Digital Commons Network^™

Crystal Engineering Of Nutraceutical Cocrystals, Dalia A. Aboarayes

USF Tampa Graduate Theses and Dissertations

The work presented herein focus upon crystal engineering of nutraceutical cocrystals. Cocrystals are considered unique solid dosage form which has many advantages over other traditionally known solid forms. Furthermore, cocrystals have proven to improve stability, solubility and bioavailability of Active Pharmaceutical Ingredient (API) as shown in the case of carbamazepine and other APIs in previous studies.

Crystal engineering is commonly used to design new solid forms based on the bases of supramolecular chemistry. In this study, crystal engineering based on intensive Cambridge Structural Database (CSD) analysis used to predict and design new cocrystals of targeted nutraceuticals. Two nutraceuticals were selected …

Environmental Remediation Of Tnt Using Nanoscale Zero-Valent Iron Metal, Erica Echols

USF Tampa Graduate Theses and Dissertations

This research focused on the use of nanoscale zero-valent iron (NZVI) to remediate trinitrotoluene (TNT). Zero-valent iron has demonstrated effective degradation of TNT, however, these particles themselves have significant problems in treating sorbed phase TNT in the aerobic environment. This research was comprised of four areas: degradation studies of neat nano-iron with aqueous TNT, degradation studies of nanoiron emulsion with aqueous TNT, characterization of TNT in Vieques, Puerto Rico sediment, and Solid Phase Microextraction (SPME) technique interface with HPLC. Both neat and emulsion NZVI studies showed TNT degradation. More degradation was seen in studies using fresher iron. The results from …

Six Fifth Grade Students Experiences Participating In Active Gaming During Physical Eduction Classes, Lisa Witherspoon Hansen

USF Tampa Graduate Theses and Dissertations

As technology and sedentary lifestyles have become an integral part of children's lives, so too has the prevalence of childhood obesity. Although video games are often associated with influencing sedentary behaviors, active gaming is a new genre that requires children to become physically active while playing the games. In this inquiry I explored six fifth grade students' experiences participating in active gaming in physical education classes for 30 minutes, twice weekly, during an eight week (16 sessions) study. I used qualitative methods including interviews, journal entries, and observational field notes. Analysis of data revealed students have a "Persistence to Game" …

Building A Brighter Future Through Education: Student Housing For Single Parent Families, Carrie Cogsdale

USF Tampa Graduate Theses and Dissertations

On the possibilities of a child the Center for Disease Control says, “Every Child

should have the opportunity to reach their full potential”. (CDC) Children who grow up

in low-income families are at risk of falling behind in education before they even enter

kindergarten. Single parents that struggle to provide food and shelter often lack the time

and the resources to provide the early education that their children need. A college

education could provide these parents and their children with a better quality of life.

University student housing could include built in childcare services, educational

assistance and peer support, for …

Plp-Dependent Α-Oxoamine Synthases: Phylogenetic Analysis, Structural Plasticity, And Structure-Function Studies On 5-Aminolevulinate Synthase, Tracy D. Turbeville

USF Tampa Graduate Theses and Dissertations

5-Aminolevulinate synthase (ALAS) and 8-amino-7-oxononanoate synthase (AONS) are two of four homodimeric members of the alpha-oxoamine synthase family of pyridoxal 5'-phosphate (PLP)-dependent enzymes. The evolutionary relationships among α-oxoamine synthases representing a broad taxonomic and phylogenetic spectrum have been examined to help identify residues that may regulate substrate specificity.

The structural plasticity of ALAS has been documented in studies of functional circularly permuted ALAS variants and the single polypeptide chain ALAS dimer (ALAS/ALAS) exhibiting a greater turnover number than wild-type ALAS. An examination of the contribution of each ALAS/ALAS active site to the enzymatic activity shows that each active site makes …

Evaluating The Effects Of Exergaming On Physical Activity Among Inactive Children In A Physical Education Classroom, Victoria A. Fogel

USF Tampa Graduate Theses and Dissertations

Childhood obesity is a serious concern that requires the attention of the behavioral community. The U.S. Department of Health and Human Services (2007) recommends that children engage in physical activity for 60 minutes per day. Children spend the majority of their day in school, making school an ideal environment to increase the opportunity for physical activity. Simple, straightforward interventions that can be applied in the school setting, which take into consideration the environment and focus on maintenance by making the process of engaging in physical activity reinforcing, are greatly needed. Video games have been noted in the literature as a …

