Skocz do pozycji: 1.

Tytuł:

Recovery of Pig Iron from Copper Smelting Slag by Reduction Smelting

Autorzy:

Erdenebold, U.
Choi, M.-H.
Wang, J.-P.

Powiązania:

https://bibliotekanauki.pl/articles/355067.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

copper slag
reduction
pig iron
fayalite
recovery

Opis:

Copper slag is a by-product obtained during smelting and refining of copper. Copper smelting slag typically contains about 1 wt.% copper and 40 wt.% iron depending upon the initial ore quality and the furnace type. Main components of copper slag are iron oxide and silica. These exist in copper slag mainly in the form of fayalite (2FeO ·SiO₂ ). This study was intended to recover pig iron from the copper smelting slag by reduction smelting method. At the reaction temperature of below 1400°С the whole copper smelting slag was not smelted, and some agglomerated, showing a mass in a sponge form. The recovery behavior of pig iron from copper smelting slag increases with increasing smelting temperature and duration. The recovery rate of pig iron varied greatly depending on the reaction temperature.

Źródło:

Archives of Metallurgy and Materials; 2018, 63, 4; 1793-1798
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Recovery Of Nickel From Spent Nickel-Cadmium Batteries Using A Direct Reduction Process
Odzysk niklu z zużytych baterii niklowo-kadmowych za pomocą bezpośredniej redukcji

Autorzy:

Shin, D. J.
Joo, S.-H.
Wang, J.-P.
Shin, S. M.

Powiązania:

https://bibliotekanauki.pl/articles/355948.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

spent nickel-cadmium batteries
direct reduction
recycling
heat treatment
zużyte baterie niklowo-kadmowe
redukcja bezpośrednia
recykling
obróbka cieplna

Opis:

Most nickel is produced as Ferro-Nickel through a smelting process from Ni-bearing ore. However, these days, there have been some problems in nickel production due to exhaustion and the low-grade of Ni-bearing ore. Moreover, the smelting process results in a large amount of wastewater, slag and environmental risk. Therefore, in this research, spent Ni-Cd batteries were used as a base material instead of Ni-bearing ore for the recovery of Fe-Ni alloy through a direct reduction process. Spent Ni-Cd batteries contain 24wt% Ni, 18.5wt% Cd, 12.1% C and 27.5wt% polymers such as KOH. For pre-treatment, Cd was vaporized at 1024K. In order to evaluate the reduction conditions of nickel oxide and iron oxide, pre-treated spent Ni-Cd batteries were experimented on under various temperatures, gas-atmospheres and crucible materials. By a series of process, alloys containing 75 wt% Ni and 20 wt% Fe were produced. From the results, the reduction mechanism of nickel oxide and iron oxide were investigated.

Źródło:

Archives of Metallurgy and Materials; 2015, 60, 2B; 1365-1370
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Recovery Of Electrodic Powder From Spent Lithium Ion Batteries (LIBs)
Odzysk proszku elektrodowego z zużytych akumulatorów litowo-jonowych

Autorzy:

Shin, S. M.
Jung, G. J.
Lee, W-J.
Kang, C. Y.
Wang, J. P.

Powiązania:

https://bibliotekanauki.pl/articles/354084.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

lithium ion battery
electrodic powder
cobalt
lithium
thermal treatment
bateria litowo-jonowa
proszek elektrodowy
kobalt
lit
obróbka termiczna

Opis:

This study was focused on recycling process newly proposed to recover electrodic powder enriched in cobalt (Co) and lithium (Li) from spent lithium ion battery. In addition, this new process was designed to prevent explosion of batteries during thermal treatment under inert atmosphere. Spent lithium ion batteries (LIBs) were heated over the range of 300°C to 600°C for 2 hours and each component was completely separated inside reactor after experiment. Electrodic powder was successfully recovered from bulk components containing several pieces of metals through sieving operation. The electrodic powder obtained was examined by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and atomic absorption spectroscopy (AA) and furthermore image of the powder was taken by scanning electron microscopy (SEM). It was finally found that cobalt and lithium were mainly recovered to about 49 wt.% and 4 wt.% in electrodic powder, respectively.

Źródło:

Archives of Metallurgy and Materials; 2015, 60, 2B; 1145-1149
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Recovery Of Electrodic Powder From Spent Nickel-Metal Hydride Batteries (NiMH)
Odzyskiwanie proszku elektrodowego ze zużytych akumulatorów niklowo-wodorkowych (NiMH)

Autorzy:

Shin, S. M.
Shin, D. J.
Jung, G. J.
Kim, Y. H.
Wang, J. P.

Powiązania:

https://bibliotekanauki.pl/articles/356110.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

nickel-metal hybride (NiMH)
electrodic powder
nickel
rare earth elements (REE)
thermal treatment
akumulator niklowo-wodorkowy
proszek elektrodowy
nikiel
pierwiastki ziem rzadkich
obróbka termiczna

Opis:

This study was focused on recycling process newly proposed to recover electrodic powder enriched in nickel (Ni) and rare earth elements (La and Ce) from spent nickel-metal hydride batteries (NiMH). In addition, this new process was designed to prevent explosion of batteries during thermal treatment under inert atmosphere. Spent nickel metal hydride batteries were heated over range of 300°C to 600°C for 2 hours and each component was completely separated inside reactor after experiment. Electrodic powder was successfully recovered from bulk components containing several pieces of metals through sieving operation. The electrodic powder obtained was examined by X-ray diffraction (XRD) and energy dispersive X-ray spectroscopy (EDX) and image of the powder was taken by scanning electron microscopy (SEM). It was finally found that nickel and rare earth elements were mainly recovered to about 45 wt.% and 12 wt.% in electrodic powder, respectively.

Źródło:

Archives of Metallurgy and Materials; 2015, 60, 2B; 1139-1143
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

A Study On The Fabrication Of Iron Powder From Forging Scale Using Hydrogen
Próby wytwarzanie proszku żelaza metodą redukcji zgorzeliny pochodzącej z procesów kucia za pomocą wodoru

Autorzy:

Shin, S. M.
Lee, D.-W.
Yun, J.-Y.
Kang, Ch.-Y.
Wang, J.-P.

Powiązania:

https://bibliotekanauki.pl/articles/350946.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

forging scale
hydrogen partial pressure
hematite
iron powder
kucie za pomocą wodoru
hematyt
redukcja zgorzeliny
proszek żelaza

Opis:

This study was conducted to investigate the effect of hydrogen content, temperature, reaction time for the reduction of forging scale which is mainly composed of hematite (Fe₂O₃). All reductive reactions were performed over the temperature range of 700 to 1200°C as well as 0.1 to 1 atm of hydrogen partial pressures. The results showed that the mechanism for the reduction of iron oxides using hydrogen gas was not a simple process, but proceeded in multiple reduction stages thermodynamically. The iron oxide was almost completely reduced to metallic iron powder with 91 wt.% of iron content in the forging scale at 0.1 atm of hydrogen partial pressure. The content of iron was however found to be increased with increasing hydrogen partial pressure from 0.1 to 1 atm with regardless of temperatures. The metallic iron powder was obtained with the mean size of 100 μm and more porous structure was observed.

Źródło:

Archives of Metallurgy and Materials; 2015, 60, 2B; 1547-1549
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Influence of upper extremity position on EMG signal measures calculated in time, frequency and time-frequency domains

Autorzy:

Wang, J.
Bartuzi, P.
Roman-Liu, D.

Powiązania:

https://bibliotekanauki.pl/articles/306619.pdf

Data publikacji:

2013

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

upper extremity
EMG
position
time-frequency domain
postawa ciała
biomechanika

Opis:

The aim of this study was to investigate the relationship between time-frequency, time and frequency measures when considering various upper extremity positions below the level of the shoulder and in trapezius as well as deltoideus muscles. During the experiment, 15 subjects performed a task that involved screwing and unscrewing a screw cap on a board in six different locations, i.e., there were six upper extremity positions. Variables were calculated in the time, frequency and time-frequency domains on a recorded EMG signal. The results showed that parameters analyzed in the time-frequency domain were more sensitive to changes in position than parameters analyzed in the frequency domain.

Źródło:

Acta of Bioengineering and Biomechanics; 2013, 15, 4; 83-91
1509-409X
2450-6303

Pojawia się w:

Acta of Bioengineering and Biomechanics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Using a new hybrid rootstock significantly increases the grafted plant rate and watermelon yield

Autorzy:

Zhang, J.
Wang, P.
Tian, H.
Wang, Y.
Jiang, H.

Powiązania:

https://bibliotekanauki.pl/articles/26471.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Źródło:

International Agrophysics; 2019, 33, 1
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Theoretical analytical solution of deformation and stress distribution of underground gas storage cavern in bedded salt rock

Autorzy:

Xie, P.
Wen, H. J.
Wang, G. J.
Hu, J.

