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Ecosystem Impacts And Space Use Of Double-Crested Cormorants In A Southeastern Reservoir System, Leah Lk Moran
Ecosystem Impacts And Space Use Of Double-Crested Cormorants In A Southeastern Reservoir System, Leah Lk Moran
Theses and Dissertations
Double-crested Cormorants are expanding their breeding range to historic wintering and migratory regions, such as Guntersville Reservoir in Alabama. This study lends insight into how cormorants breeding in a temperate ecosystem impact plants, trees, soil and bird communities as well as home range and movement of cormorants during the breeding season and whether they reside on this reservoir year-round. Results suggest that breeding cormorants have a negative impact on this ecosystem and do not move far from colony sites. Stable isotopes from cormorants and prey fish suggest that cormorants are migrating from this system after breeding, potentially to a marine …
Effects Of Dietary Supplementation Of L-Methionine Vs Dl-Methionine On Performance, Plasma Concentrations Of Free Amino Acids And Other Metabolites, And Myogenesis Gene Expression In Young Growing Pigs, Zhongyue Yang
Theses and Dissertations
This research was conducted to study the effects of supplemental L-Methionine (L-Met) and DL-Methionine (DL-Met) on nutrient metabolism, muscle gene expression, and growth performance of pigs. Twenty crossbred young barrows (initial Body Weight (BW) 21.2 ± 2.7 kg) were randomly assigned to 2 treatments. Crystalline L-Met and DL- Met were supplemented to the diets in Treatment 1 and 2 (both at 0.13%, ased basis), respectively. After 4 weeks of an ad libitum feeding trial, BW and feed intake were measured to calculate Average Daily Gain, Average Daily Feed Intake, and Gain: Feed. The blood samples were collected from the jugular …
Energetics Of Metal And Substrates Binding To The 2-His-1-Carboxylate Binding Motif In Nonheme Iron(Ii) Enzymes, Mingjie Li
Theses and Dissertations
Nonheme iron(II) oxygenases within a common 2-His-1-carboxylate binding motif catalyze a wide range of oxidation reactions involved in biological functions like DNA repair and secondary metabolic processes. The mechanism of O2 activation catalyzed by this enzyme family has been examined by spectroscopic, crystallographic, and computational studies, where it is clear the iron(II) center works with substrate, and cosubstrate to activate O2 by forming a highly oxidizing iron species (iron(IV)-oxo). From a thermodynamic perspective, substrate and/or co-substrate binding organizes the active site for O2 activation, and understanding the interactions among metal, substrate, cosubstrate, and enzyme provides insight into the intramolecular contacts …
Environmental Effects And Public Opinion Issues Associated With Incorporating Recycled Glass Cullet Into Beach Ecosystems Through Nourishment Projects, Claire Elizabeth Babineaux
Environmental Effects And Public Opinion Issues Associated With Incorporating Recycled Glass Cullet Into Beach Ecosystems Through Nourishment Projects, Claire Elizabeth Babineaux
Theses and Dissertations
Nourishing beaches and coastlines is a common practice in mitigating the effects of coastal erosion. Cullet, a geologically compatible aggregate, has been suggested for use in beach nourishment practices instead of dredged sands. The goal of this research is to assess the suitability of using of cullet to replace dredged sand as a nourishment aggregate and to educate the public about the potential uses for cullet as it relates to coastal erosion. The compatibility of cullet to natural quartz sand relies heavily on the comparison of physical characteristics of the grains and ecological compatibility, which compares the microorganisms that naturally …
Evaluating Population Dynamics, Movement, And Spawning Success Of Paddlefish Polyodon Spathula At Sam D. Hamilton Noxubee National Wildlife Refuge, Chelsea Rae Gilliland
Evaluating Population Dynamics, Movement, And Spawning Success Of Paddlefish Polyodon Spathula At Sam D. Hamilton Noxubee National Wildlife Refuge, Chelsea Rae Gilliland
Theses and Dissertations
An abundant Paddlefish Polyodon spathula population exists in a 0.8 ha pool below a water control structure at Sam D. Hamilton Noxubee National Wildlife Refuge, Mississippi. Managers were concerned that regulated flows from the structure were causing an ecological trap if Paddlefish were being attracted from the larger river downstream during the spawning period, but conditions were not suitable to facilitate reproduction. Between February 2016 to April 2018, 117 Paddlefish were identified and daily abundance was estimated between 18 and 75 fish. Telemetry study of 59 fish suggests a mixed population structure where some remain in the pool year-round and …
Using Photovoice To Derive The Shared Experiences Of Adolescents At A Camp For Autism Spectrum Disorder, Matthew Collier
