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Spatial And Temporal Distributions Of Pelagic Sargassum In The Intra-Americas Sea And Atlantic Ocean, Mengqiu Wang

USF Tampa Graduate Theses and Dissertations

Pelagic Sargassum is one type of marine macroalgae that is known to be abundant in the Gulf of Mexico and Sargasso Sea. It is also known to serve as a critical habitat for many marine animals. In the past few years, large amounts of Sargassum have been reported in the Tropical Atlantic and Caribbean Sea (CS), causing significant environmental and economic problems. The goal of this study is to improve the understanding of Sargassum distributions, quantity, transport pathways, and bloom mechanisms in the CS and Tropic Atlantic through combining a variety of techniques including satellite remote sensing, field and laboratory …

An Interdisciplinary Approach To Understanding Predator-Prey Relationships In A Changing Ocean: From System Design To Education, Ileana M. Freytes-Ortiz

USF Tampa Graduate Theses and Dissertations

Climate change is ecologically and socially complex, deemed the most important issue of our generation. Through this dissertation I have approached climate change research through an interdisciplinary perspective, investigating how this phenomenon will affect marine ecological systems, how we can better develop experimental systems to answer ecological questions, and how we can effectively educate about this issue.

In Chapter 2, I provided accessible alternatives for researching the effects of climate change (elevated temperatures and pCO2) on marine ecosystems. I designed, built, and troubleshooted two accurate and inexpensive climate-controlled experimental systems capable of maintaining target conditions: a temperature-controlled system and an …

Decreased Visibility: A Narrative Analysis Of Episodic Disability And Contested Illness, Melissa Jane Welch

USF Tampa Graduate Theses and Dissertations

In the United States alone, disability touches the lives of a tremendous amount of people. An increased prevalence of chronic illness, coupled with an aging population means it is likely and perhaps inevitable that everyone will experience disability in one way or another over the course of their lifetime. However not everyone who is disabled is recognized as such. Culturally, the narrative of “the healthy disabled person,” – or someone who is healthy, permanently, predictably, and visibly disabled renders many people with chronic and episodic pain, fatigue, and illness as unrecognizable as disabled. Even though increasing numbers of disability scholars …

A New Approach To The Development Of An Rsv Anti-Viral Targeted Nanocarrier For Dual Inhibition Of Viral Infection And Replication, Anthony N. Singer

USF Tampa Graduate Theses and Dissertations

Respiratory Syncytial Virus (RSV) is a potentially life-threatening respiratory pathogen that infects approximately 64 million children and immunocompromised adults globally per year. Currently, there is a need for prophylactic and therapeutic approaches effective against primary and secondary RSV infections. This project focuses on the development of a simple, smart, and scalable anti-RSV nanotherapeutic that combines novel cellular antiviral defense mechanisms targeting the inhibition of viral fusion and replication. An ICAM-1 targeted liposomal nanocarrier will be synthesized and coated with a layer of chitosan containing the anti-fusion HR2-D peptide as an extracellular defense mechanism. Additionally, chitosan complexed to dual expressing short …

Orientation Invariance Methods For Inertial Gait, Ravichandran Subramanian

USF Tampa Graduate Theses and Dissertations

Intelligent devices such as smart phones, smart watches, virtual reality (VR) headsets and personal exercise devices have become integral elements of accessories used by many people. The ability of these devices to verify or identify the user could be applied for enhanced security and user experience customization among other things. Almost all these devices have built-in inertial sensors such as accelerometer and gyroscope. These inertial sensors respond to the movements made by the user while performing day to day activities like walking, getting up and sitting down. The response depends on the activity being performed and thus can be used …

Impact Of Recirculating Nitrified Effluent On The Performance Of Passive Onsite Hybrid Adsorption And Biological Treatment Systems, Amulya Miriyala

USF Tampa Graduate Theses and Dissertations

Approximately 25% of households in the U.S. treat their wastewater onsite using conventional onsite wastewater treatment systems (OWTS). These systems typically include a septic tank or a series of septic tanks followed by a soil absorption system. They effectively remove biochemical oxygen demand (BOD), total suspended solids (TSS), fats and grease but are not designed to remove significant amounts of nitrogen. High nitrogen loading to coastal and ground waters can be dangerous to aquatic life and public health. Hence, there is a need for advanced onsite wastewater treatment systems that can effectively remove nitrogen. Making enhanced nitrogen removal for OWTS …

