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Assessing The Link Between Coastal Development And The Quality Of Fish Habitat In Mangrove Tidal Tributaries, Justin Micheal Krebs

USF Tampa Graduate Theses and Dissertations

To assess the potential influence of coastal development on the quality of estuarine habitat for nekton, we characterized land use and the intensity of land development surrounding small tidal tributaries of Tampa Bay. Based on this characterization, we classified tributaries as undeveloped, industrial, urban or man-made (i.e., mosquito-control ditches). Over one-third (37%) of tributaries were determined to be heavily developed, while fewer than one-third (28%) remain relatively undeveloped. We then examined the nekton community from eleven tributaries in watersheds representing the defined land-use classes. Whereas mean nekton density and species richness were both independent of land use, nekton-community structure differed …

Development And Application Of An F/M Based Anaerobic Digestion Model And The Rt-Ribosyn Molecular Biology Method, Matthew Raymond Cutter

USF Tampa Graduate Theses and Dissertations

A simple anaerobic digestion model has been developed for a continuously-stirred tank reactor (CSTR), which links the specific biogas production rate to the food/microorganism ratio (F/M). The model treats the various microbial populations involved in the sequential biological processes involved in anaerobic digestion as a composite and links the entire biomass specific growth rate directly to the specific biogas production rate. The model was calibrated by determining the specific gas production rate for a range of F/M values using a municipal wastewater seed sludge. The model predictions for steady-state biogas production rates were compared to observed biogas production and volatile …

Don't Blame It On My Ovaries: Exploring The Lived Experience Of Women With Polycystic Ovarian Syndrome And The Creation Of Discourse, Jennifer Lynn Ellerman

USF Tampa Graduate Theses and Dissertations

Polycystic Ovarian Syndrome (PCOS) is the most common endocrine disorder among females of childbearing age, affecting between 6-8% of the population. It is also the most common cause of infertility. Females with PCOS may have two or more of a constellation of symptoms that can potentially leave them at odds in terms of normative ideals of femininity. This study examines how feminist theory interrogates and analyzes knowledge about the body and PCOS, integrating the lived experiences of women to provide a deeper, more meaningful understanding of what it means to be a woman with PCOS.

"You Have To Have Children To Be Happy:" Exploring Beliefs About Reproduction With Burmese Refugee Women In The United States, Kara E. Mcginnis

USF Tampa Graduate Theses and Dissertations

Burmese refugees are entering the US at record speed. Resettlement agencies focus on immediate needs, and ethnic community-based organizations (ECBOs) fill any service gaps through community-driven programs. The Tampa Bay Burmese Council (TBBC) is an ECBO in Tampa, FL dedicated to the Burmese community. This research explores the reproductive beliefs of the women in the community, paying particular attention to any differences that arise due to beliefs specific to their ethnic group. Findings include the importance of menses for women's health, the preference for both male and female children, a lack of knowledge about family planning methods, a tendency to …

Development Of A Tool For Pressure Ulcer Risk Assessment And Preventive Interventions In Ancillary Services Patients, Monica Shutts Messer

USF Tampa Graduate Theses and Dissertations

The incidence of nosocomial pressure ulcers has continued to increase in U.S. hospitals over the past 15 years despite the implementation of national preventive guidelines and the wide-spread use of validated risk assessment tools. The majority of preventive efforts and tools have been focused primarily on patients who are bed-ridden or immobile for extended periods. What has not been well studied or identified is the potential risk for pressure injury to patients undergoing diagnostic procedures in hospital ancillary units where extrinsic risk factors such as high interface pressures on procedure tables and friction and shear from positioning and transport can …

Overcoming Adversity: Resilience Of Low-Income, Nonresidential, Black Fathers, Erica Elizabeth Coates

USF Tampa Graduate Theses and Dissertations

Objective. This study examined the factors associated with higher levels of paternal involvement among low-income, nonresidential, Black fathers. Method. Participants were 110 fathers of children up to the age of 10. Participants completed psychometrically sound measures of social support, spirituality, family of origin relationships, coparenting relationship quality, psychological well-being, motivation, conviction history, resilience, and father involvement. Results. A simultaneous multiple regression indicated that better psychological well-being and coparenting relationship quality and lower conviction rates since the birth of the child were significant predictors of higher levels of paternal involvement. Mediational analysis revealed that coparenting relationship quality partially mediated the relationship …

