视频展台的选购和使用

介绍了视频展台的选购原则和使用注意事项，可供同行参考。     

用示波器显示的电磁振荡演示仪

介绍了阻尼振荡和无阻尼振荡的示波器演示装置的制作方法和使用方法。     

提升企业自主创新能力的竞争情报路径研究

首先界定企业自主创新能力升级,运用定量分析、演化分析和系统分析方法构建了企业自主创新能力升级的竞争情报路径模型,详细地研究了提升我国企业自主创新能力的竞争情报路径,提出了战略并购、合作创新应当是企业核心技术-产品创新能力升级的重要竞争情报行动路径的观点.     

略谈台湾文学其发展趋势

台湾文学是中国现代文学的一部分,是在中国新文学运动的直接影响下产生和发展的。在现代台湾文坛占主导地位的“乡土文学”,有着五四文学的优良传统。“一国两制”的构想为海峡两岸文学合流,开辟了无比广阔的道路。合流是历史的必然。     

关于力的平行四边形定则演示仪的改进

This article introduces an example of ameliorating the demonstrator of force parallelogram formula, and does its facture principles, structures,facture introduction and application also.     

我国低碳经济领域研究现状的文献计量学分析

为推进低碳经济研究深入开展,把握我国低碳经济研究文献现状是很有必要的.运用文献计量学的方法考察1997～2009年间我国低碳经济研究文献,较为系统地分析了我国低碳经济研究主题词及其演变、发文期刊特征、高产作者及引文分布等问题,初步揭示出低碳经济研究的新方向.     

基于专利地图的我国光伏发电产业专利情报研究

通过竞争机构分布、专利相对指数、机构研发团队投入/产出I、PC分类等指标,对中国专利信息中心(CPIC)数据库中光伏发电产业相关专利申请与授权量进行统计分析。结果表明,近年来我国光伏发电专利申请数量增长强劲;我国光伏产业专利优势不在于光伏电池与组件封装环节,这与我国的光伏电池与组件生产大国的地位极为不符;相对于科研机构与大学而言,国内光伏企业人员投入强度较弱。研究旨在为我国光伏发电产业专利战略的规划与产业政策的制定提供参考。     

玄武湖史谭二则

南朝时期 ,玄武湖得到了有效的开发 ,最终从一个无固定堤岸的自然湖泊 ,建成为王公贵族的游苑。而北宋至明初这段历史时期 ,玄武湖又经历了废湖为田 ,还田为湖的沧桑演变。     

Ionic Liquid-Complex Pd/C System as Catalyst for Copolymerization of CO and Styrene简

The copolymerization of CO and styrene catalyzed by Pd/C toward the formation of polyketones(PK)was studied in the N-valeronitrile-N'-methylimidazolium hexafluorophosphate([C4CNmim]+PF-6) medium. The synthesized PK was characterized by Fourier transform infrared(FTIR), elemental analysis, 13C-nuclear magnetic resonance(13C-NMR), differential scanning calorimetry(DSC), thermogravimetric analysis(TGA) and gel permeation chromatography(GPC). The supported ionic liquid film on the surface of Pd/C catalyst can prevent the products from covering the hole of active carbon due to its chemical stability and weak coordination ability with metal ions, and thus efficiently improve the catalytic activity. The effects of different amounts of ionic liquid on the catalytic activity and reusability of the catalyst and the molecular weight of PK were discussed. When the usage of ionic liquid is 10wt%(0.1 g ionic liquid / 1 g active carbon carrier) and the theoretical content of Pd2+ is 5wt%(0.05 g Pd2+/ 1 g active carbon carrier), the highest catalytic activity 2 963.64 gSTCO/(gPd·h) is achieved with the molecular weight and polydispersity index of PK as Mn=9 684, Mw=13 452 and Mw /Mn=1.389.     

Preparation and Investigation of High-Efficiency Antibacterial Liquid Dishwashing Detergent

A high-efficiency liquid dishwashing detergent was prepared by using oregano essential oil as an antibacterial agent. The surface cleaning and antibacterial property of the detergent resolved its unifunctionality problem. The antibacterial activities of the detergent were demonstrated through a disk diffusion assay and wipe experiments with Escherichia coli and Staphylococcus aureus. Results showed that the prepared detergent was highly effective against E. coli and S. aureus. The results of chemical accelerated tests indicated that the detergent would be effective for at least 1 year. The antibacterial property and detergency performance of the high-efficiency antibacterial liquid dishwashing detergent were compared with those of a commercial antibacterial detergent containing 0.02% o-phenylphenol. The detergency performance of the high-efficiency detergent reached 97.8% and was superior to that of the commercial antibacterial detergent.