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Moment tensor analysis of the acoustic emission source in the rock damage process

Progress in Natural Science:Materials International 2005年第7期15卷 609-613页

作者： YU Huaizhong, ZHU Qingyong, YIN Xiangchu and WANG Yucang ( State Key Laboratory of Earthquake Dynamics, Institute of Geology, china Earthquake Administration, Beijing 100029, china State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, china School of Mathematics and Computational Science, Zhongshan university, Guangzhou 510275, china center for analysis and Prediction, china Seismological Bureau, Beijing 100036, china Quakes, Department of Earth Science, university of Queensland, Brishbane, Austrialia) State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration Beijing 100029 China. State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China. School of Mathematics and Computational Science Zhongshan University Guangzhou 510275 China. center for analysis and Prediction China Seismological Bureau Beijing 100036 China. Quakes Department of Earth Science University of Queensland Brishbane Austrialia

To further investigate the mechanism of acoustic emission (AE) in the rock fracture experiment, moment tensor analysis was carried out. The AE sources characterized by crack sizes, orientations and fracture modes, are represented by a time-dependent moment tensor. Since the waveforms recorded by AE monitors correlate to the moment tensors, we prefer to select the P wave amplitude from the full-space Green's function of homogeneous and isotropic materials to determine the six independent components of the moment tensor. The moment tensor analysis was used to investigate the AE sources recorded in the experiment, and three types of micro-cracks were found, which are tensile mode, shear mode and mixture of the tensile and shear mode. In addition, the motion of micro-cracks was decided by eigenvectors of moment tensor. Results indicate that the moment tensor analysis may be used as a measurement to reflect the damage evolution of rock specimen.

关键词： moment tensor acoustic emission rock fracture.

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Phenyl iodonium bis(perfluoroalkanesulphonyl)-methide-dimethyl sulphoxide complex——Its formation and X-ray structure analysis

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Chinese Journal of Chemistry 1992年第5期10卷 458-463页

作者： ZHU, Shi-Zheng CHEN, Qing-Yun ZHU, Yu-Hua WU, Kuang Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 analysis and measurement center, Fudan university, 220 Handan Lu, Shanghai 200433 1Shanghai Institute of Organic Chemistry Chinese Academy of Sciences 345 Lingling Lu Shanghal 2000322Analysis and Measurement Center Fudan University 220 Handan Lu Shanghai 200433

Irradiation of phenyl iodonium bis(perfluoroalkanesulphonyl)methide in DMSO yields an 1:1 adduct, DMSO·PhI=C(SO_2R_F)_2 (2) which was confirmed by X-ray crystal structure analysis.

关键词： Phenyl iodonium bis perfluoroalkanesulphonyl Its formation and X-ray structure analysis methide-dimethyl sulphoxide complex DMSO 亚砜

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高校图书馆学科资源导航系统分析

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图书情报工作 2002年第8期46卷 84-87,66页

作者：苏开颜浙江大学图书馆采访中心杭州310027

通过对中国高等教育文献保障系统(CALIS)61个成员图书馆网站的跟踪调查,对其学科资源导航系统进行分析和比较,并提出一些问题和建议。

关键词：大学图书馆网络资源学科导航系统专题导航导航库结构

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MODEL OF MODERN DYNAMIC DEPOSITION IN THE EAST china SEA

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Chinese Journal of Oceanology and Limnology 1989年第3期7卷 274-282页

作者：周福根 Marine Geological Department and analysis & Research center Tongji University Shanghai

Since the last rising of sea level, two branches of the Kuroshio, the Huanghai ( Yellow Sea ) coastal current (HCC; mainly cold water mass)and the Changjiang River outflow have controlled the modem dynamic deposition in the East china Sea. There are three depositing areas on the sea-bed under the above currents: a relict sand area un der the Taiwan Warm Current and the Huanghai Warm Current at the south-eastern area, the about 60 km2 round mud bank under the Huanghai CoastalCurrent at the northernarea and the large subaqueous delta of mainly fine sand and silt under the Changjiang discharge flow in its estuary and the large narrow mud bank under the zhejiang-Fujian Coastal Current, another round mud bank under the Changjiang discharge flow off hangzhou Bay. The relict sand area has a coarsesand block under the Taiwan Warm Current bypassing Taiwan at the northern part of the *** two round mud banks were formed in relatively static states by an anticlockwise converging cyclonic eddy. The

