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GLOBAL EXISTENCE OF WEAKLY DISCONTINUOUS SOLUTIONS TO A KIND OF MIXED INITIAL-BOUNDARY VALUE PROBLEM FOR QUASILINEAR HYPERBOLIC SYSTEMS

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Applied Mathematics(A Journal of Chinese Universities) 2007年第2期22卷 181-200页

作者： Guo Fei School of Mathematical Sciences, fudan university, shanghai 200433,{2. department of Mathematics, Qufu Normal university, Shandong, 2.3165,{2.. School of Mathematical Sciences Fudan University Shanghai China department of Mathematics Qufu Normal University Shandong China

In this paper, the mixed initial-boundary value problem for general first order quasi- linear hyperbolic systems with nonlinear boundary conditions in the domain D = {（t, x）｜ t ≥ 0, x ≥0} is considered. A suffic... 详细信息

关键词： quasilinear hyperbolic system mixed initial-boundary value problem global weakly discontinu-ous solution weak linear degeneracy

Jensen's Inequality for Backward Stochastic Differential Equations

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Chinese Annals of Mathematics,Series B 2006年第5期27卷 553-564页

作者： Long JIANG department of Mathematics, china {2. of Mining and Technology, Xuzhou 2.1008, Jiangsu, china School of Mathematical Sciences, fudan university, shanghai 200433, china School of Mathematics and System Sciences, Shandong {2., Jinan 2.0100, china. department of Mathematics China University of Mining and Technology Xuzhou 221008 Jiangsu China School of Mathematical Sciences Fudan University Shanghai 200433 China School of Mathematics and System Sciences Shandong University Jinan 250100 China

Under the Lipschitz assumption and square integrable assumption on g, the author proves that Jensen＇s inequality holds for backward stochastic differential equations with generator g if and only if g is independent of y, g（t, 0）≡ 0 and g is super homogeneous with respect to z. This result generalizes the known results on Jensen＇s inequality for gexpectation in [4, 7-9].

关键词： Backward stochastic differential equation g-Expectation Jensen's inequality for g-expectation Jensen's inequality for BSDEs

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 2.0032.{2. 2.department of Medicinal Chemistry,School of Pharmacy,fudan university,shanghai 2.0032.{2. 3 State Key Laboratory of Genetic Engineering & department of Microbiology,School of Life Science,fudan university,shanghai {12.,{2. 4 Laboratory of Disease and Health Genomics,Chinese National Human Genome Center at shanghai,shanghai 2.12.3,{2. 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

Effect of MePEG molecular weight and particle size on in vitro release of tumor necrosis factor-α-loaded nanoparticles

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Acta Pharmacologica Sinica 2005年第2期26卷 242-249页

作者： Chao FANG,Bin SHI,Yuan-ying PEI~2.department of Pharmaceutics,School of Pharmacy,fudan {2.,shanghai 2.0032.china department of Pharmaceutics School of Pharmacy Fudan University Shanghai China

Aim:To study the in vitro release of recombinant human tumor necrosis factor-alpha(rHuTNF-α)encapsulated in poly(methoxypolyethyleneglycol cyanoacry-late-co-n-hexadecyl cyanoacrylate)(PEG-PHDCA)nanoparticles,and investigatethe influence of methoxypolyethyleneglycol(MePEG)molecular weight and par-ticle ***:Three sizes(approximately 80,170,and 2.0 nm)of PEG-PHDCA nanoparticles loading rHuTNF-α were prepared at different MePEG mo-lecular weights(Mr=2.00,5000,and 10000)using the double emulsion *** in vitro rHuTNF-α release was studied in PBS and rat ***:Ahigher burst-release and cumulative-release rate were observed for nanoparticleswith higher MePEG molecular weight or smaller particle size.A decreased cu-mulative release of rHuTNF-α following the initial burst effect was found in PBS,while the particle sizes remained constant and MePEG *** contrast,inrat plasma,slowly increased cumulative-release profiles were obtained after theburst *** a 5-h incubation in rat plasma,more than 50% of the PEG-PHDCA nanoparticles ***:The MePEG molecular weightand particle size had an obvious influence on rHuTNF-α release,rHuTNF-αreleased from PEG-PHDCA nanoparticles in a diffusion-based pattern in PBS,but in a diffusion and erosion-controlled manner in rat plasma.

关键词： tumor necrosis factor-alpha stealth nanoparticles polyethylene glycols poly(methoxypolyethyleneglycol cyanoacrylate-con-hexadecyl cyanoacrylate)

Local and non-local sources of airborne particulate pollution at Beijing——The ratio of Mg/Al as an element tracer for estimating the contributions of mineral aerosols from outside Beijing

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Science china Chemistry 2005年第3期48卷 253-264页

