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Three-dimensional investigation of velocity skin effect in U-shaped solid armature

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Progress in Natural Science:Materials International 2008年第12期18卷 1565-1569页

作者： Xin Li~a Chunsheng Weng~b a School of Power Engineering,nanjing university of Science and technology,nanjing 210094,china b National key laboratory of Transient Physics,nanjing university of Science and technology,nanjing 210094,china [a]School of Power Engineering Nanjing University of Science and Technology Nanjing 210094 China [b]National key laboratory of Transient Physics Nanjing University of Science and Technology Nanjing 210094 China

A three-dimensional transient computational model is applied to investigate the velocity skin effect (VSE) in a U-shaped solid arma- *** this model,current and heat transport in the armature can be evaluated *** results show a local concentration of current and joule heating at the interface,and significant damage occurs at the edges of the *** is also observed that there is significant enhanced heating at sharp comers because of the armature *** three-dimensional model can efficiently capture the salient features of the physical phenomena at the rail-armature interface,and contribute to the development of the armature design.

关键词： Electromagnetic launch Railgun U-shaped armature Velocity skin effect Erosion

Holographic QSAR of estradiol derivatives

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Chinese Science Bulletin 2003年第7期48卷 642-645页

作者： CUI Shihai, LIU Shushen, WANG Xiaodong & WANG Liansheng state key laboratory of Pollution Control and Resource Reuse, School of Environment, nanjing university, nanjing 210093, china 1. state key laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing 210093 China

Holographic QSAR model is constructed to predict relative binding affinities of estradiol derivatives with lamb uterine estrogen receptor. The method does not require the generation of three-dimensional structure of the compounds. The factors that influence the quality of QSAR model are discussed. The result indicates that the model has good predictability and yields a high q2LOO value of 0.897. Compared to other QSAR methods, the HQSAR technique is suitable for use in screening large database of chemicals.

关键词：雌二醇衍生物全息结构性质相关性内分泌紊乱化合物紊药物分析

Advances of multiplex and high throughput biomolecular detection technologies based on encoding microparticles

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Science china Chemistry 2011年第8期54卷 1185-1201页

作者： ZHAO XiangWei, ZHAO YuanJin & GU ZhongZe state key laboratory of Bioelectronics Southeast university, nanjing 210096, china 1. state key laboratory of Bioelectronics Southeast University Nanjing 210096 China

The rapid developments of genomics and proteomics have driven the demand for multiplex and high throughput analysis of large numbers of biomolecules in the fields of medical diagnostics, drug discovery, and environmental monitoring. Encoding the biomolecular binding events is the key technique to fulfill this demand, in which microparticles play the most important roles. This review outlines the development of multiplex and high throughput biodetections, and highlights the most recent advances in the field of encoding microparticles, together with problems that need to be resolved.

关键词： multiplex bioassays multiplex labels encoded microcarrier binding assays high throughput screening

Magnetic mineralogy of the Hongqiling Cu-Ni sulphide deposit: Implications for ore genesis

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Progress in Natural Science:Materials International 2007年第10期17卷 1192-1198页

作者： Xi Aihua1,2, Ge Yuhui1, Cai Yuanfeng2 and Zhang Xuefeng3(1. Faculty of Resources & Environment, Southwest Petroleum university, Chengdu 610500, china 2. state key laboratory for Endogenic Metal Deposit Research, nanjing university, nanjing 210093, china 3. Department of Natural Resources & technology Information, china university of Petroleum, Beijing 102249, china) Faculty of Resources & Environment Southwest Petroleum University Chengdu 610500 China state key laboratory for Endogenic Metal Deposit Research Nanjing University Nanjing 210093 China Department of Natural Resources & technology Information China University of Petroleum Beijing 102249 China

Pyrrhotite is one of the common ore minerals in Cu-Ni sulphide deposits, but only monoclinic pyrrhotite is ferromagnetic at room temperature. X-ray and EPA analyses reveal that most pyrrhotite forming sideronitic texture in the Hongqiling Cu-Ni sulphide deposit is monoclinic, but that in the massive ore is a mixture of monoclinic and hexagonal pyrrhotites. Differential thermal and magnetic- thermogravimetric analyses of massive ore indicate a magnetic transition and heat absorption at 323℃, suggesting that this temperature is the thermomagnetic and phase transition point of pyrrhotite. For massive pyrrhotite ores heated at 400oC for 30 h and then quenched by cool water, the monoclinic pyrrhotite (mpo) transforms completely into the hexagonal pyrrhotite (hpo). However, all the pyrrhotites resulting from slow cooling of the sample in air are mpo. These results indicate that transformation between hpo and mpo depends upon the cooling rate. Therefore, massive ores in this deposit might have been formed via rapid cooling of ore melts. On the other hand, it is significant to study the effect of the ratio of the magnetite in total ores on the genesis of magmatic Cu-Ni suphide deposits.

