Skocz do pozycji: 1.

Tytuł:

Numerical Simulations of the Effects of Droplet Size and Concentration on Vapour-Droplet JP-10/Air Detonations

Autorzy:

Liu, L.
Zhang, Q.

Powiązania:

https://bibliotekanauki.pl/articles/358150.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

multiphase detonation
discrete phase model
evaporation and breakup model
droplet size effect
initial concentration effect

Opis:

Two-dimensional simulations were conducted for JP-10 mono-dispersed vapour-droplet detonation in air, based on the detonation mechanism for clouds and validation of the extending critical droplet size limits in previous tests. In the simulations, the discrete phase model combined with the droplet evaporation and droplet breakup models was used. Utilizing a wide range of mono-dispersed droplet sizes and initial droplet concentrations, all cases of JP-10 droplets with a certain amount of pre-vaporized fuel can successfully achieve the deflagration to detonation transition. Detonation velocities at the equivalent concentration with droplet diameters no larger than 50 μm are in good agreement with the theoretical detonation velocities. The effects of droplet size and initial droplet concentration on the detonation behaviour were also investigated. Detonation velocities attained with droplet diameters below 50 μm appear to decrease very slightly with droplet size, but are almost equal to the velocity in gases. When the droplet diameter is above 50 μm, there is a decrease in simulated detonation velocity compared with fine droplets, and no secondary pressure peak was observed. For fuel-rich combustion, detonation velocities decrease rapidly with an increase in initial droplet concentration, and post-wave pressure fluctuation was obviously irregular, caused by the secondary local explosion of the droplets.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 1; 175-190
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Explosion Parameters of Gaseous JP-10/Air Mixtures

Autorzy:

Zhang, Q.
Liu, X.

Powiązania:

https://bibliotekanauki.pl/articles/358896.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

JP-10
fuels
decane
explosion pressure
explosible limits

Opis:

This paper describes flammability measurements and data on the missile fuel, JP-10. The measurements include maximum explosion pressure, maximum rate of pressure rise and limiting flammability concentrations. Through a series experiments, the influences of the concentration of gaseous JP-10 in air on the explosion pressure and on the rate of explosion pressure rise have been analyzed, and the results are discussed. The explosion pressure of gaseous JP-10/air mixtures reached their highest values within the studied range at a concentration of 1.88%. The variation trends in the explosion pressure and the rate of pressure rise of gaseous JP-10/air mixtures with volume % appear similar. When the volume % of gaseous JP-10 lies in the range 0.5-1.8%, the explosion pressure and the rate of pressure rise for gaseous JP-10/air mixtures increase with the volume %, while in the range 1.8-5% these parameters decrease with the volume %. The flammability limits of gaseous JP-10/air mixtures are near those of gaseous n-decane/air mixtures. However, the maximum explosion pressure and the maximum rate of pressure rise of gaseous JP-10/air mixtures are much higher than those of gaseous n-decane/air mixtures.

Źródło:

Central European Journal of Energetic Materials; 2016, 13, 1; 261-270
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Sensitivity analysis of Kozeny-Carman and Ergun equations

Autorzy:

Sobieski, W.
Zhang, Q.

Powiązania:

https://bibliotekanauki.pl/articles/297987.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet Warmińsko-Mazurski w Olsztynie

Tematy:

porous media
Kozeny-Carman
Ergun
porosity
tortuosity

Opis:

In the article a sensitivity analysis of linear and nonlinear terms in the Kozeny-Carman and Ergun equations was shown. In the first case the impact of the porosity, tortuosity, specific surface of the porous body and the model constant was investigated. In the second case the porosity, the particle diameter and the sphericity function were taken into account. To express the model sensitivity by numbers, an earlier developed method was used. In this way the order and the importance of the impact of individual parameters was determined. The motivations to create this article were questions, which occurred during developing a novel investigation method, linking the Discrete Element Method and the CFD techniques. The first aim was to predict what will happen, if individual parameters will be set with an error: which data should be set as accurately as possible and which data are not very important for the result value. The second intention was to state which of parameters used in porous media investigations should be expressed by functions and which by constant values. The article may be treated as set of pointers helping in using of Kozeny-Carman and Ergun laws or as an example of research methodology based on the sensitivity analysis.

Źródło:

Technical Sciences / University of Warmia and Mazury in Olsztyn; 2014, 17(3); 235-248
1505-4675
2083-4527

Pojawia się w:

Technical Sciences / University of Warmia and Mazury in Olsztyn

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Interaction between Polymer Brush and Nanoparticle: Brownian Dynamics Investigation

Autorzy:

Zhang, Q.
Xiang, X.

Powiązania:

https://bibliotekanauki.pl/articles/1400121.pdf

Data publikacji:

2013-04

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

05.45.Xt
05.45.Jn

Opis:

We use Brownian dynamics simulations to study the adsorption behavior of a nanosized particle on polymer brushes. The adsorption process, the dynamic behavior of the nanoparticle in brush, the penetration depth, and the diffusion coefficient of the nanoparticle in different depths of the brush are all investigated for different grafting densities. We provide an area density Γp, which is the area average of the monomer number above the embedded nanoparticle in brush. We find that this area density explains well qualitatively the experimental phenomenon that the nanoparticles exhibit a maximum in the adsorbed amount as a function of the grafting density of brush.

Źródło:

Acta Physica Polonica A; 2013, 123, 4; 642-646
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Prediction of Detonation Pressure and Velocity of Explosives with Micrometer Aluminum Powders

Autorzy:

Zhang, Q.
Chang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/358334.pdf

Data publikacji:

2012

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

aluminized explosives
detonation pressure
nonideal explosives
detonation velocity

Opis:

The data reported shows that the Chapman-Jouguet (CJ) detonation parameters of non-ideal explosives calculated from existing thermodynamic computer codes are significantly different from experimental results. We use CJ detonation theory to present a new approach predicting detonation pressure and velocity of aluminized explosives by thermodynamic detonation theory. There is no need to use the assumption of full and partial equilibrium of aluminum powder in reaction zones in the new approach. In this work the best agreement with experimental data was obtained by adjusting the parameter k in the Becker- Kistiakosky-Wilson equations of state (BKW-EOS). The detonation pressure and velocity values calculated by the present method agree well with the experimental results. All of the deviations for the calculated pressures of aluminized explosives are less than 9% and those for the detonation velocities are less than 7%.

Źródło:

Central European Journal of Energetic Materials; 2012, 9, 1; 77-86
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

A Predictive Method for the Heat of Explosion of Non-ideal Aluminized Explosives

Autorzy:

Zhang, Q.
Chang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/358737.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

aluminized explosives
heat of explosion
thermodynamic
nonideal explosives
high energy materials

Opis:

The heat of explosion is one of the most important thermodynamic parameters of aluminized explosives. Two improvements in numerical calculations to predict the behaviour of the explosion of non-ideal aluminized explosives were completed in this work. The chemical reaction between aluminum and the C-J detonation products of high energy ingredients was determined and the equation of state for the detonation products of high energy ingredients was revised. The constant k in the BKW equation was revised to obtain perfect results for predicting the C-J parameters for high energy ingredients. The predicted results show that the heats and temperatures of aluminized explosives become maximized when the mass fraction of aluminum powder is 30%, which is in good agreement with the results obtained by empirical formulae.

Źródło:

Central European Journal of Energetic Materials; 2013, 10, 4; 541-554
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Morphology Transformation of a Polymeric Micelle Induced by Two Encapsulated Particles

Autorzy:

Zhang, Q.
Xiang, X.

Powiązania:

https://bibliotekanauki.pl/articles/1377854.pdf

Data publikacji:

2014-12

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

82.35.Np
82.35.Jk

Opis:

We begin with a pair of spherical particles encapsulated in a micelle and solve the problem within the self-consistent field theory to investigate the morphology transformation of the micelle induced by two nano-particles. The micelles are based on amphiphilic diblock copolymer AB in homopolymer A solvents. The nano-particles are simple models of proteins or colloids. We predict different micelle structures, and relate these morphologies to particle sizes, distances between two particles, and chemical potentials of the amphiphile molecules. There are found complex structures of the micelle induced by the twin particles: many reverse micelles only with even numbers or only one micelle attached at one of the two particles. These results are of immediate interests to the interactions of micelles and particles, as well as to the transitions between vesicles and micelles.

Źródło:

Acta Physica Polonica A; 2014, 126, 6; 1338-1342
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Numerical modeling of hydrodynamic and sediment siltation due to typhoon in estuary channel regulation

Autorzy:

Zhao, H.
Zhang, Q.
Xie, M.

Powiązania:

https://bibliotekanauki.pl/articles/259087.pdf

Data publikacji:

2015

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

Oujiang Estuary
numerical model
channel regulation
sediment siltation
typhoon

Opis:

Oujiang Estuary is a complex tidal estuary with many channels and shoals in the East China Sea, which was affected by typhoon frequently. The navigation channel of Wenzhou Port is located in the north branch of Oujiang Estuary, which happened serious sediment siltation in many times due to typhoon impact. The regulation is considered to decrease siltaion of the channel and protect shoals as well. According to the site survey data, the mathematic model is established and validated, which simulates the hydrodynamic, sediment transport and channel siltation due to typhoon in Oujiang Estuary. The channel regulation scenario is studied by the model simulation after analysis of the silation character. It indicates that the high concentration sediment from shoals north of channel is main sediment source caused siltation in the channel, which can be prevented into the channel by the regulation scenario and decrease siltation efficiently.

Źródło:

Polish Maritime Research; 2015, S 1; 61-66
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Fatigue damage of V-lock chain ring under random load

Autorzy:

Zhang, Q.
Wang, H.
Guo, T.

Powiązania:

https://bibliotekanauki.pl/articles/259449.pdf

Data publikacji:

2016

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

V-lock chain ring for mining
dynamic model
fatigue damage
random load
finite element
sensitivity analysis

Opis:

To study the influence of the random load on the V-lock chain ring for mining, the numerical simulation technology is used. The dynamic tension is obtained by using the dynamic model of the plough. The life and damage nephograms are obtained by using ANSYS Workbench. The analysis results show that the short fatigue life region of the V-lock chain ring for mining is mainly concentrated on the transition region between the medial straight edge and arc, and the fatigue damage of the link chain on the side of the motion direction of the plow head is larger than that on the other side. This link chain has strong anti-fatigue performance.

Źródło:

Polish Maritime Research; 2016, S 1; 4-9
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Existence and exponential stability of a periodic solution for fuzzy cellular neural networks with time-varying delays

Autorzy:

Zhang, Q.
Yang, L.
Liao, D.

Powiązania:

https://bibliotekanauki.pl/articles/930186.pdf

Data publikacji:

2011

Wydawca:

Uniwersytet Zielonogórski. Oficyna Wydawnicza

Tematy:

sieć neuronowa
stateczność wykładnicza
rozwiązanie okresowe
fuzzy cellular neural networks
global exponential stability
periodic solution
coincidence degree

Opis:

Fuzzy cellular neural networks with time-varying delays are considered. Some sufficient conditions for the existence and exponential stability of periodic solutions are obtained by using the continuation theorem based on the coincidence degree and the differential inequality technique. The sufficient conditions are easy to use in pattern recognition and automatic control. Finally, an example is given to show the feasibility and effectiveness of our methods.

Źródło:

International Journal of Applied Mathematics and Computer Science; 2011, 21, 4; 649-658
1641-876X
2083-8492

Pojawia się w:

International Journal of Applied Mathematics and Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

An improved space vector modulation strategy for common-mode voltage reduction in matrix rectifier

Autorzy:

Liu, X.
Zhang, Q.
Hou, D.

Powiązania:

https://bibliotekanauki.pl/articles/950664.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

matrix converter
space vector modulation
common-mode voltage

Opis:

The matrix rectifier modulated by the classical space vector modulation (SVM) strategy generates common-mode voltage (CMV). The high magnitude and high du/dt of the CMV causes serious problems such as motor damage, electromagnetic noise and many others. In this paper, an improved SVM strategy is proposed by replacing the zero vectors with suitable couple of active ones that substantially eliminate the CMV. Theoretical analysis proves that the proposed strategy can reduce the amplitude of the CMV to half of the original value. In addition, the quality of the input and output waveforms is not affected by extra active vectors. Simulation and experimental results demonstrate the feasibility and effectiveness of the proposed strategy are shown.

Źródło:

Archives of Electrical Engineering; 2014, 63, 1; 93-106
1427-4221
2300-2506

Pojawia się w:

Archives of Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Removal of clofibric acid and diclofenac during anaerobic digestion of sewage sludge

Autorzy:

Zhou, H.
Zhang, Q.
Zhang, Q
Ma, L.
Tu, B.
Li, H.
Zhou, Y.

Powiązania:

https://bibliotekanauki.pl/articles/207894.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

fermentacja beztlenowa
osady ściekowe
farmaceutyki
kwas klofibrowy
diklofenak
anaerobic digestion
sewage sludge
pharmaceuticals
clofibric acid
diclofenac

Opis:

Removal of two acidic pharmaceuticals, clofibric acid and diclofenac, present in sewage sludge using two kinds of anaerobic digestions was investigated. The effective isolation and purification pretreatment to extract the target compounds from the sewage sludge samples was firstly established, followed by gas chromatography-mass spectrometry (GC-MS) analysis to identify and quantify them. Under mesophilic conditions, the removal efficiencies for clofibric acid and diclofenac with the initial concentrations of 5 μg /dm3 were up to 95% and 97%. After thermophilic anaerobic digestion, the removal efficiency could be increased to 99.3% for clofibric acid, however, it did not increase for diclofenac. In general, anaerobic digestion could effectively remove the target compounds from the sewage sludge (all above 90%).

Źródło:

Environment Protection Engineering; 2013, 39, 4; 63-77
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Effect of provenance and water stress on biomass and polyphyllin content in the medicinal plant Paris polyphylla Smith var. yunnanensis

Autorzy:

Wu, X.
Zuo, .
Zhang, Q.
Wang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/12304075.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Tematy:

plant cultivation
Paris polyphylla
medicinal plant
herbal plant
water stress
biomass
polyphyllin content

Opis:

Water stress and provenance could affect the secondary metabolites synthesis and accumulation in herbs. Thus, this study explored the effect of soil water moisture and provenance on the growth of Paris polyphylla Smith var. yunnanensis (PPY). Three provenances (Jinping, Luquan and Weixi in Yunnan, China) of PPY samples were grown in different soil water moisture conditions [0.80, 0.70 and 0.50 field capacity (FC)] during Dec. 2015 to Sep. 2017. Results showed that the highest biomass weight was presented in 0.70 FC for Luquan and Weixi samples. Biomass weight for Jinping provenance presented a decreasing tendency with the decreased soil water moisture and the highest biomass were shown in 0.80 FC. However, quantitative analysis revealed that the total content of polyphyllin increased with decreasing the soil water moisture for Jinping and Weixi samples. The highest total content of polyphyllin in rhizome was inclined to show in Jinping samples, while the stem and leaf tissues were shown in Weixi samples. Additionally, results of ANOVA combined with PCA indicated that the difference among these three provenances were significant. Correlation analysis results revealed that 0.50 FC induced the competitive relationship occurrence for polyphyllin distribution. Thus, 0.70 FC was the most suitable soil-water condition for PPY growth. Besides, provenance collected from Jinping could consider as a good quality germplasm. Consequently, this study might provide a preliminary foundation for irrigation project formulated and provenance screened for PPY cultivation.

Źródło:

Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 2; 171-191
1644-0692

Pojawia się w:

Acta Scientiarum Polonorum. Hortorum Cultus

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Band gap properties of periodic tapered beam structure using traveling wave method

Autorzy:

Li, T.
Ma, X.
Zhang, Q.
Wang, Z.

Powiązania:

https://bibliotekanauki.pl/articles/279452.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

band gap
periodic structure
traveling wave method
Bloch theorem
tapered beam

Opis:

The wave motion equations of a tapered beam with respect to axial, torsional and flexural deformations are deduced including the transmission and waveguide equations. Combining the force equilibrium and displacement coordination conditions at the junction, we obtain the relation between the wavenumber and frequency, and the band gap properties of periodic tapered beam structures by the Bloch theorem. The modeling accuracy and efficiency of the traveling wave method are verified by the finite element method. The band gap properties of periodic tampered and uniform beam structures are analyzed and compared for the same materials and lengths as well as the same volumes.

Źródło:

Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1297-1308
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Experimental Evidence for Jahn-Teller Transition in a Fe(II)Fe(III) Bimetallic Oxalate

Autorzy:

Tang, G.
He, Y.
Xu, F.
Zhang, Q.

Powiązania:

https://bibliotekanauki.pl/articles/1400401.pdf

Data publikacji:

2013-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

75.50.Xx
76.80.+y

Opis:

Bimetallic oxalate ${[N-(n-C_4H_9)_4][FeFe(C_2O_4)_3]}_{n}$ has been investigated by the Mössbauer spectroscopy. The Mössbauer studies confirm that high-spin Fe(III) (S=5/2) and Fe(II) (S=2) ions are present in the compound. These spectra above 60 K consist of three quadrupole doublets, indicating that there are three different Fe sites in the material. The Mössbauer results reveal that spontaneous magnetization of Fe(II) sublattices increases more steeply than that of Fe(III) sublattices as the temperature decreases from $T_{C}$. Great increase of quadrupole splitting at 50 K provides compelling evidence for the predicted Jahn-Teller transition.

Źródło:

Acta Physica Polonica A; 2013, 123, 1; 118-120
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Study of all-optical logic XOR gate based on linear optical amplifier cross-gain modulation

Autorzy:

Li, X
Jin, J
Li, H
Zhang, Q

Powiązania:

https://bibliotekanauki.pl/articles/174514.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

linear optical amplifier
cross-gain modulation
XOR gate

Opis:

All-optical logic is the key to future high speed and large capacity optical transmission, the realization of optical packet switching and optical computing, and it has a very profound influence on the development of future optical communication. A linear optical amplifier as a new type of semiconductor optical amplifier, which has a good gain characteristic, has better signal performance than a traditional semiconductor optical amplifier in the wavelength conversion. This article presents a numerical simulation model of all-optical logic XOR gate and its logic operation based on cross-gain modulation of linear optical amplifier, and has also completed some of the basic logic operations, including AND, OR, NOT operations.

