球团环冷机受料口及挡风墙的改进

环冷机作为球团生产中的三大主机设备之一,良好的运行对球团生产至关重要。哈密球团厂通过对环冷机受料口和挡风墙的改造,降低了设备故障率和维护费用,节约了成本,取得了较好的经济效益。     

减少矫直机故障停机时间的对策

针对矫直机拨料机构故障停机时间长严重影响生产的现状,从人、机、料、法、环等多方面分析了故障原因,最终确定主要原因,并制定相应的对策与改进措施,实现故障时间的全面压缩,保障设备正常运转,生产稳定运行。     

环冷机打滑检测装置的应用

本文在环冷机台车摩擦轮打滑的原因分析及检测装置系统构成和工作原理介绍的基础上,对环冷机检测装置进行改进,并将改进后的打滑检测装置应用于环冷机故障检测,实践表明,该环冷机打滑检测装置的应用对稳定生产、保护设备具有重要意义。     

鼓风环式冷却机常见故障及处理方法

结合制造安装及实际生产经验，对鼓风环式冷却机在运行过程中容易出现的故障肽原因进行了分析讨论，并提出了基本的处理方法，同时强调了定期设备检查维护的重要性。     

京唐烧结厂580m2环冷机跑偏分析及处理措施

京唐烧结厂环冷机采用580m2鼓风环冷的冷却方式,环冷机是用于烧结矿冷却的设备,烧结矿冷却是烧结工序的重要环节。环冷机设备运行是否稳定,将对烧结生产产生巨大的影响。通过分析2号环冷机跑偏故障原因及其造成的影响,对回转框架多次进行测量、调整,并采用有效的治理措施解决环冷机跑偏的问题,遏制由于环冷机跑偏所造成的影响。     

烧结厂环冷机调偏方法

环冷机是烧结厂主要大型设备,是烧结矿与成品整粒间的过渡环节,是烧结工艺中最为重要、工作环境最为恶劣的设备之一.环冷机运行是否稳定对烧结生产影响很大.针对首钢矿业公司烧结厂415m2环冷机跑偏故障,通过跑偏状况测量和Auto CAD仿真模拟,找到了环冷机回装框架受温度影响发生变形是造成环冷机跑偏的主要原因.采取了在21# ～ 54#台车侧辊加铁垫的纠偏措施后,环冷机跑偏得到控制,为同类型设备的跑偏治理提供了借鉴.     

环冷机运行故障原因分析

介绍了某厂360M2环冷机设备在试运行阶段发生的不正常颤动故障,查找分析问题原因,针对此问题,在环冷机制作、安装、使用及维护方面提出了处理措施及有关要求。     

5MVA矿热炉集电环打弧故障浅析

阐述了5MVA矿热炉导电系统中集电环打弧的原因，并拟定了相应的防护改进措施，可减少甚至避免集电环打弧故障的发生，有效提高了电炉生产设备作业率。     

矿山烧结环冷风机故障诊断

利用便携式振动检测设备Leonova与手持设备Ti20热像仪,对大量烧结环冷风机进行检测、数据采集与分析,根据标准来评定烧结环冷风机设备的运行状态,发现具有潜在故障的风机,找出故障来源,提出解决方案,为设备管理者提供科学、合理的维修建议,保证设备稳定运行。     

设备状态监控故障智能诊断系统的功能及其应用

描述了设备状态监控故障智能诊断系统的软硬件结构及基本功能,并且以具体的故障实例分析了设备状态监控故障智能诊断系统在高速线材生产实际中的应用与价值。     

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.