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In organosulfur chemistry, the thiol-ene reaction (also alkene hydrothiolation) is an organic reaction between a thiol (R−SH) and an alkene (R 2 C=CR 2) to form a thioether (R−S−R'). This reaction was first reported in 1905, [1] but it gained prominence in the late 1990s and early 2000s for its feasibility and wide range of applications.
GDP (Nominal) figures based on 2018 Philippine Constant Prices as published by the Philippine Statistics Office on their various public releases in 2023. GDP in PPP using 2018 Constant Prices not publicized. GDP in USD using 2023 Exchange Rates. % of GDP Regional not publicized for Central Visayas Cities.
The prototype for what would become the C-46, the Curtiss CW-20, was designed in 1937 by George A. Page Jr., the chief aircraft designer at Curtiss-Wright. [4] The CW-20 was a private venture intended to compete with the four-engined Douglas DC-4 and Boeing 307 Stratoliner by the introduction of a new standard in pressurized airliners. [5]
Diazomethane is an organic chemical compound with the formula CH 2 N 2, discovered by German chemist Hans von Pechmann in 1894. It is the simplest diazo compound.In the pure form at room temperature, it is an extremely sensitive explosive yellow gas; thus, it is almost universally used as a solution in diethyl ether.
Designed in 1939, it weighed 121,856 pounds (55,273 kg) including the breech, and could sustain an average rate of fire of 2.4–3 rounds a minute. It could throw a 1,140-pound (520 kg) Mark 18 armor-piercing shell 38,573 yards (35,271 m) at an elevation of 45°, and had a 344-shot barrel life [ 43 ] (about 54 more than the much larger but ...
The rate of youth unemployment in South Korea fluctuated in the 9–11% range between 2001 and 2014. It was above 10% in 2018 and down to 7.1% by the end of 2019 - the lowest level since 2011. It was above 10% in 2018 and down to 7.1% by the end of 2019 - the lowest level since 2011.
Aromatic L-amino acid decarboxylase (AADC or AAAD), also known as DOPA decarboxylase (DDC), tryptophan decarboxylase, and 5-hydroxytryptophan decarboxylase, is a lyase enzyme (EC 4.1.1.28), located in region 7p12.2-p12.1.
On January 28, 2021, the MDRX Micron conversion kit was announced that allowed the purchase of a 11.5" 5.56/.223 Wylde barrel, replacement hand guard, ejector plates, a new 'Raiden' flash hider, and bolt replacement for a side eject bullpup with a total length of 23.43". [24]