含稀土油浆泵耐磨涂层合金粉体材料的研究

采用气雾化方法制备了NiCrWRE油浆泵耐磨涂层用合金粉末。利用SEM、OM、XRD等技术研究了粉末的特性。探讨了稀土元素对NiCrWRE粉末性能的影响。试验结果表明，加入稀土元素可以获得致密化程度较高、分布均匀的组织，粉末形貌呈球形，流动性好，具有良好的喷焊性能，喷焊层与基体形成牢固的冶金结合。     

快速凝固耐热Al－Fe－MRE合金粉末的制备及其特性研究

研究了快速凝固铝铁混合稀土高温合金粉末的制备及其特性，用氩气及氦气超音速雾化制得的粉末呈球形，获得的冷却速率为５×１０３～７×１０６Ｋ／ｓ。冷却速率主要受粉末尺寸影响，同样尺寸的粉末以氦气作冷却介质时获得的冷却速率较高。粉末尺寸越小，组织越细，力学性能越好。     

快速凝固耐热Al—Fe—MRE合金粉末的制备及其特性研究

研究了快速凝固铝铁混合稀土高温合金粉末的制备及其特性，用氩气及氦气超音速雾化制得的粉末呈球形，获得的冷却速率为５×１０＾３－７×１０＾６Ｋ／ｓ。冷却速率主要受粉末尺寸影响，同样尺寸的粉末以氦气作冷却介质时获得的冷却速率较高。粉末尺寸越小，组织越细，力学性能越好。     

纳米二氧化钛粉末的研制

采用水解与均匀沉淀法相结合，制备了锐钛型纳米TiO2粉末，并研究了其制备的最佳条件。利用相关分析测试技术，对粉末粒子的形貌、大小、晶型和比表面积进行了表征。用此制备工艺新技术，成本低，操作简单，易于实现工业化，所得纳米TiO2粉末呈球形，平均粒径为20nm，能满足市场需要。     

双级耦合气雾化制备Ni60A粉末的技术研究

采用双级耦合气雾化法制备Ni60A粉末,并通过激光粒度分析仪﹑扫描电镜等研究了Ni60A粉末的表面形貌、松装密度、及粒度分布。研究结果表明:用双级耦合雾化系统生产的粉末球形度高,存在卫星结构粉末,且细粉末明显增多,空心粉少;松装密度大;粉末粒径分布曲线呈单峰且近似正态分布。还分析了双级喷嘴对雾化过程及粉末粒度的影响机理。     

MoS2颗粒表面均匀包覆Ni的研究

平均粒度为７４μｍ的二硫化钼粉末在７００℃用硝酸镍分解－氢还原法包覆了一层镍。用Ｘ射线衍射仪和扫描电镜分析了此种包覆粉末，发现镍均匀分布在二硫化钼粉末上。ＸＲＤ分析没有检测到诸如残余化学试剂和氧化物之类的杂质。研究表明硝酸镍分解－氢还原法对二硫化钼粉末而言是一种方便和有效的粉末包覆方法。     

共沉淀-热分解法制备金刚石工具用预合金粉

研究用共沉淀-热分解法制备金刚石工具胎体用预合金粉,其中包括共沉淀反应pH值、反应温度和热分解反应温度等对粉末收得率和粒度等方面的影响.采用XRD 和SEM对粉末物相组成和形貌进行了分析,同时采用激光衍射粒度分析仪对预合金粉粒度分布进行了分析.研究结果表明:采用共沉淀-热分解法可以制备出良好的预合金化粉末,粉末呈棒状和不规则形状,粉末粒度较细,分布比较均匀、集中;粉末收得率随着共沉淀反应pH 值的增大而提高,在pH 值约等于9.8时达最大值;随着共沉淀反应温度的升高,粉末粒度逐渐增大;随着前驱体热分解反应温度的升高,粉末粒度逐渐增大.     

BNi2粉末钎料的性能研究

对用气雾化工艺生产研制的BNi2钎料粉末化学成分、颗粒形态、粒度分布、氧含量及熔点进行了检测，并对其微观组织和结构进行了分析。结果表明：BNi2钎料粉末呈球形。成分稳定，氧含量低，组织均匀．各项性能满足钎焊工艺要求。实现了BNi2钎料粉末的产业化和国产化目标。     

盘件用FGH95镍基粉末高温合金

介绍了钢铁研究总院高温材料研究所在盘件用镍基粉末高温合金FGH95方面的研究现状和取得的成果，分析了目前研究工作存在的问题，提出了盘件用粉末高温合金今后的发展方向和研究重点。     

纳米钨粉的制备及其表征

以钨酸和氨水为原料，采用液氮预冻-冷冻干燥-两段还原方法制备获得了30nm的纳米W粉末。并对粉末制备过程中的各阶段产物进行了表征：采用XRD、SEM、FESEM对冻干粉、一次还原粉和二次还原粉的物相组成和形貌进行了分析。结果表明，冻干粉是呈现非晶态的，粉末呈絮状团聚在一起，没有明显的颗粒形貌，表面平滑。一次还原粉末也是呈现非晶态，疏松的海绵体结构。最终产物是晶态的W粉，粒度分布均匀。红外光谱分析结果表明，冻干粉末仍保持Keggin结构；热分析表明，冻干粉分三个阶段失去其吸附水、结晶水、结构水。     

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)     

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.