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Functional Utility Of Gold Complexes With Phosphorus Donor Ligands In Biological Systems, Adedamola S. Arojojoye, Samuel G. Awuah Jan 2025

Functional Utility Of Gold Complexes With Phosphorus Donor Ligands In Biological Systems, Adedamola S. Arojojoye, Samuel G. Awuah

Chemistry Faculty Publications

Metallo-phosphines are ubiquitous in organometallic chemistry with widespread applications as catalysts in various chemical transformations, precursors for organic electronics, and chemotherapeutic agents or chemical probes. Here, we provide a comprehensive review of the exploration of the current biological applications of Au complexes bearing phosphine donor ligands. The goal is to deepen our understanding of the synthetic utility and reactivity of Au-phosphine complexes to provide insights that could lead to the design of new molecules and enhance the cross-application or repurposing of these complexes.


Iodinated Disinfection Byproduct Formation From Iohexol In Sunlit And Chlorinated Urban Wastewaters, Reagan Patton Witt, Marcelo I. Guzman Jan 2025

Iodinated Disinfection Byproduct Formation From Iohexol In Sunlit And Chlorinated Urban Wastewaters, Reagan Patton Witt, Marcelo I. Guzman

Chemistry Faculty Publications

Iodinated disinfection by-products (I-DBPs) are of growing concern due to their elevated toxicity compared to their chlorinated counterparts, with links to adverse health effects such as bladder cancer and miscarriages. Medical imaging agents like iohexol, commonly used in healthcare facilities, introduce iodine into wastewater systems. This study investigates the photodegradation of iohexol and the subsequent formation of products, including I-DBPs, during simulated final wastewater treatment under chlorination and sunlight exposure. Experiments were conducted with solutions containing 30 μM iohexol, 3 mg L−1 humic acids, and 5.5 mg L−1 hypochlorite. Samples were irradiated at λ ≥ 295 nm and …


Improving Proteostasis Of Trafficking-Deficient GabaAReceptor Variants By Activating Ire1, Xu Fu, Ya Juan Wang, Kyung A. Lee, Lucie Y. Ahn, Xi Chen, Brock T. Harvey, Meng Wang, Hailey Seibert, Pei Pei Zhang, Adrian Guerrero, Ashleigh E. Schaffer, Christopher I. Richards, R. Luke Wiseman, Jeffery W. Kelly, Ting Wei Mu Jan 2025

Improving Proteostasis Of Trafficking-Deficient GabaAReceptor Variants By Activating Ire1, Xu Fu, Ya Juan Wang, Kyung A. Lee, Lucie Y. Ahn, Xi Chen, Brock T. Harvey, Meng Wang, Hailey Seibert, Pei Pei Zhang, Adrian Guerrero, Ashleigh E. Schaffer, Christopher I. Richards, R. Luke Wiseman, Jeffery W. Kelly, Ting Wei Mu

Chemistry Faculty Publications

Gamma-aminobutyric acid type A receptors (GABAARs) are essential for maintaining the excitation–inhibition balance in the central nervous system. Genetic variations of GABAARs result in a variety of neurological disorders, such as epilepsy. A key pathogenic mechanism involves protein misfolding and defective assembly of GABAARs in the endoplasmic reticulum (ER), resulting in impaired surface expression and loss of function. Here, we investigated three trafficking-deficient variants of the GABAAR α1 subunit (GABRA1), including D219N (ClinVar Variation ID: 127232), G251D (Variation ID: 419523), and P260L. We demonstrated that selective pharmacological activation of the IRE1/XBP1s signaling …


Computational Modeling Of The Heat Treatment Of White Oak Bound For Spirit Maturation, Kate E. Mclarney-Popham Jan 2025

Computational Modeling Of The Heat Treatment Of White Oak Bound For Spirit Maturation, Kate E. Mclarney-Popham

Theses and Dissertations--Chemical and Materials Engineering

Maturation of distilled spirits in white oak barrels is a long standing practice known to have great impact on spirit character. Much of this impact can be controlled by the thermal modification of the barrel, since thermal degradation of the wood determines what wood compounds are available to interact with the spirit during maturation. In this work, a computational model for the thermal degradation of wood was developed and, with flavor compound data from literature, was used to investigate the effect of heat treatment on lignin-derived flavor compounds. The computational model in this work accounted for three solid species, three …


