新型倾斜板技术制备半固态铝合金坯料和浆料

采用自行设计的波浪型倾斜板,在斜板冷却条件下制备了组织和触变性能优良的半固态合金坯料。而在斜板加热条件下制备出了组织优良的半固态合金浆料。在采用波浪型的倾斜板制备半固态合金过程中,在熔体爆发形核与枝晶破碎的共同作用下,形成了细小球形的半固态合金组织,浇注温度、冷却强度、斜板倾角和斜板表面材质是影响半固态合金组织的主要因素。得出了本试验条件下制备AlMg3合金半固态坯料的浇注温度范围为660~690℃;制备AlSi6Mg2合金半固态坯料的浇注温度范围为660~680℃;制备AlSi6Mg2半固态合金浆料的合理工艺条件为:斜板预热温度为300℃时,合金浇注温度为680℃。     

The establishment of the statistical-thermodynamic model of D81-structure and its application to α-Nb5Si3

A statistical-thermodynamic model for binary nonstoichiometric A₅B₃ with D8₁-structure has been established on the basis of the grand canonical ensemble. In the model the average chemical potentials according to the composition and a new extra equation as a boundary condition are proposed for more accuracy and free experimental data calculations. The model can be used in any A₅B₃ type compounds with D8₁ structure. The establishment method of the statistical-thermodynamic model can be extended to other complicated structures. We apply the statistical-thermodynamic model to α-Nb₅Si₃ and the parameters used in the model are obtained from the first-principles' calculations. From these parameters the expression for the point defect concentrations as a function of compositions and temperatures is obtained by numeral calculations. The constitutional defects and thermal defects in α-Nb₅Si₃ are discussed.     

β-萘乙醚的合成中催化剂应用进展

β-萘乙醚是一种合成香料,广泛用于生产香皂、化妆品和洗涤剂等行业中,还可以作玫瑰香、柠檬香等香料的定香剂.综述了酸性催化剂、碱性催化剂和相转移催化剂等催化合成β-萘乙醚的方法.并对各催化剂的性能、优缺点进行了分析.通过比较发现与其它催化剂相比,使用固载相转移催化剂来合成β-萘乙醚具有反应条件温和,反应时间短,产率高,操作简单,不污染环境,而且易回收并能够重复使用,具有较好的应用前景.     

固体超强酸合成乙酸丁酯

本文讨论了固体超强酸催化剂合成乙酸丁酯的方法，比较了各类固体超强酸的优劣，为工业化生产乙酸丁醋筛选超强酸催化剂提供极具价值的参考依据。     

流程生产的可视化整合和多目标优化软件

针对现代企业所面临的挑战，开发了一个软件系统可以根据市场的动态变化和企业内部的设备状况，优化设备配置、优化原料和产品方案。采用可视化形式实施仿真运行和经济效益分析预测。     

Enhanced Visible-Light Photocatalytic Degradation of Humic Acid by Palladium-Modified Nitrogen-Doped Titanium Oxide

Palladium-modified nitrogen-doped titanium oxide (TiON/PdO) nanoparticles were synthesized by a sol–gel process, for visible-light-induced photocatalysis using humic acid (HA) as a target. Our work shows that palladium modification has strong effects on the optical and photocatalytic properties of nitrogen-doped titanium oxide (TiON) photocatalysts. TiON/PdO nanoparticles demonstrated an enhanced photocatalytic activity over TiON within a narrow range of palladium concentration. Beyond this range, the adverse effect of palladium modification was observed in the visible-light-induced degradation of HA. The effects of palladium modification are discussed in terms of its role in controlling electron–hole recombination.     

《无机及分析化学》在多媒体教学的应用及思考

对多媒体技术在无机及分析化学教学的应用进行了，阐述和分析，指出使用多媒体教学应注意的问题。     

空心玻璃微珠复合聚氨酯泡沫的模塑成型收缩率

研究了用空心玻璃微珠复合聚氨酯泡沫塑料制成厚度不同、形状不同、结构不同的制品时模型成型的收缩率，以及在模塑成型过程中，熟化温度、熟化时间和熟化后在模具内保持的时间对模塑成型收缩率的影响。结果表明，制品模塑成型收缩率随着厚度的增加而增大；加入金属嵌件后可较大程度地限制制品收缩；当熟化温度高于100℃时，随着熟化温度的升高，制品收缩率增大。     

Ca-P仿生人工骨材料的设计与制备

本文设计了用磷酸钙生物陶瓷制备仿生人工骨的工艺路线 ,从原料合成、材料成型和烧结等讨论了仿骨材料的制备方法     

Water Bloom Precursor Analysis Based on Two Direction S-Rough Set

In the field of water quality management, it is vital to determine the main precursory anomalies from the precursor of intricate water bloom in the context of a given area. In this paper, a water bloom precursor analysis method, based on two direction singular rough set, was proposed. This approach was produced on the basis of the different sections and pre-water bloom of water bloom precursor anomalies and characteristic of elements transferred in singular rough set. For testing the validity of two direction singular rough set application in water bloom precursor analysis, Xiangxi River, which is one of the typical tributaries of Three Gorges Reservoir in China, was selected as study area. The result showed that compared with other indexes, pH and dissolved oxygen (DO) are the most valuable indicators of water bloom in the precursory anomalies. Furthermore, regarding with water bloom precursory anomalies in Xiangxi River, most of the nutrient loading and biological community are the key indicators. Hence, this method can determine the main precursory anomaly for water bloom in the study area, which provides powerful knowledge support to water quality specialists for them to comprehensively analyze precursory anomaly so as to find out its relationship with occurrence law of water bloom.