Specialization In Small-Scale Societies: The Organization Of Pottery Production At Kolomoki (9er1), Early County, Georgia, Travis Laforge

USF Tampa Graduate Theses and Dissertations

Investigating the organization of production systems can reveal much about a society, in particular how resources and labor were allocated, and the influence that economic, political, social, and ceremonial institutions had on the production process. Interpreting the nature of specialized production is useful for understanding how production was organized. In turn, the degree of standardization exhibited by the goods being produced is used to determine the nature of specialization. While archaeological research regarding specialized production has expanded over time to incorporate a wide range of societies, such research is often focused on complex societies. The research presented here focuses on …

Design And Construction Of Functional Metal-Metalloporphyrin Frameworks, Le Meng

USF Tampa Graduate Theses and Dissertations

Porous metal-organic frameworks are a new type of functional materials with potential applications for gas storage, gas separation, catalysis, biomedical and chemical sensors. This thesis describes several porous metal-metalloporphyrin frameworks (MMPFs), which were synthesized with a series of transition metals and 5,15-bis(3,5-dicarboxyphenyl)-10,20-bis(2,6-dibromophenyl)porphine. Among these MMPFs, the cobalt MMPF (CoBrPTC) has a fcu structure, which represents the first porphyrin-based MOF with this topology. CoBrPTC was evaluated as heterogeneous catalyst and demonstrated interesting catalytic performances.

Developing Predictive Models For Lung Tumor Analysis, Satrajit Basu

USF Tampa Graduate Theses and Dissertations

A CT-scan of lungs has become ubiquitous as a thoracic diagnostic tool. Thus, using CT-scan images in developing predictive models for tumor types and survival time of patients afflicted with Non-Small Cell Lung Cancer (NSCLC) would provide a novel approach to non-invasive tumor analysis. It can provide an alternative to histopathological techniques such as needle biopsy. Two major tumor analysis problems were addressed in course of this study, tumor type classification and survival time prediction. CT-scan images of 109 patients with NSCLC were used in this study. The first involved classifying tumor types into two major classes of non-small cell …

Evidence For Viral Infection In The Copepods Labidocera Aestiva And Acartia Tonsa In Tampa Bay, Florida, Darren Stephenson Dunlap

USF Tampa Graduate Theses and Dissertations

Mesozooplankton are of critical importance to marine food webs by transferring energy from the microbial food web to higher trophic levels and depositing energy to the deeper ocean layers through fecal deposition. While decades of research have shown that viruses have significant impacts in the oceans, and infect a wide range of organisms from bacteria to whales, there is still little known about the impacts of viruses on the mesozooplankton community. As copepods are the most abundant mesozooplankton group, this study sought to characterize the viruses present in natural populations of the calanoid copepods Acartia tonsa and Labidocera aestiva in …

Development Of An Integrated Process Model For Algae Growth In A Photobioreactor, Mehregan Jalalizadeh

USF Tampa Graduate Theses and Dissertations

While understanding the kinetics of algae growth plays an important role in improving algae cultivation technology, none of the existing kinetic models are able to describe algae growth when more than three growth limiting factors are involved. A model was developed in this study to describe algae growth in a photobioreactor. Two expressions were proposed based on the Monod model to relate the specific growth rate of algae to the concentration of nitrogen, phosphorus, inorganic carbon and light intensity in the culture media. Algal biomass concentration as a function of time was calculated by solving mass and energy balances around …

An Ecological Assessment Of A Juvenile Estuarine Sportfish, Common Snook (Centropomus Undecimalis), In A Tidal Tributary Of Tampa Bay, Florida, Adam Benjamin Brame

USF Tampa Graduate Theses and Dissertations

The common snook, Centropomus undecimalis, is an estuarine dependent sport fish that relies upon subtidal wetlands as nursery habitat. Despite the economic and recreational significance of this species, there are portions of its life history and biology that are poorly understood, particularly its early life history. Understanding juvenile snook use of wetland habitats is crucial given the rapid loss and degradation of these areas to anthropogenic impacts. Young-of-the-year snook were collected in pond and creek habitats of a single wetland system to assess early life ecology and habitat use. Proxies of habitat quality were used to determine which habitats …

Behavioral And Histological Effects Of Traumatic Brain Injury On Alzheimer's Disease Transgenic Mice, Sara Leilani Kellogg

