Index Catalog // ScholarsArchive@OSU

Seasonal snowcover dynamics beneath boreal forest canopies

Creator:: Link, Timothy E.
Abstract:: The accurate simulation of snowpack deposition and ablation beneath forested areas is confounded by the fact that the vegetation canopy strongly affects the snow surface energy balance. The canopy alters the radiation balance of the snowcover, and reduces the wind speed at the snow surface. Data collected as part of...
Resource Type:: Masters Thesis
Full Text:: balance. Model outputs at all sites generally show good agreement with measured snow depths, indicating

Continuum mechanics methods applied to root growth and the penetration of soil by roots

Creator:: McCoy, Edward L.
Abstract:: The principles of continuum mechanics provide a consistent framework for the derivation of mathematical statements describing transport of water and solute, and growth in plant tissue. These derivations are based upon the explicit consideration of the tissue as a mathematical continuum composed of a cell wall matrix, water, and solute...
Resource Type:: Dissertation
Full Text:: balance approach. The overall mathematical expression of transport and deformation in plant tissue is

Non-spatial and spatial models for multi-host pathogen spread in competing species : applications to barley yellow dwarf virus and rinderpest

Creator:: Manore, Carrie Anna
Abstract:: Modeling and analyzing the combined effects of disease and population dynamics is important in understanding the effects of mechanisms such as pathogen transmission and direct competition between host species on the distribution and abundance of different species in an ecological community. Mathematical analysis of such models in a spatially explicit...
Resource Type:: Dissertation
Full Text:: mathematical modeling perspective. In particular, we formulate a model in which two species compete directly

Leaf resistance responses in selected conifers interpreted with a model simulating transpiration

Creator:: Running, Steven William
Abstract:: The resistance of a leaf to molecular gaseous diffusion is an important physiological response. Control of leaf resistance enables a plant to control its transpired water loss and regulates photosynthesis. Four study sites representing a gradient in available moisture and evaporative demand, were chosen in western Oregon for the study...
Resource Type:: Masters Thesis

Modeling water uptake on coniferous forest Oregon watershed 10 synthesis

Creator:: Waring, Richard H., Running, S. W., Holbo, Harold Richard, Kline, J. R., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: In the Coniferous Forest Biome, many of the understory as well as dominant plants are evergreen and thus water uptake is a year around process. The flow of water from the soil through plants to the atmosphere affects the entire forest ecosystem. As water is evaporated, it absorbs heat and...
Resource Type:: Technical Report
Full Text:: equation is simply PMS = 30 -140* AWF. An example of the relationship coupling root zone water to plant

Modeling protein structure at atomic resolution

Creator:: Berkholz, Donald S.
Abstract:: This thesis includes three studies involving different aspects of modeling protein structure. The first study illustrates the levels of insight available from atomic-resolution protein structures. The second study derives general trends of protein geometry from atomic-resolution structures and shows their implications for modeling. The third study creates a model of...
Resource Type:: Dissertation
Full Text:: structures and shows their implications for modeling. The third study creates a model of a protein and uses

Modeling Elevation-Dependent Snow Sensitivity to Climate Warming in the Data Sparse Eastern Oregon Cascades

Creator:: Cooper, Matthew Guy
Abstract:: In the mountains of the Western US, shifts in the timing and magnitude of snow water equivalent (SWE) over the past century are well documented and attributed to climate warming, but the magnitude of sensitivity depends on elevation. We modeled the spatial distribution of SWE and its sensitivity to climate...
Resource Type:: Masters Thesis
Full Text:: m spatial scale data used as input to the snow model. Model parameters that control empirical

Model for uptake of organic chemicals by plants

Creator:: Boersma, L., Lindstrom, F. T., and McFarlane, Craig, 1936-
Abstract:: Uptake, in-plant transport, and local accumulation of organic chemicals by plants are influenced by plant characteristics, properties of the chemical and the soil, and by environmental conditions. Evaluations of plant contamination required by regulatory agencies cannot be made experimentally for the many thousands of xenobiotic chemicals in existence or being...
Resource Type:: Technical Report
Full Text:: tio n: htt p:/ /ex ten sio n.o reg on sta te. ed u/c ata log MATHEMATICAL MODEL OF PLANT

Stability analysis of dynamic heat transfer

Creator:: Luo, Shyr Tung
Abstract:: The stability analysis for a heated tube system is an important safety feature of a nuclear power plant. Although the system theory is well established for linear systems described by ordinary differential equations, there is still a shortage of theory dealing with a distributed system, which is described by partial...
Resource Type:: Dissertation
Full Text:: . IMPLEMENTATION 72 4.1 MATHEMATICAL MODEL FOR THE REACTOR HEAT TRANSFER 73 4.2 SUBCOOLED FLUID 76 4.3 TWO

Off-design analysis and control of a wood-fired combined-cycle power plant

Creator:: Brawn, Robert Charles
Abstract:: This report presents the off-design analysis of various wood-fired combined-cycle power plants using a computer model to simulate plant performance. The combined-cycle systems investigated are characterized by having a woodfueled combustor, an indirect-fired gas turbine, and a Rankine steam cycle. This work was conducted as part of a larger biomass...
Resource Type:: Masters Thesis
Full Text:: . COMPUTER MODELS A computer model was developed to simulate the wood- fired combined cycle power plant

ScholarsArchive@OSU

Seasonal snowcover dynamics beneath boreal forest canopies

Continuum mechanics methods applied to root growth and the penetration of soil by roots

Non-spatial and spatial models for multi-host pathogen spread in competing species : applications to barley yellow dwarf virus and rinderpest

Leaf resistance responses in selected conifers interpreted with a model simulating transpiration

Modeling water uptake on coniferous forest Oregon watershed 10 synthesis

Modeling protein structure at atomic resolution

Modeling Elevation-Dependent Snow Sensitivity to Climate Warming in the Data Sparse Eastern Oregon Cascades

Model for uptake of organic chemicals by plants

Stability analysis of dynamic heat transfer

Off-design analysis and control of a wood-fired combined-cycle power plant

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