Thesis (M.S.)--Ohio State University, 1963. / Includes bibliographical references. Available online via OhioLINK's ETD Center

No description available.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1971. / Typescript. Vita. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1965. / eContent provider-neutral record in process. Description based on print version record. Bibliography: l. 69-73.

Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1931. / The entire thesis text is included in file. Typescript. Title from title screen of thesis/dissertation PDF file (viewed July 9, 2010)

Kyoto University (京都大学) / 0048 / 新制・課程博士 / 博士(工学) / 甲第13815号 / 工博第2919号 / 新制||工||1431(附属図書館) / 26031 / UT51-2008-C731 / 京都大学大学院工学研究科原子核工学専攻 / (主査)教授 森山 裕丈, 教授 山名 元, 教授 柴田 誠一 / 学位規則第4条第1項該当

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Calcium bentonite deposits of the Glendon and Bucatunna formations of the Oligocene Vicksburg Group located in Smith County, Mississippi were examined to determine the depositional environment, diagenetic history and origin of the bentonite. Traditionally, calcium bentonite was considered to be the product of the weathering of volcanic ash deposits. The hypothesis tested is that the bentonite deposits are not a result of weathered volcanic ash, but are a result of weathered marl. Core samples were drilled from the Chisholm bentonite mine in Smith County and were studied using X-ray diffraction, scanning electron microscopy, and petrographic microscopy. Abundant bacteria along with nanometer-scale organic textures were found throughout and are consistently associated with bentonite, illite, and smectite. No evidence of volcanic ash was found. It appears that the calcium bentonite clays in the Glendon and Bucatunna formations of Smith County, Mississippi formed from weathering, including bacterial activity, of glauconite-bearing marl.

Plutonium (Pu) is one of the key elements in high-level radioactive waste due to its long half-life. Understanding the sorption behavior of key radionuclides such as Pu and U is important to the safety assessment calculation for a deep geological repository for high-level radioactive waste. Europium (III) (Eu(III)), a chemical analogue of Pu, has shared similar sorption behaviors as Pu. The aim of this study is to investigate the sorption properties of europium onto MX-80 bentonite and crystalline rock (granite), a potential host rock for a deep geological repository for some countries, as a function of pH and ionic strength using batch experiment technique and surface complexation modeling. The experiments are conducted in Ca-Na-Cl solutions. For granite, the sorption coefficient Kd showed proportionate dependence on the pH. The sorption of Eu is dependent on ionic strength at near neutral to low pH region while not dependent on ionic strength at higher pH. For MX-80 bentonite, the sorption of Eu has little dependence on the ionic strength. A surface complexation modeling is also being carried out to examine the experimental results and identify the possible mechanism of the sorption. / Thesis / Master of Applied Science (MASc)

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