抗磨钢的最新进展

综述了抗磨钢包括奥氏体锰钢，低合金马氏体钢和贝氏体钢的最新研究进展，通过分析各种抗磨钢的组织，性能以及应用工况和环境，指出了抗磨钢的发展方向。     

连铸结晶器内粘结漏钢的形成机理及对策

连铸结晶器内钢液弯月面在连铸生产中起着至关重要的作用，本文结合钢液弯月面的行为对粘结漏钢的形成进行了详细地分析，介绍了一种新的粘结漏钢形成机理，认为钢液弯月面的破损是粘结漏钢发生的直接起因，此外，还在该机理的基础上，探讨了防止粘结漏钢的对策。     

IF钢的技术控制

简述了IF钢的产品特性，分析了钢中主要元素对IF钢力学性能的影响，介绍了梅钢生产IF钢的工艺及现状，对比分析了试验前后IF钢的性能变化。     

我国内燃机气阀钢系列化发展趋势

根据我国汽车工业的发展形势预测气阀钢的发展趋势，并阐述气阀钢系列化的重要性，描述了世界各国气阀钢的系列概况，探讨了我国气阀钢系列化发展趋势，包括马氏体气阀钢、奥氏体气阀钢、气阀合金、低俣金进气阀用钢４部分。重点是马氏体和氏体气阀钢的发展。     

汽车用钢板研究开发的现状及发展

本文评述了超深冲ＩＦ钢，低合金高强度钢，固溶强化高强度钢－含磷钢，双相钢，烘烤硬化钢，高强度可焊钢板和耐磨板等汽车用钢板研究开发的现状及发展。     

关于钢中用铜合金化的再认识

介绍了用铜合金化钢的新进展，探讨了铜在钢中的有益作用，指出在钢中加入铜，可以提高钢的耐蚀性，强度，改善焊接性，成性与机加工性等。     

碳、硅、锰含量对低碳冷拔拉丝钢力学性能的影响

在多年生产冷拔拉丝钢Q195的基础上，成功地开发了低碳冷拔拉丝钢(HL钢)以代替Q195。与Q195相比，该钢伸长率δ10。增加了7．2％，抗拉强度降低了70MPa。介绍了HL钢相关的生产工艺，探讨了钢中碳、硅含量对其力学性能的影响。     

有关CSP连铸机漏钢的探讨

探讨了CSP连铸机的各种漏钢形式及漏钢原因，同时具体分析了涟钢CSP投产以来18次漏钢原因，列举了预防漏钢需采取的有关措施。     

易切削钢现状与发展趋势

综合介绍了国内外易切削钢的现状，重点介绍了易切削钢的种类及硫易切削钢的生产工艺。分析了我国易切削钢现阶段存在的问题，并提出了易切削钢的发展方向。     

IF钢的开发

汽车工业的迅速发展，促进了汽车用钢的发展，Ｃ、Ｎ含量极低的无间隙原子钢由于具有极好的成型性能，是理想的车身用钢，本文叙述了ＩＦ钢的发展过程，生产工艺及强化机理，并指出汽车用钢的发展方向。     

重轨钢的炉外精炼与连铸

论述了重轨钢真空处理的必要性及国外重轨厂家采用真空处理的现状。对用连铸坯轧制重轨的优点及重轨钢连铸工艺特点作了说明，介绍了国外改善连铸方坯质量的措施和用连铸坯轧制重轨的主要厂家。     

Localization of 17-kDa myosin light chain isoforms in cultured aortic smooth muscle cells

Smooth muscle myosin II contains two 17-kDa essential light chain isoforms (LC17gi and LC17nm) of which the relative contents differ among myosins. To understand the roles of LC17 isoforms in the functions of myosin, we performed an immunofluorescence microscopic examination of their localization in primary cultured cells isolated from rat aortic smooth muscle. To identify the isoforms, rabbit polyclonal antibodies were prepared against C-terminal nonapeptides corresponding to either LC17gi or LC17nm from porcine aortic smooth muscle myosin. These isoforms differ in only 5 amino acid residues within the C-terminal 9 residues. These antibodies specifically recognize each LC17 isoform on urea-PAGE of total rat aortic cell lysates. Immediately after plating, the smooth muscle cells stained heterogeneously with each antibody, indicating differing contents of LC17 isoforms among cells. On double staining 1-2 d cultures with both antibodies, LC17nm was detected diffusely throughout the cytoplasm, whereas LC17gi was concentrated in specific regions such as the cell periphery and the base of cytoplasmic processes. These results support the suggestion that myosin containing LC17gi is essential for force-generation by aortic smooth muscle and that myosin containing LC17nm may play an important role in maintaining smooth muscle tension.     

