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Articles 1 - 30 of 3934
Full-Text Articles in Life Sciences
Providing Proteins To Belizean Residents Through Poultry Products, Ellis Freel
Providing Proteins To Belizean Residents Through Poultry Products, Ellis Freel
Poultry Science Undergraduate Honors Theses
Belize is a food insecure, developing country. Although Belize has plenty of nutritious food in-country, the exportation of that food to generate income contributed to a distribution issue of that nutritious food. More impoverished areas of Belize do not have access to nutritious food because of the lack of affordability and high export rates. Diets with a lack of food, or lack of balanced, nutritious food can negatively impact growth and cognitive development, especially in children. Poultry is one of the only products in Belize not able to be exported. Implementing poultry into Belizean diets would affordably alleviate food insecurity …
Effects Of Maternal Infant-Directed Sensory Cues On Early Weaned Piglet Behavior, Mattie Still
Effects Of Maternal Infant-Directed Sensory Cues On Early Weaned Piglet Behavior, Mattie Still
Animal Science Undergraduate Honors Theses
In the commercial pig production industry, weaning is a stressful time. Stress is related to loss in production due to increased incidence of illness, increased aggression, and reduced rate of gain, which results in economic losses for the producer. The purpose of this continuous behavior study was to explore the effects of provisional own-mother olfactory and auditory stimuli on early weaned piglet behavior and growth. During days 7-14 postpartum, the grunting of 12 individual sows was recorded while their piglets nursed. The audio files were put into a single loop with grunting occurring for 20 minutes followed by 60 minutes …
Decoding Generation Z: A Perceptions Content Analysis, Olivia Larson
Decoding Generation Z: A Perceptions Content Analysis, Olivia Larson
Agricultural Education, Communications and Technology Undergraduate Honors Theses
This thesis explores the multifaceted nature of Generation Z through a content analysis, aiming to identify the range of characteristics and preferences within this cohort. By delving beyond prevalent stereotypes, this study addresses the gap in understanding regarding Generation Z's learning styles, communication preferences, work ethics, and personal values. Through examination, this research provides insights crucial for marketers and educators seeking to engage and educate Generation Z effectively.
Moisture Sorption And Quality Characteristics Of Instant Rice, Anna Mays, Griffiths Atungulu
Moisture Sorption And Quality Characteristics Of Instant Rice, Anna Mays, Griffiths Atungulu
Food Science Undergraduate Honors Theses
Market demand for instant rice--a processed form of rice that is cooked and dehydrated before it is sold--has risen tremendously and become a significant component of the rice industry. Compared to freshly cooked rice, the quality of instant rice (in terms of texture, color, aroma, etc.) is much lower. There exists little information regarding how instant rice’s storage conditions affect its quality. Such information may be elucidated by studying sorption isotherms which describe the storage temperature, relative humidity, and instant rice moisture relationships.
