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 Bill Newton (8 June 1919 – 29 March 1943) was an Australian recipient of the Victoria Cross, honoured for his actions as a bomber pilot in Papua New Guinea during March 1943. Raised in Melbourne, he joined the Citizen Military Forces in 1938 and enlisted in the Royal Australian Air Force (RAAF) in February 1940. He served as a flying instructor in Australia before being posted to No. 22 Squadron, which began operating Boston light bombers in New Guinea late in 1942. Having just taken part in the Battle of the Bismarck Sea, he was on his fifty-second mission when he was shot down. Newton was still posted as missing when given the Victoria Cross in October 1943. It later emerged that he was captured by the Japanese and beheaded. Newton was the only Australian airman to receive a Victoria Cross for action in the South West Pacific theatre of World War II, and the sole Australian to be so decorated while flying with an RAAF squadron. (Full article...)
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 In chemistry, an amino acid is a molecule containing both amine and carboxyl functional groups. In biochemistry, this term refers to alpha-amino acids with the general formula H2NCHRCOOH, where R is an organic substituent.[1] In the alpha amino acids, the amino and carboxylate groups are attached to the same carbon, which is called the α–carbon. The various alpha amino acids differ in which side chain (R group) is attached to their alpha carbon. They can vary in size from just a hydrogen atom in glycine through a methyl group in alanine to a large heterocyclic group in tryptophan. Beyond the amino acids that are found in all forms of life, many non-natural amino acids have vital roles in technology and industry. For example, the chelating agents EDTA and nitrilotriacetic acid are alpha amino acids that are important in the chemical industry. (more...) Recently highlighted: Two-level utilitarianism – Islamic view of Ezra – Weapon dance |
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 Edinburgh is the capital city of Scotland and one of its 32 council areas. Located in the south-east of Scotland, it is bounded to the north by the Firth of Forth estuary and to the south by the Pentland Hills. With a population of 506,520 in mid-2020, Edinburgh is the second-largest city in Scotland by population and the seventh-largest in the United Kingdom. The royal burgh of Edinburgh was founded by King David I in the early 12th century on land belonging to the Crown, and has been capital of Scotland since at least the 15th century. This aerial photograph, with Edinburgh Castle in the foreground, was taken around 1920. Photograph credit: Alfred Buckham; restored by Adam Cuerden Recently featured: Dimitri - Martial eagle - Douglas fir |
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- ^ Proline is an exception to this general formula. It lacks the NH2 group because of the cyclization of the side chain.