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2015

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Sustainable Polymeric Materials Derived From Novel Soybean Based Monomers And Polymers: From Synthesis To Applications, Nathan Trenor Dec 2015

Sustainable Polymeric Materials Derived From Novel Soybean Based Monomers And Polymers: From Synthesis To Applications, Nathan Trenor

Theses and Dissertations

In this thesis, monomers and polymers derived from high oleic soybean oil are investigated. The properties of these monomers and polymeric materials are characterized and discussed. Chapter 1 describes an overall background of bio-based resources, monomers, polymers, and their potential impact on society. Polymerization techniques are introduced, and the overall objective of my research is described. Chapter 2 outlines the large scale preparation of a soybean based monomer and the use of this monomer in thermoset elastomers. The synthetic procedures and characterizations of the monomers and polymers are discussed. A model study using oleic acid is described and proved to …

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Supported Group Ib-Pd Bimetallic Catalysts Prepared By Electroless Deposition And Galvanic Displacement For Selective Hydrogenation Of Acetylene, Yunya Zhang Dec 2015

Supported Group Ib-Pd Bimetallic Catalysts Prepared By Electroless Deposition And Galvanic Displacement For Selective Hydrogenation Of Acetylene, Yunya Zhang

Theses and Dissertations

Ethylene is the building block for many chemical intermediates in the petrochemical industry. The current worldwide ethylene production is over 150 million tons per year and demand increases by 3-5% annually. However, ethylene produced from steam cracking of light naptha contains up to 2% acetylene which acts as a poison for the downstream ethylene polymerization catalysts. Selective hydrogenation of acetylene in the ethylene stream using supported Pd catalysts is the industrially preferred method of lowering acetylene to acceptable ppm levels (< 5 ppm). Due to inferior selectivity at high acetylene conversion and the formation of “green oil”, or ethylene/acetylene oligomers, during reaction, small amounts of Group IB metals have been added to improve the performance of current generation catalysts. However, the bimetallic effects of the above additives have not been experimentally confirmed, possibly because the conventional methods of catalyst preparation result in both monometallic and bimetallic particles with varying compositions. This in turn makes it difficult to determine the position of the two metallic components, and bimetallic interactions typically occur only when the two metals form proximal contact instead of separate particles. In this study, a series of Ag- and Au-Pd/SiO2 bimetallic catalysts were prepared by electroless deposition (ED) with incremental and controlled coverages of Ag and Au on Pd. The selectivity of acetylene to ethylene and turnover frequencies of acetylene conversion were enhanced at high coverages of Ag and Au on Pd surfaces due to the transition of acetylene adsorption modes, which was further confirmed by the kinetics of acetylene hydrogenation. The similar performance trends for Ag- and Au-Pd/SiO2 suggest that the bimetallic effect for these catalysts was likely geometric and not electronic in nature. For comparison, a series of reverse Pd-Ag/SiO2 bimetallic catalysts where variable coverages of Pd were deposited onto Ag surfaces was prepared using galvanic displacement (GD) of Ago by Pd2+ to further explore the nature of bimetallic effects for selective acetylene hydrogenation. Unlike for the earlier case for Ag on Pd surfaces using ED, for samples prepared by GD there was considerably diffusion of Pd into the Ag lattice to give greater electronic interactions between these two metals, which limited selectivity of acetylene hydrogenation to form ethylene.

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Metabotropic Receptor Modulation Of Kainate Receptors In The Hippocampus, C'Iana Patrice Cooper Dec 2015

Metabotropic Receptor Modulation Of Kainate Receptors In The Hippocampus, C'Iana Patrice Cooper

Theses and Dissertations

Kainate receptors (KARs) are glutamate-gated ion channels that mediate synaptic transmission, modulate transmitter release, and mediate excitation in the brain. Potentiation in their function predisposes the hippocampus to hyperexcitability and seizures. These receptors are widely expressed throughout the central nervous system as tetramers composed of various combinations of GluK1-5 subunits. In the hippocampus (a brain region commonly associated with seizure initiation), GluK2-, GluK4-, and GluK5-containing receptors are highly expressed in the CA3 pyramidal cell layer, whereas GluK1 is barely detectable. The lack of pharmacological tools hinders identifying the functional contribution of each kainate receptor subtype in normal CA3 synaptic transmission. …

