The YA4-H! program engages youth from across the state of Oregon in Youth Participatory Action Research in their own communities surrounding topics that they feel are important to them.
A spectral fitting routine was developed to analyze X-ray emissions in neutron capture decay
processes that produce ¹⁹⁷Hg and ¹⁹⁷Pt. Through correcting for X-ray emissions, the
77.3 keV γ gamma ray intensities were analyzed. The thermal cross sections for the production of
¹⁹⁷Hg and ¹⁹⁷Pt were found to be 2088...
In the majority of poultry slaughter houses in the United States, birds are hung on shackles and then not touched by human hands until the carcass is processed and packaged. As a result, a reliable method of slaughter that can be automated must be available. Stunning addresses the welfare needs...
Rising CO₂ concentrations in the atmosphere (396 ppmv as of April 2012)
increase the effect of global warming and climate change. CO₂ sequestration has become
a potential method to mitigate climate change. This study focuses on capillary/residual
trapping as a form of geologic CO₂ sequestration. Capillary/residual trapping occurs
when supercritical...
The ritualized courtship of the Red-legged salamander, Plethodon shermani, has been studied extensively. Males and females possess brightly colored red legs, but little is known about the implications of this coloration on mate choice. An alternative hypothesis is that coloration may be used as a warning signal to predators. Animals...
High resolution images of a dim companion in a binary star system can be obtained using a Digital Micromirror Array (DMA) as an optical mask. Imaging can be problematic because the intense light from the main star can saturate the detector and leave the companion unnoticed. Placement of the DMA...
Birds of prey and carnivorous mammals feed on small birds, rodents and other small mammals. Humans perceive many of the prey animals of these predators as well as the predators themselves, as “pests”, and seek to control them. Control methods for these unwanted pests, particularly rodents, have the potential to...
Uranium is naturally radioactive and commonly found in water, soil, and rock. It can occur in elevated concentrations due to the presence of ore bearing bodies and be concentrated through human activities. This research focuses on uranium uptake for Capsicum annuum for three growing conditions. These include a set of...
We compiled Western Pond Turtle (Actinemys marmorata) and Painted Turtle (Chrysemys picta) locations in northwestern North America, consolidating data from multiple sources including nine U.S. State and Canadian Provincial jurisdictions. We assessed numbers of discrete locations, and analyzed distribution patterns temporally and spatially. Western Pond Turtle observation records ranged from...