vital factors
1.Based on comparison among worldwide government websites,25 main factors that influence performance optimization of government website are put forward. By using the method of DEMATEL,it is concluded that the 6 vital factors are:online reference,website maintenance,information service,open purchase,open finance and information integration. Some measures and suggestion are advanced according to these factors.
3.Proceeding from a cardinal reason affecting wettability reversal of rocks-the absorption of asphaltenes of oil in the pore surface of rocks, the effects of injection water salinity and cation type on this absorption are separately researched; thus the vital factors affecting wettability reversal of rocks are derived.
7.Results After individual physiology factors and indoor air pollution were balanced, the abnormal incidence of vital capacity(VC), forced vital capacity(FVC), forced expiratory volume(FEV) of pupils in industrial area and the incidence of FEV of pupils in sowntown and the incidence of FCV, FEV of pupils in traffic area were significantly higher than that of pupils in clean area(P<0.05).

