有机锗的研究现状和发展趋势

主要介绍了有机锗的活性,总结了有机锗的作用及其机理,并对它的应用也做了简要的说明.同时根据它的研究现状对其发展趋势作了分析.     

烦恼 快乐 艺术——池莉“人生三部曲”解读

池莉的"人生三部曲"--<烦恼人生>、<不谈爱情>、<太阳出世>诉尽了普普通通的市民烦恼,小说中主人公被柴米油盐、吃喝拉撒、老婆孩子等琐事所烦着,从而构成他们的"烦恼人生".然而池莉通过自己的艺术创作,以积极的人生态度,又让读者体会到生活本身的快乐,"烦恼人生"中包含着"快乐人生".     

废水处理站自动控制系统的应用

介绍了邯钢冷轧废水站的配套项目废水处理站的自动控制系统,主要从自控设备组成、网络控制系统等方面论述了控制功能的实现,该系统的应用为ERP的数据采集提供了很好的保证,提高了电气控制的集成度和可靠性,简化了控制环节,提高了生产效率.     

杂质对Ti-55.8%Ni SMA低周弯曲疲劳性能的影响

真空感应熔炼时采用高纯氧化物坩埚及石墨坩埚, 保持其他控制参数不变, 得到名义成分为Ti-55.8%Ni的TiNi形状记忆合金铸锭, 经完全相同的加工工艺制备成Φ 1.5 mm的TiNi合金丝材. 用自制试验装置对所得TiNi合金丝材的室温低周弯曲疲劳性能进行评价. 研究发现, 使用氧化物坩埚熔炼所得材料的低周弯曲疲劳性能较使用石墨坩埚得到的材料有显著提高. 杂质成分分析及SEM形貌观察显示合金中第二相夹杂物有所减少, 这是其性能得到改善的主要原因. 采用随机安排对比试验结果的t检验方法可以判断, 氧化物坩埚使用中期所得到TiNi合金的疲劳性能较好. 认为坩埚的连续使用次数过多坩埚材料性能的恶化是造成周期疲劳变坏的主要原因.     

从软件开发项目看管理中的沟通

用任何方法或形式,在两个或两个以上的主体(如人或电脑)传递、交换或分享任何种类的信息的任何过程,就叫做沟通.要完成一个项目,需要具备各种才能和素质的人,由此产生了对组织或团队的需求,因此组织的成员都必须与他人共事.而沟通则是实现"共事"的必要条件.没有沟通就无法传达任务,组员不明确任务就无法工作.沟通要定位清晰,采取恰当的沟通渠道和方式,要以尊重他人为前提进行沟通交流,了解他人的性格个性,多倾听,鼓励,提高交谈技巧,表达要清晰.恰当的、及时主动的沟通能够避免软件项目开发中不必要的失误.     

基于可持续发展的企业组织结构创新研究

21世纪的中国要实现经济的发展,更要实现经济的可持续发展.作为支撑国家经济支柱的企业同样如此.当代企业应该以什么方式发展,才能与可持续发展的命题相一致,这是一个重要的课题.本文从企业可持续发展的内涵着手,分析了我国企业组织实现可持续发展所面临的问题,提出了几点基于组织创新的企业可持续发展的对策.     

电炉电极降耗机理及工艺研究

石墨电极是电炉炼钢和钢包精炼炉的主要加热部件,但电极消耗也是在炼钢过程中所不可避免的消耗材料.电极消耗成本是电弧炉炼钢的主要成本之一.针对近年来电弧炉炼钢居高不下的电极消耗量,相关领域的冶金炼钢专家对此做了深入分析研究,并取得了很好的效果,降低了电极的消耗.然而与国外先进炼钢生产水平的电极消耗相比仍有相当的差距.为此,针对这一现状对电炉电极消耗机理及国内外研究现状做了综合性的分析研究,旨在为电弧炉电极研究专家及工作人员的系统研究做详细的总结陈述,以便于电极的研究与生产.     

赤泥絮凝分离机理的研究进展

合成高分子絮凝剂在赤泥絮凝分离中有重要的应用,首先介绍了稀释矿浆的性质及絮凝剂的作用形式,然后对各种絮凝剂在氧化铝赤泥沉降分离中絮凝机理的研究现状进行了综述,并提出了氧化铝工业用絮凝剂的发展方向.     

浓缩-沉淀法制备铟锡氧化物(ITO)微米棒状粉末的试验研究

文章利用新颖的浓缩析出加煅烧工艺、制备了微米级ITO棒状粉末.借助X射线衍射(XRD)对棒状粉末进行了相结构研究;利用扫描电镜(SEM)对棒状粉末形貌进行了相关的表征;用能量分散谱仪(EDS)以及化学分析方法对粉末的化学成分进行了分析;利用热分析仪(TG-DTA,TG-DTG)对粉末的受热行为进行了相关的表征.结果表明:绝大部分ITO棒的直径位于2～9 μm,而且约95%的棒的长径比大于6;ITO棒中的Sn含量主要富集于表面,而且由棒的表面向核心区逐渐递减,这与Sn的引入方式有关;In(OH)3棒中应该存在含In的硝酸盐或亚硝酸盐;In(OH)3强烈的脱水发生在260～280 ℃,随后在更高的温度下形成ITO固溶体.     

黄金价格和石油价格的联动分析

黄金和石油的价格波动在大多数时候呈正向联动关系,虽然没有严格的数字比例关系,但是其波动趋势往往相同.这主要是因为影响黄金价格和石油价格波动的因素中,有一部分影响因素是相同的,如美元汇率、通货膨胀、主要石油生产国(特别是石油输出国组织)对黄金的运作以及国际上的重大政治事件.当这些相同的影响因素事件发生,特别是对国际市场产生重大影响时,石油价格和黄金价格的走势通常趋向一个方向;但是,出于各种各样的原因,也产生了数次背离.     