Race And Gender In (Re)Integration Of Victim-Survivors Of Csec In A Community Advocacy Context, Joshlyn Lawhorn

USF Tampa Graduate Theses and Dissertations

In this thesis, I use feminist ethnography at a nonprofit organization to analyze the racialized gender in (re)integration of victim-survivors of commercial sexual exploitation of children (CSEC). Critical race feminism and intersectionality are the theoretical frameworks to guide the analysis of community advocacy. The analysis considers two themes with various subsections that capture CSEC at the site. The first theme analyzes the definition, challenges, coordination and rhetoric of reintegration at the site. The second theme highlights the site’s racial identity, Black victimhood of victim-survivors of CSEC in the context of community, and racialized gender within reintegration. I discuss the strategic …

De Mestizas A Indígenas: Reindigenization As A Political Strategy In Ecuador, Pamela X. Pareja

USF Tampa Graduate Theses and Dissertations

The 1990s were a period of intense socio-economic upheaval in Ecuador, in part due to the numerous protests that would come to be known as the Levantamiento Indígena. Notoriously disenfranchised since the bloody conquest of the Americas, peoples of various Indigenous nationalities that reside within Ecuador fought for the constitutional recognition of the nation as both plurinational and multicultural, in order to secure intercultural public policies that would affect patterns of agrarian distribution, indigenous education, health, and overall representation. The prominence of the Indigenous movement and the revalorization of the Indigenous identity throughout Ecuador became an attractive vehicle for which …

Diversity Of Ssdna Phages Related To The Family Microviridae Within The Ciona Robusta Gut, Alexandria Creasy

USF Tampa Graduate Theses and Dissertations

The gut microbiome is a complex ecosystem of bacteria, viruses, and fungi that strongly influences animal health. The bacterial component, for example, contributes orders of magnitude more gene products to host physiology than the host genome; thus, changes to the composition of these bacterial communities can have profound influences on the health of the animal. By infecting and lysing their hosts, viruses (particularly viruses infecting bacteria or phages) can affect critical functions in these environments, yet the consequences of these infections remain to be fully described. Most studies investigating gut viromes to date have focused on double-stranded DNA (dsDNA) phages …

Therapeutic Modulation Of Alzheimer’S Disease With Biological (Hucbs) And Pharmacological (Lispro) Approaches, Md Ahsan Habib

USF Tampa Graduate Theses and Dissertations

Dementia is the top global public health threat of the twenty first century. Within the dementia spectrum, Alzheimer’s disease (AD) is the most common type of dementia that occurs with aging and accounts for about 60% - 80% of diagnosed cases. But currently available discoveries failed to develop disease-modifying therapies for all patients living with AD. Recent discoveries can only partially slow down cognitive decline in a small subset of patients with limited effectiveness. The heterogeneity and complexity of the pathophysiology of AD indicate that a single drug approach may not be sufficient to prevent disease onset and progression. Human …

The Role Of Fathers In Behavioral Parent Training: An Exploration Of Parent-Related Factors In Parent And Child Treatment Outcomes, Brittany L. Jordan-Arthur

USF Tampa Graduate Theses and Dissertations

Despite a well-documented need for parent training in the treatment and prevention of child behavior problems, as well as the well-documented benefit of including fathers in preventative and treatment interventions, surprisingly little clinical intervention research examines the role of fathers in such trainings. This research examined the role of father involvement in behavioral parent training by examining parent-related characteristics in relation to treatment outcomes for both mothers and fathers, examining differences between mothers and fathers, and examining the additive benefit of including fathers in treatment across two studies. Both studies utilized archival data obtained from a university- and community-based parent …

Biosorption Of Cobalt By Using Pseudomonas Aerguinosa Bacterial Strain, Abhaysinh Arvind Dharanguttikar

USF Tampa Graduate Theses and Dissertations

A study of biosorption of cobalt metal by Pseudomonas Aerguinosa gram-negative bacterial strain is presented. The present study is carried out to determine the optimum conditions of cobalt biosorption at ultra-low concentration (ppb range) in aqueous solutions. The receptiveness of cobalt metal on the extracellular surface of bacterial strain was examined by varying the pH, Initial concentration of metal and treatment time. Experimental data showed that effect of pH and treatment time is prevalent in biosorption of cobalt and by increasing both these parameters resulted in the efficient sorption of cobalt on the extracellular surface of Pseudomonas Aerguinosa. In some …

