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Articles 1 - 30 of 212
Full-Text Articles in Life Sciences
Multi-Tactic Ecological Weed Management In A Changing Climate, Sonja K. Birthisel
Multi-Tactic Ecological Weed Management In A Changing Climate, Sonja K. Birthisel
Electronic Theses and Dissertations
Climate change is expected to impact weed communities in Maine, and the efficacy of tools and tactics farmers use to manage them. Through seedbank sampling and surveys of Maine organic farms, we identified currently rare weeds that are known to be especially abundant or problematic in warmer areas of the USA and might therefore represent an emerging agronomic risk. Many ecological weed management strategies that focus on depleting the weed seedbank are expected to remain effective in a changing climate, and become increasingly important as efficacy of cultivation and some herbicide applications diminish or become more variable. Through field experiments, …
From Virtual To Physical: Video Game Streaming Communities, Avery Miles
From Virtual To Physical: Video Game Streaming Communities, Avery Miles
Capstones
This is an exploration of the inner lives of video game streamers, how they interact with their audiences and the social phenomenon of live streaming. It encompasses streamers, viewers, professional eSports athletes and indie game designers.
www.averykmiles.com
Employing Natural History Collections In The Aid Of Conservation: Streamlining An Approach To Model Species Distributions En Masse For The Preservation Of Biodiversity, Alice Fornari
Master's Projects and Capstones
Using species distribution models (SDMs) in Natural History Collections (NHCs) can influence how humans implement conservation changes in flora and fauna communities and ecosystems. Through the use of legacy data (old NHCs and their associated locality/collection information), data correction (background data or pseudo absences added to presence-only data), and the SDM software, Maxent (and its associated geographic information systems or GIS projected models), it has been shown that it is feasible to create a low budget protocol/setup to project the past, present and future of species population changes. This has been done in the past few decades as more collections …
Microplastics In Full View: Birds As Bioindicators Of Malta's Coastal Ecosystem Health, Dalton Brauer
Microplastics In Full View: Birds As Bioindicators Of Malta's Coastal Ecosystem Health, Dalton Brauer
Masters Theses, 2010-2019
Plastic pollution has recently become a widely studied topic, yet research on microplastics has remained lacking for specific geographic regions. Microplastics are small plastics resulting from degradation or the dumping of raw material and can lead to deleterious impacts on the coastal marine environment and its organisms. To assess Malta’s coastal environmental health, water birds (inshore, offshore and pelagic species) were used as bioindicators by assessing the presence and abundance of plastic within their stomach contents. The project hoped to fill some of the current gaps in knowledge on microplastics within Malta by creating a working baseline, as well as …
True North Strong Canada 150: Canadian Identity And Its Contribution To Doping Free Sport, Helena A. Hlas
True North Strong Canada 150: Canadian Identity And Its Contribution To Doping Free Sport, Helena A. Hlas
Electronic Thesis and Dissertation Repository
This thesis, a reflective piece inspired by “Canada 150” events, explores the psychosocial and sociocultural factors surrounding the ongoing evolution of the clean sport movement in Canada. A literature review recounts the critical events in the history of doping, viz. the Ben Johnson scandal, which resulted in a call to overhaul sport culture and realign it with fair play values. Theories in sports philosophy and psychology provide a further understanding of the meaning of sport, and psychosocial factors that are inextricably linked to doping behavior, respectively. The autoethnographic method provides insight into current Canadian values to compare with those in …
The Effects Of Feliway On The Stress Of Cats During Veterinary Examination, Colleen Doonan
The Effects Of Feliway On The Stress Of Cats During Veterinary Examination, Colleen Doonan
Honors Theses
The purpose of this study was to examine the effects of Feliway® during veterinary examination. Feliway® contains a synthetic version of the F3 pheromone, secreted from the cheeks of Felis sylvestris catus when rubbing against objects in the environment. It is presumed to allow cats to establish a home range to feel secure. A double-blind study was conducted to address the limitations of another study that concluded Feliway® is useful for reducing stress experienced by cats during veterinary examination. The current study found that Feliway® is not useful by itself for adequate stress reduction during feline examinations. It was concluded …
