The total kinetic energy (TKE) in the fast neutron induced fission of 237Np was measured for neutron energies from En = 2.6 – 45.7 MeV at the LANSCE- WNR facility. The postTKE release decreases non-linearly with increasing incident neutron energy and can be represented as TKE(MeV) = (169.365 ± 1.551)...
Two hundred thirteen mammals were captured on two study areas
between April 1976 and August 1977. Samples of urine and kidney tissue
from 202 mammals were cultured on media suitable for leptospiral growth.
Leptospiral organisms were not isolated from tissue cultures. Sera
from 88 mammals were examined by the microscopic...
Aquatic fecal contamination from non-point sources impairs environmental health and serves as a vehicle for transmission of waterborne disease, resulting in economic losses worldwide. Accurate methods of diagnosing fecal pollution and its source are needed to prevent human exposure, remediate pollution, and reduce economic impacts. In order to obtain this...
Methane is a product of biogeochemical processes which respond to changes in climate. The history of atmospheric methane is recorded by ice cores providing insight into past changes in these biogeochemical processes. This dissertation is comprised of three studies which focus on centennial- and millenial-scale variability of methane from ice...
Accurately simulating gross primary productivity (GPP) in terrestrial ecosystem models is critical because errors in simulated GPP propagate through the model to introduce additional errors in simulated biomass and other fluxes. We evaluated simulated, daily average GPP from 26 models against estimated GPP at 39 eddy covariance flux tower sites...
In this article the authors examine the impact of recent
immigration on rates of serious property crime across communities in
Austin, Texas. The greater Austin foreign-born population has increased
by more than 580 percent since 1980, and Austin is considered a “pre-emerging” immigrant gateway city to the United States. The...