深化模拟市场核算 努力降低吨坯成本

深化模拟市场核算　努力降低吨坯成本邯钢第二炼钢厂大板坯工段我们大板坯工段是邯钢第二炼钢厂的主要生产工段之一，现有职工１６４名，下设９个生产大组。主要设备是一台年设计能力２４万吨的超低头板坯连铸机，担负着二炼钢厂近一半的浇钢生产任务。几年来，我们按照公...     

炭素阳极焙烧烟气净化监控系统的设计及实施

介绍中铝公司贵州分公司炭素阳极焙烧烟气净化工段监控系统的设计和实施过程.     

空冷塔冷冻水管线技术改造

铅锌公司制氧工段负责提供生产用氧气和氮气,副产品液氧、液氮、液氩向外销售。空分装置因设备多,功率大,在企业生产降本增效过程中有着举足轻重的作用,工段利用现有工序管线,对空冷塔上段冷冻水管路进行改造,在提高设备运行率的同时,降低运行成本和维修费用。     

炭素阳极焙烧烟气净化监控系统的设计及实施

介绍中铝公司贵州分公司炭素阳极焙烧烟气净化工段监控系统的设计和实施过程。     

焦化厂水处理新工艺

本文阐述了焦化厂新建废水处理厂所选的工艺，该工艺独有的特点是：只利用游离氨蒸馏装置脱氨；利用生化工段进行缺氧脱氮；利用合建式曝气沉淀池装置硝化残留氨而达到部分脱氮。该工艺降低生产成本的一个主要节能设计是：维持了蒸馏系统和生化工段之间合理的热平衡。     

大吉山钨业降耗着眼细节

大吉山钨业选矿厂粗选、重选、精选各工段结合各自工段实际情况,在节能降耗工作中积极探索新模式,从开展小改小革上入手,提高系统降本增效水平。粗选工段针对原细碎机返砂量大等问题,拆除单层振动筛设备的方木,改用螺栓固定筛面,并增加一定的筛面面积,不仅减少了振动筛返砂量,而且提高了筛分效率,将原使用的4台单筛减少至3台,降低了细碎机动力消耗,每月可节约电耗1万多kWh。重选工段是水消耗大户,经常出现突然缺水的情况,为维持正常生产作业,通过实施引水工程,将螺旋溢流水引入摇床做补加水,每月可节水100多m^3。精选工段针对螺旋机制作成本高的问题,     

我们是如何搞好班组管理工作的

班组是企业的细胞，是最基本的组织单位，企业的质量、成本、效益都要通过班组来执行和实施，班组工作开展得如何，直接关系到企业的成败兴衰。提高班组素质，是我们基层管理人员基本的职责。下面以冶炼工段准备班为例来阐述我们是如何搞好班组工作的。该班组主要负责全工段炉壳的维修、备品备件的准备工作。几年来，我们在提高组员自身素质，严格管理方面做了不少工作。正值当前企业制度改革．经济增长方式由粗放型转变为集约型，效益是每个企业的首要任务，而效益是靠每个班组来完成的，抓好典型班组，以点带面是我们工作的主要方法和内容…     

加强基层管理 降低生产成本

三钢厂注锭工段是电炉冶炼的下一道工序，工艺流程为砌锭盘、安帽口备模、套中注管、注铜线抽风、开包浇注、脱模、打钢字、研磨交库等。在电炉钢成本核算中肩负着回收注余、减少退废、降低消耗的重要任务。自1997年以来，注锭工段逐步转变观念，适应市场要求，坚持以降成本为主线，通过深化改革，强化基层管理，收到了明显的成效。一、严细标准化操作，提高钢锭质量市场经济条件下，只有高质量的产品才能赢得客户，只有高质量的生产，才能减少废品，增加产量，提高效益。这就要求工段每一道工序、每一个环节都要精细操作。为此，注锭工段制…     

水冷结晶罐搅拌器的改造

分析了江西铜业公司贵溪冶炼厂电解车间老净液工段水冷结晶罐搅拌器存在的问题 ,提出了改造方案并予以实施 ,获得了较好效果。     

潜力来自哪里？──大冶铁矿东采改炮班成本管理调查

潜力来自哪里？──大冶铁矿东采改炮班成本管理调查周文斌作为企业成本管理的“第一道关口”——班组成本控制，如何真正落到实处，抓出实效？大冶铁矿东采车间边坡工段改炮班苦练内功，挖潜增效的作法对我们不无启示。这个班现有职工３１人，是一个工种单一，作业分散的...     

