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ELECTROCHEMICAL COPOLYMERIZATION OF ANILINE AND AZURE B

Chinese Journal of Polymer Science 2001年第5期19卷 483-492页

作者： Dan Shan Shao-lin Mu Bing-wei Mao Yong-fang Li Department of Chemistry School of Science, Yangzhou university Yangzhou 225002, china State key laboratory of Physical Chemistry of Solid Surface, xiamen university xiamen 361005 china Center for Molecular Science. Institute of Chemistry Chinese Academy of sciences, Beijing 100080 china Yangzhou Univ Sch Sci Dept Chem Yangzhou 225002 Peoples R China xiamen Univ State Key Lab Phys Chem Solid Surface Xiamen 361005 Peoples R China Chinese Acad Sci Inst Chem Ctr Mol Sci Beijing 100080 Peoples R China

The electrochemical copolymerization of aniline and N,N,N'-trimethylthionin (azure B) in aqueous solutions has been carried out using the potential sweep method. The optimum conditions for the coelectrodeposition are that the pH value and the temperature of the electrolytic solution are controlled at 5.57 and 30 degreesC, respectively, and the scan potential range is set between -0.25 and 1.10 V (versus SCE). The copolymerization rate of aniline and azure B is about 3 times larger than that of aniline in the absence of azure B. The copolymerization of aniline and azure B was verified from the results of visible spectra during electrolysis, FTIR spectra and the atomic force microscopy (AFM) images of the polymers. The in situ visible spectrum for the electrolysis of the solution containing aniline and azure B is different from that of the respective aniline and azure B. The FTIR spectrum of the copolymer is not a superposition of that of polyaniline and poly(azure B). The AFM image of the copolymer is different from those of polyaniline and poly(azure B) and is not a mixture of individual polymers. The conductivity of the copolymer synthesized at pH 5.57 is four orders of magnitude higher than that of polyaniline synthesized under the same conditions, but in the absence of azure B. The electrochemical properties of the copolymer are mainly attributed to polyaniline, but the copolymer has a better electrochemical reversibility and a much faster charge transfer than those of polyaniline.

关键词： aniline azure B electrochemical copolymerization characterization of copolymer electrochemical property

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Spatiotemporal expression of Pax genes in amphioxus: Insights into Pax-related organogenesis and evolution

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Science china(Life sciences) 2010年第8期53卷 1031-1040页

作者： CHEN Lu1, ZHANG QiuJing1,2, WANG Wei1 & WANG YiQuan1 1key laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life sciences, xiamen university, xiamen 361005, china 2College of Life sciences, Fujian Normal university, Fuzhou 350108, china 1. key laboratory of the Ministry of Education for Coastal and Wetland Ecosystems School of Life Sciences Xiamen University Xiamen 361005 China2. College of Life Sciences Fujian Normal University Fuzhou 350108 China

The expression of four AmphiPax genes in 16 developmental stages and different organs in amphioxus (Branchiostoma belcheri) was investigated, finding those genes expressed throughout amphioxus life with temporal-specific (especially during embryogenesis and metamorphosis) and spatial-specific patterns. This study suggests that duplicated Pax genes in vertebrates might maintain most of their ancestral functions and also expand their expression patterns after the divergence of protochordates and vertebrates.

关键词： Pax genes evolution amphioxus spatiotemporal gene expression development

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Phylogenetic analysis of bacterial community in deep-sea sediment from the western Pacific “warm pool”

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Acta Oceanologica Sinica 2005年第5期 131-142页

作者： ZHAO Jing1, ZENG Runying2 *1. School of Life sciences, xiamen university, xiamen 361005, china2. key laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, State Oceanic Administration, xiamen 361005, china

