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Journal of Hydrodynamics 2008年第6期20卷 762-769页

作者： CHENG Xu-duo HU Mei-zhu WEN Ji-hua School of Food Science and Engineering Nanjing University of Finance and Economics Nanjing 210003 China department of physics Anqing Teachers College Anqing 246011 China

The dynamic characteristics of liquid sloshing in a transversely vibrating spherical tank with spacer under low gravity were investigated. By expanding the characteristic functions, the frequencies and velocity potentials of liquid free-sloshing were obtained. The dynamic equations and boundary conditions of liquid sloshing in the traverse vibrational spherical tank with spacer under low gravity were derived. By modifying the velocity potentials of liquid free-sloshing, the velocity potentials of liquid sloshing in the traverse vibrating spherical tank with a spacer were obtained. Furthermore, the forces and the moments acting on tank wall were given. The numerical results show when a spacer is inserted in the tank, the sloshing frequencies of liquid and the forces acting on tank wall will decrease, but the moment of force to the centre of the tank which is caused by the force of liquid acting on the spacer will occur.

关键词： low gravity liquid forced sloshing sloshing suppression

具有Wood-Saxon势的Dirac方程的束缚态

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物理学报 2004年第3期53卷 680-683页

作者：陈刚绍兴文理学院物理系绍兴312000

给出了具有一维Wood_Saxon型标量势大于或等于其矢量势时的Dirac方程的s波束缚态解

关键词： Wood-Saxon势 Dirac方程束缚态精确解相对论效应量子力学量子化条件

Rosen-Morse势阱中相对论粒子的束缚态

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物理学报 2004年第3期53卷 684-687页

作者：陈刚绍兴文理学院物理系绍兴312000

给出了具有Rosen_Morse型标量势与矢量势的Klein_Gordon方程和Dirac方程的s波束缚态解 .运用超对称量子力学和形不变性得到了束缚态能谱 ,通过变量代换求得波函数 .

关键词： Rosen-Morse势阱束缚态 Dirac方程 Klein-Gordon方程量子力学变量代换波函数相对论量子力学

具有Pschl-Teller型标量势与矢量势的Klein-Gordon方程和Dirac方程的束缚态

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物理学报 2001年第9期50卷 1651-1653页

作者：陈刚绍兴文理学院物理系绍兴312000

给出了具有P schl Teller型标量势与矢量势的Klein Gordon方程和Dirac方程的s波束缚态解 .

关键词： Poeschl-Teller势 Klein-Gordon方程 Dirac方程束缚态标量势矢量势粒子运动量子力学

Sonochemical effect of a bifrequency irradiation

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Chinese Science Bulletin 2000年第2期45卷 142-145页

作者： ZHU Changping, FENG Ruo & ZHAO Yiyun department of physics. Jingzhou Normal college, Jingzhou 434100, china State Key Laboratory of Modern Acoustics, Nanjing University, Nanjing 210093, china Chemistry department of Yunnan University, Kunming 650091, Ch department of physics Jingzhou Normal College Jingzhou China State Key Laboratory of Modern Acoustics Nanjing University Nanjing China Chemistry department of Yunnan University Kunming China

The sonochemical effect of a bifrequency orthogonal ultrasonic irradiation has been studied by using two different detecting methods. It has been shown that the sonochemical yield produced by the bifrequency irradiation appears to be much more than the sum of the yields produced separately by the two irradiations. The bifrequency irradiation, therefore, can be expected to exert a great influence on the development of sonohemical

关键词： bifrequency sonochemistry effect.

THE　REACTION　OF　p－NITROPHENYLSULFONYLACETONITRILE　WITH　α，β－UNSATURATED　ESTERS　AND　NITRILES

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Chinese Chemical Letters 1996年第4期7卷 305-308页

作者： Guo Ren YUE and Zheng Zhang(department of Chemistry, Zhangye teachers’ college.Zhangye,734000department of Chemistry, Nanjing University, Nanjing, 210093) ZHANGYE teachers COLL DEPT CHEMZHANGYE 734000PEOPLES R CHINA NANJING UNIV DEPT CHEMNANJING 210093PEOPLES R CHINA

Michael addition and an unexpected tandem addition-rearrangement reaction occurred when p-nitrophenylsulfonylacetonitrile(1)reacted with α-β-unsaturated estcrs and nitriles (2a-f).Different products can be obtained ... 详细信息

关键词：用成 ESTERS NITRILES OF REACTION THE UNSATURATED WITH AND

DYNAMIC CHARACTERISTICS OF LIQUID FORCED SLOSHING IN A TURNING SPHERICAL TANK WITH A SPACER UNDER LOW GRAVITY

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Journal of Hydrodynamics 2008年第2期20卷 202-209页

作者： CHENG Xu-duo HU Mei-zhu WEN Ji-hua School of Food Science and Engineering Nanjing University of Finance and Economics Nanjing 210003China department of physics Anqing Teachers College Anging 246011 China