Źródło:

Optica Applicata; 2015, 45, 4; 447-457
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Population diversity maintenance in brain storm optimization algorithm

Autorzy:

Cheng, S.
Shi, Y.
Qin, Q.
Zhang, Q
Bai, R.

Powiązania:

https://bibliotekanauki.pl/articles/91571.pdf

Data publikacji:

2014

Wydawca:

Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych

Tematy:

brainstorm
optimization algorithm
convergence
divergence
brainstorm optimization
BSO
swarm intelligence
BSO algorithm

Opis:

The convergence and divergence are two common phenomena in swarm intelligence. To obtain good search results, the algorithm should have a balance on convergence and divergence. The premature convergence happens partially due to the solutions getting clustered together, and not diverging again. The brain storm optimization (BSO), which is a young and promising algorithm in swarm intelligence, is based on the collective behavior of human being, that is, the brainstorming process. The convergence strategy is utilized in BSO algorithm to exploit search areas may contain good solutions. The new solutions are generated by divergence strategy to explore new search areas. Premature convergence also happens in the BSO algorithm. The solutions get clustered after a few iterations, which indicate that the population diversity decreases quickly during the search. A definition of population diversity in BSO algorithm is introduced in this paper to measure the change of solutions’ distribution. The algorithm’s exploration and exploitation ability can be measured based on the change of population diversity. Different kinds of partial reinitialization strategies are utilized to improve the population diversity in BSO algorithm. The experimental results show that the performance of the BSO is improved by part of solutions re-initialization strategies.

Źródło:

Journal of Artificial Intelligence and Soft Computing Research; 2014, 4, 2; 83-97
2083-2567
2449-6499

Pojawia się w:

Journal of Artificial Intelligence and Soft Computing Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Growth, proline content and proline-associated gene expression of autotetraploid Betula platyphylla responding to NaHCO3 stress

Autorzy:

Mu, H.
Lin, L.
Zhang, Q.
Tang, X.
Zhang, X.
Cheng, G.

Powiązania:

https://bibliotekanauki.pl/articles/41683.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

plant growth
proline content
stress response
gene expression
autotetraploid
Betula platyphylla
birch
Sodium bicarbonate
plant stress

Opis:

Plant breeders have focused much attention on polyploid trees because of their resistance for forestry. To evaluate the impact of intraspecies genome duplication on NaHCO3 stress, a series of Betula platyphylla autotetraploids and diploids were generated from the same family. The growth, proline content and proline-associated gene expression of these autotetraploid individuals were compared with those diploid trees. Autotetraploids were superior in injury index and relative growth of height and base diameter compared to diploids. The proline content was higher in autotetraploid individuals compared to diploids. Gene expression data revealed autotetraploids were generally higher expression in BpP5CS1, BpP5CS2, Bp- P5CR1, BpP5CR2, BpP5CR3 and BpOAT and were lower expression in BpProDH and BpP5CDH compared to diploid trees. These results shed light on resistance variation in birch autotetraploidization and polyploidy breeding as a new approach for genetic improvement of birch trees.

Źródło:

Dendrobiology; 2016, 75
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Preparation and cytological study of collagen/nano-hydroxyapatite/graphene oxide composites

Autorzy:

Wang, J.
Wang, Y.
Liu, D.
Yang, Q.
Huang, C.
Yang, C.
Zhang, Q.

Powiązania:

https://bibliotekanauki.pl/articles/307450.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

nanohydroksyapatyt
tlenek grafitu
mineralizacja
kolagen
nano-hydroxyapatite
graphene oxide
biomimetic mineralization
collagen

Opis:

Biomimetic mineralized composite scaffolds are widely used as natural bone substitute materials in tissue engineering by inducing and assembling bonelike apatite. In this study, the single lamellar structure of graphene oxide (GO) powder was prepared via an improved Hummers’ method. Methods: To better mimic natural bone, the collagen (COL)/Nano-hydroxyapatite (nHA)/graphene oxide (GO) composite material was prepared by simulated body fluid (SBF) method using COL/GO as a matrix template. Hydroxyapatite (HA) with calcium ion deficiency was achieved via biomimetic mineralization, and it had properties closer to those of natural bone than pure HA has. Results: The mineralized COL/nHA/GO composites exhibited loose porous structures, and the connectivity of the holes was good and thus beneficial to the exchange of nutrients and excreted metabolites. Conculsions: Antibacterial and MTT experiment confirmed that the COL/nHA/GO composite material had excellent antibacterial property and biocompatibility. Hence, these results strongly suggested the mineralized COL/nHA/GO composite is a good candidate biomaterial to be applied in bone tissue engineering.

Źródło:

Acta of Bioengineering and Biomechanics; 2018, 20, 4; 65-74
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

UV-Vis spectroscopic detection coupled with chemometrics for the measurement of mixed organic acids in water samples enriched by radial electric focusing solid phase extraction

Autorzy:

Guo, Y.
Liu, X.
Liu, J.
Bian, X.
Zhang, Q.
Pan, J.
Wan, D.

Powiązania:

https://bibliotekanauki.pl/articles/221808.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

chemometrics
UV-Vis spectrophotometer
radial electric focusing solid phase extraction
mixed organic acids

Opis:

Due to the difficulty of detecting traces of organic acid mixture in an aqueous sample and the complexity of resolving UV-Vis spectra effectively, a combinatory method based on a self-made radical electric focusing solid phase extraction (REFSPE) device, UV-Vis detection and partial least squares (PLS) calculation is proposed here. In this study, REFSPE was used to enhance the extraction process of analytes between the aqueous phase and the membrane phase to enrich the trace of mixed organic acid efficiently. Then, the analytes, which were eluted from the adsorption film by ethanol with the assistance of an ultrasonic cleaning machine, were detected with UV-Vis spectrophotometry. After that, the PLS method was introduced to solve the problem of overlapping peaks in UV-Vis spectra of mixed substances and to quantify each compound. The linearly dependent coefficients between the predicted value of the model and the actual concentration of the sample were all higher than 0.99. The limit values of detection for benzoic acid, phthalic acid and p-toluene sulfonic acid were found at 9.9 μg/L, 12.2 μg/L and 13.8 μg/L with the relative recovery values between 84.8% and 117.9%. The RSD (n = 20) values of each component are 1.17%, 1.11% and 0.86%, respectively. Therefore, the proposed combined method can determine traces of complex materials in an aqueous sample efficiently and has wonderful potential applications.

Źródło:

Metrology and Measurement Systems; 2018, 25, 2; 317-329
0860-8229

Pojawia się w:

Metrology and Measurement Systems

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Genome-wide association study of terpenoids in resin reveals candidate genes for resin yield in Pinus massoniana

Autorzy:

Bai, Q.
Zhang, Q.
Cai, Y.
Lian, H.
Liu, W.
Luo, M.
Zeng, L.
He, B.

Powiązania:

https://bibliotekanauki.pl/articles/2078149.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

Pinus massoniana
GC-MS
terpenoid
GWAS
candidate gene

Opis:

Masson pine (Pinus massoniana) is an important species for resin tapping in China. Molecular assisted selection (MAS) has been gradually introduced in to the selection and breeding of masson pine. Until now, the lack of connection between genome information and phenotypic data has hindered the breeding and selection of important chemical compounds of xylem resin. In this study, gas chromatography mass spectrometer (GC-MS) was employed for qualitative and quantitative analysis of chemical compounds of resin collected from 69 masson pine germplasm resources. Then, genome-wide association study (GWAS) was conducted for the terpenoids with higher heritability. A total of 15 primary compounds, including six diterpenes and nine monoterpenes/sesquiterpenes, were detected from xylem resin. By using five GWAS methods, 42 associated SNPs were identified from these masson pines. The P. taeda genome database was used for detecting candidate genes related to the associated SNPs. By using transcriptome data, several members of PKc_like super family, Cytochrome P450, AP2-ERF, F-box, and ABC transporter were found to be highly expressed in the masson pines with higher resin-yielding capacity. The terpenoids associated SNPs can be directly used for MAS. These candidate genes, especially the two F-box members, will contribute to the study of terpenoid biosynthesis mechanisms in the future.

Źródło:

Dendrobiology; 2020, 84; 109-121
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Influence of cutting angle on mechanical properties of rock cutting by conical pick based on finite element analysis

Autorzy:

Qiao, S.
Zhang, Z. Q.
Zhu, Z. M.
Zhang, K.

Powiązania:

https://bibliotekanauki.pl/articles/2016448.pdf

Data publikacji:

2021

Wydawca:

Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa

Tematy:

conical pick
energy consumption ratio
cutting angle
computer simulation

Opis:

In view of the current situation that it is difficult to obtain the actual cutting force received by the conical pick of Continuous-Miner and to deal with the characteristics of the cutting force. By using contact dynamics, rock mechanics, and finite element methods, based on the display dynamics analysis program ANSYS/LS-DYNA and the Holmquist–Johnson–Cook model, the contact mechanical characteristics between conical pick and rock are analyzed. The resultant force was obtained by obtaining the force curve of the conical pick under X, Y and Z directions, analysis of cutting gear cutting speed of 2.5 m/s, cutting depth of 5, 10, 15, 20 and 25 mm, cutting angle of 30°, 35°, 40°, 45°, 50° parameters of the size of cutting force and cutting ratio energy consumption, thus, the best cutting angle of the conical pick is obtained. The conclusions are as follows: when the cutting depth and cutting speed are constant, and the cutting angle is 45°, the mean cutting force received by the conical pick is the least, the specific energy consumption is the least, and the cutting efficiency is the highest. The best cutting angle of the conical pick should be 45°; When the cutting angle and cutting speed are constant, the energy needed by the cutter to cut the rock increases with the increase of cutting depth. The research results provide a theoretical basis for improving cutting efficiency and cutting life, and for choosing cutting angle and cutting thickness.

Źródło:

Mining Science; 2021, 28; 161-173
2300-9586
2353-5423

Pojawia się w:

Mining Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

A new basal actinopterygian fish from the Anisian (Middle Triassic) of Luoping, Yunnan Province, Southwest China

Autorzy:

Wen, W.
Zhang, Q.-Y.
Hu, S.-X.
Zhou, C.-Y.
Xie, T.
Huang, J.-Y.
Chen, Z.Q.
Benton, M.J.

Powiązania:

https://bibliotekanauki.pl/articles/21811.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

actinopterygian fish
fish
Anisian
Middle Triassic
Luoping
Yunnan Province
China
Actinopterygii
Halecomorphi
Triassic

Opis:

The new neopterygian fish taxon Luoxiongichthys hyperdorsalis gen. et sp. nov. is established on the basis of five specimens from the second member of the Guanling Formation (Anisian, Middle Triassic) from Daaozi Quarry, Luoping, Yunnan Province, Southwest China. The new taxon is characterized by the following characters: triangular body outline with a distinct apex located between skull and dorsal fin; free maxilla; slender preopercular almost vertical; three suborbitals; at least eight strong branchiostegals with tubercles and comb−like ornamentation on the anterior margin; clavicles present; two postcleithra; ganoid scales covered by tubercles and pectinate ornamentation on the posterior margin with peg−and−socket structure; hemiheterocercal tail slightly forked. Comparison with basal actinopterygians reveals that the new taxon has parasemionotid−like triangular symplectics, but a semionotid opercular system. Cladistic analysis suggests that this new genus is a holostean, and either a basal halecomorph or basal semionotiform.

Źródło:

Acta Palaeontologica Polonica; 2012, 57, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Coelacanths from the Middle Triassic Luoping Biota, Yunnan, South China, with the earliest evidence of ovoviviparity

Autorzy:

Wen, W.
Zhang, Q.-Y.
Hu, S.-X.
Benton, M.J.
Zhou, C.-Y.
Tao, X.
Huang, J.-Y.
Chen, Z.-Q.

Powiązania:

https://bibliotekanauki.pl/articles/23008.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

coelacanth
Middle Triassic
Triassic
Yunnan province
South China
China
evidence
ovoviviparity
Anisian
Actinistia
Coelacanthoidei
Latimerioidei

Opis:

The fossil record of coelacanths is patchy, with very few taxa known from the Triassic of Asia. We report here two new genera and species of coelacanths from the Luoping Biota, a recently found site of exceptional fossil preservation from Yunnan, South China. The first new taxon, Luopingcoelacanthus eurylacrimalis, is based on four specimens, which to− gether show most aspects of the anatomy. One specimen shows two small coelacanths inside the ventral portion of the ab− dominal cavity, and these are interpreted as intrauterine embryos, close to birth size, based on comparisons with previ− ously reported embryos of the fossil coelacanths Rhabdoderma and Undina, and the extant genus Latimeria. Our new find extends the evidence for ovoviviparity in coelacanths back from the Late Jurassic to the Middle Triassic. The second new taxon, Yunnancoelacanthus acrotuberculatus, is based on one specimen, and differs from Luopingcoelacanthus in the dentary, lachrymojugal, number of rays of the first dorsal fin, and especially in the ornament on dermal bones and scales. Acladistic analysis shows that the new taxa are closest relatives to the derived clade Latimerioidei. The relatively high di− versity of coelacanths in the Early Triassic, and adaptations of living Latimeria to low−oxygen conditions, suggests that the group may have included ‘disaster taxa’ that benefited from anoxic and dysoxic ocean conditions in the aftermath of the end−Permian mass extinction.

Źródło:

Acta Palaeontologica Polonica; 2013, 58, 1
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Analysis of strain localization in porous media with transversely isotropic elasticity under undrained conditions

Autorzy:

Zhang, Y. Q.
Wang, L. Z.
Pang, M.
Fan, L. F.

Powiązania:

https://bibliotekanauki.pl/articles/949143.pdf

Data publikacji:

2017

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

porous medium
strain localization
transverse isotropic elasticity
undrained condition
pore fluid compressibility

Opis:

The properties of strain localization for elastic-plastic porous media with transversely isotropic elasticity under undrained conditions are investigated. Under non-associated plasticity and tri-axial stress states, the conditions for strain localization of elastic-plastic porous media are derived, in which the effects of deviation from isotropic elasticity and pore fluid compressibility are included. Based on the Mohr-Coulomb yield criterion, the influences of the deviation from isotropic elasticity and pore fluid compressibility on the direction angle of localized band initiation and the corresponding critical hardening modulus for the case of plane strain are discussed. As a result, the properties of strain localization are dependent upon the deviation from isotropic elasticity and pore fluid compressibility. The deviation from isotropic elasticity and pore fluid compressibility has significant impacts on the direction angle of localized band initiation and the corresponding critical hardening modulus.

Źródło:

Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 199-211
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Selection of reference genes for quantitative real-time RT-PCR on gene expression in Golden Pompano (Trachinotus ovatus)

Autorzy:

Chen, X.J.
Sun, Y.
Zhang, X.Q.
Huang, S.
Cao, Z.J.
Qin, Q.W.
Hu, W.T.
Zhou, Y.C.

Powiązania:

https://bibliotekanauki.pl/articles/2087908.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Źródło:

Polish Journal of Veterinary Sciences; 2017, 3; 583-594
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

A New Potential Superhard Phase of $OsN_2$

Autorzy:

Fan, Q.
Wei, Q.
Yan, H.
Zhang, M.
Zhang, D.
Zhang, J.

Powiązania:

https://bibliotekanauki.pl/articles/1205218.pdf

Data publikacji:

2014-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

62.20.de
65.40.-b
62.20.dq

Opis:

A new phase of C2/m $OsN_2$ is proposed in this paper. The crystal structure, elasticity and electronic properties of C2/m $OsN_2$ were studied by first-principles calculations. The elastic constants, the elastic moduli (B, G, and E) and Poisson's ratio v of $OsN_2$ have been investigated. From the first-principles calculations, we find that C2/m $OsN_2$ is metallic and mechanically stable. The quasi-harmonic Debye model, using a set of total energy versus molar volume obtained from the first-principles calculations, is applied to the study of the thermal and vibrational effects. The dependence of structural parameters, thermal expansions, heat capacities, Grüneisen parameters and Debye temperatures on the temperature and pressure are obtained in the whole pressure range from 0 to 80 GPa and temperature range from 0 to 800 K as well as compared with available data.

Źródło:

Acta Physica Polonica A; 2014, 126, 3; 740-746
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Lignite cleaning in NaCl solutions by the reverse flotation technique

Autorzy:

Zhang, H.
Liu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/110516.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

lignite
reverse flotation
NaCl
kinetics
coal preparation

Opis:

A cleaning possibility of low (BD) and high ash content (IM) lignites in NaCl solutions using a reverse flotation technique was studied. Preliminary test results indicated that BD lignite cannot be cleaned effectively in the traditional manner because gangue was floated first rather than a combustible material. Further studies indicated that the lignite cleaning in NaCl solutions using the reverse flotation technique is possible. However, a large quantity of dodecyl amine hydrochloride (DAH) was required. A lower ash content in a concentrate can be obtained by addition of NaCl. A concentrate yield can be im-proved by addition of starch. Under the test conditions, for BD lignite with the ash content in the feed 15.19%, the ash content in the concentrate 11.44% and the concentrate yield 67.38% were obtained. Similarly, for IM lignite with the ash content in the feed 57.40%, the ash content in the concentrate 32.90% and the concentrate yield 25.08% were obtained. The flotation rate constant k and maximum ash recovery ε∞ significantly increased with the NaCl concentration.

Źródło:

Physicochemical Problems of Mineral Processing; 2015, 51, 2; 695-706
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Experimental and optimization design of offshore drilling seal

Autorzy:

Zhang, Y.
Zhang, X.
Chang, X.
Wu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/260627.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

offshore drilling
design optimization
seals
finite element analysis
MATLAB

Opis:

Three-cone bit is the key equipment in the exploration of the oil in offshore drilling and exploration, the bearing system and the seal system are the critical components for the bit. Especially in the offshore drilling environment, the seal design need to be carefully considered. A multi-objective optimization design including orthogonal design method and F-test with finite element analysis for a three-cone bit seal is proposed. Firstly, the calculation method of optimization targets are given, including the minimization of maximum contact pressure and leakage rate analyzed by ANSYS and MATLAB respectively, to maximize seal life and reliability. Then, an orthogonal experiment approach is used to investigate the effects of the eleven parameters on the seal performance, and the influence degrees of the seal factors on the optimization targets have been confirmed by F-test, and the reasonable factors can be determined by the trend of the targets. Finally, in order to validate the analysis results, a new seal was designed and tested on a seal tester compared to the previous seal. In this test, the seal maximum interface temperature that reflects the position of maximum contact pressure can be obtained by using three high precision thermocouples. Both the experiment results and the numerical analyses proved that the maximum contact pressure and leakage rate of the improved seal have been reduced compared to the previous.

