Index Catalog // ScholarsArchive@OSU

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

Creator:: Kollmorgen, James Frederick
Abstract:: The teliospore of Tilletia caries germinates to produce a promycelium with a whorl of primary sporidia at its tip. The time between emergence of the promycelium and the development of primary sporidia averaged 2.3 h. Fusion between compatible sporidia occurred within an additional 3.8 h. Primary sporidia appeared to be...
Resource Type:: Dissertation
Full Text:: thanks is also extended to the other members of my graduate committee: Drs. M. H. Chaplin, W. M. Hess, R

The distribution, growth habits, and control of German velvetgrass (Holcus mollis L.) in Western Oregon

Creator:: Lee, William O., 1911-
Abstract:: A study was conducted on German velvetgrass (Holcus mollis L.), a weedy, rhizomateous perennial grass introduced in the United States in relatively recent years, The purpose of this study was to learn more about its distribution, growth habits, and control under conditions found in Western Oregon. German velvetgrass infestations of...
Resource Type:: Dissertation
Full Text:: Graduate cornrnittee, Drs. T. M. ching, w. w. chilcote, and. v. H. Freed for help and suggestions

Stratigraphy and genesis of soils from volcanic ash in the Blue Mountains of Eastern Oregon

Creator:: Rai, Dhanpat, 1943-
Abstract:: Investigations were conducted to (1) determine the original pattern of deposition and thickness of ash in the Ochoco and Blue Mountain areas of Oregon, (2) determine if discontinuities exist in the parent material of these soils, (3) determine the degree of mixing of ash with other materials and evaluate reworking...
Resource Type:: Dissertation
Full Text:: - tinuing my formal education., and to Drs. G. H. Simonson, E. M. Taylor and W. W. Chilcote for serving on

The role of ethanol and certain ethyl esters in the fruity flavor defect of Cheddar cheese

Creator:: Bills, Donald D.
Abstract:: During the course of ripening, Cheddar cheese frequently develops a flavor defect described as fruity. Recent work has indicated that the use of certain starter cultures ultimately results in the development of the defect as the cheese ages. The flavor compounds responsible for the defect, however, have not been elaborated....
Resource Type:: Dissertation
Full Text:: would also like to express my gratitude to the members of my Program Committee: Dr. M. W

Improving Region-Scale Landslide Inventory and Susceptibility Mapping

Creator:: Bunn, Michael D.
Abstract:: Landslides are a natural hazard that have major societal, economic, and environmental impacts. The understanding of landslides begins with the observation that they are a spatial problem. Spatial relationships have historically been explored with maps, and landslides are no different. Such maps range in focus from inventory maps, which identify...
Resource Type:: Dissertation
Full Text:: landslide susceptibility maps, which built physical models (Burns and Mickelson, 2016; Daniel M. Hess et

Expectations of standard normed, basic normed and non-normed counselors in Oregon's secondary schools concerning counselor tasks

Creator:: Lindley, Raymond Earl
Abstract:: The purpose of this study was to examine how three groups of counselors 1n Oregon's secondary schools viewed the issue of what tasks should be performed by the Oregon secondary school counselor. The three groups surveyed were: sixty-three counselors who have standard norms, sixty-six counselors who have basic norms, and...
Resource Type:: Dissertation
Full Text:: advice and to the remaining committee members for their assistance, Dr. Lester M. Beals and Dr. Robert

β-lactoglubin adsorption equilibrium and kinetics at silanized silica surfaces

Creator:: Krisdhasima, Viwat
Abstract:: The adsorption equilibrium and kinetic behavior exhibited by β-lactoglobulin at silanized silicon surfaces of varying hydrophobicity were examined using ellipsometry. Adsorption equilibrium results were used to construct adsorption isotherms; the adsorbed mass of β-lactoglobulin was observed to increase with increasing surface hydrophobicity, within a defined range of hydrophobicity. Adsorption kinetics...
Resource Type:: Dissertation
Full Text:: equation (3.1.14) k1 Adsorption rate constant, L mg4min4 k4 Desorption rate constant, min-1 M Molecular

Influence of chelating agents on genetic recombination of Zea mays L.

Creator:: Ihrke, Charles Albert
Abstract:: Crossover frequencies for seven selected regions on five chromosomes of maize were measured to ascertain the effect of chelating agents on recombination. Ethylenediamine tetraacetic acid, EDTA, and dimethyl sulfoxide, DMSO, were used in three concentrations singly, and in all combinations. Plants heterozygous for for linked genes governing seed and seedling...
Resource Type:: Dissertation
Full Text:: assistance. I wish to thank Dr. Ralph Bogart, Dr. W. W. Chilcote, Dr. W. A. Frazier, and Professor D. M

Orb Web Vibrations: Modeling, Localization, and Measurement

Creator:: Otto, Andrew W.
Abstract:: The orb web is a multipurpose structure---serving as a home for its inhabitant spider, as a prey capture device, and as a physical extension of the spider’s sensing abilities. Biologists are particularly interested in the spider’s ability to locate prey trapped in its web by sensing the vibrations induced from...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Andrew W. Otto for the

Evolutionary Insights into Cnidarian-Dinoflagellate Symbiosis from Natural Variation in Aiptasia Sea Anemones

Creator:: Bellis, Emily S.
Abstract:: Mutualistic associations between corals and symbiotic microalgae of the genus Symbiodium power tropical reef ecosystems, hotspots of marine biodiversity that buffer coastlines, support tourism- and fisheries-based economies, and offer untapped potential for discovery of novel pharmaceutical compounds. However, reef ecosystems are declining at an alarming rate, in large part due...
Resource Type:: Dissertation

ScholarsArchive@OSU

Morphology, ultrastructure and mating of sporidia of a wheat-bunt fungus, Tilletia caries (DC.) Tul.

The distribution, growth habits, and control of German velvetgrass (Holcus mollis L.) in Western Oregon

Stratigraphy and genesis of soils from volcanic ash in the Blue Mountains of Eastern Oregon

The role of ethanol and certain ethyl esters in the fruity flavor defect of Cheddar cheese

Improving Region-Scale Landslide Inventory and Susceptibility Mapping

Expectations of standard normed, basic normed and non-normed counselors in Oregon's secondary schools concerning counselor tasks

β-lactoglubin adsorption equilibrium and kinetics at silanized silica surfaces

Influence of chelating agents on genetic recombination of Zea mays L.

Orb Web Vibrations: Modeling, Localization, and Measurement

Evolutionary Insights into Cnidarian-Dinoflagellate Symbiosis from Natural Variation in Aiptasia Sea Anemones

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