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Use Of Cerium Oxide Nanoparticles For Protection Against Radiation-Induced Cell Death, Jimmie Colon
Use Of Cerium Oxide Nanoparticles For Protection Against Radiation-Induced Cell Death, Jimmie Colon
Electronic Theses and Dissertations
The ability of engineered cerium oxide nanoparticles to confer radioprotection was examined. Rat astrocytes were treated with cerium oxide nanoparticles to a final concentration of 10 nanomolar, irradiated with a single 10 Gy dose of ionizing radiation and cell death was evaluated by propidium iodine uptake at 24 and 48 hours after radiation insult. Treatment of rat astrocytes with nanoceria resulted in an approximate 3-fold decrease in radiation induced death. These results suggest that the nanoceria are conferring protection from radiation induced cell death. Further experiments with human cells were conducted. Human normal and tumor cells (MCF-7 and CRL8798) were …
Bloodlines, Pamela Toner
Bloodlines, Pamela Toner
Electronic Theses and Dissertations
"Bloodlines" is a collection of personal essays that focus on the process of remembering, imagining, and reflecting on the past through the lens of a perpetually shifting present. They consider situations ranging from mental and physical illnesses, from cancer to alcohol addiction, to career changes, to the often dysfunctional and displaced family ties that distance and adulthood have not severed. In "Searching," I write the narrative of the ongoing search for my birthmother, and how the search complicates the relationship with my adoptive mother, who always feared she’d lose me. Similarly, "Of Flesh and Blood" recounts and negotiates how hereditary …
The Relationship Between Resiliency In Rural African American Male Youth And Their Awareness Of Citizenship Practices, Karen Judd
Electronic Theses and Dissertations
Effective citizenship practice in the United States has several important characteristics, which can provide the foundation for young people to access opportunity in employment and education. A continuum of policies, programs, and strategies meant to alleviate poverty have central themes of providing education and vocational opportunities, and yet large numbers of young minority people remain disenfranchised with no chance to succeed. There is even greater loss in the population of African American males who otherwise could achieve stable and strong economic life styles. Large unemployment and under-employment of African American males is documented through U.S. data sources where declining rates …
Silence, Absence, And Mystery In Linda Hogan's Mean Spirit, Solar Storms, And Power, Kathryn Erickson
Silence, Absence, And Mystery In Linda Hogan's Mean Spirit, Solar Storms, And Power, Kathryn Erickson
Electronic Theses and Dissertations
In Mean Spirit, Solar Storms, and Power, Linda Hogan uses the devices of silence, absence, and mystery to articulate the oppression and marginalization of Native Americans. Specifically, because of the environmental crises that produce conflict in each novel, the project benefits from ecocriticism, ecofeminism, and ecopsychology. Also, because of various interpretations that open up when silence is examined, theories of deconstruction strengthen the thesis. Ultimately, Hogan's characters move from silence as a form of tyranny to silence as a form of reconnection with tribal ways. As the characters discover pathways to native traditions, they also discover spiritual connections with the …
A Common Component-Based Software Architecture For Military And Commercial Pc-Based Virtual Simulation, Joshua Lewis
A Common Component-Based Software Architecture For Military And Commercial Pc-Based Virtual Simulation, Joshua Lewis
Electronic Theses and Dissertations
Commercially available military-themed virtual simulations have been developed and sold for entertainment since the beginning of the personal computing era. There exists an intense interest by various branches of the military to leverage the technological advances of the personal computing and video game industries to provide low cost military training. By nature of the content of the commercial military-themed virtual simulations, a large overlap has grown between the interests, resources, standards, and technology of the computer entertainment industry and military training branches. This research attempts to identify these commonalities with the purpose of systematically designing and evaluating a common component-based …
Characterization And Evaluation Of The Immunogenizity Of Chloroplast-Derived 19-Kilodalton C-Terminal Merozoite Surface Antigen 1 (Msp1) Of Plasmodium Yoelii Yoelii, Sushamadevi Kamarajugadda
Characterization And Evaluation Of The Immunogenizity Of Chloroplast-Derived 19-Kilodalton C-Terminal Merozoite Surface Antigen 1 (Msp1) Of Plasmodium Yoelii Yoelii, Sushamadevi Kamarajugadda
Electronic Theses and Dissertations
