663 research outputs found

    CRISPR/Cas9 mediated genome editing and construction of sgRNA efficiency testing system in C. elegans

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    CRISPR/Cas9做为第三代人工核酸内切酶,由于其操作简单、特异性强、及效率高的特性,目前已被广泛用于多种生物的基因组编辑。CRISPR/Cas9介导的基因编辑技术不仅可以用于基因敲除,而且也可以用于精确的基因插入,成为基因功能研究非常有前途的工具。在短短的两年里,已有二十几篇文章先后报道了在秀丽隐杆线虫中利用CRISPR/Cas9对不同基因进行的精确编辑。 本研究中,我们利用CRISPR/Cas9系统,通过Cas9切割导致DNA断裂诱导同源重组,在对dpy-13基因敲除的同时,成功进行了1.8kb基因片段的精确插入。虽然我们尝试在dpy-13基因上进行更大片段(3.8kb)的敲入没有获...CRISPR/Cas9 is the third generation of artificial endonucleases. It has been successfully applied in a variety of organisms for genome editing, due to its easiness and specificity . It has become a very promising tool for studying gene function, not only because it could be used to knock out genes but also knock in genes precisely. DNA damage created by CRISPR/Cas9 system would lead to homologou...学位:理学硕士院系专业:生命科学学院_细胞生物学学号:2162012115244

    Effects of statins and Xuezhikang on the expression of secretory phospholipase A2, group IIA in rat vascular smooth muscle cells

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    摘要 目的 动脉粥样硬化是以血管炎症病变形成为特征的多因子疾病,其中IIA型分泌性磷脂酶A2参与动脉粥样硬化的血管炎症过程,并有一定抗炎作用。当今,他汀类药物和血脂康对心血管系统有多效性的影响,而被广泛运用于临床对心血管疾病相关风险的预防和治疗。然而,目前二者对IIA型分泌性磷脂酶A2的具体作用仍不清楚。因此,我们分别研究了他汀和血脂康对大鼠胸主动脉平滑肌细胞表达IIA型分泌性磷脂酶A2的调控,从而进一步为二者在心血管疾病运用中的机制提供理论依据。 方法 1.细胞培养:取130-150gSD大鼠胸主动脉,分离中层平滑肌,培养,鉴定,传代,用状态稳定良好的2-5代细胞实验。 2.实验分...Abstract Objective Atherosclerosis is a multifactorial vascular disease characterized by formation of inflammatory lesions. Secretory phospholipase A2, group IIA (sPLA2-IIA) involves in this process and plays a certain anti-inflammatory role in it. Both Statins and Xuezhikang are widely used in the prevention and treatment of cardiovascular disease risk because of their pleiotropic effects ...学位:医学硕士院系专业:医学院_内科学学号:2452013115348

    An Empirical Study on Industrial Transfer across Taiwan Strait

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    随着经济全球化和信息产业的高速发展,发达国家和地区纷纷进行产业转移,加快产业结构升级。当前,由美国次贷危机引发的金融风暴更是加速了全球制造业格局调整,中国应抓住此次历史性机遇,加快实现“制造大国”向“制造强国”的转变。在这样的背景下,研究海峡两岸产业转移对海峡西岸经济圈建设、福建省外贸转型和产业升级都具有很强的现实意义。 本文立足福建省,深入系统地研究了台闽产业转移对我省外贸转型和产业升级的推动作用,以及通过实证分析测度了近年来影响海峡两岸产业转移区位选择的多种因素,最后,为我省又好又快地承接新一轮台湾产业转移,提出构建台闽产业转移“促进体系”的若干建议。 本文的主要创新点:第一,本文将产...With the rapid development of economic globalization and information industries, the developed countries are transferring industries to upgrade industrial structure. Even more, the present financial storm caused by subprime mortgage crisis of the United States has accelerated the adjustment of global manufacturing layouts, making a historical opportunity that China must seize to speed up the trans...学位:经济学硕士院系专业:经济学院国际贸易系_国际贸易学学号:1572006115116

    A Comparative Study on the Nominal Multiple-meaning Word of Modern Chinese Dictionary and Modern Chinese Standard Dictionary

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    本文以《现代汉语词典》(第五版)和《现代汉语规范词典》中的名词性多义字目为研究对象,重点比较分析了两部词典中名词性多义字目在词性标注、条目分立、义项建立与分合等方面的问题。文章主要分为五大部分: 第一章为绪论,主要介绍本文的研究对象、目的、意义、材料、方法以及相关的研究现状。 第二章主要分析《现代汉语词典》和《现代汉语规范词典》中名词性多义字目的分立情况。首先按照两部词典对条目义项的词性标注类别考察它们的总体收录情况,并探讨与词性标注有关的一些因素。其次对两部词典中标注“”、“”或“”的名词性多义字目进行对比,分析两者对这类条目的设置规则。 第三章统计了两部词典共有和独有的名词性多义字目...We take the Nominal multiple-meaning words which are collected by Modern Chinese Dictionary (fifth edition) and modern Chinese Standard Dictionary as the object of this thesis, focusing on comparison about the Nominal multiple-meaning words between the two dictionaries. This thesis analyzes several questions being involved in label of word class, separation of entry, establishment and combination ...学位:文学硕士院系专业:人文学院中文系_语言学及应用语言学学号:1022008115240

