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Small World Properties Generated by a New Algorithm Under Same Degree of All Nodes

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Communications in Theoretical Physics 2006年第5期45卷 950-954页

作者： li yong FANG Jin-qing liU Qiang liANG yong China Institute of Atomic Energy P.O. Box 275-81 Beijing 102413 China

Based on the model of the same degree of all nodes we proposed before, a new algorithm, the so-called “spread all over vertices” （SAV） algorithm, is proposed for generating small-world properties from a regular ring lattices. During randomly rewiring connections the SAV is used to keep the unchanged number of links. Comparing the SAV algorithm with the Watts-Strogatz model and the “spread all over boundaries” algorithm, three methods can have the same topological properties of the small world networks. These results offer diverse formation of small world networks. It is helpful to the research of some applications for dynamics of mutual oscillator inside nodes and interacting automata associated with networks.

关键词： small world network the same degree of all nodes in the network “spread all over vertices”algorithm average shortest path length average clustering coefficient

Two new glycosides from the seeds of Cassia obtusifolia

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Chinese Chemical Letters 2009年第9期20卷 1097-1099页

作者： Cun Zhang Gui liu li yong qing Xiao li li Zhen Pang Institute of Traditional Chinese Materia Madica Chinese Academy of Chinese Medical Sciences Beijing 100700 China

Two new glycosides, nor-rubrofusadn-6-O-β-D-（6＇-O-acetyl）glucopyranoside （1） and 1-desmethylaurantio-obtusin-2-O-β-D- glucopyranoside （2） were isolated from the seeds of Cassia obtusifolia and their structures were established by chemical and spectral evidences. 2009 yong qing Xiao. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Cassia obtusifolia Nor-rubrofusarin-6-O-β-D-(6'-O-acetyl)glucopyranoside 1-Desmethylaurantio-obtusin-2-O-β-D-glucopyranoside

Excited State Properties of Fluorine-Substituted Hexabenzocoronene： A Quantum-Chemical Characterization

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Communications in Theoretical Physics 2006年第2X期46卷 229-232页

作者： li Yuan-Zuo SUN Yu li yong-qing MA Feng-Cai Department of Physics Liaoning University Shenyang 110036 China

The first fluorine-substituted hexabenzocoronene has been synthesized and its electronic structure and optical properties have been reported [Q. Zhang, et al., Org. Lett. 7 （2005） 5019]. In this letter, the electronic structure and excited state properties of the fluorine-substituted hexabenzocoronene are studied with quantum chemistry method as well as the transition and the charge difference densities. The transition densities show the orientations and strength of the dipole moments and the charge difference densities reveal the orientation and results of the intramolecular charge transfer. The calculated transition energies and oscillator strengths are consistent with the experimental data, and the theoretical results of transition and charge difference densities are valuable to understanding the excited state properties of the fluorine-substituted hexabenzocoronene.

关键词： intramolecular charge transfer fluorine-substituted hexabenzocoronene transition densities charge difference densities

Collisional Quantum Interference on Rotational Energy Transfer： Relation Between Integral Interference Angle and Rotational Quantum Number in Na2（A^1∑u^＋,ν=8～b^3∏0u,ν=14）-Na System

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Communications in Theoretical Physics 2006年第1X期46卷 123-129页

作者： WANG Wei-li SONG Peng li yong-qing MIAO Gang MA Feng-Cai School of Science Liaoning Technical University Fuxin 123000 China Dalian Institute of Chemical Physics the Chinese Academy of Sciences Dalian 16023 China Department of Physics Liaoning University Shenyang 110036 China

Collisional quantum interference （CQI） on rotational energy transfer was observed in Na2（A^1∑u^＋,ν=8～b^3∏0u,ν=14） system in collision with Na [Chem. Phys. Lett. 318 （2000） 107], and the degree of the interference was measured. The integral interference angle was obtaJned through theoretical calculation. We will research the factors that have effect on collisional quantum interference on rotational energy transfer in Na2（A^1∑u^＋,ν=8～b^3∏0u,ν=14）-Na system. Basing on the time-dependent first order Born approximation, and taking into account the anlsotroplc Lennard Jones interaction potentials and ＂straight-line＂ trajectory approximation, we obtain the factors that have effect on CQI in Na2-Na system, and obtain the relation between the integral interference angle and rotational quantum number.

关键词： rotational energy transfer interference angle rotational quantum number

Further Study of A-Related Quantum Interference of H-State Diatomic on Collision-Induced Rotational Energy Transfer

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Communications in Theoretical Physics 2005年第2X期44卷 347-352页

作者： li yong-qing SONG Peng CHEN Yue-Hui WANG Wei-li MA Feng-Cai Department of Physics Liaoning University Shenyang 110036 China

In our previous theoretical studies [Meng-Tao Sun, yong-qing Lee, and Feng-Cai Ma, Chem. ***. 371 （2003） 342], we have reported the quantum interference on collision-induced rotational energy transfer on CO （A ^1 Π,v = 3） with inert gases, which originates from the difference between the two A-related collision potential energy surfaces. The interference angle, which measures the degree of coherence, is presented in this paper. Based on the time-dependent first order Born approximation, taking into account the anisotropic Lennard-Jones interaction potentials, the relation of the interference angle with the factors, including experimental temperature, partner, and rotational quantum number, are obtained. The changing tendencies with them are discussed. This theoretical model is important to understanding and performing this kind of experiment.

关键词： quantum interference rotational energy transfer interference angle

A new phenanthraquinone from the roots of Peucedanum praeruptorum

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Chinese Chemical Letters 2010年第7期21卷 816-817页

作者： Cun Zhang li li yong qing Xiao Wen li Xiao Jie Yin Guo Fang Tian Dong Dong Chen Yun Wang Institute of Chinese Materia Madica China Academy of Traditional Chinese MedicineBeijing 100700China

A new compound,9,10-dihydrophenanthrinic acid,9,10-dione-3,4-methylenedioxy-8-methoxy（1） was isolated from the roots of Peucedanum praeruptorum Dunn on the basis of spectral evidences.

关键词： Peucedanum praeruptorum 9 10-Phenanthraquinone 9 10-Dihydrophenanthrinic acid 9 10-Dione-3 4-methylenedioxy-8-methoxy

Infinitely Many Sign-changing Solutions for a Schrdinger Equation in R^N

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数学进展 2006年第6期35卷 758-760页

作者：洪明理李永青 Department of Mathematics and Physics Fujian University of Technology Department of Mathematics Fujian Normal University

We consider the existence of infinitely many sign-changing solutions for the nonlinear time-independent schrodinger equations of the form where Vλ(x) =λa(x) + 1. This problem originates from various problems in physics and mathematical physics. In constructive field theory, (1.1) is called a nonlinear Euclidean scalar field equation. In chemical dynamics, a solution of (1.1) is a stationary state of the reaction diffusion

关键词： dinger Equation in R^N