BaCO3和SrCO3对水泥生料固硫行为的影响

针对水泥窑工艺，以合山东矿煤和贵州六盘水煤为研究对象，水泥生料为固硫剂，BaCO3和SrCO3为添加剂，进行燃烧固硫的试验研究，在讨论添加剂对水泥生料固硫效率影响的同时，借助XRD测试手段研究BaCO3和SrCO3对灰渣产物矿相组成的影响规律，并结合灰渣扫描电镜分析，探讨高温段添加剂对水泥生料的固硫效果的作用机理．结果表明：水泥生料中添加BaCO3和SrCO3后，在较低温度下促使SOx的析出量增加，水泥生料固硫效率降低．但是随着温度的升高，添加剂的加入，促使灰渣结构更为密实，从而更好地抑制CaSO4的高温分解，固硫效果改善．其中钙与添加剂的质量比为7时效果最好，但对于不同煤来说，最佳添加剂比例不同．     

Study on molecular interaction between NifA and NifL of Pseudomonas stutzeri A1501 by using the yeast two-hybrid system

Pseudomonas stutzeri AI501 (formerly Alcaligenes faecalis A1501), which was isolated from rice paddies in South China in 1980, can colonize tightly on rhizoplane of the host plants or invade the roots of plants for growth and nitrogen fixation. But A1501 can fix nitrogen only under the micro-aerobic and nitrogen-free conditions. The oxygen concentration and the availability of fixed nitrogen are therefore important factors in the regulation of nitrogenase biosynthesis of associative nitrogen-fixing bacteria.     

四重马氏平稳过程的非线性预测问题

假设{X（t），t∈R^1}是由广义Wiener随机积分所定义的四重马氏平稳过程．如果该随机过程{X（t），t∈R^1}被一有界Borel可测函数f（＊）变换，则得到新的随机过程，记为Y（t）=f（X（t））．作者在本文中，首先粗略地研讨了四重马氏平稳过程{X（t），t∈R^1}及其均方导数的一些概率性质．其次，对于一些构造较简单的Borel可测函数f（＊），较详细地探讨了随机过程{Y（t）=f（X（t））}的非线性均方预测问题．     

双层聚合物发光器件中的输运特性研究

基于载流子电导是空间电荷限制与空间电荷在器件内部指数减小的假设,通过引入电荷空间分布的特征长度及有效迁移率,并考虑注入电流为热电子电流和隧穿电流,由此对器件的输运特性进行了详细讨论.结果表明电荷空间分布的特征长度对器件中的载流子浓度、电场强度及电流有很大影响;器件功能层厚度对器件的电场强度影响较大,对器件I-V特性影响不大.     

《大型机组振动与平衡》双语教学的实践与思考

通过总结《大型机组振动与平衡》课程双语教学的教材选用及教学内容、授课方式及手段、教学效果等,思考双语教学的一些问题,力求对深化双语教学改革进行有益的探索.     

个人所得税收入分配效应的模型分析

通过分析征税行为对征税前后的基尼系数的影响,讨论了个人所得税的收入分配效应.结论是只有当税赋基尼系数大于税前基尼系数时,征收个人所得税才能对收入分配起到调节作用.     

泥石流灾害及防治

2006年2月17日．菲律宾中部南莱特省圣伯纳德镇发生泥石流灾害，吞没了一个村庄和一所学校，大约2000人在此次泥石流灾害中失踪。灾难震惊了全世界。实际上泥石流灾害是一种在全球山区都较为常见的山地灾害．每年都要造成不同程度的人员伤亡和财产损失。     

Materials informatics and study on its further development

NOWADAYS,WITH THE DEVELOPMENT OF MATERIALS SCI-ENCE AND TECHNOLOGY AND WITH THE CONTINUOUS EMER-GENCE OF NEW MATERIALS,TECHNOLOGIES,PROCESSES AND METHODS,PROLIFERATION AND COMPLEXITY OF MATERIAL SCI-ENCE DATA HAVE INCREASED ENORMOUSLY.THEREFORE,DIFFI-CULT…     

Experimental study to confirm the existence of hydrocarbon under high pressure and temperature of deep lithosphere

Previous studies indicated that the existence of over- pressure in sedimentary basins not only affects the as- sessment of oil and gas resources, but also closely re- lates to the accumulation and preservation of petroleumin deep reservoirs[1,2]. It is well known that there are more than 180 overpressure basins in the world. Be- cause fluid pressure is transient in sedimentary basin over geologic time, the effect of increasing pressure on organic matter metamorphism is difficult to determine, …     

Preparation and characterization of aligned carbon nanotubes coated with titania nanoparticles

Titania (TiO2) is an environmental-friendly photo- catalyst material with high stability and efficiency, so its preparation methods received extensive atten- tion[1―4], and the products were advanced from dis- persed nano-powder and fastness nano-film[5,…