Search

Search Results

• 21. [Article] The isolation and Characterization of Novel Postsynaptic Antibodies for Danio Rerio

  67 pages. A THESIS Presented to the Department of Chemistry and Biochemistry and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor ...

  Citation × Citation Citation Abstract Copy Title: The isolation and Characterization of Novel Postsynaptic Antibodies for Danio Rerio Author: Kou, Yuqing Year: 2012 67 pages. A THESIS Presented to the Department of Chemistry and Biochemistry and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2012. Title: The isolation and Characterization of Novel Postsynaptic Antibodies for Danio Rerio Author: Kou, Yuqing Year: 2012 67 pages. A THESIS Presented to the Department of Chemistry and Biochemistry and the Clark Honors College of the University of Oregon in partial fulfillment of the requirements for degree of Bachelor of Science, Spring 2012. Close

• 22. [Article] Executive Summary: Preparing for Climate Change in the Klamath Basin of Southern Oregon and Northern California

  3 p.

  Citation × Citation Citation Abstract Copy Title: Executive Summary: Preparing for Climate Change in the Klamath Basin of Southern Oregon and Northern California Author: Climate Leadership Initiative, Barr, Brian R., Koopman, Marni E., Williams, Cindy Deacon, Doppelt, Bob, Hamilton, Roger, Vynne, Stacy, 1979- Year: 2010 3 p. Title: Executive Summary: Preparing for Climate Change in the Klamath Basin of Southern Oregon and Northern California Author: Climate Leadership Initiative, Barr, Brian R., Koopman, Marni E., Williams, Cindy Deacon, Doppelt, Bob, Hamilton, Roger, Vynne, Stacy, 1979- Year: 2010 3 p. Close

• 23. [Article] Preparing for Climate Change in the Klamath Basin

  iii, 36 p.

  Citation × Citation Citation Abstract Copy Title: Preparing for Climate Change in the Klamath Basin Author: Climate Leadership Initiative, Barr, Brian R., Koopman, Marni E., Williams, Cindy Deacon, Vynne, Stacy, 1979-, Hamilton, Roger, Doppelt, Bob, National Center for Conservation Science and Policy Year: 2010 iii, 36 p. Title: Preparing for Climate Change in the Klamath Basin Author: Climate Leadership Initiative, Barr, Brian R., Koopman, Marni E., Williams, Cindy Deacon, Vynne, Stacy, 1979-, Hamilton, Roger, Doppelt, Bob, National Center for Conservation Science and Policy Year: 2010 iii, 36 p. Close

• 24. [Article] Investigating Groundwater Arsenic Contamination using Aquifer Push-Pull Tests

  xiii, 67 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.

  Citation × Citation Citation Abstract Copy Title: Investigating Groundwater Arsenic Contamination using Aquifer Push-Pull Tests Author: Daigle, Ashley R., 1986- Year: 2010 xiii, 67 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. Title: Investigating Groundwater Arsenic Contamination using Aquifer Push-Pull Tests Author: Daigle, Ashley R., 1986- Year: 2010 xiii, 67 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. Close

• 25. [Article] Essays on Economic Development and Climate Change

  The first essay considers the relative effectiveness of government and non-governmental organizations (NGOs) as channels to allocate resources. I use a catastrophic climate-related shock--Hurricane Mitch--to ...

