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物理学报 2000年第6期49卷 1047-1051页

作者：张华范滇元南通师范学院物理系南通226007 中国科学院上海光学精密机械研究所上海201800

编制了一套用蒙特卡罗方法计算钕玻璃片状放大器内自发辐射放大 (ASE)的模拟计算程序 ,考虑了光线在两大表面不同入射角对反射率的影响 .计算了包边吸收的ASE能量沿周边的分布 ,以便于对放大器热畸变特性的研究 ;

关键词：钕玻璃片状激光放大器自发辐射放大

Effect of solution concentration on the structured order and optical properties of short-chain polyene biomolecules

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Science china(Physics,Mechanics & Astronomy) 2010年第9期53卷 1646-1650页

作者： OUYANG ShunLi1,2.SUN ChengLin1,2.ZHOU Mi1,2.LI DongFei2.WANG WeiWei1,2.QU GuanNan1,LI ZuoWei1,2.GAO ShuQin1 & YANG JianGe3 1 State Key Laboratory of Superhard Materials,Jilin University,Changchun 130012.china 2.college of Physics,Jilin University,Changchun 13002.,china 3 The ordnance Engineering department,Air Force Aviation University,Changchun 13002.,china 1. State Key Laboratory of Superhard Materials Jilin University Changchun 130012 China2. College of Physics Jilin University Changchun 130023 China3. The ordnance Engineering Department Air Force Aviation University Changchun 130022 China

We have measured the Raman spectra and UV-Vis absorption spectra of linear polyene biomolecules(β-carotene and lycopene) in CS2.at low concentrations(10-6-10-10 mol/L).With decreasing concentration,all the carbon-carbon vibrations form a coherent mode in ordered β-carotene and lycopene due to extended π-conjugation that gives strong electron-phonon coupling,which leads to an anomalous experimental *** observed an extremely high Raman scattering cross section(RSCS) and the Raman activities in β-carotene and lycopene are characterized by intensive overtones and ***,the UV-Vis absorption bands become narrower.

关键词： molecular structured order Raman spectroscopy Raman scattering cross section

SYNTHESIS AND PROPERTIES OF NEW MESOGEN-JACKETED LIQUID CRYSTALLINE POLYMERS

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Chinese Journal of Polymer Science 2000年第2期18卷 139-148页

作者： Qi-ding Mi Qi-feng Zhou department of Polymer Science & Engineering, college of {2. Peking University, Beijing 100871, china Peking Univ Coll Chem Dept Polymer Sci & Engn Beijing 100871 Peoples R China

Some new mesogen-jacketed liquid crystalline polymers (MJLCP) with polymer backbones, spacers, and mesogenic units of different structures were synthesized by radical polymerization. The mesomorphic behavior of these polymers was examined using differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). Their liquid crystallinity is influenced by the variation of polymer backbone, spacer, mesogenic unit and its terminal groups. The results show that 1) a more flexible polymer main-chain is more favorable to the formation of a liquid crystal phase, while 2. a flexible spacer will decrease the 'Jacket Effect' and the liquid crystallinity and 3) a subtle modification of the terminal groups on the mesogenic unit may also have a significant influence on properties of the polymers.

关键词： mesogen-jacketed liquid crystalline polymers polymer backbones spacers mesogenic units liquid crystallinity

Benson proper efficiency for vector optimization of generalized subconvexlike set-valued maps in ordered linear spaces

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Journal of Shanghai University(English Edition) 2010年第5期14卷 374-379页

作者：周志昂 department of Mathematics College of SciencesShanghai University college of Mathematics and Statistics Chongqing University of Technology

Several equivalent statements of generalized subconvexlike set-valued map are established in ordered linear spaces. Using vector closure, we introduce Benson proper efficient solution of vector optimization problem. Under the assumption of generalized subconvexlikeness, scalarization, multiplier and saddle point theorems are obtained in the sense of Benson proper efficiency.

关键词： set-valued maps vector closure generalized subconvexlikeness Benson proper efficient solution

EFFECTS OF L-PHENYLALANINE ON THE RADIATION SYNTHESIS OF POLY(N,N'-METHYLENEBISACRYLAMIDE-co-4-VINYLPYRIDINE)(MICRO)GELS

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Chinese Journal of Polymer Science 2005年第6期23卷 643-650页

作者： Qing-de Chen Xing-hai Shen and Hong-cheng Gao department of Applied chemistry,{2. of chemistry and Molecular Engineering,Peking University,Beijing 100871,china Peking Univ Dept Appl Chem Coll Chem & Mol Engn Beijing 100871 Peoples R China

The effects of L-phenylalanine （L-Phe） on the synthesis ofpoly（N,N＇-methylenebisacrylamide-co-4-vinylpyridine）（poly（Bis-co-4-VP））（micro）gels by γ-ray irradiation were studied. The addition of L-Phe could not only decrease the gelation dose （Dg） of the synthesis obviously, but also transform the morphology of copolymer from microgel to gel. In addition, the swelling ability of the （micro）gels was also affected in the presence of L-Phe. The decrease of Dg was ascribed to the effect of pH, while the transformation of the morphology was ascribed to the effect of L-Phe on the stability of the poly（Bis-co-4-VP） microgel. Such an effect was confirmed further as compared with the effects of L-alanine, L-glutamic acid, L-arginine, sulfuric acid and aqueous ammonia.

