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Articles 2191 - 2220 of 8968
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Ecological Factors Associated With Habitat Use Of Baird’S Tapirs (Tapirus Bairdii), Victoria Diane Monette
Ecological Factors Associated With Habitat Use Of Baird’S Tapirs (Tapirus Bairdii), Victoria Diane Monette
Electronic Theses and Dissertations
The Baird’s tapir, the largest terrestrial mammal in Central America and a crucial seed disperser and ecosystem engineer, has experienced a 50% loss of habitat in its geographic range during the past 30 years. Efforts to conserve this species need to consider factors that have contributed to its endangerment, such as how human presence and human-mediated habitat change may influence tapir behavior, body condition, and disease susceptibility. In this thesis I had two goals: 1) understand how human disturbance affects tapir activity patterns, and 2) noninvasively determine the association of disturbance with tapir health. I first compared the activity patterns …
Formulation Strategies To Address Physiological And Anatomical Constraints For Improved Topical Ocular Drug Delivery, Karthik Yadav Janga
Formulation Strategies To Address Physiological And Anatomical Constraints For Improved Topical Ocular Drug Delivery, Karthik Yadav Janga
Electronic Theses and Dissertations
Delivery of therapeutic molecules to the eye has been a complicated task owing to its anatomical and physiological barriers. This dissertation delineates several formulation strategies to circumvent dynamic and static constraints hampering the ocular drug delivery. Advanced vesicular systems, bilosomes and transfersomes, were prepared to improve the ocular pharmacotherapy of natamycin (NT). NT bilosomes and transfersomes were further loaded into in situ gel systems which transformed immediately to hydrogel, in the simulated tear fluid, with good viscoelastic and mucoadhesive properties.In vitro corneal transport studies confirmed the superior permeability characteristics of NT from the optimized bilosome and transfersome in situ gel …
Rambling Blues: Mapping Contemporary North American Blues Literature, Josh-Wade Ferguson
Rambling Blues: Mapping Contemporary North American Blues Literature, Josh-Wade Ferguson
Electronic Theses and Dissertations
“Rambling Blues: Mapping Contemporary North American Blues Literature” revises the methodological assumptions that have underwritten our understanding of blues literature and the politics of race and region that surround it. Where previous commentators have defined blues literature primarily through its formal and thematic connections with blues music and with the sociohistorical contours of black southern life more generally this dissertation expands the boundaries of how we conceive blues literature by examining Langston Hughes’ poems “The Weary Blues” (1925) and “Po Boy Blues” (1926) August Wilson’s Ma Rainey’s Black Bottom (1984) Jesmyn Ward’s Salvage the Bones (2011) James Hannaham’s Delicious Foods …
Decolonial Resistance In Latinx Writings From Peru To The United States: A Portfolio, Isabel Norwood
Decolonial Resistance In Latinx Writings From Peru To The United States: A Portfolio, Isabel Norwood
Electronic Theses and Dissertations
This collection begins with the premise that colonial relationships manifest in ways beyond exploitation of one nation by another. It relies on the decolonial theory of Walter D. Mignolo in its assumption that imbalances of power in the realms of race gender sexuality and class are fundamentally colonial. With this more expansive understanding of coloniality in mind I examine resistance to colonial exploitation in a range of texts from across the Americas. The first essay in this collection explores the role of the guinea pig in Andean food culture arguing that the continued consumption of guinea pig represents a form …
Subverting The Patriarchal Panopticon: Challenges To Eugenics Rhetoric In The Novels Of Mccullers And Welty, Regina Marie Young
Subverting The Patriarchal Panopticon: Challenges To Eugenics Rhetoric In The Novels Of Mccullers And Welty, Regina Marie Young
Electronic Theses and Dissertations
My thesis takes into consideration the scope of eugenics ideologies and their influence on literature specifically two mid-twentieth century authors from the U.S. South Carson McCullers and Eudora Welty. I contend that both writers engage with eugenics rhetoric challenging and subverting the prevailing ideology of the day albeit in differing ways. McCullers and Welty address different facets of eugenics rhetoric in their novels— namely the nature of “defect” and the criteria for “fitness” for “citizenship.” This thesis interrogates the ways in which these writers develop rhetorical strategies for resisting eugenics ideologies in their respective novels Reflections in a Golden Eye …
