Chemical Bond Calculations of Crystal Growth of KDP and ADP

A novel method was proposed to calculate the crystal morphology (or growth habit) on the basis of chemical bond analysis. All constituent chemical bonds were distinguished as relevant and independent bonds according to their variations during the crystallization process. By employing the current method, the influence of specific growth conditions on the crystal morphology can be considered in the structure analysis process. The ideal morphologies of both KDP (KH2PO4) and ADP (NH4H2PO4) crystals were calculated and compared with our obtained crystallites at room temperature, which validates the present calculation method very well.     

Crystallographic Analysis of Tapering of ADP Crystallites

On the basis of crystallographic characteristics of ADP (ammonium dihydrogen phosphate) crystals and the selected growth conditions, the growth habit of ADP crystals was studied. In comparison with pyramidal planes, the growth rate of prismatic faces is slower and more sensitive to the additives and impurities for ADP crystals. When the supersaturation is low, the advance of growth steps on prismatic face can be blocked by ethanol or impurities, the crystal morphology is changed from the tetragonal prism to shuttle (i.e., the tapered shape). The tapering formation of ADP crystallites was structurally studied in a novel view.     

粘结稀土磁致伸缩材料制备工艺研究

研究了制备工艺对粉末粘结材料的磁致伸缩性能的影响。结果表明,在磁场下成型可以提高粉末粘结材料的磁致伸缩性能,固化温度对粉末粘结材料的密度及抗压强度有明显影响。     

高强钢筋在大气中的腐蚀试验研究

采用显微镜技术和腐蚀速度测量法研究S400、表面预淬火的S500、含钒的S500 3种钢筋暴露在大气中的抗腐蚀行为.同时还研究了在水泥水合作用过程中,水泥与钢筋之间的结合力对钢筋腐蚀的影响.实验结果表明,具有较高抗大气腐蚀能力的钢筋类型是含钒的S500.相反,抗腐蚀能力最小的是表面预先淬火的S500钢筋.从ESEM观测到的形貌和钢筋表面的铁锈层的厚度结果看,钢筋与混凝土之间的结合力随侵蚀时间(从45天～122天)的延长而减小.     

A review of the neurobiological effects of psychotherapy for depression.

Although randomized, controlled clinical trials have shown that different forms of psychotherapy may be efficacious for depression, psychotherapy has not been widely reported to have effects upon the neurobiological concomitants of depression in similar ways as medication. Neuroendocrinal changes that occur during depression (principally hypercortisolaemia) produce structural and functional alterations to the prefrontal cortex, hippocampus, and amygdala, plus the connectivity between these regions of the brain. This article reviews the evidence to date regarding the neurobiological effects of psychotherapy for depression and suggests a hypothetical pathway linking the nurturing effects of the therapist–patient “bond” and restoration of neuroendocrinal “balance.” This pathway may provide a neurobiological causal link between psychotherapy and alleviation of depression in the same way as that which exists for pharmacological treatments, and argues for a model of depression that includes both biological and psychological effects of psychotherapy when considering treatment choice and application. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

烧结混合料配加粘结剂试验

烧结混合料中配加粘结剂后提高混合料的成球率，改善了烧结料层的透气性，取得了好的经济效益。     

钢构件表面涂层结合强度的研究

对影响涂层结合强度的涂层厚度、涂层种类、表面预处理方式等因素进行了综合评述,并就喷砂处理的喷射角、磨料粒度和工作气压等参数对涂层结合强度的影响进行了实验研究。结果表明：适当增大磨粒直径、工作气压和喷射角度,均能增大基体表面粗糙度,明显提高涂层结合强度。     

复合粘结硬质合金轧辊在棒材生产线的应用

介绍了复合粘结硬质合金轧辊的结构特点、技术参数,对复合粘结硬质合金轧辊使用情况进行了分析,总结了在棒材生产线应用所取得的效果,并提出了在使用复合粘结硬质合金轧辊过程车削的方法和提高轧辊使用寿命的措施。     

碱土金属复卤化物的能隙计算及化学键离子性的修正

从Lorents固态电子理论出发,导出一能隙的近似计算公式,表明固体的电子态和晶体结构决定了固体的能隙。对碱土金属复卤化物的能隙进行了计算,结果合理。同时考虑电负性差和原子间距,对传统化学键离子性进行了修正。计算结果和理论分析都表明,修正后的离子性能更合理地表征化合物的化学键性质。     

优质不烧电炉顶砖的试制及使用

以优质高铝矾土熟料为主要原料，加入部分工业氧化铝粉强化基质相，引入适量硅线石和化合物Ｍ，采用高效复合结合剂，试制出了显气孔率１７％，体积密度２．８８ｇ／ｃｍ￣３，荷重软化温度（变形３％）１５６０℃，耐急冷急热性＞３０次的优质不烧电炉顶砖。并浅析了耐剥落性提高的机理。制品经在某厂３０ｔ电炉上使用，平均寿命１４５次，最高达到２１０次。     

