R. W. Thomas

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A fuel cell powered airplane has been designed and constructed at the Georgia Insitute of Technology to develop an understanding of the design and implementation challenges of fuel cell-powered unmanned aerial vehicles (UAVs). A custom 448W net output proton exchange membrane fuel cell powerplant has been constructed and tested. A demonstrator aircraft was(More)
A review of the literature describing the interaction of digoxin and spironolactone is presented. Two mechanisms of possible interaction are discussed. Spironolactone and its metabolites may interfere with digoxin radioimmunoassay or alter the pharmacokinetics of digoxin. The occurrence of either or both of these processes may make interpretation of serum(More)
Given that today's AIDS cases are merely a delayed reflection of HIV infections which occurred in years past, forecasting systems can be used to backtrack and infer HIV prevalence from AIDS data. Process-based models mimicking the timing of the host-HIV relationship have also produced findings about the reasons for the current slow growth of the epidemic(More)
Much geographical work about mental illness has been aggregative in nature and, consequently, has ignored variation that might be attributed to individuals. The research reported here is intended to reverse this trend by applying the methods of categorical data analysis to the detailed patient histories contained in the Salford Psychiatric Case Register.(More)
Epidemiologists have unearthed a good deal of both anecdotal and statistical evidence to suggest that Hodgkin's disease might be a transmissible entity. This paper critically reviews those findings which have led to the building of a single-region carrier model capable of making deterministic simulations for the temporal incidence of Hodgkin's disease. The(More)
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