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Wyświetlanie 1-15 z 26
Tytuł:
Green ultrasound-assisted extraction of anthocyanin and phenolic compounds from purple sweet potato using response surface methodology
Autorzy:
Zhu, Z.
Guan, Q.
Guo, Y.
He, J.
Liu, G.
Li, S.
Barba, F.J.
Jaffrin, M.Y.
Powiązania:
https://bibliotekanauki.pl/articles/24695.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
ultrasound
extraction
anthocyanin
phenolic compound
sweet potato
response surface methodology
Źródło:
International Agrophysics; 2016, 30, 1
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application the optimization models to analysis of the industrial pollutant emission in China
Autorzy:
Zhang, Z.
Liu, G.-D.
Guo, H.
Liu, L.
Deng, S.-H.
Powiązania:
https://bibliotekanauki.pl/articles/950041.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
industrial emissions
air pollution
mathematical models
sulfur dioxide
air pollutant emission
environmental indicators
industrial pollutants
smoke emission
emisja przemysłowa
zanieczyszczenie powietrza
model matematyczny
dwutlenek siarki
ditlenek siarki
emisja zanieczyszczeń powietrza
wskaźniki środowiskowe
zanieczyszczenia przemysłowe
emisja dymu
Opis:
An industrial planning is made based on the optimization model. Factor analysis was used to reject relativity among the environmental indicators. Then, thirty nine industries were clustered into four clusters. Lastly, optimization model was used to plan the industrial structure. Adjusting the industrial structure, it is difficult to reduce vast SO2, smoke, and dust with total industrial output value growth; the air pollutant emission only can be decreased by 10%. The parameters of smoke emission are limited constrains for the optimization. The reasonable and feasible way to solve the problem is to introduce the lower smoke emission technique of the cluster 2 and 4 industries.
Źródło:
Environment Protection Engineering; 2013, 39, 1; 87-99
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A First Principle Study of Antifluorite $Be_2X$ (X = C, Si) Polymorph
Autorzy:
Yan, H.
Wei, Q.
Chang, S.
Guo, P.
Powiązania:
https://bibliotekanauki.pl/articles/1505408.pdf
Data publikacji:
2011-03
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.15.Mb
71.20.Nr
78.20.Ci
Opis:
The crystal structure, electronic, and mechanical properties of antifluorite $Be_2X$ (X = C, Si) are calculated using the first-principles method based on density functional theory. Our calculated lattice parameters at equilibrium volume are in good agreement with the experimental data and other theoretical calculations. In order to obtain further information, the mechanical properties including bulk modulus, shear modulus, Young's modulus, and Poisson's ratio are deduced from calculated elastic constants. Meanwhile, the sound velocity and Debye temperature are also predicted. The bonding nature in $Be_2X$ (X = C, Si) is a complex mixture of covalent and ionic characters.
Źródło:
Acta Physica Polonica A; 2011, 119, 3; 442-446
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigation of a high temperature resistant and low friction fracturing fluid
Autorzy:
Xiao, B.
Zhang, S.
Zhang, J.
Hou, T.
Guo, T.
Powiązania:
https://bibliotekanauki.pl/articles/109339.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
high temperature fracturing fluid
resistance to shearing
hydroxypropyl guar
low friction
delayed crosslinking
Opis:
The performance of a hydraulic fracturing fluid (HFF) system directly determines the efficiency of stimulation. Since the targeted formations of most oil fields in China are characterized by large depth (~5000 m), high temperature (160 to 180 °C) and tight lithology, newer and suitable HFFs have to be developed. Based on a newly synthetized organo-boron/-zirconium cross-linking agent (Gh-g), a composite temperature stabilizer (WJ-6) and other optimized additives via indoor evaluation, this study introduced a novel HFF, which is thermally stable at high temperature (HT) up to 180 °C and exerted low friction pressures. The performance of HFF was evaluated in the laboratory. The experimental results showed that the HFF system performed well at HTs. It maintained a viscosity of 100 mPa•s or more after 90 min of shearing (170 s−1) at 180 °C. Furthermore, the system exhibited delayed cross-linking. It took 120 s for the cross-linking reaction to complete; therefore, the tube friction was reduced to a large extent. Another characteristic feature of the formulated HFF system was the low friction pressures, where the drag reduction percentage was in the range from 35% to 70%. Moreover, only minor damage was caused by the fluid to the formation core samples. The average core permeability damage was 19.6%. All these qualities ensure that this fluid system is in full compliance with the requirements of the fracturing treatment.
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 1; 37-47
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
pUC18-CpG stimulates RAW 264.7 via TBK1-mediated pathway and presents adjuvanticity in mice
Autorzy:
Wu, J.
