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The Effect Of Blinded Hydration State On Thermoregulation And Performance In Male Cyclists, Jon David Adams

Graduate Theses and Dissertations

Purpose: The purpose of these studies was to observe the effect of dehydration on exercise performance while subjects were blinded to their hydration status. Methods: Study 1: Seven male cyclists (weight: 71±8 kg, body fat: 14±6%, VO2peak: 59.4±6 ml∙kg-1·min-1) exercised for 2 hours on a cycle ergometer at 55% VO2peak, in a hot-dry environment (35°C, 30% rh), with a nasogastric (NG) tube under euhydrated (EUH-NT) and hypohydrated (DEH-NT) conditions. In both trials, thirst was matched by drinking 25 mL every 5 min. In the EUH-NT trial sweat losses were fully replaced via the NG tube. Following the 2 hours of …

The Bicycle, The Unsuitable Substitute:A Feasibility Study Based In Fayetteville, Ar Using A Bicycle As A Year-Round Replacement For An Automobile, Jamey Voorhees

Graduate Theses and Dissertations

Can a bicycle can be used in place of an automobile for everyday transportation and commuting needs? Fayetteville, Arkansas is a bicycle friendly and they plan continue to expand the current trail system improve other components in the future. Alternative transportation forms like the bicycle are important but only if bikes are integrated into traffic which needs to be done in some way that all involved understand their place in the system. By actively participating in this system I have attempted to show that a bicycle is just not feasible as a form of daily transportation in a city like …

Annual Report, 2016-2017, University Of Arkansas Fayetteville. J. William Fulbright College Of Arts And Sciences

College of Arts and Sciences Annual Report

No abstract provided.

Supplying Choice: An Analysis Of School Participation Decisions In Voucher Programs In Dc, Indiana, And Louisiana, Yujie Sude, Corey A. Deangelis, Patrick J. Wolf

School Choice Demonstration Project

Since school voucher funds are public, policymakers fiercely debate how those funds should be spent. A goal of many decision-makers is to ensure that every private school option is “highquality” through program accountability regulations. Private schools, however, have a say in the matter. They can decide whether or not to participate in a private school choice program and likely factor the type and level of program regulations into that decision. We examine the impacts of private school regulations on the supply-side of voucher programs in D.C., Indiana, and Louisiana. Private schools value their autonomy. Therefore, we expect that regulatory burden …

Cost Benefit Analysis Of Genetic Markers In Cattle, Josh Crystal

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Genetic sequencing in beef cattle (L. Bos Taurus) is expected to aid producers select cattle with traits that enhance profitability. Using data from experimental trials conducted with Angus, Brahman, and their reciprocal cross, this project analyzes the profitability of grazing endophyte infected tall Fescue (L. Festuca arundinacea Schreb.) vs. Bermuda grass (L. Cynodon dactylon) pasture. The study is unique in the sense that actual cow-calf breeding failure rates (open cows were not culled) were tracked from 1991 to 1997 on herds that were bred to calf in spring and either exposed to fungal endophyte (L.Acremonium coenophialum Morgan-Jones …

Spatial Variability Of Seedling Disease Pressure In Cotton Fields, Kyle Douglas Wilson

Graduate Theses and Dissertations

Seedling diseases are important factors in cotton stand establishment, and seedling disease pathogens are widespread in fields in Arkansas. Little is known about the variability of seedling disease pressure within fields. With expanded adoption of site-specific management and other precision agriculture approaches, cotton producers are increasingly interested in predicting seedling disease pressure, particularly in spatially variable fields. The cotton seedling disease pathogens include the soilborne pathogens Thielaviopsis basicola, Rhizoctonia solani, Pythium spp., and Fusarium spp. These pathogens can survive in soil for long periods and, and when the environment is conducive, these pathogens can act individually or in combination to …

Effect Of Urinary Urge On Using Urinary Frequency As An Indicator Of Hydration Status, Mackenzie Cale

