Thesis (Ph. D.)--University of Wisconsin--Madison, 1958. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 158-162).

Thesis (Ph. D.)--Johns Hopkins University, 1914. / Biography.

Thesis (Ph. D.)--Columbia University, 1935. / Vita. "Most of the material in this dissertation appeared in the Journal of chemical physics, volume 2, no. 11 ... November, 1934." Bibliography: p. 9.

The proportions of F and OH in synthetic talc, clinohumite, chondro-dite, norbergite, brucite, and sellaite have been determined by X-ray measurement of interplanar spacings. Unit cell refinement has been carried out on intermediate sellaite, approximate composition MgOHF. The compositions of coexisting phases have been determined in forty hydrothermal experiments yielding information on eighteen different chemical equilibria. These data, combined with phase equilibrium and calorimetric data from the literature, have been treated by the method of least squares to produce a thermodynamic model of the system. Computed equilibria based on the model are in good agreement with data on natural assemblages. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

Values of thermodynamic stability constants at 25°C for the complexes of serine with the metal ions. Co^2+, Ni^2+, Cd^2+, Zn^2+, and Cu^2+ were obtained from pH titration data. All measurements were made in aqueous solution, and data were obtained at three different ionic strengths for each metal ion studied. It was assumed that the activity of the zwitterion is unity. The effect of metal ion hydrolysis upon the log K values was taken into account for the calculations. For all the metal ions studied, stability constants for MA^+, MA_2, and MA_3^- were reported with the exception of copper (II) which formed only MA^+ and MA_2 complexes. The stabilities of the complexes studied follow the sequence: Cd^2+ < Co^2+ < Zn^2+ < Ni^2+ < Cu^2+. The value of log K for each step of metal serine interaction, in all cases, increases in the order. K_3 < K_2 < K_1. Under the conditions studied, it was assumed that the metal ion coordinates through the amino nitrogen and the carboxyl oxygen of the serine only. There was no evidence that the hydroxyl group of serine took part in coordination with the metal ions. All calculations of stability constants were carried out using an IBM 7040 computer.

No description available.

published_or_final_version / Chemistry / Doctoral / Doctor of Philosophy

published_or_final_version / Biochemistry / Doctoral / Doctor of Philosophy

No description available.

Thesis (Ph. D.)--University of Washington, 2006. / Vita. Includes bibliographical references (leaves 371-385).