A depth profile of bacterial community structure in one deep-sea sediment core of the western Pacific "warm pool" (WP) was investigated and compared with that in a sediment sample from the eastern Pacific (EP) by phylogenetic analysis of 16S rDNA fragments. Five bacterial 16S rDNA clone libraries were constructed, and 133 clones with different restriction fragment length polymorphism (RFLP) patterns were sequenced. A phylogenetic analysis of these sequences revealed that the bacterial diversity in a sample from the WP was more abundant than that in the EP sample. The bacterial population in the sediment core of WP was composed of eight major lineages of the domain bacteria. Among them the γ-Proteobacteria was the predominant and most diverse group in each section of WP sediment core, followed by the α-Proteobacteria. The genus Colwellia belonging to γ-Proteobacteria was predominant in this sample. The shift of bacterial communities among different sections of the WP sediment core was δ-, ε-Proteobacteria, and Cytopahga-Flexibacteria-Bacteroides (CFB) group. The ratios between them in the bacterial communities all showed inversely proportional to the depth of sediment. The sequences related to sulphate reducing bacteria (SRB) were detected in every section. The bacterial community structure in this sediment core might be related to the environmental characteristics of the surface seawater of the western Pacific WP.

关键词： western Pacific "warm pool" deep-sea sediment bacterial community

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Current status of bacteriological parameters and DOC/POC in xiamen coastal waters

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Acta Oceanologica Sinica 2003年第3期22卷 443-451页

作者： Khalid Maskaoui, Tianling Zheng , Huasheng Hong Zhiming Yu, Zhong Hu, Yun Tian, Lizhe Cai School of Life sciences, xiamen university, xiamen 361005, chinakey laboratory of Marine Environmental Science of SED, xiamen 361005, chinakey laboratory of Marine Ecology & Environmental Science, Chinese Academy of sciences, Qingdao 266071, china + Corresponding author:86-592-2183217,Fax:86-592-2181510. E-mail: wshwzh @ jingxian. xmu. edu. cn xiamen Univ Sch Life Sci Xiamen 361005 Peoples R China SED Key Lab Martine Environm Sci Xiamen 361005 Peoples R China Chinese Acad Sci Key Lab Marine Ecol & Environm Sci Qingdao 266071 Peoples R China

The surface and bottom waters samples were collected from six locations in xiamen western sea. The quantified estimation of bacterial production (H-3-thymidine method) and observation of bacterial heterotrophic activity (C-14-glucose method) have been made in order to have a better understanding of the role of marine bacteria and their activities. The results showed that the mean value of bacterial heterotrophic activity was 9 X 10(8) cells/(L. h) in the surface waters and 2.6 X 10(8) cells/(L. h) in the bottom waters. The mean value of bacterial production was 38 X 108 cells/( L. h) in the surface waters and 7.1 X 10(8) cells/(L. h) in the bottom waters. The relationship between bacterial production, heterotrophic activity, PCC and DOC measured during this survey were discussed. The good understanding of the relationship between bacteria activity and total coliform was addressed.

关键词： bacteriological parameters POC DOC xiamen western sea

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Phylogenetic analysis of aerobic anoxygenic phototrophic bacteria and their relatives based on farnesyl pyrophosphate synthase gene

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Acta Oceanologica Sinica 2010年第5期29卷 82-89页

作者： FENG Fuying JIAO Nianzhi DU Hailian ZENG Yonghui State key laboratory of Marine Environmental Science Xiamen University Xiamen 361005 China College of Life sciences Innermongolia Agriculture University Huhhot 010018 China

The study aims to reveal phylogenetic and evolutionary relationship between aerobic anoxygenic phototrophic bacteria（AAnPB） and their relatives,anaerobic anoxygenic phototrophic bacteria（AnAnPB） and nonphototrophic bacteria（NPB,which had high homology of 16S rDNA gene with AAnPB and fell into the same genus）,and validate reliability and usefulness of farnesyl pyrophosphate synthase（FPPS） gene for the phylogenetic *** genes with our modified primers and 16S rDNA genes with general primers,were amplified and sequenced or retrieved from GenBank *** contrast to 16S rDNA gene phylogenetic tree,AAnPB were grouped into two clusters and one branch alone with no intermingling with NPB and AnAnPB in the tree constructed on *** branch of AAnPB,in both trees,was located closer to outgroup species than AnAnPB,which implicated that some AAnPB would be diverged earlier in FPPS evolutionary history than AnAnPB and *** AAnPB and NPB were closer located in both trees and this suggested that they were the closer relatives than *** codon usage in FPPS with phylogenetic analysis,the results indicates that FPPS gene and 16S rRNA gene have similar evolutionary pattern but the former seems to be more reliable and useful in determining the phylogenic and evolutionary relationship between AAnPB and their *** is the first attempt to use a molecular marker beside 16S rRNA gene for studying the phylogeny of AAnPB,and the study may also be helpful in understanding the evolutionary relationship among phototrophic microbes and the trends of photosynthetic genes transfer.