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Media Effect On Resident Attitude Toward Hosting The Olympic Games: A Cross-National Study Between China And The Usa, Qiulin Lu Dec 2015

Media Effect On Resident Attitude Toward Hosting The Olympic Games: A Cross-National Study Between China And The Usa, Qiulin Lu

Theses and Dissertations

News media helped individuals think about and understand the impacts of hosting the Olympic Games, enabling them to clarify or construct their own opinions toward an Olympic bid. The purpose of this study was to explore to what extent the public opinion of hosting the Olympic Games was affected by the newspaper media content to which the public was exposed. Based on social exchange theory, social representation theory, and agenda setting theory, two research questions were proposed: (1) Do different news media contents about the impacts of hosting the Olympic Games lead to different attitudes among the local residents? (2) …

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The Role Of Ovarian Function In The Progression Of Cachexia In The ApcMin/+ Mouse, Kimbell Louise Hetzler Dec 2015

The Role Of Ovarian Function In The Progression Of Cachexia In The ApcMin/+ Mouse, Kimbell Louise Hetzler

Theses and Dissertations

Cachexia is a devastating a life-threatening condition that occurs secondary to underlying disease including cancer, AIDS, COPD and comprises severe loss of muscle and fat mass. Muscle mass atrophy and wasting with cachexia is especially dire, as skeletal muscle mass is associated with quality of life, functionality, and ability to respond to chemotherapeutics. While much investigation has been done in the male animal to elucidate the inflammatory pathways and muscle signaling underlying cachexia, very little work has occurred in the female. The overall purpose of this study is to determine if ovarian function can alter cachexia progression in the female …

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Hydroxy Polybenzimidazoles For High Temperature Fuel Cells And The Solution Polymerization Of Polybenzimidazole, Kayley Fishel Dec 2015

Hydroxy Polybenzimidazoles For High Temperature Fuel Cells And The Solution Polymerization Of Polybenzimidazole, Kayley Fishel

Theses and Dissertations

In this dissertation, two different hompolymers of polybenzimidazole (PBI) containing hydroxyl functional units were synthesized via the PPA Process to produce gel membranes. These polymers and their phosphoric acid doped membranes were characterized to further explore structure-property relationships in functionalized PBI's. Fuel cell performance of the doped membranes was evaluated and compared to previously reported PBI membrane chemistries. Copolymers of p-OH PBI and para-PBI were prepared at five different copolymer compositions to examine the effects of hydroxy content on membrane properties and compared to the respective homopolymers. The reactivity of the hydroxy groups and the formation of phosphate bridges were …

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Novel Block Copolymer Architectures For Lithography-Relevant Self-Assembly, Jeffery Hakim Hayat Dec 2015

Novel Block Copolymer Architectures For Lithography-Relevant Self-Assembly, Jeffery Hakim Hayat

Theses and Dissertations

This dissertation is focused on the synthesis, characterization, self-assembly, and materials processing of various functionalized block copolymer systems. A variety of monomers were prepared and polymerized through various polymerization techniques including atom transfer radical polymerization, reversible addition-fragmentation chain transfer polymerization, and ring-opening metathesis polymerization. Self-assembly of the functionalized block copolymers led to well-defined nanostructures in bulk and thin films. These materials have the capability to be utilized in various applications including ordered catalysts and templates for nanolithography. In Chapter 1, the overall background of diblock and triblock copolymers and their preparation methods is in this dissertation. Major research objectives of …

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Defining The Effects Of Gdf-2 On TgfB Signaling In Tumorigenic Epithelial Cells, Tirthankar Bandyopadhyay Dec 2015

