TRT顶压控制系统及其安全性的研究与优化

介绍了天钢1~#TRT顶压控制系统,对现有的顶压控制系统进行了分析,在原有差压调节模式的基础上增加了顶压调节模式,将实际操作改为差压调节与顶压调节两种互选模式,提高了系统的发电效率;对旁通阀组的控制进行了优化,优化后极大地提高了系统的安全性,保证了炉顶压力的稳定,延长了设备的使用寿命,产生了较高的经济效益。     

提高转炉护炉效果的实践

从转炉耐材的损害机理入手,分析了耐材的损耗机理,探讨了炉渣的优化机制,对炉渣的组成及渣料的使用进行优化,对溅渣的工艺进行了改进,实现了转炉护炉的提升,延长了转炉的使用寿命,降低了耐材的损耗,降低了转炉工序的成本。     

废水处理站自动控制系统的应用

介绍了邯钢冷轧废水站的配套项目废水处理站的自动控制系统,主要从自控设备组成、网络控制系统等方面论述了控制功能的实现,该系统的应用为ERP的数据采集提供了很好的保证,提高了电气控制的集成度和可靠性,简化了控制环节,提高了生产效率.     

浅议矿脉变化规律与探矿方法

概要介绍了樟东坑矿区的主要地质特征,在前人工作的基础上,对矿床的基本特征(尤其是矿脉的变化特征)进行了分析、探讨和总结;利用这些特性及其变化规律,采用一些新的探矿方法不但找到了一些隐伏盲矿,增加了地质储量,延长了矿山的服务年限,而且降低了探矿费用,减少了采矿的盲目性,节约了成本,增加了经济效益。     

采用Boost技术优化企业数据备份保护架构

为了解决大型制造企业数据中心架构变更后,在数据保护方面所面临的多种难题,对适用的数据保护技术进行了研究探讨.最终实现了企业数据保护平台架构的转型升级,提升了平台自身的安全性,改善了备份数据的传输架构,备份效率提升了10倍以上.实现了备份任务的集中智能管理,节约了备份窗口,实现了备份资源的一次性分配与自动回收,释放了备份...     

ACS6000SD变频器在粗轧机主传动系统中的应用

济钢中厚板厂3500线粗轧机改造主传动系统采用ACS6000SD变频驱动系统,系统的整流侧和逆变侧采用了对称结构,降低了维护难度;采用了IGCT技术,保证了系统的性能响应;使用了DTC技术,提高了系统的鲁棒性。这种交直交系统做到了对电网的最少谐波运行,既减少了对电网的污染,又省去了无功补偿系统的投资。     

工业机器人在鞍钢型钢生产线的设计与应用

根据鞍钢股份有限公司型钢生产线工艺实际,制定了机器人硬件设计方案和机器人软件实现方案,实现了工业机器人自动贴标喷码技术在型钢生产线的应用.该系统的应用满足了产线工艺要求,提升了产线生产效率,提高了产品标识的准确性和可追溯性,贴标准确率和喷码准确率均达到了99％,实现了危险岗位无人作业,作业周期缩短了25％;同时,实现了产品标识的统一规范性,提升了企业产品形象.     

空压机积炭的原因及改进措施

本文分析了影响空压机积炭堆积过快的原因,介绍了生产工艺中存在的问题及改进措施,改进后减少了空压机积炭堆积的速度,延长了空压机部件使用寿命,降低了维修成本,提高了空压机利用率和运行效率,达到节能降耗的目的。     

镁挤压工业及技术发展概况与趋势

经过近20年的快速发展,我国镁挤压工业与技术获得了跨越式进步,不仅兴建了一批现代化的镁挤压企业,投产了一批3600t左右的现代化镁合金挤压机及其配套设备,而且开发了大批新技术、新工艺和新产品,大幅度降低了生产成本和提高了生产效率,拓展了应用领域,成为世界镁挤压大国。本文详细阐述了挤压成形在轻合金材料加工中的重要地位,指出热挤压成形是镁及镁合金材料最重要的加工方法,介绍了国内外镁挤压工业及技术的发展概况与趋势。     

泵池分矿箱旋塞提升机构的改造及应用

原有泵池分矿箱旋塞提升机构操作困难,使用寿命短,研究设计并制作了新形式的旋塞提升机构。经过现场的安装试用,彻底解决了操作困难的现象,排除了故障缺陷,消除了操作时存在的安全隐患,保障了岗位操作人员的人身安全,减少了检修维护的工作量,降低了技术。     

Phantom experiences in mental defective amputees.

The assumption that mental defectives do not experience the phenomenon of "phantom limb" was tested. The results rejected the assumption. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Can clinical colour vision tests be used to predict the results of the Farnsworth lantern test?

Clinicians usually do not have access to a lantern test when making an occupational assessment of the ability of a person with defective colour vision to recognise signal light colours: they must rely on the results of ordinary clinical tests. While all colour vision defectives fail the Holmes Wright Type B lantern test and most fail the Holmes Wright Type A lantern, 35% of colour vision defectives pass the Farnsworth lantern. Can clinical tests predict who will pass and fail the Farnsworth lantern? We find that a pass (less than two or more diametrical crossings) at the Farnsworth Panel D 15 Dichotomous test has a sensitivity of 0.67 and specificity of 0.94 in predicting a pass or fail at the Farnsworth lantern test: a Nagel range of > 10 has a sensitivity of 0.87 and a specificity of 0.57. We conclude that neither the D 15 nor the Nagel Anomaloscope matching range are satisfactory predictors of performance on the Farnsworth Lantern.     