Chemical Investigation Of Bioactive Marine Extracts, Selam Hagos

USF Tampa Graduate Theses and Dissertations

Natural products have been a fundamental source of medicinal scaffolds for decades; with sixty percent of marketed drugs. Many synthetic chemists are focused on synthesizing potent and nontoxic compounds for pharmaceutical targets, however, nature is still proving to be a source of new bioactive compounds. Produced by the host organism for defense, reproduction and communication, secondary metabolites also demonstrate promising bioactivity against human pathogens. Hence, natural product chemists continue their quest for new leads.

As a continuation of these efforts, this thesis attempts to explore fungi and sponges for new chemistry, and ultimately, new drug candidates. Antarctica is largely untapped; …

Intraspecific Variation In The Recruitment Dynamics Of A Transgressing Avicennia Germinans Population, Shannon Victoria Grogan

USF Tampa Graduate Theses and Dissertations

Survival and establishment of mangrove propagules at higher tidal elevations beyond the landward margin of their distribution is a requirement for the continued existence of mangrove populations in response to rising sea-level. Despite the growing body of literature that discusses mangrove recruitment patterns, few studies have empirically examined establishment and post-establishment growth success of propagules at the higher intertidal positions into witch mangrove populations are migrating. Using an experimental field approach, this study compares establishment and post-establishment growth success of propagules at three positions across a tidal elevation gradient within a landward-transgressing mangrove population of SW Florida (USA). I observed …

Development Of The Cybersecurity Attitudes Scale And Modeling Cybersecurity Behavior And Its Antecedents, David J. Howard

USF Tampa Graduate Theses and Dissertations

As organizations have become more reliant on computers and technology to operate in a globalized world, they have also become more vulnerable to cyberattacks on their networks. The expense to organizations from cyberattacks now exceeds $400 billion USD annually. These costs highlight the need for behavioral research in the cyber domain. The first phase of this research developed an instrument to measure workers’ cybersecurity attitudes. An iterative process resulted in a scale with good psychometric properties - The Cybersecurity Attitudes Scale. The scale measures two factors: cyber policy adherence attitudes and perceived vulnerability to a cyberattack. The second phase of …

An Evaluation Of Marsh Shoreline Erosion And Sediment Deposition In The Grand Bay National Estuarine Research Reserve, Mississippi, Usa, Joseph Terrano

USF Tampa Graduate Theses and Dissertations

Coastal marshes serve important ecologic and economic functions, such as providing habitat, absorbing floodwaters and storm surges, and sequestering carbon. Throughout the northern Gulf of Mexico, coastal marshes are disappearing due to wave attack, sea-level rise, sediment export, and subsidence. Marsh area increases when sediments accumulate at the marsh shoreline, accrete vertically, and when non-marsh areas are colonized by marsh vegetation. Marsh shoreline erosion results in net marsh loss when transgression rates at the marsh-water edge exceed upland-marsh migration. The balance between marsh destroying and marsh creating processes determines the long-term survivability of a marsh system. Thus, processes of shoreline …

Through The Lens Of Objectification Theory: Social Media Use And Women's Behavioral Health, Gina-Maria Roca

USF Tampa Graduate Theses and Dissertations

Background: Objectification theory considers how gender and culture intersect to position women at a greater risk of developing eating disorders, depression, and sexual dysfunction. Self-objectification is defined as the internalization of a third person perspective to view one’s own body, which then leads to mental health consequences of anxiety, body shame, insensitivity to internal drives, and decreased peak motivational states. Body surveillance, the habitual and constant monitoring of the body, denotes the behavioral manifestation of self-objectification. Altogether, the accumulation of objectifying experiences and mental health consequences heighten women’s risks of developing the aforementioned mental disorders.

