Generating Inbred Mice. Inbred Strains. A strain is defined as inbred when it has been mated brother x sister for 20 or more consecutive generations (F20). All offspring can be traced back to a single ancestral breeding pair in the 20th or subsequent generation.
suction head. The energy per unit weight of fluid on the suction side of a pump. 1  Facebook.
Refers to the height of a column of water that can be supported by the pressure or vacuum exerted at the pump. Static Suction Head. The vertical distance between the pump impeller and the surface of the liquid on the suction side of the pump. Dynamic Suction Head. The static suction head plus the additional suction head created by friction from the liquid flowing through the hoses, fittings, etc. Atmospheric pressure enables pumps to lift water.