Standards of weight and height for Ayrshire, brown Swiss, and milking shorthorn heifers

To develop a modern appraisal of growth for Ayrshire, Brown Swiss, and Milking Shorthorn dairy heifers, data on heart girth and height at withers were collected from 1279 Ayrshire heifers (33 herds), 1819 Brown Swiss heifers (46 herds), and 565 Milking Shorthorn heifers (20 herds), ages 1 to 25 mo, in herds located throughout the US. Means and standard deviations were determined for height and heart girth for each month of age. Third-order regressions on age were fitted to the means to describe height and heart girth. Estimated mean height and heart girth at 6, 12, 18, and 24 mo, in centimeters, were for Ayrshire 98.7 and 118.4, 114.4 and 145.9, 122.8 and 163.2, and 127.6 and 176.4; for Brown Swiss 102.6 and 122.3, 199.4 and 151.3, 128.7 and 168.8, and 134.0 and 182.0; and for milking Shorthorn 98.0 and 119.4, 113.6 and 148.6, 122.6 and 166.6, and 127.7 and 179.9, respectively. These data can be useful to evaluate the heifer rearing program with respect to the growth rates of heifers on an individual farm.     

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。     

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。     

The utility of high-resolution magnetic resonance imaging in the evaluation of the triangular fibrocartilage complex of the wrist

This work offers an anthropological analysis of intra-household processes underlying gender- and age-specific differences in individual nutritional and health care allocations and outcomes in particular cultures. Based on recent ethnographic studies in India, Nepal, Madagascar, Mexico, and Peru, correspondences are analyzed between local cultural ("emic") and scientist-policy maker practitioner ("etic") understandings of nutrition, health, and human development, and the relative "values" of females, males, and children of different ages. The data and analyses clarify specific epidemiological and demographic findings on age and gender bias in nutrition and health and highlight the multiple cultural, economic, and biological factors that contribute to gender- or age-based discrimination or neglect. Recent advances in nutrition policy have argued for a broader concept of nutritional security, one that incorporates both food quantity and quality, and of nutrition as "food, health and care" (International Conference on Nutrition, World Declaration and Plan of Action for Nutrition, FAO/WHO, Rome, 1992). These ethnographic findings; lend strong support for such broader nutrition concepts and associated nutrition policies. The studies also suggest ways in which anthropological questions, methods, and data and community-based research can help predict or identify the nutritionally vulnerable within households and help other social and medical scientists design more effective interventions.     

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...     

钢铁工业节能减排的历史重任

重点研究了我国钢铁工业节能减排的目标,钢铁工业能耗、污染物排放的现状,我国钢铁工业与国际先进水平的差距及原因,钢铁企业联合重组取得的新进展,主动减排二氧化碳、二氧化硫气体及我国钢铁工业未来的发展方向.     

天铁科技成果管理工作实践

论述了科技成果管理的内容和意义,结合企业实际介绍了天铁科技管理的制度、体系及实施效果。通过科技创新体系和成果管理制度建设,“十一五”期间促进了科技成果的开发和转化,有多个项目分别列人天津市技术创新重点为项目、天津市二十项重点项目,推动了企业持续快速发展。     

Girlfriend, boyfriend: Age and sex differences in intimate friendship.

Investigated changes in intimate friendship with same- and opposite-sex friends in preadolescence and adolescence, using the Intimacy Scale. Ss were Israeli children from the 5th, 7th, 9th, and 11th grades (60 boys and 60 girls from each grade), who rated their friendship with a same- or opposite-sex best friend. There was a significant age difference in overall intimacy with same-sex friends. Frankness and spontaneity, knowing and sensitivity, attachment, exclusiveness, and giving and sharing were factors that changed with age. Trust and loyalty, and taking and imposing did not. Opposite-sex friendship revealed a significant increase in intimacy with age. Boys and girls did not differ in reported opposite-sex friendship in the 5th and 7th grades, whereas girls in the 9th and 11th grades reported higher intimacy than did boys. This sex-by-age pattern of interaction was particularly evident for attachment and for trust and loyalty. Girls were higher in knowing and sensitivity, giving and sharing, and taking and imposing. The implications for further differentiation among types of peer relations and interrelation of dyadic friendship and cognitive growth are discussed. (42 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Paraplane analysis from precordial three-dimensional echocardiographic data sets for rapid and accurate quantification of left ventricular volume and function: a comparison with magnetic resonance imaging