Malaria is a protozoan disease caused in humans by four different species of the genus Plasmodium (P. falciparum, P. vivax, P. ovale, P. malarie) and in rodents by Plasmodium yoelii yoelii. It has been reported that 1.5 to 3 million deaths occur worldwide due to malaria and the DALY (Daily affected life years) reports about 0.76% of world population affected by the disease in some of the major countries like Africa, Asia, Latin America etc., Due to the development of resistance to drugs by the parasite, there is an urgent need and prime importance for the development of an effective …
Study Of Low Speed Transitional Regime Gas Flows In Microchannels Using Information Preservation (Ip) Method, Umit Kursun
Study Of Low Speed Transitional Regime Gas Flows In Microchannels Using Information Preservation (Ip) Method, Umit Kursun
Electronic Theses and Dissertations
Proper design of thermal management solutions for future nano-scale electronics or photonics will require knowledge of flow and transport through micron-scale ducts. As in the macro-scale conventional counterparts, such micron-scale flow systems would require robust simulation tools for early-stage design iterations. It can be envisioned that an ideal Nanoscale thermal management (NSTM) solution will involve two-phase flow, liquid flow and gas flow. This study focuses on numerical simulation gas flow in microchannels as a fundamental thermal management technique in any future NSTM solution. A wellknown particle-based method, Direct Simulation Monte Carlo (DSMC) is selected as the simulation tool. Unlike continuum …
Near-Infrared Observations Of Comet-Asteroid Transition Objects, Julie Elaine Ziffer
Near-Infrared Observations Of Comet-Asteroid Transition Objects, Julie Elaine Ziffer
Electronic Theses and Dissertations
The primary objective of this research is to characterize the surface composition of five comet-asteroid transition objects via near-infrared spectroscopy. The five targets include two asteroids with Tisserand invariants lower than 3.0 (1373 Cincinnati and 2906 Caltech), one asteroid that is likely an extinct comet (944 Hidalgo), one intermittent activity comet (162P/Siding Spring), and one nearly dormant comet (28P/Neujmin1). Previous research regarding cometary end states and dynamical and physical properties of comets and asteroids provides the foundation for this work. Focusing primarily on the 1-2.5 µm spectral region of the five target objects, this project specifically searches for mineral species …
Expression Of Heterologous Proteins In Transgenic Tobacco Chloroplasts To Produce A Biopharmaceutical And Biopolymer, Andrew Leon Devine
Expression Of Heterologous Proteins In Transgenic Tobacco Chloroplasts To Produce A Biopharmaceutical And Biopolymer, Andrew Leon Devine
Electronic Theses and Dissertations
The chloroplast has been demonstrated to be an ideal compartment to accumulate certain proteins or their biosynthetic products that would be harmful if they were accumulated in the cytoplasm. Hyper-expression of foreign proteins in chloroplast transgenics has accumulated up to 46% total soluble protein, this is possible due to the ~100 chloroplast genomes per chloroplast and ~100 chloroplasts per cell which can therefore, contain up to 10,000 copies of the transgene. Maternal gene inheritance of plastids in most crop plants results in natural gene containment. Chloroplast transformation also eliminates positional effects that are frequently observed with nuclear transformation and no …
Design And Performance Evaluation Of An Integrated Miniature Single Stage Centrifugal Compressor And Permanent Magnet Synchronous Motor, Dipjyoti Acharya
Design And Performance Evaluation Of An Integrated Miniature Single Stage Centrifugal Compressor And Permanent Magnet Synchronous Motor, Dipjyoti Acharya
Electronic Theses and Dissertations
An attempt has been made in this present work to design, fabricate and performance evaluate an integrated single stage centrifugal compressor and permanent magnet synchronous motor which is a key component of the reverse brayton cycle cryocooler. An off the shelf compressor – the driven and electric motor – the driver was not available commercially to suffice the requirements of the reverse brayton cryocooler. The integrated compressor-motor system was designed and tested with air as the working fluid at mass flow rate of 7.3 grams per sec, with a compression ratio of 1.58 and driven by a 2 KW permanent …
Computer-Based Instructional Systems Design Tools: Current State And Implications For The Future, Anna A. Andrews
Computer-Based Instructional Systems Design Tools: Current State And Implications For The Future, Anna A. Andrews
Electronic Theses and Dissertations
This study examines the current state of computer-based instructional systems design (ISD) tools and outlines its implications for the future. The study utilizes the grounded theory methodology to capture and document modern instructional designers' perspectives regarding the current state of ISD tools, the issues associated with them, and their interrelationships. The study also presents a framework for classifying modern ISD tools and a conceptual prototype of a designer-oriented system of computer-based ISD tools.