Źródło:

Polish Maritime Research; 2017, S 3; 72-78
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Adsorption of congo red from aqueous solutions by porous soybean curd xerogels

Autorzy:

Zhang, Z.
Li, Y.
Du, Q.
Li, Q.

Powiązania:

https://bibliotekanauki.pl/articles/778311.pdf

Data publikacji:

2018

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Soybean curd
Congo red
Adsorption
Kinetics
Thermodynamics

Opis:

Soybean curd is a very popular food containing high-quality protein, polyunsaturated fats, vitamins, minerals and other nutrients. This study aims to prepare porous soybean curd xerogels via a vacuum freeze drying method and uses them as adsorbents to remove congo red from aqueous solutions. The morphology and functional groups of the soybean curd xerogels were characterized using scanning electron microscopy and Fourier transform infrared spectroscopy, respectively. The adsorption properties of congo red onto the soybean curd xerogels were carried out through investigating the influencing experimental parameters such as the drying method, solution pH, adsorbent dose, contact time and temperature. The results showed that the adsorption isotherm data were fitted well to the Freundlich isotherm. Adsorption kinetics of congo red onto the soybean curd followed the pseudo-second-order kinetic model. The thermodynamic parameters, such as ΔG°, ΔH° and ΔS°, were also determined.

Źródło:

Polish Journal of Chemical Technology; 2018, 20, 3; 95-102
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Effects of pretreated ozone and modified atmosphere packaging on the quality of fresh-cut green asparagus

Autorzy:

An, J.
Zhang, M.
Lu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/25240.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

fresh-cut green asparagus
Asparagus officinalis
ozone
modified atmosphere packaging
pretreatment
lignifying
packaging
quality
cell wall composition
asparagus

Źródło:

International Agrophysics; 2006, 20, 2
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Ship collision avoidance decision model and simulation based on collision circle

Autorzy:

Zhang, J.
Hu, Q.
Liao, B.

Powiązania:

https://bibliotekanauki.pl/articles/116588.pdf

Data publikacji:

2019

Wydawca:

Uniwersytet Morski w Gdyni. Wydział Nawigacyjny

Tematy:

collision avoidance
anti-collision
collision circle
decision model
ship collision avoidance decision model
Possible Point of Collision (PPC)
Java Topology Suite (JTS)
colregs

Opis:

In order to give consideration to both comprehensive evaluation and efficient decision-making in collision avoidance decision-making process, a collision avoidance decision-making model based on collision circle is proposed by introducing the concept of collision circle. Firstly, the factors causing ship collision are analyzed. Secondly, the static and dynamic characteristics of collision circles are analyzed and summarized by using collision circle simulation cases. Thirdly, based on the static characteristics, a reasonably distributed collision avoidance decision model of (Possible Point of Collision,PPC) was established. Finally, the spatial data operations core algorithm (Java Topology Suite, JTS) is used for logical operation and visualization, so as to realize the ship collision avoidance evaluation and decision. The decision model was used to verify the accident scenario of "SANCHI", and the results showed that the obtained collision avoidance scheme was reasonable and in line with the "International Regulations for Preventing Collisions at Sea" and safety requirements, thus providing a reference for maritime operators to avoid collisions between ships.

Źródło:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 325-334
2083-6473
2083-6481

Pojawia się w:

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Fatigue Behavior and Mechanism of FV520B-I Owing to the Effect of Loading Frequency on the Fatigue Property in HCF and VHCF Regime

Autorzy:

Wang, J.
Zhang, Y.
Shi, B.
Zhao, Q.
Sun, Q.
Zhang, Z.
Lu, H.

Powiązania:

https://bibliotekanauki.pl/articles/353784.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

ultrahigh loading frequency
FV520B-I
fatigue strength
fatigue conversion model

Opis:

Fatigue property of FV520B-I is affected by the ultrahigh loading frequency significantly, and the ultrasonic fatigue experimental data can’t be employed directly to analyze the fatigue failure in the actual remanufacturing engineering. However few theories about the effect of loading frequency on the fatigue property of FV520B-I has ever been proposed. In this paper, both ultrasonic experiment and conventional experiment are conducted out to obtain the fatigue data. The effect of loading frequency on the fatigue data distribution is discussed firstly, its fatigue limit declines with the increase of the loading frequency. Then the fracture surface observations are captured, the fatigue property and fatigue behavior mechanism of FV520B-I is examined by analyzing the fracture surface features, crack initiation and failure observations. A new material frequency correction factor is proposed and introduced to eliminate the influence of the loading frequency on the FV520B-I fatigue property. FV520B-I empirical fatigue life conversion model and fatigue strength conversion model are established with comprehensive use of a fitting algorithm based on the combination of experimental data and classic formula. A clear understand of the effect of loading frequency on the fatigue property of FV520B-I is novel and has an important significance in guaranteeing the accuracy of the actual fatigue analysis of FV520B-I in the remanufacturing engineering.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 1; 347-357
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Reliability analysis for multi-state system based on triangular fuzzy variety subset bayesian networks
Analiza niezawodności systemu wielostanowego z zastosowaniem sieci bayesowskich opartych na rozmytych podzbiorach zmienności opisanych przez trójkątną funkcję przynależności

Autorzy:

He, Q.
Zha, Y.
Zhang, R.
Sun, Q.
Liu, T.

Powiązania:

https://bibliotekanauki.pl/articles/302183.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

teoria zbiorów rozmytych
system wielostanowy
sieć bayesowska
wypadek podczas ruchu wózka windy
analiza niezawodności
reliability analysis
fuzzy set theory
Multi-State System
Bayesian network
elevator free movement accident

Opis:

W niniejszej pracy zaproponowano nową metodę analizy niezawodności systemów wielostanowych wykorzystującą sieci Bayesa (BN) oparte na rozmytych podzbiorach zmienności opisanych za pomocą trójkątnej funkcji przynależności. Metoda ta uwzględnia rozmyty charakter danych dotyczących uszkodzeń, wielostanowość systemu oraz zmienność prawdopodobieństwa wystąpienia uszkodzenia w czasie. BN, które znalazły zastosowanie w modelowaniu i metodach obliczeniowych, wykorzystuje się także do analizy niezawodności. W przedstawionych badaniach, analizę BN uzupełniono o elementy teorii zbiorów rozmytych wykorzystując do opisu prawdopodobieństwa wystąpienia uszkodzenia, podzbiory zmienności opisane przez trójkątną funkcję przynależności. Niepewność zależności logicznej pomiędzy awariami reprezentowanymi przez różne węzły sieci opisano za pomocą tabel rozmytego prawdopodobieństwa warunkowego. W pierwszej kolejności analizowano prawdopodobieństwo uszkodzenia każdego korzenia (węzła głównego) w funkcji czasu. Następnie, wyznaczono trójkątny rozmyty podzbiór zmienności, za pomocą którego opisano rozmyte prawdopodobieństwo uszkodzenia węzłów głównych. Podzbiór ten wykorzystano do analizy niezawodności systemu wielostanowego przy pomocy rozmytych BN. Artykuł kończy opis wypadku podczas ruchu wózka windy szybkobieżnej, który potwierdza skuteczność i możliwość praktycznego wykorzystania proponowanej metody. Wyniki pokazują, że proponowane podejście może skutecznie rozwiązywać na wczesnym etapie problemy związane z niepewnością informacji oraz wielostanowością systemu.
In this paper, a novel reliability analysis method for multi-state system is proposed on the basis of triangular fuzzy variety subset Bayesian network (BN). The method considers fuzziness, multi-state, and variety of failure probability over time. With advantages in modeling and computation, the BN is utilized for reliability analysis. Fuzzy set theory is introduced into the BN analysis by using triangular fuzzy variety subset to describe failure probability. The uncertainty of fault logical relationship between different nodes is described through fuzzy conditional probability tables. As a function of time, the failure probability of each root node is analyzed first. Subsequently, the triangle fuzzy variety subset is established to describe the fuzzy failure probability of root nodes. This subset is applied to analyze the reliability of multi-state system fuzzy BN. Finally, a case study on the car free movement accident of flexible high-speed elevator lift system is used to demonstrate the effectiveness and practicality of the proposed method. Results show that the proposed approach could effectively address the problems on information uncertainty and multi-state in the early stage.

Źródło:

Eksploatacja i Niezawodność; 2017, 19, 2; 158-165
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Prediction of moisture content uniformity using hyperspectral imaging technology during the drying of maize kernel

Autorzy:

Huang, M.
Zhao, W.
Wang, Q.
Zhang, M.
Zhu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/24685.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

prediction
moisture content
uniformity
hyperspectral imaging
drying
maize kernel

Opis:

Moisture content uniformity is one of critical parameters to evaluate the quality of dried products and the drying technique. The potential of the hyperspectral imaging technique for evaluating the moisture content uniformity of maize kernels during the drying process was investigated. Predicting models were established using the partial least squares regression method. Two methods, using the prediction value of moisture content to calculate the uniformity (indirect) and predicting the moisture content uniformity directly, were investigated. Better prediction results were achieved using the direct method (with correlation coefficients RP = 0.848 and root-mean-square error of prediction RMSEP = 2.73) than the indirect method (RP = 0.521 and RMSEP = 10.96). The hyperspectral imaging technique showed significant potential in evaluating moisture content uniformity of maize kernels during the drying process.

Źródło:

International Agrophysics; 2015, 29, 1
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Effect of ammonium sulfate on the sulfidation flotation of malachite
Wpływ obecności siarczanu amonu na przebieg procesu sulfitacji (siarczkowania) w trakcie flotacji malachitu

Autorzy:

Liu, C.
Feng, Q.
Zhang, G.

Powiązania:

https://bibliotekanauki.pl/articles/220224.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

malachit
siarczek amonu
flotacja poprzez sulfidację (siarczkowanie)
budowa powierzchniowa
malachite
ammonium sulfate
sulfidization-flotation
surface morphology

Opis:

The effect of ammonium sulfate on the sulfidation flotation of malachite was investigated by micro-flotation tests, scanning electron microscope (SEM) and energy dispersive spectrometer (EDS) measurements. Micro-flotation results show that the sodium sulfide concentration and strring time are difficult to control on the sulfidation flotation of malachite. However, when ammonium sulfate was used, the detrimental effect of mixing time and high dosage of sodium sulfide on the sulfidization flotation of malachite can be efficiently eliminated. SEM results showed that sulfidized film on malachite in the presence of ammonium sulfate, and EDS analysis results showed that more S element absorbed and distributed equality on the malachite surface, which was agreed well with the macro-flotation results.
Badano wpływ siarczanu amonu na przebieg procesu siarczkowania w trakcie flotacji malachitu przy wykorzystaniu badania mikroskopowego, mikroskopii elektronowej skanningowej (SEM) oraz pomiarów spektrometrycznych rozpraszania energii EDS. Testy mikroskopowe wykazały, że stężenie siarczku sodu i długość czasu mieszania są parametrami, które niezwykle trudno kontrolować w trakcie procesu siarczkowania towarzyszącemu flotacji malachitu. Z kolei przy zastosowaniu siarczanu amonu, udaje się skutecznie wyeliminować niekorzystne efekty związane z czasem mieszania oraz wysokimi stężeniami siarczku sodu w trakcie flotacji malachitu poprzez siarczkowanie. Wyniki mikroskopii skaningowej wskazują, że przy zastosowaniu siarczanu amonu powstaje cienki film siarczkowy na malachicie zaś pomiary spektrometryczne wykazały większe ilości zaabsorbowanej i bardziej równomiernie rozłożonej siarki pierwiastkowej S na powierzchni malachitu, co pozostaje w pełnej zgodności z wynikami uzyskanymi z badania procesu flotacji w skali makro.

Źródło:

Archives of Mining Sciences; 2018, 63, 1; 139-148
0860-7001

Pojawia się w:

Archives of Mining Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

General concerns life-cycle design of economical ice-resistant structures in the Bohai Sea

Autorzy:

Zhang, D.
Yu, S.
Yue, Q.

Powiązania:

https://bibliotekanauki.pl/articles/258458.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

ice zone
economical ice-resistant structure
life-cycle design
performance-based design
cost-effective code

Opis:

In China, the oil and natural gas resources of Bohai Bay are mainly marginal oil fields. It is necessary to build both iceresistant and economical offshore platforms. However, there are many risks during the life cycle of offshore platforms due to the imperfect preliminary design for the Bohai Sea economical ice-resistant structures. As a result, the whole life-cycle design should be considered, including plan, design, construction, management and maintenance design. Based on the demand of existing codes and research of the basic design, structural ice-resistant performance and the reasonable management and maintenance, the life-cycle design theory is discussed. It was concluded that the life-cycle cost-effective optimum design proposed will lead to a minimum risk.

Źródło:

Polish Maritime Research; 2017, S 2; 164-191
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Research and application of rule updating mining algorithm for marine water quality monitoring data

Autorzy:

Sun, Q
Zhang, J.
Xu, X

Powiązania:

https://bibliotekanauki.pl/articles/258822.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

marine water quality monitoring
database updating
data mining
rule updating

Opis:

This paper studies the characteristics of marine water quality monitoring data monitored by photoelectric sensor network, mines the potential information from the massive data. on account of the continuous accumulation of monitoring data, this paper focuses on the study of database with numerical attribute and proposes a rule updating algorithm for solving the rule maintenance issues caused by changes in the database. according to the rule, the algorithm forms a new database from part of the original data and the new data, and searches the new database by random search, thus can avoid creating a large number of redundant rules and can quickly mine effective rules at the same time. experimental results show that this method not only can avoid mining in the whole original massive data, but also can improve work efficiency, and can quickly and effectively find new data and find useful rules in the data with high practicability.

Źródło:

Polish Maritime Research; 2018, S 3; 136-140
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Investigation and statistical analysis on the deterrence effect of police patrol

Autorzy:

Suo, Q.
Suo, R.
Zhang, D.

Powiązania:

https://bibliotekanauki.pl/articles/2140956.pdf

Data publikacji:

2018

Wydawca:

Fundacja Centrum Badań Socjologicznych

Tematy:

road crash
safety measure
drivers' behaviour and attitude
deterrence effects

Opis:

This study investigated the deterrence effect of the police patrol on the road safety in China and the research purpose was achieved by questionnaire survey and data regression. Firstly, a questionnaire survey was carried out to investigate the drivers’ illegal behaviours and attitudes to safety measures, such as police patrol, surveillance cameras and warning signs, and 137 drivers participated in the survey; the statistical results showed that 45.3%, 4.4% and 16.8% of the respondents had the experience of speeding, driving under influencing of alcohol and fatigued driving respectively; all of the participants believed that traffic police patrol would change their dangerous driving behaviours and police patrol is most effective among three road safety measures based on the investigations. Secondly, data about police patrol frequency and road crash rate on the road segment was collected from the local Transportation Administration Bureau and the regression analysis based on the data was conducted to investigate the direct effect of traffic police patrol on road safety improvement. The results indicated that increasing the frequency of police patrol has an obvious positive effect on improving the road safety and it is consistent with the results from self-reported questionnaire survey.

Źródło:

Journal of Sustainable Development of Transport and Logistics; 2018, 3, 3; 69-76
2520-2979

Pojawia się w:

Journal of Sustainable Development of Transport and Logistics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Application of nitrogen injection displacement for fire extinguishment
Zwalczanie pożarów endogenicznych za pomocą azotu

Autorzy:

Tang, Q.
Qin, R. X.
Chen, Q. H.
Zhang, G. S.

Powiązania:

https://bibliotekanauki.pl/articles/348639.pdf

Data publikacji:

2012

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

technologia ochrony przeciwpożarowej w szczelnych zrobach
technologia ochrony przeciw pożarowej metodą wtrysku gazów szlachetnych
technologia zwalczania pożarów za pomocą azotu
technologia separacji
nowe rozwiązania w technologii ochrony pożarowej
fire-prevented technology in sealed gob
fire-prevented technology by infusing inert gases
infusing-permuting nitrogen technology
separation technology
new development in fire-prevented technology

Opis:

The article introduced the basic theory of nitrogen injection displacement for fire extinguish, which is presented by Professor Guoshu Zhang, applied this technology in coal mine, and then verified the results through numerical simulation, the production got from the technology's application. Presented some new views in specific implementation of nitrogen injection displacement for fire extinguish.
W niniejszym artykule opisano zastosowanie podstawowej teorii wypełniania zrobów azotem podczas gaszenia pożarów endogenicznych zaprezentowanej przez profesora Guoshu Zhang, jej zastosowanie w kopalni oraz weryfikację wyników za pomocą symulacji numerycznej i uzyskane efekty w związku z zastosowaniem tej technologii. Zaprezentowano szczegółowe zasady oraz poglądy na temat wypełniania zrobów azotem do zwalczania pożarów.

Źródło:

AGH Journal of Mining and Geoengineering; 2012, 36, 3; 345-351
1732-6702

Pojawia się w:

AGH Journal of Mining and Geoengineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

The Interaction of Water with Glycine: A Combined Inelastic Neutron Scattering and Raman Spectra Studies

Autorzy:

Zhang, P.
Zhang, Y.
Han, S.
Yan, Q.
Li, J.

Powiązania:

https://bibliotekanauki.pl/articles/2044762.pdf

Data publikacji:

2006-03

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

36.20.Ng
87.64.Je
25.40.Fq
82.30.Rs

Opis:

The vibrational dynamics of water around glycine was investigated by using Raman spectroscopy and inelastic neutron scattering. Experiments of deuterated glycine versus deuterium were performed as comparison. The study shows that for glycine, the exchange of proton-deuteron on the active NH$\text{}_{3}^{+}$ side was easy, whereas there was hardly exchange on the CH$\text{}_{2}$ side. Comparing different proportion of glycine vs. water molecules we obtained that the presence of water hardly changes the main features of glycine illustrating its hydrophobic character. The intralayer hydrogen bonds of glycine crystal are difficult to be replaced due to its stronger bond than water.

