Studies on Seasonal Variation of Chlorophyll a and Primary Production in the in the Taiwan Strait and its Adjacent Sea Area

分别于2006年7~8月(夏季)、2007年1~2月(冬季)、2007年4~5月(春季)、2007年10~12月(秋季)在台湾海峡及其邻近海域开展了连续四个季节的现场叶绿素a(Chla)和初级生产力(PP)的时空分布格局以及Chla和PP的粒径结构的调查研究。同时从物理过程和营养输送方面讨论了台湾海峡及其邻近海域Chla和PP的季节变化特征及其调控因素，取得如下主要结果： 1、台湾海峡及其邻近海域春季、夏季、秋季、冬季Chla含量的平均值分别为0.74mg/m3，0.64mg/m3，1.04mg/m3，1.11mg/m3。不同海域Chla呈不同的季节变化模式，北部海域呈春季>夏季>秋季>冬季...Four cruises, which were in the Taiwan Strait and its adjacent sea area (TSA) in July~August(summer), 2006, January~February(winter), 2007 and in April~May (spring), 2007, October~ December (autumn), 2007, respectively, were carried out to study the temporal and spatial distribution patterns of chlorophyll a concentration and primary productivity, and the size-fractioned phytoplankton and primary ...学位：理学硕士院系专业：海洋与环境学院环境科学与工程系_环境科学学号：2262006115234

Electrochemiluminescence Imaging Hydrogen Evolution Reaction on Single Platinum Nanoparticles Using a Bipolar Nanoelectrode Array

本文制备了嵌于多孔阳极氧化铝（AAO）膜中直径为200 nm,间距为450 nm的高密度（5.7 × 108 cm-2）的金纳米电极阵列,纳米电极分布规则,尺寸高度均一。我们将该金纳米电极阵列作为双极电极阵列,可将电极一侧的电化学法拉第信号在另一侧电极上转化成电致化学发光（ECL）信号,从而实现对单个铂纳米颗粒上氢气析出反应（HER）进行亚微米空间分辨率的电化学成像。本文介绍的方法为高空间分辨率成像电催化材料、能源材料以及细胞过程的局部电化学活性提供了一个良好的平台。A high-density (5.7 × 108 cm-2) nanoelectrode array with the electrode diameter of 200 nm and the interelectrode distance of 450 nm were fabricated. The nanoelectrode array consisted of gold nanowires embedded in a porous anodic aluminum oxide (AAO) matrix, having regular nanoelectrode distribution and highly uniform nanoelectrode size. The gold nanoelectrode array was used as a closed bipolar nanoelectrode array combined with electrochemiluminescence (ECL) method to map the electrocatalytic activity of platinum nanoparticles toward hydrogen evolution reaction (HER) by modifying the catalysts on single nanoelectrodes. Results show that HER on single bipolar nanoelectrodes could be imaged with the sub-micrometer spatial resolution. The present approach offers a platform to image local electrochemical activity of electrocatalytic materials, energy materials and cellular processes with high spatial resolution.通讯作者:夏兴华E-mail:[email protected]:Xing-HuaXiaE-mail:[email protected]生命分析化学国家重点实验室,南京大学化学化工学院,江苏 南京State Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering,Nanjing University, Nanjing 210023, Jiangsu Chin

