共查询到19条相似文献,搜索用时 93 毫秒
1.
2.
阐述了带钢厂实施热装热送有利条件,生产组织管理的特点、1999年热装与冷装技经指标对比和热装热送效益情况。 相似文献
3.
4.
制定了连铸坯热送热装节能效果评价指标及评价方法,并应用此评价方法对某企业热送热装工作、节能效果和节能潜力进行了分析。 相似文献
5.
6.
针对攀钢连铸板坯热送热装生产现状,开发了板坯热送,加热过程数学模型,进行了铸坯生产组织方式及表面质量状况轧制前后对应关系的工业试验,在此基础上,建立了铸坯热送热装管理办法和加热炉操作规程。生产统计表明,铸坯热送热装率从1995年的16.7%提高到1996年的36.9%平均入炉温度达565℃。 相似文献
7.
钢铁企业是能源消耗大户,为探索绿色低碳制造技术,以马钢1580热轧产线热送热装率的提升过程为例,对生产计划管理、热送管理、热装管理、信息化管理四个方面进行专项推进,实现了优化钢轧界面效率、降低热轧加热炉能源消耗的目的,达到有效减少碳排放、保护生态环境的效果,对企业节能环保、绿色低碳具有重大的意义。 相似文献
8.
基于延时Petri网的热送热装生产计划模型的建立与分析 总被引:1,自引:0,他引:1
应用延时Petri网对连铸-热轧生产过程进行了描述,建立生产计划模拟模型,并利用此模型对热送热装一体化生产计划进行模拟分析和计算,得到了满意的结果。 相似文献
9.
介绍了福建三钢闽光股份有限公司连铸坯热送热装工艺及设备,对输送辊道、横移机、转盘的功率进行计算,并阐述了连铸坯热送热装技术及设备在轧钢生产上的经济效益. 相似文献
10.
郑柏平 《金属材料与冶金工程》2000,(5):14-17
介绍了渐钢热送热装的基本工艺路线和4个发展阶段;分析了热送热装在降低企业加热炉综合燃耗、减少重油消耗、减少中间坯库存等方面的作用;阐述了企业开展热送热装与促进企业工艺和产品结构优化之间的关系,并结合目前热送热装工作存在的问题,提出了今后研究和工作的方向。 相似文献
11.
12.
13.
Human rotavirus strain HCR3 was isolated from the stool of a clinically normal infant and identified as a serotype G3 rotavirus; however, it could not be grouped into any known human VP4 genetic groups by a polymerase chain reaction assay. The fourth gene of strain HCR3, which encodes the outer capsid protein VP4, was sequenced. This gene is 2362 nucleotides in length and contains one open reading frame capable of encoding a protein of 776 amino acids. The VP4 protein of strain HCR3 shared 67.5-73.5% amino acid identity with those of strains KU, RV-5, 1076, and K8, representing four human genetic groups, and relatively high homology (84.7%) with a fifth genetic group represented by strain 69M, whose VP4 shows more similarity to animal than to human strains. Strain HCR3 shared higher VP4 amino acid homology with various animal rotaviruses, ranging from 74.5 to 89.4%. These observations suggest that the VP4 outer capsid protein of strain HCR3 represents a new VP4 genetic group that is more closely related to animal rotaviruses than to human rotaviruses. 相似文献
14.
Douglas Kevin S.; Ogloff James R. P.; Nicholls Tonia L.; Grant Isabel 《Canadian Metallurgical Quarterly》1999,67(6):917
This study examined the predictive validity of the HCR–20 (Historical, Clinical, and Risk Management) violence risk assessment scheme and the Psychopathy Checklist: Screening Version (PCL:SV). Files of 193 civilly committed patients were coded. Patients were followed up in the community for an average of 626 days. Receiver operating characteristic analyses with the HCR–20 yielded strong associations with violence (areas under curve [AUCs?=?.76–.80). Persons scoring above the HCR–20 median were 6 to 13 times more likely to be violent than those scoring below the median. PCL:SV AUCs were more variable (.68–.79). Regression analyses revealed that the HCR–20 added incremental validity to the PCL:SV and that only HCR–20 subscales predicted violence. Implications for risk assessment research, and the clinical assessment and management of violence, are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
15.
阐述了天铁企业员工信息管理程序的设计过程,通过对业务需求的分析,对管理程序进行全新开发,实现了员工信息的录入、管理、查询等功能,增强了软件实用性,提高了人力部门的工作效率,实现了人员管理规范化、系统化、科学化. 相似文献
16.
Applying the business process engineering philosophy, this study focuses on developing a construction management process reengineering (CMPR) method to improve the efficiency of construction management. The CMPR method includes four phases, namely, process representation, process transformation, process evaluation, and reengineering activity. Using CMPR, inefficient operations within a construction company working process can not only be identified, but a new rational operation process can also be developed to improve management efficiency. In this way, the competitive ability of a construction company is also increased. This study argues for the need of a new research agenda in construction management in general. This is illustrated by information technology within construction—in particular, by examining the potential application of the reengineering philosophy. The research possibilities are identified and tested based on the implementation of the CMPR method. To some extent, this study establishes a new agenda of process reengineering for future research. 相似文献
17.
针对国营钢铁特大型企业设备及技术引进管理信息系统的设计和开发进行了研究。采用系统工程和ISO9000质量管理标准的理论和方法,对业务流程进行了分析与再造,用信息技术对再造后的流程进行信息化改造,设计出系统总体功能模型,在总体功能设计的基础上利用软件工程的原型化开发方法进行了研究。 相似文献
18.
Control of protein synthesis by hemin. Isolation and characterization of a supernatant factor from rabbit reticulocyte lysate 总被引:1,自引:0,他引:1
M Gross 《Canadian Metallurgical Quarterly》1976,447(4):445-459
The regulation of protein synthesis by hemin in rabbit reticulocyte lysates is mediated by a hemin-controlled translational repressor protein (HCR) that inhibits polypeptide chain initiation. The effect of this translational inhibitor can be reversed by a high molecular weight protein in the post-ribosomal supernatant fraction. This supernatant factor has been purified approx. 700-fold. It is as effective in reversing the inhibition of protein synthesis due to an early form of HCR (intermediate HCR) as it is in stimulating protein synthesis in the absence of hemin. It is progressively less effective at reversing the inhibition of protein synthesis due to a late from of HCR (irreversible HCR), double-stranded RNA, and oxidized glutathione. The supernatant factor is chromatographically different from the initiation factor IF-MP, isolated from reticulocyte ribosomes, that can also overcome the inhibitory effect of HCR. The supernatant factor does not require hemin for activity, and its action is somewhat suppressed by a level of hemin that is optimal for protein synthesis. 相似文献