USF Tampa Graduate Theses and Dissertations

The main objective of this study was to elucidate the possible mechanistic link between traumatic brain injury (TBI) and Alzheimer's disease (AD) using an animal model. We examined behavioral and histological effects of TBI in pre-symptomatic AD-transgenic mice (C57B6/SJL/SwissWebster/B6D2F1). In previous studies, these mice displayed AD-like behavioral deficits by 15-17 months of age and AD-like neuropathology as early as six months of age. To clarify the effects of TBI on these mice, the present study began when they were about three months of age and the study ended when they were about five months of age. As a control, non-transgenic …

Metal Oxide Graphene Nanocomposites For Organic And Heavy Metal Remediation, Tanvir E. Alam

USF Tampa Graduate Theses and Dissertations

This thesis consists of two research problems in the water decontamination area. In the first work, the main focus is to understand the structure and photocatalytic activity of titanium dioxide with graphene (G-TiO2) which is synthesized by using sol-gel method. The photocatalytic activity of TiO2 is limited by the short electron hole pair recombination time. Graphene, with high specific surface area and unique electronic properties, can be used as a good support for TiO2 to enhance the photocatalytic activity. The obtained G-TiO2 photocatalysts has been characterized by X-Ray Diffraction (XRD), Raman Spectroscopy, Transmission Electron Microscopy (TEM), FTIR Spectroscopy and Ultraviolet …

Hurricane Preparedness Of Community-Dwelling Dementia Caregivers In South Florida, Janelle J. Christensen

USF Tampa Graduate Theses and Dissertations

The aim of this dissertation is to explore how informal caregivers for people with dementia (PWD), who are community dwelling (i.e., not in nursing homes), prepare and plan for disasters. The research site is a particularly hurricane-prone region of Florida, second only to New Orleans in its vulnerability. An underlying assumption of this research is that caregivers for PWD have to plan and anticipate problems that are unique to their role. The rationale for the study described here is that disaster planning and mitigation save lives (Tengs et al. 1995), but there is little or no literature on disaster planning …

Compound-Specific Stable Isotopic Analysis Of Protein Amino Acids: Ecological Applications In Modern And Ancient Systems, Greg Ellis

USF Tampa Graduate Theses and Dissertations

Stable isotopic analysis of the major biochemically important elements is an increasingly utilized tool in the study of ecology. Patterns of isotopic fractionation in carbon and nitrogen are used to determine trophic linkages, nutrient pathways, and sources of primary production in numerous contexts. Traditional techniques rely on measurements made of bulk samples such as tissue, but emerging methods using individual chemical compounds provide a means of achieving deeper understanding in a variety of inquiries.

Amino acids, as the building blocks of proteins, are the dominant nitrogen-bearing biomolecules and are a major constituent of all life. Patterns of isotopic fractionation during …

Evaluation Of Urinary Pesticide Biomarkers Among A Sample Of The Population In The United States, Alex Lance Lebeau

USF Tampa Graduate Theses and Dissertations

Pesticide use in the United States continues to attract negative public attention. In recent years, this attention has focused on the effects that chronic, low-level pesticides may have, especially on children and various sub-populations. Over the past decade, studies have attempted to correlate negative health effects with detections of pesticide biomarkers in biological media. The current research investigates biomarker of exposure levels in a sample of the United States population. Data from the 2001-2002 NHANES dataset (n=11,039) was evaluated. The detection frequency of urinary biomarkers of exposure and the geometric mean from the NHANES pesticide dataset (n=3,152) were determined. Of …

Water Quality Monitoring In A Pilot Marine Integrated Aquaculture System, Alex W. Kruglick

USF Tampa Graduate Theses and Dissertations

Land based aquaculture systems are growing in popularity, and there is a drive to improve the efficiency of their energy and water systems for both economic and environmental benefit. Recirculating Aquaculture Systems (RAS) generally refer to systems that recycle their wastewater streams to be more or less a zero discharge facility. A more sustainable approach is emerging in the form of Integrated Aquaculture Systems (IAS) where maximum utility is realized from the various components so that fresh water use is reduced, water quality is improved, energy use is reduced, and new markets are created or fulfilled. Under a grant from …

Renegotiating Identities, Cultures And Histories: Oppositional Looking In Shelley Niro's "This Land Is Mime Land", Jennifer Danielle Mccall

