硅灰混凝土超高强机理的分析探讨

本文在研究硅灰活性的基础上,详细阐述了硅灰混凝土增强机理,指出采用“双掺技术”生产超高强混凝土是现阶段取得良好经济效益的重要途径。     

UV－531的改进合成法

本文对三氯甲苯法合成ＵＶ－５３１（２－羟基－４－正辛氧基二苯甲酮）的路线进行了改进，选用氯代正辛烷做为烷基化试剂，同时使反应在常压下进行，不但大大降低了成本，而且产品的质量好，收率高．     

土壤中亚硝酸根离子含量的测定

采用可见分光光度法测定土壤中亚硝酸根离子的含量。在浸取土壤后的滤液中加入氢氧化铝共沉淀剂，移取定量的二次滤液在酸性条件下与对氨基苯磺酸，α－萘胺显色，其吸光度与亚硝酸根离子的含量成线性关系。采用样品实测值与样品加标因收进行结果对照。回收率达到99．69％－96．86％，在定量测定的允许范围内，故该法具有可行性。     

局部网络操作系统的设计实现

本文对局部网络高层软件进行研究设计,提出了局部网络操作系统(LANOS)的设计思想和设计观点,在单用户、单任务操作系统支持的联网站点上配置了实时通信和开放性文件系统;并以此为核心,编制了网络管理软件和应用程序.使各联网络点通过LANOS作为媒介,能够适合网络环境下的操作,为分布式处理、分布式数据库在局部网络上的实现提供了工具和手段.     

金属孔板波纹填料中孔型对气流径向混合的影响

提出板波填料单盘结构不对称问题，研究了在两种不同孔型的板波填料气流径向混合性能的差异．如果把板波片上圆孔换成桥孔，可以明显地强化填料床径向混合．     

The Ter mutation in the dead end gene causes germ cell loss and testicular germ cell tumours

In mice, the Ter mutation causes primordial germ cell (PGC) loss in all genetic backgrounds. Ter is also a potent modifier of spontaneous testicular germ cell tumour (TGCT) susceptibility in the 129 family of inbred strains, and markedly increases TGCT incidence in 129-Ter/Ter males. In 129-Ter/Ter mice, some of the remaining PGCs transform into undifferentiated pluripotent embryonal carcinoma cells, and after birth differentiate into various cells and tissues that compose TGCTs. Here, we report the positional cloning of Ter, revealing a point mutation that introduces a termination codon in the mouse orthologue (Dnd1) of the zebrafish dead end (dnd) gene. PGC deficiency is corrected both with bacterial artificial chromosomes that contain Dnd1 and with a Dnd1-encoding transgene. Dnd1 is expressed in fetal gonads during the critical period when TGCTs originate. DND1 has an RNA recognition motif and is most similar to the apobec complementation factor, a component of the cytidine to uridine RNA-editing complex. These results suggest that Ter may adversely affect essential aspects of RNA biology during PGC development. DND1 is the first protein known to have an RNA recognition motif directly implicated as a heritable cause of spontaneous tumorigenesis. TGCT development in the 129-Ter mouse strain models paediatric TGCT in humans. This work will have important implications for our understanding of the genetic control of TGCT pathogenesis and PGC biology.     

中小学生认知风格发展差异研究

以团体隐蔽图形（GEFT）为工具,从性别、年龄、环境三个维度探讨中小学生认知风格发展的差异,结果表明在性别和环境上都存在差异,但是在进一步的方差分析中,只有年龄主效应显著.     

新疆假日旅游、假日经济与旅游环境浅析

我国自1999年法定节假日增加后,“五一”和“十一”成为假日旅游的黄金周.据统计,自1999年“十一”黄金周至2003年春节黄金周,11个黄金周国内累计出游人数达6.1亿人次,实现旅游收入2572.8亿元.从新疆旅游市场假日旅游、假日经济与旅游环境三者交汇的视点来浅析旅游开发、经济发展与环境保护的相互关系,以拓宽关注旅游与人类生存环境协调发展的视野,唤起社会潜藏久远、亟待开发的环保觉悟与消费理念.     

酵母发酵的静态营养模型及培养基优化

采用逐步回归方法,建立了以酵母为目的产物的酵母发酵的静态营养数学模型.在模型基础上,用分层序列法对培养基组成及浓度进行优化。验证效果满意。     

Cooperative Mechanism of Supply Chain Under Asymmetric Information

Abstract: The cooperative mechanism is one main issue in the decentralized supply chain system, especially in an asym-metric information structure. We analyze the non-cooperative game behavior of a 2-echelon distribution supply chain,compare the results with the system optimal solution, and give the supplier dominated cooperative mechanisms. We alsoanalyze the validity of our contract under the asymmetric retailers' holding cost information and give some useful conclu-sions.