南钢炼铁系统的技术进步

90年代以来,南钢炼铁系统的技术进步取得了长足发展,一是精料,二是高炉装备,一是高炉操作水平提高,从而使高炉技术经济指标明显改善,高炉利用系数从1991年的1．804提高到200年上半年的2．836。     

我国大型高炉的技术进步

改革开放以来，我国大型高炉技术得到了迅速发展。广泛采用了精料、无料钟炉顶、富氧喷煤和长寿等技术，并提高了炉前机械化和高炉自动化水平，使我国炼铁技术水平跨上了一个新的台阶。     

无铁炼铁技术进步

近几年来,天铁从管理上入手,通过优化工艺结构,提高设备性能,改进高炉操作,使炼铁系统整体水平得到了提高,高炉各项技术经济指标取得了长足进步。天铁高炉近3年来的主要技术经济指标见表1。     

对法国德国荷兰高炉生产及长寿技术的考察报告

本文通过考察法国，德国，荷兰的高炉炼铁生产及长寿技术，介绍其目前高炉生产，原料管理，高炉操作，高炉长寿等较先进的技术特点以及为实现高炉长寿而采用 不同技术路线。     

邯钢2 000 m3高炉强化冶炼实践

邯钢2000m^3高炉是从德国引进的二手设备，从1700m^3改造扩容为2000m^3。通过高炉操作技术进步和创新，克服了设备的缺陷，高炉保持长期稳定、顺行，高炉产量不断提高，各项技术经济指标达到国内同类型高炉先进水平，利用系数长期保持在2．45以上。     

萍钢近几年炼铁生产技术进步综述

从优化原料结构、提高原燃料质量和高炉装备水平，优化高炉操作等方面，阐述了近几年来萍钢炼铁生产的技术进步。提出进一步贯彻精料方针，确保高炉长期稳定顺行的思路。     

2号高炉投产的技术进步

宝钢2号高炉是我国自行设计、建造并组织投产的第一座4000m~2级大型高炉。该炉投产过程甚为顺利,尽管因受焦炭供应不足而限产,但各项指标并不低于同期1号高炉的水平。本文就投产及开炉后半年内操作技术与1号高炉相比所作的改善,择其要点进行了介绍。     

河钢邯钢7号高炉近年高炉技术进步

河钢邯钢7#高炉,现有效容积2 000 m3。高炉克服设备缺陷大,高炉强化水平受到限制等因素,针对七高炉自身特点,我们通过解放思想、开拓思路,要求公司形成铁前以高炉为中心的理念,提高外围保障能力。并逐步加强了高炉的操作与管理的标准化、制度化推进,进一步优化上下部调剂,自2008年7月第二代炉役开炉以来,炉况保持长期稳定顺行,各项指标稳定在较好水平,炉况在外界条件变化时维持稳定局面,条件向好具备顺行局面的基础上采取积极争取指标措施,取得一定的技术进步,良好效果,尤其2011年以来利用系数2.5以上,实现了高炉长周期的稳定顺行。     

南钢300m^3级高炉生产技术进步

系统地总结了南钢300m^3级高炉生产技术进步。近年来，炼铁厂通过改善原燃料质量，优化用料结构；实施技改技措，提高高炉装备水平；加强高炉操作，确保炉况稳定顺行；优化高炉工艺，进行强化冶炼；加强基础管理，确保高炉生产等措施，取得了良好的技术经济指标。     

苏钢4#高炉炼铁技术的改进

苏钢4#高炉通过改善原料、燃料条件,加强技术进步和优化高炉操作,实现了长期稳产、高产、优质和低耗.高炉月平均冶炼强度达到了1.834 t/(m3·d)和利用系数达到了3.40 t/(m3·d),降低了成本,各项技术经济指标达到了国内同类型高炉先进水平.     

宝钢2号高炉炉体长寿维护实践

宝钢2号高炉开炉后不久就出现了炉身长寿问题,通过提高高炉操作水平、适当提高冷却强度、提高炉体护理技术水平等措施,不仅使高炉服役期实现了历史性突破,而且也提前实现了单位炉容产铁超过10000t/m^2的好水平。     

新临钢炼铁厂生产过程管理实践

2005年新临钢炼铁厂转变高炉生产管理观念，通过强化生产过程控制，优化高炉操作管理系统，使得炼铁厂的生产管理水平和高炉的各项经济技术指标不断提高。     

武钢5号高炉炼铁技术进步

武钢5号高炉1991年10月建成投产,它采用了当时世界上众多的先进炼铁工艺技术,使武钢炼铁技术迈上了一个新的台阶。20年来,通过不断对这些引进技术的消化、吸收和创新,为武钢新建和改建的高炉奠定了坚实的技术基础,使武钢高炉在现代化和大型化方面取得重大进展,达到了国际先进水平。     

A pathogenic role of Th2 cells and their cytokine products on the pulmonary metastasis of murine B16 melanoma