Powiązania:

https://bibliotekanauki.pl/articles/230968.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

złoża soli kamiennej
analiza teoretyczna
funkcja wypierania Love'a
zasada zgodności sprężysto-lepkosprężystej
różnica skończona trójwymiarowa wyraźna
bedded salt rock
theoretical analysis
Love displacement function
elastic-viscoelastic correspondence principle
three-dimensional explicit finite-difference

Opis:

The main purpose of the study is to investigate the mechanical properties around an underground gas storage cavern in bedded salt rock. Firstly, considering the characteristics of the salt rock formation in China, the mechanical model was simplified into a hollow cylinder, which containing non-salt interlayer. In terms of elastic theory, Love displacement function was developed, and the elastic general solution of stress and deformation components were obtained after determining the undetermined coefficients. Under the same condition, numerical simulation was carried out. The validity of the elastic general solution is verified by comparing to numerical simulation results. Furthermore, Based on the feasible general elastic solution, viscoelastic solution was obtained through Laplace transformation and inverse Laplace transform, which could provide reference for the study on the stability and tightness of underground gas storage carven during operation to some extent.

Źródło:

Archives of Civil Engineering; 2018, 64, 4/I; 37-53
1230-2945

Pojawia się w:

Archives of Civil Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Renewable warranty policy for multiple-failure-mode product considering different maintenance options
Polityka odnawiania gwarancji dla produktówo mnogich przyczynach uszkodzeń uwzględniająca różne opcje obsługi

Autorzy:

Li, X.
Jia, Y.
Wang, P.
Zhao, J.

Powiązania:

https://bibliotekanauki.pl/articles/301949.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

multiple failure modes
renewing warranty
preventive maintenance
warranty cost
product availability
upgrading maintenance
mnogie przyczyny uszkodzeń
odnowienie gwarancji
obsługa profilaktyczna
koszty gwarancji
gotowość produktu
konserwacja modernizacyjna

Opis:

Along with the advancement of manufacturing techniques, the quality of the spares for product is likely to be improved during the warranty period. There can be two types of spares, i.e. low-quality spares and high-quality spares for replacement maintenance. And the manufacturers (customers) may have to decide whether or not to provide (buy) the warranty considering upgrading maintenance. This paper presents a renewing warranty policy considering three maintenance options for products with multiple failure modes. The cost and availability models of these maintenance options are proposed. Of these options, upgrading maintenance is taken into account with the assumption that the warrantied item will be upgraded one time during the warranty cycle. After upgrading maintenance, the high-quality spares are used to replace the failed item. By minimizing the ratio between cost and availability of the product, the optimal upgrading opportunity is obtained. In the numerical example, the results of these options are presented. Monte Carlo simulation results are compared with the analytical results to demonstrate the correctness and efficiency of the proposed models considering upgrading maintenance. The renewing warranty policy considering upgrading maintenance policy is compared with the one without considering upgrading maintenance. The results show that the former is better than the latter in some cases. The sensitivity of the cost model and availability model to different parameters is analyzed at last.
Wraz z postępem techniki produkcji, wzrasta prawdopodobieństwo, że jakość części zamiennych do produktu ulegnie poprawie w przeciągu okresu gwarancyjnego. Istnieją dwa rodzaje części zamiennych: części zamienne niskiej i wysokiej jakości. Producenci (klienci) mogą być zmuszeni podjąć decyzję czy objąć produkt gwarancją (wykupić gwarancję) zapewniającą konserwację modernizacyjną. W artykule przedstawiono politykę odnawiania gwarancji z uwzględnieniem trzech różnych opcji obsługi produktów narażonych na mnogie przyczyny uszkodzeń. Zaproponowano modele kosztów i gotowości dla omawianych opcji obsługi. Spośród badanych opcji, do dalszej analizy wybrano konserwację modernizacyjną zakładającą, że element podlegający gwarancji zostanie poddany jednokrotnej modernizacji podczas cyklu gwarancyjnego. Po wykonaniu konserwacji modernizacyjnej, uszkodzony element zastępuje się częściami zamiennymi wysokiej jakości. Minimalizując stosunek kosztów do gotowości produktu, uzyskuje się optymalną możliwość modernizacji Przykład numeryczny przedstawia wyniki uzyskane dla omawianych opcji. Wyniki symulacji Monte Carlo porównano z wynikami analitycznymi w celu wykazania prawidłowości i efektywności proponowanych modeli uwzględniających konserwację modernizacyjną. Politykę odnawiania gwarancji uwzględniającą konserwację modernizacyjną porównano z polityką, która takiej konserwacji nie uwzględnia. Wyniki pokazują, że pierwsza z tych opcji jest w niektórych przypadkach korzystniejsza od drugiej. Badania wieńczy analiza czułości modelu kosztów i modelu gotowości na różne parametry.

Źródło:

Eksploatacja i Niezawodność; 2015, 17, 4; 551-560
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Structural and Optical Properties of ZnO Nanowires Doped with Magnesium

Autorzy:

Zhuang, H.
Wang, J.
Liu, H.
Li, J.
Xu, P.

Powiązania:

https://bibliotekanauki.pl/articles/1505046.pdf

Data publikacji:

2011-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

61.46.Km
61.72.uj
81.15.Gh
78.67.-n

Opis:

ZnO nanowires doped with Mg have been successfully prepared on Au-coated Si (111) substrates using chemical vapor deposition method with a mixture of ZnO, Mg, and activated carbon powders as reactants at 850°C. The structural, compositional, morphological and optical properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, and photoluminescence spectroscopy. The nanowires are single crystalline in nature and preferentially grow up along [0001] direction with the average diameter and length of about 60 nm and several hundred micrometers, respectively, thinner and longer than the results of literature using the similar method. Room temperature photoluminescence spectroscopy shows a blueshift from the bulk band gap emission, which can be attributed to Mg doping that were detected by energy dispersive X-ray analysis EDX in the nanowires. Finally, the possible growth mechanism of crystalline ZnO nanowires is discussed briefly.

Źródło:

Acta Physica Polonica A; 2011, 119, 6; 819-823
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Parameter calibration for the discrete element simulation model of commercial organic fertilizer

Autorzy:

Xie, C.
Yang, J.
Wang, B.
Zhuo, P.
Li, C.
Wang, L.

Powiązania:

https://bibliotekanauki.pl/articles/2082983.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

commercial organic fertilizer
discrete element
repose angle
parameter calibration
parameters for the particle
model

Opis:

The parameters of a discrete element simulation model for commercial organic fertilizer particles were obtained both quickly and accurately, so that the uniformity and stability of the fertilizer discharged from the feeder may be studied using the discrete element simulation method. This study screened out the parameters which significantly influenced the repose angle of the commercial organic fertilizer using the Plackett-Burman test. Then, a model for the quadratic regression response surface of the repose angle vs the parameters was established through a Box-Behnken experiment with the measured repose angle of the fertilizer particles as the optimization index. The optimization results showed that the rolling friction coefficient and static friction coefficient between the fertilizer particles, as well as the optimal simulation parameter for the Johnson-Kendall-Roberts surface energy were 0.056, 0.355 and 0.011 J m-2, respectively. A discrete element simulation test was carried out with the optimal simulation parameters, and the repose angle error of the simulation test was found to be 0.40% relative to that of the physical test, which proved the accuracy and validity of the simulation parameters for the discrete element model of the organic fertilizer. The simulation results may provide the basic parameters for establishing a discrete element model of commercial organic fertilizer particles and investigating the performance of organic fertilizer feeders using the simulation method.

Źródło:

International Agrophysics; 2021, 35, 1; 107-117
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Seismic damage behaviour of aeolian sand reinforced concrete columns with I-shaped structural steel

Autorzy:

Wang, Y. H.
Wang, H. Y.
Wang, Y. P.
Zhao, M.
Qi, J.
Huo, G. Z.
Liu, P. Q.

Powiązania:

https://bibliotekanauki.pl/articles/1849772.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

piasek eoliczny
słup żelbetowy
stal konstrukcyjna
przekrój I
zachowanie
uszkodzenie sejsmiczne
model uszkodzenia
aeolian sand
column
I-shaped steel
structural steel
seismic damage
behaviour
damage model

Opis:

To promote the application of aeolian sand resources for steel-concrete composite structures, an aeolian sand reinforced concrete column with I-shaped structural steel is proposed in this study. Four specimens are designed and manufactured with different replacement rates of aeolian sand. The seismic behaviour and damage evolution process of the specimens are studied by low-cycle repeated loading tests. Based on the test results, the mechanical characteristics, failure modes, hysteresis curves, skeleton curves, energy dissipation capacity, displacement ductility, and stiffness degradation of the specimens with different replacement rates of aeolian sand are analysed. In addition, the effects of the design parameters on the seismic behaviour of the specimens are also studied. The results show that the indexes of the seismic behaviour can be significantly improved by adding steel. Moreover, a revised damage model is proposed, to better reflect the evolution law of seismic damage of aeolian sand reinforced concrete columns with steel. The proposed model can provide an important reference for seismic damage assessment of the columns.