关键词： DYNAMIC Fujian hangzhou Taiwan eastern banks branches Jiangsu modem outflow

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Construction of human eukaryotic expression plasmid vascular endothelial growth factor 165 and its expression in transfected vascular smooth muscles

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Hepatobiliary & Pancreatic Diseases International 2004年第3期3卷 355-359页

作者： Zhong-Jun Wu, Xiao-Hong Yang, Shu-Sen Zheng, Su-Fen Yang and De Shi Organ Transplant center, First Affiliated Hospital,zhejiang university School of Medicine, hangzhou 310003, china Department of General Surgery, Affiliated Hospital of ZunyiMedical College, Zunyi 563003 , china and Department ofVascular Surgery, Chongqing Medical university, Chongqing 400016 , Chi-na Organ Transplant center First Affiliated Hospital Zhejiang University School of Medicine Hangzhou 310003 China. wzjxdfpxy@***

BACKGROUND: The highly specific vascular endothelialgrowth factor (VEGF) induces the growth of vascular en-dothelial cell. This study was to construct the eukaryoticexpression plasmid of vascular endothelial growth factorl65(VEGF165) and observe its expression in vascular smoothmuscles (VSMCs).METHODS: The primers were designed and synthesizedaccording to the gene sequences of human VEGF165. TheVEGF165 gene was obtained from umbilic artery tissue bythe method of RT-PCR, then it was cloned to eukaryoticexpression plasmid pBudCE4.1 by recombination *** eukaryotic expression plasmid named pBudCE4.1/VEGF165 was identified by restriction enzyme digestion,and was sequenced. The pBudCE4.1/VEGF165 was trans-fected into VSMCs by using lipofection. The VEGF165 ex-pression of mRNA and protein was detected by RT-PCRand Western blot ***: VEGF165 was shown about 576bp by *** revealed the amplified VEGF165 gene was iden-tical with that in the GeneBank. Restrictive enzyme (HindBam HI) digestion analysis showed that recombinantexpression plasmid pBudCE4. l/tVEGF165 had been con-structed successfully. The expression of VEGF165 at mRNAand protein levels in the transformed VSMCs had beendemonstrated by RT-PCR and Western ***: The recombinant eukaryotic expressionplasmid pBudCE4.1/VEGF165 has been successfully con-structed and expressed in transformed VSMCs. The presentstudy has laid a foundation for VEGF165 gene therapy ofvascular stenosis in the transplant organ.

关键词： eukaryotic expression plasmid human vascular endothelial growth factor vascular smooth muscle cell gene transfer organ transplant

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Minimum-norm Source Estimation of Magnetoencephalography Utilizing Tikhonov Regularization Technique

Minimum-norm Source Estimation of Magnetoencephalography Uti...

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CCAST“北京第二次医学影像物理和工程”国际研讨会

作者： Hu Jie Hu JingFirst Affiliated Hospital zhejiang university College of Medicine hangzhou china 310006 College of Information Engineering zhejiang university of Technology hangzhou china

＜正＞ In neuromagnetic source reconstruction, according to the dipole source model and distributed source model, there have two main classes of reconstruction techniques—parametric current dipole localization and nonparametric source reconstruction. MEG inverse problem base on distributed source model becomes an ill-posed undetermined linear problem. In this paper, In order to yield a unique and stable solution, we propose the minimum-norm estimation with Tikhonov regularization technique in order to yield an robust and plausible neural current distribution. We propose a modified regularization method, comparing its performance with the conventional method, computer simulation analysis show how the solution is improved.

关键词： MEG distributed source minimum-norm estimation Tikhonov regularization

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植物病原物无毒基因及其功能

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生物工程学报 2002年第1期18卷 5-9页

作者：蔡新忠徐幼平郑重浙江大学植物保护系浙江大学分析测试中心杭州310029

植物抗病基因与病原物无毒基因产物间直接或间接相互作用导致产生的基因对基因抗性是植物抗病性的重要形式。无毒基因已在多种植物病原物 ,包括真菌、细菌、病毒和卵菌等中得到克隆。绝大多数已克隆无毒基因之间 ,及其与已知蛋白之间 ,... 详细信息

植物抗病基因与病原物无毒基因产物间直接或间接相互作用导致产生的基因对基因抗性是植物抗病性的重要形式。无毒基因已在多种植物病原物 ,包括真菌、细菌、病毒和卵菌等中得到克隆。绝大多数已克隆无毒基因之间 ,及其与已知蛋白之间 ,均无显著序列同源性。然而 ,多数已克隆植物抗病基因有较高序列一致性 ,产物往往具有相似的结构域。由序列一致性很高的抗病基因产物与没有明显序列同源性的无毒基因产物相互作用 ,介导产生的过敏性细胞坏死和抗病性 ,在产生速度、强度和组织特异性等方面均可能有显著差异。无毒基因具有双重功能 :在含互补抗病基因植物中表现无毒效应 ,而在不含互补抗病基因植物中显示小种、菌株、致病型。

