Matthew L Spaulding

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The optimization of TiO(2)-impregnated chitosan beads (TICB) as an arsenic adsorbent is investigated to maximize the capacity and kinetics of arsenic removal. It has been previously reported that TICB can 1) remove arsenite, 2) remove arsenate, and 3) oxidize arsenite to arsenate in the presence of UV light and oxygen. Herein, it is reported that adsorption(More)
The Europa Clipper mission is a concept under study by a joint JPL and APL team that would conduct detailed reconnaissance of Jupiter's moon Europa, and would investigate whether the icy moon could harbor conditions suitable for life. The mission would perform a detailed investigation of Europa using a highly capable, radiation-tolerant spacecraft that(More)
In the effort to further understanding of the Jovian moon Europa, a Jet Propulsion Laboratory (JPL) and Applied Physics Laboratory (APL) joint team are developing the Europa Clipper spacecraft concept that would provide multiple flybys of Europa during its tour. During the flyby maneuvers, the proposed Europa Clipper spacecraft would be required to operate(More)
This paper discusses the challenges faced in packaging of radiation-sensitive electronics for the Europa project. In order to minimize shielding mass, an efficient layout of electronics within the vault is necessary to keep shielding area to a minimum while providing protection from the severe radiation environment surrounding Jupiter. Tight placement of(More)
Mixed metal oxide impregnated chitosan beads (MICB) containing nanocrystalline Al₂O₃ and nanocrystalline TiO₂ were successfully developed. This adsorbent exploits the high capacity of Al₂O₃ for arsenate and the photocatalytic activity of TiO₂ to oxidize arsenite to arsenate, resulting in a removal capacity higher than that of either metal oxide alone. The(More)
This project is one component of comprehensive multidisciplinary studies performed at the University of Rhode Island 2008 to 2010, to develop a Special Area Management Plan (SAMP) for siting offshore wind farms in Rhode Island waters. A characterization of extreme wave climates is required when considering such ocean structures, e.g. for designing wind(More)
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