Źródło:

Archives of Civil Engineering; 2020, 66, 4; 633-650
1230-2945

Pojawia się w:

Archives of Civil Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

A polarization filter at 1550 nm based on photonic crystal fiber with symmetry around gold-coated holes

Autorzy:

Zha, F.
Li, J.
Sun, P.
Wang, X.

Powiązania:

https://bibliotekanauki.pl/articles/173897.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

photonic crystal fiber
polarization filter
finite element method
surface plasmon resonance

Opis:

A polarization photonic crystal fiber based on surface plasmon resonance is proposed in this paper. The photonic crystal fiber with gold coated holes is studied through using the finite element method. The impacts of structural parameters on the resonance characteristics are discussed. Numerical simulations show that the resonance wavelength can be modulated by changing the parameters of the air holes and thickness of gold layer. At the resonance wavelength 1550 nm, the loss is 3.8045 dB/m in x-polarization and the loss is 28464 dB/m in y-polarization by adjusting the size of the gold-coated holes and the place of air holes. Results show that the loss of y-polarized mode is much larger than the loss of x-polarized mode. The y-polarized mode is suppressed, and only x-polarized mode can be guided at the resonance wavelength of y-polarized mode. The results indicate that the mode polarized in one direction can be filtered out selectively by adjusting the diameter of air holes, and the filtering effect in a communication band is achieved.

Źródło:

Optica Applicata; 2018, 48, 4; 609-620
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

High Pressure Far-Infrared Magnetooptical Studies of Sn and S Donors in GaAs

Autorzy:

Dmochowski, J. E.
Wang, P. D.
Stradling, R. A.

Powiązania:

https://bibliotekanauki.pl/articles/1888152.pdf

Data publikacji:

1991-08

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

71.55.Eq
78.50.Ge

Opis:

The diamond anvil cell technique is applied for magneto-optical far-infrared transmission experiments with LPE grown GaAs:Sn. The 1s-2p(+) intra-shallow-Γ-donor transition is investigated as a function of high hydrostatic pressure for Sn and residual S donors. Both donors are shallow up to 30 kbar. Above this pressure both donors become deep and shallow donor absorption is persistently bleached due to deep non-metastable (non DX-like) states of the donors entering the gap of GaAs.

Źródło:

Acta Physica Polonica A; 1991, 80, 2; 279-282
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Analysis of field tension infiltrometer data by parameter estimation

Autorzy:

Simunek, J.
Wang, Dong
Shouse, P.J.
Van Genuchten, M.T.

Powiązania:

https://bibliotekanauki.pl/articles/26040.pdf

Data publikacji:

1998

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

field tension
Wooding's analysis
tension disc infiltrometer
hydraulic property
soil property
parameter estimation

Źródło:

International Agrophysics; 1998, 12, 3
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Development of a 20 kJ Sparker for High Resolution Ocean Seismic Survey

Autorzy:

Sun, Y.
Gao, Y.
Yan, P.
Wang, J.
Yuan, W.
Wu, H.
Wang, Y.
Wan, P.
Zhao, G.

Powiązania:

https://bibliotekanauki.pl/articles/1807914.pdf

Data publikacji:

2009-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

52.80.Wq
43.30.+m

Opis:

An ocean sparker with a stored energy of 20 kJ was developed for high resolution ocean seismic survey. The sparker is mainly composed of a high voltage high frequency charging supply, energy storage capacitors, a discharging switch and discharging electrodes. The H-bridge inverter and series resonant mode were adopted in the charging supply, and a dry high voltage transformer was used to improve the safety and maintenance, the average charging rate exceeded 4 kJ/s. An optical fiber connected between the high voltage system and the control system was used to isolate high voltage and transmit the high voltage signal. The high voltage electrodes of the discharging electrodes consisted of several hundreds of electrodes. The experimental results show that the sparker can be operated at repetition rates of 12 shots/min, and can meet the expected design requirements. Further field tests will be done in the near future.

Źródło:

Acta Physica Polonica A; 2009, 115, 6; 1059-1061
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Enzymatic Polishing and Reactive Dyeing of Cotton Fabric in One Bath
Enzymatyczne polerowanie i reaktywne barwienie bawełnianych tkanin w systemie stosowania jednej kąpieli

Autorzy:

Wang, P.
Hong, Y.
Ding, Y.
Cui, L.
Yuan, J.
Wang, Q.
Fan, X.

Powiązania:

https://bibliotekanauki.pl/articles/232210.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych

Tematy:

cotton fabric
neutral cellulase
reactive dye
one-bath method
colour strength
tkanina bawełniana
celulaza
reaktywne barwienie
metoda jednej kąpieli
siła koloru

Opis:

Cellulase has the ability to remove fuzz-fibres from cellulosic textiles, which endows fabric with a glabrous appearance and soft handle. In this paper, the combined uses of bio-polishing and reactive dyeing in one bath were carried out, aiming at shortening the treatment time and reducing the overall consumption of water and energy as well. The properties of cotton fabrics before and after the combined treatments were investigated, including the colour strength, colour fastnesses and tearing strength. The results indicated that the colour fixing agent of soda had noticeable inhibiting effects on cellulase activity. Meanwhile reactive dyes might react with cellulase proteins under alkaline conditions, resulting in decelerating influences on the dye-fibre covalent reactions. The acceptable one-bath process consisted of bio-polishing and dyeing of cotton in neutral solution, followed by dye fixation under alkaline conditions. Compared to polishing and dyeing in two baths, the one-bath method endowed fabric with a bit lower colour strength.
Celulaza ma zdolność do usuwania włosków zmechacenia z tekstyliów celulozowych, co pozwala na osiągnięcie gładkiej powierzchni o delikatnym chwycie. W pracy badano sumaryczny efekt biopolerowania i reaktywnego barwienia przeprowadzanych w jednej kąpieli. Metoda ta ma na celu skrócenie czasu obróbki i zredukowanie ogólnego zapotrzebowania na wodę i energię. Badano właściwości tkanin bawełnianych przed i po obróbce. Między innymi badano nasycenie kolorem, trwałość koloru i wytrzymałość na rozrywanie. Wyniki wskazują, że soda jako środek utrwalający kolor ma zauważalny wpływ na hamowanie działania celulazy. Porównując metodę równoczesnego polerowania i barwienia z metodą, gdzie obydwie obróbki stosowane są indywidualnie stwierdzono, że w metodzie równoczesnej obróbki uzyskuje się nieco niższe nasycenie koloru.

Źródło:

Fibres & Textiles in Eastern Europe; 2015, 1 (109); 109-113
1230-3666
2300-7354

Pojawia się w:

Fibres & Textiles in Eastern Europe

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Hierarchy of plasticity traits in responses of Quercus aliena to light conditions and water availability

Autorzy:

Xu, N.
Wang, R.
Liu, J.
Lu, P.
Guo, W.

Powiązania:

https://bibliotekanauki.pl/articles/41404.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Opis:

This study aimed to investigate plasticity of different plant traits to varied light and water availability. A greenhouse experiment was conducted with Quercus aliena seedlings with two light and four soil water levels. Plant traits related to leaf physiology, morphology, anatomy, and biomass production were determined. The results showed that plant size had significant effects on leaf area, leaf number, shoot height, basal diameter and crown area. After excluding the influence of plant size, water treatment had stronger effects on plants compared to light levels, and their interaction effect was significant. The limited water supply significantly inhibited leaf photosynthetic rate and the fluorescence efficiency under high light. However, leaves submitted to moderate drought stress showed enhanced fluorescence activity under shade condition. Grand plasticity of leaf physiology and growth was the highest, followed by biomass allocation and leaf morphology, and lastly anatomy, and this ranking did not change as resources considered. Among the variables, leaf petiole length, chlorophyll content and leaf area could be selected as candidates for estimation of species’ plasticity to water, light and their interaction, respectively. Therefore, our results suggested that there was a hierarchy existing among traits plasticity in Q. aliena, and supported the aboveground facilitation hypothesis that shade could alleviate the adverse effect of drought.

Źródło:

Dendrobiology; 2015, 74
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

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: 20.

Tytuł:

Fruit biomechanics based on anatomy: a review

Autorzy:

Li, Z.
Yang, H.
Li, P.
Liu, J.
Wang, J.
Xu, Y.

