Pseudomonas protegens strain Pf-5 is a rhizosphere bacterium that suppresses soilborne plant diseases and produces at least seven different secondary metabolites with antifungal properties. We derived mutants of Pf-5 with single and multiple mutations in biosynthesis genes for seven antifungal metabolites: 2,4-diacetylphoroglucinol (DAPG), pyrrolnitrin, pyoluteorin, hydrogen cyanide, rhizoxin, orfamide A,...
Previous research on age-related differences in attentional capture has indicated that older adults are more susceptible to distraction than younger adults and this has been interpreted as a reduced capacity to inhibit distraction in late life. Recently, however, there have been discrepancies in the literature about in what circumstances older...
This paper fills an important gap towards ensuring gender responsive fish value chains by analyzing the factors that influence women’s participation in fish value chains and value chain governance in Malawi. The study was based on the hypothesis that gendered differences are prevalent in the fish value chains and their...
The Vermillion Basin, located in southwest Wyoming is an inhospitable, high altitude desert with unique biota and environmental conditions. The area has a long history of usages by humans including recreation, livestock grazing and mineral development. The natural gas industry has had a strong presence in the area since the...
To protect user’s privacy and system’s integrity, mobile platforms use permission models to control accesses to protected resources such as GPS location, Contacts, etc. The previous major version of Android used a static permission model, which compromised the security and privacy of apps. Android 6 overhauled its permission model to...
The study examined Fish Value Chain (FVC) in Yola area of Adamawa state, Nigeria. Primary data were collected using questionnaire and were analysed using descriptive and inferential statistics. The results showed that female dominate the fish marketing and processing nodes with 79% and 62% respectively while male (77%) dominate the...
Over the last several years, the Northwest Fisheries Science Center, in collaboration with the Pacific States Marine Fisheries Commission and Oregon State University, has been sampling young-of-the-year groundfishes and other small demersal fishes along the Newport Hydrographic (NH) line. An important question concerning these surveys is whether the NH line...
The High Performance Research Reactor Fuel Development (HPPRFD) program is responsible for developing low enriched uranium (LEU) fuel substitutes for high performance reactors fueled with highly enriched uranium (HEU) that have not yet been converted to LEU. The uranium-molybdenum (U-Mo) fuel system was selected for this effort. In this study,...
The most widely used and versatile medical radioisotope today is ⁹⁹[superscript]mTc. Roughly 30 million people depend on this radioisotope for diagnostic imaging procedures each year, and this demand is expected to grow. Although there are numerous ways of producing this isotope, the most common is from fission product 99Mo, which...
The paper adopts the double-bootstrap data envelopment analysis developed by Simar and Wilson in 2007 to estimate and explain technical efficiency of white-leg shrimp farming in Ninh Thuan, Vietnam. This procedure not only enables consistent inference within models explaining efficiency scores but also produces confidence intervals for these efficiency scores....
This project consists of the analysis, design, and manufacturing of the 2016 cooling system for Global Formula Racing’s combustion vehicle. Several water configurations were examined, using computational fluid dynamics (CFD) to estimate airflow and heat transfer calculations in MATLAB to estimate heat rejection through each concept. Data used to perform...
This project analyzes, tests, and redesigns an environmental control system for Global Formula Racing’s (GFR) dynamometer. It seeks to develop a working system to test GFR’s car engine under air conditions similar to those faced during competition. A model is developed to predict the performance of the environmental control system,...
Forest management planning is critical for the sustainability of natural systems on a site. Managing public ground is a complicated process, and usually involves many stakeholders with a variety of opinions. One such public property is the Evitts Creek Water Company (ECWC) property, owned by the city of Cumberland, Maryland....
This document provides a summary of a Special Session held at the IIFET 2016 Scotland conference in July 2016. The registration number and title of the special session were 5313: Analyzing behavioral responses to regulation – what can be learned for management? The session was organized by Florian K. Diekert,...
There is a strong interest in the robotics community in learning how humans grasp and manipulate objects, partly because robots need to operate in human environments and partly because humans are currently much better in physical interaction tasks than robots. This thesis seeks to identify the human heuristics for grasping...
The purpose of this project is to paint a picture of the state of Oregon’s Skilled Nursing Facilities for the 2015 state fiscal year. Skilled Nursing Facilities are an important part of Oregon’s Long Term care continuum that provides care to individuals needing post-acute or on-going care. The URAP student...
