评我国矿用防爆产品发展现状

分析了1988—1989年间国产的防爆产品中有一定技术难度的新产品较少,应淘汰的老产品被大量扩点生产,反映了科技规划和管理的混乱。为使我国矿用防爆产品能健康发展,提出了若干设想。     

熔体的粘度，亚稳相，相变和相图——Ⅲ．合金液相相图

对Sn（x）Bi（1-x）11种组分（x=0.10％，20％…80％，90％，100％）的熔体的粘度进行了测量，给出了它们的相变点Tt，相区和相参数；根据这些参数作出了一个二元合金液相相图；为了表明相区的划分和每个相区的结构特征提出两种相图的形式；第1，温度一组分（T-X）图，第2，结构-组分（df-x）图。     

MS方法的一个新证明及其结构优化算法

本文给出Ｍｉｌｎｅ－Ｓｉｍｐｓｏｎ（ＭＳ）预测─校正法新的导出方法，并以结构优化思想设计出通用性和可靠性较强的算法。     

Effect of fiber types on relevant properties of porous asphalt

The research was conducted to evaluate the effects of cellulose and polyester fibers on the properties of porous asphalt mixes, using the tests of draindown, abrasion, volumetric properties, rutting, and moisture damage. Images of scanning electron microscopy and X-ray computerized tomography were adopted to identify the microstructure of the fiber and inner stone skeleton of porous asphalt. The influence of rutting parameter （G＊/sin δ） of asphalt modified by different fibers on the rutting resistance of the mixes was investigated. Based upon MOHR-COULOMB theory, the cohesion and the angle of internal friction of the mixes were derived from both indirect tension and unconfined compression strength. The experimental results indicate that fibers mainly stabilize asphalt binder and thicken asphalt film around aggregates. Furthermore, they result in the improved mechanical strength of porous asphalt mixes at high temperature slightly. From comparison analysis, cellulose fibers appear to perform better than polyester fibers in porous asphalt mixes.     

化学教学中创新能力的培养

创新是一个民族进步的灵魂,是国家兴旺发达的不竭动力。创新成果的获得有赖于有创新能力的人,而有创新能力的人必须依靠创新教育来培养。创新教育对教师的教学观念、教学     

基于模拟试验法的离散公差稳健设计

 在分析计算机辅助公差设计技术的研究现状的基础上，提出了基于模拟试验法的离散公差稳健设计方法．在该方法中将加工成本与质量损失作为两个独立的目标函数，从而建立离散公差优化设计模型，采用试验设计法和CP方法相结合的技术实现公差的稳健设计，最后用实例证明该方法的可行性．