USF Tampa Graduate Theses and Dissertations

My master's thesis explores the photographic series "This Land is Mime Land," which Shelley Niro made in 1992. Despite this work's complex form and structure, there are currently no sustained studies of this series alone, or books solely dedicated to Niro's art. Instead, "Mime Land" is often discussed in compilations that address a number of Native artists, Western feminist practices, or multiple works in Niro's oeuvre. My thesis fills this gap, as I closely investigate how "Mime Land" asks the viewer to look at visual culture, histories and Niro herself. Bell hooks's definition of the "oppositional gaze" - meaning a …

Matrix Metalloproteinase Genes Are Transcriptionally Regulated By E2f Transcription Factors: A Link Between Cell Cycle Control And Metastatic Progression, Jacqueline Lea Johnson

USF Tampa Graduate Theses and Dissertations

The RbµE2F transcriptional regulatory pathway plays a critical role in the cell cycle. Rb is inactivated through multiple waves of phosphorylation, mediated mainly by cyclin D and cyclin E associated kinases. Once Rb is inactivated, cells can enter Sµphase. Collectively, three Rb family members and ten E2F proteins coordinate every additional stage of the cell cycle, from quiescence to mitosis. However the RbµE2F pathway is frequently altered in cancer. Aside from cell proliferation, the RbµE2F pathway regulates other essential cellular processes including apoptosis, cell differentiation, angiogenesis and DNA damage repair pathways, but its role in invasion and cancer progression is …

A Ctd Biotag For Mid-Sized Marine Predators, Heather Broadbent

USF Tampa Graduate Theses and Dissertations

Biologging tools for investigating the study of fine-scale linkages between animal behavior and the physical microstructure of the marine habitat are technically limited by substantial size, high cost or low sensor resolution. However, recent advances in electronic technologies and process techniques present attractive alternatives to current tag designs. Motivated by the need for a low-cost, compact CTD biotag for medium-sized marine animals, the University of South Florida Center for Ocean Technology developed a multi-sensor biotag for quantitative measurements of ocean salinity. This dissertation describes the development and performance of a novel CTD biotag used for animal-borne measurements of the physical …

The Role Of Tumor Suppressors, Ship And Rb, In Immune Suppressive Cells, Michelle Marie Collazo Ruiz

USF Tampa Graduate Theses and Dissertations

Regulatory T cells (Tregs) and myeloid-derived suppressor cells (MDSC) have been extensively studied in the past 30-40 years. Their potent suppressive capacity shown in several pathological and clinical settings, such as cancer and transplantation, has made it evident that better understanding their development and function is critical.

Specifically, Tregs play a pivotal role in preventing autoimmunity, graft-versus-host disease (GvHD), and organ graft rejection. We previously demonstrated that germline or induced SH2 domain-containing inositol 5-phosphatase (SHIP) deficiency in the host abrogates GvHD. Here we show that SHIP-deficiency promotes an increase of FoxP3+ cells in both the CD4+CD25+ and the CD4+CD25- T …

Optimization Of Bio-Impedance Sensor For Enhanced Detection And Characterization Of Adherent Cells, Dorielle T. Price

USF Tampa Graduate Theses and Dissertations

This research focuses on the detection and characterization of cells using

impedance-based techniques to understand the behavior and response of cells to internal/environmental changes. In combination with impedimetric sensing techniques, the biosensors in this work allow rapid, label-free, quantitative measurements and are very sensitive to changes in environment and cell morphology. The biosensor design and measurement setup is optimized to detect and differentiate cancer cells and healthy (normal) cells. The outcome of this work will provide a foundation for enhanced 3-dimensional tumor analysis and characterization; thus creating an avenue for earlier cancer detection and reduced healthcare costs.

The magnitude of …

Model And Validation Of Static And Dynamic Behavior Of Passive Diamagnetic Levitation For Energy Harvesting, Chamila Shyamalee Siyambalapitiya

USF Tampa Graduate Theses and Dissertations

This dissertation reports the investigation conducted on the static and dynamic behavior of the passive diamagnetic levitation systems.