The purpose of this study was to generate moisture sorption isotherms of instant rice for temperatures and …
Evaluating The Effect Of Garden-Based Education On Young Learners’ Preferences For And Willingness To Try Healthy Food, Sierra Gregory
Evaluating The Effect Of Garden-Based Education On Young Learners’ Preferences For And Willingness To Try Healthy Food, Sierra Gregory
Agricultural Economics and Agribusiness Undergraduate Honors Theses
Childhood obesity in American children has tripled in the last 20 years, and 85% of current healthcare spending is linked to diet-related diseases. The consumption of highly processed foods is linked to these trends and makes up more than half of an average American youths’ diet. Reducing the consumption of highly processed foods in children’s diets can be addressed, in part, by addressing childhood neophobia (willingness to try new foods) associated with whole foods like fruits and vegetables. Influence over behavioral areas such as nutrition and in early childhood is essential to long-term sustained health, and garden-based interventions shows promise …
Near-Surface Soil Property Change Over Time In Two Native Tallgrass Prairies In The Arkansas River Valley, Katie Jansson
Near-Surface Soil Property Change Over Time In Two Native Tallgrass Prairies In The Arkansas River Valley, Katie Jansson
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
One climate-change mitigation pathway is soil carbon (C) sequestration, which removes carbon dioxide from the atmosphere and stores C in various forms in the soil. Native prairie soils have long been known for their soil C sequestration abilities, but the full extent of their sequestration capacity is not completely understood. This study evaluated the effect of soil depth and soil map unit/prairie combination on changes in various soil properties over time from 2018 to 2022 in the top 20 cm of two native tallgrass prairie soils in the Arkansas River Valley in west-central Arkansas. Soil samples were collected from the …
Thematic Mapping Of Apidae Holdings Within The University Of Arkansas Arthropod Museum, Baylie Lenora Day
Thematic Mapping Of Apidae Holdings Within The University Of Arkansas Arthropod Museum, Baylie Lenora Day
Crop, Soil and Environmental Sciences Undergraduate Honors Theses
Museum biological collections store species data that can be utilized in research on biodiversity, environmental change, invasive species, public health, and disease. The University of Arkansas Arthropod Museum, which began in 1905, houses over 750,000 specimens and has not yet been digitized. Making data publicly accessible via the internet makes the data available to the entire scientific community. The goal of this project was to create a digital resource to allow greater access to the University of Arkansas Arthropod Museum holdings. To do so, data from Bombus (bumble bee) and Xylocopa (carpenter bee) specimens were databased in Excel and displayed …
Towards Understanding The Function Of An Ets-Like Gene In Nematostella Vectensis: Generation Of A Knockout Mutant Line And A Transgenic Reporter Line, Emily Bullock
Biological Sciences Undergraduate Honors Theses
Due to their unique phylogenic position as sister to Bilateria, Cnidaria are often credited with the utility of allowing for reconstruction of ancestral biology based on characteristics shared with bilaterians and other animals. This factor makes investigation into the nervous systems of cnidarians critical in understanding early neural evolution. Wamides, a class of neuropeptides, have been shown to play a regulatory role in life cycle transitions across many different species. The cnidarian specific Wamide neuropeptide, GLWamide, has previously been identified to play an accelerator role in the metamorphic timing of a specific species of sea anemone, Nematostella vectensis. However, …
Effect Of Progesterone On Cognition Among College Aged Women, Katelyn Helberg
Effect Of Progesterone On Cognition Among College Aged Women, Katelyn Helberg
Biological Sciences Undergraduate Honors Theses
Women who have a reoccurring menstrual cycle and do not take hormonal birth control naturally experience changes in the amount of sex hormones that their body produces. These sex hormones help promote sexual development, fertility, and mood regulation, but can be hard to study due to their conflicting effects on each other. One such hormone, progesterone, is produced in different concentrations throughout the menstrual cycle to prepare the uterus for a potential pregnancy. However, it also may have secondhand effects on how well women can complete everyday tasks involving memory, attention, processing speed, and more which is what we measured …
Cyanoacrylate Deposition Onto Sebum With Pretreatment Of Amine, Isaac Baltz
Cyanoacrylate Deposition Onto Sebum With Pretreatment Of Amine, Isaac Baltz
Chemistry & Biochemistry Undergraduate Honors Theses