We demonstrate that unidirectionally aligned, free-standing multi-walled carbon nanotubes (CNTs) exhibit highly anisotropic linear and nonlinear terahertz (THz) responses. For the polarization parallel to the CNT axis, strong THz pulses induce nonlinear absorption in the quasi-one-dimensional conducting media, while no nonlinear effect is observed in the perpendicular polarization configuration. Time-resolved...
High-latitude phytoplankton blooms support productive fisheries and play an important role in oceanic uptake of atmospheric carbon dioxide. In the subarctic North Atlantic Ocean, blooms are a recurrent feature each year, while in the eastern subarctic Pacific only small changes in chlorophyll (Chl) are seen over the annual cycle. Here...
This article provides a thorough meta-analysis of the anomaly detection problem. To accomplish this we first identify approaches to benchmarking anomaly detection algorithms across the literature and produce a large corpus of anomaly detection benchmarks that vary in their construction across several dimensions we deem important to real-world applications: (a)...
The diatom Thalassiosira pseudonana was genetically modified to express biosilica-targeted fusion proteins comprising either enhanced green fluorescent protein (EGFP) or single chain antibodies engineered with a tetracysteine tagging sequence. Of interest were the site specific binding of (1) the fluorescent biarsenical probe AsCy3 and AsCy3e to the tetracysteine tagged fusion...
Background:
Canine oral fibrosarcoma (COF) is one of the most common oral tumors in dogs and carries a guarded prognosis due to a lack of effective systemic therapeutic options. Mastinib and imatinib are two commonly used tyrosine kinase inhibitors (TKIs) in veterinary oncology but their potential efficacy against COF is...
Vibrio parahaemolyticus is the leading cause of foodborne illnesses associated with seafood consumption. Consuming raw or undercooked seafood contaminated with V. parahaemolyticus can result in development of acute gastroenteritis with symptoms of nausea, vomiting, abdominal cramping and watery diarrhea within 24 hours of infection. Illness is usually self-limited and lasts...
This dissertation uses argon geochronology and cosmogenic nuclide surface exposure dating methods to address three research questions. The first question concerns a geomagnetic instability recorded in lava flows on the island of Floreana in the Galapagos Archipelago. Changes in the Earth’s magnetic field (intensity and orientation) occur frequently throughout geologic...
The purpose of this paper is not to present new game theoretic results, but is rather to discuss a new and much needed research program, which is at an early stage. Progress to date will be reported upon. It is the contention of the authors that, in stark contrast to...
Increasing complexity and demand of healthcare has not been matched with policy changes and improvements in healthcare training. In Linn, Benton, and Lincoln Counties (LBL), a few challenges that prevent the efficient training of healthcare providers are (1) limited training capacity due to clinical placements and availability of qualified faculty...
Investigations on the application of self-assembled monolayers (SAM) to indium gallium zinc oxide (IGZO) thin film transistors (TFT) for fabrication and channel modification are presented. The back channel of IGZO thin film transistors can be modified by the absorption of self-assembled monolayers. The electrical properties of the IGZO exposed back...
Structurally efficient and cost-effective solutions are needed to extend the service-life of deficient and aging highway infrastructure around the world. One critical need is to increase the flexural strength of older reinforced concrete (RC) structures to carry heavier and more frequent loads. Titanium alloy bars (TiAB) offer a new opportunity...
This thesis details the applications of a new method of agent-based structure synthesis. The goal of this research is to create structures that meet a structural goal within a simulated physics environment. The method proposed works as an iterative process of changing the structure, evaluating the new structure and using...
Soils and other resource programs in both public land management agencies and private industry are continually being adapted to the challenges of evolving knowledge and experience in the field of forestry. This dissertation explores new ways of thinking about and using soils information in forest planning and management, with a...
It is uncertain how predicted changes in climate will impact vegetation responses and plant species’ distributions because the physiological mechanisms underlying thresholds for damage are not well understood, and responses to stress vary by functional type and developmental stage. Thus, it is crucial to investigate physiological responses to heat and...
The Ratio Mountain Quadrangle is located in Southwest Montana, East of the city of
Butte. This quadrangle features two major geologic units; the Elkhorn Mountain
Volcanics, a series of several ignimbrites of varying composition, and the Boulder
Batholith, a large granite pluton that rose through the EMV. Previous studies in...
