Index Catalog // ScholarsArchive@OSU

The uptake and retention of cesium-134 in Microtus canicaudus Miller

Creator:: Lei, Wayne
Abstract:: A study was performed to assess the uptake and retention patterns of cesium-134 in the gray-tailed vole, Microtus canicaudus Miller. To furnish a realistic source of contaminated food for the voles, wheat seedlings were raised in hydroponic solutions to provide radiocesium labeled wheat clippings. The hydroponic system was designed to...
Resource Type:: Masters Thesis
Full Text:: canicaudus Miller AN ABSTRACT OF THE THESIS OF Wayne Lei for the degree of Master of Science in General

Perceived objectives and values of the forest service long term training program in systematic analysis

Creator:: Miller, Larry
Abstract:: Through its Policy Analysis section, the Forest Service has conducted a Long Term Training Program in Systematic Analysis (hereinafter called the Program) at Michigan State University, then later, jointly at both Michigan State and Oregon State University f or twenty years. Approximately one hundred graduates of the Program are r-ijW...
Resource Type:: Capstone Project

Factors influencing sex ratio in the estuarine copepod genus Eurytemora

Creator:: Vander Hart, Archie Lee
Abstract:: An investigation was conducted on factors influencing sex ratio in Eurytemora. Fifteen generations of brother/sister mating have produced family lines with a high proportion of either males or females of Eurytemora affinis. On this basis, a polygenic mechanism of sex determination is proposed for E. affinis. Laboratory experiments on the...
Resource Type:: Masters Thesis

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Creator:: Sheley, Roger Leslie
Abstract:: Cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea soistitialis L.) have invaded over 3 million ha of grasslands in the western U.S. Future management will require an understanding of the conditions, mechanisms, and processes which control species dominance, community dynamics, and desirable plant establishment in these alien dominated annual rangelands....
Resource Type:: Dissertation

Response of Artemisia tridentata ssp. wyomingensis and Stipa thurberiana to nitrogen amendments

Creator:: Wang, Chien-kuo
Abstract:: The effect of nitrogen on influencing the competitive balance between a shrub, Artemisia tridentata ssp. wyolningensis (ARTRW) and a perennial grass Stipa thurberiana (STTH) in a sagebrush steppe community was determined. Nitrogen levels were altered on 5x5 in plots by applying 4.5 gun2 of nitrogen in the form of ammonium...
Resource Type:: Masters Thesis

Relevance of U. S. graduate education in agriculture to careers in agricultural development of East African agriculturalists

Creator:: Acker, David G.
Abstract:: The purpose of this study, to examine the relevance of U.S. graduate education in agriculture to careers in agricultural development of East African agriculturalists, was examined in terms of three problems: Problem 1: Was U.S. graduate education in agriculture relevant to careers in agricultural development of East African agriculturalists? Problem...
Resource Type:: Dissertation
Full Text:: doctoral committee: Dr. Norm Goetze, Dr. Ann Messersmith, Dr. Stanley Miller, and Dr. Warren Suzuki

Response of Cuscuta campestris and Cuscuta indecora to glyphosate applied after attachment to alfalfa (Medicago sativa)

Creator:: Fessehaie, Rezene
Abstract:: The response to glyphosate [N-(phosphonomethyl) glycine] of two dodder species Cuscuta campestris Yuncker (field dodder) and Cuscuta indecora Chiosy (largeseed dodder) parasitizing alfalfa (Medicago sativa L.) was compared. In the absence of glyphosate, alfalfa was killed or severely injured by parasitism from uncontrolled dodder. Results of field experiments in which...
Resource Type:: Masters Thesis
Full Text:: (Medicago sativa). Abstract approved: Redacted for privacy Redacted for privacy Larry C Burrill jtan H

Simulation and field validation of heat and water flow during soil freezing and thawing

Creator:: Pikul, Joseph Lawrence
Abstract:: Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest. Potential loss of soil by erosion is high whenever a soil thaws from the surface creating a saturated soil overlying an impermeable frozen layer. Field studies were conducted to investigate the effect of surface residue on soil freezing. Residue...
Resource Type:: Dissertation
Full Text:: Larry Boersma Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest

Leaf elongation as a function of soil water potential and photoperiod

Creator:: Hodges, T.
Abstract:: Leaf elongation is a major indicator of plant growth. It is controlled by complex interactions of many factors including light intensity, photoperiod, water availability, atmospheric conditions, and plant water stress. In this study, the response of leaf elongation to length of photoperiod and to plant water stress as indicated by...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Larry Bfersma Leaf elongation is a major indicator of plant growth. It is controlled

Perturbed directional correlation in Ta-181

Creator:: Sommerfeldt, Raymond Walter
Abstract:: The effect of a static quadrupole interaction on the 133-482 Kev gamma-gamma angular correlation in Ta-181 has been studied by the delayed coincidence method. Using a source of Hf-181 in polycrystalline hafnium metal, the anisotropy was measured as a function of time between the formation and decay of the 482...
Resource Type:: Dissertation
Full Text:: are those of Lehmann and Miller on the 247 kilovolt, 80 nanosecond level in llì Cd (28, p. 298

ScholarsArchive@OSU

The uptake and retention of cesium-134 in Microtus canicaudus Miller

Perceived objectives and values of the forest service long term training program in systematic analysis

Factors influencing sex ratio in the estuarine copepod genus Eurytemora

Life-history, growth and interference of cheatgrass (Bromus tectorum L.) and yellow starthistle (Centaurea solstitialis L.)

Response of Artemisia tridentata ssp. wyomingensis and Stipa thurberiana to nitrogen amendments

Relevance of U. S. graduate education in agriculture to careers in agricultural development of East African agriculturalists

Response of Cuscuta campestris and Cuscuta indecora to glyphosate applied after attachment to alfalfa (Medicago sativa)

Simulation and field validation of heat and water flow during soil freezing and thawing

Leaf elongation as a function of soil water potential and photoperiod

Perturbed directional correlation in Ta-181

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