Nonferrous metal (loid) s mediate bacterial diversity in an abandoned mine tailing impoundment

Environmental Science and Pollution Research - Migration and transformation of toxic metal (loid) s in tailing sites inevitably lead to ecological disturbances and serious threats to the...     

Gas/particle partitioning of polycyclic aromatic hydrocarbons in coastal atmosphere of the north Yellow Sea, China

Samples of gas- and particle-phase polycyclic aromatic hydrocarbons (PAHs) were collected at three sampling stations (Xiaomai Island, Laohutan, and Zhangzi Island) in the north Yellow Sea, China during November 2008 and September 2009 to study their atmospheric transport potential and the gas/particle distributions. The composition of PAHs was dominated by gaseous compounds. The percentages of the particle-phase PAHs to the total concentrations were found to be higher during the heating period than the non-heating period. The ratios of naphthalene and acenaphthene to phenanthrene, chrysene and dibenzo(a,h)anthracene showed an increasing trend from Xiaomai Island to Zhangzi Island, which can be called as the local atmospheric distillation of PAHs. Gas/particle partitioning coefficients (K _p) and their relationship with the sub-cooled liquid vapor pressures (pº_L) of PAHs were investigated. The regressions of logK _p versus logpº_L gave significant correlations for all samples of the three sites with r ² values in the range 0.56–0.66 (p?<?0.01). Both Junge–Pankow adsorption model and octanol–air partition coefficient absorption model tended to underestimate the sorption for most PAHs, but the absorption model appeared to be more suitable for predicting the particle fraction of PAHs than the Junge–Pankow model.     

Research on the management models of the rural primary water management from the view of public service: a case study of Zhejiang Province

The rural primary organizations of water management are the important parts of the public service system in the government administration. This paper studies several major management models of the rural primary water management in Zhejiang Province of China. The research result shows that ambiguous functions, lack of funding, and unreasonable personnel structure are the major problems of the rural primary water management. Therefore, it is urgent to improve service system, ensure sufficient funds, and qualify the population personnel of the rural primary organizations of water management.     

Multiple Effects of Energy Issues and Countermeasures: A Case of Shandong Province

Abstract

Energy is now becoming the bottleneck of urban and regional development. The paper takes Shandong Province, one of the most energy consuming provinces in China, as an example, uses quantity methods such as SPSS (Stastics Package for Social Science) cluster sampling and regression analysis, and applies quantity analysis, to analyze the situation of energy issues in Shandong province. The conflicts between the quick industrialization and increasing extensive economic development, between urban population and energy consuming per head, between the infinite energy consuming desire and the low level of managing system, and between the unstable world energy supply and the limited energy storage in China are the main factors of energy crisis in Shandong, which not only results in energy shortage, but also becomes the barrier of economic and social development. In order to ensure sufficient energy supply for Shandong province in the 21st century, we should take countermeasures, such as changing the economic development model, pursuing a multiple and high quality energy strategy, improving the intensive urbanization strategy, and building a scientific energy system.     

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...