Microstructural Characterization Of Complex Metal Alloy Systems With A Focus On Electron Microscopy, Alexandra Allamon Jan 2025

Microstructural Characterization Of Complex Metal Alloy Systems With A Focus On Electron Microscopy, Alexandra Allamon

Theses and Dissertations--Chemical and Materials Engineering

Multi-principal element alloys (MPEAs)/high-entropy alloys (HEAs) are a class of materials that provide novel and superior combinations of properties, with promise for use in challenging application areas that many of the current established materials cannot fit. With a higher number of constituent elements, many of the newly created alloys are compositionally complex in nature, known to contain combinations of relatively soft FCC phases, hard BCC phases, and, in some cases, even harder intermetallic phases. Microstructural study of these new materials is essential to understanding the enhanced properties they may possess, but their complexity can make this study much more challenging …


Ion Hydration In Bulk And Nanoconfined Water: Insights From Machine Learning Force Fields, Zachary D. Baker Jan 2025

Ion Hydration In Bulk And Nanoconfined Water: Insights From Machine Learning Force Fields, Zachary D. Baker

Theses and Dissertations--Chemical and Materials Engineering

Understanding ionic hydration remains a central challenge in physical chemistry and materials science, as the interactions between ions and water molecules govern diverse phenomena ranging from electrolyte transport to selective ion separation. While experimental techniques have provided invaluable insights into solvation energetics and coordination numbers, they often lack atomistic resolution, particularly under nanoscale confinement where direct measurement becomes infeasible. Molecular dynamics (MD) simulations can bridge this gap; however, conventional classical force fields are limited by their simplified, fixed functional forms and empirical parameterization, whereas ab initio molecular dynamics (AIMD) achieves higher accuracy at the expense of severe computational cost and …


Bacteria-Engineered Vesicles For Cancer Immunotherapy: From Immunomodulation In Vitro To Anti-Tumor Effects In Melanoma Models, Lan Li Jan 2025

Bacteria-Engineered Vesicles For Cancer Immunotherapy: From Immunomodulation In Vitro To Anti-Tumor Effects In Melanoma Models, Lan Li

Theses and Dissertations--Chemistry

Bacterial vesicles hold immense potential in various biomedical fields. Among these, outer membrane vesicles (OMVs) produced by Gram-negative bacteria are the most extensively studied. While the exact mechanism of OMV production remains unclear, numerous environmental factors have been shown to influence both their yield and composition. In this study, we investigated the effect of three different antimicrobial families on OMV production by E. coli. Interestingly, antimicrobials within the same family did not provide the same effects on OMV yield, suggesting that OMV production may not directly correlate with the antimicrobial mechanism of action. OMVs have demonstrated tumor-inhibitory activity in multiple …


Catalytic Deoxygenation Of Oleaginous Biomass To Renewable Diesel And Sustainable Aviation Fuel Via Decarboxylation/Decarbonylation, Chukwudalu Great Umenweke Jan 2025

Catalytic Deoxygenation Of Oleaginous Biomass To Renewable Diesel And Sustainable Aviation Fuel Via Decarboxylation/Decarbonylation, Chukwudalu Great Umenweke

Theses and Dissertations--Chemistry

Several technologies have been developed to produce hydrocarbon biofuels – renewable diesel (RD) and sustainable aviation fuel (SAF) – from fats, oils, and greases (FOG), with the hydroprocessing of esters and fatty acids (HEFA) representing one of the most mature pathways. In its current form, HEFA is mainly reliant on the hydrodeoxygenation (HDO) reaction, which has several drawbacks since HDO requires large amounts and pressures of hydrogen, feedstocks of high purity and cost, as well as problematic sulfided catalysts that risk contaminating the biofuel product with sulfur. A process based on decarboxylation/decarbonylation (deCOx) offers an attractive alternative to …


Insights Into Factors Influencing Radical Coupling Chemistry Of Monolignols During Lignification And Induced Changes In Plant Secondary Metabolism, Rachel Poornima Sutherland Jan 2025

Insights Into Factors Influencing Radical Coupling Chemistry Of Monolignols During Lignification And Induced Changes In Plant Secondary Metabolism, Rachel Poornima Sutherland

