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Local 3-cocycles of von Neumann algebras

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Science china Mathematics 2007年第9期50卷 1240-1250页

作者： Cheng-jun HOU~(1+) Ben-yin FU~2 1 school of Mathematical sciences,Qufu Normal university,Qufu 273165,china 2 school of Mathematical sciences,fudan university,shanghai 200433,china school of Mathematical sciences Qufu Normal University Qufu China school of Mathematical sciences Fudan University Shanghai China

We show that every local 3-cocycle of a von Neumann algebra R into an arbitrary unital dual R-bimodule S is a 3-cocycle.

关键词： von Neumann algebra dual bimodule local 3-cocycle 3-cocycle

Blow-Up for a Semi-linear Advection-Diffusion System with Energy Conservation

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Chinese Annals of Mathematics,Series B 2009年第4期30卷 433-446页

作者： Dapeng DU Jing LU Scho of Mathematical sciences Fudan University Shanghai 200433 China Department of Mathematics Shanghai Maritime University Shanghai 200135 China

The authors study radial solutions to a model equation for the Navier-Stokes equations. It is shown that the model equation has self-similar singular solution if 5 ≤ n ≤ 9. It is also shown that the solution will bl... 详细信息

关键词：扩散系统半线性 Stokes方程节能对流模型方程径向解奇性解

Identification and Characterization of glnA Promoter and its Corresponding Trans-regulatory Protein GlnR in the Rifamycin SV Producing Actinomycete,Amycolatopsis mediterranei U32

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Acta Biochimica et Biophysica Sinica 2006年第12期38卷 831-843页

作者： Hao YU~(1&) Wen-Tao PENG~1 yang LIU~1 Ting WU~2 Yu-Feng YAO~1 Ming-Xue CUI~1 Wei-Hong JIANG~1 Guo-Ping ZHAO~(1,3,4*) 1 Laboratory of Molecular Microbiology,Institute of Plant Physiology and Ecology,shanghai Institutes for Biological sciences,Chinese Academy of sciences,shanghai 200032,china 2 Department of Medicinal Chemistry,school of Pharmacy,fudan university,shanghai 200032,china 3 State Key Laboratory of Genetic Engineering & Department of Microbiology,school of life Science,fudan university,shanghai 200433,china 4 Laboratory of Disease and Health Genomics,Chinese National Human Genome Center at shanghai,shanghai 201203,china Laboratory of Molecular Microbiology Institute of Plant Physiology and Ecology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai 200032 China Department of Medicinal Chemistry School of Pharmacy Fudan University Shanghai 200032 China State Key Laboratory of Genetic Engineering & Department of Microbiology School of Life Science Fudan University Shanghai 200433 China Laboratory of Disease and Health Genomics Chinese National Human Genome Center at Shanghai Shanghai 201203 China

The genetic requirements for the transcription of glnA,encoding the major glutaminesynthetase in a rifamycin SV-producing Amycolatopsis mediterranei strain,U32,were *** experiments showed that the promoter of U32 glnA （pglnA） was likely to have two transcriptioninitiation sites:P1and P2,located 157 and 45 nucleotides （nt） upstream of the translational start codon,*** mobility shift and DNase I footprinting analyses revealed a 30 bp cis-element locatedat 45 to 75 nt downstream of P1,or 38 to 68 nt upstream of *** sequence of the cis-element displayedhigh similarity to the corresponding regions of pglnA from Streptomyces coelicolor and *** as a reporter gene,the expression levels of U32 pglnA and its deletion derivatives under differentnitrogen-source conditions were analyzed by detecting the catechol dioxygenase activities in ***54,*** J508 and *** FS10 （glnR mutant）.These in vivo studies showed that theactivation of U32 pglnA in *** required GlnR,and its binding to the U32 pglnA was furtherconfirmed by the gel mobility shift *** and heterologous expression of the U32 glnR allowed usto detect the in vitro interaction between the U32 GlnR and the corresponding pglnA *** shown by in vivo glnR inactivation and complementation indicated that GlnR is essential for theactive transcription of glnA in U32.

关键词： glnA promoter cis-element glnR Amycolatopsis mediterranei

Boundary Identification for a Blast Furnace

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Chinese Annals of Mathematics,Series B 2007年第5期28卷 571-582页

作者： Yongji TAN Rui HE school of Mathematical sciences Fudan University Shanghai 200433 China.