The role of Th2 cells and the cytokines produced by these cells on experimental pulmonary metastasis of B16 melanoma was investigated in a murine model implanted with high metastatic (B16F10) or low metastatic (B16F1) melanoma cells. An average of 250 colonies of metastasis in the lungs was counted in mice (BF10 mice) at 14 days after the inoculation of 2 x 10(5) B16F10 cells/mouse, while <20 colonies were detected in mice (BF1 mice) inoculated with the same number of B16F1 cells. CD4+ CD11b+ TCR-alphabeta+ T cells (BF10-Th2 cells) were produced in the spleens of BF10 mice, while these cells were not detected in BF1 mice. The BF10-Th2 cells produced IL-4 and IL-10 into culture fluids when stimulated in vitro with anti-CD3 mAb. However, IL-2 and IFN-gamma were not produced. The level of a pulmonary metastasis in BF1 mice increased to the level observed in BF10 mice, when BF10-Th2 cells were adoptively transferred to BF1 mice. Also, an increase in the number of pulmonary melanoma was demonstrated in BF1 mice treated with 10 microg/kg murine rIL-4. The level of pulmonary metastasis in BF10 mice or in BF1 mice inoculated with BF10-Th2 cells decreased to the level observed in BF1 mice when mice were treated with an anti-IL-4 mAb at a dose of 250 microg/kg on days 1, 3, and 5 after tumor inoculation. These results suggest that the severity of pulmonary metastasis in mice receiving B16 melanoma cells is strongly influenced by the IL-4 released from tumor-associated Th2 cells.     

Genomic analysis of the F subtypes of human complement factor B

Factor B of human complement is encoded within the Major Histocompatibility Complex (MHC) and is polymorphic, with up to 30 alleles defined by electrophoretic mobility. One of the most common alleles, BF*F, is subdivided into the FA and FB subtypes, which differ at the gene level by non-synonymous base substitutions in the seventh codon. We have found at this position a new restriction site polymorphism, as a Bsl I site absent from the FB allele. Using this restriction polymorphism, we have developed a method for BF F subtype determination, based on amplification by polymerase chain reaction of the 5' end of the BF gene, and digestion with Bsl I. This new method has been applied to a panel of 29 selected BF F individuals. A single strand DNA conformation analysis of the same region of the gene allowed us to confirm the above DNA-based BF F subtyping. During this study, two BF*F1 alleles showed discrepancies between protein and DNA typing, which were confirmed by our sequencing data. These were identical, in the 5' region, to BF*S and BF*FB genes, respectively. In a comparison with two protein subtyping methods, identical results were found for only one third of the selected samples. The conflicting results may arise, in part, from previously undescribed molecular heterogeneity within BF F subtypes, or from the presence of a null allele. Our new method allows BF*F subtyping to be used with confidence in the definition of disease-associated MHC haplotypes.     

SDL料位控制技术在莱钢750m3高炉上的应用

针对750m^2高炉原有料位检测装置中称重料位检测法和振动料位检测法存在检测准确性差，仅能作为备用检测手段，而PNF-1201型核辐射料位计易发生料位测量信号故障，导致高炉休风、慢风的问题，决定采用SDL型闪烁料位计对PNF-1201型核辐射料位计进行改造，使料位检测信号的可靠性大大提高。应用表明，高炉由改造前的平均每年发生料位测量信号故障7．7次、休风12．8h、慢风41h，达到零故障．     

Meningoencephalitis due to Rickettsia conorii. Etiopathological, clinical and diagnostic aspects

Boutonneuse fever (BF) is usually considered to be a benign rickettsiosis. However, severe presentations, resembling Rocky Mountain spotted fever, have been reported. There are few neurological complications, except in serious forms of the disease. We present a case of meningoencephalitis in a male adult suffering from BF, and we review the clinical, etiopathogenic and diagnostic aspects among the cases previously reported. We conclude that BF encephalitis would have the following characteristics: a) they mostly affect elderly males; b) they cause altered consciousness level, headaches and low rate of meningeal signs; c) absence of "tache noir"; d) cerebrospinal fluid with slight pleocytosis and/or increased level of proteins, and normal glucose values; e) computerized tomography without significative changes, and f) high rate of morbidity and mortality. We emphasize that we should consider BF in the differential diagnosis of our environmental encephalitis.     

新钢9号高炉的工艺装备特点

新钢9号2 500 m3高炉以长寿、实用、经济、高效、环保为设计原则,高炉各系统采用了国内外大型高炉成熟可靠、适用的技术和装备,为今后该高炉的主要技术经济指标达到全国同类型高炉的先进水平奠定了基础。     

安钢高炉与三明高炉主要技术经济指标对比分析

在对冶炼条件进行校正的基础上,对比了安钢高炉与三明高炉的主要技术经济指标,从理论角度分析说明了安钢高炉的指标水平,提出了改善安钢高炉指标水平的努力方向。     

5号高炉自动化系统改造及功能优化

武钢炼铁厂在全面消化吸收国外先进技术的基础上，调整工艺，对自动化控制系统中的软、硬件及基础电气化装置进行全面优化改造、使武钢5号高炉的各项生产技术指标达到并保持了国内领先水平，并成功地将这些技术移植到炼铁厂1、2、4号高炉。