帘子布热处理生产线技术转化的管理

中国神马集团２．０万ｔ技改工程项目的帘子布热处理生产线，采用引进日本中外炉工业株式会社目前国际最先进的技术，依靠国内机械部第五设计院的技术力量进行图纸转化，主体在国内制造，关键部件由国外进口，神马集团进行项目组织，协调。经过两年的努力，于１９９８年５月建成投产，该生产线的各项技术经济指标及产品质量均达到国际先进水平。该项目节省外汇５００多万美元，国内掌握了全套设备制造技术，为提高装备技术水平和进入国际市场创造了良好条件。　　帘子布热处理生产线由开卷、前后储布架、浸胶、干燥、热定型、卷挠等设备组成…     

利用回转窑进行氯浸渣脱硫生产线的工程设计与应用

为了综合利用冶炼废渣,开发设计了利用回转窑进行氯浸渣脱硫的生产线。介绍了该生产线设计规模、工艺流程、主要设备、工艺配置、三废治理情况等。该生产线生产运行稳定,脱硫率为95.87%,取得了良好的经济效益和环境效益。     

福山厂2号连续镀锌线的设备和操作

日本钢管公司为适应汽车对合金化热浸镀锌钢板的需要，１９９０年４月在福山厂建成２号连续热浸镀锌生产线。该生产线以专门生产汽车用外板为目的，采用了许多新技术。主要设置了以下设备；改良型火钕直接加热带原退火以锌锅，感应加热合金化炉及生产铁－锌双镀层钢板的电镀设备。通过有效利用这些设备，得到优良的表面质量、抗粉化性和力学性能，正按预定目标以高生产率生产优质镀层钢板。     

节能信息

亚洲规模最大的热浸镀锌生产线 四川省引进亚洲规模最大、生产效率最高的一条低温环保热浸镀锌生产线,该生产线使四川省热浸镀锌工艺步入国际先进行列。 这条生产线是由成都铁塔厂控股的成都贝格镀锌销售有限公司从德国引进的。拥有亚洲最大的一口锌锅,熔锌量达340t,采用国际先进的“干法”进行热浸镀锌。     

莱钢中小型生产工艺及设备主要特点

简要介绍了莱钢引进的中小型全连续式轧机生产线的工艺、设备、电气自动化的特点。该生产线工艺装备合理，自动化装配水平先进，代表了90年代中小型轧机的水平。     

氰化提金工艺的最新进展

本文综述了氰化法提金工艺的最新进展，着重评述了氰化助浸工艺，浸出设备，堆浸工艺等在理论、工艺和实践研究方面的国内外最新发展状况。     

难浸金矿细菌氧化工艺的综述

本文为难浸金矿细菌氧化工艺的综述性调研报告。报告概述了细菌氧化法的原理和各项工艺参数，工业实践和主要设备、技术经济评价以及实施该工艺的主要技术难点。文章最后还对难浸金矿细菌氧化工艺的发展提出了建议。     

连续热镀锌工艺生产线自动化设备研究与应用

随着市场经济的不断变化,热镀锌工业也得到了大规模的发展,随着电镀锌行业的竞争加剧和热镀锌工艺成本的增加,传统工艺不能够满足企业需要的情况下,热镀锌工艺的改革成为了企业发展的主要趋势,针对这种背景下提出连续热镀锌工艺生产线自动化设备研究与应用,针对连续热镀锌工艺生产线自动化设备进行研究的同时提出连续热镀锌工艺生产线自动化生产线工艺流程,针对连续热镀锌工艺生产线自动化设备生产设计特点进行研究。     

连续热浸镀锌线物料的跟踪

介绍了鞍钢连续热浸镀锌线工艺概况,并以鞍钢大型宽带钢连续热浸镀锌线为例,通过对钢卷数据和钢卷焊缝的跟踪、生产线控制数据设定方法的阐述,介绍了在连续热浸镀锌线上如何实现钢卷的跟踪。     

安钢年产120万吨链篦机-回转窑球团生产线达产攻关实践

介绍了安阳钢铁集团120万t／a链篦机-回转窑酸性球团生产线的工艺特点、主要设备，以及试生产阶段的有关生产情况，通过对生产线的工艺改造、操作参数优化、关键点的控制以及周密的安排与部署，实现了该生产线的顺利达产。     

Drug-associated hemorrhagic enteritis

Drug-associated hemorrhagic colitis are divided into antibiotic associated hemorrhagic colitis (AAHC) and other drug associated hemorrhagic colitis. AAHC are mainly caused by oral usage of Ampicillin and its derivatives (85%). Initially AAHC are believed to be caused by Klebsiella oxytoca overgrowth. However, these organisum has no exotoxin like Clostridium difficile and pathogenesis of AAHC are still unresolved. Typical AAHC are diagnosed by colonoscopy with diffuse hemorrhage and edema mainly found in descending colon and transverse colon. NSAIDs are also the cause of hemorrhagic colitis like AAHC. Mephenamic acid are famous for this complication. Diarrhea is one of the main complication of oral 5-fluorouracil administration and even causes hemorrhagic colitis. Its histology are characteristic in gland atrophy. Gold colitis are reported 36 cases in rheumatoid arthritis patients. Exact mechanism of bleeding are not understood. NSAIDs may cause collagenous colitis and or lymphocytic colitis in RA patients. Other rare hemorrhagic colitis are associated with azathioprine, methyl dopa, interferon alfa etc. NSAIDs and anticoagulants are well known drugs for complication of GI bleeding making hemorrhagic enteritis.     

