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Effects of substitution and terminal groups for liquid-crystallinity enhanced luminescence of disubstituted polyacetylenes carrying chromophoric terphenyl pendants

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中国科学：化学英文版 2010年第6期53卷 1302-1315页

作者： ZHOU Dan,CHEN YiWang,CHEN Lie,LI Fan,NIE HuaRong & YAO Kai Institute of Polymers/Department of Chemistry,nanchang University,nanchang 330031,china Institute of Polymers/Department of Chemistry Nanchang University Nanchang China

Liquid-crystalline and light-emitting poly(2-alkyne)s containing terphenyl cores with hexamethyleneoxy spacers,and cyano or n-propoxy tails -[CH3C=C(CH2)6O-terphenyl-R]n-,where R=CN,CH3PA6CN,R=OCH2CH2CH3,CH3PA6OPr,were *** effects of the substitution and terminal groups on the properties,especially the mesomorphic and optical properties of the polymers,were *** disubstituted acetylene monomers (CH3A6CN,CH3A6OPr) were pre- pared through multistep reaction routes and were polymerized by WCl6-Ph4Sn in good yields (up to 82%).All the monomers and CH3PA6CN exhibited the enantiotropic SmA phase with a monolayer arrangement at elevated temperatures,whereas CH3PA6OPr formed a bilayer SmAd packing *** excitation at 330 nm,strong UV and blue emission peaks at 362 and 411 nm were observed in CH3PA6OPr and CH3PA6CN,*** luminescent properties of CH3PA6CN and CH3PA6OPr have been improved by introducing the methyl substituted group,and the quantum yield of the polymer with cyano tail CH3PA6CN (φ= 74%) was found to be higher than that of CH3PA6OPr (φ= 60%).Compared to polyacety- lene parents,both CH3PA6OPr and CH3PA6CN showed a narrower energy *** demonstrated that the electrical con- ductivities of polyacetylenes could be enhanced by attaching appropriate pendants to the conjugated polyene backbones.

关键词： disubstituted polyacetylenes liquid crystallinity phase transition photoluminescence

Automatic　Analysis　of　the　Phase　Object　Using　Projection　Moire　Deflectometry

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Chinese Journal of Lasers 1995年第6期B4卷 521-529页

作者： WANG Ming(Basic Department, nanchang University, nanchang 330029, china)Received 22 March 1995 Revised manuscript received 5 June 1995 nanchang Univ Nanchang China

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ＡｕｔｏｍａｔｉｃＡｎａｌｙｓｉｓｏｆｔｈｅＰｈａｓｅＯｂｊｅｃｔＵｓｉｎｇＰｒｏｊｅｃｔｉｏｎＭｏｉｒｅＤｅｆｌｅｃｔｏｍｅｔｒｙ￥ＷＡＮＧＭｉｎｇ（ＢａｓｉｃＤｅｐａｒｔｍｅｎｔ，ＮａｎｃｈａｎｇＵｎｉｖｅｒｓｉｔｙ，Ｎａｎｃｈａｎｇ３３００２９...

关键词： projection moire deflectometry phase object

Antitumor Effect of a Novel Adeno-associated Virus Vector Targeting to Telomerase Activity in Tumor Cells

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Acta Biochimica et Biophysica Sinica 2004年第7期36卷 492-500页

作者： Yi-Gang WANG1,2#, Jin-Hui WANG1#, Yan-Hong ZHANG1, Qing GU2*, and Xin-Yuan LIU1* 1Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai 200031, china School of Life Science, nanchang University, nanchang 330047, china Institute of Biochemistry and Cell Biology Shanghai Institutes for Biological Sciences Chinese Academy of Sciences Graduate School of the Chinese Academy of SciencesShanghai 200031 China School of Life Science Nanchang UniversityNanchang 330047 China

Telomerase activity is a wide tumor marker. Human telomerase reverse transcriptase (hTERT), the catalytic subunit of the telomerase, is transcriptionally upregulated exclusively in about 90% of cancer cells. In this study, we constructed a novel adeno-associated virus (AAV) vector containing the human interferon-β (hIFN-β) gene under the control of hTERT promoter (AAV-hTERT-hIFN-β) and investigated its antitumor effect against various human cancer cells in vitro. AAV-hTERT-hIFN-β displayed cancer-specific hIFN-β expression and cytotoxicity. The cytotoxic ratio was positively correlated with the time length of infection. AAV-hTERT-hIFN-β-mediated apoptotic morphology was observed by transmission electron microscopy. Flow cytometry assay also revealed that the cytotoxicity of AAV-hTERT-hIFN-β was mainly an apoptotic process. These data indicate that AAV in combination with hTERT-mediated therapeutic gene expression may open new possibilities for long-lasting and targeting gene therapy of varieties of cancers.

关键词： adeno-associated virus (AAV) telomerase hTERT promoter human interferon-β cancer

ON VECTOR OPTIMIZATION WHEN THE ORDERING CONE HAS AN EMPTY INTERIOR

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Systems Science and Mathematical Sciences 2000年第1期13卷 17-22页

作者： GONG Xun hua (Department of Mathematics, nanchang University, nanchang 330047, china) 南昌大学数学系江西南昌 330047

***,Ybeatopologicalvectorspace,Zbealocallyconvexspace,andletthetopologicaldualspacesofYandZbedenotedbyY*andZ*,***... 详细信息

***,Ybeatopologicalvectorspace,Zbealocallyconvexspace,andletthetopologicaldualspacesofYandZbedenotedbyY*andZ*,***...

关键词： Convex vector optimization Lagrange multiplier saddle point.

