锌浸出渣挥发窑内衬砖的选择和实践

分析总结了葫芦岛锌厂浸出渣挥发窑内衬砖损坏机理及原因,提出了内衬砖的选用原则,并对普通烧结镁砖、直接结合镁砖、铝铬砖、镁铬铝砖等几种常用内衬砖的性能指标及实际应用情况进行了对比,介绍了镁铬铝砖实际应用情况。     

镁铝尖晶石的合成与应用

镁铝尖晶石的合成方法有电熔法和烧结法。利用镁铝尖晶石研制的耐火材料主要有尖晶石浇注料、镁铝尖晶石碳砖、方镁石－尖晶石砖等，可用于钢包内衬及水泥回转窖、活性石灰窖等，抗侵蚀性能好，使用寿命长。     

高炉铝炭砖的生产与应用

本文着重阐述了研制高炉铝炭砖的依据以及生产技术措施,并简要介绍了铝炭砖在高炉上的应用情况,指出高炉铝炭砖是高炉内衬更新换代的理想材料,具有广阔的应用前景。     

镁铝尖晶石砖的应用与研究

本文叙述了镁铝尖晶石砖的试制及应用情况，并从实践中总结出了铝－镁铝尖晶石砖在钢包上应用寿命比铝镁不烧砖有很大提高。并对人工合成尖晶石提出了改进意见。     

镁铝砖等几种耐火材料性能的检测

对镁铝砖、高镁砖镁铬砖、电熔镁砖，铝铬渣砖等几种耐火材料的组织结构、抗热震稳定性、抗金属侵蚀性及抗渣性进行了检测，并对检测结果进行了简要的综合评定。     

《平炉用镁铝砖形状尺寸》行标修订

为修订冶金部标准《平炉用镁铝砖形状尺寸》，研究了平炉砖的特殊尺寸参数及拱形砌砖新计算方法，完成了《平炉用镁铝砖形状尺寸》修订任务     

几种不同材质平炉炉顶砖的使用概况

本文论述了不同材质平炉炉顶砖的使用情况，镁铝铬质炉顶砖对提高炉龄是有一定的效果的。     

危废焚烧炉渣对耐火材料侵蚀的试验研究

本研究选取铬刚玉、镁铬刚玉和烧结锆刚玉3种不同材质的耐火砖,在不同酸碱熔渣环境下进行侵蚀试验并探索侵蚀成因。结果表明,酸性熔渣环境下,铬刚玉砖抗侵蚀性能较好,镁铬刚玉砖侵蚀较为严重,烧结锆刚玉砖侵蚀明显;随温度升高、时间延长,铬刚玉砖的抗侵蚀性能最优,镁铬刚玉砖抗侵蚀性能、抗热膨胀性能均较差,烧结锆刚玉砖侵蚀最严重;中性熔渣环境下,铬刚玉砖抗侵蚀性能降低,侵蚀状况略微明显,镁铬刚玉砖侵蚀状况相对较好,液面线上方出现了一定程度的裂缝,烧结锆刚玉砖侵蚀速度较快,液面线处出现明显“凹槽”;碱性熔渣环境下,铬刚玉砖表面被侵蚀恶化明显,镁铬刚玉砖侵蚀状况不明显,烧结锆刚玉砖被侵蚀明显。对侵蚀成因进行分析发现,侵蚀是由焚烧炉渣原渣中含有的Na₂O非晶态矿物、结晶态石英和外加钙质氧化物与耐火材料中化学成分发生反应导致的,侵蚀速度与耐火材料化学成分有关。     

国内外高炉内衬的现状与发展

本文叙述了国外几个主要发达国家大型高炉内衬材料的选用和使用情况,以及我国高炉内衬的现状与发展,并介绍了高炉内衬更新换代的新产品——高炉铝炭砖的技术性能。     

高炉铝炭砖在太钢1200m~3高炉上的应用

本文叙述了太钢1200m~3高炉炉身下部至风口带内衬采用新型耐火材料——高炉铝炭砖的设计、施工及应用效果。论述了该炉衬方案的先进性和技术可靠性,并阐述了本设计所采用高炉铝炭砖的优良性能及广阔的使用前景。     

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.     

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.     

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)