直接空冷排汽管道系统的优化设计

依托实际工程,利用计算流体力学(CFD)软件对某台135 MW机组直接空冷排汽管道内的水蒸气流场进行了三维数值模拟,经分析和研究,实现了空冷排汽管道系统的优化设计.     

“Lattice Strain Matching”-Enabled Nanocomposite Design to Harness the Exceptional Mechanical Properties of Nanomaterials in Bulk Forms

Nanosized materials are known to have the ability to withstand ultralarge elastic strains (4–10%) and to have ultrahigh strengths approaching their theoretical limits. However, it is a long-standing challenge to harnessing their exceptional intrinsic mechanical properties in bulk forms. This is commonly known as “the valley of death” in nanocomposite design. In 2013, a breakthrough was made to overcome this challenge by using a martensitic phase transforming matrix to create a composite in which ultralarge elastic lattice strains up to 6.7% are achieved in Nb nanoribbons embedded in it. This breakthrough was enabled by a novel concept of phase transformation assisted lattice strain matching between the uniform ultralarge elastic strains (4–10%) of nanomaterials and the uniform crystallographic lattice distortion strains (4–10%) of the martensitic phase transformation of the matrix. This novel concept has opened new opportunities for developing materials of exceptional mechanical properties or enhanced functional properties that are not possible before. The work in progress in this research over the past six years is reported.     

PTA装置扩产氧化母液罐挖潜——搅拌器改造

上海石化0.4 Mt/a PTA装置扩产改造中,TJ-302氧化母液罐处理量不能满足需求,需要大幅度加快循环速度,在原有设备上增设搅拌器是最经济的选择。增设搅拌器后,又出现新问题,由于循环速度加快,设备中原有的固体含量增加,必须进行再改造。经充分的分析研究以及计算,增设了罐内轴滑动轴承,从而解决了上述问题。     

羟基锡酸锌包覆埃洛石对PVC/ABS共混物阻燃性能的影响

采用均匀沉淀法制备了羟基锡酸锌(ZnSn(OH)6)包覆埃洛石纳米管(C-HNTs)。利用X射线衍射仪、透射电子显微镜分析了ZnSn(OH)6与HNTs的质量比对包覆物体相结构的影响。结果表明,当ZnSn(OH)6与HNTs的质量比为1∶10时,ZnSn(OH)6能够较均匀地包覆于HNTs的表面。利用氧指数测试仪、锥形量热仪、热重分析仪研究了CHNTs对聚氯乙烯(PVC)/苯乙烯-丙烯腈-丁二烯共聚物(ABS)共混物的阻燃性能和热稳定性的影响。结果表明,CHNTs能明显改善PVC/ABS共混物的阻燃和抑烟性能,其极限氧指数达到36%,发烟速率仅为PVC/ABS共混物的51%。添加4phr C-HNTs后的PVC/ABS共混物在850℃的炭残余量提高了14.06%,而对力学性能影响不大。     

利用卫星对明安图射电频谱日像仪的相位校准研究

明安图射电频谱日像仪采用综合孔径技术成像的太阳专用射电望远镜,为充分利用望远镜天线单元数量,采用非冗余基线设计,这就要求需要外部信号源进行系统校准.本文介绍了利用同步轨道卫星作为校准源,对明安图射电频谱日像仪进行相位校准的原理,过程和相应的观测结果,分析了卫星作为校准的优缺点、处理办法以及在对图像质量的影响.     

均苯四甲酸二酐的生产及其在涂料工业中的应用

简述了均苯四甲酸二酐任涂料工业中的主要用途。介绍了均四甲苯法、偏三甲苯烷基化法、一氧化碳法等均苯四甲酸二酐的生产方法，对各种生产方法进行了评述，同时对我国均酐生产提出了一些合理化建议。     

水夹点分析与用水网络优化设计方法

水夹点技术作为一种有效的优化方法在用水网络优化、水源节约及废水减量等方面应用,能收到良好的经济效益和环境效益.作者介绍了水夹点技术的基本原理、应用实例以及进一步网络优化设计方法.     

The cluster size transformation model of molten alloy under pulse electric field

Based on the electric dipole theory, the coupled field distribution of pulse electric field (PEF) with electric dipole field around the cluster in superheated molten alloy is simulated under the effect of PEF. For the difference of electro-migration, the atom of solute and solution will accumulate around the cluster, and then the smaller cluster may reorganize and grow up under the action of the coupled field. We also apply the electrostatic induction theory to analyze the bearing behavior of the half side of the cluster. The bigger the cluster is, the stronger the electrostatic force is, therefore, the bigger cluster’s stability is weak apparently. The study indicates that the cluster in the superheated molten has the homogeneous tendency under the effect of PEF. Supported jointly by the National Natural Science Foundation of China (Grant No. 50674054), and the College Key Laboratory Open Fund of Liaoning Province (Grant No. 200516203)     

钢铁制造业环保节能的新理念、新方法和新技术

介绍了国内外钢铁制造业环保节能的新理念，新方法，新策略和部分新技术。     

基于校园私有云的实训教学环境的应用研究

针对高职院校现有的计算机实训室中,计算机实训机房管理中的资源分配复杂、利用不高、运维成本高等问题,采取基于校园私有云的方式来构建实训教学环境,使得实训教学环境高可用、自动交付.最后通过效果分析,验证所构建的环境平台是可行和有效的.