Analysis Of Synthetic Opioids In Postmortem Blood, Vitreous Humor, And Brain Tissue, Rachel K. Chesser
Analysis Of Synthetic Opioids In Postmortem Blood, Vitreous Humor, And Brain Tissue, Rachel K. Chesser
Student Theses
In the United States, the use of new synthetic opioids (e.g. fentanyl and derivatives) has become an increasing health issue with thousands of overdose deaths being observed since 2013. With the high mortality rate associated with these substances, postmortem analyses and interpretation of synthetic opioids has become extremely important. However, due to the novelty of these compounds, the available data is limited and provides challenges to toxicologists. The focus of this project was to examine the postmortem distribution of new synthetic opioids in blood, vitreous humor, and brain tissue. New methods were developed and validated to quantify 13 synthetic opioids …
Imperfect Produce Pricing: Relationships Between Price Percent Discount And Demographic Traits Of Customers, April Foster
Imperfect Produce Pricing: Relationships Between Price Percent Discount And Demographic Traits Of Customers, April Foster
Graduate Theses and Dissertations
This research sought to understand the impact of price reductions on consumer spending behaviors related to the purchase of imperfect produce. Additionally, the correlation between consumers’ demographics and their willingness to purchase imperfect produce at various price points was evaluated. The data was viewed with mindfulness toward reducing food loss as a function of the world food crisis. More specifically, the purpose of this study was to describe the relationship between Washington County, Arkansas consumers’ demographic traits and the percent discount at which they are willing to alter their behavior to purchase specific imperfect produce items. Using the Theory of …
Optimizing Methods To Determine Metabolizable Energy Values Of Feed Ingredients For Broilers, Skyler P. West
Optimizing Methods To Determine Metabolizable Energy Values Of Feed Ingredients For Broilers, Skyler P. West
Graduate Theses and Dissertations
Determination of metabolizable energy (ME) and amino acid (AA) digestibility values of single feed indigents continues to be two of the most important aspects for successful least-cost poultry feed formulation. It would be advantageous if a common diet type could be utilized to determine both ME and AA digestibility values of feed ingredients within a single assay. Two experiments were conducted to evaluate the effect of basal diet type and excreta collection method on the ME value of single feed ingredients determined in broiler chicks using the regression method. In experiment 1, the objective was to investigate the influence of …
Allergy Training Or Lack Thereof, Madelyn Freeman, Mary Kate Klenke
Allergy Training Or Lack Thereof, Madelyn Freeman, Mary Kate Klenke
Human Nutrition and Hospitality Management Undergraduate Honors Theses
Food allergies affect many people in our society today, and the food service industry must keep up with the demand for allergen-free food from their customers. The objective of this research is to gain insight from the employee’s perspective of the importance of food allergies and what training method would help them learn best. Through this research we intend to learn how we can engage employees during training, increase training retention, and stress the importance to change their behaviors and utilize safe practices in regards to allergens. We compared both quick and full-service restaurants’ food-allergy training methods in this study …
Identifying And Assessing Conflicts Between Future Development And Current Migratory Bird Habitat Around Farmington Bay, Utah, Aubin A. Douglas
Identifying And Assessing Conflicts Between Future Development And Current Migratory Bird Habitat Around Farmington Bay, Utah, Aubin A. Douglas
All Graduate Plan B and other Reports, Spring 1920 to Spring 2023
Every year, the Great Salt Lake (GSL) and its associated wetlands provide critical habitat for over 250 migratory bird species from both the Pacific and Central Flyways. The GSL borders the Wasatch Front, which is the fastest growing and most populous region in Utah. To support the ever-increasing working population, the government of Utah aspires to increase the robust economic growth of the region through economic incentives and development of infrastructure. As this area continues to develop, greater pressure will be placed on the surrounding natural resources, including the GSL, its wetlands, and the open space and agricultural land that …
