Digital Commons Network^™

Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah

Theses and Dissertations

It is very important that the process of transcription is correctly carried out in the cell for the faithful expression of the genetic code. However, should mistakes happen, they can result in transcription errors which interfere with the protein-making machinery of the cell. This will result in accumulation of proteins and dysfunctional proteins that have the potential of causing diseases like Alzheimer’s. Oxidative damage caused by hydrogen peroxide is known to cause transcription errors in organisms like yeast. It is therefore important to investigate the extent to which hydrogen peroxide can damage cells.

Influence Of Diverse Forage Environments On Honey Bee Colony Health, Angus Catchot Iii

Theses and Dissertations

Honey bees are important pollinators that face a multitude of stressors in their environment such as pathogens, parasite pressure, forage availability and pesticide exposure. This study examined how the makeup of different environments and the stressors related to those environments are affecting honey bee health in Mississippi. A field experiment was conducted during the first year of the study across four distinct landscapes ranging from intensively cultivated cropland to predominantly natural forage habitats to assess the impact of landscape availability on varying honey bee colony health parameters. Locations that had cultivated crops within foraging range produced more honey and brood …

Characterizing The Impact Of Cover Crop On Soil Microbiome Function Affecting C And N Inputs In Corn Production System, Durga Purushotham Mahesh Chinthalapudi

Theses and Dissertations

Cover cropping (CC) is a widely adopted strategy to improve soil health and microbial diversity in agroecosystems. However, its influence on microbial community dynamics and ecosystem functions remains context-dependent, particularly under variable nitrogen (N) inputs. This dissertation integrates a three-year field study (2021-2024) in corn-based systems with a meta-analysis of 473 soil samples from diverse Mississippi cropping systems to evaluate CC effects on soil microbial structure, function, and ecosystem multifunctionality. In the field study, soil bacterial and fungal communities were profiled using high-throughput amplicon sequencing (16S rRNA for bacteria, ITS2 for fungi). Seven CC treatments ryegrass, balansa, radish, red clover, …

Edna Surveillance And Population Genomics Of The Invasive Loaches Introduced To The United States, Tobin J. Davidson

Theses and Dissertations

Invasive species represent a growing threat to the ecosystems and economies of the United States. The southeastern United States is an aquatic biodiversity hotspot, and the decline of multiple native species already facing extinction is attributed to a rapidly growing number of nonindigenous freshwater fishes. Next-generation sequencing was used to analyze the population genomics of several populations of Pond Loach (Misgurnus anguillicaudatus) introduced to the United States. Three evolutionarily significant units of Misgurnus loaches were found, suggesting the invasion of multiple different species in the United States. Additionally, noninvasive environmental DNA (eDNA) protocol designed for early detection of invasive freshwater …

Interspecific Competition Effects On Biomass Allocation In A Young, Fertilized Longleaf Pine Stand In Central Mississippi, Baylor Doughty

Theses and Dissertations

Restoration of longleaf pine (Pinus palustris Mill.) can be challenging on sites with high densities of naturally regenerated loblolly pine (Pinus taeda L.). This study aims to understand how interspecific competition impacts early establishment of planted longleaf pine. The study area was a complete block design to evaluate two different fertilization methods and application of diazotrophic endophytes. While the site was chemically prepared, high densities of loblolly pine established from adjacent stands. Measurements included survival, root collar diameter, height, and neighboring competition. Soil properties, including texture and nitrogen mineralization rates, were also evaluated. Results indicate that fertilization had a significant …

Social Validity Of Functional Analysis Variations, Rita M. Druffner

Theses and Dissertations

The functional analysis was developed to systematically identify the antecedent and consequent conditions mediating challenging behavior. Modifications to the traditional procedures have been developed to address barriers to implementation, including duration, environmental control, and safety. Much of the research surrounding functional analyses addresses effectiveness, barriers to implementation, and practitioner acceptability. However, there is a lack of research assessing caregiver social validity of functional analysis procedures. Social validity is the assessment of the goals, procedures, and outcomes of behavior analytic practice. Even though there has been advocacy for including measures of social within behavior analytic research and practice, there is limited …

Strategic Use Of Exogenous Feed Enzymes And Sodium Bisulfate To Optimize Broiler Production, Spencer Thomas Karn

