甘油—乙醇混合液超声性质研究

测量了不同浓度的甘油、乙醇混合液的声速和密度,计算了超额绝热压缩系数.结果表明,在整个浓度范围内,甘油和乙醇之间存在着强烈的分子相互作用.     

Liquid-Liquid Equilibrium for 1-Butanol-Water-KF and 1-Butanol-Water-K2CO3 Systems

KF or K2CO3 was added into the 1-butanol-water system and two phases were formed： water-rich phase （water phase） and 1-butanol-rich phase （1-butanol phase）. The liquid liquid equilibrium （LLE） data for 1-butanol-water-KF and 1-butanol-water-K2CO3 systems were measured at 25℃ and showed that 1-butanol phase contained negligible salt and water phase contained negligible 1-butanol when the concentrations of KF and K2CO3 in the water phase were equal to or higher than 27.11% and 31.68% , respectively. Thus water could be separated efficiently from 1-butanol-water by adding KF or K2CO3 into the system. A theoretical calculation of LLE data was calculated by using the Pitzer theory to get water activity in the water phase, and by the models, such as the Wilson, NRTL or the UNIQUAC for the 1-butanol phase. For 1-hutanol-water-KF system, the experimental data were found in good agreement with the calculated results by using Pitzer theory and Wilson equa tion, while for 1-butanol-water-K2CO3 system, the experimental data were found in good agreement with the calculated results by using Pitzer theory and UNIQUAC eauation.     

剃齿时齿形中凹现象的形成机理

本文综合啮合原理、微分几何和弹性力学的基础理论,对剃齿过程中刀具齿面和被剃齿轮齿面间的失配进行了分析。最后利用径向力求出了齿面间的压切量,从而解释并验证了剃齿过程中产生的齿形中凹现象。这对提高剃齿精度、降低噪音有着重要意义。     

"权威"的出场--试论十七年文学批评中读者的实际功能和尴尬处境

读者批评是十七年文学中的一种特殊的现象，对读者的身份的定义必须结合当时的具体语境来考察，它是一个被界定和描述的概念．本文试图从这两个层面对读者身份概念的梳理入手，探讨读者在十七年文学批评中的实际功能，因为其既限制严格又宽泛多义的独特身份，使得读者在作为权威的延伸的同时，往往又成为文艺界决策者们用来规范文学的力量而被使用，虽然时代的更易也不能改变这种尴尬的处境。     

Distributed and Parallel Component Library

Software component library is the essential part of reuse-based software development. It is shown that making use of a single component library to store all kinds of components and from which components are searched is very inefficient. We construct multi-libraries to support software reuse and use PVM as development environments to imitate Iargescale computer, which is expected to fulfill distributed storage and parallel search of components efficiently and improve software reuse.     

西藏牦牛染色体的研究

应用外周血淋巴细胞短期培养法，结合Ｇ显带、Ｃ显带和Ａｇ－ＮＯＲｓ显带技术，研究了西藏耗牛的一般核型、Ｇ带、Ｃ带、Ａｇ－ＮＯＲｓ核型，并对耗牛的Ｙ染色体多态性进行了探讨．     

智能CAD／CAM技术对建筑机械业的影响

本文首先介绍ＣＡＤ／ＣＡＭ的产生及发展。然后谈ＣＡＤ／ＣＡＭ对建筑机械业的影响。本主独道见解是：ＣＡＤ／ＣＡＭ技术对建筑机械业影响巨大，一个全新的计算机辅助建筑工程制造ＣＡＥＭ概念将产生。当ＣＡＥＭ实现时，建楼房将象儿童搭积木房子一样轻而易举。“安得广厦万千间，使得天下寒士尽欢颜”梦想会成真。     

离散大系统的多级控制

本文使用反馈控制和广义逆矩阵研究离散大系统的多级控制问题,即在局部控制器上加所谓“校正”控制器,达到中性关联作用,使整个系统的性能指标为极小,且得到较小的性能指标偏差的上界。     

山东章丘明水地区二叠系“A”层硬质高岭土的研究

明水地区的硬质高岭土俗称焦宝石,即我国华北石炭二叠纪煤系地层申的“A”层铝土。明水地区的“A”层铝土具有耐火度高,化学成分稳定等特点,广泛用于日用陶瓷、电器、耐火材料等工业部门,是一种重要的工业原料。“A”层铝土在华北石炭二叠系煤系地层中分布普遍,层位稳定,其经济价值不低于煤,应当引起有关部门,特别是煤田地质勘探部门的重视。     

一种防空C~3I系统的效能分析方法

本文讨论了一种评定C~3I系统效能的方法。这种方法是根据系统完成使命的能力和系统的内部结构两方面的分析来完成的。通过对IFFN系统的评定,对本方法进行了举例说明。