关键词：植物病原物无毒基因功能毒性致病性

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实验室资质认定制度在大型仪器设备开放共享管理中的作用

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实验技术与管理 2011年第11期 350-354页

作者：梅建平冯建跃李崧东南大学分析测试中心浙江大学分析测试中心北京师范大学分析测试中心

提出了运用实验室资质认定制度的有关理念,从人员、设备、过程管理的角度,为解决高校大型仪器设备管理运行中出现的现实问题,为大型仪器设备的开放共享管理提出了一些思路与对策。

关键词：大型仪器设备资质认定开放共享

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Studies on solid state reactions of coordination compounds——XLⅦ.Solid state syntheses and crystal structures of cluster compounds {Cu_3MoS_3I}(PPh_3)_3S and {Cu_3WS_3Br} (PPh_3)_3S

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Chinese Journal of Chemistry 1993年第1期11卷 21-29页

作者： LANG,Jian-Ping ZHU,Hui-Zhen XIN,Xin-Quan Department of Chemistry,Nanjing university,Nanjing 210008CHEN,Ming-Qin LIU,Kun ZHENG,Pei-Ju center of analysis and measurement,Fudan university,Shanghai 200433

Reactions of [NH_4]_2[MS_4](M=Mo,W),CuX(X=Br,I)and PPh_3 in the solid state produced four mixed-metal sulfur containing clusters{Cu_3MS_3X}(PPh_3)_3S(M=Mo,W;X=Br,I),two of which (1:M=Mo,X=I;2:M=W,X=Br)were structurally *** of 1 and 2 are triclinic, space group P(1:a=11.895(3),b=13.107(1),c=20.473(2),α=74.95(6),β=84.87(8),γ=64.27(7)°, Z=2,V=2776.1 ,Rw=0.064 for 6443 observed reflections.2:α=11.876 (1),b=13.065 (2),c= 20.325(2),α=74.95(1),β=85.39(1),γ=64.09(1)°,Z=2,V=2737.3,R_w=0.055 for 5303 observed reflections).The results of the structure determination showed that the central units of the two cubane- like cluster compounds are composed of four metal atoms and four non-metal atoms situated at alter- nate *** differences of cubane-like cluster compounds obtained from solid state reactions and from solution reactions are discussed.

关键词： Solid state syntheses and crystal structures of cluster compounds and Cu3WS3Br PPh3 WS Br XL

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Spectroscopic analysis on the Effect of Temperature on Kunitz Domain 1 of Human Tissue Factor Pathway Inhibitor-2

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Acta Biochimica et Biophysica Sinica 2007年第6期39卷 406-412页

作者： Chenqi ZHANG~(1#), Desheng KONG~(2#), Xingang LIU~1, Xiaomin YAN~1, Linsen DAI~(1*), and Duan MA~(2*) 1 center of analysis and measurement, Fudan university, Shanghai 200433, china 2 Key Laboratory of Molecular Medicine. Ministry of Education, Fudan university, Shanghai 200032, china center of analysis and measurement Fudan UniversityShanghai 200433China KeyLaboratory of Molecular Medicine Ministry of EducationFudan UniversityShanghai 200032China

The conformation of Kunitz domain 1 of human tissue factor pathway inhibitor-2 (hTFPI-2/KD1) has been studied by Fourier transform infrared spectroscopy, circular dichroism, and Raman spectroscopy. It was found that hTFPI-2/KD1 contained approximately 17% s-helices, 24% β-strands, 46% random coils, 13% β-turns, and two kinds of disulfide bonds (ggg and tgt) at 25℃. The detailed conformational changes of the heated protein observed by Fourier transform infrared spectroscopy, circular dichroism and Raman spectroscopy revealed that hTFPI-2/KD1 was thermally stable. However, KD1 could form an intermediate form at high temperature, then return to its normal conformation when the temperature was lowered. Activity assays also showed that hTFPI-2/KD1 was able to keep its inhibitory activity on plasmin after being heated to 80℃ for 5min.

关键词： hTFPI-2/KD1 conformation disulfide bonds thermal stability structure and function

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