Chen, Q.
Xin, T.
Sun, Y.
Jia, H.
Hou, S.H.
Guo, X.Y.
Powiązania:
https://bibliotekanauki.pl/articles/2087554.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adjuvant
CpG DNA
Echinococcus granulosus
TBK1
type I interferons
Źródło:
Polish Journal of Veterinary Sciences; 2019, 2; 195-201
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic-accumulative operation policy of continuous distillation for the purification of anisole
Autorzy:
Wang, Z.
Li, S.
Wang, C.
Guo, X.
Bai, P.
Powiązania:
https://bibliotekanauki.pl/articles/779622.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
anisole recycling
dynamic-accumulative operation policy
continuous distillation
simulation
Opis:
In the B10 isotope enrichment industry, the purification of anisole mixture makes great sense. A dynamic-accumulative operation policy of continuous distillation (DACD) with repeated filling and dumping of the still is proposed for the separation of trace heavy impurities in the recycled anisole. To simulate and optimize the purification process of anisole, a mathematical model of DACD is derived, and the computer codes are developed in the MATLAB environment. Moreover, the experiment is performed in a pilot-scale distillation column. The results show that the experimental date agrees well with simulation results. DACD could solve the difficulty of flow rate control when the bottom flow rate is very small in continuous distillation. The size of the still in this operation mode is also smaller than that in batch distillation. And the yield of anisole is raised to 99.91%. In a word, DACD is especially suitable for separating trace heavy impurities from the recycled anisole.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 1; 33-39
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Expression and characterisation of cucumber fruit flesh thickness-related gene CSA2M058670.1
Autorzy:
Wang, W.
Wang, S.
Guo, Y.
Li, M.
Hou, L.
Powiązania:
https://bibliotekanauki.pl/articles/12709293.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Bulked segregant analysis combined with specific length amplified fragment sequencing techniques have been applied to determine the fine genetic mapping of fruit flesh thickness-related genes in cucumber. Herein, the Csa2M058670.1 gene was subjected to real time fluorescence quantitative PCR (qRT-PCR) and sequence analysis, indicating a strong correlation with cucumber fruit flesh thickness. Expression and characterisation of the Csa2M058670.1 gene were performed based on previous studies. The results of the fluorescence-based quantitative PCR showed that Csa2M058670.1 was expressed in all organs, but levels were highest in fruit peel, fruit flesh, and female flowers. Furthermore, Csa2M058670.1 expression was induced by abiotic stresses including drought, low temperature, and high salt. Domain analysis revealed that the protein encoded by Csa2M058670.1 possesses an SET (Su(var), Enhancern of zeste CE(z), and Trithorax) domain that may control cell division and differentiation. Therefore, we speculated that Csa2M058670.1 might affect fruit flesh thickness in cucumbers by influencing cell division.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 2; 25-33
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research of lateral force of pipe conveyor belt’s vertical transport section
Autorzy:
Wang, S.
Guo, Y.-C.
Li, D. Y.
Hu, K.
Powiązania:
https://bibliotekanauki.pl/articles/223504.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
pipe belt conveyor
vertical transport
lateral force
discrete element simulation
experimental verification
przenośnik taśmowy
transport pionowy
siła boczna
symulacja
platforma doświadczalna
Opis:
In order to release the lateral force of pipe conveyor belt in vertical transportation, the thesis had a study of the lateral force of the conveyor belt. By making use of Janssen Principles and fractal theory, based on reasonable simplification, the author established a mathematical model of the lateral force in vertical transportation, and with the research foundation of the pipe belt conveyor for underground transportation, through solution analysis, the author found out that the change of material diameter would lead to nonlinear variation of the lateral force of the conveyor belt. Under the circumstances of different material diameter, discrete element method was adopted to simulate the lateral force of the conveyor belt, thus working out the distribution curve chart of the lateral force. To verify the reliability of the theory, the author built an experimental platform for pipe conveyor belt in vertical transportation, and experimented with five groups of materials in different diameter, working out the strain of lateral force of the characteristic conveyor belt; by comparing the theoretical result, the simulation result and the experimental result, it showed that the solution to relieving lateral force through optimization selection of material diameter put forward in this thesis was reasonable and effective. It provides theoretical reference for the design of pipe belt conveyor.
Źródło:
Archives of Transport; 2016, 37, 1; 67-75
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of usefulness of the mems-based integrated navigation unit in car navigation
Autorzy:
Uradziński, M.
Rapiński, J.
Tomaszewski, D.
Śmieja, M.
Guo, H.
Yu, S.
