SEPARATING SCN~- FROM DESULPHURIZATION WASTE SOLUTION OF COCKING PLANT BY D241 RESIN

1. INTRODUCTION In the process of coking plant, about 30%~35% sulfur is transformed to H2S and some other sulfide, which form impurity in coal gas together with NH3 and HCN. Only 0.1% H2S containing in air can lead to die, so it is very important to carry on desulphurization and decyanation with coal gas [1~3]. Currently desulphurization and decyanation craft technique have Dry Oxidation Technology, Wet Oxidation Technology and Liquid Absorption Technology [2] three main kinds. The…     

Spray Freeze-drying – The Process of Choice for Low Water Soluble Drugs?

Most of the novel highly potent drugs, developed on the basis of modern molecular medicine, taking into account cell surface recognition techniques, show poor water solubility. A chemical modification of the drug substance enhancing the solubility often decreases the pharmacological activity. Thus, as an alternative an increase of the solubility can be obtained by the reduction of the size of the drug particles. Unfortunately, it is often difficult to obtain micro or nanosized drug particles by classical or more advanced crystallization using supercritical gases or by milling techniques. In addition, nanosized particles are often not physically stable and need to be stabilized in an appropriate matrix. Thus, it may be of interest to manufacture directly nanosized drug particles stabilized in an inert hydrophilic matrix, i.e. nanostructured and nanocomposite systems. Solid solutions and solid dispersions represent nanostructured and nanocomposite systems. In this context, the use of the vacuum-fluidized-bed technique for the spray-drying of a low water soluble drug cosolubilized with a hydrophilic excipient in a polar organic solvent is discussed. In order to avoid the use of organic solvents, a special spray-freeze-drying technique working at atmospheric pressure is presented. This process is very suitable for temperature and otherwise sensitive drugs such as pharmaproteins.     

我国建筑结构质量现状分析

结合我国当前建筑结构质量状况 ,分析了质量事故发生的时间和原因 ,指出了改善、控制和维修等措施     

加强化工原理课程建设提高教学质量

提高教学质量的一个关键方面是建设好课程，作就化工原理课程建设从目标确定，课程整合，队伍建设，质量管理，课程评估等多方面进行了探讨，并采取了相应的措施，取得了成绩。     

豫西丘陵区不同氮、钾肥用量配施对豫麦47号品质和产量的影响

在该试验条件下 ,豫麦 47号的湿面筋含量平均为 2 8.3%,吸水率、面团形成时间、稳定时间分别为 6 3.2 %、3.9分钟和 4.2分钟 ,与豫麦 47号适生区栽培条件下均有较大差异。氮肥可有效提高豫麦 47号的冬前分蘖、亩有效穗数和湿面筋含量 ,钾肥可提高亩穗数和千粒重。     

合理利用计算机辅助教学 提高旅游地理教学质量

计算机辅助教学与传统教学方法相比具有许多优越性，它是直观教学、视觉教学和听觉教学发展的结果，制作高质量的教学课件，合理使用计算机辅助教学，是提高旅游地理课教学质量的关键。     

空气/水界面水分子的取向和运动

对四种不同的实验构型下空气／水界面自由O-H键在3700cm~(-1)的和频振动光谱的分析表明,水分子在空气／水界面的取向运动只可能是在平衡位置附近有限角度之内的受限转动。界面水分子的自由O-H键取向距界面法线约33°,而取向分布或运动的宽度不超过15°。这一图像显著地不同于Wei等人(Phys. Rev. Lett.86,4799(2001))只通过单一的SFG实验构型所得出结论,即：空气／水界面的水分子在超快的振动弛豫时间内在很大的角度范围内运动。     

信用担保风险的模糊综合评审研究

信用担保机构是连接银行和企业的桥梁，对于改善企业融资环境和拓展银行业务具有重要意义，信用担保风险的评审是担保机构能否生存及有效运行的关键。信用风险的评审机制主观性强，对担保项目进行客观，公正的评审比较困难。本采用模糊数学中的综合判别方法，全面考虑风险评审所涵盖的各种风险指标及其重要度，建立了定性分析与定量分析方法相结合的信用担保风险综合评审模型，为担保机构提供了一种相对科学、客观的评审方法。     

对高师体育教育专业学生培养的思考

指出了在高师体育专业学生培养过程中存在的问题,提出了以知识为基础,知识、能力、素质三者和谐统一的理想人才模式,为达到这个目标,提出的对策有:深化课程体系改革;完善对学生的管理;加强教师队伍建设;进行思想品德、人文素质教育;注重实践,促进学生能力发展.     

中水回用前景及其实际意义

概述了中水及中水回用的概念,分析了目前中水回用中存在的问题,探讨了水源热泵技术的应用。