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Matrix Methods for Analysing Optical Resonators

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光电子.激光 1989年第2期 93-95页

作者： L(u|¨) BaidaDepartment of physics,sichuan university, chengdu,Tel. 554.1-962

This paper deals with the applications of matrix methods to optical resonators. It has been shown that the important characteristics of resonators i.e.,mode characteristic parameters, misalignment sensitivity,condition for dynamic stability etc, can be expressed in terms of ABCD-matrix elements or resonator g parameters in general, some typicalresonators are analysed in detail。

关键词： Matrix Methods for Analysing Optical Resonators mode

Fast Fourier Transform-based Support Vector Machine for Prediction of G-protein Coupled Receptor Subfamilies

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Acta Biochimica et Biophysica Sinica 2005年第11期37卷 759-766页

作者： Yan-Zhi GUO Meng-Long LI Ke-Long WANG Zhi-Ning WEN Min-Chun LU Li-Xia LIU Lin JIANG college of Chemistry,sichuan university,chengdu 610064.{4. college of Chemistry Sichuan UniversityChengdu 610064 China

Although the sequence information on G-protein coupled receptors(GPCRs)continues togrow,many GPCRs remain orphaned(*** specificity unknown)or poorly characterized with littlestructural information available,so an automated and reliable method is badly needed to facilitate the identifi-cation of novel *** this study,a method of fast Fourier transform-based support vector machinehas been developed for predicting GPCR subfamilies according to protein’s *** classifyingClass B,C,D and F subfamilies,the method achieved an overall Matthew’s correlation coefficient andaccuracy of 0.95 and 93.3%,respectively,when evaluated using the jackknife *** method achieved anaccuracy of 100% on the Class B independent *** results show that this method can classify GPCRsubfamilies as well as their functional classification with high accuracy.A web server implementing theprediction is available at http://***/blast/Pred-GPCR.

关键词： G-protein coupled receptor subfamily fast Fourier transform support vector machine prediction

The crystal change and "excess heat" produced by long time electrolysis of heavy water with titanium cathode

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原子与分子物理学报 2003年第1期20卷 69-74页

作者： SUN Yue, ZHANG Qing-fu, GOU Qing-quan (Institute of Atomic and Molecular physics, sichuan university, chengdu 61.065, china) Institute of Atomic and Molecular physics Sichuan University Chengdu 610065

According to the theory given in the paper , the long time electrolysis experiment with titanium cathode in heavy water (D 2O) were done for many times by using the open-loop multi-parameters electrolysis calorimetry system, which is established by us. The specialty is that the cathode is titanium rod and the anode is platinum wire. The early experiment result is still repeated in our recent experiment. The obvious "excess heat" phenomenon can take place only when the electrolysis last more than ten days and amount of "excess heat" increased with the electrolysis time. The "excess heat" can also be obtained from the "boiling to dry" experiment. In the recent experiment, we obtain the results that the amount of "excess heat" is about 3.6 times the input energy, the "excess heat" power is 76.5 W, and the "excess heat" power density is 121.7 W/cm 3. After the electrolysis, the crystal structure of the Ti cathode was measured with x-ray diffraction apparatus. We found that the crystal structure of Ti cathode was changed to face-centered cubic structure of TiD 2 from its hexagonal structure. This result is in agreement with the Gou’s theory mentioned in reference .

关键词：重水电解实验热力学物态变化晶体结构热量测定原子核物理聚变

Effects of Denaturation and Amino Acid Modification on Fluorescence Spectrum and Hemagglutinating Activity of Hericium erinaceum Lectin

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Acta Biochimica et Biophysica Sinica 2004年第5期36卷 343-350页

作者： Meng GONG, Jie AN, Hong-Zhou Lü, Chuan-Fang WU, Yi-Jin LI, Jing-Qiu CHENG, and Jin-Ku BAO*college of Life Sciences, sichuan university, chengdu 610064. china college of Life Sciences Sichuan University Chengdu 610064 China

