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1,4,7-Triazacyclononane, known as "TACN" which is pronounced "tack-en," is an aza-crown ether with the formula (C 2 H 4 NH) 3. [1] TACN is derived, formally speaking, from cyclononane by replacing three equidistant CH 2 groups with NH groups. TACN is one of the oligomers derived from aziridine, C 2 H 4 NH.
The Cierva C.1 was an experimental autogyro built by Juan de la Cierva in Spain in 1920, the forerunner of his successful series of autogyros. The C.1 was created by taking the fuselage from a Deperdussin fixed-wing aircraft and mounting two rotors shaft above it. [1]
Angiotensin (1-7) is a vasodilator agent affecting cardiovascular organs, such as heart, blood vessels and kidneys, with functions frequently opposed to those attributed to the major effector component of the RAS, angiotensin II (Ang II).
Exam C was 2 hours long in 2005, 2004 and 2003 and 3 hours long since 2002. Exam C/2 (Proba C/2) — The language of study in a school where the teaching is done in a language other than Romanian (usually the language of an ethnic group) — written examination — organized exactly like Exam A/2.
The SI defines the coulomb by taking the value of the elementary charge e to be 1.602 176 634 × 10 −19 C, [7] but was previously defined in terms of the force between two wires. The coulomb was originally defined, using the latter definition of the ampere, as 1 A × 1 s . [ 8 ]
The Lockheed C-5 Galaxy is a large military transport aircraft designed and built by Lockheed, and now maintained and upgraded by its successor, Lockheed Martin.It provides the United States Air Force (USAF) with a heavy intercontinental-range strategic airlift capability, one that can carry outsized and oversized loads, including all air-certifiable cargo.
Christopher Columbus [b] (/ k ə ˈ l ʌ m b ə s /; [2] between 25 August and 31 October 1451 – 20 May 1506) was an Italian [3] [c] explorer and navigator from the Republic of Genoa who completed four Spanish-based voyages across the Atlantic Ocean sponsored by the Catholic Monarchs, opening the way for the widespread European exploration and colonization of the Americas.
9-1-1 is an American procedural drama television series created by Ryan Murphy, Brad Falchuk, and Tim Minear. The series had aired on Fox and currently airs on ABC . [ 1 ] The series follows the lives of Los Angeles first responders : police officers , paramedics , firefighters , and dispatchers .