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Nonlinear elastic waves in a monatomic chain with nonlinear interaction

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原子与分子物理学报 2002年第1期19卷 79-82页

作者： PAN Liu-xian 1, ZHOU Guang-hui 2. LI Shu-shen 3(1.Department of physics, Yiyang Teacher's College, Yiyang 413049 2. Department of physics, hunan normal university, changsha 410081 3. National Laboratory for Supperlattice and Microstructure, Chinese Department of physics Yiyang Teacher's College Yiyang 413049 Department of physics Hunan Normal University Changsha 410081 中科院半导体所 National Laboratory for Supperlattice and Microstructure 北京 100083

Nonlinear wave equation for a one-dimensional anharmonic crystal lattice in terms of its microscopic parameters is obtained by means of a continuum approximation. Using a small time scale transformation, the nonlinear wave equation is reduced to a combined KdV equation and its single soliton solution yields the supersonic kink form of nonlinear elastic waves for the system.

关键词： Monatomic chain Continuum approximation Nonlinear elastic wave

Existence of the solutions and the attractors for the large-scale atmospheric equations

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Science China Earth Sciences 2006年第6期49卷 650-660页

作者： HUANG Haiyang1 & GUO Boling2.1. Department of Mathematics, Beijing normal {2., Beijing 100875, China 2. institute of Applied physics and Computational Mathematics, Beijing 100080, China 1. Department of Mathematics Beijing Normal University Beijing 100875 China 2. institute of Applied physics and Computational Mathematics Beijing 100080 China

In this paper, firstly, the proper function space is chosen, and the proper expression of the operators is introduced such that the complex large-scale atmospheric motion equations can be described by a simple and abstract equation, by which the definition of the weak solution of the atmospheric equations is made. Secondly, the existence of the weak solution for the atmospheric equations and the steady state equations is proved by using the Galerkin method. The existence of the non-empty global attractors for the atmospheric equations in the sense of the Chepyzhov-Vishik’s definition is obtained by constructing a trajectory attractor set of the atmospheric motion equations. The result obtained here is the foundation for studying the topological structure and the dynamical behavior of the atmosphere attractors. Moreover, the methods used here are also valid for studying the other atmospheric motion models.

关键词： atmosphere equations, weak solution, trajectory attractor, global attractor, equilibrium.

In Situ Acquisition of Equivalent Circuit Parameters of Crystal Resonance during Copper Deposition and Dissolution in Acidic Solution by Electrochemical Quartz Crystal Impedance System

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Chinese Chemical Letters 1999年第1期10卷 73-76页

作者： Qing Ji XIE Xiao Lian SUN Xiao Lan GU Hong Wei LIU You Yu ZHANG Shou Zhuo YAO(Chemical Research institute. hunan normal university,{2. 410081)(Chemistry Department,hunan normal university, changsha 410081) hunan normal Univ Chem Res Inst Changsha 410081 Peoples R China hunan normal Univ Dept Chem Changsha 410081 Peoples R China

Electrochemical quartz crystal impedance system (EQCIS) which allows in situ dynamic quartz crystal impedance measurement in an electrochemical experiment was developed by combining an HP 4395A Network/Spectrum/Impedance analyzer with an EG&G M2.3 potentiostat. Equivalent circuit parameters of crystal resonance change significantly during electrodeposition and dissolution of copper in 0.1 mol/L H2.O4 aqueous solution in a cyclic potential sweep experiment, which is explained with an overall picture of mass loading, solution density and viscosity, etc..

关键词： in situ quartz crystal impedance measurement equivalent circuit parameters electrodeposition copper

Accurate studies on the full vibrational energy spectra and molecular dissociation energies for some electronic states of N_(2.molecule

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Science China(physics,Mechanics & Astronomy) 2005年第4期48卷 385-398页

作者： REN Weiyi1,2. SUN Weiguo1, HOU Shilin3 & FENG Hao4 1. institute of physics, College of Chemical Engineering, Sichuan {2., Chengdu 610065, China 2. institute of Theoretical physics, Xihua normal {2., Nanchong 637002. China 3. Department of physics, China Oceanography {2., Qingdao 2.6003, China 4. College of physics, Sichuan {2., Chengdu 610065, China 1. institute of physics College of Chemical Engineering Sichuan University 610065 Chengdu China 2. institute of Theoretical physics Xihua Normal University 637002 Nanchong China 3. Department of physics China Oceanography University 266003 Qingdao China 4. College of physics Sichuan University 610065 Chengdu China

It is usually very difficult to directly obtain molecular dissociation energy De and all accurate high-lying vibrational energies for most diatomic electronic states using modern experimental techniques or quantum theories, and it is also very difficult to give accurate analytical expression for diatomic molecular dissociation energy. This study proposes a new analytical formula for obtaining accurate molecular dissociation energy based on the LeRoy and Bernstein’s energy expression in dissociation limit. A set of full vibrational energy spectra for some electronic states of N2.molecule are studied using the algebraic method (AM) suggested recently, and the corresponding accurate molecular dissociation energies are evaluated using the proposed new formula and high-lying AM vibrational energies. The results show that the AM spectra and the new theoretical dissociation energies agree excellently with experimental data, and thereby providing a new physical approach to generating accurate dissociation energies for electronic states of diatomic molecules.

关键词： vibrational energy, dissociation energy, nitrogen molecule, algebraic method.

