Internal medicine. Internal medicine or general medicine (in Commonwealth nations) is the medical specialty dealing with the prevention, diagnosis, and treatment of adult diseases. Physicians specializing in internal medicine are called internists, or physicians (without a modifier) in Commonwealth nations.
The Emergency Alert System (EAS) is a national public warning system that requires broadcasters, cable television systems, wireless cable systems, satellite digital audio radio service (SDARS) providers, and direct broadcast satellite (DBS) providers to provide the communications capability to the President to address the American public during a ...
Seven of these are: 1  Hydrostatic testing, which uses water or another liquid under pressure. 2  Pneumatic or gaseous-fluid testing, which uses air or another gas under pressure. 3  A combination of pneumatic and hydrostatic testing, where low pressure air is first used to detect leaks. Initial service testing, which involves a leakage inspection when the system is first put into operation. Vacuum testing, which uses negative pressure to check for the existence of a leak.