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Study on the complex-formation reaction of yttrium with para-methyl-chlorophosphonazo(CPApM)

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Chinese Journal of Chemistry 1991年第3期9卷 199-204页

作者： DU,Ying-Xiang Division of Analytical Chemistry,china Pharmaceutical University,Nanjing 210009XU,Zhong-Jun(HSU,Chung-Gin) PAN,Jiao-Mai department of Chemistry,east{3. normal University,shanghai 200062 1Division of Analytical Chemistry China Pharmaceutical University Nanjing 2100092Department of Chemistry East China Normal University Shanghai 200062

Yttrium forms with CPApM a 1:2 α-complex instantaneously in acidic *** pH～ (buffer solution),the α-complex is transformed to a β-complex with an absorption peak at 755 nm after *** transformation reaction is a first-order *** rate constant and the apparent activation energy were found to be 9.67×10^(-) min^(-1) and 52.3.kJ·mol^(-1) *** mechanism of the reaction shows that the β-complex(Y:CPApM=2:4)is formed by combining two molecules of α-complex with the liberation of one proton.

关键词： PM Study on the complex-formation reaction of yttrium with para-methyl-chlorophosphonazo

The change of geographical distribution of two Asian species of rhinoceros in Holocene

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Journal of Geographical Sciences 1998年第1期8卷 84-89页

作者： Liu Hongjie department of geography, South china normal University, Guangzhou 51063., china

At present only five species of rhinoceros surrive in the world, among which three in Asia No wild rhinoceros has been found alive in east Asia now But many recent evidences reveal the fact that rhinoceros still lived not very long ago in the east Asian Continent of Holocene The attention to east Asia rhinoceros in Holocene first arose from archaeological studies on ancient ruins in{3. Archaeologists first found some subfossil skeletons of rhinoceros in ruins of Yin Dynasty in Anyang of Henan in the 193.s Then more skeletons of rhinoceros were found in many other Neolithic Ages runis, such as in Tonghai (Yunnan), Nanning (Guangxi), Xichuan (Henan), Yuyao (Zhejiang), and Haian (Jiangsu).(Guangxi Archaeological Team 1972; Jia 1977; Wu 1983. Huang and Liang 1984; Xu 1990). Moreover, Zhou Benxiong reported some rhinoceros teeth containing residual organic matter found in caves in the middle and lower reaches of Yangtze River According to a number of very now skeletons of rhinoceros found in some caves in Central{3. and South{3., Yang Zhongjian drew the inferences that rhinoceros might live in the Southern part of{3. until in the Han Dynasty (about 2000 yrs B P ) at least These discoveries provided the material evidences for the distribution of rhinoceros in east Asian Continent Recently, some scholars brought forward more new information about Chinese rhinoceros from the analysis of historical records and investigations of unearthed cultural relics respectively (Wen and He 1981; Sun 1982). Based on the above materials and informations, this paper is going to deal with the species of rhinoceros once living in east Asia from the viewpoint of zoo geography At last, we brouhgt up the evolution process of the rhinoceros in distribution in Asia with comprehensive analysis of physiographical elements and human activities

关键词： rhinoceros geographical distribution evolution process east Asia Holocence

MINIMAL INVERSION AND ITS ALGORITHMS OF DISCRETE-TIME NONLINEAR SYSTEMS

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Journal of Systems Science & Complexity 2005年第3期18卷 383-395页

作者： ZHENG Yufan department of Electrical and Electronic Engineering, The University of Melbourne, Parkville, Vic. 3.10, Australia Institute of Systems Science, east china {3. University, shanghai 200062, china. department of Electrical and Electronic Engineering The University of Melbourne

The left-inverse system with minimal order and its algorithms of discrete-time nonlinear systems are studied in a linear algebraic framework. The general structure of left-inverse system is described and computed in s... 详细信息

关键词： left-inverse discrete-time system nonlinear system symbolic computation

万兆以太网10GBASE-WX PHY研究

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计算机工程 2000年第9期26卷 125-128页

作者：杨明华东师范大学计算机系上海200062

对万兆以太网１０ＧＢＡＳＥ－ＷＸ物理层技术进行了介绍，包括了物理编码子层、物理附件子层功能描述，并对关键的ＰＣＳ子层技术的实现进行详细的讨论，对有关的算法进行了分析．

关键词：万兆以太网物理层 10GBASE-WX PHY

The Promoting Effect on the Activities ofFe Doped TiO_2 Photocatalysts

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Chemical Research in Chinese Universities 2001年第2期17卷 187-192页

作者： YU Xi-bin, WANG Gui-hua and LI He-xing (department of Chemistry, shanghai normal University, shanghai 20023., P. R. china) shanghai normal Univ Dept Chem Shanghai 200234 Peoples R China

The particles of titanium-iron (Ti/Fe) complex with different Fe contents were prepared by means of the sol-gel method and used as a photocatalyst. The activity of the catalyst was investi- gated as a function of the Fe content during the liquid-phase oxidation of tetracycline, which showed an enhancement at the low Fe content. The XRD, Raman, XPS, and UV-Vis absorp- tion spectra indicated that the crystalline structure of the Ti/Fe complex particles changed from anatase phase to rutile phase when the Fe content increased. The isolated Fe203. Fe3.4, FeO species were observed and Fe3. ions were highly dispersed in the TiO2 matrixes, then Ti-O-Fe species were formed. These species increased the surface defects of the Ti/Fe particles. Also, ac- tive hydroxyl radicals could be generated in the catalytic transformation, which led to the higher activity of the catalyst than bare Ti02 for the degradation of tetracycline.

