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A facile synthesis of per (poly )fluoroalkyl substituted α-amino acid derivatives

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chinese Journal of Chemistry 1997年第3期15卷 286-288页

作者： HU, Qiao-Sheng HU, Chang-MingLaboratory of Organofluorine Chemistry, shanghai Institute of Organic Chemistry, chinese academy of sciences, shanghai 20003., {3. Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China [*]Laboratory of Organofluorine Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China

Initiated by CrCl3.Fe redox couple, per(poly)fluoroalkyl iodides added to methyl a-acetylamino acrylate, giving B-per(poly)fluoroalkyl a-amino acid derivatives in good yields.

关键词： Per(poly)fluoroalkyl iodides a-acetylaminoacrylate chromic chloride/iron

<100> Textured Diamond Film on Silicon Grown by Hot Filament Chemical Vapor Deposition

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Journal of Materials Science & Technology 1995年第6期11卷 426-428页

作者： Xuanxiong ZHANG Tiansheng SHI and Xikang ZHANG (State Key Laboratory of Functional Materials for Informatics, shanghai Institute of Metallurgy,chinese academy of {3., shanghai, 200050, china) shanghai Inst of Metallurgy Chinese Acad of Sciences Shanghai China

The textured growth of diamond film on HF eroded silicon wafer has been studied by HFCVD. The evolution of grain size and sudece morphology vs deposition time is presented and the textured thick diamond film (80μm)... 详细信息

关键词： Textured Diamond Film on Silicon Grown by Hot Filament Chemical Vapor Deposition OO

Identification of glutamate transporters and receptors in mouse testis

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Acta Pharmacologica Sinica 2004年第03期25卷 112-117页

作者： Jia-hua HU,Na YANG2,Ying-hua MA,Jie JIANG,Jin-fu ZHANG3.Jian FEI4,Li-he GUO4 Laboratory of Molecular Cell Biology,Institute of Biochemistry and Cell Biology,shanghai Institutes for Biological sciences,chinese {3. of sciences,shanghai 20003. 3.epartment of Urology,Tongji Hospital,Tongji University,shanghai 200065,china Laboratory of Molecular Cell Biology Institute of Biochemistry and Cell BiologyShanghai Institutes for Biological Sciences Chinese Academy of Sciences Department of Urology Tongji Hospital Tongji University

AIM: To investigate the presence of glutamate transporters and receptors in mouse testis. METHODS: Glutamate uptake analysis was performed to study the function of glutamate transporters in mouse testis. Comparative RT-PCR technique and sequencing analysis were used to study the expression of glutamate receptors and transport- ers in mouse testis. RESULTS: Mouse testis possessed glutamate uptake capacity with sodium-dependence. Vmax value of glutamate uptake was (1.60 ± 0.21) pmol/min per mg protein and Km value of glutamate uptake was (11.0±1.6) μmol/L in mouse testis according to saturation analysis. Furthermore, the uptake activity could be inhibited by DHK (GLT1 selective inhibitor) and THA (glutamate uptake inhibitor). In addition, RT-PCR results revealed that glutamate transporters (GLT1 and EAAC1) and ionotropic glutamate receptors (NR1, NR2B, GluR6 and KA2) were expressed in mouse testis. CONCLUSION: Glutamate transporters and receptors do exist in mouse testis.

关键词： glutamates receptors amino acid transport systems testis uptake

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 20043.,china 2 Bioinformatics Center,Key Lab of Systems Biology,shanghai Institutes for Biological sciences,chinese academy of sciences,shanghai 20003.,china 3.shanghai Center for Bioinformation Technology,shanghai 20023.,china 4 School of Life sciences,Tongji University,shanghai 200092,china 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

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

Evanescent Waves and Energy Conservation

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chinese Journal of Lasers 1996年第5期B5卷 439-443页

作者： CAO Qing DENG Ximing (National Laboratory on High Power Laser and physics,shanghai Institute of Optics and Fine Mechanics, chinese academy of sciences,shanghai 201800, china) shanghai Inst of Optics and Fine Mechanics Shanghai China

ＥｖａｎｅｓｃｅｎｔＷａｖｅｓａｎｄＥｎｅｒｇｙＣｏｎｓｅｒｖａｔｉｏｎＣＡＯＱｉｎｇ；ＤＥＮＧＸｉｍｉｎｇ（ＮａｔｉｏｎａｌＬａｂｏｒａｔｏｒｙｏｎＨｉｇｈＰｏｗｅｒＬａｓｅｒａｎｄＰｈｙｓｉｃｓ，Ｓｈａｎｇｈａｉ... 详细信息

ＥｖａｎｅｓｃｅｎｔＷａｖｅｓａｎｄＥｎｅｒｇｙＣｏｎｓｅｒｖａｔｉｏｎＣＡＯＱｉｎｇ；ＤＥＮＧＸｉｍｉｎｇ（ＮａｔｉｏｎａｌＬａｂｏｒａｔｏｒｙｏｎＨｉｇｈＰｏｗｅｒＬａｓｅｒａｎｄＰｈｙｓｉｃｓ，ＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔｅｏｆＯｐｔｉｃｓ...

