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Due to the very slow pole motion of the Earth, the Celestial Ephemeris Pole (CEP, or celestial pole) does not stay still on the surface of the Earth.The Celestial Ephemeris Pole is calculated from observation data, and is averaged, so it differs from the instantaneous rotation axis by quasi-diurnal terms, which are as small as under 0.01" (see [6]).
The Sub-bureau for Rapid Service and Predictions of Earth Orientation Parameters of the IERS, located at the United States Naval Observatory, monitors the Earth's rotation. Part of its mission involves the determination of a time scale based on the current rate of the rotation of the Earth. Other services of IERS are at the Paris Observatory.
Mometasone, also known as mometasone furoate, is a steroid (specifically, a glucocorticoid) medication used to treat certain skin conditions, hay fever, and asthma. [ 10 ] [ 11 ] [ 12 ] Specifically it is used to prevent rather than treat asthma attacks. [ 10 ]
The angular velocity of the Earth is defined to be ω = 72.921 15 × 10 −6 rad/s. [11] This leads to several computed parameters such as the polar semi-minor axis b which equals a × (1 − f) = 6 356 752.3142 m, and the first eccentricity squared, e 2 = 6.694 379 990 14 × 10 −3. [11]
Earth ellipsoid; Earth Gravitational Model; Earth orientation parameters; Earth section paths; Earth's circumference; Earth's orbit; EarthScope; ED50; Elevation; Empirical evidence for the spherical shape of Earth; Engels Maps; Eötvös effect; EPSG Geodetic Parameter Dataset; Equator; Equatorial bulge; Estuary; European Combined Geodetic Network
2-Furoyl chloride is an acyl chloride of furan.It takes the form of a corrosive liquid, which is more irritating to the eyes than benzoyl chloride. [1] 2-Furoyl chloride is a useful pharmaceutical intermediate and is used in the synthesis of mometasone furoate, an antiinflammatory prodrug used in the treatment of skin disorders, hay fever and asthma.
Earth's inner core may be rotating at a slightly higher angular velocity than the remainder of the planet, advancing by 0.1–0.5° per year, although both somewhat higher and much lower rates have also been proposed. [133] The radius of the inner core is about one-fifth of that of Earth. The density increases with depth.
The methasones (or metasones) are a class of corticosteroids [1] which are generally used in dermatology.They are defined by substitution with a methyl group at the C16α or C16β position of the pregnane steroid nucleus.