Theses and Dissertations

Poultry producers must continually evaluate nutritional strategies to enhance broiler performance and sustainability. Chapter II assessed sodium bisulfate (SB) applied to litter, feed, and water across a 42-day grow-out. Applying SB to litter reduced pH, while 0.3% and 0.4% dietary SB improved feed conversion ratio (FCR). Water acidification with SB during the final week did not impair performance, supporting its use as a preharvest intervention. Chapter III evaluated phytase at 500, 1500, and 2000 FTU/kg, with or without protease, in reduced amino acid diets over 56 days. Birds fed a nutrient-adequate diet with 1500 FTU/kg phytase outperformed all reduced-amino acid …

Impact Of Buffered Dry Vinegar And Fermented Onion Juice On The Quality And Shelf-Life Of Fresh Pork Breakfast Sausage, Emily M. Little

Theses and Dissertations

The demand for clean-label meat products has increased interest in natural alternatives to synthetic antioxidants and antimicrobials. This study evaluated the effects of buffered dry vinegar (BDV), fermented onion juice (FOJ), and their combination (CMB) on microbial stability and sensory quality of pork sausage during 9 days of refrigerated storage. Sausages were assigned to control, FOJ (0.5%), BDV (0.5%), or CMB (0.25% each) treatments. BDV and CMB significantly reduced aerobic and psychrotrophic counts by days 7-9, while yeast increased across all treatments over time, reaching ~7 Log CFU/g by day 9. Sensory analysis revealed lower oxidation and off-note intensity in …

Finite Element Modeling Of Plasma Membrane Injury From Mechanical Stress: A Combined Finite Element And Machine Learning Approach, Eric Flynn Mabowitz

Theses and Dissertations

Low back pain is a leading cause of disability across a wide range of occupations and environments. Exposure to whole-body vibration (WBV) has been linked to an increased prevalence of low back pain, as well as certain neurophysiological complications. While current understanding of WBV effects is largely based on tissue- and whole-body-level studies, a significant gap remains in knowledge regarding how vibrational forces propagate through individual cells. This knowledge gap limits a comprehensive understanding of how these forces affect the human body at the microscopic level. To address this, the present study employs both two-dimensional (2D) and three-dimensional (3D) finite …

Transforming Movement Assessment In Physical Therapy Through Subaquatic Data Collection, Kaitlyn Mcdonald

Theses and Dissertations

This study explored the interest and perceived barriers to integrating subaquatic diagnostic technologies (SDTs) into hydrotherapy among licensed physical therapists. Seventeen semi-structured interviews were conducted using a mixed-methods design, with 15 interviews included in the final analysis. Quantitative data were analyzed using chi-square tests, while qualitative responses were coded thematically. Results indicated no statistically significant relationships between SDT interest and career stage or hydrotherapy access, though qualitative data highlighted concerns about cost, limited access, and usability. Despite mixed interest in adoption, participants identified several potential benefits of SDTs, including improved treatment tailoring, increased patient buy-in, and enhanced outcome monitoring. Functional …

My Grandparents Raised Me: The Role Of Formative Individual And Family Experiences In Predicting Emerging Adult Substance Use, Attachment, And Mental Health Outcomes, Acacia Lopez

Theses and Dissertations

Individuals raised in a grandfamily, or family structure in which a grandparent raises their grandchildren, experience higher rates of adverse childhood experiences (ACEs), insecure attachment, and negative mental health outcomes during childhood. Literature on outcomes of these individuals across the lifespan is extremely limited, however, and it is unclear how formative individual and family experiences of being raised by grandparents carry into emerging adulthood (e.g., 18 to 25-years-old). Emerging adulthood is a developmental stage marked by significant instability and unpredictability that is linked with increased vulnerability to mental health concerns and substance use. It has been identified as an important …

Investigation Of Guayule Resin As An Oil-Based Wood Treatment, Jordan Miller

Theses and Dissertations

Development of alternative treatments for wood product protection is an ongoing focus throughout the wood products industries. All manufacturers hope to increase the use life of their products, while ensuring that their products do not have a harmful impact on their surrounding environment. One way of approaching this is to source potential components from other agricultural sources. Guayule resin is produced as a by-product of rubber extraction from the guayule plant (Parthenium argentatum). The resin has been reported to have insecticidal and microbial properties, but there are numerous problems with utilization, including how to extract it and apply it due …