Electrical Properties Of Reactive Magnetron Sputtered Vanadium Oxide Thin Films, Vu Huynh Lam
Electrical Properties Of Reactive Magnetron Sputtered Vanadium Oxide Thin Films, Vu Huynh Lam
Electronic Theses and Dissertations
It is well known that vanadium oxide can take many different forms. However for this study, only the amorphous phase was investigated. Amorphous vanadium oxide (VOx) thin films were deposited on thermally grown silicon dioxide by DC magnetron sputtering using a vanadium metal target in an argon / oxygen atmosphere. The driving force of this study was to investigate the temperature coefficient of resistance (TCR) and low resistivity in the amorphous films. Sheet resistance is very sensitive to small changes in temperature, making amorphous VOx very attractive to thermal sensor applications such as infrared detectors. To form the vanadium oxide, …
Commissioning Of A Dynamic Mechanical Analyzerfor The Characterization Of Low Temperature Nitife Shape Memory Alloys, Maruthi Diwakar Nandiraju
Commissioning Of A Dynamic Mechanical Analyzerfor The Characterization Of Low Temperature Nitife Shape Memory Alloys, Maruthi Diwakar Nandiraju
Electronic Theses and Dissertations
NiTiFe shape memory alloys can undergo transformations between cubic, trigonal and monoclinic phases at low temperatures. The low hysteresis associated with the trigonal R-phase transformation make them candidates for actuator applications at low temperatures. However, the literature available on these alloys is limited and there is a need to establish processing structure-property correlations. This study was undertaken with the objective of determining and understanding such correlations in a Ni46.8Ti50Fe3.2 alloy. First, a dynamic mechanical analyzer (DMA) was successfully commissioned to facilitate mechanical testing between -150 and 600ºC. The experiments performed over selected ranges of stress and temperature probed a range …
Classroom Observation Of Children With Adhd And Their Peers: A Meta-Analytic Review, Michael Kofler
Classroom Observation Of Children With Adhd And Their Peers: A Meta-Analytic Review, Michael Kofler
Electronic Theses and Dissertations
Meta-analysis of 23 between-group direct observation studies of children with ADHD and typically developing peers indicates significant deficiencies in children with ADHD's ability to pay attention in classroom settings. Comparison with 59 single case design studies of children with ADHD suggests generalizability of between-group comparisons. Weighted regression analysis determined that several methodological differences sample characteristics, diagnostic procedures, and observational coding schema have significant effects on observed levels of attentive behavior in the classroom. Best case estimation indicates that after accounting for these factors, children with ADHD are on-task approximately 65% of the time compared to 85% for their …
Truly Non Invasive Glucose Optical Sensor Based On Metal Nanoparticles Generation, Marisol Garcia
Truly Non Invasive Glucose Optical Sensor Based On Metal Nanoparticles Generation, Marisol Garcia
Electronic Theses and Dissertations
Diabetes is a disease that causes many complications in human normal function. This disease represents the sixth-leading cause of death in USA. Prevention of diabetes-related complications can be accomplished through tight control of glucose levels in blood. In the last decades many different glucose sensors have been developed, however, none of them are really non invasive. Herein, we present the study of the application of gold and silver nanoparticles with different shapes and aspect ratios to detect glucose traces in human fluids such as tears and sweat. This is to our knowledge the first truly non invasive glucose optical sensor, …
Rapitalism, Martin Smith
Rapitalism, Martin Smith
Electronic Theses and Dissertations
My paper questions the degree to which the hip hop subculture is oppositional to mainstream American society and its ideals. Toward that end, I examine the structure of the hip hop industry and its subculture. While the hip hop subculture in America consistently has projected images of rebellion and resistance to many of the mores, constraints and values of dominant society, the actual structure and organization of the hip hop subculture have mirrored, supported and promoted the values of the dominant culture in the United States. I begin by examining the structure of the main elements of the hip hop …
