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A Series of Soliton-like and Double-like Periodic Solutions of a (2.1)-Dimensional Asymmetric Nizhnik-Novikov-Vesselov Equation

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Communications in Theoretical physics 2004年第11期42卷 655-660页

作者： CHEN Yong,~(1,3,4, WANG Qi~(2.4) LI Biao~(2.4) ~1department of Mathematics,Ningbo university,Ningbo 3152.1,{2. ~2.0} of Applied Mathematics,Dalian university of Technology,Dalian 11602.,{2. ~3department of physics,shanghai Jiao Tong university,shanghai 2.0030,{2. ~4Key Laboratory of Mathematics Mechanization~ the Chinese Academy of Sciences,Beijing 100080,{2. Key Laboratory of Mathematics Mechanization the Chinese Academy of Sciences Beijing 100080 China

We generalize the algebraic method presented by Fan [***.A:***.36 (2.03) 7009)] to uniformlyconstruct a series of soliton-like solutions and double-llke periodic solutions for nonlinear partial differential equations(NPDE),As an application of the method,we choose a (2.1)-dimensional asymmetric Nizhnik-Novikov-Vesselov equa-tion and successfully construct new and more general solutions including a series of nontraveling wave and coefficientfunctions’ soliton-like solutions,double-like periodic and trigonometric-like function solutions.

关键词： symbolic computation soliton-like solution Weierstrass and Jacobi elliptic functions periodic solution

Optical Response of Granular YBCO Weak Link

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Chinese Journal of Lasers 1996年第1期B5卷 43-46页

作者： XU Kexi, ZHOU Shiping, BAO Jiashan(physics department, {2. university, Jia-Ding, {2. 2.1800, china)XU Weiwei, WANG Huabing(Nanjing university, Nanjing 2.0093, china) shanghai Univ Shanghai China

A preliminary result on photoresponse of granular YBa2.u3O7-x （YBCO） weak link is reported. The Josephson eritical current Ic is suppressed by the light illumination. At lower temperature （T= 64. 5K ）, the hysteresis in I-V charateristics of the weak link appears. These features of the granular high- Tc oxide Josephson junctions may be usefull for optical detection purpose.

关键词： :Granular superconducting films weak link photoresponse

Dynamics of Primary Events in the Photocycle of Excited Bacteriorhodopsin

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Acta Biochimica et Biophysica Sinica 2004年第11期36卷 724-728页

作者： Jun-Jun LU, Ming MING, Yi YANG, Jia WU, Bo LI, Jian-Dong DING, Qing-Guo LI, and Shi-Xiong QIANdepartment of physics, Fudan {2., shanghai 2.0433, china department of Macromolecular Science, Key Laboratory of Molecular Engineering of Polymers, Fudan {2., shanghai 2.0433, china department of Physiology and Biophysics, School of Life Sciences, Fudan {2., shanghai 2.0433, china department of physics Fudan University Shanghai 200433 China

Transient dynamic behavior of the excited bacteriorhodopsin (BR), which was isolated from the strain H. salinarum, was studied at excitation wavelength from 585 to 639 nm. With the one-color femtosecond (fs) pump-probe technique, we revealed the primary events in BR's photocycle that took place in an ultrafast time scale. From the analysis of the decay components of the dynamical traces, it was evident that the isomerization of the retinal

关键词： bacteriorhodopsin transient dynamics primary events femtosecond laser pump-probe technique

THE COMPARISON-NUMBER METHOD FOR FINDING MAJOR OPTIMAL SOLUTIONS AND MAJOR EFFICIENT SOLUTIONS OF THE DISCRETE MULTIOBJECTIVE PROGRAMMING

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Systems Science and Mathematical Sciences 1993年第3期6卷 284-289页

作者： HU Yuda SUN Erjiang department of Applied Mathematics, shanghai jiaotong university,{2., china

In this paper, we introduce the comparison number for one feasible solutioncompared with another. With the help of it the comparison-number method for find-ing the major optimal solutions aud major efficient solutions... 详细信息

关键词： Multiobjective programming Pareto efficient solution major optimal solution major efficient solution

On Endomorphism Rings of Regular Modulos (Dedicated to Professor Zhou Boxun for his 80'th Birthday)

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Acta Mathematica Sinica,English Series 1998年第3期14卷 385-390页

作者： Wu Tongsuo department of Applied Mathematics. shanghai jiaotong university.{2., china

In this paper. we study the endomorphism rings of regular *** give sufficient conditions on a regular projective module P such that End_R(P) has stable range one.