Lead Poisoning In Maine's Common Loons: Examining Biological And Social Dimensions, Brooke S. Macdonald
Lead Poisoning In Maine's Common Loons: Examining Biological And Social Dimensions, Brooke S. Macdonald
Electronic Theses and Dissertations
Lead poisoning from ingested fishing tackle is a well-documented conservation concern for adult common loons in the Northeastern United States. To mitigate this issue, the state of Maine began implementing restrictions on lead tackle use in 2002, with new legislation added in 2016 and 2017. In addition to legislative action there have been various non-regulatory strategies employed in Maine to help raise awareness, such as the Fish Lead Free campaign. Human behavior is the root cause of lead fishing tackle in aquatic environments, and also can determine the success of legislative and educational efforts. Measuring underlying factors that influence behaviors, …
Efficacy Of Translocation As A Management Tool For Urban Mule Deer In Utah, Channing R. Howard
Efficacy Of Translocation As A Management Tool For Urban Mule Deer In Utah, Channing R. Howard
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
An increase in urbanization in the United States has led to an increase in human-wildlife interactions with deer (Odocoileus spp.) which have been able to adapt and thrive in these urban environments. In Utah, urbanization has occurred along the Wasatch Front which was once traditional mule deer (Odocoileus hemionus) winter range habitat. This urban expansion coupled with an increasing use of these urban areas by mule deer, have led to increasing conflicts with deer. Overabundant urban deer have led to increased concerns over safety from deer-vehicle collisions, and damage to personal property including gardens and landscaping. …
Assessing Rice Consumers’ Preferences And Willingness To Pay In Haiti, Cleeford Pavilus
Assessing Rice Consumers’ Preferences And Willingness To Pay In Haiti, Cleeford Pavilus
Graduate Theses and Dissertations
In the last 30 years, rice has become the number one food staple in Haiti, and rice imports have outpaced domestic production to supply the country’s increasing rice demand. Policy makers support the claim that increasing local rice supply will not only reduce the dependency on imported rice but also upheave the national economy. However, there is a lack of information on Haitian consumers’ preferences for rice to aid the development of the local rice supply chain. This research aims to bridge that gap by assessing Haitian consumer preferences and willingness to pay for selected rice quality characteristics. The results …
Microbiota Metabolic Product Deoxycholic Acid Prevents Campylobacter Jejuni Chicken Colonization Through Modulating Ceca Anaerobes, Bilal Ali Alrubaye
Microbiota Metabolic Product Deoxycholic Acid Prevents Campylobacter Jejuni Chicken Colonization Through Modulating Ceca Anaerobes, Bilal Ali Alrubaye
Graduate Theses and Dissertations
Campylobacter jejuni is a prevalent infectious enteritis mainly foodborne from chickens. Despite of reducing C. jejuni food contamination dramatically decreases campylobacteriosis, few effective approaches are available for the bacterial reduction in chickens. The aim of this study was to use microbial metabolic product deoxycholic acid (DCA) to reduce C. jejuni chicken colonization. Broiler chicks were fed 0 or 1.5 g/kg DCA, lithocholic acid (LCA), or urodeoxycholic acid (UDCA) in diets or orally gavaged with cholic acid (CA, 1.5g/kg body weight). Birds were also transplanted with DCA modulated anaerobes (DCA-Anearo) or aerobes (DCA-Aero). Birds were infected with 109 CFU/bird human clinical …
Aqueous Ozone Inactivation Of Viruses And Bacteria On Biotic And Abiotic Surfaces, Cailin Dawley
Aqueous Ozone Inactivation Of Viruses And Bacteria On Biotic And Abiotic Surfaces, Cailin Dawley
Graduate Theses and Dissertations
Produce is susceptible to contamination by foodborne pathogens. Food service establishments utilize sanitizing agents to reduce microbes on produce surfaces. The research objectives were to evaluate the efficacy of aqueous ozone 1) on the inactivation of viruses and bacteria on produce; 2) on the inactivation of viruses on stainless steel; and 3) against viruses in association with bacteria on produce surfaces. For objective 1, Boston bibb lettuce and cherry tomatoes were spot inoculated with a cocktail of viruses (murine norovirus (MNV) and MS2 bacteriophage) or bacteria (Enterobacter cloacae and Bacillus cereus) and washed for 40 min with samples taken every …