在这篇论文，作者为 axi 对称的不变的热方程讨论一个反的边界问题，它在为强风炉子监视边界腐蚀产生。在一些地点的措施温度被用来识别腐蚀边界的形状。数字倒置是复杂的；自从穿线，消费在这个过程期间变化；处于热问题的边界没被修... 详细信息

在这篇论文，作者为 axi 对称的不变的热方程讨论一个反的边界问题，它在为强风炉子监视边界腐蚀产生。在一些地点的措施温度被用来识别腐蚀边界的形状。数字倒置是复杂的；自从穿线，消费在这个过程期间变化；处于热问题的边界没被修理。作者建议未知边界能被一条给定的曲线加小不安代表的一个方法，然后，方程能与固定边界被解决，；很多计算时间将被节省。

关键词：逆元问题对称基本溶液数学问题

The contribution of cis-regulatory elements to head-to-head gene pairs' co-expression pattern

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Science china(life sciences) 2009年第1期52卷 74-79页

作者： HAO Pei1,2,YU Yao2,3,ZHANG XiaoYan4,TU Kang2,FAN HaiWei2 & zhong yang1 1 school of life sciences,fudan university,shanghai 200433,china 2 Bioinformatics Center,Key Lab of Systems Biology,shanghai Institutes for Biological sciences,Chinese Academy of sciences,shanghai 200031,china 3 shanghai Center for Bioinformation Technology,shanghai 200235,china 4 school of life sciences,Tongji university,shanghai 200092,china school of life sciences Fudan University Shanghai China Bioinformatics Center Key Lab of Systems Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Shanghai China shanghai Center for Bioinformation Technology Shanghai China school of life sciences Tongji University Shanghai China

Transcription regulation is one of the most critical pipelines in biological process,in which cis-elements play the role as gene expression *** attempt to deduce the principles underlying the co-expression of "head-to-head" gene pairs by analyzing activities or behaviors of the shared cis-elements.A network component analysis was performed to estimate the impact of cis-elements on gene promoters and their activities under different *** discoveries reveal how biological system uses those regulatory elements to control the expression pattern of "head-to-head" gene pairs and the whole transcription regulation system.

关键词： transcription regulation cis-elements "head-to-head" gene pairs

Stable Rank One and Real Rank Zero for Crossed Products by Finite Group Actions with the Tracial Rokhlin Property

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Chinese Annals of Mathematics,Series B 2009年第2期30卷 179-186页

作者： Qingzhai FAN Xiaochun FANG school of Mathematical sciences Fudan University Shanghai 200433 China Department of Mathematics Tongji University Shanghai 200092 China

The authors prove that the crossed product of an infinite dimensional simple separable unital C*-algebra with stable rank one by an action of a finite group with the tracial Rokhlin property has again stable rank one. It is also proved that the crossed product of an infinite dimensional simple separable unital C*-algebra with real rank zero by an action of a finite group with the tracial Rokhlin property has again real rank zero.

关键词：稳定秩有限集团产品知识产权无穷维有限群证明财产

The Continuity of Barrier Function with Respect to the Parameter

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Chinese Annals of Mathematics,Series B 2009年第2期30卷 145-152页

作者： Xinxiang LI Jun YAN school of Mathematical sciences Fudan University Shanghai 200433 China

The authors study the continuity of barrier function Bc(x) with respect to the parameter. A sufficient condition which makes Bc(x) be continuous with respect to c is obtained, and an example of discontinuity when the ... 详细信息

关键词：屏障功能连续性充分条件间断

Riemann boundary value problems and reflection of shock for the Chaplygin gas

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Science china Mathematics 2012年第4期55卷 671-685页

作者： CHEN ShuXing 1,& QU AiFang 2 1 school of Mathematical sciences,fudan university,shanghai 200433,china 2 Wuhan Institute of Physics and Mathematics,Chinese Academy of sciences,Wuhan 430071,china school of Mathematical sciences Fudan University Shanghai China Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan China

In this paper,we study two-dimensional Riemann boundary value problems of Euler system for the isentropic and irrotational Chaplygin gas with initial data being two constant states given in two sectors respectively,where one sector is a quadrant and the other one has an acute vertex *** prove that the Riemann boundary value problem admits a global self-similar solution,if either the initial states are close,or the smaller sector is also near a *** result can be applied to solving the problem of shock reflection by a ramp.

关键词： Riemann边值问题气体休克初始状态自相似性顶点角象限欧拉

A characterization of solvability for a class of networks

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Science china(Information sciences) 2012年第4期55卷 747-754页

作者： YUAN Chen & KAN HaiBin shanghai Key Lab of Intelligent Information Processing,school of Computer Science,fudan university,shanghai 200433,china shanghai Key Lab of Intelligent Information Processing School of Computer Science Fudan University Shanghai China

In this paper,we find that Property P can be generalized to characterize the solvability of a kind of networks with any number of sources,thus partially answering the open problem as to whether there are properties similar to Property P to characterize the solvability of some *** an application,for a given integer n,we construct such a solvable network that has no solvable solution if its alphabet size is less than n.

关键词： capacity coding capacity network coding solvability