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Filtering by: Committee Member Denison, William Remove constraint Committee Member: Denison, William Degree Level Doctoral Remove constraint Degree Level: Doctoral

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  • Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

    Creator:
    Alsheikh, Abdulmagid M.
    Abstract:
    Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...
    Resource Type:
    Dissertation
    Full Text:
    . William Denison, William Chilcote and Robert Linderman for their guidance and support, and for serving

  • Graphing calculators in college calculus : an examination of teachers' conceptions and instructional practice

    Creator:
    Barton, Susan Dale
    Abstract:
    The study examined classroom instructional practices and teacher's professed conceptions about teaching and learning college calculus in relationship to the implementation of scientific-programmable-graphics (SPG) calculators. The study occurred at a university not affiliated with any reform project. The participants were not the catalysts seeking to implement calculus reform, but expressed...
    Resource Type:
    Dissertation
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    committee, Dr. William Denison, Dr. Thomas Dick, Dr. Dianne Erickson, Dr. Margaret Niess, and Dr. David

  • Soil fungal hyphal dynamics and seasonal hypogeous sporocarp production in western Oregon Douglas-fir forests

    Creator:
    Hunt, Gary, 1945-
    Abstract:
    Total length and biomass of fungal mycelium in the soil of a young Douglas-fir stand in the central Oregon Coast Range were estimated over 27 months with the agar-film technique. In a second study, phenology and taxonomy of hypogeous (belowground) sporocarps were studied over 32 months in a nearby, young...
    Resource Type:
    Dissertation
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    committee for their guidance and advice: Drs. William Denison, William Chilcote, David Perry, Kermit

  • RFLP analyses of interspecific hybrids of Phaseolus

    Creator:
    Kuo, Mei
    Abstract:
    Gene transfer via interspecific hybridization within Phaseolus has been limited by abnormal hybrid development and the rapid loss of hybridity in subsequent generations. The most advanced embryo development occurs in P. vulgaris x P. coccineus where mature seeds form. However, the reciprocal cross still results in abnormal embryos unable to...
    Resource Type:
    Dissertation
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    . My sincere appreciation is extended to Drs. William Denison, Steve Knapp, William Proebsting, Steve

  • Responses of algal populations to parasitism by Aphelidium chlorococcarum and chytrids in an Oregon sewage lagoon

    Creator:
    Woods, Wendy W.
    Abstract:
    The abundance of algal species and their parasites was monitored weekly for two years in a sewage lagoon at the Corvallis Airport, Oregon. During the cooler months, Euglena species were dominant followed by a Chlamydomonas assemblage in the spring and a predominantly Scenedesmus assemblage in the summer and fall. Parasites...
    Resource Type:
    Dissertation
    Full Text:
    . Thanks also to the other members of my committee: Peter Bottomley, William Denison, JoAnn Leong, Ralph

  • Studies to improve lactic acid bacterial starter cultures

    Creator:
    Khosravi, Lewa
    Abstract:
    Three commercial sausage starter cultures were grown in an internal-pH-controlled medium (PHASE 4) and in a soluble phosphate-buffered medium. The cultures were tested by comparing viable counts before and after freezing at -40 C or freeze-drying and subsequent storage for 3 months in the frozen or dried state. Strains varied...
    Resource Type:
    Dissertation
    Full Text:
    . Stephen Kaattari, Prof. Floyd W. Bodyfelt, Dr. Donald E. Mattson , Dr. William C. Denison and Dr

  • The relationship between self-concept and school attendance

    Creator:
    Ogard, Ernest Maynard
    Abstract:
    The purpose of this study was to seek evidence which might lead to the development of more effective ways of dealing with the problem of failure to attend school. Concept of self has long been considered worthy of consideration in evaluating behavior. It is known that significant experiences in life...
    Resource Type:
    Dissertation
    Full Text:
    the Industrial Education Department; Dr. William C. Denison, Associate Professor of Botany and

  • A numerical study of solid fuel combustion in a moving bed

    Creator:
    Ko, Daekwun
    Abstract:
    Coal continues to be burned by direct combustion in packed or moving bed in small size domestic furnaces, medium size industrial furnaces, as well as small power stations. Recent stringent restrictions on exhaust emissions call for a better understanding of the process of combustion of coal in beds. The present...
    Resource Type:
    Dissertation
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    fascinating "world of combustion." I wish to thank to Professor Lorin R. Davis, Professor William C. Denison

  • Morphologic, molecular and antigenic characteristics of Bacteroides nodosus

    Creator:
    Gradin, Joseph Lloyd
    Resource Type:
    Dissertation
    Full Text:
    . Mattson, Dr. John A. Schmitz, Dr. Ramon J. Seidler, and Dr. William C. Denison, for their inspiration

  • A revision of the Macrocheles glaber species group (Acari: Macrochelidae) using phylogenetic systematics

    Creator:
    Walter, David Evans, 1950-
    Abstract:
    The Macrocheles glaber species group contains many of the common mites which are associated with the dung of domestic animals. Species in the glaber group have been investigated for their use as biological control agents of synanthropic flies. Over 10,000 slide-mounted specimens of Macrocheles in the OSU Acarology Collection and...
    Resource Type:
    Dissertation
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    . Thanks are also due to the remainder of my committee, Norm Anderson, Bill Denison, Tim Schowalter, and