关键词： pyrrhotite magnetite genesis of Cu-Ni sulphide deposit Hongqiling.

LOW POTENTIAL ELECTROPOLYMERIZATION OF ANISOTROPIC CONDUCTIVE POLYTHIOPHENE FILMS AND FABRICATION OF ELECTRICAL DEVICES

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Chinese Journal of Polymer Science 1999年第2期17卷 99-111页

作者： Xiao-bo Wan Yun Lu Xiao-rong Liu Liang Zhou Shi Jin Gi Xue Department of Polymer Science and Engineering, the state key laboratory of Coordination Chemistry, nanjing university, nanjing 210093, china nanjing Univ Dept Polymer Sci & Engn State Key Lab Coordinat Chem Nanjing 210093 Peoples R China

The Complexation of thiophene with a Lewis acid with moderate acidity as a solvent, such as BF3-ethyl ether (BFEE) remarkedly lowered the electrochemical polymerization potential. The positively charged metal surface of electrode in the process of electrochemical deposition enhanced the coordination interaction between pi-electrons of thiophene unit and the metal, which makes thiophene rings lie parallel to the surface of electrode, resulting in a highly ordered polymeric structure. Because of the large intra-chain transfer integrals, the transport of charge is believed to be principally along the conjugated chains, which is much greater than the inter-chain hopping. The specific electrical resistance across the polythiophene film thickness is more than 10(4) times than that along the surface plane of the film. In this paper we review the recent development of polymerization technique by low potential electrochemical method performed in our lab and several electrical devices in which the compact polythiophene films, such as anionic and cationic sieves, and laminate film junction of undoped polythiophene derivatives were used.

关键词： conductive polymer polythiophene anisotropy electric device film junction

MAGNETIC　INVESTIGATION　OF　THE　NICKEL　COMPLEXES　OF　MULTI－SULFUR　1．2－DITHIOLATES

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Chinese Chemical Letters 1996年第7期7卷 685-686页

作者： Tian Ming YAO Xian Fa SHI Xiao Zeng YOU(Department of Chemistry,Tongji university, Shanghai 200092)(state key laboratory of Coordination Chemistry,nanjing university,nanjing 210093) TONGJI UNIV DEPT CHEMSHANGHAI 200092PEOPLES R CHINA nanjing UNIV STATE KEY LAB COORDINAT CHEMNANJING 210093PEOPLES R CHINA

The magnetic susceptibility of (Bu4N)(NI(MEDT)2) and (Bu4N)(Ni(PHDT)2)(MEDT:5-methyl-6-hydro-1, 4-dithiin-2, 3-dithiolate, PHDT: 5-phenyl-6-hydro-1.4-dithiin- 2,3-dithiolate) was measured in the temperature range of 75-300K. The magnitudeof magnctic moments is consistent,with a doublet state arising from Ni(Ⅲ).Antiferromagnetic properties were discussed in consideration of molecularstructure.

关键词： MULTI DITHIOLATES INVESTIGATION MAGNETIC COMPLEXES NICKEL OF SULFUR THE

Research on Applications of Cryptography for Multi-Mobile Agent System

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The Journal of china Universities of Posts and Telecommunications 2004年第4期11卷 29-32页

作者： HUANG Hai-ping~1 WANG Ru-chuan~(1,2) XU Xiao-long~11.Department.of Computer Science and technology,nanjing university of Posts and Telecommunications,nanjing 210003,P.R.china 2.state key laboratory for novel software technology,nanjing university,nanjing 210093,P.R.china Department. of Computer Science and technology Nanjing University of Posts and Telecommunications Nanjing 210003

With the development of information network and agent technology,Multi-Mobile Agents'Cooperation can notonly improve the computing efficiency,but also have a comprehensive applicative value in solving the security issues of mo-bile agent *** at the security and flexibility,this paper proposes a kind of basic architecture and the designpattern of Multi-Mobile Agent System(MMAS).Combined with cryptography,it builds the security mechanism on keys'distribution and management and Coalition Signature of *** the analysis of security and validity,the in-troduction and application of cryptography can improve the performance of MMAS.

