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Interior air environment and health problems of vehicles have attracted increasing attention, and benzene homologues (BHs) including benzene, toluene, ethylbenzene, xylenes, and styrene are primary hazardous gases in vehicular cabins. The BHs impact on the health of passengers and drivers in 38 taxis is assessed, and health risk equations of in-car BHs to(More)
Due to the long time in vehicular cabins, people have high exposure to the airborne volatile organic compounds (VOCS), which will lead to negative effects on human health. In order to analyze the influencing factors of in-car VOCS pollution concentrations, 38 taxis were investigated on the static and closed conditions. The interior air of taxis was(More)
Two α-MnO2 crystals with caddice-clew-like and urchin-like morphologies are prepared by the hydrothermal method, and their structure and electrochemical performance are characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), galvanostatic cell cycling, cyclic voltammetry, and electrochemical impedance spectroscopy (EIS). The morphology(More)
In interior air environment of cars, the mass concentrations of volatile organic compounds (VOC) are so high that human health is threatened. Their sources are analyzed and the controlling strategies and technologies are discussed. Reduce interior temperature, enhance vehicle ventilation, control interior materials, clean air-conditioning on time and use(More)
This paper mainly analyzes the core contents of IA, which contain Organization System, Navigation System, Labeling System, and Search System. on the basis of former researches, the article puts forward a set of evaluation system with observation principles of second index for B-C e-commerce website IA, and endows different power to indexes with analytic(More)
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