Health, Human Performance and Recreation Undergraduate Honors Theses

Background: Void Frequency (VF) has recently been determined as a valid and reliable marker of 24-hr hydration status when void urgency is controlled (i.e., urinating at “first urge”). Limitations for real world applicability of this technique are apparent because individuals often void at varying urge levels throughout the day. Purpose: The purpose of this study was to determine if urgency affects the validity of void number as a marker of hydration status. We hypothesized that void urgency would not affect the validity of void number as a way to assess hydration status. Methodology: Participants included 18 females and 13 …

Muscle Oxidative Phenotype In The Progression Of Cancer-Cachexia, Haley N. Mccarver

Health, Human Performance and Recreation Undergraduate Honors Theses

Cancer is one of the leading causes of death across the world. Cancer-cachexia is a serious complication induced by cancer resulting in whole body muscle wasting and is responsible for up to 40% of cancer related deaths. Underlying mechanisms of cancer-cachexia are not well understood; however, a loss in oxidative metabolism in skeletal muscle is apparent in cancer-cachexia. PURPOSE: To examine oxidative phenotype of skeletal muscle in tumor bearing mice during progression of cancer-cachexia. METHODS: Mice were implanted with Lewis Lung Carcinoma (LLC) or sham phosphate buffered saline (PBS) at 8 weeks of age. The tumor was allowed to progress …

The Acute Effects Of Caffeine And L-Theanine On Cognition In Older Adults, Lauren Tilley

Health, Human Performance and Recreation Undergraduate Honors Theses

The acute effects of L-theanine and Caffeine on cognition in older adults

Tilley, L., Gray, M., Stone, M., & Binns, A.; Human Performance Lab; University of Arkansas; Fayetteville, AR.

Introduction: Cognitive decline is an impairment that affects many adults and has the potential to be decelerated. Previous studies show that caffeine and L-theanine positively affect cognition in a young population. L-theanine is an amino acid found in tea that produces a relaxation affect. Therefore, the purpose of this study is to determine the acute effects of caffeine and L-theanine on cognition in older adults. Methodology: Fifty-three older adults …

Journal Of Food Law & Policy - Spring 2017, Journal Editors

Journal of Food Law & Policy

After Donald Trump’s victory last November, we put out a call for brief essays examining what happened, what’s likely to happen, and what policymakers and advocates can do to keep pushing forward. The response was extraordinary. We received thought provoking submissions on a number of important topics, including antitrust, trade policy, food safety, and labor, among others. Instead of running a standard issue comprised of legal articles—with essays as an accompaniment—we decided to reverse the format and devote the bulk of this issue to these essays. The result is a penetrating and timely look at the state of food law …

Implementing The National Bioengineered Food Disclosure Standard, Lesley K. Mcallister

Journal of Food Law & Policy

In July 2016, the National Bioengineered Food Disclosure Law was passed to establish a mandatory national system for disclosing the presence of genetically-engineered material in food (GMOs). The federal law preempts state and local initiatives to create labeling systems. This essay first analyzes the benefits and drawbacks of having a national GMO law rather than a patchwork of state laws. Then it provides commentary on how the USDA can create an effective and accessible labeling system, using scannable Quick Response (QR) codes.. The essay envisions a retail food system in which all consumers can easily and usefully obtain reliable information …

Optical Imaging Of Metabolic Adaptability As A Biomarker For Metastatic Potential In Breast Cancer Cells, Mason G. Harper

Biomedical Engineering Undergraduate Honors Theses

Breast cancer metastasis is the main cause for mortality in breast cancer patients. However, knowledge of metastatic recurrence is limited, and there is a need to understand metastatic recurrence in order to treat breast cancer patients more effectively. Highly invasive metastatic breast cancer has shown to exhibit metabolic adaptability, transitioning from glycolysis to oxidative phosphorylation in the presence of microenvironmental stress. NADH and FAD are naturally occurring cofactor products during glycolysis and oxidative phosphorylation, respectively, and they are of particular importance during these metabolic processes due to their endogenous fluorescence. Measuring the ratio of fluorescence intensities of these cofactors through …