The Neuron-Silicon Carbide Interface: Biocompatibility Study And Bmi Device Development, Christopher L. Frewin

USF Tampa Graduate Theses and Dissertations

Damage to the central nervous system (CNS) leads to the generation of an immune response which culminates with the encapsulation of the damaged area. The encapsulation, known as a glial scar, essentially breaks neural signal pathways and blocks signal transmissions to and from the CNS. The effect is the loss of motor and sensory control for the damaged individual. One method that has been used successfully to treat this problem is the use of a brain-machine interface (BMI) which can intercept signals from the brain and use these signals to control a machine. Although there are many types of BMI …

Examining An Acute Environmental Trigger For Dysfunctional Eating: Measuring The Immediate Impact Of Fat Disparagement Media Exposure And Its Effects On Body Dissatisfaction, Negative Affect, Weight Control Practice Intentions, And Sub-Clinical Binge Eating Behavior In College Women, Susan Himes

USF Tampa Graduate Theses and Dissertations

Binge eating is a maladaptive eating practice associated with unhealthy weight control methods (vomiting, laxative abuse) and the development of weight gain and obesity. Isolating psychological and environmental variables that trigger binge eating can prevent or potentially moderate eating disturbance. Previous research implicates media exposure as an environmental contributor to psychological and eating disturbance. The current study sought to uncover whether fat stigmatization media exposure is an acute environmental trigger for psychological disturbance and binge initiation by dismantling fat media messages and experimentally manipulating messages. Undergraduate women (N=197) were assigned to one of four media message conditions: a fat negative …

Communicating Spirituality, Dying And A “Good Death” At The End-Of-Life: The Role Of Hospice Interdisciplinary Team Members, Jillian A. Tullis Owen

USF Tampa Graduate Theses and Dissertations

Hospices use interdisciplinary teams to aid patients and families as they cope with the imminence of death while helping them achieve a death free of physical and spiritual pain, also known as a good death. This study investigated the communication between hospice team members and their patients regarding spirituality, dying, death and a good death. Through 300 hours of participant observation and interviews with hospice staff at one large not-for-profit hospice in the Southeastern United States this project shows that team members understand patient's spirituality through a religious frame potentially compromising spiritual care. Talk between patients and their care …

Praxis And Theōria: Heidegger’S “Violent” Interpretation, Megan E. Altman

USF Tampa Graduate Theses and Dissertations

This paper attempts to mark out new ground in the connections between the philosophical writings of Martin Heidegger and Aristotle by posing an interesting question that has never been addressed. Both writers devote much of their early thoughts to questions concerning human beings' practical ways of understanding. However, in their later thoughts Heidegger and Aristotle suddenly seem to completely change the subject to ideal or transcendental ways of understanding. At first glance these ideal modes of human apprehension seem to have nothing to do with each other. Yet, Heidegger and Aristotle seem to have similar motives for turning away from …

The Preference Of Protein Powders Among Adult Males And Females: A Protein Powder Taste Study, Joshua Manter

USF Tampa Graduate Theses and Dissertations

Protein is essential in one's diet because it is an important component in many organs and tissues throughout the body. Athletes ingest protein in order to stimulate protein synthesis and increase lean muscle mass. In order to assist with obtaining adequate amounts of protein, athletes and bodybuilders purchase supplemental protein in the form of protein powders. Protein metabolism and digestion play key roles in this because if the protein is not metabolized or digested effectively, then those who are wishing to gain fat free mass will not be successful. A high quality protein will be digested, metabolized, and directed towards …

Examining The Title X Family Planning Program’S (Public Law 91-572) Legislative History Through A Feminist Lens: A Thematic Analysis And Oral Histories With Key Stakeholders In Florida, Cheryl A. Vamos

USF Tampa Graduate Theses and Dissertations

The Title X Family Planning Program (Public Law 91-572), enacted by President Richard Nixon in 1970, provides federal funds for voluntary, confidential family planning services to all women, regardless of their age or economic status. This federal legislation aspired to prevent unintended pregnancies and poor birth outcomes to those in most need. However, over the past three decades, Title X has faced political, financial and social challenges. Despite its enormous success in improving the health and well-being of women and children by decreasing unintended pregnancies, the need for abortions and providing key comprehensive preventive services, without a newfound political will …

