Digital Commons Network^™

Harvester Ant (Pogonomyrmex Sp.) Seed Preferences And Distribution In A Suburban Setting, Lilly V. Elliott

Theses and Dissertations

Harvester ants (Pogonomyrmex sp.) are omnivorous ants native to Texas and are the main food source for the threatened Texas Horned Lizard (Phrynosoma cornutum). Little research has been conducted on harvester ants in the Lower Rio Grande Valley (LRGV) and their interactions with their environment. For this purpose, a variety of experiments were conducted to better understand these interactions and preferences. In CHAPTER I, suburban harvester ants were exposed commonly used cover crop seeds in the LRGV and inoculated seeds via seed depots over the course of 24 hours. We found that harvester ants do …

Effects Of Tributyltin Exposure On 8-Ohdg And Dsdna Expressions, Oxidative And Nitrative Stress In The American Oyster, Crassostrea Virginica, Mohan Kumar Dash

Theses and Dissertations

Environmental pollution increases due to anthropogenic activities. Different types of pollutants and/or chemicals impair growth, reproduction and development in aquatic organisms. Tributyltin (TBT, an organotin compound) is a tremendously toxic substance which widely uses as antifouling paints used in boats, hulls, and ships. The toxic effect of TBT is well documented in teleost species. The American oyster (Crassostrea virginica) is an ideal shellfish species to study on TBT exposure DNA lesion and oxidative/nitrative stress. In this study, the effects of TBT on 8’-hyrodxy-2’-deoxyguanosine (8-OHdG, a molecular marker), dsDNA, dinitrophenyl protein …

Postprandial Hemodynamics In Hispanics With And Without A Family History Of Type 2 Diabetes, Gabriel Alejandro Figueroa

Theses and Dissertations

Hispanics of the Rio Grande Valley (RGV) have the highest rates of obesity and type 2 diabetes (T2D) in the country, conditions often associated with cardiovascular disease and increased mortality. This study investigated the physiological factors affecting postprandial hemodynamic responses differently between FH+ and FH- groups. Thirty-one healthy Hispanic individuals volunteered in this study. Overall, FH+ individuals had higher pressures at rest compared to FH-, However, these differences were not statistically significant. When controlling for blood chemistries such as blood glucose, cholesterol, lipoproteins, and triglycerides, family history appears to have no effect on fasted or postprandial hemodynamics and pulse wave …

Nanostructured Materials For Biomedical Applications, Silverio Lopez

Theses and Dissertations

Nanotechnology has been used in an increasing number of applications in biochemistry and molecular biology. Compared to bulk materials, nanoscale materials offer a variety of advantages in applications due to an increased surface-to-volume ratio of the reactants. The unique properties of nanostructured materials and their properties such as stability, reactivity, magnetic response, pressure discharge performance and biocompatibility depend on particle size and shape. This work focuses on a nanoenergetic material composed of Aluminum (Al), Copper II oxide (CuO), and Iodine (I) pentoxide (I2O5), and the biomedical application of nanoscale dextran-coated magnetite (Fe3O4), which was produced using microfluidics to tune particle …

Assessing The Effects Of Levonorgestrel (Lng) On Neural Differentiation In The Developing Hypothalamus Using The Zebrafish (Danio Rerio) As A Model, Gabriella Hinojosa

Theses and Dissertations

Neurogenesis is a critical component of fetal neurodevelopment consisting of: migration, proliferation and differentiation. Health concerns from anxiety to reproductive issues have been linked to alterations of neurogenesis processes. Endocrine disrupting chemicals (EDCs) can mimic hormones vital to this process, potentially adversely affecting the susceptible fetal brain. One EDC, Levonorgestrel (LNG), is a testosterone-like progestin used in birth control methods that has a high bioavailability and long half-life. Using zebrafish embryos as a model, this lab previously discovered that an environmentally relevant LNG dose (5 ng/L) significantly increased anxiety behaviors. The hypothalamus is responsible for the development …

Comparing Various Physiological System Adaptations Following 8 Weeks Of Resistance Training With Or Without Bfr In Older Males, Ricardo Parra

Theses and Dissertations

PURPOSE: The purpose of this study was to compare the effects of 8 weeks of resistance exercise training with and without BFR on: 1), arterial elasticity and hemodynamics (e.g., blood pressure and resting heart rate), 2) muscular force production (e.g., maximal voluntary contraction, force production, electromyography, and estimated one-repetition maximum) in males between the 50 to 70 years of age.

