This thesis investigates the effect of participating in political activism on mental health. Participants (N = 187, 72% female, N = 135, 77% female) from an Oregon university were randomly assigned to one of three or four conditions (depending on the study) in which they participated in activism related to...
The most accurate method for performing analog signal processing in MOS (metal-oxide-semiconductor) integrated circuits is through the use of switched-capacitor circuits. A switched-capacitor circuit operates as a discrete-time signal processor. These circuits have been used in a variety of applications, such as filters, gain stages, voltage-controlled oscillators, and modulators. A...
Population trends and patterns in species distributions are the major currencies used to examine responses by biodiversity to changing environments. Effective conservation recommendations require that models of both distribution dynamics and population trends accurately reflect reality. However, identification of the appropriate temporal and spatial scales of animal response, and then...
Metabolic defects within the different tissues and cell types of the eye give rise to many human ocular diseases. Polymorphisms in the Cytochrome P450 (CYP) family have been associated with many ocular disorders, particularly Cytochrome P450 1B1 (CYP1B1). Mutations in CYP1B1 have been linked to ocular diseases such as Primary...
The American robin, Turdus migratorius, is one of the best known
birds in North America. Robins are the largest member of the thrush family. Thrushes have large eyes, long legs, and strong bodies. Robins are known for their habit of feeding on earthworms in lawns and for the song they...
At its inception in 1946, the United States’ National School Lunch Program (NSLP) was promoted as a success story; a boon for families navigating poverty, a means of buoying food prices by absorbing farm surplus, and a treatment for hunger in some of our country’s most vulnerable populations. Government subsidies...
Several distinctive environmental movements of the past century have had major influence on public policies in the United States. More generally, social movements that push environmental issues into the limelight have the potential for significantly altering public perceptions, attitudes, and beliefs, thus driving big policy changes. This thesis examines the...
Ocean deoxygenation is predicted to increase in severity over the next few decades, posing a threat to marine life and fishing economies. Improved predictions of ocean deoxygenation depend on a better understanding of the biogeochemical mechanisms that underly this process. Within the realm of biogeochemical mechanisms, this project specifically investigated...
The distribution of mobile marine predators often reflects underlying dynamic ecological processes. The geographical focus of this PhD is the South Taranaki Bight (STB) of New Zealand, where wind-driven coastal upwelling generates productivity and prey to support a blue whale foraging ground. The STB is also New Zealand’s most industrial...
Uranium dioxide has been used in industry both as a fuel for power reactors and as a target for the production of radioisotopes. One of the most important radioisotopes produced using these targets is molybdenum-99 (Mo-99, 65.94hr half-life), which is the parent isotope to technetium-99m (Tc-99m, 6.01hr half-life), a radioisotope...