Defining The Effects Of Gdf-2 On TgfB Signaling In Tumorigenic Epithelial Cells, Tirthankar Bandyopadhyay

Theses and Dissertations

Cancer cells can be viewed as such cells, which have disrupted/aberrant signaling pathways for maintaining cellular homoeostasis. Identifying such altered signaling mechanisms can help us target these pathways in a better way. GDF-2 (Growth and differentiation factor – 2) or BMP9 (Bone morphogenetic protein – 9), a multifunctional cytokine, is a member of the Bone Morphogenetic Protein subfamily, under TGFβ superfamily, with roles distinct from BMP2/4/7. While GDF-2 is known to be one of the most potent ectopic inducers of bone and cartilage formation, it rose to significance with the identification of its receptor ALK1 in endothelial cells. TGFβ’s role …

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Surface Modification Of Nanodiamond And Its Incorporation In Nanodiamond/Peek Nanocomposites, Zahidul Wahab Dec 2015

Surface Modification Of Nanodiamond And Its Incorporation In Nanodiamond/Peek Nanocomposites, Zahidul Wahab

Theses and Dissertations

The continued miniaturization of electronic device components requires new lightweight polymers with high thermal stability, high thermal conductivity, low electrical conductivity, and low dielectric constant. Composites of nanodiamond (ND) and poly(ether ether ketone) (PEEK) are candidates for these applications due their unique combination of properties. The objectives of this research are to explore new routes for surface functionalization of nanodiamond (ND), develop methods for maximizing dispersion of ND as a nano-scale filler in PEEK, and characterize the effect of dispersed ND on the mechanical, thermal and dielectric properties of ND/PEEK composites. Initial attempts to disperse different kinds of commercially available, …

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Dietary Patterns And Prostate Cancer Aggressiveness In African-American And European-American Men, Lara Ryan Schneider Dec 2015

Dietary Patterns And Prostate Cancer Aggressiveness In African-American And European-American Men, Lara Ryan Schneider

Theses and Dissertations

Several foods and nutrients have been linked to prostate cancer risk, but the effect of overall diet on prostate cancer outcomes is not well understood. Previous research has primarily examined a posteriori dietary patterns in relation to prostate cancer; studies that have used a priori dietary patterns and their relationship with prostate cancer have been inconclusive. Furthermore, racial differences in prostate cancer incidence and aggressiveness are not well understood. Data from the case-only North Carolina-Louisiana Prostate Cancer Project (PCaP) was used to examine the association between overall dietary pattern, as measured by the Mediterranean Diet (MED) score and the Dietary …

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Optical Spectroscopy And Chemometrics For Discrimination Of Dyed Textile Fibers And Magnetic Audio Tapes, Nathan C. Fuenffinger Dec 2015

Optical Spectroscopy And Chemometrics For Discrimination Of Dyed Textile Fibers And Magnetic Audio Tapes, Nathan C. Fuenffinger

Theses and Dissertations

This dissertation focuses on the application of both novel and standard chemometric approaches toward societal problems of interest in the areas of forensic science and cultural heritage preservation. Microspectrophotometry (MSP), a technique enabling measurements of absorption of electromagnetic radiation by microscopic materials in the ultraviolet-visible (UV-Vis) region, is widely used by forensic examiners for comparisons of metameric textile fibers. These comparisons are often hindered, however, by the raw or normalized spectra showing little detail or having few points of comparison. Derivative preprocessing can enhance structure in some instances. We have demonstrated through the use of multivariate statistics that derivatives are …

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Supramolecular Coordination Networks Of S- And F-Block Metals Featuring The 1,8-Naphthalimide Tecton, Andrew Paul Leitner Dec 2015

Supramolecular Coordination Networks Of S- And F-Block Metals Featuring The 1,8-Naphthalimide Tecton, Andrew Paul Leitner

