Open Access. Powered by Scholars. Published by Universities.®
- Publication Type
Articles 1 - 2 of 2
Full-Text Articles in Entire DC Network
A Model For Stripping Multicomponent Vapor From Unsaturated Soil With Free And Trapped Residual Nonaqueous Phase Liquid, David Ostendorf, Chiu-On Ng, Chiang C. Mei
A Model For Stripping Multicomponent Vapor From Unsaturated Soil With Free And Trapped Residual Nonaqueous Phase Liquid, David Ostendorf, Chiu-On Ng, Chiang C. Mei
David Ostendorf
We present a model for the multicomponent vapor transport due to air venting in an unsaturated zone in the presence of free and trapped phases of residual nonaqueous phase liquid (NAPL). On the microscale the soil particles are assumed to form spherical aggregates with micropores filled with immobile water, trapped phases of NAPL and air. The interaggregate space is occupied with mobile air, and a thin film of free NAPL adheres on the aggregate surface. While the free NAPL can readily be in equilibrium with macropore vapor, the mass transfer from immobile phases in aggregates is rate-limited by aqueous diffusion. …
Infectious Disease And The Conservation Of Free-Ranging Large Carnivores, Dennis L. Murray, Cynthia A. Kapke, James F. Evermann, Todd K. Fuller
Infectious Disease And The Conservation Of Free-Ranging Large Carnivores, Dennis L. Murray, Cynthia A. Kapke, James F. Evermann, Todd K. Fuller
Environmental Conservation Faculty Publication Series
Large carnivores are of vital importance to the stability and integrity of most ecosystems, but recent declines in free-ranging populations have highlighted the potentially devastating effect of infectious diseases on their conservation. We reviewed the literature on infectious diseases of 34 large (maximum body mass of adults >20 kg) terrestrial carnivore species, 18 of which are considered to be threatened in the wild, and examined reports of antibody prevalence (seroprevalence) and cases of infection, mortality and population decline. Of 52 diseases examined, 44% were viral, 31% bacterial and the remainder were protozoal or fungal. Many infections were endemic in carnivores …