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chinese Chemical Letters 1998年第9期9卷 881-884页

作者： feng Mei NIE Ru Ji WANG Yan Mei LI Yu Fen ZHAO (Bio-organic Phosphorus chemistry Laboratory, department of chemistry,tsinghua university, beijing, 100084)Munirathinam NETHAJI Akhil R. CHAKRAVARTY (department of Inorganic and Physical chemistry, Ind Bio-Organ. Phosphorus Chem. Lab. Department of Chemistry Tsinghua University Beijing 100084 China department of Inorganic chemistry Indian Institute of Science Bangalore 560 012 India

Reaction of Zn(ClO4)2·6H2O with septadentate 2,6-bis[bis(2-benzimidazolylme-thyl)amino methyl]-4-methylphenol (Hbbap) and sodium isonicotinate yielded a dinuclear zinc complex[Zn2(bbap) (Iso) (Hiso)] (ClO4)2·[Zn2 (bbap) (Iso) (H2O)] (ClO4)2·4H2O(1a·1b·4H2O). Hiso isisonicotinic acid and Iso is isonicotinate anion. The structure has been established by X-raycrystallography and shows that the two zinc ions are bridged by the phenoxy unit of bbap- ligand,and the presence of unusual monodentate O-coordination of carboxylate group from isonicotinicacid. The coordination geometry around the zinc ion is approximately trigonal bipyramidal.

关键词： zinc complex isonicotinate metalloenzyme crystal structure

O-phosphorylation of Oligopeptides with Phosphoramidite

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chinese Chemical Letters 1998年第12期9卷 0-0+0-0页

作者： Yan Met LI Yu Fen ZHAO (Bio-organic Phosphorus chemistry Laboratory, department of chemistry,tsinghua university, beijing 100084)Herbert WALDMANN (institute of Organic chemistry, university of Karlsruhe, 76128 Karlsfuhe, Germany) Tsing Hua Univ Dept Chem Bioorgan Phosphorus Chem Lab Beijing 100084 Peoples R China Univ Karlsruhe Inst Organ Chem D-76128 Karlsruhe Germany

Phosphopeptides were synthesized with bis-alkyloxy-N,N-dialkylphosphorfollowed by oxidation. Many hydroxyl groups in oligopeptides can be O-phosphorylated in onestep.

关键词： Phosphopeptide phosphoramidite

Cocrystal Phenomena of DABCO with Phenol Derivatives

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Chemical Research in chinese Universities 1993年第3期9卷 261-263页

作者： GUO Wen-sheng (department of chemistry, Liaoning Normal university, Dalian, 116022)TIAN Zhi-yue, lu Yang and ZHENG Qi-tai (institute of Meteria Medica, chinese academy of Medical sciences, beijing, 100050)

It has been reported that 1,4-diazabicyclo[2,2,2] octane(DABCO) can form complexed crystals with lithium alkals. Our experimental results show that DABCO can also form cocrystals with phenol derivatives such as phenol... 详细信息

关键词： Cocrystal phenomena DABCO Phenol derivatives

Assessment of candidate plant DNA barcodes using the Rutaceae family

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Science china(Life sciences) 2010年第6期53卷 701-708页

作者： luO Kun1,2,CHEN ShiLin1,CHEN KeLi2,SONG JingYuan1,YAO Hui1,MA XinYe1,ZHU YingJie3,PANG XiaoHui1,YU Hua1,LI XiWen1,4 & LIU Zhen2 1institute of Medicinal Plant Development,Peking Union Medical College,chinese academy of Medical sciences,beijing 100193,china 2College of Pharmacy,Hubei university of chinese Medicine,Wuhan 430061,china 3School of Bioscience and Engineering,Southwest Jiaotong university,Chengdu 610031,china 4department of chemistry,tsinghua university,beijing 100084,china 1. institute of Medicinal Plant Development Peking Union Medical College Chinese Academy of Medical Sciences Beijing 100193 China2. College of Pharmacy Hubei University of Chinese Medicine Wuhan 430061 China3. School of Bioscience and Engineering Southwest Jiaotong University Chengdu 610031 China4. Department of Chemistry Tsinghua University Beijing 100084 China

