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Full-Text Articles in Life Sciences

Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan Dec 2020

Corn And Soybean Response To Wastewater-Recycled Phosphorus Fertilizers, Shane Ylagan

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

The ability to recycle phosphorus (P) from wastewaters could provide a sustainable, continuous source of P that might also help protect surface water quality from P enrichment. The mineral struvite (MgNH4PO4·6H2O) is an understudied material that can be created from Pcontaining wastewater and has been shown to have agricultural fertilizer value. The objective of this study was to evaluate the effects of electrochemically precipitated struvite (ECST), chemically precipitated struvite (Crystal Green; CG), diammonium phosphate (DAP), monoammonium phosphate (MAP), rock phosphate (RP), and triple super phosphate (TSP) on corn (Zea mays) and soybean (Glycine max) response in a 79-day greenhouse ...


Food Safety Risk In An Indoor Microgreen Cultivation System, Gina Marie Misra May 2020

Food Safety Risk In An Indoor Microgreen Cultivation System, Gina Marie Misra

Theses and Dissertations

Microgreens are immature sprouts of edible plants, sharing some similarities with sprouted seeds and petite leafy greens. Since they are most often grown in containers in buildings or greenhouses, they present a new area for food safety research at the intersection of the built environment and produce farming. Contamination by human pathogens has been extensively studied in other types of produce typically eaten raw, including sprouted seeds, which have been implicated in numerous outbreaks of salmonellosis over the last several decades. There is a paucity of knowledge about the microgreen sector of the fresh-cut industry; thus, it was determined that ...


Florpyrauxifen-Benzyl Use In Arkansas Rice (Oryza Sativa L.), Hannah Elizabeth Wright May 2020

Florpyrauxifen-Benzyl Use In Arkansas Rice (Oryza Sativa L.), Hannah Elizabeth Wright

Theses and Dissertations

Florpyrauxifen-benzyl is a synthetic auxin herbicide which was commercially released in 2018 to combat troublesome grass, broadleaf, and sedge weed species in rice. Many factors may influence cultivar response to a new herbicide; hence, it is important to understand factors contributing to crop sensitivity to an herbicide in order to make appropriate recommendations. Prior to the onset of this study, research had been conducted on florpyrauxifen-benzyl in a flooded environment; however, none had been executed in a non-flooded environment. Experiments were conducted to evaluate the response of a long-grain variety ‘CL111’, a medium-grain variety ‘CL272’, and a long-grain hybrid ‘CLXL745 ...


Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton May 2020

Wayne E. Sabbe Arkansas Soil Fertility Studies 2019, Nathan A. Slaton

Research Series

Rapid technological changes in crop management and production require that the research efforts be presented in an expeditious manner. The contributions of soil fertility and fertilizers are major production factors in all Arkansas crops. The studies described within will allow producers to compare their practices with the university’s research efforts. Additionally, soil-test data and fertilizer sales are presented to allow comparisons among years, crops, and other areas within Arkansas.


Mechanistic Understanding Of Leaky Gut Syndrome In Heat Stressed Broiler Chickens, Jennifer Hoover May 2020

Mechanistic Understanding Of Leaky Gut Syndrome In Heat Stressed Broiler Chickens, Jennifer Hoover

Animal Science Undergraduate Honors Theses

Abstract

Broilers, meat-type chickens, are bred for high growth rate and meat yield. These chickens have specific challenges due to heat stress. The adverse effects that impact these chickens have lead us to study the mechanisms involved. The objective of this study is to evaluate the expression of genes involved in intestinal permeability of heat- stressed broiler chickens. All analyses are on previously collected tissues. A total of 600 one day old Cobb 500 male chicks were weighed and randomly assigned to 12 environmental chambers. Ambient temperature in the chambers was gradually decreased from 32˚C on d 1 to ...


El Baloncesto Es Vida: A Look Into Strength And Conditioning, Physical Therapy, And Coaching During My Internship Abroad, Jessica Doublesin May 2020

El Baloncesto Es Vida: A Look Into Strength And Conditioning, Physical Therapy, And Coaching During My Internship Abroad, Jessica Doublesin

Health, Human Performance and Recreation Undergraduate Honors Theses

Introduction: An experience abroad can help a person grow in confidence and knowledge and allow them to immerse themselves in a new culture. During my time in Valencia, Spain, I was able to work at a youth basketball club, CB L’Horta Godella, alongside the club’s strength and conditioning coaches and the physical therapist and be a coach for the young athletes. The fact that I lived with a Spanish family and had an open mindset towards making friends and exploring new things allowed me to grow closer to the culture in Spain. By using my knowledge and passion ...


