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物理学报 1995年第3期44卷 460-470页

作者：曾朝阳丁世英邱里姚希贤杨宏川傅耀先蔡传兵工程兵工程学院物理教研室南京210007 南京大学物理系南京210008 中国科学院上海冶金研究所上海200050

在不同温度和磁场下测量了熔融织构YBa_2Cu_3O_y块材的磁衰减和磁滞回线.在20K 详细信息

在不同温度和磁场下测量了熔融织构YBa_2Cu_3O_y块材的磁衰减和磁滞回线.在20K

关键词： YBCO 熔融织物磁性质钉扎机制

CuCl-catalyzed Oxidative N-Demethylation of Arylamines with tButyl Hydroperoxide

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Chemical Research in Chinese Universities 2009年第6期25卷 861-865页

作者： LIAO Qian xi Chan-juan Key Laboratory of Bioorganic Phosphorus Chemistry ＆ Chemical Biology Ministry of Education Department of Chemistry Tsinghua University Beoing 100084 P. R. China

CuCl-catalyzed oxidative N-demethylation of arylamines proceeded in the presence of tert-butyl hydroperoxide. The one-electron transfer route of oxidative N-demethylation competed favorably with the H-atom abstraction... 详细信息

关键词： Arylamine Cuprous chloride Catalytic oxidation N-Demethylation tert-Butyl hydroperoxide

Tea polyphenols inhibit expressions of iNOS and TNF-a and prevent lipopolysaccharide-induced liver injury in rats

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Hepatobiliary & Pancreatic Diseases International 2006年第2期5卷 262-267页

作者： Guang-Jin Yuan, Zuo-Jiong Gong, xiao-Mei Sun, Shi-Hua Zheng and xi Li department of Infectious Diseases, Renmin Hospital of Wuhan University, Wuhan 430060, china

BACKGROUND: Tea polyphenols have been shown to protect against carbon tetrachloride ( CCl4) -induced liver injury, liver fibrosis, hepatic ischemia-reperfusion injury. In this study, we examined the effect of tea polyphenols on lipopolysaccharide ( LPS ) -induced liver injury, and explored its mechanisms. METHODS: Sprague-Dawley rats received tea polyphenols (100 mg · kg-1·d-1) or vehicle (water) intragastrically by gavage for 14 days, followed by LPS (5 mg/kg) or saline injection intraperitoneally. Liver injury was assessed by biochemical assay and pathological analysis. Serum tumor necrosis factor-α (TNF-α) levels and liver malondialdehyde (MOA) contents were determined. Inducible nitric oxide synthase (iNOS) protein and TNF-α, iNOS and en-dothelial nitric oxide synthase (eNOS) mRNA expressions in the liver were detected by immunohistochemistry and reverse transcriptase-polymerase chain reaction (RT-PCR), respectively. RESULTS: Administration of LPS resulted in liver injury in rats, evidenced by elevated activities of serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST), hepatocellular necrosis, and neutrophil infiltration in the liver. These responses were associated with increased serum TNF-α levels, induced iNOS protein, expressions of TNF-α, iNOS mRNA in the liver and elevated lipid peroxidation at 90 minutes or 6 hours after LPS injection. Pretreatment with tea polyphenols attenuated LPS-induced liver injury, and blunted the rises of serum TNF-α levels and lipid peroxidation and the induction of expressions of TNF-α, iNOS in the liver. CONCLUSION: Tea polyphenols prevent LPS-induced liver injury, and the mechanisms may involve the reduction of serum TNF-α levels and lipid peroxidation and the suppression of TNF-α, iNOS expressions in the liver.