DNA barcoding is a rapidly developing frontier technology that is gaining worldwide ***,seven regions (psbA-trnH,matK,ycf5,rpoC1,rbcL,ITS2,and ITS) with potential for use as DNA barcodes were tested for their ability to identify 300 samples of 192 species from 72 genera of the family *** evaluate each barcode’s utility for species authentication,PCR amplification efficiency,genetic divergence,and barcoding gaps were *** found that the ITS2 region exhibited the highest inter-specific divergence,and that this was significantly higher than the intra-specific variation in the "DNA barcoding gap" assessment and Wilcoxon two-sample *** ITS2 locus had the highest identification efficiency among all tested *** a previous study,we found that ITS2 was able to discriminate a wide range of plant taxa,and here we confirmed that ITS2 was also able to discriminate a number of closely related ***,we propose that ITS2 is a promising candidate barcode for plant species identification.

关键词： DNA barcoding ITS2 Rutaceae identification

DETERMINATION OF VOLATILE PHENOLS IN chinese LIQUORS BY GC-MS

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chinese Chemical Letters 1990年第2期1卷 187-190页

作者： Chun Sheng LIU Jia Rui GUAN Mao Sun lu Chang Tai YAN institute of Materia Medica,chinese academy of Medical sciences,beijing,china 100050 chemistry department,Shandong university,Jinan,china 250100 chemistry department,Qingdao university,Qingdao,china 266071

A new method for determining volatile phenols in chinese liquors is proposed. Phenols are sorbed on a macroporous anion-exchange resin after the liquors were brought to a pH value of 12.5,then eluted with HCl-acetone,extracted with methylene dichloride and concentrated to a suitable concentration for derivatization with pentafluorobenzyl bromide (PFB).The PFB derivatives of phenols were successfully separated by gas chromatography on a 30 m SE-54 elastic glass capillary column and detected with Ni-63 electron capture detec- *** characteristics of this method are:high sensitivity,low interference and 95% average recovery of *** method was used successfully in the determination of vola- tile phenols in eight kinds of chinese liquors.

关键词： SE GC

Evaluation of non-covalent interaction between Seryl-Histidine dipeptide and cyclophilin A using NMR and molecular modeling

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Science china chemistry 2010年第9期53卷 1987-1993页

作者： LIU Yan1,SHI YanHong2,LIU XiaoXia1,LIN MingKun1,LIN DongHai1,2 & ZHAO YuFen1,3 1Key Laboratory for Chemical Biology of Fujian Province,department of Chemical Biology,department of chemistry,College of chemistry and Chemical Engineering,Xiamen university,Xiamen 361005,china 2Shanghai institute of Materia Medica,Shanghai institutes of Biological sciences,chinese academy of sciences,Shanghai 201203,china 3Key Laboratory for Bioorganic Phosphorus chemistry and Chemical Biology,Ministry of Education,department of chemistry,School of Life sciences and Engineering,tsinghua university,beijing 100084,china 1. Key Laboratory for Chemical Biology of Fujian Province Department of Chemical Biology Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China2. Shanghai Institute of Materia Medica Shanghai Institutes of Biological Sciences Chinese Academy of Sciences Shanghai 201203 China3. Key Laboratory for Bioorganic Phosphorus Chemistry and Chemical Biology Ministry of Education Department of Chemistry School of Life Sciences and Engineering Tsinghua University Beijing 100084 China

Seryl-Histidine dipeptide(Ser-His) has been previously reported to be capable of cleaving DNAs and carboxyl esters,as well as *** protein cleavage mechanism has not been addressed *** an initial step of protein cleavage activity,the non-covalent binding affinity of Ser-His for proteins is a crucial *** this work,we took cyclophilin A(CyPA) as a substrate protein,and evaluated the non-covalent interaction between CyPA and Ser-His using a combination of NMR spectroscopy and molecular modeling *** independent Ser-His binding sites on CyPA were detected using 15N-1H heteronuclear single-quantum coherence(HSQC) *** binding site binds one Ser-His *** constants,Kd1 and Kd2,were estimated to be 2.07 and 6.66 mmol/L,respectively,indicative of the weak non-covalent interaction between Ser-His and *** on molecular modeling results,we suggest that both the α-amino and the side chain hydroxyl group of Ser-His are crucial for the non-covalent interaction between Ser-His and *** work sheds light on the molecular mechanism of Ser-His and its analogues cleaving proteins.

