Index Catalog // ScholarsArchive@OSU

Preliminary deployment and evaluation of geophone sensors for monitoring wave activity: GeoMoteShield

Creator:: Lathrop, Eve
Abstract:: This study focuses specifically on the investigation of a new, inexpensive geophone system and its application to monitor wave activity. Studies of seismic observations of coastal cliffs suggest that ground motions generated from local ocean waves may provide a surrogate to limited wave buoy data to quantify the wave contact...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Andrew D. Senogles, Committee Member, representing Geomatics, Civil Engineering

Decoding DOM Degradation with Metatranscriptomics : How Do Sunlight and Microbial Communities Interact to Degrade Dissolved Organic Matter in Arctic Freshwaters?

Creator:: Nalven, Sarah G.
Abstract:: Arctic soils are warming, making vast stores of organic carbon available for conversion to CO₂. This could create a positive feedback loop and accelerate global warming, but the processes that convert this carbon into CO₂ are not well understood. We investigated how the combined activities of sunlight and microbes degrade...
Resource Type:: Masters Thesis
Full Text:: phone calls over the last year. My committee members, Drs. Thomas Sharpton, Andrew Thurber, and

Soil Water Tension Irrigation Criteria Affects Both Stevia Rebaudiana Leaf Yield and Leaf Steviol Glycoside Composition

Creator:: Parris, Cheryl A.
Abstract:: Stevia (Stevia rebaudiana) is a perennial herbaceous plant native to Paraguay and used traditionally by the native Guarani peoples for centuries to sweeten medicinal teas. Stevia has only been commercially cultivated over the past 50 years and cultural practice information suitable for implementation by growers is limited. Currently stevia’s commercial...
Resource Type:: Masters Thesis
Full Text:: “stevioside, rebaudioside A, rebaudioside D, rebaudioside M, enzyme-modified steviol glycosides and other

Elemental analysis of zircon samples from Pacific northwest beaches by INAA

Creator:: Azim, Bilqees
Abstract:: Fifteen sand samples from beaches along the Pacific North were analyzed for their elemental content by the method of instrumental neutron activation analysis (INAA). A separation technique was employed to separate the zircon (a heavy non-magnetic mineral with a specific gravity of 4.67) from the rest of the sample. This...
Resource Type:: Masters Thesis
Full Text:: . I am very thankful to my committee, Dr Roman A. Schmitt, Dr. Andrew C.Klein, and Dr. Jonathan D

Development of a personal computer-based reactivity meter for a research reactor

Creator:: Bakir, Alla J. M.
Abstract:: A personal computer with a Data Acquisition and Control Adapter interface has been used to monitor the power of the Oregon State University TRIGA Reactor, and from the time behavior of the reactor power the reactivity has been computed using the point kinetics equations and displayed on a digital read-out...
Resource Type:: Masters Thesis
Full Text:: thankful to my committee, Dr. Andrew C. Klein, professor Donald L. Amort, and Dr. Jonathan D. Istok. A

Code-sharing in the U.S. airline industry

Creator:: Du, Yan
Abstract:: This dissertation consists of two essays that address code-sharing alliances in the U.S. domestic airline industry. The first essay examines the economic impact of code-sharing using data from the complementary code-sharing agreement between Southwest and ATA Airlines. This code-share agreement is found to decrease air fares and increase passenger volumes...
Resource Type:: Dissertation
Full Text:: completion of this dissertation possible. I would like to thank Dr. Joe Kerkvliet, Dr. Andrew

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Creator:: Cross, Alison
Abstract:: Tree species directly and indirectly affect soil nutrient cycles. I sought to characterize soils and foliage associated with four common canopy tree species (Douglas-fir, western hemlock, western redcedar, and bigleaf maple) in mixed-species old-growth forests of the Oregon Coast Range and to determine whether and how soils differ among the...
Resource Type:: Masters Thesis
Full Text:: menziesii (Mirb.) Franco) and often western redcedar (Thuja plicata Donn ex D. Don.) as well. Succession

Biodiversity Responses in Early Seral Forests of the Klamath-Siskiyou: Comparisons with Birds, Bees, and Ground Beetles among Post-fire, Salvage Logging, and Intensive Forest Management Environments

Creator:: Frank, Graham S.
Abstract:: Early seral forests regenerating from stand-replacing disturbances provide unique habitat for many species in productive, temperate forest landscapes and contribute to supporting biodiversity. Population declines in some species associated with early seral forests have prompted concerns about the conservation of these habitats, particularly the characteristic structural and compositional complexity associated...
Resource Type:: Dissertation
Full Text:: . CONTRIBUTION OF AUTHORS Matthew G. Betts, Meg A. Krawchuk, Andrew J. Kroll, James W. Rivers, Mark E. Swanson

Magnetotelluric Studies of Tectonic Systems and Volcanic Areas of North America

Creator:: Bowles-Martinez, Esteban
Abstract:: Magnetotellurics is used in two geologic settings on scales ranging from 1000-km tectonic structures to local features hundreds of meters wide. These areas are the Midcontinent Rift System (MRS) and its related mantle plume in the northern Midwestern United States and Newberry Volcano in central Oregon. The MRS study uses...
Resource Type:: Dissertation
Full Text:: , Ben Murphy, Nopsiri Chaiyo, Andrew Meigs, Andrew Thurber, Rick Colwell, Marty Fisk, Kellie Wall, and

Limitations to Seedling Regeneration on Tropical Forest Restoration Plantations in Northern Thailand

Creator:: Sangsupan, Hathai A.
Abstract:: This dissertation investigated potential ecological limitations to seedling regeneration in young, seasonally dry, evergreen forest restoration plantations in northern Thailand. We explored whether recruitment of colonizing tree species in the restoration plantations can be attributed to seed dispersal mode (i.e. abiotic or animal dispersal) and seed size. We did this...
Resource Type:: Dissertation
Full Text:: compared to trees ≥ 10 cm dbh in HKK-FDP. (d) Abundance distribution of seed-sizes among colonizing

ScholarsArchive@OSU

Preliminary deployment and evaluation of geophone sensors for monitoring wave activity: GeoMoteShield

Decoding DOM Degradation with Metatranscriptomics : How Do Sunlight and Microbial Communities Interact to Degrade Dissolved Organic Matter in Arctic Freshwaters?

Soil Water Tension Irrigation Criteria Affects Both Stevia Rebaudiana Leaf Yield and Leaf Steviol Glycoside Composition

Elemental analysis of zircon samples from Pacific northwest beaches by INAA

Development of a personal computer-based reactivity meter for a research reactor

Code-sharing in the U.S. airline industry

Tree species-soils relationships in old-growth forests of the Oregon Coast Range

Biodiversity Responses in Early Seral Forests of the Klamath-Siskiyou: Comparisons with Birds, Bees, and Ground Beetles among Post-fire, Salvage Logging, and Intensive Forest Management Environments

Magnetotelluric Studies of Tectonic Systems and Volcanic Areas of North America

Limitations to Seedling Regeneration on Tropical Forest Restoration Plantations in Northern Thailand

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