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Is There any Hexazirconium Cluster in the Compounds [HP(t-Bu)_2.h_3]_3[Zr_6Cl_(18)H_5] and Zr_6Cl_(14)(PPr_3)_4H_4?

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Chinese Chemical Letters 1997年第9期8卷 829-830页

作者： Wen LI ChunHua HU Pei Ju ZHENG(Research Center of analysis and measurement,{2., shanghai 200433) fudan UNIV RES CTR ANAL & MEASUREMENTSHANGHAI 200433PEOPLES R CHINA

The [Zr6(μ2.Cl)12.l6H4]3- ion with C4v Symmetry in the title compounds has been calculated by DV-Xα program. The calculated results show that ther is almost no available covalence bonding between zirconium atoms and significant Zr 4d AO compositions in the MOs. but there are much stronger Zr-Cl(bridging) bonding. All analysis results suggest that these compounds would be the cluster with Zr6Cl12.cage linked by Zr-Cl bridging bonding plus six Cl teminal ligands rather than the hexazirconium cluster in view of the chemical bonding.

关键词： and Zr6Cl PPr3 Is There any Hexazirconium Cluster in the Compounds t-Bu H5 Zr6Cl HP

Synthesis of Nanometer-sized Mesoporous Oxide Spheres

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Chemical Research in Chinese Universities 2001年第2期17卷 143-147页

作者： LUO Qian, LI Li, XUE Zhi-yuan and ZHAO Dong-yuan (Department of Chemistry analysis and measurement Center,{2., shanghai 200433, P. R. china) fudan Univ Dept Chem Shanghai 200433 Peoples R China fudan Univ Ctr Anal & Measurement Shanghai 200433 Peoples R China

A few hundreds nanometer-sized mesoporous silica and alumina spheres were synthesized in organic solvents. The impacts of ammonia, N, N-dimethylformamide (DMF) and stirring speed were also investigated.

关键词： Nanometer-sized Mesoporous Sphere Silica Alumina

An investigation of chemically deposited Ni-P alloys by EXAFS and XRD

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Chinese Journal of Chemistry 1990年第3期8卷 239-245页

作者： MA,Li-Dun LU,Gang SHEN,Xiao-Liang Center for analysis and measurement,{2. university,shanghai 200433 Center for analysis and measurement Fudan University Shanghai 200433

Five samples of chemically desposited Ni-P amorphous alloys were prepared and inves- *** these amorphous alloys there are Ni-P atom groups in which phosphorus and nickel are connected with strong *** atoms and Ni-P groups are deposited in a random manner on the surface of matrix and a quasilayer structure is *** spacing between two layers in alloys resembles that in(111)plane in the nickel *** there is a peak at the same position of 2.=44.4° as that of the(111)reflection of crystalline nickel in the X-ray powder diffraction pat- tern of ***,the dimension of Ni-P groups is different from that of a nickel atom and the atomic arrangement in the layer is in *** result in the space change and there is a distribution of spacing around the *** a consequence of distribution of spacings,the peak at 2.=44.4° is broadened and enhanced as the amount of P increases.

关键词： EXAFS An investigation of chemically deposited Ni-P alloys by EXAFS and XRD Ni

Mass spectrometry analysis of melanoma related O-glycans in sera

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Science china Chemistry 2010年第4期53卷 807-811页

作者： BAI Chen1,4, WU Gang1 & ZHAO Liang2.3 1Department of Life Science, fudan university, shanghai 200433,{2. 2.epartment of Chemistry, fudan university, shanghai 200433,{2. 3Institutes of Biomedical Sciences, fudan university, shanghai 200433,{2. 4Department of Food Science, shanghai Business School, shanghai 2.02.5,{2. 1. Department of Life Science Fudan University Shanghai 200433 China4. Department of Food Science Shanghai Business School Shanghai 200235 China2. Department of Chemistry Fudan University Shanghai 200433 China3. Institutes of Biomedical Sciences Fudan University Shanghai 200433 China

Glycomics comparison was carried out by screening melanoma serum biomarkers between C57 mice with and without B16 implanted. O-glycans were released from 10 μL sera by β-elimination, purified by Graphitized Carbon Cartridge Solid Phase Extraction (GCC-SPE) and analyzed by MALDI-QIT-TOF-MS. MS raw data were acquired and exported by Launchpad software. MATLAB was then applied for further data analysis. 10 Glycans were considered to have stable changes after B16 implantation and 5 of them were under structural analysis via MS/MS.