Źródło:

Acta Physica Polonica A; 2006, 109, 3; 399-404
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Effect of water activity and glass transition on critical preservation conditions of dried squids

Autorzy:

Ren, A.-Q.
Zhang, M.
Mujumdar, A.

Powiązania:

https://bibliotekanauki.pl/articles/25846.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

critical preservation condition
dried squid
glass transition
glass transition temperature
physical parameter
preservation
sorption isotherm
squid
water activity

Źródło:

International Agrophysics; 2011, 25, 3
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

A numerical approach in applying panel method for the added mass of a group of sections in fluids

Autorzy:

Zhang, D.
Li, P.
Wang, Q.
Yang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/38695713.pdf

Data publikacji:

2023

Wydawca:

Instytut Podstawowych Problemów Techniki PAN

Tematy:

numerical method
panel method
fluid-structure interaction
confined fluid
fluid mass coefficients

Opis:

This paper firstly expands an efficient numerical methodology developed from the source panel method to the added mass calculation of long column systems in fluid. Structures submerged in fluid are considered as two-dimensional and are discretized into a number of source panels. The influence coefficient matrices and the potential function are then calculated and the fluid forces are calculated by the unsteady Bernoulli equation. Finally, we utilize this present method to calculate the mass coefficients of some typical problems, which effectively verifies its feasibility and accuracy. This method takes into account both applicability and computational efficiency. On the one hand, in contrast to the analytical method which is only applicable to specific cross-sections, this method is applicable to arbitrary boundaries with C⁰ continuity in mathematics. On the other hand, this method requires less mesh and computation than commercial software. This paper extends the application of the source panel method which is widely used in aerodynamics to provide a reference for added mass calculation problems in engineering.

Źródło:

Archives of Mechanics; 2023, 75, 1-2; 151-168
0373-2029

Pojawia się w:

Archives of Mechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Sea ice management for oil and gas platforms in the Bohai Sea

Autorzy:

Zhang, D.
Yu, S.
Wang, Y.
Yue, Q.

Powiązania:

https://bibliotekanauki.pl/articles/258746.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

Bohai
sea ice management
ocean platform
ice-induced vibration
ice risk prediction

Opis:

Bohai is a typical marginal oil field in an ice region, where most of the oil and gas platforms are economical. Sea ice is the main factor that affects the safety of oil and gas platforms in Bohai. Due to the complexity of the ice load and ice-induced vibrations, there are large security risks when developing Bohai oil and gas in the winter. It is difficult to ensure the safe production of oil and gas in winter using existing sea ice disaster warning technologies. Based on winter oil and gas production in the Bohai Sea’s Liaodong Bay, a set of suitable sea ice management systems is proposed in this paper. These systems integrate sea ice monitoring, risk assessment and risk prediction technologies. Based on the risk warning system, an ice management model of a Bohai ice platform has been put into practice, which ensures the safe production of the platform in winter.

Źródło:

Polish Maritime Research; 2017, S 2; 195-204
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Magnetohydrodynamic Calculation on Double-Loop Channel Induction Tundish

Autorzy:

Yue, Q.
Pei, X.
Zhang, C.
Wang, X.

Powiązania:

https://bibliotekanauki.pl/articles/350969.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

induction heating
electromagnetic field
channel
tundish

Opis:

A mathematical model is developed to investigate the electromagnetic induction heating in a continuous casting tundish with the double-loop inductor. Maxwell’s equations are solved using finite element method to obtain the magnetic flux density, electromagnetic force, and Joule heating. Results show that the induced current through the two channels generates a current loop. The electromagnetic force points to the center of the channel, thus generating a pinch effect on the molten steel. With the skin effect and proximity effect, Joule heating rate reaches its maximum and minimum values at the corners and the center of the crosssection area respectively. Power ampere-turn has a significant influence on the electromagnetic force and Joule heating density. As ampere-turns vary from 3.6×10⁴ to 2.16×10⁵, Joule heating rate increases from 2.4 MW m^-3 to 85 MW m^-3. Electromagnetic force also increases from 8×10⁴ N m^-3 to 3×10⁶ N m^-3 in the center axis line of the channel. The present work reveals the relationship between magnetic flux density and electromagnetic force. The results will be helpful in adjusting the electromagnetic field in channel-induction furnaces and modifying the design of channel parameters.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 1; 329-336
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Catalytic performances of cross-linking humic acids supported Pd/Ni bimetallic catalyst for heck reaction

Autorzy:

Xu, Q.
Zhang, L.
Shi, W.
Cui, Y.

Powiązania:

https://bibliotekanauki.pl/articles/778727.pdf

Data publikacji:

2009

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

kwas humusowy
epichlorohydryna
katalizator bimetaliczny Pd/Ni
katalizator nośnikowy
reakcja Hecka
cross-linking humic acid
epichlorohydrin
Pd/Ni bimetallic catalyst
supported catalyst
Heck reaction

Opis:

The cross-linking humic acids (CL-HAs), epichlorohydrin as the cross-linking reagent and the supported Pd/Ni bimetallic catalysts (CL-HAs-Pd/Ni) were prepared and characterized by IR, AAS, XPS, TEM. The effects of reaction time, temperature, base, solvent and the amount of catalyst on the properties of the catalyst were studied. These catalysts could catalyze the Heck reaction of aryl halides and substituted aryl halides with acrylic acids or styrene successfully; the yields were all above 95%.

Źródło:

Polish Journal of Chemical Technology; 2009, 11, 3; 22-26
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

3-aminopropyltriethoxysilane functionalized nanoscale zero-valent iron for the removal of dyes from aqueous solution

Autorzy:

Zhang, J.
Liu, Q.
Ding, Y.
Bei, Y.

Powiązania:

https://bibliotekanauki.pl/articles/779270.pdf

Data publikacji:

2011

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

3-aminopropylotrietoksysilan
żelazo zerowartościowe
separacja magnetyczna
3-aminopropyltriethoxysilane
nano zero-valent iron
acid brilliant scarlet GR
reactive brilliant red K-2BP
magnetic separation

Opis:

Batch studies were conducted to investigate the potential of 3-aminopropyltriethoxysilane modified nano zero-valent iron (APS-NZVI) to adsorb two dyes (acid brilliant scarlet GR and reactive brilliant red K-2BP) from aqueous solution. APS-NZVI showed good adsorption performance for two dyes. Under the adsorption conditions of pH 4.5, initial concentration was 100 mg/L, and time=4h, the maximum adsorption capacities of APS-NZVI were 121.06 mg/g for acid brilliant scarlet GR and 191.5 mg/g for reactive brilliant red K-2BP, respectively. The results revealed that the adsorption behavior of the dyes on the nano-particles fitted well with the Langmuir model and the sorption kinetics fits well the pseudo-second-order rate equation.

Źródło:

Polish Journal of Chemical Technology; 2011, 13, 2; 35-39
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

The effect of surface functional groups of nanosilica on the properties of polyamide 6/SiO2 nanocomposite

Autorzy:

Xu, Q.
Chen, F.
Li, X.
Zhang, Z.

Powiązania:

https://bibliotekanauki.pl/articles/779538.pdf

Data publikacji:

2013

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

nanosilica
polyamide 6
nanocomposite
in situ polymerization

Opis:

The present study investigated the effect of the surface functional groups of nanosilica on the interfacial, crystallization, and thermal stability of polyamide 6/SiO2 (PA6/SiO2) nanocomposite, in which nanosilica was modified in situ with both 3-triethoxysilylpropylamine and 3-methacryloxypropyltrimethoxy silane¬ (KH-550 and KH-570). The FTIR analysis results showed the chemical bonding action between the reacting amino groups of nanosilica and end carboxyl groups of polyamide 6 enhanced with increasing the ratio of KH-550 and KH-570. The XRD spectrum indicated that the crystal structure of PA6/SiO2 nanocomposites tended to form α crystal type that was beneficial to an improvement of mechanical properties, and which was in agreement with the results of mechanical strength measurements. It was also found that crystallization temperature and crystallization rate of PA6/SiO2 nanocomposites were lower than that of neat polyamide 6.

Źródło:

Polish Journal of Chemical Technology; 2013, 15, 3; 20-24
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Research on relationship between carbon dioxide emissions, imports, exports, and population in China

Autorzy:

Jin, Q.-Y.
Zhang, J.
Gao, Y.-Q.
Su, X.
Fu, Y.-S.

Powiązania:

https://bibliotekanauki.pl/articles/207318.pdf

Data publikacji:

2014

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

population statistics
carbon dioxide
global warming
carbon dioxide emissions
total carbon
statystyki ludności
dwutlenek węgla
globalne ocieplenie
emisja dwutlenku węgla
węgiel całkowity

Opis:

Empirical relationships between carbon dioxide emission, imports, exports, and population have been investigated. An empirical model with carbon dioxide emissions, structure and scale of import and exports, populations was built Using ridge regression analysis and observed data from 1985 to 2006 in China, we examined the relationship between each part of carbon dioxide emission and corresponding coefficients, including GIV (gross imports value), GXV (gross exports value), and P (populations). The results have shown that the increasing trend in TCOE (total carbon dioxide emissions) was determined by the exports, while its standard level is determined by population. Increasing the imports may reduce TCOE. Considering working to expand economy, the best ways for China to reduce TCOE are to introduce advanced technology and take actions to guarantee strict execution of cut-emission policy. Although the increasing imports also can reduce TCOE, it is not reasonable for the global cut-emission policy. To control population is not applicable as the immense population base, so government's publicity for low-carbon live is a necessary and feasible way to reduce carbon dioxide emission.

Źródło:

Environment Protection Engineering; 2014, 40, 2; 75-85
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

An improved feature extraction method for rolling bearing fault diagnosis based on MEMD and PE

Autorzy:

Zhang, H.
Zhao, L.
Liu, Q.
Luo, J.
Wei, Q.
Zhou, Z.
Qu, Y.

Powiązania:

https://bibliotekanauki.pl/articles/259770.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

improved feature extraction method
rolling bearing fault diagnosis
MEMD
PE

Opis:

The health condition of rolling bearing can directly influence to the efficiency and lifecycle of rotating machinery, thus monitoring and diagnosing the faults of rolling bearing is of great importance. Unfortunately, vibration signals of rolling bearing are usually overwhelmed by external noise, so the fault frequencies of rolling bearing cannot be readily obtained. In this paper, an improved feature extraction method called IMFs_PE, which combines the multivariate empirical mode decomposition with the permutation entropy, is proposed to extract fault frequencies from the noisy bearing vibration signals. First, the raw bearing vibration signals are filtered by an optimal band-pass filter determined by SK to remove the irrelative noise which is not in the same frequency band of fault frequencies. Then the filtered signals are processed by the IMFs_PE to get rid of the relative noise which is in the same frequency band of fault frequencies. Finally, a frequency domain condition indicator FFR(Fault Frequency Ratio), which measures the magnitude of fault frequencies in frequency domain, is calculated to compare the effectiveness of the feature extraction methods. The feature extraction method proposed in this paper has advantages of removing both irrelative noise and relative noise over other feature extraction methods. The effectiveness of the proposed method is validated by simulated and experimental bearing signals. And the results are shown that the proposed method outperforms other state of the art algorithms with regards to fault feature extraction of rolling bearing.

Źródło:

Polish Maritime Research; 2018, S 2; 98-106
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 51.

Tytuł:

GP5 protein - based ELISA for the detection of PRRSV antibodies

Autorzy:

Wang, Y.
Guo, J.
Qiuao, S.
Li, Q.
Yang, J.
Jin, Q.
Zhang, G.

Powiązania:

https://bibliotekanauki.pl/articles/30629.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Opis:

Porcine reproductive and respiratory syndrome virus (PRRSV) is an important swine pathogen, causing huge economic losses each year worldwide. Immunization with vaccines containing the glycoprotein 5 (GP5) of PRRSV is the main measure to induce neutralizing antibodies and control the disease. Here, we developed a GP5 protein-based ELISA for detecting antibodies against PRRSV. The overall yield of purified GP5 in E. coli flask culture was more than 45 mg/L cell culture. Western blot and IFA indicated that the GP5 protein was highly immunogenic. After optimization and validation with IDEXX PRRS using 566 clinical sera, the DSN, DSP, and accuracy of GP5-ELISA were 81.39%, 75.96%, and 80.39%, respectively. Besides, GP5-ELISA is highly specific, showing no cross-reactions with sera against other important swine pathogens. Hence, GP5 is a good diagnostic antigen and the GP5 protein-based ELISA has the potential to be used in the field

Źródło:

Polish Journal of Veterinary Sciences; 2016, 19, 3
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 52.

Tytuł:

Theoretical Studies of High-nitrogen-containing Energetic Compounds Based on the s-Tetrazine Unit

Autorzy:

Man, T. T.
Wang, K.
Zhang, J.G.
Niu, X. Q.
Zhang, T. L.

Powiązania:

https://bibliotekanauki.pl/articles/358527.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

high-energy-density materials (HEDMs)
substituted s-tetrazine
compounds
electronic properties
thermodynamic properties
detonation
properties

Opis:

In order to develop new high-energy-density materials (HEDMs), we have investigated 12 substituted s-tetrazine (TZ) compounds, where s-tetrazine was substituted by amino, amido and related groups. Density functional theory (DFT) was used to predict the optimized geometries, electronic structures, total energy, heats of formation (HOFs) and densities. In addition the detonation properties were evaluated by using the VLW equation of state (EOS). The standard enthalpy of formation, the Gibbs free energy, entropy and equilibrium constants were used to estimate the success of the synthetic substitution reactions, which provided theoretical support for practical work. The bond dissociation energy (BDE) of bond C-R was calculated at each stage of the substitution reaction. The calculated results showed that substitution of amino, amido and their derivatives in the TZ ring enhances the HOF values and is favorable for increasing the thermal stability. The calculated detonation properties indicated that incorporating the above groups into the TZ ring is benefcial for improving the explosive performance. Considering the detonation properties and thermal stability, the 12 derivatives may be regarded as promising candidates as high-energy-density materials (HEDMs).

Źródło:

Central European Journal of Energetic Materials; 2013, 10, 2; 171-189
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 53.

Tytuł:

Analysis of the Thermal Behaviour of CL-20, Potassium Perchlorate, Lithium Perchlorate and Their Admixtures by DSC and TG

Autorzy:

Zhang, J.-J.
Guo, X.-J.
Jiao, Q.-J.
Zhang, H.-L.
Li, H.

Powiązania:

https://bibliotekanauki.pl/articles/358770.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

CL-20
potassium perchlorate
lithium perchlorate
thermal stability
phase transition

Opis:

The thermal decomposition characteristics of CL-20, potassium perchlorate (KP), lithium perchlorate (LP), a CL-20/KP mixture, and a CL-20/LP mixture were studied using thermogravimetry-differential scanning calorimetry (TG-DSC). The DSC curves for KP exhibited three endothermic peaks and one exothermic peak. The first two endothermic peaks correspond to the rhombic-cubic transition and the fusion of KP, respectively, the third indicates the fusion of KCl, while the exothermic peak is attributed to the decomposition of KP. The DSC curves obtained from LP showed four endothermic peaks and one exothermic peak. The first two endothermic peaks indicate the loss of adsorbed water and water of crystallization, while the third and fourth are associated with the fusion of LP and LiCl, respectively; the exothermic peak is due to the decomposition of LP. The presence of KP had little effect on the thermal decomposition of CL-20 while the addition of LP increased the temperature at which CL-20 exhibits an exothermic peak. In addition, the thermal decomposition of LP appeared to be catalyzed by the presence of CL-20.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 1; 115-130
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 54.

Tytuł:

Pre-concentration of graphite and LiCoO2 in spent lithium-ion batteries using enhanced gravity concentrator

Autorzy:

Zhu, X,-N.
Tao, Y.-J.
He, Y.-Q.
Zhang, Y.
Sun, Q.-X.

Powiązania:

https://bibliotekanauki.pl/articles/109609.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

spent lithium-ion batteries
electrode material
resource utilization
pre-concentration
enhanced gravity concentrator

Opis:

The pre-concentration of electrode material of spent lithium-ion battery has great significance on the resource utilization and environmental protection. The feasibility of separation of graphite and LiCoO2 based on density difference using the enhanced gravity concentrator was verified in this paper. Combustion characteristics of LiCoO2 and graphite were used to propose a simple evaluation index of separation efficiency. Separation tests were carried out to specify the influence of operating parameters on the separation efficiency. Moreover, the effect of particle size on the separation performance was studied. Combustion characteristics results showed that mass loss of graphite was much greater than that of LiCoO2. Thus, mass loss were used to evaluate the purity of product. Effective separation of graphite and LiCoO2 was achieved by the enhanced centrifugal separator. Separation results showed that increasing centrifugal force decreased the overflow yield and increased the graphite content of the overflow stream. In addition, yield of overflow grew an increase in fluidization water pressure, while the purity of graphite in overflow decreased. The effect of particle size on the separation efficiency was also significant, the separation efficiency decreased with the decreasing of particle size.

Źródło:

Physicochemical Problems of Mineral Processing; 2018, 54, 2; 293-299
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 55.

Tytuł:

Evaluation of the Correlation between the Structure and Quality of Compact Blend Yarns
Ocena korelacji pomiędzy strukturą i jakością mieszankowych przędz kompaktowych przędzionych dwoma różnymi przędzarkami obrączkowymi

Autorzy:

Li, W.
Su, X.
Zhang, Y.
Xie, C.
Wei, Q.