Jian, X.
Powiązania:
https://bibliotekanauki.pl/articles/298138.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
MEMS
inertial navigation
GNSS
GNSS/IMU integration
car navigation
Opis:
Due to the development of MEMS, there is an opportunity to build a low-cost integrated navigation systems, operating independently of horizon visibility. This paper presents the proposal of an integrated GPS/IMU platform using MEMS technology. In order to verify the performance of a system built at the University of Warmia and Mazury, an experiment was conducted. In this experiment a precise Javad GNSS receiver, commercial grade GPS/IMU XW – ADU5660 and own-built system were used. The experiment was conducted to compare the results obtained from self built device with the working military integrated navigation unit. During the study all three devices were mounted inside moving vehicle. The car drove route inside the Kortowo campus, during which, all equipment performed measurements. Then, the results from both integrated systems were compared with RTK (Real Time Kinematic) results from Javad receiver. Experiments prove that the performance of own device is comparable to the commercial device.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2017, 20(4); 321-331
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of an indirect ELISA based on glycoprotein B gene for detecting of Feline herpesvirus type 1
Autorzy:
Tan, Y.
Dong, G.
Niu, J.
Guo, Y.
Yi, S.
Sun, M.
Wang, K.
Hu, G.
Powiązania:
https://bibliotekanauki.pl/articles/2087468.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
feline herpesvirus type 1
gB protein
indirect ELISA
prokaryotic expression
Źródło:
Polish Journal of Veterinary Sciences; 2019, 3; 631-633
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and Properties of Natural Cellulose Fibres from
Otrzymywanie i właściwości folii celulozowych z włókien łykowych
Autorzy:
Qu, L
Tian, M.
Guo, X.
Pan, N
Zhang, X.
Zhu, S
Powiązania:
https://bibliotekanauki.pl/articles/234492.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
Broussonetia papyrifera (BP)
natural cellulose fibre
fibre extraction
microwave-assisted
włókna celulozowe
włókna łykowe
folia celulozowa
Broussonetia Papyrifera (BP)
Opis:
Natural cellulose fibres from Broussonetia papyrifera (L.) Vent. (BP) bast were systematically investigated in this paper. To begin with, BP fibres were successively extracted from BP bast by four different degumming methods, among which the microwave-assisted method exhibited high efficiency. It was found that non-cellulose substances were sufficiently removed or reduced after the degumming process, but the cellulose I structure had not changed from bast to fibres based on the XRD and FTIR results. Meanwhile the BP fibres exhibited high crystallinity (75 ~ 77%), high breaking strength (2.19 ~ 2.39 cN/dtex) and a remarkable moisture region (6.3 ~ 8.7%), but low breaking elongation (1.0 ~ 2.1%). All those results indicated that the BP fibres had properties resembling those of traditional natural cellulose fibres (e.g. cotton and flax); therefore they could be viewed as a promising alternative source for natural cellulose bundle fibres.
Artykuł poświecono systematycznym badaniom naturalnych włókien celulozowych z Broussonetia Papyrifera (BP). Włókna ekstrahowano z włókien łykowych BP poprzez 4 rożne metody odpreparowania pomiędzy z których metoda za pomocą zastosowania ultradźwięków pozwoliła na uzyskanie wysokiej wydajności. Stwierdzono, że nie celulozowe substancje były dostatecznie usunięte lub zredukowane po procesie odpreparowania. Dzięki badaniom XRD i FITR można było wykazać, że struktura celulozy (I) nie zmieniła się pomiędzy włóknami łykowymi i otrzymanymi z nich wyrobami. dalsze badania wykazały źe włókna BP maja wysoką krystaliczność (75 - 77%), wysoką wytrzymałość(2.19 - 2.39 cN/dtex) i znaczną pochłanialność wilgoci (6.3 - 8.7%) natomiast małe wydłużenie przy zerwaniu (1.0 - 2.1%). Wszystkie te wyniki wskazują,że włókna BP posiadają właściwości przypominające właściwości tradycyjnych, naturalnych włókien celulozowych (np. bawełny i lnu). Dlatego też badane włok-na można uważać jako alternatywne źródło naturalnych włókien celulozowych.
Źródło:
Fibres & Textiles in Eastern Europe; 2014, 4 (106); 24-28
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A noteworthy disjunction of the epiphytic moss Lewinskya graphiomitria
Autorzy:
Plasek, V.
Kominkova, Z.
Cihal, L.
Fialova, L.
Guo, S.
