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Search Results: 1 - 10 of 270984 matches for " 张萍 "
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大气H2O2测定方法的研究进展
Advances in Atmospheric Hydrogen Peroxide Determination Method
 [PDF]

安平,, 陈炫
Advances in Environmental Protection (AEP) , 2013, DOI: 10.12677/AEP.2013.32005
Abstract:
近年来,过氧化氢(H2O2)作为对流层大气中的一种重要污染物引起了许多研究者的关注。本文对近年来使用较为广泛的H2O2的测定方法及其各自优缺点进行了综述。着重介绍了螺旋管吸收法、膜扩散吸收法、冷阱捕集法、鼓泡吸收法以及雾液吸收法等H2O2的采样方法。同时还介绍了傅立叶红外法、分光光度法、化学发光法、滴定法、酶化法、荧光法等H2O2的分析方法。每种采样和分析方法都具有各自的优缺点,因此改进和优化H2O2采样和分析方法仍是今后大气H2O2研究的重点之一,该研究对准确分析大气中H2O2的浓度、了解H2O2在对流层大气中的化学过程非常重要。
Hydrogen peroxide is a kind of important pollutants in the troposphere. This work reviewed the progress on the sampling methods including solenoid absorption, membrane diffusion scrubber, cryogenic trap, impinger, and fog liquid absorption for hydrogen peroxide. The analytical techniques for hydrogen peroxide, such as Fourier infrared method, spectrophotometry, chemiluminescence, titration, and enzymatic method, were also discussed in this work. Modification of method is very important for an accurate analysis of the hydrogen peroxide concentration, because each sampling and analytical methods has its advantages and disadvantages. The study of the sampling methods and analyti-cal techniques is elementary for understanding the tropospheric chemistry of hydrogen peroxide.
中国MBA商业伦理教育的RMV范式构建研究
Research on RMV Education Mode of MBA Business Ethics in China
 [PDF]

长征, 赵西
Advances in Education (AE) , 2011, DOI: 10.12677/ae.2011.11008
Abstract:

基于我国MBA商业伦理教育现状的分析,提出并阐述了MBA商业伦理教育的RMV范式。该范式中,商业伦理教育分为三个层次,分别为责任伦理层次(R,Responsibility)、道德伦理层次(M,Moral)和价值伦理层次(V,Value),并给出各层次商业伦理教育所应该匹配的不同教学手段与教学内容。其中,责任伦理层次教育致力于构建基于外部压力的伦理行为的动力机制,道德伦理层次教育致力于构建基于利益驱动的伦理行为的动力机制,而价值伦理层次教育则致力于构建基于内在追求的伦理行为的动力机制。在每一层次的商业伦理教育中,为MBA学员提供解决实际伦理困境的伦理决策技能与工具都是关键。
Based on the analysis of the status quo of MBA business ethics education in China, the paper proposes the RMV Mode of MBA business ethics education. The modes proposes that there are three levels of teaching of business ethics education, respectively responsibility (R) level, moral (M) level and value (V) level, and proposes different teaching methods and teaching contents for each level. Of which, R level constructs the driving mechanism of behavior based on the external pressure of the MBA students, M level constructs the driving mechanism of behavior based on the benefits seeking motivation of the MBA students, and V level constructs the driving mechanism of behavior based on the internal value seeking motivation of the MBA stu-dents. In each level, it is critical for the business ethics education to provide the MBA students with the ethical decision-making skills and tools for resolving the practical ethical dilemmas.

脑小血管病相关认知功能障碍的影像学评估研究进展
The Neuroimaging Assessment Progress of Cognitive Impairment Associated with Cerebral Small Vessel Disease
 [PDF]

李卫,
International Journal of Psychiatry and Neurology (IJPN) , 2016, DOI: 10.12677/IJPN.2016.52004
Abstract:
脑小血管病主要是指小动脉及微动脉病变引起的缺血或出血性改变,它是引起血管性认知功能障碍主要原因。影像学上主要表现为脑白质高信号,腔隙性脑梗死,脑微出血及血管周围间隙扩大,这四种类型分别可以使用多种评价方法进行定量和半定量评估,对于解释相应的认知功能减退提供了客观依据。
Cerebral small vessel disease (CSVD) is the most common vascular cause of cognitive impairment, which refers to a group of ischemic and hemorrhagic changes that mainly affect the small arteries and arterioles. Features seen on neuroimaging include white matter hyperintensities, lacunar infarction, cerebral microbleed and enlarged perivascular space, which can be assessed by both quantitative analysis and semi-quantitative analysis, and this can provide evidence for the explanation of cognitive impairment.
含尘气体分离方法
Separation Method for Dust Gas
 [PDF]