Theses and Dissertations--Chemistry

Lignin is a complex aromatic biopolymer and an important constituent in plant cell walls. The process of lignin biosynthesis, known as lignification, is poorly understood and challenging to study but has important implications in a variety of fields including sustainable energy, bioengineering, and materials science and is therefore of interest to pursue. In the final stage of lignification, H-, G-, and S-monolignols are oxidized by laccase and peroxidase enzymes to generate radical species that couple to form dimers and further oligomeric species to ultimately produce the lignin polymer. Biomimetic lignin model systems utilize in vitro oxidative coupling reactions as an …


Redox Control In A Fused Electron Transfer Flavoprotein From A Thermophilic Archaeon And Expanded Significance Of A Hydrogen Bond From A Conserved Histidine Residue That Contributes To Flavin Redox Tuning And Activation For Covalent Modification, Debarati Das Jan 2025

Redox Control In A Fused Electron Transfer Flavoprotein From A Thermophilic Archaeon And Expanded Significance Of A Hydrogen Bond From A Conserved Histidine Residue That Contributes To Flavin Redox Tuning And Activation For Covalent Modification, Debarati Das

Theses and Dissertations--Chemistry

In absence of O2 as terminal electron acceptors in anaerobic bacteria and archaea, carbohydrate metabolism is 15 times less efficient compared to aerobic energy metabolism resulting in energy deficit conditions. Despite their meager resources these anaerobes were able to generate H2 and a chemiosmotic potential able to drive energy demanding reactions such as CO2 or N2 fixation. These observations raised concerns as production of high energy reductants (H2) from mediocre fuels (NADH) defied the laws of thermodynamics.

In 2008, a known mechanism “electron bifurcation” but with flavins as redox mediators instead of quinones was …


Towards Automating The Study And Discovery Of Electroactive Π-Conjugated Molecules, Rebekah Ann Duke-Crockett Jan 2025

Towards Automating The Study And Discovery Of Electroactive Π-Conjugated Molecules, Rebekah Ann Duke-Crockett

Theses and Dissertations--Chemistry

Chemistry is entering a new paradigm of automation and data-driven discovery. Automated discovery is grounded in well-curated “big data.” As generative and predictive models fueled by simulation data see growing success, emerging robotic automation enables the generation of unprecedented volumes of experimental data. Automation-powered, data-driven approaches hold tremendous potential for groundbreaking insights and innovations, particularly in the study and discovery of electroactive π-conjugated molecules. Realizing this potential, however, requires democratizing chemical data and the automation needed to generate and use it. There is a need to expand access to the tools for findable, accessible, interoperable, and reusable (FAIR) data management …


Design And Synthesis Of Novel Ligands For Bioorthogonal Catalysis, Asymmetric Synthesis, And Ferromagnetic Behavior, Alexander G. Olivelli Jan 2025

Design And Synthesis Of Novel Ligands For Bioorthogonal Catalysis, Asymmetric Synthesis, And Ferromagnetic Behavior, Alexander G. Olivelli

Theses and Dissertations--Chemistry

Small molecule metal complexes have diverse applications including usage as catalysts, single molecule magnets, photosensitizers and pharmaceuticals. The first research project in this work reports a new ligand which dimerizes upon coordination to afford a trinuclear Cu(I) complex. Due to the coordination geometry of the Cu(I) metal centers, paired with the strong nitrogen coordinating groups, the resulting complex is resistant to oxidation even in the presence of strong oxidants. The complex is shown to be efficient in the CuAAC reaction and used to tag anticancer drug candidates in vitro. The next project focuses on a series of amidine-based ligands featuring …


The Physiology Of Exercise, Rosie Lanphere Jan 2025

The Physiology Of Exercise, Rosie Lanphere

Open Educational Resources

The Physiology of Exercise (3rd Edition) is an essential resource for upper-level undergraduates studying exercise science. Written by Rosie Lanphere, PhD, CSCS, this text provides a clear and comprehensive exploration of how the human body responds and adapts to physical activity.

Covering metabolism, energy expenditure, and the integrated roles of the nervous, cardiovascular, endocrine, muscular, and respiratory systems, this edition reflects the latest research and practical applications in the field.

