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Calcifediol, also known as calcidiol, 25-hydroxycholecalciferol, or 25-hydroxyvitamin D3 (abbreviated 25 (OH)D3), [1] is a form of vitamin D produced in the liver by hydroxylation of vitamin D 3 (cholecalciferol) by the enzyme vitamin D 25-hydroxylase. [3][4][5] Calcifediol can be further hydroxylated by the enzyme 25 (OH)D-1α-hydroxylase ...
Advanced Placement. Advanced Placement (AP) Calculus (also known as AP Calc, Calc AB / BC, AB / BC Calc or simply AB / BC) is a set of two distinct Advanced Placement calculus courses and exams offered by the American nonprofit organization College Board. AP Calculus AB covers basic introductions to limits, derivatives, and integrals.
Escape speed at a distance d from the center of a spherically symmetric primary body (such as a star or a planet) with mass M is given by the formula [2] [3] = = where: G is the universal gravitational constant (G ≈ 6.67×10 −11 m 3 ·kg −1 ·s −2)
Fuel fraction is a key parameter in determining an aircraft's range, the distance it can fly without refueling . Breguet ’s aircraft range equation describes the relationship of range with airspeed, lift-to-drag ratio, specific fuel consumption, and the part of the total fuel fraction available for cruise, also known as the cruise fuel ...
2019 (Monday) 2018 (Sunday) 2017 (Saturday) 2016 (Friday) 2015 (Wednesday) March 25 is the 84th day of the year (85th in leap years) in the Gregorian calendar ; 281 days remain until the end of the year. Until 1752 it was the official date of the beginning of the year in England (in Julian calendar).
184.0. 228.4. —. —. Table data obtained from CRC Handbook of Chemistry and Physics 44th ed. The " (s)" annotation indicates equilibrium temperature of vapor over solid. Otherwise value is equilibrium temperature of vapor over liquid. log10 of Cyclohexane vapor pressure. Uses formula: obtained from CHERIC [5]
List of countries by income equality. World map of income inequality Gini coefficients by country. Based on World Bank data ranging from 1992 to 2020. [1] This is a list of countries or dependencies by income inequality metrics, including Gini coefficients. The Gini coefficient is a number between 0 and 1, where 0 corresponds with perfect ...
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75