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    Wyświetlanie 1-20 z 20
    Tytuł:
    Valence and Core-Valence Effects in N-Like Kr, Rb and Sr Ions
    Autorzy:
    Hao, L.
    Feng, H.
    Kang, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/1398681.pdf
    Data publikacji:
    2015-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    31.30.Gs
    32.30.-r
    Opis:
    Energy levels, wavelengths, transition rates and line strengths are reported for the $2s^2$ $2p^3-2s2p^{4}$ transition array in Kr(XXX), Rb(XXXI) and Sr(XXXII). Wave functions were determined using the multiconfiguration Dirac-Fock method with account for valence and core-valence correlation effects. The present results are presented and compared with experimental data and with values from other calculations. The calculated values including core-valence correlation are in good agreement with other available theoretical and experimental values, and therefore can be used for the further astrophysical investigations.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 3; 693-700
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of aluminum phosphide levels in waste fumigants from food shipments following simple immersion treatment
    Autorzy:
    Wu, G.
    Chen, T.
    Jia, Y.
    Shen, D.
    Feng, H.
    Long, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/207891.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    aluminum phosphide
    AIP
    waste fumigants
    fosforek glinu
    odpady fumigantów
    Opis:
    Increasing concentrations of aluminum phosphide (AlP) in waste fumigants and residues pose a serious threat to human health. This study focused on the effectiveness of the widely used simple immersion treatment for waste fumigants from shipments, which usually have a higher concentration of residual AlP. A field survey of an operational process was conducted followed by a quantitative analysis of the immersion treatment's hydrolytic effect on AlP. Further investigation on the safety of waste fumigants after the immersion treatment was conducted. It was found that the AlP concentration in the waste fumigant varied significantly with the sampling date, ranging from 12.93 +/- 0.67 wt. % to 29.50 +/- 1.18 wt. %. Simple immersion treatment could reduce the concentration of residual AlP in waste fumigants but the hydrolytic effect varied largely ranging from 19.5% to 31.9%. The concentration of residual AlP remained high (9.1-20.1 wt. %) after the immersion treatment. About 3.2-15.2 wt. % of AlP remained in the samples, following an additional 40 days of natural air-drying when phosphine gas release was not detected. The study indicates that conventional simple immersion treatment cannot ensure the complete hydrolysis of AlP from waste fumigants of shipments.
    Źródło:
    Environment Protection Engineering; 2018, 44, 1; 19-27
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Properties of New York/New Jersey Harbor Sediments
    Autorzy:
    Jones, K. W.
    Feng, H.
    Stern, E. A.
    Neuhäusler, U.
    Osán, J.
    Marinkovic, N.
    Song, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2044657.pdf
    Data publikacji:
    2006-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    89.60.-k
    89.20.-a
    Opis:
    Sediments found in waterways around the world may contain toxic compounds of anthropogenic origin that can harm the environment and human health. As a result, it is often necessary to remove them and find disposal methods that are environmentally and economically acceptable. Here, we report on results obtained in an experimental program to characterize the nature of the sediment contamination. The objective was to gain a better understanding of the properties of the sediments to develop better methods for understanding the fate and transport of the contaminants and for improving methods for their removal from the sediments. Our investigations made use of X-ray facilities at the Brookhaven National Synchrotron Light Source and the European Synchrotron Radiation Facility at Grenoble, France. The experiments included: measurements of the microstructure of the sediments using computed microtomography, X-ray absorption, and fluorescence microscopy with resolutions as low as 0.2 micrometers to obtain information on the relationships of organic and mineral components of the sediments and on the distribution of contaminants on the surfaces of the sediment grains, investigation of functional groups of chemical compounds using X-ray absorption near-edge spectroscopy and Fourier transform infrared spectroscopy. Scanning electron microscopy and electron probe measurements were made to ascertain the morphology of the sediment surfaces and the distribution of metals on individual sediment grains.
    Źródło:
    Acta Physica Polonica A; 2006, 109, 3; 279-286
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Common mycelium networks with Paraglomus occultum induce better plant growth and signal substance changes between trifoliate orange seedlings
    Autorzy:
    Zhang, Y.-C.
    Xie, M.-M.
