Index Catalog // ScholarsArchive@OSU

Evaluation of popcorn cultivars as resistant rotation crops to Columbia root-knot nematode : A systems approach

Creator:: Cardwell, Derek
Abstract:: This study examined the management situation for the Columbiaroot-knot nematode (Meloidogyne chitwoodi) in potato, using an approach with systems thinking and interactive meetings. The focus of current research for control of this nematode was evaluated. Control practices include crop rotation, and this study also evaluated popcorn cultivars for their potential...
Resource Type:: Undergraduate Thesis

Detrital Input and Removal Treatment (DIRT) Network Soil Analysis in the UMBS Michigan Field Site

Creator:: Bushyhead, Coryn N.
Abstract:: Soil contains approximately 75% of the carbon pool on land - three times more than the amount stored in living plants and animals (Schlesinger 1999). Therefore, soils play a major role in maintaining a balanced global carbon cycle. Models of the soil carbon ecosystem assume a strong relationship between organic...
Resource Type:: Undergraduate Thesis
Full Text:: Wanda Crannell Katherine Field Kate Lajtha Derek Peirson 2 Abstract Soil contains approximately

The production of dissolved organic carbon (DOC) over time with change in substrate type, temperature, and mineral soil inclusion

Creator:: Stanton, Alexandria H.
Abstract:: Dissolved Organic Carbon (DOC) originates from organic matter. Climate and vegetation have been found to alter DOC production. The goal of this study was to determine where the differences in DOC production originate from. Mineral soil and substrate including maple leaves, needles, old wood, and sticks were collected from the...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Derek Pierson, Committee Member, representing Crop and Soil Sciences

Dissolved Organic Carbon Production and Flux from Long Term Litter Manipulations in a Pacific Northwest Old-Growth Forest

Creator:: Evans, Lucas R.
Abstract:: Dissolved organic carbon (DOC) flux is an important mechanism to convey soil carbon (C) from aboveground organic debris (litter) to deeper soil horizons and can influence the formation of stable soil organic carbon (SOC) compounds. Aboveground litter quantity and quality was manipulated for 20-years in an old-growth Douglas fir forest...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Derek Pierson, Committee Member, representing Crop and Soil Science

Prototyping of Thermoelectric Energy Harvesting Circuitry for IoT Devices

Creator:: Webb, Derek
Abstract:: Due to the advancement of incredibly low power microcontrollers and small form factor integrated circuits, energy harvesting can be considered as an alternative, low power source for remote ocean sensing and measurements. To demonstrate the effectiveness of harvesting thermoelectric energy contained in the temperature differential between ocean surface water and...
Resource Type:: Honors College Thesis
Full Text:: IoT Devices By Derek Webb A THESIS submitted to Oregon State University Honors College in

Development of Miniature Wire pH Sensors for Real-Time Monitoring of the Streptococcus Mutans Biofilm

Creator:: Wong, Derek C.
Abstract:: The interface between a biofilm and the underlying substrate to which it is attached is challenging to study. Currently, available methods of studying this microenvironment have not been able to record data in real-time over a time period in the range of days. To address this challenge, we report the...
Resource Type:: Honors College Thesis
Full Text:: Real-Time Monitoring of the Streptococcus Mutans Biofilm by Derek Wong

Investigation of MoS2 with Ambient Pressure X-ray Photoelectron Spectroscopy

Creator:: Dardzinski, Derek P.
Abstract:: Molybdenum disulfide (MoS2) has potential applications as a low-cost catalyst for the hydrogen evolution reaction (HER). Defects on MoS2, such as edge sites and sulfur vacancies, are known to be the major active sites for HER. Controlling the formation of these defects allows for the enhancement in reactivity of MoS2...
Resource Type:: Honors College Thesis
Full Text:: by Derek Dardzinski A THESIS submitted to Oregon State University Honors College in partial

Optical Characterization of Transparent Conductive Thin Films

Creator:: Tucker, Derek A.
Abstract:: The optical characterization of transparent conductive thin films is demonstrated. The basics of transparency and conductivity, as they relate to transparent conductor research, are explained. A functional model of the reflectance and transmittance of a sample film, including interference fringes, is derived from the Fresnel electric field amplitude coefficients. The...
Resource Type:: Honors College Thesis
Full Text:: Films By Derek A. Tucker A PROJECT Submitted to Oregon State University University Honors

Restoring and Updating the Micralyne μTK

Creator:: Wong, Derek H.
Abstract:: The Micralyne microfluidic toolkit (μTK) was an instrument built by Micralyne in the early 2000’s. It was built for electrophoresis and has a sensitive laser-induced fluorescence detection system. The updates to the system were upgrading the control GUI from running in LabVIEW 5 (Windows XP, 2000) to LabVIEW 2012 (Windows...
Resource Type:: Honors College Thesis
Full Text:: Restoring and Updating the Micralyne μTK by Derek

Land Use Impacts on Water Quality in Oak Creek Watershed

Creator:: Johnson, Keira R.
Abstract:: Understanding the relationships between land use, water quality, and groundwater is crucial for ecological, economic, and water management decisions. This study aims to provide a comprehensive analysis of the land use activities and hydrologic processes influencing the water quality of Oak Creek watershed. Objectives of this study were: 1) to...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ Derek Godwin, Committee Member, representing Biological and Ecological Engineering

ScholarsArchive@OSU

Evaluation of popcorn cultivars as resistant rotation crops to Columbia root-knot nematode : A systems approach

Detrital Input and Removal Treatment (DIRT) Network Soil Analysis in the UMBS Michigan Field Site

The production of dissolved organic carbon (DOC) over time with change in substrate type, temperature, and mineral soil inclusion

Dissolved Organic Carbon Production and Flux from Long Term Litter Manipulations in a Pacific Northwest Old-Growth Forest

Prototyping of Thermoelectric Energy Harvesting Circuitry for IoT Devices

Development of Miniature Wire pH Sensors for Real-Time Monitoring of the Streptococcus Mutans Biofilm

Investigation of MoS2 with Ambient Pressure X-ray Photoelectron Spectroscopy

Optical Characterization of Transparent Conductive Thin Films

Restoring and Updating the Micralyne μTK

Land Use Impacts on Water Quality in Oak Creek Watershed

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