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Journal of Environmental Sciences 2010年第2期22卷 237-241页

作者： Deman Han ,Wenping Jia,Huading Liang department of chemistry,Taizhou university,Linhai 3.7000,{3.. department of chemistry Taizhou University Linhai 317000 China

A molecularly-imprinted amino-functionalized sorbent for selective removal of 2,4-dichlorophenoxyacetic acid （2,4-D） was prepared by a surface imprinting technique in combination with a sol-gel process. The 2,4-D-imprinted amino-functionalized silica sorbent was characterized by FT-IR, nitrogen adsorption and static adsorption experiments. The selectivity of the sorbent was investigated by a batch competitive binding experiment using an aqueous 2,4-D and 2,4-dichlorophenol （2,4-DCP） mixture or using an aqueous 2,4-D and 2,4- dichlorophenylacetic acid （DPAC） mixture. The largest selectivity coefficient for 2,4-D in the presence of 2,4-DCP was found to be over 18, the largest relative selectivity coefficient between 2,4-D and 2,4-DCP over 9. The static uptake capacity and selectivity coefficient of the 2,4-D-imprinted functionalized sorbent are higher than those of the non-imprinted sorbent. The imprinted functionalized silica gel sorbent offered a fast kinetics for the extraction/stripping of 2,4-D, 73. of binding capacity （200 mg/L 2,4-D onto 20 mg of imprinted sorbent） was obtained within 5 min and the adsorbed 2,4-D can be easily stripped by the mixture solution of ethanol and 6 mol/L HC1 （V：V =1：1）. In a test of five extraction/stripping cycles, the adsorption capacity of the sorbent was all above 93. of that of the fresh sorbent. Experimental result showed the potential of molecularly-imprinted amino-functionalized sorbent for selective removal of 2,4-D.

关键词： 2,4-dichlorophenoxyacetic acid molecular imprinting functionalized silica gel

Isoprenaline enhances local Ca2+ release in cardiac myocytes

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Acta Pharmacologica Sinica 2006年第7期27卷 927-932页

作者： Jian-xin SHEN~(2,3.42 department of Physiology,Shantou university Medical College,Shantou 515041,china 3.department of Physiology,Medical School of Xi'an Jiaotong university,Xi'an 710061,china department of Physiology Shantou University Medical College Shantou China department of Physiology Medical School of Xi'an Jiaotong University Xi'an China

Aim:Contraction of cardiac myocytes is controlled by the generation and ampli-fication of intracellular Ca2+*** key step of this process is the couplingbetween sarcolemma L-type Ca2+channels（LCCs）and ryanodine receptors（RyRs）in the sarcoplasmic reticulum（SR）.β-Adrenergic stimulation is an important regu-latory mechanism for this coupling *** the details underlied the globallevel,which require local Ca2+release study are still *** present study isto explore the effects of β-adrenergic stimulation on local Ca2+***:Using confocal microscopy combined with loose-seal patch-clamp approaches,effects of isoprenaline(1 μmol·L-1),a β-adrenergic agonist,on local SR Ca2+re-lease triggered by Ca2+influx through LCCs in intact rat cardiac myocytes ***:Isoprenaline increased the intensity of ensemble averagedlocal Ca2+transients,the peak of which displayed a typical bell-shaped voltage-dependence over the membrane voltages ranging from～-40mV to～+3.m ***-ther analysis showed that this enhancement could be explained by the increasedcoupling fidelity（which refers the increased probability of RyRs activation upondepolarization）,and the increased amplitude of evoked Ca2+sparks(due to moreCa2+releases through local RyRs).In addition,isoprenaline decreased the firstlatency,which displayed a typical"U"-shaped voltage-dependence,showing theavailable acceleration and synchronization of β-adrenergic stimulation on intrac-ellular calcium ***:Isoprenaline enhances local Ca2+release incardiac *** results underscore the importance of regulation of β-adrenergic stimulation on local intermolecular signals between LCCs and RyRs inheart cells.

关键词： local calcium release calcium signaling cardiac myocytes isoprenaline confocal microscopy

Synthesis of 6-aryl substituted 3.(5'-phenyl-2H-tetrazole-2'-methylene)-S-triazolo[3.4-b]-1,3.4-thiadiazoles

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Chinese Journal of chemistry 1995年第5期13卷 448-453页

作者： ZHANG, Zi-Yi ZOU, NingNational Laboratory of Applied Organic chemistry, department of chemistry, Lanzhou {3., Lanzhou, Gansu 73.000, china National Laboratory of Applied Organic chemistry Department of Chemistry Lanzhou University Lanzhou Gansu 7S0000 China

In this paper , 10 novel 6-aryl-3.(5'-phenyl-2H-tetrazole-2'-methylene)-S-triazolo[3. 4-b]-1,3.4-thiadiazoles have been synthesized by the condensation of 3.(5'-phenyl-2H-tetrazole-2'-methylene)-4-amino-5-mercapto-1,2,4-triazole with various aromatic carboxylic acids in the presence of phosphorus oxychloride. The structure of these compounds was determined by elemental analysis , UV, IR, 1H NMR and MS. Their spectral properties were also discussed.

