基于动作分析的公路作业服装功能设计

本文基于人体工效学原理,对公路作业十个基本动作进行实验来测量不同作业状态下人体体型变化参数从而确定成衣尺寸。在此基础上进行结构与款式设计,开发了标准型、防护加强型、功能加强型三种公路作业服,有针对性地提高服装的防护和缓解疲劳功能,最大程度的实现其功能与舒适性。     

基于工作过程的高职环境实验课程教学方法研究

中国环境管理干部学院在多年环境实验教学经验的基础上,对原有实验教学模式进行改革,提出了“基于工作过程”的环境实验课程的全新教学模式。传统实验教学内容和教学方法单一,学生被动学习,不适用于新的教学模式下高职学生的培养需要。基于工作过程的高职环境实验课程教学方法以工作任务为导向,学生在实践中学习,学习中实践,教学效果良好。介绍了基于工作过程的教学方法体系确定的原则和程序,并以基于工作过程的环境实验课程为例,介绍了本课程的多模式教学方法体系及其应用。     

Forecasting of municipal solid waste generation in China based on an optimized grey multiple regression model

Journal of Material Cycles and Waste Management - The massive generation of municipal solid waste (MSW) has become an essential social problem that not only damages the ecological environment but...     

Investigation of migration rule of rainwater for sponge city roads under different rainfall intensities

Environmental Geochemistry and Health - Urban development and climate change have led to severe waterlogging in cities. To study the degree of mitigation of urban waterlogging using the design of...     

The boosting of microwave roasting technology on the desulfurization of phosphate rock

Environmental Science and Pollution Research - A green and-easy to operate method, the microwave technology, was developed to promote the desulfurization process of phosphate rock, systematically...     

Inter-annual and intra-annual variations in water quality and its response to water-level fluctuations in a river-connected lake,Dongting Lake,China

Environmental Science and Pollution Research - The hydrological conditions of river-connected lakes are complex primarily owing to their considerable water-level fluctuations (WLFs). Water quality...     

滇池流域水资源的开发与保护

本文介绍了滇池流域的自然条件和社会经济发展,分析了水资源特点,对其开发现状和供需预测作了评述,并提出了进一步开发和保护水资源的建议。     

Biosorption effects of copper ions on Candida utilis under negative pressure cavitation

Under the optimal condition of copper ions adsorption on yeast,we found some different effects among static adsorption, shaking adsorption and negative pressure cavitation adsorption, and the methods of yeast with different pretreatments also affect adsorption of copper ions. At the same time, the change of intercellular pH before and after adsorption of copper with BCECF was studied. The copper distribution was located by using PhenGreen （dipotassium salt and diacetate）, and the surface of yeast was observed by an atomic force microscope. The results showed that negative pressure cavitation can improve bioadsorption capacity of copper ions on yeast. However, the yeasts＇ pretreatment has a higher effect on bioadsorption. It indicates that heavy metal bioadsorption on yeast has much relation with its cellular molecule basis. With the adsorping, the intercellular pH of yeast increased gradually and changed from acidity to alkalescence. These results may suggest that negative pressure cavitation can compel heavy metals to transfer from the cell surface into inside cell and make the surface of yeast coarse.     

Evaluation of accelerated dechlorination of p,p'-DDT in acidic paddy soil

The reductive dechlorination and behavior of p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT) was investigated in a paddy soil. Treatment with 5% (w/w) metallic iron (Fe(0)) resulted in sharp decrease of p,p'-DDT, whereas there was no extra effect when 2% (w/w) aluminum sulfate (Al(2)(SO(4))(3)) was added to the Fe(0) treatment. These results suggest that Fe(0) could effectively promote the reductive dechlorination of p,p'-DDT and its metabolites while Al(2)(SO(4))(3) did not show any effect on those processes. Furthermore, p,p'-DDT and its daughter compounds inhibited holistic soil respiration greatly at first but could be metabolized by certain species of indigenous microorganisms after a period of adaptation time in the soil. When treated with Fe(0), the polluted soil produced much less CO(2) while the addition of Al(2)(SO(4))(3) counteracted its negative effect to much extent.