The AAPD recommends placement of dental pit and fissure sealants on surfaces that are high risk or that already exhibit incipient carious lesions. Protection provided by sealants may be enhanced by the addition of ion-releasing, anti-microbial filler particles of bioactive glass.
Objective: We prepared novel dental pit and fissure sealant...
To examine the influence of forest management on wildlife immunity, the innate immune system of wild deer mice (Peromyscus maniculatus) inhabiting forest plots of different management intensities in the Oregon coast range was measured by bactericidal assay. Bactericidal activity was compared across three management levels, including 40-50 year old forest...
Adequate energy stores are essential for animal survival, and sophisticated neuroendocrine mechanisms evolved to stimulate foraging in response to nutrient deprivation. Food search behavior is usually investigated in young animals, and it is not known how aging alters this behavior. To address this question in Drosophila, we compared the ability...
It has been observed and documented that Pisaster ochraceus has very striking colors, but the reasons behind the coloration are still unknown. Three coloration categories were determined and used for a feeding trial study to investigate the effects of diet on coloration in Pisaster ochraceus. This study involved 30 hand...
Throughout Oregon State University, a permanent, publicly-owned art collection not only exists under the radar of most people's awareness, this collection is part of a state mandate in existence since the late 1970's and too manages to slip most people's awareness at all. It is the Percent for Art Collection,...
Most animals are active either during the day, night, or twilight, and transition periods between these times exhibit interesting behavior. Actions may be related to avoiding predators, seeking shelter, defending territory, feeding, or other interests. Herbivorous fishes on coral reefs, such as parrotfishes, forage constantly throughout daylight periods due to...
Farensoid X Receptor (FXR) is a very flavoring protein for the treatment and prevention of the many conditions related to metabolic syndrome. Our experiment explores the binding activities of FXR when introduced to various natural and synthetic ligands. Currently, an initial assay showing the Stern-Volmer relationship of our date supports...
Some studies have found that responses are faster when the orientation of an object’s graspable part corresponds with the response location than when it does not (i.e., the object-based correspondence effect). We examined Goslin et al.’s (2012) claim that the effect is the result of object-based attention (visual-action binding). As...
In 1861, in order to recoup foreign loans, France invaded Mexico. Assured by the Civil War in the United States that American response would be limited, Napoleon III undertook a scheme to replace the republican president Benito Juarez with a monarchy headed by the Austrian Archduke Maximilian von Hapsburg. Bracketed...
The overall objective of this research was to determine which, if any, myosin XI proteins and exocyst proteins play a role in growth of Arabidopsis thaliana hypocotyls and root hairs. This involved the study of whether exocyst and myosin proteins work together during cell expansion within these two plant parts....
We found that a strains of Yersinia pestis (KIM5) which lacked the nhaA gene was fully attenuated in a plague model. This gene produces a protein of the sodium-proton antiporter family which expel sodium ions from the bacterial cytoplasm in exchange for hydrogen ions, or protons, from the surrounding environment....
Parathyroid hormone (PTH) is directly involved in breast cancer (BC) metastasis, as well as the severity of metastatic tumors. Excess PTH, caused by insufficient dietary calcium, may be an important and preventable factor affecting BC metastasis to bone. PTH levels increase with age in most women, largely due to insufficient...
Jolly Jack Junior, by Jeff Goode and directed by Sarah McKenney is a swashbuckling farce complete with pirates, wenches and sword-fights. The cast includes OSU students Sam Thompson and Alexa Johnston.
We previously reported that inhibition of the Na⁺ translocating NADH:ubiquinone oxidoreductase (NQR), either by chemical inhibition or mutation, increased toxT transcription in Vibrio cholerae. In this study, we revealed that the nqr mutant strain showed similar phenotypes as the Escherichia coli NADH dehydrogenase I (nuo) mutant strain (e.g. growth defect...
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...
This thesis presents a measurement of the resonance integral and thermal cross section – which together represent the total neutron absorption cross section – of the naturally occurring isotopes of platinum that emit gamma radiation upon neutron absorption. The measurements were made via neutron activation analysis. Platinum samples were bombarded...
This research looks at the demographics, industry, and land use shifts over the past decades in the John Day Region of Eastern Oregon in order to better understand the shifting rural community in the United States. Census data was collected and analyzed to describe the shift. Published literature and interviews...