关键词： Regular projective module Stable range one Exchange ring

Advanced technology for functionalization of carbon nanotubes

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Progress in Natural Science:Materials International 2009年第7期19卷 801-810页

作者： Lingjie Meng, Chuanlong Fu, Qinghua Lu School of Chemistry and Chemical Technology, shanghai jiaotong university, shanghai 2.02.0,{2. [a]School of Chemistry and Chemical Technology Shanghai Jiaotong University Shanghai 200240 China

Functionalization of carbon nanotubes (CNTs) has attracted considerable interest in the fields of physics, chemistry, material science and biology. The functionalized CNTs exhibit improved properties enabling facile fabrication of novel nanomaterials and *** of the functionalization approaches developed at present could be categorized into the covalent attachment of functional groups and the non-covalent adsorption of various functional molecules onto the surface of CNTs. This review highlights recent development and our work in functionalization of carbon nanotubes, leading to biocompatible CNTs, fluorescent CNTs and transition metal functionalized CNTs. These novel methods possess advantages such as simplified technical procedures and reduced cost of novel nanomaterials and nanodevices fabrication.

关键词： Carbon nanotubes (CNTs) Functionalization Bio-compatibility Fluorescence Transition metal

An Improved Scalar Costa Scheme Based on Watson Perceptual Model

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Journal of shanghai jiaotong university(Science) 2008年第1期13卷 26-29页

作者：齐开悦陈剑波周异 department of Electronic Engineering Shanghai Jiaotong University School of Information Security Shanghai Jiaotong University Shanghai 200030 China

An improved scalar Costa scheme (SCS) was proposed by using improved Watson perceptual model to adaptively decide quantization step size and scaling factor. The improved scheme equals to embed hiding data based on an actual image. In order to withstand amplitude scaling attack, the Watson perceptual model was redefined, and the improved scheme using the new definition can insure quantization step size in decoder that is proportional to amplitude scaling attack factor. The performance of the improved scheme outperforms that of SCS with fixed quantization step size. The improved scheme combines information theory and visual model.

关键词： information hiding scalar costa scheme perceptual model quantization step size

Density-functional theory study of the effect of pressure on the elastic properties of CaB_6

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Chinese physics B 2013年第7期22卷 420-425页

作者：韩晗 Surface physics Laboratory (National Key Laboratory) Key Laboratory of Computational Physical Sciencesand Department of PhysicsFudan University

Under high pressure, the long believed single-phase material CaB6 was latterly discovered to have a new phase tI56. Based on the density-functional theory, the pressure effects on the structural and elastic properties of CaB6 are obtained. The calculated bulk, shear, and Young’s moduli of the recently synthesized high pressure phase tI56-CaB6 are larger than those of the low pressure phase. Moreover, the high pressure phase of CaB6 has ductile behaviors, and its ductility increases with the increase of pressure. On the contrary, the calculated results indicate that the low pressure phase of CaB6 is brittle. The calculated Debye temperature indicates that the thermal conductivity of CaB6 is not very good. Furthermore, based on the Christoffel equation, the slowness surface of the acoustic waves is obtained.

关键词： density-functional theory elastic properties pressure effects acoustic properties

SYNERGY OF WALL SHEAR STRESS AND CIRCUMFERENTIAL STRESS IN STRAIGHT ARTERIES

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Journal of Hydrodynamics 2005年第6期17卷 752-757页

作者： QIN Kai-rong XU Zhe WU Hao JIANG Zong-lai LIU Zhao-rong Institute of Mechanobiology and Medical Engineering Shanghai Jiaotong University Shanghai 200240 China department of Mechanics and Engineering Science Fudan University Shanghai 200433 China Institute of Mechanobioiogy and Medical Engineering Shanghai Jiaotong University Shanghai 200240China

The Wall Shear Stress （WSS） generated by blood flow and Circumferential Stress （CS） driven by blood pressure have been thought to play an important role in blood flow-dependent phenomena such as angiogenesis, vascular remodeling, and atherosgenesis. The WSS and CS in straight arteries were calculated by measuring the blood pressure, center-line velocity, wall thickness, and radius of vessels. The WSS and CS in the time domain were then decomposed into the amplitude and phase in the frequency domain. The CS amplitude to the WSS amplitude ratio （referred as stress ampli tude ratio, Zs ） and the phase difference between the CS and the WSS （referred as stress phase difference, SPA） in the fre quency domain were calculated to characterize the synergy of the CS and WSS. Numerical results demonstrated that the CS is not in phase with the WSS, a time delay in the time domain or a stress phase difference in the frequency domain between the WSS and the CS exists. Theoretical analysis demonstrated that the Zs and SPA are primarily determined by the local fac tors （blood viscosity, local inertial effects, local geometry, loeal elasticity） and the input impedance of whole downstream arterial beds. Because the arterial input impedance has been shown to reflect the physiological and pathological states of whole downstream arterial beds, the stress amplitude ratio Zs and stress phase difference SPA would be thought to be the appropriate indices to reflect the effects of states of whole downstream arterial beds on the local blood flow dependent phenomena such as angiogenesis, vascular remodeling, and atherosgenesis.

关键词： Wall Shear Stress (WSS) Circumferential Stress (CS) wall shear stress-circumferential stress synergy,angiogenesis vascular remodeling atherosgenesis