    Feng, H.-D.
    Zhou, M.
    Zhang, Z.Z.
    Liu, C.-Y.
    Wu, Q.-S.
    Powiązania:
    https://bibliotekanauki.pl/articles/11877054.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Opis:
    Mycorrhizal mycelium can simultaneously colonize two and more neighboring plants to form common mycelium network (CMNs), whereas the information regarding CMN effects on endogenous signal substances is limited. In this study, a rootbox was separated by 37- or 0.45-μm mesh to establish donor chamber (the presence of roots and hyphae) and receptor (hyphae presented or not, free of roots) chamber, where an arbuscular mycorrhizal (AM) fungus Paraglomus occultum was inoculated into trifoliate orange seedlings of donor chamber to illustrate the underground communications of signal substances by CMNs. Mycorrhizal colonization resulted in better plant growth performance and greater root morphology in donor and receptor plants. AM inoculation increased significantly the root nitric oxide (NO) and calmodulin (CaM) levels of donor plants, regardless of 37- and 0.45-μm mesh, and subsequent CMNs induced higher root NO and CaM levels in receptor plants. Mycorrhizal colonization did not produce significant changes in root zeatin riboside (ZR) levels of donor plants, but CMN hyphae modulated lower root ZR levels of receptor plants. Mycorrhizal inoculation and subsequent CMN hyphae induced lower root gibberellin levels of donor and receptor plants, and only CMN hyphae produced lower root methyl jasmonate concentrations of receptor plants. Our results first reveal the underground communication of CaM, NO, and ZR by CMNs with P. occultum between trifoliate orange seedlings.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 6; 95-104
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Recovery mechanisms of sericite in microcrystalline graphite flotation
    Autorzy:
    Li, H.
    Ou, L.
    Feng, Q.
    Chang, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/110055.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    microcrystalline graphite
    sericite
    flotation
    entrainment
    entrapment
    Opis:
    Sericite is the main contaminant of concentrate in commercial microcrystalline graphite ore flotation. It was necessary to identify its recovery mechanisms so that the appropriate solution can be selected. In this study, the influence of sericite on flotation selectivity of microcrystalline graphite ore and its recovery mechanisms were investigated. Artificial mixtures flotation test suggested that sericite seriously reported into concentrate leading to poor flotation selectivity of microcrystalline graphite ore. However, the aggregation/dispersion behavior of artificial mixtures indicated that a large repulsive energy existed between sericite and microcrystalline graphite particles at pH 7.4, and sericite was not likely to report into graphite concentrate by slime coating. The results obtained from contact angle measurements and a technique of Warren showed that the floated sericite reached the froth via a combination of both entrainment and entrapment mechanisms, not via true flotation.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2015, 51, 2; 387-400
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of permeability of glass-sand soil
    Badanie przepuszczalności gleby piaszczysto-szklistej
    Autorzy:
    Wang, F. C.
    Feng, X. N.
    Gong, H.
    Zhao, H. Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/231018.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gleba piaszczysto-szklista
    współczynnik przepuszczalności
    proporcje
    mieszanie szkła
    stopień konsolidacji
    glass-sand soil
    permeability coefficient
    proportions
    glass mixing
    consolidation degree
    Opis:
    The drainage consolidation method has been efficiently used to deal with soft ground improvement. Nowadays, it has been suggested to use a new sand soil which is a composite of sand and recycled glass waste. The permeability performance of glass-sand soil was explored to judge the feasibility of glass-sand soil backfilled in the drainage consolidation of sand-drained ground. For comparison purposes, different mix proportions of recycled glass waste, fineness modulus, and glass particle size were analyzed to certify the impact on the permeability coefficient and the degree of consolidation. The numerical results show that adding a proper amount of recycled glass waste could promote the permeability performance of glass-sand soil, and the glasssand soil drain could be consolidated more quickly than a sand drain. Experiments showed that glass-sand soil with the a 20% mix of recycled glass waste reveals the optimum performance of permeability.
