活性炭负载纳米零价铁去除溴酸盐的研究

实验采用液相还原法制备活性炭负载纳米零价铁材料(nZVI/AC),并利用X射线衍射(XRD)、扫描电镜(SEM)和透射电镜(TEM)等对其结构进行表征.考察了不同反应条件下nZVI/AC对BrO3-的去除效率,并研究其去除机理.结果表明nZVI/AC具有很高的表面反应活性,且nZVI和活性炭(AC)之间存在协同作用. BrO3-的去除效率随 pH 值的减小而增大, 共存离子NO3-和SO42-对其去除率影响不大但降低了去除速率.机理分析表明BrO3-被nZVI/AC吸附而使局部BrO3-浓度升高,并被nZVI迅速还原为无毒的Br-.     

Morphological control of zinc tricarbohydrazide perchlorate crystals: Theoretical and experimental study

The theoretical crystal-morphology of zinc tricarbohydrazide perchlorate (ZnCP) was studied using the morphology simulation software. The growth trends and surface characteristics were calculated using the Bravais-Friedel-Donnay- Harker (BFDH), Growth Morphology, and Equilibrium Morphology methods; these provide theoretical guidance for the choice of crystal-control reagents. On the basis of the simulations, experiments were carried out to study the effects of five different crystal-control reagents, including carboxymethylcellulose (A), polyacrylamide (B), dextrin (C), Tween 40 (D), and Tween 60 (E), in the control of the crystal-morphology of ZnCP. Mixtures of two reagents and higher temperatures were used to further optimize the ZnCP crystals. The results show that ZnCP crystals are well dispersed, and have a large apparent density and regular crystal-morphology under the control of a mixture of reagents A and E in a mass ratio of 1:4 at 80°C.     

微悬浮体预处理在活性染料冷轧堆染色中的应用

本文介绍了微悬浮体预处理工艺在活性染料冷轧堆染色中的应用.将经过预处理的纯棉织物与传统前处理的纯棉织物在相同染色条件下染色,与采用传统工艺所得染品相比,采用新工艺所得染品有明显的色泽增深效果,经济效益明显.采用新工艺染色可降低生产废水中的废弃染料量,可减轻环境污染,社会效益可观.     

"以人为本"之"人"的科学内涵探析

科学发展观的核心是以人为本。“以人为本”之“人”不是专指或特指一些行业或部门中的某些人或某类人,更不是指那些损公肥私、损人利己谋取不当利益的人,而是指创造历史、推动历史发展的人民群众。厘清并把握“以人为本”之“人”的科学内涵,是准确领会科学发展观的精神实质,是贯彻落实科学发展观的前提条件。     

Proteome changes in the plasma of Papilio xuthus (Lepidoptera: Papilionidae): effect of parasitization by the endoparasitic wasp Pteromalus puparum (Hymenoptera: Pteromalidae)

Although the biochemical dissection of parasitoid-host interactions is becoming well characterized, the molecular knowledge concerning them is minimal. In order to understand the molecular bases of the host immune response to parasitoid attack, we explored the response of Papilio xuthus parasitized by the endoparasitic wasp Pteromalus puparum using proteomic approach. By examining the differential expression of plasma proteins in the parasitized and unparasitized host pupae by two-dimensional (2D) electrophoresis, 16 proteins were found to vary in relation to parasitization compared with unparasitized control samples. All of them were submitted to identification by mass spectrometry coupled with a database search. The modulated proteins were found to fall into the following functional groups: humoral or cellular immunity, detoxification, energy metabolism, and others. This study contributes insights into the molecular mechanism of the relationships between parasitoids and their host insects.     

地域文化视野下保山学院图书馆地方文献建设的思考

保山地区地方文献建设现状与地域文化建设需求间存在一定的差距,严重制约着地域文化的建设和发展。结合云南省"民族文化强省"建设和"桥头堡"战略决策部署带来的重大机遇,从四个方面提出文化建设视野下保山学院图书馆地方文献建设的可持续发展思路。     

局部凸空间中带有约束的向量极值问题的最优性条件

运用序局部凸空间的广义次似凸映射下的择一性定理,得出带有约束的向量极值问题的最优性条件。     

知识经济时代高校休闲体育建设探析

知识经济使人类社会全面进入休闲社会,体育的休闲化和生活化成为一种趋势。高校休闲体育具有生物学、心理学、社会学和哲学等价值。高校可以通过休闲体育宣传、体育教学模式和方法的改进、师资队伍的培育以及体育设施的建设等途径来加快高校休闲体育建设。     

批处理在高校计算机实验室管理中的应用

高校计算机实验室是教学、科研的重要基地,是培养学生创新精神和实践能力的重要实践场所。根据高校计算机实验室管理情况,探讨利用批处理命令对计算机实验室进行维护的方法。用实例的方法介绍了利用批处理文件配置计算机名、IP地址、环境变量等日常管理,使计算机实验室管理更加规范、高效。     

英语专业学生语法能力石化研究及其教学启示

本文以 Larsen-Freeman(2003)的三维语法能力框架为基础,实证调查了英语专业学生语法能力概况,旨在找出他们语法能力是滞存在石化现象,并尝试性的提出了促进语法能力提高的外语教学手段.