The first congestion charge scheme for vehicles in the US has come into effect in New York City. Car drivers will pay up to $9 (£7) a day, with varying rates for other vehicles. "The system has ...
Besides, the negative peak of the surface charge density increases with doping concentration. As the thickness rises to 9 mm, the tangential electric field distribution of the transition zone becomes ...
School of Chemistry and Chemical Engineering, Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing, Jiangsu 211189, P. R. China ...