Digging It: A Participatory Ethnography Of The Experiences At A School Garden, Branimir Cvetkovic

USF Tampa Graduate Theses and Dissertations

This case study of a school garden focuses on concepts of community that are fostered and embodied at this setting. By utilizing participatory ethnographic methodologies, this research explored gemeinschaft and gesellschaft concepts of community. Data reveals that students are able to learn mastery, belonging, generosity and independence while participating in the garden work. Teachers manage students who attempt to challenge the boundaries of this community by utilizing and ethic of care which allows teachers to de-emphasize authority and to first consider the networks of relationships and how to mend and improve them. Students are able to experience governmentality and an …

“The Best We Can With What We Got”: Mediating Social And Cultural Capital In A Title I School, Jarin Rachel Eisenberg

USF Tampa Graduate Theses and Dissertations

This study examined teachers' perceptions and attitudes of Title I students at an urban elementary school in which over 90% of the student population receives free or reduced-priced lunch. Using participant observation and in-depth interviews, this research analyzed three avenues for Title I students to acquire cultural and social capital at school: material and non-material resources, language acquisition, and the building of positive teacher-student relationships. In order to analyze these avenues, this study explored the following questions: How do teachers talk about and perceive Title I students? Do their attitudes and the images constructed from these perceptions impact students' ability …

Can Colored Dissolved Organic Material Protect Coral Reefs By Reducing Exposure To Ultraviolet Radiation?, Lore Michele Ayoub

USF Tampa Graduate Theses and Dissertations

Although mass coral bleaching events are generally triggered by high seawater temperatures, experiments have demonstrated that corals and reef-dwelling foraminifers bleach more readily when exposed to high energy, short wavelength solar radiation (blue, violet and ultraviolet [UVR]: Lambda ~ 280 - 490 nm). In seawater, colored dissolved organic matter (CDOM), also called gelbstoff, preferentially absorbs these shorter wavelengths, which consequently bleach and degrade the CDOM. Alteration of watersheds and destruction of coastal wetlands have reduced natural sources of CDOM to reefal waters.

I tested the null hypothesis that CDOM does not differ between reefs that differ in coral health, …

Perspectives On Reclaimed Water Among Urban Residents In Tampa, Florida, Jonathan Max Bloch

USF Tampa Graduate Theses and Dissertations

Increasing urbanization coupled with increased domestic and industrial uses of water has made water conservation an important aspect of environmental management. Reclamation of wastewater is one way in which such conservation can proceed, and the aim of this thesis is to provide a case study about the perspectives of residents and officials involved in the use of reclaimed water in an urban development in Tampa, Florida. Using semi-structured interviews, it seeks to understand the range of opinions on the safety of reclaimed water, its potential prospects as an alternative drinking water supply, and its contribution to the sustainable use of …

Leaching Of Active Ingredients From Blueberries And Cranberries Using Supercritical Carbon Dioxide And Ethanol As An Entrainer And Analyzing Using Gc/Ms, Nada H. Elsayed

USF Tampa Graduate Theses and Dissertations

Routine consumption of blueberries and cranberries has been shown to have great health benefits. Blueberries have high amounts of anthocyanin content per serving. Anthocyanins are known to be powerful antioxidants and are linked to the reduction of heart disease and cancer. New research suggests that the berries may also play a role in slowing down age related diseases such as memory loss and tissue damage caused by Alzheimer's. In addition the berries have a variety of essential vitamins and minerals that are important for overall health. Cranberries have long been used to treat urinary tract infections due to the high …

Work-Family Conflict, Eating Behaviors, And The Role Of Coping, Ashley G. Walvoord

USF Tampa Graduate Theses and Dissertations

There were two primary aims of the present study. The first aim was to examine the relationships between work-interference-with-family (WIF) and specific eating behaviors (eating vegetables, fruits, snack foods) reported by employed mothers, as it relates to health criteria such as BMI. Related to this first aim, household coping strategies were proposed as playing a significant role in the relationship between WIF and eating behaviors. The second aim was to investigate the crossover of WIF to specific child eating behaviors via mother feeding practices or mother eating behaviors.

