有机硫加氢(HDS)催化剂的预硫化

预硫化是HDS、HDN过程中决定催化剂活性的最重要环节。在分析催化剂硫化反应原理、硫化条件、硫化与还原的关系等基础上进一步指出了在工业过程中预硫化的一些原则。     

21世纪国外固体推进剂的研究与发展趋势

从5个主要发展方向分别评述了21世纪固体推进剂研究发展趋势,认为固体推进剂的发展趋势是朝着高能量、低特征信号、钝感、“洁净”和低毒或无毒的方向发展。     

Numerical Study of Solid-Liquid Two-Phase Flow in Stirred Tanks with Rushton Impeller (Ⅰ) Formulation and Simulation of Flow Field

Three-dimensional solid-liquid flow is mathematically formulated by means of the "two-fluid" approach and the two-phase k-ε-Ap turbulence model. The turbulent fluctuation correlations appearing in the Reynolds time averaged governing equations are fully incorporated. The solid-liquid flow field and solid concentration distribution in baffled stirred tanks with a standard Rushton impeller are numerically simulated using an improved "inner-outer" iterative procedure. The flow pattern is identified via the velocity vector plots and a recirculation loop with higher solid concentration is observed in the central vicinity beneath the impeller. Comparison of     

协同处置危废对烧成系统的影响

列举了水泥窑协同处置危废的特点和现状，阐述了水泥窑协同处置危废的过程中，危废对水泥窑烧成系统运行状况、熟料质量和烟气排放等的影响，并做了直接、深入的分析，根据实际运行情况提出了一些有效措施。     

The kinetics of B‐a and P‐a type copolybenzoxazine via the ring opening process

The structure of benzoxazines is similar to that of phenolic resin through thermal self‐curing of the heterocyclic ring opening reaction that neither requires catalyst nor releases any condensation byproduct. These polybenzoxazine resins have several outstanding properties such as high thermal stability and high glass transition temperature. To better understand the curing kinetics of this copolybenzoxazine thermosetting resin, dynamic and isothermal differential scanning calorimetry measurements were performed. Three models, the Kissinger method, the Flynn–Wall–Osawa method, and the Kamal method, were used to describe the curing process. Dynamic kinetic activation energies based on Kissinger and Flynn–Wall–Osawa methods are 72.11 and 84.06 KJ/mol, respectively. The Kamal method based on an autocatalytic model results in a total order of reaction between 2.66 and 3.03, depending on curing temperature. Its activation energy and Arrhenius preexponential are 50.3 KJ/mol and 7959, respectively. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 730–737, 2005     

Compatibilization and toughening of poly(2,6‐dimethyl‐1,4‐phenylene oxide)/polyamide 6 alloy with poly(ethylene 1‐octene): Mechanical properties,morphology, and rheology

Blends of a poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO)/polyamide 6 (PA 6) alloy toughened with a novel polyolefin elastomer poly(ethylene‐1‐octene) (POE) were prepared via melt extrusion. In order to improve the compatibilization between POE and the PPO/PA 6 alloy, POE was grafted with maleic anhydride (MA), which could react with the amine group of PA 6. The Izod impact strength of the blends exhibited an optimum when the extent of MA grafting of POE was changed, which is an order of magnitude higher than that of the untoughened blends. The morphology revealed that the size of the POE particles decreased with an increasing MA grafting ratio of POE. Studies on the tensile properties and rheology of the blends were also carried out. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 3110–3116, 2003     

超低水泥浇注料在宝钢环形加热炉炉底的应用

高铝质超低水泥浇注料在宝钢环形加热炉炉底使用结果表明，该浇注料具有热态强度高、结构均匀致密、耐磨损、抗侵蚀等特点。槽底厚度损耗比磷酸盐结合捣打制降低３５％左右。     

精确空投系统投放点确定的辅助决策模型构建

投放点的确定是精确空投系统任务规划中的重要内容,通过分析精确空投系统空投点确定流程,定义了系统投放可行域和投放可信域,给出了投放可行域的确定方法和投放可信域的确定模型,以及系统归航轨迹代价函数的表达式,通过计算归航轨迹的威胁代价优选投放点。     

基于FA/MR分析方法的徐州市大气颗粒物PAHs源解析

在徐州市布设3个采样点,进行大气颗粒物采样.通过因子分析法（FA）判断徐州市大气颗粒物中多环芳烃的主要来源,并利用多元逐步回归法（MR）确定各污染源对多环芳烃污染的贡献率.结果表明,徐州市大气颗粒物中多环芳烃的主要来源为交通污染源、燃煤污染源和高温加热源,贡献率分别为61.4%、20.5%和16.1%.     

混凝土受硫酸盐侵蚀的环境因素研究现状

硫酸盐侵蚀是水泥混凝土结构病害劣化的主要原因之一.海水、盐湖、地下水等环境中大多含有硫酸盐,混凝土组分本身也有可能带有硫酸盐,而它们在各种条件下对混凝土产生腐蚀作用,使其发生破坏.文章分析了阳离子、阴离子、硫酸盐浓度、温度、PH值、干湿循环及冻融循环、荷载作用等因素对混凝土受硫酸盐侵蚀的影响,综述了目前的研究现状,指出了当前研究成果中的成就与不足.