连铸水处理控制系统的设计与应用

济钢第三炼钢厂精炼连铸水处理系统采用PLC和上位监控软件，自动控制系统采用MOMEN—TUM和QUANTUM系列的控制器，实现了数据自动采集、处理、工艺画面显示、报警等功能，方便了管理，系统运行安全可靠。     

SIEMENS SIMATIC PCS7在原料输送工序自动化监控系统中的应用

以中国铝业山西分公司80万吨氧化铝工程原料予均化堆场为工艺对象,应用SIEMENS SIMATIC PCS7的强大功能,提出一种基于全集成自动化思想,适用于分散过程控制、面向工艺的冗余过程控制系统。     

浅议加压浸出釜液位的过程控制

简要说明了加压酸浸工艺中，加压浸出釜过程控制的关键——液位控制的实现方法、存在的问题以及解决的方案。     

DCS网络典型故障案例分析

网络是DCS的重要组成部分,用于传输数据和指令。若出现故障,操作人员无法了解现场的实际情况,也无法操作设备,因此网络故障对于DCS来说是致命的。为了减小网络故障带来的风险,采用了双网冗余的设计,并对在实际的DCS运行中出现的典型网络故障案例进行了分析。     

莱钢苯加氢安全保护系统

主要介绍莱钢苯加氢安全保护系统采用全集成冗余和系统自我检测与诊断技术,实现粗苯中纯苯、甲苯、二甲苯等化学品的有效分离,大大提高产品的回收率和纯度,减少了以往酸洗工艺带来的环境污染。     

INF190DCS在首钢电力厂3号机组的应用

首钢电力厂3号机组采用了INFI90DCS集散控制系统。该系统的冗余结构满足了连续生产的要求；友好的人机接口方便了操作和组态；开放的系统特性提高了生产管理水平。     

冗余系统远程异地切换的探索

利用网络协议与传输媒体的二次转换等技术,对冗余系统实施远程、异地切换,解决故障下对生产系统的运行保障和故障诊断。     

宝钢原料场高可靠性控制系统的应用

对宝钢原料场的自动化控制系统作了介绍。从提高工业控制系统可靠性的角度出发,对原料控制系统中涉及到的双机热备冗余PLC、光纤IO网络、以太网络、控制程序编制、HM I部分可靠性设计等问题做了详细介绍。     

新区脱硫脱硝技改项目冗余控制系统的设计与应用

本文主要介绍了基于冗余技术的脱硫烟气控制系统的设计方案,阐述其系统冗余设计以及操作站与PLC冗余通信的实现方法,并提出了控制系统冗余技术的硬件配置的典型应用,通过实现电源冗余、系统冗余以及通讯冗余的方式实现整个控制系统的全方位硬件冗余,在自动化系统的设计过程中可根据不同的需求选择性价比高的冗余方式。     

PCS7控制系统在中铝广西公司煤气厂的应用

中铝广西分公司煤气厂成功应用了两套德国西门子公司的最先进的过程控制系统PCS7,大大提高了煤气厂的自动化水平.本文以煤气厂造气岗位的系统为例,介绍了该系统的构成、功能.     

钢管生产短尺合同与非定尺合同组批优化算法

提出了一套解决钢管生产中短尺合同和非定尺合同组批优化问题的启发式算法.其中短尺合同组批优化算法,实现了客户要求的短尺率尽量降低,短尺合同中定尺部分尽可能长,非定尺部分尽可能短,热区切割长度尽可能长,管坯长度尽量长以及满足的合同数尽量多的目标,从而实现短尺合同的优化组批.非定尺合同组批优化算法则实现了对6～12 m,9～12 m以及其他任意规格非定尺合同提供不同的切割方法,实现尽可能不产生废料,交货长度尽量一致的目标,从而实现对非定尺合同的的优化组批.     

New species of Aeromonas isolated in Cuba

One hundred and fifty-five strains of Aeromonas isolated in the stools of children under 5 years presenting with acute diarrheal disease were studied. Using the Aerokey II system for the identification of species, 47 strains were identified as Aeromonas caviae, 58 as Aeromonas hydrophila, 23 as Aeromonas veronii biovar sobria, 14 as Aeromonas trota, 9 as Aeromonas veronii biovar veronii, 2 as Aeromonas jandaei and 2 as Aeromonas shubertii, Emphasis is placed on the advantages of this method which allowed for the classification of new species not identified previously in our country.     