Designed with students in mind, each chapter includes learning objectives, key terms, and scholarly questions to reinforce understanding. Whether preparing for a career in exercise science or professional certification, this …


Trace Level Benzoylecgonine Detections In Equine Plasma/Serum – A Proposed Interim Plasma Level Regulatory “Cut-Off“, Andreas F. Lehner, Kimberly Brewer, Levent Dirikolu, Abelardo Morales Briceñod, Robert Holland, George Maylin, Clara Fenger, Thomas Tobin Jan 2025

Trace Level Benzoylecgonine Detections In Equine Plasma/Serum – A Proposed Interim Plasma Level Regulatory “Cut-Off“, Andreas F. Lehner, Kimberly Brewer, Levent Dirikolu, Abelardo Morales Briceñod, Robert Holland, George Maylin, Clara Fenger, Thomas Tobin

Maxwell H. Gluck Equine Research Center Faculty Publications

Cocaine is a widely used human recreational substance routinely transferring at pharmacologically irrelevant trace level amounts to non-user humans and horses. Horses and humans rapidly demethylate cocaine to benzoylecgonine which is excreted in urine at concentrations approaching two thousand times higher than the corresponding plasma cocaine concentrations. In human workplace drug testing, these usually pharmacologically irrelevant trace level urinary detections of benzoylecgonine are handled by application of a 100 ng/ml urinary “cut-off“, as presented by the Substance Abuse and Mental Health Services Administration (SAMHSA). In horse racing several American states have long used published urinary “cut-offs“ for benzoylecgonine of from …


Secondhand Tobacco Smoke Exposure And Sleep Disturbance In School-Aged Children In Appalachian Ohio, Ketrell Mcwhorter, Christine Kim, Timothy J. Hilbert, Danielle E. Mcbride, Anthony A. Mangino, Patrick J. Parsons, Kurunthachalam Kannan, Erin N. Haynes Jan 2025

Secondhand Tobacco Smoke Exposure And Sleep Disturbance In School-Aged Children In Appalachian Ohio, Ketrell Mcwhorter, Christine Kim, Timothy J. Hilbert, Danielle E. Mcbride, Anthony A. Mangino, Patrick J. Parsons, Kurunthachalam Kannan, Erin N. Haynes

Epidemiology and Environmental Health Faculty Publications

Introduction: Secondhand tobacco smoke (SHS) exposure remains a major public health concern for children and has been implicated in sleep disturbances through biological and behavioral mechanisms. Different methods of measuring SHS exposure have yielded inconsistent results. This study examined the relationship between SHS exposure and sleep among rural Appalachian 7–9-year-olds, utilizing three SHS measurements: natural log-transformed (ln) serum cotinine concentrations, dichotomized serum cotinine levels (≥0.05 vs. <0.05 ng/ml), and parent/caregiver report of ≥1 smoker in the home. We hypothesized SHS-exposed children would have a significantly higher prevalence of sleep disturbance—e.g., short sleep, frequent snoring, night awakenings—compared to unexposed, regardless of measurement method. Methods: We used data from the Marietta Community Actively Researching Exposure Study, a cohort of 404 children in Marietta and Cambridge, Ohio. Sleep disturbances were parent/caregiver-reported. Linear models were used for continuous outcomes to estimate beta coefficients; log-binomial models with generalized estimating equations (exchangeable correlation) were applied for dichotomized outcomes to estimate prevalence ratios (PR), each with 95% confidence intervals (CI). Results: Twenty-six percent of children had a parent/caregiver report of ≥1 sleep disturbance. There was a 35% increased prevalence of short sleep [PR = 1.35 (95%CI:1.02–1.80), p =.04] with each unit increase of ln serum cotinine levels, adjusting for age, sex, parent education, BMI percentile, and history of breathing difficulties in the past two years. Increasing ln serum cotinine levels were associated with a significant 5.5-min decrease in average sleep duration in age-adjusted models. Conclusions: Higher SHS exposure was associated with poorer sleep outcomes, with serum cotinine emerging as the only measure linked to short sleep, underscoring the importance of smoke-free environments, particularly in rural communities, and objective exposure assessment.