Powiązania:

https://bibliotekanauki.pl/articles/233941.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych

Tematy:

pneumatic compact spinning
blend yarn
hamilton index method
high speed camera
pneumatyczne przędzarki kompaktowe
mieszankowe przędze
Metoda indeksu Hamiltona
szybkobieżna kamera cyfrowa

Opis:

Pneumatic compact spinning is the most widely used compact spinning technology at present, which is implemented by using negative airflow to condense the fibre bundle and decrease the spinning triangle. Roller-type and Lattice apron-type compact spinning are two major kinds of pneumatic compact spinning now. In this paper, blend yarn qualities spun by one kind of roller-type compact spinning: complete condensing spinning (CCS), and one kind of Lattice apron-type compact spinning: 4-line rollers compact spinning (FRCS) were studied and analysed comparatively. First, 28.1, 18.5 and 12.3 tex JC60/T40 blend yarns and 18.5, 14.8 and 11.8 tex JC35/T65 blend yarns were spun on two kinds of compact spinning systems, respectively, and the effects of the blending ratio on yarn qualities were discussed. Then another two kinds of cotton blended yarns - JC60/R40 and JC60/M40 were spun. 28.1, 18.5, 14.8 tex JC60/R40 and 18.5, 14.8, 11.8 tex JC60/M40 were spun on two kinds of compact spinning systems, respectively. Meanwhile the qualities of spun yarns were analysed by using two methods. First with a high speed camera system - OLYMPUS i-speed3 (OLYMPUS Image Co., Ltd., Japan), the condensing process of a fibre strand in the condensing zones were captured and analysed. Second the cross sections of the spun yarns were presented using a Y172 Hardy’s thin cross-section sampling device (Nantong Hongda Experiment Instruments Co., Ltd., China). The corresponding Hamilton Index was then calculated, and the fibre radial distributions in the yarn cross section were analysed. The results show that the fibre condensing effects are increased with an increase in the ratio of cotton fibre on the blended yarn for both kinds of compact spinning, especially the FRCS. Meanwhile with an increase in the ratio of polyester fibre on the blended yarn, the advantage of CCS with respect to yarn qualities increased. For both JC60/R40 and JC60/M40, cotton fibres are transferred to the outer part of the yarn body. However, the fibres in JC60/R40 yarn spun by CCS and those in JC60/M40 yarn spun by FRCS are distributed more randomly.
Przędzenie kompaktowe realizowane na zmodyfikowanych przędzarkach obrączkowych jest obecnie najbardziej rozpowszechnioną techniką przędzalniczą, która została wprowadzona na skalę przemysłową dzięki wykorzystaniu podciśnienia mającego na celu zagęszczenie przetwarzanego w przędzę strumienia włókien oraz zmniejszenie trójkąta przędzenia. Celem prezentowanych przez autorów badań była ocena porównawcza jakości i struktury przędz kompaktowych wytworzonych dwoma systemami kompaktowania. Przedstawiono wyniki badań jakości przędz obrączkowych kompaktowych mieszankowych. Przędze te wyprzędziono z mieszanek bawełny z włóknami poliestrowymi o udziale 65/35, mieszanek bawełny z jedwabiem celulozowym o udziale 60/40 oraz mieszanek bawełny z modalnymi włóknami wiskozowymi o udziale 60/40. Wytworzone przędze analizowano dwoma różnymi metodami. Pierwsza metoda polegała na rejestrowaniu za pośrednictwem szybkobieżnej kamery cyfrowej procesu zagęszczania tasiemki włókien w strefie jej zagęszczania, a następnie analizowaniu struktury tworzącej się przędzy. W drugiej metodzie sporządzano, przy pomocy stanowiska pomiarowego wyposażonego w urządzenie przeznaczone do pobierania próbek oraz mikroskopu, obrazy przekrojów poprzecznych wytworzonych przędz, a także obliczano odpowiednio wskaźniki migracji włókien w przekroju poprzecznym przędzy reprezentowane przez indeksy Hamiltona.

Źródło:

Fibres & Textiles in Eastern Europe; 2015, 6 (114); 55-67
1230-3666
2300-7354

Pojawia się w:

Fibres & Textiles in Eastern Europe

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 56.

Tytuł:

A geometric accuracy design method of multi-axis NC machine tool for improving machining accuracy reliability
Metoda projektowania i poprawy niezawodności dokładności obróbczej wieloosiowej obrabiarki NC wykorzystująca pojęcie dokładności geometrycznej

Autorzy:

Cai, L.
Zhang, Z.
Cheng, Q.
Liu, Z.
Gu, P.

Powiązania:

https://bibliotekanauki.pl/articles/301459.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

machine tool
geometric error
accuracy distribution
machining accuracy reliability
multi-body system theory
obrabiarka
błąd geometryczny
rozkład dokładności
niezawodność dokładności obróbki
teoria układów wielomasowych

Opis:

The reliability of machining accuracy is of great significance to performance evaluation and optimization design of the machine tools. Different geometric errors have various influences on the machining accuracy of the machine tools. The main emphasis of this paper is to propose a generalized method to distribute geometric accuracy of component for improving machining accuracy reliability under certain design requirements. By applying MBS theory, a comprehensive volumetric model explaining how individual errors in the components of a machine affect its volumetric accuracy (the coupling relationship) was established. In order to reflect the ability to reach the required machining accuracy, the concept of machining accuracy reliability is proposed in this paper. Based on advanced first order and second moment (AFOSM) theory, reliability and sensitivity with single failure modes were obtained and the model of machining accuracy reliability and the model of machining accuracy sensitivity with multiple failure modes were developed. By taking machining accuracy reliability as a measure of the ability of machine tool and taking machining accuracy sensitivity as a reference of optimizing the basic parameters of machine tools to design a machine tool, an accuracy distribution method of machine tools for improving machining accuracy reliability with multiple failure modes was developed and a case study example for a five-axis NC machine tool was used to demonstrate the effectiveness of this method. It is identified that each improvement of the geometric errors leads to a decrease in the maximum values and mean values of possibility of failure, and the gaps among reliability sensitivity of geometric parameter errors improved also decreased. This study suggests that it is possible to obtain the relationships between geometric errors and specify the accuracy grades of main feeding components of mechanical assemblies for improving machining accuracy reliability.
Niezawodność w zakresie dokładności obróbki ma wielkie znaczenie dla oceny funkcjonowania oraz projektowania optymalizacyjnego obrabiarek. Różne błędy geometryczne mają różny wpływ na dokładność obrabiarek. Głównym celem niniejszej pracy jest zaproponowanie uogólnionej metody rozkładu dokładności geometrycznej elementów składowych obrabiarki, pozwalającej na poprawę niezawodności w zakresie dokładności obróbczej przy spełnieniu pewnych wymagań projektowych. Dzięki zastosowaniu teorii układów wielomasowych MBS, opracowano kompleksowy model wolumetryczny, który wyjaśnia, w jaki sposób pojedyncze błędy występujące w elementach składowych obrabiarki wpływają na jej dokładność wolumetryczną (relacja sprzężeń). Zaproponowane w prezentowanym artykule pojęcie niezawodności dokładności obróbki odnosi się do możliwości uzyskania przez urządzenie wymaganej dokładności obróbki W oparciu o zaawansowaną teorię estymacji momentów AFOSM (Advanced First Order and Second Moment therory), obliczono niezawodność i czułość dla przypadku wystąpienia pojedynczej przyczyny uszkodzenia oraz opracowano model niezawodności dokładności obróbki oraz model czułości dokładności obróbki dla przypadku wystąpienia wielu przyczyn uszkodzeń. Przyjmując niezawodność dokładności obróbki za miarę poprawnego działania obrabiarki oraz przyjmując czułość dokładności obróbki za punkt odniesienia dla optymalizacji projektowej podstawowych parametrów obrabiarek, opracowano metodę, opartą na rozkładzie dokładności obrabiarki, mającą na celu poprawę niezawodności dokładności obróbki dla przypadku wystąpienia wielu przyczyn uszkodzeń. Skuteczność metody wykazano na przykładzie pięcio-osiowej obrabiarki NC. Stwierdzono, że każda korekta błędu geometrycznego prowadzi do spadku maksymalnych i średnich wartości możliwości wystąpienia uszkodzenia oraz zmniejsza rozstęp między poszczególnymi czułościami niezawodnościowymi skorygowanych błędów parametrów geometrycznych. Przedstawione badania wskazują, że możliwe jest ustalenie związku pomiędzy błędami geometrycznymi oraz określenie stopni dokładności głównych elementów składowych zespołów mechanicznych odpowiedzialnych za ruch posuwowy obrabiarki w celu poprawy niezawodności dokładności obróbki.

Źródło:

Eksploatacja i Niezawodność; 2015, 17, 1; 143-155
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 57.

Tytuł:

Constitutive model for time-dependent ratchetting of SS304 stainless steel: simulation and its finite element analysis
Konstytutywny model zależnego od czasu zjawiska ratchetingu dla stali SS304 – symulacja i analiza metodą elementów skończonych

Autorzy:

Jiang, X.
Zhu, Y.
Hong, J.
Zhang, Y.
Kan, Q.

Powiązania:

https://bibliotekanauki.pl/articles/280590.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej

Tematy:

ratchetting
time-dependence
constitutive model
finite element method

Opis:

Time-dependent ratchetting behaviour of SS304 stainless steel was experimentally conducted at room temperature and 973K. The material shows distinct time-dependent deformation. However, under cyclic stressing with a certain peak/valley stress hold and at 973K, more significant time-dependent inelastic behaviour was observed. Based on the Abdel-Karim-Ohno nonlinear kinematic hardening rule with the static recovery term, a time-dependent hardening rule incorporating an internal variable in the dynamic recovery term of the back stress is proposed to reasonably describe the evolution behaviour of time-dependent ratchetting with a certain peak/valley stress hold and at high temperature. Simultaneously, the proposed model is implemented into the ANSYS finite element package by User Programmable Features (UPFs). It is shown that the customized ANSYS model exhibits better performance than the reference model, especially under cyclic stressing with the certain peak/Valley stress hold and at high temperature.
W pracy przedstawiono wyniki badań eksperymentalnych nad zależnym od czasu procesem zmęczeniowym typu ratcheting przeprowadzonych w temperaturze pokojowej oraz podwyższonej do 973K. Materiał wykazał wyraźnie zależną od czasu funkcję deformacji. Podczas cyklicznego obciążania przy zadanych wartościach min/max naprężeń w temperaturze 973K zaobserwowano silnie nieliniowe i zależne od czasu zachowanie się badanej stali. Do wyjaśnienia tego zjawiska, zwanego ratchetingiem zależnym od czasu, wykorzystano model umocnienia materiału oparty na nieliniowej formule kinematycznego umocnienia Abdela-Karima-Ohno ze statycznym członem odprężania. Model ten zmodyfikowano, wprowadzając wewnętrzną zmienną w dynamicznym członie odprężania przy obciążeniu powrotnym. Jednocześnie zaproponowany model wdrożono do systemu ANSYS poprzez zastosowanie pakietu User Programmable Features (UPFs). Wykazano, że taka modyfikacja systemu ANSYS charakteryzuje się lepszym działaniem w stosunku do standardowego oprogramowania. Jest to szczególnie zauważalne dla symulacji cyklicznego obciążenia stali w podwyższonej temperaturze.

Źródło:

Journal of Theoretical and Applied Mechanics; 2013, 51, 1; 63-73
1429-2955

Pojawia się w:

Journal of Theoretical and Applied Mechanics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 58.

Tytuł:

3-D simulation of vertical-axial tidal current turbine

Autorzy:

Zhang, Z.
Ma, Y.
Jiang, J.
Liu, W.
Ma, Q.

Powiązania:

https://bibliotekanauki.pl/articles/260421.pdf

Data publikacji:

2016

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

tidal current energy
vertical-axial turbine
hydrodynamic performance
CFD
numerical simulation
3-D effect

Opis:

Vertical-axial tidal current turbine is the key for the energy converter, which has the advantages of simple structure, adaptability to flow and uncomplex convection device. It has become the hot point for research and application recently. At present, the study on the hydrodynamic performance of vertical-axial tidal current turbine is almost on 2-D numerical simulation, without the consideration of 3-D effect. CFD (Computational Fluid Dynamics) method and blade optimal control technique are used to improve accuracy in the prediction of tidal current turbine hydrodynamic performance. Numerical simulation of vertical-axial tidal current turbine is validated. Fixed and variable deflection angle turbine are comparatively studied to analysis the influence of 3-D effect and the character of fluid field and pressure field. The method, put the plate on the end of blade, of reduce the energy loss caused by 3-D effect is proposed. The 3-D CFD numerical model of vertical-axial tidal current turbine hydrodynamic performance in this study may provide theoretical, methodical and technical reference for the optimal design of turbine.

Źródło:

Polish Maritime Research; 2016, 4; 73-83
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Effect of temperature control and high humidity on the preservation of Jufeng grapes

Autorzy:

Zhang, M.
Tao, Q.
Huan, Y.
Wang, H.
Li, C.

Powiązania:

https://bibliotekanauki.pl/articles/24881.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Źródło:

International Agrophysics; 2002, 16, 4; 277-281
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 60.

Tytuł:

Experimental study on thermo physical parameter of loose coal bulk
Badania eksperymentalne parametrów termofizycznych luźnych brył węgla

Autorzy:

Chen, Q. H.
Dai, G. L.
Zhang, G. S.
Fan, X. Q.
Qin, R. X.

Powiązania:

https://bibliotekanauki.pl/articles/348819.pdf

Data publikacji:

2012

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

parametry termofizyczne
luźny węgiel
badania eksperymentalne
współczynniki wpływu
thermo-physical parameters
loose coal
experimental study
influence factors

Opis:

Experimental study was carried out on the thermo physical parameter of loose coal bulk, based on hot-wired method, the relationship between thermo physical parameter of loose coal bulk and each influence factors obtained, and the result shows that the thermal conductivity increased and thermal capacity decreased on condition that the coal rank increased, with the increasing of water content, thermal conductivity and thermal capacity are both have the trend of ascent. Within the experimental temperature limit (< 110 degrees of Celsius), thermal conductivity shows linear growth trend with the increasing of temperature. When voidage increased, thermal conductivity decreased, but the relevance between thermal capacity and voidage is unnoticeable.
Wyniki badań eksperymentalnych przeprowadzonych w celu określenia parametrów termofizycznych luźnych brył węgla metodą "gorącej nici" (ang. hot-wire method) i zależności pomiędzy parametrem termofizycznym luźnych brył węgla a każdym z uzyskanych współczynników wpływu pokazują wzrost przewodności cieplnej i obniżenie pojemności cieplnej wraz z poprawą jakości węgla. Przy zwiększaniu zawartości wody przewodność cieplna i pojemność cieplna wykazują tendencje wzrostowe. W badanym zakresie temperatur (< 110 stopni Celsjusza) przewodność cieplna wzrasta liniowo wraz ze wzrostem temperatury. Zwiększenie przestrzeni pomiędzy elementami skutkowało obniżeniem przewodności cieplnej, jednak nie zaobserwowano związku pomiędzy pojemnością cieplną a większą przestrzenią między elementami.

Źródło:

AGH Journal of Mining and Geoengineering; 2012, 36, 3; 89-98
1732-6702

Pojawia się w:

AGH Journal of Mining and Geoengineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 61.

Tytuł:

Fully-phase optical image encryption in diffractive-imaging scheme with QR-code-based random illumination

Autorzy:

Wang, Z.
Zhang, Y.
Gong, Q.
Li, S.
Qin, Y.

Powiązania:

https://bibliotekanauki.pl/articles/174126.pdf

Data publikacji:

2017

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

optical encryption
diffractive imaging
fully phase
phase retrieval algorithm

Opis:

Based on a fully phase encoding and phase retrieval algorithm, a diffractive-imaging-based optical encryption scheme with random illumination is proposed. In the encryption process, a QR code image is placed in the optic path to modulate the incident light and thus generate a random illumination, which has been demonstrated to enable the proposed scheme to resist the multi-slice ptychographic phase retrieval algorithm attack. The plaintext is phase-encoded, and then encrypted by two random phase masks. The diffraction pattern in the output plane is recorded as ciphertext by a CCD camera. For decryption, an iterative phase retrieval algorithm with median filtering operation is implemented. Simulation results demonstrate the effectiveness, security, and robustness of the proposal.

Źródło:

Optica Applicata; 2017, 47, 2; 233-243
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 62.

Tytuł:

Converged ultra-wideband and multi-level wired signal downstream transport over single wavelength in wavelength-division multiplexing passive optical network

Autorzy:

Ma, H
Wang, F.
Wang, W.
Zhang, X
Yu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/174929.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

ultra-wideband (UWB)
multi-level amplitude switch keying (M-ASK)
wavelength-division multiplexing passive optical network (WDM-PON)

Opis:

Simultaneous providing services of ultra-wideband and wired signal over single wavelength can greatly decrease the complexity and reduce the costs of a wavelength-division multiplexing passive optical network. However, ultra-wideband signal occupies the spectrum range from 3.1 to 10.6 GHz, and a narrow idle frequency band (from 0 to 3.1 GHz) could be employed to transport wired signal with a limited rate. In this paper, we proposed a scheme to simultaneously provide ultra-wideband and wired services, in which the information rate of the wired signal is enhanced by employing a multi-level amplitude switch keying signal in the idle frequency band formed by ultra-wideband signal. In comparison with other advanced modulation formats used for wavelength-division multiplexing passive optical networks such as orthogonal frequency division multiplexing, multi-level amplitude switch keying signal can be easily received by using intensity modulation direct detection, which will greatly reduce the cost of end-users. Especially, if a multi-band ultra-wideband signal is substituted for the direct-sequence ultra-wideband signal, the available spectrum range to transport wired signal will be easily extended to 5 GHz as multi-band ultra-wideband signal has a narrower spectrum width and flexible center frequency, so 4-amplitude switch keying signal with a rate of 5 Gbaud will achieve an information rate of 10 Gbit/s.

Źródło:

Optica Applicata; 2015, 45, 4; 433-445
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Preparation, characterization and coagulation behaviour of a novel inorganic coagulant - polyferric(III)-magnesium(II) sulfate

Autorzy:

Liu, Z.
Li, S.
Zhang, H.
Nie, F.
Wang, Q.

Powiązania:

https://bibliotekanauki.pl/articles/207302.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

coagulation
infrared spectroscopy
magnesium
wastewater treatment
textile wastewater
coagulant
koagulacja
spektroskopia w podczerwieni
magnez
oczyszczanie ścieków
ścieki włókiennicze
koagulant

Opis:

A novel coagulant, polyferric(III)-magnesium(II) sulfate (PFMS), was prepared. The preparation technology was optimized and the optimized PFMS product was used to treat actual textile wastewater. The performance of PFMS was evaluated and compared with those of conventional coagulants. X-ray diffraction and infrared spectrometry show that PFMS is a macromolecular composite polymer of ferric and magnesium based on -OH bonds. The coagulation performance of PFMS is better than those of PFS, PAC, and PFC. The coagulation mechanism of PFMS in treating actual textile wastewater is primarily driven by charge neutralization at low dosages and co-precipitation netting at high dosages.

