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Votchal-Tiffeneau test - translation to russian
общая лексика
проба Вотчал-Тиффно
![The size of [[induration]] is measured 48–72 hours later. Erythema (redness) should not be measured.](https://commons.wikimedia.org/wiki/Special:FilePath/Mantoux test.jpg?width=200 "The size of [[induration]] is measured 48–72 hours later. Erythema (redness) should not be measured.")
медицина
реакция Манту
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медицина
непрямая проба Кумбса
Definition
Wikipedia
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 easy way to increase amino-substituted cycloalkanes and cycloalkanols in size by one carbon. Ring sizes from cyclopropane through cyclooctane are able to undergo Tiffeneau–Demjanov ring expansion with some degree of success. Yields decrease as initial ring size increases, and the ideal use of TDR is for synthesis of five, six, and seven membered rings. A principal synthetic application of Tiffeneau–Demjanov ring expansion is to bicyclic or polycyclic systems. Several reviews on this reaction have been published.