关键词： mass spectrometry glycomics melanoma biomarkers

An Improved Method in Synchronization ofChaotic Systems

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Communications in Nonlinear Science and Numerical Simulation 1998年第3期3卷 140-143页

作者： Jiong RUAN and Lijuan LI(Department of Mathematics, fudan university, shanghai 200433,{2.) Department of Mathematics Fudan University Shanghai 200433 China

An improved strategy in srnchrohization of chaotic dynamics as contrastedwith PC(*** and ***) method and KSC(Kocarev L, Shang A, Chua,L.O.)control idea is presented in this paper. Computer simulations are included to ... 详细信息

关键词： synchronization conditional Lyapunov exponents drive-response

A Modified Binomial Tree Method for Currency Lookback Options

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Acta Mathematica Sinica,English Series 2000年第3期16卷 445-454页

作者： Min Dai Institute of Mathematics,fudan university,{2. 200433,P.R.china Institute of Mathematics Fudan University Shanghai 200433 P. R. China

The binomial tree method is the most popular numerical approach to pricing options. However,for currency lookback options,this method is not consistent with the corresponding continuous models,which leads to slow speed of *** the basis of the PDE approach,we develop a consistent numerical scheme called the modified binomial tree *** possesses one order of accuracy and its efficiency is demonstrated by numerical *** convergence proofs are also produced in terms of numerical analysis and the notion of viscosity solution.

关键词： Modified binomial tree method Currency lookback options Convergence

Electronic Structure Calculation for Co_6(μ_6-C)(μ_3-S)_2.CO)_(12. Cluster

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Chinese Chemical Letters 1997年第4期8卷 351-352页

作者： Wen LI Ye LIU Yuan Qi YIN( Lanzhou Institute of Chemical Physics, Academia Sinica)(Research Center of analysis and measurement,{2., shanghai 200433) ACAD SINICA LANZHOU INST CHEM PHYSLANZHOUPEOPLES R CHINA fudan UNIV RES CTR ANAL & MEASUREMENTSHANGHAI 200433PEOPLES R CHINA

The electronic Structure ofCo6(μ_6-C)(μ_3-S)_2.CO)_(12. molecule has been calculated by DV-Xα method. The results show that the reaction mechanism of CS_2.and Co2.CO)8 in synthsis seems only to undergo the additive and decarbonyl processes. The other result worthy of being mentioned is the calculated atonmic charges that are Co0.3+,S1.2.+,μ6-Cl. 16-,C0.06- and O0.2.-.S atom has not only the positive charge but also four times as much as that of Co atom. This is not in accordance with the electronegativihes of 1.7 and 2.5 respectively for Co and S atom

关键词： Co CO Cluster

On the Neighborhood in Stabilizing Period-T Orbits for Chaotic m Degree Polynomial Dynamical System

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Communications in Nonlinear Science and Numerical Simulation 1998年第4期3卷 242-247页

作者： Enguo GU Jiong RUAN and Zhenxun HUANG (Institute of Mathematics, fudan university, shanghai 200433,{2.) Institute of Mathematics Fudan University Shanghai 200433 China

In this paper, a problem of stabilizing a period-T orbit in discrete Chaotic m degree polynomial dynamical systems is studied. The aim is to present a new method for determining the neighborhood of a period-T point in which the system remains stable when subjected to a linear feedback control. A theorem on the existence of neighborhood is rigorously proved using idea from functional analysis and polar coordinate *** ways of implementing the obtained theorem in the Henon map are proposed. Thevalidity of this method is shown by numerical simulation.

关键词： neighborhood of period-T orbit controlling chaotic discrete system gain matrix

Dynamics of Primary Events in the Photocycle of Excited Bacteriorhodopsin

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Acta Biochimica et Biophysica Sinica 2004年第11期36卷 724-728页

作者： Jun-Jun LU, Ming MING, Yi YANG, Jia WU, Bo LI, Jian-Dong DING, Qing-Guo LI, and Shi-Xiong QIANDepartment of Physics, fudan university, shanghai 200433,{2. Department of Macromolecular Science, Key Laboratory of Molecular Engineering of Polymers, fudan university, shanghai 200433,{2. Department of Physiology and Biophysics, School of Life Sciences, fudan university, shanghai 200433,{2. Department of Physics Fudan University Shanghai 200433 China

Transient dynamic behavior of the excited bacteriorhodopsin (BR), which was isolated from the strain H. salinarum, was studied at excitation wavelength from 585 to 639 nm. With the one-color femtosecond (fs) pump-probe technique, we revealed the primary events in BR's photocycle that took place in an ultrafast time scale. From the analysis of the decay components of the dynamical traces, it was evident that the isomerization of the retinal

关键词： bacteriorhodopsin transient dynamics primary events femtosecond laser pump-probe technique