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When it is injected into the hot exhaust gas stream, the water evaporates and the urea thermally decomposes [13] to form ammonia (NH 3) and isocyanic acid (HNCO): (NH 2) 2 CO → NH 3 + HNCO. The isocyanic acid reacts with the water vapor and hydrolyses to carbon dioxide and ammonia: HNCO + H 2 O → CO 2 + NH 3. Overall, thus far: (NH 2) 2 CO ...
Patrick Matthew (20 October 1790 – 8 June 1874) was a Scottish grain merchant, fruit farmer, forester, and landowner, who contributed to the understanding of horticulture, silviculture, and agriculture in general, with a focus on maintaining the British navy and feeding new colonies.
Ralph Shearer Northam (born September 13, 1959) is an American physician and politician who was the 73rd governor of Virginia from 2018 to 2022. [1] A pediatric neurologist by occupation, he was an officer in the U.S. Army Medical Corps from 1984 to 1992.
Immanuel Kant [a] (born Emanuel Kant; 22 April 1724 – 12 February 1804) was a German philosopher and one of the central Enlightenment thinkers. Born in Königsberg, Kant's comprehensive and systematic works in epistemology, metaphysics, ethics, and aesthetics have made him one of the most influential and controversial figures in modern Western philosophy.
The National Association for the Advancement of Colored People (NAACP) [a] is an American civil rights organization formed in 1909 as an interracial endeavor to advance justice for African Americans by a group including W. E. B. Du Bois, Mary White Ovington, Moorfield Storey, Ida B. Wells, Lillian Wald, and Henry Moskowitz.
A form of melanin makes up the ink used by many cephalopods (see cephalopod ink) as a defense mechanism against predators. Melanins also protect microorganisms, such as bacteria and fungi, against stresses that involve cell damage such as UV radiation from the sun and reactive oxygen species .
The major changes to the Times Roman typeface itself were a reduction in the slope of italic characters to 12 degrees from 16 degrees, so as to reduce the need for kerning, and a change in the form of italic 'v' and 'w' so that italic 'v' could be more easily distinguished from a Greek nu. [77]