Development of simple sequence repeats (SSR) markers of ramie and comparison of SSR and inter-SSR marker systems

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Progress in Natural Science:Materials International 2005年第02期15卷 42-47页

作者： ZHOU Jianlin1*, JIE Yucheng2., JIANG Yanbo2. ZHONG Yingli1, LIU Yunhai1 and ZHANG Jian1**(1. Department of Biochemistry and Molecular Biology, College of Life Science, hunan normal university,{2., China 2. institute of Bast Fiber Crops, Chinese Academy of Agricultural Science, changsha 410006, China) Department of Biochemistry and Molecular Biology College of Life Science Hunan Normal University Changsha 410081 China. institute of Bast Fiber Crops Chinese Academy of Agricultural Science Changsha 410006 China

Ramie (Boehmeria nivea L.) is an important bast fiber crop. To study genetic background of this species, we isolated and characterized microsatellite markers of ramie. A genomic library containing inserts of rapid amplification of polymorphic DNA (RAPD) fragments was constructed, and screened by PCR amplification using anchored simple sequence repeats as primers. A total of 2. clones were identified as positives, and 13 microsatellite loci were found after sequencing. The polymorphism of these 13 microsatellite loci was examined and the utility of simple sequence repeats (SSR) and inter-SSR (ISSR) marker systems for genetic characterization compared using 19 selected ramie cultivars. Both approaches successfully discriminated the 19 cultivars which differed in the amount of polymorphism detected. The level of polymorphism detected by SSR was 95.0%, higher than that by ISSR (72.3%), but the average polymorphism information content (PIC) of ISSR (0.651) was higher than that of SSR (0.441). The higher PIC value of ISSR suggests that ISSR is more efficient for fingerprinting ramie cultivars than SSR markers. However, because the SSR loci are codominant, they are more suitable for determining the homozygosity levels of ramie, constructing linkage map, quantitative trait loci study of complex traits and marker-assisted selection.

关键词： ramie (Boehmeria nivea L.Gaud) simple sequence repeats inter-simple sequence repeats

HIGH　REGIOSELECTIVE　SYNTHESIS　OF　PARA　MYRAC　ALDEHYDE　CATALYZED　BY　MODIFIED　HY　ZEOLITE　UNDER　MICROWAVE　IRRADIATION

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Chinese Chemical Letters 1996年第8期7卷 697-698页

作者： Dong Hong YIN Du Lin YIN Qian He LI(institute of Fine Catalysis & Synthesis, hunan normal university,{2.) hunan normal UNIV INST FINE CATALYSIS & SYNTHCHANGSHA 410081PEOPLES R CHINA

The Diels-Alder reaction of myrcene and acrolein catalyzed by modified HY zeolitewhich was prepared by mixing HY zeolite and anhydrous ZnCl2.under microwave irradiation wasStudied. High regioselectivity and good yield... 详细信息

关键词： HY CATALYZED MYRAC PARA MODIFIED OF BY ALDEHYDE

Variable Separation Solution for(1+1)-Dimensional Nonlinear Models Related to Schrdinger Equation

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Communications in Theoretical physics 2004年第10期42卷 568-572页

作者： XU Chang-Zhi~(1,2. ZHANG Jie-Fang~11 institute of Nonlinear physics,Zhejiang {2. university,Jinhua 32.004,China2.Department of physics and Mathematics,Jinhua Educational College,Jinhua 32.000,China Department of physics and Mathematics Jinhua Educational College Jinhua 321000 China

A variable separation approach is proposed and successfully extended to the(1+1)-dimensional *** new exact solution of(1+1)-dimensional nonlinear models related to Schr(?)dinger equation by the entranceof three arbitrary functions is *** special types of soliton wave solutions such as multi-soliton wave solution,non-stable soliton solution,oscillating soliton solution,and periodic soliton solutions are discussed by selecting thearbitrary functions appropriately.

关键词： variable separation approach (1+1)-dimensional nonlinear models solution of soliton

Near infrared lights emission of ^(40)Ar^(16+) impacting on metal surfaces

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Science China(physics,Mechanics & Astronomy) 2009年第7期52卷 1021-1026页

作者： ZHANG XiaoAn1,2. XIAO GuoQing2. YANG ZhiHu2. WANG Li1 & ZHAN WenLong2.1 Department of physics, Xianyang {2. university, Xianyang 712.00, China 2.institute of Modern physics, Chinese Academy of Sciences, Lanzhou 730000, China Department of physics Xianyang Normal University Xianyang 712000 China institute of Modern physics Chinese Academy of Sciences Lanzhou 730000 China

The highly charged ion 40Ar16+ with the velocity (kinetic energy EK=150 keV, velocity V=8.5×105 m/s) smaller than Bohr velocity (VBohr=2.9×106 m/s) was found to hove impacts on the surfaces of metals Ni, Mo, Au and Al, and the Ar atomic infrared light lines and X-rays spectra were simultaneously measured. The experimental results show that the highly charged ion that captures electrons is neutralized, and the multiply-excited hollow atom forms. The hollow atom cascade decay radiates lights from infrared to X-ray spectrum. The intensity of infrared lights shows that the metallic work functions play an important role in the neutralization process of highly charged ions during their interaction with metallic surfaces, which verifies the classical over-the-barrier model.

关键词： infrared light lines X-ray neutralization highly charged ions

C^MC^N D-computable state

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Science China(physics,Mechanics & Astronomy) 2008年第9期51卷 1300-1307页

作者： LIU DongDong1,2.& DI YaoMin1 1 School of physics & Electronic Engineering,Xuzhou normal {2.,Xuzhou 2.1116,China 2.School of Mathematics & physics Science,Xuzhou institute of Technology,Xuzhou 2.1008,China 1. School of physics & Electronic Engineering Xuzhou Normal University Xuzhou 221116 China 2. School of Mathematics & physics Science Xuzhou Institute of Technology Xuzhou 221008 China

The notions of D-computable state and D-concurrence are generalized to the CMCN system. A class of D-computable state on CMCN is given and the calculating method of the lower bound of D-concurrence is provided. Th... 详细信息

关键词： quantum entanglement entanglement of formation concurrence D-computable state