Powiązania:

https://bibliotekanauki.pl/articles/24093.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Opis:

Fruit biomechanics is needed for quality determination, multiscale modelling and engineering design of fruit processes and equipments. However, these determined fruit biomechanics data often have obvious differences for the same fruit or tissue. In order to investigate it, the fruit biomechanics based on anatomy was reviewed in this paper. First, the anatomical characteristics of fruit biomaterials were described at the macroscopic ‘tissue’ level and microscopic ‘cellular’ level. Subsequently, the factors affecting fruit biomechanics based on anatomy and the relationships between fruit biomechanics, texture and mechanical damage were summarised according to the published literature. Fruit biomechanics is mainly affected by size, number and arrangement of cells, quantity and volume of intracellular spaces, structure, thickness, chemical composition and permeability of cell walls, and pectin degradation level and turgor pressure within cells based on microanatomy. Four test methods and partial determined results of fruit biomechanics were listed and reviewed. The determined mechanical properties data of fruit are only approximate values by using the existing four test methods, owing to the fruit biomaterials being non-homogeneous and living. Lastly, further aspects for research on fruit biomechanics were proposed for the future.

Źródło:

International Agrophysics; 2013, 27, 1
0236-8722

Pojawia się w:

International Agrophysics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

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: 22.

Tytuł:

Ionic [Ru] complex with recyclability by electro-adsorption for efficient catalytic transfer hydrogenation of aryl ketones

Autorzy:

Yue, C. J.
Xue, Q. N.
Gu, L. P.
Wang, J. F.

Powiązania:

https://bibliotekanauki.pl/articles/778543.pdf

Data publikacji:

2017

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

ionic Ru complex
transfer hydrogenation
electron-adsorption
catalyst recovery

Opis:

The efficient reuse of homogeneous catalyst is important. Cation complex of [Ru(η⁶ -p-cymene)(PPh₃ )(CH₃ CN) Cl]PF₆  with different ligands was synthesized and characterized by infrared spectroscopy (IR), ¹ H-, ¹³ C- and ³¹ P-nuclear magnetic resonance spectroscopy (¹ H-, ¹ 3C- and ³¹ P-NMR), element analysis (EA), and high resolution mass spectrometry (HR-MS). The complex was used as a catalyst for the hydrogen transfer reduction of carbonyl for the first time, presenting an excellent catalytic performance of 89%–98% conversion of acetophenone and its derivatives. The catalyst may be efficiently reused by the electro-adsorption of 10 times to one catalyst recovery. The cation [Ru] complex presented advantages of both homogeneous and heterogeneous catalysts.

Źródło:

Polish Journal of Chemical Technology; 2017, 19, 4; 75-79
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Using chemometrics to identify water quality in Daya Bay, China

Autorzy:

Wu, M.-L.
Wang, Y.-S.
Sun, C.-C.
Wang, H.
Lou, Z.-P.
Dong, J.-D.

Powiązania:

https://bibliotekanauki.pl/articles/49096.pdf

Data publikacji:

2009

Wydawca:

Polska Akademia Nauk. Instytut Oceanologii PAN

Tematy:

robust principal component analysis
water quality
chemometrics
China
cluster analysis
Daya Bay

Opis:

In this paper, chemometric approaches based on cluster analysis, classical and robust principal component analysis were employed to identify water quality in Daya Bay (DYB), China. The results show that these approaches divided water quality in DYB into two groups: stations S3, S8, S10 and S11 belong to cluster A, which lie in Dapeng Cove, Aotou Harbor and the north-eastern part of DYB, where water quality is related mainly to anthropogenic activities. The other stations belong to cluster B, which lie in the southern, central and eastern parts of DYB, where the quality is related mainly to water exchange with the South China Sea. Cluster analysis yields good results as a first exploratory method for evaluating spatial difference, but it fails to demonstrate the relationship between variables and environmental quality on the one hand and the untreated data on the other. However, with the aid of suitable chemometric approaches, the relationship between samples or variables can be investigated. Classical and robust principal component analysis can provide a visual aid for identifying the water environment in DYB, and then extracting specific information about relationships between variables and spatial variation trends in water quality.

Źródło:

Oceanologia; 2009, 51, 2; 217-232
0078-3234

Pojawia się w:

Oceanologia

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

A euenantiornithine bird from the Late Cretaceous Hateg Basin of Romania

Autorzy:

Wang, X.
Dyke, G.J.
Codrea, V.
Godefroit, P.
Smith, T.

Powiązania:

https://bibliotekanauki.pl/articles/21454.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Instytut Paleobiologii PAN

Opis:

We present the first record of a euenantiornithine bird from Romania. A small collection of fossil remains from the Maastrichtian add to the known distribution of large euenantiornithines and descriptions of birds from the Haţeg Basin augment the known vertebrate fauna from this famous region of Transylvania. The new specimens referred here to an indeterminate taxon of euenantiornithine further demonstrate that the larger members of this diverse Cretaceous lineage were globally distributed, as many birds are today.

Źródło:

Acta Palaeontologica Polonica; 2011, 56, 4
0567-7920

Pojawia się w:

Acta Palaeontologica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

The environment and the utilization the status of the subsidence area in the Xu Zhou, Yan Zhou and Huainan and Huaibei region of China
Osiadanie terenu i jego wpływ na środowisko w chińskich regionach Xu Zhou, Yan Zhou oraz Huainan i Huaibei

Autorzy:

Fan, T. G.
Yan, J. P.
Wang, S.
Ruan, S. X.

Powiązania:

https://bibliotekanauki.pl/articles/348809.pdf

Data publikacji:

2012

Wydawca:

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

Tematy:

obniżenie poziomu wód
stan zasobów wodnych
utylizacja
coal mine subsidence waters
water resources status
utilization

Opis:

The main coal mining subsidence area of the Xu Zhou, Yan Zhou, Huaihe collapsed state region were investigated including the environment state, water surface area, pollution source, and the utilization state. Some advice wasproposed to protect the environment of the subsidence area.
Badaniem objęto główną strefę osiadania w stanie całkowitego zawału w chińskich regionach Xu Zhou, Yan Zhou i Huaihe, w tym stan otoczenia, wody powierzchniowe, źródła zanieczyszczenia oraz utylizację. Zaproponowano kilka rozwiązań dla ochrony środowiska strefy osiadania.

Źródło:

AGH Journal of Mining and Geoengineering; 2012, 36, 3; 127-133
1732-6702

Pojawia się w:

AGH Journal of Mining and Geoengineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Characteristics of Magnetic Core in Magnetic Pulse Compression System

Autorzy:

Zhang, D.
Yan, P.
Sun, Y.
Wang, J.
Zhou, Y.
Pan, R.

Powiązania:

https://bibliotekanauki.pl/articles/1807880.pdf

Data publikacji:

2009-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

07.05.Tp
42.65.Re
75.60.Ej

Opis:

In order to obtain the characteristics of magnetic core under ≈0.5-5 μs saturation time, a one-stage magnetic pulse compression circuit without external demagnetization circuits which are commonly used in magnetic compressors is designed. The current through the core is calculated by voltage across the resistive load, and the loop voltage is picked up with a single wire loop and integrated by software. B-H curves are derived from the measured voltage and current wave forms. B-H curves show that the core loss is in inverse proportion to the time to saturation, whereas the percentile core loss decreases as the charging energy increases. While the eddy current loss and dissipated energy are in direct proportion to dB/dt. The low inductance of magnetic switch indicates that the core is saturated and behaves as an air core. By applying custom characteristics to each stage in Pspice simulation, more practical energy transfer in magnetic pulse compression and the effects of leakage current are presented.

Źródło:

Acta Physica Polonica A; 2009, 115, 6; 1001-1003
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Synchronization Study and Introductory Experiment οf Laser-Triggered Surface Flashover in Voltage Pulse

Autorzy:

Pan, R.
Wang, J.
Sun, Y.
Sun, G.
Yan, P.
Zhang, D.

Powiązania:

https://bibliotekanauki.pl/articles/1807974.pdf

Data publikacji:

2009-06

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

52.80.-s
51.50.+v

Opis:

With the aim of studying the characteristics of laser-triggered surface flashover in voltage pulse, synchronization problem of laser pulse and voltage pulse should be solved. A single/double harmonic, with wavelength λ of 1064/532 nm, Q-switched Nd:YAG laser is used to trigger the surface flashover. The synchronization problem is solved using a self-made digital delay/pulse generator. The delay time and jitter of Marx's trigger input and output, Marx's trigger output and Marx's output, laser input and output are respectively measured. Based on the result of the delay time and the timing sequence of the laser triggering system, the synchronization of laser pulse and voltage pulse is obtained through adjusting the channel delay time of digital delay/pulse generator. In addition, introductory experiment of laser-triggered surface flashover is carried out using the flat electrodes and columned insulators.

Źródło:

Acta Physica Polonica A; 2009, 115, 6; 1167-1169
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:

Adsorption efficiency of pentafluorobenzene on ionic liquids-based silicas

Autorzy:

Wang, X.
Lin, L.
Xie, J.
Yan, X.
Xiao, W.
Tian, P.

