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  2. Yankee Terminal Radar Approach Control - Wikipedia

    en.wikipedia.org/wiki/Yankee_Terminal_Radar...

    The Yankee Terminal Radar Approach Control (Yankee TRACON, (FAA LID: Y90) is a terminal air traffic control facility located in Windsor Locks, Connecticut operated by the Federal Aviation Administration.

  3. Yttrium-90 - Wikipedia

    en.wikipedia.org/wiki/Yttrium-90

    Yttrium-90 is produced by the nuclear decay of strontium-90 which has a half-life of nearly 29 years and is a fission product of uranium used in nuclear reactors. As the strontium-90 decays, chemical high-purity separation is used to isolate the yttrium-90 before precipitation.

  4. Y90 - Wikipedia

    en.wikipedia.org/wiki/Y90

    Y90 may refer to: Yttrium-90 (Y-90 or 90 Y), an isotope of yttrium; Yankee Terminal Radar Approach Control This page was last edited on 2 November 2022, at 18:50 (UTC

  5. Rotation of axes in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotation_of_axes_in_two...

    In mathematics, a rotation of axes in two dimensions is a mapping from an xy-Cartesian coordinate system to an x′y′-Cartesian coordinate system in which the origin is kept fixed and the x′ and y′ axes are obtained by rotating the x and y axes counterclockwise through an angle .

  6. TERCOM - Wikipedia

    en.wikipedia.org/wiki/TERCOM

    TERCOM systems receive constant fixes during the flight, and thus do not have any drift. Their absolute accuracy, however, is based on the accuracy of the radar mapping information, which is typically in the range of meters, and the ability of the processor to compare the altimeter data to the map quickly enough as the resolution increases.

  7. TheraSphere - Wikipedia

    en.wikipedia.org/wiki/TheraSphere

    TheraSphere is a radiotherapy treatment for hepatocellular carcinoma (HCC) that consists of millions of microscopic, radioactive glass microspheres (20–30 micrometres in diameter) being infused into the arteries that feed liver tumors.

  8. List of online map services - Wikipedia

    en.wikipedia.org/wiki/List_of_online_map_services

    Géoportail - government run public service mapping, covers the whole French territory; ViaMichelin - World maps, city maps, driving directions, Michelin-starred restaurants, hotel booking, traffic news and weather forecast with ViaMichelin. Germany "Geoportal.de", by the Federal Agency for Cartography and Geodesy (BKG). Hong Kong

  9. Contraction mapping - Wikipedia

    en.wikipedia.org/wiki/Contraction_mapping

    A contraction mapping has at most one fixed point. Moreover, the Banach fixed-point theorem states that every contraction mapping on a non-empty complete metric space has a unique fixed point, and that for any x in M the iterated function sequence x, f (x), f (f (x)), f (f (f (x))), ... converges to the fixed point