Studies on Phytoplankton Community Structure and its Responses to Upwelling in Southern Taiwan Strait

本论文通过大面调查、上升流过程跟踪和船基围隔等实验手段，利用光合色素的高效液相色谱分离分析方法，分别于2004年7-8月、2005年2-3月、7月、2006年7月及2008年6月，研究了我国台湾海峡南部浮游植物生物量与类群组成的时空变化及其对上升流的响应，取得如下主要结果： 浮游植物光合色素和类群组成的空间变动：夏季台湾海峡南部叶绿素a（Chlorophylla）的平均浓度为950.8ngL-1；最主要的特征光合色素为岩藻黄素（fucoxanthin），其平均浓度为211.1ngL-1；叶绿素b（Chlorophyllb）、玉米黄素（zeaxanthin）以及19’-己酰基氧化岩藻黄素（19...By mapping, revisiting process and mesocosm approaches, phytoplankton community structure and its responses to upwelling were studied in southern Taiwan Strait (21°N-24°N and 116°E-119.5°E) using photosynthetic pigments during the southwest (SW) monsoon (July-August, 2004; June, 2005; July, 2006 and June, 2008). At the meantime, we also carried out the phytoplankton community structure in northeas...学位：理学博士院系专业：海洋与环境学院环境科学与工程系_环境科学学号：B20043401

Study on Power-type Flow Electrochemical Energy Storage System

随着科技发展和社会进步，能源和环境问题也日趋严峻。发展清洁高效的能源利用形式成为我们必须面对的重大问题。液流电化学储能作为一种新型的储能方式以其长寿命、无污染、容量可调控等优点，有希望成为本世纪新型的绿色能源。但目前的液流电化学储能体系是以大规模蓄电为主要特征的，不适合需要大功率的应用场合。本论文基于薄液层储能的基本思路通过改变电极结构，优化电极活性物质的流动方式，设计了一种功率型液流电化学储能体系，既保持了液流蓄电体系高容量的特点，又具有薄液层超级电容器高功率的优势。1，采用电解液平行穿过多孔电极的流动方式，设计和组装了功率性液流储能单元电池，测试了电极活性物质浓度、电极活性物质流速、电极厚...With the development of science and technology, the problem of energy resources and environment is getting sterner day by day. It is an urgent demand to make use of the energy which is clean and efficient. As a new energy storage type, the flow energy storage system was investigated extensively because its advantages such as long life, pollution-free, adjustable capacity. It will be a kind of gree...学位：理学硕士院系专业：化学化工学院化学系_物理化学(含化学物理)学号：2005130189

Design and Implementation of Open Laboratory Management System

随着计算机和网络技术的不断发展和普及，为使信息技术更好地服务于自身的发展，各行各业都已逐渐开展信息化建设工作。高校实验室作为高校的重要组成部分，信息化建设更是必然趋势。本文在开放式实验教学成为热门教学改革方向的背景下，结合某大学的实验教学现状，以开放式实验室管理系统为研究课题，开展研究工作，旨在通过课题的研究，促进学校开放式实验教学的展开。 论文的研究工作包括以下几个方面：深入相关实验室管理部门进行调研，给出详细的系统需求报告，基于系统分析的成果，重点研究软件技术在实验室管理中的应用，并给出了详细的开放式实验室管理系统的设计和实现方案。方案提出，采用ASP.NET技术，结合SQLServer...With the popularization of Internet and the continuous development of computer technology, Information Technology plays an important role in modern society and Construction of Informatization is becoming the mainstream of modern various walks of life. In our country, the laboratory, as an important section of universities, also becomes the hot spot of information construction work in higher educat...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X200923042

柱形容器开口泄爆过程中压力发展特性的实验研究

在体积为0.025m~3的柱形容器中，采用底端中心点火方式，对4.1%的丙烷-空气、9.5%甲烷-空气预混气的顶端开口泄爆过程进行了实验研究。实验结果给出了不同泄爆面积和不同泄爆压力条件下容器的内压力发展历史。就不同泄爆条件对容器内爆炸发展产生的影响进行了讨论

