唐钢高速线材厂控冷工艺及装置的技术分析

介绍了唐钢高速线材厂设备引进情况与生产工艺流程,对该厂的水冷区的组成、布置、工作方式、导管结构特点及安装固定特点等结构技术特性,水冷工艺温度及特性曲线与温度控制进行了分析介绍,阐述了夹送辊的工作特点和工作方式,对吐丝机的机构特点、平衡、冷却及铁皮清除方式进行了分析介绍,此外还对风冷运输线的组成、布置、运行方式等技术结构特性进行了阐述。     

Ni和Nb元素对Fe-Cr-Mo合金力学和阻尼性能的影响

摘要：采用光学显微镜、扫描电镜、透射电镜、弯曲共振试验机和万能材料试验机等分析了复合添加质量分数0.8%Ni元素和0.1%Nb元素的Fe-Cr-Mo合金组织和析出相的大小、形态,研究了Ni和Nb元素的添加对Fe-Cr-Mo合金力学性能和阻尼性能的影响。结果表明,Ni和Nb元素的加入不但使合金晶粒显著细化,而且有效抑制了富Cr析出物的析出,使析出物明显细化且分布弥散。晶粒和析出物的细化同时提高了合金的强度和塑韧性,尤其是显著地提高了材料的塑性。1000和1100℃退火后,Ni和Nb元素的加入将提高减振合金的矫顽力,降低磁致伸缩系数,使减振合金的阻尼性能降低。900℃退火后,Ni和Nb元素的添加虽然提高了合金的矫顽力,但由于Mo元素的回溶使磁致伸缩系数增大,阻尼性能获得提高。     

我国钛及钛合金板材标准化现状

主要回顾了我国钛及钛合金板材标准化历程,重点介绍了本世纪钛板材国标体系的重要变化及完善情况,并与国外先进标准进行了对比,提出了进一步完善和发展我国钛板材标准体系的发展思路、改进意见和建议。     

FactoryLink在CSP厂连铸HMI系统中的应用

对FactoryLink系统的内部体系结构及工作原理进行简要分析.重点阐述根据武钢CSP分厂铸机工艺特点和控制要求,以FactoryLink为软件平台设计开发的HMI监控系统的构成和组态.实际应用表明:该系统控制精度高,功能齐全,界面友好,性能稳定可靠,各项控制功能均达到设计要求.     

螺杆式压缩机的修复

针对螺杆压缩机在运行中出现的支撑轴承及推力轴承磨损，阴阳转子气、油封磨损变形，气缸内壁防腐层脱落及磨损；阴阳转子啮合面防腐层脱落及磨损；阴阳转子气、油封轴颈磨损；阴阳转子同步齿轮轴颈磨损；气缸端面内壁磨损；阴阳转子气封密封垫部分损坏等缺陷作了详细的分析，并以现场应用为例，提出了解决问题的措施，并在实际运用中取得了很大的成效。     

惩罚与激励双视角下绿色矿山建设的演化博弈与仿真

为推进绿色矿山建设、转变矿业发展方式,基于博弈论和系统动力学构建地方政府和矿山企业的博弈模型,并引入动态惩罚机制和动态激励机制,对博弈双方进行稳定性、均衡点分析以及模型仿真.研究结果表明:在静态机制下,地方政府和矿山企业的行为呈周期性变化,不能达到稳定均衡状态;当地方政府采用动态惩罚机制和动态激励机制时,演化博弈过程呈...     

Activity of lysosomal and nonlysosomal proteases and contents of protein and its degradation products in the blood serum of rats with fibrosarcoma induced by methylcholanthrene

Activity of lysosomal and nonlysosomal proteases and contents of protein and its degradation products in the blood serum of rats with methylcholantrene fibrosarcoma were evaluated. Activity of lysosomal proteases and prolidase and prolinase as well in the blood serum of rats with methylcholanthrene tumour did not differ from the activity of these enzymes in the blood serum of control rats. Only the activity of elastase and collagenase in the blood serum of rats with methylcholanthrene tumour especially with tumour of intermediate and big mass was increased. Content of total protein was decreased in the blood serum of rats with tumour of intermediate and big mass and contents of glycoproteins and alfa-amin nitrogen were increased in comparison to the blood serum of control rats.     

