基础化学实验教学的思考

本文按化学实验教学程序讨论了化学实验教学中三个阶段的理论思维     

高师学生化学实验调查及对策

通过对台州师专生化专业学生的化学实验状况调查,了解中学化学和高师无机化学实验现状,对高师无机化学实验如何加强与中学化学实验的联系,提高学生实验素质,提出一些改进对策。     

Teaching Modern Chemistry through ‘Recurrent Historical Teaching Models’

Today there are little more of 3 million chemist all over the world producing about 800,000 papers a year. They produce new substances – from some hundreds in 1800 to about 20 million now – the vast majority artificial. This rate is growing quite fast. Once the majority of chemistry teachers all over the world used textbooks as the main (sometimes the only) source of information, we became, without wanting to... history teachers! If ‘scientific literacy’ is the aim of science lessons in school, it is much more than the literacy now developed in science classrooms. It must include an understanding of the nature and process by which scientific activities are carried out. Recognition of the exponentially chemistry knowledge growth and the incompleteness of the current chemistry textbooks are thus intimately related to recognition of the need for recurrent historical teaching models.     

云南主产区气候热环境与优质冬春香料烟生产关系的探讨

2001年/2002年在云南冬春香料烟主产区保山的罗明片和柯街片进行密度种植试验和气候考察.揭示出本区冬春香料烟生产季最高最低气温、平均气温和土温时空变化特点及差异气候特征;其中,冬季温度变化关键期(12月/1月)大部时段土温旬均值高于气温O.5℃～3.0℃,最低气温极值为3.0℃～3.4℃,随时空而异.研究表明,密度对烟叶产量和质量的影响以及株高迅速生长的天数随气候类型的不同而异;冬季热量水平低是生产优质冬春香料烟的制约因素;影响冬春香料烟生长发育和烟叶品质的温度因素因地域而异;光温差积影响烟叶总糖含量,10 cm土温影响烟叶烟碱含量;适宜种植密度行株距为40cm×12cm,单株风干烟茎重达28.44g～31.33g/株、风干烟叶重达82.99g～91.41g/株、产量为1 729.1kg～1 903.8kg/hn2.此外,建立了株高-温度关系模型,模型通式:y'=c0 n∑i=1ci·xi.在此基础上,提出在主产区实现优质香料烟生产的对策建议.     

化学实验的绿色化和环境保护

阐述了绿色化学、化学实验绿色化的概念。绿色化学与环境保护的关系;化学实验绿色化是实验教学发展的趋势,简述了绿色化学实验的内容。     

刍议农业可持续植保与有害生物的综合治理

本文在介绍可持续植物保护概念的基础上，分析了可持续植保中有害生物综合治理在我国的发展以及存在的问题，提出了实现有害生物综合治理的措施和方法，同时特别强调加强生物农药及其它非化学防治方法的推广和利用，减少化学农药的使用，减轻生态环境的压力。     

Why do firms acquire technology?: The example of DSM's ammonia plants, 1925-1970

This article analyses markets for technology from a buyer's perspective: the question why firms acquire technology is the central research question. An in-depth historical case study of a chemical company is confronted with systematic and economic research. The acquisition of complete plants by the particular firm under study is explained and several factors are proposed which may help further research on markets for technology.     

搞好实验教学 注重学生能力和素质的培养

搞好实验教学课教学，应注重学生能力和素质的培养。要做好实验课教学工作，首先应重视实验课教学，并在此基础上切实抓好实验课教学，在教学时注意对学生能力的培养，使实验对提高学生的综合素质发挥重要的作用。     

《化工传递过程原理》课程教学探索

为了更好地服务于“卓越工程师培养计划”等人才强国战略,学校注重培养学生的创新能力与专业实践技能。作为一门理论性较强的课程,如何合理安排教学内容,改革教学方法,适应专业人才培养新形势,是本课程教学的核心问题。文章结合《化工传递过程原理》课程特点和本校人才培养状况,浅谈一些教学体会。     

A pilot scale trickling filter with pebble gravel as media and its performance to remove chemical oxygen demand from synthetic brewery wastewater

Evaluating the performance of a biotrickling filter for the treatment of wastewaters produced by a company manufacturing beer was the aim of this study. A pilot scale trickling filter filled with gravel was used as the experimental biofilter. Pilot scale plant experiments were made to evaluate the performance of the trickling filter aerobic and anaerobic biofilm systems for removal of chemical oxygen demand (COD) and nutrients from synthetic brewery wastewater. Performance evaluation data of the trickling filter were generated under different experimental conditions. The trickling filter had an average efficiency of (86.81±6.95)% as the hydraulic loading rate increased from 4.0 to 6.4 m³/(m²·d). Various COD concentrations were used to adjust organic loading rates from 1.5 to 4.5 kg COD/(m³·d). An average COD removal efficiency of (85.10±6.40)% was achieved in all wastewater concentrations at a hydraulic loading of 6.4 m³/(m²·d). The results lead to a design organic load of 1.5 kg COD/(m³·d) to reach an effluent COD in the range of 50–120 mg/L. As can be concluded from the results of this study, organic substances in brewery wastewater can be handled in a cost-effective and environmentally friendly manner using the gravel-filled trickling filter.