    W pracy omówiono nową mieszaninę gleby piaszczystej, która zawiera piasek i odpady pochodzące z recyklingu szkła. Skupiono się na wskaźniku przepuszczalności gleby piaszczysto-szklistej, aby ocenić wykonalność gleby piaszczystoszklistej w konsolidacji drenażu gruntu drenowanego piaskiem. Dla celów porównawczych przeprowadzono analizę różnych ilości zmieszanych odpadów pochodzących z recyklingu szkła, wskaźnika miałkości oraz wielkości cząstek szkła, aby potwierdzić wpływ na współczynnik przepuszczalności i stopień konsolidacji. Można przewidzieć, że dobra przepuszczalność części gleby zastąpionej szkłem w odpływie może przyspieszyć konsolidację drenażu fundamentu. Opracowano próbkę piasku przy użyciu piasku naturalnego o jednorodnym gatunku, z maksymalną wielkością nominalną wynoszącą 10 mm. W badaniu użyto pozostałości szkła laminowanego.
    Źródło:
    Archives of Civil Engineering; 2017, 63, 3; 175-190
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical Study of the Effect of Furrows on Biosonar Beamforming in Aselliscus Stoliczkanus Bat
    Autorzy:
    He, W.
    Feng, J.
    Gao, L.
    Zhang, Z.
    Lu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/176802.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Aselliscus Stoliczkanus bat
    furrows
    frequency-selective characteristics
    finite element method
    beam pattern
    Opis:
    The Aselliscus Stoliczkanus bat, studied here, has intricately shaped structures surrounding the nostrils. These structures are hypothesised to have influence on animals’ acoustic radiation patterns. Using micro-tomography scanning technique, a 3D digital model of the noseleaf is reconstructed and biosonar beam pattern is analysed using a finite element method based on the 3D noseleaf model. The present research focuses on the conspicuous furrows in noseleaf, and our analysis allows to conclude the followings: a) structural details in noseleaf of Aselliscus Stoliczkanus bat can produce acoustic effects even if it is not adjacent to the nostrils, b) the furrows possess frequency-selective characteristics, c) the furrows have the function to manipulate the direction and width of the outgoing ultrasound wave.
    Źródło:
    Archives of Acoustics; 2017, 42, 3; 395-399
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potato waste treatment by microbial fuel cell. Evaluation based on electricity generation, organic matter removal and microbial structure
    Autorzy:
    Du, H.
    Li, F.
    Huang, K.
    Li, W.
    Feng, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/206898.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    water treatment
    performance
    technology
    bacterial
    recovery
    sludge
    carbon
    microbial fuel cell
    COD
    potato waste
    uzdatnianie wody
    ChZT
    węgiel
    odpady ziemniaczane
    Opis:
    The performance of microbial fuel cell (MFC) in treating potato waste was evaluated using a two-chamber MFC supplied with potato liquid after mastication of market available fresh potato. Evaluation was conducted based on electricity generation, organic matter removal (CODCr, DOC and volatile fatty acids (VFAs)), and microbial structure on the anode and in the anodic solution of the reactor. Current density exhibited a trend that followed the concentration changes of organic matter in the solution, with its highest value being observed as 208 mA/m2. Effective removal of organic matter was also observed. By the end of the experiment, the removal for total COD reached about 84%. Bacterial structure analysis based on PCR, DGGE and sequencing indicated that more species were developed in the anodic solution than on the anode, with Proteobacteria, Firmicutes and Bacteroides being dominant. Geobacter, a well reported exoelectrogenic species, was found more predominant on the anode than in the anodic solution. The results thus indicated that simultaneous stabilization and electricity generation could be achieved when potato waste is treated in MFC.
    Źródło:
    Environment Protection Engineering; 2017, 43, 1; 5-18
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorption mechanism of sodium oleate on titanium dioxide coated sensor surface using quartz crystal microbalance with dissipation
    Autorzy:
    Fan, G.
    Liu, J.
    Cao, Y.
    Feng, L.
