大型顶吹平炉冶炼硅钢

大型顶吹平炉投产以来，由于降碳速度快，因而造渣困难，脱硫能力差，长期不能冶炼硅钢。针对上述问题，对造渣工艺进行改革，获得成功，不仅降低了消耗，提高了质量，缩短了熔炼时间，而且也满足了用户对硅钢的要求，同时，取得了较大的经济效益。     

10t"O"型龙门吊的改进与探索

本文介绍10t“0”型龙门吊通过静定车架结构代替传统的超静定结构的改进，其造型美观，受力合理，降低了精度要求，节省了大量的材料，降低了成本，使制造工艺更加方便，大大降低了金属结构的自重，改善了起重机的运行状态，延长了驱动车轮的寿命，故障率低，维修费用少。     

铝冶炼供电系统节能降耗的措施

湖北丹江哆嗦业公司三期技改工程供电整流系统采用了较多的新技术，新设备，新工艺，在该前提下，对运行参数进行详细研究，达到合理利用电能的目的，同时采用全面质量管理工作的方法，成功地改善了电流的稳定性，减少了设备停运率，为安全生产提供了有力的保障，达到了节能降耗的目的，取得了一定的经济效益。     

6m立车改造

本文简单介绍6m立车改造，以及改造后设备的主要结构特点及加工范围，通过采用交流伺服系统和PLC控制，由仿形随动系统控制进给，精确完成产品加工。通过整体技术改造，扩宽了机床加工范围，提高了机床运行的可靠性、可调性和灵活性，提高了机床工作效率，提高了加工质量，达到了简化结构、减少维护工作量，降低能耗的目的，并在实践中取得了良好效果.     

烟气分析动态控制炼钢技术的应用与改进

介绍了烟气分析动态炼钢系统的组成以及模型的工作原理。在应用过程中，根据国内转炉生产的现状，进一步完善了控制系统和模型，并通过对模型的改进和优化，提高了转炉终点碳温命中率，降低了造渣料消耗，减少了吹炼过程的喷溅，缩短了转炉冶炼周期，获得了较好的冶金效果。     

在炼铁设备混料装置中用柔性摩擦传动代替刚性齿轮传动

介绍了炼铁设备混料装置采用柔性摩擦传动代替刚性齿轮传动，不仅简化了设备结构，易于加工制造，降低了加工费用，而且改善了机械设备的运行状况，延长了设备使用寿命，在实际应用中取得了很好的效果。     

余热锅炉在锌精矿沸腾焙烧余热回收中的应用

柳州锌品股份有限公司利用余热锅炉回收锌精矿沸腾焙烧余热已近８年，生产实践表明。该设备运行平稳，具有安全可靠，维修量少，使用寿命长的特点，余热锅炉在生产中的应用，不仅改善了操作环境，减少了污染，减轻了工人的劳动强度，而且节药了能源并延长了生产时间。     

铺塑防渗技术在尾矿库的成功实践

叙述了最新的铺塑防渗工艺技术，以及首次在尾矿库垂直防渗工程中的应用，铺塑防渗工艺技术使用PE聚乙烯膜作为防渗墙材料，垂直铺入地下，解决了现用尾矿库的渗水污染问题，同时还介绍了该技术的施工工艺，工程质量和检查及效果检测方法，焦家金矿利用铺塑防渗技术有效地保护了森林树木，保护了周围居民的利益，取得了较好的经济效益，环保效益和社会效益，具有进一步推广的意义。     

节俭在美国再度成为时尚

由于经济危机的影响，美国个人主义消费的时代已经结束，节俭成了新时尚。现今的美国人崇尚节俭，减少消费，比过去更具群体观念；但是，美国人也因此变得贫穷了，愤怒了，胆小了。     

氧气压缩机压送能力过大问题的分析与处理

氧气压缩机因压送能力过大，导致氧气压缩过程中回流，单位压缩能耗增大，噪声很大。我们对氧压机的能耗进行了定量分析，并以此为基础，制定了处理方案，消除了回流，降低了噪声。     

轮带式连铸连轧线生产电池锌饼的工艺及质量

本文通过对生产电池锌饼不同工艺方法的比较,认为轮带式连铸连轧线是目前生产电池锌饼最佳的工艺方案,并以该工艺方案为重点,阐述影响电池锌饼质量及性能的因素,提出生产理想产品质量所需要的合理的工艺参数及操作方法。     

