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Blow-UP of Solutions of Some Nonlinear Elastic Wave Equations

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Communications in Nonlinear Science and Numerical Simulation 1998年第2期 6-8页

作者： Shuhong HE and Zhengde DAI (department of mathematics{2. ,{3., China) E mail: lubn@***

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Ｉｎｓｏｍｅｐｒｏｂｌｅｍｓｏｆｎｏｎｌｉｎｅａｒｗａｖｅｐｒｏｐａｇａｔｉｏｎｉｎｗａｖｅｇｕｉｄｅｓｔｈｅｉｎｔｅｒａｃｔｉｏｎｏｆｗａｖｅｇｕｉｄｅｓａｎｄｔｈｅｅｘｔｅｒｎａｌｍｅｄｉｕｍａｎｄｔｈｅｒｅｆｏｒｅｔｈｅｐｏｓｓｉｂｉｌｉｔｙｏ...

关键词： nonlinear strain wave equations blow up

Wave Solutions for the GinzburgLandau-BBM Equations (I)

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Communications in Nonlinear Science and Numerical Simulation 1998年第4期3卷 218-221页

作者： Murong JIANG and Yawei TIAN(department of mathematics,{2.,{3., China)(Graduate School of China Academy of Engineering and Physics, P.O.Box 2.10 Beijing100081, China)(Computer department, Shaanxi Normal university, Xi’an 710062. department of mathematics Yunnan University Kunming 650091 China Graduate School of China Academy of Engineering and Physics P.O.Box 2010 Beijing 100081 China Computer department Shanxi Normal University Xi'an 710062 China

In this paper, the stability of plane wave solutions for the GinzburgLandau-BBM equations are considered. When the coefficients are suitably constrained,these waves are stable.

关键词： stability the Ginzburg- Landau- BBM equations plane wave solutions

Genomic organization and sequence analysis of the vomeronasal receptor V2. genes in mouse genome

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Chinese Science Bulletin 2007年第3期52卷 336-342页

作者： YANG Hui1,2.& Zhang YaPing1,3.1 Laboratory of Cellular and Molecular Evolution, kunming Institute of Zoology, Chinese Academy of Sciences, kunming 6502.3. China 2.Graduate {2. of the Chinese Academy of Sciences, Beijing 100049, China 3.Laboratory for Conservation and Utilization of Bio-resources,{3., kunming 650091, China Laboratory of Cellular and Molecular Evolution Kunming Institute of ZoologyChinese Academy of Sciences Kunming 650223 China

Two multigene superfamilies, named V1R and V2., encoding seven-transmembrane-domain G-protein coupled receptors (GPCRs) have been identified as pheromone receptors in mammals. Three V2. gene families have been described in mouse and rat. Here we screened the updated mouse genome se- quence database and finally retrieved 63.putative functional V2. genes including three newly identified genes which formed a new additional family. We described the genomic organization of these genes and also characterized the conservation of mouse V2. protein sequences. These genomic and se- quence information we described are useful as part of the evidence to speculate the functional domain of V2.s and should give aid to the functionality study in the future.

关键词：大白鼠基因组犁鼻受体2 多基因超家族序列分析

LOCAL INFLUENCE IN DISCRIMINANT ANALYSIS

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Systems Science and Mathematical Sciences 1995年第1期8卷 27-36页

作者： WANG Xueren REN Shiquan SHI Lei (department of Statistics, yunnan university,{2., China) 云南大学统计系云南昆明

ＬＯＣＡＬＩＮＦＬＵＥＮＣＥＩＮＤＩＳＣＲＩＭＩＮＡＮＴＡＮＡＬＹＳＩＳＷＡＮＧＸｕｅｒｅｎ；ＲＥＮＳｈｉｑｕａｎ；ＳＨＩＬｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＳｔａｔｉｓｔｉｃｓ，ＹｕｎｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｋｕｎ... 详细信息

ＬＯＣＡＬＩＮＦＬＵＥＮＣＥＩＮＤＩＳＣＲＩＭＩＮＡＮＴＡＮＡＬＹＳＩＳＷＡＮＧＸｕｅｒｅｎ；ＲＥＮＳｈｉｑｕａｎ；ＳＨＩＬｅｉ（ＤｅｐａｒｔｍｅｎｔｏｆＳｔａｔｉｓｔｉｃｓ，ＹｕｎｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｋｕｎｍｉｎｇ６５００９１，Ｃｈｉｎａ）...

关键词： Discriminant analysis generalized cook statistic perturbation scheme local influence.

