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Science china Chemistry 2011年第1期54卷 154-160页

作者： ZHAO DeFeng,ZHU Tong,CHEN Qi,LIU YingJun & ZHANG ZeFeng State Key Joint Laboratory of Environmental Simulation and Pollution Control college of Environmental sciences and Engineering,Peking university,beijing 100871,china 1. State Key Joint Laboratory of Environmental Simulation and Pollution Control college of Environmental sciences and Engineering Peking University Beijing 100871 China

Investigating the heterogeneous reaction on individual atmospheric particles is important because it approximates actual atmospheric conditions and can aid in reducing artifacts in elucidating real mechanisms and processes,and determining real kinetic parameters of the atmosphere *** study developed a Raman microspectrometry method to investigate heterogeneous reactions on individual *** method was applied to the reaction of NO2 with individual CaCO3 *** was demonstrated that Raman microspectrometry can obtain information on both chemical composition and microscopic morphology at the same time,as well as information on chemical characteristics,such as the phase,which is useful for studying reaction *** spectra of individual particles deposited on a substrate showed no interference by morphological resonance,which is helpful for obtaining high-quality ***,Raman microspectrometry was compared with other methods for investigating heterogeneous reactions on individual particles and was found to have several advantageous characteristics.

关键词： Raman microspectrometry individual atmospheric particle heterogeneous reaction

STUDY ON THE GROWTH OF STOICHIOMETRIC DOPED LINBO3 CRYSTALS AND ITS APPLICATION TO VOLUME HOLOGRAPHIC STORAGE

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STUDY ON THE GROWTH OF STOICHIOMETRIC DOPED LINBO3 CRYSTALS ...

半参数回归模型中误差方差估计的Berry-Esseen界

第8届国际材联电子材料国际研讨会

作者： Guoqing Liu, Jinwei Liu, Zhuqing Jiang, Dayong Wang college of applied sciences, beijing Polytechnic university beijing 100022, china

In this paper, according to stoichiometry, the Tb:Fe:LiNbO crystals with no defect, were grown from melt by Czochraski technique. We discussed the possible reasons whyit is difficult to grow the stoichiometric LiNbO (SLN). By selecting the optimal growth conditions and the excellent measures, we successfully obtained some Tb:Fe:LiNbO crystals with different impurity density. We have grown the Tb:Fe:LiNbO (Li/Nb=1.05). The experiments showed that the doped SLN crystal’s structure are regular and the optical

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数学学报（中文版） 2005年第1期48卷 157-170页

作者：薛留根北京工业大学应用数理学院北京100022

综合最小二乘法和局部线性光滑法给出了半参数回归模型中误差方差的估计量σ_n^2,在适当的条件下,证明了σ_n^2的Berry-Esseen界可达到O(n-1／2).

关键词： Berry-Esseen界半参数回归模型估计量证明线性方差估计光滑中误差最小二乘法综合

SYNTHESIS AND CHARACTERIZATION OF PHTHALAZINONE POLY(ARYL ETHER SULFONE KETONE)WITH CARBONYL GROUP

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Chinese Journal of Polymer Science 2002年第3期20卷 225-229页

作者： Ying-nan Xuan Yan Gao Yong Huang Xi-gao Jian Laboratory of Cellulose and Lignocellulosics Chemistry Guangzhou Institute of Chemistry Chinese Academy of sciences, Guangzhou 510650 china Institute of Chemistry Chinese Academy of sciences, beijing 100080 china Department of Polymer Science, college of Chemical Engineering Dalian university of Technology, Dalian 116012, china Chinese Acad Sci Guangzhou Inst Chem Lab Cellulose & Lignocellulos Chem Guangzhou 510650 Peoples R China Chinese Acad Sci Inst Chem Beijing 100080 Peoples R China Dalian Univ Technol Coll Chem Engn Dept Polymer Sci Dalian 116012 Peoples R China

A kind of novel heat-resistant, high performance engineering thermoplastic phthalazinone poly(aryl ether sulfone ketone) (PPESK) containing a carboxyl group in its side chain was prepared by the nucleophilic displacement reaction of 4-(4-hydroxylphenyl)- 1 (2H)-phthalazinone with di(4-chlorophenyl) sulfone, 4,4'-difluoro-benzophenone and phenolphthalin in sulfolane in the presence of K2CO3 to produce high molecular weight polymers which can be dissolved in some polar solvents such as chloroform and nitrobenzene at room temperature and can be easily cast into flexible, yellowish and transparent films. PPESK is an amorphous polymer having a decomposition temperature above 400degreesC, which indicates that it has high thermal stability. At the same time, the thermal properties of PPESKs with dicyandiamide (DICY) as curing agent indicated that the heat-resistance properties of the PPESKs are improved after curing. The apparent activation energy (A-E) of the cross-linking reaction and the reaction order (n) of PPESK/DICY were found to be 52.2 kJ/mol and ca. 1.0, respectively. Therefore, the cross-linking reaction is approximately a first order reaction.