Diversification In The Neotropics – Evolution And Population Genetics Of The Armored Catfish Hypancistrus Sp. From The Xingu River, Marcella Goncalves Santos
Diversification In The Neotropics – Evolution And Population Genetics Of The Armored Catfish Hypancistrus Sp. From The Xingu River, Marcella Goncalves Santos
Electronic Theses and Dissertations
The Xingu River, one of the largest tributaries of the Amazon River, is currently in peril due to the recent construction of hydroelectric dams, but little is known about the numerous fish species it supports. This dissertation focuses on three pleco catfish species belonging to the genus Hypancistrus from the Xingu River with partially overlapping distributions: H. zebra, H. sp. (L174), and H. sp. (L66/333). Chapter 1 is a bibliographic review of Amazonian freshwater fish diversity, with the goal of discussing the hypotheses of speciation mechanisms that can be tested in this system, including the relative importance of ecological adaptation …
Implementing Mass Spectrometry For The Structural And Compositional Analysis Of Proteins, Mohammad Riaz
Implementing Mass Spectrometry For The Structural And Compositional Analysis Of Proteins, Mohammad Riaz
Electronic Theses and Dissertations
Lectins are sugar-binding proteins that perform various biological functions such as cellular recognition attachments etc. Pulses the dried edible seeds of certain plants are great sources of lectins and a proteomics approach directed at lectins identification would bring substantial improvement in the lectin identification process. Lectins from nine different plant species were analyzed through SDS-PAGE and proteomics analysis. After LC-MS/MS analysis proteins were identified with protein database searches using Uniprot. Functionally uncharacterized proteins were identified with database searches were annotated with the Pfam and NCBI-CCD databases. In-vitro pharmacological screening will be carried out to assess the pharmacological effects of these …
The Long And Short Of It, Ciera Mcelroy
The Long And Short Of It, Ciera Mcelroy
Electronic Theses and Dissertations
The Long and Short of It is a collection of ten stories, spanning centuries and continents, illustrating the universality of loss. Here is a war-haunted Korean vet, brainwashed Nazi brides, a neurotic Soviet ballerina, and a re-imagined Ethan Frome. In these stories, anxiety waits in the wings: will Ethan's wife discover his affair? Will the brides acknowledge the dark truth behind their training? Will a mother recover her kidnapped baby? Characters grapple with grief and anxiety in various ways. Two mothers mourn missing babies: one turns to the occult, the other heads to Mars. Children reel with abandonment: one obsesses …
Raising Roma Voices: An Insider Examination Of American Roma Realities, Resistance, And Revaluation, Sabrina Marks
Raising Roma Voices: An Insider Examination Of American Roma Realities, Resistance, And Revaluation, Sabrina Marks
Electronic Theses and Dissertations
A vast scholarship has been dedicated to examining the discrimination racial and ethnic minorities endure in the United States. Research has also shown racial and ethnic minorities work to resist discrimination via various social processes. One ethnic minority group absent from the literature is the American Roma, more commonly known as Gypsies. Therefore, this study aimed to gain insights into the situation of the American Roma, including the discrimination they endure and the resistance tactics they employ. In-depth semi-structured interviews were conducted with 31 native-born American Roma adults during the course of this insider study. Participants reported experiencing discrimination in …
The Ecology Of Central Florida's Thief Ants (Hymenoptera: Formicidae: Solenopsis), Leo Ohyama
The Ecology Of Central Florida's Thief Ants (Hymenoptera: Formicidae: Solenopsis), Leo Ohyama
Electronic Theses and Dissertations
Thief ants of the genus Solenopsis are a diverse group of ants that are found in ant communities throughout the world. They have long been purported to practice lestobiosis, an interaction between small and larger-bodied ants, where small ants cryptically tunnel into larger-bodied ant nests within the subterranean environment and steal brood or eggs for consumption. Thief ants are extremely small, measuring 1-2 mm in length and many of the species within this group practice a subterranean life history, where they live the entirety of their lives exclusively belowground. Due to these key characteristics, the ecology and natural history of …
