1 Rarely, fistulas occur externally to the skin or internally to another part of the biliary tree, to the pleural cavity or bronchial tree, or to the hepatic artery or portal vein or other vascular structures.
Load factor (aeronautics) In aeronautics, the load factor is defined as the ratio of the lift of an aircraft to its weight and represents a global measure of the stress (load) to which the structure of the aircraft is subjected: where: Since the load factor is the ratio of two forces, it is dimensionless.
Physics and astronomy. 1  F = maximum or critical force (vertical load on column), 2  E = modulus of elasticity, 3  I = area moment of inertia, 4  L = unsupported length of column, 5  K = column effective length factor, whose value depends on the conditions of end support of the column, as follows.