  Citation × Citation Citation Abstract Copy Title: Essays on Economic Development and Climate Change Author: Fitch-Fleischmann, Benjamin Year: 2015 The first essay considers the relative effectiveness of government and non-governmental organizations (NGOs) as channels to allocate resources. I use a catastrophic climate-related shock--Hurricane Mitch--to examine the political economy of these channels of aid distribution at the micro level. I combine extensive data on aid received by Nicaraguan households with data on municipal election outcomes and an exogenous, precipitation-based measure of hurricane impact. I find that the hurricane had long-lasting effects on the aid received by households from both NGOs and the government. In the short term, however, the government did not provide aid according to the objective measure of hurricane damage but instead provided aid along political lines. The second essay presents estimates of a relationship between extreme hot temperatures during gestation and a child's subsequent physical well-being in a sample of children in Peru, thus extending existing evidence constructed from U.S. data. Estimates are constructed using high-resolution gridded climate data and geo-coded household surveys. The results suggest that a period of extreme heat (a month whose average temperature is more than 2 standard deviations above the local average) in the period 1 to 3 months before birth is associated with lower weight at birth and a reduction in height (measured 1 to 59 months after birth) that cannot be fully explained by birth weight. There is no evidence of differential maternal investment, as measured by duration of breastfeeding, according to a child's exposure to extreme heat during gestation. The third essay asks whether improved treatment of HIV/AIDS in Africa can be achieved simply by paying health workers to do more. I present estimates of the impact of financial incentives paid to individual workers at public health facilities in Mozambique. The results suggest that piece-rate incentives increased the delivery of five out of fourteen health services for which treatment effects can be identified, with estimated increases ranging from 34 to 157 percent, depending on the particular service. I find no evidence of a corresponding decrease in the delivery of services that are not financially incentivized, suggesting that there is no "crowding out" of intrinsic motivation. Title: Essays on Economic Development and Climate Change Author: Fitch-Fleischmann, Benjamin Year: 2015 The first essay considers the relative effectiveness of government and non-governmental organizations (NGOs) as channels to allocate resources. I use a catastrophic climate-related shock--Hurricane Mitch--to examine the political economy of these channels of aid distribution at the micro level. I combine extensive data on aid received by Nicaraguan households with data on municipal election outcomes and an exogenous, precipitation-based measure of hurricane impact. I find that the hurricane had long-lasting effects on the aid received by households from both NGOs and the government. In the short term, however, the government did not provide aid according to the objective measure of hurricane damage but instead provided aid along political lines. The second essay presents estimates of a relationship between extreme hot temperatures during gestation and a child's subsequent physical well-being in a sample of children in Peru, thus extending existing evidence constructed from U.S. data. Estimates are constructed using high-resolution gridded climate data and geo-coded household surveys. The results suggest that a period of extreme heat (a month whose average temperature is more than 2 standard deviations above the local average) in the period 1 to 3 months before birth is associated with lower weight at birth and a reduction in height (measured 1 to 59 months after birth) that cannot be fully explained by birth weight. There is no evidence of differential maternal investment, as measured by duration of breastfeeding, according to a child's exposure to extreme heat during gestation. The third essay asks whether improved treatment of HIV/AIDS in Africa can be achieved simply by paying health workers to do more. I present estimates of the impact of financial incentives paid to individual workers at public health facilities in Mozambique. The results suggest that piece-rate incentives increased the delivery of five out of fourteen health services for which treatment effects can be identified, with estimated increases ranging from 34 to 157 percent, depending on the particular service. I find no evidence of a corresponding decrease in the delivery of services that are not financially incentivized, suggesting that there is no "crowding out" of intrinsic motivation. Close

• 26. [Article] Controls on the Kinematics of Slow-moving Landslides from Satellite Radar Interferometry and Mechanical Modeling

  Landslides display a wide variety of behaviors ranging from slow persistent motion to rapid acceleration and catastrophic failure. Given the variety of possible behaviors, improvements to our understanding ...

