国外的酸洗－冷连轧联接机组

介绍了国外酸洗－冷连轧联接机组的总体布置、机组的优越性和设备构成。结合武钢情况，叙述和分析了联接机组主要设备的特点和要求。     

电解铝整流柜事故浅析

近年来随着国内整流行业相关设备的装备技术水平不断提高，整流机组运行相对趋于稳定，但从现已投运的大电流机组看仍然暴露出不少的问题，尤其在整流供电设备方面，已经出现了许多设备事故，造成这一局面的因素很多，但设备因素是导致事故发生的主要原因，我们通过分析研究对大电流整流机组采取了一系列的措施，有效地预防了整流柜事故的发生。     

国外的酸洗—冷连轧联接机组

介绍了国外酸洗－冷连轧联接机组的总体布置、机组的优越性和设备构成。结合武钢情况，叙述和分析了联接机组主要设备的特点和要求。     

DMS二十辊轧机设备改进

宝钢股份不锈钢事业部的不锈钢冷轧二十辊轧机在安装调试中发现存在一些问题，为保证机组的正常投产运行，对DMS二十辊轧机设备系统进行了技术改进，满足了不锈钢的生产工艺要求，提高了设备技术水平，保证了机组的正常投产，取得了显著成效。     

本钢冷轧厂热镀锌机组改造初步方案介绍

针对本钢冷轧厂热镀锌机组改造初步方案从工艺及设备两方面进行了介绍分析，指出了现机组存在的问题及改造后预期达到的效果，并就一新增加的重要设备进行了详细论述。     

本钢连续退火机组简介

通过对比宝钢1800连退机组，简介本钢适退机组的工艺流程和设备组成及关键设备的主要性能参数，得出本钢连退机组的装备位于国内领先水平。同时介绍了该机组投产以来暴露的问题和改进措施。     

高炉BPRT机组的改进

安钢集团永通公司BPRT同轴机组自投运以来，经过一系列改进使机组运行更加平稳可靠，减少了高炉的故障休风次数，为稳定生产奠定了良好的设备基础。     

不锈钢带材退火酸洗技术在宝甬特钢厂的应用

不锈钢带材冷热兼用退火酸洗机组是正在建设中的宝甬特钢厂的主要生产机组之一，介绍了该机组的生产能力，产品方案、主要生产工艺和设备及所采用的新技术。     

高产能推拉式酸洗机组工艺路线研究

从与传统推拉式酸洗机组的区别入手，介绍了推拉式酸洗机组实现高产能的工艺路线和主要设备配置。     

富有竞争力的镀锌彩涂联合机组

８０年代末以来，一种镀锌彩涂联合机组问世。冷轧带钢在联合机组先热镀锌再彩涂，建设１套联合机组与分别建设单独的热镀锌机组及彩涂机组相比，有如下特点：（１）热镀锌、彩涂两机组入口段、出口段设备是基本相同的，故而建联合机组基本可省掉１套入口段、出口段设备。...     

Introduction to the special section on cognitive processes and psychotherapy.

Theoretical models featuring cognitive processes have played a fundamental role in advancing knowledge of psychopathology and its treatment and have emphasized the importance of cognition in psychotherapy. Recognition of the importance of cognition in psychotherapy has led to a number of questions that are addressed by the articles in this special section of the Journal of Consulting and Clinical Psychology. Cognitive therapy is well represented in the articles in this special section, but therapeutic procedures that do not represent typical cognitive therapy are also examined. The articles in this special section focus on homework in the modification of cognition, cognition in the treatment of anxiety in adults and in children, change in depressive cognitions in children, cognition and rapid change in the treatment of depression, and the role of cognition in the treatment and prevention of depression that is recurrent. Examination of these types of questions holds the possibility of advances in existing treatments and the possibility of innovations in new treatments. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

