Digital Commons Network^™

Bindweed And Fire, Joshua Lee Davis

Electronic Theses and Dissertations

Bindweed and Fire is a collection of poems in three sections. The first two sections, Drought and Watermarks, contain short metrical lyrics built around images of fire and water. Sabbath, the third section is a long free-verse poetic sequence in three voices. In ekphrastic poems rich with private symbolism, the first voice attempts to refract through the prism of visual art the relationship between a father and son. Providing a counterpoint to the first, the second voice seeks to qualify, correct, and comment on the private symbolism. The third voice tries to give a wider view of the everyday lives …

Room Temperature Ionic Liquid (Rtil) Membranes For Bio-Methane Dehumidification, Ryan Amos

Electronic Theses and Dissertations

Renewable fuels are heavily researched due to the increasing price of and resulting pollution from fossil fuels. The production of useable energy from waste—animal, sewage, discarded food, landfill matter would be a valuable renewable fuel production method. Biogas is a renewable fuel that is produced by anaerobic digestion, composed mainly of methane, carbon dioxide and small percentages of hydrogen sulfide and water vapor. Before this biogas—predominately bio-methane—can be converted to fuel, it must be dehumidified to become useable. Typically membrane-based gas dehumidification uses hydrophilic polymer membrane materials, such as polydimethylsiloxane (PDMS) and cellulose acetate (CA). The main problems with polymer …

Synthesis And Characterization Of Nickel Complexes With Relevance To Nickel Acireductone Dioxygenase And Nickel Superoxide Dismutase, Margo Nicole Montgomery

Electronic Theses and Dissertations

This research presents an investigation of synthetic model complexes with relevance to the active site of Ni(II) acireductone dioxygenase (Ni-ARD) and Ni(II) superoxide dismutase (Ni-SOD). Acireductone dioxygenases (ARDs) are a unique set of enzymes found in the methionine salvage pathway that catalyze the oxidation reaction of acireductone (1, 2-dihydroxy-3-oxo-5-(methylthio)pent-1-ene). These enzymes share a compolypeptide sequence but bind different metal ions, Ni2+ or Fe2+, at the active site. The Ni-ARD enzyme is responsible for the off pathway shunt in the pathway. Using the tridentate nitrogen donor ligands hydrotris(3,5-dimethyl-1-pyrazolyl)borate (Tp*) and the newly developed tris(1, 2-dimethyl-4-imadozyl)carbinol, (4-TICMe, Me) several reactions involving the …

Masculinity In Comparative Black Literatures, Latoya Renee Jefferson

Electronic Theses and Dissertations

This project examines the ways in which Black men in Africa and throughout the African Diaspora define themselves as gendered beings in their fiction and drama beginning with Richard Wright's publication of Native Son in 1940 to Mariama Ba's So Long a Letter published 1980. Black men created a transnational dialectic concerning their masculinity which involved the creation and criticism of several types of masculinity. In Chapters 1 and 2, I discuss the theoretical and the historical framework for this project. In Chapter 3, I discuss the first type of Black masculinity which was based in opposition to Euro-American stereotypes …

Functional Studies Of Novel Bioactives From Complex Host-Microbiomes As Drug Leads For Cancer, Infectious Disease, Depression And Pain, John Jason Bowling

Electronic Theses and Dissertations

The drug discovery process has become increasingly complex in comparison to early efforts particularly those involving diseases or conditions that affect large numbers of the human population. It is difficult to point directly to one factor leading evolution of the process but the definition of a mechanism of pharmacological action for a drug lead has noticeably become a higher priority. This evolution has helped diminish the stigma of natural products and compound supply issues. The issue of compound supply has also been addressed to some extent with the emergence of recombinant technologies and new synthetic methodology. With approximately 60 years …

Inspection Of Earthen Embankment Dams Using Time Lapse Electrical Resistivity Tomography, Jared Stewart Case

Electronic Theses and Dissertations

According to the National Inventory of Dams (NID), the number of dams across the United States is approximately 85,000. Many of these dams are more than 50 years old and need vast attention to ensure their safety. It is difficult to obtain a full assessment of the dam just by visual inspections alone. This is because many problems associated with dam failure occur internally, which makes it difficult to be observed by the dam inspectors. Examples of these flaws are piping and seepage (flow of water through or around dam walls). It is in this area where geophysical methods can …