    Design and Implementation of Religious Information Management System based on ASP.NET Technology

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    随着我国经济持续发展,社会稳定,人民生活日益富裕,宗教对我国社会、政治生活的影响更加凸显,特别是对山区县,宗教活动场所多且分布广,如何有效依法管理和服务是摆在宗教工作者面前的一大难题。长久以来,由于宗教管理课题较为敏感,对于宗教信息化的工作开展较迟,很多基础工作者还停留在纸质手工登记,或者较好一点用Word或Excel表来管理。这样一来,随着人员岗位调换或退休,其以往的工作资源,资料就随着人员的变动而自动丢失,新的人员调入,工作还需从头开始。因此,需要借助某县现有信息系统资源的特点,创建符合本地要求的宗教信息管理系统,来实现他们对于宗教活动场所管理、人员管理、活动交流服务管理等,从而真正实现对...With the development of Chinese economy , the stability of Chinese society and the better life of people, the influence of religion on society and political life in our country is more prominent, especially on the mountain counties. In these counties, religion sites are many and widely distributed, so it is a major challenge for workers to manage and serve effectively according to the law. Due to ...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X201323225

    Fiscal decentralization at and below Fujian province and education expenditure of county-level government

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    改革开放以来,我国社会主义市场经济体制的逐步建立以及财政体制的逐步完善都为我国经济发展水平的迅速提高奠定了良好的基础。1994年的分税制改革让我国彻底告别了统收统支的时代,而政治上的集权更是激励着地方政府积极加快经济建设,创造了我国经济增长的奇迹。近些年,省以下的财政体制改革也越来越受到重视,县域经济是我国国民经济的基础环节,县级财政也是我国公共财政体系的重要组成部分。同样地,在县级政府的财政支出中,教育支出也是极其重要的组成部分。与此同时,县级政府还是负责提供义务教育的主要力量。基于以上原因,本文将研究的重点放在县一级政府层面。不同的省以下财政体制必然也会导致县级政府官员在财政支出结构方面做...Since the great reform and opening,the establishment of socialist market economy and the perfection of financial system of China build a very nice foundation of the rapid development of China’s economy. The reform of fiscal system in 1994(the reform of tax-sharing system)end the era of “state-monopolized revenue and expenditure”,and the centralization in the political aspect stimulates local gover...学位:经济学硕士院系专业:经济学院_财政学学号:1552013115186

    Interaction under Computer-mediated Circumstances and the Communication Effects of Tacit Knowledge: An Explorative Research Based on Zhihu

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    在创新扩散的五阶段模型中,获取相关的信息或知识是第一步,其中包括默会知识(know-how)。知晓类(know-what)和原理类知识(know-why)可以通过大众媒介传播,默会知识却很难在大众媒介上传播,通常以面对面人际渠道传播。然而,目前的传播学研究很少关注默会知识传播对于创新采纳的影响。互联网兼具人际传播和大众传播的特点,因而探究默会知识是否可以以及如何能够在计算机媒介上传播,是一个值得传播学关注的基本问题。 本研究将社会化问答网站“知乎”上“产品运营”话题下的相关问答和评论作为研究对象,运用内容分析法分析在“知乎”上传播的默会知识的显性化程度和互动程度各是如何。研究数据表明,一、显...In the five-step model of innovation diffusion, the first step is to acquire the related information or knowledge, including tacit knowledge. Know-what and know-why can be communicated via mass media, while know-how cannot. Tacit knowledge is usually transferred via face-to-face interpersonal communication. However, present communication studies pay little attention to the impact of tacit knowledg...学位:文学硕士院系专业:新闻传播学院_传播学学号:3362013115302

    The Dilemma of Romanticism in Postcolonial Context: Self-Identity Quest Through Reading and Writing in Disgrace

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    作为南非当代作家库切迄今为止最具影响力的作品,《耻》自1991年出版后就受到国内外学界的广泛关注。众多东西方学者已经对该小说所呈现的多样化主题进行了研究,其中小说包含的后殖民因素得到了最多关注。基于已有的各类研究,本文致力于借用后殖民理论分析小说主人公卢里对个人身份的探索,以浪漫主义文本为切入点,结合对卢里多重身份困境的分析,提出浪漫主义阅读是卢里构建个人身份的基础,而浪漫主义书写最终成为卢里个人身份解构的展现。 《耻》主要围绕卢里在后殖民背景下的生活境遇展开叙述。卢里作为一个深受西方浪漫主义思想指引的大学教授,无法适应后种族隔离时代的新环境而身陷诸多困境之中。在爱情方面,他不顾性骚扰对梅拉...As the most successful work of J. M. Coetzee, Disgrace has attracted lots of attention at home and abroad since its publication in 1991. Many scholars have done profound studies about its multiple features, among which the most attractive and popular perspective is the postcolonial point of view. Based on previous studies, this thesis intends to apply postcolonial theory to study the protagonist’s...学位:文学硕士院系专业:外文学院_英语语言文学学号:1202014115270
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