Effect Of Dietary Spirulina Platensis On Stress Levels And Growth Of Female Broiler Chickens, Victoria Tarkington May 2020

Effect Of Dietary Spirulina Platensis On Stress Levels And Growth Of Female Broiler Chickens, Victoria Tarkington

Animal Science Undergraduate Honors Theses

This study measured the effects of dietary Spirulina platensis supplementation on heterophil to lymphocyte ratio, footpad lesions, and growth performance parameters. One hundred and eighty Ross 708 broiler females were randomly divided evenly into fifteen pens with three dietary treatments for a total of five replications per treatment (twelve birds per replicate) for five weeks. The different treatments were a control diet of 20% crude protein, a diet of 17% crude protein, and a diet of 17% crude protein with 10% S. platensis added to the feed. Body weight, feed intake, and mortality rate was not significantly different between treatments ...


Effects Of Asthma On Lung Function, Aerobic Fitness, And Physical Activity Levels In Young Adults, Trey Deal May 2020

Effects Of Asthma On Lung Function, Aerobic Fitness, And Physical Activity Levels In Young Adults, Trey Deal

Health, Human Performance and Recreation Undergraduate Honors Theses

Background: Asthma is one of the most commonly diagnosed conditions in the United States. Research has shown that one form of asthma, exercise-induced bronchoconstriction, is experienced by the overwhelming majority of individuals with the condition during physical activity, potentially causing fear and avoidance of physical activity in the future. Physical inactivity could have several negative health implications, including lower lung function and aerobic fitness levels. Purpose: The purpose of this study is to compare lung function, aerobic fitness, and physical activity levels between young adults with asthma to those without asthma. The hypothesis is that there will be a statistically ...


An Analysis Of Perception Vs. Reality In Physical Fitness And The Effect Of Fitness Testing On Physical Activity In College Students, Sarah Schwartz May 2020

An Analysis Of Perception Vs. Reality In Physical Fitness And The Effect Of Fitness Testing On Physical Activity In College Students, Sarah Schwartz

Health, Human Performance and Recreation Undergraduate Honors Theses

Background. There is limited knowledge on whether college students are as fit as they believe themselves to be, or if discovering discrepancies in their understanding of their fitness will impact their behavior. Purpose. The purpose of this study was to examine perceptions of fitness in college students and the effect fitness testing has on future behavior and intentions. Methodology. A sample of 28 undergraduates at the University of Arkansas, ages 18 to 25, were recruited to participate in an in-person fitness assessment during which, the five health-related components of fitness were measured. Prior to the assessment, participants were asked a ...


Impact Of Selected Infrared Wavelengths Treatment On Inactivation Of Microbes On Rough Rice, Rebecca Bowie May 2020

Impact Of Selected Infrared Wavelengths Treatment On Inactivation Of Microbes On Rough Rice, Rebecca Bowie

Food Science Undergraduate Honors Theses

Formation of harmful microbes and their associated mycotoxins on rough rice during storage present negative socioeconomic impacts to producers and consumers. The objective for this study was to investigate the impact of treating rough rice with selected infrared (IR) wavelengths at different IR intensities and heating durations, followed by a tempering step for further inactivation of microbes (mold and bacteria) on the grain. Freshly-harvested long-grain, hybrid, rough rice (XL 745) with initial moisture content (IMC) of 18.4% wet basis (w.b.) was used. Two-hundred grams (200 g) of the samples were treated at different IR wavelengths (λ) which were ...