关键词： L-Phenylalanine γ-Ray irradiation Gelation dose Morphology transformation (Micro)gel

Simulation study of real-time monitor for BEPC-Ⅱ luminosity

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Science china(Technological Sciences) 2010年第5期53卷 1215-1219页

作者： SHAN Qing1,2.WU Jian2.XUE Zhen2.XU ZiZong2.HU Tao3,WANG YiFang3 & WANG XiaoLian2.1 college of Material Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 2.0016,china 2.{2. of Modern Physics,University of Science and Technology of china,Hefei 2.002.,china 3 Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,china college of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing China department of Modern Physics University of Science and Technology of China Hefei China Institute of High Energy Physics Chinese Academy of Sciences Beijing China

A fast and real time luminosity monitor system will be used in the BEPC-Ⅱ(Beijing Electron Positron Collider,china).Photons generated in radiative Bhabha scattering at the interaction point are transformed into charged particles,and then the luminosity of each bunch pair is measured through collecting the Cherenkov light produced by charged particles in fused *** whole process happening in the detector is *** physics acceptance and detection threshold with the monitor accu-racy of 1% are set based on the simulation spectra of photoelectron yield calibrated by e-beam data.

关键词： luminosity BEPC-Ⅱ Cherenkov detector radiative Bhabha

Electrochemical performance of LiFePO_4 cathode material for Li-ion battery

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Rare Metals 2006年第z1期25卷 62-66页

作者： LI Shuzhong LI Chao FAN Yanliang XU Jiaqiang WANG Tao YANG Shuting Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China department of Applied chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Department of Chemical Engineering College of Chemistry and Environmental Science Henan Normal University Xinxiang 453007 China

In the search for improved materials for rechargeable lithium batteries, LiFePO4 offers interesting possibilities because of its low raw materials cost, environmental friendliness and safety. The main drawback with using the material is its poor electronic conductivity and this limitation has to be overcome. Here Al-doped LiFePO4/C composite cathode materials were prepared by a polymer-network synthesis technique. Testing of X-ray diffraction, charge-discharge, and cyclic voltammetry were carried out for its performance. Results show that Al-doped LiFePO4/C composite cathode materials have a high initial capacity, good cycle stability and excellent low temperature performance. The electrical conductivity of LiFePO4 material can be obviously improved by doping Al. The better electrochemical performances of Al-doped LiFePO4/C composite cathode materials have a connection with its conductivity.

关键词： lithium ion batteries LiFePO4 doping electrochemical performance

On (2.m + 1)-variable symmetric Boolean functions with submaximum algebraic immunity 2.(m-1)

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Science china Mathematics 2009年第1期52卷 17-28页

作者： LIAO QunYing1, LIU Feng2.& FENG KeQin2.1 college of Mathematics and Software Sciences, Sichuan Normal University, Chengdu 610066, china 2.{2. of Mathematical Sciences, Tsinghua University, Beijing 100084, china college of Mathematics and Software Sciences Sichuan Normal University Chengdu 610066 China department of Mathematical Sciences Tsinghua University Beijing 100084 China

All (2. +1)-variable symmetric Boolean functions with submaximal algebraic immunity 2.-1 are described and constructed. The total number of such Boolean functions is 32.·2.m-3 +3m-2.· 2. - 2.for m≥2.

关键词： symmetric Boolean function algebraic immunity cryptography

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诸葛菜下胚轴高频率植株再生因素研究

四川大学学报（自然科学版） 2000年第S1期37卷 26-29页

作者：徐怀亮罗鹏陈艳红四川大学生命科学院成都610064 南通师范学院生物系南通226007

诸葛菜外植体再生力较强 ,可以作植物体细胞遗传学的实验材料 .以生长于两种不同MS培养基 (含或不含激素 )上的诸葛菜无菌苗下胚轴为外植体 ,研究不同外植体 ,不同激素组合和硝酸银对下胚轴高频率再生的影响效应 .结果如下 :激素的影响... 详细信息

诸葛菜外植体再生力较强 ,可以作植物体细胞遗传学的实验材料 .以生长于两种不同MS培养基 (含或不含激素 )上的诸葛菜无菌苗下胚轴为外植体 ,研究不同外植体 ,不同激素组合和硝酸银对下胚轴高频率再生的影响效应 .结果如下 :激素的影响效应最显著 ,最适激素组合为MB1N ,植株再生频率高达 92..51% .硝酸银对再生频率较高 ,激素组合 (6 BA +NAA)作用效应不明显 ,激素组合 (6 BA +2.,4 D)只提高下胚轴再生频率 .不同外植体作用效应的差异只表现于培养基MB1N和MB2.中 .由加激素培养基而来的外植体在MB1N和MB2.中均表现高频再生率 .

关键词：诸葛菜下胚轴植株再生率影响因素

Synthesis of Macrocyclic Arsinous Acid Esters

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Chinese Chemical Letters 1999年第12期10卷 0-0页

作者： Xin You CHENI Ying Qin YANG Wen Tian TAO(1’department of chemistry, Xiaogan Teachers {2., Hubei 432.00)(2.0} of chemistry, Xinyang Teachers {2., Henan 464000)(3department of chemistry, Wuhan University, Wuhan 430072. Xiaogan Teachers Coll Dept Chem Hubei 432100 Peoples R China Xinyang Teachers Coll Dept Chem Henan 464000 Peoples R China Wuhan Univ Dept Chem Wuhan 430072 Peoples R China

The reactions of the his (dimethylamino) alkylarsine with dids lead to the formations ofmacrocyclic arsinous acid esters. The synthesis of title compounds was described and theirslructures were characterized by elemen... 详细信息

关键词： Bis (dimethylamino) alkylarsine macrocyclic arsinous acid ester synthesis.