College Students' Recall Of And Attitudes Toward Brand Placement In Reality Television Programming, Temitayo Fayemi
College Students' Recall Of And Attitudes Toward Brand Placement In Reality Television Programming, Temitayo Fayemi
Electronic Theses and Dissertations
This thesis measures college students' attitudes toward, and the effectiveness of, brand placement in the genre of reality television. Surveys were used to discover the level of brand recall for the products and brands displayed in reality television programming and to discover viewers' reported reasons for paying attention to these brands. The study found that viewers tended to have positive attitudes toward brand placement in reality television and that focus on a brand was a major reason for recall. Furthermore, the study found no significant difference in the recall scores of reality television viewers versus non-viewers and no significant difference …
Analysis Of Complexity And Coupling Metrics Of Subsystems In Large Scale Software Systems, Harish Ramakrishnan
Analysis Of Complexity And Coupling Metrics Of Subsystems In Large Scale Software Systems, Harish Ramakrishnan
Electronic Theses and Dissertations
Dealing with the complexity of large-scale systems can be a challenge for even the most experienced software architects and developers. Large-scale software systems can contain millions of elements, which interact to achieve the system functionality. Managing and representing the complexity involved in the interaction of these elements is a difficult task. We propose an approach for analyzing the reusability, maintainability and complexity of such a complex large-scale software system. Reducing the dependencies between the subsystems increase the reusability and decrease the efforts needed to maintain the system thus reducing the complexity of the system. Coupling is an attribute that summarizes …
Limnological And Landscape Factors Affecting Use Of Manufactured Ponds By The Invasive Cuban Treefrog (Osteopilus Septentrionalis), Terina Nusinov
Limnological And Landscape Factors Affecting Use Of Manufactured Ponds By The Invasive Cuban Treefrog (Osteopilus Septentrionalis), Terina Nusinov
Electronic Theses and Dissertations
Exotic amphibians are often detrimental to native biotas. In Florida, the exotic Cuban Treefrog (Osteopilus septentrionalis) eats native frogs and may outcompete them for resources. Cuban Treefrogs thrive in disturbed areas and around buildings, and often breed in manufactured wetlands such as retention ponds and borrow pits. This study identified limnological, landscape, and biotic characteristics that discouraged pond use by Cuban Treefrogs and promoted use by native amphibian species. I sampled natural and manufactured ponds in Orange County, Florida, for one year, using standard methods to estimate the species richness and relative abundance of amphibians and their potential fish and …
Analysis, Modeling, And Simulation Of The Tides In The Loxahatchee River Estuary (Southeastern Florida)., Peter Bacopoulos
Analysis, Modeling, And Simulation Of The Tides In The Loxahatchee River Estuary (Southeastern Florida)., Peter Bacopoulos
Electronic Theses and Dissertations
Recent cooperative efforts between the University of Central Florida, the Florida Department of Environmental Protection, and the South Florida Water Management District explore the development of a two-dimensional, depth-integrated tidal model for the Loxahatchee River estuary (Southeastern Florida). Employing a large-domain approach (i.e., the Western North Atlantic Tidal model domain), two-dimensional tidal flows within the Loxahatchee River estuary are reproduced to provide: 1) recommendations for the domain extent of an integrated, surface/groundwater, three-dimensional model; 2) nearshore, harmonically decomposed, tidal elevation boundary conditions. Tidal simulations are performed using a two-dimensional, depth-integrated, finite element-based code for coastal and ocean circulation, ADCIRC-2DDI. Multiple …
The Effect Of Job Strain In The Hospital Environment: Applying Orem's Theory Of Self Care, Diane Andrews
The Effect Of Job Strain In The Hospital Environment: Applying Orem's Theory Of Self Care, Diane Andrews
Electronic Theses and Dissertations
