A modeling study of hypoxia in the bottom layers off the Changjiang Estuary in summer

近几十年来，受人类活动影响，大量有机污染物和营养物质经河流排放到长江口及其近岸海域，造成水体富营养化日益严重，致使长江口外近岸底层水体缺氧现象也呈不断上升趋势。长江口底层水体缺氧的形成是个复杂的过程，是物理过程和生化过程综合作用的结果。物理过程主要控制着溶解氧的水平和垂直输运，生化过程控制着溶解氧的产生和消耗。 近年来已有许多学者研究长江口水体缺氧现象，但目前针对该区域缺氧的研究主要局限于定性的观测分析。为了更好研究长江口水体缺氧的形成机制，本文应用一个三维水动力¬-生态耦合模式，对长江口的溶解氧进行分析研究。模型验证结果显示，模型能够较好模拟长江口流场，温度，盐度等水动力要素的特征...In recent decades, the eutrophication of water body driven by excess nutrient and organic pollutants loads from lands due to human activities is increasing year by year, which leads to an enhancement of hypoxic zone. The formation of hypoxia adjacent to the Yangtze Estuary is a complex process, which is the result of both physical and biochemical processes. Physical process controls the level and ...学位：理学硕士院系专业：海洋与地球学院_海洋生物学学号：2232013115143

Zinc oxide nanoparticles and SH-SY5Y cell line

The Arctic and sub-arctic regions are impacted by the growth of the global nanotechnology industry. Nanomaterials have unique chemical and physical properties that may lead to toxicological effects that interfere with normal cellular metabolism. Zinc oxide nanoparticles (ZnO NPs) are now very common and widely used in daily life. In industry, ZnO NPs are used to protect different materials from damage caused by UV exposure. The scientific literature suggests that ZnO NPs can have negative impacts on both living organisms and plants. However, there is a paucity of research on the mechanisms by which ZnO NPs may affect the neuronal cells. This study investigates how ZnO NPs interact with the neuroblastoma cell line SH-SY5Y. Using transmission electron microscopy, we observed that the ZnO NPs form 36 nm particles on average, and increase the level of vascular endothelial growth factor (VEGF) in extracellular fluid, as measured by an enzyme-linked immunosorbent assay (ELISA). Moreover, ZnO NPs, in presence of tumor neucrosis factor- α (TNF-α), can also decrease the level of extracellular VEGF compared with TNF-a treatment alone. These findings suggest the basis for more studies on understanding the mechanism by which ZnO NPs impact cytokine signaling. Another direction is using ELISA technology to observe the interactions of NPs with different cell types such as neuronal stem cells

The synthesis of caffeic acid derivatives and their activated mechanisms on mushroom tyrosinase

酪氨酸酶广泛存在于各生物体内，其产物多巴醌能与氨基酸或者蛋白质聚合形成黑色素，是黑色素合成的关键酶。黑色素合成不足会引起白癜风等疾病及白发。因此，酪氨酸酶抑制剂和激活剂在制药及化妆品行业有重要开发价值。 咖啡酸属于多羟基苯乙烯酸类化合物，具有多种生物活性，且对蘑菇酪氨酸酶的单酚酶和二酚酶活力具有激活作用，而吗啉类衍生物含有仲胺基团，具有仲胺基团的所有典型反应特征。本文以咖啡酸为母核与吗啉衍生物(4-(2-羟乙基)吗啉、4-(3-羟丙基)吗啉、2-氨乙基吗啉及N-氨丙基吗啉)反应，合成了4种咖啡酸衍生物：咖啡酸-4-2-羟乙基吗啉酯(Z-1)，咖啡酸-4-3-羟丙基吗啉酯(Z-2)，咖啡酸-2...Tyrosinase is the key enzyme for the synthesis of melanin and widely exists in various organisms. The dopaquinone which product of enzyme, can aggregate melanin with amino acids or proteins. And melanin synthesis insufficient will cause diseases such as vitiligo or white hair. Therefore, control of tyrosinase activity research in pharmaceutical industry and cosmetics industry has great development...学位：理学硕士院系专业：生命科学学院_生物化学与分子生物学学号：2162014115258

对我国中小企业板上市公司独立董事和监事会的实证分析

深交所中小企业板自2004年5月17日获准设立至今,市场规模发展迅速,尤其是恢复IPO以来,发行上市速度明显加快,有力地支持了中小企业快速发展。直接融资渠道的畅通,使中小企业成为了公众公司,其公司治理问题引起人们的重视和关注。本文首先实证分析一下中小企业板上市公司独立董事和监事会的问题,再相应提出一些建议

An Empirical Research on the Relation between Investor Sentiment and Stock Market Bubble——Based on Chinese A-Share Market