Characteristics of distribution of heavy metals insediment of Le An River

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Journal of Environmental Sciences 1995年第2期7卷 240-245页

作者： Li Qi (Research Center for Eco - Environmental Sciences,Chinese Academy of Sciences , BeiJing 100085 , china)Chen Shiming (nanchang Institute of Aeronautical Technology . nanchang 330034 , china) A. Yahya (Institute for Sedimentology, University of Heid Rsch Ctr for Eco-Envmtl Sci Chinese Academy of Sciences Beijing China China

ＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｄｉｓｔｒｉｂｕｔｉｏｎｏｆｈｅａｖｙｍｅｔａｌｓｉｎｓｅｄｉｍｅｎｔｏｆＬｅＡｎＲｉｖｅｒＬｉＱｉ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎｃ... 详细信息

ＣｈａｒａｃｔｅｒｉｓｔｉｃｓｏｆｄｉｓｔｒｉｂｕｔｉｏｎｏｆｈｅａｖｙｍｅｔａｌｓｉｎｓｅｄｉｍｅｎｔｏｆＬｅＡｎＲｉｖｅｒＬｉＱｉ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－ＥｎｖｉｒｏｎｍｅｎｔａｌＳｃｉｅｎｃｅｓ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙ...

关键词： Heavy metals sedirnent pollution.

Synthesis of a Novel UV-curable Prepolymer Hexanediol Diglycidyl Ether Diacrylate and Its Cured Film Tensile Property

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Journal of Wuhan University of Technology(Materials Science) 2011年第1期26卷 4-9页

作者：黄笔武 School of Material Science and Engineering Nanchang University

A novel UV-curable prepolymer hexanediol diglycidyl ether diacrylate （HDGEA） was synthesized by utilizing hexanediol diglycidyl ether （HDGE） and acrylic acid （AA） as starting materials, N, N-dimethylbenzylamine as catalyst and p-hydroxyanisole as inhibitor. The optimal synthetic conditions were that the concentration of N, N-dimethylbenzylamine was 0.80 wt% of reactants, the concentration of p-hydroxyanisole was 0.3 wt% of reactants, the reaction temperature was 90-110 ℃, and the molar ratio of HDGE to AA was 1︰2.2. Meanwhile, 1-hydroxycyclohexyl phenyl ketone of a UV-curing initiator was added to the synthesized HDGEA to prepare a kind of UV-curing coating. The mechanical properties of the UV-cured films were determined, giving 31.87 MPa of tensile strength, 871.88 MPa of Young＇s modulus and 6.77% of elongation at tear.

关键词： hexanediol diglycidyl ether diacrylate synthesis acrylic acid UV-curable prepolymer film

Assessment and improvement of autocorrelation performance of chaotic sequences using a phase space method

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Science china(Information Sciences) 2011年第12期54卷 2667-2679页

作者： CHEN Bin School of Software and Communication Engineering, JiangXi University of Finance and Economy, nanchang 330032, china School of Software and Communication Engineering JiangXi University of Finance and Economy Nanchang China

Chaotic sequences have been widely used as pseudorandom sequences. However, how to judge whether their autocorrelation performance is good remains a problem because we have no simple method for assessing and improving the autocorrelation performance. Using a phase space method, we have discovered that the autocorrelation performance of a chaotic sequence is determined by whether its phase space trajectory is axis symmetrical, and have deduced theorems to describe and solve these problems. This paper presents a simple yet effective method to assess and improve the autocorrelation performance of chaotic sequences. Several simulations are presented to validate the theorems and method.

关键词： chaos autocorrelation pseudorandom sequences phase space

Quantum chemical study on the thermal rearrangements of HNCRCR'CO

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Chinese Journal of Chemistry 1996年第2期14卷 105-108页

作者： LI,Yong-Hong HONG,San-GuoDepartment of Chemistry,Jiangxi Normal University,nanchang,Jiangxi 330017,china Department of Chemistry Jiangxi Normal University Nanchang Jiangxi 330027 China

MINDO/3 molecular orbital theory has been used to study the thermal rearrangements of HNCRCR'*** results obtained show that the activation energy of this rearrangement depends on the migrating group R and the group R'.

关键词： Thermal rearrangement MINDO/3 MO method transition state intrinsic reaction coordinate (IRC)

A Problem about the Weak Hilbert Property

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Acta Mathematica Sinica,English Series 1998年第4期14卷 481-486页

作者： Zeng Guangxing, Departement of Mathematics and Systems Science, nanchang University, nanchang 330047, china Department of Mathematics and Systems Science Nanchang University 330047 Nanchang China

In this paper, we prove the main result: Let both (K, S) and (K*, S*) be preordered fields, and let (K*, S*) be a finitely generated extension of (K, S). If K* is transcendental over K, then (K*, S*) has the weak Hilbert property. This result answers negatively an open problem posed by the author in reference[1]. Moreover, some results on the weak Hilbert property are established. In this paper, we prove the main result: Let both (K, S) and (K*, S*) be preordered fields, and let (K*, S*) be a finitely generated extension of (K, S). If K* is transcendental over K, then (K*, S*) has the weak Hilbert property. This result answers negatively an open problem posed by the author in reference [1]. Moreover, some results on the weak Hilbert property are established.

关键词： Ordered field Preordered field The weak Hilbert property Positive definite polynomial