Rapidly increasing motorization in China, particularly private automobiles, creates both economic and individual benefits, as well as externalities and indirect negative impacts. Such externalities could be adapted and mitigated relatively easily when the rate of motorization growth is low. However, when the number of private automobiles rises by 15 to 20 percent per year and is heavily concent...

stationary sources are reponsible to 96.8 of sox and 70.1 percent of nox in tehran. there are more than 70 thousands factories located in tehran region. economic policy measures such as, charges, subsidies, and non-compliance fees, and also marketable permits, bubble policy, offets, netting and reforms in banking, are recommended. automobiles produce 71.2 percent of total air pollution in tehra...

the effect of automobile pollution was determined on chlorophyll content of four different tree species viz. azadirachta indica l., conocarpus erectus l., guiacum officinale l.and eucalyptus sp. growing along the roads of the city.  significant changes in the level of chlorophyll “a”, chlorophyll “b” and total chlorophyll “a+b” were found in the leaves of four tree species (a. indica, c. erectu...

The increasing use of electronic systems in automobiles instead of mechanical and hydraulic parts brings about advantages by decreasing their weight and cost and providing more safety and comfort. There are many electronic systems in modern automobiles like antilock braking system (ABS) and electronic brakeforce distribution (EBD), electronic stability program (ESP) and adaptive cruise control ...

The problem of energy saving and environment protection has become more and more crucial in China. China's energy development process shows that the development of pure electric vehicle to China's energy structure optimization and the construction of the ecological environment. New promising technology that makes the problem solved is reviewed in this paper, including current status of electric...