关键词： evanescent wave energy conservation law

Effect of Initialization technical Parameters on Optical Absorption of Ge_2Sb_2Te_5 Thin Films

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Journal of Materials Science & Technology 2004年第5期20卷 509-511页

作者： Ming FANG, Qinghui LI and Fuxi GANshanghai Institute of Optics and Fine Mechanics, chinese academy of sciences, shanghai 201800, {3. Inst. of Optics and Fine Mech. Chinese Acad. of Sci. Shanghai 201800 China

The optical absorption properties of phase-change optical recording thin films subjected to various initialization conditions were investigated. The effects of initialization power and velocity on optical constants of the Ge2Sb2Te5 thin films were also studied. The energy gap of Ge2Sb2Te5 thin films subjected to various initialization conditions was also obtained. It was found that the optical energy gap of the Ge2Sb2Te5 thin films increased with either increasing initialization laser power or decreasing initialization velocity, with peak of 0.908 eV at laser power of 1000 mW or initialization velocity of 4.0 m/s, but the continued increasing initialization laser power or decreasing initialization velocity resulted in the decrease of the optical energy gap. The change of the optical energy gap was discussed on the basis of amorphous crystalline transformation.

关键词： Phase transformation Optical recording Ge2Sb2Te5 Optical absorption Energy gap

Research on Thermal Effect of Window of High Power Fast Axial Flow CO2 Laser

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chinese Journal of Lasers 2000年第2期9卷 116-120页

作者： JIANG Jinbo CHENG Zhaogu NIU Zhenya ( shanghai Institute of Optics and fine Mechanices, The chinese academy of sciences, shanghai 201800, {3. Chagnchun Institute of Optics and fine Mechanics, chinese academy of sciences, The Changchun 13.022, {3.) 中科院上海光学精密机械所上海中科院长春光学精密机械所吉林长春

Because of the thermal effect of window of high power fast axial flow CO2laser, the coupler will be distorted and become a convex lens. In this paper, the thermal distorted coupler is taken as a quasi-lens ABCD system, and through experiment and theoretical analysis, relations between the position of the output beam waist, the beam waist size, divergence angle, and the output power are given.

关键词： quasi-lens ABCD system beam waist

A Series of Soliton-like and Double-like Periodic Solutions of a (2+1)-Dimensional Asymmetric Nizhnik-Novikov-Vesselov Equation

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Communications in Theoretical physics 2004年第11期42卷 655-660页

作者： CHEN Yong,~(1,3.4, WANG Qi~(2,4) LI Biao~(2,4) ~1Department of Mathematics,Ningbo University,Ningbo 3.5211,china ~2Department of Applied Mathematics,Dalian University of Technology,Dalian 116024,china ~3.epartment of physics,{3. Jiao Tong University,{3. 20003.,china ~4Key Laboratory of Mathematics Mechanization~ the chinese academy of sciences,Beijing 100080,china Key Laboratory of Mathematics Mechanization the Chinese Academy of Sciences Beijing 100080 China

We generalize the algebraic method presented by Fan [***.A:***.3. (2003. 7009)] to uniformlyconstruct a series of soliton-like solutions and double-llke periodic solutions for nonlinear partial differential equations(NPDE),As an application of the method,we choose a (2+1)-dimensional asymmetric Nizhnik-Novikov-Vesselov equa-tion and successfully construct new and more general solutions including a series of nontraveling wave and coefficientfunctions’ soliton-like solutions,double-like periodic and trigonometric-like function solutions.

关键词： symbolic computation soliton-like solution Weierstrass and Jacobi elliptic functions periodic solution

A Possible Origin of 6.7 GHz Linear Methanol Maser Sources

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chinese Journal of Astronomy and Astrophysics 2001年第5期1卷 389-394页

作者： Ye Xu (shanghai Astronomical Observatory, chinese academy of sciences, shanghai 20003.) (Urumqi Astronomical Observatory, chinese academy of sciences, Urumqi 83.011) (National Astronomical Observatories, chinese academy of sciences, Beijing 100012) E-mail shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai 200030 []Urumqi Astronomical Observatory Chinese Academy of Sciences Urumqi 830011 []National Astronomical Observatories Chinese Academy of Sciences Beijing 100012

We present a model which explains the observed multi-linear spatial structures with different velocity gradients of the 50-61A+ methanol line at 6.7 GHz. We consider this and other hypotheses and conclude that the met... 详细信息

关键词： masers - stars: circumstellar matter - stars: formation