The practice of psychological testing in clinical services in the United States.

Questionnaire responses were obtained from 185 (61% of 304 agencies including VA stations, state mental hospitals, institutions for mental defectives, outpatient clinics, and counseling centers. The median number of different tests was used 26; the range was from 5 to 8. The most frequently used tests are the Rorschach, Draw-A-Person (Machover), Thematic Apperception Test, Visual Motor Gestalt Test (Bender), Stanford-Binet, WAIS, and MMPI in that order. Comparisons are made of the 20 most used psychological tests in each of 3 decades. From Psyc Abstracts 36:02:2HA79S. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Glutamic acid and human intelligence.

"A review of the literature relating glutamic acid medication to the intellectual functioning of mental defectives indicates that positive effects tend to be reported in studies not employing a control group. The few positive studies employing controls contain methodological flaws, rendering their conclusions difficult to accept. The tendency for negative findings to occur in the more adequately designed experiments sheds doubt on the hypothesis that glutamic acid medication has a specifically beneficial effect on intellectual functioning." (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Validity of clinical judgments based on human figure drawings.

The literature establishes that clinicians have routinely been making diagnostic judgments based on techniques of equivocal validity. In a study considering clinical and experimental specifications for a suitable methodology, it was found that Draw-a-Person experts are capable of identifying mental defectives far beyond chance expectations. 4 remaining matched groups (schizophrenics, neurotics, homosexuals, and normals), however, were found not to be identifiable, even after the experts were permitted a 2nd chance to make a correct diagnosis. The expertness of the judges, as predicted from the ranks they were accorded by their peers, was unrelated to their actual performance. (31 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of glutamic acid and social stimulation in mental deficiency.

50 male and 8 female residents of Polk State School for mental defectives were used as Ss. Their IQs ranged from 20 to 66 with a mean of 54, resulting from familial mental defect, abnormal developmental conditions, or post-natal brain damage. 2 distinctly different social environments were used, and L+ glutamic acid was used as the experimental drug, and a placebo for control. The findings showed that L+ glutamic acid did not produce significant improvement in mental functioning, that increased personal attention enhanced mental functioning, and that a greater gain in functioning was made by Ss given added attention but with minimal disruption of the familiar environment. 23 references. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Exceptional Application of Content Uniformity Test and Weight Variation Test in the Japanese Pharmacopoeia 13 revision and usage of these tests for in-process tests

The criteria of Content Uniformity test and Weight Variation test in JP 13 were greatly changed to reduce consumer's risk. The new criteria were set to keep the rate of defectives in lots passing the tests less than the acceptable rate. However, in some cases, the new criteria can not directly be applied to some formulations and several modifications are needed in the criteria. In this report, the several resolution of this problem are represented. The applicability of these tests for in-process tests is also discussed.     

济钢连铸含油浊环水处理技术

连铸浊环回水中含有高浓度悬浮物、油污等容易引起喷淋系统喷嘴堵塞、过滤器滤料板结和偏流,使冷却水供水不足或供水不匀,造成铸坯出现缺陷、甚至次品。在已有设备设施不变的情况下,通过配合使用化学助剂,使浊环水供水水质得到很好的改善,解决了系统存在的系统堵塞等问题,满足了生产高质量铸坯和精轧产品的需要。     

Social deprivation and rigidity in the performance of feebleminded children.

Work by Lewin (1936) and Kounin (see 15: 4231, 4232) had been interpreted as demonstrating that mental defectives evidenced greater rigidity of thinking than normal children of comparable level of mental age. However, another study (see 33: 3220) failed to support this hypothesis and these data were interpreted as pointing to a variable of social deprivation under certain conditions. The present work tested this hypothesis. Mental defective children were evaluated (by case history) as to degree of social deprivation. Ss were required to learn a simple motor task (marble-in-hole game) under 2 conditions of interaction by E. The results generally supported the hypothesis that interaction with an adult constitutes a reinforcing agent to learning to a socially deprived, mentally retarded child. From Psyc Abstracts 36:04:4JI32Z. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Frequent mutation in pX region of HTLV-1 is observed in HAM/TSP patients, but is not specifically associated with the central nervous system lesions

Human T-cell leukemia virus type 1 (HTLV-1) is an etiologic agent of adult T-cell leukemia (ATL) and of HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). Recently it has been reported that defective HTLV-1 provirus was detected frequently in the central nervous system (CNS) lesions of HAM/TSP patients. Here we investigated sequence variations of the pX region of HTLV-1 in the CNS and peripheral blood lymphocytes (PBL) of the same patient. The results analyzing 9-13 clones isolated from each specimen indicated that the pX region is highly variable within a patient with HAM/TSP, and the mutations were found at almost random positions within the sequences analyzed. The frequency and pattern of those mutations did not appear to differ significantly between the CNS and PBL of the same patient, although they differed among patients. Similarly, frequent mutations were observed in an asymptomatic carrier of HTLV-1, although the variability was moderate, suggesting that the high variability of the pX sequence is not a specific event in HAM/TSP. However, one asymptomatic carrier showed much less frequent variations very similarly to an ATL patient; both of them harbored clonally expanded infected cells. Thus the apparent low variability was explained by clonal selection of a single species of the provirus by the clonal proliferation of infected cells. These results clearly indicate that mutations including defectives are not specifically associated with the CNS lesions in HAM/TSP patients, but suggest that the random mutations simply reflect the rate of viral replication in individuals and the variants were not inherited frequently.