Between God And Man: Community's Place In Virtue, Practical Reason, And Transcendent Good, Jordan Herz Davis

Electronic Theses and Dissertations

Talbot Brewer's Retrieval of Ethics and Robert Adams's Finite and Infinite Goods present distinct theories in ethics and metaethics. Brewer begins with the fundamental ethical perspective of the practical deliberator who experiences his practical deliberations as a continuous, unified, and constantly revised activity which begins with inchoate intimations of goodness and proceeds better or worse to understand and pursue the goodness which pervades his evaluative outlook. From this Brewer aims to account for how we achieve excellence in practical deliberation and arrive at a more tenable and self-consistent evaluative outlook which informs our ethical deliberations. Alternately, Adams begins in the …

Problems With Truth: Scope, Mixing, And Truth Pluralism, Christopher Dyer

Electronic Theses and Dissertations

In this paper, I will be taking up the debate between monistic and pluralistic inflationary theories of truth. Truth monism claims that there is one explanatory story which accounts for the truth of all and only true propositions. There seem to be, however, certain domains of discourse wherein monistic theories fail. If monistic theories cannot provide an explanation for how all true propositions are true, then they would not be adequate theories of truth. Truth pluralism is motivated to avoid the scope problem. The pluralist sees that there are as many truth properties as there are domains of discourse. A …

The Art Of Going Beyond In Hossana, Ethiopia, Megan Elizabeth Flowers

Electronic Theses and Dissertations

In this study, I examine what education as development means for the men and women who live in Hossana town, Ethiopia. The ethnographic focus of this study is on understanding how education as development evokes different meanings for socio-political participation by rural students at a teacher training college and townspeople respectively. I discuss these conceptual differentiations in relation to the changes in beliefs and strategies that have occurred in Hossana and greater Ethiopia elsewhere over the course of several decades of local and global changes in the social order. I use the emic category of yilhunnta, as the social recognition …

Synthesis And Evaluation Of Naturally Occuring Halogenated Bipyrroles In A Relevant Marine Species, Fundulus Heteroclitus, Kimberly Sheree Foster

Electronic Theses and Dissertations

Halogenated dimethyl-2-2'-bipyrroles (HDBPs) have recently been discovered in seabird eggs and have been shown to bioaccumulate in trophic organisms. HDBPs are suspected to be biogenic in nature, derived from evidence of marine natural products that are persistent in the environment and widespread in the Pacific and Atlantic Ocean. The HDBPs exhibit chlorinated and brominated substitution patterns that closely resemble anthropogenic pollutants like the polychlorinated biphenyls (PCBs), polybrominated biphenyls (PBBs), and polybrominated diphenyl ethers (PBDEs). Environmental health concerns exists regarding these naturally occurring HDBPs because several of these analogs were shown to induce the cytochrome P4501A (CYP1A) gene through activation of …

Two Trains Running: Capture And Escape In The Racialized Train Cars Of The Jim Crow South, 1893-1930, Raleigh Mixon Robinson

Electronic Theses and Dissertations

The role of the railroad in the modern American experience—and its role in making that experience modern—cannot be overstated. This thesis proposes to tell one of many possible railroad stories. By focusing on the historical and cultural relevance of a series of bodies in transit, I examine the implementation of railroad segregation law and the response by African-American performers. The thesis begins at the end of the nineteenth century with the Homer Plessy test case and continues across three decades, meeting along the way novelists Charles Chesnutt and James Weldon Johnson and musicians W. C. Handy, Henry "Ragtime Texas" Thomas, …

Finite Element Modeling Of Seismic Wave Propagation In Earthen Embankments, Binyam Tadese

Electronic Theses and Dissertations

The detection of internal seepage zones in embankments (dams and levees) by geophysical seismic techniques such as seismic refraction is limited by a number of factors. Some factors are associated with inversion and smoothing problems during processing, while others are associated with the natural characteristics of embankments and seepage anomalies. In this research, changes in the seismic response associated with: embankment soil compositions and moisture, characteristics of the seepage zone, presence of water in the reservoir, and shape of embankment was studied via 2D and 3D finite element (FE) embankment models. Artificial reflections from external boundaries and numerical dispersion were …