A Kinetic Monte Carlo Study Of Mesoscopic Perovskite Solar Cell Performance Behavior, Behzad Bahrami
A Kinetic Monte Carlo Study Of Mesoscopic Perovskite Solar Cell Performance Behavior, Behzad Bahrami
Electronic Theses and Dissertations
Perovskite solar cells have received considerable attention in recent years due to their low processing cost and high energy conversion efficiency. However, the mechanisms of perovskite solar cell performance are not fully understood. Models based on probabilistic and statistical approaches can be used to simulate, optimize, and predict perovskite solar cell photovoltaic performance, and they can also guide experimental processing and fabrication conditions to achieve higher photovoltaic efficiency. This work developed a 3D model based on the kinetic Monte Carlo (KMC) approach to simulate 3D morphology of perovskite-based solar cells and predict their photovoltaic performance. The model incorporated the physical …
Variability Of E. Coli In Streambed Sediments And Its Implication For Water Quality, Sadia Salam
Variability Of E. Coli In Streambed Sediments And Its Implication For Water Quality, Sadia Salam
Electronic Theses and Dissertations
Fecal indicator bacteria (FIB), including E. coli, are the number one cause of water quality impairments in the United States according to the USEPA. FIB are used as a predictor to identify the possible presence of pathogens in waterbodies. E. coli is a useful indicator of gastrointestinal (GI) related illnesses from contact with fresh water. While surface water is routinely monitored for water quality, streambed sediments are rarely considered as a source of FIB to the overlying water column. This study focuses on understanding the variation of E. coli concentrations in streambed sediments and the potential impact of sediment sources …
A Bioinfomatic Analysis Of Luminal And Mucosal Ileal Bacteria Colonizing Nursery Pigs Fed Different Protein Sources, Jamie L. Ortman
A Bioinfomatic Analysis Of Luminal And Mucosal Ileal Bacteria Colonizing Nursery Pigs Fed Different Protein Sources, Jamie L. Ortman
Electronic Theses and Dissertations
Weaning is a critical time in a young pig’s life that will greatly impact its adult growth and development. The objective of this research was to evaluate the effects of various protein sources on the bacterial composition within luminal and mucosal populations in simple and complex diets to gain a better understanding of factors influencing gut health. Weaned pigs were fed 1 of 3 simple experimental diets: 1) basic diet containing corn and soybean meal (Negative Control - NEG), 2) basic diet + fishmeal (FM; Positive Control - POS), and 3) basic diet + microbially-enhanced soybean meal (MSBM). Phase I …
Investigating The Late Woodland Climate Of Old Tampa Bay, Florida, Jaime Rogers
Investigating The Late Woodland Climate Of Old Tampa Bay, Florida, Jaime Rogers
Electronic Theses and Dissertations
Tampa Bay and the broader Central Gulf Coast region of Florida bear evidence of site reduction and population decline during the onset of the Late Woodland period (AD 500-1000). Concomitantly, Weeden Island culture flourished to the north, while climatic instability loomed to the south. It is unclear if the site abandonments in the area between the two are related to social or cultural change, an unstable climate, or a combination thereof. Interdisciplinary research has provided evidence for climate change and sea level regression during the sixth and seventh centuries in Southwest Florida, but these variables have yet to be investigated …
Business In The Estuary, Party In The Sea: Migration Patterns Of Striped Mullet (Mugil Cephalus) Within The Indian River Lagoon Complex, Olivia Myers
Electronic Theses and Dissertations
Commercial and recreational environmental enterprises in the Indian River Lagoon (IRL), Florida supply nearly 10,000 jobs and produce $1.6 billion dollars a year in revenue. These waters contain iconic species of sportfish, including red drum, snook, and sea trout, as well as their lower trophic level prey such as snapper and mullet. Striped mullet (Mugil cephalus) are both commercially valuable as well as an indicator species for overall ecosystem health. From September to December, mullet in the IRL undergo an annual migration from their inshore foraging habitats to oceanic spawning sites. However, their actual migratory pathways remain unknown. To address …
Hydrodynamic Limitations And The Effects Of Living Shoreline Stabilization On Mangrove Recruitment Along Florida Coastlines, Christian Pilato
