珠钢薄规格热轧板开发与生产实践

本文简述热轧薄板的市场应用情况，总结了珠钢CSP工艺技术开发和热轧薄板的生产过程及其产品质量情况，并展望热轧薄板生产技术新趋势。     

1200薄板轧机双倍尺生产工艺实践

介绍1200薄板轧机生产双倍尺薄板的工艺设备改进措施，热轧薄板的双倍尺生产可以有效的减少切头损失，提高薄板生产的成材率。     

钛合金薄板生产工艺试验

本文通过Ti-631合金薄板轧制工艺、热处理、轧制方法等工艺试验，研究了Ti-631合金薄板生产工艺、组织、性能三者之间的关系，为Ti-631合金薄板生产工艺的制定提供了试验数据。     

近期世界钢材市场分析与展望

一、６月份全球薄板市场分析与展望１．薄板价格持续攀升５月份以来，尽管薄板产品价格的攀升速度和厂商提价幅度在整个月内变化较大，但全球薄板市场从总体来看呈现出持续回暖的态势。在中国，政府决定对进口成品钢材和板坯启动临时保障措施，受此影响，自独联体和非独联体进口的薄板价格均上涨３０－５０美元／吨。同时，日本钢铁企业再次推动第三季度钢材出口价格的提高，所有的成品薄板均上涨４０－７０美元／吨。在美国，薄板市场强劲攀升的态势有所趋缓。尽管如此，所有薄板产品价格均较上月上涨５－１０美元／短吨。其中，西部海岸地…     

世界钢材价格分析及2006年二季度预测

一、薄板产品市场 1.亚洲薄板进口价格和中国薄板价格再次呈上升势头进入2006年2月之后，中国薄板价格再度上升4％-5％，每吨上涨18-22美元，其上升幅度按品种不尽相同。如2006年2月中国商品级热轧板卷上海出库价每吨上升到400美元。同样，亚洲地区热轧板卷进口价格如韩国薄板进口价格也呈上升势头。虽然亚洲地区薄板市场价格再度回升，预计2006年3-4月其价格每吨还可能上升约20美元，但由于中国薄板生产能力继续在增加，2006年可能再次呈现价格走向不稳定局面。进入2006年2月，国内一些薄板生产厂因生产成本加大而提升其出厂价，已被用户所接受，这证明市场向着上升方向发展，如马鞍山钢铁公司2006年2月交货的热浸镀锌板卷价格因锌价上涨而每吨提升15美元。从2006年1月以来远东地区废钢市场价格每吨上升20美元，这也是最近两个月亚洲地区薄板市场价格上升的原因之一。这种情况同薄板市场供需关系有关。尽管目前亚洲地区大多数国家薄板市场尚未呈现明显的紧俏态势，但薄板价格行情总体呈上升走势。中国自从2005年11月以来，建筑行业进入冬季休工期，对热浸镀锌板卷需求减少，国内一些生产厂自动实施限产措施，热浸镀锌板卷产量2006年按月计算下降了3l％。     

汽车用薄板的发展及对策

针对汽车工业的未来发展趋势及其对薄板的品质要求，论述了汽车用薄板的发展方向和特点，各种新型薄板的应用前景及在我国现有国情基础上开发、研制和生产汽车用薄板的选径；并对今后的发展战略提出了见解和建议。     

冷轧薄板织构的检测及轧制工艺对织构的影响

介绍了冷轧薄板织构的主要检测方法及冷轧工艺对薄板织构的影响，为冷轧薄板织构控制和性能优化提供参考。     

世界钢材市场价格分析及三季度预测

近期世界薄板市场价格保持连续上升态势，5月加权平均指数比年初上升25％。原因主要是世界锌价大幅度上涨，导致热浸镀锌薄板市场价格迅速上扬；其次是薄板供应紧俏，尽管中国薄板产量持续保持高水平，但世界其他地区需求强劲。     

近期世界钢材价格分析及2005年一季度预测

中国薄板市场依然存在两种不同价位，即一种价位由中国大陆薄板消费量所制约；另一种价位则是一些制造业部门用于制造出口商品的进口薄板产品价格。中国薄板市场价格进入2004年10月之后，依然每吨比世界薄板产品市场价格低100美元。     

汽车用含铜高强度薄钢板

介绍了最新开发的汽车用含铜高强度热轧薄板和冷轧薄板。在超低碳钢中添加１％以上的铜，利用含铜相的沉淀硬化，获得了高强度和优良成形性兼备的冷轧和热轧薄板。含铜热轧薄板是一种热处理强化类型钢，经时效热处理使铜析出，产生强烈沉淀硬化，钢的抗拉强度在原基础上提高２００ＭＰａ以上。     

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.     

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.     

Structure of the attachment of the vocal ligament to the perichondrium of the thyroid cartilage

The ventral attachement of the ligamentum vocale of eleven larynges (new-born and adults has been studied in sagittal, frontal and horizontal sections. 1. Supplementary to the known structure of the ventral attachement of the ligamentum vocale we have noticed collagen fibers which ascend in the inner angle of the thyroid cartilage and which partly cross to the other side. Sometimes a few fibers which are running downward have been observed. This structure of the attachement must be more firm than the known structure. 2. Moreover it has been observed that a lot of the angles of the crossing collagen fibers in the cartilage of the lamina mediana (near the attachement of the ligamentum vocale) are right-angled, whereas the angles of the fibers which lie in the laminae laterales in their majority are acute-angled. This phenomenon also is interpreted as a structure which makes the lamina mediana firmer. The fact, that this structure is not so evident in the specimens of the new-born as in those of the adults indicates that there are postnatal changes in the structure of the lamina mediana.     