Impact Of Feeding Different Fat Sources And Levels Of Vitamin E Isoforms To Heavy Slaughter Weight (150 Kg) Pigs: Ii. Belly And Bacon Quality, Marlee Kelley, Ding Wang, Ana Paula A.A. Salim, Merlin D. Lindemann, Gregg Rentfrow, Surendranath P. Suman Jan 2025

Impact Of Feeding Different Fat Sources And Levels Of Vitamin E Isoforms To Heavy Slaughter Weight (150 Kg) Pigs: Ii. Belly And Bacon Quality, Marlee Kelley, Ding Wang, Ana Paula A.A. Salim, Merlin D. Lindemann, Gregg Rentfrow, Surendranath P. Suman

Animal and Food Sciences Faculty Publications

Two independent experiments were performed to evaluate the effect of dietary fat sources and vitamin E supplementation on the characteristics of belly and bacon from heavy slaughter weights (150 kg) pigs. In experiment 1, 64 individually fed pigs (32 barrows and 32 gilts) were randomly assigned to 1 of the 8 dietary treatments in a 4 × 2 factorial arrangement. Four fat sources included cornstarch (CS), tallow (TW), corn oil (CO), and coconut oil (CN). Vitamin E supplementation included alpha-tocopheryl acetate (ATA) at 11 and 200 ppm. In experiment 2, individually fed pigs (n = 72; 36 barrows, 36 gilts) …


Impact Of Feeding Different Fat Sources And Levels Of Vitamin E Isoforms To Heavy Slaughter Weight (150 Kg) Pigs: I. Carcass Characteristics And Fresh Pork Quality, Marlee Kelley, Ding Wang, Gregg Rentfrow, Merlin D. Lindemann, Ana Paula A.A. Salim, Surendranath P. Suman Jan 2025

Impact Of Feeding Different Fat Sources And Levels Of Vitamin E Isoforms To Heavy Slaughter Weight (150 Kg) Pigs: I. Carcass Characteristics And Fresh Pork Quality, Marlee Kelley, Ding Wang, Gregg Rentfrow, Merlin D. Lindemann, Ana Paula A.A. Salim, Surendranath P. Suman

Animal and Food Sciences Faculty Publications

The objective of this study was to evaluate the effect of supplementing α-tocopheryl-acetate (ATA) and γ-tocopherol (GT) vitamin E isoforms with corn oil (CO) and tallow (TW) on carcass characteristics and meat quality characteristics of pigs grown to heavy weights (150 kg). Individually fed pigs (n = 72; 36 barrows, 36 gilts) were randomly assigned to 12 dietary treatments in a 2 × 6 factorial arrangement. Fat treatments were 5% TW and 5% CO. The vitamin E treatments included 4 levels of ATA (11, 40, 100, and 200 ppm) and 2 levels of mixed tocopherols (primarily GT; 40 and 100 …


Wet Aging For 21 Days Improves Tenderness Of Beef Biceps Femoris Muscle Without Affecting Color Stability, Ana Paula A.A. Salim, Mahesh N. Nair, Yifei Wang, Anna C.V.C.S. Canto, Gregg Rentfrow, Surendranath P. Suman Jan 2025

Wet Aging For 21 Days Improves Tenderness Of Beef Biceps Femoris Muscle Without Affecting Color Stability, Ana Paula A.A. Salim, Mahesh N. Nair, Yifei Wang, Anna C.V.C.S. Canto, Gregg Rentfrow, Surendranath P. Suman

Animal and Food Sciences Faculty Publications

Beef whole-muscle cuts containing biceps femoris (BF) exhibit inferior tenderness compared to cuts from the ribs and loins. The BF is a sizeable muscle in beef round, and enhancing tenderness of BF may increase the value of beef carcasses. While wet aging for 21 d improves beef tenderness, it can compromise color. Therefore, we evaluated the effects of wet aging on color and tenderness of beef BF to identify an optimal aging duration for these quality traits. The BF muscles were collected 24 h postmortem from 8 beef carcasses (n = 8), divided into equal sections, vacuum packaged, and aged …


Effects Of Ethanol And Neuropeptide-Y Signaling On Neurogenic Markers In The Hippocampus, Cassidy Taylor Leibold Jan 2025