After The White House Garden: Food Justice In The Age Of Trump, Garrett M. Broad

Journal of Food Law & Policy

It’s debatable whether President and First Lady Obama’s White House garden was a positive or negative symbol to the community food justice movement—but it did send a signal. This essay speculates what, if anything, the Trump administration will signal to these community food justice activists. It also recommends a potential strategy for grassroots food justice advocates fighting for already limited resources.

Food Justice In The Trump Age: Priorities For Urban Food Advocates, Nevin Cohen, Janet Poppendieck, Nicholas Freudenberg

Journal of Food Law & Policy

This essay outlines priorities for food advocates following the election of President Donald Trump. Specifically, this essay advocates for: 1. preservation of snap, 2. prevention of industry deregulation, and 3. sustainment of regional food systems. In its analysis, this essay examines each of the potential conservative-back counter proposals for these priorities.

Predicting The Onset Of Parturition By Determining Calcium In Prepartum Milk Of Sheep, Lensey Watson

Animal Science Undergraduate Honors Theses

Multiple methods of pregnancy detection can be used in sheep production. The gestation period for sheep is usually between 144 and 150 days; however, depending on the breed and age of the ewes, this number can vary. A breeding marker, such as a breeding crayon, is used to detect when the ewe is bred by the ram, and the date the ewe will lamb is typically calculated based on an average 145-day gestation. Unfortunately, this method provides only a rough estimate of when the ewe could lamb. In addition, because sheep routinely give birth to multiples (twins, triplets, and, sometimes, …

Eating Is Not Political Action, Joshua Galperin, Graham Downey, D. Lee Miller

Journal of Food Law & Policy

To create policy at the interface of the centrally important and overlapping American ideals of agriculture and the environment, there are two options. Passive governance fosters markets in which participants make individual choices that aggregate into inadvertent collective action. In contrast, assertive governance allows the public, mediated through elected officials, to enact intentional, goal-oriented policy. This essay contends that the latter option, assertive governance, is the only appropriate means of creating harmony between agriculture and the environment it depends upon.

Identification Of Molecular Signatures Of Environmental And Nutritional Stress Responses In Poultry, Phuong Hieu Nguyen

Graduate Theses and Dissertations

Poultry production plays an important role in the food supply and security for billions of people. Poultry meat is considered the most efficient, nutritious source of protein, without religious taboos, and is relatively inexpensive. However, the poultry industry is facing substantial challenges. The global environmental temperature has experienced dramatic changes in the last few years. Modern broilers are not well adapted to environmental challenges (heat and cold stress), which have resulted in heavy economic loss in the poultry industry worldwide. In addition, the use of feed restriction regimens in management of breeders as well as the transportation of young chicks …

Bridging The Gap: An Exploratory Study On Classroom-Workplace Collaborations, Katelynn Dixon

Graduate Theses and Dissertations

“Bridging the gap” between theory and practice has historically been challenging. There is a definite lag between textbook knowledge and “real-world” application. For decades colleges have been adopting different Executive-In-Residence (EIR) models to help with this concern. Various EIR models include bringing industry professionals into the classes as guest speakers, hosting a series of one-on-one meetings, and conducting seminars and workshops. There is little to no research on EIRs in the Hospitality and Tourism field. In today’s modern time, the hospitality industry is a forerunner in the service industry, thus making this research extremely beneficial to the body of knowledge …

Exploring The Impacts Of Study Abroad On Hospitality Student’S Perceptions Of Emotional Intelligence, Diversity And Sustainability, Jordan Glynn Griffin

Graduate Theses and Dissertations

This study investigated if there was a significant difference in hospitality students who did and did not participate in a study abroad program to determine if study abroad had an impact on their emotional intelligence, diversity, and sustainability awareness. The results of this study will assist both hospitality education and study abroad by providing information.