Responsiveness Of Cobb Mv × 700 Broilers To Dietary Amino Acid And Energy Density, Craig William Maynard
Responsiveness Of Cobb Mv × 700 Broilers To Dietary Amino Acid And Energy Density, Craig William Maynard
Graduate Theses and Dissertations
As new broiler crosses are introduced to the industry, it is of paramount importance to understand their nutritional digressions from previous and other modern broilers. In particular, amino acids (AA) and dietary energy have been identified as key drivers of live performance and carcass composition. In addition, increased nutrient density in broiler diets have been linked to an increase in breast muscle myopathies such as white striping and woody breast. Therefore, a series of trials were conducted to determine the responsiveness of live performance, carcass characteristics, and breast muscle myopathies of Cobb MV × 700 broilers to dietary AA and …
Development Of A Methodology For Predicting Consumer Acceptance And Preference Toward Beverages, Shilpa Shailesh Samant
Development Of A Methodology For Predicting Consumer Acceptance And Preference Toward Beverages, Shilpa Shailesh Samant
Graduate Theses and Dissertations
Consumer behavior toward food/beverages is influenced by multisensory attribute perceptions as well as emotional experiences. Traditional methods of sensory testing lack the ability to capture emotional responses and as a result, measuring food/beverage-evoked emotions remains a research challenge. There were three objectives of this dissertation study. Firstly, this study aimed to develop prediction models of acceptance of and preference for basic taste solutions using sensory attribute intensities and emotional responses. Secondly, this study aimed to extend the findings of the first objective to develop prediction models of commercially-available vegetable juice products in terms of (a) acceptance and preference under blind-tasting …
Spatio-Temporal Reconstruction Of Remote Sensing Observations, Kamrul Khan
Spatio-Temporal Reconstruction Of Remote Sensing Observations, Kamrul Khan
Graduate Theses and Dissertations
The USDA Forest Service aims to use satellite imagery for monitoring and predicting changes in forest conditions over time within the country. We specifically focus on a 230, 400 hectares region in north-central Wisconsin between 2003 - 2012. The auxiliary data collected from the satellite imagery of this region are relatively dense in space and time and can be used to efficiently predict how the forest condition changed over that decade. However, these records have a significant proportion of missing values due to weather conditions and system failures. To fill in these missing values, we build spaciotemporal models based on …
Risk And Return Comparisons Of Pre-Harvest Marketing Strategies, John Leander Turner V
Risk And Return Comparisons Of Pre-Harvest Marketing Strategies, John Leander Turner V
Graduate Theses and Dissertations
This paper analyzes risk and returns associated with pre-harvest corn grain marketing strategies for the state of Arkansas. Farming is characterized by a volatile environment. Numerous risks are taken by producers in order to provide commodities that are bought and sold by various parties in the supply chain. Price, yield, and production costs vary daily and can have large variation between years. Risk and Return Comparisons of Pre-harvest Marketing Strategies examines the effectiveness of using pre-harvest marketing strategies to enhance returns and to mitigate inherent price risk in the Memphis cash corn market. Thirteen strategies are compared to the October …
A Role For Epac1 And Epac2 In Nociceptor Hyperexcitability And Chronic Pain After Spinal Cord Injury, Samantha Berkey
A Role For Epac1 And Epac2 In Nociceptor Hyperexcitability And Chronic Pain After Spinal Cord Injury, Samantha Berkey
Dissertations & Theses (Open Access)
Chronic pain is a major complaint of those living with spinal cord injury (SCI), affecting 65-80% of the SCI population, but the treatment options remain limited or non-existent. The cAMP sensor EPAC has previously been shown to play a key role in chronic inflammatory and neuropathic pain, though the contribution from each of its two main isoforms, EPAC1 and EPAC2, is unclear. Here I test the hypothesis that both EPAC1 and EPAC2 play a key role in the maintenance of persistent nociceptor hyperexcitability and chronic pain after SCI.