Self-report and other-report survey data were collected from working mothers and their …

Southern Black Women: Their Lived Realities, Robin M. Boylorn

USF Tampa Graduate Theses and Dissertations

Focusing on the lived experiences of ten rural black women in a familial community in central North Carolina, this project documents the mundane and extraordinary events of their lives and how they create meaningful lives through storytelling. Theoretically grounded in black feminist thought, intersectionality theory and muted group theory the investigation calls for the use of storytelling and poetry to understand how rural black women experience, live, and communicate their lives. Merging the experiences of participants with the researcher, the study also considers the ethical implications of being an insider-outsider and offers suggestions for engaging in creative scholarship. The author …

Afro-Colombian Welfare: An Application Of Amartya Sen’S Capability Approach Using Multiple Indicators Multiple Causes Modeling – Mimic, Paula Lezama

USF Tampa Graduate Theses and Dissertations

This research analyzes welfare conditions of Afro-Colombians vis-à-vis non Afro-Colombians using Amartya Sen's Capability Approach as the theoretical framework, and the latent variable modeling as the empirical method. Multiple Indicators Multiple Causes (MIMIC) models are estimated using data from the Colombian Quality of Life Survey, 2003. Two latent constructs, namely, 'knowledge' and 'being adequately sheltered', represent the two 'Capability' dimensions to be analyzed. Ethnic background appears to have a consistently negative influence after controlling statistically by a set of relevant variables (e.g. being poor, area, marital status, age and gender, among others) included in the models as exogenous "causes" or …

The Political Ecology Of Intestinal Parasites Among Nicaraguan Immigrants In Monteverde, Costa Rica, Jason D. Lind

USF Tampa Graduate Theses and Dissertations

Over the past 15 years Monteverde, Costa Rica has undergone rapid economic, social, political, and environmental change due to a flourishing ecotourism economy. While the effects of ecotourism development in Monteverde are many, two important consequences have been: 1) the immigration of Nicaraguan nationals to the area seeking low-skilled wage labor; and 2) compromised water resources management due to pollution and rapid population growth. The objective of this research is to investigate and identify the inter-relationships between ecotourism development in Monteverde and its affect on infectious diseases outcomes within the context of immigration and water resources management. Specifically, this dissertation …

Maternal Knowledge, Attitudes And Practices And Health Outcomes Of Their Preschool-Age Children In Urban And Rural Karnataka, India, Angela Lloyd

USF Tampa Graduate Theses and Dissertations

This cross-sectional, community-based study was designed to compare the health outcomes of 2 - 5 year-old children in different types of preschools. The Integrated Child Development Services (ICDS), run by the government of India, created a system of preschools, called anganwadis, to combat malnutrition, provide health education for mothers, and preschool for children 2 - 6 years old in 1975. Many children attend their local anganwadis, while others attend private schools, and others do not attend school at all. A pre-tested questionnaire was used to interview 125 urban and 130 rural mothers regarding their knowledge, attitudes, and practices about acute …

Cardiovascular Risk Factors For Mild Cognitive Impairment, Michael Malek-Ahmadi

USF Tampa Graduate Theses and Dissertations

The relationship between cardiovascular conditions and the presence of Alzheimer's disease (AD) has been well-documented in a number of recent studies. Generally, the presence of cardiovascular conditions such as high total cholesterol and hypertension have been shown to significantly increase the risk for the development of AD. Given the results of these studies, it is possible that these same risk factors might also increase the risk of developing mild cognitive impairment (MCI). An analysis of 216 subjects (119 cognitively normal (CN), 77 aMCI, 20 naMCI) found that after adjusting for age, education, ethnicity, and gender, only hemoglobin A1c (HbA1c) showed …

Functional Characterization Of Cytochrome B5 Reductase And Its Electron Acceptor Cytochrome B5 In Plasmodium Falciparum, Lucio Malvisi

USF Tampa Graduate Theses and Dissertations

Malaria is a disease of major public health importance, killing approximately one million people and causing about 250 million cases of fever annually. It mostly affects children under the age of five and pregnant women in many developing countries, making it a prominent issue in international health and maternal and child health. The most aggressive form of malaria is caused by the parasite Plasmodium falciparum which is responsible for 80% of infections and 90% of deaths from malaria, and is most prevalent in sub-Saharan Africa. Public Health interventions include the implementation of prevention programs, health education, and chemotherapy. The latter …

