马钢2500m~3高炉长期休风操作的经验

马钢2500m~3高炉开炉以来,进行了22次定修,休风时间均在8h以上。通过不断总结经验教训,马钢在休风前准备、休风料的加入、休风时机的选择、复风和开铁口操作等方面积累了丰富的经验。     

马钢2500m^3高炉降料面操作实践

马钢2500m^3高炉休风前准备充分，休风料装入合适，休风过程中对炉顶温度和炉顶齿轮箱的温度控制较好，结果料面安全顺利地降到了风口中心线以下。     

马钢2500m^3高炉长时间临时休风的炉况恢复

１９９５年１２月４日马钢２５００ｍ＾３高炉上料主皮带纵向撕裂，非计划休风１１８．５ｈ，休风后采取了一系列防凉措施，制定了复风计划，炉况恢复较快，复风后１．５天炉况恢复正常。     

马钢2500m^3高炉长时间临时休风的炉况恢复

１９９５年１２月４日马钢２５００ｍ＾３高炉上料主皮带纵向撕裂,非计划休风１１８．５ｈ。休风后采了一系列防闵措施,制定了复风计划,炉况恢复较快,复风后１．５天炉况恢复正常。     

马钢二铁厂4号高炉晚期高产技术

马钢二铁厂４＾＃高炉晚期在冷却壁破损严重和设备老化的情况下，通过采取冷板Ａ、Ｂ、Ｃ控制，尽量减少慢风、休风，保证全风操作及加强管理等措施，使得高炉晚期炉况顺行，达到了较好的技术经济指标。     

八钢B高炉定修休风料加入实践

高炉休风是高炉生产中经常发生的事情,它包括事故处理、设备检修等项目.进入2014年以来,B高炉经历了两次计划检修.在计划满炉料休风中,做好休风准备工作,下好休风料,高炉按时休风,复风后迅速恢复炉况是很重要的.此次B高炉正确装入休风料,使得高炉开风后炉况恢复良好,快速达到休风前水平.     

邯钢7号高炉长时间休风后复风操作

对邯钢7号高炉长时间休风后的复风操作进行了总结。7号高炉在休风117h39min后,通过准确掌握加风开风口节奏,休风期间加强保温措施,对料流轨迹进行测量,加强出铁组织等,高炉得以快速恢复达产。认为,本次休风前锰矿没有加到位,影响了炉况恢复的进程;针对近120h长时间的休风,可尝试采用加焦模式,防止炉温下降过多、热量恢复进程慢。     

邢钢套筒窑长时间休复风生产实践

制定了邢钢套筒窑长时间休复风方案,介绍了套筒窑休风56h复风全过程,为今后长时间休风、复产积累了宝贵的经验。     

浅谈高炉休风料

在高炉４－１６小时的计划休风中，休风料中焦炭的增量与休风时间呈线性关系，其增量计算式可通过热平衡推导出来。此法所确定的高炉休风料能使复风后高炉生产迅速转入正常。     

高炉压注造衬的休复风操作

莱钢 2 #高炉在实施压注造衬的休风复风操作中 ,通过合理安排休风料 ,探索复风操作新方法 ,在休风时间长达2 0 h情况下 ,复风后仅用 4h就实现了全风作业     

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.