含碳球团竖炉煤气需要量的探讨

本文根据热平衡原理，推导出含碳球团竖炉内用碳不原铁氧化物时，最小热载体煤气需要量（Ｖｑ）的计算公式，用此公式计算结果表明，最小热载体煤气封面果量很大，在含碳球团全部用碳还原时，含碳球团竖炉一铁浴炉熔融还原流程的煤耗和氧耗都很高，不经济，在实验室研究时，含碳球团的还原速度很快，但由于Ｖｑ很大，这一优点在竖炉内难以实现。     

含碳球团-铁浴熔融还原炼铁法与COREX法的能耗比较

通过计算机模拟计算,研究了含碳球团高温快速预还原＋铁浴终还原炼铁法、含碳球团竖炉预还原＋铁浴终还原炼铁法和含碳球团铁浴一步炼铁法这３种工艺流程的能耗,并与ＣＯＲＥＸ法进行比较。结果表明：含碳球团＋铁浴终还原炼铁法比ＣＯＲＥＸ法的耗煤量和耗氧量低。另外,还介绍了高含碳球团的优点,认为高含碳球团有一定的应用前景     

冷固结含碳球团用于COREX的可行性研究

通过对采用不同粘结剂的３组冷固结含球团的物化性能，冶金性能的试验检测，以及固定床、移动床竖炉模拟ＣＯＲＥＸ预还原的试验研究，探讨冷固启才用于ＣＯＲＥＸ工艺的可行性。试验结果表明，冷固结含碳球团的化学成分和高温冶金性能均能满足ＣＯＲＥＸ预还原的要求，并可以提高整个ＣＯＲＥＸ工艺的生产率，但其机械强度有待进一步提高。     

气基竖炉直接还原球团技术的发展

论述了球团矿质量对气基竖炉直接还原生产和DRI质量的影响以及DRI质量对炼钢生产的影响.介绍了提高气基竖炉直接还原工艺用球团矿质量的技术,包括降低Si02含量、降低粘结趋势、提高还原性和提高大粒度(12.5～16.0 mm)球团比率等措施及其发展.指出若把低TFe、高脉石含量的高炉用球团矿直接用于气基直接还原竖炉,至少应该采用球团涂层技术;如果球团矿脉石含量较高,需要借助工业试验进行综合分析以确定其经济性.     

我国熔融还原技术的研究与开发

本文介绍我国近十年来的榕还原技术研究开发情况，主要包括铁浴造气和铁浴熔融还原、含碳球团竖炉预还原、流态化预还原、竖炉终还原、小型联动试验、半工业试验、炼铁合金和不锈钢母液、软科学研究、发表论文和人才培养等简况。     

竖炉用合碳铬矿球团冶炼铬铁合金

作者就含碳铬矿球团在竖炉内熔融还原冶炼铬铁合金的新工艺进行了试验。探讨了含碳铬矿球团的低温机械性能,测定了球团的荷重钦化温度,论述了温度、还原剂、铬矿粒度等因素对铬铁矿还原性能的影响,并对还原产物作了相结构及矿相分析。热态试验表明,竖炉用含碳铬矿球团可以冶炼出含铬20%的铬铁合金。     

竖炉型含碳球团有机粘结剂的选择与应用

对竖炉型含碳球团有机粘结剂进行了选择研究，对其冶金性能进行了比较，并提出了几种适用于竖炉型含碳球团的有机粘结剂。     

含碳球团还原技术研究现状

分析了含碳球团还原的特点,对含碳球团各种还原工艺进行了比较,提出了含碳球团还原技术的发展方向。     

高炉瓦斯灰制含碳球团直接还原试验研究

通过试验对高炉瓦斯灰和氧化铁皮制得含碳球团的直接还原进行了研究,考察了不同还原气氛、球团中不同C/O、还原时间、还原温度对还原结果的影响。结果表明:高温下含碳球团在空气中直接还原就能获得很高的金属化率。当球团中C/O在1.2以上时,球团的金属化率在还原过程中一直增加,在1 350℃下还原30 min,球团的金属化率达到96.94%。球团金属化率的变化趋势表明球团在反应开始是由化学反应控速环节控制,而后逐渐向扩散控速环节过渡。在1 400℃下空气中还原30 min,球团中还原出的铁与渣完全分离。     

含碳预还原锰球团工艺研究

本文介绍了含碳预还原锰球团实验室丁艺试验结果及其分析与讨论,讨论了在高温还原氧化锰球团时碳化锰相出现的条件及影响含碳预还原锰球团强度的因素,并提出了提高球团强度的方法。     

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.     

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。     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.