Digital Commons Network^™

The Comparison Of Effects Of Synthetic And Natural Arachidin-3 On Rotavirus Infected Cells, Rebekah Napier-Jameson

Electronic Theses and Dissertations

Rotavirus (RV) causes severe, life-threatening diarrhea, in infants, young children and immunocompromised adults. There are several effective vaccines for young children, however they are strain specific and are not protective against many RV strains in developing countries. Therefore, it is important to investigate anti-RV therapeutic agents. Our laboratory has shown arachidin-1 (A1) and arachadin-3 (A3) significantly inhibit RV replication in two cell lines, however the molecular mechanism(s) of action are not known. A synthetic molecule of A3 (sA3) has been produced, but its’ antiviral effects have not been examined. Our hypothesis is that sA3 produces the same effects on RV-infected …

Bridging The Gap: Community Gardens As A Supplement To Senior Adult Food Assistance Programs, Jheri-Lynn Mcswain

Electronic Theses and Dissertations

Food insecurity and access to nutrition-rich food for senior adults receiving food assistance is an ever-growing concern in the United States. For households that lack accessible food, the availability of alternative sources of nutrition such as community gardens could be critically important to maintaining a stable level of food security. The purpose of this study was to explore the feasibility of using a community garden as a supplemental food assistance tool for congregate meals sites and food pantries. This study encompassed the following three phases: 1) surveying the trends in Shelby County, Texas senior adults receiving food assistance to determine …

Analysis Of Hybridization Between Native And Invasive Pupfishes (Cyprinodon), Kristina Ayers

Electronic Theses and Dissertations

Invasive species are detrimental to native species and when hybridization is involved a decrease in biodiversity may result. Cyprinodon variegatus is an invasive species that has caused devastation to several Cyprinodon species through rapid hybridization and genetic introgression. Cyprinodon rubrofluviatilis is native to the Brazos, Wichita and Red Rivers but fish collected between 2006-2012 from the Brazos River expressed intermediate morphological traits suggesting hybridization had occurred. My objective was to investigate if C. variegatus and C. rubrofluviatilis had hybridized in the Brazos River and if so, to determine the extent of introgression. Molecular analysis of specimens collected between 2013-2017 identified …

A Habitat Suitability Model For Ruffed Grouse (Bonasa Umbellus) In New York State Department Of Environmental Conservation Region 8, Austin Groff

Theses

Shrubland, young forest, and other types of early successional habitats have historically declined due to a lack in anthropogenic and natural disturbances. This decline in disturbance-dependent habitats has impacted the populations of a variety of species, with some of conservation concern, such as the Ruffed Grouse (Bonasa umbellus). Using an iteration-reduction method for this project, a Habitat Suitability Model was created in ArcGIS Pro to assess NYSDEC Region 8 for potential habitat, and to assist with determining where the potential habitat was located within the area of interest. These potential habitat areas were ranked from “POOR” to “PRIME” based on …

Lvad Occlusion Condition Monitoring Using State Augmented Acoustic Spectral Images, Ian Richard Prechtl

Theses

Each year, thousands of people die from heart disease and related illnesses due to the lack of available donor organs. Left ventricular assist devices (LVADs) aim to mitigate that occurrence, serving as a bridge-to-surgery option. While short term survival rates of LVAD patients near that of orthotopic surgery they are not viable long term options due to varied reasons. This work examines one cause, outlet graft thrombosis, and develops an algorithm for increasingly robust classification of device condition as it pertains to thrombosis or more generally occlusion. In order to do so an in vitro heart simulator is developed so …

Characterization Of Shear-Induced Hemolysis In Rotational Medical Devices, James A. Krisher

Theses

The implantation of a Left Ventricular Assist Device (LVAD) is a rapidly growing means of treatment for a large variety of heart ailments. These blood pumps necessarily exert some degree of shear stress on blood passing through them, which, over time, may cause the rupture of red blood cells, coagulation, thromboses, and bleeding. This limits their use as long term treatment and therapy. While the relationship of fluid shear to blood damage has been demonstrated previously, there is significant variance in the reported levels of damage. Were these stresses and subsequent damage to be well understood and related, existing and …

Structural Approach To Understanding Restoration Management Effects On Prairie Community Composition, Rebecca A. Stelzer

Faculty Articles, Papers, and Other Scholarship

No abstract provided.