The Perceptions Of Professionals, Faculty, And Students Regarding The Implementation Of An Agricultural Communications Degree Program In The United Kingdom, Abigail Taylor May 2020

The Perceptions Of Professionals, Faculty, And Students Regarding The Implementation Of An Agricultural Communications Degree Program In The United Kingdom, Abigail Taylor

Agricultural Education, Communications and Technology Undergraduate Honors Theses

The purpose of this study was to determine the perceptions of professionals, faculty, and students regarding the implementation of an agricultural communications degree program in the United Kingdom. It aimed to gather detailed opinions to aid in the planning of future agricultural communications disciplines. This study used a qualitative approach in the form of interviews. Interviews were designed to gain in-depth opinions on four different research objectives. Subjects were pooled from three different subject groups: Professionals, faculty, and students. Subjects expressed that writing and journalistic skills were extremely important for agricultural communications graduates to possess. Interpersonal skills were also useful ...


Effect Of Charged Lipids On The Ionization Behavior Of Glutamic Acid Containing Transmembrane Helices, Brooke Nunn May 2020

Effect Of Charged Lipids On The Ionization Behavior Of Glutamic Acid Containing Transmembrane Helices, Brooke Nunn

Chemistry & Biochemistry Undergraduate Honors Theses

Transmembrane proteins make up critical components of living cells. Protein function can be greatly impacted by the charged state of its respective components, the side chains of amino acid residues. Thus far, in the lipid membrane, little is known about the properties of residues such as glutamic acid. To explore these properties, I have included glutamic acid in a suitable model peptide-lipid system for fundamental biophysical experiments. Within the system, I have placed a glutamic acid residue instead of leucine in the L14 position of the helical hydrophobic peptide GWALP23 (acetyl-GGALWLALALALAL14ALALWLAGA-amide). Substitutions of glutamine and aspartic acid serve ...


Effects Of A Noni-Supplemented Diet On Intestinal Tight Junction Proteins And Stress Biomarkers In Heat-Stressed Broiler Chickens, Guillermo Tellez May 2020

Effects Of A Noni-Supplemented Diet On Intestinal Tight Junction Proteins And Stress Biomarkers In Heat-Stressed Broiler Chickens, Guillermo Tellez

Poultry Science Undergraduate Honors Theses

Heat stress hampers gut health by impeding its ability to absorb nutrients which leads to a lower feed efficiency and sicker birds. Therefore, there is a critical need to identify mechanism-based strategies to alleviate these effects. Polynesian poultry farmers have been supplementing broiler feed with Morinda Citrifolia (Noni), a medicinal plant high in anti-oxidants, to address this problem. The purpose of the present study was to evaluate the effect of Morinda Citrifolia (Noni)-supplementation on the expression of tight junction proteins. Male Broilers (Cobb 500, 3 wks, n=480) were subjected to 2 environmental conditions (TN, 24°C vs. HS ...


Food Accessibility Related To Double Your Dollar Program, Julia Carlson May 2020

Food Accessibility Related To Double Your Dollar Program, Julia Carlson

Human Nutrition and Hospitality Management Undergraduate Honors Theses

The Double Your Dollar (DYD) Program is a program that gives Supplemental Nutrition Assistance Program (SNAP) beneficiaries and Senior Farmers’ Market Nutrition Program (SFMNP) participants match dollars to spend at local farmers markets. Users are able to spend these dollars on fruits, vegetables, eggs, meats, dairy, jam/jelly, honey and food producing plants. DYD’s goal is to incentivize healthy eating among individuals of low income, promote local purchases, and increase spending at farmers markets. Food insecurity effects over 60,000 individuals in Washington and Benton county. With food accessibility being an area of concern in Northwest Arkansas, programs like ...


Characterization Of Jasmine Rice Cultivars Grown In The United States, Anastasia Mills May 2020

Characterization Of Jasmine Rice Cultivars Grown In The United States, Anastasia Mills

Food Science Undergraduate Honors Theses

Jasmine rice from Thailand accounts for about 60-70% of U.S. imported rice, primarily due to its preference by ethnic Asians as well as general American population. Recently new U.S. jasmine rice cultivars have been developed independently at three rice research stations in Arkansas, California, and Louisiana, but their properties have not been characterized. The objective of this research was to characterize and compare the physical appearance, chemical composition, thermal and pasting properties, cooked rice texture and starch structures of the newly-developed U.S. jasmine rice from Arkansas, California and Louisiana, to be compared with jasmine rice samples from ...


