Summarization of Current Research on Application of Durability of Structures

This paper summarized the recent research results about the durability of structures, introduced their current application in durability design, appraisal, estimation of rest life and strategy of maintenance and strengthening as well as in other fields.     

Microstructures, Reaction Kinetics and Properties of Reaction Between Magnesium and Silica Glass

In earlier calculation models,the stiffness centers in frame-shear wall structures have been located by the structural torsion stiffness.However,the results are illogical owing to the difference between the distortion character and the shears distribute mechanism of the frames and shear walls.In this paper,a new formula for calculating story stiffness is introduced,which can consider the stiffness of the frames and shear walls at the same time.The structural stiffness centers,the torsion eccentric distances and torsion effect are calculated,and the stiffness of elements is considered also.It is shown that the concept of the presented stiffness model is clear and the results are reasonable,which can be used to calculate the appreciative torsion effect.     

Internet Telerobotics and Its Applications

According to a new trend of telerobot control, some key techniues are researched to solve the Internet telerobotics , such as distributed intelligent computation on the Internet, human-computer interface,and Internet-robot interface etc.The current development status of the Internet telerobotics is reviewed. Based on the new directions of the network software development, the authors discuss that the middleware technique CORBA plays an important role in solving the problems of the Internet telerobotics,and it is an effective way to use Java language to control the telerobot and improve its system performance. The application perspective of the Internet telerobotics is investigated.It is indicated that the development trend of the telerobot control is a human-centred collaboration mechanism of mutual reinforce and coordination in human-machine intelligent.     

高含沙水流水轮机转轮的改型与抗磨蚀研究

进行高含沙水流水轮机转轮的改型研究，关键是要从正确确定转轮设计参数和轴面流道型式入手，根据三维水力设计理论，考虑导叶与转轮匹配关系进行叶型设计，针对不同破坏机理选择强磨蚀区采用金属喷涂或非金属保护等综合措施，使水轮机在高舍沙水流中运行时出力增加、抗磨蚀能力提高。     

杨凌区降雨对作物生长适应性的模糊分析

依据模糊数学理论 ,采用模糊综合评判方法 ,从降雨“适量”、“适时”和“有效程度”3个指标出发 ,就杨凌区降水资源对农作物生长发育适应性做了评价分析 ,并提出降雨对作物生长的适宜度模型。通过实地调查与计算分析 ,该模型较好地反映了杨凌区主要作物对该区降雨特征的适宜能力 ,同时也较好地反映了本区降雨资源的地域特征 ,为该地区农作物合理布局决策提供了科学依据     

海南不同地区香蕉假茎象甲对几种杀虫剂的敏感性测定

采用虫体浸渍法，测定了海南澄迈和儋州两地的香蕉假茎象甲成虫对480克/升毒死蜱EC、77.5%敌敌畏EC、40%辛硫磷EC、40%丙溴磷EC、25%丙溴?辛硫磷EC、20%三唑磷EC等6种杀虫剂对的敏感性。结果表明，6种药剂对澄迈和儋州两地区的香蕉假茎象甲的毒力大小顺序相同，毒死蜱＞丙溴?辛硫磷＞丙溴磷＞三唑磷＞敌敌畏＞辛硫磷；儋州地区的香蕉假茎象甲对6种药剂的敏感性均高于澄迈地区。     

用单克隆抗体结合酶联免疫吸附试验检测棉铃虫幼虫体内的核多角体病毒

在常规ＥＬＩＳＡ间接法的基础上，应用单克隆抗体检测感染棉铃虫核型多角体病毒的棉铃虫幼虫体内病毒粒子。３龄幼虫饲喂表层涂有ＨａＮＰＶ人工饲料后９小时，即可在幼虫抽提液中检出病毒粒子抗原，而典型病虫显症需５～６天后才出现。因此本法是一种灵敏、快速、特异性强的检测昆虫杆状病毒的方法。利用单克隆抗体结合ＥＬＩＳＡ试验分别检测来自江苏和山东不同地区棉田自然死亡的棉铃虫幼虫，表明在江苏和山东不同棉区均可检测到ＨａＮＰＶ病毒粒子，但地区间棉铃虫核型多角体病毒检出频率有显著差异     

曹典球的近代商战、学战思想与实践

根据新发现的史料 ,结合以往的研究文献 ,集中论述曾两任湖南大学校长的曹典球 ( 1877～ 196 0 ) ,对于湖南近代“商战”、“学战”具有系统的思考和实践 ,是一位杰出的先行者     

多硫化钡制剂分析方法研究

本文介绍了用多硫化钡制剂试样加水振摇，加热回流后过滤，滤液用碘量法分别测定可溶性钡和多硫化态硫的含量，扣除硫代硫酸态钡的干扰，即以多硫化态钡与多硫化态硫的含量和之作为制剂有效成分含量的多硫化钡制剂分析方法。     

甲壳动物保幼激素的研究

近年来，在甲壳动物大颚腺中发现了一种具有保幼激素活性的物质——法呢酸甲酯（MF），它是一昆虫保幼激素Ⅲ（JHⅢ）结构相似的一种倍半萜类化合物，对甲壳动物的生长、发育和繁殖有重要调控作用，而MF的分泌受到眼柄等因子的负调节作用。