Hydrodynamic Limitations And The Effects Of Living Shoreline Stabilization On Mangrove Recruitment Along Florida Coastlines, Christian Pilato
Electronic Theses and Dissertations
The recruitment success of mangroves is influenced by a variety of factors, including propagule availability, desiccation, herbivory, and hydraulic habitat limitations. Hydrodynamic forces (waves and currents) act as obstacles to mangrove recruitment, restricting the successful colonization of mangrove species. We evaluated the biological and physical limitations to mangrove recruitment through monthly shoreline surveys and lateral pull-tests. Surveys followed mangroves from propagule release through recruitment along the shorelines of De Soto National Memorial (Bradenton, FL), capturing differences in propagule availability and recruitment along natural areas and across differing forms of shoreline stabilization ("living shorelines" and revetments). Propagule densities were highest along …
Analyzing Pre-Inhumation Breakage Ceramics At Lamanai, Belize: A Conjunctive Approach, Ryan Enger
Analyzing Pre-Inhumation Breakage Ceramics At Lamanai, Belize: A Conjunctive Approach, Ryan Enger
Electronic Theses and Dissertations
During the Terminal Classic period (9th-10th centuries A.D.), the ancient Maya at Lamanai, Belize, began to practice pre-inhumation breakage of ceramics in mortuary contexts. Previously, the custom had been to bury whole vessels with the deceased. This conspicuous shift in behavior suggests important changes in beliefs regarding the role of ceramics in death and interment at a pivotal moment in ancient Maya culture history. Despite this significant change, there has been no published research conducted specifically on these vessels. In fact, there has been no clearly delineated set of characteristics for what qualifies as a pre-inhumation breakage vessel (PBV). This …
Mirrors As Portals: Images Of Mirrors On Ancient Maya Ceramics, Julie Rogers
Mirrors As Portals: Images Of Mirrors On Ancient Maya Ceramics, Julie Rogers
Electronic Theses and Dissertations
The Maya believed there were multiple worlds in addition to the human world. Portals connected these worlds and allowed active engagement between the Maya and their gods. Without portals and the ability to communicate between the worlds the Maya belief system could not function. Evidence suggests the Maya believed reflective surfaces – mirrors and water surfaces – were portals to spiritual worlds. In this thesis, I examine the portrayal of mirrors as portals in Maya art, focusing on mirrors in scenes painted on ceramics. Combining archaeological, iconographical, and linguistic data I argue that mirrors functioned in service to ritual as …
Fear And Loathing In The Super Organism: Foraging Strategy Doesn't Change Forager Response In A Landscape Of Fear., Philip Schadegg
Fear And Loathing In The Super Organism: Foraging Strategy Doesn't Change Forager Response In A Landscape Of Fear., Philip Schadegg
Electronic Theses and Dissertations
Understanding how predators impact keystone species, like ants, is very important for our understanding of ecology because of ants' importance in shaping community dynamics and ecosystem functions. In this thesis I present research investigating the role of the ant-specialized spider Anasaitis canosa in influencing the foraging behavior of four ant species (Formica pallidefulva, Odontomachus ruginodis, Pheidole obscurithorax & Solenopsis invicta). Collectively, these four species use foraging strategies exhibited by most ants. I conducted two experiments to quantify the impacts of spider predation on ant prey. The first used forty colonies of four ant species to investigate how A. canosa changed …
Acoustic Ecology And Sound Mapping The University Of Central Florida Main Campus, Robert Clarke
Acoustic Ecology And Sound Mapping The University Of Central Florida Main Campus, Robert Clarke
Electronic Theses and Dissertations
"Acoustic Ecology and Sound Mapping the University of Central Florida Main Campus" explores the intersection of place and space, sound studies and acoustic ecology, visualization, and archives. The end result consists of a collection of "soundwalk" and stationary recordings conducted from 2016-2019 at the University of Central Florida (UCF) main campus in Orlando presented as an online Sound Map. This archive previously did not exist and provides a snapshot of the various sounds heard throughout the campus as well as a starting point and context for future research into this still-emerging field of acoustic ecology and sound studies. While the …
Discovering Latent Gender Bias In Children's Stem Literature, Christine Herlihy