RESULTS: Significant condition difference for reflection magnitude occurred in BFR group (p < 0.05). Significant time*condition effect occurred in Leg Press 1RM, Leg Extension 1RM, Leg Curl 1RM, Chest Press 1RM, and Shoulder Press 1RM (p < 0.05). Significant condition* time interaction occurred for Isokinetic Leg Extension Test (60°/s) (p < 0.05). A significant time*condition interaction occurred during Maximal Voluntary Contraction (MVC) – Root Mean Square for both vastus medialis and vastus lateralis (p < 0.05). A significant time main effect occurred in the BFR group for the amplitude mean of the MVC in the vastus medialis and vastus lateralis (p < 0.05). A significant time main effect occurred for median frequency of the MVC (p < 0.05). A significant difference in Estimated Visceral Adipose Tissue occurred in the BFR group (p < 0.05). A significant condition*time interaction occurred in arm fat percentage (p < 0.05). The BFR group had significantly less fat tissue (%) in the left arm (p < 0.01) and in the right arm (p = 0.04). A significant time*main effect occurred in the total lean tissue for the left side of the body (p = 0.04).

CONCLUSION: Using BFR resistance training at a low intensity can achieve similar adaptations seen at high intensities while reducing the risk of injury that comes with heavier loads.

Intervention Program To Increase Preparedness For Life After High School, Melisa Garcia

Capstone Projects and Master's Theses

In Monterey County, too many skilled-labor positions are not filled by local youth, negatively impacting long-term well-being, stability, and success. This capstone project was implemented at Learning for Life Charter School (LFLCS), an alternative middle and high school for at-risk youth. There is a lack of preparedness among LFLCS seniors for postsecondary life. This is an intervention program aimed to increase preparedness among graduating seniors. Participants are expected to identify a post-graduation plan; the intermediate and long-term expectations are that more LFLCS graduates will pursue their identified plan, increasing individual and community well-being, stability, and success. Of 50 LFLCS seniors, …

Cultivating A Safe Environment For Students In Middle Childhood To Learn About Healthy Lifestyles, Rocio Carranza Pineda

Capstone Projects and Master's Theses

This paper attempts to educate children in middle childhood about three different elements of healthy lifestyles: nutrition, physical activity, and rest. This project also serves to nurture children's curiosity and accountability for their own physical well-being as well as how it can impact their cognitive and/or emotional development. This paper uses the Bronfenbrenner's ecological system theory to support their claims.

A Controversial New Hope: Exploring Recent Advancements In Alzheimer’S Disease Treatment, Lauren Limbach

Scientific Kenyon: The Neuroscience Edition

No abstract provided.

The Role Of Aryl Hydrocarbon Receptor Activation On Immunoglobulin A-Secreting B Cell Gut Homing, Linda Ortiz

Master's Theses

Within the United States, foodborne diseases are estimated to result in more than 100,000 hospitalizations each year with 3,000 fatalities. Acute gastroenteritis impacts more than 1.5 million children each year in the United States. Worldwide, childhood morbidity and mortality are largely attributed to infectious diarrheal diseases. To combat infection at mucosal surfaces, immunoglobulin (Ig) A is produced by antibody-secreting B cells to inhibit and neutralize pathogens and their toxins. B cells are influenced by various extrinsic signals through activation of the aryl hydrocarbon receptor (AhR). The AhR is a ligand-activated transcription factor that links diet and environmental factors to intestinal …