A Multiple Case Study Examining Instructional Coaching And Reflective Practices Through Video-Based Feedback Systems, Dennis Dotterer

Doctoral Dissertations and Projects

The purpose of this qualitative multi-case study was to examine the use of video-based instructional feedback models for three primary participants in a rural southern district. This qualitative study built upon the constructivist foundations of Mezirow’s transformative learning theory and Kegan’s constructive developmental theory, specifically connections to “ways of knowing” as it explored how the use of technology in teacher observations enhance adult learning and practice through enhanced reflection. This qualitative multi-case study sought to explain educators use video-based feedback to enhance teacher efficacy within the processes of instructional supervision. The focal participant of this study was one content-based classroom …

Prevalence And Correlates Of Physical And Sexual Intimate Partner Violence Among Women Living With Hiv In Uganda, Cynthia R. Young, Angela Kaida, Jerome Kabakyenga, Winnie R. Muyindike, Nicholas Musinguzi, Jeffrey N. Martin, Peter W. Hunt, David Bangsberg, Jessica E. Haberer, Lynn T. Matthews

OHSU-PSU School of Public Health Faculty Publications and Presentations

Background: Intimate partner violence (IPV) is a significant global health problem. Women who experience IPV have increased HIV incidence, reduced antiretroviral adherence, and a lower likelihood of viral load suppression. There is a lack of evidence regarding how to effectively identify and support women living with HIV (WLWH) experiencing IPV, including uncertainty whether universal or targeted screening is most appropriate for lower-resourced settings. We examined physical and sexual IPV prevalence and correlates among WLWH in Uganda to understand the burden of IPV and factors that could help identify women at risk.

Methods: We utilized data from women receiving …

Algorithms And Automation: An Introduction, Ian Lowrie

University Honors College Faculty Publication and Presentations

Our world is densely populated by ubiquitous processors, capacious storage, and vigilant sensors. Networks of such machines are constantly measuring, packaging, storing, circulating, and operating on the world. They are busy assembling and being assembled, sharing information, and distributing their processing loads as they make decisions and enact plans. At the same time, they are refusing connections, maintaining their immune systems, performing network security, managing their boundaries, and controlling access. Human bodies move among this flexible, securitized meshwork of silicon, electricity, code, fiber optics, and data: building, maintaining, and restructuring. Their activity ensures that aesthetic, epistemological, economic, and political structures …

Managing Herbicide Resistance: Listening To The Perspectives Of Practitioners. Procedures For Conducting Listening Sessions And An Evaluation Of The Process, Jill Schroeder, Michael Barrett, David R. Shaw, Amy Asmus, Harold Coble, David E. Ervin, Multiple Additional Authors

Economics Faculty Publications and Presentations

Seven half-day regional listening sessions were held between December 2016 and April 2017 with groups of diverse stakeholders on the issues and potential solutions for herbicide resistance management. The objective of the listening sessions was to connect with stakeholders and hear their challenges and recommendations for addressing herbicide resistance. The coordinating team hired Strategic Conservation Solutions, LLC, to facilitate all the sessions. They and the coordinating team used in-person meetings, teleconferences, and email to communicate and coordinate the activities leading up to each regional listening session. The agenda was the same across all sessions and included small-group discussions followed by …

Managing Wicked Herbicide-Resistance: Lessons From The Field, Jill Schroeder, Michael Barrett, David R. Shaw, Amy Asmus, Harold Coble, David E. Ervin, Multiple Additional Authors

Economics Faculty Publications and Presentations

Herbicide resistance is ‘wicked’ in nature; therefore, results of the many educational efforts to encourage diversification of weed control practices in the United States have been mixed. It is clear that we do not sufficiently understand the totality of the grassroots obstacles, concerns, challenges, and specific solutions needed for varied crop production systems. Weed management issues and solutions vary with such variables as management styles, regions, cropping systems, and available or affordable technologies. Therefore, to help the weed science community better understand the needs and ideas of those directly dealing with herbicide resistance, seven half-day regional listening sessions were held …

Special Issue On Climate Change And Land Conservation And Restoration: Advances In Economics Methods And Policies For Adaptation And Mitigation, Sarah Cline, Sahan T.M. Dissanayake

Economics Faculty Publications and Presentations

Climate change will likely impact the ecosystem services and biodiversity generated from conserved land. Land conservation can also play a significant role in achieving cost-effective mitigation of greenhouse gas emissions. In this special issue we feature seven papers from the 2017 NAREA Workshop, “Climate Change and Land Conservation and Restoration: Advances in Economics Methods and Policies for Adaptation and Mitigation.” The articles include papers furthering the methodological frontier; portfolio optimization, dynamic rangeland stocking, and global timber harvest models, and those highlighting innovative applications; climate smart agricultural practices in Nigeria and Vietnam, welfare impacts on birding, and carbon and albedo pricing.