The Biofiltration Ability Of Asparagus Densiflorus To Remove Sulfur Dioxide From The Indoor Atmosphere, Rhiannon De La Rosa May 2020

The Biofiltration Ability Of Asparagus Densiflorus To Remove Sulfur Dioxide From The Indoor Atmosphere, Rhiannon De La Rosa

Horticulture Undergraduate Honors Theses

Sulfur dioxide is an inorganic compound (IC) and air pollutant that causes health risks in humans at concentrations as small as 6 ppm. The buildup of sulfur dioxide in enclosed indoor spaces is therefore a concern to human health, especially since the average person spends 90% of his/her time indoors. This study focused on decreasing a sulfur dioxide concentration in a cost-effective and simple way—by using botanical biofiltration, or the uptake of pollutants by plants. Research in biofiltration has focused mostly on the remediation of volatile organic compounds (VOCs) and which plant species are most proficient at VOC ...


Effect Of Ph And Lipid Composition On Membrane-Spanning Helices With Glutamic Acid Examined By Solid-State Nmr, Kelsey Marr May 2020

Effect Of Ph And Lipid Composition On Membrane-Spanning Helices With Glutamic Acid Examined By Solid-State Nmr, Kelsey Marr

Chemistry & Biochemistry Undergraduate Honors Theses

Transmembrane proteins constitute about 30% of the proteins in a mammalian cell and are involved in major biological processes. The dynamic properties of membrane proteins and the ionization states of particular side chains are important for biological function. The biophysical properties of membrane proteins nevertheless can be difficult to decode, particularly for glutamic acid in the lipid environment of cell membranes. To study the ionization of glutamic acid in transmembrane peptides, guest glutamic acid residues were substituted into the well-defined model helix of GWALP23 (acetyl-GGAL4WLALALALALAL16ALWLAGA-amide). These guest residues were placed at position L16 or L4 and specific 2H-labeled alanine residues ...


The Fusion Of Fashion And Rap Music, Sterling Smith May 2020

The Fusion Of Fashion And Rap Music, Sterling Smith

Apparel Merchandising and Product Development Undergraduate Honors Theses

This project reviewed the relevant literature on the link between Hip-Hip and fashion, determined the frequency of brands being mentioned in the discographies of the artists chosen, and explained why it is important to know which brands are being mentioned by the artists chosen. The media we consume all means something, and this project determined what the Hip-hop music medium tells us about the fashion industry, and what brands artists choose to wear and endorse.


The Economics Of On-Farm Rice Drying In Arkansas, Clayton Parker May 2020

The Economics Of On-Farm Rice Drying In Arkansas, Clayton Parker

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Globally, rice producers are faced with the temporal problem of deciding the optimal time to being rice harvest. When harvested, paddy rice is typically at a moisture content (HMC) between 15 and 22%. Upon delivery, the rice is subsequently dried by the mill to a moisture content (MC) of 12.5%. Riceland Foods Inc., the largest miller of rice in the world, uses a stair-step pricing model to charge farmers to dry in price/unit as the MC of grain decreases from a range of +22% to 13.5%. This study estimates an alternative linear relationship in the stair-step model ...


Apparel Fit Evaluations Of 3d Scans Via Eye-Tracking, Lauren Bouvier May 2020

Apparel Fit Evaluations Of 3d Scans Via Eye-Tracking, Lauren Bouvier

Apparel Merchandising and Product Development Undergraduate Honors Theses

The primary objective of this study is to identify the differences in apparel fit ratings when represented by a 2D or 3D display in an effort to increase customer satisfaction and reduce the rate of returns, as well as develop an understanding of consumer shopping behavior.

Phase I of data collection involved participants wearing apparel that fit properly and apparel that did not fit properly. 2D images were captured of the front, side, and back, along with 3D body scans for each category of apparel. In phase II of data collection, participants were asked to examine the 2D images and ...