The Effect Of Exercise On Mechanical Pressure Pain Threshold In The Presence And Absence Of Delayed-Onset Muscle Soreness, Brandon Tynes

Electronic Theses and Dissertations

Research has shown decreased pain sensitivity (hypoalgesia) during and following maximal and sub-maximal isometric exercise (Koltyn, 2002). Research on fibromyalgia patients however has shown the same exercises increase pain sensitivity (hyperalgesia) (Staud, Robinson, & Price, 2005; Kosek, Ekholm, & Hansson, 1996). The purpose of the present study was to examine the effects of exercise on pressure pain thresholds (PPT) in the presence and absence of delayed-onset muscle soreness (DOMS) within the ipsilateral (contracting) and contralateral quadriceps muscle and plurisegmental finger. Data were collected using twenty-five male participants (aged 18-29) over five testing days: two days of familiarization, one day of …

Nothing Less Than An Activist: Marge Baroni, Catholicism, And The Natchez, Mississippi Civil Rights Movement, Eva Elizabeth Walton

Electronic Theses and Dissertations

This thesis is a religious and social history of the life of Natchez, Mississippi Catholic activist Marjorie R. Baroni (1924-1986). The study examines Baroni's Catholic faith-driven activism as a counter-narrative to the dominant Protestant narratives of religious motivations in the greater civil rights movement. In analyzing Baroni's story as a lived theological drama, I offer Baroni as a vessel for studying often overlooked Catholic influences in the movement: (1) The activist Catholic faith promoted by Dorothy Day and the Catholic Worker Movement (2) The effects of the more inclusive decrees of the Second Vatican Council (1962-1965) on the Catholic Church …

Isolation, Structure Elucidation And Biological Evaluation Of Natural Products From Plants And Fungi, Xiaoning Wang

Electronic Theses and Dissertations

Natural products have provided considerable value for drug discovery over the past half-century. Nearly four fifth of drugs were natural products or inspired by natural compounds. Bioactive secondary metabolites isolated from natural source, either fungal or terrestrial, are relatively safer for human health and the environment and can serve as drug or as drug leads for the development of synthetic or semi-synthetic analogs. Natural products have also been successfully used in agriculture as plant growth regulators, signal transductions, fungicides, herbicides and tranquilizers. In our continued efforts to identify bioactive compounds, seventy-seven plant and fungal extracts were evaluated using a direct-bioautography …

Antileishmania Compounds From An Unidentified Endophytic Fungus And Biotransformation Of 5,7,2`,4`,5`-Pentahydroxyflavonol, Ahmed Idris

Electronic Theses and Dissertations

Leishmaniasis is a parasitic disease remaining a major public health problem. It causes illness and death especially in developing countries. Comchemotherapeutic agents currently used are often inadequate, requiring long courses of parenteral administration, having toxic side effects or becoming less effective due to the emergence of resistant strains. Thus, there is an urgent need for new, effective, and inexpensive drugs. In the fight against leishmaniasis, natural products are important sources of novel therapeutic agents. The goal of our research is to study secondary metabolites from endophytic fungi as a source of effective antileishmanial agents. Many crude extracts from endophytic fungi …

Thermal And Photochemical Interaction Of Co2 With Biochar, Eneruvie Uyoyou Okinedo

Electronic Theses and Dissertations

With interest in the changes that may occur to the carbonaceous portion of biochar obtain through the pyrolysis of biomass, the simple interaction between CO2 and biochar with water or a mixture of water and ethanol as hydrogen donor resulted in three significant observations. These reactions were carried out thermally at 333K and photochemically by simulating energy from the with a xenon lamp. The photochemical reaction involving biochar, CO2 with water or a mixture of water and ethanol as hydrogen donor led to a decrease in oxygen content of the parent biochar material, as observed by an increase in the …

Geographic And Host-Microbe Symbiotic Influence On Secondary Metabolism, Samuel Hamed Abbas

