铝金属基板的制备及性能

利用阳极氧化方法研制了应用于高密度封装中的铝金属基板。对其性能进行了测量。结果表明 ,在草酸电解液中获得的阳极氧化铝基板的膜层具有良好的电阻率 ,可达到 1× 10 1 4～ 1× 10 1 5Ω·cm数量级。其介电常数低于 10 ,随氧化膜层厚度增加而减小。对膜层进行的后续封孔处理提高了膜层的绝缘性能及耐蚀性。提高成膜温度有利于改善阳极氧化铝基板的耐热震性能     

铝合金牺牲阳极研究进展

针对国内外铝合金牺牲阳极的研究和使用情况，回顾性地分析了铝合金牺牲阳极的发展过程；综述了合金元素和热处理工艺对铝合金牺牲阳极的电化学性能的影响及铝合金牺牲阳极的溶解活化机制等方面的最新研究成果；指出了铝合金牺牲阳极研究存在的问题及发展方向。     

国内铝合金阳极氧化工艺专利分析

铝合金是一种轻金属材料,其以铝为基体,通过添加其他合金化元素而形成。由于铝合金具备质量轻、硬度高、导电导热性能优异等特点,因此被广泛应用于航天、车辆、电子产品等领域。阳极氧化是一种传统的强化铝合金表面的工艺,可提高其耐腐蚀、耐磨、硬度等性能,并赋予其良好的外观。本文以中国发明专利数据库中近20年铝合金阳极氧化工艺相关专利申请为基础,整理阳极氧化工艺对铝合金的作用,并通过构建合理的检索式获取相关数据,分别从申请趋势、国内重要申请人和阳极氧化铝合金性能分布方面进行分析,旨在为行业发展提供相关建议。     

电池用铝合金阳极材料研究的新进展

铝阳极正朝着电位更负、利用率更高以及抗铝中杂质干扰的方向发展。从铝电池阳极的活化机理、添加的合金元素以及电解液、缓蚀剂对阳极性能的影响等方面，综述了国内外电池用铝合金阳极材料研究的应用概况和新进展。     

海洋装备防腐用镁合金牺牲阳极的研究进展

采用牺牲阳极进行大型金属结构的腐蚀防护具有易维护、无需外加电源等诸多优点,现代蓝色经济的发展促进了镁合金阳极在海洋装备防腐中的应用.综述了牺牲阳极的防腐原理及其海洋防腐应用时的性能要求;继而分析了典型镁合金阳极材料的化学组成、性能特点及海洋环境中服役行为的影响因素;探讨了改善镁合金牺牲阳极的途径、新型牺牲阳极材料的发展...     

牺牲阳极材料及其在金属防腐工程中的应用

牺牲阳极材料是一类特殊的电化学功能材料，在金属防腐工程中应用广泛，文章综述了牺牲阳极材料的研究现状，介绍了目前常用的锌基，镁基和铝基等三种牺牲阳极材料的基本化学成分和性能特点，讨论了合金元素的作用，并对牺牲阳极的一些新发展和应用情况作了说明。     

铝箔连续有氧化生产工艺

介绍了铝箔卷材的连续阳极氧化工艺,在实践的基础上优化了各工序的工艺参数,探讨了工艺因素对阳极氧化效果的影响。     

阳极氧化工艺对冷热循环冲击后2A12铝合金耐腐蚀性能的影响

利用扫描电镜、裂纹密度测试以及电化学工作站研究了不同的阳极氧化工艺对冷热循环冲击之后2A12铝合金耐腐蚀性能的影响.结果表明:阳极氧化时间越长或电解液浓度越高,冷热循环冲击之后膜层表面的开裂现象越严重,氧化膜的耐腐蚀性能变差.当阳极氧化电压过低时,虽然冷热循环冲击之后膜层表面无裂纹产生,但所制备的阳极氧化膜偏薄,达不到...     

铝箔连续阳极氧化生产工艺

介绍了铝箔卷材的连续阳极氧化工艺，在实践的基础上优化了各工序的工艺参数，探讨了工艺因素对阳极氧化效果的影响。     

Al-Zn-Mn-Si-Mg系压铸铝合金阳极氧化工艺

在传统铝合金阳极氧化电解工艺基础上,添加草酸、酒石酸和柠檬酸等形成硫酸-有机酸混合体系氧化处理液,对Al-Zn-Mn-Si-Mg系压铸铝合金进行阳极氧化处理,探索阳极氧化工艺参数和有机酸种类对氧化膜微观形貌、耐腐蚀和耐磨性能的影响.研究结果表明：在硫酸质量分数为10%、氧化电压为18V、氧化时间为60 min、氧化温度为20℃的条件下,与纯硫酸体系相比,混合酸体系能显著增加Al-Zn-Mn-Si-Mg系压铸铝合金阳极氧化膜厚度,提高氧化膜的耐腐蚀性能和耐磨性能;其中10%硫酸-15%柠檬酸混合体系(百分数均为质量分数,下同)下的氧化膜耐腐蚀性能较强,10%硫酸-10%酒石酸体系下的氧化膜耐磨性能较优.     

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.