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Self-trapping and Self-focusing of Light Beams in Uniaxial Crystals

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Chinese Journal of Lasers 1996年第4期B5卷 313-318页

作者： GUO Qi(Institute of Quantum Electronics,south china normal university,guangzhou 510631, china) south china normal Univ Guangzhou China

Ｓｅｌｆ－ｔｒａｐｐｉｎｇａｎｄＳｅｌｆ－ｆｏｃｕｓｉｎｇｏｆＬｉｇｈｔＢｅａｍｓｉｎＵｎｉａｘｉａｌＣｒｙｓｔａｌｓ￥ＧＵＯＱｉ（ＩｎｓｔｉｔｕｔｅｏｆＱｕａｎｔｕｍＥｌｅｃｔｒｏｎｉｃｓ，ＳｏｕｔｈＣｈｉｎａＮｏ... 详细信息

Ｓｅｌｆ－ｔｒａｐｐｉｎｇａｎｄＳｅｌｆ－ｆｏｃｕｓｉｎｇｏｆＬｉｇｈｔＢｅａｍｓｉｎＵｎｉａｘｉａｌＣｒｙｓｔａｌｓ￥ＧＵＯＱｉ（ＩｎｓｔｉｔｕｔｅｏｆＱｕａｎｔｕｍＥｌｅｃｔｒｏｎｉｃｓ，ＳｏｕｔｈＣｈｉｎａＮｏｒｍａｌＵｎｉｖｅｒｓｉｔｙ，Ｇｕ...

关键词： self-trapping self-focusing uniaxial crystal

OSCILLATIONS AND GLOBAL ATTRACTIVITY OF PERIODIC SOLUTION IN A MODEL OF RESPIRATORY DYNAMICS

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生物数学学报 1995年第1期10卷 14-20页

作者： Weng Peixuan(south china normal university,guangzhou 510631) 华南师范大学广东广州

In this paper，the author obtained sufficient conditions for the global attractivity of the positive periodic solution P（t）of a model in respiratory *** author also investigated the oscillations about P（t）．

关键词： Respiratory dynamics Periodic solution Oscillation Global attractivity

Imaging theory of nonlinear second harmonic and third harmonic generations in confocal microscopy

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Science china(Physics,Mechanics & Astronomy) 2004年第1期47卷 8-16页

作者： TANG Zhilie1, XING Da2 & LIU Songhao2 1. Department of Physics, south china normal university, guangzhou 510631, china 2. school for Information and Optoelectronic Science and Engineering, south china normal university, guangzhou 510631, china Correspondence should be addressed to Tang Zhilie (email: tangzhl@***) Received April 23, 2003 1. Department of Physics South China Normal University 510631 Guangzhou China 2. school for Information and Optoelectronic Science and Engineering South China Normal University 510631 Guangzhou China

The imaging theory of nonlinear second harmonic generation (SHG) and third harmonic generation (THG) in confocal microscopy is presented in this paper. The nonlinear effect of SHG and THG on the imaging properties of confocal microscopy has been analyzed in detail by the imaging theory. It is proved that the imaging process of SHG and THG in confocal microscopy, which is different from conventional coherent imaging or incoherent imaging, can be divided into two different processes of coherent imaging. The three-dimensional point spread functions (3D-PSF) of SHG and THG confocal microscopy are derived based on the nonlinear principles of SHG and THG. The imaging properties of SHG and THG confocal microscopy are discussed in detail according to its 3D-PSF. It is shown that the resolution of SHG and THG confocal microscopy is higher than that of single- and two-photon confocal microscopy.

关键词： second harmonic generation, third harmonic generation, confocal microscopy, three-dimensional point spread function.

Transitional function of DG to CA3 in the hippocampus

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Progress in Natural Science:Materials International 2007年第12期17卷 1436-1444页

作者： Yan Chuankui1 and Liu Shenquan2(1. Department of Mathematics, Hangzhou normal university, Hangzhou 310036, china 2. Department of Applied Mathematics, school of mathematical sciences, south china university of Technology, guangzhou 510640, china) Department of Mathematics Hangzhou Normal University Hangzhou 310036 China Department of Applied Mathematics School of Mathematical Sciences South China University of Technology Guangzhou 510640 China

Using single cell channel model, the transmission features of CA3-DG network in the hippocampus are investigated. The influence of the stimulation on discharge pattern of pyramidal neurons is analyzed, which shows that it starts with period spiking discharges, followed by period-doubling bifurcation to chaos, and period 3 discharge evolving into chaos, and ultimately a period of bursting discharges. By the synaptic model, the CA3-DG network model is constructed, which analyzes the summation of postsynaptic currents in the network, the influence of postsynaptic current on discharge rhythm as well as the mechanism of bursting discharges. The strong capacity of spatiotemporal encoding in the network indicates the features of CA3 network during the information transmission process in the hippocampus. The modeling result with time delay of the synaptic transmission is in accordance with the experimental phenomena of action potential in the hippocampus.

关键词： hippocampus CA3-DG period-doubling bifurcation chaos.

