国产3000中厚板轧机概述及技术展望

分析了我国中厚板轧机技术现状,对我国自主设计制造的3000中厚板轧机成套设备技术进行展望,并对我国中厚板成套设备技术的发展提出了建议。     

我国煤调湿技术的研发与应用现状

目前我国煤调湿技术发展迅猛,通过分析煤调湿技术在我国的实际应用情况,结合相关专利的申请情况,对我国煤调湿技术的研发与应用现状进行阐述,指出实际生产过程的技术转化问题。     

语音识别在现代电子信息产业中的应用

随着社会科技的不断发展,我国的语音识别技术在不断的进步,语音识别技术也在应用于越来越多的领域.我国的职能计算机专家组专门立项研究开发语音识别技术,已经取得了长足的进步,我国的语音识别技术达到了具有自身特点的国际水平.本文就我国语音识别技术在现代电子信息产业中的应用进行了论述.     

我国金属矿山选矿技术进展及发展方向探析

我国作为世界上国土面积排名第三的国家,金属资源和稀有矿在世界的占有也是名列前茅。我国的钢铁行业随着经济的快速发展,原材料金属矿石的需求量变大,因此如何根据我国的地质环境和金属矿石的分布情况,选择合适的选矿技术以及未来技术的发展方向都是确保我国重型金属钢铁行业稳定发展的重要前提。因此本文主要对我国金属矿石的选矿技术和未来的发展方向进行研究分析,旨在解决我国选矿技术存在的疑难杂症,为我国钢铁冶炼行业提供稳定的原材料,促进我国金属矿产资源的利用技术的发展,为我国的基础建设和社会的发展提供牢固的保障。     

我国铝冶炼技术现状及发展趋势

全面回顾了我国铝冶炼技术的发展现状 ,在分析了国内铝冶炼技术存在不足的基础上 ,指出了我国铝冶炼技术的发展趋势     

2010年我国轧钢生产技术发展战略目标及有关建议

介绍了世界轧钢生产技术的发展现状及水平,论述了我国轧钢生产技术的发展现状及存在的主要差距,指出了2010年我国轧钢生产技术的发展战略目标,提出了我国为赶超世界轧钢生产技术的先进水平而应采取的战略性措施及建议。     

关于机械自动化技术发展的要点探讨

机械自动化技术是我国机械制造业的重要应用技术,它的技术在相关产品的生产应用上非常多。随着我国相关技术实力的上升,我国的机械自动化技术发展也呈现出较高的速度,那么本文我们就来探讨一下我国机械自动化技术的发展要点。     

现代电弧炉高效低耗炼钢技术在我国的应用与发展

查阅90年代以来文献,对现代电弧炉高效低耗炼钢技术在我国的应用与发展进行了综述。重点介绍了电弧炉炉料结构优化、强化冶炼技术、铁水热装技术、余热利用技术等提高电弧炉效率或降低消耗的技术在我国的应用及控制情况,并通过引用文献对我国现代电弧炉炼钢技术的发展目标和关键技术进行了叙述和说明。     

浅谈我国转炉炼钢技术的发展与展望

钢铁产业作为我国国民经济发展的基础性产业,其生产技术上的进步对我国钢铁产业的发展具有重要意义。基于此,本文针对我国转炉炼钢技术上的进步进行具体分析,并对我国转炉炼钢技术的未来发展展望提出实质性建议,旨在促进我国钢铁生产技术蓬勃发展。     

国内外炼铁生产技术发展现状与趋势

本文概述了近几年国内外炼铁技术发展现状,分析了我国炼铁技术与先进国家的差距;并就炼铁业几项主要技术的发展状况提出了我国炼铁技术今后的发展方向。     

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)     

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。     

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"。     

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.     

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.     

立式退火炉带钢运行稳定性控制

带钢瓢曲是影响带钢炉内稳定运行的主要因素,为防止带钢在炉内发生瓢曲,提高带钢炉内运行稳定性,提出优化炉区张力设定方法,同时增加原料带钢易瓢曲等级判定以及产线降速过程中炉区最低运行速度功能,为预防带钢瓢曲提供可靠数据依据,旨在减少带钢炉内瓢曲,避免由于带钢瓢曲造成炉内断带。实际应用效果表明,提出的炉区张力优化、带钢易瓢曲等级判定及炉区最低运行速度功能能够满足现场实际应用需求,可有效提高带钢炉内运行稳定性。     

焦炭硫分影响因素分析

简要归纳了国内目前焦炭硫分预测方法,指出了不足。通过32个单种煤硫分形态与焦炭硫分关系研究,分析了硫分形态对焦炭硫分的影响;通过分析炼焦过程炼焦煤硫分变化,提出传统室式炼焦过程脱硫反应和固硫反应并存,煤气中H2具有脱硫功能,灰中CaO和MgO是固硫剂;60个样品试验数据的回归分析结果表明,煤的全硫和灰中(CaO+MgO)含量是影响焦炭硫分的主要因素。     

冀西北水晶屯金矿成矿控矿构造研究

水晶屯金矿床位于张宣幔枝构造轴部,水泉沟-大南山碱性角闪二长岩杂岩体的西缘。金矿化分布于尚义-赤城韧脆性剪切带中段。含金矿物主要为自然金和银金矿,赋存于石英、黄铁矿、方铅矿裂隙和胶结物颗粒间,矿石构造为细脉状、浸染状和团块状,围岩蚀变为硅化、黄铁矿化、绢云母化等。通过对本矿区的元素相关系数、硫、铅、氢、氧同位素特征等的研究分析,认为水晶屯金矿成矿物质主要是来源于深部的核幔物质,受构造控制明显。     

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)     

冷却速率对KR脱硫渣中硫析出行为的影响

KR脱硫渣中主要成分(CaO)为转炉冶炼的优质造渣原料,通过氧化性气氛将渣中硫脱除后可将其用于转炉冶炼.但由于炉渣冷却制度不同,渣中硫的析出行为和赋存状态会发生变化,对炉渣氧化脱硫效果产生影响.基于此,以合成渣的形式探究冷速对KR脱硫渣中硫析出行为的影响,旨在明确KR脱硫渣中硫赋存状态及析出行为与冷却速率的关系,为后续...