Super glue, or ethyl cyanoacrylate, fuming is commonly used in forensic science to develop latent fingerprints on nonporous surfaces[7]. Fingerprints are primarily made up of the oily substance secreted by sebaceous glands better known as sebum. Previously it has been shown that exposure of fingerprints to diisopropylamine dramatically increases the deposition of cyanoacrylate polymers on the fingerprints[1]. However, the heterogeneity of any series of real fingerprints made it difficult to quantitatively assess this effect. This heterogeneity includes not just the amount of sebum but the presence of unknown amounts of proteins, amino acids, and other potential nucleophiles which catalyze the …
Model-Based Comparison Of Biological Organism And Electro-Mechanical System Resiliency Strategies, Nicholas Ratycz
Model-Based Comparison Of Biological Organism And Electro-Mechanical System Resiliency Strategies, Nicholas Ratycz
Mechanical Engineering Undergraduate Honors Theses
Bio-inspired design has been used by many engineers to solve difficult problems or to make manufacturing processes more efficient. Biomimetics is the study of implementing the structure or function of biological substances, materials, mechanisms, and processes onto artificial ones that mimic the original. The goal of the BIASD tool is to provide bio-inspiration for engineers by studying the fault-adaptive strategies that biological systems use, rather than just their structure or function. In this thesis, the fault adaptive strategies of both a biological example and that of a real cubesat are compared using three types of model-based system diagrams to show …
The Effect Of Hormonal Contraceptive Use On Dominance And Prestige Tactics, Carson Chappell
The Effect Of Hormonal Contraceptive Use On Dominance And Prestige Tactics, Carson Chappell
Biological Sciences Undergraduate Honors Theses
This study was designed to investigate the relationship between hormonal contraceptives and prestige and dominance status-seeking tactics. Existing literature has examined how the hormones estrogen and progesterone, especially in relation to the fertile window of the menstrual cycle, are associated with prestige and dominance but has yet to look in depth at how hormonal contraceptives might alter this impact. The current study asked participants to complete a 22- item questionnaire assessing dominance and prestige. I hypothesized that women on hormonal contraceptives would have lower scores for prestige and dominance compared to women who are naturally cycling. The results did not …
Utilizing Biomimicry To Design Sustainable Architecture, Virginia Hammond
Utilizing Biomimicry To Design Sustainable Architecture, Virginia Hammond
Architecture Undergraduate Honors Theses
Nature has an integral relationship with architecture and serves as a sustainable role model and inspiration for designers. The process of biomimicry in architecture has the potential to produce more sustainable design solutions and foster a connection between humans and nature. Existing biomimetic design projects have varying strengths and weaknesses as examples of the process. Utilizing guidelines and references from key leaders in biomimetic design consultancy (Biomimicry 3.8), selected case studies are assessed for their ability to demonstrate the benefits of this design strategy. Using these evaluations, the case studies are diagrammed and critiqued to determine how new projects could …
Gaseous Ozone To Improve The Microbial Safety Of Spices, Seeds, And Nuts, Arshpreet Kaur Khattra
Gaseous Ozone To Improve The Microbial Safety Of Spices, Seeds, And Nuts, Arshpreet Kaur Khattra
Graduate Theses and Dissertations
Due to the increasing number of reported outbreaks of pathogens in low-moisture foods (LMFs), there is a need to investigate novel non-thermal gaseous technologies to increase the microbiological safety of spices, nuts, and seeds without compromising the product quality. The objective of this study was to inactivate Salmonella spp. in different spices, seeds, and nuts using gaseous ozone treatment and evaluate the suitability of Enterococcus faecium as a potential surrogate for Salmonella. Each food product (dried basil leaves, black peppercorn, chia seeds, and walnuts) was separately inoculated with a 5-strain Salmonella and E. faecium cocktail and equilibrated to water activity …
Do Heat Waves Drive Natural Selection In Damselflies?, Adam Baranyk
Do Heat Waves Drive Natural Selection In Damselflies?, Adam Baranyk
Biological Sciences Undergraduate Honors Theses
Climate change has led to changes in both mean temperatures and temperature extremes over the recent years. These changes have had differential effects on animals throughout the world. Ectotherms depend on their external environment for thermal regulation, making them especially susceptible to temperature extremes. It is not yet clear whether there is a relationship between physical traits in ectotherms, and survivorship throughout a heat wave. That is, whether or not temperature extremes driven survival selection. In this study, a heat wave was simulated artificially using thermally regulated mesocosms at different temperatures (18°C, 22° C, 26° C, 30° C) with a …
