非化学计量LaNi5型储氢合金的性能

采用富La混合稀土与Ni、Co、Mg等元素组合，获得了一种非化学计量LaNi5型储氢合金、用金相、XRD和SEM-EDX等方法分析了该合金的组织结构，研究了合金的气相储氢特性以及电化学性能，结果表明：在1.6MPa氢压和温度29℃下，该合金的储氢量达到1.58%（质量分数），该合金的放电容量为380mAh/g。经300次循环后容量保持率为55%，该合金的基体是CaCu5型结构的LaNi5相，但有第二相（LaMg)Ni3析出，这种第二相的形成是导致该合金大容量的关键。     

消除非合金奥贝球铁中锰偏析的工艺

研究了消除非合金奥贝球铁中锰[w(Mn)=0.8%]偏析和不利影响的工艺措施。通过增加硅含量，强化孕育处理，降低奥氏体化温度及等温淬火后进行回火处理等措施，均可消除锰含量增高对组织和性能的不利影响。     

南水北调工程与管理

随着南水北调规划论证工作的深入，管理正成为南水北调工程的一个约束性课题。南水北调工程的建设管理应以各方利益的均衡为基础，投资分摊应适应公司化运作的建设管理体制，管理中应广泛借助外部力量；南水北调工程未来的运营管理必须结合建设提前考虑，在事权划分明晰的基础上，以现代科技手段为保障的合同化管理将是有效的手段。     

平纹织物复合材料的弹性模量预测

利用细观力学的代表体积元(RVE)法,预测了平纹织物复合材料的弹性模量。建立了表征RVE形态的数学模型,分析了细观结构与宏观性能之间的关系,编制了从组分材料的弹性性能推测复合材料的弹性性能的预测程序。对理论预测进行了实验验证,理论值与实测值在一定误差范围内能较好吻合,说明此预测方法具有一定的可靠性。     

溶聚丁苯橡胶聚合溶液粘度的研究

研究了（乙二醇二甲醚、二乙二醇二甲醚）－正丁基锂－抽余油体系地溶聚乙苯橡胶不同聚合时间聚合溶液粘度的变化，发现聚合溶粘度与活性种的活性有关，高温严重破坏活性种的活性，计节剂量是杀死活性种活性的另一因素。同时考察了不同苯乙烯／丁二烯（S／B）体系，正丁基锂引发剂用量对聚合粘影响规律，发现S／B越大，聚合粘度越小，S／B越小，聚合粘度越大，引发剂用量减少，聚合液粘度增大。     

Ni-Mo-O催化剂中协同作用对丙烷氧化脱氢的影响

在 Ni-Mo-O体系中 ,加入 Mo O3 能极大地提高丙烷氧化脱氢制丙烯的反应活性。选用固混法、沉淀法、柠檬酸法制备了 Mo O3 过量 1 5 % (摩尔分数 )的α -Ni Mo O4催化剂 ,其中用沉淀法制得催化剂在 5 0 0℃ ,V( C3 H8) /V ( O2 ) /V ( N2 ) =1 0 /1 0 /5 0 ,反应气流量为 70 m L/min的条件下丙烷转化率可达 38.7% ,丙烯选择性达 70 .1 4 %。经 XRD,XPS,TPR表征说明 ,在含有过量 Mo O3 的催化剂中 ,α -Ni Mo O4与 Mo O3 两种晶体之间可产生微小的相互吸引 ;从而发挥协同作用 ,是提高催化剂活性     

In—situ Composite Based on Poly （ethylene terephthalate）,Polyamide and Polyethylene with Microfibres Formed through Extrusion and Hot Stretching

In-situ composites based on dispersed poly (ethylene terephthalate) (PET) or polyamide (PA),and continuous Polyethylene (PE) were prepared through a single screw extruder of Haake rheometer system with a rod-die relatively small in diameter.The extrudate was drawn at a drawing ratio of 3.1,and then quickly cooled in cold water.The specimens were obtained by injection molding at processing temperatures less than 190℃，far below the melting temperature of PET (265℃) and PA (230℃),which can maintain the solid state of PET and PA microfiber phase in the composites.Morphological observation with scanning electron microscopy (SEM) indicated that PET and PA can more or less form in-situ microfibers at compositions studied (0-20 wt pct PET or PA),and especially,PET and PA were almost deformed into fibers at the concentration of 15wt pct.Eensile strength and especially.PET and PA were almost deformed into fibers at the concentration of 15wt pct.Tensile strength and modulus of the blends reinforced by PET or PA microfibers showed to be increased from the tensile test results.The most noticeable improvement of the tensile properties occurred at 15wt pct of PET in PET/PE system,corresponding to the highest microfiber content,where the tensile strength reached 32.5 MPa,whereas only 19.5 MPa for the pure PE.     

浅谈降低岩土施工成本的几点意见

通过正确分析岩土施工成本的价格体现和存在问题 ,对实现成本效益做出科学评价 ,并提出降低岩土施工成本的途径     

Parallel Pattern-Based Systems for Computational Biology: A Case Study

Computational biology research is now faced with the burgeoning number of genome data. The rigorous postprocessing of this data requires an increased role for high-performance computing (HPC). Because the development of HPC applications for computational biology problems is much more complex than the corresponding sequential applications, existing traditional programming techniques have demonstrated their inadequacy. Many high level programming techniques, such as skeleton and pattern-based programming, have therefore been designed to provide users new ways to get HPC applications without much effort. However, most of them remain absent from the mainstream practice for computational biology. In this paper, we present a new parallel pattern-based system prototype for computational biology. The underlying programming techniques are based on generic programming, a programming technique suited for the generic representation of abstract concepts. This allows the system to be built in a generic way at application level and, thus, provides good extensibility and flexibility. We show how this system can be used to develop HPC applications for popular computational biology algorithms and lead to significant runtime savings on distributed memory architectures.     

我国核工业废放射源安全管理

废放射源易于在管理上失去控制，从而酿成事故，对人类和环境造成危害。本文分析了我国废放射源产生的原因，介绍了我国核工业废放射源的现状与安全管理的技术路线和策略，提出了当前所面临的主要问题。