Powiązania:
https://bibliotekanauki.pl/articles/2130697.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Asia
Australasia
China
intercontinental disjunction
New Zealand
Orthotrichum
phytogeography
Opis:
Lewinskya graphiomitria (Müll. Hal. ex Beckett) F. Lara, Garilleti & Goffinet, hitherto considered a New Zealand endemic species, has recently been repeatedly found at different localities in China, thereby representing an intriguing example of a remote intercontinental disjunction among the bryophytes. Herein, the current distribution of this species is reviewed and mapped and its disjunct occurrence in the two widely separated areas is discussed. Maps showing the quantification of extrapolated projection areas for L. graphiomitria are also presented. A possible way of its migration from New Zealand to Asia or vice versa is explained.
Źródło:
Acta Societatis Botanicorum Poloniae; 2020, 89, 3
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Characterization of Photochromic Spirooxazine/Polyvinylidene Fluoride Fiber Membranes via Electrospinning
Wytwarzanie za pomocą elektroprzędzenia i charakterystyka fotochromowych membran światłowodowych z spiroksazyny i fluorku poliwalildanu
Autorzy:
Peng, L.
Guo, R.
Lan, J.
Jiang, S.
Powiązania:
https://bibliotekanauki.pl/articles/946161.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
PVDF
spirooxazine
electrospinning
photochromic
hydrophobic
spiroksaksyna
elektroprzędzenie
membrany światłowodowe
Opis:
In this study, photochromic spirooxazine material of N-methyl-3,3-dimethyl-9'-hydroxy-spiro[2H-indole-2-[3H] naphtho [2,1-b] [1,4] oxazine] was synthesised. Spirooxazine/PVDF fiber (SPF) membranes with different contents ofspirooxazine were successfully prepared by electrospinning. The SPF membranes were characterised by FTIR and SEM.The photochromic properties and contact angle of the SPF membranes were evaluated. The results show that the SPF membranes change from colorless to blue whenexposed to UV light, but they revert to their original colour after the UV light disappears. The colour difference and contact angle of the SPF membranes firstly increase and then decrease with a rise in the content of spirooxazine.
W pracy otrzymano fotochromowy materiał spirooksazynowy N-metylo-3,3-dimetylo-9'-hydroksy-spiro [2H-indolo-2 - [3H] nafto [2,1-b] [1,4] oksazyny]. Za pomocą elektroprzędzenia wytworzono membrany z spiroksaksyny i fluorku poliwalildanu PVDF (SPF) o różnej zawartości spiroksaksyny. Błony SPF scharakteryzowano za pomocą FTIR i SEM. Oceniono właściwości fotochromowe i kąt zwilżania błon SPF. Wyniki pokazały, że membrany SPF zmieniają kolor z bezbarwnego na niebieski po ekspozycji na światło UV, ale powracają do swojego pierwotnego koloru po zaniku światła UV. Różnica barwy i kąt zwilżania membran SPF najpierw wzrastają, a następnie zmniejszają się wraz ze wzrostem zawartości spirooksazyny.
Źródło:
Fibres & Textiles in Eastern Europe; 2018, 4 (130); 34-38
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Critical State Stability and Flux Jumps Dynamics in a Single Crystal of $YBa_{2}Cu_{3}O_{7-δ }$
Autorzy:
Nabiałek, A.
Vasiliev, S.
Chabanenko, V.
Yao, X.
Cai, Y.
Guo, L.
Kuzovui, M.
Powiązania:
https://bibliotekanauki.pl/articles/1431339.pdf
Data publikacji:
2012-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.72.-h
74.25.Sv
Opis:
We studied the critical state stability and the dynamics of the flux jumps, caused by thermomagnetic avalanches, in a large (3× 3× 1 $mm^{3}$) single crystal of $YBa_{2}Cu_{3}O_{7-δ }$ superconductor. Flux jumps were observed only at the lowest temperatures attainable in our system (at about 2.2 K) and for the external magnetic field parallel to the c-axis of the investigated crystal. It is shown that thermomagnetic avalanches are initiated in dynamic conditions, for which the magnetic diffusivity is much smaller than the thermal diffusivity. For large single crystals of $YBa_{2}Cu_{3}O_{7-δ }$ immersed directly in liquid helium, the analysis of the critical state stability can be performed in isothermal approximation. However, the conditions of the critical state stability can change dramatically by improving the thermal isolation between the sample and the surrounding coolant. The dynamics of the flux jumps was analyzed in the framework of the model of magnetic diffusion. It is shown that the magnetic diffusivity changes dramatically during the process of the thermomagnetic avalanche. We also studied the influence of the external magnetic field and of the magnetic history on the duration of the flux jumps.
Źródło:
Acta Physica Polonica A; 2012, 121, 4; 836-840
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
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