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2022

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Sharenting: A Phenomenological Study Of Sharenting Through The Lens Of The Presentation Of Self, Evie Simmons D'Amico Aug 2022

Sharenting: A Phenomenological Study Of Sharenting Through The Lens Of The Presentation Of Self, Evie Simmons D'Amico

Doctoral Dissertations and Projects

The purpose of this phenomenological study was to describe and interpret the sharenting of moms who post to Facebook. Sharenting is a term to describe the practice of parents sharing about their children on social media. The theory that guided this study was Erving Goffman’s presentation of self. More specifically, the phenomenon was analyzed to understand how moms use their appearance, setting, and mannerisms to construct motherhood with their performance team on social media. This study used a scroll back interview method to gather data to co-create the essence of sharenting and interpret its meaning. Twenty moms who had elementary-aged …


Determination Of Atlantic Shortfin Mako Shark (Isurus Oxyrinchus) Population Genetic Structure And Comparison Of Mitogenomic Markers, Marissa Mehlrose Aug 2022

Determination Of Atlantic Shortfin Mako Shark (Isurus Oxyrinchus) Population Genetic Structure And Comparison Of Mitogenomic Markers, Marissa Mehlrose

All HCAS Student Capstones, Theses, and Dissertations

This study provides the first genomics-level, population structure and genetic diversity assessment of the shortfin mako (Isurus oxyrinchus) shark. The assessments were based on mitogenome sequences from makos distributed throughout the Atlantic Ocean, with Pacific mako mitogenomes used as a comparative outgroup. In addition to complete mitogenome-based analyses, I assessed individual mitochondrial coding gene and non-coding (Control Region) sequences for their comparative resolution properties as markers for revealing matrilineal population structure and genetic diversity. Sequencing of 125 makos in the western and eastern Atlantic across northern and southern hemispheres yielded 92 complete mitogenomes (16,698-16,702 bp) and 33 partial …


Inhibition Of Cdk8/19 Mediator Kinase Potentiates Her2-Targeting Drugs And Bypasses Resistance To These Agents In Vitro And In Vivo, Xiaokai Ding, Amanda C. Sharko, Martina S.J. Mcdermott, Gary P. Schools, Alexander Chumanevich, Hao Ji, Jing Li, Li Zhang, Zachary T. Mack, Vitali Sikirzhytski, Michael Shtutman, Laura Ivers, Norma O'Donovan, John Crown, Balazs Gyorffy, Mengqian Chen, Igor Roninson, Eugenia Broude Aug 2022

Inhibition Of Cdk8/19 Mediator Kinase Potentiates Her2-Targeting Drugs And Bypasses Resistance To These Agents In Vitro And In Vivo, Xiaokai Ding, Amanda C. Sharko, Martina S.J. Mcdermott, Gary P. Schools, Alexander Chumanevich, Hao Ji, Jing Li, Li Zhang, Zachary T. Mack, Vitali Sikirzhytski, Michael Shtutman, Laura Ivers, Norma O'Donovan, John Crown, Balazs Gyorffy, Mengqian Chen, Igor Roninson, Eugenia Broude

Faculty Publications

Breast cancers (BrCas) that overexpress oncogenic tyrosine kinase receptor HER2 are treated with HER2-targeting antibodies (such as trastuzumab) or small-molecule kinase inhibitors (such as lapatinib). However, most patients with metastatic HER2+BrCa have intrinsic resistance and nearly all eventually become resistant to HER2-targeting therapy. Resistance to HER2-targeting drugs frequently involves transcriptional reprogramming associated with constitutive activation of different signaling pathways. We have investigated the role of CDK8/19 Mediator kinase, a regulator of transcriptional reprogramming, in the response of HER2+BrCa to HER2-targeting drugs. CDK8 was in the top 1% of all genes ranked by correlation with shorter relapse-free …


Effects Of Localized Irrigation And Fertilizer On Woody Plant Establishment In Degraded Semi-Arid Environments, Holley M. Lund Aug 2022