关键词： aerobic anoxygenic phototrophic bacteria farnesyl pyrophosphate synthase phylogeny anaerobic anoxygenic phototrophic bacteria nonphototrophic bacteria

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Multinuclear Nuclear Magnetic Resonance Studies of 〔VS_4 (CuPPh_3)_5 (CuCl) Br_2〕

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Chinese Journal of Structural Chemistry 1998年第2期17卷 89-93页

作者： CHEN Zhong YE Jian-Liang CAI Shu-Hui(The Research laboratory of SEDC of analytical Science for Material and Life Chemistry(Department of Chemistry, xiamen university, xiamen 361005)(State key laboratory of Structural Chemistry, Fuzhou 350002)ZHENG Fa-Ku Fujian Inst. Res. Struct. of Matter Chinese Academy of Sciences State Key Lab. of Struct. Chemistry Fuzhou 350002 China

The structure, spectroscopic properties and chemical stability of [VS4-(CuPPh3)3 (CuCl)Br2] in CDCl3 solution have been studied by multinuclear NMR tech-nique. Two peaks with relative intensity of 1: 4 are found in the31P-{1H} *** 13C-{1H} and 1H NMR peaks have the same integral intensity ratio. These com-plemented the results of 31P-{1H} NMR. The experimental results demonstrates that the PPh3 ligand bound to Cu(6) is not equivalent with the four PPh3 ligands bound toCu(2) ~Cu (5 )- It affords an evidence that the title compound in the solution keepssimilar structure to solid state.

关键词： nuclear magnetic resonance V-Cu-S cluster transition metal complex

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The microbialremediation of Polycyclic Aromatic Hydrocarbons(PAHs)Pollution in xiamen WesternHarbor

The microbialremediation of Polycyclic Aromatic Hydrocarbons...

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第八届全国海岸河口学术研讨会暨海岸河口理事会议

作者： Zheng Tianling Yun Tian Khalid Maskaoui (School of life sciences, xiamen university, xiamen, 361005, china) (key laboratory of SED, xiamen university, xiamen, 361005, china)

An investigation of the pollution level of polycyclic aromatic hydrocarbons (PAHs) and the distribution characteristics of PAHs-degrading bacteria in xiamen Western harbor was conducted. High molecular weight (more than four rings) PAHs-degrading bacteria were isolated and the mechanism of biodegradation was studied. The result showed that the concentration and composition of PAHs in the surface water were unstable. The pollution level of PAHs in April and October were higher than that in July. PAHs in the surface water were mainly dominated by naphthalene (2 rings) in April, acenaphthene (3 rings) in July and chrysene (5 rings) in the October. PAHs in sediments were mainly dominated by high molecular weight PAH components (4-6 rings). F luoranthenn a nd p yrene w ere t he m ost d ominant a t different s easons and stations. The change of total PAHs concentration was insignificant in different seasons, but the level of high molecular weight PAH compounds showed and increasing tendency. PAH-degrading bacteria were abundant in both of surface water and sediments of xiamen Western harbor. The numbers of PAH-degrading bacteria were more than 10eCFU/mL in surface water and 104CFU/g in sediments during summer season. However, during the autumn, numbers of PAH-degrading were more than 102CFU/mL in surface water and 103CFU/g in *** enrichment of three pure cultures (PYSP1, PYSP6, PYSP 22) has been done successfully by using a spray plate method with pyrene as the sole carbon source. Among them, the pure culture PYSP22 was able to utilize pyrene, phenanthrene and fluoranthene separately as the sole carbon and energy source. Within about 3 weeks, the degrading rate of pyrene, phenanthrene and fluoranthene was 70.3%, 85.5% and 85.4% respectively. In addition, the pure culture PYSP22 was able to utilize both of pyrene, phenanthrene and fluoranthene at the same time, 3 weeks later, the degrading rate of pyrene, phenanthrene and fluoranthene in the mixture was 80.6%, 90

关键词： Polycyclic Aromatic Hydrocarbons microbioremediation xiamen Western Sea.