关键词： Titanium Fe doped photocatalyst Photocatalytic activity Tetracycline

Time of impact of fragment P2 of comet SL 9 on Jupiter

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Chinese Science Bulletin 1997年第5期42卷 396-398页

作者： ZHOU Hongnan,QIAN Bochen, HUANG Keliang and LI Qibin1. department of Astronomy, Nanjing University, Nanjing 210093. china 2. shanghai Observatory, Chinese Academy of Sciences, shanghai 20003., china 3. Physics department, Nanjing normal University, Nanjing 210097, china 4. Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing 100080, china department of Astronomy Nanjing University Nanjing China shanghai Observatory Chinese Academy of Sciences Shanghai China Physics department Nanjing Normal University Nanjing China Beijing Astronomical Observatory Chinese Academy of Sciences Behijing China

FROM 1994-07-16 to 1994-07-22, 21 fragments of comet SL 9 impacted against Jupiter in succession. During the impact period the impact of fragments D, E, K, N, P2 and S was observed in china. We used a 1.56-m telescope with the CCD camera of shanghai Observatory to monitor Jupiter and its Galilean Satellites, obtaining 1000 high-quality images at B, V, I wave bands. Our data on optical wave bands are rather complete and valuable in the world. Specially, we got some images of Jupiter, Io and Europa in the impact time of fragment P2 impacting against Jupiter. This will help us understand the precise time, position, depth and energy of the P2’s collision. In this note, we report the impact time of fragment P2 of comet SL 9 and Jupiter. Since the impact of comet SL 9 was expected to take place on the side of Jupiter

关键词： comet comet Shoemaker-Levy 9 impacting against Jupiter impact time.

JACOBI SPECTRAL APPROXIMATIONS TO DIFFERENTIALEQUATIONS ON THE HALF LINE

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Journal of Computational Mathematics 2000年第1期18卷 95-112页

作者： Ben-yu Guo(department of Mathematics, shanghai normal University, shanghai 20023., china)(COM2MAC, Pohang University of Science and Technology, Pohang, Korea) 上海师范大学上海 200234

Presents a study which investigated some Jacobi approximations which are used for numerical solutions of differential equations on the half line. Application of the approximations to problems on unbounded domains; Alg... 详细信息

关键词： Jacobi spectral approximations differential equations on the half line stability and convergence

Different-Periodic Travelling Wave Solutions for Nonlinear Equations

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Communications in Theoretical Physics 2004年第4期41卷 481-486页

作者： YE Li-Jun~1 LIN Ji~(1,2)1 department of Physics,Zhejiang normal University,Jinhua 3.1004,china2 Physics department,shanghai Jiao Tong University,shanghai 20003.,china Physics department Shanghai Jiao Tong University Shanghai 200030 China

Using Jacobi elliptic function linear superposition approach for the(1+1)-dimensional Caudrey-Dodd-Gibbon-Sawada-Kotera(CDGSK)equation and the(2+1)-dimensional Nizhnik-Novikov-Veselov(NNV)equation,many new periodic travelling wave solutions with different periods and velocities are obtained based on the knownperiodic *** procedure is crucially dependent on a sequence of cyclic identities involving Jacobi ellipticfunctions sn(ξ,m),cn(ξ,m),and dn(ξ,m).

关键词： linear superposition nonlinear equation travelling wave solution

ON NON-ISOTROPIC JACOBI PSEUDOSPECTRAL METHOD

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Journal of Computational Mathematics 2008年第4期26卷 511-535页

作者： Benyu Guo Keji Zhang department of Mathematics,shanghai normal University,shanghai 20023.,china Scientific Computing Key Laboratory of shanghai Universities Division of Computational Science of E-Institute of shanghai Universities department of Mathematics Shanghai Normal University Shanghai 200234

In this paper, a non-isotropic Jacobi pseudospectral method is proposed and its appli- cations are considered. Some results on the multi-dimensional Jacobi-Gauss type interpolation and the related Bernstein-Jackson type inequalities are established, which play an important role in pseudospectral method. The pseudospectral method is applied to a twodimensional singular problem and a problem on axisymmetric domain. The convergence of proposed schemes is established. Numerical results demonstrate the efficiency of the proposed method.

关键词： Jacobi pseudospectral method in multiple dimensions Jacobi-Gauss type inter-polation Bernstein-Jackson type inequalities Singular problem Problem on axisymmetricdomain.