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Speciation of the elements and compositions on the surfaces of dust storm particles:The evidence for the coupling of iron with sulfur in aerosol during the long-range transport

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Chinese science Bulletin 2005年第8期50卷 738-744页

作者： ZHANG Xingying1,2. ZHUANG Guoshun1,2.3, CHEN Jianmin2.& XUE Huaxin2.1. Center for Atmospheric Environment Study, Department of Chemistry, Beijing Normal university, Beijing 100875, China 2. Center for Atmospheric Chemistry Study, Department of Environ- mental science and Engineering,{2., shanghai 2.0433, China 3. LAPC/NZC, Institute of Atmospheric Physics, NZC/LAPC, Chinese Academy of sciences, Beijing 10002., China Center for Atmospheric Environment Study Department of Chemistry Beijing Normal University Beijing 100875 China Center for Atmospheric Chemistry Study Department of Environmental Science and Engineering Fudan University Shanghai 200433 China LAPC/NZC Institute of Atmospheric Physics NZC/LAPC Chinese Academy of Sciences Beijing 100029 China

The speciation of the elements on the surface of the particles collected during dust storm and non-dust storm in Beijing and Inner Mongolia was studied by XPS. The ma- jor species of iron on the surface were oxides, sulfate, silicate, FeOOH and minor part sorbed on SiO2.Al2.3. Sulfate is the dominant species of sulfur on the surface. SiO2.and Al2.3 are the main components of Si and Al on the surface respectively. One of the most important findings was that the Fe(II) (FeS and FeSO4) produced could account for up to 44.3% and 45.6% of the total Fe on the surface in the aerosol sample collected at that night and next day of the “peak” time of the dust storm occurring on March 2., 2.02. while Fe2.SO4)3, one of the Fe(III) species on the surface decreased from 67.1% to 49.5% and 48.0% respectively. Both S and Fe en- riched on the surface of aerosol particles. Fe(II) accounted for 1.3%?5.3% of total Fe in bulk aerosol samples during dust storm. These results provided strong evidence to sup- port the hypothesis of the coupling between iron and sulfur in aerosols during the long-range transport, which would have important impact on the global biogeochemical cycle.

关键词：物种形成原理 XPS 大气悬浮物 Fe-S结合粒子集合

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The non-destructive analysis of ancient jade artifacts unearthed from the Liangzhu sites at Yuhang,Zhejiang

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science China(Technological sciences) 2010年第12期53卷 3404-3419页

作者： GAN FuXi1,3, CAO JingYan2. CHENG HuanSheng3, Gu DongHong1, RUI GuoYao2. FANG XiangMing2. DONG JunQing1 & ZHAO HongXia1 1Scientific Archeology Center, shanghai Institute of Optics and Fine Mechanics, Chinese Academy of sciences, shanghai 2.1800, China 2.Research Institute of Cultural Relics and Archeology of Zhejiang, Hangzhou 310014, China 3 fudan university, shanghai 2.0433, China 1. Scientific Archeology Center Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China3. Fudan University Shanghai 200433 China2. Research Institute of Cultural Relics and Archeology of Zhejiang Hangzhou 310014 China

Samples of the jade artifacts unearthed from the Liangzhu sites at Yuhang (Fanshan,Yaoshan, Huiguanshan and Tangshan) of Zhejiang province were described. The chemical composition, phase and jade structure of a hundred and more intact samples were analyzed by the non-destructive techniques of PIXE, XRD and laser Raman spectroscopy. Results showed that the minerals of the jade artifacts mostly belonged to tremolite and tremolite-actinolite. Relationship of the civilization development in the Neolithic age and the application of tremolite type mineral in jade artifacts was discussed. The contents of rare and trace elements in tremolite jade artfacts and in mineral samples were measured for the first time. The possible mineral sources of these tremolite type jade artifacts were discussed.