Caregiver And Social Worker Perceptions Of The Impacts Of Covid-19 On Child Welfare Visitation, Christopher Enhelder, Christina Ortiz

Electronic Theses, Projects, and Dissertations

The COVID-19 pandemic took the world by surprise and adversely impacted service delivery in both the public and the private sector. This qualitative study asked two significant questions: 1) What are child welfare caregivers’ perceptions of the impact of COVID--19 on child welfare visitation across the United States? How did child welfare caregivers’ cope with child welfare visitation during the COVID-19 pandemic across the United States? A sample of five child welfare professionals who conducted visitations during the pandemic were interviewed (N = 5). Thematic analysis yielded the following five major themes: 1) COVID-19 took the visitation sector by surprise; …

Covid-19 Pandemic, Social Class, And Online Instruction Survivability: A Qualitative Study Of Low-Income Families With Children In The K-12 Education System, Antonio Leanos

Electronic Theses, Projects, and Dissertations

This qualitative study highlights the problems that distance learning has had towards low- income families who had children in K-12 system enrolled in distance learning during Covid-19. Major themes that were presented were separation of being a teacher/parent, technical issues, social interactions, communication, and patience. Parents expressed their survivability with their children enrolled in distance learning during Covid-19 and shared their positive and negative experiences with the schools their children attended. The K-12 Education System in the United States uses a one-size-fits-all instructional approach that does not distinguish between low- income students and their middle-to-high income counterparts. Based on the …

Inter-Agency Collaborations Among Mental Health And Law Enforcement Professionals In San Bernardino County During Covid-19: A Qualitative Study, Sonya Mcisaac

Electronic Theses, Projects, and Dissertations

As first responders, law enforcement officers and mental health professionals are constantly sought after regarding the delivery of critical services to people in need. However, the COVID-19 pandemic brought almost everything to a halt. It is therefore important to understand how social services were delivered during the crisis. It has been assumed in the literature that interprofessional collaboration is an important service delivery framework. However, because COVID-19 is a relatively recent public health phenomenon, relevant studies on interprofessional collaboration between law enforcement officers and mental health professionals are scant, if not non-existent. This qualitative study addresses this gap by exploring …

Dental Students' Perceptions Of Dental Hygienists' Education And Scope Of Practice, Cynthia Metzger

Electronic Theses and Dissertations

Oral health is strongly correlated to systemic health in the United States. Dental professionals play a significant role in addressing the oral health and prevention of disease for populations in the United States. Because many areas in the United States lack access to dental care, the federal government considers dental hygienists part of the solution. It is now paying attention to restrictive dental hygiene scope of practice rules in each state. State dental boards, comprised mainly of dentists, make these rules based on their perception of dental hygienists' lack of education. This study explored fourth-year dental students' perceptions of the …

Cyberspace Vs Green Space: Nature’S Psychological Influence In Neuromancer, Blade Runner 2049, And The Stone Gods, Zackery Castle

Electronic Theses and Dissertations

Cyberpunk science fiction is often set in dystopian futures where capitalism and rapid technological growth have rendered the planet ecologically devastated. The people of these worlds are host to numerous mental illnesses that many attempt to cure with drugs, entertainment, or other aspects of their fast-paced existences, but these solutions are rarely successful. When characters come to embrace the remnants of the natural world, however, they typically show signs of mental healing as the result of exposure to nature. This thesis analyzes William Gibson’s Neuromancer, Denis Villeneuve’s Blade Runner 2049, and Jeanette Winterson’s The Stone Gods alongside research …

Assessing Best Practices, Perceptions, And Barriers To Breastfeeding In The Appalachian Region, Melissa White

Electronic Theses and Dissertations

Background: Breastfeeding protects against a variety of adverse health outcomes for mothers and babies. Global best practices, known as the Baby-Friendly Hospital Initiative (BFHI), have been developed to support the initiation and exclusivity of breastfeeding during the post-delivery hospital stay. The aims of this study were to explore the literature related to the impact of the BFHI on breastfeeding disparities in the U.S.; compare the impact of exposure to these best practices on exclusive breastfeeding rates in Appalachian and non-Appalachian hospitals; and to understand knowledge, perceptions, and barriers to breastfeeding of postpartum mothers receiving care in a Northeast Tennessee OB/GYN …

