The reliability and validity of measurement of Expressed Emotion in family members with schizophrenia

2002-2003 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishe

新型无机材料合成的途径

本文综述了新型无机材料合成的途径主要有四：一是从无机相图探索；二是从固体缺陷和掺杂探索；三是从材料性能与组成、结构相结合探索；四是综合各途径探

无机化学实验教学改革的探讨

本文简要分析了无机化学实验教学存在的问题,提出了通过提高认识,改编实验教材,改进教学方法,实施实验室开放,引进现代化教学手段等无机化学实验教学教草的探讨

Determination of Hydroxyl Value in the Oxidation Product of Rosin and Study on Its Methods

[目的]测定松香氧化物中的羟值,并对操作步骤进行分析。[方法]用乙酰化法首次测定了松香氧化物中的羟值,探讨了测定过程中影响试验结果的一些因素。[结果]松香氧化物羟值较大,说明松香在氧化过程中生成了较多羟基。[结论]建立松香氧化物中羟值的测定方法可为松香的深加工技术提供帮助。[Objective]The research aimed to determinate the hydroxyl value in the oxidation product of rosin,and analyze its producers.[Method]The acetylation method was used to determinate the hydroxyl value in the oxidation product of rosin firstly,and discuss some influencing factors during determination.[Result]The hydroxyl value in oxidation product of rosin was high,showing there were more hydroxide radical during rosin oxidation.[Conclusion]To establish the determination method of hydroxyl value in the oxidation product of rosin is of help to deep processing of rosin.广西民族大学科研基金项

Study on The Purification Technology of Metallurgy Level Aluminum Hydroxide

系统研究了纯化冶金级Al(OH)3的工艺参数,通过对影响碱溶及纯化的因素进行试验,探索出碱溶除去Al(OH)3中晶间碱,获得Na2O含量<0.003%的低钠Al(OH)3的新方法,得出最佳工艺条件

含埋藏椭圆型裂纹的构件脉冲放电瞬间的耦合场分析

采用数值分析的方法,对含三维埋藏椭圆型裂纹的构件放电瞬间的耦合场进行分析。计算脉冲放电瞬间椭圆形裂纹尖端附近的温度场和等效应力场的分布状态;并通过改变模型尺寸的模拟分析影响放电参数的主要因素。计算结果表明,由于电流绕流产生的焦耳热源的作用,裂纹尖端处温度瞬时急剧升高,但沿椭圆形裂纹尖端的温度值并不相同,最大值发生在长轴附近,只要放电电流的强度足够大,可以使椭圆环形裂尖均熔化形成焊口,并围绕环形裂纹尖端附近产生很大的热压应力场,可有效地遏制裂纹的扩展;在相同放电电流强度下,对椭圆裂纹尖端温度影响较大的是裂纹的绝对尺寸和椭圆长短轴的相对尺寸。在研究过程中分成热—电耦合和热—应力耦合两个过程,综合考虑材料非线性、状态变化非线性和几何非线性,结果比较符合实际

Study on Oxidation of Styrene Catalyzed by Copper Complex of Disproportionated Rosin Amine Schiff Base

以H2O2为氧源,研究了歧化松香胺Schiff碱-铜配合物催化苯乙烯的氧化反应,探讨了溶剂种类、催化剂用量、氧化剂用量、反应温度及反应时间对催化氧化反应的影响。结果表明,催化氧化反应的较佳条件是:以1,4-二氧杂环己烷为溶剂,苯乙烯5.000 g,催化剂Schiff碱-铜配合物用量为苯乙烯质量的0.5%,质量分数为30%的H2O2 15 mL,80℃反应6 h。苯乙烯转化率为93.3%,主产物苯甲醛的收率和选择性分别为66.8%和71.7%。The performance of cupric complex of disproportionated rosin amine Shift base on catalyzing oxidation of styrene by H2O2 has been investigated. Factors affecting oxidation, such as solvents, temperature, reaction time, dosage of catalyst and the ratio of oxidant to alkene have been investigated. The optimum reaction conditions were： 5.000 g styrene with 15 mL 30 % H2O2 at 80℃ for 6 h in the presence of 0.5 % cupric complex in 1,4-dioxane. The conversion of styrene was 93.3 % , the yield and selectivity of benzaldehyde were 66.8 % and 71.7 %, respectively.国家民委科研基金资助项目(05GX03);广西高校人才小高地科研基金资助项目(无编号

高校化学师范生的教师素质培养

目前化学教育毕业生体现出没有足够的化学学科优势和明显的教师职业特点,就业难度加大,化学师范生的教师素质的培养有待提高,应针对教师能力与素质结构需要出发,建立灵活开放的系列课程及教学体系,全面发展化学师范生的教师素质.广西教育科学“十二五”规划2011年度立项课题(2011C0022);广西基础化学实验教学示范中心教学研究专项(编号Y15

超细改性AlOOH在PVC塑料中的应用研究

本文研究了超细改性AlOOH阻燃剂在PVC塑料中的应用效果,考察了阻燃剂含量对材料的阻燃和力学性能的影响.实验结果表明广西民族学院青年科研基金资助项

Exploration and Practice of Engineering Inorganic Chemistry Experimental Teaching Reform

根据工科无机化学实验课存在的问题,分别从5个方面探索了无机化学实验课的教学改革:一是更新优化实验内容;二是完善实验课程体系;三是改进实验教学方法;四是采用现代化教学手段;五是建立科学的实验考核办法.实践表明,通过改革大大提高了工科无机化学实验课的教学效果.According to the problems of Inorganic Chemistry Experiment, five aspects to explore reform of the teaching of inorganic chemistry experiment were discuessed：updated and optimized experimental content, improve the experimental curriculum system and teaching method, the use of modern teachingmeans and establish a scientific method to evaluation. The practice shows that, the reform greatly improved the inorganic chemistry experiment teaching effect新世纪广西高等教育教学改革工程立项项目(2012JGA129