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Determination and application of ³²p specific activity in Columbia River fish

Creator:: Romberg, Gerald Patrick
Resource Type:: Masters Thesis
Full Text:: . Renfro and Dr. William 0. Forster, I express my appreciation and thanks for their help, encouragement

Determination of ⁶⁵Zn specific activity in various tissues of the California sea mussel, Mytilus californianus

Creator:: Larsen, Ingvar Lauren
Abstract:: The specific activity of ⁶⁵Zn (nanocuries ⁶⁵Zn/g total Zn) was determined in various organs of the common coastal mussel, Mytilus californianus Conrad, collected from six locations along the Pacific Coast. These organs included the gills, mantle, foot, reproductive organs, adductor muscle, and viscera. After ashing and dissolving with nitric acid...
Resource Type:: Masters Thesis
Full Text:: sincere thanks to Dr. William Renfro who became my major professor and offered guidance and

Non-biological uptake of zinc-65 from a marine algal nutrient medium

Creator:: Tomlinson, Richard Douglas
Abstract:: The nature and magnitude of experimental errors due to ⁶⁵Zn adsorption by inorganic surfaces was examined in a laboratory system designed to measure ⁶⁵Zn uptake by marine phytoplankton. In the pH range, 6.3±.1 to 7.5±.1, a precipitate formed in the algal nutrient medium selected for the system. To this seawater-base...
Resource Type:: Masters Thesis
Full Text:: possible. Dr. William C. Renfro, my major professor, provided invaluable advice and demonstrated

Zinc-65 uptake by a bacterium isolated from Alder Slough, Columbia River Estuary

Creator:: Tonjes, Stephen Dodd
Abstract:: Bacteria were isolated from water at Alder Slough, Oregon. Of 15 isolates grown successfully in the medium employed, 100% showed measurable uptake of Zn-65. A growth curve was established for one isolate, a gram-negative rod designated AS-1. Increasing Zn-65 uptake was found generally to correspond with increasing growth of AS-1....
Resource Type:: Masters Thesis
Full Text:: Privacy Redacted for Privacy Redacted for Privacy ACKNOWLEDGEMENT I am grateful to Dr. William

Antimony-124 in the lower Columbia River

Creator:: Pope, Stephen Van Wyck
Resource Type:: Masters Thesis
Full Text:: - 124 IN THE LOWER COLUMBIA RIVER Abstract approved: Dr. William 0. Forster Dr. William C. Renfro

Iron-55 in Pacific Ocean organisms

Creator:: Jennings, Charles David
Resource Type:: Dissertation
Full Text:: in this study. I am grateful to Dr. William Renfro, my wife, Judy, and my father, Professor Charles

Mathematical modeling of selection and crossbreeding in beef cattle

Creator:: Clarke, Stephen Emil
Abstract:: A mathematical model was developed to simulate alternative selection and crossbreeding strategies for commercial beef production. Biological and economic constraints were selected to represent typical pasture production of calves in the Northwest. The crossbreeding study evaluated the relative economic efficiency of different 1) mating plans when sire breeds of several...
Resource Type:: Dissertation
Full Text:: CROSSBREEDING IN BEEF CATTLE Abstract approved: Redacted for privacy William D. Hohenboken Redacted for

Landscape composition around northern spotted owl nests, central Cascade Mountains, Oregon

Creator:: Swindle, Keith A.
Abstract:: This study describes the composition of forest landscapes surrounding northern spotted owl (Strix occidentalis caurina) nests in the central Cascade Mountains of Oregon. I compared forest composition around 126 owl nests in 70 pair territories with forest composition around 119 points drawn randomly from all terrestrial cover-types, and around 104...
Resource Type:: Masters Thesis
Full Text:: Meslow - William J. Ripple This study describes the composition of forest landscapes surrounding

Radioecology of ⁶⁵Zn in an arm of the Columbia River Estuary

Creator:: Renfro, William Charles
Abstract:: Levels of ⁶⁵Zn in water, sediments, plants, and animals in Alder Slough, a small ecosystem in the Columbia River Estuary, were determined periodically during a one year period. Concentrations of total Zn in organisms were also measured to permit computation of specific activities (μCi⁶⁵Zn/g total Zn). Temporal fluctuations in the...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE THESIS OF William Charles Renfro for the Ph

Vertical distribution of radioactivity in the Columbia River estuary

Creator:: Hanson, Peter James
Abstract:: In situ salinity, turbidity and temperature were measured at discrete depths and water samples for radioanalysis were simultaneously collected in the Columbia River Estuary using a specially designed instrument package. Particulate radioactivity was concentrated by filtration and the dissolved radioactivity by evaporation or ferric oxide bulk precipitation. Radioanalysis was by...
Resource Type:: Masters Thesis
Full Text:: , Norman F. Kujala, Stevens Okura, Alan E. Ramm and William C. Renfro for their cooperation and assistance

ScholarsArchive@OSU

Determination and application of ³²p specific activity in Columbia River fish

Determination of ⁶⁵Zn specific activity in various tissues of the California sea mussel, Mytilus californianus

Non-biological uptake of zinc-65 from a marine algal nutrient medium

Zinc-65 uptake by a bacterium isolated from Alder Slough, Columbia River Estuary

Antimony-124 in the lower Columbia River

Iron-55 in Pacific Ocean organisms

Mathematical modeling of selection and crossbreeding in beef cattle

Landscape composition around northern spotted owl nests, central Cascade Mountains, Oregon

Radioecology of ⁶⁵Zn in an arm of the Columbia River Estuary

Vertical distribution of radioactivity in the Columbia River estuary

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