关键词： poly(aryl ether sulfone ketone) synthesis active pendant group

The Site-Specific Hydrolysis of l-β-Hydroxybaccatin Ⅱ by Aspergillus Niger

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Chinese Chemical Letters 1996年第12期7卷 1091-1092页

作者： Jun Zeng ZHANG Li He ZHANG(The National Research Laboratories of Natural and Biomimetic Drugs School of pharmaceutical sciences, beijing Medical Uaiversity, beijing 100083)Di An SUN Jian Qiao GU Qi Cheng FANG(Institute of Materia MedicaChinese Academy Natl. Res. Labs. Nat./Biomimetic D. School of Pharmaceutical Sciences Beijing Medical University Beijing 100083 Institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050

The site-specific microbiological hydrolysis of a natural 1β-hydroxybaccatin I, with the culture of Aspergillus niger. is described.

关键词： Site The Site-Specific Hydrolysis of l Hydroxybaccatin by Aspergillus Niger

Occurrence and Culture of Mycorrhizal Fungi Associated with Oaks in Dandong Region, Liaoning Province

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Pedosphere 2005年第2期15卷 232-237页

作者： WANGHui DAILi-Min YANGBao-Shan LANGQing-Long GUHui-Yan InstituteofappliedEcology ChineseAcademyofSciencesShenyang110016（China）／／GraduateSchoolofChineseAcademyofSciencesBeijing100039（China） InstituteofappliedEcology ChineseAcademyofSciencesShenyang110016（China） InstituteofLiaoningSericulturalScience Fengcneng118100（China） InstituteofappliedEcology ChineseAcademyofSciencesShenyang110016（China）／／CollegeofForestryNortheastForestryUniversityHarbin150040（China）

With both field investigation and pure culture experiments, the occurrence and optimal essential growth of mycorrhizal fungi with oaks in Dandong Region of Liaoning Province, china were investigated from 1997-2002 A total of 36 species of mycorrhizal fungi associated with oaks were observed. The results showed that the occurrence of mycorrhizal fungi was related to tree species, tree ages, and months of the year, with at least 20 fungi species being associated with more than two oak species. The highest Sim…

关键词： mycorrhizal fungi rnycorrhizal relationship oak pure culture

Inhalable particle matter (PM10) can induce and aggravate asthmatic inflammation in rats

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Inhalable particle matter (PM10) can induce and aggravate as...

Care of HIV-infected patients in china

The 5th Congress of Toxicology in Developing Countries

作者： Xiao-Hong Zhao, Xin-Biao Guo, Shi-Jie Liu Department of Biology, college of Arts and sciences of beijing union university Department of Occupational and Environmental Health sciences, School of Public Health, Peking university, beijing 100083, china

Inhalable particle matter (PM) is considered to play an important role in asthmatic airway inflammation. The aim of the present study was to investigate whether PM can induce or aggravate the asthmatic inflammation in sensitized rats. PM was collected on glass-fibre filters using a high-volume sampler, located nearly ur-

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Cell Research 2005年第Z1期 883-890页

作者： Yun Zhen CAO 1,*, Hong Zhou LU 2 1The AIDS Research Center, Chinese Academy of Medical sciences Peking union Medical college, beijing 100730, china 2Department of Infectious Diseases, Shanghai/FuDan Public Health Center & Huashan Hospital, Fudan university, Shang- hai 201508, china

Compared with high infection areas of the world, the total HIV infection rate in china is relatively low. Nonetheless, because of china’s vast territory and large population, the potential infection risk must be taken seriously. In the next few years, needle sharing among injection drug users will remain the most common route of transmission for the HIV/ AIDS epidemic in china. Unprotected sex is gradually becoming a major route of transmission. china began to imple- ment HAART in 1999 according to international standards. Prior to 2003, there were only about 150 HIV/AIDS patients were treated with HAART in some clinical trials and about 100 HIV/AIDS patients were treated by private sources. Results of those treatments are the scientific basis for development of the therapeutic strategies in china. In March of 2003, the Chinese government initiated china CARES program. In November of 2003, the Chinese Ministry of Health announced a national policy of free ARV treatment to all HIV+ Chinese citizens who were in poverty and required ARV therapy. There are total of 19,456 HIV/AIDS patients received free ARV drugs to date in 159 regions and 441 towns. Current challenges are how to follow-up and evaluate those patients in the clinical settings. The longer the therapy is postponed, the more side effects and the higher probability of drug resistance are going to occur. It remains unclear, therefore, when HAART regimen should be started in the HIV/AIDS population in china.