Knockdown Of C. Elegans Nad Kinases Nadk-1 Or Nadk-2 Induces An Antioxidant Response Without Affecting Lifespan, Henry Gong

Electronic Theses and Dissertations

Nearly all multicellular organisms show changes in redox balance with aging leading to oxidative damage of macromolecules. This study investigated the role of the [NADP⁺]/[NADPH] redox couple in aging. This redox couple plays an important role in maintaining tissue redox balance and becomes slightly more oxidized in aged tissues. NADPH is a major source of reducing equivalents for enzymes that detoxify hydrogen peroxide. However, catalase detoxifies hydrogen peroxide independently of NADPH. But catalase is absent from mitochondria, a major source of hydrogen peroxide, where instead glutathione plays the major role in hydrogen peroxide detoxification in an NADPH-dependent manner. …

Risk-Prone And Risk-Averse Foraging Strategies Enable Niche Partitioning By Two Diurnal Orb-Weaving Spider Species, Mitchell D. Long

Electronic Theses and Dissertations

Niche partitioning is a major component in understanding community ecology and how ecologically similar species coexist. Temporal and spatial partitioning and differences in foraging strategy, including sensitivity to risk (variance), likely contribute to partitioning as well. Here, we approach this partitioning with fine resolution to investigate differences in overall strategy between two species of diurnal, orb-weaving spiders, Verrucosa arenata and Micrathena gracilis (Araneae: Araneidae), that share similar spatial positioning, temporal foraging window, and prey. Through field observation, we found that V. arenata individuals appear to increase spatial and temporal sampling to compensate for an overall risk-prone strategy that depends on …

Self-Measured Blood Pressure Monitoring In Hypertension Control: The Role Of Social Determinants Of Health, Current State In The United States, And Future Directions, Adekunle Oke

Electronic Theses and Dissertations

Hypertension, a medical condition, predisposes to other cardiovascular diseases, and can be impacted by the social determinants of health (SDOH). Self-measured blood pressure monitoring (SMBP) is an evidence-based approach to hypertension control, but not much is known about the influence of SDOH on SMBP. This dissertation aims to: 1) highlight the SDOH factors whose relationship with SMBP have been explored in research studies; 2) examine the relationship between SDOH and SMBP among United States (U.S.) adults with high blood pressure; and 3) examine the current state of SMBP in the U.S., highlight policy implications from the empirical study and provide …

Design And Development Of A Public Health Information Service Model For Rural Inhabitants Of Balasore District Of Odisha, Chittaranjan Nayak Research Scholar (Ph.D), Dr. Arun Kumar Chakraborty Librarian

Library Philosophy and Practice (e-journal)

This research paper focuses on the Public Health Information Service model for the rural inhabitants of the Balasore district, which is one of the objectives of the study. This integrated strategic model is conceptualized and is based on the suitability of health information exchange to rural people. It considers the various parameters of the public and the medical libraries; and the health information stakeholders.

The model recommends the direct involvement of libraries in providing in-house and outhouse health information services to the public in a collaborative manner. This research paper presents an Integrated Public Health Services (IPHIS) model for rural …

Small Extracellular Vesicles In Milk Cross The Blood-Brain Barrier In Murine Cerebral Cortex Endothelial Cells And Promote Dendritic Complexity In The Hippocampus And Brain Function In C57bl/6j Mice, Fang Zhou, Pearl Ebea, Ezra Mutai, Haichuan Wang, Sonal Sukreet, Shya Navazesh, Haluk Dogan, Wenhao Li, Juan Cui, Peng Ji, Denise M.O. Ramirez, Janos Zempleni