Investigating Autonomous Ground Vehicles For Weed Elimination, Abraham Mitchell
Investigating Autonomous Ground Vehicles For Weed Elimination, Abraham Mitchell
Computer Science and Computer Engineering Undergraduate Honors Theses
The management of weeds in crop fields is a continuous agricultural problem. The use of herbicides is the most common solution, but herbicidal resistance decreases effectiveness, and the use of herbicides has been found to have severe adverse effects on human health and the environment. The use of autonomous drone systems for weed elimination is an emerging solution, but challenges in GPS-based localization and navigation can impact the effectiveness of these systems. The goal of this thesis is to evaluate techniques for minimizing localization errors of drones as they attempt to eliminate weeds. A simulation environment was created to model …
A Meta-Analysis For Laboratory Diagnostics For Coccidioidomycosis, Mary C. Cowen
A Meta-Analysis For Laboratory Diagnostics For Coccidioidomycosis, Mary C. Cowen
Biological Sciences Undergraduate Honors Theses
Coccidioidomycosis, commonly referred to as Valley Fever, is a fungal infection found in arid regions of the southwestern United States and Mexico. Infection occurs through inhalation of airborne spores from Coccidioides species, Coccidioides immitis and/or Coccidioides posadasii, and proceeds in both pulmonary and disseminated fashions. Approximately 60% of patients with coccidioidomycosis remain asymptomatic, while 40% will experience symptoms. Within the literature, there are no papers that summarize sensitivity and specificity values between different tests; therefore, this paper presents sensitivity and specificity results across different tests and companies (Meridian, IMMY, and MiraVista).
Mate Guarding Against Strong Men Displaying Affiliative And Aggressive Humor, Jacob Pauley
Mate Guarding Against Strong Men Displaying Affiliative And Aggressive Humor, Jacob Pauley
Biological Sciences Undergraduate Honors Theses
Mate retention behaviors serve to discourage partner defection from a current pairbond. Such behaviors are oftentimes more prevalent toward intrasexual rivals exhibiting physical and behavioral cues implicating that rival as an optimal mate. Among these features in men are their upper body strength, a feature diagnostic of heritable fitness, and men's ability to produce humor, a cue to their social competence. This study considered the intersection of these desirable features in shaping men's mate retention behavior toward an intrasexual rival. After learning of a hypothetical interloper exhibiting high or low upper body strength while similarly using humor in an affiliative …
Establishing An Objective, Quantifiable Method For Detecting Erosive Tooth Wear, Camille Kita
Establishing An Objective, Quantifiable Method For Detecting Erosive Tooth Wear, Camille Kita
Biological Sciences Undergraduate Honors Theses
This study aims to monitor and evaluate erosive tooth wear (ETW) by measurement of enamel surface thickness and texture in a clinical setting. The objective approach is fundamentally different from the standard subjective visual assessment that professionals in the dental field using the Basic Erosive Wear Evaluation (BEWE) method.
Twenty-nine hyposalivation and three control subjects were used in this longitudinal study, for a total of 597 samples (only 577 teeth were eligible for surface texture analysis) evaluated in a longitudinal study including both baseline and 12 month follow up surfaces. Each participant’s buccal surface of the tooth was first analyzed …
Exploring Genomic Convergence For Adaptations To Freezing Environments In Polar Fish, Ethan Talley
Exploring Genomic Convergence For Adaptations To Freezing Environments In Polar Fish, Ethan Talley
Biological Sciences Undergraduate Honors Theses
Convergent evolution provides valuable insights into how natural selection shapes species traits. Genomic analysis of lineages that display convergent traits has the potential to identify candidate genes for environmental adaptations across the scope of entire genomes. One remarkable example of convergent evolution is the independent development of antifreeze proteins (AFPs) in phylogenetically distant polar fish lineages. While AFPs themselves are relatively well studied, the full genomic context of adaptation to freezing conditions in these fish lineages remains largely unexplored. Leveraging the whole genome sequences previously assembled in our lab, along with other high-quality genomes available in GenBank, I examined the …
Arkansas Soybean Performance Tests 2023, J. F. Carlin, R. D. Bond, R. B. Mulloy, J. C. Mccoy
Arkansas Soybean Performance Tests 2023, J. F. Carlin, R. D. Bond, R. B. Mulloy, J. C. Mccoy
Arkansas Agricultural Experiment Station Research Series
Soybean variety and strain performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Crop Variety Improvement Program. The tests provide information to companies developing varieties and/ or marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for soybean producers.
