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As with many words derived with the "æ" ligature, simplification to either "ae" or just "e" is common, especially in North America.In the US, the majority of college, university, and residency programmes, and even the American Academy of Orthopaedic Surgeons, still use the spelling with the digraph ae, though hospitals usually use the shortened form.
Julius Edgar Lilienfeld proposed the concept of a field-effect transistor in 1925.. The thermionic triode, a vacuum tube invented in 1907, enabled amplified radio technology and long-distance telephony.
Portals complement main topics in Wikipedia, and expand upon topics by introducing the reader to key articles, images, and categories that further describe the subject and its related topics. Portals also assist in helping editors to find related projects and things they can do to improve Wikipedia, and provide a unique way to navigate ...
Hypertension, also known as high blood pressure, is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. [11] High blood pressure usually does not cause symptoms itself. [1]
Rheem Manufacturing Company is an American privately held manufacturer that produces residential and commercial water heaters and boilers, as well as heating, ventilating and air conditioning (HVAC) equipment.
In thermodynamics, the Gibbs free energy (or Gibbs energy as the recommended name; symbol ) is a thermodynamic potential that can be used to calculate the maximum amount of work, other than pressure-volume work, that may be performed by a thermodynamically closed system at constant temperature and pressure.
The first generation of the Supra was based largely upon the Toyota Celica liftback, but was longer by 129.5 mm (5.10 in).The doors and rear section were shared with the Celica but the front panels were elongated to accommodate the Inline-6 instead of the Celica's 4-cylinder engine.
One site, the Laurisilva, is located in the island of Madeira and is Portugal's only natural site; the other sites are cultural. Two sites are located in the Azores archipelago. The Prehistoric Rock Art Sites in the Côa Valley and Siega Verde is shared with Spain, making it Portugal's only transnational site. [3]