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The Van Slyke determination is a chemical test for the determination of amino acids containing a primary amine group. It is named after the biochemist Donald Dexter Van Slyke (1883-1971). [1] One of Van Slyke's first professional achievements was the quantification of amino acids by the Van Slyke determination reaction. [2]
Donald Dexter Van Slyke (March 29, 1883 – May 4, 1971), nicknamed Van, was a Dutch American biochemist. His achievements included the publication of 317 journal articles and 5 books, [ 1 ] as well as numerous awards, among them the National Medal of Science and the first AMA Scientific Achievement Award . [ 1 ]
Van Leusen reaction; Van Slyke determination; Varrentrapp reaction; Vilsmeier reaction; Vilsmeier–Haack reaction; Voight amination; Volhard–Erdmann cyclization; von Braun amide degradation; von Braun reaction; von Richter cinnoline synthesis; von Richter reaction
When studying urease at about the same time as Michaelis and Menten were studying invertase, Donald Van Slyke and G. E. Cullen [29] made essentially the opposite assumption, treating the first step not as an equilibrium but as an irreversible second-order reaction with rate constant +. As their approach is never used today it is sufficient to ...
By contrast, at almost the same time, Donald Van Slyke and G. E. Cullen [79] treated the binding step as an irreversible reaction. The Briggs–Haldane equation was of the same algebraic form as both of the earlier equations, but their derivation is based on the quasi- steady state approximation, which is the concentration of intermediate ...
With nitrous acid, one obtains glycolic acid (van Slyke determination). With methyl iodide, the amine becomes quaternized to give trimethylglycine, a natural product: H 3 N + CH 2 COO − + 3 CH 3 I → (CH 3) 3 N + CH 2 COO − + 3 HI. Glycine condenses with itself to give peptides, beginning with the formation of glycylglycine: [34] 2 H 3 N ...
Due to the non-linearity of the equation, numerical techniques such as the non-linear least-squares method can be used to solve the van Genuchten parameters. [4] [5] The accuracy of the estimated parameters will depend on the quality of the acquired dataset (and ). Structural overestimation or underestimation can occur when water retention ...
He was born on July 10, 1900, in Ithaca, New York, to Charles Nelson Cole, an instructor in Latin at Cornell University and Mabel Stewart. Kenneth had a younger brother, Robert H. Cole [Wikidata], with whom he remained very close throughout his life despite a large difference in age; they were joint authors of four papers published between 1936 and 1942.