Index Catalog // ScholarsArchive@OSU

Implementation of an ultra-wideband transceiver for sensor applications

Creator:: Jann, Benjamin J.
Abstract:: Ultra-wideband (UWB) radio is the transmission of data using an extremely wide bandwidth and very low power spectral density. In this thesis, the mereits and challenges of UWB architectures versus conventional narrowband architectures will be compared. Pulsed UWB systems can be implemented with very simple architectures. These advantages make UWB...
Resource Type:: Masters Thesis
Full Text:: submitted to Oregon State University in partial fulfillment of the requirements for the

Effects of release from suppression on hydraulic architecture, photosynthetic capacity and functional wood characteristics in Douglas-fir and western hemlock

Creator:: Renninger, Heidi
Abstract:: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), a shade intolerant species, and western hemlock (Tsuga heterophylla (Raf.) Sarg.), a shade tolerant species, were compared to learn more about the temporal pattern of release from suppression in both species, whether hydraulic architecture or photosynthetic capacity constrain release and how wood functional properties change...
Resource Type:: Masters Thesis
Full Text:: Heidi J. Renninger for the degree of Master of Science in Wood Science and Forest Science presented on

Degradation kinetics of taxol using mass spectroscopy

Creator:: Zhang, Jun
Abstract:: Paclitaxel is a very important anticancer drug commonly called Taxol®. We know from previous work (Hoffman, et al., 1998) that Taxol exists in filbert, Corylus avellana L. material. Quantification of Taxol in filbert plant material is painstaking and hitherto was accomplished by rapidly processing single batches in a complicated procedure...
Resource Type:: Masters Thesis
Full Text:: team was in Washington State in the Gifford Pinchot National Forest where he collected samples of

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Creator:: Giesen, Thomas William
Abstract:: Fire is a major disturbance process in many forests. Long-term studies of the biogeochemical effects of fires, especially on soils, are very rare. Consequently, long-term effects of fire on soils are often hypothesized from short-term effects. In a chronosequence study, I studied 24 western Cascades (Oregon) forest stands thought to...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Thomas William Giesen for the degree of Master of Science in Forest

Influences of clearcut logging on macroinvertebrates in perennial and intermittent headwaters of the Central Oregon Coast Range

Creator:: Banks, Janel
Abstract:: This research was designed to broaden the understanding of how timber-harvest affects aquatic macroinvertebrates in perennial and intermittent headwater streams. This study compared emergent and benthic macroinvertebrate assemblages from 20 headwater streams in the central Oregon Coast Range that varied by harvest condition and flow duration. Through comparison of the...
Resource Type:: Masters Thesis
Full Text:: stream channel length in the United States. These are conservative estimates of headwater contributions

Persistence of spatial distribution patterns of coastal cutthroat trout in a Cascade mountain stream

Creator:: Novick, Marc S.
Abstract:: Previous research in South Fork Hinkle Creek suggested that coastal cutthroat trout exhibit an aggregated spatial pattern across multiple spatial scales. To evaluate the persistence of the observed abundance patterns and identify factors that affect those patterns, half-duplex passive integrated transponders (PIT-tags) were implanted in 320 coastal cutthroat trout (>...
Resource Type:: Masters Thesis
Full Text:: David Pyke of the United States Geological Survey, Forest and Rangeland Ecosystem Science Center (USGS

Climate-growth relationships of western juniper and ponderosa pine at the pine-woodland ecotone in southern Oregon

Creator:: Knutson, Kevin C.
Abstract:: Pinyon-juniper woodlands throughout the western U.S. have expanded rapidly following European settlement during the late 19th century. In central and eastern Oregon, western juniper (Juniperus occidentalis var. occidentalis Hook.) encroachment has been previously documented in the sagebrush steppe and upper elevation aspen communities. While these vegetation changes and dynamics have...
Resource Type:: Masters Thesis
Full Text:: Basin and Range physiographic province of the United States (Hunt 1967). Geology is generally

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Creator:: Viste-Sparkman, Karen
Abstract:: Habitat loss causes a reduction in available resources for wildlife, alters the configuration of remaining habitat, and may isolate wildlife populations. White-breasted nuthatches (Sitta carolinensis) are experiencing long-term population declines in the Willamette Valley of Oregon, where they are historically associated with oak woodlands. As secondary cavity-nesters, white-breasted nuthatches may...
Resource Type:: Masters Thesis
Full Text:: of the permanent collection of Oregon State University libraries. My signature below authorizes

Patterns in understory vegetation communities across canopy gaps in young, Douglas-fir forests of western Oregon

Creator:: Fahey, Robert T.
Abstract:: Canopy gap formation is a major factor contributing to maintenance of overstory species diversity and stand structure in forests and may be integral to development of understory shrub and herb layers as well. Acknowledgement of gap formation as a fundamental feature of natural forests has led to consideration of gaps...
Resource Type:: Masters Thesis
Full Text:: an old field/forest edge on a northeastern United States deciduous forest understory community

Analysis of Betta splendens erythrophore responses to Bacillus cereus cultured in different media

Creator:: Austin, Melissa J.
Abstract:: Biological agents and their products commonly cause foodborne illnesses. In the United States it is estimated that there are over 76 million cases of foodborne illnesses each year, resulting in an economic loss of approximately $40 billion. These high figures demonstrate the need for bioassays that display a rapid and...
Resource Type:: Masters Thesis
Full Text:: is never identified. In the United States it is estimated that there are over 76 million cases of

ScholarsArchive@OSU

Implementation of an ultra-wideband transceiver for sensor applications

Effects of release from suppression on hydraulic architecture, photosynthetic capacity and functional wood characteristics in Douglas-fir and western hemlock

Degradation kinetics of taxol using mass spectroscopy

Four centuries of soil carbon and nitrogen change after severe fire in a Western Cascades forest landscape

Influences of clearcut logging on macroinvertebrates in perennial and intermittent headwaters of the Central Oregon Coast Range

Persistence of spatial distribution patterns of coastal cutthroat trout in a Cascade mountain stream

Climate-growth relationships of western juniper and ponderosa pine at the pine-woodland ecotone in southern Oregon

White-breasted nuthatch density and nesting ecology in oak woodlands of the Willamette Valley, Oregon

Patterns in understory vegetation communities across canopy gaps in young, Douglas-fir forests of western Oregon

Analysis of Betta splendens erythrophore responses to Bacillus cereus cultured in different media

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