关键词： tea polyphenols lipopolysaccharide-induced liver injury inducible nitric oxide synthase tumor necrosis factor-α

《欧洲语言共同参考框架》(增补版)文本阅读能力体系的解读与重构

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华文教学与研究 2024年第1期 1-9页

作者：姜丽萍杨曦王立北京语言大学国际中文教育研究院北京100083 国家开放大学国际部北京100039

《欧洲语言共同参考框架:学习、教学、评估》自2001年发布以来,对世界范围内的语言教学产生了广泛而深刻的影响。2020年发布的增补版向使用者呈现了更适应当代语言教学的语言能力体系、语言能力等级和语言能力量表,其中提出的全新的文... 详细信息

《欧洲语言共同参考框架:学习、教学、评估》自2001年发布以来,对世界范围内的语言教学产生了广泛而深刻的影响。2020年发布的增补版向使用者呈现了更适应当代语言教学的语言能力体系、语言能力等级和语言能力量表,其中提出的全新的文本阅读能力体系,对阅读学习、阅读教学与评估具有重要指导意义。文章对该版文本阅读相关内容进行了梳理和解读,通过分析其优点和不足,尝试将该文本阅读能力体系重构为由两种视角、八大参项、228项指标构成的三级评估体系。两种视角为文本内容视角和学习者能力视角,分别对应文本类型、话题类型、文本可读性、语言庄典度,和知识能力、策略能力、理解能力、熟练程度等八大参项,每个参项又可细化为若干具体指标,以期对阅读教学、学习以及阅读能力评估产生积极的引导作用。

关键词：《欧框》(增补版) 文本阅读阅读能力能力标准标准重构

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Study on the Influencing Mechanism of Relational Mechanisms on Firms’ Innovation Performance——Intermediary Effect of Relationship Learning

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Study on the Influencing Mechanism of Relational Mechanisms ...

Relativistic density functional investigations on properties of Irn （n=2-13） clusters

2011 International Conference on Management Science and Intelligent Control(ICMSIC 2011)

作者： Xudong PEI School of Economics and Management xi’an University of Technology xi’an Shiyou University 2 xi’an china Suicheng LI School of Economics and Management xi’an University of Technology xi’an china

Based on organizational learning, the influencing mechanism of relational mechanisms on firms’ innovation performance is explored. The results show that although relational mechanisms and innovation performance are significantly positive correlation, relational learning partially mediates the relationship between relational mechanisms and innovation performance. Absorptive capacity moderates the effect of relationship learning on innovation performance.

关键词： relational mechanisms relationship learning absorptive capacity innovation performance.

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Relativistic density functional investigations on properties...

Two-dimensional models of threshold voltage and subthreshold current for symmetrical double-material double-gate strained Si MOSFETs

中国化学会第九届全国量子化学学术会议

作者： Ping Guo,Zhao-Yu Ren, xiao-Yan Shi, Guang-Hou Wang Institute of Photonics & Photon-Technology, Northwest University, xi''an, 710069, china physics deparment, Northwest University, xi''an, 710069, china State Key Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, china

＜正＞Ir clusters with up to 13 atoms are studied systematically using ab initio relativistic density functional method with generalized gradient approximation. Prism and square bipyramid structural growth patterns are found in the low-lying geometries. The lowest-energy clusters adopt hollow prism structures up to 12, while Ir13 is an amorphous structure. For the lowest-energy iridium clusters, the size-dependences of the fragmentation energies and second order difference of energies

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Chinese physics B 2016年第3期25卷 440-444页

作者：辛艳辉袁胜刘明堂刘红侠袁合才 department of Information and engineering North China University of Water Resources and Electric Power Key Laboratory for Wide Band Gap Semiconductor Materials and Devices of Education School of Microelectronics Xidian University department of Mathematics and Information Science North China University of Water Resources and Electric Power

The two-dimensional models for symmetrical double-material double-gate （DM-DG） strained Si （s-Si） metal-oxide semiconductor field effect transistors （MOSFETs） are presented. The surface potential and the surface electric field ex- pressions have been obtained by solving Poisson＇s equation. The models of threshold voltage and subthreshold current are obtained based on the surface potential expression. The surface potential and the surface electric field are compared with those of single-material double-gate （SM-DG） MOSFETs. The effects of different device parameters on the threshold voltage and the subthreshold current are demonstrated. The analytical models give deep insight into the device parameters design. The analytical results obtained from the proposed models show good matching with the simulation results using DESSIS.