Źródło:

Environment Protection Engineering; 2013, 39, 3; 57-71
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 64.

Tytuł:

Optimal quasi-periodic preventive maintenance policies for a repairable system with stochastic maintenance interval
Optymalna strategia quasi-okresowej konserwacji zapobiegawczej systemu naprawialnego – czas między przeglądami jako wielkość stochastyczna

Autorzy:

Gao, W.
Zhang, Z.
Ji, H.
Zhou, Y.
Liu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/301503.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

maintenance
quasi-periodic imperfect preventive maintenance policy
implemented period
stochastic preventive maintenance interval
konserwacja
strategia quasi-okresowej niepełnej konserwacji zapobiegawczej
dopuszczalny okres realizacji przeglądu
czas między przeglądami jako wielkość stochastyczna

Opis:

The usual preventive maintenance (PM) of a repairable system is done before failure at integer multiples of time T. In some real cases, PM cannot be performed as soon as a planned PM period is reached because of effects of some random factors, while it is usually done within an implemented period, and thus it makes the PM period become a stochastic interval. From this viewpoint, a quasi-periodic imperfect preventive maintenance policy is proposed in this paper, in which a repairable system experiences either a minor failure or catastrophic failure when a failure occurs, and the first (N-1) PM intervals is divided into a planned PM period and an implemented period. In the former, the system may be suffered an unplanned PM for removing a catastrophic failure and performing a PM, whereas in the latter, the system is preventively maintained following an occurrence of a catastrophic failure or a dynamic PM plan, whichever comes first. At the Nth PM interval, the system is replaced either when a catastrophic failure occurs or operational time reaches T, whichever comes first. An optimization of the proposed mode is introduced, the existence and the uniqueness of the optimal solution are presented, and a useful constraint of the implemented period is obtained. Finally, a real case study of PM on Chinese diesel locomotives is examined to illustrate the proposed maintenance policy.
Zazwyczaj przeglądy okresowe systemu naprawialnego wykonuje się przed wystąpieniem uszkodzenia, w określonych odstępach czasu stanowiących całkowitą wielokrotność czasu T. W warunkach rzeczywistych, jednak, nie zawsze można przeprowadzić przegląd w zaplanowanym terminie ze względu na działanie pewnych losowych czynników, natomiast zazwyczaj przeprowadza się go w dopuszczalnym okresie realizacji, w związku z czym przedział czasu między przeglądami okresowymi staje się wielkością stochastyczną. Biorąc powyższe pod uwagę, w niniejszej pracy zaproponowano strategię quasi-okresowej konserwacji zapobiegawczej, która zakłada, że system naprawialny może ulec albo drobnemu uszkodzeniu albo uszkodzeniu katastroficznemu, a czas, do którego należy wykonać pierwszy przegląd okresowy (N-1) można podzielić na zaplanowany czas przeprowadzenia przeglądu oraz dopuszczalny okres realizacji przeglądu. W pierwszym przypadku, może wystąpić konieczność przeprowadzenia nieplanowanej konserwacji systemu mającej na celu usunięcie uszkodzenia katastroficznego, natomiast w drugim, konserwację przeprowadza się po wystąpieniu uszkodzenia katastroficznego lub zgodnie z dynamicznym harmonogramem przeglądów, zależnie od tego, która z sytuacji zaistnieje wcześniej. W N-tym terminie przeglądu okresowego, dokonuje się wymiany systemu, albo wskutek wystąpienia uszkodzenia katastroficznego albo gdy czas pracy systemu osiągnie wartość T, zależnie od tego, co nastąpi wcześniej. W artykule przedstawiono optymalizację proponowanego trybu działania, wykazano istnienie i jednoznaczność optymalnego rozwiązania oraz wyznaczono przydatne ograniczenie dopuszczalnego okresu realizacji. Na koniec, proponowaną politykę konserwacji zapobiegawczej zilustrowano studium przypadku chińskich lokomotyw spalinowych.

Źródło:

Eksploatacja i Niezawodność; 2015, 17, 3; 389-397
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 65.

Tytuł:

Theoretical and Experimental Study on Detonation Wave Propagation in Cylindrical High Explosive Charges with a Wave-shaper

Autorzy:

Pan, J.
Zhang, X.
He, Y.
Deng, Q.
Guan, Z.

Powiązania:

https://bibliotekanauki.pl/articles/358040.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

high explosive
detonation wave
Mach reflection
wave-shaper
Whitham method

Opis:

The use of a cylindrical high-explosive charge with a wave-shaper is an efficient way to obtain an ultra-high pressure and a convergent detonation wave. An analysis of flow fields corresponding to the regular and Mach reflection of detonation waves in a cylindrical high-explosive charge with a wave-shaper is presented in this paper. The pressure, flow velocity and triple point growth angle of the Mach stem were calculated. The Mach stem height was also determined by using the modified Whitham method. The results show that the Mach stem height rises from zero at the critical angle of Mach reflection and changes to the Chapman-Jouguet detonation state with the propagation of the detonation waves. Shock indentation experiments were conducted, in which a wave-shaper was used in a cylindrical high-explosive charge to form Mach reflection detonation waves. The results showed that the discrepancy between the experimental results and the theoretical calculations was less than 15%, which proves the validity of the proposed theoretical model.

Źródło:

Central European Journal of Energetic Materials; 2016, 13, 3; 658-676
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 66.

Tytuł:

Stability of air nucleus in liquid water and cavitation inception on marine engineering

Autorzy:

Fu, Q.
Chen, M.
Wang, X.
Zhu, R.
Zhang, G.

Powiązania:

https://bibliotekanauki.pl/articles/260137.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

air nuclei
water
molecular dynamics
stability
surface tension

Opis:

The micro air nucleus widely distributed in the ocean is a necessary condition for the cavitation of hydraulic machinery in seawater. In order to study the stability of air nucleus in seawater and cavitation inception, the computational domain of water molecules with air nucleus was studied using the method of molecular dynamics simulation, and the transient characteristics of air nucleus in liquid water were obtained. The key factors influencing nuclei stability were analyzed. The results showed that air nucleus with a certain mass could maintain the dynamic equilibrium in liquid water. The internal density of air nuclei had a critical value that allowed the nuclei to stably exist in water. The air nuclei mass was the decisive factor in its equilibrium volume in water, and the two were positively correlated. The internal density of air nuclei was negatively correlated with the nuclei radius when the nuclei was stable in water. Liquid surface tension was an important factor affecting the stability of the air nuclei. The larger the initial radius of nuclei, the smaller the water pressure, and the more likely the cavitation occurs.

Źródło:

Polish Maritime Research; 2018, S 3; 111-119
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 67.

Tytuł:

A parallel algorithm of icsym forcomplexsymmetric linear systems in quantum chemistry

Autorzy:

Zhang, Y.
Lv, Q.
Xiao, M.
Xie, G.
Breitkopf, P.

Powiązania:

https://bibliotekanauki.pl/articles/305677.pdf

Data publikacji:

2018

Wydawca:

Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH

Tematy:

complex symmetric linear systems
parallel computing
improved conjugate gradient-type iterative algorithm (ICSYM)

Opis:

Computational effort is a common issue for solving large-scale complex symmetric linear systems, particularly in quantum chemistry applications. In order to alleviate this problem, we propose a parallel algorithm of improved conjugate gradient-type iterative (ICSYM). Using three-term recurrence relation and or- thogonal properties of residual vectors to replace the tridiagonalization process of classical CSYM, which allows to decrease the degree of the reduce-operator from two to one communication at each iteration and to reduce the amount of vector updates and vector multiplications. Several numerical examples are implemented to show that high performance of proposed improved version is obtained both in convergent rate and in parallel efficiency.

Źródło:

Computer Science; 2018, 19 (4); 385-401
1508-2806
2300-7036

Pojawia się w:

Computer Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 68.

Tytuł:

Efficient learning variable impedance control for industrial robots

Autorzy:

Li, C.
Zhang, Z.
Xia, G.
Xie, X.
Zhu, Q.

Powiązania:

https://bibliotekanauki.pl/articles/200716.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

variable impedance control
reinforcement learning
efficient
Gaussian process
industrial robots
impedancja
poprawa efektywności
wydajność
model Gaussa
roboty przemysłowe

Opis:

Compared with the robots, humans can learn to perform various contact tasks in unstructured environments by modulating arm impedance characteristics. In this article, we consider endowing this compliant ability to the industrial robots to effectively learn to perform repetitive force-sensitive tasks. Current learning impedance control methods usually suffer from inefficiency. This paper establishes an efficient variable impedance control method. To improve the learning efficiency, we employ the probabilistic Gaussian process model as the transition dynamics of the system for internal simulation, permitting long-term inference and planning in a Bayesian manner. Then, the optimal impedance regulation strategy is searched using a model-based reinforcement learning algorithm. The effectiveness and efficiency of the proposed method are verified through force control tasks using a 6-DoFs Reinovo industrial manipulator.

Źródło:

Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 2; 201-212
0239-7528

Pojawia się w:

Bulletin of the Polish Academy of Sciences. Technical Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 69.

Tytuł:

Optimization and evaluation of alkali-pretreated Paeonia ostii seed coats as adsorbent for the removal of MB from aqueous solution

Autorzy:

Liu, Q.
Li, T.
Zhang, S.
Qu, L.
Ren, B.

Powiązania:

https://bibliotekanauki.pl/articles/779066.pdf

Data publikacji:

2018

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Alkali-pretreated Paeonia ostii seed coats
Adsorption
Methylene blue
Mechanism

Opis:

A novel efficient adsorbent, alkali-pretreated Paeonia ostii seed coats (AP-PSC), was investigated for the removal of methylene blue (MB) dye from solution. Orthogonal array design was applied to optimize the process parameters viz. alkali concentration, liquid-solid ratio (LSR) and pretreatment time. The results revealed that the optimal pretreatment conditions were at 0.8% (w/w) NaOH with LSR of 0.35 L g^–1  treating for 50 min. Equilibrium and kinetic studies indicated that Langmuir isotherm and Pseudo-second-order models described the experimental data well. The maximum adsorption capability was of 368.2 mg g^–1  for MB at 25°C. Thermodynamic parameters suggested that the AP-PSC adsorption process was physical, endothermic and spontaneous. Furthermore, the adsorption process was influenced by several interactive mechanisms, including ion-exchange, as well as Van der Waals forces and hydrogen bonds that occur concomitantly. It was concluded that AP-PSC may be potential as an efficient adsorbent to remove MB from solution.

Źródło:

Polish Journal of Chemical Technology; 2018, 20, 3; 29-36
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 70.

Tytuł:

PIV measurement of tube-side in a shell and tube heat exchanger

Autorzy:

Wang, K.
Zhang, Z.
Liu, Q.
Tu, X.
Hyoung-Bum, K.

Powiązania:

https://bibliotekanauki.pl/articles/778192.pdf

Data publikacji:

2018

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

shell and tube heat exchanger
tube-side
PIV
unsteady flow

Opis:

In order to improve the performance of the shell and tube heat exchanger, a porous baffle and a splitter bar are employed in this research. Through the arrangement of the porous baffle in the tube-side inlet and the splitter bar in the tube, the flow distribution of liquid in the heat exchanger is improved. PIV technology is used to investigate the unsteady flow in the tube-side inlet and the outlet of different models. The porous baffle significantly improves the flow of fluid in the shell and tube heat exchanger, especially by eliminating/minimizing the maldistribution of fluid flow in the tube-side inlet. The performance of the arc baffle is better than that of the straight baffle. The splitter bar has a minimal effect on the flow field of the tube-side inlet, but it effectively improves the flow in the tube bundle and restrains the vortex generation in the tube-side outlet.

Źródło:

Polish Journal of Chemical Technology; 2018, 20, 1; 60-66
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 71.

Tytuł:

The cavitation nuclei transient characteristics of Lennard-Jones fluid in cavitation inception

Autorzy:

Fu, Q.
Zhang, B.
Zhao, Y.
Zhu, R.
Liu, G.
Li, M.

Powiązania:

https://bibliotekanauki.pl/articles/259255.pdf

Data publikacji:

2018

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

cavitation nuclei
molecular dynamics simulation
Lennard-Jones fluid
cavitation inception
nucleation

Opis:

In the field of ocean engineering, cavitation is widespread, for the study of cavitation nuclei transient characteristics in cavitation inception, we applied theoretical analysis and molecular dynamics (MD) simulation to study Lennard-Jones (L-J) fluid with different initial cavitation nuclei under the NVT-constant ensemble in this manuscript. The results showed that in cavitation inception, due to the decrease of liquid local pressure, the liquid molecules would enter the cavitation nuclei, which contributed to the growth of cavitation nuclei. By using molecular potential energy, it was found that the molecular potential energy was higher in cavitation nuclei part, while the liquid molecular potential energy changes greatly at the beginning of the cavitation nuclei growth. The density of the liquid and the surface layer changes more obvious, but density of vapor in the bubble changes inconspicuously. With the growth of cavitation nuclei, the RDF peak intensity increased, the peak width narrowed and the first valley moved inner. When cavitation nuclei initial size reduced, the peak intensity reduced, the corresponding rbin increased. With the decrease of the initial cavitation nuclei, the system pressure and total energy achieved a balance longer, and correspondingly, they were smaller. In addition, at the beginning of the cavitation nuclei growth, the total energy and system pressure changed greatly.

Źródło:

Polish Maritime Research; 2018, S 2; 75-84
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

Analysis of future climate scenarios and their impact on agriculture in eastern Arkansas, United States
Analiza scenariuszy klimatycznych i ich wpływ na rolnictwo we wschodniej części Arkansas

Autorzy:

Magugu, J. W.
Feng, S.
Huang, Q.
Zhang, Y.
West, G. H.

Powiązania:

https://bibliotekanauki.pl/articles/292796.pdf

Data publikacji:

2018

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

agriculture
climate change
climate scenarios
precipitation
temperature
opady
rolnictwo
scenariusze klimatyczne
temperatura
zmiany klimatu

Opis:

Impact of climate change on crop growth is dynamic and difficult to quantify due to heterogeneity of the associated effects and their interactions within the Earth system. The main objective of this study is to establish how future climate change might affect agriculture, through an assessment of temperature and precipitation driven parameters. These include percentage number of rainy days with extreme precipitation, percentage of extreme precipitation relative to wet days, first fall frost days, last spring frost days, growing degree days, growing season length and the total precipitation. Results show modest increase in total precipitation with a slight increase in extreme precipitation, representing up to 2.2% increase by 2060 under representative concentration pathway (RCP 8.5) scenario. There would be late first fall frost days, early last spring frost days and increased growing season length by up to 2 weeks in 2060. The growing degree days are projected to increase under all scenarios for all crops, with cotton showing the largest increase of up to 37% relative to the baseline period.
Wpływ zmian klimatu na wzrost upraw jest dynamiczny i trudny do ilościowej oceny z powodu różnorodności powiązanych efektów i ich interakcji w całym systemie Ziemi. Głównym celem badań prezentowanych w niniejszej pracy było ustalenie, jak zmiany klimatu w przyszłości mogą wpłynąć na rolnictwo, na podstawie oceny parametrów związanych z temperaturą i opadami. Analizowano następujące parametry: udział (w %) dni deszczowych z ekstremalnym opadem, udział ekstremalnych opadów w stosunku do opadów ogółem, pierwsze jesienne dni z mrozem, ostatnie wiosenne dni z mrozem, stopniodni w sezonie wegetacyjnym, długość sezonu wegetacyjnego, i sumę opadów. Wyniki wykazują umiarkowany wzrost całkowitych opadów i niewielki wzrost opadów ekstremalnych – do 2,2% do roku 2060 wg scenariusza Representative Concentration Pathway (RCP 8.5). W 2060 roku pierwsze jesienne dni z mrozem wystąpią później, ostatnie wiosenne dni z mrozem wystąpią wcześniej, a sezon wegetacyjny wydłuży się o ok. 2 tygodnie. Zgodnie ze wszystkimi scenariuszami przewiduje się, że liczba stopniodni w sezonie wegetacyjnym zwiększy się dla wszystkich upraw, a największy przyrost (maksymalnie o 37%) w stosunku do okresu bazowego prognozuje się dla upraw bawełny.

Źródło:

Journal of Water and Land Development; 2018, 37; 97-112
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 73.

Tytuł:

Climatic signals in tree rings of Juniperus turkestanica in the Gulcha River Basin (Kyrgyzstan), reveals the recent wetting trend of high Asia

Autorzy:

Chen, F.
He, Q.
Bakytbek, E.
Yu, S.-L.
Zhang, R.-B.

Powiązania:

https://bibliotekanauki.pl/articles/41289.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Opis:

Drought variability of Kyrgyzstan is an important component of climate change of high Asia. Long-term information about the history of drought is, however, limited because the instrumental records are short. Here, we developed three chronologies for juniper trees (Juniperus turkestanica) under different microsite conditions in the Gulcha River Basin, Kyrgyzstan. The three chronologies (GUL, GUR and GUD) were compared with climate data which covered the study area. Growth of the GUL site correlates positively with May–June precipitation of the current growing season and September precipitation of the previous year, but negatively with temperatures of prior July, current May and July. Growth of the GUR site correlates positively with precipitation of current May and September, and negatively with temperature of current June and July. Ring width at GUD site is negatively correlated with temperature of the current May and July, and positively correlated with precipitation of prior December and current September. Response analysis shows that water availability is the main factor limiting the radial growth of juniper trees at the GUL and GUD sites. Based on the relationships derived from climate response analyses, the potential of tree-ring chronologies from this species to provide drought reconstructions in the Gulcha River Basin has been established. The GUL chronology and other moisture sensitive tree-ring series from high Asia capture the recent wetting trend. The records contribute to a growing tree-ring network for high Asia, including sites in China, Kyrgyzstan, Pakistan and Tajikistan.

Źródło:

Dendrobiology; 2015, 74
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 74.

Tytuł:

Kinetics of photoelectrocatalytic degradation of diclofenac using N, S co-doped TiO2 nano-crystallite decorated TiO2 nanotube arrays photoelectrode

Autorzy:

Cui, Y.
Deng, X.
Ma, Q.
Zhang, H.
Cheng, X.
Li, X.
Xie, M.
Cheng, Q.
Li, B.

