342 research outputs found

    The preliminary study of the High-density Lipoprotein (HDL - C) changes on Myocarditis and possible mechanism

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    【目的】心肌炎是指各种原因引起的心肌的炎症性病变,轻症患者无任何症状,而重症患者可发生心力衰竭、心源性休克甚至猝死,目前其发病机制仍未完全明确,临床上也没有特异性的治疗手段。血脂代谢紊乱在动脉硬化性心血管病中的研究较多,但在心肌炎中的作用研究较少。本课题拟对心肌炎中的血脂代谢情况进行初步探讨,并进一步与心肌炎的炎症程度进行相关性分析,为心肌炎诊断和治疗提供新思路。 【方法】本研究分两部分内容:(一)临床研究:选取2013-2016年入住我院诊断明确的急性心肌炎患者,对照组选取健康体检患者,分为急性心肌炎组n=110,正常对照组n=30,对炎症指标CRP、心肌损伤标志物CK-MB/cTnT水平...【Objective】Myocarditis is an inflammatory heart disease that poses many risks to humans. It is progressive, can cause severe heart failure, arrhythmia, shock, and death. The pathogenesis of myocarditis is not clear now and there is no specific treatment for myocarditis. Dyslipidemia plays an important role in the pathogenesis of atherosclerosis and other cardiovascular disease. However, rare resea...学位:医学硕士院系专业:医学院_内科学学号:2452014115350

    A Research on the Business Model of KLC

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    金龙礼宾车有限公司是我国礼宾车产业的领先制造商。本研究利用EREV模型系统地提炼出该公司的商业模式,分析了该模式的特点、影响因素、实践意义及管理学价值。 EREV模型是一个分析商业模式的通用分析模型。该模型提示,商业模式是企业据以创造价值的核心逻辑模型,通过系统辨识一个企业的资源开发机制、资源利用机制和价值生产机制,就可以实现其认知。 研究发现,金龙礼宾车公司的商业模式是:通过采取全球资源整合与本土化二次技术开发相结合的策略形成核心技术资源,再以核心资源为基础实施精工制造策略,最后创造出高端产品。 这套商业模式启示人们,本土化二次技术开发策略是中国企业掌握自主核心技术的必由之路,精工制造...Kinglong Coach Corporation(KLC) is the leading firm of the ceremony coach industry in China. This thesis generalizes its business model by the means of EREV model, and further explores the model's features, predetermined factors, practice significance and management value. EREV model is a general model used for analyzing business model. The model shows that a business model is a core logic model...学位:工商管理硕士院系专业:管理学院_工商管理硕士(高级管理人员工商管理硕士)学号:X201415622

    Synthesis of graphene by PECVD and research on the performance of graphene-based Li-ion batteries

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    石墨烯是由碳六元环形成的二维蜂窝状晶格结构,只有一个碳原子的厚度,是第一种真正意义上的二维材料。由于这种特殊的结构,石墨烯拥有一些优异的物理和化学性能,如优异的力学性能、较好的柔韧性、良好的导电性能、很高的电子迁移率、较大的杨氏模量。这使得石墨烯在纳米电子器件、超级计算机、太阳能电池、透明电极等的应用方面具有很高的应用价值。但是所有这一切的前提是需要大规模制备出高质量的石墨烯。目前,石墨烯制备方法已有很多,但是要想实现石墨烯的产业化,就必须针对不同的应用实现石墨烯的大规模、高质量、可调控生长。通过石墨烯常用的几种制备方法相比较,化学气相沉积法(CVD)是最有可能实现这一要求的方法。而在诸多的C...Graphene, a monolayer of sp2-bonded carbon atoms, is a quasi-two-dimensional material. It is only one carbon atomic layer thick. The unique structure of graphene makes it have some excellent physical and chemical properties, such as an extremely large strength, highly flexiblity, excellent electrical conductivity, large electron mobility and relatively large Young's modulus. This makes graphene a ...学位:工程硕士院系专业:能源学院_工程硕士(材料工程)学号:3242013115230

    The Design and Implementation of Embedded Streaming Media Player

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    在这个移动技术飞速发展的时代,手持多媒体设备随处可见几乎人人都有。MP3、MP4、MP5、数码相框等备受用户青睐。同时,随着Internet网络的迅猛发展,网络音乐,特别是网络电台,受到越来越多的大众追棒。网络媒体因其及时、海量、时尚的风格,吸引了越来越多消费者和商家的关注。但是,网络音乐的终端――流媒体播放器,大部分只能在PC上找到。本课题正是基于以上背景,设计构建了一个嵌入式流媒体播放器系统,使其支持WiFi无线,能随时随地收听及时的网络电台,充分利用了网络资源满足用户无尽的需求,填补了嵌入式移动设备在存储空间上较为有限的不足。同时其支持存储在MP3介质或SD卡上的音乐,在听歌的同时还可以...In this era of rapid development of mobile technology, Handheld multimedia devices almost reach everywhere and everybody. Mp5, digital camera and other products are more and more favoured by customers. at the same time, with the swift development of Internet, the network music, especially the network radio, is more and more popular. the network media abstract enormous attention of customers and me...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X200823005

    Evolution of Domain Structures of Epitaxial Ferroelectric Film under Different Electrical Boundary Conditions