    Xu, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/110014.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    QCM-D
    TiO2 coated sensor surface
    sodium oleate
    adsorption mechanism
    Opis:
    Quartz Crystal Microbalance with Dissipation (QCM-D) was firstly applied to investigate the adsorption mechanism of sodium oleate on TiO2 coated sensor surface. The effects of pH value, sodium oleate concentration, and temperature on TiO2 coated sensor surface were evaluated systematically using the QCM-D technique. Zeta potential, surface tension, adsorption isotherms, and adsorption thermodynamics were employed to characterize the adsorption process. The results showed the advantages of QCM-D on the investigation of the adsorption process. Additionally, the electrostatic equilibrium adsorption data was well matched to the Langmuir isotherm. Based on the thermodynamic analysis, adsorption was a spontaneous and endothermic physisorption process.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2016, 52, 2; 597-608
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mixing characteristics of the subarctic front in the Kuroshio-Oyashio confluence region
    Autorzy:
    Ke-Lan, Z.
    Xi, C.
    Ke-Feng, M.
    Dong, H.
    Sen, H.
    Yan, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/49009.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Subarctic Front
    Kuroshio-Oyashio confluence region
    sea surface temperature
    salinity
    topography
    geostrophic flow
    thermohaline
    structural characteristics
    turbulent mixing
    Źródło:
    Oceanologia; 2019, 61, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Eddy current density asymmetric distribution of damper bars in bulb tubular turbine generator
    Autorzy:
    Qiu, H.
    Fan, X.
    Yi, R.
    Feng, J.
    Wu, J.
    YANG, C.
    ZHAO, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/140467.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    damper bars
    bulb tubular turbine generator
    electromagnetic field
    eddy current
    Opis:
    The major reasons that cause the damage of damper bars in the leeward side are found in this paper. It provides a route for the structure optimization design of a hydro generator. Firstly, capacity of a 24 MW bulb tubular turbine generator is taken as an example in this paper. The transient electromagnetic field model is established, and the correctness of the model is verified by the comparison of experimental results and simulation data. Secondly, when the generator is operated at rated condition, the eddy current density distributions of damper bars are studied. And the asymmetric phenomenon of the eddy current density on damper bars is discovered. The change laws of the eddy currents in damper bars are determined through further analysis. Thirdly, through the study of eddy current distributions under different conditions, it is confirmed that the stator slots and armature reaction are the main factors to affect the asymmetric distribution of the eddy current in damper bars. Finally, the studies of the magnetic density distribution and theoretical analysis revealed the asymmetric distribution mechanism of eddy current density.
    Źródło:
    Archives of Electrical Engineering; 2017, 66, 3; 571-581
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A coumarin-based fluorescent probe for specific and rapid detection of fluoride ions
    Autorzy:
    Xin, Z.-H.
    Meng, Y.-L.
    Wu, Y.-H.
    Feng, Z.-K.
    Kang, Y.-F.
    Powiązania:
    https://bibliotekanauki.pl/articles/778907.pdf
    Data publikacji:
    2018
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    Fluorion
    Fluorescence
    Coumarin
    Probe
    Bioimaging
    Opis:
    A simple and coumarin-based fluorescence probe has been designed and synthesized with silyl group as recognition group of fluoride ions (F−) in this study. The results showed that the fluorescence intensity of the probe displayed prominent enhancement with addition of F− at 445 nm with incubation of 1 min. There was an excellent linear relationship between fluorescence intensity and fluoride concentration from 0 to 30 μM (0~0.57 ppm), which offered the important condition for the quantitative analysis. In addition, the highly selective response to fluorion, the low detection limit with 28 nM (0.532 ppb), low toxicity and bioimaging afforded an advantage for practical application and detecting fluoride in biological systerms.
    Źródło:
    Polish Journal of Chemical Technology; 2018, 20, 4; 1-5
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Lujiatun-like dinosaurian assemblage from the Jehol Biota of Ningcheng, Inner Mongolia, Northeast China
    Autorzy:
    Zhang, H.
    Yu, D.
    Feng, Y.
    Pei, R.
    Zhou, C.-F.
    Powiązania:
    https://bibliotekanauki.pl/articles/31341389.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    dinosaur
    Jehol Biota
    Ningcheng county
    Yixian Formation
    fossil
    fauna composition
    Early Cretaceous
    Cretaceous
    Inner Mongolia
    China
    Źródło:
    Acta Palaeontologica Polonica; 2022, 67, 3; 617-621
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of future climate scenarios and their impact on agriculture in eastern Arkansas, United States
    Analiza scenariuszy klimatycznych i ich wpływ na rolnictwo we wschodniej części Arkansas
    Autorzy:
    Magugu, J. W.