Effects Of Localized Irrigation And Fertilizer On Woody Plant Establishment In Degraded Semi-Arid Environments, Holley M. Lund

Theses and Dissertations

Semi-arid native plant communities worldwide are often disturbed either intentionally or incidentally by human activity. In order to restore ecological function after human activities cease, native plant communities need to be restored. Woody plants are important to ecological function for many reasons including reducing erosion and providing food and shelter for wildlife. Unfortunately, woody plant establishment in these areas has proven to be challenging. Direct seeding efforts can be hindered by poor germination and low seedling emergence. To overcome this, seedling transplants are often used in harsh sites. However, transplanted woody seedlings often experience high mortality during the first year, …


Identifying Pneumococcal Proteins That Elicit An Iga Response, Amber Travis Aug 2022

Identifying Pneumococcal Proteins That Elicit An Iga Response, Amber Travis

Theses and Dissertations

Streptococcus pneumoniae is an asymptomatic colonizer of the upper respiratory tract as well as an opportunistic pathogen. Colonization is prerequisite to causing disease in a host, and it often involves formation of biofilms. There are currently two vaccines available against pneumococcus, both of which focus on preventing invasive disease by targeting the polysaccharide capsule of the most invasive serotypes. We hypothesized that by using membrane proteins expressed during the biofilm state, we can formulate an effective vaccine against colonization which would lead to an overall decrease in disease incidence. To do this, we selected protein candidates expressed during biofilm growth …


(Re)Constructing Homescapes: “Archaeological Remote Sensing” And Ground-Truthing Of The Walker Place Homestead At Spirit Hill Farm, Tate County, Mississippi, Gabriel Griffin Aug 2022

(Re)Constructing Homescapes: “Archaeological Remote Sensing” And Ground-Truthing Of The Walker Place Homestead At Spirit Hill Farm, Tate County, Mississippi, Gabriel Griffin

Theses and Dissertations

This thesis focuses on an early nineteenth-century homestead known as the Walker Place homestead at Spirit Hill Farm in northern Mississippi. The goal of this thesis is to conduct a ground-penetrating radar (GPR) and shovel test survey to explore how changing landscapes simultaneously (re)create and destroy senses of place or Homescapes. Homescapes have received little attention in the field of archaeology and have not been applied to Euro-American Homescapes. I apply this theoretical construct in a novel way as a venture to further develop an avenue in archaeology to be collaborative and understand the past in a way that accurately …


The Perception And Use Of Native Plants In The Landscape: Understanding The Practices Of Landscape Architects In The Southeast United States, Megan Wichlan Aug 2022

The Perception And Use Of Native Plants In The Landscape: Understanding The Practices Of Landscape Architects In The Southeast United States, Megan Wichlan

Theses and Dissertations

Landscape architects and designers have the ability to construct plantings in a landscape with native or non-native plants, or a combination of both plant types. The question at hand is, why choose one over the other? This study explores what might impact the plant choice decisions of practicing landscape architects in the southeast United States. A survey is utilized to understand how respondents make plant choice decisions and perceive native plants. Comparisons between previous studies are made focusing on their distribution methods, survey populations and major findings. The findings of this study are not conclusive due to a small response …


Effect Of Cover Crops, Grazing And Tillage Practices On Soil Microbial Community Composition, Function, And Soil Health In East Central Mississippi Soybean Production System., Namita Sinha Aug 2022

Effect Of Cover Crops, Grazing And Tillage Practices On Soil Microbial Community Composition, Function, And Soil Health In East Central Mississippi Soybean Production System., Namita Sinha

Theses and Dissertations

Integrating crop and livestock is being considered to improve soil health by carbon sequestration. A two-year study (2019-2021) at CPBES in Newton, MS was aimed to evaluate soil microbial diversity in the warm, humid regions, specifically southeastern USA. Amplicons targeting bacterial 16S rRNA genes and fungal ITS2 regions were sequenced. Taxonomic assignment and microbial diversity characterization were performed using QIIME2®. Soil fungal diversity showed significant differences (alpha diversity, p = 0.031 in yr. 2020 and beta diversity, p = 0.037 in yr. 2021). Canonical Correspondence Analysis (CCA) and Mantel test showed significant influence on fungal diversity due to …