Future Warming And Acidification Result In Multiple Ecological Impacts To A Temperate Coralline Alga, Megan J. Huggett, Kathryn Mcmahon, Rachele Bernasconi

Research outputs 2014 to 2021

Coralline algae are a crucial component of reef systems, stabilising reef substrate, providing habitat and contributing to accretion. Coralline algae and their surface microbial biofilms are also important as settlement cues for marine invertebrates, yet few studies address the impact of future environmental conditions on interactions between coralline algae, reef microbes and settlement by larvae of marine invertebrates. We exposed the temperate coralline algal species Amphiroa gracilis to warming and/or acidification scenarios for 21 days. Algae became bleached but photosystem II function was not measurably impacted. Settlement by larvae of the sea urchin Heliocidaris erythrogramma was reduced and the structure …

Shipboard Design And Fabrication Of Custom 3d-Printed Soft Robotic Manipulators For The Investigation Of Delicate Deep-Sea Organisms, Daniel M. Vogt, Kaitlyn P. Becker, Brennan T. Phillips, Moritz A. Graule, Randi D. Rotjan, Timothy M. Shank, Erik E. Cordes, Robert J. Wood, David F. Gruber

Publications and Research

Soft robotics is an emerging technology that has shown considerable promise in deep-sea marine biological applications. It is particularly useful in facilitating delicate interactions with fragile marine organisms. This study describes the shipboard design, 3D printing and integration of custom soft robotic manipulators for investigating and interacting with deep-sea organisms. Soft robotics manipulators were tested down to 2224m via a Remotely-Operated Vehicle (ROV) in the Phoenix Islands Protected Area (PIPA) and facilitated the study of a diverse suite of soft-bodied and fragile marine life. Instantaneous feedback from the ROV pilots and biologists allowed for rapid re-design, such as adding ªfingernailsº, …

Spray Characterization And Herbicide Efficacy As Influenced By Pulse-Width Modulation Sprayers, Thomas R. Butts

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Pesticide applications are a heavily scrutinized facet of today’s agricultural industry, and a concerted effort to optimize each application needs to be implemented. More precise and efficient pesticide applications are necessary to meet regulatory demands and increase economic efficiency through reduced pesticide inputs. Current pesticide application methods using precision technologies, including pulse-width modulation (PWM) sprayers, can assist with these goals. However, vast advancements in pesticide formulations, adjuvants, and nozzles, as well as the increasing popularity of PWM systems, have only increased the need for applied PWM and weed science research. Additionally, efforts have been placed on increasing spray droplet size …

Surface-Water Groundwater Interactions In The Middle Rio Grande, Nm Implications For Bank Storage And Native Species, Tom Heller

Water Resources Professional Project Reports

Riparian zones are important for ecological purposes and ecosystem processes, and are valued for aesthetic, recreational, cultural, and historical reasons. The declining integrity of cottonwood-dominated riparian systems in the Middle Rio Grande (MRG) of central New Mexico has been evident for several decades, of which the largest cause has been the severe alterations riparian hydrology. While cottonwood germination responses to changing flood regimes have been well studied, the response to changing groundwater dynamics - and the suitability of groundwater regimes in the MRG - is less well understood. This study used pressure transducer groundwater datasets installed in the Rio Grande …

Opportunities To Enhance Environmental Flows On The Rio Chama, Anjali Bean

Water Resources Professional Project Reports

The construction of El Vado dam on the Rio Chama in 1935 dramatically changed the natural flow of the river, reducing spring runoff and summer scouring floods in favor of providing a constant water supply to downstream users. The San Juan-Chama Project, a trans-basin water diversion built as part of the Colorado River Compact, also significantly increased water flow in the river, a unique situation in the state of New Mexico. This increase in management of the river for human benefit has permanently altered the natural hydrograph of the river and the ecology and geomorphology of the system that depends …

Charter Schools Annual Report 2016, Tennessee. Department Of Education.