ON THE INVERSE IMAGE SET OF RATIONAL FUNCTIONS

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Acta Mathematica Scientia 2007年第3期27卷 541-548页

作者：孙道椿 Department of Mathematics South China Normal University

This article studies the inverse image of rational functions. Several theorems are obtained on the Julia set expressed by the inverse image, and a mistake is pointed out in ***＇ theorem incidentally.

关键词： Rational dynamical system Julila set Fatou component

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番禺市桥先锋社区微改造,广州,广东,中国

世界建筑 2024年第4期 50-53页

作者： guangzhou Atelier cnS Architectural Design Limited Company school of Architecture, south china university of Technology guangzhou Urban Planning and Design Company Limited 广州市竖梁社建筑设计有限公司华南理工大学建筑学院广州市城市规划设计有限公司

先锋社区位于市桥之心,自古以来承担着番禺政商中心的城市职能,是千年番禺历史文化的缩影,拥有显赫的宗族聚落文化和丰富的工商贸易文化遗存。21世纪以来,因番禺积极融入广州主城区发展,向北形成经济、教育、居住集聚区,导致番禺城市重... 详细信息

先锋社区位于市桥之心,自古以来承担着番禺政商中心的城市职能,是千年番禺历史文化的缩影,拥有显赫的宗族聚落文化和丰富的工商贸易文化遗存。21世纪以来,因番禺积极融入广州主城区发展,向北形成经济、教育、居住集聚区,导致番禺城市重心北移,市桥的功能和空间日渐衰落,成为番禺城市发展的洼地,旧日荣光不再。在中国全面推进城镇老旧小区改造的背景下,本项目以历史文化保护与集体回忆再现为导向,探究不同于一般老旧社区微改造的新路径、新思路。

关键词：历史文化保护老旧社区城市职能微改造集聚区集体回忆重心北移文化遗存

Progress in the study of molecular organized assemblies by dielectric relaxation spectroscopy

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Progress in Natural Science:Materials International 2006年第3期16卷 221-230页

作者： ZHAO Kongshuang, HE Kejuan and WEI Suxiang (Department of Chemistry, Beijing normal university, Beijing 100875, china Department of Chemistry, south china normal university, guangzhou 510631, china) [a]Department of Chemistry Beijing Normal University Beijing China [b]Department of Chemistry South China Normal University Guangzhou China

Because dielectric spectroscopy covers a great many problems in physical and chemical systems occurring in an extremely wide frequency range, the study of this method plays an important role in physical chemistry. As an effective tool to detect inner properties of substance systems, the dielectric spectroscopy method is widely used in chemical systems and has been dramatically developed in recent decade. This review paper describes the applications of the dielectric spectroscopy in the chemical field, and main concentrations are focused on the micelle, microemulsion and other so-called molecular organized assemblies. Some dielectric principles and models proposed for these systems are introduced. In addition, recent technical developments in dielectric spectroscopy and developing trend of this method in other chemical systems are reviewed.

关键词： dielectric relaxation micelle microemulsion vesicle relaxation time.

On E-Unitary Regular Semigroups

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Acta Mathematica Sinica,English Series 2002年第3期18卷 565-578页

作者： Yong Hua LI Department of Mathematics. south, china normal university. guangzhou 510631, P. R. china Department of Mathematics South China Normal University Guangzhou P. R. China

In this paper we define a concept of a PO-sextet and describe a structure of E-unitary regular semigroups.

关键词： Orthodox semigroup E-unitary regular semigroup Sextet-set PO-semigroup

The　photon　theory　hypothesis　about　photon　tunneling　microscope＇s　subwavelength　resolution

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光电子·激光 1996年第4期7卷 236-239+259页

作者： Yanbin Zhu Junfu Ma(Laser Li fe Science Institute, south china normal university, guangzhou 510631,P.R.china) 华南师范大学激光生命科学所广东广州

Ｔｈｅｐｈｏｔｏｎｔｈｅｏｒｙｈｙｐｏｔｈｅｓｉｓａｂｏｕｔｐｈｏｔｏｎｔｕｎｎｅｌｉｎｇｍｉｃｒｏｓｃｏｐｅ＇ｓｓｕｂｗａｖｅｌｅｎｇｔｈｒｅｓｏｌｕｔｉｏｎ￥ＹａｎｂｉｎＺｈｕ；ＪｕｎｆｕＭａ（ＬａｓｅｒＬｉｆｅ... 详细信息

Ｔｈｅｐｈｏｔｏｎｔｈｅｏｒｙｈｙｐｏｔｈｅｓｉｓａｂｏｕｔｐｈｏｔｏｎｔｕｎｎｅｌｉｎｇｍｉｃｒｏｓｃｏｐｅ＇ｓｓｕｂｗａｖｅｌｅｎｇｔｈｒｅｓｏｌｕｔｉｏｎ￥ＹａｎｂｉｎＺｈｕ；ＪｕｎｆｕＭａ（ＬａｓｅｒＬｉｆｅＳｃｉｅｎｃｅＩｎｓｔｉｔｕｔｅ，...

关键词： tunneling hypothesis microscope about resolution subwavelength theory The photon