The limit of high Froude numbers (low external field) is thus notable for such equations and is studied with perturbation theory. Finally in convective form the equations are:    For asymmetric stress tensors, equations in general take the following forms:  Below, we write the main equation in pressure-tau form assuming that the stress tensor is symmetrical (formula_75):      Milton Hospital  Milton Hospital is a hospital located in Milton, Massachusetts, at 199 Reedsdale Road. Founded in 1903, Milton Hospital began operations as a convalescent home. 1903 saw the Cunningham Foundation offering a portion of the Edward Cunningham Estate for future development and expansion of the services offered at that time. Milton Hospital was officially incorporated in 1903 with just nine beds. In 1944, the current site of Milton Hospital was finalized with a purchase of lands from the Pierce Estate. The newly constructed hospital building finally opening its doors in 1950. In 1987, a new patient service wing and main entrance were added. Renovations provided space for several departments, namely; emergency department, ambulatory care unit, diagnostic services department, intensive care/coronary care unit, operating suites and a conference area. Now an affiliate of Beth Israel Deaconess Medical Center (BIDMC), Milton Hospital has produced the following specialized programs:     Nord Noroit  The Nord 1400 Noroit was a French reconnaissance and air-sea rescue flying boat designed and built by Nord Aviation for the French Navy. The Noroit was an amphibian flying boat designed for the French Navy, a cantilever gullwing monoplane with a two-step hull. It had a cantilever horizontal tail surface with three vertical surfaces. It had an enclosed cabin for the seven crew with a large cabin in the rear for use in rescue operations. The aircraft had two engines located one on each wing leading edge. The prototype as a flying boat first flew on 6 January 1949 powered by two Gnome-Rhône 14R radial engines. The second aircraft was fitted with a retractable tailwheel landing gear for amphibious operation which was later retrofitted to the prototype. The next two aircraft first flown in 1949 were designated the Nord 1401 Noroit and were fitted with two Junkers Jumo 213 engines and both were also tested with two Bristol Hercules radial engines. These two aircraft were modified to production standard as the Nord 1402 Noroit and were followed by 21 production aircraft. The last aircraft was delivered to the French Navy in 1956.