THE TRANSFER BEHAVIOUR OF SOME CATIONS AT WATER／NITROBENZENE INTERFACE BY SEMIDIFFERENTIAL CYCLIC VOLTAMMETRY

The transfer of Sr~(2+) and Ba~(2+) ion, facilitated by 18-Crown-6 present in the aqueous phase, and of succinylcholine ion at w/nb interface were investigated by semi-differential cyclic voltammetry. A good polarographic curve of succinylcholine ion dissolved in water was obtained in the system of 0.01 mol/l LiCl (w)——0.01 mol/l TBATPB (nb). The peak current is directly proportional to the concentration of SC~(2+) ion. It can be used for the determination of SC and the detection limit is 1.05×10~(-5) mol/l.The apparent D~w and D~(nb) have been estimated. The transfer of Sr~(2+) and of Ba~(2+) at the interface are facilitated by 18-Crown-6 present in the aqueous phase and the peak current is directly proportional to the concentration of 18-Crown-6 in water. This method can be used for the determination of the complexing agent and for the stability constant of the complex formed in the aqueous phase.All the experimental results are in keeping with the theoretical.     

MFRG-DPIR FOR THE DISORDERED TRANSVERSE ISING MODEL

A new approximate scheme which is combined by the mean-field renormalization group theory (MFRG) with the discretized path-integral renormalization (DPIR) is employed in the study of the disordered tranverse Ising model (TIM). The critical properties of random-bonds Ising systems on a d-dimensional lattice are calculated with this new approximate scheme.     

高职思想品德课案例教学效果的显现化

高职思想品德课的现代案例教学的效果显现化,可以帮助和指导学生思想品德的发展。对思想品德课效果显现化的内容应包括认知目标、情感目标、心因目标,其显现化的手段已不能用简单、传统的“考试”来测评,而应考虑用一些更综合的方式进行。     

用VBA实现Auto CAD2002参数化三维造型设计

对参数化绘图的基本原理进行分析,介绍AutoCAD2002环境下运用VBA(VisualBa sicApplication)编程实现参数绘图的方法,实现了对渐开线圆柱齿轮三维造型设计的参数化。     

不对称D—A反应区域选择性及其理论解析

本文以教学研究为基础,系统研究不对称D—A反应区域选译性规律,并运用前线分子轨道理论,采用图解量子化学方法予以理论解析。     

四硫代钼酸铵与四硫代钨酸铵合成方法改进的研究

对钼酸铵与硫化氢反应合成四硫代钼酸铵、钨酸与硫化氢反应合成四硫代钨酸铵的方法进行了改进。结果表明，采用改进后的方法，反应时间分别为７小时和１１小时。比文献值￣［１１］缩短了许多。产率分别为９１．１％和５２．１％，均高于文献值￣［１］。     

芝麻素类型木脂素的合成研究Ⅳ2－苯基呋喃3，4－二羧酸二甲脂与格氏试剂反应的研究

研究了２－苯基呋喃－３，４－二羧酸二甲酯（２）与格氏试剂苯基溴化镁等（３）反应，生成酮基酸酯２－苯基－４－苯甲酰基呋喃－３－羧酸甲酯（１）的条件和方法。