关键词： HIV/AIDS needle sharing unprotected sex HAART china CARES program.

Preparation of Glycyrrhetinic Acid Monoglucuronide by Selective Hydrolysis of Glycyrrhizic Acid via Biotransformation

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Chinese Herbal Medicines 2012年第4期4卷 324-328页

作者： LU Li1,2,ZHAO Yang1,YU He-shui1,2,HUANG Hong-zhi1,2,KANG Li-ping1,2,CAO Man1,2,CUI Jiang-ming1,YU Li-yan3,SONG Xin-bo2,MA Bai-ping1 1.beijing Institute of Radiation Medicine,beijing 100850,china 2.Tianjin university of Traditional Chinese Medicine,Tianjin 300193,china 3.Institute of Medicinal Biotechnology,Chinese Academy of Medical sciences and Peking union Medical college,beijing 100050,china [a] beijing Institute of Radiation Medicine Beijing 100850 China [b] Tianjin university of Traditional Chinese Medicine Tianjin 300193 China [c] Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100050 China

Objective To search for the microorganisms which have the high selectivity of hydrolyzing glycyrrhizic acid(GL) into 18β-glycyrrhetinic acid-3-O-β-D-glucuronide(GAMG) without glycyrrhetinic acid(GA) *** GL was biotransformed by Aspergillus sp.,the products were separated by chromatography on reverse phase C18 column and semi-preparative HPLC,and their structures were elucidated on the basis of HR-ESI-MS,1D NMR(1H-NMR,13C-NMR,and NOESY) and 2D NMR(1H-1H COSY,HSQC,and HMBC) spectral *** Aspergillus *** partially hydrolyze GL into GAMG(3),along with two minor byproducts,3-O-β-D-glucuronopyranosyl-18β-liquiritic acid(1) and 3-O-β-D-glucuronopyranosyl-24-hydroxy-18β-glycyrrhetinic acid(2).Conclusion Aspergillus *** the high selectivity of hydrolyzing GL into GAMG without GA byproduct and the yield of GAMG is about 60%.The complete assignments of 1H-NMR and 13C-NMR data for compounds 1 and 2 are reported for the first time.

关键词： Aspergillus sp. biotransformation 18β-glycyrrhetinic acid 3-O-β-D-glucuronide glycyrrhizic acid NMR

Evaluation of 10 plant barcodes in Bryophyta (Mosses)

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Journal of Systematics and Evolution 2010年第1期48卷 36-46页

作者： 1,2 Yan LIU 3 Hai-Fei YAN 4 Tong CAO 3 Xue-Jun GE 1(Institute of applied Ecology, Chinese Academy of sciences, Shenyang 110016, china) 2(Graduate university of the Chinese Academy of sciences, beijing 100049, china) 3(Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South china Botanical Garden, Chinese Academy of sciences, Guangzhou 510650, china) 4(college of Life & Environment sciences, Shanghai Normal university, Shanghai 200234, china) (Institute of applied Ecology Chinese Academy of Sciences Shenyang 110016 China) (Graduate university of the Chinese Academy of sciences Beijing 100049 China) (Key Laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 China) (college of Life & Environment sciences Shanghai Normal University Shanghai 200234 China) *Correspondence: Tong CAO Xue-Jun GE *Correspondence: *?Author for correspondence: E-mail: ct1946@*** xjge@*** Tel./Fax: 86-20-3725 2551.

DNA barcoding is a molecular tool that uses a standardized DNA region to identify *** preliminary study reported here is the first attempt to specifically focus on universality and attributes of candidate barcodes across a wide systematic range of *** tested eight previously proposed plant barcoding regions(atpF-atpH, ITS2, matK, psbK-psbI, rbcL, rpoB, rpoC1, and trnH-psbA) and two popular phylogenetic markers(rps4 and trnL-trnF of cpDNA) in 49 moss species and 9 liverwort species, representing half of the orders in moss *** ITS2, rbcL, rpoC1, rps4, trnH-psbA and trnL-trnF regions showed good universality, and therefore the efficacy of these loci as DNA barcodes was further evaluated in 36 mosses and 2 liverworts, each of which included two to three individuals per *** five loci, ***, rpoC1, rps4, trnH-psbA and trnL-trnF, were easy to amplify and sequence and showed significant inter-specific genetic variability, making them potentially useful DNA barcodes for *** best performing single loci were the rbcL and rpoC1 coding *** loci showed equivalent performance and combinations of them did not greatly increase their discrimination *** addition, phylogenies generated from each of the separate regions and multi-locus combinations by using best-fit and Kimura 2-parameter models were compared, but no significant difference was found.

关键词： Bryophyta DNA barcoding rbcL rpoC1 rps4 trnH-psbA trnL-trnF.