The purpose of this research was to evaluate the causal relationships between job strain, the practice environment and the use of coping skills in order to assist in the prediction of nurses who are at risk for voluntary turnover. It was conducted at the level of the individual nurse employee in order to better understand the health consequences associated with job strain, the factors in the professional practice environment which may contribute to the propensity to leave and the influence of coping behaviors in response to workplace stressors. It was undertaken with the intention of identifying intervention strategies which will …
Automated Adaptive Data Center Generation For Meshless Methods, Eric Mitteff
Automated Adaptive Data Center Generation For Meshless Methods, Eric Mitteff
Electronic Theses and Dissertations
Meshless methods have recently received much attention but are yet to reach their full potential as the required problem setup (i.e. collocation point distribution) is still significant and far from automated. The distribution of points still closely resembles the nodes of finite volume-type meshes and the free parameter, c, of the radial-basis expansion functions (RBF) still must be tailored specifically to a problem. The localized meshless collocation method investigated requires a local influence region, or topology, used as the expansion medium to produce the required field derivatives. Tests have shown a regular cartesian point distribution produces optimal results, however, in …
Challenging A Traditional Social Norm In A Second Grade Mathematics Classroom, Lisa Egendoerfer
Challenging A Traditional Social Norm In A Second Grade Mathematics Classroom, Lisa Egendoerfer
Electronic Theses and Dissertations
In an attempt to examine classroom dialogue within a second grade classroom, I encouraged students to participate in mathematics discussions without needing to raise their hands before speaking. I challenged this traditional social norm and established sociomathematical norms as the study progressed. My study showed the effects of this change on the dialogue of students in my classroom. Focus was placed on the participation in classroom discussions when traditional social and sociomathematical norms were in place as well as when new norms were established. The study helped determine the effects of student-centered dialogue on conceptual understanding as demonstrated in the …
Novel Conceptual Design And Anlysis Of Polymer Derived Ceramic Mems Sensors For Gas Turbine Environment, Narasimha Nagaiah
Novel Conceptual Design And Anlysis Of Polymer Derived Ceramic Mems Sensors For Gas Turbine Environment, Narasimha Nagaiah
Electronic Theses and Dissertations
Technical challenges for developing micro sensors for Ultra High Temperature and turbine applications lie in that the sensors have to survive extremely harsh working conditions that exist when converting fuel to energy. These conditions include high temperatures (500-1500°C), elevated pressures (200-400 psi), pressure oscillations, corrosive environments (oxidizing conditions, gaseous alkali, and water vapors), surface coating or fouling, and high particulate loading. Several technologies are currently underdeveloped for measuring these parameters in turbine engines. One of them is an optical-based non-contact technology. However, these nondirective measuring technologies lack the necessary accuracy, at least at present state. An alternative way to measure …
Polymer-Derived Si-Al-C-N Ceramics:Oxidation, Hot-Corrosion, And Structural Evolution, Yiguang Wang
Polymer-Derived Si-Al-C-N Ceramics:Oxidation, Hot-Corrosion, And Structural Evolution, Yiguang Wang
Electronic Theses and Dissertations
Polymer-derived ceramics are a new class of materials synthesized by thermal decomposition of polymer precursors. Previous studies have shown that the materials exhibit excellent thermo-mechanical properties and can be stable at temperatures up to 2000oC. Furthermore, the novel polymer-to-ceramics process enables the manipulation of the ceramic structures at the atomic/nano level by designing the chemistry of polymer precursors and controlling the pyrolysis conditions, thereby, the properties of ceramics. In this dissertation, oxidation/hot-corrosion behavior and the structural evolution of Si-Al-C-N ceramics have been studied. The structural evolution and crystallization behavior of the SiCN and SiAlCN ceramics are investigated using FT-IR, XRD, …
