Dental Clinic Comparison Chart: Capacity and Costs for Fixed Clinics, Mobile Clinics and Clinics Using Portable Equipment. * Fixed locations may include a free-standing facility, community health center, hospital, school or other location.
Diffusion is a process leading to equalization of substance concentrations in a system or establishing in a system an equilibrium concentration distribution that results from random migration of the system's elements. Three types of diffusion are distinguished, viz., molecular, Brownian, and turbulent.
Because of the random nature of the motion of molecules, the rate of diffusion of molecules out of any region in a substance is proportional to the concentration of molecules in that region, and the rate of diffusion into the region is proportional to the concentration of molecules in the surrounding regions.