稀土变质处理对中锰白口铸铁组织和性能的影响

本文研究了稀土变质处理对中锰白口铸铁的碳化物、残留奥氏体、基体组织、夹杂物以及性能影响,从而获得了中锰白口铸铁的最佳稀土变质量,为生产强韧中锰白口铸铁提供了必要的工艺参数。     

热处理对Cr20高铬铸铁组织和性能的影响

高铬白口铸铁在磨料磨损应用中具有极大的优越性。本文研究了不同热处理状态下高铬白口铸铁的性能、组织及二次硫化物的形成过程，并确定了组织与性能的相关性，对热处理工艺的选择进行了分析与讨论，为实际生产中热处理规程的制定提供了依据。     

稀土在白口铸铁中应用的现状及前景

本文综述了国内外稀土在白口铸铁领域研究和应用情况，稀土能有效地改善白口铸铁组织与性能，白口铸铁是稀土在铸铁中应用的重要领域之一，有广阔的应用前景。稀土最佳的加入量、处理工艺、稀土对白口铸铁作用机理方面，都进行了不少工作，但还有不少问题有待于投入更大的力量进行更深入的研究。     

合金铸铁光谱分析用标准物质的研制

采用自行设计的金属型模具、独特的浇铸补缩排气系统、特殊的熔炼工艺以及有效的强制水冷措施等先进的铸造工艺,成功地研制出了合金铸铁光谱分析用标准物质。经国内7家具有丰富的标准物质分析经验单位用规定的分析方法进行了协作分析,表明该标准物质的均匀性、成线性、分析精度等均达到了国际同类标准物质的先进水平。经抽样解剖并观察其金相组织表明,该标准物质组织致密、白口化程度良好。该标准物质适用于各种合金铸铁的生产检验。     

锻造白口铸铁的强韧化机理

：借助扫描电镜、透射电镜观察和分析了白口铸铁的微观组织。揭示了白口铸铁锻造强韧化的机理，从而为提高白口铸铁的强韧性提供了理论依据     

稀土镁球墨铸铁光谱分析用标准物质的研制

采用分层隔离式结构的金属型模具、阶梯式的浇注补缩排气系统、合适的熔炼工艺以及有效的强制水冷措施等先进的铸造工艺,研制出了一套稀土镁球墨铸铁光谱分析用标准物质。经国内8家具有丰富的标准物质分析经验的单位用规定的分析方法进行了协作分析,表明该标准物质均匀性、成线性、分析精度等均达到了同类标准物质水平。经抽样解剖并观察其金相组织表明,该标准物质组织致密、白口化程度良好。应用表明,该标准物质适用于普通铸铁、球墨铸铁等生产分析检验。     

常规两段浸出法提高锌焙烧矿中铜回收率的研究

分析了不同湿法炼锌工艺锌焙烧矿中回收铜的工艺,发现各工艺都存在不同的工艺缺点。借鉴国内锌冶炼企业开展的常规两段浸出法提高铜回收率的生产经验,进行了锌焙烧矿中铜、铁、硅的浸出机理研究,并且根据该机理提出了常规两段浸出法的改进工艺流程,按照该工艺流程开展了试验研究,将铜的回收率提高到了76.41%。     

铝合金挤压制品粗晶环形成机理研究

通过大量生产实验获得了生产无粗晶环的LY12合金挤压棒的工艺方案和最佳参数.在此基础上,采用金相显微镜观察和电子显微分析技术等手段,从金属再结晶的观点出发,系统地研究了该合金正向热挤压棒材粗晶环形成的机理.     

钨合金白口铸铁共晶碳化物团球化的研究

针对钨合金白口铸铁脆性大,应用于承受冲击载荷的工况下安全性差,使用范围受到严格限制,探讨了碱金属元素钾、钠对钨合金白口铸铁组织和性能的影响。结果表明:钨合金白口铸铁经钾、钠处理后,共晶碳化物由网状分布变为团块状甚至团球状分布,碳化物明显细化,分布均匀性增大,分析了共晶碳化物团球化的机理。碳化物形态的改善,导致钨合金白口铸铁的冲击韧性和抗冲击磨损能力明显提高。     

真空自耗电弧炉电极杆焊接裂纹控制技术研究

分析了真空自耗电弧炉铜-不锈钢异种金属套管式电极杆焊接裂纹产生的机理.研究出了提高焊缝金属抗裂性能及降低焊接过程结构内应力的工艺方法--焊后捶击焊逢并浇水快速冷却.生产中采用该工艺措施后,有效地防止了焊接裂纹的产生,值得在类似结构焊接中加以推广应用.     