Effects Of Ethanol And Neuropeptide-Y Signaling On Neurogenic Markers In The Hippocampus, Cassidy Taylor Leibold

Theses and Dissertations--Psychology

According to the National Survey of Drug Use and Health in 2023, 28.9 million people over the age of 12 in the United States meet criteria for an Alcohol Use Disorder (AUD). AUDs result in a range of both social and behavioral consequences, caused by damage to the central nervous system. The hippocampus is a brain structure that undergoes cellular changes in the presence of ethanol, thus causing structural and functional damage. Impairments in neurogenesis, or the production of new neurons, due to ethanol exposure result in decreased plasticity and consequently memory impairments. The mechanisms of these ethanol-induced decreases in …


Determining The Effects Of Light, Oxygen Diffusion, And 4-Hydroxy-2-Nonenal On Redox Stability Of Beef And Pork Oxymyoglobins, Rishav Kumar, Surendranath P. Suman, Runnan Li, Morgan M. Pfeiffer, Gretchen G. Mafi, Ranjith Ramanathan Jan 2025

Determining The Effects Of Light, Oxygen Diffusion, And 4-Hydroxy-2-Nonenal On Redox Stability Of Beef And Pork Oxymyoglobins, Rishav Kumar, Surendranath P. Suman, Runnan Li, Morgan M. Pfeiffer, Gretchen G. Mafi, Ranjith Ramanathan

Animal and Food Sciences Faculty Publications

Retail light conditions influence consumers’ perception of meat color. Previous studies have shown that lipid and myoglobin oxidation are interrelated. 4-Hydroxy-2-nonenal (HNE)-induced beef and pork oxymyoglobin (OxyMb) oxidation is influenced by pH, temperature, and atmospheric oxygen partial pressure. However, limited knowledge is available on the effects of HNE on myoglobin redox stability under light/dark and aerobic/anaerobic (either allow or not allow atmospheric oxygen in contact with myoglobin solution) systems. Therefore, the objective was to examine the effects of light and dark storage conditions (experiment 1) as well as to compare aerobic and anaerobic systems (experiment 2) on HNEinduced beef and …


Artificial Raising On Milk Replacer And Finishing Diet Did Not Affect Color And Oxidative Stability Of Longissimus Lumborum Muscles From Polypay Ram Lambs, Koushik Mondal, Surendranath P. Suman, Katherine G. Purvis, Gregg Rentfrow, Donald G. Ely, Brittany E. Davis, Jennifer Weinert-Nelson, Yifei Wang, Ana Paula A.A. Salim Jan 2025

Artificial Raising On Milk Replacer And Finishing Diet Did Not Affect Color And Oxidative Stability Of Longissimus Lumborum Muscles From Polypay Ram Lambs, Koushik Mondal, Surendranath P. Suman, Katherine G. Purvis, Gregg Rentfrow, Donald G. Ely, Brittany E. Davis, Jennifer Weinert-Nelson, Yifei Wang, Ana Paula A.A. Salim

Animal and Food Sciences Faculty Publications

Lamb production traits are affected by pre-weaning management (such as artificial raising on milk replacer) and finishing (forage vs. concentrate) strategies. The objective of the current study was to examine the effects of pre-weaning management and finishing systems on the color and oxidative stability of longissimus lumborum (LL) muscles from ram lambs. Polypay ram lambs were raised conventionally with ewes (CR; n = 10) or artificially on milk replacer (AR; n = 10). After weaning at 60 d, ram lambs in AR and CR were equally divided and randomly allocated to finishing on a high-forage (50:50 forage:concentrate; HF) or a …


Effects Of Feeding Varying Levels Of Mycotoxin-Containing Corn Fines On Diet Choice And Growth Performance Of Nursery Pigs, Duncan B. Paczosa, Tyler B. Chevalier, Sunday A. Adedokun, Lan Zheng, Merlin D. Lindemann Jan 2025

Effects Of Feeding Varying Levels Of Mycotoxin-Containing Corn Fines On Diet Choice And Growth Performance Of Nursery Pigs, Duncan B. Paczosa, Tyler B. Chevalier, Sunday A. Adedokun, Lan Zheng, Merlin D. Lindemann

