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总结经验、巩固成绩、推进连铸生产建设全面优化──在第五次全国连铸工作会议上的报告殷瑞钰1995年3月5日SUMUPEXPERIENCE、HOLDONPROGRESS、PUSHFORWARDTHECONTINUOUSCASTINGPRODUCTIONA... 相似文献
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SUP9是日本钢号,和国产的55CrMnA弹簧钢相当,和弹扁的主要产品60Si2Mn相比,它以淬透性好,脱碳倾向小等优势,越来越受到国内同行的重视。由于SUP9的淬透性好,用60Si2Mn的轧制工艺,往往造成硬度过高。热轧成品硬度过高,对最终的机械性... 相似文献
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刘忠民 《有色冶金设计与研究》1996,17(A00):49-52
本文就CAD制图过程中碰到的一些问题,主要叙述如何利用AUTOLISP语言来解决三个问题:PLINE线变线宽;未汉化版AUTOCAD的输入汉字方法;改变字符大小,从而了熟练使用AUTOLISP可以提高CAD制图水平。 相似文献
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利用躲峰时间检修 减少电炉热停次数UTILIZINGOFF-PEAKPERIODFOROVERHAULANDABATINGELECTRICFURNACEHOTSHUTDOWNTIMES¥//锦州铁合金厂现有电炉13台,日耗电在120万kwh以上。由于... 相似文献
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加速发展连铸推动钢铁工业结构优化殷瑞钰(冶金工业部)SPEEDINGUPDEVELOPMENTOFCONTINUOUSCASTINGTOPROMOTESTRUCTUREOPTIMIZATIONOFMETALLURGICALINDUSTRY¥YinRu... 相似文献
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介绍了包钢计量处UPS电源的网络分布、UPS电源监控系统的构成、设计与实现,信号采集与数据分析的实现方法及串口映像技术在本系统中的应用。 相似文献
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本文介绍了某冶金铁路运输系统中,UPS在微机联锁、无线调度系统、信息化、程控交换机等方面的应用,并简单介绍了UPS的选配、使用和日常维护。 相似文献
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本文对静态转换开关进行了详细介绍,并针对目前冶金钢铁行业电气控制系统中的不间断UPS在使用中和静态转换开关的配合使用,提出了相应的解决方案。在实际应用中,一旦电源发生故障,管道内和容器内所有的参数都不清楚,很容易发生爆炸和管道堵塞等事故,少则损失几百万,多则达几千万元,在冶金钢铁系统的装置电源中,UPS的运行可靠性是第一位的,除了UPS的性能外,可靠经济的运行方案也是非常重要的。 相似文献
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BACKGROUND:. Modern biological research is highly dependent upon recombinant DNA technology. Conventional cloning methods are time-consuming and lack uniformity. Thus, biological research is in great need of new techniques to rapidly, systematically and uniformly manipulate the large sets of genes currently available from genome projects. RESULTS:. We describe a series of new cloning methods that facilitate the rapid and systematic construction of recombinant DNA molecules. The central cloning method is named the univector plasmid-fusion system (UPS). The UPS uses Cre-lox site-specific recombination to catalyze plasmid fusion between the univector - a plasmid containing the gene of interest - and host vectors containing regulatory information. Fusion events are genetically selected and place the gene under the control of new regulatory elements. A second UPS-related method allows for the precise transfer of coding sequences only from the univector into a host vector. The UPS eliminates the need for restriction enzymes, DNA ligases and many in vitro manipulations required for subcloning, and allows for the rapid construction of multiple constructs for expression in multiple organisms. We demonstrate that UPS can also be used to transfer whole libraries into new vectors. Additional adaptations are described, including directional PCR cloning and the generation of 3' end gene fusions using homologous recombination in Escherichia coli. CONCLUSIONS:. Together, these recombination-based cloning methods constitute a new comprehensive approach for the rapid and efficient generation of recombinant DNA that can be used for parallel processing of large gene sets, a feature that will facilitate future genomic analysis. 相似文献
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采用电沉积法在 CuSO4/H2SO4 体系中制备锂离子电池负极集流体铜箔材料,对光亮剂聚异硫脲丙磺酸内盐(UPS)、3- 巯基 -1- 丙磺酸钠(MPS)、N,N- 二甲基二硫代甲酰胺丙烷磺酸钠(DPS)和醇硫基丙烷磺酸钠(HP)在电解铜箔中的应用进行了研究。结果表明:MPS 和 HP 的光亮效果最明显,导致铜箔粗糙度明显降低,表面形貌均匀,但 HP 和 MPS 过量会使抗拉强度降低 ;DPS 提高光泽度和降低粗糙度的效果都相对较差,过量使抗拉强度明显降低;UPS 几乎没有光亮效果,对抗拉强度和断裂延伸率影响也不明显。 相似文献
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Stoddard Victoria M.; Tsushima William T.; Heiby Elaine 《Canadian Metallurgical Quarterly》1988,25(3):370
Studied data from 194 adult outpatients in a private medical center to determine whether the Minnesota Multiphasic Personality Inventory (MMPI) or a utilization prediction scale (UPS) predicted decrease in outpatient medical utilization following psychotherapy. Although none of the 13 MMPI scales discriminated differences, a UPS cutoff score correctly categorized 75% of the original sample. When the UPS was applied to a cross-validation sample, two-thirds were correctly identified. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
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宝钢分公司大部分UPS存在旁路供电的问题,通过两例UPS故障案例的分析,阐明UPS旁路供电的重要性.提出UPS旁路供电的正确设计方案,为UPS的工厂供电设计作参考,确保UPS突发故障时UPS能自动切换到交流旁路供电,继续保持电源供给. 相似文献