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The Abundance of Strange Attractor in the Families of Nearby Singular Diffeomorphism

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Acta Mathematica Sinica,English Series 1997年第1期13卷 90-96页

作者： cao Yongluo (Department of mathematics,suzhou university,suzhou 215006,china) Department of mathematics Suzhou University Suzhou China

In this paper,we consider the families of nearby singular diffeomorphism and the measure of a set in the parameter space,such that for each point of the set the corresponding diffeomorphism possesses strange *** some families of one-dimensional mapping satisfying certain transversality condition,we prove that there is a positive measure set in the parameter space, such that the system in the corresponding families of nearly singular diffeomorphism has strange ***,we study the dynamics of this type of strange attractor.

关键词： Transversal homoclinic point Strange attractor The families of nearby singular dif-

The Geometric Structure of Strange Attractors in the Lozi Map

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Communications in Nonlinear Science and Numerical Simulation 1998年第2期3卷 67-71页

作者： Yongluo cao and Zengrong LIU* (Department of mathematics, suzhou university,suzhou 215006, china) *(Department of mathematics, Shanghai university,Shanghai 200072, china) (E mail: ***) Department of mathematics Suzhou University Suzhou 215006 China Department of mathematics Shanghai University Shanghai 200072 China

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｅｐａｓｔｔｗｏｄｅｃａｄｅｓ，ｔｈｅｓｔｒａｎｇｅａｔｒａｃｔｏｒｓｉｎｔｈｅｆｉｅｌｄｏｆｎｏｎｌｉｎｅａｒｓｃｉｅｎｃｅｄｒａｗｓｔｈｅａｔｅｎｔｉｏｎｏｆｍａｎｙｓｃｉｅｎｔｉ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｈｅｐａｓｔｔｗｏｄｅｃａｄｅｓ，ｔｈｅｓｔｒａｎｇｅａｔｒａｃｔｏｒｓｉｎｔｈｅｆｉｅｌｄｏｆｎｏｎｌｉｎｅａｒｓｃｉｅｎｃｅｄｒａｗｓｔｈｅａｔｅｎｔｉｏｎｏｆｍａｎｙｓｃｉｅｎｔｉｓｔｓ．Ｉｎｐａｒｔｉｃｕｌａｒ，...

关键词： strange attractor transversal homoclinic point weak transversal homoclinic point

Synthesis and Crystal Structure of Bis(nitrate)- bis(N,N'-dimethyl-N,N'-dibenzenyl-urea)uranyl(Ⅱ)

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Chinese Journal of Structural Chemistry 2003年第5期22卷 521-524页

作者： ZHU Li-Ming LI Bao-Long② cao Zheng-Bai ZHANG Yong (College of Chemistry and Chemical Engineering, suzhou university, suzhou 215006, china) College of Chemistry and Chemical Engineering Suzhou University Suzhou 215006

The new uranyl complex UO2(NO3)2[PhN(CH3)C(O)(CH3)NPh]2 was synthesized and its crystal structure has been determined by single-crystal X-ray diffraction. Crystal data: C30H32N6O10U, triclinic, space group P with a = 7.772(1), b = 9.267(1), c = 12.644(1) ? a = 68.246(8), b = 73.871(9), g = 84.99(1)o, V = 812.4(2) ?, Mr = 874.65, Z = 1, Dc = 1.788 g/cm3, F(000) = 426, m = 5.062 mm-1, the final R = 0.022 and wR = 0.059 for 3571 observed reflections (I > 2s(I)). The central uranyl ion is coordinated by six oxygen atoms, two from the carbonyl groups of N,N-dimethyl-N,N-dibenzenyl-urea molecules and the other four from two nitrate groups.

关键词： substituted urea uranyl complex synthesis crystal structure

3-methyl-4-metroxy-4'-nitrostilbene (MMONS) Crystal Growth and Studies of It

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Chinese Journal of Lasers 1994年第1期B3卷 63-67页

作者： cao Yang ZHU Zhidong HUANG Fang(Chemistry Department of suzhou university,Shuzhou, 215006, china) suzhou Univ Suzhou China

３－ｍｅｔｈｙｌ－４－ｍｅｔｒｏｘｙ－４＇－ｎｉｔｒｏｓｔｉｌｂｅｎｅ（ＭＭＯＮＳ）ＣｒｙｓｔａｌＧｒｏｗｔｈａｎｄＳｔｕｄｉｅｓｏｆＩｔｓＳｅｃｏｎｄＮｏｎｌｉｎｅａｒＯｐｔｉｃａｌＰｒｏｐｅｒｔｉｅｓ￥ＣＡＯＹａ... 详细信息

３－ｍｅｔｈｙｌ－４－ｍｅｔｒｏｘｙ－４＇－ｎｉｔｒｏｓｔｉｌｂｅｎｅ（ＭＭＯＮＳ）ＣｒｙｓｔａｌＧｒｏｗｔｈａｎｄＳｔｕｄｉｅｓｏｆＩｔｓＳｅｃｏｎｄＮｏｎｌｉｎｅａｒＯｐｔｉｃａｌＰｒｏｐｅｒｔｉｅｓ￥ＣＡＯＹａｎｇ；ＺＨＵＺｈｉｄｏｎｇ；ＨＵＡ...