The Role Of Higher Protein Diets In The Regulation Of Mood And Sleep In Patients With Metabolic Syndrome, Mckenzie Fellinger May 2020

The Role Of Higher Protein Diets In The Regulation Of Mood And Sleep In Patients With Metabolic Syndrome, Mckenzie Fellinger

Biological Sciences Undergraduate Honors Theses

Metabolic Syndrome is becoming a more prevalent health issue within the United States, currently affecting 22% of adults (Capuron et al., 2008). Several factors contribute to the diagnosis of Metabolic Syndrome, including obesity, high levels of triglycerides, elevated blood pressure, and low high-density lipoprotein cholesterol. Metabolic Syndrome puts those who have it at an increased risk for numerous diseases, such as type 2 diabetes, cardiovascular disease, and cancer (Jennings et al., 2007). Several studies have shown that Metabolic Syndrome plays a negative role in sleep and mood of those with the disease. Individuals with Metabolic Syndrome often have poor sleep ...


Association Of Micronutrient Inadequacy And Body Mass Index In Young Adults, Taylor Peabody May 2020

Association Of Micronutrient Inadequacy And Body Mass Index In Young Adults, Taylor Peabody

Human Nutrition and Hospitality Management Undergraduate Honors Theses

Background

Micronutrient inadequacy has been found at higher levels in overweight and obese individuals in a broad range of ages relative to healthy weight. Insufficient micronutrient levels can have a negative impact on physical and mental health along with excess weight.

Objective

Due to health consequences related to inadequate micronutrient intake and the understanding that the general population not only fails to meet the majority of micronutrient recommendations, but is also overweight or obese, the objective of this study is to first, determine if young adults in the Northwest Arkansas Region are consuming adequate levels of micronutrients and second, if ...


Use Of Diatomaceous Earth And Copper Oxide Wire Particles To Control Gastrointestinal Nematodes In Lambs, Olivia Jones May 2020

Use Of Diatomaceous Earth And Copper Oxide Wire Particles To Control Gastrointestinal Nematodes In Lambs, Olivia Jones

Animal Science Undergraduate Honors Theses

Abstract

Anthelmintic resistance (AR) urges alternatives to control gastrointestinal nematodes (GIN). Copper oxide wire particles (COWP) are more efficacious when used with other dewormers and little is known on efficacy of diatomaceous earth (DE) to control gastrointestinal parasites. The objective was to examine the effects of DE and COWP on GIN control. Katahdin lambs (n = 32; ~150 d of age; 25.0 ± 1.8 kg) were randomly assigned to receive: 1) DE fed at an estimated 2% dry matter intake (with the assumption of moderate consumption of bermudagrass forage and provided supplement), 2) 1g COWP, 3) both 2% DE and ...


Design Of A Deep Flow Technique Hydroponic System And An Elementary Education Module For Tri Cycle Farms, Cady Rosenbaum May 2020

Design Of A Deep Flow Technique Hydroponic System And An Elementary Education Module For Tri Cycle Farms, Cady Rosenbaum

Biological and Agricultural Engineering Undergraduate Honors Theses

Hydroponics is an agricultural technique in which plants are grown without soil and are instead grown in water systems that include nutrients and other growth-supporting media. Hydroponic systems typically reside inside, so that the system can be fully controlled by the grower by manipulating the temperature and amount of light the plants receive. The benefits of growing plants using hydroponics include: the amount of water used is reduced, it is less labor to grow organic produce with an indoor system, less space used, and it allows for growing food anywhere. Tri Cycle Farms is planning for the construction of a ...


Design Of A Shallow-Aero Ebb And Flow Hydroponics System And Associated Educational Module For Tri Cycle Farms, Julie Halveland May 2020

Design Of A Shallow-Aero Ebb And Flow Hydroponics System And Associated Educational Module For Tri Cycle Farms, Julie Halveland

Biological and Agricultural Engineering Undergraduate Honors Theses

Tri Cycle Farms, whose main mission is to reduce food insecurity in their community, is a non- profit urban farm in Fayetteville, Arkansas. The “Tri” in their name refers to the three parts of their foundation: giving a third of their yield to volunteers, giving a third to local food pantries, and selling a third to sustain the farm and demonstrate the economy of local food production. They want to expand on the third part and have a vision of building a hydroponic greenhouse with the intention that it will create more crops to sell and give, as well as ...