Powiązania:

https://bibliotekanauki.pl/articles/778559.pdf

Data publikacji:

2018

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

ionic liquids based silica
pentafl uorobenzene
adsorption
solid-phase extraction

Opis:

The adsorption of pentafl uorobenzene on nine ionic liquid-based silicas was investigated using solid phase extraction. The effects of several variables such as the type of ionic liquid groups, adsorption time, temperatures and water ratio in the solution system were experimentally evaluated. The imidazole-chloride ionic liquid group based silica exhibited the highest adsorption efficiency under the optimized conditions of 5 min adsorption at 30°C in water/methanol (30:70, vol%) solution. In addition, the effects of pH, as well as type and concentrations of chloride salts were investigated. At pH values other than neutral and high salt concentration, the adsorption efficiency was reduced. Finally, the relative standard deviation of less than 5.8% over a 5-day period showed a high precision for the nine tested sorbents.

Źródło:

Polish Journal of Chemical Technology; 2018, 20, 3; 47-52
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Generation of chirped microwave signal with any central frequency based on a nonuniformly spaced finite impulse response filter

Autorzy:

Chen, D.
Wang, R.
Pu, T.
Xiang, P.
Fang, T.
Zheng, J.
Xiong, J.

Powiązania:

https://bibliotekanauki.pl/articles/174334.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

microwave photonics
microwave photonic filter
chirped microwave signal
dual drive Mach–Zehnder modulator

Opis:

A novel optical approach to generating a chirped microwave signal by using a nonuniformly spaced finite impulse response filter is proposed and demonstrated. In this scheme, a narrowband Gaussian pulse is used as the original chirped-free signal, which is easy to be acquired. To eliminate the need of a wideband chirped-free signal, a mixer and a radio frequency signal are used to up-convert the spectrum of the original Gaussian signal. Therefore, the required frequency response can be calculated and reconstructed by a finite impulse response filter with nonuniformly spaced taps. Besides, a dual drive Mach–Zehnder modulator is used to realize single sideband modulation of the chirpedfree signal. Thus, the transfer function induced by the fiber dispersion is eliminated and the chirped microwave signal with any central frequency can be generated. In this paper, a design example of a filter with a central frequency of 10GHz is provided, and generation of the target chirped microwave signal is also demonstrated by numerical simulations.

Źródło:

Optica Applicata; 2016, 46, 3; 399-408
0078-5466
1899-7015

Pojawia się w:

Optica Applicata

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Retention, recovery and recycling of metal values from high alloyed Steel slags
Retencja, odzysk i recycling metalu z żużli wysokostopowych stali

Autorzy:

Teng, L. D.
Seetharaman, S.
Nzotta, M.
Dong, P. D.
Ge, H. L.
Wang, L. J.
Wang, H. J.
Chychko, A.

Powiązania:

https://bibliotekanauki.pl/articles/353318.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

retencja
odzysk
recykling
żużel
stal chromowa
odwęglanie
retention
recovery
recycling
slag
chromium steel
decarburization

Opis:

The work was carried out in four parallel directions. The thermodynamic activities of oxides of Cr in steel slags were determined by slag-gas equilibration technique. The ratio of Cr2+/Cr3+ in CaO-MgO(-FeO)-AlO3-SiO2-CrO× system slags was measured by X-ray absorption near edge spectra (XANES). High-temperature mass spectrometry method was also used to obtain the distribution of chromium oxides. A mathematical correlation was established for estimating the ratio of Cr2+/Cr3+ as a function of temperature, partial pressure of oxygen and slag basicity. Laboratory investigations of the decarburization of high alloy steels under controlled oxygen potentials have been carried out to retain Cr in the steel phase. A mathematical model has been developed for the decarburization process with controlled oxygen partial pressure. Experimental and theoretical investigations have been carried out in optimizing the Mo-additions to steel in the EAF practice in Uddeholm Tooling AB. Substantial saving of Mo as well as less emissions of Mo-bearing dust are indicated in the study. A salt extraction process was developed to extract the metal values from steel slags. Successful extractions, followed by electrolysis indicate that this could be a viable route towards recovery of metals from metallurgical slags.
Praca była realizowana w czterech równoległych kierunkach. Termodynamiczne aktywności tlenków Cr w żużlu zostały określone w stanie równowagi żużel-gaz. Stosunek Cr2+/Cr3+ w żużlach CaO-MgO-(-FeO)-AlO3-SiO2-CrOx mierzono metodą absorpcji promieniowania rentgenowskiego w pobliżu krawędzi widm (XANES). W celu uzyskania rozdziału tlenków chromu wykorzystano wysokotemperaturową spektrometrię masową. Korelację matematyczną ustalono do oceny stosunku Cr2+/Cr3+, jako funkcji temperatury, ciśnienia parcjalnego tlenu i zasadowości żużla. Badania laboratoryjne odwęglania stali wysokostopowych, kontrolowanego przez potencjał tlenowy przeprowadzono, aby pozostawić Cr w stali. Model matematyczny został opracowany dla procesu odwęglania z kontrolą parcjalnego ciśnienia tlenu. Eksperymentalne i teoretyczne badania zostały przeprowadzone przez optymalizację dodatku Mo do stali w procesie EAF w Uddeholm Tooling AB. Znaczne oszczędności Mo, a także mniejsza emisja pyłu zawierającego Mo są wskazane w badaniu. Proces ekstrakcji soli został stworzony, aby wyodrębnić metal z żużli stalowniczych. Udane ekstrakcje, a następnie elektrolizy, wskazują, że mogłaby to być opłacalna droga do odzysku metali z żużli metalurgicznych.

Źródło:

Archives of Metallurgy and Materials; 2010, 55, 4; 1097-1104
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Factors Affecting the Measurement of the Percentage of Gaseous Products from Boron-based Fuel-rich Propellants

Autorzy:

Liu, L.-L.
He, G.-Q.
Wang, Y.-H.
Liu, P.-J.

Powiązania:

https://bibliotekanauki.pl/articles/358720.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

fuel-rich propellant
percentage gaseous products
combustion
filter media

Opis:

Acid-washed asbestos, carbon fibre, and MgO with carbon fibre were used as the filter media in order to compare their filtering qualities in the estimation of the percentage of gaseous products (PGP) arising from the combustion of singlebase propellants, double-base propellants, and boron-based fuel-rich propellants. The comparison was based on an analysis of the experimentally registered influence of the propellant formulation, the propellant load, the maximum chamber pressure and the thickness of the MgO filter layer on the PGP from the fuel-rich propellant, and in particular on the PGP produced by combustion of boron-based fuel-rich propellant. The results showed that the experimental values of the PGP were closer to the theoretically predicted values when carbon fibre mixed with MgO powder was used as the filter medium. The PGP of boron-based fuel-rich propellant increased when the AP was in part replaced by HMX, when the AP content was increased and when boron was in part replaced by magnesium-aluminum alloy. In terms of the apparatus used in these experiments, the propellant loading density was found to have little correspondence with the PGP for boron-based fuel-rich propellant. The optimal propellant loading density for the chamber volume of 85 cm3 was found to be 2-2.5 g, in view of the reliability and safety of the experiment. It is emphasised that the thickness of the MgO filter layer is very important for the accuracy and reliability of the experiment, and that the optimum should be determined by experiment.

Źródło:

Central European Journal of Energetic Materials; 2014, 11, 1; 15-29
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Influence of He-Ne laser irradiation and cadmium and lead on changes in cell cycles at Zea mays L.
Wpływ napromieniowania laserem He-Ne oraz kadmu i ołowiu na zmiany w cyklach komórkowych Zea mays L.

Autorzy:

Różanowski, B.
Możdżeń, K.
Wójcik, J.
Nosalski, R.
Zandi, P.
Wang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/13097786.pdf

Data publikacji:

2020

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie

Tematy:

Zea mays
cell cycle
helium-neon laser
mitotic index
plant
photobiomodulation
trace element
cadmium
lead

Źródło:

Agronomy Science; 2020, 75, 1; 75-83
2544-4476
2544-798X

Pojawia się w:

Agronomy Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Simultaneous extraction of vanadium and chromium from vanadium slag using low-pressure liquid phase oxidation method

Autorzy:

Xia, J.-P.
Zheng, S.-L.
Wang, S.-N.
Liu, B.
Zou, X.

