Sites in need of restoration typically have one or more environmental factors that limit seedling establishment; identifying ecophysiological responses to environmental stressors can be advantageous in growing seedlings able to overcome such constraints on survival. To maximize survival after outplanting, seedlings should be grown in a manner that considers both...
The purpose of this study is to investigate the relative performance of compact ionization chambers as it changes based on the speed of detector motion and collection volume. To quantify changes, multiple scans were made with each of a selection of compact chambers and repeated varying detector speed. Each scan...
In 2016, the state of Oregon passed landmark legislation that doubles the state’s Renewable Portfolio Standard and eliminates the use of coal-fired electricity for the state’s two major electric utilities by 2030. The legislation was the first of its kind in the country to outright ban the use of a...
The Oregon Department of Transportation is responsible for many steel deck truss bridges containing connection details that are fatigue prone. A typical bridge, the Winchester Bridge in Roseburg, Oregon, was analyzed to assess the loading conditions, stress levels, and fatigue life of the connection details. The analysis included linear-elastic beam...
A 2-year trial was conducted at Oregon State University's Hermiston Agricultural Research and
Extension Center to examine the effects of spunbonded row cover and supplemental calcium fertilization
on blossom-end rot in two varieties of bell pepper. Blossom-end rot is a common cause of bell pepper yield
losses, especially at the...
A study was undertaken to determine, by
methods and equipment, the variations between
of sampling, preserving, and testing milk for fat during the various seasons of the year, and to try and solve the problem whereby the sampling, preserving, and testing of milk for fat at milk plants could be...
The literature available on the silica content of herbaceous biomass, and its relative mobility in leaching/extraction systems, includes studies that have employed several different methods for silica quantification. This makes comparison of the data difficult. The objective of this thesis research was to determine the quantitative relationships between the measured...
Daily evaporative flux and meteorological data from three sites were
collected and analyzed. Analysis included evaluation of several
reference evapotranspiration estimating methods which were theoretically
based on distinct physical laws. The estimating methods included pan
evaporation, energy-based Priestly-Taylor, and combination methods with
and without biological adjustments. The data set represented...
Under today's environmental conditions and with the increasing worldwide competition for water, errors in irrigation management decisions can be costly. Therefore, providing both accurate evapotranspiration estimation on a daily basis and estimation of the magnitude of error associated with this estimate is vital for informed water management decisions that allow...
This thesis offers a theory of queer materiality as a way of understanding the interconnectedness of freaks, ghosts, and madness in Victorian culture, and how these elements coalesce in Victorian literature to destabilize the knowable materiality of normative social structures and forms of embodiment, leading to the production of queer...