关于政府实施价格政策的效果分析

价格政策是政府调节商品市场价格的重要手段之一 ,也是维护消费者利益和刺激厂商供给积极性的有效手段。本文分析了政府可以采取的四种价格手段所带来的经济后果 ,提出了不同情况下政府应该采取的价格政策。     

一类变系数非线性微分方程的解

本文给出了一阶变系数非线性微分方程特殊类型的解,并举例。     

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给出了混流式转轮叶片与上冠(或下环)采用部分焊透裂纹尖端应力强 度因子的分析模型. 根据给出的模型，结合某电站转轮强度分析结果，通过实际算例，明 确了预留焊缝长度的确定方法. 该方法适用于所有混流式转轮叶片与上冠(或下环)之间 采用部分焊透预留焊缝长度的确定.     

圆管导热系数测试方法研究

本文阐述了稳态法测试圆管导热系数的原理，分析了常用“圆管法”存在的主要问题，提出了新的相对较简易的测试方法，分析了新方法测试的准确性，同时提出了使用新方法时需要注意的关键问题，在圆管导热系数测试工作中具有一定的指导意义。     

Measurements on polar liquids at a microwave frequency — evaluation of molecular parameters — a new method

A simple method of estimating the dipole moment (μ) and relaxation time (τ) of polar molecules in liquid state, from a single set of dielectric measurements at high frequency, is proposed by using the concept of dielectric virial coefficients and employing Onsager model. The proposed method is tested in a number of polar liquids and the results are discussed.     

高校引进人才“安家费”的税务筹划

随着高校之间人才竞争的加剧,很多高校,尤其是地方新建本科院校为吸引优秀人才加盟,竞相提供高额购房补贴或安家费。对于高校引进人才安家费等问题让高校财务人员感到困惑,是否应当扣缴个人所得税,如何进行税务筹划才能使税负最低。结合相关税法的规定,提出解决上述问题的对策和建议,是很多引进人才的高校面临的迫切问题。     

Novel approaches for selenium speciation in foodstuffs and biological specimens: A review

Selenium is an essential element for human health. It has been recognized as an antioxidant and chemopreventive agent in cancer. Selenium is known to develop its biological activity via selenocysteine residue in the catalytically active centre of selenoproteins. The main source of selenium in human beings is the diet. However, in several regions of the world the content of selenium in diet has been estimated insufficient for a correct expression of the proteins. The beneficial effects of selenium on human health are strongly dependent on its chemical form and concentration. This review critically evaluated the state-of-the art of selenium speciation in biological matrices mainly focused in nutritional and food products. Besides the number of publications related to selenium speciation, isolation and accurate characterization and quantification of selenium species is still a challenge. Hyphenated techniques based on coupling chromatography separation with inductively coupled plasma spectrometry (ICP-MS) and its combination with molecular mass spectrometry (ESI-MS, ESI-MS-MS and MALDI-TOF) and isotopic dilution allow identification, quantification and structural characterization of selenium species. Particular attention is paid in the development of Se-enriched food and nutritional products and how the application of the techniques mentioned above is mandatory to get reliable results on selenium metabolisms in these particular matrices.     

面料性能对平领重叠量设计影响研究

本文分析了面料性能与平领重叠量之间的关系。采用选取10种常见面料,使用KES-FB织物风格仪测试出面料的16项力学性能,再利用SAS系统对数据进行主成分分析,最终得出3个最主要的影响因素：拉伸功回复率RT、压缩功回复率RC及单位面积重量W。用这10种面料分别做出领宽为8.5cm的平领,找出每种面料所制作领子的最佳重叠量,运用SAS系统对RT、RC、W这三个因素与最佳重叠量进行回归分析,得出它们之间的定量关系。     

怎样才能成为优秀发令员的探讨

根据发令裁判员的职责和任务,通过调查咨询及资料统计方法,分析了优秀发令裁判员应具备的条件,探讨了对优秀发令员全面的技术要求及其培养方法     

以材料性能和强度安全裕量确定齿数的方法

从等强度概念出发,推出一个据以选取渐开线齿轮齿数的简单、实用公式。此公式同时考虑了材料性能、安全裕量及传动比等多因素对选择齿数的影响,使设计结果趋于优化、便于控制。