软起动器在烧结机混料系统中的应用

软起动器以微处理器为核心，能够产生平滑的电压起动曲线，可任意设置稳定的起动电流，并具有多种保护。张钢24m^2烧结机混料系统应用软起动器后，交流电机起动平滑、无噪声，年节电5．6万kW．h，经济效益约2．4万元。     

PLC及变频软起动器在过钢车系统的应用

文章介绍S7-200PLC及LQ全数字双向双级变频软起动器在过钢车系统的应用,并阐述在运行中出现的问题及解决办法.     

软起动器在热轧机组交流电机控制中的应用

本文介绍软起动器在热轧机组交流电机控制中的应用,软起动器能够平滑地起动电机,可解决大功率交流电机起动时对电网的冲击;软起动器旁路接触器使生产更加节能降耗;同时,也介绍了软起动器在铜带坯热轧机电机控制回路中的应用,通过PLC逻辑控制,提高了设备的自动化程度、可靠性及安全性。     

单机架双卷取铝带可逆热轧机传动电控系统

本文主要介绍采用DCS500B全数字直流传动系统、ACA600交流多传动控制系统和S-7程控器等完成的1300mm铝扳带热轧机电控系统，详细说明了系统硬件、软件设计以及辊道电机的控制思想。     

交流电动机的软起动技术

交流电动机的软起动是一种综合技术，它克服了发鼠笼异步机传统降压起动方式的许多缺点，通过采用软起动器可以实现交流电动机的软起动。本文介绍了交流电动机主要的几种软起动方式以及交流电动机软起动的特点，并指出了软起动器的其他一些应用。     

一个全数字化交流永磁伺服系统

介绍了开发的全数字交流伺服系统的组成、基本原理及软、硬件结构。通过与模拟交流伺服系统的比较，说明了全数字交流伺服系统可编程能力强、系统稳定性好、系统性能提高等特点。     

软起动器在生产中的实际应用

论述了软起动器使用的必要性及特性，介绍控制器的各种保护功能。以及在实际生产中的应用。     

绕线式高压电动机用新型软起动器

介绍WZR无刷自控电机软起动器在焦化厂粉碎机高压绕线式电动机上的应用情况，简述其基本原理和特点及其应用效果。     

全数字控制技术在棒线材连轧生产线电气传动系统中的应用

本文以ＳＩＭＯＲＥＧＫ６ＲＡ２４全数字直流调束装置，ＳＩＭＯＶＥＲＴＰ电压源变－－直－变变频器型全数字交流变频调速装置以及ＳＩＭＯＶＥＲＴＳ电流源交－直－交变频器型全数字大功率交流变频调速装置为例，介绍全数字控制技术在棒线材连轧机生产线电气传动系统中的应用，说明其硬件配置，软件组态、控制原理及特点。结果表明，应用该技术能有效提高电气传动系统的工程设计，安装调试、操作运行及维护检修工作的效率，优化系     

液态变阻软起动器在高压鼠笼型电动机上的应用

通过对几种起动方式的计算、分析,介绍了GZYQ认态变阻软起动器的实际使用情况,为改善大型高压鼠笼电动机在过程大中电流对电网和设备的冲击,提供了一个切实可行的起动装置。     

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。     

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。     

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.     

Quality of life of relatives of mental patients

Usage of quality of life of psychiatric patients' relatives as the parameter of estimation of the quality of psychiatric care is considered. By means of standard questionnaire elaborated by the authors as well as by means of both individual and group conversations the quality of life was analyzed in 40 relatives which lived together with psychiatric patients. Different spheres of their life and difficulties (financial, social-psychologic, production) were examined in families with such patients. The defects of psychiatric care that had direct influence on the quality of life of the psychiatric patients' relatives are outlined.     

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)