董东矿沿空留巷切顶卸压对底板受力影响分析

以董东矿50107工作面为研究对象,通过数值模拟软件FLAC3D建立模型,对比分析窄矿柱、宽矿柱以及切顶沿空留巷情况下围岩及底板受力特征,确定切顶沿空留巷切顶对围岩的卸压作用。对比分析围岩受力情况,表明切顶沿空留巷卸压效果比较明显,对比分析围岩塑性区的底板破坏深度,表明有利于切顶沿空留巷卸压效果明显,切顶沿空留巷有很好的卸压效果,有利于矿山巷道围岩控制。     

销钉根部裂纹产生原因分析

对TP304H钢管螺柱焊销钉根部产生的裂纹进行分析,寻找裂纹产生的原因并提出改进的方案。     

Localization of the fluorescent part of the Y-chromosome in nuclei of the chorionic symplast of the human placenta

The localization of fluorescing Y-chromatin was studied in the nuclei of the chorionic symplast of the mature human placenta in cytological smears and histological sections stained with acrichin-mustard. Its localization within the nucleus and its relationship with nucleoli and nuclear membrane are shown. The significance of studying Y-chromatin in the placenta for population investigations in human cytogenetics and for the establishing of the affiliation of placenta structures is discussed.     

Histophysiologic characteristics of the effector innervation of the arteries of the base of the brain during rat ontogenesis

The development of adren- and cholinergic nervous plexuses in the brain base arteries was studied by histochemical methods of Falck and Kelle in animals and fetuses of 10-22 days, newborn rats, animals of 10, 20, 30, 40, 60 and 120 days of life and 1 and 2 years old rats. The cholinergic nerve fibres were first found in the basilar, vertebral and internal carotid arteries on the 15th and 16th days of ontogenesis. Specific fluorescence of adrenergic conductors on the same arteries is revealed somewhat later--from the 17th and 18th days of the intrauterine development. Further formation of the cholin- and adrenergic innervation of the arteries of the Willis' circle goes on synchronously. The number of nerve fibres increases with the growth of the artery diameter. The concentration of catecholamines and the activity of AChE in them gradually increases. The greatest density of nerve fibres per 1 mm2 is determined in 20-day-old rats. The number of cholinergic nerve fibres on the arteries of the brain base is equal to that of adrenergic fibres during the whole period of postnatal ontogenesis. By the 30th day the effector nervous apparatus has a definite structure. In old rats the activity of AChE and the content of catecholamines drop, the amount and concentration of nerve fibres decrease.     

The clinico-hematological indices of the participants in the cleanup of the aftermath of the Chernobyl accident

Clinicohematological investigations and cytogenetic analysis of blood lymphocytes were made 5-7 years after the Chernobyl accident in 201 liquidators who had worked in the radionuclide-contaminated zone. Among the somatic diseases found in the examinees statistically more prevalent were cardiovascular and gastrointestinal affections, asthenic syndrome, thyroid disorders. Hemograms presented a rise in hemoglobin, red cell and eosinophil content, a drop in the number of neutrophils. A tendency to erythrocytosis was observed in 20.3% of the wreckers. Dicenters and rings were abundant in the lymphocytes of 69% of the cytogenetically examined examinees 5-7 years after the exposure to radiation.     

Surgery of the base of the skull

To treat pathological processes, primarily tumors, in the base of the skull is one of the most intricate neurosurgical problems. In the past decade, interest in this problem has greatly increased due to the advent of new methods of diagnosis, up-to-date neurosurgical equipment and to a greater cooperation of physicians of related disciplines: ophthalmologists, otosurgeons, plastic surgeons. The authors present and summarize the experience accumulated by the researchers of the N. N. Burdenko Institute of Neurosurgery in the past 10 years in treating basal tumors. Based on a great deal of clinical findings, approaches are proposed in treating some groups of basal tumors, such and pituitary adenomas, craniopharyngiomas, meningiomas at various sites, trigeminal and acoustic neurinomas, and malignant neoplasms of the base of the skull. The conditions required for successful surgical treatment of the processes in the base of the skull are described in detail. One of them is a correct determination of a surgical approach.     

矿山地质构造沉降监测中水工环地质调查的作用分析

为了保障矿山企业的发展与矿山地质自然环境形成协调的发展模式,应对矿山深层水位的沉降进行检测,水工环地质调查是确定矿山地下水位深度的有效手段之一。基于此,开展对矿山地质构造沉降监测中水工环地质调查的作用分析研究,通过研究得出,水工环地质调查可以提高矿山地质构造沉降监测结果精准度、为矿山地质构造沉降提供应急方案、保障矿山地质构造沉降监测工作效率等作用,对实现矿山企业的精细化施工提供有利条件。