陶瓷厂房粉尘浓度检测仪的设计与分析

依据光强散射理论,采用后向散射法研制了一种新型陶瓷粉尘浓度检测仪.该检测仪利用新型光纤传感器分别检测不同浓度下的陶瓷粉尘样本浓度,通过实验得出了陶瓷粉尘浓度值与测量电压值呈线性关系.检测仪性能稳定、测量准确、性价比高,能够广泛应用于陶瓷生产中.     

陶艺莲花纹饰的符号学研究

本文以符号学理论为基础,以陶艺莲花纹饰为切入点,从历时和共时两个方面研究陶艺莲花纹饰的变化以及这种变化后面所隐藏的时代文化背景。莲花纹饰在各个不同历史时期都有鲜明的时代特征并不断变化着,通过分析与其符号变化相关的审美情趣、经济文化、制度文化等,本文最后总结出了莲花纹饰符号的五大特性。     

特殊人群弓形虫感染的研究进展

目的:了解特殊人群弓形虫感染情况.方法:查阅近几年来国内外有关文献资料,了解特殊人群弓形虫感染状况.结果:特殊人群弓形虫感染率较普通人群高.结论:特殊人群对弓形虫普遍易感,应加强防治.     

利用矩阵求二元一次不定方程的特解

借助矩阵求最简单的不定方程一组特解。     

Ceramic coating electric-deposited by high-energy pulse

A novel method to prepare ceramic coatings has been developed by making use of plasma energy produced from the pulsed discharge between electric conductor and aqueous electrolyte. A ZrO₂-8%Y₂O₃, coating was obtained by this method, which had excellent adhesion with substrate, smooth surface and good resistance to high temperature oxidation.     

ZnCr2O4湿敏陶瓷工艺研究

研究了ZnO不同含量对ZnCr2O4湿敏陶瓷线性度及LiCl,Al2O3,CaCO3掺杂对湿阻特性的影响。实验表明：增加ZnO的含量，可提高湿敏陶瓷的线性度；加入Ca^2 可提高湿敏陶瓷的机械强度，降低烧结温度。     

一种基于层分结构的应用程序保护策略

给出了一个应用程序的分层安全保护策略,并详细描述了基于FoxPro平台的设计思想和实现过程.     

铁路专业线路设计方案的相似优先比法决策及应用

本文结合某化肥厂铁路专用线方案的论证工作, 应用层次分析法和模糊数学理论, 系统地分析研究了铁路专用线设计方案的优选方法, 得出了铁路专用线设计方案择优评价及决策的一种方法。     

The Fundamental Definitions in Radar Measurement Principle and Theory of Space and Time

Fundamental definitions of distance and velocity in radar measurement principle are examined and revised from strict theoretical point of view. Synchronization scheme - for clocks in uniform, translatory relative motion is introduced as theoretical foundation for GPS and GLONASS type navigation and positioning technology. Traditional definitions of two-way radar measurement, based on arithmetic mean vlaue concept, turn out to be special cases of revised definitions for one-way radar measurement, based on geometric mean concept, derived from synchronization of moving clocks in accordance with the principle of relativity. The essential physical meaning of Lorentz transformation is interpreted in terms of radar measured parameters. Invariance or absoluteness of four dimensional interval turns out to be invariance or absoluteness of geometric mean time interval. The Lorentz factor turns out to be ratio of geometric mean and arithmetic mean time intervals in terms of radar measured parameters. Theoretical re     

反复熔铸对钴铬烤瓷合金抗腐蚀性能影响的研究

为研究反复熔铸对钴铬烤瓷合金抗腐蚀性能的影响,按照ISO10271标准,将钴铬烤瓷合金在真空加氩气保护环境条件下,分别经过1～3次反复熔铸,制成方形试样,采用静态浸泡实验,分别浸泡于pH=2.3的电解液中,37℃密封保存7 d.检测浸泡前后合金重量、表面粗糙度、表面自由能及浸泡液中析出的离子量,并观察表面形貌的变化.结果表明,经过1～3次反复熔铸的钴铬烤瓷合金浸泡前后失重率、粗糙度、表面自由能及析出的离子量差异均无统计学意义,提示反复熔铸对钴铬烤瓷合金抗腐蚀性能没有显著影响.