上钢一厂2500m^3高炉开炉与达产实践

上钢一厂２５００ｍ＾３高炉开炉选用了优质的宝钢焦炭,确定了合理的开炉工艺参数,采用了先进的热风炉烘炉工艺和料面测量技术,并加强开炉管理,结果高炉开炉顺利成功。高炉开炉后,通过调整多环布料模式,加强高炉操作及炉内外管理,取得了较好的技术经济指标。     

天钢2号高炉开炉实践

对天钢2号高炉热风炉和高炉烘炉、布料测定及高炉开炉操作的一些经验进行了总结,并对开炉后出现的问题进行了分析,解决了风口跑风、热风炉燃烧阀关不严和炉前设备等问题.通过调整风口进风面积和布料制度,高炉生产保持稳定顺行.     

本钢新1号高炉开炉初期的调整

本钢新1号高炉开炉初期采取了多种操作手段进行调剂,如布料、料线、矿批等的调整稳定了高炉的生产,使高炉气流稳定快速进入强化阶段     

数字化布料技术在长江钢铁3号高炉的应用

长江钢铁新建3号高炉开炉装料过程中,采用了激光检测技术,根据料流宽度、料流轨迹、料面形状、FCG曲线等重要布料参数,制定了较合理的开炉布料矩阵;高炉点火后,随着风量、批重及焦炭负荷的增加,依据实际炉况变化及布料仿真数学模型的计算结果,通过定量化的布料数据分析,实时有效地对布料矩阵进行了调整。与传统的借鉴经验及定性摸索方式开炉相比,数字化布料技术更有助于操作人员定量化掌握布料规律,实现高炉顺利达产。     

济钢3＃1750m3高炉大修开炉生产实践

济钢3＃1750 m3高炉在大修后的开炉生产实践中,成功尝试了长风口配置和无中心加焦的布料模式,由于准备充分,开炉后炉缸加热快速、均匀,实现了两天喷煤,三天利用系数达到2．0以上的良好开端,并在后续的煤气流调整方面积累了宝贵的生产经验。     

马钢9号高炉无料钟炉顶多环布料生产实践

通过对马钢9号高炉料流轨迹的测定，找到了料线、布料挡位和溜槽倾角的关系，为高炉开炉后实现多环布料提供了理论依据。9号高炉的生产实践表明，350m^3级高炉无料钟炉顶，同样可以实现多环布料，并取得较好效果。     

石钢0号高炉无料钟炉顶的应用

为了充分了解无料钟炉顶的布料规律，在开炉前模拟高炉实际情况进行了布料测定，为开炉布料参数的确定提供了理论依据。另外，对炉顶自动化系统进行了完善，能通过γ角自学习系统和β角步进程序的结合更好地实现高炉布料，达到较高的布料精度。     

酒钢2号高炉装料制度优化实践

对酒钢2号高炉开炉后装料制度调整过程进行了总结。通过确定适宜的料线、合理的布料模式、布料矩阵和批重,使上部装料制度和现有的送风制度相匹配,稳定上部煤气流分布,维持了高炉稳定顺行。通过后期逐步调整风口布局,下部改善送风制度,上部稳定优化装料制度,使上下部调剂相合理,形成合理的操作炉型,实现了高炉长时间稳定顺行,取得较好的生产指标,燃料比降至555 kg/t。     

大型高炉无钟炉顶的布料测定

综述无钟炉顶的布料测定对大型高炉开炉和生产的意义和作用及布料测定的主要内容；简介布料测定的检测装置；并且列举数座大型高炉布料测定的扼要内容和结果，以资参考。     

红钢3号高炉开炉实践

对红铜异地大修的3号高炉炉型特点及开炉前期生产准备工作进行总结,分析了炉型设计、布料特点、开炉用料结构等。高炉实现了安全、顺利开炉并迅速达产,说明开炉操作制度是合理的。     

转炉炉壳热应力分析

根据实际转炉建立实体模型。以有限元为手段,考虑了炉衬和炉壳材料的物性参数随温度变化的特点和炉衬与炉壳之间膨胀间隙,计算了转炉炉壳在温度载荷和炉衬膨胀压力同时作用下的热应力。所得结果可为转炉炉壳设计提供依据。     

焦炭热性能指标意义浅析

通过对焦炭在高炉内的历程及其变化规律的剖析,阐述焦炭热性能指标的意义,形象地把焦炭在高炉内的损耗分为三部分(M1,M2,M3)。指出M2对焦比及焦炭价格有一定的指导作用。     

