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  2. Leitner system - Wikipedia

    en.wikipedia.org/wiki/Leitner_system

    For example, if this is session 0, boxes 0-2-5-9, 1-3-6-0, 5-7-0-4, and 8-0-3-7 are done because they all contain the number 0. If a reviewed card isn't successful, it moves back to Deck Current. If a reviewed card is successful and the last number of its box matches the current session number, then that card moves to the Retired Deck.

  3. Wallops Flight Facility Launch Area 3 - Wikipedia

    en.wikipedia.org/wiki/Wallops_Flight_Facility...

    Launch Area 3 contains two launch pads, Area 3 and Area 3A. Area 3 , also known as the Mk.I launcher , was used by eighteen Scout rockets between 1960 and 1964. The first launch from the complex, on 18 April 1960, was the maiden flight of the Scout launch vehicle, using the Scout X configuration.

  4. Lanthanum - Wikipedia

    en.wikipedia.org/wiki/Lanthanum

    La 2 O 3 + 6 NH 4 Cl → 2 LaCl 3 + 6 NH 3 + 3 H 2 O. This is followed by reduction with alkali or alkaline earth metals in vacuum or argon atmosphere: [17] LaCl 3 + 3 Li → La + 3 LiCl. Also, pure lanthanum can be produced by electrolysis of molten mixture of anhydrous LaCl 3 and NaCl or KCl at elevated temperatures. [17]

  5. Course Hero - Wikipedia

    en.wikipedia.org/wiki/Course_Hero

    [6] Course Hero acquired Symbolab, a mathematics problem solver, in October 2020, and acquired LitCharts, a literature guide resource, in June 2021. Terms of these acquisitions were not disclosed. [7] [8] In December 2021, the company received a $380 million Series C at a $3.6 billion valuation.

  6. Lanthanum oxide - Wikipedia

    en.wikipedia.org/wiki/Lanthanum_oxide

    Lanthanum oxide is used in optical materials; often the optical glasses are doped with La 2 O 3 to improve the glass' refractive index, chemical durability, and mechanical strength. [8] 3 B 2 O 3 + La 2 O 32 La(BO 2) 3 [clarification needed] The addition of the La 2 O 3 to the glass melt leads to a higher glass transition temperature from ...

  7. CHART #2: SIDE-BY-SIDE COMPARISON OF DEMOCRATIC CANDIDATESÕ HEALTH PLANS 6 Please cite Susan J. Blumenthal, M.D., Jessica B. Rubin, Michelle E. Treseler, Jefferson Lin, and David Mattos. U.S. Presidential CandidatesÕ Prescriptions for a Healthier Future: A Side-by-Side Comparison. Huffington Post July 8, 2007. <website> in any future use of

  8. Lanthanide - Wikipedia

    en.wikipedia.org/wiki/Lanthanide

    The colors of the γ-sesquisulfides are La 2 S 3, white/yellow; Ce 2 S 3, dark red; Pr 2 S 3, green; Nd 2 S 3, light green; Gd 2 S 3, sand; Tb 2 S 3, light yellow and Dy 2 S 3, orange. [60] The shade of γ-Ce 2 S 3 can be varied by doping with Na or Ca with hues ranging from dark red to yellow, [ 49 ] [ 60 ] and Ce 2 S 3 based pigments are used ...

  9. 'I'm 65 and In the Best Shape of My Life—This Is the Exact ...

    www.aol.com/im-65-best-shape-life-112500521.html

    Strength training. She combines all that swimming with strength training.She says that she gets in the weight room twice a week for 30 minutes each time, with a primary focus on her shoulders and ...