大冶诺兰达炉及挖修实践

简要介绍了大冶诺兰炉炉衬结构与第一次挖修方案形成过程，小结四次挖修采取的技术措施。     

阳极炉炉口改造

依据阳极炉的实际运转情况,对炉口系统进行改造,论述了改造思路及方案。     

阳极炉炉口改造

依据阳极炉的实际运转情况,对炉口系统进行改造,论述了改造思路及方案.     

直流电弧炉炉底阳极用耐火材料

介绍了直流电弧炉目前流行的导电炉底型、多支接触钢钎型、钢片散热型和水冷钢棒型4种类型的炉底阳极用耐火材料的设计理念和应用情况,并着重剖析了水冷钢棒型炉底阳极用耐火材料的组成结构、理化性能和应用特点,同时还介绍了宝钢150 t超高功率直流电弧炉水冷钢棒型炉底阳极耐火材料的使用状况,指出存在的缺陷并提出改进的方向:改善炉底阳极套筒砖的高温强度和热震稳定性将是提高炉底阳极套筒砖寿命的关键,改善镁钙质干式炉底捣打料的高温收缩和高温耐蚀性将是提高炉底捣打料寿命的关键.     

高炉炉缸炉底结构设计研究

简述了高炉炉缸炉底结构发展的过程及目前国外高炉炉缸炉底所采用的形式；介绍了鞍钢７号高炉炉缸炉底的设计情况，并总结了其采用的陶瓷杯结构和半石墨化碳砖的优点。     

100t转炉活炉底修砌工艺研究

通过对100t转炉活炉底修砌工艺的研究，解决了炉底最后两环只能散料打结、无法修砌的难题，杜绝了炉底打结部位发生漏炉的工艺事故。     

直流钢包炉技术分析及实验初探

概述了直流钢包炉的优点及国内外的发展现状。并在１８０ｋＶ．Ａ小型直流钢包炉上进行了可行性实验。结果表明，炉底电极接触式阳极的直流钢包炉在实践中是可行的。其操作方便、电流导通顺利，电弧稳定燃烧。     

高炉本体炉底炉缸结构设计研究

在影响高炉寿命的诸多因素中,高炉炉底炉缸的使用寿命最为关键的原因之一,本文列出了当前主流的炉底封板和炉缸结构形式,并进行了分析和总结,推荐适合我国高炉特点的技术方案。     

回转式阳极炉的发展变化

回转式阳极炉作为铜阳极炉一个主要类型,经历了近60年的发展历程,单炉设备能力从几十吨到600多吨。从炉体、炉盖及启闭装置、托轮支撑装置、润滑装置、冷却水管、氧化还原风管、驱动装置等阳极炉结构的角度出发,分析了回转式阳极炉结构型式的发展变化过程。     

回转式阳极炉的驱动装置及控制系统

阐述大冶阳极炉驱动系统控制方案 ,利用智能化全数字变流器控制炉体直流电机换向、调速、起停 ,介绍阳极炉操作系统构成 ,利用PLC系统操作、控制炉体及辅助设备并实现与全厂控制网络的通讯联络。     

Kinematics of the pelvic girdle and the thoracic and lumbar segments in the course of the lateral inclinations and rotations of the spine

Physiological displacements of the trunk are the addition of these of the pelvic girdle and thoracic and lumbar spine segments. For a long time (3), this conjunction had been noticed but without numbered precisions. The purpose of this communication is to appreciate quantitatively, from a series of 16 subjects, the respective share of each components during lateral bending movements in the frontal plan and movements of rotation in the transverse plan. It results from this work that the pelvic girdle presents as reduced amplitude (4 degrees) in lateral bending on the other hand, displacement predominate to the level of thoracic spine (50 degrees). In rotation pelvic displacements are very important (30 degrees), while the spine so thoracic that lumbar has a weak participation (inferior to 5 degrees). Moderated abduction of hips increases by significant manner the motility of the pelvic girdle.     

Characteristics of the sympathetic innervation of the nictitating membrane and of the vasculature of the nose and tongue of the cat

Vasomotor responses from the nasal mucosa and tongue, and contractions of the nictitating membrane, were recorded on stimulation of the cervical sympathetic or internal carotid nerves. Preganglionic sympathetic nerve fibres which elicited a membrane response possessed a lower threshold than those which evoked nasal vasoconstriction, while the latter displayed a lower threshold than fibres which evoked tongue vasoconstriction. The sympathetic vasodilator fibres to the tongue whose activity was revealed after alpha-receptor blockade, had a similar threshold to the vasoconstrictor fibres. Membrane contraction, nasal vasoconstriction and occasionally tongue vasoconstriction could be evoked by stimulating the internal carotid nerve. The postganglionic fibres innervating the nasal mucosa had a similar threshold to those of the nictitating membrane, which may indicate that there are small myelinated fibres innervating the mucosa. The preganglionic compound nerve action potential had four major components, S1-S4. S1, S2 and usually S3 fibres were associated with membrane contraction; S2, S3 and sometimes S1 fibres were associated with nasal vasoconstriction; and S3, usually S2 and occasionally S1 fibres were associated with vasoconstriction in the tongue. It is concluded that each of these three groups of nerve fibres, but not S4 fibres, may include fibres associated functionally with the three effectors. There was a considerable difference between the relative amplitude of the responses of the three effectors elicited by stimulation of the cervical sympathetic nerve at frequencies between 0.2 and 2 Hz. Vasoconstrictor responses were relatively larger than membrane contractions suggesting differences in the mechanisms of neurotransmission at the neuroeffector junctions.     

Design and analysis of the tunnel connecting the beamcorridor and the spectrum hall of the CSNS

There is a tunnel connecting the beamcorridor and the target station in the spectrum hall in the CSNS project. The length of the tunnel is about 20 m. The shielding design of the tunnel is very significant for the persons working in the spectrum hall beca     

江西省降水集中期及其期间降水量的变化特征及趋势分析

根据江西省地方标准中有关降水集中期的定义,统计1971～2008年4～9月的降水集中期,并用季节性Kendall检验方法做趋势分析.结果表明,1971～2008年4～9月期间,6～8月是降水集中期及其期间雨量较多的月份,4、5、9月是降水集中期及其期间雨量较少的月份.随时间变化,全省6～8月降水集中期及其雨量呈可能增多趋势,4、5、9月呈可能下降趋势.     

优化焊缝金相组织 充分发挥石油用 ERW管的技术经济优势

P2ERW管代替无缝管,用于石油开采所用油管和套管的关键,是确保焊缝的高质量。它不仅需要具备先进的技术装备和完善的检测手段,更需要发挥金相检验对优化各项工艺参数的指导作用,才能从根本上掌握生产优质ERW石油用管的规律。