赵平,
Hans Journal of Chemical Engineering and Technology (HJCET) , 2016, DOI: 10.12677/HJCET.2016.66016
Abstract:
气固分离是非均相物系分离中的重要部分。随着社会发展与科技进步,出现了许多新的气固分离方法与设备,但是其依据的依然是化工原理中的过滤、膜分离、沉降、电除尘、吸附、湿法除尘等单元操作。不同环境下对分离方法有不同要求,随着处理气体范围增大、颗粒粒径减小,含尘气体分离难度、费用随着增大。
Gas Solid separation is an important part of heterogeneous mixture separation. New Gas Solid se-paration methods and equipments appear with the social development and technology progress, as their foundation is still filtration, membrane separation, settlement, electrostatic precipitation, adsorption, wet precipitation etc. in unit operation. Different requirement is proposed to separation method under different condition. Separation difficulty and cost increase with processed gas range increases and dust diameter decreases.
病毒V-myc表达质粒的构建

科学通报 , 1990,
Abstract: 在当今的癌基因研究中,研究癌组织中有关癌基因产物已成为探讨肿瘤发病机制、癌基因的激活及把癌基因的激活程度与肿瘤发展的临床表现及愈后联系起来的一个重要的不可缺少的研究手段。目前已知myc-基因家族的扩增涉及到多种组织学类型不同的恶性肿瘤并与恶性程度相关。如C-myc基因扩增的肿瘤有急性早幼粒细胞性白血病、恶性淋巴瘤、结肠癌、
病毒V-myc表达质粒的构建

科学通报 , 1990,
Abstract: 在当今的癌基因研究中,研究癌组织中有关癌基因产物已成为探讨肿瘤发病机制、癌基因的激活及把癌基因的激活程度与肿瘤发展的临床表现及愈后联系起来的一个重要的不可缺少的研究手段。目前已知myc-基因家族的扩增涉及到多种组织学类型不同的恶性肿瘤并与恶性程度相关。如C-myc基因扩增的肿瘤有急性早幼粒细胞性白血病、恶性淋巴瘤、结肠癌、
USB总线及其接口设计实现方法分析

红外 , 2002,
Abstract: USB由于速度快、使用灵活、易于扩展、支持即插即用和成本较低等一系列优良特性,正逐步取代传统的接口总线而应用于计算机中,本文介绍了USB总线的产生发展、基本特点、体系结构及其接口的设计实现方法。
Using Database to Manage the Network Site''s Dynamic Layout Based on ASP
基于ASP的网站动态布局的数据库化管理


计算机系统应用 , 2002,
Abstract: 本文针对目前许多网站不重视网站的动态布局,提出并实现了网站布局的数据库化管理方案。
中国大龄未婚问题及特点

期刊检索-中国人口科学 , 1989,
Abstract: <正>一我国大龄未婚人口概观(一)性别构成根据国家统计局统计,1982年我国28—49岁未婚人口共有11269362人,占同龄人口的4.36%。其中男性为10555559人,占同龄男性人口的7.78%,女性为713803人,占同龄女性人口的0.58%。大龄未婚男性是大龄未婚女性人数的15倍。1987年1%人口抽样调查表明,全国28—49岁未婚人口又有所增加,达到
桥梁钻孔灌注桩断桩事故处理方案

煤炭工程 , 2014, DOI: 10.11799/ce201412017
Abstract: 随着我国工程建设的不断快速发展,钻孔灌注桩作为一种基础形式以其适应性强、成本适中、施工简便等特点被广泛地应用于公路桥梁及其它工程领域并取得了良好的效果。钻孔灌注桩属于地下隐蔽工程,在实践中断桩现象时有发生,本文针对康沟1号大桥钻孔灌注桩的断桩处理方案进行阐述,为工程实践中断桩缺陷处理提供参考依据。
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