某铀矿区水稻土—地表水铀含量对稻米铀含量的影响

以水稻土—地表水铀含量为视角,从水稻土剖面铀含量分布规律、水稻土与下伏岩体稀土元素特征、不同河流不同河段水稻土—地表水—稻米铀含量特征、水稻土与稻米铀含量关系4个方面研究721铀矿区稻米铀含量成因。结果表明,水稻土剖面铀含量从表层至半风化花岗质基岩层呈明显降低的特征,说明水稻土铀含量高的原因不是土壤母质铀含量高;岩石与水稻土稀土元素标准化模式均表现为向右倾斜型,均属轻稀土富集型,轻稀土分馏明显,表明水稻土为还原环境,吸附作用较强;不同河流不同河段水稻土—地表水—稻米铀含量平均值的特性均为上游最低、中游最高、下游次之。铀矿区地表水环境符合铀元素在水稻土中被平衡吸附的动力学条件,有利于铀元素在矿区内河流中游地区的水稻土中沉淀富集;正在采矿区水稻土与稻米铀含量具有高度的空间耦合性,呈指数正相关关系,相关系数0.749。矿区内河流沿岸稻米铀含量的分布特征是由铀元素的迁移途径决定的"采矿活动(铀尾矿露天堆放)→地表水→水稻土"。     

球团链箅机回转窑工艺中氯和硫元素迁移规律

摘要：对链箅机回转窑工艺中各段球团样品进行实验分析,研究了氯元素和硫元素在链箅机回转窑工艺中的迁移规律,明晰了烟气中HCl的生成机制。结果表明,球团原料中的氯元素主要是以NaCl的形式存在,氯元素有一部分在链箅机抽风干燥段会转变成HCl气体并进入烟气,一部分在链箅机预热Ⅱ段之后以NaCl的形式汽化进入烟气,剩余的氯元素仍以NaCl的形式存在于成品球团矿中。烟气中的HCl气体是在抽风干燥段,由富含SO2的烟气与含水球团料层中的NaCl发生反应生成的,烟气中SO2转变成Na2SO4重新固定于料层中。在预热Ⅰ段和预热Ⅱ段,烟气中的SO2与原料中碳酸钙分解生成的游离CaO反应生成CaSO4,也会重新固定烟气中的SO2。     

帘线钢中氮含量对TiN析出的影响

 研究了攀钢新钢钒公司生产帘线钢72A过程中钢中氮含量变化对钢中TiN夹杂析出的影响。研究发现,随着钢中氮含量的升高,钢中析出的TiN夹杂数量变多,尺寸变大。热力学研究表明,在帘线钢中TiN一般只能在固相区形成,考虑元素偏析对凝固前沿元素富集的影响,凝固过程中TiN能在固液两相区析出。在帘线钢生产过程中,为了控制钢中TiN的析出,除了控制钛含量,控制钢中氮含量及氮偏析更加重要。理论计算结果表明,当钢中钛的质量分数控制在0.0003%~0.0005%区间时,将钢中氮的质量分数控制在0.0017%~0.0029%区间内能显著降低乃至杜绝帘线钢中TiN的析出。攀钢将帘线钢中钛、氮的质量分数分别控制在0.0005%以下和0.002%以下,显著减少了钢中TiN的析出,个别炉次中没有发现尺寸大于2μm的TiN夹杂。     

2002年铂市场观察与思考

2001年钯价格高涨,铂、钯相差一倍的价格推动着汽车工业中铂的消费增长,加之中国首饰业用铂量的继续攀升,2002年全球铂市场连续第四年供应短缺,缺口增加到49万盎,全年的平均价为539.13美元/盎司,比2001年上涨1.9％。未来,鉴于世界汽车尾气排放标准的日益严格,铂在汽车工业中的应用如日中天;首饰业消费也将继续增长;而供应由于南非Anglo公司产量的调低,有可能加剧市场的短缺。估计2003年的铂价将高位盘整,预计年平均价在578美元/盎司。     

NF-κB regulates prenatal stress-induced cognitive impairment in offspring rats.