Using both a T9 SCI mouse model and a T10 SCI rat …
Consumer Perceptions Of Labeling Claims On Poultry Products, Sarah Townley
Consumer Perceptions Of Labeling Claims On Poultry Products, Sarah Townley
Agricultural Education, Communications and Technology Undergraduate Honors Theses
An increasing number of consumers wants more knowledge of how the food they eat is produced, and specifically, how animals used in the production of their food are raised. One method consumers use to become more aware of production practices behind the food they purchase and consume is simply reading food labels. Labeling claims can be defined as textual, pictorial, graphic, or symbolic representation that either explicitly states or implies that a food product has a specific set of properties supported by a certification process. The purpose of this study is to gather data regarding consumer knowledge and understanding of …
Effects Of An Educational Intervention On Exclusive Breastfeeding Rates In Marshallese Mothers Residing In The U.S., Connor K. Otto
Effects Of An Educational Intervention On Exclusive Breastfeeding Rates In Marshallese Mothers Residing In The U.S., Connor K. Otto
The Eleanor Mann School of Nursing Undergraduate Honors Theses
Background: The largest population of Marshallese immigrants in the Contiguous U.S. resides in Northwest Arkansas. Despite adequate access to healthcare, the Marshallese face many health disparities, perhaps partly due to the language barrier they face in healthcare settings and education. Regarding breastfeeding rates, women in the Marshall Islands have a significantly higher rate of exclusive breastfeeding than in Marshallese women residing in the U.S. who face cultural barriers. Breastfeeding is positively correlated to many benefits for infants and is recommended exclusively for at least 6 months by pediatric policy organizations.
Objective: The purpose of this research is to examine breastfeeding …
Constructing A Data-Based Mortality Profile For Avian Tower Kills At Telecommunication Towers In Illinois, Rachel Dipietro
Constructing A Data-Based Mortality Profile For Avian Tower Kills At Telecommunication Towers In Illinois, Rachel Dipietro
Theses and Dissertations
During spring and fall seasons, Neotropical migratory passerines travel nocturnally across the Western Hemisphere between their wintering and breeding grounds, often encountering man-made threats. One hazard that has gained considerable publicity in recent decades is the communication tower. While there have been many tower kill studies recorded, there has been no attempt at predicting the risk of towers based on their different attributes (e.g., height, type of light, landscape placement) spatially on a regional scale. The objective of this study was to create seasonal mortality profile maps in GIS for Illinois, based on tower attributes combined with key factors such …
Assessing The Cooling Effects Of Urban Vegetation On Urban Heat Mitigation In Selected U.S. Cities, Qiuyan Yu
Assessing The Cooling Effects Of Urban Vegetation On Urban Heat Mitigation In Selected U.S. Cities, Qiuyan Yu
USF Tampa Graduate Theses and Dissertations
Urban Heat Island (UHI) is a growing problem worldwide. Mitigation of UHI is necessary for cities to adapt to climate change and enhance sustainable development at a city scale. Cooling cities with urban vegetation management is a sustainable solution for urban heat mitigation. Urban vegetation influences urban microclimate through the shading effect, surface roughness, and evapotranspiration. The differences in horizontal and vertical structures of urban vegetation determine the shading effect, surface roughness, and evapotranspiration. Enhancing the cooling effect of urban vegetation requires a comprehensive understanding of how vegetation structure affects UHI. The effects of horizontal structure on land surface temperature …
Compliance And Enforcement For The Exclusive Economic Zone Fisheries Management In The United Republic Of Tanzania, Christian Alphonce Nzowa
Compliance And Enforcement For The Exclusive Economic Zone Fisheries Management In The United Republic Of Tanzania, Christian Alphonce Nzowa
World Maritime University Dissertations
No abstract provided.