Using Photovoice To Derive The Shared Experiences Of Adolescents At A Camp For Autism Spectrum Disorder, Matthew Collier
Theses and Dissertations
Autism spectrum disorder (ASD) is a disability characterized by social communication deficits, repetitive and restrictive behaviors, and language and communication deficits. Its prevalence among the general population has led to increased efforts to intervene effectively during childhood and adolescence. Prior quantitative and qualitative research suggests that camps are an effective setting to deliver social skills intervention for children with ASD; however, there are gaps in research that need to be addressed, such as a lack of empirical qualitative evidence, difficulty with language and communication issues inherent to ASD, and limited reliable studies involving the photovoice methodologies. The research questions designed …
Temperature Effect On Maize Germination And Root Elongation, Omar Nazhan Ali
Temperature Effect On Maize Germination And Root Elongation, Omar Nazhan Ali
Theses and Dissertations
Early planting is one technique to avoid or reduce heat and drought problems that negatively affecting grain crop production. If producers adopt early planting, cold temperatures may negatively affect corn yield. It is important to select hybrids that are suited for planting earlier in the southern United States. Experiments were conducted by imposing low temperatures during seed germination. Twenty commercially available corn hybrids were evaluated for seed germination and root elongation. The first objective was: 1) To determine if some hybrids germinate better at cooler temperatures than others; and 2) Determine variation in root elongation at cold temperatures among commercially …
The "Split Gaze" Of Refraction: Racial Passing In The Works Of Helen Oyeyemi And Zoë Wicomb, Allison Wiltshire
The "Split Gaze" Of Refraction: Racial Passing In The Works Of Helen Oyeyemi And Zoë Wicomb, Allison Wiltshire
Theses and Dissertations
In this thesis, I expand considerations of diaspora as not only a migration of people and cultures but a migration of thought. Specifically, I demonstrate that literary representations of diaspora produce what I consider to be an epistemological migration, challenging the idea that race and culture are stable and impermeable and offering instead racial and cultural fluidity. I assert that this causal relationship is best exemplified by narratives of racial passing written by diasporic writers. Using Homi Bhabha’s concepts of mimicry, hybridity, and ambivalence, I analyze Helen Oyeyemi’s Boy, Snow, Bird and Zoë Wicomb’s Playing in the Light, arguing that …
In Situ Induction Heating Of Electrodes And Applications, Mohammad Azizur Rahman
In Situ Induction Heating Of Electrodes And Applications, Mohammad Azizur Rahman
Theses and Dissertations
This thesis describes the fabrication of an induction heating apparatus and its use to directly heat small platinum and gold electrodes in electrolyte solution. The heating characteristics of the electrodes were studied via the entropic shift of redox potential with temperature and change in Faradaic current. Temperature pulse voltammetry (TPV) and cyclic voltammetry were used for temperature calibration under various heating conditions. The maximum temperature reached at a 0.25 mm diam platinum electrode surface in solution was 84 degrees C. At heated electrodes an increase in current was found to be due to convection and diffusion. TPV was performed with …
Investigating The Influence Of Herd Behavior On Protection Motivation: A Multi-Stage Experiment, Ali Vedadi
Investigating The Influence Of Herd Behavior On Protection Motivation: A Multi-Stage Experiment, Ali Vedadi
Theses and Dissertations
IT users often make security-related decisions in complex and multidimensional environments. Over-reliance on current behavioral security theories (e.g. Protection Motivation Theory) that do not account for such circumstances can seriously limit researchers’ ability to comprehend such decision making. In this regard, herd behavior theory explains that when individuals make decisions in uncertain circumstances, they may observe what other people are doing, discount their own limited information and imitate others (also known as social learning). Explaining protection motivation behavior from a different theoretical perspective (i.e. herd behavior) is one of the primary contributions of this study. Investigating whether protection motivation behaviors …
Investigation Of Antimicrobial Peptide Genes In Maize (Zea Mays) Inbred Lines Resistant To Lepidoptera Larvae Feeding And Fungus Infection, Joseph Ali Noonan
Investigation Of Antimicrobial Peptide Genes In Maize (Zea Mays) Inbred Lines Resistant To Lepidoptera Larvae Feeding And Fungus Infection, Joseph Ali Noonan
Theses and Dissertations