浅谈企业自主创新之路

自主创新是相对于技术引进、模仿而言的一种创造活动,是指通过拥有自主知识产权的独特的核心技术以及在此基础上实现新产品的价值的过程.企业自主创新应以深化改革为动力,以技术改造为重点,以技术引进为辅助,以技术发明为后劲,以“讲理想、比贡献”活动为平台,以增强员工素质为根本,达到自主创新之路.     

A possible correlation between the blood leukocyte formula and the use of glucocorticoids as growth promoters in beef cattle

The frequency of lumbar disc hemiation amounts to 5.1% with the male and 3.7% with the female population. Because of the often long-time pain-conditional impairment of the patients as well as the varied therapy-possibilities, the treatment of the ruptured lumbar intervertebral disc represents a special challenge. The indication to the operation for the lumbar disk-herniation results from the malfunctions of the nerve roots, the pains, as well as the temporal course of the symptoms. New and important developments have given the introduction of micro-surgical operation-techniques into the orthopedics. This development has led to it that many orthopedists and neurosurgeons the micro-surgical operation-technique prefers. Important for the micro-surgical lumbar discectomy is the operation-microscope, a good preoperative diagnostics as well as a particular micro-surgical operation-instrument. Through the different enlargement-possibilities of the operation-microscope, all anatomical structures can increase and are done visibly for the surgeon as well as the assistant. Intraoperative injuries of the dura as well as the spinal-nerves are certainly avoided hereby. The micro-surgical discectomie requires no longer time like the conventional operation of the disk. The postoperative stay in the hospital as well as the time of the work-incompetence is reduced. Postoperative inflammations of the disk-area as well as renewed operations are rarer with the microchirurgischen technique. If an operation is necessary, so this should not be out-hesitated too long in order to avoid bed results.     

A different perspective on androgyny: Evaluations of masculine and feminine personality characteristics.

Hypothesized that androgynous Ss would be liked best and perceived as most adjusted (Exp I) and also be perceived to be as instrumental as masculine Ss and as expressive as feminine Ss (Exp II). 179 undergraduates served as Ss in Exp I and 160 undergraduates served in Exp II. Personal Attributes Questionnaires ostensibly filled out by others were the stimuli evaluated. These stimuli were constructed so that the stimulus persons (SPs) were classified as either androgynous, undifferentiated, masculine, or feminine. Male and female Ss evaluated the SPs on dimensions of likeability, adjustment, expressiveness, instrumentality, masculinity, and femininity. Results demonstrate that androgynous persons, regardless of gender, were liked best and perceived as most adjusted, whereas undifferentiated persons were liked least and perceived as least adjusted. Masculine and feminine persons, regardless of gender, were rated midway between androgynous and undifferentiated persons and generally were not evaluated differently on these dimensions. Evaluations of SPs on stereotypically gender-related dimensions revealed that androgynous persons were seen to be as highly instrumental as masculine persons and as highly expressive as feminine persons, but generally less masculine and feminine than sex-typed persons. Implications for self-fulfilling prophecies in social behavior are discussed. (40 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

同步电动机全数字励磁装置改造

文章介绍了同步机励磁控制系统,通过励磁装置改造,能够实现电机启动过程中的转子滑差控制,电机的失步检测和保护,准确灭磁等功能。改造后的励磁控制系统具有可靠性好,控制精度高,现场使用和维护方便等优点。     

冶建施工项目效益审计的方法探讨

文章以二冶酒钢项目为研究对象,运用效益审计相关理论,确定其审计任务和目的,采用检查、询问、函证、监盘、计算、分析性复核等效益审计方法,对该项目预算收入的准确性、实际成本的完整性、资金到位的可靠性情况进行核实,找出项目经营中存在的问题,并有针对性地提出一系列的改进意见和建议。     

Hygienic standardization of the length of children''s work using personal computers

Medical monitoring of patients is intended for controlling their physiological parameters, providing information to the medical staff as of critical, precritical physiological values, as well as for accumulating information on the patients' condition in time (trends). The existing monitoring systems require further improvement by expanding the types of measuring channels connected to them, providing a definite service, adaptability to a concrete medical institution. The basic orders to develop and produce such systems were got from the leading medical institutions of the Republic of Udmurt. A list of physiological parameters requiring monitoring, specifications of transducer systems and measuring channels (as a table), as well as demands by for channels, as required, records written down into the trend, as results is given. Possible variants of the design and use of computer monitors are provided.