Charles Walker

2Deborah O. Erwin
2Gregory L. Ciupak
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The nutation (wobble) of a spinning spacecraft in the presence of energy dissipation is a well-known problem in dynamics and is of particular concern for space missions. Its rate of growth is characterized by the Nutation Time Constant (NTC). For analytical prediction of the NTC this fuel slosh is often modeled using simple mechanical analogs such as(More)
Anaerobic, fixed film, bioreactors bioaugmented with a dechlorinating microbial consortium were evaluated as a potential technology for cost effective, sustainable, and reliable treatment of mixed chlorinated ethanes and ethenes in groundwater from a large groundwater recovery system. Bench- and pilot-scale testing at about 3 and 13,500 L, respectively,(More)
The <i>Makin' Cake</i> installation [Figures 1--3] is a skill-based competitive single player game with a twist. Players type-in 1950's cake recipes as fast as they can and get points for every word. The twist is extra points are given for swearing. The installation demonstrates that media are transparent to the point of being empty. They do not contain(More)
Biospecimen banking programs are critically dependent on participation of diverse population members. The purpose of this study was to test a pilot intervention to enhance recruitment to a biospecimen bank among racially diverse community members. A mixed methods, community-based participatory research (CBPR) orientation was used to develop and pilot an(More)
Reported barriers to participation in biospecimen banking include unwillingness to undergo blood-draw procedures and concerns about confidentiality breaches, privacy, and discrimination. The study identified key factors and influential perspectives to address these barriers and inform methods to improve recruitment and research participation among racially(More)
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