灰成分对焦炭热性能的影响

通过在配煤中分别加入不同量的Fe2O3、CaO、MgO、K2O、Na2O、SiO2、Al2O3、P2O5、TiO2改变灰成分的炼焦试验，和大量的模拟生产配煤的炼焦试验。获得169组试验数据，采用回归分析的方法获得了宝钢煤源条件下，焦炭灰成分中十大主要成分对焦炭热性能影响的次序。确立了适合宝钢煤源条件的灰催化指数ACI计算方法。建立了焦炭灰成分对焦炭热性能影响的数学模型。     

八钢部分焦炭的热态性能测试浅论(二等奖)

按照试行的国标草案，进行十七个焦样的热态性能测试．为国标的修订提供了参考意见。试验结果表明：拜城煤焦炭的热态性能优于艾矿1930，与艾矿2183相差不大，劣于五宫煤。用1930、拜城、五宫、大武口、石油延迟焦等几种原料作为配煤。在现有的条件和配比下，焦炭的热态性能改善不明显。并通过不同焦样的热态性能数据，分析了影响八钢焦炭热态性能的主要因素，同时对如何改善八钢焦炭的热态性能进行了理论探讨。     

焦化除尘灰回配炼焦试验初步研究

文章介绍了60kg试验焦炉与6m焦炉分别配加除尘灰的配煤试验。通过试验探索了在八钢现有配煤结构除尘灰的配量,通过优化配煤结构,最终降低焦炭成本。     

浅析八钢焦炭低热态强度、高反应性生产工艺技术

本文结合八钢炼焦生产实际,通过研究分析了解掌握低热态、高反应性焦炭在炉内反应机理,探寻结焦时间、结焦速率、焦炭挥发分及配煤水分等工艺因素对焦炭质量的影响,以便在深层次获取艾矿煤影响八钢焦炭质量因素的规律.     

影响焦炭热性质因素的研究

利用13种粘结结焦性质指标相近的配合煤进行70 kg小焦炉试验,比较了所炼焦炭的热性质与矿物质催化指数、煤岩显微组分和焦炭光学组织的关系。结果表明:当配合煤粘结结焦性指标相近时,焦炭热性质主要由灰成分中矿物质催化指数MCI决定;煤岩显微组分含量也是影响焦炭热性质的因素之一;焦炭热性质中CSR不仅受CRI影响,而且受焦炭中光学各向异性指数OTI及光学组织含量的影响。该结论对指导配煤生产,稳定和提高焦炭热性质具有实际意义。     

影响焦高温性能的因素

分析了影响焦炭高温性能的因素,认为焦炭的热性能主要取于焦炭基质的光学组织;焦的气孔结构;焦炭的灰成分（矿物质）等三方面,并针对攀钢的实际情况,提出改善攀钢焦炭的高温性能,首先应用在保证配合煤粘结性、结焦性的前提下,遵循适当多用低煤化度低灰分煤,进一步减少瘦煤配比和降低配煤碱含量（或碱度指数）的原则;其次是4采用备煤新工艺,如配型煤、选掺性粉碎、煤调湿等措施,同时应重视高炉喷吹煤中的碱含量对焦炭的劣化作用,减少入炉料碱含量,降低高炉的碱负荷。     

配煤炼焦及焦炭热性能试验研究

进行了配煤炼焦试验，考查了在多种配煤方案（各煤种不同配比及各种添加剂）条件下焦炭的热性能（反应性和热强度），为炼焦生产改进配煤方案提供了依据。     

八钢焦炉配加疆内低品质焦煤炼焦的试验研究

为应对焦炭成本居高不下,八钢成立了区域资源最大化利用配煤攻关组.在保证焦炭质量满足高炉生产的前提下,通过改变工艺条件在60kg试验焦炉、工业焦炉开展炉孔试验研究,通过几个月配煤攻关推进,最终低品质焦煤大比例应用到生产中,使得疆内低品质焦煤配加比例阶段性达到较高水平.     

攀钢焦炭热性能试验研究

对攀钢生产焦及不同配煤比的小焦炉试验焦进行高温热转鼓试验、反应性试验、显微结构分析,结果表明:焦炭的冷强度不能完全代表焦炭的热态性能;攀钢焦炭的高温耐磨强度较好,与酒钢、鞍钢相近,但反应性偏高、反应后强度较差,在当前原料条件下,适当降低焦煤配比,提高气肥煤配比有利于改善焦炭冶金性能,可获得一定经济效益。     

焦炭热态性能的影响因素探讨

通过试验对比,探讨了炼焦煤捣固操作、配合煤细度、结焦时间、熄焦方式以及配煤结构对焦炭热态性能的影响。结果表明,捣固炼焦在一定程度上可以提高焦炭的热性能;配合煤细度对焦炭的热性能有一定影响;适当延长结焦时间可以改善焦炭的热性能;干法熄焦可以显著改善焦炭的热性能;配煤结构及煤质特点对焦炭热性能有根本影响,在经济合理的基础上应尽量多配焦煤或肥煤以提高焦炭的热态性能。     

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.