就矿找矿理论浅析

在老矿山深部及外围开展就矿找矿，是解决危机矿山资源、增加地质储量的重要途径。阐述了就矿找矿工作的性质和特点，指出了成矿系列理论、成矿系统理论、矿床模型理论、丛聚理论、构造等距分布理论、带状分布理论、侧伏理论等是指导就矿找矿的重要理论基础，并举例对就矿找矿理论的应用进行了分析。     

Expression of brain-derived neurotrophic factor and its cognate receptor, TrkB, in the rat suprachiasmatic nucleus

Brainerd and Reyna (1998, this issue) have described fuzzy-trace theory as a basic-processing theory, emphasizing age differences in children's disposition to use verbatim versus gist representations. The theoretical climate of the 1980's, when fuzzy-trace theory was first formulated, is described. Fuzzy-trace theory integrated new ideas about how cognitive development was viewed into a coherent framework, which only gradually gained acceptance as critical aspects of the theory were confirmed, counterintuitive findings were predicted and demonstrated, and other researchers began applying the theory. Fuzzy-trace theory converges with other contemporary theoretical accounts in raising the general issue of the relation between two developing representational systems and is consistent with the idea that immature (a bias toward verbatim encoding) and mature (a bias toward gist encoding) have both advantages and disadvantages at different times in development. By integrating the theory with ideas from social-contextual perspectives, the theory may have a greater impact in the future for issues of social significance.     

变形金属位错链长度统计分布理论及应用——Ⅰ.理论发展

变形金属位错链长度统计分布理论是现代金属塑性变形定量微观理论最活跃课题之一。该研究的开展将会在钢铁等金属材料的微观结构与宏观力学性能之间建立一座桥梁,揭示其内在联系和演变规律,给出符合实际情况的定量结论。本文分理论和实验两部分系统介绍了它的发展、研究特色、方法及最近结果。对目前存在问题及值得探讨的方向也作了初步评述。     

简述奥斯汀与塞尔的言语行为理论

人们对于语言本质的讨论从来没有停止过，言语行为理论的提出就是其中一项重大的突破。文章介绍了奥斯汀与塞尔的言语行为理论，系统地阐述了奥斯汀言语行为理论的内涵与价值以及塞尔对奥斯汀理论的完善与发展，最后总结了言语行为理论对语言学研究的重要意义。     

Measuring needs with the Thematic Apperception Test: A psychometric study.

Three apperception theories that explain how people respond to Thematic Apperception Test cards are proposed: a simple apperception theory, an apperception theory with a dynamic component, and an apperception theory with 2 types of responses. Each theory is translated into an item response theory model and is applied to need for achievement (nAch) data. The analysis indicates that the best fitting model is provided by the apperception theory with 2 types of responses, also referred to as the drop-out apperception theory. The 1st type of response predicted by this theory is determined by the nAch level of the person and the achievement-response-eliciting value of the card; this response is diagnostic for the nAch level of the person. The 2nd type of response is not determined by the 2 aforementioned characteristics and is therefore not diagnostic of the person's nAch level. The results are cross-validated for need for power and need for affiliation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A perspective on the history of process and outcome research in counseling psychology.

Traces the development of process and outcome research from before the foundation of counseling psychology in 1946 to the present time. First, theoretical contributions are focused on, with particular attention to the influence of C. Rogers's theory, behavior theory, psychoanalytic theory, systems theory, interpersonal theory, and social influence theory. Next, H. J. Eysenck's challenge to the efficacy of psychotherapy; the uniformity myth that process and outcome are similar across diverse clients, therapists, and contexts; and changes in research methods over the years are covered. The article concludes with recommendations for future research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

College students' theory of note-taking derived from their perceptions of note-taking.

In this ethnographic interview study, college students' theory of note-taking emerged after 4 phases. The theory was confirmed in a 5th interview phase. The students' theory includes conclusions consistent with ones already in the note-taking literature, but also many insights into note-taking dynamics that have not been identified in previous research. The amalgamation of previous note-taking theory and empirical outcomes with the students' theory provides a more complete theory of self-regulated note-taking than existed previously. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A Generalized Continuum Theory and Its Relation to Micromorphic Theory

Classic continuum mechanics views a crystal as a homogeneous and continuous medium, in which the basic structural unit of the crystal is taken without structure and is idealized as point mass. Micromorphic theory views a material as a continuous collection of deformable point particles; each particle has finite size and additional nine internal degrees of freedom describing the stretches and rotations of the particle. This paper presents a multiscale field theory that views a crystalline material as a continuous collection of lattice points, while embedded within each point is a group of discrete atoms. The atomistic formulation of the field theory is briefly introduced. Its relation with the well-known micromorphic theory is derived. The applicability of the classical continuum theory, micromorphic theory, and the generalized continuum field theory is discussed.