Attachment of a device to a substrate hinders the optimum performance ability of vibrating devices by altering the dynamic behavior of the moving part whilst introducing higher overall stiffness. The significance of this effect is prominent especially in vibration based energy harvesters as higher stiffness elevates the resonance frequency of the system, making it difficult to tune into ambient low frequencies. Other advantages of the proposed method are given by the removal of mechanical bending elements, which are often the source of …

Caregiver Training: Increasing Generalization Of Parenting Skills Through Teaching Caregivers To Recognize Child Behavior, Mary Rachel Sawyer

USF Tampa Graduate Theses and Dissertations

Previous research has demonstrated the efficacy of a behavioral parent training program for increasing the accuracy of trained skills; however, few studies have examined the extent to which those skills generalize to the natural environment (i.e., the home) and are used with the target individual (i.e., the child). In addition, little is known about the direct effect that caregiver implementation of the skills has on child behavior. A multiple baseline across participants design was used to (a) assess caregiver accuracy with implementation of three parenting skills, and (b) assess subsequent effects of the parenting skills on child behavior. Results demonstrated …

Influence Of Stress And Cytokinic Profiles On Cognitive Performance In Older Adults, Kerri S. Rawson

USF Tampa Graduate Theses and Dissertations

ABSTRACT

With aging, changes in the immune system, makes cognitive performance, and the prevalence of stressors can lead to poorer overall functioning. Within the immune system, a balance should exist between cytokines regulating Th1 and Th2 immune responses; however, age-related declines in the endocrine and immune systems can disrupt this equilibrium. Several studies report higher levels of Th1 associated cytokines in inflammatory conditions of the brain, whereas fewer studies remark on Th2 associated cytokines and cognitive functioning. Declining cognitive abilities are a common concern that accompanies advancing age and some research has suggested the prevalence and impact of stressors lead …

The Electronic Structure Of Biomolecular Self-Assembled Monolayers, Matthaeus Anton Wolak

USF Tampa Graduate Theses and Dissertations

The studies presented here address the characterization of the electronic structure of various self-assembled monolayers (SAMs) of peptide nucleic acid (PNA) and tetraphenylporphyrin (TPP) SAMs and arrays, formed on gold substrates.

PNA is a promising alternative to DNA for bio-sensing applications, as well as for strategies for self-assembly based on nucleic acid hybridization. In recent years charge transfer through PNA molecules was a focus of research due to possible applications in self-assembled molecular circuits and molecular tools. In light of this research it is interesting to investigate the electronic structure of PNA interfaces to gold, a potential electrode material.

TPP …

Development Of A Bi-Directional Electronics Platform For Advanced Neural Applications, Luca Abbati

USF Tampa Graduate Theses and Dissertations

This work presents a high-voltage, high-precision bi-directional multi-channel system capable of stimulating neural activity through bi-phasic pulses of amplitude up to ∓50 V while recording very low-voltage responses as low as tens of microvolts. Most of the systems reported from the scientific community possess at least one of the following common limitations: low stimulation voltages, low gain capabilities, or insufficient bandwidth to acquire a wide range of different neural activities.

While systems can be found that present remarkable capabilities in one or more specific areas, a versatile system that performs over all these aspects is missing. Moreover, as many novel …

Zno Nanostructures: Growth, Characterization And Applications, Mikhail Ladanov

USF Tampa Graduate Theses and Dissertations

ZnO nanostructures have been investigated for quite a long time. However, only recently they triggered much interest due to advances in materials synthesis and characterization, as well as emerging demand for new nanostructured materials in novel device implementations.

A large part of the work was devoted to exploring new methodology for patterning growth sites and controlling nanowires morphology using the deposition methods that are compatible with integrated circuits (IC) processing. Microcontact printing was used to pattern the seeding layer, and, subsequently, ZnO nanowires through a resistless soft lithography process.

When considering hydrothermal growth of ZnO nanowires in the framework of …

Wetland And Lake Destruction, Development And Mental/Emotional Distress Among Residents Of Tampa Bay, Florida, Gina Larsen

USF Tampa Graduate Theses and Dissertations

The purpose of this research project is to understand how local environmental destruction in Tampa Bay, Florida, including changes in water resources and development activities, affects local Tampa Bay residents mentally and emotionally. The study also examines residents' personal connections with their landscape and documents the degree of stress that may be caused by experiencing environmental destruction through the use of interviews, freelists, and two psychometric stress scales (Hopkins Symptom Checklist-10 and the Environmental Distress Scale). The topic of emotional distress and environmental change has rarely been studied in social science research, particularly in the United States and with regards …