Charter Schools Annual Report

No abstract provided.

The Impact Of Colostrum Versus Formula Feeding And Fat Supplementation On Vaginal Lipidome And Uterine Development In Gilts On Postnatal Day 2, Kalynn Harlow

Open Access Theses

Genetic selection for larger litters negatively affected the swine industry by reducing piglet birthweights and survival. Moreover, sow colostrum production did not increase with increased litter size. Colostrum is essential for postnatal piglet growth and development because it provides nutrition, energy and bioactive factors. Milk replacers are available to supplement piglets with limited colostrum intake. However, replacer formulas lack bioactive factors in milk, and have plant-based fats substantially different from maternally derived lipids. Suckled and milk replacer-fed gilts show different patterns of uterine gene expression, and colostrum deprivation results in impaired uterine adenogenesis. Many lipids function as bioactive factors, thus …

Hyperspectral Imaging Of Chemical Composition, Jerald C. Martin

Open Access Theses

In this work, two different types of imaging are explored, one using fluorescence and another using X-rays. Hyperspectral imaging is a method of imaging materials that typically has three dimensions of information: x, y, and λ (wavelength). These measurements are useful for broad classes of imaging applications, including astronomy, geology, and medicine. However, the current methods used for hyperspectral imaging have significant drawbacks, including 1/f noise and complexity. Therefore, new methods have been recently developed to address these issues, such as new snapshot imaging systems. These systems, however, still often have high complexity, are expensive, and have limited applicability outside …

Conditioning Of Human Salivary Flow Using A Visual Cue For Sour Candy, Jonathan C. Kershaw, Cordelia Running

Department of Food Science Faculty Publications

Objective

Although the “mouthwatering” to sight, smell, or thought of food is commonly accepted in food and nutrition research, the concept of mouthwatering and human salivary flow conditioning is not well accepted in salivary research. The objective of this study was to revisit whether human salivary flow could be classically conditioned to a previously neutral stimulus.

Design

Sour candy or a non-food control in opaque containers were presented to healthy participants (n = 8). Simple images were consistently paired with container contents. Participants viewed the images for 15 s, then opened the containers and ate (candy) or did not eat …

Ecological Drivers Of Plant Community Composition In A Patterned Fen At Seney National Wildlife Refuge, Michigan, Alex Graeff

All NMU Master's Theses

Regional variation in geomorphology, vegetation, fen landforms, and water chemistry create a variety of unique peatlands across the Northern Hemisphere. In the Great Lakes region, patterned fens have been extensively studied in northern Minnesota, but largely ignored in Michigan. The purpose of this study was to describe vegetation, landforms, and water chemistry in a patterned fen at Seney National Wildlife Refuge. Percent cover of plant species and environmental variables were measured at 298 relevé style plots across 6 landform types: triangular swamp forests, featureless water tracks, peripheral water tracks, strings, flarks, and ponded sedge lawns. Additionally, several morphometric parameters were …

Hypoxia-Regulated Expression Of Glut-1 In Gbm Cell Lines, Marissa Kane

All NMU Master's Theses

Unlike normal cells, cancer cells can grow in low oxygen (hypoxic) environments. Changes in relative oxygen concentration can alter gene expression in tumors to allow for their selective growth. The result of such changes allows the tumor to adapt its cellular metabolism and promote tumor progression. Most notably, hypoxic conditions induce expression of the transcription factor hypoxia inducible factor 1 (HIF-1). HIF-1 is thought to directly affect glucose transporter 1 (GLUT1) expression levels in hypoxic conditions. This study sought to determine the relationship between HIF-1 and GLUT1 expression levels within normoxic and hypoxic environments utilizing an in-vitro GBM model. The …

Characterization Of Theranostic Peptides For Glioblastoma Multiforme, Aaron Mellesmoen

All NMU Master's Theses

Glioblastoma multiforme (GBM) is a type of primary CNS tumor in which viable treatment options do not exist. Standard of care including tumor resection, chemotherapy, and radiation does little to extend the 5-year survival expectancy past 5.1%. Herein, two small-peptide molecules with inherent antitumor activity, blood-brain barrier permeability, and capability for tumor-specific drug deliverance and intraoperative visualization (termed theranostic) were of focus. Confocal microscopy was employed to characterize in vitro specificity of chlorotoxin, a 4 kDa scorpion venom peptide, and rBSG, the recombinant 25 kDa non-glycosylated extracellular domain of extracellular matrix metalloproteinase inducer (EMMPRIN; Basigin) isoform …

