2#高炉大修停炉经验与实践研究

本文以炼铁厂2#高炉停炉大修为研究背景,论述了高炉停炉大修的准备工作及停炉过程中操作注意事项。本次停炉采用半回收煤气空料线、炉顶打水法停炉,根据方案对可能发生的突发事故进行了预演。结果表明,通过制定周密的停炉方案,严格控制停炉各参数,能实现快速安全的停炉,并可为其它停炉大修操作提供可靠经验。     

武钢3号高炉安全停炉操作

武钢３号高炉第二代大修停炉达到了安全顺利的目的，停炉大部分指标较好。本文从停炉前的准备工作，空料线操作，放残铁操作等方面论述了停炉操作。     

1号高炉第二代大修前破损调查分析

全面介绍了１号炉大修停炉前生产操作、原燃料条件、冷却设备损坏情况和大修停炉后高炉本体破损调查结果，客观地分析了影响１号高炉生产技术指标和炉体寿命的主要原因。     

空料线停炉操作实践

马钢第一炼铁厂9#高炉2001年11月18日停炉大修，由于采用全风量，高风温操作，并合理控制炉顶钉水量，取得了快速安全停炉的效果。     

1500 m3高炉空料线停炉操作实践

总结了唐钢中厚板厂1#1 500 m3高炉大修停炉操作实践.采用回收煤气、打水降料面停炉的方法,并计算停炉料、残铁口准确位置等,实现了停炉过程少爆震,安全、顺利、快速停炉;残铁口位置选定准确,残铁放净,为高炉大修创造了良好的条件.     

邯钢4#高炉大修停炉实践

对邯钢4#高炉大修停炉操作实践进行了分析,采用回收煤气空料线停炉,料面降至风口带以下的方法,基本达到了预期的目的,实现了安全顺利停炉.     

3高炉首次回收煤气停炉实践

3高炉这次大修停炉首次回收煤气,简化了停炉设备工作和停炉操作过程,消除污染,改善环境,回收二次能源折算标准煤216吨;应用正常料停炉又节约标准煤48.7吨,总共节约标准煤265吨。停炉风温使用896℃,是停炉操作最高的一次,停炉时间仅用8小时47分,是我厂42次大、中修停炉速度最快的一次。     

宣钢8号高炉停炉实践

对宣钢8号高炉大修停炉操怍进行了总结。这次停炉采用空料线停炉，实现了安全顺利停炉，料面降至风口带以下，取得了预期的目标。     

九钢4#高炉大修停炉实践

对九钢4#1780m~3高炉大修停炉操作实践进行了分析,停炉采取前期回收煤气,料线降至炉身下部之后不回收煤气,降料面至风口带的方法,基本达到了预期的目的,实现了安全顺利停炉。     

三钢2号高炉大修停炉操作实践

对三钢2号高炉大修停炉操作进行了总结.通过制订佶J密的停炉方案,停炉前精心准备,严格控制好降料面过程中的各参数,实现了安全、快速的预期目标.     

论从实践理解世界的物质性和自然世界的先在性

马克思主义唯物论是一种物本主义形态的唯物论,还是一种超越物本主义形态、从实践理解世界的本质相关问题的实践的唯物主义的唯物论?这是一个我们必须搞清楚的有关马克思主义唯物论的本质规定性和精神实质的重大问题.在考察物本主义的唯物论及其思维方式的局限性的基础上,揭示了马克思主义唯物论是现代的、实践的唯物主义,并重点研讨了马克思主义唯物论关于从实践理解世界的物质性和自然世界的先在性的原理,以期为马克思主义唯物论进一步阐明人类世界的实践性原理奠定基础.     

Effect of cyproheptadine on the ultrastructure of the neurons of the arcuate nucleus in the hypothalamus of the rat

The data are presented on changes in the rat arcuate nuclear neuron ultrastructure after using cyproheptadine (peritol, Egyt Pharmaceutical Works, Hungary) in a water suspension at a dose of 20 mg/kg once daily during 7 successive days and twice a day within 10 days. It was shown that cyproheptadine decreases the functional activity of the arcuate nuclear neurons, depending on the total amount of the drug used. Cyproheptadine-induced inhibition of the forming neurohormone release from neurons is likely to be one of the mechanisms of its therapeutic effect in Itsenko-Cushing's disease.     

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.