A descriptive, four-section survey was distributed online via Qualtrics utilizing snowball sampling. A total of 110 respondents participated in the study; 72 nonstudy abroad and 38 abroad. The respondents completed the questionnaire that measured emotional intelligence, career longevity, perceptions of diversity, sustainability awareness, and demographic …

The Use Of Probiotics To Control The Microbial Load Present In Commercial Broiler Chicken Hatch Cabinets As An Alternative To Formaldehyde Fumigation, Lucas Elzie Graham

Graduate Theses and Dissertations

Formaldehyde has been used for decades as a disinfectant in the poultry hatchery. Hatch cabinets are treated with formaldehyde to control the microbial bloom that occurs inside of the hatch cabinet as the hatch progresses. Even with formaldehyde being a known human carcinogen and the detriment that it has on living creatures millions of chicks are exposed to formaldehyde in the hatch cabinet. In these experiments we tested a lyophilized probiotic spray inside of the hatch cabinets from day nineteen to day twenty one to control the microbial bloom that occurs. Hatch cabinet environments were sampled in six experiments. Media …

In Ovo Evaluation Of Floramax-B11 On Marek's Disease Hvt Vaccine Protective Efficacy, Hatchability, Microbiota Composition, Morphometric Analysis, And Salmonella Enteritidis Infection In Broiler Chickens, Kyle Dean Teague

Graduate Theses and Dissertations

It has previously been shown that effective probiotics can accelerate gut maturation and the development of a normal microflora in poultry. This results in increased resistance to enteric pathogens encountered by chicks early in life. Our objective in experiments 1 and 2 was to evaluate the effect of in ovo administration of FloraMax®-B11 (FM) on Marek’s disease (MD) herpesvirus of turkeys (HVT) vaccine protective efficacy. In Exp. 1, day 18 White Leghorn embryos were randomly distributed in four groups, 1) HVT vaccinated, no MDV challenge, 2) HVT + FM vaccinated, no MDV challenge, 3) HVT vaccinated, challenge with virulent MDV, …

Development Of A One Pass Microwave Heating Technology For Rice Drying And Decontamination, Deandrae Lynette Smith

Graduate Theses and Dissertations

An industrial microwave (MW) system operating at 915 MHz frequency was used to dry high moisture content (MC) (23% to 24% wet basis) medium-grain rough rice samples (cv. Jupiter). The rice beds were contained in a modified tray that accommodated up to 9 kg of rice separated by thin fiberglass mesh in 3 kg increments. Each layer of rice was fitted with fiber optic sensors connected to a real time data logger during MW treatments. It was determined that drying rice to a MC of 14% to 16% was feasible with the application of MW specific energy at 600 kJ/kg-grain …

Influence Of Exogenous Phytase Level And Interaction With Supplmental Xylanase On Live Performance And Phosphorus Retention Of Broilers, Peyton Gilbert

Graduate Theses and Dissertations

Two 3-week experiments were conducted, each using 480 day-old male broilers placed randomly among 96 battery cages (5 per cage; 680cm2 per bird), to evaluate the influence of phytase supplementation, with or without supplemental xylanase, on bird performance. Individual body weights and cage feed weights were taken on days 0, 7, 14, and 21, and mean BW, body weight gain (BWG), feed intake (FI), and FCR over each period calculated. Mortality was recorded daily and used to calculate livability and adjust FCR in both trials. In trial 2, excreta was collected by cage from 14 to 21 days for bone …

The Effect Of Omega-3 Fatty Acids On Energy Metabolism, Energy Intake, And Metabolic Response In Normal Weight And Overweight And Obese School Aged Children (8-12 Years), Charlayne Mitchell

Graduate Theses and Dissertations

Background: Obesity is a major health concern in the United States. Omega-3 fatty acids (O3FA) have been observed to improve metabolic health and therefore might be useful in treatment of obesity. However, little is known regarding the effect of O3FA on school aged normal weight and overweight children.

