分动型翻转冷床技术开发及生产实践

文中着重介绍水钢连铸出坯系统改造设计时，针对联动型翻转冷床存在设备过重、电控要求高等问题，开发研制出设备重量轻、电控简单、投资省、操作灵活的分动型翻转冷床，及其结构特点和生产实践。该技术对新建方坯连铸机和线材、型材轧钢技术的企业，为进一步降低基建投资和提高铸坯质量是值得推广应用的新技术之一。     

用于生产小棒材的冷床

本文介绍了两种于生产小棒材的冷床结构及其特点。     

多品种步进冷床的研制

本文主要叙述了中小型多品种步进冷床的一种设计思路，并对冷床的工艺参数的确定以及设备组成结构等作了详细的计算和阐述。     

宽厚板生产线上冷床长度的优化方案

简要介绍了宽厚板车间的冷床长度与钢板布料的优化选择。     

等离子冷床熔炼钛合金

等离子弧冷床熔炼钛及其合金的应用在最近几年里已经达到了生产规模,炉子熔炼和铸造锭坯的能力高达5t.除了利用等离子枪代替电子束枪之外,等离子弧冷床熔炼和电子束冷床熔炼都是在惰性气体的大气压力下,而不是真空内进行的,往熔炼炉内供给的原料能够包括松散的海绵钛、压制出来的块状原料、回收的残料或者报废的锭坯     

步进式冷床在250轧机生产线上的应用

本文简要介绍了在安钢２５０生产线上用步进式冷式改造旧斜辊式冷床的情况，差重阐述了冷订改造的必要和可行性及其此次改造的主要特点，对此类老生产线的改造挖潜具有借鉴意义。     

冷床制动板自控系统中的参数匹配

目前,棒材连轧生产线的冷床区域一般采用制动板装置。制动板装置位于分段剪切机和冷床之间,示意图如图1。　　当连轧成品机架输出的棒材,由Ｓｎ后的冷床图1　冷床制动板区域设备布置示意图Ｓｎ—分断剪切机;ＲＴ—输入辊道;ＢＰ1～ＢＰ4—制动板;ＣＢ—冷床;ＨＭＤ—热金属检测器;Ｈｎ—连轧成品机架输入辊道ＲＴ输送到制动板区域时,制动板的作用是分离Ｓｎ剪切后的棒材,接收并制动棒材,最后将棒材送到冷床中合适的位置。棒材连轧机生产线制动板的控制系统采用计算机自动控制。制动板自控系统中的参数匹配直接影响到冷床成品的工况和收得率…     

中型轧钢厂的新型冷床—变步距冷床

中型轧钢厂的新型冷床──变步距冷床王晓玲（包头钢铁设计研究院，邮编：０１４０１０）Ｖａｒｙｉｎｇｐｉｔｃｈｃｏｏｌｉｎｇｂｅｄａｎｅｗｔｙｐｅｃｏｏｌｉｎｇｂｅｄｆｏｒｍｅｄｉｕｍｓｃａｌｅｒｏｌｌｉｎｇｍｉｌｌ￥ＷａｎｇＸｉａｏｌｉｎｇ（Ｂａｏｔｏ...     

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.     

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.     

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.     

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。     

翻板机构的设计及其应用

文章介绍翻板在钢管横移中的使用效果,通过翻板运动机构的分析和翻板力学模型的建立,用数学分析的方法通过推导计算给出了翻板各参数的计算公式,并根据实例分析了翻板的优缺点和使用效果.同时对翻板机构的传动形式进行了分析和阐述.     

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.     

工程量清单报价特点及在工程管理中的应用

文章介绍了工程量清单报价的特点,并根据这些特点讲述了实施工程量清单报价应结合企业定额并采用不平衡报价法等技巧进行,以提高中标的机率。工程中标后,应对工程成本费用要素,如人工费、材料费和机械费等进行严格管理,对工程施工过程中发生的设计变更或其他与合同和工程量清单不一致的地方进行记录并签证,为以后的索赔作准备。     

论数字图书馆的建设与服务

文章讨论现代信息社会数字图书馆的特点和发展意义,提出如何加强数字图书馆的建设和管理变革以及人才的培养,提高服务创新能力,从而实现现代图书馆的社会价值。     

Toward a theory of hypnotic behavior: Effects on suggestibility of defining the situation as hypnosis and defining response to suggestions as easy.

96 Ss participated in a 2 X 2 factorial experiment which was designed to assess the effects on suggestibility of: defining the situation as hypnosis or as control, and defining response to suggestions as easy or as difficult. The dependent variables consisted of responses to 8 standardized test suggestions (Barber Suggestibility Scale). Ss told "You are in the hypnosis group" were more responsive to suggestions than Ss told "You are in the control group." Ss told that it was easy to respond to test suggestions were more suggestible than Ss told that it was difficult. The suggestibility-enhancing effects of the independent variables were additive: the level of suggestibility was highest when the situation was defined as hypnosis and the test suggestions as easy; next highest when either the situation was defined as hypnosis or the suggestions as easy; and lowest when the situation was defined as control and the suggestions as difficult. (PsycINFO Database Record (c) 2010 APA, all rights reserved)