Morphology and electrical conductivity of PACS

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Journal of Environmental Sciences 2000年第3期12卷 319-324页

作者： GAO Bao\|yu\+1, LIU Zong\|gang\+2. YUE Qin\|yan\+3. ZHAO Hua\|zhang\+3.(1. department of Environmental Engineering, Shandong university, Jinan 2.0100, China 2. Environmental Monitoring Station of Huaiyin, Jinan 2.002., China 3. department of Environ 山东大学山东济南 2 50 1 0 0 山东济南市槐荫区环境监测山东济南 2 50 0 2 2

Polyaluminium chlorides with sulfate ion(PACS) were prepared by using AlCl 3.6H 2., Al(SO 4) 3.18H 2. and Na 2.O 3.as raw materials. The effects of basicity ( r ), Al 3. /SO 4 2. molar ratio and aging time on the morphology of PACS were observed by transmission electrical microscope. The influence of aging time on charge neutralization and coagulation effect of PACS was studied. The effects of basicity ( r ), Al 3. /SO 4 2. molar ratio and aging time on the electrical conductivity of PACS solution were also investigated. The experimental results show that the degree of polymerization of polyaluminium chloride(PAC) increases when SO 4 2. ion is added. The higher the basicity( r ) and the longer the aging time, the larger the size of polymer PACS. The ability of PACS neutralizing the charge on Kaolinite decreases with the increase of aging time. The electrical conductivity of PACS solution(the concentration of Al 3. ion is 0.18 mol/L) with different aging time is the function of the basicity and Al 3. /SO 4 2. molar ratios and has its maximum at r =0.5 and Al 3. /SO 4 2. =12.

关键词： coagulant PACS morphology transmission electron microscope electrical conductivity coagulation

Positive Darwinian selection in human population:A review

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Chinese Science Bulletin 2008年第10期53卷 1457-1467页

作者： WU DongDong1,3.& ZHANG YaPing1,2.1 State Key Laboratory of Genetic Resources and Evolution, kunming Institute of Zoology, Chinese Academy of Sciences, kunming 6502.3. China 2.Laboratory for Conservation and Utilization of Bio-resource,{2.,{3., China 3.Graduate university of Chinese Academy of Sciences, Beijing 100049, China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China Laboratory for Conservation and Utilization of Bio-resource Yunnan University Kunming 650091 China Graduate university of Chinese Academy of Sciences Beijing 100049 China

This paper reviews a large number of genes under positive Darwinian selection in modern human populations, such as brain development genes, immunity genes, reproductive related genes, perception receptors. The research on the evolutionary property of these genes will provide important insight into human evolution and disease mechanisms. With the increase of population genetics and comparative genomics data, more and more evidences indicate that positive Darwinian selection plays an indispensable role in the origin and evolution of human beings. This paper will also summarize the methods to detect positive selection, analyze the interference factors faced and make suggestions for further research on positive selection.

关键词：自然选择积极选择达尔文进化论人类学种群遗传

Characteristic analysis for a polynomial-like iterative equation

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Chinese Science Bulletin 1998年第3期43卷 192-196页

作者： Janusz Matkowski 1 and ZHANG Weinian 2.1. department of mathematics, Technical {2., 43.3.0 Bielsko_Biala, Poland {3., Sichuan Union {2., Chengdu 610064, China department of mathematics Technical University Bielsko-Biala Poland department of mathematics Sichuan Union University Chengdu China

In the light of Euler’s idea for differential equations,a polynomial_like n _order iterative equation is discussed through analyzing its characteristic polynomial. An unproved result is verified rigorously for the fi... 详细信息

关键词： iterative dynamics functional equation characteristic.

ω-Gorenstein injective modules and dimensions

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Science China mathematics 2011年第3期54卷 421-436页

作者： ZHU HaiYan1,2.& DING NanQing3.1department of mathematics, Zhejiang {2., Zhejiang 3.002., China 2.0} of mathematics, Zhejiang {2. of Technology, Zhejiang 3.002., China 3.1} of mathematics, Nanjing {2., Nanjing 2.0093. China 1. department of mathematics Zhejiang University Zhejiang 310027 China2. Department of Mathematics Zhejiang University of Technology Zhejiang 310023 China3. Department of Mathematics Nanjing University Nanjing 210093 China

Gorenstein injective modules and dimensions have been studied extensively by many authors. In this paper, we investigate Gorenstein injective modules and dimensions relative to a Wakamatsu tilting module.

关键词： Wakamatsu tilting module ω-Gorenstein injective module ω-Gorenstein injective dimension cotilting module

Global existence of smooth solutions to two-dimensional compressible isentropic Euler equations for Chaplygin gases

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Science China mathematics 2010年第3期53卷 719-738页

作者： KONG DeXing 1 , LIU KeFeng 2.& WANG YuZhu 3. 1 department of mathematics, Zhejiang {2., Hangzhou 3.002., China 2.department of mathematics, {2. of California at Los Angeles, CA 90095, USA 3.department of mathematics, Shanghai Jiao Tong {2., Shanghai 2.02.8, China 1. department of mathematics Zhejiang University Hangzhou 310027 China2. Department of Mathematics University of California at Los Angeles Los Angeles CA 90095 USA3. Department of Mathematics Shanghai Jiao Tong University Shanghai 200248 China

In this paper we investigate the two-dimensional compressible isentropic Euler equations for Chaplygin gases. Under the assumption that the initial data is close to a constant state and the vorticity of the initial velocity vanishes, we prove the global existence of the smooth solution to the Cauchy problem for twodimensional flow of Chaplygin gases.

关键词： Chaplygin gases compressible Euler equations irrotational flow null condition Cauchy problem smooth solution