钢铁企业智慧能源管控系统开发与实践

 能源管控系统是国家工信部推出的节能减排先进适用技术之一,也是企业实现能源精细化管理的重要措施。综述了钢铁企业能源管控系统的现状和存在的问题,并对未来发展进行了展望。针对能源管控系统核心功能展开进一步分析,从基础能源管理到能效分析与评价、能源供需预测与优化分配、多能源介质耦合优化调度及辅助决策,以及碳排放分析等核心功能,旨在推进中国钢铁工业能源管控系统的进一步完善,促进智能化、绿色化发展,更好地发挥能源精细化管理作用,为企业节能减排做出更大贡献。     

钢铁制造流程炼铁区段耗散结构的解析

为了研究钢铁制造流程耗散结构的本质及其特征,以高炉炼铁区段为对象,研究解析了多工序协同动态运行条件下的耗散结构优化问题.由料场、焦化、烧结、球团、高炉等工序所组成的炼铁区段,不仅是钢铁制造流程中重要的物质/能源转换中心,也是全流程动态有序、协同连续运行的关键和基础环节.炼铁区段的物理本质是铁素物质流在碳素能量流的驱动和...     

Child health in America: toward a rational public policy

Analysis of currently available data on mortality and morbidity indicates that the major organic illnesses of childhood, and their developmental consequences, are susceptible in part to the technical interventions of American medical science. Environmental forces, however, exert a powerful impact on the health of children in the United states, manifested both in the disproportionate toll of most organic diseases on poor and nonwhite populations and in such increasingly important symptoms of familial, social, and behavioral distress as child abuse, accidents, and childhood suicide. Review of the nature, quality, and distribution of child health services demonstrates a systemic inability to reach and treat the children most in need of them. A rational basis for child health policy includes: appropriate concepts of health, disease, and preventive and therapeutic intervention; a capacity to acknowledge, to measure, and to act on the familial and environmental, as well as the medical, sources of illness; an orientation to the developmental and social implications of good and poor child health; and a commitment to enable all children to receive health services. The data and this policy framework lead to these program recommendations: the channeling of resources into a more rational system which guarantees equity and access; a planning and program implementation mechanism which addresses the health needs of diverse local populations and which makes real the advocacy concept; a screening, evaluation, and surveillance methodology; a delivery system which both applies preventive and curative health technology and addresses basic life needs of children; and a coherent program for the training, assignment, and supervision of the several kinds of manpower which such a system would require.     

Circadian melatonin and young-to-old pineal grafting postpone aging and maintain juvenile conditions of reproductive functions in mice and rats

Chronic, night administration of melatonin to aging mice and transplantation of a young pineal gland into the thymic rudiment of older mice and rats have been studied with the aim of evaluating their effects on aging of gonadal, sexual, and reproductive functions. Both melatonin administration and young-to-old pineal grafting positively affect size and function of testes and maintenance of juvenile hippocampal and testicular LHRH-receptors and beta-adrenergic receptors in the tests of old rats and mice. These results demonstrate that a pineal-directed circadian function and cyclicity is fundamental for the regulation of sexual, reproductive physiology, and that proper intervention with melatonin may potentially postpone aging of both neural and gonadal sexual function.     

Long-chain alkenes of the haptophytes Isochrysis galbana and Emiliania huxleyi

The gene families encoding the immunoglobulin variable regions of heavy (VH) and light (VL) chains in vertebrates are composed of many genes. However, the gene number and the extent of diversity among VH and VL gene copies vary with species. To examine the causes of this variation and the evolutionary forces for these multigene families, we conducted a phylogenetic analysis of VH and VL genes from the species of amniotes. The results of our analysis showed that for each species, VH and VL genes have the same pattern of clustering in the trees, and, according to this clustering pattern, the species can be divided into two groups. In the first group of species (humans and mice), VH and VL genes were extensively intermingled with genes from other organisms; in the second group of species (chickens, rabbits, cattle, sheep, swine, and horses), the genes tended to form clusters within the same group of organisms. These results suggest that the VH and VL multigene families have evolved in the same fashion: they have undergone coordinated contraction and expansion of gene repertoires such that each group of organisms is characterized by a certain level of diversity of VH and VL genes. The extent of diversity among copies of VH and VL genes in each species is related to the mechanism of generation of antibody variety. In humans and mice, DNA rearrangement of immunoglobulin variable, diversity, and joining-segment genes is a main source of antibody diversity, whereas in chickens, rabbits, cattle, sheep, swine, and horses, somatic hypermutation and somatic gene conversion play important roles. The evolutionary pattern of VH and VL multigene families is consistent with the birth-and-death model of evolution, yet different levels of diversifying selection seem to operate in the VH and VL genes of these two groups of species.     