Present throughout all classes of life, antimicrobial peptides (AMPs) confer defense against bacteria, viruses, fungi, and insects. Identifying maize AMPs would provide breeders with a new defense resource. Here, the investigation of maize AMPs is reported. The distribution of AMPs within a panel of ten Mississippi maize inbred lines with varying resistance to Lepidoptera larvae feeding and Aspergillus infection is explored to characterize their observed resistances. Homology data-mining with two comprehensive AMP databases revealed 88 unique maize AMP protein sequences across 81 genes in the MaizeGDB B73 genome assembly. AMP-related polymorphic sites were identified using genomic primers. Analyses with qRT-PCR …
Mapping Potential Butterfly Weed (Asclepias Tuberosa) Habitat In Mississippi Using Geographical Information Systems (Gis), Emma Rose Neigel
Mapping Potential Butterfly Weed (Asclepias Tuberosa) Habitat In Mississippi Using Geographical Information Systems (Gis), Emma Rose Neigel
Theses and Dissertations
Butterfly weed (Asclepias tuberosa) is a primary larval food source for the monarch butterfly (Danaus plexippus). Planting more butterfly weed may stimulate declining monarch populations. To that end, a habitat suitability map was created for Mississippi in GIS using soil pH, soil texture, and land cover. Herbarium data were derived from the Southeast Regional Network of Expertise and Collections (SERNEC) database. Environmental data were from the USDA National Resource Conservation Service geospatial data gateway. Frequency analysis was used to assign scores to environmental variables of SERNEC occurrences using a suitability index. Global positioning systems (GPS) locations of butterfly weed were …
Fusion For Object Detection, Pan Wei
Fusion For Object Detection, Pan Wei
Theses and Dissertations
In a three-dimensional world, for perception of the objects around us, we not only wish to classify them, but also know where these objects are. The task of object detection combines both classification and localization. In addition to predicting the object category, we also predict where the object is from sensor data. As it is not known ahead of time how many objects that we have interest in are in the sensor data and where are they, the output size of object detection may change, which makes the object detection problem difficult. In this dissertation, I focus on the task …
Her Milkshake Brings Out The Girls In Amman: Examining Questions About Sexual Desire And Societal Influences Among Same-Sex Desiring Women In Jordan, Caitlin Marlena Ostrowski
Her Milkshake Brings Out The Girls In Amman: Examining Questions About Sexual Desire And Societal Influences Among Same-Sex Desiring Women In Jordan, Caitlin Marlena Ostrowski
Theses and Dissertations
In the Middle East and in many majority Muslim nations, homosexuality, including homosexual acts, identities, desires, and discussions of those, is considered taboo. Utilizing a feminist theoretical orientation, this project examined the ways in which same-sex desiring women in Amman, Jordan view the concept of sexually desiring and its relationship to identities. It also examined the pressures placed on them to abide by and navigate familial and religious expectations that conflict with their sexuality. This project drew upon 15 interviews from Muslim and Christian women in Amman using semi-structured and unstructured interviews and participant observation. After analysis, it was concluded …
Evaluation Of Herbicide Tolerance And Interference Potential Among Weedy Rice Germplasm, Swati Shrestha
Evaluation Of Herbicide Tolerance And Interference Potential Among Weedy Rice Germplasm, Swati Shrestha
Theses and Dissertations
Weedy red rice is conspecific weed of rice, identified as a threat to global rice production. As weedy rice is more tolerant to stresses than cultivated rice and has wide genetic and morphological variation we hypothesized that weedy rice has high herbicide tolerance and weed suppressive potential. Herbicide tolerance and weed suppressive potential of 54 weedy rice accessions were evaluated and the traits were associated with molecular markers. Accessions B2, B20 and S11 showed high tolerance to glyphosate and B49, B51 and S59 had high tolerance to flumioxazin. All the accessions were controlled 100% with 1311g a.i/ha (1.5x) rate of …
Molecular Interactions Between Pvt1 Transcripts And C-Myc, Onayemi Titilayo Onagoruwa
Molecular Interactions Between Pvt1 Transcripts And C-Myc, Onayemi Titilayo Onagoruwa
Theses and Dissertations
This study focused on the molecular relationships between PVT1 exons 4A, 4B, 9 and c-Myc in prostate cancer. Data showed significant regulatory interactions between these exons and c-Myc which is strongest between PVT1 exon 9 and c-Myc. This will likely have implications for PCa where PVT1 and c-Myc are dysregulated.
