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.
Integrating Factors An integrating factor is any function that is used as a multiplier for another function in order to allow that function to be solved; that is, using an integrating factor allows a non-exact function to be exact. Integrating factors are most often used in first-order differential equations, but may also be used in higher-order equations as well.