“凯华电源”：走过风雨 继往开来

1991年，侯耀华开始从事直流电源开关柜的开发、研制工作。实践出真知，在这个广阔的领域，一次次的风雨冲刷，使侯耀华由一只展翅欲飞的雏鹰成长为历经风雨的雄鹰。1998年底，上海凯华电源成套设备厂陷入困境，帐面资金仅有10万余元，却要补缴350万元的税金。“凯华厂”以往的客户心存疑虑，有的举棋不定，有的静观其变，有的退出与“凯华”的合作关     

厂拌法拌刚性稳定层的施工方法与工序控制

厂拌法是公路基层施工建设的方法。本文对此方法作了详实的论述,将材料要求、施工前各个环节的准备工作、施工过程的工序控制以及后期养生等内容一一介绍。     

城市污水厂剩余活性污泥农用价值分析

分析了目前国内外污水污泥处置、利用、管理的现状和发展趋势，通过对城市污水处理厂剩余活性污泥成分、利用风险以及污泥农用市场的分析，综合评价了经过无害化、稳定化处置后剩余污泥的农用价值。     

浮选厂自学习咨询控制专家系统知识库设计

分析了影响浮选厂生产过程各因素的因果关系．根据浮选知识的特性提出了规则／框架表示法，设计了相应的知识库．该方法能自然、完整地表示浮选过程的知识，又便于知识库的维护     

电力系统厂站及调度自动化现状与发展

本文结合我国电力系统厂站及调度的现状,探讨了我国电力系统厂站及调度自动化的发展趋势。     

XIK厂修相关问题及解决办法的研究

X1K型集装箱专用平车经过车体增裁改造．新型空重车自动调整装置改造，转K3型转向架轴箱改进后，裁重由50t提高到61t，能够满足装运2个箱重为30．48t的20ft国际标准集装箱的要求，保留装运一个40ft或45ft国际标准集装箱的装载工况。目前该车型已陆续进入厂修期，鉴于各兄弟单位相继进行该车型检修，我把沈车公司检修过程遇到的问题及整改措施整理出来，以备同行们参考。     

研究和分析消防应急救援主体

本文主要探讨了什么是消防应急的救援主体,然后对目前我国关于消防的应急救援主体在法律和规定方面进行了简单的梳理,在此基础上分析了炼化厂消防应急现状,指出其中存在的一些不足。     

甘肃老金厂金矿床地质特征及找矿方向

进入21世纪以来,随着现代成矿理论的飞速发展以及新技术的成功利用,甘肃省老金厂金矿区进行了新的一轮找矿工作,主要进行的是1/5万矿产地质调查工作,发现了一大批异常区和有望找矿区段,同时,对一些老矿区也有了新的认识。本文主要谈谈老金厂金矿床地质特征及找矿方向。     

基于SLP的波纹管厂布置设计研究

本文根据波纹管厂的产品组成、产品产量、工艺流程、辅助服务设施、时间约束等等各个方面信息对企业的设备、物料以及人员所需空间等进行合理分配布置和有效地组合。采用系统化布置设计(SLP)方法分析产品的生产流程,提供了一种以作业单位的物流和非物流相关关系分析为基准的规划设计方法。最终得出该厂的作业单位位置相关图和波纹管厂的可行布置图。     

Zircon U-Pb ages of granites at Changba and Huangzhuguan in western Qinling and implications for source nature

Mesozoic granitoids are widespread in the Qinling-Dabie-Sulu orogenic belt. Precise U-Pb dating on these granitoids can reveal the evolution of the continental collision orogen and thus provide information on the nature of magma sources. This study presents zircon LA-ICP-MS U-Pb dating and whole-rock geochemical analyses for two intrusions at Changba and Huangzhuguan in western Qinling. Zircon U-Pb ages for central and marginal phases of the Huangzhuguang intrusion are 214±1 Ma and 213±3 Ma, respectively. Zircons from the Changba intrusion yield a dominant cluster with an U-Pb age of 213±2 Ma. Collectively, these ages are younger than ages of 220 to 240 Ma for ultrahigh-pressure metamorphism due to the continental collision between the South China Block and the North China Block, corresponding to syn-exhumation magmatism. Some inherited zircons occur in the Changba intrusion, yielding a weighted mean of ²⁰⁶Pb/²³⁸U ages at 757±14 Ma. This indicates that the Changba intrusion has the crustal source of mid-Neoproterozoic ages and a tectonic affinity to the South China Block. Geochemically, the two intrusuons are both rich in LILE and LREE but depleted in HFSE and HREE, similar to arc-type igneous rocks. The Huangzhuguang intrusion exhibits linear correlations between SiO₂ and the other major oxides, implying chemical evolution from a cognate magma source. It contains mafic enclaves, suggesting possible mixing of felsic-mafic magmas. The Changba granite is rich in Si and K but poor in Fe and Mg as well as has a high value of Fe*, suggesting strong differentiation of granitic magma. Therefore, the two intrusions were derived from the Late Triassic anatexis of the continental crust of different compositions in the northern margin of South China Block. This process may be coupled with exhumation of the subducted continental crust in the stage of late collision.