Department of Nutrition and Health Sciences: Faculty Publications

Human milk contains large amounts of small extracellular vesicles (sEVs) and their microRNA cargos, whereas infant formulas contain only trace amounts of sEVs and microRNAs. We assessed the transport of sEVs across the blood-brain barrier (BBB) and sEV accumulation in distinct regions of the brain in brain endothelial cells and suckling mice. We further assessed sEV-dependent gene expression profiles and effects on the dendritic complexity of hippocampal granule cells and phenotypes of EV depletion in neonate, juvenile and adult mice. The transfer of sEVs across the BBB was assessed by using fluorophore-labeled bovine sEVs in brain endothelial bEnd.3 monolayers and …

"Proud Parenting" In The Junior Lifeguard Program, Danielle Belcher

Undergraduate Honors Theses

Parental involvement has been shown to be the single most important factor in determining a child’s successful participation in youth sport. Parents may be required to provide financial, emotional, and physical support. However, this involvement from parents can require significant sacrifice. Youth sports can provide children with many developmental benefits such as increases in physical, cognitive, and emotional well-being. A reason that parents may enroll their children into youth sport programs are the beliefs they maintain about the positive developmental benefits that children may obtain from participation in youth sports programs. The capacity to give this opportunity to their child(ren) …

Pregnant In Prison: Comparing National Standards To The Policies And Programs Of State Prisons, Savannah Danielle Rivera

Undergraduate Honors Theses

The population in women’s prisons in the United States has been rapidly increasing. This increase has also brought attention to the number of pregnancies and births that occur in a prison setting each year. In the United States, national standards have been developed by experts in obstetrics and gynecology, but currently, state prisons have varying policies and programs for pregnant, birthing, and postpartum people which leads to a vast difference in experiences and a disparity in treatment. To better understand what the policies and programs for maternity in prison are and how they measure up to national standards, the present …

Pandemic And Substance Use: A Cross-Sectional Analysis, Vanessa E. Ermilio

Electronic Theses, Projects, and Dissertations

Background: The COVID-19 Pandemic called individuals to stay at home which may have impacted individuals to become not only physically, but socially isolated as well. With social isolation, comes an increase in mental health complications which may lead to an increase in substance use. The purpose of this study was to evaluate the potential association between COVID-19 social isolation and substance use among college students.

Method: The present study’s data was collected from a public, four-year university located in Southern California. The survey was disseminated through instructors at the university and students were incentivized with extra course credit to participate. …

The Prevalence Of Iron Deficiency And Obesity Among Young Children In The United States, Mirriam Abunaja

Electronic Theses, Projects, and Dissertations

Background The coexistence of obesity and iron deficiency among children is one manifestation of the double burden of malnutrition (DBM) and is a public health concern. This study aims to provide useful insight on public health knowledge by presenting a current snapshot of the coexistence of obesity and iron deficiency among pre-school aged children as well as specific risk factors.

Methods This analysis utilizes secondary data from a publicly accessible, national database, the National Health and Nutritional Examination Survey (NHANES). The data examined were retrieved from the years 2015-2016 and 2017-2018. Chi-squared tests were used to test each thesis question. …

How The Bacteria In Your Gut May Calm The Butterflies In Your Stomach, Hailey Naiper

Scientific Kenyon: The Neuroscience Edition

No abstract provided.

Linking Soil Microbial Community Structure To Potential Carbon Mineralization: A Continental Scale Assessment Of Reduced Tillage, Elizabeth L. Rieke, Shannon B. Cappellazzi, Michael Cope, Daniel Liptzin, G. Mac Bean, Kelsey L.H. Greub, Charlotte E. Norris, Paul W. Tracy, Ezra Aberle, Amanda Ashworth, Oscar Bañuelos Tavarez, Andy I. Bary, R. L. Baumhardt, Alberto Borbón Gracia, Daniel C. Brainard, Jameson R. Brennan, Dolores Briones Reyes, Darren Bruhjell, Cameron N. Carlyle, James J.W. Crawford, Cody F. Creech, Steve W. Culman, Bill Deen, Curtis J. Dell, Justin D. Derner, Thomas F. Ducey, Sjoerd W. Duiker, Miles F. Dyck, Benjamin H. Ellert, Avelino Espinosa Solorio, Steven J. Fonte, Simon Fonteyne, Ann Marie Fortuna, Jamie L. Foster, Lisa M. Fultz, Audrey V. Gamble, Charles M. Geddes, Deirdre Griffin-Lahue, John H. Grove, Stephen K. Hamilton