济钢球团配加炼钢污泥的技术进步与发展

以济钢球团厂为例介绍了球团配加炼钢污泥的技术发展,对该厂先后采取的造球喷加污泥水、浓缩膏状污泥的加工与配加、污泥饼的加工利用等3种工艺的流程、特点、运行效果、存在的问题以及投资和运行成本进行了详细的介绍和分析,介绍了该厂使用干化污泥的方法和效果.指出采取高速强力混匀工艺提高污泥饼的粉碎分散和混匀效果、采用管道全封闭工艺输送炼钢污泥替代汽车运输和加强污泥在球团生产中的作用研究是球团配加炼钢污泥技术发展的3个重要方向.     

Impact Factors for Horizontally Curved Composite Box Girder Bridges

This paper presents a method for determining the dynamic impact factors for horizontally curved composite single- or multicell box girder bridges under AASHTO truck loading. The bridges are modeled as three-dimensional structures using commercially available software. The vehicle is idealized as a pair of concentrated forces, with no mass, traveling in two circumferential paths parallel to the curved centerline of bridges. An extensive parametric study is conducted, in which over 215 curved composite box girder bridge prototypes are analyzed. The key parameters considered in this study are: Number of cells, number of lanes, degree of curvature, arc span length, slope of the outer steel webs, number and area of bracing and top chord systems, and truck(s) speed and truck(s) positioning. Based on the data generated from the parametric study, expressions for dynamic impact factors for longitudinal moment, reaction, and deflection are proposed as function of the ratio of the arc span length to the radius of curvature. The results from this study would enable bridge engineers to design horizontally curved composite box girder bridges more reliably and economically. Furthermore, the results can be used to potentially increase the live-load capacity of existing bridges to prevent posting or closing of the bridge.     

ICP-AES法测定硅铁中全硼

提出了硅铁中酸溶硼与酸不溶硼的概念 ;试验了测定硅铁中硼的酸溶条件。结果表明 ,在硫磷混酸冒烟的条件下 ,硅铁中硼及其化合物可被分解完全 ,在此条件下溶解硅铁测出的硼称为硅铁中的全硼。     

Successful treatment of a giant bulla by thoracoscopic excision and laser ablation

A 39-year-old male complaining of shortness of breath on mild exertion. Radiographs revealed that a giant bulla occupied more than half the area of the right lung field. Thoracoscopic excision of the giant bulla was performed using some autosutures. After the emphysematous lesion was consolidated by laser ablation, it was sutured using PDS thread. The bulla in the left lung was similarly excised 3 weeks after the first procedure. The FEV1.0% improved from 72% to 89% after excision and laser ablation of a giant bulla and bullae. Thoracoscopic excision and laser ablation of a giant bulla appears to be an effective alternative to conventional thoracotomy.     

Current status of G-CSF in support of chemotherapy and radiotherapy

It is now 2 years since the commercial availability of G-CSF, and thus it seems appropriate to reassess the clinical merits of this cytokine in the context of current knowledge; such an evaluation seems best founded not only on an analysis of the biology of G-CSF itself, but also on a critical assessment of whether its biologic actions translate into a cost-effective alleviation of patient suffering and improved cancer cure. As is so often the case, the knowledge base upon which clinicians must rely to make prescribing decisions is smaller than we might wish, but a substantial body of existent information can provide a guide to clinical strategy until a number of ongoing trials give more concrete information.     

Biot–Frenkel Poromechanics in Russia (Review)

The Biot–Frenkel model of fluid-infiltrated material dynamics in its original linear form is adequate to solve many problems for soils and rocks mechanics saturated with fluids. The main interest to it was connected with applications in oil/gas production and the exploration industry and also in civil engineering and ecology. The model was developed and generalized successfully for the first half century. The input of the Russian writers was essential. A corresponding review of their published results is given in this paper.     

Study on 190 strains of "staphylococcus aureus" isolated in a department of ophthalmology (author's transl)

Biochemical features and sensitivity to chemotherapeutic agents of 190 strains of Staphylococcus isolated from pharinx and conjunctiva of ophtalmological patients and staff were studied. Each strain was investigated for: pigment, coagulase, hemolysis (alpha-toxin), phosphatase and penicillinase production and mannite fermentation. Twentyfour chemotherapeutic angents were used for sensitivity tests. The Authors emphasize that a positive coagulase test is the best laboratory evidence for pathogenicity of a given strain of Staphylococcus, and that the site of isolation of the examined strains is not related with their biochemical features and sensitivity to chemotherapeutic agents.     

钢铁行业能源精准化管控集成系统的开发

在信息技术综合服务平台的基础上,以钢铁行业节能环保为目标,通过钢铁行业节能试验工程建设、钢铁企业能源精准化设计、钢铁企业能源综合管控、钢铁行业能源信息咨询服务四大平台的建设,开发出钢铁行业能源精准化管控集成系统。此项目的实施可降低钢铁企业吨钢综合能耗3%~5%,吨钢节省18.1kg标准煤,吨钢减少CO2排放超过45kg。