Electronic Theses and Dissertations

This thesis is composed of studies that regard the advancement to the Arctic region and the importance of host-microbe interactions in natural product discovery. Bioactive metabolites have been reported from a myriad of marine and terrestrial organisms around the world including plants, insects, sponges, tunicates, bacteria, and fungi among others. Many macroorganisms, of which the metabolites are found, depend on the symbiotic relationship of microorganisms for metabolite production. The scope of this work is to investigate secondary metabolism of both marine and terrestrial organisms from different areas of the world as well as search for the importance of host-microbe symbiosis …

Bacterial And Sediment Transport In An Artificial Sand Bed Stream During Unsteady Flow, Mary Alexandra Mccaskill

Electronic Theses and Dissertations

Storms cause a substantial increase in the fecal indicator bacteria (FIB) concentrations in stream water. Causes for this concentration increase include FIB-laden stormwater runoff and the release of bacteria from stream-bottom sediments. Studies were carried out to quantify this second cause of water quality impairment. Coliform bacteria are a group of FIB, indicate the presence of pathogenic microorganisms, and have been shown to be transported in streams far from their source areas, especially during storms. FIB transport is dependent on several factors including water velocity, size and transport rates of bed sediments, and the FIB concentration in bed sediment. The …

Mississippi Breakdown: A New Look At The Mississippi Old Time Fiddle Music Traditions, Joseph Jamison Hollister

Electronic Theses and Dissertations

This is a cultural study that focuses on the fiddle music of Mississippi. It includes both Anglo and African American roots. Also, the white blues fiddle traditions of Mississippi are examined and analyzed.

Virtual Worlds And Conservational Channel Evolution And Pollutant Transport Systems (Concepts), Chenchutta Denaye Jackson

Electronic Theses and Dissertations

Many models exist that predict channel morphology. Channel morphology is defined as the change in geometric parameters of a river. Channel morphology is affected by many factors. Some of these factors are caused either by man or by nature. To combat the adverse effects that man and nature may cause to a water system, scientists and engineers develop stream rehabilitation plans. Stream rehabilitation as defined by Shields et al., states that "restoration is the return from a degraded ecosystem back to a close approximation of its remaining natural potential" [Shields et al., 2003]. Engineers construct plans that will restore streams …

Interpreting Material Cooperation As A Function Of Moral Development To Guide Ministry Formation, Steven Squires

Electronic Theses and Dissertations

While not exactly back room political bargaining, the traditional use of cooperation has been by moral theologians attempting to define the level of cooperation for a particular situation. This chosen definition, in turn, may help focus the range of appropriate actions in response to the situation's circumstances. In this customary usage, an organization's associates (employees) may assist the implementation of relevant responses to a cooperation analysis, whether the issue is clinical or organizational in nature. They have not been integral to the decision-making process - until now. Cooperation has been the proverbial candle under the bushel (Matthew 5:15). This paper …

The Effects Of A Violence Prevention Intervention On Prosocial Behavior And Perception Of School Safety, Cheon Carlon Graham

Electronic Theses and Dissertations

In order for schools to be successful in providing students with developmentally appropriate instruction and social experiences, an atmosphere of safety and protection is required. The recent spike in school shootings over the past 15 years has created a sense of urgency to examine the dynamics of school violence in order to generate and implement effective security measures (Brooks, Schiraldi, & Ziedenberg, 2000). Unlike traditional problem-focused approaches, the positive approach to school violence is preventive, solution-driven, and systemic. The positive approach to violence prevention at school focuses on building a set of social and emotional strengths that are incompatible with …

Beyond The Brandopolis: A Communicative Approach To City Promotion And Marketing, Kasey Clawson Hudak

Electronic Theses and Dissertations

A review of current city branding literature indicates that unsuccessful attempts at city branding appear to rely on creating static, flashy, and often idealized images of a city. Such marketing efforts may result in a "brandopolis," or images that may not reflect a city's true identity. This dissertation supplements current city branding literature by exploring how stakeholders' discourses form, enhance, and communicate a city's image. The consideration of a communicative approach to the promotion of city images, from a humanities perspective grounds stakeholders' experiences of the city in their communicative practices. This grounded communicative approach to city marketing offers marketers …