武钢厂前大道跨线桥检测分析与病害整治

武钢厂前大道跨线桥经过50年的运行,桥梁结构产生病害,出现缺陷,桥梁状态的劣化严重影响到桥梁正常使用.通过对桥梁结构的检测分析和技术状态的评定,研究其病害机理与防护对策,并及时防范和予以整治,使桥梁的使用寿命得以延长.     

Electron microscopy in assessing raw materials and products in the plasma synthesis of chromium compounds containing boron and carbon

The initial powders in plasma synthesis (chromium, its oxide and chloride, and boron), the micro- and nanopowders of chromium boride and carbonitride produced, and the accompanying pyrolytic boron and carbon are investigated by means of transmission and scanning electron microscopes. In the analysis of the powders and industrial micropowders of chromium boride and carbide, transmission electron microscopy yields complete information regarding the shape and size of the particles and their disperse composition. In the analysis of the nanopowders, transmission electron microscopy permits the visualization of individual particles, determination of their linear dimensions, and confirmation of their near-spherical shape. Scanning electron microscopy provides information regarding the nanoparticles’ tendency to aggregate and permits investigation of the ensemble of nanoparticles, as well as individual nanoparticles, with refinement of their dimensional range. It confirms the geometric shape of the particles and permits the proposal and discussion of mechanisms of nanoparticle formation. The distinguishing feature of the pyrolytic boron and carbon nanoparticles is their ability to form microaggregates (200–400 and 150–200 nm, respectively) consisting of particles in the range 10–40 nm.     

中国钢铁产业发展与展望

钢铁材料在经济社会发展中具有重要的作用和地位,钢铁产业是国民经济重要的基础产业。回顾了中国钢铁产业的发展历程与各时期产业发展特征,论述了关键共性技术和技术进步对钢铁产业发展的推动作用和重要意义。研究指出,面向未来中国钢铁产业必须坚持减量化、绿色化、智能化的可持续发展道路,遵循产业发展的客观规律,严格控制产能规模的盲目扩张和产量增长。钢铁产业的可持续发展要实现钢铁制造的功能拓展,加强产业科学布局和企业重组整合,促进流程结构优化调整,构建钢铁厂物理信息系统,实现高质量转型发展。提出并探讨了到本世纪中叶,钢铁产业的发展方向与路径。     

镁合金加工技术的发展趋势与开发应用前景

镁及其合金密度小,仅为铝的64％,钢的25％,是目前密度最轻的金属结构材料之一。由于它具有一系列的优越特性,近年来倍受汽车制造、航空航天、通讯、光仪、印制设备、电子计算机制造等工业部门的青睐,被誉为21世纪的金属。本文较详细地论述了镁及镁合金的特性、工艺特点与用途;镁工业的发展历史与现状;镁合金加工技术的发展水平和趋势;以及镁合金的开发应用领域和前景等。     

阳极板载运车提升卸载装置改进与优化

介绍了贵溪冶炼厂极板转运设备阳极板载运车提升卸载装置的组成及工作原理,并从提升卸载装置缺乏自由度、限位支架损坏摆动撞击、提升装置倾斜重力、硬性碰撞冲击四个方面分析了提升卸载装置产生变形的原因,最终确定是由于提升装置倾斜重力、硬性碰撞冲击导致提升卸载装置产生变形。通过分析,采用加强立板的方式进行改进优化,经计算验证,改进方式是可行的,可以解决阳极板载运车提升卸载装置变形的问题。     

International Classification of Functioning, Disability and Health: An Introduction for Rehabilitation Psychologists.