This project is a custom output stage for a two-channel signal source design project at Oregon State. Starting in January, I began leading a team tasked with the development of an arbitrary waveform generator via the CreateIT Collaboratory at OSU. Undergraduate students interview into the CreateIT Collaboratory and are assigned...
Fish farming has grown very rabidly during the past few decades. One component of this expansion is the introduction of new species, previously unknown to most consumers, to world markets. Arctic char, a cold water salmonid, is one of these species. In 1987, the total commercial supply only amounted to...
The HEXACO personality framework is an emerging perspective to explain the phenotypic structure of personality, and is believed to replicate across natural language lexical studies better than the Five-Factor Model. Although similar to the “Big Five,” the primary difference between the two structural models is the recovery of the Honesty-Humility...
In the framework of the H2020 PrimeFish project, whose general objective is to contribute to enhance the economic competitiveness of European fisheries and aquaculture sectors, the analysis of innovation and new product development in the seafood market is an important issue. Simultaneously, concerns on the environmental impact of seafood industry...
Understanding the processes controlling organic matter (OM) stocks in upland soils, and the ability to management them, is crucial for maintaining soil fertility and carbon (C) storage as well as projecting change with time. OM inputs are balanced by the mineralization (oxidation) rate, with the difference determining whether the system...
This paper highlights the fishing industry's views on economic impact assessments related to fisheries, and in particular the Scottish Government's assessment accompanying the MPA Consultation. The industry felt this assessment was incomplete, failed to recognise the true impacts on fishermen affected and failed to acknowledge local impacts on communities. We...
Aroma potentials in early and late maturity Pinot noir grapes were investigated in two
consecutive vintages. The grape samples were hydrolyzed under acidic conditions and the
released odorants were studied by aroma extract dilution analysis (AEDA). Forty-nine
main odor-active compounds were detected in the AEDA. The odorants released with
high...
INTRODUCTION: Academic libraries have experimented with a variety of services to encourage article deposit to institutional repositories, with varying degrees of success. Universities now face the challenge of meeting federal agency public access requirements. Following the White House Office of Science Technology and Policy public access directive in 2013, Oregon...
The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that is an important regulator of immune responses in various disease models. In the non-obese diabetic (NOD) mouse model of type 1 diabetes, activation of this receptor leads to suppression of the autoimmune response and limits immune cell infiltration of...
Recent state and national standards have increased the interest in engineering at the K-12 level. Science standards, in particular, have begun to make the case for including engineering throughout the K-12 scope of study. Despite the increased attention to engineering, the characteristics and uniqueness of the field of engineering are...
Produced water is a highly saline waste product of oil and gas production, which is generated in larger volumes than the hydrocarbons themselves in the United States. Spillage of produced water is of concern because its high salinity can contaminate soil, surface water and groundwater resources, and kill vegetation, including...
Assessing student conceptual understanding is a valuable method for gauging specific student learning outcomes but can be difficult and time consuming to measure. This research investigates the potential of automating some intermediary steps of a qualitative analysis of student conceptual understanding with tools from the field of Natural Language Processing...
Capture fisheries can potentially provide a wide range of social benefits, many of which make important contributions to local livelihoods and national economies. However, in practice, and in many representations of fisheries, the starting point for assessment is the biological, fish, element of the system and its production potential. The benefits...
The Columbia River Treaty (CRT) is often used as an example of how treaties can work to normalize, regulate, and improve the cooperative management of shared water resources between basin countries. Few would argue that, in its limited mandate to regulate hydropower generation and flood risk management for downstream communities,...
Wildfires pose complex challenges to policymakers and fire agencies. Fuel break networks and area-wide fuel treatments are risk-management options to reduce losses from large fires. Two fuel management scenarios covering 3% of the fire-prone Algarve region of Portugal and differing in the intensity of treatment in 120-m wide fuel breaks...
We analyzed the impact of amenity and biodiversity protection as mandated in national forest plans on the implementation of hazardous fuel reduction treatments aimed at protecting the wildland urban interface (WUI) and restoring fire resilient forests. We used simulation modeling to delineate areas on national forests that can potentially transmit...
The low risk and sustainable implementation of nanotechnology requires understanding how nanomaterial physicochemical properties influence their toxicity. Major drivers of toxicity need to be avoided while maximizing product efficacy so nanomaterials can be produced to best serve their applications and be of low risk when intentionally or unintentionally released into...