Unboxing The Black Box: Graph-Based Interpretability In Transformer Models, Ramak Nassiri

Theses and Dissertations

This thesis introduces a novel interpretability framework for transformer encoder models by hypothesizing that their internal embedding updates define a state transition system. We propose that transformers implicitly learn token-to-token influence dynamics, which can be analyzed using graph-theoretic methods. To validate this, we construct transition graphs from embedding changes and rank token importance using the PageRank algorithm. We develop two transformer models from scratch: a self-supervised model that incorporates serotype tokens to learn contextualized embeddings, and a supervised model initialized with these embeddings. Cosine similarity analysis of their token influence patterns reveals strong structural alignment, with values exceeding 93%. This …

Timber Price Trends, Transmission, And The Impact On Loblolly Pine Plantation Management In The United States South., Samjhana Panthi

Theses and Dissertations

This study analyzed the impact of pine timber price trends on optimal rotation age and price transmission relationship in the timber market in the US South. Price trends and volatilities were incorporated into discounted cash flow analyses to determine stochastic optimal rotation age. The results revealed that negative price trends reduced the optimal rotation age and maximum land expectation values compared with the base case of the Faustmann model's constant timber prices. Also, I performed a vertical price transmission study for the US South pine timber market using a Smooth Transition Autoregressive (STAR) model. Price transmission was linear in the …

Impact Of Overseeding Cover Crops On Dryland Soybeans In Mississippi Delta, Michael C. Pruden

Theses and Dissertations

In the Mississippi Delta, continuous dryland soybean (Glycine max L.) production practice is a selection for those that do not or cannot irrigate their crops. However, no crop rotation results in yield losses due to diseases, increased insect population, weed species pressure, nutrient leaching, and soil erosion. Incorporation of cover crops might offer potential benefits but needs further investigation. The objectives were to determine the optimum cover crop planting time (R6 and harvest) and ideal cover crop species, and evaluate their impact on dryland soybean grain yield, quality, and plant population. R6 overseeded cereal rye (Secale cereale L.) produced the …

Feed-Based Strategies To Improve Poultry Production Efficiency, Anna Kathryn Riggs

Theses and Dissertations

The poultry industry continues to make significant strides in efficiency and innovation, particularly through advancements in nutrition. This thesis explores two key areas within broiler nutrition that are essential to supporting sustainable, cost-effective poultry production. First, the potential of a next-generation exogenous carbohydrase enzyme blend containing beta-mannanase and endo-glucanase is investigated when supplemented into reduced-energy, all-vegetable diets based on corn, soybean meal, and corn distillers dried grains with solubles in male broilers over a 42-day grow-out period, including processing (Chapter II). Second, the thesis examines the use of modeling strategies such as cubic, quadratic, kernel and smoothing spline to predict …

Microbiomics Of Amazonian Fishes And Associations With Human Pathogens (Mycobacterium Ulcerans), Matthew Edwin Scott

Theses and Dissertations

The Amazon Rainforest and Guiana Shield are recognized as two of the most biodiverse ecosystems on Earth, particularly when considering macroorganisms. Relatively little attention has been paid to the microbiological diversity within rainforest ecosystems, or to the interactions among macro- and microbiological communities. To this end, I characterized the effects of habitat and host phylogenic parameters on the gut microbiome of freshwater fishes along the coast and within the Approuague River watershed in French Guiana. The results indicate a river continuum effect on the microbial composition of fishes, as well as a similar continuum pattern along the coast of French …

Plant, Pollinator, And Bird Communities In Working Landscapes Across The Southeastern United States., Craig Andrew Sklarczyk

Theses and Dissertations

The southeastern U.S. is a hot spot for biodiversity, yet we continue to see losses in numerous species and their important ecosystem functions and services. Because private working landscapes are widespread and important to the southeastern U.S. and Mississippi’s economy, we must ensure we are conserving species on these private lands as well. In this project, We examined two groups of taxa, bird and bee communities, each which perform vital ecosystem functions in two of the most spatially dominant systems (working pine forest and row-crop agriculture) in Alabama and Mississippi. We examined bee communities in set-aside hardwood forests at different …