Allomaternal Care By Conspecifics Impacts Activity Budgets Of Colobus Guereza Mothers, Dominique L. Raboin
Allomaternal Care By Conspecifics Impacts Activity Budgets Of Colobus Guereza Mothers, Dominique L. Raboin
Theses and Dissertations
In primate societies, caring for infants involves nursing, protection, provisioning, and carrying - all energetically taxing states for mothers. The cost of holding and carrying clinging infants often constrains mothers from moving and traveling, potentially reducing their food and energy intake. Alternatively, when an infant is physically separated from their mother they are at risk of predation from birds of prey or other large mammals. This requires a high level of vigilance from mothers, often further deterring them from acquiring the food and energy that they need. Allomaternal care (AMC) is hypothesized to provide mothers with a way to safely …
Creating Herstory: Female Rebellion In Arundhati Roy’S "The God Of Small Things" And "The Ministry Of Utmost Happiness", Priyanka Tewari
Creating Herstory: Female Rebellion In Arundhati Roy’S "The God Of Small Things" And "The Ministry Of Utmost Happiness", Priyanka Tewari
Theses and Dissertations
In The God of Small Things and The Ministry of Utmost Happiness novels, the author Arundhati Roy is not only attempting to give feminist weight to the multiplicity of locations in which gender is articulated by recasting her female characters in their quest for selfhood, she is also focusing on women and women-identified characters as agents of history, thereby contributing to an ongoing project of feminist historiography.
An Investigation Of Vocal Learning Propensity In Zebra Finch (Taeniopygia Guttata), Tatsuya Hayashi
An Investigation Of Vocal Learning Propensity In Zebra Finch (Taeniopygia Guttata), Tatsuya Hayashi
Theses and Dissertations
The investigator attempted to predict the vocal learning propensity from either family pedigree or early vocal babbling (subsong). Pedigree trees suggest the possibility that vocal learning ability may depend on family. We failed to predict vocal learning propensity from subsong, but suggested that subsong may influence vocal learning outcome.
