ring expansion
21Hockwell Ring — infobox UK place country = England latitude= 51.904 longitude= 0.475 official name= Hockwell Ring os grid reference= TL0523 population= 4,000 (est.) region= East of England unitary england= Luton lieutenancy england= Bedfordshire constituency… …
22Townend ring — A Townend Ring is a narrow chord cowling ring round the cylinders of a radial engine to reduce drag and improve cooling. The Townend ring was the invention of Dr Hubert Townend of British based Boulton Paul Aircraft in 1929. [Original 1930… …
23Puiseux expansion — In mathematics, a Puiseux expansion is a formal power series expansion of an algebraic function. Puiseux s theorem is a classical existence theorem for such an expansion, in the case of one variable.If K is an algebraically closed field of… …
24Fire ring — A fire ring is a device used to contain campfires and prevent them from spreading and turning into wildfires.A fire ring is designed to contain a fire that is built directly upon the ground, such as a campfire. Fire rings have no bottom, and are… …
25equalizing and reinforcing ring — devices used on some expansion joints fitting snugly in the roots of the convolutions. The primary purpose of these devices is to reinforce the bellows against internal pressure. Equalizing rings are made of cast iron, carbon steel, stainless… …
26INSTITUTE OF SOUTHERN JEWISH LIFE, GOLD-RING/WOLDENBERG — The institute was founded in 1986 as the Museum of the Southern Jewish Experience; in 2000 its name was changed to the Goldring/Woldenberg Institute of Southern Jewish Life. Based in Jackson, Mississippi, the institute works to preserve and… …
27Tiffeneau–Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) is the chemical reaction of a 1 aminomethyl cycloalkanol with nitrous acid to form an enlarged cycloketone. The Tiffeneau–Demjanov ring expansion, Tiffeneau–Demjanov rearrangement, or TDR, provides an… …
28Tiffeneau-Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) the chemical reaction of 1 aminomethyl cycloalkanols with nitrous acid to form an enlarged cycloketone.Ref|Tiffeneau1937After being in existence for over 65 years, the reaction is popular among organic… …
29Nitrene — The generic structure of a nitrene group In chemistry, a nitrene (R N:) is the nitrogen analogue of a carbene. The nitrogen atom has only 6 valence electrons and is therefore considered an electrophile. A nitrene is a reactive intermediate and is …
30Demjanov rearrangement — The Demjanov rearrangement is the chemical reaction of primary amines with nitrous acid to give rearranged alcohols.[1][2][3] It involves substitution by a …
