emergency-system pressure
51Christchurch tramway system — A Christchurch Tramway tram, Worcester Street (March 2005) Operation Loca …
52Ice protection system — Ice protection systems are designed to keep atmospheric ice from accumulating on aircraft flight surfaces while in flight. The effects of ice accretion on an aircraft can cause the shape of airfoils and flight control surfaces to change, which… …
53Space Shuttle thermal protection system — The Space Shuttle thermal protection system (TPS) is the barrier that protects the Space Shuttle Orbiter during the searing 1650 °C (3000 °F) heat of atmospheric reentry. A secondary goal is to protect from the heat and cold of space while on… …
54Sympathetic nervous system — A part of the nervous system that serves to accelerate the heart rate, constrict blood vessels, and raise blood pressure. The sympathetic nervous system and the parasympathetic nervous system constitute the autonomic nervous system, the branch of …
55Duke University Health System — Type Private (not for profit) Industry Medical Founded 1998 …
56diluter-demand oxygen system — An aircraft oxygen system that delivers mixed, or diluted with air, oxygen to maintain a constant partial pressure of oxygen as the altitude changes. The system allows 100% oxygen to be supplied in an emergency. See also demand oxygen system …
57Chernobyl disaster — This article is about the 1986 nuclear plant accident in Ukraine. For other uses, see Chernobyl (disambiguation). Chernobyl disaster …
58Decompression (diving) — Divers decompressing in the water at the end of a dive Decompression in the context of diving derives from the reduction in ambient pressure experienced by the diver during the ascent at the end of a dive or hyperbaric exposure and refers to both …
59History of CPR — Cardiopulmonary resuscitation is an important life saving first aid skill, practised throughout the world. It is the only known effective method of keeping someone who has suffered cardiac arrest alive long enough for definitive treatment to be… …
60USS Scorpion (SSN-589) — was a Skipjack class nuclear submarine of the United States Navy, and the sixth ship of the U.S. Navy to carry that name. Scorpion was declared lost on June 5, 1968,cite web |date=2007 |url = http://www.submarinehistory.com/Scorpion.html|title =… …