The study was designed to investigate whether nuclear factor of kappa B (NF-κB) plays regulating role in prenatal stress-induced cognitive impairment and oxidative damage in offspring rats. The authors used a rat model to study plasma levels of corticosterone and oxidative DNA damage (8-OH-dG), protein expression of P65/p50 NF-κB, and cognitive function in female and male offspring rats in middle pregnant stage and later pregnant stage. Prenatal stress affected the capability of learning and memory in the offspring, especially in later stage stressed female offspring. The levels of corticosterone and 8-OH-dG were enhanced in response to stress. Both middle and later stage stresses induced a significant decrease in P65 expression and a significant increase in P50 expression in female offspring. In addition, later stage stress induced a significant decrease in P50 expression in male offspring. These results suggest that NF-κB complex may be acting in a positive regulatory fashion in prenatal stress-induced cognitive impairment and that oxidative DNA damage may exacerbate the activation of NF-κB. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Flow Distribution Parameters in Relation to Flow Resistance in an Upflow Anaerobic Sludge Blanket Reactor System

The use of flow resistance in the distribution of flows is well known in traditional hydraulics. To evenly distributed flows, flow resistance forms the basis of flow distribution in pipes connected in parallel. Flow distribution in different zones of upflow anaerobic sludge blanket (UASB) reactors is well documented in existing literature, and so far modeling of flow distribution parameters, i.e., the fraction of inflow entering into the bed, the fraction of flow bypassing over the bed and entering into the blanket, and the fraction of inflow to the bed entering into the blanket, has remained empirical in nature. The role of flow resistance in the distribution of flows in UASB reactor systems is still unexplained. In this study, some of the available data on flow distribution parameters are analyzed to assess if there is any correlation between these parameters and flow resistance. It is found that with an increase in flow resistance in the UASB reactor system, the magnitude of short-circuiting flows at the reactor bed increases. Also, the flow distribution at the blanket and settler levels of UASB reactor systems is related to parameters influencing flow resistance. Some of the functional forms derived in this study are expected to form the basis for representing flow distribution in the simulation studies of UASB reactor performance.     

Cohesive Sediment Characterization by Combined Sedimentation and Rheological Measurements

A laboratory characterization of cohesive sediment has been carried out in which data obtained from standard sedimentation and rheological measurements were combined in a determination of the critical solid concentration for the detection of elasticity in a weakly cohesive suspension. The corresponding storage modulus and shear stress are very critical in any in situ rheometry of sediments, especially in the study of mud-water surface erosion in a flume. Sedimentation results showed that particle size distribution rather than surface treatment controlled the rheological behavior of the suspension while the critical solid concentration for the appearance of three-dimensional space-filling network, showing some measurable elasticity in the suspension, occurred in the region of 0.015. This parallel between the consolidation behavior and shear rheology development for the flocculating system has been established. This technique could be an adjunct to the laboratory characterization of cohesive sediments for the estimation of critical shear stress for surface erosion, especially in a typical flume experiment under water wave pressure.     

Impaired control of visual attention in schizophrenia.

To investigate attentional impairment in schizophrenia, the authors examined the performance of 22 patients with schizophrenia and 16 healthy control subjects in 4 visual search tasks that varied in perceptual requirements and in the need for precise attentional control. The rate of search was slowed in the patients in all tasks. However, the degree of slowing was largest in tasks requiring precise attentional control and smallest in tasks that were perceptually difficult but required less attentional control. This pattern of results indicates that the primary impairment of attention in schizophrenia lies in the control of attention and not in the selection processes that operate once attention has been directed to an object. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

拜耳法氧化铝生产过程中锂的富集机制研究

研究了拜耳法氧化铝生产过程中锂的富集机制。结果表明,在拜耳法氧化铝生产工艺中,铝土矿中约有80%金属锂在高压溶出过程中以铝酸锂的形式进入铝酸钠溶液,后经晶种分解全部进入结晶氢氧化铝中,在氢氧化铝的高温煅烧过程中,因升华作用损失约25%的金属锂,其余以氧化物形式富集在氧化铝制品中,其含量随着入磨铝土矿中金属锂含量的增加而增加、随铝土矿A/S比的增加而降低。