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.     

对现代性的一种审美反应——谈沈从文小说的思想倾向

沈从文的小说创作属于浪漫主义文学思潮,是他对中国社会从传统向现代转变作出的一种审美反应.他的思想脱出崇奉理性、膜拜西方现代文明的思想主流,属于关注人的感性样态,追求诗意生存的审美现代性思想体系.     

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.     

钢管生产短尺合同与非定尺合同组批优化算法

提出了一套解决钢管生产中短尺合同和非定尺合同组批优化问题的启发式算法.其中短尺合同组批优化算法,实现了客户要求的短尺率尽量降低,短尺合同中定尺部分尽可能长,非定尺部分尽可能短,热区切割长度尽可能长,管坯长度尽量长以及满足的合同数尽量多的目标,从而实现短尺合同的优化组批.非定尺合同组批优化算法则实现了对6～12 m,9～12 m以及其他任意规格非定尺合同提供不同的切割方法,实现尽可能不产生废料,交货长度尽量一致的目标,从而实现对非定尺合同的的优化组批.     

New species of Aeromonas isolated in Cuba

One hundred and fifty-five strains of Aeromonas isolated in the stools of children under 5 years presenting with acute diarrheal disease were studied. Using the Aerokey II system for the identification of species, 47 strains were identified as Aeromonas caviae, 58 as Aeromonas hydrophila, 23 as Aeromonas veronii biovar sobria, 14 as Aeromonas trota, 9 as Aeromonas veronii biovar veronii, 2 as Aeromonas jandaei and 2 as Aeromonas shubertii, Emphasis is placed on the advantages of this method which allowed for the classification of new species not identified previously in our country.     

A possible correlation between the blood leukocyte formula and the use of glucocorticoids as growth promoters in beef cattle

The frequency of lumbar disc hemiation amounts to 5.1% with the male and 3.7% with the female population. Because of the often long-time pain-conditional impairment of the patients as well as the varied therapy-possibilities, the treatment of the ruptured lumbar intervertebral disc represents a special challenge. The indication to the operation for the lumbar disk-herniation results from the malfunctions of the nerve roots, the pains, as well as the temporal course of the symptoms. New and important developments have given the introduction of micro-surgical operation-techniques into the orthopedics. This development has led to it that many orthopedists and neurosurgeons the micro-surgical operation-technique prefers. Important for the micro-surgical lumbar discectomy is the operation-microscope, a good preoperative diagnostics as well as a particular micro-surgical operation-instrument. Through the different enlargement-possibilities of the operation-microscope, all anatomical structures can increase and are done visibly for the surgeon as well as the assistant. Intraoperative injuries of the dura as well as the spinal-nerves are certainly avoided hereby. The micro-surgical discectomie requires no longer time like the conventional operation of the disk. The postoperative stay in the hospital as well as the time of the work-incompetence is reduced. Postoperative inflammations of the disk-area as well as renewed operations are rarer with the microchirurgischen technique. If an operation is necessary, so this should not be out-hesitated too long in order to avoid bed results.     

A different perspective on androgyny: Evaluations of masculine and feminine personality characteristics.

Hypothesized that androgynous Ss would be liked best and perceived as most adjusted (Exp I) and also be perceived to be as instrumental as masculine Ss and as expressive as feminine Ss (Exp II). 179 undergraduates served as Ss in Exp I and 160 undergraduates served in Exp II. Personal Attributes Questionnaires ostensibly filled out by others were the stimuli evaluated. These stimuli were constructed so that the stimulus persons (SPs) were classified as either androgynous, undifferentiated, masculine, or feminine. Male and female Ss evaluated the SPs on dimensions of likeability, adjustment, expressiveness, instrumentality, masculinity, and femininity. Results demonstrate that androgynous persons, regardless of gender, were liked best and perceived as most adjusted, whereas undifferentiated persons were liked least and perceived as least adjusted. Masculine and feminine persons, regardless of gender, were rated midway between androgynous and undifferentiated persons and generally were not evaluated differently on these dimensions. Evaluations of SPs on stereotypically gender-related dimensions revealed that androgynous persons were seen to be as highly instrumental as masculine persons and as highly expressive as feminine persons, but generally less masculine and feminine than sex-typed persons. Implications for self-fulfilling prophecies in social behavior are discussed. (40 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

同步电动机全数字励磁装置改造

文章介绍了同步机励磁控制系统,通过励磁装置改造,能够实现电机启动过程中的转子滑差控制,电机的失步检测和保护,准确灭磁等功能。改造后的励磁控制系统具有可靠性好,控制精度高,现场使用和维护方便等优点。     

翻板机构的设计及其应用

文章介绍翻板在钢管横移中的使用效果,通过翻板运动机构的分析和翻板力学模型的建立,用数学分析的方法通过推导计算给出了翻板各参数的计算公式,并根据实例分析了翻板的优缺点和使用效果.同时对翻板机构的传动形式进行了分析和阐述.     

微细粒贫铁矿石选矿技术攻关及工业实践

针对包钢白云鄂博西矿铁矿石中铁矿物嵌布粒度微细、需细磨至-45μm占85%才能有效解离的性质特点研究开发出了干式预选抛尾-阶段磨矿弱磁选、二段弱磁精上高频细筛(0.075 mm)、筛上产品再磨新工艺,尾矿高效浓缩干排干堆技术、回水净化技术及超长距离精矿矿浆输送技术并成功工业应用,实现了该类型铁矿石资源的高效开发利用。     

浅谈企业自主创新之路

自主创新是相对于技术引进、模仿而言的一种创造活动,是指通过拥有自主知识产权的独特的核心技术以及在此基础上实现新产品的价值的过程.企业自主创新应以深化改革为动力,以技术改造为重点,以技术引进为辅助,以技术发明为后劲,以“讲理想、比贡献”活动为平台,以增强员工素质为根本,达到自主创新之路.