莱钢一铁,二铁高炉煤气联网的可行性探讨

为了提高莱钢煤气管网的安全性、可靠性和互补性，稳定管网压力，保证生产安全稳定，减少高炉煤气放散，提高高炉煤气利用率，必须实施一铁、二铁高炉煤气联网。该措施技术上可行，两铁煤气成份相近，管道布置简单易行、投资少，效益显著。     

高炉热风炉、烧结机配烧焦炉煤气的应用

宣钢1、2号高炉热风炉及烧结机原来使用高炉煤气，由于西区高炉煤气用户多，难以实现煤气平衡。为了提高热风炉风温、改善烧结矿质量，掺烧焦炉煤气，取得了一定的经济效益。     

高炉煤气利用的研究

介绍了高炉煤气的特点，以及采用全烧高炉煤气锅炉的节能措施，并分析了包钢高炉煤气利用的经济和社会效益。     

电除尘器双向进气工艺的选择

１９９４年南钢拟建炼铁３５０ｍ３的４＃高炉，煤气产量为７０～９０ｋｍ３／ｈ，煤气压力５０００～９０００Ｐａ，煤气温度４０℃～５０℃。经对高炉煤气的精除尘设备作了认真的比较，分析了高炉区域布置紧凑、场地紧张，以及管式、板式等电除尘器的特点。管式电除尘器因工艺成熟，职工操作维护熟练，最后选型为Ｄ１５２—１型。南钢原有３座由２５５ｍ３扩容至３００ｍ３的高炉，煤气清洗为通常的塔文系统，每座高炉产的煤气各自经脱水器后进入１６００半净煤气总管，布置见图１。１９７８年Ｄ１１２型电除尘器投产时，南钢高炉煤气尚达…     

河北冶金工业利用高炉煤气发电现状与对策

介绍了河北省高炉煤气放散及利用现状，高炉煤气发电带来的巨大经济效益及良好的社会效益，提出了推广高炉煤气发电的实施意见。     

20t／h全烧高炉煤气锅炉的建设

梅山新３号高炉投产后，热风炉热效率提高，自用高炉煤气量减少，使得高炉煤气放散量增加，既浪费能源又污染环境。为此建设一台２０ｔ／ｈ全烧高炉煤气锅炉，以节能降耗。     

高炉煤气与煤联合燃烧工艺在发电机组锅炉上的应用

根据高炉煤气的特点，对发电机组的锅炉进行了改造，使之采用高炉煤气与煤联合燃烧工艺，满足了高炉煤气在炉膛内燃烧的要求，并遵循充分利用高炉煤气，不足部分由煤补充的原则，确定了燃料的结构，保证了发电机组安全，满负荷运行。     

高炉热风炉掺烧混合煤气实践

炼铁厂高炉热风炉原来是用高炉煤气，由于高炉煤气理论燃烧温度较低，导致热风温度低，为提高热风温度，掺烧了混合煤气，取得了一定的经济效益。     

韶钢750m^3高炉煤气全干式布袋除尘

介绍了国内外高炉煤气布袋除尘的发展及国内高炉煤气布袋除尘的技术现状，分析了国内高炉煤气布袋除尘存在的主要问题并提出了改进措施，同时对韶钢750m^3高炉煤气全干式布袋除尘系统作了详细介绍。     

高炉煤气放散装置的改进

鄂钢燃气厂高炉煤气净化系统现有0800高炉煤气放散装置两个，分别设在1^#高炉和2^#高炉净煤气主管。其结构见图1。该装置通过调节电动蝶阀“2”来调节主管“1”的压力，其作用是当主管“1”的压力过高．超过正常操作压力上限，即打开蝶阀“2”，放散煤气，以保证高炉煤气管网压力在安全正常范围内。     

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.