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B1922
B19 or B-19 may refer to: * B19 (New York City bus), serving Brooklyn * Douglas XB-19, an experimental bomber aircraft * Parvovirus B19, the virus that causes fifth disease * Caro–Kann Defence ECO code in chess * Patient B-19 * Boron-19 (B-19 or 19B), an isotope of boron * LNER Class B19, classified B2 until 1945 {{Letter-NumberCombDisambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B19 (New York City Bus)
The Metropolitan Transportation Authority (MTA) operates a number of bus routes in Brooklyn, New York (state), New York, United States; one minor route is privately operated under a city government-granted monopoly, franchise. Many of them are the direct descendants of streetcar lines (see list of streetcar lines in Brooklyn); the ones that started out as bus routes were almost all operated by the Brooklyn Bus Corporation, a subsidiary of the Brooklyn–Manhattan Transit Corporation, until the New York City Board of Transportation took over on June 5, 1940. Of the 55 local Brooklyn routes operated by the New York City Transit Authority, roughly 35 are the direct descendants of one or more streetcar lines, and most of the others were introduced in full or in part as new bus routes by the 1930s. Only the B32, the eastern section of the B82 (then the B50), the B83, and the B84 were created by New York City Transit from scratch, in 1978, 1966, and 2013, respectively. List of routes Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Douglas XB-19
The Douglas XB-19 was a four-engined, piston-driven heavy bomber produced by the Douglas Aircraft Company for the United States Army Air Forces (USAAF) during the early 1940s. It was the largest bomber built for the USAAF until 1946, and was originally given the designation XBLR-2 (''XBLR'' denoting "Experimental Bomber Long Range"). Design and development The XB-19 project was intended to test flight characteristics and design techniques for giant bombers. Despite advances in technology that made the XB-19 obsolete before it was completed, the Army Air Corps believed the prototype would be useful for testing despite Douglas Aircraft wanting to cancel the expensive project. Its construction took so long that competition for the contracts to build the XB-35 and XB-36 occurred two months before its first flight. The plane first flew on 27 June 1941, more than three years after the construction contract was awarded. It was based at Wright Field from January to November 1942. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parvovirus B19
Primate erythroparvovirus 1, generally referred to as B19 virus (B19V), parvovirus B19 or sometimes erythrovirus B19, is the first (and until 2005 the only) known human virus in the family '' Parvoviridae'', genus ''Erythroparvovirus''; it measures only 23–26 nm in diameter. The name is derived from Latin, parvum meaning small, reflecting the fact that B19 ranks among the smallest DNA viruses. B19 virus is most known for causing disease in the pediatric population; however, it can also affect adults. It is the classic cause of the childhood rash called fifth disease or erythema infectiosum, or "slapped cheek syndrome". The virus was discovered by chance in 1975 by Australian virologist Yvonne Cossart. It gained the B19 name because it was discovered in well B19 of a large series of microtiter plates. Virology Erythroviruses belong to the '' Parvoviridae'' family of small DNA viruses. Human parvovirus B19 is a non-enveloped, icosahedral virus that contains a single-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caro–Kann Defence
The Caro–Kann Defence is a chess opening characterised by the moves: :1. e4 c6 The Caro–Kann is a common defence against the King's Pawn Opening. It is classified as a Semi-Open Game, like the Sicilian Defence and French Defence, although it is thought to be more solid and less dynamic than either of those openings. It often leads to good endgames for Black, who has the better pawn structure. It allows Black to circumvent enormous bodies of theory in 1.e4 openings such as the Ruy Lopez and the Sicilian Defence. Unlike its sister opening, the French Defence, the Caro–Kann does not hinder the development of Black's light-squared bishop. However, it comes at the cost of a tempo because Black has to play 1...c6 before pushing the pawn to c5, whereas Black can push c7–c5 in one move in the French Defence. White can combat the Caro–Kann in several different ways, often gaining a space advantage; additionally, Black has less mobility and can lag in development. In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patient B-19
Robert Galbraith Heath (May 9, 1915 – September 21, 1999) was an American psychiatrist. He followed the theory of biological psychiatry that organic defects were the sole source of mental illness, and that consequently mental problems were treatable by physical means. He published 425 papers and three books. One of his first papers is dated 1946. He was profiled as a "famous American psychiatrist" in 1983 by ''Psychiatric Annals''. Heath founded the Department of Psychiatry and Neurology at Tulane University, New Orleans, in 1949 and remained its chairman until 1980. He performed many experiments there involving electrical stimulation of the brain via surgically implanted electrodes. He placed deep brain stimulation (DBS) electrodes into the brains of more than 54 patients. Indeed, he has been cited as the first, or one of the first, researcher(s) to have placed electrodes deep into the brains of living human patients. It has been suggested that this work was financed in part ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boron-19
Boron (5B) naturally occurs as isotopes and , the latter of which makes up about 80% of natural boron. There are 13 radioisotopes that have been discovered, with mass numbers from 7 to 21, all with short half-lives, the longest being that of , with a half-life of only and with a half-life of . All other isotopes have half-lives shorter than . Those isotopes with mass below 10 decay into helium (via short-lived isotopes of beryllium for and ) while those with mass above 11 mostly become carbon. List of isotopes , - , ?This isotope has not yet been observed; given data is inferred or estimated from periodic trends. , style="text-align:center" , 5 , style="text-align:center" , 1 , , p-unstable , 2p? , ? , 2−# , , , - , , style="text-align:center" , 5 , style="text-align:center" , 2 , , [] , p , Subsequently decays by double proton emission to for a net reaction of → + 3 , (3/2−) , , , - , Has 1 halo nucleus, halo proton , style="text ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