Results of treatment of cancer of the cardia

Cancer of the cardia is traditionally discussed with cardiac cancer of the lower portion of the esophagus and upper gastric cancer invading the esophagus, and the specific characteristics of cancer of the cardia have never been clearly defined. We reviewed the outcome of 172 patients with adenocarcinoma of the cardia who had undergone radical surgery between 1949 and 1994 in the Division of Gastrointestinal Surgery of the Cancer Institute Hospital. The centers of the tumors were located within 2 cm above and below the boundary between the esophagus and the stomach, and their longitudinal diameter was less than 8 cm. We divided the patients into an early period (1949-1979; n = 79) and a late period (1980-1994; n = 93), and focused on the historical transition. There were no differences in patient gender or histology between the two periods. However, the late period was associated with fewer cases of esophageal invasion and shorter longitudinal diameter, as the age of the population advanced. The number of advanced cancers such as the localized and infiltrative type had decreased, and early cancer and early clinical stage had become more common, but despite the fact that the number of early cancers had increased, extended dissection, such as thoracic and paraaortic lymph node dissection, was performed more frequently. By clinical stage, the long-term outcome markedly improved in Stage I patient in the late period, and tended to improve in Stage II and III patients. This appears to have been attributable to the prevention of micrometastasis by extended dissection, although the number of early cancers is another major potential cause. There were no differences in the outcome of Stage IV patients between the two periods, and further advances in multimodality therapy must be awaited. The range of resection is basically proximal gastrectomy, and if there are adequate indications, the prognosis is favorable. In view of the status of lymphatic flow and lymph node metastasis, and long-term results, lateroaortic lymph node dissection is important. Since the number of early cancer patients has been increasing, if intraabdominal recurrence is prevented, intrathoracic lymph node dissection will contribute greatly to the outcome of such patients.     

The effect of amount of possession of the trait of hostility on accuracy of perception of hostility in others.

Some theories of personality hold that an individual's perception of others is influenced by his own personality characteristics; more specifically, that a trait of low social value will be projected more into others, and that insight into the possession of these characteristics reduces this distortion. These 2 hypotheses were tested by having a group of college students rate each other (including themselves) on degree of friendliness or hostility. Agreement with group rating about self yielded the insight score. In general, the hypotheses were supported; the "friendly" Ss were most accurate in their perception of others, and insight was positively associated with accurate perception. From Psyc Abstracts 36:04:4HL16M. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Comparison of rates of infection of two methods of emergency ventricular drainage

The rates of infection of two methods of external ventricular drainage in use at Atkinson Morley's Hospital--namely, (a) percutaneous drainage with Rickham reservoirs and (b) tunnelled ventriculostomies--were compared in this retrospective review. Percutaneous drainage of CSF with Rickham reservoirs was associated with a 27% rate of infection as identified by positive microbiological cultures; tunnelled ventriculostomy catheters had a 10% infection rate. The difference in the infection rate between the two methods was statistically significant (P < 0.015). Other variables examined, including the age and sex of the patients and the reasons for ventricular drainage, were not associated with an increased rate of infection. Most infections from either method were caused by a coagulase negative staphylococcus. The average duration of ventricular drainage before identification of positive cultures was 5.7 days for Rickham reservoirs and 6.0 days for ventriculostomies.     

浅析《野草》的版画特征

鲁迅先生一生热爱美术作品,对版画中木刻兴趣尤甚.<野草>作为其"写心之作",亦呈现出一些与木刻版画一致的审美特征:一是具有木刻版画的色彩特征,多对比、多冷色,有阴郁的美感;二是具有木刻版画的力度特征,环境描写、人物刻画处处刀锋毕现,遒劲有力,有一种"力之美".     

四辊破碎机车刀架的改造

针对四辊破碎机车刀架车削中存在的几个问题,详细介绍了电动车刀架的结构和工作原理,建立主要设计参数的数学表达式,并进行适当的分析。改造后,这种电动车刀架运行平稳、可靠、方便、省力,取得了预期的效果。     

Effect of antibiotics of chemotaxis of human leukocytes

The effect of 20 different antibiotics on chemotaxis by human neutrophils was studied. Human leukocytes incubated with chloramphenicol, rifampin, sodium fusidate, and tetracyclines in vitro showed markedly depressed migration. The mechanisms by which these antibiotics affect leukotaxis are discussed.