Discovering Latent Gender Bias In Children's Stem Literature, Christine Herlihy
Electronic Theses and Dissertations
A mixed method, exploratory, sequential research design was conducted to investigate the presence of latent bias in early childhood STEM literature content, applying a non-biased, sociocultural, STEM identity, theoretical framework. A survey of children's perceptions of gender and a content analysis found unintentional bias. Exploratory findings confirmed 102 children were gendering images. An examination of the relationship between the participants' gender and how the participant gendered AND preferred the images indicated differences existed between boys and girls. Children preferred images perceived as matching their own, with statistical significance. Girls were found to prefer images less than boys AND they were …
Determining Differential Effects Of Interleukin-2 On Innate And Adaptive Immune Cells In Lymphoid Organs And The Gastrointestinal Tract, Ayushi Singh
Electronic Theses and Dissertations
Interleukin-2 (IL-2) is a pleiotropic cytokine demonstrated to be effective in treating cancer. However, the clinical use of IL-2 can be associated with severe side effects including gastrointestinal toxicity (GT). Similar GT symptoms are observed in inflammatory diseases such as CD (CD). Interestingly mounting evidence indicates a role for IL-2 in CD, but the underlying mechanisms are unknown. Indeed, studies on the in-vivo activities of IL-2 have mostly focused on secondary lymphoid organs and immune cells associated with them. Very few studies have addressed how IL-2 signals impact populations of immune cells in the gut. Here, we aim to identify …
Assessing The Effects Of Habitat And Manatee Exclusion Devices On Red Drum (Sciaenops Ocellatus) Movement Patterns In Estuarine Impoundments, Steven Baker
Electronic Theses and Dissertations
The Integrate-Transfer-Launch (ITL) complex impoundments located within the Kennedy Space Center security zone are known spawning sites for red drum (Sciaenops ocellatus). However, recent construction of manatee exclusion bollards around culverts leading into these impoundments may impede movement to and from this critical habitat. The goals of this study were to: 1) utilize passive acoustic telemetry to document patterns of red drum movement and habitat use within and around the ITL impoundments to assess how manatee exclusion bollards and environmental conditions may impact movement of red drum; and 2) explore red drum movement in response to environmental disturbance, specifically a …
Tumor-Targeted Conjugated Polymer Nanoparticles With Encapsulated Iron And Its Biomedical Application For In Vitro Killing Of Melanoma Cell Lines Through Ferroptosis Assisted Chemodynamic Therapy (Cdt), Khalaf Jasim
Electronic Theses and Dissertations
Melanoma represents one of the most aggressive and lethal forms of skin cancer, with annually rising incidences throughout the world. Although chemotherapy modalities remain the mainstay of treatment, the therapeutic potential of chemotherapy typically is hampered by multidrug resistance (MDR) and nonspecific drug distribution that causes side-effects. To surmount such limitations, novel nanoformulations of low band-gap poly ({4,8-bis [(2-ethylhexyl) oxy] benzo [1,2-b:4,5-b?] dithiophene-2,6-diyl}{3-fluoro-2-[(2-ethylhexyl) carbonyl] thieno [3,4-b] thiophenediyl}) (PTB7) and poly [2,1,3-benzothiadiazole- 4,7- diyl [4,4-bis (2-ethylhexyl)- 4H-cyclopenta [2,1-b:3,4-b'] dithiophene-2,6-diyl]] (PCPDTBT) were fabricated by a reprecipitation method. These conjugated polymer nanoparticles were functionalized with the polypeptide endothelin-3 (EDN3-CPNPs) to target melanoma. The …
Lifetime History Of Concussions And Behavioral Measures Of Anhedonia, John O'Donnell
Lifetime History Of Concussions And Behavioral Measures Of Anhedonia, John O'Donnell
Electronic Theses and Dissertations
Concussions are the most common neuropsychological problem in the United States and are associated with sequelae such as cognitive complaints and depression-related symptoms. Recent research suggests that head trauma is associated with anhedonia and that concussions have the potential to damage axons and postsynaptic connections in neural circuits that play a role in reward processing. Anhedonia may be better understood as an overarching construct with multiple subtypes including motivational, decisional, and consummatory. The current study examines the relationship between lifetime concussion history and subtypes of anhedonia using behavioral measures of reward processing: the Effort Expenditure for Rewards Task (EEfRT), Probabilistic …
