The Study of Anti-HBV With Nicotine Treated Dendritic Cells

乙型肝炎病毒（HepatitisBVirus，HBV）感染是一个全球性的公共健康问题，其慢性感染引起的病毒性肝炎是严重威胁人类健康的常见病和多发病。目前对HBV的慢性感染尚缺乏非常有效的治疗手段。临床上具有持续性疗效的方法是利用IFN-α进行系统治疗，可在40％患者体内取得抑制HBV复制的效果，但仅有5%～10％接受治疗的患者HBsAg转阴。此外，利用核酸类似物如拉米夫定(lamivudine)进行治疗可以快速降低血清HBVDNA水平并使得症状好转，但短期治疗会导致肝病迅速复发，长期治疗易形成抗性病毒变异株。近来对HBV感染的过继性免疫治疗研究日益增多，过继免疫治疗普遍采用体外抗原负载树突状细...More than 2 billion people alive today have been infected with hepatitis B virus (HBV) at some time in their life worldwide, and of these, about 350 million remain infected. Although many cases of chronic HBV infection can resolve spontaneously, some still progress to cirrhosis and hepatocellular carcinoma, which kill 1 million people every year. Thus, HBV infection had become a major public healt...学位：理学硕士院系专业：医学院药学系_微生物学学号：2452008115342

我国地下经济规模核算及变化趋势

地下经济作为一种"影子经济"已经成为我国国民经济的一部分,成为影响国民经济的重要因素。其规模的扩大不仅破坏了国民经济核算的准确性,冲击着现有的经济理论,更为重要的是,给宏观经济调控带来种种困难和障碍。因此,估算我国的地下经济规模,分析其发展变化的趋势,具有重要的现实意义

A Statistical Study on Educational Inequality in China

本文在阐明教育不平等的涵义和我国教育不平等的主要表现形式的基础上，提出了一套适合我国国情的教育不平等评价指标体系，并利用该体系对我国教育的现状进行了实证研究。最后，对影响我国教育不平等的主要因素进行了定性分析和定量分析，提出了改善教育不平等的对策建议。 根据论文的内容，全文共分为六个部分： 第一章是导言，主要介绍研究背景和研究目的、研究的主要内容与结构安排，以及本研究的创新之处。 第二章阐明教育不平等的涵义，分析我国教育不平等的主要表现形式，并对教育方面评价指标体系的研究现状进行了评述，在此基础上提出一套适合我国现状的教育不平等评价指标体系。该指标体系包含教育机会、教育过程和教育结果三个...Abstract Based on the analysis of concept and main characteristics of educational inequality in China, an evaluation index system is built up in this paper, and then is used to analyze the present situation of educational inequality in China. The paper also analyzes the factors that influence educational inequality in China and proposes suggestions to diminish educational inequality. The paper c...学位：经济学博士院系专业：经济学院计划统计系_统计学学号：B20031002

论在我国建立临时仲裁制度的必要性——以当事人意思自治及相关私权利为主线的探讨

以当事人的意愿为基础的仲裁制度,既包括机构仲裁,也包括临时仲裁,其中,临时仲裁最能体现当事人的意愿。但是,我国虽然经历了20多年的改革开放,经济的市场化水平总体来讲仍然不是很高,当事人的意思自治仍无法被大力张扬。在这种大背景下,通过建立临时仲裁制度,允许当事人在解决纠纷时拥有更多的自主权,无疑对于培育和提高当事人的意思自治意识和能力具有重要的作用

变革与转型中证券公司风险管理技术体系的构建

本文提出证券公司需要构建以净资本的动态管理为核心,以VaR等为技术手段,适合我国证券公司现状的风险管理技术体系。并运用VaR等技术手段,对市场风险、操作风险的度量方法进行了探讨

The Statistical Analysis on Regional Education Inequality in China

本文在分析区域教育不平等表现形式的基础上构建了一套测度区域教育平等的指标体系。通过对单个指标的地区差异进行分析比较,以及对区域间教育平等状况进行综合的实证分析,提出了一些针对性的建议以改善地区教育不平等情况。This paper devises a system of indicators to measure the regional education equality.First,we use the individual indicators to compare the regional differences,and then,the indicator system is used to implement a comprehensive empirical study on the educational equality level among regions.We make a number of specific recommendations on how to improve the situation of educational inequality