Climate Driven Range Shifts Of North American Small Mammals: Species’ Traits And Phylogenetic Influences, Katie Nehiba

All NMU Master's Theses

Current anthropogenically-driven climate change is accelerating at an unprecedented rate. In response, species’ ranges may shift, tracking optimal climatic conditions. Species-specific differences may produce predictable differences in the extent of range shifts. I evaluated if patterns of predicted responses to climate change were strongly related to species’ taxonomic identities and/or ecological characteristics of species’ niches, elevation and precipitation. I evaluated differences in predicted range shifts in well-sampled small mammals that are restricted to North America: kangaroo rats, voles, chipmunks, and ground squirrels. I used species distribution modeling to develop predictions for the distributions of species under current and future climate …

Uncoupling Fermentative Synthesis Of Molecular Hydrogen From Biomass Formation In Thermotoga Maritima, Raghuveer Singh, Derrick White, Yaşar Demirel, Robert Kelley, Kenneth Noll, Paul H. Blum

Department of Chemical and Biomolecular Engineering: Faculty Publications

When carbohydrates are fermented by the hyperthermophilic anaerobe Thermotoga maritima, molecular hydrogen (H₂) is formed in strict proportion to substrate availability. Excretion of the organic acids acetate and lactate provide an additional sink for removal of excess reductant. However, mechanisms controlling energy management of these metabolic pathways are largely unexplored. To investigate this topic, transient gene inactivation was used to block lactate production as a strategy to produce spontaneous mutant cell lines that overproduced H₂ through mutation of unpredicted genetic targets. Single-crossover homologous chromosomal recombination was used to disrupt lactate dehydrogenase (encoded by ldh) with …

Improvement Of Soil Structure Through Organic Crop Management, Conservation Tillage And Grass-Clover Ley, Viviana Loaiza Puerta, Engil Isadora Pujol Pereira, Raphaël Wittwer, Marcel G. A. Van Der Heijden, Johan Six

School of Earth, Environmental, & Marine Sciences Faculty Publications

Highlights

• Organic crop management combined with reduced tillage improved soil structure.
• The ley period improved soil structure for conventional intensive tillage.
• The ley period increased total carbon in organic crop management at 0–6 cm soil depth.

Abstract

Conventional intensive tillage is a widespread soil management practice that controls weeds and promotes nutrient mineralization at the expense of a degraded soil structure and soil carbon (C) loss. Alternative soil management practices such as no tillage, reduced tillage and temporary leys, however, can minimize the negative effects of intensive tillage on soil structure. To improve understanding of these management practices on …

Engelmann Spruce Survival And Regeneration After An Epidemic Spruce Beetle Outbreak On The Markagunt Plateau In Southern Utah, Jessika M. Pettit

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Bark beetle outbreaks are becoming more intense and severe when coupled with the effects of climate change. Engelmann spruce (Picea engelmannii) is one such species facing large-scale, epidemic spruce beetle outbreaks. Large-scale disturbances, such as beetle outbreaks, have major consequences for the future success of the ecosystem, thus highlighting the importance of understanding what promotes amplified outbreaks as well as their effects on future seedling establishment. Our research focused on two parts of a large-scale beetle outbreak: the mortality of spruce trees and the subsequent regeneration of seedlings. Our first study examined the timing of spruce mortality during …

Fostering The Retrieval Of Suitable Web Resources In Response To Children's Educational Search Tasks, Oghenemaro Deborah Anuyah

Boise State University Theses and Dissertations

Children regularly turn to search engines (SEs) to locate school-related materials. Unfortunately, research has shown that when utilizing SEs, children do not always access resources that specifically target them. To support children, popular and child-oriented SEs make available a safe search filter, which is meant to eliminate inappropriate resources. Safe search is, however, not always the perfect deterrent as pornographic and hate-based resources may slip through the filter, while resources relevant to an educational search context may be misconstrued and filtered out. Moreover, filtering inappropriate resources in response to children searches is just one perspective to consider in offering them …