An Investigation Of Science Of Reading And Learning Representation In Undergraduate Elementary Education Reading Courses In The State University System Of Florida, Jessica Camara
Electronic Theses and Dissertations
This study investigated the extent to which the science of reading instruction components and five science of learning principles were addressed in undergraduate elementary education required reading courses in the State University System (SUS) of Florida institutions. A document analysis of textbooks and syllabi was completed and evidence recorded in The Matrix for State University System (SUS) of Florida Scoring©. The results were reported in summary tables and an analysis of the data was conducted on the extent to which each science of reading component and science of learning principle were labeled explicitly, indirectly stated, or not present in syllabi …
Structure Of Reflectin Protein Probed By Solid-State Nuclear Magnetic Resonance, Tommy Boykin
Structure Of Reflectin Protein Probed By Solid-State Nuclear Magnetic Resonance, Tommy Boykin
Electronic Theses and Dissertations
An unusual protein found in squids, termed reflectin, possesses the unique ability for optical reflectivity and proton conductivity. Reflectin has the potential to become optically and electronically tunable, however, the molecular structure of reflectin has yet to be determined. Previous literature has considered using reflectin proteins as diffraction gratings, protonic transistors, and substrates for neural stem cell growth. Applying recombinant protein techniques, we purified the reflectin 4Ax4 protein. We determined the leucine, tryptophan, and threonine amino acids are in an ordered state by solid-state nuclear magnetic resonance (NMR). Knowing these ordered amino acids is possibly the key to understanding reflectin's …
Legends Of The Fabricated Wild: An Experimental Representation Of Natural Landscapes Through The Utilization Of Analog Film Techniques, Nicholas Twardus
Legends Of The Fabricated Wild: An Experimental Representation Of Natural Landscapes Through The Utilization Of Analog Film Techniques, Nicholas Twardus
Electronic Theses and Dissertations
Legends of the Fabricated Wild is a feature-length body of work of landscape films. Voice-Destroy, Self-Portrait: Impermanence and the titular Legends of the Fabricated Wild are the experimental films that comprise my body of work. Keep your Distance, a single-channel installation, is a supplemental piece. Legends of the Fabricated Wild frames the complex interaction between a filmmaker and the collective unconsciousness of the natural environment, a theory outlined by Carl Jung, considering the implications and discoveries along the way. Subtle movement and precise compositions provide a transcendental perspective on the natural Florida landscape. Images of landscapes devoid of human figures …
I Decide When You Die: A Mixed-Methods Analysis Of Prior Reporting Of Physical Violence For Intimate Partner Homicides By Heterosexual Spouses In Florida, Donna King
Electronic Theses and Dissertations
It is generally believed that a victim of an intimate partner homicide, who faced ongoing physical violence prior to the killing, would have contacted authorities for assistance or protection some time prior to their death. However, the results of this study show that this notion that a victim of ongoing abuse will, more than likely, request help is a misconception. Through qualitative and quantitative methods analysis, this study reveals the dearth of prior reporting of physical violence to law enforcement or the court when an intimate partner homicide takes place between heterosexual spouses in Florida between 2006 and 2016. Additionally, …
If A Virtual Tree Falls In A Simulated Forest, Is The Sound Restorative? An Examination Of The Role Of Level Of Immersion In The Restorative Capacity Of Virtual Nature Environments, Jessica Michaelis
Electronic Theses and Dissertations
Stress and cognitive fatigue have become a pervasive problem, especially in Western society. Stress and cognitive fatigue can have deleterious effects not only on performance, but also on one's physical and mental health. This dissertation presents a study in which the aim is to investigate the effects of virtual nature on stress reduction and cognitive restoration. Specifically, this study assessed the effects of Immersion (Non-immersive, Semi-immersive, Fully-immersive) and Exploration (Passive vs Active) on stress reduction and cognitive restoration. Additionally, restoration from the most effective virtual nature environment was compared to that of taking an active coloring break. Eighty-three university students …