A sialic acid-binding lectin (Hericium erinaceum lectin, HEL), isolated from fresh fruiting bodies of Hericium erinaceum, was treated with various temperature and pH to investigate its fluorescence spectra and hemagglutinating activity. It was found that the hemagglutinating activity of HEL was relatively steady below 60 °C and at pH from 6 to 11, and the change of hemagglutinating activity was relative to the change of hydrophobic areas where tryptophan residues located. In fluorescence quenching study of HEL by acrylamide and KI, it was indicated that nearly all the tryptophan residues of HEL located on the surface of the molecule, and most of them were in hydrophobic areas or negatively charged areas. Chemical modifica- tion of HEL proved that there were about twelve tryptophan residues in a HEL molecule and all of them were located on the surface or in the shallow groove of the molecule, and eight of them were essential for hemag- glutinating activity; aspartic acid or glutamic acid residues were involved in maintaining the crucial confor- mation of activity center and made great contribution to the hemagglutinating activity of HEL, but they could not touch the sialic acid molecule directly; tyrosine residues also played a role in the hemagglutinating activ- ity of HEL; while arginine, serine, threonine, histidine residues had no effect on the hemagglutinating activity of HEL.

关键词： sialic acid-binding lectin Hericium erinaceum lectin fluorescence spectrum and fluores- cence quenching hemagglutinating activity chemical modification

Rose solutions with three petals for planar 4.body problems

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Science china Mathematics 2010年第12期53卷 3085-3094页

作者： DENG ChunHua 1,2 , ZHANG ShiQing 1, & ZHOU Qing 3 1 Yangtze Center of Mathematics and college of Mathematics, sichuan university, chengdu 610064. china 2 Faculty of Mathematics and {4., Huaiyin Institute of Technology, Huai’an 223001, china 3 Department of Mathematics, East china Normal university, Shanghai 200062, china Yangtze Center of Mathematics and college of Mathematics Sichuan University Chengdu China Faculty of Mathematics and physics Huaiyin Institute of Technology Huai’an China Department of Mathematics East China Normal University Shanghai China

For planar Newtonian 4.body problems with equal masses, we use variational methods to prove the existence of a non-collision periodic choreography solution such that all bodies move on a rose-type curve with three pet... 详细信息

关键词： 4.body problems with Newtonian potentials rose solutions with three petals winding numbers variational minimization methods

Electrical property of 8-mol% yttria-stabilized zirconia electrolyte by spark-plasma sintering

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Science china(Technological Sciences) 2004年第5期47卷 569-576页

作者： JIAN Jiawen1,2, CHANG Aimin3, YANG Bangchao2 & ZHANG Yikang4.1. The School of Information Science Engineering, Ningbo university, Ningbo 315211, china 2. The School of Microelectronics and Solid-state Electronics, university of Electronic Science and Tech-nology of china, {4. 610054. china 3. The Xinjiang Technical Institute of physics and Chemistry, Chinese Academy of Sciences, Urumqi 830022, china 4. Hongtak ({4.) Electronic Co., Ltd, {4. 61004., china Correspondence should be addressed to Jian Jiawen The School of Information Science Engineering Ningbo University Ningbo China The School of Microelectronics and Solid-state Electronics University of Electronic Science and Technology of China Chengdu China The Xinjiang Technical Institute of physics and Chemistry Chinese Academy of Sciences Urumqi China Hongtak (chengdu) Electronic Co. Ltd Chengdu China

Spark-plasma sintering (SPS) process was used to sinter ZrO2 (8Y) powders, and a relative density of 99% has been reached at a low temperature (1350°C) and short dwelling time (10 min) compared to the conventional sintered identical samples (14.0°C 4.h)(CS). By the X-ray diffraction (XRD) patterns, the microstructure of the SPS pellet and CS pellet are both indexed by the cubic unit cell (Fm3m). The finer crystallite size (D111) of the SPS pellet is 154.nm and D111 of the CS pellet is more than 1 μm. The AC impedance spectroscopy shows that the ionic conductivity of SPS pellet is different from that of CS pellet. The activation energy for the SPS ceramics, estimated from the slope in the range of 4.0–800°C, was 91 kJ mol?1, which is in good agreement with CS pellet (96 kJ mol?1), indicating that the conduction mechanism in SPS ceramics is similar to that in CS ceramics.