Powiązania:

https://bibliotekanauki.pl/articles/207955.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

effluents
nanotubes
sodium sulfate
sulfur compounds
yarn
photoelectrocatalytic degradation
ścieki
nanorurki
siarczan sodu
związki siarki
przędza

Opis:

As a non-steroidal anti-inflammatory drug, diclofenac, was commonly used as analgesic, antiarthritic and antirheumatic, and has frequently been detected in municipal wastewater treatment plants (MWTPs) effluents and demonstrated to be potentially environmental risk on human beings. In the present study, N, S co-doped TiO₂ nano-crystallites decorated TiO₂ nano-tube arrays (N, S-TiO₂ NCs/TiO₂ NTAs) photoelectrode was used to degrade diclofenac containing wastewater. In addition, the effects of some critical parameters including initial pH, external positive potential, sodium sulfate concentration and initial diclofenac concentration on the photoelectrocatalytic (PEC) degradation of diclofenac containing wastewater and dynamic characteristics were investigated systematically. Results showed that N, S-TiO₂ NCs/TiO₂ NTAs photoelectrode exhibited high PEC efficiency for the degradation of diclofenac, in which the PEC processes fitted well with the Langmuir–Hinshelwood (L–H) model. Furthermore, external additional anions such as Cl^–, ClO^– and NO₃ – played an important role in inhibiting the degradation of diclofenac. Also, the N, S-TiO₂ NCs/TiO₂ NTAs photoelectrode possessed good stability for consecutive applications for degradation of diclofenac, which could potentially be utilized in wastewater treatment.

Źródło:

Environment Protection Engineering; 2018, 44, 2; 117-130
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

A new troodontid theropod from the Late Cretaceous of central China, and the radiation of Asian troodontids

Autorzy:

Lu, J
Xu, L.
Liu, Y.
Zhang, X.
Jia, S.
Ji, Q.

Powiązania:

https://bibliotekanauki.pl/articles/20912.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Tematy:

new theropod
Late Cretaceous
Central China
Asian troodontid
troodontid
Theropoda
Troodontidae
Xixiasaurus
Cretaceous
Henan province
China
paleontology

Opis:

A new troodontid dinosaur, Xixiasaurus henanensis gen. et sp. nov., from the Upper Cretaceous Majiacun Formation of the Xixia Basin, Henan Province, is erected, based on a partial skull. It is characterized by bearing 22 maxillary teeth, a distinct opening on the lateral surface of the base of nasal process of the premaxilla, the rostral end of the upper jaw forming a tapered U−shape, and the mandibular symphyseal region slightly inflected medially. Xixiasaurus is most closely related to the Mongolian Byronosaurus among troodontids. Byronosaurus, Urbacodon, and Xixiasaurus may form a new clade, suggesting an endemic radiation of troodontids across Asia, including multiple taxa without dental serrations. The discovery of Xixiasaurus in the Xixia Basin may imply that the Xixiasaurus−bearing Majiacun Formation is Campanian in age.

Źródło:

Acta Palaeontologica Polonica; 2010, 55, 3; 381-388
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Experimental Investigation on the Compression Behaviours of 3D Angle‑interlock Woven Composites with Carbons Nanotube under High Strain Rates
Eksperymentalne badanie ściskania kompozytów 3D wzmacnianych tkaninami o skośnym splocie interlokowym modyfikowanych nanorurkami węglowymi przy dużych szybkościach odkształcania

Autorzy:

Ma, P
Jiang, G
Zhang, F
Chen, Q
Miao, X
Cong, H

Powiązania:

https://bibliotekanauki.pl/articles/233089.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych

Tematy:

3D angle-interlock woven composites
carbon nanotubes (CNTs)
impact compression behaviours
high strain rates
badanie ściskania kompozytów 3D
nanorurki węglowe (CNT)
zachowanie wpływu kompresji
duże szybkości odkształcania

Opis:

The compressive properties of 3D angle-interlock woven/epoxy resin composites with various carbon nanotube (CNTs) contents were investigated under quasi-static and high strain rate loading to evaluate the compressive failure modes, which were influenced by various CNT contents and different strain rates. The results indicated that the stress strain curves were strain rate sensitive, and the compressive failure stress of composites with various CNT contents were increased with a change the strain rates and CNT contents. The compressive failure modes of 3D angle-interlock woven composites without CNT tended to be in shear deformation, delamination fibre breakage and matrix crack together, and the failure modes of 3D angle-interlock woven composites with high CNT contents presented delamination and shear deformation.
Badano właściwości ściskające kompozytów 3D wzmacnianych tkaninami o skośnym splocie interlokowym modyfikowanych nanorurkami węglowymi. W celu wyznaczenia uszkodzeń powstałych na skutek ściskania, na które wpływa zawartość nanorurek i szybkości odkształcania, badania przeprowadzono pod obciążeniem quasi-statycznym i przy dużych szybkościach ściskania. Wyniki wykazały, że krzywe ściskania zależały od szybkości odkształcania i zawartości nanorurek. Uszkodzenia mają charakter rozwarstwienia i deformacji pod wpływem naprężeń ścinających.

Źródło:

Fibres & Textiles in Eastern Europe; 2015, 2 (110); 44-50
1230-3666
2300-7354

Pojawia się w:

Fibres & Textiles in Eastern Europe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Smart services for enhancing personal competence in Industrie 4.0 digital factory
Usługi typu smart służące zwiększeniu kompetencji personalnych w zakładzie przemysłowym typu Industrie 4.0

Autorzy:

Sun, J.
Gao, M.
Wang, Q.
Jiang, M.
Zhang, X.
Schmitt, R.

Powiązania:

https://bibliotekanauki.pl/articles/362246.pdf

Data publikacji:

2018

Wydawca:

Wyższa Szkoła Logistyki

Tematy:

Industrie 4.0
industrial Internet-of-Things
indoor localization
smart wearables
augmented reality
enhancement of productivity
przemysłowy Internet rzeczy
lokalizacja wewnętrzna
nośniki smart
rozszerzona rzeczywistość
poprawa produktywności

Opis:

Background: Adaptive digitalization and networking of machines, working parts, employees and other entities on the plant floor are core of realizing industry 4.0, so that information and instruction will be available everywhere and all the time in the production process. Thus, smart devices, especially smart wearables, will play a very important role to help workers being integrated in the in the future manufacturing environment, as information need to be transferred faster and with the right level of detailing with respect to the individual need of workers, factory managers etc. Methods: The implementation of an indoor localization system using Bluetooth beacons in the shop floor as part of an enterprise IoT platform was introduced. This sensor network is aimed to implement tracing and tracking of workers and working parts in the future smart factory, as well as the to the networking of the smart wearables with existing manufacturing machines. The investigated problem was the inaccuracy and the instability of the sensor signals by such Bluetooth sensor networks. To solve the problem, various algorithms were investigated. Results and conclusions: The possible solution of given problem was solved by finding an algorithm improving the communication between devices. Together with the location information from Beacon network and orientation information from the compass sensor, it is able to determine the machine in the near, which the employee with the Smart Glasses is currently pointing to.
Wstęp: Zastosowanie sieciowych rozwiązań dla urządzeń i ich części, jak również jako wspomożenie dla pracowników na poziomie hali produkcyjnej jest podstawowym elementem wdrożenia Industry 4.0., dzięki czemu w każdym momencie i w każdym miejsce zapewnia się dostępność do potrzebnej informacji. W związku z tym, urządzenia mobilne typu smart będą odgrywały ważną rolę w integrowaniu pracowników w środowisko produkcyjne w przyszłości, informacja będzie mogła być przekazywana szybciej i z większą szczegółowością w odniesieniu do poszczególnych pracowników czy kadry zarządzającej. Metody: Zastosowanie wewnętrznej lokalizacji przy użyciu Bluetooth beaconów na poziomie hali produkcyjnej jako fragmentu zakładowej platformy Internetu rzeczy zostało wdrożone. Sieć sensorów ma na celu śledzenie pracowników oraz urządzeń w przyszłościowym zakładzie produkcyjnym, jak również ma być połączeniem z istniejącym parkiem urządzeń produkcyjnych. Badany problem polegał na nietrafności i niestabilności sygnałów sensorów używanych w tej sieci. W celu rozwiązania problemu poddano analizie różne algorytmy możliwych rozwiązań. Wyniki i wnioski: Znaleziono możliwe rozwiązanie analizowanego problem poprzez określenie odpowiedniego algorytmu poprawiającego komunikację pomiędzy urządzeniami. W połączeniu z lokalizacją informacji przy zastosowania sieci beaconów oraz zorientowaniu informacji pochodzących z sensorów, można było zlokalizować urządzenie znajdujące się w pobliżu danego pracownika przy użyciu okularów Smart Glasses.

Źródło:

LogForum; 2018, 14, 1; 51-57
1734-459X

Pojawia się w:

LogForum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

Analysis of the transcriptome of Potentilla sericea under cadmium stress conditions

Autorzy:

Wu, J.
Fan, W.
Gao, P.
Yang, Q.
Zhang, J.
Wang, L.

Powiązania:

https://bibliotekanauki.pl/articles/2130579.pdf

Data publikacji:

2021

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

glutathione metabolism
sulfur metabolism

Opis:

Cadmium (Cd) stress significantly affects plant growth and development. Potentilla sericea is typically grown in gardens or as ground cover. In this study, the Cd response of P. sericea was analyzed based on physiological examinations and transcriptome analyses that uncovered the gene expression changes in P. sericea roots induced by a 7-day treatment with 90 μmol/L Cd2+. A total of 53,225 unigenes were identified, including 11,684 differentially expressed genes (DEGs; 8,083 upregulated and 3,601 downregulated). Additionally, 44 gene ontology terms and 127 Kyoto Encyclopedia of Genes and Genomes pathways were significantly enriched among these DEGs. Genes related to glutathione metabolism, plant hormone signal transduction, peroxisome processes, sulfur metabolism, and flavonoid biosynthesis pathways were confirmed as relevant to the Cd response of P. sericea. The molecular biology-related data described here may be useful for the future breeding of transgenic P. sericea plants with increased resistance to heavy metal stresses.

Źródło:

Acta Societatis Botanicorum Poloniae; 2020, 89, 4
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

The Research on Characterization of Crushability for Foundry Sand Particles

Autorzy:

Dai, Y.
Ma, Q. Y.
Li, X. H.
Zhang, X.
Hu, F. P.
Zhang, Y.
Xie, W. D.

Powiązania:

https://bibliotekanauki.pl/articles/379689.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

foundry sand particle
mechanical load
AFS grain fineness
crushability
piasek odlewniczy
obciążenie mechaniczne
rozdrobnienie ziarna

Opis:

In this paper, crushability of foundry sand particles was studied. Three kinds of in-service silica sands in foundry enterprises selected as the study object, and foundry sand particles were subjected to mechanical load and thermal load during service were analyzed. A set of methods for simulating mechanical load and thermal load by milling and thermal-cold cycling were designed and researched, which were used to characterize the crushability for silica sand particles, the microstructure was observed by SEM. According to the user’s experience in actual application, the crushability of Sand C was the best and then Sand B, the last Sand A. The results indicated that mechanical load, thermal load and thermal-mechanical load can all be used to characterize the crushability of foundry sand particles. Microscopic appearances can qualitatively characterize the crushability of foundry sand particles to a certain extent, combining with the additions and cracks which are observed on the surface.

Źródło:

Archives of Foundry Engineering; 2017, 17, 4; 231-235
1897-3310
2299-2944

Pojawia się w:

Archives of Foundry Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

Common mycelium networks with Paraglomus occultum induce better plant growth and signal substance changes between trifoliate orange seedlings

Autorzy:

Zhang, Y.-C.
Xie, M.-M.
Feng, H.-D.
Zhou, M.
Zhang, Z.Z.
Liu, C.-Y.
Wu, Q.-S.

Powiązania:

https://bibliotekanauki.pl/articles/11877054.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Opis:

Mycorrhizal mycelium can simultaneously colonize two and more neighboring plants to form common mycelium network (CMNs), whereas the information regarding CMN effects on endogenous signal substances is limited. In this study, a rootbox was separated by 37- or 0.45-μm mesh to establish donor chamber (the presence of roots and hyphae) and receptor (hyphae presented or not, free of roots) chamber, where an arbuscular mycorrhizal (AM) fungus Paraglomus occultum was inoculated into trifoliate orange seedlings of donor chamber to illustrate the underground communications of signal substances by CMNs. Mycorrhizal colonization resulted in better plant growth performance and greater root morphology in donor and receptor plants. AM inoculation increased significantly the root nitric oxide (NO) and calmodulin (CaM) levels of donor plants, regardless of 37- and 0.45-μm mesh, and subsequent CMNs induced higher root NO and CaM levels in receptor plants. Mycorrhizal colonization did not produce significant changes in root zeatin riboside (ZR) levels of donor plants, but CMN hyphae modulated lower root ZR levels of receptor plants. Mycorrhizal inoculation and subsequent CMN hyphae induced lower root gibberellin levels of donor and receptor plants, and only CMN hyphae produced lower root methyl jasmonate concentrations of receptor plants. Our results first reveal the underground communication of CaM, NO, and ZR by CMNs with P. occultum between trifoliate orange seedlings.

Źródło:

Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 6; 95-104
1644-0692

Pojawia się w:

Acta Scientiarum Polonorum. Hortorum Cultus

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Colloidal crystal cladded microfiber for refractive index sensing

Autorzy:

Yan, H. T.
Zhao, X Y
Zhang, Ch.
Zhen, Z Q
Li, Q Z
Cao, J X
Xia, L X

Powiązania:

https://bibliotekanauki.pl/articles/174902.pdf

Data publikacji:

2014

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

microfibers
colloidal crystals
refractive index sensing

Opis:

We investigate the evanescent field of a microfiber wrapped by colloidal crystals. The microfiber has the diameter of about 1 μm that is drawn from a single-mode fiber with an alcohol lamp. The colloidal spheres are further attached to the microfiber through thermal evaporation, then they self-assemble to crystal-like structures. The 400 nm, 590 nm, and 710 nm-diameter SiO2 colloidal spheres are used, respectively. The spectral responses are studied theoretically and experimentally, and the results agree with each other. It is revealed that the evanescent field of a microfiber could be modulated by the photonic band-gap of colloidal crystals. This characteristic is very useful in refractive index sensing for liquids.

Źródło:

Optica Applicata; 2014, 44, 2; 309-315
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Research on the Mechanism and Kinetics of Polymorphic Transitions of ε CL-20 in Composite Systems

Autorzy:

Guo, X.-Y.
Zhang, P.
Xu, J.-J.
Wang, Z.-H.
Jiao, Q.-J.

Powiązania:

https://bibliotekanauki.pl/articles/358032.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

polymorphic transition
kinetics
activation energy
transition temperature

Opis:

In order to explore the polymorphic transition law for ε-CL-20 in composite systems, the polymorphic transition process of pure ε-CL-20 crystals stimulated by heat was investigated by the X-ray Diffraction (XRD) method, and the kinetic parameters of the polymorphic transition process were calculated (including the apparent activation energy Ea and the pre-exponential factor lnA). Meanwhile the effects of different additives on the polymorphic transition process and kinetics of ε-CL-20 were explored in detail. The experimental results showed that the ε-form tends to transform into the γ- form on heating and that the Ea and lnA for the transition process were 209.97 kJ/mol and 57.47, respectively. The first group of additives clearly promoted the polymorphic transition of ε-CL-20 and lowered the initial transition temperature and the activation energy. The second and third groups of additives inhibited the polymorphic transition of ε-CL-20 and raised the initial transition temperature and the activation energy.

Źródło:

Central European Journal of Energetic Materials; 2015, 12, 4; 689-702
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Polarization properties of Gaussian–Schell model quantization field in a turbulent marine-atmosphere

Autorzy:

Zhao, Y.
Xia, M.
Wang, Q.
Li, Y.
Hu, Z.
Sun, H.
Zhang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/173639.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

polarization fluctuation
Gaussian–Schell model
marine-atmosphere
Kolmogorov turbulence

Opis:

Polarization properties of Gaussian–Schell model quantization field propagating through the Kolmogorov turbulence of a marine-atmosphere channel are studied based on the degree of quantum polarization. The effective photon annihilation and creation operators of Gaussian–Schell model quantization field propagation in a marine-atmosphere are developed by making use of the extended Huygens–Fresnel integral of quantum field. The effects of the outer scale on the degree of polarization can be neglected. As the source transverse coherent width, the number of received photons, the inner scale of turbulent eddies, and the source transverse radius decrease or the re- fractive index structure parameter increases, the degree of polarization decreases. In theory, we find that the polarization fade of marine-atmosphere turbulence channels is larger than that of terrene-atmosphere turbulence channels under same transport parameters and the channel with a stronger turbulence strength will possess a larger detection area of a polarization signal, which have potentially important implications for free-space quantum key distribution.

Źródło:

Optica Applicata; 2016, 46, 3; 335-345
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

Effects of Polymeric Binders on the RDX-based Explosive Response Character under Slow Cook-off Conditions

Autorzy:

Yan, X.
Li, X. D.
Zhang, Y. R.
Liu, L.
Zhang, X. M.
Tan, Y. X.
Wang, H.
Wang, X. Q.

Powiązania:

https://bibliotekanauki.pl/articles/358419.pdf

Data publikacji:

2018

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

RDX-based explosive
slow cook-off experiment
binder content
binder type

Opis:

Due to safety requirements, insensitive behaviour under slow thermal heating (cook-off) conditions is a desirable behaviour for today’s munitions. In this paper a cook-off device is designed to test two groups of RDX-based PBX explosives. In the first group the binder type was varied and in the second group the binder content of the RDX-based explosive was changed. Eleven samples were examined in order to evaluate the influence of four different binders and seven different binder contents on the shell deformation and the degree of the involved reaction. The test results showed that the degree of the reaction can be improved by changing the binder content, but not by the binder type. This phenomenon was explained by the thermal-conduction theory.