Trophic Enrichment Patterns Of Δ13C In Organic Matter Of Molluscan Shell: Implications For Reconstructing Ancient Environments And Food Webs, Julie Mcknight

USF Tampa Graduate Theses and Dissertations

Shell organic matrix proteins in fossils are valuable geochemical archives for studying ancient environments and food webs. Compound-specific studies of stable carbon isotope ratios offer particularly good resolution of trophic level of consumers and the identities of primary producers and can be used to detect diagenetic alteration of isotopic ratios. To interpret compound specific isotope data, however, controlled diet studies in the laboratory are needed to reveal trophic enrichment patterns of ¹³C in tissues and shell organic matter.

This study examines the relationship between δ¹³C of 11 amino acids in diet, soft tissues, and shell organic matter …

Data Acquisition For Modeling And Visualization Of Vascular Tree, William Lafayette Mondy

USF Tampa Graduate Theses and Dissertations

Data can be acquired from tissue's vascular structure and used for modeling and visualization. To acquire data from a vascular tree, we make its structure available for the gathering of data by separating it from the structures of surrounding tissues, which includes the capillary structure. The capillary structure contains important information, but, because of its size, is the most difficult to acquire data from. In this work, we look at methods for contrasting the vascular structure from surrounding tissues, and focus on the use of corrosion casting for this procedure. We collected image data using micro-computer tomography (micro-CT) and converted …

Particulate Carbon, Nitrogen And Phosphorus Stoichiometry Of South West Florida Waters, Susan Mary Murasko

USF Tampa Graduate Theses and Dissertations

The southwestern Florida shelf marine environment has often been characterized as oligotrophic, yet these waters can support large, high biomass, persistent phytoplankton blooms, including blooms of the toxin producing dinoflagellate Karenia brevis. Little is known regarding which major nutrient potentially limits primary production in these waters as both inorganic nitrogen and phosphorus concentrations are often near the limits of analytical detection and it is difficult to estimate what percentage of the dissolved organic pool is available for phytoplankton uptake. To assess the nutrient status of phytoplankton populations on the southwest Florida shelf, this project examines the particulate nutrient stoichiometry of …

Cocrystals Of Nutraceuticals: Protocatechuic Acid And Quercetin, Twarita Anil Pujari

USF Tampa Graduate Theses and Dissertations

The cocrystallization of two or more pure compounds by crystal engineering to create a new functional material is of a great academic and industrial interest. Pharmaceutical cocrystallization has allured a lot of attention by means of altering the physicochemical properties of Active Pharmaceutical Ingredient (API) such as solubility, stability and bioavailability. Crystal engineering of nutraceuticals can produce novel compounds such as pharmaceutical cocrystals. To establish the importance of nutraceutical cocrystallization and its use; polyphenols, a major class of nutraceuticals and potential disease preventing agents, are the appropriate targets. The work herein focuses on two polyphenols, protocatechuic acid and quercetin, which …

Linking Health Hazards And Environmental Justice: A Case Study In Houston, Texas, Marilyn Marie Williams

USF Tampa Graduate Theses and Dissertations

This dissertation seeks to extend quantitative research on environmental justice and address methodological limitations of previous studies by: (a) using new indicators of exposure to air pollution and contemporary risk modeling techniques; (b) assessing disparities in human health risks, instead of focusing only on potential exposure or proximity to pollution sources; and (c) using multivariate regression models that consider the effects of spatial dependence. The case study examines racial/ethnic and socioeconomic disparities in the geographic distribution of exposure to airborne toxic emissions from industrial point sources in the Houston-Galveston-Brazoria metropolitan statistical area. Industrial pollution sources for this study comprise facilities …

From Cancer To Sexually Transmitted Infection: Explorations Of Social Stigma Among Cervical Cancer Survivors, Karen E. Dyer

USF Tampa Graduate Theses and Dissertations

This research project aims to examine the idea of stigma attached to cervical cancer in light of its association with HPV, a sexually transmitted infection (STI). The public recognition of this relationship appears to be increasing due to the current media attention surrounding HPV's causative role in the development of cervical cancer, and the newly-released HPV vaccine. Thus, this study explores the experiences and perceptions of cervical cancer patients and survivors living with this disease at a moment in time when it is becoming a very visible manifestation of a sexually transmitted infection, versus one identified historically as a life-threatening …