Landfill leachate is a complex wastewater that contains high levels of ammonium (often over 250 ppm) and trace heavy metals (usually under 0.2 ppm). Microalgae have been shown to inexpensively and effectively treat wastewaters containing high loads of organics and nutrients, as well as adsorb metal ions. This thesis focuses...
Algae have shown great potential as a source for renewable fuels. However, current production schemes have not been able to prove a sustainable energy return on investment due in part to the high costs of nutrient addition and the energy required for drying the biomass. Integrated algae-dairy production systems have...
Algae can be used in a variety of wastewater systems to capture nutrients while fixing carbon dioxide from the atmosphere. I conducted field trials at three locations in Oregon with both corn and potato crops to assess the agronomic value and environmental impact of using the resulting algal biomass as...
This thesis examines archaeological material in order to explore gender and ethnicity issues concerning fur trade era families from a settlement in the Willamette Valley, Oregon. Ethnohistorical information consisting of traders journals and travelers observations, as well as documentation from the Hudson's Bay Company, Catholic church records, and genealogical information...
The presence of an increased accumulation of intraabdominal fat (IAF) has been linked to dyslipidemia, hyperinsulinemia, and hyperglycemia, which precede the development of type 2 diabetes and coronary artery disease (CAD). It has been shown that IAF begins depostition during childhood. Human studies suggest that regular endurance exercise, that does...
The rapid disruption of tropical forests probably imperils global biodiversity more than any other contemporary phenomenon¹⁻³. With deforestation advancing quickly, protected areas are increasingly becoming final refuges for threatened species and natural ecosystem processes. However, many protected areas in the tropics are themselves vulnerable to human encroachment and other environmental...
Using data from the National Institute of Child Health and Human Development’s Study of Early Child Care and Youth Development (SECCYD), this study assessed the implications of the division of labor on relationship intimacy for married and cohabitating dual-earner couples (N= 392 couples). The study focused on what mothers and...
This exploratory study examined the degree of involvement of Oregon State University students in nutrition information. Specific objectives were to: (1) determine the relationship between, a) use of nutrition information, b) interest in nutrient information, c) satisfaction with the amount of information required by law, d) kinds of foods to...
This study was conducted to determine the effects of
shipping stress on the immune system in domestic lambs (Ovis
aries) and to determine the potential of the thymic peptide,
thymulin, to reduce those effects of stress on the immune
system. Treatments consisted of no shipping (as unstressed
controls), shipping (as...
A seed maturation study was conducted to determine the earliest
date seed of subterranean clover (Trifolium subterraneum L.) may be
safely harvested without reduction in yield or seed quality. In 1981
and 1982, seed and bur weight, seed and bur moisture content, germination and seedling vigor were studied to determine...