The Effect Of Maternal Melatonin Supplementation During Mid To Late Gestation On Offspring Muscle Growth And Development In Swine, Thomas Warren Dobbins Aug 2022

The Effect Of Maternal Melatonin Supplementation During Mid To Late Gestation On Offspring Muscle Growth And Development In Swine, Thomas Warren Dobbins

Theses and Dissertations

Melatonin is a neuroendocrine hormone most often associated with circadian rhythms, but also has antioxidant and vasodilative properties. Through these properties, exogenous melatonin supplementation has been shown to increase both fetal and postnatal parameters in livestock species, however no research has been performed in swine. This project was split into a prenatal and postnatal study, wherein sows were supplemented from approximately gestational day 38 to 100 before undergoing a terminal hysterectomy for the prenatal portion, and from gestational day 60 to farrowing. Melatonin increased fetal morphometrics in a seasonal dependent manner, where fetuses from melatonin supplemented sows had increased measurements …


Phenotypic Evaluation Of Energycane (Saccharum Spp.) Genotypes In Northcentral Mississippi, Wyatt Armistead Eason Aug 2022

Phenotypic Evaluation Of Energycane (Saccharum Spp.) Genotypes In Northcentral Mississippi, Wyatt Armistead Eason

Theses and Dissertations

As fossil fuel supplies decrease and concerns of climate change increase, the search for alternative sources of fuel has pushed biomass crops to the forefront of discussion. Saccharum spontaneum readily hybridizes with commercial sugarcane and lends cold tolerance and greater yields to the hybrid progeny, called energycane. Twenty genotypes were tested against an energycane variety (Ho 02-113) as a control. Two locations were tested: the HH Leveck Animal Research Center (planted in 2019), and the Bearden Dairy Research Center (planted in 2020). The Bearden Dairy Research Center yielded significantly higher than the HH Leveck Animal Research Center regarding dry matter …


Natural Capital Value Of Fisheries Under Environmental Stressor: A Case Of Blue Crab Under Hypoxia In The Gulf Of Mexico, Shelby Leigh Brewer Aug 2022

Natural Capital Value Of Fisheries Under Environmental Stressor: A Case Of Blue Crab Under Hypoxia In The Gulf Of Mexico, Shelby Leigh Brewer

Theses and Dissertations

Environmental threats to fisheries are a rising concern for fishery managers. Gulf of Mexico hypoxia is particularly concerning. In order to properly manage Gulf fisheries, the sustainability of species stock and its natural capital values should be analyzed. As an empirical effort, I use blue crab in Louisiana waters as a case study to build a bioeconomic model of blue crab under hypoxia. I apply the natural capital valuation approach to estimate the blue crab value function under hypoxia in order to assess blue crab sustainability. I find that blue crab management in Louisiana under hypoxia is not sustainable, being …


Incorporating Follicle Stimulating Hormone To Stimulate Multiple Corpora Lutea For Embryo Transfer In Beef Cattle, Bryan Carter Aug 2022

Incorporating Follicle Stimulating Hormone To Stimulate Multiple Corpora Lutea For Embryo Transfer In Beef Cattle, Bryan Carter

Theses and Dissertations

Assisted reproductive technologies, such as estrus synchronization and embryo transfer, can aid producers in improving genetics by increasing the number of progeny produced from elite females. The success of embryo transfer is dependent on a viable, competent embryo and a recipient with a receptive uterine environment. Follicular development and luteinization are pertinent for the recipient to establish a functional corpus luteum (CL) that can produce adequate concentrations of progesterone (P4) and provide a uterine environment conducive for the establishment of pregnancy. The objective of this study was to determine if exogenous follicle stimulating hormone (FSH), would increase the number of …