Growing Agriculture Literacy’S Presence In America’S Classrooms, Emily Stone
Growing Agriculture Literacy’S Presence In America’S Classrooms, Emily Stone
Journal of Food Law & Policy
“Americans, as a whole, were at least two generations removed from the farm and did not understand even the most rudimentary of processes, challenges, and risks that farmers and the agricultural industry worked with and met head-on every day.” This quote perfectly describes the mindset of agriculture stakeholders in 1981 as they began to realize the drastic steps our education system had taken away from using principles of agriculture in K-12 education. As they saw it, Americans were moving out of rural America, away from farms, and becoming less connected to the food they daily consumed. Simultaneously, the education system …
The Contradictory Nature Of U.S. Laws And Nutrition Programs And Their Effects On Infant Feeding, Lily Patel
The Contradictory Nature Of U.S. Laws And Nutrition Programs And Their Effects On Infant Feeding, Lily Patel
Journal of Food Law & Policy
The contradictory nature of U.S. laws, including the laws concerning infant feeding, though supposedly aligned with policies to promote wellness in Americans, can exacerbate gender and race inequality and work against the National Strategy. The overarching goal of U.S. laws concerning infant feeding is to ensure that infants are fed, nourished, and receive proper nutrition. However, the laws often appear to be directly contradictory to one another in the priorities they are promoting.
Origin, Rise And Development Of American Upland Cotton And Their Status At Present. Second Edition, Ed. By F.M. Bourland, J. O. Ware
Research Reports and Research Bulletins
American Upland cotton (Gossypium hirsutum) is a Dixie product. Although the stocks of the species were brought from elsewhere, new types (through series of adaptational changes) formed this distinctive group—the final characteristics of which are a product of the Cotton Belt of the United States. These biological processes were considerably aided by man and the steps of development possibly were about as follows: (a) natural selection took place in the earlier introductions, (b) seed were saved from the more choice stocks, (c) series of subsequent introductions were obtained from the better sources, (d) these were acclimatized and the superior ones …
Corn And Grain Sorghum Performance Tests 2023, J. F. Carlin, R. B. Mulloy, R. D. Bond, J. C. Mccoy
Corn And Grain Sorghum Performance Tests 2023, J. F. Carlin, R. B. Mulloy, R. D. Bond, J. C. Mccoy
Arkansas Agricultural Experiment Station Research Series
Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture. The tests provide information to companies marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers.
