Versatile transamination in quinonediimine chemistry: Towards a novel class of water soluble UV/violet chromophores

The transamination reaction of 2,5-diaminobenzoquinonediimine (QDI) with ethylenediamine gave fluorescent 1,2,3,4-tetrahydropyrazino[2,3-g]quinoxaline (1). When the same reaction was carried out with N,N’-bis(aminoethyl)-1,3-propanediamine, a novel cationic quinoxalinium species (2) was isolated, which can be further condensed with p-cyanobenzaldehyde to afford a benzimidazolo-fused quinoxaline dye (3) that is a water-soluble fluorophore in the UV–visible range.     

Nanocomposites based on cationic polyelectrolytes and silver nanoparticles: Synthesis,characterization, molybdate retention and antimicrobial activity

The objective of this work was to synthesize nanocomposites based on cationic polyelectrolytes and silver nanoparticles using poly(N-vinylbenzyl-N-triethylammonium chloride) as polymer phase. For that, a nanostructured crosslinker was synthesized from silver nanoparticles (AgNPs) and acrylic acid. Molybdate retention properties of nanocomposites were studied in function of pH and ionic strength. In addition, their antimicrobial properties were evaluated against E. coli and S. aureus. It was evidenced that AgNPs can be stabilized using acrylic acid and that this material can be incorporated to the polymer phase during polymerization by free radical of cationic monomers. The effect of pH on retention of molybdate, by the nanostructured polymer, was significant only to low ionic strength (the order seen was pH 5.0 > pH 7.0 > pH 9.0 for 0.0% NaCl). Results suggest that the main interaction influencing the molybdate retention is electrostatic in nature. Finally, antimicrobial activity was enhanced by incorporation of polymerizable nanostructured crosslinker based on AgNPs.     

基于SiteServer CMS的高职院校门户网站的设计与实现

SiteServer CMS是国内一款很成熟的应用型软件,主要用来实现网站制作和内容管理,SiteServer CMS采用基于微软ASP.net平台的开发设计,兼容SQL Server,Oracle等众多数据库,数据负载能力非常强。校园门户网站是高职院校展现自己风貌和交流讯息的重要平台,借助CMS系统来完成门户网站的开发不仅可以简化网站的建设过程还能更简易地实现后期的维护。     

跨文化联合大学校园培养复合人才的运行机制探讨

高校作为学习共同体,通过跨文化联合大学校园等多种联合培养方式,形成体系开放、机制灵活、渠道互通的人才培养模式可有效实现复合型人才的培养。联合大学校园运行机制的核心是建设多圈层、双向互动的联合培养大学群,包括“一校式”的办学模式、“一体化”的课程体系和“一站式”的服务管理。西南科技大学深入探索了跨文化联合大学校园人才培养的运行机制,充分发挥优势学科资源互补、学科交叉的作用,强化素质培养资源平台建设,探索复合型人才培养的多种模式,已初显成效。     

高校计算机机房ARP病毒防范策略

本文介绍了ARP协议的概念、基本原理及ARP病毒的欺骗原理和欺骗种类。最后提出高校计算机机房ARP病毒的防范和解决措施．给出了实际解决方案。     

论高校校报在校园文化建设中的舆论导向作用

高校校报是学校党委和行政的机关报,担负着校园舆论引导和文化建设的重要使命.校报要坚持党性原则,充分发挥自身独特的优势,坚持正确的舆论导向,通过树典型、抓热点、变形式、优化副刊等途径,弘扬时代主旋律,引导校园时尚文化,传播校园精神,努力建设积极健康的校园文化.     

论大课间活动与校园体育文化的融合

大课闻活动是校固体育文化的一扇窗,怎样利用大课间活动这一载体,体现、丰富校园体育文化是一个值得研究的课题.本文结合我校大课问活动的开展现状,阐述如何通过大课间活动来营造良好的校园体育文化氛围,以期与同行共勉.     

校园规划之景观生态观初探

运用景观生态学斑块-廊道-基质原理进行校园规划设计,基于景观生态学原理提出校园生态景观的规划设计理念。强调校园规划中功能、景观、生态的和谐统一,指导生态校园规划。     

浅析高职院校图书馆与校园文化建设

本文阐述了高职学院校园文化的形成,以及图书馆如何在校园文化建设中发挥其作用,推动校园文化建设的发展。     

基于SNMP的校园网拓扑发现系统的设计与实现

网络拓扑信息的发现是校园网络管理软件中非常重要的功能。论文文基于SNMP协议,设计了一个校园网拓扑发现系统,提出了系统的总体架构和功能模块,研究了网络层拓扑发现技术和链路层拓扑发现技术,实现了网络层拓扑发现功能和链路层拓扑发现功能,并给出了系统的实际运行效果。