Novel Applications In Mississippi Cotton And Peanut, Anna Beth Gaudin Aug 2022

Novel Applications In Mississippi Cotton And Peanut, Anna Beth Gaudin

Theses and Dissertations

Studies were conducted in the field from 2020-2021 in peanut and cotton to optimize peanut growth and yield through prohexadione calcium application methods as well as weed control through increasing herbicide sites of action. These studies were established on multiple on-farm and small-plot locations in Mississippi. Prohexadione calcium studies concluded that following application of prohexadione calcium effects on yield and peanut growth were inconsistent. Neither varying application timing nor rate resulted in peanut yield that was different than when adhering to the label recommendations. Increasing sites of action studies concluded that broadleaf signalgrass and Amaranthus species control was optimized at …


The Effects Of Moderate And High Temperatures On Growth, Metabolism, And Blood-Oxygen Affinity In Ictalurus Spp., Brandon Gerhart Aug 2022

The Effects Of Moderate And High Temperatures On Growth, Metabolism, And Blood-Oxygen Affinity In Ictalurus Spp., Brandon Gerhart

Theses and Dissertations

Despite the growing use of hybrid catfish (Ictalurus furcatus × I. punctatus) in aquaculture, few studies have investigated the comparative effects of temperature on physiological performance with other cultured catfish. Therefore, growth, metabolism, and blood-oxygen affinity of blue (I. furcatus), channel (I. punctatus), and hybrid catfish were compared at moderate (23°C) and high (33°C) water temperatures. Channel catfish had the greatest growth and were in better condition compared to blue and hybrid catfish. Hybrid catfish standard metabolic rates did not differ from blue or channel catfish, while hybrid catfish had higher maximum metabolic rates, …


Improvement Value Of Forest Resources By Use Of Cottonseed Protein Meal As A Bio-Based Wood Adhesive For Hardwood Plywood Products, Edward David Entsminger Aug 2022

Improvement Value Of Forest Resources By Use Of Cottonseed Protein Meal As A Bio-Based Wood Adhesive For Hardwood Plywood Products, Edward David Entsminger

Theses and Dissertations

Literature shows that production of cottonseed adhesives is feasible to develop an environmentally friendly and competitive bio-based wood adhesive. Defatted cottonseed and water-washed cottonseed meals were prepared from glandless cottonseed and were used in adhesive formulations to produce three-ply yellow poplar (Liriodendron tulipifera) plywood panels as the first objective. These two cottonseed meals were compared with the properties of plywood panels made with an adhesive formulated from a commercial soybean meal, as a control. Adhesive resins were prepared from each protein meal with sodium metabisulfite (Na2S2O5) and one of two polyamido-amine-epichlorohydrin (PAE) wet strength agents, and the plywood panels were …


Effects Of Temperature On Growth, Metabolic Rate, And Lower Dissolved Oxygen Tolerance Of Speckled Peacock Bass Cichla Temensis, Manuel E. Coffill-Rivera Aug 2022

Effects Of Temperature On Growth, Metabolic Rate, And Lower Dissolved Oxygen Tolerance Of Speckled Peacock Bass Cichla Temensis, Manuel E. Coffill-Rivera

Theses and Dissertations

I examined the effects of temperature (25, 30, and 35°C) on growth, standard metabolic rate (SMR), and lower dissolved oxygen tolerance (LDOT) of juvenile Speckled Peacock Bass Cichla temensis. Fish were acclimated to 150-L aquaria for 7 weeks before the growth, SMR, and LDOT experiments. The growth study lasted 58 days and fish acclimated to 25 and 30°C displayed similar growth rates, while fish acclimated to 35°C had very poor growth rates. The SMR and LDOT experiments were performed using intermittent respirometers. Fish acclimated to 25°C had the lowest SMR, followed by 30°C, and finally 35°C. The highest LDOT …


Behavioral And Histological Inflammatory Analysis Of A Single, Mild Traumatic Brain Injury And Repeated Subconcussive Brain Injury Using A Rodent Model., Anna Marie Clay Aug 2022

Behavioral And Histological Inflammatory Analysis Of A Single, Mild Traumatic Brain Injury And Repeated Subconcussive Brain Injury Using A Rodent Model., Anna Marie Clay