关键词： S-triazolo[3.4-b]-1,3.4-thiadiazole synthesis spectral analysis

Studies on the Interaction of 12-Tungstophosphoric Acid and Diethylene Glycol

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Chemical Research in Chinese Universities 1993年第4期9卷 317-323页

作者： ZHAO Yu-sheng, HUA Shi-ying , WU Tong-hao and WEI Quan (department of chemistry, jilin {3., Changchun, 13.023. Worked in Institute of Theoretical chemistry, jilin {3., Changchun.

The homogeneous system of 12-tungstophosphoric acid and diethylene glycol was studied using IR and NMR spectra. It was found that the protons in 12-tungstophosphoric acid formed proton oxonium ions with the hydroxyl oxygen in diethylene glycol by hydrogen-bonds, and the formed proton oxonium ions could react with the terminal oxygens of heteropoly anions. The dehydration-cyclization mechanism of diethylene glycol in the presence of heteropoly acid was also proposed.

关键词： IR NMR Diethylene glycol Proton oxonium ions

Synthesis,crystal structure and thermal behavior of Rb(NTO)·H_2O

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Chinese Science Bulletin 2001年第1期46卷 45-49页

作者： HU Mancheng, GAO Shiyang, LIU Zhihong, SONG Jirong, XIA Shuping & YU Kaibei1. Institute of Applied chemistry, Shaanxi Normal university, Xi’an 710062, china 2. {3. of Chemical Engineering, Northwest university, Xi’an 710069, china 3. Chengdu Branch of Chinese Academy of Sciences, Chengdu 610041, china Institute of Applied chemistry Shaanxi Normal University Xi’an China department of Chemical Engineering Northwest University Xi’an China Chengdu Branch of Chinese Academy of Sciences Chengdu China

The Rb(NTO) .H2O crystal has been synthesized by reaction of 3.nitro-l,2,4-triazole-5-one (NTO) with Rb2CO3.in aqueous solution. Its crystal structure has been determined. The crystal belongs to monoclinic system. Crystal structure data: space group P21/ n; a = 0.63. 0(1), b = 0.824 1(2), c =1.296 4(3. nm; β = 97.90(1)°; V = 0.669 9 (2) nm3. Z = 4, Dc= 2.3.6 g/cm3.μ = 7.3.5 nm-1, F(000) = 448. An eight coordinated compound is formed between Rb+ with oxygen atoms and nitrogen atoms. A layer structure is formed by coordination bonds and hydrogen bonds. The thermal decomposition mechanism of this coordination compound is discussed.

关键词： Rb-NTO coordination compound crystal structrue thermal decomposition.

Rank of loop, constraint degree of path, coupling degree of graph and their application

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Progress in Natural Science:Materials International 2005年第2期15卷 79-85页

作者： YANG Tingli1*, LUO Yufeng2, ZHANG Ce3.and YAO Fanghua1(1. SINOPIC Jinling Petrochemical Corp., Nanjing 21003., china 2. department of Mechanical Engineering, Nanchang university, Nanchang 3.0029, china 3. department of Mechanical Engineering, Tianjin university, Tianjin 3.0072, china) Jinling Petrochemical Corp. SINOPIC Nanjing 210037 China Dept. of Mechanical Eng. Nanchang Univ. Nanchang 330029 China Dept. of Mechanical Eng. Tianjin Univ. Tianjin 300072 China

Some new concepts (rank of a loop, degree of freedom of a graph, path unit and ordered path arrangement, constraint degree of path, coupling degree of a graph, basic graph, etc.), formulas, and algorithms, are proposed in this paper. Based on these concepts, a new systematic theory and practical method for the design of topological structure, kinematics and dynamics of mechanical systems is established. Some conjectures and problems needed to be researched are also put forward. The concepts, formulae and algorithms presented in this paper will find wide potential applications.