Objective: The objective of this thesis was to determine if habitual intake of O3FA at breakfast improves energy metabolism, appetite, and metabolic response in overweight and obese school-aged children.

Design: Twenty healthy, normal weight (NW; n = 11) and overweight (OW; n = 9) children aged 8-12 years were randomly assigned to …

Hydration Biomarkers And Water Intake In 3-13 Year-Old Boys, Zoe P. Mckinney

Health, Human Performance and Recreation Undergraduate Honors Theses

Background/Introduction: Hydration is an important aspect of health in children. Despite being important, limited information is available regarding children’s water intake and hydration. Interestingly, most studies assess hydration status based on a single random urine sample instead of a 24-h one. Purpose: The aim of this study was to examine the prevalence of dehydration and water intake in boys 3 to 13 years-old. Methods: Forty-six healthy boys were recruited for the study. Each subject recorded food and fluid intake in a diary on a Saturday and Sunday. They also collected their 24-h urine on Sunday. The 24-h sample was analyzed …

Validity Of Daytime Urinary Frequency As A Tool For Assessing Hydration, Monica Ziebart

Health, Human Performance and Recreation Undergraduate Honors Theses

Introduction: It is known that 24-h void number is a valid way to assess hydration status. However, no studies have examined if urinary frequency just during the waking hours (~18 h) is a valid indicator of hydration status. Purpose: This study was conducted in order to determine if void number during only the waking hours was a valid indicator of hydration status compared to total voids over a 24-hour period. Methods: The subjects in this study consisted of 14 males and 18 females 18-80 yrs old who were healthy and not currently taking any body fluid altering medications. This study …

Hydration Markers And Water Intake In 3 To 13 Year-Old Girls, Cody Shopper

Health, Human Performance and Recreation Undergraduate Honors Theses

INTRODUCTION: Recent data from the National Health and Nutrition Examination Survey (NHANES) showed that more than 50% of children in the U.S. are hypohydrated. However, this assessment was based on a random single urine void which has several limitations in assessing hydration. Studies have shown that greater water consumption is associated with improved mood, cognition, increased physical activity and better overall nutrition. OBJECTIVE: To assess water intake and hydration status in 3-13 year-old girls. METHODS: 39 girls age 3-13 years-old (6.9 ± 2.9 y) collected their own urine samples for 24-hours on a Sunday. Subjects also recorded …

A Call To Action: The New Academy Of Food Law & Policy, Emily M. Broad Leib, Susan A. Schneider

Journal of Food Law & Policy

The food system is affected by unique and complex laws. These laws call for a new generation of legal practitioners and scholars. This essay announces the creation of the Academy of Food Law and Policy. The Academy creates a network of law professors researching, teaching, and mentoring in food law and policy.

Organic Agriculture Under The Trump Administration, Marne Coit

Journal of Food Law & Policy

This essay will examine the implications of the policies of the upcoming Trump administration on the integrity of the National Organic Program (NOP), the regulations promulgated under the Organic Foods Production Act (OFPA). Advocates fears of weakening organic standards are likely to become reality under the Trump administration. Support for organic may be dependent on high returns for large agricultural producers. However, there is a negative correlation between larger agri-businesses entering the organic market and the erosion of the organic standards. The Trump administration will likely continue down the path of supporting larger agribusinesses—to the detriment of not only smaller, …

Fomenting Democracy: The Case For Federal – Local Cooperation, Marilyn Sinkewicz, Jess Gilbert, Calvin Head

Journal of Food Law & Policy

This essay profiles a program in a rural, black Mississippi community called Youth-in-Agriculture. This case study of Mileston, Mississippi depicts the collaborative efforts of the federal government and community organizations through nearly a century. This essay also describes the ways in which the Trump administration could most support agricultural communities like Mileston, MS.