金刚石镀膜对金刚石强度以及与胎体结合性能的影响

采用真空镀膜的方法在金刚石表面镀覆金属Ｔｉ，测定了单粒抗压强度和金刚石样品的抗弯强度，用扫描电镜观察了金刚石样品的断口形貌；讨论了金刚石镀膜后对其单粒抗压强度和抗弯强度的影响，与未镀膜比较，金刚石镀膜后能够提高金刚石工具的磨削能力和使用寿命。     

热处理对Al/Fe双金属复合材料结合层中间相生长规律的影响

为了探究轧制前后热处理工艺参数对双金属复合材料结合层中间化合物(interm etallic compounds,以下简称IMC)生长规律的影响,设计正交实验,对25组试样在不同轧前及轧后热处理条件下中间化合物的厚度进行了实测,以此为基础,建立了Fe/A l双金属界面上中间化合物厚度与轧制前后保温温度、保温时间的相关关系模型,结果表明:中间化合物的厚度与轧制前后保温温度、保温时间均有密切关系,轧前热处理对IMC的生成、生长有抑制作用.     

LiF和B2O3在Al-Si-O陶瓷结合剂中的作用

研究了LiF和B₂O₃在Al-Si-O系陶瓷结合剂中的作用.结果表明,恰当的LiF和B₂O₃含量可以使结合剂与磨粒之间有足够大的结合力,但若进一步提高试样强度就必须考虑结合剂自身的强度.在作为cBN的结合剂时,结合剂中含有LiF和B₂O₃,对保护cBN磨粒是有利的.     

合金元素含量对锰钢微观综合性能的影响

研究了锰钢中合金元素碳、锰含量的变化对各种类型结构单元的价电子结构参数和分布几率的影响。提出用两个新的参数——马氏体转变能量因子和键强因子来考察奥氏体稳定性以及马氏体转变量。结果表明，随着这两个因子的增大，马氏体的转变量变小。     

一种化学结合方式新型耐火泥浆的研制与应用

分析了传统耐火泥浆存在的缺陷,介绍了以化学结合剂为结合方式的两种新型耐火泥浆的研制方法。新型泥浆与传统泥浆相比有许多突出的物理化学性能,且具有施工简便、作业性好的特点,已成功用于多种高温炉窑。     

电气石晶体结构中的化学键的计算

对电气石进行XRD及EDS分析测试,并对电气石晶体结构中的化学键进行计算,结果表明:电气石的晶体结构中Mn -O2-键的键长、静电价强度、离子键成分、库仑力、相对键合强度、极性和键价之间具有极好的一致性。     

Common bond and common identity groups on the Internet: Attachment and normative behavior in on-topic and off-topic chats.

The present research is based on D. A. Prentice, D. T. Miller, and J. R. Lightdale's (1994) distinction between common bond groups (formed by attachment between group members) and common identity groups (formed by attachment to the group as a whole). Study 1 showed the existence of both types of groups on the Internet: On-topic chats can be classified as common identity groups, and off-topic chats as common bond groups. In Study 2 the adherence to group norms as a behavioral consequence of the membership in both types of groups was analyzed. Members of common identity groups adhered more to the group norms of paralinguistic symbols than did members of common bond groups. The implications for the development and persistence of groups on the Internet are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The development of the client-therapist bond through the lens of attachment theory.

The bond between client and therapist, a component of the global alliance, is widely believed to play a crucial role in supporting the work of therapy. However, we know little about how the client-therapist bond becomes established and have few theoretical tools to conceptualize its development. Attachment theory, with its focus on the development and dynamics of intimate relationships, is a lens through which we can expand our understanding of the client-therapist bond. I argue that the therapeutic bond may be usefully viewed as an in-progress attachment to therapists. Using Bowlby (1969/1982) and Ainsworth's (Ainsworth et al., 1978) ideas about normative attachment development, I present a phase model of attachment to the therapist and include behavioral, cognitive, emotional, and physiological markers of each phase. I draw empirical support from the psychotherapy process and alliance literatures and discuss research considerations and clinical implications of the model. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

对生产规律变形钢丝的几点建议

介绍了规律变形钢丝的产生，其外形尺寸的作用及其原料选择。指出合理的外形尺寸可提高与混凝土构件的结合力，增加构件的抗疲劳性能；适宜的原料可使产品的机械性能均匀，从而提高了产品质量。     

罩式退火带钢粘结缺陷的产生原因及控制措施

结合唐钢近期生产中发生钢卷粘结的缺陷。对带钢退火时粘结产生的机理和影响钢卷粘结的因素作了详细分析，并提出了相应的控制措施，有效地控制了粘结缺陷的产生。