Under the condition of low gravity the characteristics of liquid forced sloshing in a turning spherical tank with a spacer were investigated. The static shape of the liquid surface was analyzed. By expanding the characteristic functions, the frequencies and velocity potential of liquid free-sloshing were derived. The governing equations and boundary conditions for the forced sloshing of liquid under the tank turning were established. The transverse force of liquid acting on the tank and the moment of force to the centre of the tank which is caused by the force of liquid acting on the spacer were given. Numerical results were compared with the ones of the spherical tank without a spacer. The results show that when a spacer is inserted in the tank, the sloshing frequency of liquid and the transverse force of liquid acting on the tank will decrease, but the moment of force to the centre of the tank which is caused by the force of liquid acting on the spacer will occur.

关键词： low gravity forced sloshing of liquid sloshing suppression

Characteristics of fMRI BOLD signal and its neurophysiological mechanism

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Progress in Natural Science:Materials International 2007年第6期17卷 630-638页

作者： Zhao Xiaohu1,2, Wu Yigen3 and Guo Shengli3(1. college of Life Sciences, Zhejiang University, Hangzhou 310058, china 2. Imaging department of Tongji Hospital of Tongji University, Shanghai 200065, china 3. college of Mathematics and physics, Nanjing University of Information Science and Technology, Nanjing 210044, china) college of Life Sciences Zhejiang University Hangzhou 310058 China Imaging department Tongji Hospital Tongji University Shanghai 200065 China college of Mathematics and physics Nanjing University of Information Science and Technology Nanjing 210044 China

The functional magnetic resonance imaging (fMRI) based on blood oxygen level dependent (BOLD) contrast has emerged as one of the most potent noninvasive tools for mapping brain function and has been widely used to explore physiological, pathological changes and mental activity in the brain. Exploring the nature and property of BOLD signal has recently attracted more attentions. Despite that great progress has been made in investigation of the characteristics and neurophysiological basis, the exact nature of BOLD signal remains unclear. In this paper we discuss the characteristics of BOLD signals, the nonlinear BOLD response to external stimuli and the relation between BOLD signals and neural electrophysiological recordings. Furthermore, we develop our new opinions regarding nonlinear BOLD response and make some perspectives on future study.

关键词： functional magnetic resonance imaging blood oxygen level dependent nonlinear response neural electrophysiological activity.

The dynamical properties of Rydberg hydrogen atom near a metal surface

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Science china(physics,Mechanics & Astronomy) 2005年第6期48卷 667-675页

作者： GE Meihua1, ZHANG Yanhui1, WANG Dehua2, DU Mengli3 & LIN Shenglu1 1. college of physics and Electronics, Shandong Normal University, Jinan 250014, china 2. department of Mathematics and physics, Shandong Institute of Architecture and Engineering, Jinan 250014, china 3. Institute of Theoretical physics, Chinese Academy of Sciences, Beijing 100080, china 1. college of physics and Electronics Shandong Normal University 250014 Jinan China 2. department of Mathematics and physics Shandong Institute of Architecture and Engineering 250014 Jinan China 3. Institute of Theoretical physics Chinese Academy of Sciences 100080 Beijing China

The dynamical properties of Rydberg hydrogen atom near a metal surface are presented by using the methods of phase space analysis and closed orbit theory. Transforming the coordinates of the Hamiltonian, we find that the phase space of the system is divided into vibrational and rotational region. Both the Poincaré surface of section and the closed orbit theory verify the same conclusion clearly. In this paper we choose the atomic principal quantum number as n = 20. The dynamical character of the exited hydrogen atom depends sensitively on the atom-surface distance d. When d is sufficiently large, the atom-surface potential can be expressed by the traditional van der Waals force and the system is integrable. When d becomes smaller, there exists a critical value dc. For d > dc, the system is near-integrable and the motion is regular. While chaotic motion appears for d < dc, and the system tends to be non-integrable. The trajectories become unstable and the electron might be captured onto the metal surface.

关键词： Rydberg hydrogen atom, van der Waals interaction, Poincaré surface of section, closed orbit theory, chaos.

Synthesis of Arsamacrocyclic Polyethers

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Chinese Chemical Letters 1999年第8期10卷 665-666页

作者： Xin You CHEN Guo Feng YU Wen Tian TAO (department of Chemistry. Xiaogan teachers college,Hubei 432100)(department of Chemistry, Wuhan University,Wuhan 430072) Xiaogan teachers Coll Dept Chem Hubei 432100 Peoples R China Wuhan Univ Dept Chem Wuhan 430072 Peoples R China

The synthesis of eight new arsamacrocyclic Polyethers was described. The structures of these compounds were characterized by elemental analysis, IR, H-1-NMR and MS.

关键词： macrocyclic compound arsamacrocyclic polyether synthesis