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ScholarsArchive at Oregon State University
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The historical function of fire in sagebrush steppe has been altered by 19th century
overgrazing, active fire suppression, annual grass invasion and encroachment of woody
species. The significance of fire to these systems is known, but research...
2015-04-28 (iso8601)
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In this thesis, I present a new method we developed to study low frequency (< 700 cm⁻¹) vibrational dynamics: Time-resolved third-harmonic generation (TRTHG) spectroscopy. Among a variety of vibrational spectroscopy techniques, TRTHG...
2015-05-27 (iso8601)
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A method for determining bandgap energy using diffuse reflection is presented. The method uses bifurcated fiber optic cables to measure the diffuse reflection of diffusely reflective materials. The absorption spectrum is extrapolated from the...
2015-05-26 (iso8601)
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Low-distortion architecture is widely used in wideband discrete-time switched-capacitor delta-sigma ADC design. However, it suffers from the power-hungry active adder and critical timing for quantization and dynamic element matching (DEM). To...
2015-05-22 (iso8601)
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The Cascade Volcanic Arc has been the subject of extensive study in the past due to its active volcanism and its proximity to metropolitan areas. The triangle formed by the volcanoes Mount Saint Helens, Mount Rainier, and Mount Adams is of...
2015-05-26 (iso8601)
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Aminal radical intermediates were generated by the method of radical translocation and reacted in C-C bond forming reactions with electronically deficient alkenes (Schiedler et al. Org. Lett. 2012, 14, 6092). Aminal radical intermediates can...
2015-04-30 (iso8601)
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Water-soluble quantum dots obtained through ligand exchange are widely applicable for biological imaging and marking, LEDs, and photovoltaics. Lipoic acid (LA) was reduced to dihydrolipoic acid (DHLA) using 365-nm soft UV light in a process known...
2015-05-14 (iso8601)
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Ocean circulation plays an integral part in a multitude of Earth's processes including the transfer of heat and nutrients across the globe. Additionally, its role in initiating and/or responding to global climate change is thought to be...
2015 (iso8601)
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Technology is constantly co-evolving with science to produce simple and effective tools that address the needs of researchers. Cost and time effective point-of-care devices are valuable for sample collection and analysis, particularly in medicine...
2015-05-27 (iso8601)
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Automation of computational chemistry, while only an engineering feat, has the potential to accelerating computational research be removing all by the science. The work in this thesis mainly discusses fundamental understanding of complex chemical...
2015-04-15 (iso8601)
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We computed band gaps of amorphous oxides within the In-Ga-Zn triad. These included ZnO, Ga2O3, In2O3, Ga2ZnO4, Ga2Zn8O11, In2ZnO4, InGaZnO4, and InGaO3. Comparing the computed band gap to experimental measurements, the results were promising with...
2015-05-29 (iso8601)
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Mental health is a hot topic of concern for many college students, educators, and mental health professionals. Three-quarters of serious mental illnesses present in individuals before the age of 24 (American College Health Association, 2012). This...
2015-05-27 (iso8601)
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Gene regulatory networks are commonly used for modeling biological processes and revealing underlying molecular mechanisms. The reconstruction of gene regulatory networks from observational data is a challenging task, especially considering the...
2013-10-30 (iso8601)
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Plutonium is currently used for nuclear energy production in the form of mixed-oxide (MOX) fuel in a once-through cycle. The spent fuel from these burnup cycles is then discarded as nuclear waste. MOX fuel burnup, however, transmutes some uranium...
2014-11-04 (iso8601)
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Students who believe that their intelligence is able to grow over time (malleable/ growth mindset) perform better on measures of academic success than students who believe that intelligence is a fixed trait that cannot be changed (fixed mindset;...
2015-04-23 (iso8601)
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We analyze some symmetries of the octonionic multiplication table, expressed
in terms of the Fano plane. In particular, we count how many ways the Fano
plane can be labeled as the octonionic multiplication table, all corresponding to
a specified...
2015-05-15 (iso8601)
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The consumption of cruciferous vegetables is associated with several health benefits, including cancer prevention. Many of these benefits are attributed to the phytochemical, sulforaphane (SFN), which is derived from cruciferous vegetables such as...
2015-05-27 (iso8601)
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Fungicide resistance has become an increasing problem in North American populations of Zymoseptoria tritici, the causal agent of septoria leaf blotch of wheat. The goal of this experiment was to determine whether Z. tritici’s resistance to one...
2015-05-29 (iso8601)
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This study explored the lived experiences of graduate students in masters-level academic programs who become pregnant, whether intended or otherwise, and the sources from which they received support in their efforts to balance their dual...
2015-04-20 (iso8601)
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This qualitative thesis explored the experiences of self-identified Master-level graduate students who worked four or more years in higher education before enrolling into a student affairs graduate program. The researcher utilized a sample of six...
2015-04-30 (iso8601)
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The role of A-site non-stoichiometry was investigated in lead-free piezoelectric ceramics based on compositions in the 1-x(Bi₀.₅Na₀.₅TiO₃)-xBaTiO₃ system near the morphotropic phase boundary where x = 0.055, 0.06 and 0.07. The samples were...
2015-04-07 (iso8601)
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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...
2015-05-01 (iso8601)
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Research universities in the United States recognize the importance of attracting
graduate students from around the world to make global collaborations possible and to
take advantage of the worldwide demand for higher education. Educational...
2015-05-14 (iso8601)
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As a result of a warming climate, subsequent declining snowpack, and a
century of fire suppression, forest fires are increasing across the western United
States. However, we still do not fully understand how forest fire effects snowpack
energy...
2015-05-06 (iso8601)
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