Powiązania:

https://bibliotekanauki.pl/articles/110818.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

vanadium slag
low pressure leaching
liquid phase oxidation
kinetics

Opis:

A low-pressure liquid oxidation method was proposed and proven to be effective to extract vanadium and chromium simultaneously from the vanadium slag in concentrated NaOH aqueous solutions. The effect of temperature, NaOH mass concentration, liquid-to-solid mass ratio, stirring speed and pressure on the extraction of vanadium and chromium in NaOH aqueous solutions were systematically investigated. Under the optimal reaction conditions (temperature of 473 K, liquid-to-solid mass ratio of 6:1, stirring speed of 700 rpm, NaOH mass concentration of 50%, pressure of 1 MPa and reaction time of 180 min), the vanadium and chromium recovery reached 95% and 90%, respectively. It was found that the reaction temperature and NaOH concentration were important factors for the extraction of vanadium and chromium. The kinetics of the decomposition of vanadium slag in concentrated NaOH aqueous under low pressure was analyzed using the shrinking core model, and the results indicated that the extraction of vanadium and chromium were both governed by the internal diffusion step, with apparent activation energies calculated to be 26.22 and 32.79 kJ/mol, respectively.

Źródło:

Physicochemical Problems of Mineral Processing; 2018, 54, 2; 609-619
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Synthesis and Characterization of Four Energetic Transition Metal Complexes of 3,4-Diamino-1,2,4-triazole

Autorzy:

Yin, X.
Jin, X.
Xu, C.-X.
He, P.
Wang, K.
Zhang, J.-G.

Powiązania:

https://bibliotekanauki.pl/articles/358716.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

3,4-diamino-1,2,4-triazole
theoretic study
crystal structure
thermal stability
sensitivity

Opis:

Four complexes with the formula of [M5(DATr)12~14(H2O)6](ClO4)10 (M = Mn (1), Co (2), Ni (3), Zn (4)) about their synthesis, structures and some energetic properties (such as sensitivities tests) have been described, where the DATr here denotes 3,4-diamino-1,2,4-triazole. These four compounds are all light metallic complexes with good thermal stability. The structures of 2-4 were determined by single-crystal X-ray diffraction, and the crystal structures mainly consist of penta-nuclear units. All the structures have a common interesting property in which DATr plays a role of bi-dentate ligand. Besides, it is observed from the crystal structure of 4 that DATr can be also act as a mono-dentate ligand. Thermodynamic studies of their decomposition properties and kinetic parameters show that the four complexes have high thermal stabilities. Furthermore, tests of their impact and friction sensitivities show that complexes (2) and (3) can be potential candidates as primary explosives to replace toxic lead azide.

Źródło:

Central European Journal of Energetic Materials; 2016, 13, 2; 301-320
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

SYBR Green-based real-time polymerase chain reaction assay for detection of porcine parvovirus 6 in pigs

Autorzy:

Sun, P.
Bai, C.X.
Zhang, D.
Wang, J.
Yang, K.K.
Cheng, B.Z.
Li, Y.D.
Wang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/2087328.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

porcine parvovirus 6
real-time polymerase chain reaction
SYBR Green

Źródło:

Polish Journal of Veterinary Sciences; 2020, 23, 2; 197-202
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Normal Incidence Mid-Infrared Photocurrent in AlGaN/GaN Quantum Well Infrared Photodetectors

Autorzy:

Sherliker, B.
Halsall, M. P.
Harrison, P.
Jovanović, V. D.
Indjin, D.
Ikonić, Z.
Parbrook, P. J.
Whitehead, M. A.
Wang, T.
Buckle, P. D.
Phillips, J.
Carder, D.

Powiązania:

https://bibliotekanauki.pl/articles/2041680.pdf

Data publikacji:

2005-01

Wydawca:

Polska Akademia Nauk. Instytut Fizyki PAN

Tematy:

78.30.Fs

Opis:

We report the growth and characterization of AlGaN/GaN multiple quantum well structures designed to have intersubband transitions in the mid-infrared region of the spectrum. The samples were nominally undoped but were found to contain a high electron population in the wells induced by the local polarization fields. The sample was characterized by the use of the Raman spectroscopy and photocurrent spectroscopy. The Raman spectroscopy shows electronic Raman scattering from intersubband transitions in the AlGaN/GaN quantum wells. The e$\text{}_{1}$-e$\text{}_{2}$ and e$\text{}_{1}$-e$\text{}_{3}$ transitions of the confined 2d electron population in the wells can clearly be observed. A sample designed to absorb at 4μm was fabricated into mesa structures and the vertical photocurrent measured under normal incidence illumination from the free-electron laser FELIX. A wavelength and bias dependent photocurrent was observed in the mid-IR region of spectrum. The peak responsivity was of the order of 50μA/W at 4 K, the photocurrent still being measurable at room temperature.

Źródło:

Acta Physica Polonica A; 2005, 107, 1; 174-178
0587-4246
1898-794X

Pojawia się w:

Acta Physica Polonica A

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Development of a SYBR Green I real-time PCR assay for detection of novel porcine parvovirus 7

Autorzy:

Li, Y.D.
Yu, Z.D.
Bai, C.X.
Zhang, D.
Sun, P.
Peng, M.L
Liu, H.
Wang, J.
Wang, Y.

Powiązania:

https://bibliotekanauki.pl/articles/2087207.pdf

Data publikacji:

2021

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Capsid gene
PPV7
SYBR Green I real-time PCR

Źródło:

Polish Journal of Veterinary Sciences; 2021, 24, 1; 43-49
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Synthesis and Property of 1,4-Diamino-3,6- dinitropyrazolo[4,3-c]pyrazole and Its Derivatives

Autorzy:

Li, Y.-N.
Wang, B.-Z.
Shu, Y.-J.
Zhang, S.-Y.
Lian, P.

Powiązania:

https://bibliotekanauki.pl/articles/358674.pdf

Data publikacji:

2016

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

3,6-dinitropyrazolo[4,3-c]pyrazole (DNPP)
1,4-diamino-3,6- dinitropyrazolo[4,3-c]pyrazole (DADNP)
4,4’-(triaz-1-ene-1,3-diyl)bis(1- amine-3,6-dinitropyrazolo[4,3-c]pyrazole) (TBADNP)
N-amination reaction
synthesis
property

Opis:

A synthetic procedure has been developed for the synthesis of 1,4-diamino- 3,6-dinitropyrazolo[4,3-c]pyrazole (DADNP) via N-amination reaction. Its derivatives, 4,4’-(triaz-1-ene-1,3-diyl)bis(1-amine-3,6-dinitropyrazolo[4,3-c] pyrazole) (TBADNP) and 1,4-dinitramino-3,6-dinitropyrazolo[4,3-c]pyrazole (DNADNP), were first designed and synthesized by the diazotization and nitrification of amino group, and their structures were characterized by IR, 1H NMR, 13C NMR, elementary analysis and MS. The thermal properties of target compounds were studied by means of differential scanning calorimetry (DSC) and thermogravimetry (TG). The thermal decomposition peak temperatures of DADNP, TBADNP and DNADNP are 227, 236 and 288 °C, respectively. Results show that the derivatives of 1,4-diamino-3,6-dinitropyrazolo[4,3-c]pyrazole have better thermal stability.

Źródło:

Central European Journal of Energetic Materials; 2016, 13, 2; 321-331
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Ethnobotanical study on medicinal plants used by Li people in Ledong, Hainan Island, China

Autorzy:

Huang, W.
Li, P.
Liu, Y.
Ju, Y.
Wang, J.
Ntumwel, C.B.
Long, C.

Powiązania:

https://bibliotekanauki.pl/articles/57864.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

ethnobotany
traditional knowledge
ethnomedicine
medicinal plant
Li ethnic group
ethnic group
Ledong county
Hainan Island
China

Opis:

The paper documents on the uses of traditional medicinal plants used for treating human ailments in three villages of Ledong, a county inhabited by Liethnic group in the southwest of Hainan Province, China. Semi-structured interviews, key informant interviews and participatory observations were used to collect ethnobotanical data from February to March 2012 and in July 2013. The data collected was analyzed using descriptive statistics. Thirty native knowledgeable people were interviewed. The Li community uses 50 plant species in 36 families for medicinal purposes. The most common medicinal plant families were Leguminosae (14%), Compositae (6%), and Euphorbiaceae (6%), and the most common preparations methods were decoction (84%), crushing (38%), and poultice (34%). The traditional medicinal plants were mainly used for hemostasis (12.9%), body pains (11.4%), gastrointestinal disorders (11.4%), and trauma (10%). Twenty-four species of medicinal plants (48%) have never been reported in the literature of Li medicines. In addition, 22 species (44%) have already been studied by researchers and their extracts or compounds were good bioactives. However, the rapid socioeconomic development in the county is the main threat to the conservation of Li medicine and has resulted in the decrease in the abundance and use of medicinal plants and associated traditional knowledge. Other factors accounting for a decrease in the use of Li medicinal plants like loss of plant diversity, change of land use, and threatened traditional knowledge were equally discussed.