Animal and Food Sciences Faculty Publications

Mycotoxins in feed are known to negatively affect growth and other physiological processes in pigs. Two experiments were conducted to investigate the effects of feeding diets with varying levels of mycotoxins and boron (a nutrient reported to mitigate some aspects of mycotoxicosis). Screenings from the 2020 crop year corn contained mycotoxin levels of 23,038 ppb total fumonisins (FUM), 1,446 ppb zearalenone (ZEA), and 5,032 ppb total deoxynivalenol (DON). The corn fines were added to a corn-soybean meal diet formulated to meet or exceed NRC (National Research Council. 2012. Nutrient requirements of swine. 11th Revised Edition. Washington, DC: The National Academies …


Evaluation Of Increasing Levels Of Mycotoxin-Containing Corn Fines And Mitigants On Nursery Pig Growth Performance, Duncan B. Paczosa, Tyler B. Chevalier, Sunday A. Adedokun, Lan Zheng, Merlin D. Lindemann Jan 2025

Evaluation Of Increasing Levels Of Mycotoxin-Containing Corn Fines And Mitigants On Nursery Pig Growth Performance, Duncan B. Paczosa, Tyler B. Chevalier, Sunday A. Adedokun, Lan Zheng, Merlin D. Lindemann

Animal and Food Sciences Faculty Publications

The effects of feeding corn fines (screenings) containing mycotoxin levels greater than the FDA guidance (fumonisins) and advisory (deoxynivalenol) levels were evaluated using 150 crossbred pigs (initial BW: 6.42 ± 0.06 kg; 90 barrows and 60 gilts) in an 8-wk study by adding contaminated corn fines to create six diets. The corn fines used contained prestudy analyzed mycotoxin levels of 20,334 ppb total fumonisin, 1,499 ppb zearalenone, and 5,075 ppb total deoxynivalenol. The corn fines were added into a corn-soybean meal basal diet at 0%, 20%, 40%, and 60% corn fines (Diets 1 to 4, respectively). Diet 5 was created …


Resilience After Prenatal Substance Exposure: Exploring The Role Of Cumulative And Specific Protective Factors In Predicting Toddlerhood Temperament Profiles, Anjeli Elkins Jan 2025

Resilience After Prenatal Substance Exposure: Exploring The Role Of Cumulative And Specific Protective Factors In Predicting Toddlerhood Temperament Profiles, Anjeli Elkins

Theses and Dissertations--Psychology

Objective

Prenatal exposure to common substances, including nicotine, marijuana, cocaine, methamphetamine, opiates, and alcohol, has been linked to a wide range of psychiatric disorders and neurodevelopmental impairments. Identifying protective factors that may improve temperament profiles in toddlers who have experienced prenatal substance exposure may protect against these adverse outcomes and is crucial for developing targeted early interventions.

Methods

Participants (n=92; Mage = 28.7 years; 47.0% White) were biological mothers of toddlers (Mage = 22.6 months) with prenatal substance exposure. Mothers responded to an online survey that gathered information on substance use during pregnancy, proposed perinatal protective factors, and child temperament. …


"We Talk About It At The Dinner Table": Parent Discussions Of Identity And Politics In Diverse Adoptive Families In The United States, Abigail L. Moore Jan 2025

"We Talk About It At The Dinner Table": Parent Discussions Of Identity And Politics In Diverse Adoptive Families In The United States, Abigail L. Moore

Theses and Dissertations--Psychology

Parents discussing identity and politics with their diverse adolescents can be protective against experiences of political stress and negative outcomes (Anderson, 2023). Identity discrepancies between parents and adolescents may complicate these conversations (McCrimmon et al., 2024). However, this research often only focuses on only one identity (e.g., race or gender; Mendez, 2022). Because negative political climates affect multiple identities simultaneously (Kassing et al., 2021), the current study explores political conversations in diverse, adoptive family contexts with varying (un)shared identities. Through reflexive thematic analysis (Braun & Clarke, 2021), 7 major themes were developed. Results suggest that identity discrepancies may underlie a …


Associations Between Queer Parent Family Socialization And Adolescent Outcomes Among Diverse Lgbtq+ Parent Families In The U.S., Nita U. Kulkarni Jan 2025