Anton Chekhov:The Characterization And Interpretationof A Historical Figure For The Stage, Alan Gallant
Anton Chekhov:The Characterization And Interpretationof A Historical Figure For The Stage, Alan Gallant
Electronic Theses and Dissertations
This thesis will explore the execution of the monograph role of "Anton Chekhov" in the original one-act play, An Evening with Anton Chekhov. The play script, rehearsal and public performances of the piece are all self- generated by the candidate, with the proper assistance of the thesis committee. This written thesis serves as the completion of the thesis project, and includes analysis of several key areas of the development of the script and thesis role. This document includes the original script with endnotes and a structural analysis. Social and historical background of the character, Anton Chekhov, a real person, is …
A Mathematical Study Of Malaria Models Of Ross And Ngwa, William Plemmons
A Mathematical Study Of Malaria Models Of Ross And Ngwa, William Plemmons
Electronic Theses and Dissertations
Malaria is a vector borne disease that has been plaguing mankind since before recorded history. The disease is carried by three subspecies of mosquitoes Anopheles gambiae, Anopheles arabiensis and Anopheles funestu. These mosquitoes carry one of four type of Plasmodium specifically: P. falciparum, P. vivax, P. malariae or P. ovale. The disease is a killer; the World Health Organization (WHO) estimates that about 40% of the world's total populations live in areas where malaria is an endemic disease and as global warming occurs, endemic malaria will spread to more areas. The malaria parasite kills a child every 30 seconds. In …
Variation Of Geotechnical Strength Properties With Age Of Landfills Accepting Biosolids, Kishore Pinapati
Variation Of Geotechnical Strength Properties With Age Of Landfills Accepting Biosolids, Kishore Pinapati
Electronic Theses and Dissertations
The solid portion of waste disposal, known as Municipal Solid Waste (MSW) can be landfilled. Landfilling has proved to be a safe, sanitary and economical method of disposal. A by-product from wastewater treatment plants called biosolids is sometimes co-disposed along with MSW in landfills. Recent work at the University of Central Florida has focused on the behavior of the mixture of MSW and biosolids. As an increased amount of waste accumulates in these landfills, it creates a new problem the geotechnical stability of landfills. In current literature, classical geotechnical testing methods have been followed to find the strength properties …
Nonprofit Board Effectiveness, Funding Source,And Financial Vulnerability, Matthew Hodge
Nonprofit Board Effectiveness, Funding Source,And Financial Vulnerability, Matthew Hodge
Electronic Theses and Dissertations
Nonprofit organizations rely heavily on their governing board of directors to provide leadership, strategic guidance, and financial oversight. The nonprofit community continues to grow, and the services provided by these organizations have become a critical part of our society, providing a wide variety of services targeting a diverse population. In this context, how the role of the board of directors impacts the financial position of the nonprofit organization is of great interest to both the academic community and the practitioner. This study examined three areas of interest: board effectiveness, funding source, and financial vulnerability. First, the association between board effectiveness …
Genetically Engineered Adaptive Resonance Theory (Art) Neural Network Architectures, Ahmad Al-Daraiseh
Genetically Engineered Adaptive Resonance Theory (Art) Neural Network Architectures, Ahmad Al-Daraiseh
Electronic Theses and Dissertations
Fuzzy ARTMAP (FAM) is currently considered to be one of the premier neural network architectures in solving classification problems. One of the limitations of Fuzzy ARTMAP that has been extensively reported in the literature is the category proliferation problem. That is Fuzzy ARTMAP has the tendency of increasing its network size, as it is confronted with more and more data, especially if the data is of noisy and/or overlapping nature. To remedy this problem a number of researchers have designed modifications to the training phase of Fuzzy ARTMAP that had the beneficial effect of reducing this phenomenon. In this thesis …