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Piperidine is used as a solvent and as a base. The same is true for certain derivatives: N-formylpiperidine is a polar aprotic solvent with better hydrocarbon solubility than other amide solvents, and 2,2,6,6-tetramethylpiperidine is a highly sterically hindered base, useful because of its low nucleophilicity and high solubility in organic ...
The Air Force version was designated the X-37B Orbital Test Vehicle (OTV). The OTV program was built on earlier industry and government efforts by DARPA, NASA, and the Air Force under the leadership of the Air Force Rapid Capabilities Office in partnership with NASA and the Air Force Research Laboratory. Boeing was the prime contractor for the ...
4 total force as of September 2023 (USAF Almanac). [1] T-51 Cessna: United States basic trainer: T-51A: 3 3 total force as of September 2023 (USAF Almanac). [1] T-53A Kadet II: United States basic trainer: T-53A: 24 24 T-53A total force as of September 2023 (USAF Almanac). [1] 25 T-53A operational (WAF 2025). [2] TC-135 Stratolifter: United ...
Dawn Aerospace Mk.2: ... 2020: Prototype: Uncrewed suborbital space plane. Horizontal takeoff and landing. Dream Chaser: USA: Rocket launch: ... the Buran air lift ...
Mk 2 4 [37] [38] 2 on order [39] IAI Searcher: Mk 1/2 [40] MQ-9 Reaper: United States: Surveillance/ Combat: SkyGuardian: 0 8 on order [41] ALS-50 India loitering munition: 100 [42] Kadet Loitering Aerial Munition 50+ on order Developed by DRDO and KDS. Multiple variants; Weight - 15 to 120 kg; Warhead - 2 to 40 kg; Max. Endurance - 12 hrs; Max.
In a statement, a spokesperson for the Secretary of the Air Force tells Scripps News that the potential move of the Air National Guard units into the U.S. Space Force is "to ensure the mission ...
The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Iodine in potassium iodide added to an alcoholic solution of the base in the presence of a little hydrochloric acid gives a characteristic periodide, B 2 ·HI·I 2, crystallizing in steel-blue needles with melting point 145 °C. [7] Piperine can be hydrolyzed by an alkali into piperidine and piperic acid. [7]