A review on the studies of acid-volatile sulfide in aquatic sediments

水体沉积物中酸可挥发性硫化物 (AVS)是总硫含量中活性最高的部分 ,是沉积物中有毒重金属的重要结合形态 ,它的含量在很大程度上影响着沉积物重金属的生物有效性 ,从而作为沉积物中有毒重金属环境污染评价的一个重要指标 ;就十多年来水体沉积物中酸可挥发性硫化物 (AVS)的研究进行了综述。概述了 AVS的测定方法及其影响因素 ;探讨了水体沉积物中 AVS含量时空变化的规律 ;同时就目前“同时可提取重金属”(SEM)与 AVS摩尔浓度比值和水体沉积物重金属生物毒性关系的研究进行了概括和分析。In this article, the latest development on the study of acid-volatile sulfide in aquatic sediment is reviewed. Acid-volatile sulfide (AVS) is operationally defined as sulfide in sediment which is soluble in cold acid, and was reported as the most active part of the total sulfur in aquatic sediments and a key partitioning phase controlling the activities of divalent cationic heavy metals in sediment. It has been reported that the measurement procedures of AVS concentration are very important for AVS study, the weight of sample taken for analysis, nitrogen flow rate, acid strength and digestion time could all affected the accuracy of AVS concentration analysis. Some other more convenient measure methods have been proposed, however, owing to different study conditions, there is no standard procedure to determine the concentration of AVS in aquatic sediment. The concentration of AVS in aquatic sediment is related to E _h (the redox potential) of the sediment, and has spatial and seasonal variations in sediment, therefore, it is very important which stratum of sediment should be selected to measure the AVS concentration and to used to predict the heavy metal pollution of the sediment. AVS had been proposed as the primary normalization phase for the development of sediment quality criteria for certain cationic metals because it could complex some cationic metals and thereby influences the toxicity of these metals to benthic organisms and has the potential to be an indicator of toxicity in both marine and freshwater sediments. Some studies indicated that the ratio of molar concentration between simultaneously extracted metals(SEM) and AVS can provide important insight into the potential bio-availability of toxic divalent heavy metal. Sediments with [SEM]/[AVS] ratios1.0 were thought to be toxic to benthic organisms. However, some other studies reported that the ratios>1.0 were not enough to indicate the sediment with heavy metals pollution, the other partitioning phases could also play an important role in reducing heavy metal toxicity. Furthermore, different benthic organisms may have different reactions under the same [SEM]/[AVS] ratio. The difference between the molar concentrations of SEM and AVS ([SEM]-[AVS]) should be used instead of [SEM]/[AVS] ratio as a measure of metals availability for it can provide important insight into the extent of additional available binding capacity, the magnitude by which AVS binding has been exceeded. More studies are therefore needed to understand the relations between the ratio of [SEM]/[AVS], heavy metal concentration in interstitial water, heavy metals distribution among different partitioning phases as well as different heavy metal interactions.国家自然科学基金资助项目 (3 0 170 190 )~

水体沉积物中酸可挥发性硫化物(AVS) 研究进展

水体沉积物中酸可挥发性硫化物(AV S) 是总硫含量中活性最高的部分, 是沉积物中有毒重金属的重要结合形态, 它的含 量在很大程度上影响着沉积物重金属的生物有效性, 从而作为沉积物中有毒重金属环境污染评价的一个重要指标; 就十多年来 水体沉积物中酸可挥发性硫化物(AV S) 的研究进行了综述。概述了AV S 的测定方法及其影响因素; 探讨了水体沉积物中AV S 含量时空变化的规律; 同时就目前“同时可提取重金属”(SEM ) 与AV S 摩尔浓度比值和水体沉积物重金属生物毒性关系的研 究进行了概括和分析