关键词： organic crystal nonlinear optics MMONS

Synthesis of 4'-Methoxy Flavone

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Chinese Chemical Letters 2000年第7期11卷 565-566页

作者： Lei ZOU Xiao Juan YE Yuan Lian LIU Zhen Bai cao(Department of Chemistry, suzhou university, suzhou 215006) Department of Chemistry Suzhou University Suzhou 215006 China

Synthesis of 4'-methoxyflavone, first by the reaction of 4 - methoxy acetophenone enamine with heptanedioyl chloride, then by dehydrogenation, is described.

关键词： Enamine heptanedioyl chloride tetrahydroflavone flavone synthesis

Synthesis and Structure of 2,3-Tetra-Methylene-5,6-Trimethylene-4-Pyrone

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Chinese Chemical Letters 1997年第4期8卷 275-276页

作者： Fan XU Xue Qin cao Zhi Gang YAO Zheng Bai cao(Department of Chemistry, suzhou university. suzhou, 215006)Jian CHEN(Testing and Analysis Centre, Fudan university, Shanghai, 200433) Department of Chemistry Suzhou University Suzhou 215006 China Testing and Analysis Centre Fudan University Shanghai 200433 China

The title compound was synthesized by the reaction of adipyl chloride with cyclohexanone piperidine enamine and its structure was finally confirmed by the single - crystal determination in addition to conventional IR,... 详细信息

关键词： Synthesis and Structure of 2 3-Tetra-Methylene-5 6-Trimethylene-4-Pyrone

Molecular and Crystal Structure of 2, 3, 5, 6-dipropylene-r-pyrone

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Chinese Journal of Structural Chemistry 1997年第4期16卷 271-274页

作者： cao Xue-Qin ZHANG De-Chun XU Fan cao Zheng-Bai(Department of Chemistry, suzhou university, suzhou, 215006)SUN Ji(Shanghai Institute of Organic Chemistry,the Chinese Academy of Sciences, 200032, Shanghai) 苏州大学化学系江苏苏州中科院上海有机化学所上海

The title compound, C11H12O2, crystallizes in space group Pbcn (#60), a=8. 308(2), b=12. 812(3), c=8. 444(2) A, V=898. 8(6)A3, Z=4, Dc=1. 302 g/cm3, μ(MoKα) = 0. 88 cm-1, F (000) = 376. 00. The final R and Rw are0. 038 and 0. 045 for 401 observed reflections (I>3σ(I) ), respectively- The moleculeis nearly planar, having a 2-fold axis. Two-dimensional sheets are formed by weak in-termolecular hydrogen bonding. The sheets are antiparallelly packed by van der Waalsinteractions.

关键词： 2 3 5 6-dipropylene-r-pyrone synthesis crystal structure

Studies on the singlet and triplet states of unsaturated carbenes

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Chinese Journal of Chemistry 1986年第2期4卷 168-171页

作者： cao Yang* TAO Fu-Ming WANG You-Liang, Department of Chemistry, suzhou university, suzhou Department of Chemistry Suzhou University Suzhou

Quantum chemical calculations and studies have been made on the different spin statesof unsaturated carbenes X2C=C: and X2C=C=C:（X=H, Li, F）. The geometries and relativestabilities of these carbenes with various groups X have been outlined. The ground states of unsaturatedcarbenes are all singlet. The energy splittings between the ground states and first excited states E（1A1-3B1） are generally within the value of 60 kcal/mol and change greatly with the electronegativitiesof groups X, but little with the sizes of the cumulidenes. The equilibrium conformations of1A1and3B1are different.

关键词： Studies on the singlet and triplet states of unsaturated carbenes

Caspase-1 inhibitor Ac-YVAD-CHO attenuates quinolinic acid-induced increases in p53 and apoptosis in rat striatum

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Acta Pharmacologica Sinica 2005年第2期26卷 150-154页

作者： Yi cao Zhen-lun GU Fang LIN Rong HAN Zheng-hong QIN Department of Pharmacology,Soochow university School of Medicine,suzhou 215007,china Department of Pharmacology Soochow University School of Medicine Suzhou China

Aim:To study the effects of the caspase-1 inhibitor Ac-YVAD-CHO on quinolinicacid(QA)-induced ***:Rats were pre-treated with intrastriatalinfusion of Ac-YVAD-CHO(2-8μg)before intrastriatal injection of QA(60 nmol).Striatal total proteins,genomic DNA,and nuclear proteins were *** of Ac-YVAD-CHO on QA-induced caspase-1 activity,internucleosomalDNA fragmentation, IκB-α degradation,NF-κB,and AP-1 activation,and increasesin p53 protein levels were measured with enzyme assays,agarose gel electro-phoresis,electrophoresis mobility shift assays,and Western blot ***:Pre-treatment with Ac-YVAD-CHO inhibited QA-induced internucleo-somal DNA ***-YVAD-CHO inhibited QA-induced increases incaspase-1 activity and p53 protein levels,but had no effect on QA-induced IκB-αdegradation,NF-κB or AP-1 ***:Caspase-1 is involved inQA-induced p53 upregulation but not IκB-α *** of caspase-1attenuates QA-induced apoptosis in rat striatum.

关键词： caspase 1 Ac-YVAD-CHO Huntington disease protein p53 NF-kappaB inhibitor alpha apoptosis NF-kappaB