Using Virtual Worlds To Identify Multidimensional Student Engagement In High School Foreign Language Learning Classrooms, Laura Beth Jacob

Electronic Theses and Dissertations

Virtual world environments have evolved from object-oriented, text-based online games to complex three-dimensional immersive social spaces where the lines between reality and computer-generated begin to blur. Educators use virtual worlds to create engaging three-dimensional learning spaces for students, but the impact of virtual worlds in comparison to the traditional face-to-face counterpart has been uncertain in terms of multidimensional student engagement. Research has a need to determine the impact of virtual worlds on student engagement in comparison to the traditional face-to-face environment. The study examined the effects of virtual world and face-to-face learning environments on high school foreign language students' emotional, …

Theory Of Mind, Pragmatic Language, And Social Skills In Male Adolescents With Autism Spectrum Disorders, Gary Koch

Electronic Theses and Dissertations

Autism Spectrum Disorder (ASD) is characterized a core triad of symptoms: impaired social interaction, problems with verbal and nonverbal communication, and unusual, repetitive, or severely limited activities and interests (APA, 2000). Impairments in social development, however, have been considered the most salient and handicapping aspect of ASD and, traditionally, the primary deficit from which the diagnosis results. From a cognitive standpoint, it has been argued that these social impairments in individuals with ASDs arise as a result of deficits in Theory of Mind (ToM) development. The degree to which impairment in ToM corresponds to real-world social-communicative impairments has received little …

Rhetorically Ascribed Meaning In Marketing: The Role Of Narrative In Establishing Exchange Value, Paul A Lucas

Electronic Theses and Dissertations

Use value and exchange value, concepts explored by Aristotle, are terms dealing with the natural function of an object and the object's worth in an exchange, respectively. In this work, Aristotle's concepts are applied to contemporary marketing practices and other aspects of culture in order to evaluate the way in which meaning is ascribed to objects. The role of the brand, for example, is to alter the exchange value of an object, while the use value can be left unchanged. Brands are indicative of exchange value because they have no substance to speak of, and they are a matter of …

Graduate Recital, Piano, Josiane Merlino

Electronic Theses and Dissertations

Mozart composed his D Major Sonata, K. 311 in 1777 when he was twenty-one years old. He seemed to have hit his stride as a composer of keyboard sonatas, assimilating into this piece artistically fulfilling juxtapositions of brilliant virtuosity and subdued lyricism, humor and heartfelt expression. The first movement begins in a spirited manner, then gives way to a lyrical second theme. As the movement draws to a close in pure joy, the contrast of the pleasant and soothing second movement is all the more striking—Mozart's niche as an opera composer proves evident by the beautiful singing melodic line. The …

Integrated Marketing Communication (Imc) And Ethnic Target Marketing: A Communitarian Ethical Framework In Action, Denise Christine Murphy Gerber

Electronic Theses and Dissertations

This research project will be designed such that the philosophical metaphors of community, culture and responsibility will be analyzed as they pertain to integrated marketing research. These metaphors will then be placed on top of a theoretical foundation based in communitarian ethics in order to provide a more culturally relevant framework for marketing to United States Hispanics. Lastly, a pedagogy for teaching this framework will be included as an application of the theory.

Specifically, in the introduction, the topic, research questions, arguments and thesis will be introduced. Introductory observations will be made on the size and importance of the Hispanic …

The Effect Of Caffeine And Choline On Short-Term Memory, Natasha Nagrecha

Electronic Theses and Dissertations

This study sought to determine whether caffeine combined with choline could improve short-term memory in healthy adults. The study tested the effect of choline (2 gm) alone and in combination with several concentrations of caffeine (25 mg, 50mg and 100mg) on short-term verbal and visual memory and attention. The Wide Range Assessment of Memory and Learning-2 was utilized. Choline 2 gm + caffeine 25 mg group showed significantly (p<0.05) higher overall memory performance whereas memory performance in the choline 2 gm + caffeine 50 mg group was significantly impaired compared to placebo. The data suggest that specific combinations of caffeine and choline can either facilitate or impair short-term memory in adults with normal cognitive function. Future studies of caffeine and choline combinations will test memory performance in subjects with memory impairment.