废水中甲酸萃取回收的研究

以ＺＹＭ混合溶剂为萃取剂，以含４．５％的甲酸的废水进行萃取试验，结果表明，ＺＹＭ具有良好的热稳定性和再生性，对废水中的甲酸有较高的萃取率。采用本萃取技术，不但具有显著的环境效益，而且还可回收甲酸，获得较好的经济效益。     

Using digital image projections to visualize forest landscape changes due to management activities and forest growth

A pedagogic problem in forestry and landscape management is to visualize future landscape effects of forest growth and current management activities in the forest. This paper presents a method for forecasting digital image projections of forest landscape dynamics. Static nonlinear regression functions estimate the digital numbers in a Landsat Thematic Mapper image. Regressors used are forest stand variables. By estimating the future forest stand data, based on intermediate treatment and growth, future satellite digital images are created. In a case study example, the future landscape of a forest block in the province of Västernorrland, Sweden, is projected to demonstrate the application of this visualization technique.     

淮河上游洪水灾害可公度信息系预测

可公度信息系是一种源于天文学的预测方法，其实质是寻求事物发生的经验关系。本文应用此法对淮河上游的洪水灾害进行了预测分析，结果表明淮河上游洪水灾害发生具有２ａ、４ａ、５ａ、７ａ、９ａ、１１ａ、１９ａ及７１ａ等多种周期，并在１９９７年、２０００年等年份的前后有可能发生大洪水。     

金属矿山安全管理与信息化技术

信息化技术与传统产业的紧密结合,可实现传统产业快速发展.信息化技术对矿山安全也发挥了重要的作用.详细论述了金属非金属矿山的安全生产现状,矿山安全灾害种类和矿山安全信息化技术,指出信息化技术的应用是解决矿山安全问题的一个重要途径.     

分子印迹技术在环境科学领域中的应用

分子印迹技术（MIT）是一门新兴的边缘科学技术，它的产生与发展为环境科学打开了又一视角。介绍了MIT的产生与发展及基本原理，综述了MIT在环境科学领域中的应用，主要包括MIT在固相萃取、膜分离、色谱分析、传感器及分子印迹聚合物作为催化剂在环境修复中的应用。     

Comparison of Soil Extraction Isotherms of Soil Samples Saturated With Nonpolar Liquids

In multiphase systems capillary pressures play a significant role on fluid movement and retention. The facility to predict the effect of different thermal remediation strategies requires the knowledge of the effect of temperature on capillary pressure-saturation relationships in the soils. The objective of recent study was (a) to develop a technique for routinely measuring the pressure-saturation curves of soil samples saturated with a nonpolar liquid at different regulated temperatures (b) to build a database using the measured pressure-saturation curves and the physical, chemical properties of the model soils (c) to establish the dependence of nonaqueous phase liquid retention on the soil properties and the temperature. The retention curves (extraction isotherms) with nonaqueous phase liquid were determined using a modified pressure plate extractor. The wetting phase was a non-aromatic hydrocarbon distillation product. Pressure plates were designed and constructed in the laboratory of our department. The temperature was held constant at 20, 40 and 60 ^∘C. Statistical analysis was performed involving selected soil parameters and the measured nonaqueous phase liquid retention data. The results show that knowing some easily measurable soil parameters (bulk density, particle size distribution, humus and lime content) we can estimate the nonaqueous phase liquid retention of the soils. The measured “extraction isotherms” provide essential information about the temperature-dependency of pressure-saturation curves.     

加强环境信息工作的对策探讨

根据环境信息工作直接、及时、针对性强等特点和发展趋势，有的放矢地提出了强化意识，提高信息质量，深入调研，进一步加强环境信息工作的对策。     

"双主模式"在课程整合中的应用

信息技术与课程整合的实施是强调在各学科的教学过程中积极运用信息技术.大部分学校的实践过程中还是普遍存在着这样那样的误区.将“双主模式“教学设计理论作为信息技术与课程整合的指导思想,体现学生的主体性,发挥教师的主导作用.     

信息时代的数字图书馆

数字图书馆是将文字、图像、声音等信息数字化,通过国际互联网传输,做到信息资源全球共享.数字图书馆拥有丰富的多种媒体数字化信息资源,是没有时空限制的超大规模知识中心.     

构建建筑行业环境会计信息的思考

环境会计的研究落脚到建筑行业中,有利于在研究中加强环境科学与会计理论的结合,充分利用环境学中的技术方法,探索环境成本的核算方法,为建筑行业的发展提供一个有效管理工具,同时也为环境会计的建立寻找突破口做出创新创造条件.