The present studies investigated the cellular mechanisms for the detrimental effects of high dose whole body γ-irradiation on bone. In addition, radioadaptation and bone marrow transplantation were assessed as interventions to mitigate the skeletal complications of irradiation. Increased trabecular thickness and separation and reduced cancellous bone volume fraction, connectivity density,...
A custom radiation monitoring system was developed by Oregon State University at the request of the Woods Hole Oceanographic Institute to measure radioactive cesium contaminants in the ocean waters near Fukushima Dai’ichi Nuclear Power Plant. The system was to be used on board the R/V Ka’imikai-O-Kanaloa during a 15 d...
Marine sediments are vast sources and reservoirs of methane, a potent greenhouse gas. Most of this methane is anaerobically oxidized by archaea before it can reach the overlying ocean, though the efficiency of this process often depends on methane fluxes and mechanisms of fluid transport. Anaerobic methanotrophic archaea, or ANME,...
This project calculates the value of β for ice particles based on wavelength dependent values of their refractive and absorptive indices. β is the ratio of the force due to radiation to the force due to gravity acting on a particle in the solar system. This parameter can later be...
Surface Canopy Water (SCW) is the intercepted rain water that resides within the tree canopy and plays a significant role in the hydrological cycle. Challenges arise in measuring SCW in remote areas using traditional ground based techniques. Remote sensing in the radio spectrum has the potential to overcome the challenges...
There is growing evidence that children develop science-related interests in early childhood, before they enter school, and that these interests may have long-term implications for science participation and achievement. Although researchers have made headway in describing interest development in the preschool years, little is currently known about the proximal processes...
The impact of various factors on seed production in a
Douglas-fir (Pseudotsuga menziesii) seed orchard in
western Oregon was examined by monitoring the fate of
seeds in thirty cones, stratified into three crown levels,
on each of ten trees during the 1984 growing season.
Cones were examined monthly between April...
The non-ideal aqueous electrolyte simulator (NAELS) is composed of
three major parts: a Newton-Raphson non-linear optimization program written
by Weare, et al (1987); an activity coefficient subroutine for non-ideal
electrolyte systems based on Pitzer's model; and an extensive, user expandable
database. It is robust, stable, and requires neither thermodynamic data...
An analysis and modeling method of the diagnostic characteristics of a mechanical or electromechanical system is presented. Diagnosability analysis is especially relevant given the complexities and functional interdependencies of modern-day systems, since improvements in diagnosability can lead to a reduction of a system's life-cycle costs. The diagnosis process of a...