Efficacy Of Eluted Antibiotics In 3d Printed Orthopaedic Implants, Mohammed Mehdi Benmassaoud
Efficacy Of Eluted Antibiotics In 3d Printed Orthopaedic Implants, Mohammed Mehdi Benmassaoud
Theses and Dissertations
Costs associated with musculoskeletal diseases in the United States account for 5.7 % of the Gross Domestic Product (GDP) [1]. As such, there is a need to pursue new ideas in orthopaedic implants that can decrease cost and improve patient care. In the recent years, 3D printing using Fused Deposition Modeling (FDM) or Stereolithography (SLA) has opened several exciting possibilities to create orthopaedic implants. Such implants can be engineered to release antibiotics in a controlled manner either by infusing the drug into the material during manufacturing or by using built-in design features such as micro-channels and reservoirs [2]. The use …
Development Of A Subsurface Landfill Fire Risk-Index, Samain Sabrin
Development Of A Subsurface Landfill Fire Risk-Index, Samain Sabrin
Theses and Dissertations
Landfill subsurface fires create environmental hazards by emitting potentially dangerous particulates into the atmosphere and damaging liners, potentially contaminating surrounding soil and groundwater aquifers with leachate. Currently, the only means of detecting underground fires are physical tests. This paper is used to describe an index that can be employed to track fire risk across a landfill. The landfill parameters analyzed for fire risk susceptibility in Chapter 1 include residual nitrogen concentration, oxygen exceedance, methane concentration, carbon monoxide level, methane and carbon dioxide ratio and monitoring well temperature. Incorporating these factors, a landfill fire index ranging from 1 to 10 was …
An Ecological And Distributional Analysis Of Great Basin Bristlecone Pine (Pinus Longaeva), Gregory Watson Taylor
An Ecological And Distributional Analysis Of Great Basin Bristlecone Pine (Pinus Longaeva), Gregory Watson Taylor
Theses and Dissertations
Understanding the impacts of climate change is critical for improving the conservation and management of ecosystems worldwide. Ecosystems vary along a precipitation and temperature gradient, ranging from tropical jungles to arid deserts. The Great Basin is a semi-arid eco-region that is found within the western United States. Plant communities within the Great Basin range from sagebrush valleys to sub-alpine conifer forests found at high elevation areas. It is predicted that the Great Basin will experience prolonged periods of drought, more intense fires, and greater variability in average annual and monthly precipitation, all in response to changes in climate patterns. At …
Video Prompting Delivered Via Augmented Reality To Teach Transition-Related Math Skills To Adults With Intellectual Disabilities, Giulia Cacciatore
Video Prompting Delivered Via Augmented Reality To Teach Transition-Related Math Skills To Adults With Intellectual Disabilities, Giulia Cacciatore
Theses and Dissertations
The purpose of this study was to determine the effectiveness of a video-based instruction packet as a method of teaching math-based vocational skills delivered through augmented reality to three adults with intellectual disabilities. The dependent variable was the percentage of steps performed correctly to solve each selected type of math problem. The independent variable was the video-based math intervention delivered via augmented reality, which modeled the individual steps for solving three different multi-step math problems: (1) adjusting a recipe to serve a different number of people, (2) calculation of salary, (3) calculation of unit prices. Visual and statistical analysis demonstrated …
Exploration Of Antimicrobial Activity In Natural Peptides And High-Throughput Discovery Of Synthetic Peptides, Emma Kay Dallon
Exploration Of Antimicrobial Activity In Natural Peptides And High-Throughput Discovery Of Synthetic Peptides, Emma Kay Dallon
Theses and Dissertations
Despite many medical advances, antibiotic resistant bacteria increasingly plague the modern world, necessitating discovery of new antibiotics. One area of nature that can provide inspiration for antibiotics is antimicrobial peptides. Many of these peptides exist in nature, with some classes that have not been studied or characterized well. One such class is the defensin-like peptides generated by the plant Medicago truncatula as part of their symbiotic relationship with Sinorhizobium meliloti. Nodule-specific Cysteine Rich (NCR) peptides are defined by the presence of multiple cysteines, and regulate the growth of S. meliloti within plant cells. While some of these NCR peptides have …
Species Delimitation Predictions Using Mitochondrial And Nuclear Dna Sequences From The Heteromys Pictus-Spectabilis Species Complex, Joanna Rosa Bateman
Species Delimitation Predictions Using Mitochondrial And Nuclear Dna Sequences From The Heteromys Pictus-Spectabilis Species Complex, Joanna Rosa Bateman
Theses and Dissertations