随着我国股票市场的快速发展，股市在资本市场中扮演着越来越重要的角色，它的稳定健康发展关系到资本市场乃至国民经济的平稳可持续发展。虽然我国股票市场的深度和广度得到了极大拓展，但是市场仍然存在许多缺陷，股票指数起伏跌宕，经常出现宽幅震荡等现象，给整个经济系统造成了许多负面的冲击，给社会经济带来了不稳定的因素。尤其是我国股市是以中小投资者为主，“追涨杀跌”、“盲目跟风”等非理性特征非常明显，这些投资者的非理性导致股票价格偏离其基本面，滋生股市泡沫，从而会给社会经济造成很大的负面影响。因此，本文结合中国的实际情况，以中国股票市场为背景，尝试从投资者情绪角度来研究股市泡沫，探究投资者情绪与股市泡沫的关系...With the rapid development of stock market, the stock market plays an increasingly important role in the capital market, whose stable and healthy development is related with the stable sustainable development of capital market and national economy. Although the depth and breadth of our country’s stock market has been greatly expanded, the market still has many shortcomings, such as stock index ups...学位：管理学硕士院系专业：管理学院财务学系_财务学学号：1762007115178

日本寿险经营失败对我国寿险资金入市的警示

寿险产品一般具有储蓄和保障两重性,契约时间大多长达10年以上,为了与银行储蓄产品竞争,往往采取较高的利率作为其相对缺乏流动性的补偿,故而极易受商业周期波动的影响,导致预定年复利率高于市场均衡利率而产生利差损。本文通过对中日利差损的成因分析与比较,结合中国寿险公司面临的困境及我国资本市场的实际情况,提出寿险资金入市的若干警示

Study on the Impacts of the New Accounting Rules Implemented within the Life Insurance Industry

随着《企业会计准则解释第2号》和《保险合同相关会计处理规定》的出台，会计新准则于2009年在中国保险业得以落实。此次保险会计新准则主要涉及保费收入确认标准和保险合同准备金计量两个方面的内容，即保费收入引入分拆和重大保险风险测试，采用新的基于最佳估计原则下的准备金评估标准。 通过此次保险会计新准则实施，保险会计真正实现了与国际财务报告准则的实质性趋同，有利于消除境内外报表差异，有利于更加公允、客观地反映保险公司的经营业绩和财务状况，有利于促进保险行业结构调整，回归保障主业，提升行业核心竞争力和防范风险能力，对于推动保险业转变发展方式，促进保险业科学发展将产生深远影响。 保险会计新准则对寿险业...Along with the launch of the “No.2 Interpretation of Accounting Standards for Enterprises” and “Provision on Relevant Accounting Treatment for Insurance Contracts”, the new accounting rules were finally implemented within the insurance industry in 2009. Under the new accounting rules, insurance-related risks under a mixed insurance and non-insurance policy will be recorded separately from non-insu...学位：会计硕士院系专业：厦门大学与厦门国家会计学院会计硕士专业学位联合教育中心（MPACC）_会计硕士(MPACC)学号：X200615710

试论经济资本配置管理对银行业务发展的影响

经济资本管理体系是当今国际银行业最为先进的风险控制体系,经济资本已经成为银行风险和价值管理的核心。本文剖析了经济资本的内涵与银行经济资本管理体系的特点,并结合经济资本配置管理在我国商业银行的实践,考察经济资本配置管理对银行业务发展的意义和影响

Research On the Investment Efficiency of Social Security Fund

社会保障是通过企业代缴、个人投保、国家资助和强制储蓄的办法筹集资金，包括由地方政府管理的基本社会保障基金和由中央集中管理的全国社会保障基金（简称“社保基金”）。本文侧重研究的是后者，即社保基金自2000建立至今的投资运营、投资回报及风险控制的水平。在短短八年的时间内，社保基金从无到有，经历了经济平稳期、快速膨胀期以及快速收缩期，为研究提供了丰富的经济背景。 首先，本文从投资效率出发，对其进行定性的概念界定和定量的度量列举，并从投入、运营以及产出这三个过程对其影响因素展开铺成性介绍，指出投资效率包含投入与产出的对比关系以及风险与收益的均衡关系这两个层面。 其次，进入到社保基金的投资效率基本理...Social Security is funding through corporations, individuals, national funding and mandatory saving. It includes two parts. One is basic Social Security Fund which is managed by local government. The other is national Social Security Fund which is managed by central government. (Here after referred as “Special Security Fund”). This thesis focuses on the latter, that is, the operation, investment r...学位：经济学硕士院系专业：经济学院金融系_保险学学号：1562006115105