    Feng, S.
    Huang, Q.
    Zhang, Y.
    West, G. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/292796.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    agriculture
    climate change
    climate scenarios
    precipitation
    temperature
    opady
    rolnictwo
    scenariusze klimatyczne
    temperatura
    zmiany klimatu
    Opis:
    Impact of climate change on crop growth is dynamic and difficult to quantify due to heterogeneity of the associated effects and their interactions within the Earth system. The main objective of this study is to establish how future climate change might affect agriculture, through an assessment of temperature and precipitation driven parameters. These include percentage number of rainy days with extreme precipitation, percentage of extreme precipitation relative to wet days, first fall frost days, last spring frost days, growing degree days, growing season length and the total precipitation. Results show modest increase in total precipitation with a slight increase in extreme precipitation, representing up to 2.2% increase by 2060 under representative concentration pathway (RCP 8.5) scenario. There would be late first fall frost days, early last spring frost days and increased growing season length by up to 2 weeks in 2060. The growing degree days are projected to increase under all scenarios for all crops, with cotton showing the largest increase of up to 37% relative to the baseline period.
    Wpływ zmian klimatu na wzrost upraw jest dynamiczny i trudny do ilościowej oceny z powodu różnorodności powiązanych efektów i ich interakcji w całym systemie Ziemi. Głównym celem badań prezentowanych w niniejszej pracy było ustalenie, jak zmiany klimatu w przyszłości mogą wpłynąć na rolnictwo, na podstawie oceny parametrów związanych z temperaturą i opadami. Analizowano następujące parametry: udział (w %) dni deszczowych z ekstremalnym opadem, udział ekstremalnych opadów w stosunku do opadów ogółem, pierwsze jesienne dni z mrozem, ostatnie wiosenne dni z mrozem, stopniodni w sezonie wegetacyjnym, długość sezonu wegetacyjnego, i sumę opadów. Wyniki wykazują umiarkowany wzrost całkowitych opadów i niewielki wzrost opadów ekstremalnych – do 2,2% do roku 2060 wg scenariusza Representative Concentration Pathway (RCP 8.5). W 2060 roku pierwsze jesienne dni z mrozem wystąpią później, ostatnie wiosenne dni z mrozem wystąpią wcześniej, a sezon wegetacyjny wydłuży się o ok. 2 tygodnie. Zgodnie ze wszystkimi scenariuszami przewiduje się, że liczba stopniodni w sezonie wegetacyjnym zwiększy się dla wszystkich upraw, a największy przyrost (maksymalnie o 37%) w stosunku do okresu bazowego prognozuje się dla upraw bawełny.
    Źródło:
    Journal of Water and Land Development; 2018, 37; 97-112
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Correlation Between Superheated Liquid Fragility And Onset Temperature Of Crystallization For Al-Based Amorphous Alloys
    Korelacja między krytycznymi parametrami cieczy i temperaturą początku krystalizacji dla amorficznych stopów na bazie Al
    Autorzy:
    Guo, J.
    Hu, X.
    Liu, J.
    Feng, T.
    Yoon, E. Y.
    Kim, H. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/353707.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    superheated liquid fragility
    onset temperature of crystallization
    thermal stability
    krytyczny parametr cieczy
    temperatura początku krystalizacji
    stabilność termiczna
    Opis:
    Amorphous alloys or metallic glasses have attracted significant interest in the materials science and engineering communities due to their unique physical, mechanical, and chemical properties. The viscous flow of amorphous alloys exhibiting high strain rate sensitivity and homogeneous deformation is considered to be an important characteristic in thermoplastic forming processes performed within the supercooled liquid region because it allows superplastic-like deformation behavior. Here, the correlation between the superheated liquid fragility, and the onset temperature of crystallization for Al-based alloys, is investigated. The activation energy for viscous flow of the liquid is also investigated. There is a negative correlation between the parameter of superheated liquid fragility and the onset temperature of crystallization in the same Al-based alloy system. The activation energy decreases as the onset temperature of crystallization increases. This indicates that the stability of a superheated liquid can affect the thermal stability of the amorphous alloy. It also means that a liquid with a large superheated liquid fragility, when rapidly solidified, forms an amorphous alloy with a low thermal stability.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1543-1546
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Serological surveillance of avian influenza virus and canine distemper virus in captive Siberian Tigers in Northeastern China
    Autorzy:
    Wang, K.