Rationale: Extant experimental and correlational …

Raptors And Humans: Exploring Alternative Therapies In Non-Clinical Environments Using Birds Of Prey, Kaleigh Hoyt

USF Tampa Graduate Theses and Dissertations

This study aims to deconstruct current conceptions about animal-assisted interventions by investigating relationships between human beings and birds of prey. Interactions between birds of prey, or “raptors,” provide novel cases from which to reexamine failed attempts to provide empirical data in support of alternative therapies. Previous research addressing the efficacy of animal-assisted interventions is simply not robust enough to be considered a feasible treatment option by medical professionals. By extension, models of self-regulation in psychology are often presented using reductionist models and oversimplified therapeutic outcomes. Taken together, raptor-human relationships help to highlight the shortcomings of each, as well as potential …

Partial Characterization Of Plasmodium Falciparum Protein Kinase Abck2 (Pfabck2), Muhammad Khalid

USF Tampa Graduate Theses and Dissertations

Malaria is a major threat to the public health worldwide as it is affecting populations in tropical and subtropical areas globally. Among those populations are around 40% of pregnant women and children who are susceptible to this disease. Plasmodium falciparum is the most lethal agent that causes malaria in human. Currently, there is drug resistance against antimalarial drugs in parasite against treatment of malaria infections, it is essential to search for new drug targets in order to find cure and alleviate suffering of human population.

There are approximately 100 protein kinases in P. falciparum that are involved in phosphorylation of …

“Livin’ The Dream?” How Veterans Of Operations Enduring Freedom And Iraqi Freedom Negotiate The Experience Of Illness As They Transition From Healthy Warrior To Sick Veteran, Jodie L. Sweezey

USF Tampa Graduate Theses and Dissertations

As combat veterans returned from supporting the wars in Iraq and Afghanistan, questions over the safety of vaccinations as well as exposure to burn pit smoke and toxic metals lying dormant in the sand emerged. For many, returning home was marred by unexplained symptoms followed by diagnoses of autoimmune diseases and/or cancer. This research examines how these veterans negotiate this transition from healthy to sick struggling with the many forces that interact with this transition. I focused on the lived experience of their illness as it is non-verbally expressed through embodiment, verbally expressed through illness narratives, and negotiated to avoid …

Cue Competition During Phonotactic Processing In Bilingual Adults As Measured By Eye-Tracking, Katherine Manrique

USF Tampa Graduate Theses and Dissertations

It is well documented in the literature that bilingual speakers simultaneously activate both languages during spoken language processing (e.g., Marian & Spivey, 2003). However, parallel activation can lead to competition between the two languages (e.g., Blumenfield & Marian, 2013; Freeman, Shook, & Marian, 2016). The Unified Competition model (UCM) provides a theory as to how bilingual speakers navigate through two languages while different linguistic cues are competing (MacWhinney, 2005). The UCM proposes that cues are used to process language, based on cue validity (the product of how reliable and available a cue is), which is determined by cue strength (a …

Effects Of Body Temperature And General Anesthetics On Intraocular Pressure In Rats, Aditi Pillai

USF Tampa Graduate Theses and Dissertations

Ocular hypertension has been identified as the fundamental risk factor in glaucoma which is the leading cause for irreversible blindness in the world. Understanding the different factors that affect IOP is of utmost importance in clinical management as IOP is considered as the fundamental factor in assessing the efficiency of glaucoma medications. Several studies have attempted to assess factors that could affect IOP including age, body position, blood pressure, anesthetics commonly used during eye operations, etc. However, in most of these studies IOP is measured under anesthesia using rodent models and these anesthetics could affect the IOP measurements directly or …

Sustainable Production Of Bio-Based Succinic Acid From Plant Biomass, Enlin Lo

USF Tampa Graduate Theses and Dissertations

Succinic acid is a compound used for manufacturing lacquers, resins, and other coating chemicals. It is also used in the food and beverage industry as a flavor additive. It is predominantly manufactured from petrochemicals, but it can also be produced more sustainably by fermentation of sugars from renewable feedstocks (biomass). Bio-based succinic acid has excellent potential for becoming a platform chemical (building block) for commodity and high-value chemicals.

In this study, we focused on the production of bio-based succinic acid from the fiber of sweet sorghum (SS), which has a high fermentable sugar content and can be cultivated in a …

Ecophysiology Of Oxygen Supply In Cephalopods, Matthew A. Birk

USF Tampa Graduate Theses and Dissertations

Cephalopods are an important component of many marine ecosystems and support large fisheries. Their active lifestyles and complex behaviors are thought to be driven in large part by competition with fishes. Although cephalopods appear to compete successfully with fishes, a number of their important physiological traits are arguably inferior, such as an inefficient mode of locomotion via jet propulsion and a phylogenetically limited means of blood-borne gas transport. In active shallow-water cephalopods, these traits result in an interesting combination of very high oxygen demand and limited oxygen supply. The ability to maintain active lifestyles despite these metabolic constraints makes cephalopods …