关键词： double-material double-gate MOSFET strained Si threshold voltage subthreshold current

UNC13A Gene Brings New Hope for ALS Disease-Modifying Drugs

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Neuroscience Bulletin 2022年第11期38卷 1431-1434页

作者： xi Chen Heling Chu Yi Dong department of Neurology National Center for Neurological DisordersHuashan HospitalFudan UniversityShanghai 200040China department of Gerontology Shanghai Jiao Tong University Afliated Sixth People’s HospitalShanghai 200233China

Amyotrophic lateral sclerosis(ALS)is an idiopathic and fatal neurodegenerative disorder leading to progressive muscle atrophy,dysarthria,dysphagia,and respiratory failure[1].More than 80 different drugs have been test... 详细信息

关键词： drugs respiratory atrophy

Detection and inactivation of allergens in soybeans:A brief review of recent research advances

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Grain & Oil Science and Technology 2021年第4期4卷 191-200页

作者： Lina Tokuna Mulalapele Jun xi College of Food Science and engineering Henan University of TechnologyZhengzhou 450001China Faculty of Agronomy Department of Animal ScienceUniversity of KikwitB.P.76D.R.C.Kikwit

In the last decade,soybean allergies have been on the increases to such an extent that they have now become a public health issue thus prompting more studies and researches on the *** allergenicity of soybean is attributed to its protein *** best way to prevent hypersensitive patients from ingesting allergenic compounds is to exclude such soybean allergens from their *** a result,it is essential to provide detailed and reliable knowledge of food ***,precise and reliable approaches for detecting soybean allergens found in various food products must be *** main way to reduce allergy risk is the identification of allergenic sites in food and their inactivation by various food-processing *** has been reported that food processing may lead to the modification of conformational structure of the protein or protein distortion that inhibit the binding of immunoglobulin E(Ig E)to epitopes on food allergens and also the mechanism of allergic *** processing technologies employed for inactivating allergenic epitopes used thermal and nonthermal ***,several detection methods including protein-based and DNA-based approaches using analytical techniques such as enzyme-linked immunosorbent assay(ELISA),enzyme allergosorbent test(EAST),radioallergosorbent test(RAST),lateral flow immunoassay(LFIA),immunoblotting,realtime polymerase chain reaction(PCR),mass spectrometry and biosensors have been improved for identifying and quantifying these *** research focused on allergenic proteins of soybean,the most modern approaches for detecting and quantifying these allergens,and finally,the various methods used to inactivate these proteins and their effects on soy allergenicity.

关键词： Soybean Soy allergens Detection Inactivation Allergenicity

Formulation of elastic multi-structures

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Science china(physics,Mechanics & Astronomy) 2009年第6期52卷 935-953页

作者： SUN BoHua1 & YE ZhiMing2 1 department of Mechanical engineering, Cape Peninsula University of Technology, P O Box 1906, Bellville 7535, Cape Town, South Africa 2 Shanghai University, Shanghai 200436, china department of Mechanical engineering Cape Peninsula University of Technology Cape Town South Africa Shanghai University Shanghai China

Based on the creative and groundbreaking work done by Feng and Shi, some further work has been carried out comprehensively by the first author on the formulation of elastic multi-structures. The main contribution of this paper can be summarized as follows: The work of Feng and Shi has been extended to an elastic multi-structures with nonlinear structural element: shell in both linear and nonlinear case. Three general combinations of multi-structures have been formulated, that is, Case 1: linear elements of 3-D body, 1-D bar/beam, 2-D plates and 2-D shell; Case 2: nonlinear elements of 3-D body, 1-D bar/beam, 2-D plates and 2-D shell; and Case 3: the linear-nonlinear mix problem of 3-D body (nonlinear), 1-D bar/beam (linear), 2-D plates (linear) and 2-D shell (linear). From the investigation, it has proved that the higher dimensional element will have a strong influence on the lower one with the inner linkage boundaries, and also proved that solution uniqueness of elastic multi-structures is different from a single 3-D body.

关键词： multi-structures elasticity bar/beam plates shells 3-D body linear nonlinear