Search Constraints

Start Over
Filtering by: Creator Still, C. Remove constraint Creator: Still, C. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

Search Results

  • Ecosystem Photosynthesis and Forest-Atmosphere Interactions Inferred from Carbonyl Sulfide

    Creator:
    Rastogi, Bharat
    Abstract:
    An increase in anthropogenic activities since the industrial revolution, primarily due to burning of fossil fuels and changes in land cover, has resulted in a steady increase in the global mean atmospheric CO2 concentrations. While there is unequivocal scientific evidence on global warming and its multidimensional impacts on natural and...
    Resource Type:
    Dissertation
    Full Text:
    , 121(21), 13,113-13,128. https://doi.org/10.1002/2016JD025437 Berkelhammer, M., Asaf, D., Still, C

  • Plants and their Environment: Assessing Canopy Microclimate and the Response of Trees to Environmental Stress in a Diversity of Forest Types

    Creator:
    Sibley, Adam M.
    Abstract:
    The topics in this dissertation are centered around the way that trees respond to environmental stress in the climates where they occur. Though forests across the planet are expected to experience change in local climate due to historic and ongoing anthropogenic greenhouse gas emissions, the effects of climate change will...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Frederick C. Meinzer, Christopher J. Still The topics in this

  • Differences in Evolutionary History and Ploidy Type Shape the Interactions of Populus tremuloides Michx. with Climate

    Creator:
    Greer, Burke Thomas
    Abstract:
    Quaking aspen (Populus tremuloides Michx) is a species with high phenotypic plasticity and a broad distribution that, in the last decade, has experienced climate stress-induced mortality called Sudden Aspen Decline (SAD). In order to help mitigate the effects of SAD in the future, we need a better understanding of aspen’s...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Christopher J. Still Quaking aspen (Populus tremuloides Michx) is a species with high

  • The role of some of the Krebs Cycle reactions in the biosynthetic functions of Thiobacillus thioparus

    Creator:
    Still, Gerald G., 1933-
    Abstract:
    Aseptic radiorespirometry has been used to examine the utilization of external carbon sources by proliferating Thiobacillus thioparus cells. These studies reveal that glucose, galactose, mannose, fructose, ribose, DL-glutamate, and L-aspartate were not utilized by this chemoautotrophic organism. However, it has been shown that trace amounts of acetate, glycine, DL-serine, DL-alanine,...
    Resource Type:
    Dissertation
    Full Text:
    Biosynthetic Functions of Thiobacillus Thioparus AN ABSTRACT OF THE THESIS OF Gerald G. Still for the PhD

  • The ascorbic acid requirements of older adolescents

    Creator:
    Davey, Bessie Louise
    Abstract:
    The concentration of ascorbic acid in the plasma was determined on four levels of ascorbic acid intake for seven day periods in 1946-47 and on three levels of ascorbic acid intake for ten day periods in 1947-48. The subjects, eight girls and eight boys, were 16 to 19 year old...
    Resource Type:
    Dissertation
    Full Text:
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 C. Total Daily Intake of Ascorbic Acid and Daily Plasma Ascorbic Acid Values for Adolescent Boys

  • Some potential mechanisms for finely-tuned regulation of phospholipase C-β isozymes : studies of dimerization and phosphatidylinositol 3,4,5-trisphosphate activation

    Creator:
    Zhang, Yong
    Abstract:
    Phospholipase C-β (PLC-β) isozymes are key effectors in G protein-coupled signaling pathways. Prior research suggested that some isoforms of PLC-β may exist and function as dimers, but little is known about dimerization of PLC-β. Data from coimmunoprecipitation assays of differentially-tagged PLC-β constructs and sizeexclusion chromatography of native PLC-β support homodimerization...
    Resource Type:
    Dissertation
    Full Text:
    Phospholipase C-β Isozymes: Studies of Dimerization and Phosphatidylinositol 3,4,5-Trisphosphate Activation

  • Ascorbylation- the biological relevance of covalently bound ascorbic acid

    Creator:
    Kesinger, Nicholas G.
    Abstract:
    Ascorbic acid, or vitamin C, is well known as a co-factor for proline-hydroxylase and as an anti-oxidant. However, it is also capable of forming covalent bonds, particularly in the role of a nucleophile, henceforth termed 'ascorbylation'. The ascorbylation of electrophiles can occur under physiological conditions. Furthermore, there are a number...
    Resource Type:
    Dissertation
    Full Text:
    approved: ___________________________ Dr. Jan F. Stevens Ascorbic acid, or vitamin C, is well known

  • Regulation of phospholipase C-beta isozymes by calmodulin

    Creator:
    McCullar, Jennifer Star
    Abstract:
    Phospholipase C-Jβ (PLCβ) is an important effector enzyme in G-protein-coupled signaling pathways. Activation of PLCβ by Gα and Gβy subunits has been fairly well characterized, but little is known about other protein interactions that may also regulate PLCβ function. A yeast two-hybrid screen of a mouse brain cDNA library with...
    Resource Type:
    Dissertation
    Full Text:
    . Title: Regulation of Phoshoplipase C-beta isozymes by Calmodulin A Abstract approved: Theresa M. Filtz

  • Approaches for Characterizing Plant Physiological Responses to Environmental Stress

    Creator:
    Marias, Danielle E.
    Abstract:
    It is uncertain how predicted changes in climate will impact vegetation responses and plant species’ distributions because the physiological mechanisms underlying thresholds for damage are not well understood, and responses to stress vary by functional type and developmental stage. Thus, it is crucial to investigate physiological responses to heat and...
    Resource Type:
    Dissertation
    Full Text:
    : _____________________________________________________________________ Frederick C. Meinzer It is uncertain how predicted changes in climate will impact vegetation

  • Soil Moisture Encodes Plant Water Use Strategies

    Creator:
    Bassiouni, Maoya
    Abstract:
    Resilient water, food, and energy management strategies for an ever-growing population and changing environment depends on our understanding of water and carbon cycles from local to global scales. Fluxes of water and carbon are coupled by photosynthesis and plant transpiration cycles the largest fraction of terrestrial water from the land...
    Resource Type:
    Dissertation
    Full Text:
    toward Major Professors Chad Higgins and Stephen Good; committee members Christopher Still and