作者： HAN Lihui1, ZHUANG Guoshun1,2.3, SUN Yele1 & WANG Zifa3 1. The Center for Atmospheric Environmental Study, department of Chemistry, Beijing Normal university, Beijing 100875,{2. 2. Center for Atmospheric Chemistry Study, department of Environmental Science & Engineering, fudan university, shanghai 200433,{2. 3. LAPC/NZC, Institute of Atmospheric physics, CAS, Beijing 10002.,{2. The Center for Atmospheric Environmental Study Department of Chemistry Beijing Normal University Beijing China Center for Atmospheric Chemistry Study Department of Environmental Science & Engineering Fudan University Shanghai China Institute of Atmospheric physics CAS LAPC/NZC Beijing China

A new element tracer technique has firstly been established to estimate the contri-butions of mineral aerosols from both inside and outside Beijing. The ratio of Mg/Al in aerosol is a feasible element tracer to distinguish between the sources of inside and outside Beijing. Mineral aerosol, inorganic pollution aerosol mainly as sulfate and nitrate, and organic aerosol are the major components of airborne particulates in Beijing, of which mineral aerosol accounted for 32.―67% of total suspended particles （TSP）, 10%―70% of fine particles （PM2.5）, and as high as 74% and 90% of TSP and PM2.5, respectively, in dust storm. The sources from outside Beijing contributed 62. （38%―86%） of the total mineral aerosols in TSP, 69% （52.―90%） in PM10, and 76% （59%―93%） in PM2.5 in spring, and 69% （52.―83%）, 79% （52.―93%）, and 45% （7%―79%） in TSP, PM10, and PM2.5, respectively, in winter, while only2.% in summer and autumn. The sources from outside Beijing contributed as high as 97% during dust storm and were the dominant source of airborne particulates in Beijing. The contributions from outside Bei-jing in spring and winter are higher than those in summer, indicating clearly that it was related to the various meteorological factors.

关键词： mineral aerosol local sources non-local sources dust storm re-suspended dust element tracer technique.

Stability of multiquadric quasi-interpolation to approximate high order derivatives

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Science china Mathematics 2010年第4期53卷 985-992页

作者： MA LiMin 1,2.& WU ZongMin 1,1 shanghai Key Laboratory for Contemporary Applied Mathematics,School of Mathematical Sciences,fudan {2.,shanghai 200433,china 2.department of Information and Computer Science,Zhejiang Gongshang {2.,Hangzhou 310018,china shanghai Key Laboratory for Contemporary Applied Mathematics School of Mathematical Sciences Fudan University Shanghai China department of Information and Computer Science Zhejiang Gongshang University Hangzhou China

Numerical simulation of the high order derivatives based on the sampling data is an important and basic problem in numerical approximation,especially for solving the differential equations *** classical method is the divided difference ***,it has been shown strongly unstable in ***,it can only be used to simulate the lower order derivatives in *** simulate the high order derivatives,this paper suggests a new method using multiquadric *** stability of the multiquadric quasi-interpolation method is compared with the classical divided difference ***,some numerical examples are presented to confirm the theoretical *** theoretical results and numerical examples show that the multiquadric quasi-interpolation method is much stabler than the divided difference *** property shows that multiquadric quasi-interpolation method is an efficient tool to construct an approximation of high order derivatives based on scattered sampling data even with noise.

关键词： numerical differential radial basis functions (RBFs) Hardy’s multiquadric (MQ) quasiinterpolation divided difference method white noise expectation variance

A Novel CFC-12.Hydrolysis Catalyst: WO_3/SnO_2

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Chinese Chemical Letters 2000年第1期11卷 87-88页

作者： Zhen MA Wei Ming HUA Yi TANG Zi GAO (department of Chemistry, fudan university,{2.) department of Chemistry Fudan University Shanghai 200433 China

The catalytic hydrolysis of dichlorodifluoromethane (CFC-12. was investigated over WO_3/SnO_2.solid acid which was prepared by impregnating Sn(OH)_4 with aqueous ammonium metatungstate followed by evaporating, drying and calcining in air. The CFC-12.conversion over WO_3/SnO_2.at 330'C remained above 99.5% during 150 h on stream, however, parent metal oxides showed rare catalytic decomposition activity.

关键词： Environmental catalysis Freon decomposition, WO_3/SnO_2.catalyst.

Resolution of Internal Total ReflectionScanning Near-field Optical Microscopy

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Chinese Journal of Lasers 2002年第2期11卷 33-38页

作者： GE Huayong GUO Qizhi TAN Weihan (department of physics, {2. university, {2. 2.0436, china ) department of physics Shanghai Universit 上海 200436

In this paper, the probe-sample interaction equation based on Mie’s scattering theory is derived, and the resolution of scanning near field optical microscopy is calculated numerically. The results show that the offset of far-field component to near-field component in total field plays an important role in the resolution and the size of samples also has influence on resolution.

关键词： scanning near field optical microscopy (SNOM) resolution offset of far-field component to near-field component

Polarization Spectral Hole-Burning in Organic Materials

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Chinese Journal of Lasers 1995年第2期B4卷 151-159页

作者： YIN Yu ZHAO Youyuan LUO Xiao CHEN Lingbing LI Fuming(Opening Loboratory for Materials Modification by Laser, Ion and Electron Beams,department of physics,{2., shanghai 200433, china) fudan Univ Shanghai China

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关键词： spectral hole-burning optical storage