Comparing Economics Of Traditional Carbonation Method And A Novel Carbonation Invention For Craft Beer, Kira Simonson May 2020

Comparing Economics Of Traditional Carbonation Method And A Novel Carbonation Invention For Craft Beer, Kira Simonson

Biological and Agricultural Engineering Undergraduate Honors Theses

The traditional method for the carbonation of beer includes bubbling CO2 through a pressurized brite tank until the desired level of carbonation concentration is reached. The gas either dissolves in the liquid volume or passes through the beer into the gas headspace above the bulk volume of beer. The gas that passes through the liquid can strip the beer of flavors, and this undissolved gas is vented to the atmosphere. To reduce the gas lost to the atmosphere, the CO2 is dissolved into the beer slowly over a long period of time, which increases gas-use efficiency but sacrifices ...


The Efficacy Of Extended-Release Eprinomectin For The Reduction Of Horn Flies, Face Flies, And Fecal Egg Counts Of Parasitic Nematodes In Replacement Beef Heifers, Sophia F. Landers May 2020

The Efficacy Of Extended-Release Eprinomectin For The Reduction Of Horn Flies, Face Flies, And Fecal Egg Counts Of Parasitic Nematodes In Replacement Beef Heifers, Sophia F. Landers

Animal Science Undergraduate Honors Theses

The purpose of this study was to evaluate the efficacy of extended-release eprinomectin against horn flies, face flies, and fecal egg counts of parasitic nematodes in crossbreed replacement beef heifers. Fifty-four heifers were randomly placed into three treatment groups (N=18 heifers/treatment). Group 1 was administered the labeled dosage of extended-release eprinomectin on day 0. Group 2 acted as the negative control. Group 3 received the anthelmintic injection once a quarter of the heifers in the group reached the threshold treatment level for horn flies (N=200 flies/animal; day 41). Nematode infections were measured via fecal egg counts ...


Impact Of Phosphorus Intake On Beef Heifer Growth Performance And Conception Rates, Hailey Hilfiker May 2020

Impact Of Phosphorus Intake On Beef Heifer Growth Performance And Conception Rates, Hailey Hilfiker

Animal Science Undergraduate Honors Theses

This study aims to examine the effects of phosphorus intake on beef heifer growth performance and conception rates. In Northwest Arkansas, there has been an increase in phosphorus concentrations in soil where livestock manures have been repeatedly applied. Consequently, forages grown on soils high in phosphorus tend to contain high amounts of the mineral itself. This has led many to question whether it is necessary to supplement phosphorus in areas where concentrations may be higher. In this study, crossbred Angus heifers (n = 72), approximately 30 days after weaning, were stratified by body weight (average initial weight 251 ± 3.9 kg ...


Pilot Testing A Qualitative Methodology To Evaluate The Perceived Benefits And Stressors Of Sole-Dog Ownership In Full-Time College Students, Emma Williams May 2020

Pilot Testing A Qualitative Methodology To Evaluate The Perceived Benefits And Stressors Of Sole-Dog Ownership In Full-Time College Students, Emma Williams

Animal Science Undergraduate Honors Theses

The number of individuals acquiring pets is continually increasing, with 71.5% of Americans owning a pet in 2012. Companion animals are a huge source of benefits but owning them can also come with several stressors. However, little research has been conducted on the negative aspects of dog ownership. This pilot test evaluates the perceived stressors and benefits of sole dog ownership in full-time college students. The pilot aimed to hold three focus groups from which qualitative thematic data were collected and quantitative were collected from a demographic survey of participants. Participants were asked a series of questions about sole ...


Effect Of Zelnate Administered As A Metaphylactic Upon Initial Processing Of High-Risk, Newly Received Beef Calves On Performance And Morbidity, Brady Martin May 2020

Effect Of Zelnate Administered As A Metaphylactic Upon Initial Processing Of High-Risk, Newly Received Beef Calves On Performance And Morbidity, Brady Martin

Animal Science Undergraduate Honors Theses

Bovine Respiratory Disease (BRD) is the most prominent and costly ailment in the stocker cattle industry today, and its prevalence has not been diminished in the last thirty years. Therefore, the objective of this study was to investigate the effects of Zelnate, a DNA immunostimulant, administered upon arrival to calves (n = 261; BW 253 ± 4.0 kg), on morbidity/mortality, performance and producer costs. Crossbred male beef calves were acquired and transported to the University of Arkansas stocker unit for a 42-d backgrounding period. Calves were allocated into treatment groups: 1) Zelnate, DNA immunostimulant administered or 2) Control, in which ...