关键词： Liangzhu culture non-destructive analysis ancient jade artifacts essence and source

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Up-to-date issues and strategies for developing nanometrology standards

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生物物理学报 2009年第S1期25卷 171-172页

作者： Yan FANG1, Xinju Yang2.Zhanghai Chen2.1 Zhong Shan Hospital,fudan university, {2. XuHui Region 2.0032.136 Yi Xue Yuan Road 2.3}, {2. YangPu Region 2.0433 2.0 Han Dan Road

Unbroken chain of traceability is currently unsettled issues for developing national/ international nanometer scale metrology standards. The present paper will address

关键词： nanometrology Methods Standards Traceability

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Local and non-local sources of airborne particulate pollution at Beijing——The ratio of Mg/Al as an element tracer for estimating the contributions of mineral aerosols from outside Beijing

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science China Chemistry 2005年第3期48卷 253-264页

作者： HAN Lihui1, ZHUANG Guoshun1,2.3, SUN Yele1 & WANG Zifa3 1. The Center for Atmospheric Environmental Study, Department of Chemistry, Beijing Normal university, Beijing 100875, China 2. Center for Atmospheric Chemistry Study, Department of Environmental science & Engineering,{2., shanghai 2.0433, China 3. LAPC/NZC, Institute of Atmospheric Physics, CAS, Beijing 10002., China 1. The Center for Atmospheric Environmental Study Department of Chemistry Beijing Normal University 100875 Beijing China 2. Center for Atmospheric Chemistry Study Department of Environmental Science & Engineering Fudan University 200433 Shanghai China 3. Institute of Atmospheric Physics CAS LAPC/NZC 100029 Beijing China

A new element tracer technique has firstly been established to estimate the contri-butions of mineral aerosols from both inside and outside Beijing. The ratio of Mg/Al in aerosol is a feasible element tracer to distinguish between the sources of inside and outside Beijing. Mineral aerosol, inorganic pollution aerosol mainly as sulfate and nitrate, and organic aerosol are the major components of airborne particulates in Beijing, of which mineral aerosol accounted for 32.―67% of total suspended particles （TSP）, 10%―70% of fine particles （PM2.5）, and as high as 74% and 90% of TSP and PM2.5, respectively, in dust storm. The sources from outside Beijing contributed 62. （38%―86%） of the total mineral aerosols in TSP, 69% （52.―90%） in PM10, and 76% （59%―93%） in PM2.5 in spring, and 69% （52.―83%）, 79% （52.―93%）, and 45% （7%―79%） in TSP, PM10, and PM2.5, respectively, in winter, while only2.% in summer and autumn. The sources from outside Beijing contributed as high as 97% during dust storm and were the dominant source of airborne particulates in Beijing. The contributions from outside Bei-jing in spring and winter are higher than those in summer, indicating clearly that it was related to the various meteorological factors.

关键词： mineral aerosol local sources non-local sources dust storm re-suspended dust element tracer technique.

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A New Combination of Mutated loxPs in a Vector for Construction of Phage Antibody Libraries

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Acta Biochimica et Biophysica Sinica 2005年第7期37卷 495-500页

作者： Yu GAN~(1,2. Xin-Tai ZHAO~2. 1 shanghai Medical College,fudan {2.,shanghai 2.0032.China 2.Laboratory for Cellular and Molecular Immunology,Cancer Institute,shanghai Jiaotong {2.,shanghai 2.0032.China shanghai Medical College Fudan University Shanghai 200032 China

In the construction of large antibody libraries by in vivo recombination,two non-homogeneousloxP sites are required for the exchange of V genes between phagemids to create many new *** mutated loxP511 was designed not to recombine with the wild-type loxP （loxPwt） in early studies anda combination of the two has been used to construct antibody *** recent reports have shown thatrecombination occurs between loxPwt and *** suggests that the combinational use of loxP511and loxPwt might lead to the loss of the V gene diversity of antibody ***,it is necessary tofind a new combination of loxPs to avoid the excision recombination in the antibody *** this study,we found that the excision recombination between loxP511 and loxP2.72.another mutated loxP sequence,was undetectable within one phagemid,while the excision recombination between loxP511 and loxPwtoccurred at a frequency of 40%.higher than that reported ***,the in vivo recombinationof different phagemids with loxP511 and loxP2.72.showed that the V gene exchange was efficiently mediatedto produce new *** was concluded that the loxP511 and loxP2.72.combination wasmore favorable for reducing the excision recombination and constructing large phage antibody libraries withhigh diversity.