  Citation × Citation Citation Abstract Copy Title: Controls on the Kinematics of Slow-moving Landslides from Satellite Radar Interferometry and Mechanical Modeling Author: Handwerger, Alexander Year: 2015 Landslides display a wide variety of behaviors ranging from slow persistent motion to rapid acceleration and catastrophic failure. Given the variety of possible behaviors, improvements to our understanding of landslide mechanics are critical for accurate predictions of landslide dynamics. Recent advances in remote sensing techniques, like satellite radar interferometry (InSAR), now enable high-resolution spatial and temporal measurements that provide insight into the mechanisms that control landslide behavior. In this dissertation, I use InSAR and high-resolution topographic data to identify 50 slow-moving landslides in the Northern California Coast Ranges and monitor their kinematics over 4 years. These landslides have similar mechanical properties and are subject to the same external forcings, which allows me to explore geometrical controls on kinematics. Each landslide displays distinct kinematic zones with different mean velocities that remain spatially fixed. Because these deformation patterns are sensitive to subsurface geometry, I employ a mathematical model to infer landslide thickness and find that these landslides exhibit a highly variable thickness and an irregular basal sliding surface. Time series analysis reveals that each landslide displays well-defined seasonal velocity changes with a periodicity of ∼ 1 year. These velocity variations are driven by precipitation- induced changes in pore-water pressure that lag the onset of rainfall by up to 40 days. Despite significant variations in geometry, I find no systematic differences in seasonal landslide behavior. To further explore how stress perturbations control landslide motion, I develop a mechanical model that reproduces both the displacement patterns observed at slow-moving landslides and the acceleration towards failure exhibited by catastrophic events. I find that catastrophic failure can only occur when the slip surface is characterized by rate-weakening friction and its spatial dimensions exceed a critical nucleation length that is shorter for higher effective stresses. These model simulations support my conclusions from the remote sensing analysis but also provide insight into the long-term evolution of landslides. This dissertation includes both previously published and unpublished co- authored material. Title: Controls on the Kinematics of Slow-moving Landslides from Satellite Radar Interferometry and Mechanical Modeling Author: Handwerger, Alexander Year: 2015 Landslides display a wide variety of behaviors ranging from slow persistent motion to rapid acceleration and catastrophic failure. Given the variety of possible behaviors, improvements to our understanding of landslide mechanics are critical for accurate predictions of landslide dynamics. Recent advances in remote sensing techniques, like satellite radar interferometry (InSAR), now enable high-resolution spatial and temporal measurements that provide insight into the mechanisms that control landslide behavior. In this dissertation, I use InSAR and high-resolution topographic data to identify 50 slow-moving landslides in the Northern California Coast Ranges and monitor their kinematics over 4 years. These landslides have similar mechanical properties and are subject to the same external forcings, which allows me to explore geometrical controls on kinematics. Each landslide displays distinct kinematic zones with different mean velocities that remain spatially fixed. Because these deformation patterns are sensitive to subsurface geometry, I employ a mathematical model to infer landslide thickness and find that these landslides exhibit a highly variable thickness and an irregular basal sliding surface. Time series analysis reveals that each landslide displays well-defined seasonal velocity changes with a periodicity of ∼ 1 year. These velocity variations are driven by precipitation- induced changes in pore-water pressure that lag the onset of rainfall by up to 40 days. Despite significant variations in geometry, I find no systematic differences in seasonal landslide behavior. To further explore how stress perturbations control landslide motion, I develop a mechanical model that reproduces both the displacement patterns observed at slow-moving landslides and the acceleration towards failure exhibited by catastrophic events. I find that catastrophic failure can only occur when the slip surface is characterized by rate-weakening friction and its spatial dimensions exceed a critical nucleation length that is shorter for higher effective stresses. These model simulations support my conclusions from the remote sensing analysis but also provide insight into the long-term evolution of landslides. This dissertation includes both previously published and unpublished co- authored material. Close

• 27. [Article] A Hierarchical Modeling Approach to Simulating the Geomorphic Response of River Systems to Climate Change

  Anthropogenic climate change significantly affects water resources. River flows in mountainous regions are driven by snowmelt and are therefore highly sensitive to increases in temperature resulting from ...

