IPC在铁合金电炉配料系统中的应用

阐述了在铁合金矿热炉生产配料系统中ＩＰＣ的控制方案、硬件结构及软件设计，介绍了ＰＣＳ－５配料控制器和移动式超声波探头料位仪的使用效果。     

超声波料位计

超声波料位计测量料位的原理与回声测量距离的原理相同。它是依靠安装在料仓顶部的探测器不断发射固定频率的超声波,经被测物料表面漫反射,其可测定的反射回波部份由探测器接收,根据超声波往返时间即可换算出反射物料表面与探测器发射面之间的距离,经以下公式换算,即可得到料仓料位的高度。     

超声波料位仪在烧结生产的实际应用

本文介绍超声波料位仪在烧结生产的实际应用及常见故障。     

超声波料位仪在烧结生产中的应用

介绍了超声波料位仪技术在烧结生产的实际应用以及常见故障分析和系统调试。     

超声波料位仪在高温料仓的应用

分析了超声波料位仪在高温料仓中的特点及应用技巧，并提出了应注意的问题。     

宣钢2 500 m3高炉喷煤仪表系统

宣钢炼铁厂通过安装在2500 m3高炉喷煤仪表系统中的雷达料位计、超声波料位计,使操作者可以方便快捷、连续测量物位,与现在大量使用的基于射线穿透能力而显示物位的仪器相比,具有使用安全、安装方便、维护量小等优点,为生产安全、稳定、顺行提供了有力的料位测量保障.     

超声波料位计在高炉矿槽的应用及计算槽存量的方法

马钢新１号高炉矿槽上安设了ＤＬＭ５０型数字式超声波料位计,通过建立矿槽内物料堆积的数学模型,计算出了超声波料位计探测高度值对应的槽存量,得到了料位高度与槽存量的对照表,为供料作业管理创造了有利条件。     

超声波料位计在高炉矿槽的应用及计算槽存量的方法

马钢新１号高炉矿槽上安设了ＤＬＭ５０型数字式超声波料位计，通过建立矿槽内物料堆积的数学模型，计算了超声波料位计探测高度值对应的槽存量，得到的料位高度与槽存量的对照表，为供料作业管理创造了有利条件。     

选矿生产过程自动检测仪表一览表

类型名称性能及特点料位测皿仪表电阻式料位计?一射线式料位计超声波料位计气泡管式液位计浮子式液位计简单、便宜,做定点信号器用非接触式,做定点信号,要安全防护非接触式,可连续测量料位接触式、简单、可连续测量接触式、简单、用于清水或矿浆矿石重企计量仪表机械式皮带秤电     

超声波料位计探测高度值与槽存量的换算方法

通过建立矿槽内物料堆积的数学模型，计算了超声波料位计探测高度值对应的槽存量，并进行了实际校验，得到实际料位高度与槽存量的对照表，从而达到指导槽位管理的目的。     

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.     

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)