In physics, a system composed of two substances can be modeled in accordance with classical mixture theory, which considers the fraction corresponding to each constituent and the interactions among constituents. Examples include the coexistence of high- and low-density phases in supercooled water and the coexistence of metal puddles in an insulating matrix in the Mott metal-insulator transition.
Annual NHS flu vaccination program for children is getting underway
The annual NHS flu vaccination program for children aged 2 to 3 years, school age children and children over 6 months with certain health conditions