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Climate change during the last glacial period on the southeast margin of Badain Jaran Desert, Northwest China

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Journal of Mountain Science 2019年第10期16卷 2379-2388页

作者： FAN Xiao-lu zhang xin-yi TIAN Ming-zhong School of History Culture and Tourism Fuyang Normal UniversityFuyang 236037China School of the Earth Science and Resources China University of GeoscienceBeijing 100083China

Reconstruction of the desert paleoclimate is important to understand the mechanisms that triggered and/or enhanced climate *** optically stimulated luminescence(OSL)dating,grain size,magnetic susceptibility,X-ray powder diffraction(XRD)and geochemical indicators,we provide a welldated record of a sedimentary outcrop on the southeast margin of the Bardain Jaran Desert,Northwest China,during the last glacial *** Qz-OSL ages are obtained,41.0±3.4 ka,54.7±4.4 ka,59.5±5.0 ka and 66.8±5.8 ka,corresponding to the depths of 35 cm,70 cm,150 cm and 200 cm *** like grain size,clay content,magnetic susceptibility,XRD and geochemical index(***,Ba,Sr/Ca)jointly indicate abrupt climate changes at the depth of 35 cm(age,ca.41.0 ka)and200 cm(age,ca.67 ka).Namely,the 280 cm sedimentary outcrop perfectly records a warm wet climate stage,corresponding to the late Marine Isotope Stages(MIS)4 to the early MIS ***,there is a trend of grain size increase after around 40ka BP,which is most likely a signal of wind strength *** research supports that enhancing Siberian High pressure system during the late MIS 3played a key role in NW East Asia climate evolution.

关键词： Last glacial period Bardain Jaran Desert Climate change Siberian High pressure system XRD

Pulse cleaning flow models and numerical computation of candle ceramic filters

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Journal of Environmental Sciences 2002年第2期14卷 210-215页

作者： Tian, Gui-shan Ma, Zhen-ji zhang, xin-yi Xu, Ting-xiang Dept. of Resource and Envrn. Eng. Zibo University Zibo 255091 China

Analytical and numerical computed models are developed for reverse pulse cleaning system of candle ceramic filters. A standard turbulent model is demonstrated suitably to the designing computation of reverse pulse cleaning system from the experimental and one dimensional computational result. The computed results can be used to guide the designing of reverse pulse cleaning system, which is optimum Venturi geometry. From the computed results, the general conclusions and the designing methods are obtained.

关键词： candle ceramic filters reverse pulse cleaning face velocity numerical computed models pressure difference

Topological Aspects of Superconductors at Dual Point

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Communications in Theoretical Physics 2008年第6期49卷 1627-1630页

作者： REN Ji-Rong XU Dong-Hui zhang xin-Hui DUAN yi-Shi Institute of Theoretical Physics Lanzhou University Lanzhou 730000 China

We study the properties of the Ginzburg-Landau model at the dual point for the superconductors. By making use of the U（1） gauge potential decomposition and the φ-mapping theory, we investigate the topological inner structure of the Bogomol＇nyi equations and deduce a modified decoupled Bogomol＇nyi equation with a nontrivial topological term, which is ignored in conventional model. We find that the nontrivial topological term is closely related to the N-vortex, which arises from the zero points of the complex scalar field, Furthermore, we establish a relationship between Ginzburg Landau free energy and the winding number.

关键词： dual point Bogomol'nyi equations vortex

Bear bile powder attenuates senecionine-induced hepatic sinusoidal obstruction syndrome in mice

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Chinese Journal of Natural Medicines 2022年第4期20卷 270-281页

作者： JIANG Kai-Yuan zhang yi YE Xuan-Ling XIONG Fen CHEN Yan JIA Xia-Li zhang yi-xin YANG Li XIONG Ai-Zhen WANG Zheng-Tao The MOE Key Laboratory for Standardization of Chinese Medicines and the SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines Institute of Chinese Materia MedicaShanghai University of Traditional Chinese MedicineShanghai 201203China Shanghai R&D Center for Standardization of Traditional Chinese Medicines Shanghai 201203China Institute of Interdisciplinary Integrative Medicine Research Shanghai University of Traditional Chinese MedicineShanghai 201203China

Hepatic sinusoidal obstruction syndrome(HSOS)via exposure to pyrrolizidine alkaloids(PAs)is with high mortality and there is no effective treatment in *** bile powder(BBP)is a famous traditional animal drug for curing a variety of hepatobiliary diseases such as cholestasis,inflammation,and ***,we aim to evaluate the protective effect of BBP against HSOS induced by senecionine,a highly hepatotoxic PA *** results showed that BBP treatment protected mice from senecionine-induced HSOS dose-dependently,which was evident by improved liver histology including reduced infiltration of inflammatory cells and collagen positive cells,alleviated intrahepatic hemorrhage and hepatic sinusoidal endothelial cells,as well as decreased conventional serum liver function *** addition,BBP treatment lowered matrix metalloproteinase 9 and pyrrole-protein adducts,two well-known markers positively associated with the severity of PA-induced *** investigation showed that BBP treatment prevents the development of liver fibrosis by decreasing transforming growth factor beta and downstream fibrotic *** treatment also alleviated senecionine-induced liver inflammation and lowered the pro-inflammatory cytokines,in which taurours-odeoxycholic acid played an important ***’s more,BBP treatment also decreased the accumulation of hydrophobic bile acids,such as cholic acid,taurocholic acid,glycocholic acid,as *** concluded that BBP attenuates senecionine-induced HSOS in mice by repairing the bile acids homeostasis,preventing liver fibrosis,and alleviating liver *** present study helps to pave the way to therapeutic approaches of the treatment of PA-induced liver injury in clinics.