Identification And Characterisation Of Novel Phages Of Pectobacterium And Erwinia, Colin Buttimer
Identification And Characterisation Of Novel Phages Of Pectobacterium And Erwinia, Colin Buttimer
PhDs
Losses in crop yields due to disease need to be reduced to meet increasing global food demands associated with growth in the human population. There is a well-recognised need to develop new environmentally-friendly control strategies to combat bacterial crop diseases. There are several crop diseases for which no effective bactericidal agents are currently available, such as potato blackleg and soft rot disease caused by Pectobacterium atrosepticum and other members of soft rot Enterobacteriaceae (Czajkowski et al., 2011). Furthermore, current control measures involving the use of traditional chemicals or antibiotics are losing their efficacy due to the natural development of bacterial …
An Investigation Of Habitat Suitability Factors And Their Interactions For Predicting Gopher Tortoise Habitat, Abigail V. Lavallin
An Investigation Of Habitat Suitability Factors And Their Interactions For Predicting Gopher Tortoise Habitat, Abigail V. Lavallin
USF Tampa Graduate Theses and Dissertations
This thesis evaluates the interaction between four habitat factors vital to the gopher tortoise in Florida. Federally and state listed as threatened throughout its entire range, the gopher tortoise is vital to protect, not only for itself individually but its burrows provide an essential habitat to over 300 species making it a key stone species within its environment. Historic habitat modeling methods are reviewed for the gopher tortoise to highlight the gap on this topic. This research expanded on the methods utilized by Baskaran et al. (2006) evaluating the soil, landcover, percentage of canopy cover and the depth to water …
Hearing And Seeing A Speaker: How Perceptual And Cognitive Factors Modulate The Dynamics Of Audiovisual Speech Perception, Elina Kaplan
Hearing And Seeing A Speaker: How Perceptual And Cognitive Factors Modulate The Dynamics Of Audiovisual Speech Perception, Elina Kaplan
Doctoral Dissertations
In face-to-face conversations, listeners process and combine speech information obtained from hearing and seeing the speaker talk. Audiovisual speech typically leads to more robust recognition of speech, as it provides more information for recognition but also as it helps listeners adjust to speaker idiosyncrasies. The goal of the current thesis was to examine how certain perceptual and cognitive factors modulate how listeners use visual speech to facilitate momentary speech perception and to adjust to a speaker’s idiosyncrasies. Results showed that (older) listeners’ sensitivity to cross-modal synchrony is related to the size of the audiovisual interactions during early perceptual processing. Furthermore, …
Cardiodynamic Associations With Resilience In Undergraduate Students And The Effect Of A Mentorship Intervention, Rachel J. Knetsch
Cardiodynamic Associations With Resilience In Undergraduate Students And The Effect Of A Mentorship Intervention, Rachel J. Knetsch
Electronic Thesis and Dissertation Repository
The National College Health Assessment (NCHA) indicates that a majority of Canadian university students report feeling overwhelmed, stressed, and anxious during their undergraduate studies. Resilience refers to positive adaptation, or the ability to maintain or regain mental health, despite experiencing adversity (Herrman et al., 2011). While autonomic indices have been used to describe chronic physiological stress, the role of heart rate variability (HRV) as an index of resilience remains unclear. This research tested the hypotheses that (1) there is a relationship between HRV and resilience scoresand (2) a mentorship intervention will improve HRV and resilience outcomes. Fifty-seven first year students …