Detection, Occupancy, And Abundance Of Vultures In Mississippi, Jonathan Smith

Theses and Dissertations

The purpose of this study was to examine influences of tree cover, light pollution, average ambient air temperature, and roadkill abundance on Black Vulture (Coragyps atratus) and Turkey Vulture (Cathartes aura) detection, occupancy, and abundance within Mississippi. Data was collected via road surveys. Highways were selected as transects of 290 m in length to survey for vultures and roadkill. The locations of detected vultures were GPS marked. To evaluate relationships of vulture detection, occupancy, and abundance with the covariates, I used dynamic occupancy models and open binomial N-mixture models. Average ambient air temperature had a positive relationship with Black Vulture …

Optimizing Osb Quality: Assessing The Influence Of Beta-Cyclodextrin With Essential Oil Treatments, Ethan Garrett Turo

Theses and Dissertations

This study evaluated the mechanical and dimensional performance of oriented strand board (OSB) panels treated with beta-cyclodextrin-essential oil compounds, including betacyclodextrin-only, beta-cyclodextrin-trans-cinnamaldehyde, beta-cyclodextrin-thymol, and betacyclodextrin-nickel. OSB panels were produced using a proprietary spraying system and Dieffenbacher press and tested according to ASTM standards for internal bond strength, modulus of elasticity (MOE), modulus of rupture (MOR), water absorption, and thickness swelling. Results showed that beta-cyclodextrin-trans-cinnamaldehyde enhanced MOE and MOR, while beta-cyclodextrin-thymol significantly improved internal bond strength. Beta-cyclodextrin-nickel demonstrated strong performance in both mechanical strength and water resistance. However, 24-hour submersion results indicated that water resistance may be surface limited. All treatments …

Bridging Physics And Machine Learning: Physics-Informed Neural Networks (Pinn) For Wire-Arc Additive Manufacturing (Waam) Thermal Prediction, Haiye (Justin) Xie

Theses and Dissertations

Over the past decade, additive manufacturing (AM) has gained substantial use in industry and research. It is a promising alternative to traditional subtractive and casting manufacturing. AM not only saves time and materials but can also construct intricate structures within components for specific purposes. Wire-Arc Directed Energy Deposition (WA-DED) is one of the additive manufacturing technologies that offers a high extrusion rate of metal wire materials to fabricate near-net-shape metal components. Accurate temperature control is crucial for controlling the microstructure of metal components fabricated through the AM process. Machine learning has the ability to analyze real-time sensor data, such as …

Artificial Transneurons Emulate Neuronal Activity In Different Areas Of Brain Cortex, Rivu Midya, Ambarish S Pawar, Debi P Pattnaik, Eric Mooshagian, Pavel Borisov, Thomas D Albright, Lawrence H Snyder, R Stanley Williams, J Joshua Yang, Alexander G Balanov, Sergei Gepshtein, Sergey E Savel'ev

2020-Current year OA Pubs

Rapid development of memristive elements emulating biological neurons creates new opportunities for brain-like computation at low energy consumption. A first step toward mimicking complex neural computations is the analysis of single neurons and their characteristics. Here we measure and model spiking activity in artificial neurons built using diffusive memristors. We compare activity of these artificial neurons with the spiking activity of biological neurons measured in sensory, pre-motor, and motor cortical areas of the monkey (male) brain. We find that artificial neurons can operate in diverse self-sustained and noise-induced spiking regimes that correspond to the activity of different types of cortical …

Role Of Patient-Reported Measures (Prms) In Addressing Ethical Challenges During Telemedicine Consultation: A Narrative Review, Asiya Attar, Kasturi Shukla

Patient Experience Journal

Introduction: Telemedicine has revolutionized medical care delivery by emphasizing on Patient-Centred Care (PCC). Patient Reported Measures (PRMs) can assist in providing PCC since it assesses the treatment outcomes and patient experience. However, using PRMs is not just limited to gauging clinical efficiency; it can also play a role in addressing the ethical challenges in telemedicine. Yet this aspect of PRMs remains underexplored. Method: Literature search was conducted using a combination of keywords from the Google Scholar, Scopus, and Web of Science databases. 126 peer-reviewed journal articles in English from 2015 to 2024 were screened, and 34 relevant full-text …