Associations Between Queer Parent Family Socialization And Adolescent Outcomes Among Diverse Lgbtq+ Parent Families In The U.S., Nita U. Kulkarni

Theses and Dissertations--Psychology

Queer parent family socialization refers to the way LGBTQ+ parents talk with their children about what it means to be queer in society, how to handle discrimination, and ways to have pride in their family’s identity. This construct has been linked with positive well-being outcomes in children, and this study used a strengths-based, mixed- methods framework informed by Minority Stress Theory and intersectionality to examine how queer parent family socialization related to several adolescent well-being outcomes, namely internalizing behaviors, social competence, and adaptive coping. Participants recruited across two projects were 191 queer parents with an adolescent and 114 adolescents with …


Weighted Family History Density Of Substance Use: Influence On Participant Substance Use Onset, Escalation, And Duration, Carleigh A. Litteral Jan 2025

Weighted Family History Density Of Substance Use: Influence On Participant Substance Use Onset, Escalation, And Duration, Carleigh A. Litteral

Theses and Dissertations--Psychology

Substance use disorders impose a staggering toll on the United States (U.S.), straining healthcare systems, destabilizing communities, and profoundly impacting both individuals and families. Approximately one in six Americans aged 12 and older had a past-year substance use disorder in 2022 (Key Substance Use, 2022), and nearly one-third of adults experience a substance use disorder in their lifetime (Wu, 2010), contributing to an economic burden exceeding $400 billion annually (National Drug Threat Assessment, 2011). Family history of substance use disorders is a key predictor of vulnerability, with individuals who have affected relatives being 2–8 times more …


Exploring The Effects Of Transcranial Direct Current Stimulation Of The Right Inferior Frontal Gyrus On Inhibitory Control In Posttraumatic Stress Disorder, Colton Rippey Jan 2025

Exploring The Effects Of Transcranial Direct Current Stimulation Of The Right Inferior Frontal Gyrus On Inhibitory Control In Posttraumatic Stress Disorder, Colton Rippey

Theses and Dissertations--Psychology

Background: The right inferior frontal gyrus (rIFG) is implicated in stop signal reaction time (SSRT) performance – a common measure of inhibitory control – and emotional expression and control. Individuals with posttraumatic stress disorder (PTSD) exhibit poorer stop SSRT performance, which is associated with rIFG hypoactivity. Neuromodulation of the rIFG with transcranial direct current stimulation (tDCS) can significantly improve inhibitory control and reduce fearful responding to threatening stimuli. Research has yet to test the effects of multifocal tDCS targeting the rIFG on inhibitory control or emotional reactivity in individuals with PTSD.

Methods: The current study aims to examine the impact …


Relationship Between Anticipated Stress And Individuals’ Health-Related Behaviors, Julie Parsons Jan 2025

Relationship Between Anticipated Stress And Individuals’ Health-Related Behaviors, Julie Parsons

Theses and Dissertations--Psychology

Prior work in assessing the relationship between stress and health behaviors has identified the complex and multi-directional nature of these relationships. However, minimal work has assessed the possible relationships between stress anticipation and health behaviors such as diet, physical activity, and sleep outcomes in individuals. This work seeks to address this gap by conducting a daily diary study assessing within-person associations between stress anticipation and health behaviors over the course of a week. We hypothesized that daily stress anticipation would be negatively associated with dietary scores, physical activity engagement reports, sleep quality, and sleep duration while being positively correlated with …


Interparental Conflict And Sibling Relationship Quality In Emerging Adulthood: An Emotional Security Perspective, Courtlyn A. Fields Jan 2025

Interparental Conflict And Sibling Relationship Quality In Emerging Adulthood: An Emotional Security Perspective, Courtlyn A. Fields

Theses and Dissertations--Psychology

Sibling relationships are among the earliest lifelong relationships and have been found to be protective against family dysfunction and positive adjustment outcomes. Yet research on sibling relationships remains limited. The current study aims to expand understanding of sibling relationship quality in emerging adulthood through the application of Emotional Security Theory (EST). EST provides a framework for understanding how adult sibling relationships may be impacted by childhood experiences of destructive interparental conflict. A sample of 1222 undergraduates with siblings completed an online survey. Participants retrospectively reported on interparental conflict and emotional security in childhood, and reported on their current emotion regulation, …