Energy-Efficient Trajectories of Unmanned Aerial Vehicles Flying through Thermals

This study presents optimal energy-efficient flight trajectories of a generic unmanned aerial vehicle (UAV) flying through a vertical moving thermal cell. A two-dimensional point-mass model of a jet-engined UAV in the vertical plane is used. UAV equations of motion and the thermal wind expression are normalized for numerical efficiency and four fundamental parameters are identified. UAV flights through a thermal cell are formulated as nonlinear optimal control problems that minimize the average thrust per unit time, subject to UAV performance constraints and periodic flight boundary conditions. These problems are converted into parameter optimizations and solved numerically. Fuel efficiencies of these optimal trajectories are compared with those of reference optimal flights in the lack of thermal winds. Both constant thrust and variable thrust solutions are obtained. Two patterns of optimal flights through thermals are identified, and their characteristics are analyzed. Both patterns of optimal flights are also explained from an energy maximization point of view. Effects of the fundamental parameters on optimal UAV flights are examined. Results suggest that significant improvements in UAV fuel consumption are possible by taking advantage of thermal energies.     

Arachnoid cysts on computed tomography

The appearances of arachnoid cysts on computed tomography are presented. They are well defined lesions with the same density as cerebrospimal fluid and are not contrast enhanced. Superficial lesions are biconvex or semicircular and may have a characteristic straight inner margin. Deep lesions and cysts between the cerebellar hemispheres are spherical and some may be difficult to differentiate from cystic neoplasms. The etiology and clinical manifestations of arachnoid cysts are also briefly discussed.     

浅谈推行标准化操作的实践

针对推标工作的指导思想、基本原则、基本步骤、具体做法、实施措施、工作速度,制定了有效办法,保证了推标工作的有序进行,克服了推标工作的随机育目性,在岗位操作标准制定时,打破以往三大进修规程的理论体系强,岗位操作弱的特点,抓典型、树样板、以点带面、以面推动全局。     

Optimum Design of Welded Steel Plate Girder Bridges Using a Genetic Algorithm with Elitism

The genetic algorithm (GA) is a general optimization technique that has some unique features that are especially suitable for structural engineering problems. This work uses a simple GA with elitism to find the optimum design of welded steel plate girder bridges. The objectives are to minimize the weight and the cost of the girders. Two types of plate-girder bridges are studied: a single-span bridge and a two-equal-span continuous bridge. Bridges with various span lengths, in increments of 20?ft, are investigated; results are tabulated, parametric studies are made, and meaningful conclusions are drawn.     

赣南钨矿山资源状况调查与思考

通过赣南钨矿山资源调查,反映钨矿山资源状况不容乐观。据地质报告中统计,赣南累计探明WO3储量149.98万t,其中上平衡表113.67万t,而保有储量仅有46.7万t;国有钨矿山保有储量26.4万t,可利用的储量10.4万t,可服务年限大都在10a以下。因此,建议尽快对赣南的国有钨矿山开展新一轮的地质找矿,寻找新的接替基地,控制钨矿产量,对尾砂综合回收和利用。     

中国锰系铁合金现状与发展

介绍了世界、中国锰系铁合金生产、消费和进出口情况，分析了锰系铁合金的需求发展与变化，预测了2003年中国锰系铁合金消费、出口与生产情况，展望了2005年中国锰系铁合金的消费需求，提出了发展建议。     

客运专线用100米钢轨矫直断裂原因分析

 客运专线用100米60kg/m重轨在焊轨厂拼焊后,当四面矫直时发生断裂。采用光学显微镜及扫描电镜（TEM）等方法对钢轨矫直时断裂原因进行了分析和研究。结果表明：钢轨断裂是由于距钢轨端部约100mm轨底边缘处存在凸台缺陷,此凸台在钢轨拼焊后进行除瘤时除瘤刀将其铲平,致使钢轨产生冷裂纹,进而在矫直时断裂。通过控制万能精轧上下辊的辊径差以及调整轧制线高度等方面,使钢轨出轧机时尽量保持平直,避免上翘或扣头,从而消除凸台缺陷的产生。     

Strategic risk management in innovative metallurgical investment

Recommendations are made regarding risk reduction when investing in intellectual property. The low level of investment by metallurgical enterprises in intellectual property is explained. Methods of logical research, analysis, synthesis, and planning are employed. Approaches to strategic risk management in innovative metallurgical investment are outlined. The preconditions for innovation in metallurgical development worldwide are discussed, and corresponding innovative development strategies are formulated. Methods of risk reduction are formulated, and practical examples of investments in intellectual property that might be more attractive to metallurgical enterprises are presented.