延长锰硅合金矿热炉出铁口寿命的初步探讨

阐述了锰硅合金矿热炉出铁口损坏的机理。有针对性的采用了一些维护措施，延长了出铁口的使用寿命，改善了炉况，提高了产量，降低了生产成本，获得了一定的经济效益。     

控冷电磁站搬迁方案的改进

通过大量的调查研究，查清了电磁站内渗漏水的缺陷，提出了解决方案和具体操作方法，改变了原定的搬迁方案，不仅彻底地消除了缺陷，还节约了大修费，缩短了工期，为生产创了可观的效益。     

抓斗吊车常见故障与解决措施

分析了20 t桥式抓斗起重吊车常见故障及原因,采取了相应的解决措施,从根本上杜绝了吊车的常见故障、节约了备件、降低了生产成本、减轻了维修人员劳动强度及提高了企业的经济效益.     

ZDRH-2000智能集中润滑系统在435m~2烧结机上的应用

邯钢435m2烧结机采用了ZDRH-2000智能集中润滑系统克服了传统润滑的弊端;降低了能源的消耗;减少了备品备件的消耗;大大减少了设备日常维护的工作量;提高了设备生产效率;降低了生产成本。     

民主革命时期中国共产党农业政策对政局的影响

民主革命时期,中国共产党在充分调研基础上制定的农业政策使其社会动员能力发挥到极致,成功地调动了占中国人口绝大多数的农民的政治斗争热情,巩固了中国共产党政权的政治基础;其农业政策调动了农民的生产积极性,发展了农业生产力,保证了战争条件下的军粮民食供给,奠定了革命胜利的经济基础;其农业政策改变了农村阶级力量对比,颠覆了传统农村社会秩序,完成了农村社会秩序的重建,莫定了新民主主义革命胜利的社会基础,最终夺取了全国政权.     

焙烧炉天然气燃烧自动控制系统的研究与应用

介绍了炭素焙烧炉燃烧系统的改造,新型控制系统的功能介绍、使用效果和效益分析,通过改造真正实现了清洁生产,达到了节能效果,改善了工艺水平,提高了产品质量,降低了生产成本,提高了生产效率,改善了工作环境。     

变频器在4#空分油泵控制系统上的应用

叙述了天铁动力厂4#空分系统辅助油泵应用EV2000变频器控制系统的过程,对运行中出现的溢油、油压波动不稳等故障现象原因进行了分析,提出了改进方案.改进后消除了故障现象,实现了闭环控制油泵的转速和启停,减小了对电机和电网的冲击和振动,提高了设备的可靠性,延长了电机使用寿命,保障了生产的顺利进行.     

TRT顶压控制系统及其安全性的研究与优化

介绍了天钢1~#TRT顶压控制系统,对现有的顶压控制系统进行了分析,在原有差压调节模式的基础上增加了顶压调节模式,将实际操作改为差压调节与顶压调节两种互选模式,提高了系统的发电效率;对旁通阀组的控制进行了优化,优化后极大地提高了系统的安全性,保证了炉顶压力的稳定,延长了设备的使用寿命,产生了较高的经济效益。     

小铁山矿充填工艺的应用优化与发展

本文针对小铁山矿充填系统设计及生产实际中存在的问题,通过充填工艺的改进和参数的优化,提高了充填接顶率,保证了充填质量,确保了安全生产,降低了矿石的损失和贫化,避免了西部充填频繁爆管的发生,降低了充填成本,提高了矿山的经济效益,保证了矿山的持续、稳定发展。     

高热区水冷保护技术的应用

分析了水冷保护技术在加热炉出炉辊道的应用，大大降低了工人的劳动强度，减少了事故检修时间，降低了材料、备件消耗，取得了可观的经济效益，为生产顺行、高产提供了有力的设备保障。     

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。     

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)     

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.     

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。     

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"。     

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.     

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。     

Obituary: David George Salten (1913-2006).

Obituary for David George Salten (1913-2006). He received his bachelor's degree in chemistry at New York University (NYU) in 1933, a master's degree in psychology at Columbia University in 1939, and a doctorate in educational psychology at NYU in 1944. He specialized in educational psychology and was a licensed psychologist in the state of New York. Salten was a strong advocate of promoting civil rights in the schools and served as an expert witness in school desegregation cases in Little Rock, Baltimore, and New Orleans. His New York Times obituary identified his contributions to civil rights in American education as among the most important in his career. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Starke Rosecrans Hathaway (1903–1984).

Presents an obituary for Starke Rosecrans Hathaway. Hathaway obtained both his undergraduate and master's level training with James P. Porter at Ohio University in Athens. He earned his undergraduate degree in psychology in 1927 and his master's degree in 1928. Porter persuaded him to remain in Athens as an instructor in psychology and physiology; by 1929 he held the rank of assistant professor. Hathaway's original interests in engineering persisted; he perfected and marketed a chronoscope, a psychogalvanometer, and electrical stimulation and recording devices for the study of neural processes. It is interesting to recall that one of the first uses to which Hathaway had put his psychogalvanometer was as a lie detector in helping police in Athens to solve a murder case. Hathaway's contributions to clinical psychology were recognized at the national level by the APA's Division of Clinical Psychology, which conferred its Distinguished Scientific Contribution Award in 1959 and elected him as its president in 1963. Elected to Sigma Xi and Phi Beta Kappa, an ABPP diplomate in clinical psychology, he was awarded honorary doctorates by Ohio University in 1966 and by Ohio State University in 1972. His honors were capped in 1977 when the APA conferred its award for Distinguished Contribution for Applications in Psychology. Hathaway retired from the University of Minnesota in 1971. He died at his home in Minneapolis on July 4, 1984. (PsycINFO Database Record (c) 2010 APA, all rights reserved)