Źródło:

Acta Societatis Botanicorum Poloniae; 2016, 85, 1
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Microstructure, Mechanical and Detonation Properties of Elastomeric Micro/Ultrafine-rubber Modified TNT-based Molten Energetic Composites

Autorzy:

Ma, Q.
Wang, P.-S.
Luo, G.
Wen, M.-P.
Gao, D.-Y.
Zheng, B.-H.
Shu, Y.-J.

Powiązania:

https://bibliotekanauki.pl/articles/358122.pdf

Data publikacji:

2015

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego

Tematy:

micro and ultrafine rubber
2,4,6-trinitrotoluene
molten energetic composites
mechanical properties
detonation performance

Opis:

Elastomeric micro- and ultrafine-rubber are first considered as binders in melt-cast explosives for improving the mechanical properties. Acrylonitrile-butadiene rubber (NBR), in ultrafine fully vulcanized form (UF-NBR), carboxylated acrylonitrile-butadiene rubber (CNBR), in ultrafine fully vulcanized form (UF-CNBR), styrene-butadiene rubber (SBR), in ultrafine fully vulcanized form (UF-SBR), carboxylated styrene-butadiene rubber (CSBR), in ultrafine fully vulcanized form (UF-CSBR), acrylic rubber (ACM), in ultrafine fully vulcanized form (UF-ACM), room temperature vulcanized silicone rubber (RTV), in ultrafine fully vulcanized form (UF-RTV) and polytetrafluoroethene (PTFE) in micro-rubber form (PTFE-M) were utilized for modifying 2,4,6-trinitrotoluene (TNT) based melt-cast explosives. Based on their dispersity in TNT and RDX slurry, only UF-NBR, UF-CNBR and PTFE-M can be used. In the modification experiment, their influence on the mechanical and detonation performance of the matrixes were studied, as well as the impact sensitivity. Compared with PTFE-M and UF-CNBR, UF-NBR improved the tensile and compressive strength of the original formulation CYCLOTOL-65/35. The toughening mechanism was also explained through interfacial interactions and fracture energy analysis. The predicted detonation properties of the modified formulations (detonation pressure variations from 26 to 28 GPa, detonation velocity variations from 7900 to 8100 m/s) are at the same energy level as CYCLOTOL-65/35. In addition, the drop hammer impact testing results confirm that the formulation containing UF-NBR is more sensitive than the one with UF-CNBR, with the same amount of additive.

Źródło:

Central European Journal of Energetic Materials; 2015, 12, 4; 723-743
1733-7178

Pojawia się w:

Central European Journal of Energetic Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 41.

Tytuł:

Laboratory investigation of self-healing properties on geosynthetic clay liners with flaw

Autorzy:

Zhang, G.-W.
Zhang, H.-Y.
Wang, J.-F.
Zhou, L.
Liu, P.
Jiang, X.

Powiązania:

https://bibliotekanauki.pl/articles/204652.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

landfills
geosynthetic clay liner
self healing
hydraulic conductivity

Opis:

The objective of this paper is to evaluate the self- healing properties of a commercially-available geosynthetic clay liner (GCL) using flexible-wall permeameter. The GCLs are produced by the same factory, but the contents of bentonite are different. Also the hydraulic conductivities (HC) of GCLs with no defect are different. In this study, specimens were completely saturated under the backpressure of 20 kPa before the test. Permeability tests were performed on GCL specimens with penet rating flaw and also on specimens permeated with distilled water and CaCl2 solutions. The test results were presented and discussed. Experimental results showed that the GCL with penetrating flaw did not exhibit complete self-healing in the case of flaw. After 120 days, the hydraulic conductivity increased by approximately an order of magnitude. In addition, CaCl2 solutions had a significant influence on the hydraulic conductivity. The research findings might be of interest to researchers and engineers who design liners for landfills and other liquid containment facilities.

Źródło:

Archives of Environmental Protection; 2015, 41, 1; 53-58
2083-4772
2083-4810

Pojawia się w:

Archives of Environmental Protection

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

Rapid screening of monoclonal antibodies against porcine circovirus type 2 using colloidal gold-based paper test

Autorzy:

Jin, Q.Y.
Feng, L.L.
Wang, Y.B.
Li, P.
Yang, J.F.
Teng, M.
Chai, S.J.
Xing, G.X.
Zhang, G.P.

Powiązania:

https://bibliotekanauki.pl/articles/16539073.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

porcine circovirus type 2 (PCV2)
screening of MAbs
paper test

Opis:

A proof of concept for using paper test as a suitable method in the production of monoclonal antibodies (MAbs) is reported. The paper test which detects antibodies against porcine circovirus type 2 (PCV2) using colloidal gold-labelled capsid protein as the antigen probe was applied exclusively in the screening of anti-PCV2 MAbs. It allowed the detection of 118 single cell clones within 30 min using naked eyes. MAbs with specific binding to authentic epitopes on the virus were selected using a blocking strategy in which the antibody was pre-incubated with PCV2 viral sample before applying to the test paper. Five hybridomas secreting MAbs against the capsid protein were obtained, with only three of them capable of binding to PCV2. The results were validated and confirmed using enzyme-linked immunosorbent assay and immunofluorescence assay. The paper test is simple, rapid, and independent on professional technicians and proves to be an excellent approach for the screening of MAbs against specific targets.

Źródło:

Polish Journal of Veterinary Sciences; 2022, 25, 1; 27-34
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 43.

Tytuł:

Effects of synthesis conditions on the synthesis of carbon nanofibers by ethanol catalytic combustion
Wpływ warunków syntezy na syntezę nanowłókien węglowych metoda katalitycznego spalania etanolu

Autorzy:

Cheng, J.
Zou, X. P.
Zhu, G.
Wang, M. F.
Su, Y.
Yang, G. Q.
Lu, X. M.

Powiązania:

https://bibliotekanauki.pl/articles/354282.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

synteza
nanowłókna węglowe
spalanie
etanol
carbon nanofibers
ethanol catalytic combustion
influence factors

Opis:

In this paper, the effects of position of substrates in flames, preparation time, stability of flames and catalyst precursors on the synthesis of carbon nanofibers (CNFs) by ethanol catalytic combustion (ECC) were investigated. For investigating the effects of these influence factors on the synthesis of CNFs, several sets of controlled experiments were performed, such as preparation experiments with different position of substrates in flames, different preparation time, stable and unstable flames, and different catalyst precursors. In our experiments, the catalyst precursors were iron nitrate, cobalt nitrate, nickel nitrate, and iron chloride, cobalt chloride, nickel chloride. The as-synthesized products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and Raman spectroscopy. Our results indicate that the optimal position of substrates in flames is more than 1cm and less than 2.5cm, the optimal preparation time is more than 5min and less than 30min for massive yield, stable flames would be tent to synthesize CNFs with mainly single-type morphology and could improve the graphitization of CNFs, and the catalyst precursors obviously have effects on the synthesis of CNFs.
W niniejszej pracy zbadany został wpływ położenia substratów w płomieniach, czasu przygotowania, stabilności płomieni i prekursorów katalizatora na syntezę nanowłókien węglowych (CNFs) metodaą katalitycznego spalania etanolu (ECC). W celu zbadania wpływu tych czynników na syntezę nanowłókien węglowych przeprowadzono kilka zestawów kontrolowanych eksperymentów, przy różnej pozycji podłoży w płomieniach, różnym czasie przygotowania, płomieniach stabilnych i niestabilnych i przy użyciu różnych prekursorów katalizatora. W naszych eksperymentach jako prekursory katalizatora stosowano azotany: żelaza, kobaltu i niklu oraz chlorki żelaza, kobaltu i niklu. Tak otrzymane produkty syntezy scharakteryzowano za pomocą skaningowej mikroskopii elektronowej (SEM), transmisyjnej mikroskopii elektronowej (TEM) i spektroskopii Raman'a. Nasze wyniki wskazują, że optymalna pozycja podłoży w płomieniach to więcej niż 1 cm i mniej niż 2,5 cm, a optymalny czas przygotowania to więcej niż 5 min i mniej niż 30 min dla dużej wydajności. Stabilność płomieni będzie sprzyjać syntezie nanowłókien o morfologii jednego typu i może poprawić ich grafityzacje, a rodzaj prekursora katalizatora ma wpływ na syntezę nanowłókien.

Źródło:

Archives of Metallurgy and Materials; 2012, 57, 3; 745-751
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 44.

Tytuł:

Badania okresu gwarancyjnego dla systemu wieloskładnikowego, w którym zachodzą interakcje uszkodzeniowe
Research on warranty interval of multi-component system with failure interaction

Autorzy:

Cheng, Z. H.
Bai, Y. S.
Cai, L. Y.
Wang, L. Ch.
Li, P. J.
Chen, L.

