超细二硫化钨粉末在汽油机油中的摩擦学性能研究

通过四球摩擦实验机考察了超细二硫化钨粉末在汽油机油中的摩擦学性能,并与氯化石蜡(T302)、二硫化钼进行比较,同时用X射线光电子能谱仪对磨痕表面元素进行分析,探讨二硫化钨的润滑机理。结果表明:超细二硫化钨粉末在汽油机油中具有优良的抗磨减摩性能,其摩擦学性能优于氯化石蜡(T302)和二硫化钼,并通过实验得出含有1%超细二硫化钨粉末的汽油机油具有最佳的润滑性能。     

钨矿山台浮硫化矿的综合回收研究

对钨矿山台浮硫化矿的综合回收进行了试验研究，根据台浮硫化矿的矿石性质，进行了优先浮钼－铜铅混浮－浮锌－磁选和铜钼混浮－铅锌混浮－磁选－重选流程试验，获得了Ｍｏ、Ｃｕ，Ｐｂ，Ｚｎ，Ｗ，Ｓｎ和Ｓ的独立产品。     

废酸处理分步硫化工艺浅析

分步硫化法是用硫化剂分步沉淀废硫酸中的铜、砷等离子，本文对其可行性进行了理论论证，探讨了控制反应进行的条件，阐述了分步硫化的工艺流程。     

钨矿山多金属硫化矿回收研究

针对钨矿山伴生多金属硫化矿的特点，从浮选工艺流程和选一冶联合工艺流程两方面，介绍综合回收伴生多金属硫化矿物的现状，为加强钨矿山经济效益提供建议和参考。     

钨矿山伴生多金属硫化矿的回收工艺现状

伴生多金属硫化矿是钨矿山的附加产品,具有极大的经济利用价值。随着钨矿企业经济效益的下滑,以及钼、铋、铜等资源的减少,钨矿山伴生金属的综合回收越来越受到重视。文章对钨矿山伴生多金属硫化矿的来源、赋存状态及浮选分离回收工艺进行了调查研究。研究表明,不同钨矿山伴生多金属硫化矿的走向及赋存状态存在差异,且混合硫化矿难分离,最终导致伴生金属的回收指标较差。因此,从粗选加强伴生多金属硫化矿的回收、开发高效价廉的新型选矿药剂以及采用选冶联合工艺是钨矿山最大程度综合回收利用有用金属元素的重要研究方向。     

二硫化钨纳米材料的应用研究

概述了纳米二硫化钨在纳米润滑材料、纳米传感材料、纳米催化材料等多个领域的应用研究。二硫化钨纳米材料是通过强内层共价M-S键,较弱的范德华力层间相互作用结合在一起,其各向异性层状结构具有优异的光学、电子和机械性能,因此广泛用于生物医学、机械润滑、传感器、催化、能量存储、光电器件等领域,是国内外研究者开发的热门新型功能材料之一。根据该材料主要集中在电化学和新能源的现状,着重开发层状纳米二硫化钨微结构新的高附加值具有重要意义。     

新邵钨矿白钨选矿工艺研究

通过采取加强硫化矿浮选、使用白钨的强捕收剂、浮钨前预先脱泥以及改进白钨的常温精选等技术措施，成功地回收了新邵钨矿中难以回收的白钨。     

二硫化钨的生产及发展对策浅析

在综述新型钨产品二硫化钨（WS2）的生产工艺、主要设备等基础上，分析了产品的应用及市场状况，并提出了相应的发展对策。     

浅谈二硫化钨的生产,应用及发展对策

综述了新型二硫化钨产品的生产原料、生产工艺、生产主要设备、产品的特性、应用与市场情况、发展前景及发展对策，并讨论了一些问题。     

某硫化矿矿石氧化自燃的调查及防止措施

通过现场调查与实验研究─—测定硫化矿石的氧化速度、较全面地分析采矿生产过程中硫化矿石氧化自燃的原因，提出了预防和控制硫化矿石氧化自燃的措施。     

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。     

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。     

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)