异步轧制对高压电解电容器用铝箔织构的影响

利用异步轧制技术对高压电解电容器用高纯铝进行冷轧,研究了异步轧制参数对铝箔冷轧织构的影响.结果表明:异步轧制的搓轧区效应,可使铝箔形成不同于同步轧制的6种主要织构的含量与分布.慢辊侧的织构总体含量高于快辊侧总体含量;S{123}(634)织构、C{112}(111)织构的变化趋势相同,立方织构{001}(100)、旋转立方织构{001}(110)的变化趋势相同;Goss织构含量较低,且对快慢辊、形变量、速比都不敏感.织构的体积分数对速比敏感,同时调整速比与终道次形变量,可提高冷轧织构的含量.结合实际要求形变量,速比控制在1.06和1.13,可获得含量高于同步轧制的冷轧织构.     

张力异步轧制对高压电解电容器阳极铝箔织构的影响

研究了张力异步轧制参数以及再结晶退火对高压电解电容器用高纯铝箔织构的影响.结果表明:张力异步轧制条件下,快、慢辊各织构的含量随速比的变化不明显,立方织构含量不高,而S织构和C织构的含量增加.再结晶退火后,张力异步轧制铝箔的快、慢辊侧立方织构、旋转立方织构以及有利织构之和较无张力条件均有所增加.     

无取向硅钢异步冷轧织构沿厚度的演变

对2.2 mm厚常化后无取向硅钢(%:0.004C、3.1Si、0.33Al),以速度比为1.19异步轧制到0.5 mm厚,用取向分布函数(ODF)定量研究了异步冷轧织构沿厚度的变化。结果表明:常化后的无取向硅钢板材沿厚度方向的织构类型发生了明显的变化,中心侧反高斯织构较强,在异步冷轧后继续保持了这种状态,而表层和次表层高斯织构在冷轧后消失;冷轧后板材在快慢辊侧的织构类型没有变化,但强度发生明显的变化;异步冷轧织构沿厚度方向呈非对称分布;反高斯织构在慢辊侧的强度高于快辊侧的强度,{111}〈112〉织构出现中心低两侧高的现象,慢辊侧略高于快辊侧。     

异速比对异步轧制AZ31镁合金板材组织和织构的影响

采用不同异速比对AZ31镁合金板材进行异步轧制,并将轧后样品进行显微组织和X射线衍射分析,研究异速比对镁合金板材组织和织构转变的影响.结果表明:异速比的变化对晶粒形貌影响较大但晶粒细化效果不明显;当异速比为2.800时,板材内出现了长条晶粒;快速辊侧{0002}基面织构强度高于慢速辊侧,且板材两侧表面{0002}晶面的偏转方向相反;异速比对基面织构的强度影响显著,随着异速比的增大,基面织构的强度先增加后下降.这种特殊的织构变化与异步轧制过程中沿厚度方向引入的剪切变形有关.     

形变对无取向硅钢冷轧织构的影响

研究了经常化处理的无取向硅钢[w(Si)=3%]异步冷轧织构随形变量的变化.结果表明,异步冷轧织构随形变量的变化而发生改变,快慢辊侧的织构类型不变,但强度有所不同;随形变量增加,冷轧织构组分逐渐向α织构和γ织构组分聚集;高斯织构{110}<001>组分逐渐减少,反高斯{001}<110>织构组分逐渐增强;{111}<110>织构组分出现最大值;当压下率达到84%时,出现了较强的{001}<120>织构组分.     

摩擦对IF钢铁素体区热轧和退火织构的影响

采用X射线衍射仪分析IF钢铁素体区热轧织构以及退火织构的演化,在实验室热轧机上进行了IF钢的铁素体区热轧,研究了摩擦对IF钢铁素体区热轧、退火织构的影响。结果表明：无润滑轧制时,钢板表层形成强高斯织构组分{110}〈001〉,弱γ纤维织构,导致再结晶织构中高斯组分强度高,γ纤维织构强度低;润滑轧制时,钢板表层高斯织构组分强度降低,{100}〈011〉、γ纤维织构强度提高,退火后γ纤维织构强度提高。钢板中心受摩擦作用影响较小,轧制过程中发展为较强的α和γ纤维织构,退火后γ纤维织构成为主要织构组分。     

轧制方式对SUS430铁素体不锈钢组织和性能的影响

 采用X射线衍射技术和光学显微分析等方法,研究了同步和异步冷轧方式对SUS430铁素体不锈钢微观组织、织构演变以及力学和成形性能的影响。结果表明,与同步冷轧相比,由于异步轧制剪切变形的引入,可使异步冷轧板材的平均晶粒尺寸减小。在同步冷轧过程中,其二次冷轧再结晶织构为完整的γ纤维织构,导致铁素体不锈钢的最终性能优于同步一次冷轧;而在异步冷轧过程中,异步一次冷轧再结晶织构为强点{111}<[1][1]2>的γ纤维织构,异步二次冷轧再结晶织构属于随机取向织构,其结果是异步一次冷轧板材的性能优于异步二次冷轧。综合分析表明,与异步二次冷轧方式相比,同步二次冷轧方式有利于铁素体不锈钢性能的提高。     

异步轧制对SUS430铁素体不锈钢织构和深冲性能的影响

利用X射线衍射技术和金相显微镜观察等手段,研究异步轧制工艺对SUS430铁素体不锈钢组织织构与深冲性能的影响。结果表明:异步轧制技术可以适当细化再结晶晶粒,但是晶粒大小、分布不均匀。织构分析表明,采用异步一次冷轧工艺沿着板厚方向可获得均匀、完整的γ纤维织构,但强度相对较弱,而应用异步二次冷轧,经过两次退火工艺,再结晶织构弱化,获得接近随机的取向织构。综合分析表明,异步一次轧制有利于提高材料的深冲性能。     

冷轧变形量对Ti+P-IF钢微观结构的影响

采用金相组织观察、TEN分析和织构测试等手段,对Ti＋P—IF钢在不同冷轧变形量下再结晶组织和织构的变化规律进行了研究。结果表明,随着冷轧变形量的增加,Ti＋P—IF钢再结晶组织中晶粒尺寸逐渐减小,第二项粒子呈方向性趋势排列,织构组分由高斯织构和旋转立方织构向γ织构转变。     

B对含P高强度无间隙原子钢{111}面织构的影响

借助光学显微镜(OM)、X射线衍射(XRD)技术及电子背散射衍射(EBSD)技术,分析了2种含P高强度无间隙原子(IF)钢的热轧组织和热轧、冷轧及退火织构,结果表明:不含B与含B的高强IF钢热轧后,均得到多边形铁素体,但不含B热轧板晶粒尺寸较大。2种钢热轧板织构均比较散漫,γ纤维织构强度较弱,而不含B的IF钢经过80%大变形量冷轧以后,获得强的γ纤维织构,{111}面织构的体积分数达到41.41%,而含B的IF钢冷轧后{111}面织构的体积分数为33.83%。含B的IF钢冷轧后{112}110织构组分的体积分数比不含B的IF钢要高。2种实验钢在810℃退火60~180s以后,{111}面织构强度进一步增强,不含B的IF钢退火120s后{111}面织构的体积分数最大达到72.8%,而含B的IF钢退火120s后{111}面织构的体积分数最大达到66.6%。     

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.     

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.     

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.