钨酸钠溶液中的钨钼分离研究

研究了用硫酸铜沉淀法除去粗钨酸钠溶液中钼的方法。试验在一定的条件下，使钼酸钠优先与硫化钠反应形成硫代钼酸盐，钨化合物仍以钨酸盐形式保留的溶液中。硫化后的粗钨酸钠溶液加入硫酸钠，硫代钼酸根与之结合生成难溶化合物沉淀，实现钨钼的分离。该方法流程简单，原材料来源广泛，操作条件易于掌握控制，污染小。     

沉淀法分离钨钼的研究进展

针对目前钨钼相分离是钨冶金中的一个技术难题，综述了沉淀分离钨钼的各种方法，如三硫化铜沉淀法、钨酸沉淀法、络合均相沉淀法、胍盐沉淀法、选择性沉淀法、钨盐沉淀法等，叙述了各种方法的原理、特点及其应用，并对沉淀法未来的研究方向进行了讨论。     

二期高镍锍分离生产及技术改造实践

介绍了金川公司第二冶炼厂二高锍车间生产工艺流程，二期高镍锍磨浮分离的特点，投产５ａ来的生产实践，以及为达到设计指标而进行的技术改造，并提出了今后努力的方向。     

稀土元素的选择性沉淀分离

本文研究了从ＤＺＥＨＰＡ中一步沉淀分离Ｅｕ／Ｎｄ，Ｄｙ／ＮＤ，Ｅｒ／Ｎｄ，用含有硫酸钠的硫酸溶液作为沉淀剂分离稀土，研究发现，Ｎｄ与Ｅｕ的沉淀分离比Ｄｙ与Ｅｒ更容易，从而导致有机相中重／轻稀土摩尔比增加。     

高冰镍浮选分离研究现状及强化分选措施

对高冰镍浮选分离技术的理论和生产实践以及它的浮选特点、影响因素作了概述，并对强化高冰镍的分选提出了几点看法。     

乳状液膜的溶胀研究

研究了乳状液膜的溶胀因素，提出了采用膜相添加剂改善溶胀的方法及添加剂的选择原则，阐述了ｐＨ对溶胀的影响规律，讨论了Ｗ／Ｏ乳液体系常见分离工艺中改善溶胀的一般方法。     

钢厂污水的斜窄流沉渣除油设备

阐述了斜窄流沉渣浮油过程与原理，设备结构与材质，以及在钢厂污水处理中的应用及前景，其单位占地产能，为普通重力沉降设备的4倍，斜板或斜管设备的2倍，提出了深度净化少部分出水以防微细渣或油恶性积累，及充分及污水所含铁皮渣吸附油的必要与可能性。     

钨钼分离的研究进展

针对钨钼分离的技术难题，将近几年来钨钼分离的研究现状进行了简单的介绍，并指出了钨钼分离今后的研究方向。     

连续泡沫分离蛋白质

本文以空气－明胶水溶液体系为研究对象，较为详细地考察了通气量，进料流量，进料浓度，进料位置，泡沫高度，溶液ｐＨ值等因素对连续泡沫分离明胶过程中的明胶富集变化的影响。     

等效分离系数及多组分稀土串级萃取分离工艺设计

以多元稀土串级萃取体系的状态方程为基础，引入等效分离系数，将多元串级萃取体系描述为对分离系数进行修正后的等效双组分分离体系；提出了等效分离系数的计算方法，并对多元串级革取的分高工艺进行设计计算．计算机仿真结果表明，等效分离系数为萃取体系槽级中的最小有效分离系数．     

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。     

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)     

我国“十五”连铸技术发展方向及预测

概述了我国连铸生产10年来取得的主要成绩,分析了世界连铸生产发展的主要特征、我国“十五”期间连铸发展的特征及存在的差距,对连铸生产发展的重点问题提出看法。     

Discrete Element Modeling of Contact Creep and Aging in Sand

In this study, aging in dry, clean sand induced by contact creep is investigated through numerical simulations using the discrete element method. Simulation results demonstrate that contact creep initiates the redistribution of contact forces. Although contact creep produces a very small decrease in porosity (approximately 1.7%), a significant change in the contact force distribution is produced in the aged sample. The contact forces ultimately become more uniform in both magnitude and spatial distribution. This homogenization of contact forces leads to more stable force chains and therefore produces an increase in the small-strain stiffness, early strength, and dilatancy in the aged sample. Such increases are not found in the sample prepared to the same porosity as the aged sample but without aging. This is because, in generating this sample, the contact creep is not allowed and therefore its associated contact force distribution is less homogenized compared with that in the aged sample.     

O. Chanute, C.E.

Octave Chanute was one of the leading civil engineers in the United States in the period between 1850 and 1890. His work on eastern and western railroads was unsurpassed. He began his bridge building career in 1856 and designed his last major bridge in 1888. Starting in 1890, he began his study in the work that others conducted in the area of manned flight and designed and tested many of his own gliders. He later assisted the Wright Brothers in their experiments in Dayton and at Kitty Hawk.     

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。     

转炉双渣操作炉渣中磷微区分布规律

对转炉双渣操作时的前期渣和终点渣中微观区域里磷的微观富集规律进行了研究,发现微区碱度Rm为2.0～2.5的微区中磷的富集程度最高;前期渣和终点渣中钙质量分数分别为16%～20%、33%～37%的微区中磷质量分数较高;微区磷富集与硅质量分数关系密切,终点渣微区中硅质量分数为9%～12%、前期渣微区中硅质量分数为13%～14%时,磷质量分数最高;微区铁质量分数对磷富集的影响明确,铁质量分数为5%～9%时磷质量分数最大;镁质量分数低的微区中磷质量分数较高。     

A longitudinal study of short- and long-term activity levels in male and female spontaneously hypertensive, Wistar-Kyoto, and Sprague-Dawley rats.

The pattern of locomotor activity across development was assessed in male and female spontaneously hypertensive (SHR), Wistar-Kyoto (WKY), and Sprague-Dawley (SD) rats. Open field activity did not indicate hyperactivity in the SHR. Instead, the SD strain was generally more active. Strains and sexes did not differ in open-field locomotor response to drug challenges. When short-term (10-12 min) activity in different apparatuses was compared, the SD were most active in the open field, the SHR in the residential figure-eight maze, and the WKY in the running wheel. Long-term tests indicated hyperactivity in the SHR in the residential figure-eight maze and hypoactivity in the SD in the running wheels. Until such strain differences in activity are thoroughly defined, the use of the SHR as a model of attention-deficit/hyperactivity disorder is limited. (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"。     

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.