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    本文采用基于金茨堡—朗道—德文希尔唯象理论的相场法,研究二维铁电薄膜畴结构的演化,并采用有限差分方法数值求解相场方程。首次提出了中间电学边界条件及其两类参数,并研究三种电学边界条件(中间电学边界条件、开路电学边界条件及短路电学边界条件)下铁电薄膜的畴结构及铁电性能。 结果显示,开路电学边界条件和短路电学边界条件下,薄膜畴结构有明显的尺寸效应。开路电学边界条件下,薄膜厚度较小时出现水平单畴结构;在临界厚度14nm处发生了水平单畴结构向多漩涡畴结构的转变;随厚度进一步增加,为了降低去极化电场能,薄膜仍为多漩涡畴结构。短路电学边界条件下,薄膜厚度较小时呈现垂直单畴结构;在临界厚度5.6nm处发生垂...Ginzburg-Landau-Devonshire(GLD) theory based phase field method is applied to study the evolution of domain structures of ferroelectric film. The phase field equations are numerically solved by finite difference method. An intermediate electrical boundary condition with two kinds of parameters is proposed firstly. The domain structures and ferroelectric properties are investigated under three elec...学位:工学硕士院系专业:材料学院_材料加工工程学号:2072012115002

    A Research on the Legal Issues of Corporation Contribution

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    我国《公司法》明确了公司应当承担社会责任,鉴于公司捐赠是公司承担社会责任的形式之一,故在此程度上,也基本可以推定《公司法》已间接确认了公司捐赠的正当性。但由于该法对公司社会责任的规定过于原则,缺乏具体条文对公司捐赠进行规范,且《公益事业捐赠法》、《合同法》以及税法等相关法律对公司捐赠的规制也大多有欠具体,且未作出数法配套的规定,故在实践中仍屡有出现难以有效规制公司捐赠之情形。 本文在比较国内外公司捐赠相关理论和立法的基础上,参考有关我国公司捐赠的最新社会调查与统计资料,对公司捐赠进行了规范分析和实证分析。以妥善解决实践中公司捐赠所遭遇的法律失范困境为目标,从公司捐赠与股东利益、债权人利益和受...The Company Law has clarified that companies should take social responsibilities. Due to corporate contribution is recognized as one aspects of corporate social responsibility, it can be explained that the Company Law has affirmed the legitimacy of corporate contribution indirectly. On the other hand, there is no concrete article specifying corporate contribution in the Company Law, as well as in ...学位:法律硕士院系专业:法学院法律系_法律硕士(JM)学号:1302009115037

    The Research on Back-door Listing in A Stock Market for Private Enterprises of Mainland China Registered and Listed Overseas ——A Case Study of The Back-door Listing of Interchina Water Treatment(Tianjin) Co.,Ltd.

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    随着股权分置改革的推进,困扰我国A股市场已久的制度性痼疾已有所好转,再加上良好的宏观经济基本面以及近两年波澜壮阔的行情,让不少以往远赴境外注册上市的内地民企重新将目光投向了内地的A股市场。但境内外严格的监管条例、监管利益的争夺以及政策扶持的缺乏,却让这类企业分拆回归A股的美梦难圆。 不过,这并不能掩盖潜在的巨大需求和广阔前景。本文所分析案例中的买壳方控股股东——国中控股(0202.HK)正是该类企业中这方面罕有的成功者,其旗下的全资子公司——国中水务(天津)已经成功地买壳S*ST黑龙,即将从香港H股市场返回内地A股市场,实现跨境分拆上市。 本文在首先对“买壳上市”的基本概念进行了详细的阐释...As the reform of non-tradable shares progresses, the health condition of A stock market is turning around, combined with the promising macroeconomy prospects and flourishing market performance of the recent two years, which intrigues private enterprises of mainland China registered and listed overseas so much. However, strict supervisions from home and abroad and the competition between different ...学位:经济学硕士院系专业:经济学院财政金融系_投资学学号:2005130099

    Research and Application of the Intelligent Data Exchange Platform

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    中国电信集团已开展全网移动计费运营,全国计费结算中心与各省计费结算中心之间的纵向数据传输实时性越来越高,数据种类越来越多,并且不断涌现出大型甚至超大型的运营数据中心。目前大部分省计费结算中心都依托综合结算系统的前置采集机进行数据交换,这些系统建设各异,没有统一的接入标准和保障机制,缺乏数据安全保障和数据管理机制,从全网运营的情况来看,数据交换的故障、延迟、数据传送丢失等问题屡见不鲜,影响了各省移动信控的顺利展开。为了保证这些数据中心的高效率运作,数据管理与数据交换技术成为这些数据中心在数据信息实施中重点关注的主题。本文对面向电信行业专项领域的数据信息进行了重点研究,立足于基本的电信数据交换业务...China telecom group has started to operate mobile billing. The data transfer between country billing and collection center and all provinces billing and collection center need to be more in real time. Currently most provinces billing and collection center use integrated collection system to exchange data. And all the systems are different. They don’t have uniform access standard and guarantee mec...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X200823010

    Research and Design of Third-party Telemarketing Platform

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    随着通信数字化技术的迅速发展,通信技术和计算机技术相互渗透的进程明显加快,出现了各种通信网络和计算机网的集成方案,这些集成不但体现在技术方面,而且在业务上也已经广泛出现。电话行销平台是基于这两种技术整合后产生的全新应用。构建一个有效的电话行销平台,作为企业与客户沟通的一个平台,对于更有效地为客户服务、丰富企业的营销渠道、扩大企业知名度、提高整体竞争力有着十分重要的现实意义。 电话行销是通过使用电话、传真等通信技术有计划、有组织、高效率地扩大顾客群、提高顾客满意度、维护顾客利益的一种市场行为。电话行销平台是通过集中、快速、智能、规范地处理电话信息,以实现高效优质服务的计算机辅助系统,它大大提高...With the rapid development of the digital communication technology, it is obvious for the mixture process of the communication technology and computer technology to proceed forwards, thereby, there come out many kinds of solutions for communication network and computer network, which are not only shown in the technology aspect but also widely used in the business. Based on these two technologies, ...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X200923037
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