Doctors, nurses, technicians and managers at UCLA Medical Center will soon participate in the huge task of moving to a new hospital across the street. The shift to the new Ronald Reagan UCLA Medical Center will require military-style precision: Using 30 ambulances and 80 gurneys, three teams of professionals will transfer 350 patients at the rate of one every two minutes. Further complicating the move is that many of the patients are hooked up to monitors and respirators.