Timothy R. Ginn

Xiaomeng Liang1
Linda R Woolfenden1
1Xiaomeng Liang
1Linda R Woolfenden
1Alice Dohnalkova
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This is a review of physical, chemical, and biological processes governing microbial transport in the saturated subsurface. We begin with the conceptual models of the biophase that underlie mathematical descriptions of these processes and the physical processes that provide the framework for recent focus on less understood processes. Novel conceptual models(More)
This study investigates the impact of specific environmental conditions on the formation of colloidal U(IV) nanoparticles by the sulfate reducing bacteria (SRB, Desulfovibrio alaskensis G20). The reduction of soluble U(VI) to less soluble U(IV) was quantitatively investigated under growth and non-growth conditions in bicarbonate or(More)
A Bayesian parameter estimation approach is developed for the estimation of joint probability distribution functions for colloid and bacterial fate and transport model parameters describing breakthrough curves (BTCs) obtained through porous media column studies, and is applied to data involving different ionic strength solutions to fit models of differing(More)
The age of ground water in any given sample is a distributed quantity representing distributed provenance (in space and time) of the water. Conventional analysis of tracers such as unstable isotopes or anthropogenic chemical species gives discrete or binary measures of the presence of water of a given age. Modeled ground water age distributions provide a(More)
he impact of human activities on our own and other populations on the planet is making news at an alarming pace. Global warming, ocean and freshwater contamination and acidification, deforestation , habitat destruction and incursion, and a burgeoning human population are associated with a complete spectrum of shifts in population dynamics. Scientists have(More)
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