检索结果-南通市图书馆

Chinese Journal of chemistry 1990年第6期8卷 520-528页

作者： HONG Bo JIN, Song-Lin Yih-Tong KU (GU, Yi-Dong), department of chemistry, fudan university, shanghai 200433 CHEN, Ming-QinCenter of Analyses and Measurements, fudan university, shanghai 200433 department of chemistry Fudan University Shanghai 200433 Center of Analyses and Measurements Fudan University Shanghai 200433

(n-Bu_4N)_3W_2Cl_9, prepared from K_3W_2Cl_9, can be readily converted to a series of [W(IV)]cluster compounds,W_3Cl_4(μ-OR)_2(OR')_2(R'OH)_2, including seven known compounds and two newcompounds with R=Me, R＇=i-Pr ... 详细信息

关键词： CI prepared from HONG Bo JIN Song-Lin Yih-Tong KU Studies on the alcohol exchange reactions of methoxide ditungsten Yi-Dong compound W2Cl4 n-Bu4N CH3OH fudan university GU Cl IV

Dynamic Monte Carlo simulation of chain growth polymerization and its concentration effect

在线全文

学校读者我要写书评

暂无评论

Science china chemistry 2005年第5期48卷 459-465页

作者： Lü Wenqi & DING Jiandong Key Laboratory of Molecular Engineering of Polymers, department of Macromolecular Science, fudan university, shanghai 200433, china Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University Shanghai China

Free radical polymerization and living ion polymerization have been simulated via the dynamic Monte Carlo method with the bond-fluctuation model in this paper. The polymeriza-tion-related parameters such as conversion of monomers, degree of polymerization, average molecular weight and its distribution are obtained by statistics. The simulation outputs are con-sistent with the corresponding theoretical predictions. The scaling relationships of the coil size versus chain length are also confirmed at different volume fractions. Furthermore, the effect of diffusion on polymerization is revealed preliminarily in our simulation. Hence the simulation ap-proach has been proven to be feasible to investigate polymerization reactions with the advan-tages that configuration and diffusion of polymer chains can be examined together with polym-erization kinetics.

关键词： living ion polymerization free radical polymerization concentration effect configuration Monte Carlo simulation.

A New Combination of Mutated loxPs in a Vector for Construction of Phage Antibody Libraries

在线全文

学校读者我要写书评

暂无评论

Acta Biochimica et Biophysica Sinica 2005年第7期37卷 495-500页

作者： Yu GAN~(1,2) Xin-Tai ZHAO~2 1 shanghai Medical College,fudan university,shanghai 200032,china 2 Laboratory for Cellular and Molecular Immunology,Cancer Institute,shanghai Jiaotong university,shanghai 200032,china shanghai Medical College Fudan UniversityShanghai 200032 China Laboratory for Cellular and Molecular Immunology Cancer Institute Shanghai Jiaotong UniversityShanghai 200032 China

In the construction of large antibody libraries by in vivo recombination,two non-homogeneousloxP sites are required for the exchange of V genes between phagemids to create many new *** mutated loxP511 was designed not to recombine with the wild-type loxP （loxPwt） in early studies anda combination of the two has been used to construct antibody *** recent reports have shown thatrecombination occurs between loxPwt and *** suggests that the combinational use of loxP511and loxPwt might lead to the loss of the V gene diversity of antibody ***,it is necessary tofind a new combination of loxPs to avoid the excision recombination in the antibody *** this study,we found that the excision recombination between loxP511 and loxP2272,another mutated loxP sequence,was undetectable within one phagemid,while the excision recombination between loxP511 and loxPwtoccurred at a frequency of 40%.higher than that reported ***,the in vivo recombinationof different phagemids with loxP511 and loxP2272 showed that the V gene exchange was efficiently mediatedto produce new *** was concluded that the loxP511 and loxP2272 combination wasmore favorable for reducing the excision recombination and constructing large phage antibody libraries withhigh diversity.

关键词： mutated loxP excision recombination phage antibody library

Spectroscopic Analysis on the Effect of Temperature on Kunitz Domain 1 of Human Tissue Factor Pathway Inhibitor-2

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Biochimica et Biophysica Sinica 2007年第6期39卷 406-412页

作者： Chenqi ZHANG~(1#), Desheng KONG~(2#), Xingang LIU~1, Xiaomin YAN~1, Linsen DAI~(1*), and Duan MA~(2*) 1 Center of Analysis and Measurement, fudan university, shanghai 200433, china 2 Key Laboratory of Molecular Medicine. Ministry of Education, fudan university, shanghai 200032, china Center of Analysis and Measurement Fudan UniversityShanghai 200433 China Key Laboratory of Molecular Medicine Ministry of Education Fudan UniversityShanghai 200032 China.

The conformation of Kunitz domain 1 of human tissue factor pathway inhibitor-2 (hTFPI-2/KD1) has been studied by Fourier transform infrared spectroscopy, circular dichroism, and Raman spectroscopy. It was found that hTFPI-2/KD1 contained approximately 17% s-helices, 24% β-strands, 46% random coils, 13% β-turns, and two kinds of disulfide bonds (ggg and tgt) at 25℃. The detailed conformational changes of the heated protein observed by Fourier transform infrared spectroscopy, circular dichroism and Raman spectroscopy revealed that hTFPI-2/KD1 was thermally stable. However, KD1 could form an intermediate form at high temperature, then return to its normal conformation when the temperature was lowered. Activity assays also showed that hTFPI-2/KD1 was able to keep its inhibitory activity on plasmin after being heated to 80℃ for 5min.

