国外节水扫描

<正>水是地球生命的源泉。由于世界人口飞速膨胀,地球上的淡水资源日益紧缺。在环境污染严重和淡水资源紧缺的今天,让我们来看看世界其他国家在环保和节水方法上有哪些值得我们学习的好经验。     

防弹陶瓷插板的应用性能研究

本文通过介绍防弹陶瓷插板的组成、使用性能、检测标准,结合陶瓷插板防弹机理,深入浅出的论述了防弹陶瓷插板在个体防护领域的应用。     

"立体互动教学法"在高职"应用写作"教学中的应用

进入新世纪，作为信息载体的应用写作越来越受到社会重视，然而目前高职院校中的应用写作教学现状却与这种重视不相适应。为此，本文试就目前高职教学中如何改革应用写作教学方法的问题，从“应用写作课与相关课程互动”、“写作理论和写作实践互动”、“应用写作文种之间互动”、“促使教学主体进行互动”四个方面提出了看法，以期对高职应用写作教学改革有所裨益。     

Nano-oxides washcoat for enhanced catalytic oxidation activity toward the perovskite-based monolithic catalyst

Environmental Science and Pollution Research - In order to explore a superior washcoat material to give full play to the catalytic activity of perovskite active components on the monolithic...     

Effect of central ventilation and air conditioner system on the concentration and health risk from airborne polycyclic aromatic hydrocarbons

Central ventilation and air conditioner systems are widely utilized nowadays in public places for air exchange and temperature control,which significantly influences the transfer of pollutants between indoors and outdoors.To study the effect of central ventilation and air conditioner systems on the concentration and health risk from airborne pollutants,a spatial and temporal survey was carried out using polycyclic aromatic hydrocarbons (PAHs) as agent pollutants.During the period when the central ventilation system operated without air conditioning (AC-off period),concentrations of 2-4 ring PAHs in the model supermarket were dominated by outdoor levels,due to the good linearity between indoor air and outdoor air (rp>0.769,p<0.05),and the slopes (1.2-4.54) indicated that ventilating like the model supermarket increased the potential health risks from low molecular weight PAHs.During the period when the central ventilation and air conditioner systems were working simultaneously (AC-on period),although the total levels of PAHs were increased,the concentrations and percentage of the particulate PAHs indoors declined significantly.The BaP equivalency (BaPeq) concentration indicated that utilization of air conditioning reduced the health risks from PAHs in the model supermarket.     

Identifying the fouling behavior of forward osmosis membranes exposed to different inorganic components with high ionic strength

Environmental Science and Pollution Research - Functionalized multiwalled carbon nanotube (f-MWCNT) mixed matrix forward osmosis (FO) membranes were fabricated by phase inversion, and the mechanism...     

Adsorption behaviours and transfer simulation of levofloxacin in silty clay

Fluoroquinolone antibiotics in soil can cause serious antibiotic pollution. Adsorption is the main factor that influences their destination and transport of antibiotics. Therefore, research on the behaviour of antibiotics once they reach the soil environment is meaningful to design appropriate measures to reduce their potential risks. This research took levofloxacin (LVFX) as the research object and used a static adsorption experiment to study the adsorption behaviour of the vadose zone of silty clay on the North China Plain. The results showed that LVFX had high retention in silty clay, with an average adsorption ratio of more than 90%. Adsorption of LVFX on silty clay reached equilibrium in 24 h with an adsorption amount of 93.5 mg/kg at an initial LVFX concentration of 10 mg/L. Acidity, cations and soil organic matter could affect the adsorption of LVFX, with adsorption variation ratio of 3.3%, 3.4% and 0.6%, respectively. In addition, numerical simulation with Hydrus-1D was utilized, and the results show that LVFX may infiltrate into underground water through silty clay after 28 days and completely penetrate in 100 days.

     

Review on plant uptake of PFOS and PFOA for environmental cleanup: potential and implications

Environmental Science and Pollution Research - Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) have gained increasing concern due to their persistent characteristics, wide...     

Differentiated emission control strategy based on comprehensive evaluation of multi-media pollution: Case of mercury emission control

In order to comprehensively evaluate the environmental impact of multi-media mercury pollution under differentiated emission control strategies in China, a literature review and case studies were carried out. Increased human exposure to methylmercury was assessed through the dietary intake of residents in areas surrounding a typical coal-fired power plant and a zinc(Zn) smelter, located either on acid soil with paddy growth in southern China, or on alkaline soil with wheat growth in northern Chi...