Źródło:

Central European Journal of Energetic Materials; 2018, 15, 2; 339-350
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

Estimation of phosphorus recovery by struvite crystallization from animal manure wastewater in China

Autorzy:

Fang, C.
Zhang, T.
Czechowska-Kosacka, A.
Pawlowski, A.
Łagód, G.
Jiang, R.
Wang, Q.

Powiązania:

https://bibliotekanauki.pl/articles/207381.pdf

Data publikacji:

2015

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

animal manure wastewater
phosphorus recovery
struvite
płynne odchody zwierzęce
odzysk fosforu
struwit

Opis:

Intensive farming is main industry which produces large amount of animal manure wastewater with high content of phosphorus. Its discharging to surface water leads to eutrophication. On the other hand, phosphorus is vital for plant growth and its natural reserves are rapidly exhausted. Therefore, recovering phosphorus from animal manure wastewater can achieve two important goals: prevention of eutrophication and recovery of non-renewable phosphorus compounds. The method of struvite precipitation has been presented for phosphorus recovery from animal manure wastewater. Based on scenario study, 8.76 million tons of struvite could be produced from animal manure wastewater in China.

Źródło:

Environment Protection Engineering; 2015, 41, 4; 195-207
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Prevalence of pathogenicity island ETT2 in Escherichia coli isolated from piglets with diarrhea in northeast of China

Autorzy:

Yuan, C.W.
Liu, W.X.
Hou, J.L.
Zhang, L.G.
Wang, G.Q.

Powiązania:

https://bibliotekanauki.pl/articles/2087783.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Escherichia coli
pathogenicity island
ETT2
piglets
diarrhea

Źródło:

Polish Journal of Veterinary Sciences; 2018, 21, 1; 5-12
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Molecular cloning and expression analysis of CML27 in Brassica oleracea pollination process

Autorzy:

Lian, X.P.
Zeng, J.
Zhang, H.C.
Yang, X.H.
Zhao, L.
Zhu, L.Q.

Powiązania:

https://bibliotekanauki.pl/articles/19583.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Źródło:

Acta Biologica Cracoviensia. Series Botanica; 2018, 60, 2
0001-5296

Pojawia się w:

Acta Biologica Cracoviensia. Series Botanica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Synthesis and Characterization of a High Energy Combustion Agent (BHN) and Its Effects on the Combustion Properties of Fuel Rich Solid Rocket Propellants

Autorzy:

Pang, W.-Q.
Zhao, F.-Q.
Xue, Y.-N.
Xu, H.-X.
Fan, X.-Z.
Xie, W.-X.
Zhang, W.
Lv, J.
Deluca, L. T.

Powiązania:

https://bibliotekanauki.pl/articles/358474.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

fuel rich solid propellant
BHN
DSC
TG-DTG
burning rate
combustion properties

Opis:

A high energy combustion agent (tetraethylammonium decahydrodecaborate, BHN) was prepared by means of an ion exchange reaction (IER), and the prepared samples were characterized by the advanced diagnostic techniques of Scanning Electron Microscopy (SEM), X-ray diffraction (XRD), Thermogravimetric Analysis (TGA), and Differential Scanning Calorimetry (DSC) etc. The effects of BHN particles on the hazard and combustion properties of fuel rich solid propellants were investigated. The results showed that the BHN samples and fuel rich propellants containing BHN particles can be prepared successfully and solidified safely. The peak temperature of thermal decomposition and the heat of decomposition of the BHN samples prepared were 305.8 °C and 210.9 J•g-1 at a heating rate of 10 K•min-1, respectively. The burning rate and pressure exponent of fuel rich solid propellants decreases with increases in the fraction of BHN particles in the propellant formulation. Compared with the reference formulation (sample BP-1), the burning rate of the propellant with 10% mass fraction of BHN particles (sample BP-4) had decreased 30% at 3.0 MPa, and the pressure exponent had dropped from 0.44 to 0.41.

Źródło:

Central European Journal of Energetic Materials; 2015, 12, 3; 537-552
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Development of a blocking immunoperoxidase monolayer assay for differentiation between pseudorabies virus-infected and vaccinated animals

Autorzy:

Wang, Y.B.
Li, Y.H.
Li, Q.M.
Xie, W.T.
Guo, C.L.
Guo, J.Q.
Deng, R.G.
Zhang, G.P.

Powiązania:

https://bibliotekanauki.pl/articles/2087396.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

pseudorabies virus variant strains
anti-pseudorabies virus monoclonal antibody
blocking immunoperoxidase monolayer assay
differentiation between pseudorabies virus-infected and vaccinated animals

Źródło:

Polish Journal of Veterinary Sciences; 2019, 4; 717-723
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Molecular cloning, bioinformation analysis and expression of the strictosidine synthase in Dendrobium officinale

Autorzy:

Zhu, Y.-F.
Fan, H.-H.
Li, D.-H.
Jin, Q.
Zhang, C.-M.
Zhu, L.-Q.
Song, C.
Cai, Y.-P.
Lin, Y.

Powiązania:

https://bibliotekanauki.pl/articles/12715947.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Opis:

The enzyme strictosidine synthase (STR, EC: 4.3.3.2) plays a key role in the biosynthetic pathway of terpenoid indole alkaloid (TIA). It catalyzes the condensation of the tryptamine and secologanin to form 3α(S)-strictosidine, which is the common precursor of all TIAs. In this paper, a STR gene designated as DoSTR (GenBank: KX068707) was first cloned and characterized from Dendrobium officinale with rapid amplified cDNA ends method (RACE). DoSTR has a length of 1380bp with 1179bp open reading frame encoding 392 amino acids. BlastP analyses showed that its amino acid sequence was classified into Str_synth superfamily. qRT-PCR showed that DoSTR was expressed in all tissues tested, with a significantly higher level in flower and the lowest in stem. Four different treatments with MeJA, SA, ABA and AgNO₃, respectively, could induce the DoSTR expression to a different extent. And the effect of MeJA was the most obvious and transcript level of DoSTR induced by MeJA was 20.7 times greater than that of control at 48 hours after treatment. Furthermore, it was found that DoSTR was localized in vacuole through transient expression in tobacco. The characterization and expression of DoSTR can help in further studying the role of DoSTR in the biosynthesis of TIAs in D. officinale. This study may throw light on the alkaloid biosynthesis pathway of D. officinale.

Źródło:

Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 3; 111-124
1644-0692

Pojawia się w:

Acta Scientiarum Polonorum. Hortorum Cultus

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

Morphology and developmental traits of the trilobite Changaspis elongata from the Cambrian Series 2 of Guizhou, South China

Autorzy:

Du, G.-Y.
Peng, J.
Wang, D.-Z.
Wang, Q.-J.
Wang, Y.-F.
Zhang, H.

Powiązania:

https://bibliotekanauki.pl/articles/22906.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

The morphology and ontogeny of the trilobite Changaspis elongata based on 216 specimens collected from the Lazizhai section of the Balang Formation (Stage 4, Series 2 of the Cambrian) in Guizhou Province, South China are described. The relatively continuous ontogenetic series reveals morphological changes, and shows that the species has seventeen thoracic segments in the holaspid period, instead of the sixteen as previously suggested. The development of the pygidial segments shows that their number gradually decreases during ontogeny. A new dataset of well-preserved specimens offers a unique opportunity to investigate developmental traits after segment addition is completed. The ontogenetic size progressions for the lengths of cephalon and trunk show overall compliance with Dyar’s rule. As a result of different average growth rates for the lengths of cephalon, trunk and pygidium, the length of the thorax relative to the body shows a gradually increasing trend; however, the cephalon and pygidium follow the opposite trend. Morphometric analysis across fourteen post-embryonic stages reveals growth gradients with increasing values for each thoracic segment from anterior to posterior. The reconstruction of the development traits shows visualization of the changes in relative growth and segmentation for the different body parts. The new dataset and growth gradient of the trunk suggest that the thoracic segment growth dynamics of early Cambrian to Silurian trilobites follow the same general continuous, steady-state growth gradient decreasing from posterior to anterior.

Źródło:

Acta Palaeontologica Polonica; 2019, 64, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Dark and singular optical solitons with competing nonlocal nonlinearities

Autorzy:

Zhou, Q.
Liu, L.
Zhang, H.
Mirzazadeh, M.
Bhrawy, A. H.
Zerrad, E.
Moshokoa, S.
Biswas, A.

Powiązania:

https://bibliotekanauki.pl/articles/949415.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

solitons
parabolic law nonlinearity
competing nonlinearities

Opis:

In this work, we study the dynamics of optical solitons in a synthetic nonlocal nonlinear media. The nonlinear dynamical model which describes the propagation of optical solitons in the weakly nonlocal nonlinear media with parabolic law nonlinearity is investigated analytically. The tool of integration that is the Riccati equation mapping approach is introduced to extract exact traveling wave solutions. As a result, an explicit dark soliton, singular soliton and periodic solutions are derived.

Źródło:

Optica Applicata; 2016, 46, 1; 79-86
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Optimal expression and purification of sapelovirus A structural protein VP1, and its immunogenicity in mice

Autorzy:

Zhao, T.T.
Cui, L.
Chen, L.
Li, J.J.
Liang, Q.L.
Wu, P.J.
Yu, X.Q.
Zhang, Z.H.
Hua, X.G.

Powiązania:

https://bibliotekanauki.pl/articles/2087686.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

sapelovirus A
prokaryotic expression
purification

Źródło:

Polish Journal of Veterinary Sciences; 2018, 21, 3; 573-579
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Synthesis, Structure and Energetic Properties of a Catenated N6, Polynitro Compound: 1,1’-Azobis(3,5-dinitropyrazole)

Autorzy:

Li, Y.-N.
Shu, Y.-J.
Wang, Y.-L.
Wang, B.-Z.
Zhang, S.-Y.
Bi, F.-Q.

Powiązania:

https://bibliotekanauki.pl/articles/358573.pdf

Data publikacji:

2017

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

energetic compound
1,1’-azobis(3,5-dinitropyrazole)
synthesis
energetic properties

Opis:

A nitrogen-rich, polynitro energetic compound with an N,N-azo linkage, 1,1’-azobis(3,5-dinitropyrazole) (ABDNP), has been synthesized by an oxidative coupling reaction of 1-amino-3,5-dinitropyrazole with different oxidizing agents. The target compound was characterized by IR spectroscopy, 1H and 13C nuclear magnetic resonance spectroscopy, elemental analysis, mass spectra, X-ray diffraction and differential scanning calorimetry (DSC). The DSC results show that 1,1’-azobis(3,5-dinitropyrazole) decomposes at a relatively high onset temperature (202.9 °C), which indicates that 1,1’-azobis(3,5-dinitropyrazole) has acceptable thermal stability. The energetic properties were obtained, with a measured density and heat of formation matched by theoretically computed values based on the B3LYP method.

Źródło:

Central European Journal of Energetic Materials; 2017, 14, 2; 321-335
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

A method for tracing exogenous DNA uptake in live spermatozoa and embryos

Autorzy:

Mu, Y.
Wang, J.
Liu, Z.
Zhao, Y.
Zhang, X.
Jiao, M.
Lv, J.
Hao, J.
Kong, Q.

Powiązania:

https://bibliotekanauki.pl/articles/2087751.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

spermatozoa
SMGT
exogenous DNA
IVF

Źródło:

Polish Journal of Veterinary Sciences; 2018, 21, 1; 193-202
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

The effect of polyacrylic acid on the surface properties of calcite and fluorite aiming at their selective flotation

Autorzy:

Zhang, C.
Gao, Z.
Hu, Y.
Sun, W.
Tang, H.
Yin, Z.
He, J.
Guan, Q.
Zhu, Y.

Powiązania:

https://bibliotekanauki.pl/articles/110577.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

calcite
fluorite
selective flotation
polyacrylic acid

Opis:

In this study, the polyacrylic acid (PAA) was studied as a selective depressant for calcite in the selective flotation of fluorite and calcite, and the implications of this process for the separation of fluorite ore were studied using micro-flotation tests, and the results were analyzed with Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses. The flotation tests indicated that the preferential adsorption of PAA onto calcite rather than sodium oleate (NaOl) could selectively depress the flotation of calcite, allowing its separation from fluorite at pH 7. The zeta potential of calcite became more negative with the addition of PAA rather than with NaOl. However, the characteristic features of PAA adsorption were not observed for fluorite, suggesting that NaOl preferentially adsorbed on the surface of fluorite, or that PAA could be replaced by NaOl on the fluorite surface. FT-IR and XPS analysis were utilized to obtain a better understanding of the mechanism by which PAA was more strongly adsorbed on the calcite surface than NaOl. This was revealed to occur through chemical bonding between the carboxyl group of PAA and the hydroxyl groups of the Ca species on the calcite surface, modifying the structure of the adsorbed layer. A possible adsorption mechanism, along with a postulated adsorption mode for the surface interaction between PAA and calcite, is proposed.

Źródło:

Physicochemical Problems of Mineral Processing; 2018, 54, 3; 868-877
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Ethnobotany of Acorus in China

Autorzy:

Shu, H.
Zhang, S.
Lei, Q.
Zhou, J.
Ji, Y.
Luo, B.
Hong, L.
Li, F.
Liu, B.
Long, C.

Powiązania:

https://bibliotekanauki.pl/articles/59160.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Botaniczne

Opis:

In China, species in the genus Acorus are used for many different purposes, viz., in traditional medicine, for rituals, and as ornamental plants. Acorus calamus (sweet flag) has been a symbolic plant in Chinese culture for many centuries and is used as a ceremonial object in festivals throughout the country. For other Acorus species in China, ethnobotanical records are few. During field investigations from 2006 to 2017, we interviewed 573 individuals representing ethnic groups such as the Miao, Yao, Buyi, Shui, Tujia, Dong, She, Maonan, Zhuang, Yi, and Han people. Various ethnobotanical approaches were adopted in the field surveys, including key informant interviews, semistructured interviews, participatory observation, direct observation, etc. The results have revealed a rich treasure trove of traditional knowledge on Acorus in China. Two species (A. macrospadiceus and A. gramineus) were used by ethnic groups as spices to add flavor to meat. Through the study found that all the species of Acorus had medicinal value, especially A. tatarinowii, deafness, blindness, and digestive disorders were among the conditions commonly treated using these plants. Traditional knowledge of the cultural, ethnomedicinal, and food values of Acorus, based on our recent literature surveys and field investigations in China is presented here. A better understanding of Acorus is vital for conserving the plants and the traditional knowledge associated with them.

Źródło:

Acta Societatis Botanicorum Poloniae; 2018, 87, 2
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

Identification of a linear epitope in the capsid protein of goose astrovirus with monoclonal antibody

Autorzy:

Dai, G.
Huang, X.
Liu, Q.
Li, Y.
Zhang, L.
Han, K.
Yang, J.
Liu, Y.
Xue, F.
Zhao, D.

Powiązania:

https://bibliotekanauki.pl/articles/16647377.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

epitope
goose astrovirus
capsid protein
monoclonal antibody

Opis:

Goose astrovirus (GoAstV) is a novel avastrovirus that typically causes gosling gout and results in 2 to 20% mortality. GoAstV capsid protein is the sole structural protein, which is responsible for viral attachment, assembly, maturation as well as eliciting host antibodies. However, the epitopes within capsid protein have not been well studied. In this study, a monoclonal antibody, named 1D7, was generated against GoAstV capsid protein by hybridoma technology. Western blot results showed that this MAb could react with recombinant capsid protein expressed in E. coli. Also, it recognized the precursor of capsid protein, VP90 and VP70, in GoAstV-infected cells. Besides, excellent specificity of MAb 1D7 was further demonstrated in indirect immunofluorescence assay and immunohistochemical analysis. Epitope mapping results revealed that MAb 1D7 recognized the epitope 33QKVY 36 within Cap protein. Sequence alignment indicated that 33QKVY 36 is a conserved epitope among the isolates of goose astrovirus type 2 (GoAstV-2), suggesting the potential for its use in GoAstV-2 specific diagnostic assay. These findings may provide some insight into a function of the GoAstV capsid protein and further contribute to the development of diagnostic methods for GoAstV infection.

Źródło:

Polish Journal of Veterinary Sciences; 2022, 25, 4; 579-587
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Identification of Ephedra species by phylogenetic analyses using matK and ITS1 sequences

Autorzy:

Zhao, Y.S.
Xie, L.X.
Mao, F.Y.
Cao, Z.
Wang, W.P.
Zhao, Q.P.
Zhang, X.H.

Powiązania:

https://bibliotekanauki.pl/articles/56673.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Botaniczne

Opis:

In this study, the species identifications of seven Ephedra plants, including three medicinal plants from the Pharmacopoeia of the People’s Republic of China, were conducted using phylogenetic analyses, and the method’s validity was verified. The phylogenetic trees constructed from the maturase-coding gene (matK) and internal transcribed spacer 1 (ITS1) sequences showed that the former could be used for identifying five Ephedra plants, Ephedra intermedia, E. equisetina, E. antisyphilitica, E. major, and E. aphylla, but it had less power to discriminate E. sinica and E. przewalskii, while the latter could distinguish five Ephedra plants, E. przewalskii, E. equisetina, E. antisyphilitica, E. major, and E. aphylla, but it had less power to discriminate E. sinica and E. intermedia. However, when the two genes were combined, the seven species could be completely distinguished from each other, especially the medicinal plants from the others, which is significant in developing their pharmaceutical uses and in performing quality control assessments of herbal medicines. The method presented here could be applied to the analysis of processed Ephedra plants and to the identification of the botanical origins of crude drugs. Additionally, we discovered that E. equisetina and E. major were probably closely related to each other, and that E. sinica, E. intermedia, and E. przewalskii also had a close genetic relationship.

Źródło:

Acta Societatis Botanicorum Poloniae; 2016, 85, 2
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 100.

Tytuł:

Antibacterial spectrum of four compounds from yeasts in koumiss

Autorzy:

Chen, Y.J.
Du, C.G.
Guo, Y.Q.
Zhao, Y.F.
Aorigele, C.
Wang, C.J.
Simujide, H.
Aqima, W.
Zhang, X.Y.

Powiązania:

https://bibliotekanauki.pl/articles/2087160.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Kluyveromyces marxianus
Saccharomyces cerevisiae
Escherichia coli
minimum inhibition concentration
minimum bactericidal concentration

Źródło:

Polish Journal of Veterinary Sciences; 2021, 24, 2; 167-173
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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