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  • Numerical simulation of wood drying

    Creator:
    Berberovic, Adin
    Abstract:
    A mathematical and then a numerical model were developed for simulating a convective batch lumber drying process. The model incorporates mass and heat transfer relationships within the lumber stack, as well as thermodynamic properties of the wood and drying air. It takes into account a change of air properties along...
    Resource Type:
    Masters Thesis
    Full Text:
    rate function for hemlock which will be used in the mathematical model to describe how fast moisture

  • Interactions between microbial dynamics and transport processes in soils

    Creator:
    Rockhold, Mark L.
    Abstract:
    An experimental and numerical modeling investigation was conducted to study interactions between microbial dynamics and transport processes in variably saturated porous media. These interactions are important in a variety of applied problems such as water and wastewater treatment, bioremediation, and oil-field recovery operations. These processes and interactions also have great...
    Resource Type:
    Dissertation
    Full Text:
    clay soil (model parameters from Leij et al.. 1999), clean 40/50 Accusand®, and repacked. biomass

  • The impact of wood variability on the drying rate at different moisture content levels

    Creator:
    Berberović, Adin
    Abstract:
    Variability in wood properties causes boards within a stack of lumber to dry at different rates and reach different moisture content levels after drying is completed. The consequence is that the boards will have properties that differ from ones that were intended to be achieved by the drying process. The...
    Resource Type:
    Dissertation
    Full Text:
    1984)….…………………………… 2.2.4.5 Central plane moisture content for homogeneous model using low

  • Modelling root reinforcement in shallow forest soils

    Creator:
    Skaugset, Arne E.
    Abstract:
    A hypothesis used to explain the relationship between timber harvesting and landslides is that tree roots add mechanical support to soil, thus increasing soil strength. Upon harvest, the tree roots decay which reduces soil strength and increases the risk of management -induced landslides. The technical literature does not adequately support...
    Resource Type:
    Dissertation

  • Evaluation of the Performance of Lateral Spread Displacement Empirical Models for Subduction Zone Earthquake Case Histories

    Creator:
    Bunn, Michael
    Abstract:
    Lateral spread is a pervasive type of liquefaction-induced ground failure that occurs on gentle slopes or near free-faces, such as river channels. Resulting horizontal displacements can reach up to several meters, and can be considerably damaging to foundations, bridges, roadways, pipelines, etc. In the 1990s, Bartlett and Youd (1992a, 1995)...
    Resource Type:
    Masters Thesis
    Full Text:
    , Bartlett and Youd (1992a, 1995) introduced an empirical model for predicting liquefaction-induced

  • Tsunami-induced Soil Instability

    Creator:
    Fischer, Rachael Marie
    Abstract:
    Recent tsunami field surveys from the 2011 Great East Japan Earthquake and Tsunami have recorded numerous examples of tsunami-induced soil instability: significant scour around foundations, foundation failure of piles, and other damage caused by liquefaction. From the observations of soil instability leading to the failure of critical coastal structures, it...
    Resource Type:
    Masters Thesis
    Full Text:
    interest were selected from the model for evaluation of soil instability and sediment transport potential

  • A comparison of deterministic and probabilistic radiation dose assessments at three fictitious ¹³⁷Cs contaminated sites in California, Colorado, and Florida

    Creator:
    Brock, Terry A.
    Abstract:
    Two methods of radiation dose assessment were evaluated for the Cs-137 in soil ⇒ leafy vegetable ⇒ human consumption exposure pathway at three fictitious contaminated sites in California, Colorado, and Florida. An annual dose equation was developed and per USEPA risk assessment guidelines, traditional, single point annual dose estimates were...
    Resource Type:
    Masters Thesis
    Full Text:
    assessment were evaluated for the Cs-137 in soil = leafy vegetable human consumption exposure pathway at

  • Forest Soils and Topography : Decoding the Influence of Physical Site Characteristics on Soil Water and Forest Productivity in Oregon's Coast Ranges

    Creator:
    Rodman, Henry
    Abstract:
    Forest soils and topography have long been known to influence forest productivity in complex terrain such as Oregon’s Coast Ranges. Incorporating physical site characteristics into predictions of forest growth and yield, however, has been problematic because of the high spatial variability of soil properties and the challenges associated with representing...
    Resource Type:
    Masters Thesis
    Full Text:
    . . . . . . 34 3.2 Parameter estimates for model 3.3 predicting relative soil moisture availability as a