ZZ型立式研磨机

ＺＺ型立式研磨机为解决含碳量在９０％－９８％石墨产品的需要，地矿部郑州矿产综合利用研究所选矿专家研制成功的ＺＺ型立式研磨机，能使石墨得到很好的单体分离，经浮选可获得品位９４％一９７％的石墨精矿产品。该机在几家石墨生产厂进行工业试验，与原生产流程比较，...     

QX300型及其系列倾卸式研磨机的研究

介绍的重点是研磨机的优化设计及其研磨工艺参数的选定，同时简要介绍了ＱＸ３００型及其系列倾卸式研磨机的工作原理与结构特征。     

QX300型及其系列倾卸式研磨机的研究

介绍的重点是研磨机的优化设计及其研磨工艺参数的选定，同时简要介绍了ＱＸ３００型及其系列倾卸式研磨机的工作原理与结构特征。     

高精度研磨机研制成功

近几年来，随着加工技术和材料科学的进步，欧美等发达国家相继使用大型振动式研磨机取代传统磨光设备，并广泛应用自动化技术。近日，苏州法路机械研制成功高精度振动式研磨机，该研磨机与传统研磨设备在结构、工艺、磨介及原理等方面有根本的不同。通过试验研究及设计，选择出最佳的磨料，使之能快捷有效地将工件研磨至ra0．01μm的表面粗糙度，通过改变频率，进行振幅的调节，利用气压原理紧贴加工表面，以适应各种硬度材料的加工。该成果多项优良的性能为我国振动磨机领域的首创，填补了国内该领域空白，     

自动调节装置的发展

本文作者已研制丁一种高生产率的自动调节系统,这里对该系统的外貌及工作性能作了描述。这个装置包括自动调节系统(SAM)的检测仪,研磨机,缺陷位置测定仪和计算机。轧件螺旋形地通过SAM检测头,馈送到研磨机。轧件的位置及旋转角度始终由位置传感器监视着,测出的裂纹深度及它所在的部位存储在计算机內。当轧件的缺陷部分处在磨轮之下时,通过由计算机发出的研磨指令,磨轮精确地磨去缺陷区域。SAM的检测与研磨机的研磨可在同一轧件上同时进行,但两者互不干扰。自动调节装置的研磨轮也有所进展,它行40公斤/小时的高切削量且有较高的研磨率。本装置有40—60P/小时的功率。     

立式螺旋活套的设计分析

立式螺旋活套适用于φ114 mm以下的焊管机组,文章介绍了立式螺旋活套的组成、功能及工作原理,给出了主要参数的确定过程,阐述了装置的设计特点,为立式螺旋活套的设计提供了理论参考.     

祥光铜冶炼厂冰铜研磨机的安装

介绍了冰铜研磨机的安装工序,详细叙述了施工要点、精度要求、使用的器具和人员安排等.     

祥光铜冶炼厂冰铜研磨机的安装

介绍了冰铜研磨机的安装工序,详细叙述了施工要点、精度要求、使用的器具和人员安排等。     

基于旋转装取料的立式淬回火热处理生产线的设计与应用

介绍了航空锻造零件热处理用的基于旋转装取料的立式淬回火生产线的结构特点、设计方案及使用状况,重点介绍装取料操作机、立式淬火加热炉、淬火油槽、清洗槽和立式回火炉的设计及其特点,总结了航空锻造零件热处理生产线的使用效果及其在技术上的应用价值。     

立式喷缝换热器在锌熔化炉余热回收中的应用

介绍了立式喷缝换热器的工作原理、特点、流程及热工参数等,立式喷缝换热器在韶冶锌熔化炉上的应用情况,以及取得的经济效益和节能效果。     

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。     

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。     

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。     

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.