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Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel

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Acta Oceanologica Sinica 2009年第6期28卷 24-29页

作者： HONG Youwei YUAN Dongxing LIAO Dan LIU Baomin State key laboratory of Marine Environmental Science Xiamen University Xiamen 361005 China Institute of Urban Environment Chinese Academy of Sciences Xiamen 361021 China College of Environment and Plant Protection Hainan University Danzhou 71737 China

The purpose of this study was to investigate the accumulation behavior of two typical PAHs, phenanthrene （PHE） and fluoranthene （FLA）, uptaken by the mangrove Kandelia candel in various treated sandy soils. The experiment lasted for three months. Soil and plant samples were collected after 3, 6, 9 and 13 weeks of the incubation and the levels of PAHs were analyzed using a GC/MS （HP6890-5975B）. The results showed that the root accumulations of PHE and FLA were elevated with the increase of the PAH concentrations in the soil. With prolonged exposure time, PHE and FLA concentrations of the roots increased significantly in comparison with the control. PHE and FLA concentrations of root after 13 weeks of treatment ranged from 0.28 to 4.36 #g.g-1 and 0.79 to 35.76 pg.g 1 respectively. The calculated mean values of the root concentration factors were 0.58 for PHE and 0.71 for FLA. This indicated that root accumulation of FLA was greater than PHE, which would result from the higher octanol-water partition coefficient （Kow） of FLA. These results underline the ability of mangroves to remove PAHs from contaminated marine substrates and hence their potential use in bioremediation and the removal of PAHs from the marine food chain.

关键词： accumulation uptake phenanthrene fluoranthene mangrove ecosystem Kandelia candel

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海底爆破辐射声场的理论及数值研究

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物理学报 2008年第7期57卷 4251-4257页

作者：汤立国许肖梅刘胜兴厦门大学海洋学系

对固体基底浅海中声波传播的色散特性作了数值模拟与分析.利用液体及固体中声传播理论导出了固体基底内爆破源在浅海中所激发声场的解析解,在此基础上,通过数值计算,得出了浅海中不同空间点处的瞬态声压时域波形,并在瞬态声压时域波形... 详细信息

对固体基底浅海中声波传播的色散特性作了数值模拟与分析.利用液体及固体中声传播理论导出了固体基底内爆破源在浅海中所激发声场的解析解,在此基础上,通过数值计算,得出了浅海中不同空间点处的瞬态声压时域波形,并在瞬态声压时域波形的平滑伪Wigner-Ville分布基础上,对固体基底内爆破源在浅海中所激发瞬态声场的特性作了详细分析.

关键词：海底爆破声场色散瞬态声压

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Evolution of a coastal upwelling event during summer 2004 in the southern Taiwan Strait

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Acta Oceanologica Sinica 2011年第1期30卷 1-6页

作者： ZHANG Caiyun HONG Huasheng HU Chuanmin SHANG Shaoling State key laboratory for Marine Environmental Science College of Oceanography and Environmental Sciences Xiamen University Xiamen 361005 China College of Marine Science University of South Florida St. Petersburg USA

A coastal upwelling event in the southern Taiwan Strait （STWS） was investigated using intensive cruise surveys （four repeated transects in a month） and satellite data in July and early August 2004. The extensive upwelling-associated surface cold water was first observed in early July （-2.0×10a km2） along the STWS coast. Then, the cold surface water reduced in size by -50% with decreased chlorophyll concentrations after 15 days, indicating the weakening of the upwelling event. At the end of July, the cold surface water disappeared. The temporal variations of the surface cold water and the 3-D hydrography around Dongshan Island are thought to be mainly attributed to the weakened upwelling-favorable southwestern wind, the asymmetric spatial structure of the wind field and the intrusion of warm water from the northern South china Sea.

关键词： coastal upwelling evolution SST ocean color remote sensing Taiwan Strait

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