关键词： mutated loxP excision recombination phage antibody library

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Microstructure and Tensile Properties of Yttria Coated-Alumina Particulates Reinforced Aluminum Matrix Composites

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Journal of Materials science & technology 2005年第1期21卷 68-70页

作者： Zhiqiang YU, Gaohui WU, Longtao JIANG and Dongli SUNSchool of Materials science and Engineering, Harbin Institute of technology, Harbin 150001, ChinaPresent address: Department of Materials science, fudan university, shanghai 2.0433, ChinaPh.D., to Sch. of Mat. Sci. and Eng. Harbin Inst. of Technol. Harbin 150001 China

The liquid-phase coating method was used to deposit Y2.3 ceramic on the surface of α-Al2.3. The coated-Al2.3p/6061AI composites were produced using squeeze casting technology. The microstructure and tensile properties of the composites were analysed and studied. The results showed that the coated AI2.3 particles are able to disperse homogeneously in the aluminum liquid. The microstructure of the composites is more even in comparison with that of as-received powders. The tensile testing indicated that mechanical properties of the coated-AI2.3p/6061AI composites are better than those of uncoated particles. In the composite with 30% volume fraction, the tensile strength, yield strength as well as elongation is increased by 2..8%, 38.4% and 10.3%, respectively. The SEM analysis of fracture indicated that the dimples of the coated-Al2.3p/6061Al composites are more even.

关键词： Submicron alumina powders Rare-earth oxide coating Microstructure Mechanical properties Aluminum matrix composite

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Main chemical ingredients of the celadon glaze from Qingliangsi kiln and Zhanggongxiang kiln

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science China(Physics,Mechanics & Astronomy) 2006年第4期49卷 487-495页

作者： ZHAO Weijuan1, LU Xiaoke1, LI Guoxia1, GUO Min1, XIE Jianzhong1, GAO Zhengyao1, SUN Xinmin2. GUO Musen2. CHENG Huansheng3 & ZHANG Bin3 1. Faculty of Physical Engineering, Zhengzhou university, Zhengzhou 450052. China 2. Research Institute of Cultural Relic and Archaeology, Henan Province, Zhengzhou 450004, China 3. Research Institute of Modern Physics, fudan university, {2. 2.0433, China 1. Faculty of Physical Engineering Zhengzhou University Zhengzhou 450052 China 2. Research Institute of Cultural Relic and Archaeology Henan Province Zhengzhou 450004 China 3. Research Institute of Modern Physics Fudan University Shanghai 200433 China

The proton induced X-ray emission (PIXE) is used to determine the chemical ingredients of seven main elements in the samples of Ru Guan porcelain glazes and Ru Civil porcelain from Qingliangsi kiln in Baofeng County and the samples of celadon glaze from Zhanggongxiang kiln in Ruzhou City. The PIXE data are then analyzed by scatter analysis and fuzzy cluster method for determining their classification and provenance. The results show that there are obvious differences between the ingredients of glaze material of Ru Guan porcelain and Ru Civil porcelain from Qingliangsi kiln, of which the former ingredients are stable and its source is localized, and that the sources and ingredients of the glaze of Ru Guan porcelain and those of celadon glaze from Zhanggongxiang kiln are not wholly the same, of which the latter sources are much scattering.

关键词： Zhanggongxiang kiln, Qingliangsi kiln, the source of raw material, the proton induced X-ray emission.

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Conformational re-analysis of(+)-meptazinol:an opioid with mixed anal-gesic pharmacophores

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Acta Pharmacologica Sinica 2006年第9期27卷 1247-1252页

作者： Wei LI~2.Xing-hai WANG~2.Choi-wan LAU~3 Yun TANG~(2.4)Qiong XIE~2.Zhui-bai QIU~(2.5)2.Department of Medicinal Chemistry 3 NMR Laboratory,School of Pharmacy,fudan university,{2. 2.0032.China 4 School of Pharmacy,East China university of science and technology,{2. 2.02.7,China DepartmentofMedicinalChemistry NMRLaboratory SchoolofPharmacyFudanUniversityShanghai200032China SchoolofPharmacy EastChinaUniversityofScienceandTechnologyShanghai200237China