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Potential carbon mineralization (Cmin) is a commonly used indicator of soil health, with greater Cmin values interpreted as healthier soil. While Cmin values are typically greater in agricultural soils managed with minimal physical disturbance, the mechanisms driving the increases remain poorly understood. This study assessed bacterial and archaeal community structure and potential microbial drivers of Cmin in soils maintained under various degrees of physical disturbance. Potential carbon mineralization, 16S rRNA sequences, and soil characterization data were collected as part of the North American Project to Evaluate Soil Health Measurements (NAPESHM). Results showed that type of cropping system, intensity of physical …

Biological Sex Differences In The Monodelphis Domestica: Investigating Behavioral Responses In Environmental Enrichment And Conditioned Place Preference Paradigms, Katelynn M. Renteria

Theses and Dissertations

The Monodelphis domestica, commonly known as the grey short-tailed opossum, has become an increasingly frequented animal model for areas of psychological study, including comparative psychology. Despite the growing interest in utilizing the Monodelphis as an animal model, several areas of research remain limited in what has been studied. This includes associative learning and the effects of environmental enrichment on the Monodelphis. This study novelly incorporates the two using environmental enrichment with the conditioned place preference (CPP) paradigm to both diversify associative learning literature and expand existing knowledge on the Monodelphis domestica. The CPP paradigm included interactive objects as environmental …

Anthropometric Measures Correspond With Functional Motor Outcomes In Females With Rett Syndrome, Kathleen J Motil, Suzanne Geerts, Fran Annese, Jeffrey L Neul, Tim Benke, Eric Marsh, David Lieberman, Steven A Skinner, Daniel G Glaze, Peter Heydemann, Arthur Beisang, Shannon Standridge, Robin Ryther, Jane B Lane, Lloyd Edwards, Alan K Percy

Children’s Nutrition Research Center Staff Publications

Objective: To characterize growth and anthropometric measurements in females with Rett syndrome and compare these measurements with functional outcomes.

Study design: We obtained longitudinal growth and anthropometric measurements from 1154 females with classic and atypical Rett syndrome seen between 2006 and 2019 in the US Natural History Study. We calculated the Clinical Severity Score, Motor Behavior Assessment score, and arm and leg muscle areas and recorded the functional assessments of arm and hand use and ambulation. We compared growth and anthropometric variables from females with Rett syndrome in regard to normative data. We analyzed Clinical Severity Score, Motor Behavior Assessment, …

Organ Fat In Latino Youth At Risk For Type 2 Diabetes, Janiel L Pimentel, Kiley B Vander Wyst, Erica G Soltero, Armando Peña, Houchun H Hu, Smita S Bailey, Amber Pokorney, Stephanie L Ayers, Ana Martinez Valencia, Micah L Olson, Gabriel Q Shaibi

Children’s Nutrition Research Center Staff Publications

Purpose: Obesity in youth increases the risk for type 2 diabetes (T2D) and elevated abdominal adipose tissue and organ fat may be particularly deleterious. The purpose of this study was to examine associations among measures of adiposity including total, visceral, and organ fat (hepatic and pancreatic) and whether these measures were independently associated with glycemia in Latino youth at risk for diabetes.

Methods: Latino adolescents (47 boys and 32 girls, 13.7 ± 1.4 years) with obesity (BMIz 2.3 ± 0.3) were assessed for total fat by DXA and visceral and organ fat by 3 T magnetic resonance imaging. Glycemic indicators …