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    Wyświetlanie 1-9 z 9
    Tytuł:
    Interaction of Au with GaSb and its Impact on the Formation of Ohmic Contacts
    Autorzy:
    Piotrowska, A.
    Kamińska, E.
    Piotrowski, T.
    Kasjaniuk, S.
    Guziewicz, M.
    Gierlotka, S.
    Lin, X. W.
    Liliental-Weber, Z.
    Washburn, J.
    Kwiatkowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1873078.pdf
    Data publikacji:
    1995-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.40.Ns
    Opis:
    Interfacial reactions between GaSb and Au were studied by Rutherford backscattering, X-ray diffraction, and cross-sectional transmission electron microscopy. Evaluation of the extent to which the GaSb substrate decomposes was of primary concern. The results give evidence that the reaction takes place even at temperatures as low as 180°C. High reactivity of gold towards GaSb revealed by this study demonstrates that Au-based metallization is not a good candidate for device quality ohmic contacts to GaSb-based devices.
    Źródło:
    Acta Physica Polonica A; 1995, 87, 2; 419-422
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Relationship Between Bake Hardening, Snoek-Köster and Dislocation-Enhanced Snoek Peaks in Coarse Grained Low Carbon Steel
    Autorzy:
    Lin, W.
    Zhao, S.
    Zhang, H.
    Jin, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/353663.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    low carbon steel
    ultra-low carbon bake-hardening (ULC-BH) steel
    bake hardening (BH)
    Snoek peak
    dislocation-enhanced Snoek peak
    Snoek-Köster peak
    internal friction
    Opis:
    In the present work, specimens prepared from coarse grained low carbon steel with different prestrains were baked and then, their bake hardening (BH) property and internal friction were determined. TEM was used to characterize the dislocation structure in BH treated samples. The measurements of internal friction in prestrained samples and baked samples were carried out using a multifunctional internal friction apparatus. The results indicate that, in coarse grained low carbon steel, the bake hardening properties (BH values) were negative, which were increased by increasing the prestrain from 2 to 5%, and then were decreased by increasing the prestrain from 5 to 10%. In the specimen with prestrain 5%, the BH value reached the maximum value and the height of Snoek-Köster peak was observed to be the maximum alike. With increasing the prestrain, both of the BH value and Snoek-Köster peak heights are similarly varied. It is concluded that Snoek-Köster and dislocation-enhanced Snoek peaks, caused by the interactions between interstitial solute carbon atoms and dislocations, can be used in further development of the bake hardening steels.
    Źródło:
    Archives of Metallurgy and Materials; 2016, 61, 3; 1723-1732
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Cranial anatomy of the iguanodontoid ornithopod Jinzhousaurus yangi from the Lower Cretaceous Yixian Formation of China
    Autorzy:
    Barrett, P M
    Butler, R.J.
    Xiao-Lin, W.
    Xing, X.
    Powiązania:
    https://bibliotekanauki.pl/articles/19937.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Paleobiologii PAN
    Tematy:
    Cretaceous
    Yixian Formation
    Dinosauria
    Jinzhousaurus yangi
    paleontology
    China
    cranial anatomy
    Ornithopoda
    ornithopod
    Liaoning Province
    iguanodontoid ornithopod
    Lower Cretaceous
    dinosaur
    Iguanodontia
    non-avian dinosaur
    Opis:
    The Yixian Formation (Lower Cretaceous) of Liaoning Province, China, is justifiably famous for its exceptionally preserved fauna, which includes a remarkable diversity of non−avian dinosaurs. Here, we provide the first detailed description of the cranial skeleton of the iguanodontian ornithopod Jinzhousaurus yangi. Many previously unrecorded features have been recognised, permitting a new and more robust diagnosis for this taxon, which is based on a suite of autapomorphic features. Jinzhousaurus and an unnamed sauropod represent the largest, but some of the least abundant, animals in the Jehol Biota, a situation that contrasts with many other Lower Cretaceous faunas in which large dinosaurs are common faunal components. This rarity may be due to either palaeoenvironmental constraints or taphonomic bias, although it is not possible to choose between these alternatives on the basis of current data.
    Źródło:
    Acta Palaeontologica Polonica; 2009, 54, 1; 35-48
    0567-7920
    Pojawia się w:
    Acta Palaeontologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    n-sided polygonal hybrid finite elements involving element boundary integrals only for anisotropic thermal analysis
    Autorzy:
    Cao, R. F.
