In the canyon grasslands of Garden Creek Ranch Preserve in Idaho, where the threatened plant Silene spaldingii occurs and invasion by the exotic species Centaurea solstitialis and Bromus tectorum is proceeding rapidly, I examined environmental and community patterns of site invasion, and evaluated the apparent influence of invasion on Silene...
Much work is presently being done concerning small scale heterogeneities in the
earth's crust. These heterogeneities range from pores in sedimentary rocks up to
fluctuations in the density and seismic constants of the earth's crust with scale lengths
of kilometers. The ability to study and quantify these heterogeneities using seismic...
Covering half of South America, Brazil is one of the largest agricultural and commercial forest producers globally, with a correspondingly complex road network necessary to support the production and marketing processes of such goods. Contrary to global statistics, almost 90% of the country’s road network is classified as unsealed or...
This study focused on the potential water and energy savings from implementing a revised schedule of a recirculation pump connected to a condensing gas tankless water heater located in a study home in Portland, Oregon. The existing recirculation pump activation schedule was studied for its impact on the overall water...
This thesis investigates lithogenic sediments on the Siberian Arctic shelf, their sources, modes of dispersal, transport pathways and post-depositional diagenetic alteration. Working with cores collected from the Chukchi, East Siberian and Laptev Seas, we characterize surface-sediment elemental chemistry and clay mineralogy. We identify five regions with endmember sedimentary compositions. Comparing...
With Type 2 diabetes sharply growing in prevalence around the world, there has been an increased interest in adverse health outcomes resulting from excessively high blood sugar and the associated damage to blood vessels, increasing the risk of a variety of chronic illnesses and mortality. If untreated, high blood sugar...
Nutrition and diet are significantly interrelated with oral health and disease.
The control of diet and nutrient intake and good oral hygiene are important elements
in the prevention and treatment of dental caries and periodontal disease.
Prevention of dental disease is the major focus of dentistry today, and dietary counseling...
The purpose of this study was to develop and evaluate a nutrition
education program for men on healthy eating when dining out. The
Health Belief Model provided the basic framework to identify factors that
would potentially motivate men over 40 to change their dietary behavior
to reduce heart disease risk....
A nutrition education program for employed women on maintaining a
healthy weight was developed and evaluated. Delivery of eight messages (two
per week for four weeks) by electronic mail was tested for effectiveness.
The subjects were 243 members of the Oregon State University Office
and Personnel Association who were randomly...