"I'Ve Never Had That": An Exploration Of How Children Construct Belonging And Inclusion Within A Foodscape, Olivia M. Fleming

USF Tampa Graduate Theses and Dissertations

American consumer culture is often depicted as competitive and based on the acquisition of capital and status through goods or experiences. To date, researchers commonly exclude children from this conversation and therefore fail to wholly assess the impact consumer culture has on one’s choices or behavior. This study adds to a growing body of literature exploring the experiences and agency of children within the broader consumer culture by examining how marginalized children from a lower socioeconomic background use food as a resource for belonging among peers. Observation and interview data collected during designated lunch and snack times at a summer …

A Woman's Place In Jazz In The 21st Century, Valerie T. Simuro

USF Tampa Graduate Theses and Dissertations

Women often harbor ingrained attitudes that restrain them from achieving a successful career. They retain deep-seated attitudes that confine them to a self-defined space based on internalized patriarchal standards. Some women do achieve success in spite of the challenges they face. Esperanza Spalding, a young, African-American woman jazz instrumentalist is one such success story. She defies convention, plays an unconventional musical instrument in a musical genre that is historically deemed a masculine world. My thesis discusses the difficult path she traverses between feminist ideals and commercial success. It discusses what characteristics of femininity she chooses to display. Some intentional, some …

Underground Stormwater Treatment Performance In Urban Coastal Catchments: Case Study Of Baffle Boxes In The City Of Tampa, Awet Eyob Tsegay

USF Tampa Graduate Theses and Dissertations

In coastal urban regions, underground stormwater treatment units are suitable infrastructure options because they take less space where premium land is expensive. Even then, they should be accessible and ideally small enough to fit into existing stormwater networks. Since 2003, the City of Tampa and Florida’s Department of Transportation (FDOT) have installed 47 baffle boxes into the city’s stormwater pipe networks. Baffle boxes are underground stormwater treatment structures designed to capture sediments and floating debris. Since their deployment, many challenges regarding their practical sediment capturing performance was raised by the city.

The objective of this research was to evaluate the …

Relationship Between Extracurricular Activity Involvement And Student Success Among High School Students In Accelerated Academic Curricula, Camille E. Hanks

USF Tampa Graduate Theses and Dissertations

Over the last few decades, a growing body of research has linked extracurricular activity participation with positive outcomes among high school students. Extracurricular activities often provide a rich environmental context for positive youth development, given that they provide opportunities for identity formation, the creation of interpersonal connections, and the development of social, emotional, academic, and/or career-related skills. However, there are no studies to date examining the relationship between extracurricular activity involvement and student outcomes among students enrolled in rigorous high school curricula (e.g., Advanced Placement [AP] and International Baccalaureate [IB]). The purpose of the current study was to extend the …

Quantitative Proteomics To Support Translational Cancer Research, Melissa Hoffman

USF Tampa Graduate Theses and Dissertations

Altered signaling pathways, which are mediated by post-translational modifications and changes in protein expression levels, are key regulators of cancer initiation, progression, and therapeutic escape. Many aspects of cancer progression, including early carcinogenesis and immediate response to drug treatment, are beyond the scope of genetic profiling and non-invasive monitoring techniques. Global protein profiling of cancer cell line models, tumor tissues, and biofluids (e.g. serum or urine) using mass spectrometry-based proteomics produces novel biological insights, which support improved patient outcomes. Recent technological advances resulting in next-generation mass spectrometry instrumentation and improved bioinformatics workflows have led to unprecedented measurement reproducibility as well …

Ripple Effects Of The Belo Monte Dam: A Syndemic Approach To Addressing Health Impacts For The Downstream Community Of Gurupá, Cynthia A. Pace

USF Tampa Graduate Theses and Dissertations

This dissertation examines the public health impacts of a large dam project on a downstream community using the framework of Syndemic Theory. The particular focus is the Belo Monte Dam, located in the Brazilian Amazon, and its impact on the community of Gurupá, Pará. At the present time the Belo Monte Dam, which is nearing completion, stands out in scale as being the world’s third largest dam complex. Gurupá is a community well known (and well-studied) in the social science literature as Amazon Town. The aims of this study are to assess the pre-existing public health of Gurupá, as well …