    Zhao, X. J.
    Lin, W. Q.
    Wang, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/38597074.pdf
    Data publikacji:
    2020
    Wydawca:
    Instytut Podstawowych Problemów Techniki PAN
    Tematy:
    hybrid finite element
    polygon
    non-conforming mesh
    fundamental solution
    anisotropic material
    heat conduction
    Opis:
    As a combination of the traditional finite element method and boundary element method, the n-sided polygonal hybrid finite element method with fundamental solution kernels, named as HFS-FEM, is thoroughly studied in this work for two-dimensional heat conduction in fully anisotropic media. In this approach, the unknown temperature field within the polygon is represented by the linear combination of anisotropic fundamental solutions of problem to achieve the local satisfaction of the related governing equations, but not the specific boundary conditions and the continuity conditions across the element boundary. To tackle such a shortcoming, the frame temperature field is independently defined on the entire boundary of the polygonal element by means of the conventional one-dimensional shape function interpolation. Subsequently, by the hybrid functional with the assumed intra- and inter-element temperature fields, the stiffness equation can be obtained including the line integrals along the element boundary only, whose dimension is reduced by one compared to the domain integrals in the traditional finite elements. This means that the higher computing efficiency is expected. Moreover, any shaped polygonal elements can be constructed in a unified form with the same fundamental solution kernels, including convex and non-convex polygonal elements, to provide greater flexibility in meshing effort for complex geometries. Besides, the element boundary integrals endow the method higher versatility with a non-conforming mesh in the pre-processing stage of the analysis over the traditional FEM. No modification to the HFS-FEM formulation is needed for the non-conforming mesh and the element containing hanging nodes is treated normally as the one with more nodes. Finally, the accuracy, convergence, computing efficiency, stability of non-convex element, and straightforward treatment of non-conforming discretization are discussed for the present n-sided polygonal hybrid finite elements by a few applications in the context of anisotropic heat conduction.
    Źródło:
    Archives of Mechanics; 2020, 72, 2; 109-137
    0373-2029
    Pojawia się w:
    Archives of Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antioxidant activity and mechanism in flower of Hylocereus undatus (Haw.) Britt. et Rose
    Autorzy:
    Li, X.
    Gao, Y.
    Han, W.
    Lin, J.
    Hu, Q.
    Chen, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/19838.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Opis:
    Hylocereus undatus flower is commonly used as food or for medicinal purposes in south China. To study its antioxidant activity and mechanism we used antioxidant and chemical assays to compare two commercial samples from different locations (Shenjing, Qixing). The difference in antioxidant levels corresponded with differences in chemical content (including total phenolics, total flavonoids, kaempferol and quercetin) between Shenjing and Qixing. The antioxidant ability of H. undatus flower seems attributable to total phenolics (mainly total flavonoids). Kaempferol is one of the main bioactive components. H. undatus flower exerts its antioxidant effects through metal chelation and radical scavenging via hydrogen atom (H•) and electron (e) donation.
    Źródło:
    Acta Biologica Cracoviensia. Series Botanica; 2013, 55, 1
    0001-5296
    Pojawia się w:
    Acta Biologica Cracoviensia. Series Botanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new adaptation for in vitro co-culture of single porcine parthenogenetic embryos using feeder cells
    Autorzy:
    Zhang, L.
    Lin, Z.
    Hua, Z.
    Zheng, X.
    Xiao, H.
    Hua, W.
    Ren, H.
    Zhu, Z.
    Molenaar, A.
    Bi, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087368.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    feeder cells
    porcine
    embryos
    in vitro
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 4; 711-716
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Isolation and sequence analysis of the complete VP2 gene of canine parvovirus from Chinese domestic pets and determination of the pathogenesis of these circulating strains in beagles
    Autorzy:
    Chen, M.R.
    Guo, X.Y.
    Wang, Z.Y.
    Jiang, Y.T.
    Yuan, W.F.
    Xin, T.
    Hou, S.H.
    Song, T.Q.
    Lin, W.D.
    Zhu, H.F.
    Jia, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/2087542.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    canine parvovirus
    molecular epidemiology
    phylogenetic analysis
    pathogenesis
    Źródło:
    Polish Journal of Veterinary Sciences; 2019, 2; 287-296
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-9 z 9

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