Theses and Dissertations

Subconcussive (SC) impacts have become a growing concern within the neuroscience community regarding the immediate and long-lasting effects of sports-related injuries. While a single low-level impact, i.e., a subconcussion, may not cause cerebral perturbations, it has been increasingly recognized that repeated SC exposure can induce deleterious effects. Therefore, determining the lower limits of systematic perturbation resulting from multiple SC impacts is of critical importance in expanding our understanding of cerebral vulnerability and recovery. Currently, there is a lack of correlation between a mild traumatic brain injury (mTBI) and repeated SC impacts with respect to injury biomechanics. Moreover, the cumulative threshold …


Ex Vivo Biomechanical Evaluation Of A Novel Screw For Tibial Plateau Leveling Osteotomy, William Seth Kettleman Aug 2022

Ex Vivo Biomechanical Evaluation Of A Novel Screw For Tibial Plateau Leveling Osteotomy, William Seth Kettleman

Theses and Dissertations

Twelve pairs of cadaveric pelvic limbs were harvested from skeletally mature dogs. Tibias were randomly assigned pairwise to two study groups: locking buttress screw fixation (LBS) and bone-screw-fastener fixation (BSF). A tibial plateau leveling osteotomy (TPLO) was performed. Each specimen was positioned in a servohydraulic testing machine to simulate physiological orientation and loading at the mid-point of the stance phase at the walk. Cyclic loading was performed for 30,000 cycles at 4Hz with a peak-load of 1000N. The cyclic test was then continued by stepwise increasing the peak-load at a rate of 75N per 500 cycles until failure of the …


Application Of Organic Fertilizers For Lawn Establishment And Maintenance In Louisiana, Matthew Lambert Aug 2022

Application Of Organic Fertilizers For Lawn Establishment And Maintenance In Louisiana, Matthew Lambert

LSU Master's Theses

Landscape contractors are increasingly interested in organic products for Louisiana's residential and commercial turfgrass areas. However, the use, motivations, and barriers to adopting organic practices in the commercial turfgrass and landscape industry are undocumented. A survey with Louisiana Turfgrass Association (LTA) members to gauge their perceptions on current and future use of organic products in Louisiana was performed; and a field trial was conducted to evaluate organic fertilizers during turfgrass establishment. Substantial majorities of turfgrass professionals are currently applying organic fertilizers and believe organic product use will increase due to consumer demands, potential governmental regulation, and the belief that they …


A Pedagogy Of Play: How Pre- And In-Service Early Childhood Teachers’ Perceptions Of Play Are Influenced As A Result Of Practicum Experience In A Play-Based Environment, E. B. Nygard Aug 2022

A Pedagogy Of Play: How Pre- And In-Service Early Childhood Teachers’ Perceptions Of Play Are Influenced As A Result Of Practicum Experience In A Play-Based Environment, E. B. Nygard

Graduate Theses, Dissertations, and Capstones

There is a growing body of research behind the play-based movement in education today – a topic that is somewhat controversial (Nicolopoulou et al., 2010; Overstreet, 2018). While some are steeped in a more classical approach to early education, advocating learning should be painful (Adler & Van Doren, 1988), others are paving the way for a more progressive approach, suggesting play to be the premier window into a child’s development (Paley, 1979-2014; Wohlwend & Peppler, 2015). The purpose of this study was to look at how the perceptions of pre- and in-service teachers changed regarding play and storytelling after participating …


Utilization Of A Boosted Regression Tree Framework For Prediction Of Dissolved Phosphorus Concentrations Throughout The High Plains Aquifer Region, Jeffrey M. Temple Aug 2022

Utilization Of A Boosted Regression Tree Framework For Prediction Of Dissolved Phosphorus Concentrations Throughout The High Plains Aquifer Region, Jeffrey M. Temple