关键词： hTFPI-2/KD1 conformation disulfide bonds thermal stability structure and function

Properties of lysine-containing zinc amino acid mixed complexes and evaluation of their zinc supplying ability

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of chemistry 1994年第4期12卷 334-342页

作者： HUANG, Zhong-Xian CHENG, Chang DAI, Xiao-Yin WANG, Yun-Huadepartment of chemistry, fudan university, shanghai 200433, chinaLIU, Yu-LiangThe 2nd Military Medical university, shanghai 200433, china department of chemistry Fudan University Shanghai 200438 China The 2nd Military Medical university Shanghai 200433 China

Zinc deficiency is one of the serious problems of trace element nutrition in the world, which causes a series of pathologic effects. Based on the principles of bioinorganic chemistry, the ternary complexes of Zn-lysiue-histidine were studied as a substitution of zinc sulfate for zinc supplementation. It has also been proved by animal trail.

关键词： Zinc supplementation ternary complex of zinc lysine supplementation.

Determination of Standard Molar Enthalpies of Formation for "White Powdery Tungstic Acid" and for Dodecatungstophosphoric Acid by Solution Calorimetry

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 1993年第1期9卷 13-17页

作者： WANG Ai-ming CAI Xian-e ZHU Jing Gu Yi-dong(department of chemistry, fudan university, shanghai 200433)

'White powdery tungstic acid' has been used for preparing various types of tungsten-containing compounds due to its high reactivity. The present paper covers the standard molar enthalpies of formation, △H0/f of three tungsten- containing acids. The values found for 'white powdery tungstic acid' WO3·1. 68H2O, 'yellow tungstic acid' WO3·1. 20H2O and dodecatungstophosphoric acid H3(PW12O40)·25H2O at 298. 15 K were-(1312±1), - (1192±1) and -(18150±13) kJ mol-1, respectively.

关键词： Enthalpy of formation Tungstic acid Dodecatungstophosphoric acid Solution calorimetry

A new scheme of digital communication using chaotic signals in MIMO channels

在线全文

学校读者我要写书评

暂无评论

Science china(Information Sciences) 2012年第10期55卷 2183-2193页

作者： MA HuanFei 1 & KAN HaiBin 2 1 School of Mathematical Sciences,Soochow university,Suzhou 215006,china 2 School of Computer Science,fudan university,shanghai 200433,china School of Mathematical Sciences Soochow University Suzhou China School of Computer Science Fudan University Shanghai China

This paper proposes a new digital communication scheme,which uses chaotic signals based on the adaptive synchronization and parameter identification technique of chaotic systems reported *** to the multi signal character,this scheme combines the chaotic signal transmission with the MIMO channel technique in a wireless environment,which is different from the traditional chaotic communication *** a practical perspective,an outline of modulation,channel model,demodulation and non-coherent detection is ***,system performance is evaluated by simulations,and improvements on this scheme are also discussed.

关键词： chaotic modulation chaotic digital communication mapping parameters MIMO channel

PHOTOOXIDATION OF SOME ORGANIC COMPOUNDS CATALYZED BY DECATUNGSTATES

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 1995年第3期6卷 215-216页

作者： Bin YUE Si San ZHU Gao Yang XIE Yi Dong GU(department of chemistry,fudan university,shanghai,200433) fudan Univ Dept Chem Shanghai 200433 Peoples R China

ＰＨＯＴＯＯＸＩＤＡＴＩＯＮＯＦＳＯＭＥＯＲＧＡＮＩＣＣＯＭＰＯＵＮＤＳＣＡＴＡＬＹＺＥＤＢＹＤＥＣＡＴＵＮＧＳＴＡＴＥＳ￥ＢｉｎＹＵＥ；ＳｉＳａｎＺＨＵ；ＧａｏＹａｎｇＸＩＥ；ＹｉＤｏｎｇＧＵ（Ｄｅｐ...

ＰＨＯＴＯＯＸＩＤＡＴＩＯＮＯＦＳＯＭＥＯＲＧＡＮＩＣＣＯＭＰＯＵＮＤＳＣＡＴＡＬＹＺＥＤＢＹＤＥＣＡＴＵＮＧＳＴＡＴＥＳ￥ＢｉｎＹＵＥ；ＳｉＳａｎＺＨＵ；ＧａｏＹａｎｇＸＩＥ；ＹｉＤｏｎｇＧＵ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒ...

关键词：

Skew Pairing, Cocycle Deformations and Double Crossproducts

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 1999年第2期15卷 225-234页

作者： Huixiang Chen, Institute of Mathematics, fudan university, shanghai 200433, P. R. china department of Mathematics, Yangzhou university, Yangzhou 225002, P. R. china Institute of Mathematics Fudan University Shanghai P. R. China department of Mathematics Yangzhou University Yangzhou P. R. China

In this paper, we give a sufficient condition for double crossproduct X A to be X A for some skew pairing T if X A is a 2-cocycle deformation of X A. Then we give a sufficient and necessary condition for X A to b... 详细信息

关键词： Skew-pairing 2-cocycle Monoidal category Natural isomorphism

RADIAL BASIS FUNCTION INTERPOLATION IN SOBOLEV SPACES AND ITS APPLICATIONS

在线全文

学校读者我要写书评

暂无评论

Journal of Computational Mathematics 2007年第2期25卷 201-210页

作者： Manping Zhang (School of Mathematical Sciences,fudan university,shanghai 200433,china Institute of Computational Mathematics,Chinese Academy of Sciences,Beijing 100080,china School of Mathematical Sciences fudan university Shanghai 200433

In this paper we study the method of interpolation by radial basis functions and give some error estimates in Sobolev space H^k（Ω）（k 〉 1）. With a special kind of radial basis function, we construct a basis in H^k（Ω） and derive a meshless method for solving elliptic partial differential equations. We also propose a method for computing the global data density.

关键词： Sobolev space Radial basis function Global data density Meshless method