Q195L盘条的生产实践

介绍在柳钢150t转炉系统生产拉丝用Q195L盘条的冶炼、连铸工艺,对其轧制工艺、力学性能等方面进行了简要分析。     

SWRH82B热轧盘条生产工艺与实践

针对SWRH82B热轧盘条的特点和用户要求,本钢集团北营公司对转炉冶炼、LF精炼、连铸及轧制工艺进行了优化,生产的盘条拉拔和使用性能均满足了用户需求。     

82B盘条拉拔断裂原因分析及性能提升

针对汉钢公司生产的82BΦ12.5mm盘条在研发初期供客户试用的过程中出现了拉拔断裂的问题,通过对82B热轧盘条拉拔断裂原因进行分析,并根据检验分析结果,有针对性地优化了转炉冶炼、LF精炼、连铸、轧制等环节的工艺.经工艺优化后,目前汉钢所生产的82BΦ12.5mm盘条性能优异,完全满足客户使用要求.     

承钢45#钢盘条的研制与开发

介绍了45^#钢盘条采用氧气顶吹转炉冶炼-吹氩喂线-方坯连铸-高速线材轧机生产的研发过程。通过确定合理的化学成分，选择合理的冶炼、连铸、轧制和控制冷却的工艺参数，生产出了符合用户使用要求的盘条。     

BL1 拉丝材的开发

介绍了以转炉冶炼→ＬＦ炉精炼→连铸→高速线材轧机轧制,生产低碳低硅拉制钢丝用的ＢＬ１盘条的试生产工艺及拉拔试验的情况。结果表明,ＢＬ１线材完全能替代湘潭钢原平炉－模铸工艺生产的Ｃ１Ｆ线材,其化学成分合格,各项性能优良。     

Q390GJDZ35高建板的研制开发

介绍了采用氧气顶底复吹转炉-LF炉精炼→板坯连铸→TMCP生产Q390GJDZ35高建板的生产工艺。通过合理设计化学成分及制订适合本厂的冶炼、连铸、轧制工艺，采用微合金化和TMCP相结合技术，成功开发Q390GJDZ35高建板，产品质量满足GB／T19879—2005要求。     

Q345C低合金高强度结构钢板的试制

介绍采用氧气顶吹转炉→吹氩喂丝→板坯连铸→控制轧制生产Q345C低合金高强度结构钢板的生产工艺。通过对化学成分的合理设计及制订适合该厂冶炼、连铸、轧制的工艺，采取微合金化和控轧控冷相结合的有效技术措施，提高钢板的综合性能，特别是低温冲击韧性。生产的Q345C钢板，其产品质量完全符合GB／T1591—94标准要求。     

低碳拉丝用盘条的研制开发

CL08低碳拉丝用盘条系低碳低硅镇静钢，采用氧气顶吹转炉冶炼-吹氩喂线-方坯连铸-高速线材轧机生产。通过对化学成分科学合理设计及采取冶炼、连铸技术和轧制等工艺措施，使得盘条具有强度低、塑性高、易拉拔等特点。用该工艺生产的拉丝用盘条，产品质量完全满足用户的使用要求，远销韩国，为企业创造出可观的经济效益。     

Q390GJD／Z35高建钢板的研制开发

介绍了采用氧气顶底复吹转炉→LF炉精炼→板坯连铸→TMCP生产Q390GJD／Z35高建钢板的生产工艺。通过对化学成分合理设计及制定适合本厂的冶炼、连铸、轧制工艺，采用微合金化和TMCP相结合技术，成功开发了Q390GJD／Z35高建板，产品质量满足GB／T19879—2005要求。     

ML15Al冷镦钢盘条的试制

介绍了采用氧气顶底复吹转炉-LF炉精炼-方坯连铸-高线轧制生产ML15Al冷镦钢盘条的生产工艺.通过对化学成分合理设计及制订适合本厂的冶炼、连铸、轧制工艺,采用Ca处理技术和全程保护浇铸技术相结合的有效措施,解决了浇铸含Al冷镦钢中包水口易堵塞的技术难题.生产的冷镦钢盘条,其产品质量完全符合GB/T6478-2001标准要求,并且获得了用户的好评.     

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.