The International Classification of Functioning, Disability and Health (ICF) represents a new way for rehabilitation psychologists and other health care providers to classify health and functioning. The ICF classifies functioning and disability through the constructs of Body Functions and Structures and Activities and Participation and addresses contextual influences through Environmental and Personal Factors. The ICF and its companion classification, the International Statistical Classification of Diseases and Related Health Problems, Tenth Revision, provide a complementary, broad, and meaningful picture of the health of an individual or of entire populations. Research and clinical implementation efforts suggest that the ICF is a useful and meaningful public health tool. The development of the ICF and its universe and scope of application are reviewed. Critical concepts are defined, the structure of the ICF is illustrated, and clinical-research utility are featured in light of the ethical considerations for responsible use by rehabilitation psychologists. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Of Perspectives,Issues, and Politics in Materials Technology

Recognizing the pervasive importance of materials science and engineering (MSE) to practically every facet of man’s life, this lecture takes a broad view of the origin and technical trends and achievements in MSE, briefly reviewing its history and relationship to society over many millennia, to the present day, with specific examples. Major emphasis, however, is placed on modern MSE as related to current national issues, using as illustrations of the latter natural resources, industry and the economy, research and development, education, and technology transfer. The discussion of these areas leads to consideration of the role of the Federal Government and the importance of and need for a coherent national policy to deal with critical issues, many of which are listed herein. Some important steps by the Government fostering high level coordination as well as cooperation among government, industry, and academe are cited. Having thus illustrated the pervasive and vital impact of MSE on society, and its current esteemed recognition and position of influence, the lecture concludes that in this period of global change — social, economic, and technological — there is a challenge to MSE to respond beneficially to societal needs more than ever before. The opportunity and mechanisms now exist. Greater participation in the public and political arenas, with mutual education, is indicated. NATHAN E. PROMISEL received his Bachelor of Science and Master of Science Degree at the Massachusetts Institute of Technology, did his doctorate work at Yale University, and received an Honorary Doctor of Engineering Degree at Michigan Technological University. He became Assistant Lab Director at International Silver Company, leaving in 1940, and Chief Materials Scientist and Engineer (aeronautics and weapons) and Materials Research Coordinator for the Department of the Navy, leaving in 1966. He is presently an International Consultant. Dr. Promisel has been a long-time member of the National Materials Advisory Board of the National Academies of Science and Engineering, and from 1966 to 1974 was its Executive Director. He was also a Member of the Office of Technology Assessment (Congress) Materials Advisory Committee, as well as Chairman or Member of numerous other Government and public technical groups. These included being Chairman of the U.S. Group for the Science Exchange Program with the U.S.S.R., for materials and electrometallurgy, and serving as Chairman of the NATO Aerospace Research Group (Materials and Structures). Dr. Promisel is a member of the National Academy of Engineering; Past President, Fellow, and Honorary Member, American Society for Metals; Past President and Founding Member of the Federation of Materials Societies; Honorary Member of AIME, ASTM, and SAE (Materials Division); Fellow of British Institute of Metals and SAMPE. He has presented distinguished lectures to The Electrochemical Society and ASTM. Dr. Promisel has received numerous awards and is the holder of two patents. He has written 65 technical papers and has been the author, contributor, or editor of eight books.     

X射线荧光光谱在岩石分析中的应用评介

X射线荧光光谱(XRF)在岩石分析中的应用是其在地质材料领域分析应用的基础。文章以硼酸盐熔融制样、高精密度全自动化现代XRF仪器及软件和基体效应数学校正等为主的现代XRF理论与技术方法的引入、消化、研发及应用,多种标准物质系列的形成与实际应用研究工作,直接压片法岩石多元素精确分析的研究与应用和用能量色散X射线荧光光谱(EDXRF)进行岩石主次组分准确分析的探索等方面较全面地评介了XRF分析技术在我国岩石分析中应用的历史发展和已取得的重要成果。最后评介了这些成果的历史和现实意义:XRF作为一种快速、准确、高自动化的现代仪器分析方法已基本“替代”了传统的化学方法中主、次、痕量元素的分析,而成为当今地质材料多元素分析的主导方法。文章特别强调了在超细标准物质研制与超细样品制备方面的研究工作以及该项研究的意义和可能的深远影响,美国国家标准与技术研究院(NIST)在这方面的研究工作标志着这将是地质分析技术研究的一个新的研究方向。引文161篇。