The Physiological Response of Synsepalum dulcifcum Denill Leaves to NaCl Stress

为明确神秘果(Synsepalum dulcifcum Denill)的耐盐能力,研究其在NaCl胁迫下的适应机制并丰富果树的耐盐机理,通过盆栽试验法,以0、2‰、4‰、6‰、8‰NaCl溶液分别对幼苗进行胁迫处理,测定叶片叶绿素、渗透调节物质、抗氧化物酶、丙二醛含量及土壤实际盐度。结果表明:在NaCl胁迫下,神秘果叶片的叶绿素合成受到明显抑制;超氧化物歧化酶(SOD)和过氧化物酶(POD)的活性随浓度增加而显著升高,过氧化氢酶(CAT)活性则是先升后降,在4‰时达到最高;可溶性蛋白含量与处理浓度呈负相关;脯氨酸、可溶性糖含量和对照相比有显著增加,推测脯氨酸和可溶性糖在胁迫过程中起着重要的渗透调节作用。To clear the tolerance and adaptive mechanism of S. dulcifcum and to rich the theory about the salt tolerance mechanism of fruit trees. The potted plants were watered with 0, 2‰, 4‰, 6‰, 8‰ NaCl and the physiological characteristics including the changes about chlorophyll, soluble protein, soluble proline, soluble sugar,SOD, POD, CAT, MDA of NaCl stress in S. dulcifcum leaves were measured. The result showed that the chlorophyll synthesis was significantly restricted under NaCl stress. The activity of SOD or POD increased clearly with the NaCl concentration, and the CAT activity increased to a peak under 4‰ NaCl and then dropped. The content of soluble protein dropped under NaCl stress while that of proline, soluble sugar increased significantly. It was deduced that proline or soluble sugar working as osmotic potentials in cells played a key role in salt tolerance of S. dulcifcum.厦门市科技计划项目(No.3502Z20092023

组织文化氛围、心理资本与组织归属感关系的实证研究

文章以472个企业员工为被试样本,运用相关分析、偏相关分析、回归分析及路径分析等统计方法考察了组织文化氛围、心理资本与组织归属感等变量之间关系。结果发现:(1)组织文化氛围、心理资本和组织归属感在受教育程度和工作岗位层面存在显著差异;心理资本、组织归属感存在显著的性别和工龄差异;(2)组织文化氛围与心理资本及组织归属感存在显著相关性和因果性;(3)组织文化氛围与心理资本相互作用,共同影响组织归属感,且组织文化氛围对组织归属感影响程度大

Rapid determination of 1,2-propylene glycol and glycerol in refill fluids for electronic cigarettes by Raman spectroscopy

为实现电子烟烟液主要成分的简便快速检测,建立了同时测定电子烟烟液中1,2-丙二醇和丙三醇含量的拉曼光谱分析方法,利用该方法测定了17个电子烟烟液; 样品,并与气质联用法进行了结果比较。结果表明:①1,2-丙二醇和丙三醇分别在0.125~0.956和0.106~1.120; g/mL时,以522和671 cm~(-1)特征信号峰强度绘制的标准工作曲线线性关系良好(R~2>; 0.999),单样本和独立样本t检验结果证实方法的准确性较高。②17个电子烟烟液样品中,1,2-丙二醇和丙三醇的含量分别为0.533~0.766; 和0.182~0.476; g/mL。该方法与气质联用法检测结果的配对样本t检验结果表明,在95%置信概率下,两种方法的定量结果一致。该方法不需进行样品前处理,更适用于批量; 电子烟烟液中1,2-丙二醇和丙三醇的快速定量分析。A simple and rapid Raman spectroscopy method for simultaneous; determination of 1,2-propylene glycol and glycerol in refill fluids for; electronic cigarettes was developed. Samples of 17 refill fluids were; analyzed by a portable Raman spectrometer,and the data were compared; with those determined by GC-MS. The results showed that: 1) The standard; curves of 1,2-propylene glycol and glycerol determined at the Raman; intensity of 522 and 671 cm~(-1) possessed good correlation coefficients; (R~2 above 0.999) in the content range of 0.125-0.956 and 0.106-1.120; g/mL,respectively. The results of one sample t-test and independent; sample t-test indicated that the Raman method was accurate. 2) The; contents of 1,2-propylene glycol and glycerol in 17 refill fluids were; in the range of 0.533-0.766 and 0.182-0.476 g/mL, respectively. The; result of paired sample t-test showed that the data determined by Raman; spectroscopy were consistent with those obtained by GC-MS at a; confidence level of 95%. Without sample pretreatment, Raman spectroscopy; method is simple to operate and more suitable for the rapid quantitative; determination of 1,2-propylene glycol and glycerol in batches of refill; fluids for electronic cigarettes.浙江中烟工业有限责任公司科技项