金属材料累积叠轧焊界面的结合特性

 金属材料的界面结合特性是累积叠轧焊技术的关键，在多功能强力热轧机上利用ARB工艺分别对Q235钢和L2纯铝进行了累积叠轧焊自身界面结合特性的试验研究。重点研究了累积叠轧焊材料的界面结合特性，界面结合强度，界面断裂特性，材料组织状态对界面结合的影响。研究结果表明：材料的界面结合性能不仅与首次压下量、变形温度有关，而且，在再结晶温度以下，累积叠轧次数与首次临界变形量共同决定了材料的显微结构，从而决定了材料的界面结合特性，当累积次数超过2次时，材料的界面结合接近基体强度。     

耐火纤维喷涂结合剂的研究与应用

针对通常耐火纤维喷涂中存在的问题，分析耐火纤维喷涂用结合剂的性能要求和常用结合剂的结合机理，完成了不同使用温度条件下耐火纤维喷涂用结合剂的实验研究。通过实际应用，取得了优良的使用效果。     

层状砂岩铜矿床的探采结合实践

总结了麻阳铜矿多年来对九曲湾砂岩铜矿床采用探采结合勘探所积累的实践经验，分析了进行探采结合所要把握的要点，以便最大限度地实现探采结合，提高矿山的经济效益。     

镀膜金刚石与结合剂之间的结合状态研究

利用横向断裂强度试验及扫描电镜分析，研究了磁控溅射镀Ti、Mo及Cu金刚石在Fe基、Ni基及Co基结合剂中的界面结合状态，结果表明，金刚石表面镀覆金属后，对金刚石具有良好的保护作用，避免或减小了结合剂对金刚石的侵蚀。镀覆Ti、Mo后，能够提高金刚石与结合剂的结合强度，但与结合剂的成分以及热压工艺有很大的关系。在830－840℃的热压条件下，镀层金属与金刚石可能形成局部的化学结合，但大部分镀层金属末能与金刚石反应生成碳化物是熔解、扩散到结合剂中，从而结合强度的提高不是很明显。     

金刚石工具铁基结合剂的应用及展望

简要地介绍了金刚石工具铁基结合剂的发展历史，对铁基结合剂的类别、合金化的特点及应用现状进行了评述，并对铁基结合剂的发展作了展望。     

钙处理钢、含氧量高的钢用碱性滑板

分析了钙处理钢、含氧量高的钢用滑板的损毁机理，介绍了国内外开发研究碱性滑板的现状，并指出应着重研究开发树脂结合低碳碱性滑板，还应该注意开发特种金属结合和非氧化物结合的滑板。     

椭圆等厚筛在烧结溶剂筛分中的应用研究

本文结合重钢公司炼铁厂烧结料中所用矿石、熔剂的特点，分析了振筛带来的影响，并结合生产实际，选用了椭圆等厚筛解决了存在的问题。     

表面处理方式对铜/钼/铜复合材料界面结合效果的影响

借助金相显微镜、扫描电镜观察了钼、铜界面的微观组织，研究了采用不同表面处理方式对铜／钼／铜复合材料界面结合效果的影响，并对其界面的结合机制进行了深人的讨论。结果表明，经过喷砂化学处理的材料复合后界面结合最牢固，界面剪切强度最高，达到78．9MPa，形成很强的铜和钼的机械啮合，其主要的结合机制是机械啮合机制和硬化块破裂机制；在同等复合参数条件下，3种处理方法中化学处理法的界面强度最低。     

结合剂对高纯铝镁浇注料性能的影响

以致密电熔刚玉、电熔镁砂为主要原料，分别选用铝酸钙水泥、硅微粉、微粉A为结合剂，研究了三种结合系统对高纯铝镁浇注料物理性能的影响，同时进行了静态抗渣实验，研究了不同结合剂及加入量对高纯铝镁浇注料抗渣性能的影响规律。实验结果表明：（1）合理控制基质中结合剂的加入量可以获得综合物理性能优良的高纯铝镁质浇注料；（2）硅微粉和微粉A结合铝镁质浇注料的抗渣性能优于铝酸钙水泥结合铝镁质浇注料。     

镁质挡渣墙的研制

介绍了硅微粉结合镁质烧注料的结合机理，叙述了镁质挡渣墙的研制过程及使用效果，针对生产中易出现的问题提出了相应的技术措施。     

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。     

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。     

Comparison of the results of surgical and conservative treatment of fractures of the diaphysis of the tibia

In this paper is treated the fundamental problematic of the fracture of the diaphysis of the tibia and the therapeutic results after the conservative and operative treatment are confronted. Among 518 patients with 433 open fractures and 35 with closed fractures of the diaphysis of the tibia, successful treatment of more 2/3 was obtained in the period from 1968 to 1972. Following our casuistics and literature, whose results are similar, we find out that the average total treatment of the osteosynthesis of the fracture of the diaphysis was shortened for 2,5 months depending upon the type and the localisation of the fracture. Apolied methods of the operative and conservative and conservative treatment in relation to the velocity of the medical cure as well as to the extreme anatomical-functional results are analised. We noticed that osteosynthesis, made by the intermedullary nail and the extension of the canals or by a small AO table, by the achieved stability makes conditions of immediate motions and an early rehabilitation. Because of that it gives the best functional results.     

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。     

参与式农业基地建设行动方案设计

为了编制实用性强的基地建设行动方案,首先,确定参与式发展的主体,搭建一个"决策框架";其次,针对行动目标,提出不同参与主体,如管理者、农民、消费者等团队与个人的目标及行动内容;最后,工作应向重塑伙伴式合作关系,挖掘农民自我发展潜力,完成三大角色的转换,打造农业基地文化等方向推进.