关键词： yttria-stabilized zirconia electrolyte, spark-plasma sintering, AC impedance.

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用能量自洽法研究异核双原子分子的势能曲线

物理学报 2003年第2期52卷 307-311页

作者：李新喜孙卫国冯灏四川大学化学工程学院成都610065 四川大学原子与分子物理研究所

用研究双原子分子解析势能函数的新方法———ECM方法进一步研究了一些异核双原子分子的电子基态和激发态 :CIF分子的A3Π1 和B0 + (3Π)态 ,CH分子的X2 Π态 ,BH分子的X1 Σ+ 态 ,XeO分子的d1 Σ+ 态 ,LaF分子的X1 Σ+态 ,Li7D分子的X1... 详细信息

用研究双原子分子解析势能函数的新方法———ECM方法进一步研究了一些异核双原子分子的电子基态和激发态 :CIF分子的A3Π1 和B0 + (3Π)态 ,CH分子的X2 Π态 ,BH分子的X1 Σ+ 态 ,XeO分子的d1 Σ+ 态 ,LaF分子的X1 Σ+态 ,Li7D分子的X1 Σ+ 态 ,NaRb分子的X1 Σ+ 态 ,KRb分子的 (2 ) 3Σ+ 和 2 1 Π态等 .获得的势能曲线表明 ,ECM势能很好地符合Rydberg Klein Rees(RKR)值 ,得到了比Morse势 ,huxley Murrell Sorbie(HMS)势更令人满意的结果 .而且在分子渐近区和分子离解区域 ,ECM方法还能得到RKR可能缺乏的可靠物理数据 .

关键词：热能曲线能量自洽双原子分析势能函数电子态 ECM

Two new C_(19)-diterpenoid alkaloids from roots Aconitum hemsleyanium var. atropurpureum

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Chinese Chemical Letters 2007年第6期18卷 704-707页

作者： Pei Tang, Dong Lin Chen, Xi Xian Jian, Feng Peng Wang Department of Chemistry of Medicinal Natural Products, West china college of Pharmacy, sichuan university, chengdu 61004., china Department of Chemistry of Medicinal Natural Products West China College of Pharmacy Sichuan University Chengdu 610041 China

A new franchetine-type C19-diterpenoid alkaloid 3-hydroxyfranchetine 1 and a new aconitine-type C19-diterpenoid alkaloid atropurpursine 2 have been isolated from the roots of Aconitum hemsleyanium var. atropurpureum. ... 详细信息

关键词： Aconitum hemsleyanium var. atropurpureum Rranunculaceae C19-diterpenoid alkaloid 3-Hydroxyfranchetine Atropurpursine

TRANSIENT QUEUE SIZE DISTRIBUTION SOLUTION OF GEOM/G/1 QUEUE WITH FEEDBACK-A RECURSIVE METHOD

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Journal of Systems Science & Complexity 2009年第2期22卷 303-312页

作者： Chuanyi LUO Yinghui TANG Cailiang LI Department of Economic Mathematics Southwestern University of Finance and Economics Chengdu 610074China. School of Mathematics and Software Science Sichuan Normal University Chengdu 610066 China. Department of Information and Computer Science Chengdu Electron-Mechanical College Chengdu 610031China.

This paper considers the Geom/G/1 queueing model with feedback according to a late arrival system with delayed access （LASDA）. Using recursive method, this paper studies the transient property of the queue size from the initial state N（0＋） = i. Some new results about the recursive expression of the transient queue size distribution at any epoch n＋ and the recursive formulae of the equilibrium distribution are obtained. Furthermore, the recursive formulae of the equilibrium queue size distribution at epoch n-, and n are obtained, too. The important relations between stationary queue size distributions at different epochs are discovered （being different from the relations given in M/G/I queueing system）. The model discussed in this paper can be widely applied in all kinds of communications and computer network.

关键词： Discrete time queue equilibrium distribution feedback recursive expression transient distribution.