Search Constraints

Start Over
Filtering by: Advisor Shaw, David C. Remove constraint Advisor: Shaw, David C. Resource Type Dissertation Remove constraint Resource Type: Dissertation

Search Results

  • Canopy Ecology of Swiss Needle Cast in Young and Mature/Old-growth Douglas-fir (Pseudotsuga menziesii)

    Creator:
    Lan, Yung-Hsiang
    Abstract:
    Swiss needle cast (SNC) is a foliage disease of Douglas-fir caused by Nothophaeocryptopus gaeumannii, an Ascomycete fungus (Mycosphaerellaceae) that causes growth reductions in Douglas-fir plantations across the Pacific Northwest. Epidemiology of the fungus is generally well known in plantation trees, but the relationship between disease expression and foliage nutrition and...
    Resource Type:
    Dissertation
    Full Text:
    menziesii) Abstract approved: ______________________________________________________ David C

  • Identifying Differences in the Release of Bioactive Milk Peptides Across the Intestinal Tract Between Term and Preterm Infants

    Creator:
    Beverly, Robert L.
    Abstract:
    Premature birth interrupts the typical development of the human fetus, leaving the infant born with underdeveloped gastrointestinal and immune systems. Preterm infants have reduced stomach acidity, reduced digestive protease activity, more permeable intestinal membranes, impaired innate and adaptive immune response, and poor microbiome development. Due to these factors, preterm infants...
    Resource Type:
    Dissertation
    Full Text:
    : ________________________________________________________________________ David C. Dallas Premature birth interrupts the typical

  • Implications of Person Perception Across Development: The Reciprocal Influences of Problem Behavior and Facial Trustworthiness

    Creator:
    Alley, Zoe M.
    Abstract:
    People of all ages and ethnicities implicitly use others’ facial characteristics to evaluate their personalities. The field of person perception has identified several mechanisms through which one’s facial appearance may be associated with one’s behavior. For example, a person with an untrustworthy-looking face may elicit negative reactions from social partners,...
    Resource Type:
    Dissertation
    Full Text:
    Trustworthiness. Abstract approved: ______________________________________________________ David C. R

  • Estimation of the percentage of fat and lean in the edible portion of steer carcasses

    Creator:
    Kennick, Walter Herbert
    Resource Type:
    Dissertation
    Full Text:
    thanks to Dr. David c. Englmd for con t1nuous assistance and guidance through­ out the course of this

  • Selection for hybrid female reproductive performance in the mouse

    Creator:
    Chapman, Verne Merrill
    Abstract:
    The design of this study was suggested by the following observations: (1) the successful application of recurrent selection techniques in obtaining improvement of hybrid performance in corn and Drosophila, (2) the increased production realized by rotational crossbreeding, and (3) the expression of a relatively large degree of hybrid vigor in...
    Resource Type:
    Dissertation
    Full Text:
    and significant learning experiences and I would like to thank Dr. David C. England for the

  • The fatty acid composition of certain bovine tissues

    Creator:
    Thompson, Robert Charles, 1927-
    Abstract:
    In this study subcutaneous, inter- and intramuscular fats from 42 Hereford steers were analyzed for their fatty acid composition using gas-liquid chromatography. The same tissues were analyzed from one pair each of identical twins of Angus and Shorthorn breeding. Muscle and liver lipids from these latter four animals were fractionated...
    Resource Type:
    Dissertation
    Full Text:
    appreciation to Dr. David C. Church, Associate Professor of Animal Science, for his encouragement and

  • Effects of the insecticide dieldrin on benthic algae in laboratory streams

    Creator:
    Rose, Frederick Louis
    Abstract:
    The accumulation of dieldrin and its effects on species composition of benthic algal communities were studied in laboratory streams. Effects of dieldrin on photosynthetic and respiratory rates of the blue-green alga Phormidium retzii were determined using a Gilson Differential Respirometer. Dieldrin concentrations ranging from 0.05 to 7.0 ppb were maintained...
    Resource Type:
    Dissertation
    Full Text:
    ON BENTHIC ALGAE IN LABORATORY STREAMS Abstract approved: C. David McIntire The accumulation

  • Structure and productivity of marine benthic diatom communities in a laboratory model ecosystem

    Creator:
    Wulff, Barry Lee
    Abstract:
    Effects of light intensity, exposure to desiccation, reduced salinity, and thermal elevation on the functional and structural characteristics of marine benthic diatom communities were investigated in a laboratory model ecosystem and a respirometer chamber. Measurements of biomass (dry weight and ash-free dry weight) and chlorophyll a were made for each...
    Resource Type:
    Dissertation
    Full Text:
    for privacy Abstract approved: Dr. C. David McIntire Effects of light intensity, exposure to

  • The distribution of epiphytic diatoms in Yaquina Estuary, Oregon

    Creator:
    Main, Stephen Paul
    Abstract:
    Epiphytic diatom assemblages in the intertidal zone of Yaquina Bay and estuary were obtained from the following host macrophytes: Zostera marina, Fucus evanescens, and species of Enteromorpha, Polysiphonia, and Ulva. Samples were collected in September 1970 and in January and May 1971 from seven stations approximately evenly spaced between the...
    Resource Type:
    Dissertation
    Full Text:
    sincere appreciation to Dr. C. David McIntire, my major professor, for the opportunity to make this study

  • Combustion mechanisms in wood fired boilers

    Creator:
    Tuttle, Kenneth Lewis
    Abstract:
    A program of research has been established at Oregon State University to study wood residue combustion using an experimental spreader-stoker combustor. This research was conducted to increase the understanding of combustion occurring in wood fired boilers. Using Douglas Fir screened to 3/8-3/4 inches, two 4x4 factorial experiments were conducted varying...
    Resource Type:
    Dissertation
    Full Text:
    . David C. Junge, Final Ph.D. Dissertation Major Professor, John G. Mingle, Initial Ph.D. Program Major