Heteromys pictus-spectabilis is a species complex within the subfamily Heteromyinae (Family: Heteromyidae) that is distributed along the western and southern Mexican coast and surrounding environments. Currently, the species complex is accepted as being 2 separate species (H. pictus and H. spectabilis), but this also renders H. pictus paraphyletic. Therefore, the species complex requires re-evaluation in order to resolve the paraphyly. Mitochondrial DNA sequences from a previously existing ~720 specimen database compiled by Victoria Vance were used in conjunction with new nuclear DNA sequences sequenced for the purpose of this study to generate multiple phylogenetic trees via the software programs RAxML, …
The Responses Of Ants And Other Invertebrates To Fire And Rodent Activity In North American Deserts, Joshua David Day
The Responses Of Ants And Other Invertebrates To Fire And Rodent Activity In North American Deserts, Joshua David Day
Theses and Dissertations
Human activities are increasing the size, frequency and severity of disturbance across earth’s ecosystems including deserts. Exotic annual grasses have altered fire regimes by increasing the size, frequency, and severity of fires in these systems. Invertebrates make up a large proportion of ecosystem diversity, provide a wide range of ecosystem functions, and are good indicators of ecosystem function and resilience. Ants are particularly good indicators of ecosystem stability. The ability of rodents to modify plant community structure post-fire, could result in rodent communities having important indirect effects on invertebrate communities. In chapter 1 we report changes in ant forager abundance …
Fluorescent Labeling Of Antibiotic Resistant Bacteria Model Dna, Janice Darko
Fluorescent Labeling Of Antibiotic Resistant Bacteria Model Dna, Janice Darko
Theses and Dissertations
Global threats to treatment of bacterial infections due to antibiotic resistance (AR) have been on the rise in recent years. Current diagnostic tests identify bacteria by using blood culture, which takes more than 24 hours. This study focuses on the fluorescent labeling of DNA derived from bacterial AR genes (KPC & VIM) and other model DNAs using oligreen dye (OG) and molecular beacons (MB). A NanoDrop 3300 fluorospectrometer was used to take fluorescence measurements. Linear dynamic range and labeling efficiency were dependent on the following optimized conditions: dilution factor of OG (200 fold), buffer (20 mM Tris HCl, pH 8), …
The Effects Of Ice And Tens Combination Treatment On Knee And Hip Joint Neuromechanics In Individuals With Experimentally Induced Knee Pain During Running, Sunku Kwon
Theses and Dissertations
Context: Knee injury is a common problem for runners. Knee pain is a common symptom in knee injury and is associated with alterations in knee and hip muscle activation and hip joint angles. Relieving pain through intervention may help to restore neuromuscular function. Objective: To examine the effects of ice and transcutaneous electrical nerve stimulation (TENS) combination treatment on perceived knee pain, hip frontal plane angle, and muscle activation during running in individuals with experimental knee pain (EKP). Design: Crossover. Setting: Laboratory. Subjects: 19 participants (11 males and 8 females, 23.2 ± 1.9 y, 176 …
Composition Of The Community Of Small Mammals In The Great Basin Desert, Samantha Elizabeth Phillips
Composition Of The Community Of Small Mammals In The Great Basin Desert, Samantha Elizabeth Phillips
Theses and Dissertations
Small mammals are a keystone guild in arid ecosystems; often exhibiting top-down control of the diversity and structure of plant communities. However, changing climate, shifting fire regimes, and the invasion of exotic plants are modifying the structure of arid systems. Environmental changes in these arid systems are likely altering small mammal communities, and therefore, their ecological role. We examined two aspects of the community composition of small mammals in the Great Basin: changes in community composition since large scale sampling of the region began in 1930, and the current population of a sensitive species of small mammal, the dark kangaroo …
Neuroimmune-Mediated Alcohol Effects On Ventral Tegmental Area Microglia And Infiltrating Leukocytes, Travis Jonathan Clarke
Neuroimmune-Mediated Alcohol Effects On Ventral Tegmental Area Microglia And Infiltrating Leukocytes, Travis Jonathan Clarke
Theses and Dissertations
Microglia are the primary immune cell in the central nervous system and are known as the “resident” macrophages in the central nervous system (CNS). While microglia are classically known as the immune cells of the CNS, their role has more recently been shown to extend far beyond immunity. The effects of ethanol on the brain are closely linked to neuroimmune responses mediated by microglia that are present in the healthy brain from the time of development. Though microglia have been classified as the “resident” immune cells of the CNS, new research suggests that other immune cells may be implicated in …