关键词： Hepatic sinusoidal obstruction syndrome Pyrrolizidine alkaloids Bear bile powder Liver disease Bile acids

Adsorption of Sm on C_(60) Film

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Chinese Physics Letters 1996年第1期13卷 65-68页

作者： PAN Hai-bin XU Shi-hong XU Chang-shan LU Er-dong XIA An-dong zhang Guo-shang XU Peng-shou zhang xin-yi Changchun Institute of Physics Academia SinicaChangchun 130021 National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029 Structure Research Laboratory University of Science and Technology of ChinaHefei 230026

Using photoemission spectroscopy,we have studied the adsorption of Sin on C_(60) *** tbe first stage of Sm adsorption,the C_(60) valence band shifts to the high binding energy *** maximum shift is about 0.4 *** the meantime,there appears a new structure at the upper side of the highest occupied molecule orbit(HOMO)band,which comes from the hybrid of the Sm 4f^(5) state and C_(60) HOMO *** Sm coverage increases the Sm electron is in a kind of Sm^(2+) state due to the forming of Sm cluster on the surface.

关键词： surface. film. adsorption

XAFS applications in semiconductors

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Nuclear Science and Techniques 2006年第6期17卷 370-388页

作者： WEI Shi-Qiang SUN Zhi-Hu PAN Zhi-Yun zhang xin-yi YAN Wen-Sheng ZHONG Wen-Jie National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China Department of Physics Surface Physics Laboratory （National Key laboratory） and Synchrotron Radiation Research Center Fudan University Shanghai 200433. China

X-ray absorption fine structure (XAFS) has experienced a rapid development in the last three decades and has proven to be a powerful structural characterization technique nowadays. In this review, the XAFS basic principles including the theory, the data analysis, and the experiments have been introduced in detail. To show its strength as a local structure probe, the XAFS applications in semiconductors are summarized comprehensively, that is, thin films, quantum wells and dots, dilute magnetic semiconductors, and so on. In addition, certain new XAFS-related techniques, such as in-situ XAFS, micro-XAFS, and time-resolved XAFS are also shown.

关键词： XAFS应用半导体 X射线吸收基本原理

Studies of the Gd Overlayer on Cr by Synchrotron Radiation Photoemission

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Chinese Physics Letters 1997年第7期14卷 553-556页

作者： zhang Fa-pei XU Peng-shou XU Shi-hong LU Er-dong YU Xiao-jiang zhang xin-yi National Synchrotron Radiation Laboratory University of Science and Techology of ChinaHefei 230029

The formation of Gd/Cr interface,the growth mechanism and electronic structure of Gd over-layers were investigated by synchrotron radiation *** is shown that Gd adatoms interact with the Cr substrate weakly.A lower deposition rate of the Gd overlayer(l.0Å/min)favors the smooth growth of Gd/Cr ***,higher deposition rate(6.0Å/min)leads to the cluster growth of the Gd overlayer and the presence of a“two-peak”feature of Gd 4f *** correlate this feature with the different coordination number of surface atoms derived from cluster-induced surface roughness.

关键词： cluster roughness surface

Research on Thermophysical Measurement Technology

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科技视界 2017年第3期 205-206页

作者： zhang xin-yi FENG Shou-ling School of Mechanical and Electrical Engineering Qingdao University

With the development of measurement technology,the basics and importance of thermophysical measurements are becoming more and more *** article is the review of the development of thermophysical measurement technology ... 详细信息

关键词：测量技术热物理测量技术创新发展现状

Energy Transfer in Cubic PbF_(2):Gd Crystals

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Chinese Physics Letters 2001年第6期18卷 829-830页

作者： zhang Guo-Bin SHI Jun-Yan zhang Zeng-Ming HAN Zheng-Fu SHI Chao-Shu zhang xin-yi G.Zimmerer M.Kirm SHEN Ding-Zhong National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230026 Department of Astronomy and Applied Physics University of Science and Technology of ChinaHefei 230026 II Institut für Experimental Physik der Universität Hamburg 22607 HamburgGermany Shanghai Institute of Ceramic Chinese Academy of SciencesShanghai 200050

The emission and excitation spectra of cubic PbF_(2):Gd were *** with pure crystals,the emissions from Gd^(3+) were observed upon cation exciton excitation in lattices,while the emission from intrinsic self-trapped ex... 详细信息

关键词： excitation cubic pure