关键词： Ser-His cyclophilin A HSQC non-covalent interaction binding sites

Removal of Volatile Organic Compounds by Adsorption and Photocatalytic Oxydation

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Journal of Wuhan university of Technology(Materials Science) 2007年第3期22卷 450-452页

作者：许德平黄正宏 Lab of Advanced Materials Department of Materials Science and EngineeringTsinghua University School of Chemical and Environmental Engineering China University of Mining and Technology

Based on the study of equilibrium adsorption on viscose rayon-based activated carbon fiber （ACF） by gravimetric method, mounting of TiO2 on PAN-based activated carbon cloth （ACC） and their photocatalytic activity as well as adsorption performance for benzene were investigated. The crystallinity of TiO2 and pore structure were characterized by XRD and N2 adsorption. The results show that crystallinity of TiO2 and pore structure could be postulated by heat treatment condition. Both crystallinity of TiO2 and pore structure of hybrid have effects on photocatalytic performance of TiO2-mounted ACC. It would be more attractive and prospective for the combination of TiO2 photocatalytic activity and adsorption ability of porous materials.

关键词： volatile organic compounds activated carbon cloth TiO2

Principle of a Multistage Electroosmotic Pump and Its Application in Microfluidic Chip

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Principle of a Multistage Electroosmotic Pump and Its Applic...

Archean relic body at lower crust in Sulu area:Evidence from magnetic data

第二届全国微全分析系统学术会议

作者： CHEN Ling-Xin, GUAN Ya-feng (department of chemistry, tsinghua university, beijing 100084, china Dalian institute of Chemical Physics, chinese academy of sciences, Dalian 116012, china)

＜正＞ In the past decade,a variety of microfabricated pumps and fluid-handling systems based on ultra-sonic,electricity,light,magnet and heat actuated technologies were reported,which could be clas-sifted into two groups:membrane-displacement pumps and field-induced flow *** advantageof field-induced flow pumps over the former is that they do not require moving parts,such as check

关键词： Electroosmotic pump Multi-stage Micro total analysis system

来源： cnki会议评论

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chinese Science Bulletin 2003年第6期48卷 589-593页

作者： WU Qifan1,2, lu fengxiang3, LIU Qingsheng3, ZHENG Jianping3, WANG Maoji2 & WU Wenli4 1. department of Engineering Physics, tsinghua university, beijing 100084, china 2. Aero Geophysical Survey & Remote Sensing Center, beijing 100083, china 3. china university of Geosciences, Wuhan 430074, china 4. institute of Geophysical & Geochemical Exploration, Langfang 065000, china Aero Geophysical Survey & Remote Sensing Center Beijing 100083 China china university of Geosciences Wuhan 430074 China institute of Geophysical & Geochemical Exploration Langfang 065000 China department of Engineering Physics Tsinghua University Beijing 100084 China

After the new 1︰1000000 aero magnetic data were processed and the three-dimensional inversion work was carried out, a vast high magnetic body northwestward was discovered. The magnetic body is located at the depth of about 20 km on the west side of Tanlu fault and at about 25 km on the east side of Tanlu fault beneath the Sulu area. There is a difference of vertical distance of 3—5 km in depth between both sides. We think that the magnetic body is an Archean metamorphic plate and belongs to the North china block. The discovery of the magnetic body is significant for us to reconstruct the structure model of the Sulu orogenic belt, delineate the suture of collision between the North china block and the Yangtze block, and estimate the depth of slipping surface when the eastside of Tanlu fault moved northward.

关键词：苏鲁地区地壳下层太古代残余体地球物理调查区域性磁场三维反演苏鲁造山带郯鲁断裂带大别-苏鲁超高压变质带

REACTION OF C_60 AND 2-AMINO-ETHYLHYDROGENSULFATE

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chinese Chemical Letters 1995年第3期6卷 199-200页

作者： Liang Bing GAN De Jian ZHOU Chu Ping luO Chun Hui HUANG Jin Qi PAN Mu Jian lu (department of chemistry,Peking university.beijing.100871)Yi WU(beijing institute of Microchemistry,beijing.100091) beijing Univ Dept Chem Beijing 100871 Peoples R China beijing Inst Microchem Beijing 100091 Peoples R China

C60 reacts with 2-aminoethylhydrogensulfate to give a mixture of mono-and bispiperazine fullerene adducts C60(C4H8N2)1-2 and a water-soluble fullerence derivative C60Hn(NHCH2CH2OSO3Na)n.

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