锝的TBP萃取化学行为研究

报道了在硝酸体系中用３０％ＴＢＰ－正十二烷萃取Ｔｃ（Ⅶ）的实验结果。详细研究了硝酸、硝酸铀酰、硝酸铀（Ⅳ）、硝酸铵、亚硝酸钠、硝酸锆、硝酸钚、硝酸铈，亚硝酰钌、硝酸羟胺、硝酸肼浓度及温度、相比等因素对Ｔｃ（Ⅶ）萃取化学行为的影响。实验结果表明，在不含铀的硝酸体系中，硝酸、硝酸铵、硝酸钚、硝酸锆、硝酸铈、亚硝酸酰钌浓度及萃取温度对Ｔｃ（Ⅶ）的分配比影响很大，而亚硝酸钠、硝酸肼及硝酸羟胺浓度对Ｔｃ（Ⅶ）的分配比影响较小；在含铀的硝酸体系中，硝酸浓度对Ｔｃ（Ⅶ）的分配比有影响，而萃取温度、硝酸钚、锆的影响较小。Ｔｃ（Ⅶ）在含或不含铀的硝酸体系中，与ＴＢＰ分别形成ＵＯ２ＮＯ３·ＴｃＯ４·２ＴＢＰ和ＨＴｃＯ４·３ＴＢＰ萃合物。     

轧钢加热炉液压推钢机的设计应用

针对石横特钢一轧车间加热炉推钢机运行可靠性差 ,工作部件磨损严重、维修与调整工作量大等问题 ,对原机械式传动推钢机进行了改造。重点介绍了液压推钢机的传动原理及在设计过程中需要注意控制的关键问题 ,可供在同行业加热炉中借鉴。     

论英美刑法中被迫行为的人性基础--兼论我国刑法中的胁从犯

英美刑法中的被迫行为是指行为人在他人或环境胁迫下所实施的形似犯罪，但是根据一定条件可以进行合法辩护的行为。被迫行为作为一种可宽恕的辩护事由，有其科学合理之处。文章分析了英美刑法中被迫行为的成立条件及其存在根据，并分析了其对我国刑法中的胁从犯立法的借鉴意义。     

铅钙合金浇铸系统的机-电-液一体化设计

讨论了铅钙合金浇铸系统机械、液压与电器控制构成、工作原理及设计特点。     

基于C/S的工程设计智能化信息系统设计

本文探讨了工程设计流程智能化管理，指出了建立工程项目设计流程管理模型的方法，以及系统的详细分析与设计。     

锰硅合金冶炼渣型的研究与控制

简要论述了锰硅合金冶炼的渣型特征及其控制方法。     

Effect of Rare Earths on Corrosion Resisting Properties of Carbon-Manganese Clean Steels

Rareearthelementshavesignificantactionsinsteels ,includingwipingoffimpurityelements ,trans modifyinginclusions ,andimprovingmicrostructureetal,soaddingappropriaterareearthsintosteelscanef fectivelyimprovetheircorrosionresistingproper ties[1,2 ] .Todaypuri…     

Modeling and analysis of workpiece stability based on the linear programming method

After being located on a machine bed, a workpiece will be subject to gravity and cutting forces during the machining operation. In order to keep the locating precision as well as the production safety, it is necessary to maintain the workpiece stability. In this paper, a linear programming method is proposed for stability analysis of the workpiece. Based on the linear approximation of the friction cone, a quantitative criterion is established to verify the workpiece stability in association with the rationality of the clamping sequence, magnitude of clamping forces and clamping placement. This criterion allows designers to plan reasonably the clamping sequence, magnitude of clamping forces as well as clamping placement. Compared with existing methods, the main advantage of this approach lies in that the sophisticated computing of contact forces between fixture elements and the workpiece is avoided. In this work, both friction and frictionless cases can be easily taken into account in stability analysis. Mathematical formulations of the method are given and some numerical tests are finally demonstrated to validate the proposed method.