上海曹扬环浜污染水体的生态修复

曹扬环浜是一条环形封闭水道,水质低于地表水V类标准,水体处于严重超富营养化水平,全浜暴发蓝藻水华现象。在采用截污、造流、生态恢复等生态工程措施综合治理后,随着健康水生态系统的建立,河浜水质逐步变好(由劣V类改善为接近Ⅲ类标准),水体透明见底,沉水植物覆盖率达70%~90%,水体一直维持“清水草型稳态”。重点介绍了河道治理中采用的生态修复措施及其作用,并从截污、营养盐、水生生物等方面分析了各项工程措施对抑制藻类生长、水质改善的影响,对我国城市小型河道的综合治理有很好的借鉴作用

Research on the rapid inactivation of typical algae blooms by hydroxyl radical

以典型水华藻铜绿微囊藻、针杆藻和四尾栅藻为研究对象,利用大气压强电离放电高效生成的羟基自由基(·OH)对3种藻进行杀灭.采用荧光染色、流式细胞仪; 和光合活性等生物学方法,确定·OH杀灭的阈值浓度和时间,并观察细胞形态变化.结果表明,当混合藻中铜绿微囊藻、针杆藻和四尾栅藻的初始藻密度分别为1; 9.5*10~4、21.8*10~4和4.90*10~4cells/mL时,; ·OH杀灭的阈值浓度为1.07mg/L,致死时间为4.5s;形态观察结果表明,处理后各种藻的形态是完整的,无内溶质溢出.因此,采用·OH可实现高; 效快速杀灭水华藻,有效保障饮用水安全.Algae blooming in water sources breaks out increasingly and seriously; threatened the water supply safety. Bench scale tests were conducted to; study the effects of ·OH generated from strong ionization discharge and; high pressure water jet cavitation on cell density, cell integrity and; photosynthetic capacity of 3kinds of typical freshwater algae. Algae; species including Microcystis aeruginosa, Synedra sp., and Scenedesmus; quadricuauda were respectively prepared at concentrations of 19.5*10~4,; 21.8*10~4 and 4.90*10~4 cells/mL, and the cell integrity was assessed by; flow cytometry. Results suggested that the ·OH lethal threshold of the; algae was 1.07mg/L within the exposure time of 4.5s. The cell; morphological observation results showed that all the cells were; integral and no cytoplasm composition spilled. Hence, large-scale; production of ·OH is a novel method to inactive typical algae species; efficiently and to protect drinking water safety simultaneously.国家科技支撑计划资助项目; 国家重大科研仪器研制项

Redistribution of iron during directional solidification of metallurgical-grade silicon at low growth rate

研究冶金级硅低速定向凝固过程中杂质铁的再分布。采用ICP-MS检测铁的浓度,绘制铁在固相、液相、晶界和晶体生长方向上的浓度示意图。铁浓度在固、液相中具有明显差异。依据质量守恒定理,计算得出溶质边界层约为4 mm,铁的有效分凝系数约为2.98×10~(-4)。在低速凝固条件下,铁容易偏析聚集在晶界。在生长方向上,由于低速凝固,铁浓度在硅锭86%高度以下几乎恒定,不完全符合Scheil方程规律。讨论了对流对铁再分布的影响,对流"死区"对铁再分布具有重要影响。Redistribution of iron during directional solidification of metallurgical-grade silicon(MG-Si) was conducted at low growth rate. Concentrations of iron were examined by ICP-MS and figured in solid and liquid phases, at grain boundary and in growth direction. Concentrations are significantly different between solid and liquid phases. The thickness of the solute boundary layer is about 4 mm verified by mass balance law, and the effective distribution coefficient is 2.98×10~(-4). Iron element easily segregates at grain boundary at low growth rate. In growth direction, concentrations are almost constant until 86% ingot height, and they do not meet the Scheil equation completely, which is caused by the low growth rate. The effect of convection on the redistribution of iron was discussed in detail. Especially, the "dead zone" of convection plays an important role in the iron redistribution.Projects(51334004,51204143)supported by the National Natural Science Foundation of China;; Project(2006L2003)supported by the Scientific Technological Innovation Platform of Fujian Province,Chin