Yao Shouzhou , Zhou Tiean Department of Chemistry , Chemical Engineering
Abstract:用晶体振荡器研究了压电石英晶体在一系列有机液体与水混合体系中的振荡性能,确定:在此类体系中的晶体频移与纯有机液体或电解质水溶液中的晶体频移变化规律不一致,系与液体的密度、粘度及介电常数有关,符合下一通式:△F=c_1d~(1/2)+c_2η~(1/2)-c_3ε_0+c_0,但电导率无显著影响.检测池外壁接地可显著降低介电常数的影响并提高频率稳定性.温度对频移的影响与体系的含水量有关.
Xie Naixian , Huang yixiang Department of Chemistry , Chemical Engineering
Abstract:Based on experimental date, standard chemical potentials of some species in sulfur-dimethyl sulfoxide system have been calculated. Two kinds of electrochemical equilibrium diagrams, namely, the diagrams of electrode potential vs. pS and vs. logK_1 have be
Liang Benxi , Wang Changqing , Yang Youwen Department of Chemistry , Chemical Engineering
Abstract:本文对以水合肼作还原剂由癸烯酸制备癸酸的反应进行了研究.探讨了癸烯酸与水合肼的摩尔比;反应温度;反应时间;水合肼浓度以及溶剂的用量等五种因素对反应的影响.研究表明:在前述十二烯酸的反应条件下癸烯酸同样易被水合肼还原.在60℃下,用过量水合肼(摩尔比1:3.0)处理,并在不断搅拌下反应八小时,癸烯酸的氢化可达85%以上.表明在相当的条件下,癸烯酸和十二烯酸的氢化具有基本一致的结果.
Lui Jianhua , Chen Xingqi Department of Chemistry , Chemical Engineering
Abstract:In this paper, we introduce the "snake-cage" redox resin which is based on"717" strong-base anion-exchange resin (Chinese commercial product) and combined with the linear polymer of hydroquinone and formalin. The synthesis, redox potential and redox prope
Li Chuanqian , Bai Dongyuan , Li Qing Department of Mechanical Engineering
Abstract:In this paper, we study the influence of oil supply pressure, spindle rotation speed, spindle inclination and bearing discharge on the hydrostatic pressure bearing-spindle system.We also investigate the method for calculating the static functions of hydro
Zhong Changqin , Wang Jinning Department of Mechanical Engineering
Abstract:本文论述采用计算机辅助编码的必要性并阐述JLBM-1计算辅助编码系统的结构型式,该系统具有编码、改错、排序等功能.程序编制应用汉字BASIC语言,使用简便,经试用效果良好.软件适用于IBM-PC/XT型微型计算机.
Li Yifang , Liang Meifen Department of Mechanical Engineering
Abstract:本文对M12B型冲压机的机构尺寸进行了优化.在满足冲压机工作要求的情况下,使其四杆机构的最小传动角大于45°并保证其机构运转良好及效率高.
Chen Zaikang , Zhuang Damin Department of Environmental Engineerin
Abstract:Traditional methods for pridicting air flow performances usually depend upon the model experiments with decreased dimension, which are hard to satisfy all demands for similarity and unable to avoid the measure error. And therefore only approximate solutio
Wang Jiwei , Guan Yinglian , Jiang Zhongjin Department of Environmental Engineering
Abstract:本文以湖南省浏阳海泡石矿为原料,研究了原矿的脱色性能、制备活性土的工艺流程及有关活化条件.海泡石活性土脱色力高,处理植物油的脱色效果优于国内最好的白土,受到用户好评.
Li Xuetian Department of Electrical Engineering Wang Guangyi Binzhou Teacher''''s College , Shandong Province
Abstract:As we know, the node method or loop method can be used for analysing the networks containing nullars. In this paper, a systematic method is developed for analysing complicated nullar-networks, especially for satisfying the need of CAA.
Wang Xuanmin , Hong Fanwen , Yang Fukang Department of Civil Engineering
Abstract:In this paper, a new method (rotation ratio method) is developed for analysing the frame subjected to a lateral load. Based on the inflection point of beams, rotation ratio of nodes in same story are introduced so that the unknown parameters of angular di
Wang Lei Department of Engineering Mechanics
Abstract:In this paper, Hu Haichang's differential equation and its boundary conditions for plates with three generalized displacements are employed and the method of weighted residuals is used. Three trial functions are thus pre sented: 1) beam function; 2) Levy
Peng Jingcui Department of Physics
Abstract:利用一个简单的连续模型去研究聚丁二炔的结构相变,对于其中的σ电子和π电子分别处理.在聚丁二炔链上,当出现从PDB相向PDA相转变时,会出现一个畴壁和反畴壁,这个相变的出现主要是由于π电子重新分布的结果.我们把畴壁(反畴壁)当作元激发来处理,详细分析了相变过程,计算了畴壁(反畴壁)的结合能,成功能解释了如下的实验事实:在低温下PDA相比PDB相更稳定,并且会自发地发生从PDB向PDA的相变.
Yang Bingzhang Department of physics
Abstract:The infrasonic vibration generator is established on the principle or beat frequency. Starting from this principle, we study the frequencies of two pairs of special forks and find that there exists an infrasonic frequency function between the forks. So on
Vol. 15, No.1, 1988
