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  • Height-related trends in structure and function of Douglas-fir foliage

    Creator:
    Woodruff, David R.
    Abstract:
    This dissertation investigated the impacts of tree height upon a range of physiological and structural characteristics of Douglas-fir foliage; relationships between structural and functional trends with height; and compensatory mechanisms that mitigate height-related growth constraints. Height-related trends in foliar physiological and anatomical characteristics were examined both within trees as well...
    Resource Type:
    Dissertation
    Full Text:
    THE DISSERTATION OF David R. Woodruff for the degree of Doctor of Philosophy in Forest Science

  • The effects of stand density on the growth and microclimate of young Douglas-fir stands

    Creator:
    Woodruff, David R.
    Abstract:
    My objectives were to investigate the correlation of height and diameter growth in young Douglas-fir (Pseudotsuga menziesii) plantations with stand density, and to determine the effects of stand density on the canopy boundary layer conductance (g[subscript]ac) and microclimate characteristics of young Douglas-fir plantations. I measured annual height (h) and diameter...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF David R. Woodruff for the

  • Multi-temporal LiDAR Analysis of Landscape Fire Effects in Southwestern Oregon

    Creator:
    Hoe, Michael
    Abstract:
    Quantitative assessments of post-fire effects are key to improving our understanding of ecosystem resilience. While remote sensing technology has allowed us to assess post-fire landscape effects, we are often limited by the lack of information related to pre-fire forest attributes. As a result, our ability to interpret fire effects in...
    Resource Type:
    Masters Thesis
    Full Text:
    , Jon Buzawa, and Amanda Gray for a great field season and high quality work; David Bell, David

  • Proof of Concept for a Three-Dimensional Molded Core Wood-Strand Sandwich Panel

    Creator:
    Way, Daniel
    Abstract:
    Sandwich composites are typically produced from two high strength facings bonded to a lower strength, lightweight core. Sandwich design has proven to be efficient for applications demanding high strength and low weight. Wood-based sandwich composites have been largely limited to non-structural applications with the exception of structural insulated panels and...
    Resource Type:
    Masters Thesis
    Full Text:
    the knowledge they have passed on. The time of my other committee members, Kenny Martin and David

  • Modeling the fixed bed drying characteristics of biomass particles

    Creator:
    Yang, Hai
    Abstract:
    The fixed bed drying of western hemlock and Douglas-fir biomass particles at temperatures ranging from 50°C to 200°C and air velocities from 0.3 to 0.9 m/s was investigated. The objectives were to describe the drying characteristics of the particles, fit a model for thin-layer drying, and develop and test a...
    Resource Type:
    Masters Thesis
    Full Text:
    and Dr. David Woodruff, for their encouragement and help. Gratitude must be expressed to my

  • A Sense of “Shared Responsibility” for Teaching English Learners: Connections Between Teacher Experience, Administrator Support, Co-planning and Co-teaching

    Creator:
    Woodruff, Karrie S.
    Abstract:
    Co-teaching and collaboration are an increasingly popular service model for English as a second language (ESL). In this model, the language specialist, sometimes called the ESL teacher, works together with a content teacher, each using their respective expertise to meet the needs of students who are identified as English learners...
    Resource Type:
    Dissertation
    Full Text:
    Karrie S. Woodruff for the degree of Doctor of Philosophy in Education presented on May 18, 2023. Title

  • Practical modeling for load paths in a realistic, light-frame wood house

    Creator:
    Pfretzschner, Kathryn S.
    Abstract:
    The objective of this study was to develop and validate practical modeling methods for investigating load paths and system behavior in a realistic, light-frame wood structure. The modeling methods were validated against full-scale tests on subassemblies and an L-shaped house. The model of the L-shaped house was then modified and...
    Resource Type:
    Masters Thesis

  • Parker, David Bill.pdf

    Creator:
    Parker, David Bill
    Abstract:
    Data from the southern Cascade Mountains of Oregon has been collected for application in computer analysis of snowfields. Vegetation type, canopy cover, slope, aspect, insolation, and snowfield ground truth delineation are given consideration. In addition, a procedure for transferral of data onto Landsat imagery was derived.
    Full Text:
    EXTENT; SOUTHERN CASCADE MOUNTAINS, OREGON by DAVID BILL PARKER A RESE;RCH PAPER suiitted to THE

  • Ji[David]XiuleiChemistryAmbientHydrolysisDeposition.pdf

    Creator:
    Wang, Xingfeng, Raju, Vadivukarasi, Luo, Wei, Wang, Bao, Stickle, William F., and Ji, Xiulei
    Abstract:
    Despite the considerable advances of deposition technologies, it remains a significant challenge to form conformal deposition on surface of nanoporous carbons. Here, we introduce a new ambient hydrolysis deposition method that employs and controls pre-adsorbed water vapor on nanoporous carbons to define the deposition of TiO₂. We converted the deposited...
    Full Text:
    Pat., 6893550, 2005. 7 V. P. Menon, C. R. Martin, Anal. Chem. 1995, 67, 1920-1928. 8 M

  • Ji[David]XiuleiChemistrySuperiorCathodeSodium.pdf

    Creator:
    Raju, Vadivukarasi, Rains, Jordan, Gates, Cooper, Luo, Wei, Wang, Xingfeng, Stickle, William F., Stucky, Galen D., and Ji, Xiulei
    Abstract:
    We, for the first time, demonstrate that orthorhombic V₂O₅ can exhibit superior electrochemical performance in sodium ion batteries when uniformly coated inside nanoporous carbon. The encapsulated V₂O₅ shows a specific capacity as high as 276 mAh/g, while the whole nanocomposite exhibits a capacity of 170 mAh/g. The V₂O₅/C composite was...
    Full Text:
    . [8] Berthelot, R.; Carlier, D.; Delmas, C. Nat. Mater. 2011, 10, 74-80. [9] Xia, X.; Dahn, J. R