Neutrophil-To-Lymphocyte, Monocyte-To-Lymphocyte, And Platelet-To-Lymphocyte Ratio In Acute Hospitalized Patients With Schizophrenia, Apichan Dangrungroj, Mayteewat Chiddaycha

Chulalongkorn Medical Journal

Background: Schizophrenia has been increasingly linked to inflammation. The neutrophil-to-lymphocyte ratio (NLR), monocyte-to-lymphocyte ratio (MLR), and platelet-to-lymphocyte ratio (PLR) have emerged as potential indicators of systemic inflammation.

Objectives: The objectives are to compare NLR, MLR, and PLR between patients with schizophrenia and healthy controls, and to investigate the factors associated with NLR. Methods: This retrospective study included 102 sex- and age-matched patients hospitalized with schizophrenia and control subjects. NLR, MLR, and PLR were calculated from the Complete Blood Count (CBC) results and compared between groups. Sociodemographic data and clinical characteristics were analyzed using multiple linear regression to identify …

Comparison Of Blood And Urinary Ketamine Profiles Among Different Causes Of Death In Thai Postmortem Cases, Supanida Leungsukjaroen, Sunitda Khawthong, Peerayuht Phuangphung

Chulalongkorn Medical Journal

Background: Ketamine is a substance that is commonly abused, especially in young adults. Blood and urinary ketamine profiles are important for the interpretation of causes of death. Objective: To compare blood and urinary ketamine profiles between different causes of death in Thai postmortem cases.

Methods: A cross-sectional study was conducted in 40 Thai postmortem cases whose urine samples tested positive for ketamine. Sex, age, cause of death, manner of death, blood alcohol concentration (BAC), and concomitant drugs found with ketamine in subjects were recorded for each case. Blood and urinary ketamine and its two metabolites (norketamine and dehydronorketamine …

Incidence Of Cytogenetic Abnormalities Detected By Fish Analysis In Multiple Myeloma Cases: A Seven-Year Study From A Cytogenetic Laboratory In King Chulalongkorn Memorial Hospital, Thailand (2018–2024), Montakarn Tansatit, Nutcharee Jongpornchai, Suwannee Songchart, Kittipornpan Krajokpap, Hudadini Da-Oh

Chulalongkorn Medical Journal

Background: Multiple myeloma (MM) is a genetically heterogeneous plasma cell malignancy with cytogenetic abnormalities influencing prognosis and treatment outcomes. Fluorescence in situ hybridization (FISH) is crucial for detecting clinically significant abnormalities, including IGH translocations and deletions (e.g., del(17p)), particularly in non-dividing plasma cells. However, cost and accessibility challenges limit comprehensive testing in resource-constrained settings like Thailand. Objectives: To investigate the incidence of cytogenetic abnormalities detected by FISH in MM cases over seven years in a Thai population, highlighting regional trends and barriers to comprehensive testing. Methods: A retrospective analysis was conducted on 360 bone marrow samples from MM patients between …

Aristotle, John Herman Randall Jr.

Hannah Arendt Marginalia - All

New York : Columbia University Press, 1962

Call #: B485 .R3 1962

Contains underlining and marginal lining

PDF Information: 92 pages – 70 MB

Die Tiergestalt, Adolf Portmann

Hannah Arendt Marginalia - All

Basel, F. Reinhardt [1960]

Call#: QL799 .P6 1960

Contains marginalia: underlining.

PDF Information: 15 pages – 780 KB

Zoologie Und Das Neue Bild Des Menschen, Adolf Portmann

Hannah Arendt Marginalia - All

Reinbek bei Hamburg : Rowohlt, 1951

Call #: QH368 .P65 1951

Arendt copy contains marginal lining and underlining

PDF information: 27 pages – 2.7 MB

The New Science: 3 Complete Works, Max Planck

Hannah Arendt Marginalia - All

[New York] : Meridian Books, 1959

Call#: QC6 .P623

Contains marginalia, underlining and marginal lining. Also contained ephemera: a 1957-1958 Princeton- Penn Station train schedule covered with local business advertisements.

PDF Information: 77 pages – 5.1 MB