关键词： Multi-Mobile Agents System (MMAS) cryptography keys' distribution coalition signature

Special magnetic phenomena in heavily doped La_(0.7-x)Dy_xSr_(0.3)MnO_3 system

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Science china(Physics,Mechanics & Astronomy) 2008年第1期51卷 90-97页

作者： LIU Ning 1,2 ,YAN GuoQing 1,3 ,CAI ZhiRang 1 ,PI Li 2 ,ZHANG Bei 2 &TONG Wei 2 1 Department of Physics,Suzhou College,Suzhou 234000,china 2 Structure Research laboratory,university of Science and technology of china,Hefei 230026,china 3 National laboratory of Solid state Microstructures,Physics Department,nanjing university,nanjing 210093,china 1. Department of Physics Suzhou College Suzhou 234000 China 2. Structure Research laboratory University of Science and Technology of China Hefei 230026 China 3. National laboratory of Solid state Microstructures Physics Department Nanjing University Nanjing 210093 China

The magnetism in heavily Dy doped La0.7-xDyxSr0.3MnO3(0.40≤x≤0.70)system is studied in this *** M-T relation seems to be complicated with the increase of *** sample with x=0.40,AFM behavior exists at T≤TN and M-T curves under zero field cooling(ZFC)and field cooling(FC)exhibit typical behavior of spincluster glass state above *** the sample with x=0.50,the M-T curve under ZFC exhibits a valley at a low temperature while the M-T curve under FC exhibits the negative magnetization below *** samples with x=0.60,0.70,their ZFC M-T curves are similar to that of x=0.50,but the FC M-T curves do not exhibit negative values any *** the peculiar phenomena above are well explained by Néel double-lattice model combined with M-H relation at typical *** molecular field theory fits well the negative magnetization for x=0.50.

关键词： heavily doped special magnetic phenomena double-lattice model

Evolution of chlorite composition in the Paleogene prototype basin of Jiyang Depression, Shandong, china, and its implication for paleogeothermal gradient

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Science china Earth Sciences 2007年第11期50卷 1645-1654页

作者： ZHAO Ming1, CHEN XiaoMing1, JI JunFeng1, ZHANG Zhe1 & ZHANG Yun2 1 state key laboratory for Mineral Deposits Research, Department of Earth Sciences, nanjing university, nanjing 210093, china 2 Jiangsu Survey Institute of Engineering and Physics, nanjing 210008, china 1. state key laboratory for Mineral Deposits Research Department of Earth Sciences Nanjing University Nanjing 210093 China 2. Jiangsu Survey Institute of Engineering and Physics Nanjing 210008 China

The Dongying Basin, Huimin Basin, and Zhanhua Basin constitute the Jiyang Depression in Shandong Province. They are major oil and gas exploring districts within the depression. Through reconstructions of the paleotemperature of the three basins facilitated with the chlorite geothermometry, the thermal history of the Paleogene prototype basin in Jiyang Depression and its geologic significance were explored. This study reveals that the Si^(4+) component in chlorites reduces gradually as its buried depth increases, while the AI~Ⅳ component increases accordingly. The chlorite type changes from silicon-rich diabantite to silicon-poor ferroamesite and prochlorite. The prochlorite in this district only appears in the deep buried depth, high temperature, and relatively old stratigraphies; while the diabantite appears in the shallower buried, low temperature, and newly formed strata; the ferroamesite exists in the conditions between prochlorite and diabantite formation. The diagenetic temperatures of the chlorites in these Paleogene basins are 171 — 238℃ for the Dongying Basin, 160—202℃ for the Huimin Basin, and 135—180℃ for the Zhanhua Basin. The differences of the chlorite diagenetic temperatures in the three basins were controlled by the duration time of the structural depressing processes. Higher temperature indicates longer depression time. The relationship between the chlorite diagenetic temperature and its buried depth indicates that the average paleogeothermal gradient is about 38.3℃ /km in the Paleogene prototype basin of Jiyang Depression. It was higher than the present geothermal gradient (29—30℃/km). This phenomenon was attributed to the evolution of the structural dynamics in the depression basin.

关键词： Paleogene,Jiyang depression,chlorite component,chlorite geothermometry,paleotemperature,paleogeothermal gradient