OBJECTIVES: Three-dimensional echocardiography (3DE) calculates left ventricular volumes (LVV) and ejection fraction (EF) without geometric assumptions, but prolonged analysis time limits its routine use. This study was designed to validate a modified 3DE method for rapid and accurate LVV and EF calculation compared with magnetic resonance imaging (MRI). METHODS: Forty subjects included 15 normal volunteers (group A) and 25 patients with segmental wall motion abnormalities and global hypokinesis caused by ischemic heart disease (group B) who underwent 3DE with precordial rotational acquisition technique (2-degree interval with electrocardiographic and respiratory gating) and MRI at 0.5 T, electrocardiogram (ECG)-triggered multislice multiphase T1-weighted fast field echo. End-diastolic and end-systolic LVV and EF were calculated from both techniques with Simpson's rule by manual endocardial tracing of equidistant parallel left ventricular short-axis slices. Slicing from the 3DE data sets were done by both 2.9-mm slice thickness (method 3DE-A) and by 8 equidistant short-axis slices (method 3DE-B); for MRI analysis, 9-mm slice thickness was used. RESULTS: Analysis time required for manual endocardial tracing of end-diastolic and end-systolic short-axis slices was 10 minutes for the 3DE-B method compared with 40 minutes by the 3DE-A method. For all 40 subjects the mean +/- SD of end-diastolic LVV (mL) were 181 +/- 76, 179 +/- 73, and 182 +/- 76; for end-systolic LVV (mL), 120 +/- 76, 120 +/- 75, and 122 +/- 77; and for EF (%), 39 +/- 18, 38 +/- 18, and 38 +/- 18 for MRI, 3DE-A, and 3DE-B methods, respectively. The differences between 3DE-A and 3DE-B with MRI for calculating end-diastolic and end-systolic LVV and EF were not significant for the whole group of subjects as well as for the subgroups. The 3DE-B method had excellent correlation and close limits of agreement with MRI for calculating end-diastolic and end-systolic LVV and EF: r = 0.98 (-1.3 +/- 26.6), 0.99 (-1.6 +/- 21. 2), and 0.99 (0.2 +/- 5.2), respectively. The correlation between 3DE-A and MRI were r = 0.97, 0.98, and 0.98, and the limits of agreement were -1.4 +/- 36, -0.6 +/- 26, and 0.6 +/- 8 for calculating end-diastolic and end-systolic LVV and EF, respectively. In addition, excellent correlation and close limits of agreement between 3DE-A and 3DE-B with MRI for LVV and EF calculation was also found for the subgroups. Intraobserver and interobserver variability (SEE) of MRI for calculating end-diastolic and end-systolic LVV and EF were 6.3, 4.7, and 2.1; and 13.6, 11.5, and 4.7; respectively, whereas that for 3DE-B were 3.1, 4.4, and 2.2; and 6.2, 3.8, and 3. 6; respectively. Comparable observer variability was also found for the A and B subgroups. CONCLUSIONS: The 3DE-A and 3DE-B methods have excellent correlation and close limits of agreement with MRI for calculating LVV and EF in both normal subjects and cardiac patients. The 3DE-B method by paraplane analysis with 8 equidistant short-axis slices has observer variability similar to MRI and reduces the 3DE analysis time to 10 minutes, therefore offering a rapid, reproducible, and accurate method for LVV and EF calculation.     

某复杂难选铅锌氧化矿综合利用项目节能分析

针对氧化矿矿石储量大、品位低、矿石性质复杂、难以选别的特点,介绍了某复杂难选铅锌氧化矿综合利用项目的工艺方案、主要生产指标,提出了各项节能措施,分析了项目的用能总量及主要用能工序,并对项目的能效水平进行了分析.通过开发和采用效率高、节能效果好的工艺流程、设备,并做好建筑、给排水、供配电、通风除尘等辅助和附属设施的节能,...