Powiązania:

https://bibliotekanauki.pl/articles/301278.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN

Tematy:

okres gwarancyjny
koszty
dostępność
interakcje uszkodzeniowe
wieloelementowy
warranty period
cost
availability
failure interaction
multi-component

Opis:

W oparciu o analizę interakcji uszkodzeniowych, przyjęto dla systemu wieloskładnikowego politykę gwarancyjną obejmującą niepełną odnowę profilaktyczną. Zbadano średnią intensywność uszkodzeń dla każdego okresu gwarancyjnego oraz skonstruowano modele kosztów obsługi gwarancyjnej oraz dostępności biorąc pod uwagę intensywność uszkodzeń interakcyjnych. Jako przykład podano projekt okresu gwarancyjnego, który może potwierdzić poprawność przyjętego modelu oraz przedstawiono zalety takiego projektu. W badaniach opracowano technikę i metody ustalania okresu gwarancyjnego dla systemów wieloskładnikowych, które stanowią istotny wkład do teorii gwarancji.
Based on the analysis of failure interaction, imperfect preventive warranty policy is adopted for the multi-component system. Average failure rate of each warranty interval is studied and warranty cost model and availability model are built as viewed from interactive failure rate. Then Warranty period project is brought forward as an example, which can validate the feasibility of model and show the advantage of the project. The research can provide technique and methods for determining Warranty Period of multi-component system, which further enriches and perfects the warranty theory.

Źródło:

Eksploatacja i Niezawodność; 2011, 4; 49-55
1507-2711

Pojawia się w:

Eksploatacja i Niezawodność

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 45.

Tytuł:

Exploring agent-based wireless business models and decision support applications in an airport environment

Autorzy:

Wang, Y.
Cuthbert, L.
Mullany, F. J.
Stathopoulos, P.
Tountopoulos, V.
Sotiriou, D. A.
Mitrou, N.
Senis, M.

Powiązania:

https://bibliotekanauki.pl/articles/308938.pdf

Data publikacji:

2004

Wydawca:

Instytut Łączności - Państwowy Instytut Badawczy

Tematy:

wireless applications
multi-agent systems
wireless business models
wireless SLA
radio resource management

Opis:

This paper describes an intelligent communication and decision support system for providing wireless services in an airport environment. A novel agent-based business model is proposed and the value chain is analysed for wireless applications. This system is studied and developed within the scope of the IST ADAMANT project, where the Athens International Airport (AIA) is used as the trial environment. First of all, a set of advanced, realistic decision support application scenarios enhancing the airport facilities both for the passengers and for the airport staff is identified. Most of the applications can be summarised as location-based personalised services. They refer both to airport internal users and to passenger users. In order to provide these services, location-sensitive service level agreements (SLAs) and radio resource management (RRM) are introduced. The design of such a system is envisaged based on a generic, multi-agent architecture, which is also presented in this paper.

Źródło:

Journal of Telecommunications and Information Technology; 2004, 3; 57-64
1509-4553
1899-8852

Pojawia się w:

Journal of Telecommunications and Information Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 46.

Tytuł:

Serological and molecular evidence of Coxiella burnetii in samples from humans and animals in China

Autorzy:

El-Mahallawy, H.S.
Kelly, P.
Zhang, J.
Yang, Y.
Wei, L.
Tian, L.
Fan, W.
Zhang, Z.
Wang, C.

Powiązania:

https://bibliotekanauki.pl/articles/49293.pdf

Data publikacji:

2016

Wydawca:

Instytut Medycyny Wsi

Źródło:

Annals of Agricultural and Environmental Medicine; 2016, 23, 1
1232-1966

Pojawia się w:

Annals of Agricultural and Environmental Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Internal Friction of Li7La3Zr2O12 Based Lithium Ionic Conductors

Autorzy:

Wang, X. P.
Song, L.
Hu, J.
Xia, Y. P.
Xia, Y.
Gao, Y. X.
Zhang, L. C.
Magalas, L. B.
Fang, Q. F.

Powiązania:

https://bibliotekanauki.pl/articles/958222.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

lithium ionic conductor
Li7La3Zr2O12
internal friction

Opis:

The diffusion mechanisms of lithium ions in tetragonal phase as well as in Al and Nb stabilized cubic Li₇La₃Zr₂O₁₂ compounds were investigated by low-frequency internal friction technique. In the cubic Li₇La₃Zr₂O₁₂ phase, a remarkable relaxation-type internal friction peak PC with a peak height up to 0.12 was observed in the temperature range from 15°C to 60°C. In the tetragonal phase however, the height of the PT peak dropped to 0.01. The obvious difference of the relaxation strength between the cubic and tetragonal phases is due to the different distribution of lithium ions in lattice, ordered in the tetragonal phase and disordered in the cubic phase. Based on the crystalline structure of the cubic garnet-type Li₇La₃Zr₂O₁₂ compound, it is suggested that the high internal friction peak in the cubic phase may be attributed to two diffusion processes of lithium ions: 96h↔96h and 96h↔24d.

Źródło:

Archives of Metallurgy and Materials; 2016, 61, 1; 21-24
1733-3490

Pojawia się w:

Archives of Metallurgy and Materials

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 48.

Tytuł:

Hydrogen sulfide modulates gastric acid secretion in rats via involvement of substance P and nuclear factor-kappaB signaling

Autorzy:

Sun, H.-Z.
Gong, X.-Y.
Wu, L.
Wang, X.-X.
Nie, Y.-N.
Shang, R.
Wang, H.
Li, Y.-C.
Sun, Q.-F.
Gao, P.-F.
Bi, J.-X.

Powiązania:

https://bibliotekanauki.pl/articles/69523.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Fizjologiczne

Tematy:

hydrogen sulphide
gastric acid secretion
rat
nuclear factor-kappaB
substance P
transient receptor potential vanilloid type 1
neurokinin-1

Źródło:

Journal of Physiology and Pharmacology; 2018, 69, 3
0867-5910

Pojawia się w:

Journal of Physiology and Pharmacology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 49.

Tytuł:

Airborne virus sampling-efficiencies of samplers and their detection limits for infectious bursal disease virus (IBDV)

Autorzy:

Zhao, Y.
Aarmink, A.J.A.
Wang, W.
Fabri, T.
Groot Koerkamp, P.W.
de Jong, M.C.M.

Powiązania:

https://bibliotekanauki.pl/articles/51080.pdf

Data publikacji:

2014

Wydawca:

Instytut Medycyny Wsi

Opis:

Introduction. The airborne transmission of infectious diseases in livestock production is increasingly receiving research attention. Reliable techniques of air sampling are crucial to underpin the findings of such studies. This study evaluated the physical and biological efficiencies and detection limits of four samplers (Andersen 6-stage impactor, all-glass impinger “AGI-30”, OMNI-3000 and MD8 with gelatin filter) for collecting aerosols of infectious bursal disease virus (IBDV). Materials and Method. IBDV aerosols mixed with a physical tracer (uranine) were generated in an isolator, and then collected by the bioaerosol samplers. Samplers’ physical and biological efficiencies were derived based on the tracer concentration and the virus/tracer ratio, respectively. Detection limits for the samplers were estimated with the obtained efficiency data. Results. Physical efficiencies of the AGI-30 (96%) and the MD8 (100%) were significantly higher than that of the OMNI-3000 (60%). Biological efficiency of the OMNI-3000 (23%) was significantly lower than 100% (P < 0.01), indicating inactivation of airborne virus during sampling. The AGI-30, the Andersen impactor and the MD8 did not significantly inactivate virus during sampling. The 2-min detection limits of the samplers on airborne IBDV were 4.1 log10 50% egg infective dose (EID50) m-3 for the Andersen impactor, 3.3 log10 EID50 m-3 for the AGI-30, 2.5 log10 EID50 m-3 for the OMNI-3000, and 2.9 log10 EID50 m-3 for the MD8. The mean half-life of IBDV aerosolized at 20 °C and 70% was 11.9 min. Conclusion. Efficiencies of different samplers vary. Despite its relatively low sampling efficiency, the OMNI-3000 is suitable for use in environments with low viral concentrations because its high flow rate gives a low detection limit. With the 4 samplers investigated, negative air samples cannot guarantee virus-free aerial environments, which means that transmission of infectious agents between farms may still occur even when no virus has been detected.

Źródło:

Annals of Agricultural and Environmental Medicine; 2014, 21, 3
1232-1966

Pojawia się w:

Annals of Agricultural and Environmental Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 50.

Tytuł:

Construction of a recombinant baculovirus expressing swine hepatitis E Virus ORF2 and preliminary research on its immune effect

Autorzy:

Yang, Z.
Wang, K.
Hu, Y.
Yuan, P.
Yang, Y.
Xie, L.Y.
Huang, S.L.
Liu, J.
Ran, L.
Song, Z.H.

Powiązania:

https://bibliotekanauki.pl/articles/2087759.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

swine HEV
ORF2
baculovirus
immunogenicity

Źródło:

Polish Journal of Veterinary Sciences; 2018, 21, 1; 47-54
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

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