  Citation × Citation Citation Abstract Copy Title: A Hierarchical Modeling Approach to Simulating the Geomorphic Response of River Systems to Climate Change Author: Praskievicz, Sarah Year: 2014 Anthropogenic climate change significantly affects water resources. River flows in mountainous regions are driven by snowmelt and are therefore highly sensitive to increases in temperature resulting from climate change. Climate-driven hydrological changes are potentially significant for the fluvial geomorphology of river systems. In unchanging climatic and tectonic conditions, a river's morphology will develop in equilibrium with inputs of water and sediment, but climate change represents a potential forcing on these variables that may push the system into disequilibrium and cause significant changes in river morphology. Geomorphic factors, such as channel geometry, planform, and sediment transport, are major determinants of the value of river systems, including their suitability for threatened and endangered species and for human uses of water. This dissertation research uses a hierarchical modeling approach to investigate potential impacts of anthropogenic climate change on river morphology in the interior Pacific Northwest. The research will address the following theoretical and methodological objectives: 1) Develop downscaled climate change scenarios, based on regional climate-model output, including changes in daily minimum and maximum temperature and precipitation. 2) Estimate how climate change scenarios affect river discharge and suspended-sediment load, using a basin-scale hydrologic model. 3) Examine potential impacts of climate-driven hydrologic changes on stream power and shear stress, bedload sediment transport, and river morphology, including channel geometry and planform. The downscaling approach, based on empirically-estimated local topographic lapse rates, produces high-resolution climate grids with positive forecast skill. The hydrologic modeling results indicate that projected climate change in the study rivers will change the annual cycle of hydrology, with increased winter discharge, a decrease in the magnitude of the spring snowmelt peak, and decreased summer discharge. Geomorphic modeling results suggest that changes in reach-averaged bedload transport are highly sensitive to likely changes in the recurrence interval of the critical discharge needed to mobilize bed sediments. This dissertation research makes an original contribution to the climate-change impacts literature by linking Earth processes across a wide range of spatial scales to project changes in river systems that may be significant for management of these systems for societal and ecological benefits. This dissertation includes unpublished co-authored material. Title: A Hierarchical Modeling Approach to Simulating the Geomorphic Response of River Systems to Climate Change Author: Praskievicz, Sarah Year: 2014 Anthropogenic climate change significantly affects water resources. River flows in mountainous regions are driven by snowmelt and are therefore highly sensitive to increases in temperature resulting from climate change. Climate-driven hydrological changes are potentially significant for the fluvial geomorphology of river systems. In unchanging climatic and tectonic conditions, a river's morphology will develop in equilibrium with inputs of water and sediment, but climate change represents a potential forcing on these variables that may push the system into disequilibrium and cause significant changes in river morphology. Geomorphic factors, such as channel geometry, planform, and sediment transport, are major determinants of the value of river systems, including their suitability for threatened and endangered species and for human uses of water. This dissertation research uses a hierarchical modeling approach to investigate potential impacts of anthropogenic climate change on river morphology in the interior Pacific Northwest. The research will address the following theoretical and methodological objectives: 1) Develop downscaled climate change scenarios, based on regional climate-model output, including changes in daily minimum and maximum temperature and precipitation. 2) Estimate how climate change scenarios affect river discharge and suspended-sediment load, using a basin-scale hydrologic model. 3) Examine potential impacts of climate-driven hydrologic changes on stream power and shear stress, bedload sediment transport, and river morphology, including channel geometry and planform. The downscaling approach, based on empirically-estimated local topographic lapse rates, produces high-resolution climate grids with positive forecast skill. The hydrologic modeling results indicate that projected climate change in the study rivers will change the annual cycle of hydrology, with increased winter discharge, a decrease in the magnitude of the spring snowmelt peak, and decreased summer discharge. Geomorphic modeling results suggest that changes in reach-averaged bedload transport are highly sensitive to likely changes in the recurrence interval of the critical discharge needed to mobilize bed sediments. This dissertation research makes an original contribution to the climate-change impacts literature by linking Earth processes across a wide range of spatial scales to project changes in river systems that may be significant for management of these systems for societal and ecological benefits. This dissertation includes unpublished co-authored material. Close

• 28. [Article] Constructed Wetland Suitability Analysis in Oregon

  51 pages

  Citation × Citation Citation Abstract Copy Title: Constructed Wetland Suitability Analysis in Oregon Author: Collins, Kyle Year: 2017 51 pages Title: Constructed Wetland Suitability Analysis in Oregon Author: Collins, Kyle Year: 2017 51 pages Close

• 29. [Article] Synapse Formation in the Zebrafish Spinal Cord

  xv, 102 p. : ill. (some col.)

  Citation × Citation Citation Abstract Copy Title: Synapse Formation in the Zebrafish Spinal Cord Author: Easley-Neal, Courtney Nichelle, 1981- Year: 2012, 2011 xv, 102 p. : ill. (some col.) Title: Synapse Formation in the Zebrafish Spinal Cord Author: Easley-Neal, Courtney Nichelle, 1981- Year: 2012, 2011 xv, 102 p. : ill. (some col.) Close

• 30. [Article] The early Miocene Cape Blanco flora of coastal Oregon

  xvii, 106 p. : ill., maps. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.

  Citation × Citation Citation Abstract Copy Title: The early Miocene Cape Blanco flora of coastal Oregon Author: Emerson, Lisa Francis, 1979- Year: 2010, 2009 xvii, 106 p. : ill., maps. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. Title: The early Miocene Cape Blanco flora of coastal Oregon Author: Emerson, Lisa Francis, 1979- Year: 2010, 2009 xvii, 106 p. : ill., maps. A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. Close