沿海产盐区与非产盐区18～45岁人群碘营养状况及甲状腺功能水平研究

目的掌握厦门市沿海产盐区与非产盐区居民盐碘、18～45岁人群碘营养和甲状腺功能水平状况,为采取针对性的防治措施提供依据。方法选择沿海产盐区翔安区和非产盐区集美区为调查点,调查居民合格碘盐食用率、18～45岁育龄期妇女和男性尿碘水平、甲状腺激素水平和海带、紫菜的摄入习惯。结果产盐区和非产盐区盐碘中位数均为27.21 mg/kg,合格碘盐食用率分别为95.33%和96.33%;18～45岁男性尿碘中位数分别为206.55μg/L和232.95μg/L,尿碘<100μg/L的比例分别为20.97%和10%;18～45岁育龄期妇女尿碘中位数分别为176.95μg/L和227.70μg/L,尿碘<100μg/L的比例分别为21.67%和25%;产盐区和非产盐区18～45岁男性和育龄期妇女的甲状腺激素TSH、Tg、FT3、FT4、TPOAb、TT3、TT4中位数均在正常值范围内;产盐区18～45岁男性的甲状腺功能亢进阳性率为3.4%、育龄期妇女的甲状腺功能减退和亚临床甲状腺减退症的阳性率均为1.67%,而非产盐区均为0。产盐区和非产盐区18～45岁男性和育龄期妇女中均有一定比例易患甲状腺免疫性疾病的人群。每月食用海带、紫菜的次数≥4次、1～3次和<1次的人尿碘组间比较无统计学差异。结论产盐区和非产盐区18～45岁男性和育龄期妇女碘营养总体处于适宜状态,应坚持食盐加碘措施,对育龄期妇女在婚前体检时开展常规碘营养水平和甲状腺功能检测

Combustion Synthesis and Electrochemical Properties of the Small Hydrofullerene C50H10

通讯作者地址: Xie, SY (通讯作者),Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China 2. Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, Xiamen 361005, Peoples R China 3. Xiamen Univ, Sch Life Sci, Xiamen 361005, Peoples R China 电子邮件地址: [email protected]; [email protected] hydrofullerene C50H10 is synthesized by low-pressure benzeneoxygen diffusion combustion. The structure of C50H10 is identified through NMR, mass spectrometry, and IR and Raman spectroscopy as a D5h symmetric closed-cage molecule with five pairs of fused pentagons stabilized by ten hydrogen atoms. UV/Vis and fluorescence spectrometric analyses disclose its optical properties as comparable with those of its chloride cousin (C50Cl10). Cyclic and square-wave voltammograms reveal that the first reduction potential of C50H10 is more negative than that of C50Cl10 as well as C60, with implications for the utilization of C50H10 as a promising electron acceptor for photovoltaic applications.973 projects 2011CB935901 NSFC 21031004 21021061 2077310

人口增长与渔业发展对武汉东湖水质的影响

人口增长与渔业发展对武汉东湖水质的影响蔡庆华，刘建康（中国科学院水生生物研究所，武汉４３００７２）ＥＦＦＥＣＴＯＦＨＵＭＡＮＰＯＰＵＬＡＴＩＯＮＧＲＯＷＴＨＡＮＤＦＩＳＨＥＲＹＤＥＶＥＬＯＰＭＥＮＴＯＮＷＡＴＥＲＱＵＡＬＩＴＹＯＦＬＡＫＥＤＯＮＧＨＵ..

微生物群落对水体中有机碎屑的分解与转化作用

&lt;正&gt; 1.微生物群落对有机碎屑的分解水生态系统是一个具有物质循环、能量流动的复杂系统。它首先通过绿色植物的光合作用,在酶的作用下,吸收太阳能和营养元素,建造自己的有机体,形成水体初级生产力。初级生产的一部分物质和能量,由本身的呼吸作用所消耗;一部分输出,通过动物的牧食作用,形成次级生产力;剩余的部分则被微生物利用,形成有机碎屑进入水生态系统。另外

东湖异养细菌群落的分类结构和聚类分析

对东湖异养细菌群落结构采用系统分类和微机聚类分析方法作了比较研究。169株由东湖Ⅰ、Ⅱ、Ⅲ站水体中分离的异养细菌分别隶属于30个细菌属。其中以芽孢杆菌属居于明显优势,其次是微球菌属。在不同水域或水层,细菌的分布表现有一定的差别,但各站间多样性指数值没有明显的差异。基于113项生物学特性检测结果,采用lBM PC/XT微机聚类分析后计算各站细菌的多样性指数发现:Ⅰ站明显高于Ⅱ、Ⅲ两站,43项检测系统所得结果与此表现了一致的趋势。这与东湖各站水环境的理化分析参数是比较吻合的。作者对以上结果作了讨论