Beyond a stereotyped view of older adults' traditional family values.

Structural equation models for predictors of traditional family values regarding relationships were examined in 2 samples: undergraduate students and adults ranging widely in age (23–86 yrs). Predictor variables included verbal ability, need for cognition, need for closure, intolerance for ambiguity, religiosity, and gender orientation. The models accounted for a substantial proportion of the variance in traditional family values (64% for students, 63% for adults). Findings provide little support for common stereotypes regarding age and gender differences in traditionalism. Instead, 3 individual-differences variables predicted traditional family values: need for closure, religiosity, and verbal ability. Outcomes argue for the need to identify multiple mechanisms by which personal characteristics such as need for closure and religiosity influence traditionalism in social belief systems and argue against reliance on status variables such as age and gender as explanatory variables for these beliefs. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Influence of Emotion on Memory for Temporal Information.

Contextual information, such as color and spatial location, has been found to be better remembered for emotional than for neutral items. The current study examined whether the influence of emotion extends to memory for another fundamental feature of episodic memory: temporal information. Results from a list-discrimination paradigm showed that (a) item memory was enhanced for both negative and positive pictures compared with neutral ones and was better for negative than for positive pictures and (b) temporal information was better remembered for negative than for positive and neutral pictures, whereas positive and neutral pictures did not differ from each other. These findings are discussed in relation to the processes involved in memory for temporal information. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Experience of Improving Standards and Methods for Studying the Properties of Metal Powders and Sintered Articles

Reasons are considered for improving standards in the following methods for testing powder materials: tensile, transverse bending, gas and liquid permeability, and determination of powder compact dimensions after compaction pressure removal and during sintering. Calculated data for representative specimen dimensions (cross section and thickness) for these and other test methods for sintered articles (materials) prepared from mono- and polyfraction iron powder of different sizes are confirmed by experiment. It is shown that the representative specimen dimensions prepared from monofraction powder are more than an order of magnitude less than for those prepared from polyfraction powder. The reason for this difference is considered to be the special role of individual particles (for monofraction powder) or assemblies of these particles (for polyfraction powder) in forming elementary fragments within the structure of compacts and sintered articles. Data are provided for the improved ISO 4492-1985 standard and a new GOST 29012-91 standard developed on the basis of it for precise determination of changes in the dimensions of powder compacts during pressing and sintering. Use of this method makes it possible to reveal the existence of different structural states within narrow porosity limits for powder materials. It is shown by experiment that the pulsed ultrasonic method for monitoring these structural states based on measuring the propagation rate and (or) the elastic wave damping factor, exhibits high sensitivity, it is rapid, and it may be recommended for extensive introduction and standardization in powder metallurgy.     

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In order to improve the management level of plate enterprises, ERP, MES and process control system (PCS) were used coordinately for the information management. Stable information exchange was the most important condition for the best using of information management. According to the plate production process, the specific content and trigger time for the data exchange between PCS and MES were designed. Intermediary database was used for date exchange implement. The information data exchange technology developed for the PCS and MES was applied successfully for several domestic plate plant lines. The logistics and information flow for the plate line have been running smoothly. It also can provide a reference for the information construction of similar production lines.     

统计工作在产品等级判定中的作用

论述了本钢冷轧薄板厂在2006年运用统计方法,对质检判定水平作以分析,使之更标准和准确,对减少异议率,提升冷轧产品整体形象以及提高产品实物质量起到了至关重要的作用,通过此项分析的实施和运用,使全体质量检查员能够统一判定认识,真正建立起冷轧质检判定的一套标准程序,有利于产品质量判定总体水平的提高。     

我国凿岩钎具行业的发展

概述和分析了我国凿岩钎具生产的发展和目前国内轻型凿岩机用钎具、液压凿岩钻车用钎具、气动采矿钻车用接杆钎杆以及潜孔凿岩钻具等市场情况。指出凿岩速率快、能量传递性能好、使用周期长、操作方便,将是今后凿岩工程对钎具产品的基本要求。     

Active Earth Pressure on Retaining Wall for c-? Soil Backfill under Seismic Loading Condition

This technical note describes the derivation of an analytical expression for the total active force on the retaining wall for c-? soil backfill considering both the horizontal and vertical seismic coefficients. The results based on this expression are compared with those obtained from earlier analytical expressions for the active force for c-? soil backfill under seismic conditions, and found to have a similar trend of variation. The parametric study shows that the inclination of the critical failure plane with the horizontal plane decreases with the increase in values of seismic coefficients; the decrease being more for their higher values. The total active force increases with the increase in value of horizontal seismic coefficient; while it decreases with the increase in value of vertical seismic coefficient except for a very high value of horizontal seismic coefficient. Design charts are presented for various combinations of horizontal and vertical seismic coefficients (kh and kv), and values of cohesion and angle of shearing resistance for estimating the total active force on the retaining wall for c-? soil backfill for practical applications.     

EAF电极消耗对标指标分析

通过对电极消耗的原因及计算公式进行分析,发现将电极侧面、前端消耗速度指标作为描述电极消耗的对标指标,可使得不同装备下的电极消耗水平具有更好的可比性,可以使电极消耗工艺差距分析更为直接。     

有色上市企业内控制度审计研究

本文结合白银有色集团股份有限公司首发上市要求,通过对公司内部控制的内涵和内部控制审计内容的阐述,论证了完善企业内部控制和开展企业内部控制审计的重要性,指出了目前企业内控制度审计中存在的问题和差距,提出了加强有色上市企业内控制度审计的基本思路和措施,旨在有效提升内审监督的增值服务价值。