关键词： rank of loop degree of freedom of graph constraint degree of path coupling degree of graph

Density functional study on enantioselective reduction of keto oxime ether with borane catalyzed by oxazaborolidine

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Science china chemistry 2006年第4期49卷 296-307页

作者： LI Ming1, ZHENG Wenxu2 & TIAN Anmin2 1. department of chemistry, Southwest-china Normal {3., Chongqing 400715, china 2. department of chemistry, Sichuan {3., Chengdu 610064, china department of chemistry Southwest-China Normal University Chongqing China department of chemistry Sichuan University Chengdu China

The enantioselective reduction of keto oxime ether with borane catalyzed by oxazaborolidine is discussed by the density functional theory (DFT) method. The main intermediates and transition states for this reaction are optimized completely at the B3.YP/6-3.g(d) level, and the transition states are verified by vibrational modes. As shown, the chirality-controlled steps for this re- action are the hydride transfer from borane to carbonyl carbon and oxime carbon of keto oxime ether, and the chirality for the reduced products is determined in these two reaction steps. In all examined reaction paths, the first hydride is transferred via a six-membered ring and the second hydride via a five-membered ring or a four-membered ring.

关键词： keto oxime ether, oxazaborolidine, enantioselective reduction, DFT.

Syntheses of Ferrierite and Mordenite Zeolites from Dried Gel in Alcoholic System

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Chemical Research in Chinese Universities 1995年第4期11卷 364-366页

作者： DU Hong-bin QIU Shi-lun and PANG Wen-qin(department of chemistry,jilin {3.,Changchun,13.023. jilin UNIV DEPT CHEMCHANGCHUN 130023PEOPLES R CHINA

ＳｙｎｔｈｅｓｅｓｏｆＦｅｒｒｉｅｒｉｔｅａｎｄＭｏｒｄｅｎｉｔｅＺｅｏｌｉｔｅｓｆｒｏｍＤｒｉｅｄＧｅｌｉｎＡｌｃｏｈｏｌｉｃＳｙｓｔｅｍＤＵＨｏｎｇ－ｂｉｎ；ＱＩＵＳｈｉ－ｌｕｎａｎｄＰＡＮＧＷｅｎ－ｑｉｎ（Ｄｅ... 详细信息

ＳｙｎｔｈｅｓｅｓｏｆＦｅｒｒｉｅｒｉｔｅａｎｄＭｏｒｄｅｎｉｔｅＺｅｏｌｉｔｅｓｆｒｏｍＤｒｉｅｄＧｅｌｉｎＡｌｃｏｈｏｌｉｃＳｙｓｔｅｍＤＵＨｏｎｇ－ｂｉｎ；ＱＩＵＳｈｉ－ｌｕｎａｎｄＰＡＮＧＷｅｎ－ｑｉｎ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔ...

关键词： Synthesis Zeolite Mordenite Ferrierite Alcoholic system

X-ray spectra induced in highly charged 40Ar^q+ interacting with Au surface

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Science china(Physics,Mechanics & Astronomy) 2006年第2期49卷 203-212页

作者： ZHANG Xiao’an1,2, XIAO Guoqing1, YANG Zhihu1, CHEN Ximeng3. ZHAO Yongtao1, LI Fuli4, ZHANG Yinping1, CUI Ying3. ZHANG Hongqiang3. XU Xu3. SHAO Jianxiong3.& ZHAN Wenlong11. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73.000, china 2. department of Physics, Xianyang Normal university, Xianyang 712000, china 3. department of Modern Physics, Lanzhou university, Lanzhou 73.000, china 4. department of Applied Physics, Xi’an Jiaotong university, Xi’an 710049, china Institute of Modern Physics Chinese Academy of Sciences Lanzhou China department of Physics Xianyang Normal University Xianyang China department of Modern Physics Lanzhou University Lanzhou China department of Applied Physics Xi’an Jiaotong University Xi’an China

By use of optical spectrum technology, the spectra of X-ray induced by highly charged 40Arq+ ions interacting with Au surface have been studied. The results show that the argon Kα X-ray were emitted from the hollow atoms formed below the surface. There is a process of multi-electron exciting in neutralization of the Ar16+ion, with electronic con-figuration 1s2 in its ground state below the solid surface. The yield of the projectile Kα X-ray is related to its initial electronic configuration, and the yield of the target X-ray is related to the projectile kinetic energy.

关键词： highly charged ion hollow multi-electron excitation X- ray.

Novel Properties of Supramolecular Complexes Formed by Pairing Cationic Porphyrin and Anionic Metal-Oxo Cluster

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Chinese Chemical Letters 2000年第9期11卷 831-834页

作者： Shu Qing LIU Ji Qing XU Hao Ran SUN department of chemistry, jilin {3., Changchun 13.023 department of chemistry Jilin University Changchun 130023 China

MTBPyP (meso-tetrakis(4-N-benzylpyridyl)porphyrin, M=H-2, Zn) bearing positive charge has been shown to associate with SiW12O404- in water solution. The spectral evolution and Job's plots analyses reveal that the rela... 详细信息

关键词： cationic porphyrin anionic metal-ore cluster ion pair supramolecular complex