关于高职学院水利工程施工监理专业改革课程设置的研讨

为了贯彻落实高职学院教学改革文件精神,有条不紊地加强建筑工程监理专业建设,结合多年生产、教学实践经验和社会专业调查结果,依照工作过程系统化原理,对工程监理专业课程体系进行了重构,对传统理论课程进行了有效精简,增加实训技能课程;同时也就此方案对学生进行了摸底调查,很受学生欢迎,学生对此寄予了极大的希望.     

Promotion Effect of Lantanum ions on Co／SiO2 Catalysts Prepared via Solvated Metal Atom Impregnation Method

In order to assess the promotional effects of La^3 on CO hydrogenation of Co/SiO2 catalyst, solvated metal atom impregnation (SMAI) method was used to prepare unpromoted 10% (mass fraction) Co/SiO2 and a series of La^3 -promoted 10% (mass fraction) Co/SiO2 catalyst with different La/Co atomic ratios (0.1, 0.3, 0.5). X-ray diffraction (XRD), and CO chemisorption measurements show that the cobalt particle size decreases as the La/Co ratios increase. X-ray photoelectron spectrescopy indicates that cobalt is in zero-valent state for all the samples. Catalytic test shows that the catalytic activity of La^3 -promoted Co/SiO2 in CO hydrogenation is higher than that of unpromoted Co/SiO2, and enhances with the La/Co ratios increase. La^3 promotion also causes the enhanced selectivity of Co/SiO2 catalyst for higher hydrocarbon products.     

浅谈价值工程原理在水利工程中的应用

掌握价值工程原理的基本概念和应用程序及其特点,成功地在水利工程中应用价值工程,取得了满意的效果。     

钕铁硼磁体的有机溶液电镀铝研究

对钕铁硼磁体自AlCl LiAlH4的四氢呋喃－苯溶液中电镀铝进行了研究,结果表明：在电流密度为1－5A／dm^3时得到的镀层最为致密均为;当电流密度为10A／dm^3时,电镀速度可达到72μm/h;镀铝磁体在3．0％氯化钠溶液中的耐腐蚀性能优于电镀镍、锌磁体,经阳极氧化和铬酸盐处理后,性能进一步提高;有机溶液电镀铝方法是钕铁硼磁体有效的防腐蚀手段。