The 2023 corn performance tests contained 46 hybrids and were conducted at the Northeast Rice Research and Extension Center (NERREC) at Harrisburg, the Northeast Rice Research and Extension Center (NEREC) at Keiser, the Lon Mann Cotton Research Station (LMCRS) near Marianna, the Rohwer Research Station (RRS) near Rohwer, and the Rice Research and Extension Center (RREC) …
Developing Recommendations For Broad Mite, Polyphagotarsonemus Latus Banks, In Blackberry, Rubus Subgenus Rubus, Jared Bradley Linn
Developing Recommendations For Broad Mite, Polyphagotarsonemus Latus Banks, In Blackberry, Rubus Subgenus Rubus, Jared Bradley Linn
Graduate Theses and Dissertations
Broad mite, (Polyphagotarsonemus latus Banks) (Acari: Tarsonemidae), is an economically important pest of blackberry production across the world. Since it was first reported on primocane-fruiting blackberries in 2010, little work has gone into developing IPM tools and understanding impact on floricane-fruiting cultivars. The objective of this thesis was to evaluate the effect of broad mite feeding on floricane-fruiting cultivars of blackberry, develop an efficient and accurate field scouting strategy, and investigate the impact of cultivar and trellising technique on the development of broad mite populations. Experiments consisted of evaluating floricane fruiting cultivars by quantifying broad mite populations and cataloging their …
Cellular Control Of Proteostasis, Cytoskeleton Organization, And Polarity Remodeling During Infection-Related Development By The Rice Blast Fungus, Audra Rogers
Graduate Theses and Dissertations
Understanding the intricate processes underlying fungal infection-related development is crucial for combating plant pathogens. In this study, we investigate the coordination of morphogenetic transitions during plant infection by Magnaporthe oryzae, the blast fungus. We focus on three key aspects: protein quality control, cytoplasmic microtubule organization, and cell-end marker proteins. M. oryzae forms a specialized infection cell known as an appressorium. The proper formation of this cell is crucial for the pathogen to infect a susceptible host. First, we investigate protein quality control mechanisms during infection-related development. Our findings demonstrate that aggregated proteins are sequestered into quality control compartments within conidia …
Characteristics Of Award-Winning Children’S Books About Agriculture: An Analysis Of Content, And The Perspectives Of Authors, Illustrators, And Publishers, Addison L. Beckham
Characteristics Of Award-Winning Children’S Books About Agriculture: An Analysis Of Content, And The Perspectives Of Authors, Illustrators, And Publishers, Addison L. Beckham
Graduate Theses and Dissertations
The purpose of this two-article qualitative study was to characterize children's literature about agriculture and to describe the perceptions of authors and illustrators who are responsible for writing and designing these successful publications. This will result in the ability of organizations like Feeding Minds Press to provide writers, illustrators, and publishers with effective strategies and techniques to improve the accuracy and overall quality of children’s literature about agriculture. Few parameters exist for authors of children’s books about agriculture (Biser, 2007). These parameters are necessary to ensure the quality and accuracy of these educational efforts (Serafini, 2012). Though Feeding Minds Press …
Evaluation Of Water Hardness And Ph On Soybean And Cotton Insecticide Efficacy, Taylor Davis
Evaluation Of Water Hardness And Ph On Soybean And Cotton Insecticide Efficacy, Taylor Davis
Graduate Theses and Dissertations
Insecticide efficacy often varies by location and year. Many factors can influence an insecticide’s efficacy, but an often-overlooked factor is the quality of water in a carrier solution. Water quality includes many parameters, but two important ones are water hardness and pH. Research has shown that water hardness and pH can affect some pesticides. Multiple experiments were conducted to evaluate the impact of water hardness and pH on insecticide efficacy. Experiments were conducted to evaluate the impact of water hardness and pH on the efficacy and residual control of chlorantraniliprole for the control of corn earworm, Helicoverpa zea (Boddie). Leaf …
Demographics, Sexual Dimorphism, And Ecological Aspects Of Ambystoma Annulatum (Ringed Salamander) In Northwest Arkansas, Usa, Brian M. Becker
Demographics, Sexual Dimorphism, And Ecological Aspects Of Ambystoma Annulatum (Ringed Salamander) In Northwest Arkansas, Usa, Brian M. Becker
Graduate Theses and Dissertations
The need to study and monitor amphibian populations is increasing along with the threats to their population stability and persistence in nature. Northwest Arkansas is one of the fastest growing areas in the nation and with that growth comes rapid changes in land use, massive alterations to habitats, habitat loss, and the introduction of nonnative plants and animals. Ambystoma annulatum (Ringed Salamander) is an Ambystomatid endemic to the Ozark and Ouachita Mountains of southern Missouri, northern and western Arkansas, and eastern Oklahoma giving it a relatively small distribution compared to most Ambystoma. Therefore, Arkansas constitutes a significant portion of the …