锌饼卷坯厚度精度的控制

从设备、工艺、操作等方面叙述影响锌饼卷坯厚度精度的因素。     

优化合金成分与生产工艺,控制电池锌饼的合适硬度

结合四轮轮带式连铸连轧生产线生产电池锌饼卷坯的特点。阐述合金成分与生产工艺对电池锌饼硬度的影响，指出生产合适电池锌饼硬度最优化的合金化学成分与生产工艺条件。     

介绍一种生产冲挤用铝合金坯料的新工艺

哈兹列特铝板带连铸连轧工艺已被成功地用于铝和铝合金冲击挤压用坯料的生产。在对哈氏四个有关用户扫描的基础上，列举了其产品及其用途，并介绍了相关工艺及其优点。     

Actinic keratoses

Shotgun slug injuries have received little attention while shotgun pellet wounds have been well described. Twenty-two shotgun pellet and 13 shotgun slug injuries treated over a 14-year period were retrospectively reviewed. Extremity and thoracic wounds were most frequent in both groups. The incidence of vascular and nerve injuries was similar for slug and pellet wounds. Angiography was more often used to evaluate pellet wounds for vascular disruption. The rate of wound infection was 38% for slug wounds versus 32% for pellet injuries. Tissue grafting was more frequently necessary for reconstruction after pellet injury. Long-term disability was documented in 15% of patients with pellet wounds and 23% with slug wounds. Despite similarities in wound location and outcomes, the ballistic differences between shotgun slugs and pellets resulted in significant differences in wounding characteristics and extent of injury which have important ramifications in management.     

Slug Test Analysis in Vertical Cutoff Walls. II: Applications

This paper addresses practical applications of the type curve method and modified linear curve fitting method described in a companion paper for evaluating the hydraulic conductivity of a vertical cutoff wall. Sensitivity analyses were performed for factors that might influence results from a slug test in a vertical cutoff wall. The factors considered are (1) width of the vertical cutoff wall, (2) eccentricity of a well location, (3) well aspect ratio, and (4) distance from the upper and lower boundaries of the wall to a well intake and discharge section. In addition, the effects of variable hydraulic properties—hydraulic conductivity (k) and specific storage (Ss)—on the results of a slug test are evaluated. Also, the effect of initial slug size and difference between a rising and falling head slug test are investigated in connection with the variability of the hydraulic properties. Analyses show that the compressibility of the porous medium has a dominant effect. Various errors can arise from the simplifying assumptions used in slug test analysis, but these errors often tend to offset one another. Performing sequential slug tests can yield progressively lower hydraulic conductivity as a result of consolidation of the barrier wall material.     

Experimental Evidence of the Applicability of Colebrook and Borda Carnot-Type Head Loss Formulas in Transient Slug Test Analysis

Radius changes along the flow path inside a well can have a substantial nonlinear impact on head responses to a slug test. The present paper investigates the applicability of head loss formulas rooted in steady-state pipe hydraulics to account for minor and major head losses in transient slug test analysis. Such nonlinear head losses, which frequently occur when using a packer for test initiation, have not systematically been investigated before. Packer-internal turbulence is accounted for based on Colebrook’s formula, while minor head losses originating at the inlet and outlet of the packer are treated by Borda Carnot-type head loss formulas. The analysis of a specifically designed set of 12 slug tests provides extended experimental evidence of the applicability of these nonlinear head loss formulas when accounting for well bore-internal turbulence and minor head losses in transient slug test analysis.     

处理热镀锌渣的节能新炉型

热镀锌行业每年产生5万余吨的锌渣.目前处理热镀锌渣的方法很多,但都存在不足,尤其是能耗高.本文介绍的新炉型,克服了其他方法的不足,可降低能耗30%以上.     

A way of following individual cells in the migrating slugs of Dictyostelium discoideum

In the development of the cellular slime mold Dictyostelium discoideum there is a stage in which the aggregated amoebae form a migrating slug that moves forward in a polar fashion, showing sensitive orientation to environmental cues, as well as early signs of differentiation into anterior prestalk and posterior prespore cells. Heretofore it has been difficult to follow the movement of the individual cells within the slug, but a new method is described in which small, flat (one cell thick) slugs are produced in a glass-mineral oil interface where one can follow the movement of all the cells. Observations of time-lapse videos reveal the following facts about slug migration: (i) While the posterior cells move straight forward, the anterior cells swirl about rapidly in a chaotic fashion. (ii) Turning involves shifting the high point of these hyperactive cells. (iii) Both the anterior and the posterior cells move forward on their own power as the slug moves forward. (iv) There are no visible regular oscillations within the slug. (v) The number of prestalk and prespore cells is proportional for a range of sizes of these mini-slugs. All of these observations on thin slugs are consistent with what one finds in normal, three-dimensional slugs.     

锌窑渣氧化气固相反应过程分析

基于锌窑渣氧化气固相氧化反应的脱硫曲线,分析了氧化脱硫过程有明显差异的温度范围。对锌窑渣中Cu、Zn及Fe的物相组成在不同温度范围内的变化进行了研究,并据此讨论了氧化过程中Cu、Zn及Fe的行为和反应机制。结果表明：大部分的硫化锌及硫化亚铁在398K-1073K的温度范围内将被氧化,而较多的硫化亚铜是在1073K-1373K的温度范围内被氧化。铜、锌氧化产物均易与铁氧化产物化合为铁酸盐。氧化过程中形成的铁酸锌不利于锌的挥发,仅当温度大于1073K时锌才会挥发,此时铁酸锌含量已达到高温分解与化合平衡含量。