Theses and Dissertations

Groundwater-derived phosphorus has often been dismissed as a significant contributor towards surface water eutrophication, however, this dismissal is unwarranted, making the quantification of phosphorus concentrations in groundwater systems immensely important. Machine learning models have been employed to quantify the concentrations of various contaminants in groundwater, but to our best knowledge have never been used for the quantification of groundwater phosphorus. The goal of this research was to use a boosted regression tree framework to produce the first believed machine learning model of phosphorus variability in groundwater, with the High Plains aquifer serving as the study area. Results display a boosted …


Ruminations, Maria Barbara Ileana Kane Aug 2022

Ruminations, Maria Barbara Ileana Kane

Theses

Ruminations is an experimental exhibition which seeks to explore the integration of technology into traditional art. By combining traditional woodblock prints with augmented reality, Ruminations attempts to evoke empathy from the viewer regarding the topic of mental illness. Each AR experience illustrates, though imagery and animation, a different mental illness or psychological phenomenon. The viewer sees each experience separately over a printed background, expanding on the traditional frame and reaching into the world around us.


Novel 3d Bench Top Model For Vascular Calcification Research, Ursla-Marie K. Offiah Aug 2022

Novel 3d Bench Top Model For Vascular Calcification Research, Ursla-Marie K. Offiah

Theses and Dissertations

Cardiovascular disease is the leading cause of non-communicable disease in the whole world killing 17 million people in 2012. Among the many vascular diseases is vascular calcification (VC) which is the mineral build up in the walls of blood vessels. Medial calcification is the plaque buildup in the medial layer of the blood vesicle that is characterized by arterial stiffness and high blood pressure. Current calcification research involves two dimensional (2D) lab methods such as flat petri dishes to investigate the mechanism that causes and inhibits vascular calcification. Research has shown that the use of three-dimensional (3D) models can be …


Estimating Hand-Grip Forces Causing Cumulative Trauma Disorder, Purva P. Talegaonkar Aug 2022

Estimating Hand-Grip Forces Causing Cumulative Trauma Disorder, Purva P. Talegaonkar

Theses and Dissertations

Wearable sensors have garnered considerable interest because of their potential for various applications. However, much less has been studied about the Stretchsense pressure sensor characteristics and its workability for industrial application to prevent potential risk situations such as accidents and injuries. The proposed study helps investigate Stretchsense pressure sensors' applicability for measuring hand-handle interface forces under static and dynamic conditions. The BendLabs sensors - a multi-axis, soft, flexible sensing system was attached to the wrist to evaluate the wrist angle deviations. In addition, the StretchSense stretch sensors were attached to the elbow joint to help estimate the elbow flexion/extension. The …


Evaluating Non-Invasive Environmental Methods For Detecting Tropical African Pangolin Species To Inform Conservation Actions, Ichu Godwill Ichu Aug 2022

Evaluating Non-Invasive Environmental Methods For Detecting Tropical African Pangolin Species To Inform Conservation Actions, Ichu Godwill Ichu

Theses and Dissertations

Tropical African pangolin species are threatened throughout their range due to habitat loss and illegal take. Limited knowledge on distribution has rendered conservation efforts challenging. Methods commonly used for other wildlife species need to be tested for each pangolin species as each has variable ecologies requiring specific detection and monitoring techniques. This thesis evaluates the efficacy of two non-invasive environmental methods for detecting tropical African pangolin species, and consists of two complementary studies; a proof of concept study using soil sourced eDNA from a white-bellied pangolin enclosure in the Columbus Zoo, Ohio, to detect the species, and a field study …


Ex Vivo Biomechanical Comparison Of A Novel Compression Screw Fastener And Traditional Ao Cortical Bone Screw For Fixation Of A Simulated Slab Fracture In The Equine Third Carpal Bone, Allison Salinger Aug 2022

Ex Vivo Biomechanical Comparison Of A Novel Compression Screw Fastener And Traditional Ao Cortical Bone Screw For Fixation Of A Simulated Slab Fracture In The Equine Third Carpal Bone, Allison Salinger

