66kV直挂式高压动态无功补偿及滤波装置（SVC）在铁合金矿热炉负荷中的应用

介绍了动态无功补偿及滤波装置（SVC）对66 kV供电矿热炉负荷进行的无功补偿及谐波治理技术,实际证明,采用66 kV直挂式动态无功补偿装置（SVC）在高压侧进行无功补偿及谐波治理可行,并对治理后产生的经济效益进行了分析,效果明显.     

35 kV动态SVC无功补偿系统研究

介绍了无功就地补偿技术的发展状况,分析了无功功率的危害,对静止型动态无功补偿装置(SVC)进行了探讨,同时对TCR型SVC无功补偿装置进行了详细的研究,通过分析中板厂35kV供电系统,交流变频电机传动对系统产生的谐波和电压畸变,应用TCR FC型SVC无功补偿装置大大改善了供电网的质量,达到理想的补偿效果。     

矿山提升系统高压无功动态补偿的应用

对矿山提升系统负荷特性和功率因数的特点进行分析,并结合工程实例,对高压静止型无功动态无功补偿装置(SVC)原理、技术特点作了重点探讨.     

静止型动态无功补偿装置(SVC)补偿容量的确定

主要对6kV静止型动态无功补偿装置(SVC)的原理进行分析,确定了静止型动态无功补偿装置的补偿容量。能实时地根据电网功率因数和电压的变化状况,动态跟踪补偿6kV供电系统的无功。     

用于精炼炉的动态无功补偿装置设计

针对某钢厂精炼炉负荷进行电能质量治理,采用动态无功补偿装置(SVC),重点介绍了SVC装置参数设计思路,对SVC装置投入后的电能质量效果进行分析,提出后期改善方案。     

静止型动态无功补偿装置在工业电网上的应用

SVC补偿技术是当前无功补偿领域中最具活力和发展前途的一项技术，已日益受到关注并得到广泛应用。随着电力电子技术及计算机控制技术的发展，各种新型的自动、快速无功补偿装置相继出现，也大大推动了SVC补偿技术的进步。本文对由可控硅供电的大型轧机(及类似负荷)造成的冲击电压波动、谐波、电压闪变等作了简要分析：说明了传统无功补偿方法存在的问题；着重阐述SVC补偿装置的特点、类型、功能，以及工程设计及应用中应注意的一些问题。     

大型热连轧机主传动供电的一种创新方案的讨论

对大型热连轧工程中普遍采用交直交变频传动技术或交交变频加动态无功补偿装置（SVC）传动技术两者组合型的方案进行了讨论，利用精轧机组上的客性无功动态补偿在其他机组采用交交变频装置产的感性无功冲击，从而使产生的电压波动能满足电网的要求，是对大型热连轧生产线主传动供电方案的一次大胆创新。     

SVC技术与工业节能的关系浅析

SVC无功补偿具有快速、动态、平滑、连续、可正、可负的补偿特性。SVC补偿技术应用在工业节能中能发挥很好的作用。电力系统中采用SVC能提高输送能力,保证电网安全稳定运行。介绍了中国第1部SVC国家标准产生的过程。SVC国家标准的发布将会促进SVC技术的进步和其产业的发展,实现降低耗能的目标。     

SVG在风电场的应用

针对现在风电场的无功补偿问题,结合江西某风电场需要采用的无功补偿装置方案,对目前风电场较多采用的TCR（晶闸管控制电抗器）和MCR（磁阀式可控电抗器）型SVC、SVG（静止无功发生器）、SVG＋FC（补偿电容器组）等多种动态无功补偿装置的原理进行了阐述和详细的对比分析,同时结合项目单位对工程造价的要求,确定了风电场无功补偿装置最终采用SVG＋FC型。     

动态无功补偿（SVC）装置在冶金供电网络的应用

介绍了动态无功补偿（SVC）装置在通钢电炉供电系统的成功应用，有效地改善了功率因数，抑制了谐波、稳定了系统电压和提高了供电质量，取得了良好的经济效益。     

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)     

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。     

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.