    Wang, H.
    Feng, N.
    Zhao, Y.
    Gao, Y.
    Hu, G.
    Xia, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087698.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    influenza A virus
    canine distemper virus
    serological
    Siberian Tiger
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 3; 491-495
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of matrine on reducing damage to bovine mammary epithelial cells induced by Staphylococcus aureus alpha-hemolysin
    Autorzy:
    Feng, F.
    Ma, W.W.
    Luo, H.X.
    Guan, C.P.
    Zhou, X.Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087720.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    α-hemolysin
    BMECs
    matrine
    cell damage
    Źródło:
    Polish Journal of Veterinary Sciences; 2018, 21, 2; 409-413
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stability control of propeller Autonomous Underwater Vehicle based on combined sections method
    Autorzy:
    Qi, D.
    Feng, J.
    Liu, A.
    Hu, J.
    Xu, H.
    Li, Y.
    Ashraf, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/259119.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    propeller AUV
    dynamic model
    stability control
    simulation
    Opis:
    Learning from the motion principle of quadrotor, a symmetric propeller AUV, which has small size and low velocity is designed. Compared with the AUV equipped with rudders, it has better maneuverability and manipulation at low velocity. According to the Newton-Euler method, the 6 DOF kinematic model and dynamic model of the propeller AUV are established. A stability controller that consists of 3 different PID controllers is designed. It makes the depth and attitude angle as trigger conditions, and the relevant controller is chosen in different moving process. The simulation experiments simulate ideal motion state and disturbed motion state, and experiments results show that the stability controller based on combined sections method can make the best of mature technology of PID, and meet the control requirements in different stages. It has a higher respond speed and accuracy, improving the stability of the propeller AUV under the disturbance of complex ocean currents.
    Źródło:
    Polish Maritime Research; 2015, S 1; 157-162
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    TaqMan real-time PCR for detecting bovine viral diarrhea virus
    Autorzy:
    Liang, H.
    Geng, J.
    Bai, S.
    Aimuguri, A.
    Gong, Z.
    Feng, R.
    Shen, X.
    Wei, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087557.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    bovine viral diarrhea virus
    quantitative real time PCR
    TaqMan probe
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 405-413
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Processing Techniques on Mechanical Properties and Impact Initiation of an Al-PTFE Reactive Material
    Autorzy:
    Feng, B.
    Fang, X.
    Li, Y.-C.
    Wu, S.-Z.
    Mao, Y.-M.
    Wang, H.-X.
    Powiązania:
    https://bibliotekanauki.pl/articles/358654.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    Al-PTFE
    reactive materials
    quasi-static compression
    impact initiation
    Opis:
    Reactive materials (RMs) or impact-initiated materials have received much attention as a class of energetic materials in recent years. To assess the influence of processing techniques on mechanical properties and impact initiation behaviors of an Al-PTFE reactive material, quasi -static compression tests and drop-weight tests were performed. Scanning electron microscopy (SEM) was used to identify the characteristics of the interior microstructures of the Al-PTFE samples. A sintering process was found to transform Al-PTFE from a brittle to a ductile material with an increased elasticity modulus (from 108-160 MPa to 256-336 MPa) and yield stress (from 12-16 MPa to 19-20 MPa). Increasing the molding pressure from 36 MPa to 182 MPa increased the elastic modulus of all Al-PTFE samples and also the yield stress of unsintered ones. Unsintered samples in general required less energy to initiate than sintered ones. As the molding pressure increased, the impact initiation energy for sintered Al-PTFE fell from 96 J to 68 J, whereas the initiation energy for unsintered Al-PTFE rose from 68 J to 85 J. PTFE nanofiber networks observed in sintered samples formed under the higher molding pressures could contribute to the opposite trends observed in the impact initiation energy of unsintered and sintered Al-PTFE samples.
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 4; 989-1004
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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