Theses and Dissertations

Frontal plane slab fractures account for the majority of third carpal bone (C3) fractures in performance horses. Treatment is stabilization with an AO cortical screw. Complications are fragment splitting, fragment spinning, and irritation of dorsal soft tissue structures. A novel, headless, cannulated screw with interlocking threads (the Headless Compression Screw Fastener, HCSF) has been developed to resist multidirectional forces. Simulated C3 slab fractures were created in nine paired equine carpi. HCSF or AO cortical screws were loaded in shear to failure. Stiffness, maximum load to failure, and yield load was assessed in linear mixed models. No significant difference was detected …


The Employability Of State Ffa Degree Recipients In Alabama, Kailee D. Johnson Aug 2022

The Employability Of State Ffa Degree Recipients In Alabama, Kailee D. Johnson

Theses and Dissertations

Many high schools have shifted from comprehensive graduation exams to a focus on College and Career Readiness. A common method used to determine when a student is college and career ready is a Career Readiness Indicator (CRI). Many CRIs demonstrate a benchmark learning goal for students. Among academic-based CRIs are Career and Technical Education (CTE) industry credentials. Credentials are just one way that agriculture classrooms contribute to student success. This study compiled existing research on CRIs and employability skills in CTE students to determine how the State FFA Degree could potentially fit into this category as well as highlight specific …


Assessing The Usefulness Of The Livingroom Learning Gardens At Galloway Elementary School, Partnership Middle School, And Leland Park Middle School For Teaching, Benjamin Little Gunter Aug 2022

Assessing The Usefulness Of The Livingroom Learning Gardens At Galloway Elementary School, Partnership Middle School, And Leland Park Middle School For Teaching, Benjamin Little Gunter

Theses and Dissertations

As more schools incorporate learning gardens into their campuses to help educate school children on nutrition (Parmer and Stuempler, 2009), connect students to nature (Bucher, 2017), and grow healthy food; there is a need to better understand how the physical design and components of the garden facilitate the use and programming of the gardens for teaching. There is little research on how the physical characteristics of a garden influence those benefits and challenges. This study seeks to assess the usefulness of an intentionally designed garden typology that has been implemented at three different school sites. By documenting the differences between …


Sustainable Sidedress Nitrogen Applications For Early Corn And Cotton Crops Using Small Unmanned Aerial Systems, James Nolan Parker Aug 2022

Sustainable Sidedress Nitrogen Applications For Early Corn And Cotton Crops Using Small Unmanned Aerial Systems, James Nolan Parker

Theses and Dissertations

Nitrogen run-off from agriculture have been linked to human health problems on a global level. Large-scale conventional producers struggle to redefine themselves as sustainable because reducing nitrogen (N) inputs without justification or validation may lead to severe profit losses. Small unmanned aerial systems (sUAS) sensing may allow for decreased N runoff. Failure to address this problem will exacerbate already excessive N runoff into the Mississippi River and beyond. The purpose of this study was to reduce fertilizer N input using sUAS technology to assess crop canopy needs. In 2020 and 2021, variable rate nitrogen (VRN) side-dress N application maps were …


Determining The Effects Of Elevated Carbon Dioxide On Soil Acidification, Cation Depletion, And Soil Inorganic Carbon And Mapping Soil Carbons Using Artificial Intelligence, Jannatul Ferdush Aug 2022

Determining The Effects Of Elevated Carbon Dioxide On Soil Acidification, Cation Depletion, And Soil Inorganic Carbon And Mapping Soil Carbons Using Artificial Intelligence, Jannatul Ferdush

Theses and Dissertations

Soil carbon is the largest sink and source of the global carbon cycle and is disturbed by several natural, anthropogenic, and environmental factors. The global increase of atmospheric CO2 affects soil carbon cycling through varied biogeochemical processes. The first chapter is a compilation of current information on potential factors triggering soil acidification and weathering mechanisms under elevated CO2 and their consequences on soil inorganic carbon (SIC) pool and quality. Soil water content and precipitation were critical factors influencing elevated CO2 effects on the SIC pool. The second chapter examines a detailed column experiment in which six soils …