Aim:To further investigate the analgesic pharmacophore of(+)-***:Two different opioid pharmacophores,Pharm-Ⅰ and Pharm-Ⅱ,were es-tablished from structures of nine typical opiates and meperidine by using molecu-lar modeling approaches according to their different structure activity relation-ship *** were further validated by a set of conformationally con-strained *** conformers of(+)-meptazinol(Conformer-Ⅰ and Con-former-Ⅱ)detected in solution were then fitted into the pharmacophores,respectively,by Fit Atoms facilities available in SYBYL,a computational modelingtool kit for molecular design and ***:Conformer-Ⅰ fit Pharm-Ⅰ fromtypical opiates ***,Conformer-Ⅱ fit none of these ***,it was found to be similar to another potent analgesic,benzofuro[2.3-c]pyridin-6-ol,whose pharmacophore was suggested to hold the transitional statebetween the two established *** typical analgesics derivedfrom 4-aryl piperidine(eg,meperidine)with one conformer absolutely overwhelming,the(+)-meptazinol exists in two conformers with similar amounts in ***,both conformers can not transform to each other freely in ordinaryconditions based on our NMR ***:(+)-meptazinol was suggestedto be an opioid with mixed analgesic pharmacophores,which may account for thecomplicated pharmacological properties of meptazinol.

关键词： (+)meptazinol opioid analgesics arylpiperidines Conformational Analysis,pharmacophore.

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A meta-analysis of oxidative stress markers in schizophrenia

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中国科学：生命科学英文版 2010年第1期53卷 112-124页

作者： ZHANG Ming1,2.ZHAO ZhongMing3,HE Lin1,2.4 & WAN ChunLing1,2.1 Bio-X Center,Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders(Ministry of Education),shanghai Jiao Tong university,shanghai 2.0030,China 2.Institutes for Nutritional sciences,shanghai Institute of Biological sciences,Chinese Academy of sciences,shanghai 2.0031,China 3 Departments of Biomedical Informatics,Psychiatry,and Cancer Biology,Vanderbilt university Medical Center,Nashville,TN 372.2.USA 4 Institutes of Biomedical sciences,fudan university,shanghai 2.0032.China 1. Bio-X Center Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education) Shanghai Jiao Tong University Shanghai 200030 China2. Institutes for Nutritional Sciences Shanghai Institute of Biological Sciences Chinese Academy of Sciences Shanghai 200031 China3. Departments of Biomedical Informatics Psychiatry and Cancer Biology Vanderbilt University Medical Center Nashville TN 37232 USA4. Institutes of Biomedical Sciences Fudan University Shanghai 200032 China

Oxidative stress has been identified as a possible element in the neuropathological processes of schizophrenia(SCZ).Alteration of oxidative stress markers has been reported in SCZ studies,but with inconsistent *** evaluate the risk of oxidative stress to schizophrenia,a meta-analysis was conducted,including five markers of oxidative stress [thiobarbituric reactive substances(TBARS),nitric oxide(NO),catalase(CAT),glutathione peroxidase(GP) and superoxide dismutase(SOD)] in SCZ patients versus healthy *** study showed that TBARS and NO significantly increased in SCZ,while SOD activity significantly decreased in the disorganized type of SCZ *** significant effect size was found for the activities of GP and CAT in SCZ patients(P>0.05).Egger’s regression test observed no significant publication bias across the oxidative stress markers,but found high heterogeneities in all the 5 *** subgroup analysis suggested that the ethnicity,sample size of patients and sample sources may contribute to the heterogeneity of the results for TBARS,NO and *** result further demonstrated the involvement of oxidative stress in the pathophysiology of schizophrenia.

关键词： schizophrenia oxidative stress meta-analysis lipid peroxidation nitric oxide antioxidant enzymes

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Dynamic Monte Carlo simulation of chain growth polymerization and its concentration effect

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science China Chemistry 2005年第5期48卷 459-465页

作者： Lü Wenqi & DING Jiandong Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular science, fudan university, {2. 2.0433, China 1. Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular Science Fudan University 200433 Shanghai China

Free radical polymerization and living ion polymerization have been simulated via the dynamic Monte Carlo method with the bond-fluctuation model in this paper. The polymeriza-tion-related parameters such as conversion of monomers, degree of polymerization, average molecular weight and its distribution are obtained by statistics. The simulation outputs are con-sistent with the corresponding theoretical predictions. The scaling relationships of the coil size versus chain length are also confirmed at different volume fractions. Furthermore, the effect of diffusion on polymerization is revealed preliminarily in our simulation. Hence the simulation ap-proach has been proven to be feasible to investigate polymerization reactions with the advan-tages that configuration and diffusion of polymer chains can be examined together with polym-erization kinetics.

关键词： living ion polymerization free radical polymerization concentration effect configuration Monte Carlo simulation.

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