Theses and Dissertations

The reactions of (S)-2-(1,8-naphthalimido)propanoic acid (HLala), and (S)-2-(1,8- naphthalimido)-3-hydroxypropanoic acid (HLser), protonated forms of ligands that contain a carboxylate donor group, an enantiopure chiral center and a 1,8-naphthalimide π...π stacking supramolecular tecton and in the case of HLser an alcohol functional group, with the appropriate alkali metal hydroxide followed by a variety of crystallization methods leads to the formation of crystalline K(Lala)(MeOH) (1), K(Lala)(H2O) (2), Na(Lala)(H2O) (3), KLser (4), CsLser (5) and CsLala (6). Each of these new complexes has a solid state structure based on six-coordinate metals linked into homochiral helical rod SBU central cores. In addition to the …

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General Strain Theory And Bullying Victimization: Do Parental Support And Control Alleviate The Negative Effects Of Bullying, Jonathon Thompson Dec 2015

General Strain Theory And Bullying Victimization: Do Parental Support And Control Alleviate The Negative Effects Of Bullying, Jonathon Thompson

Theses and Dissertations

With growing reports of bullying victimization ranging from 8 percent to 46 percent in many countries, bullying victimization has been declared an international problem often affecting youth in or near one’s school with poor parental supervision. While there has been a growing body of research concerning bullying victimization, few studies have examined the collateral consequences of bullying victimization and the mediating role of family processes through the theoretical lens of general strain theory. This thesis attempts to shed light on such a complex social phenomena and contribute to the bullying and stress literature. This study posits that bullying victimization is …

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Fast Methods For Variable-Coefficient Peridynamic And Non-Local Diffusion Models, Che Wang Dec 2015

Fast Methods For Variable-Coefficient Peridynamic And Non-Local Diffusion Models, Che Wang

Theses and Dissertations

In previous studies, scientists developed the classical solid mechanic theory. The model has been widely used in scientific research and practical production. The main assumption of the classical theory of solid mechanics is that all internal forces act through zero distance. Because of this assumption, the mathematical model always leads to partial differential equations, which meet with problems when describing the spontaneous formation of discontinuities and other singularities. A peridynamic model was proposed as a reformation of solid mechanics [40, 41, 43, 44, 45], which leads to a non-local framework that does not explicitly involve the notion of deformation gradients, …

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Impact Of Formulation And Processing Parameters On Mechanical Properties Of Magadiite/Elastomer Composites, Yating Mao Dec 2015

Impact Of Formulation And Processing Parameters On Mechanical Properties Of Magadiite/Elastomer Composites, Yating Mao

Theses and Dissertations

This work seeks a better understanding of mechanical reinforcement and energy dissipation in elastomer composites containing the layered silicate magadiite (MGD, Na2Si14O29·nH2O). We characterized the elastomer’s accessibility into MGD interlayer spaces and studied the factors that influence the composite mechanical properties. We also compare the mechanical reinforcement of MGD with montmorillonite (MMT, a layered aluminosilicate clay mineral), which is widely used as filler in other kinds of nanocomposites. The study explores the grafting chemistry, vulcanization, and reinforcement mechanism in MGD/elastomer composites, which may help us to formulate the platelet/elastomer composites with superior mechanical properties and performance in the future. We …

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Situationism And The Promise Of Virtue Ethics, Richard Barclay Holmes Dec 2015

Situationism And The Promise Of Virtue Ethics, Richard Barclay Holmes

Theses and Dissertations

In this dissertation, I argue that it is possible to develop an empirically adequate form of virtue ethics even if one grants that situationism is true. I define situationism as a skeptical thesis about globalism, or the thesis that temporally stable and trans-situationally consistent character and personality traits are widely instantiated. Situationists such as John Doris and Gilbert Harman argue that globalism is an empirically inadequate thesis. While I accept Doris and Harman’s situationist thesis, they also make a further argument which is the subject of this dissertation. They argue that since globalism is empirically inadequate and Aristotelian virtue ethics …

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Development Of Ultra-Low Loading Of Compressive Pt Lattice Cathode Catalyst On Highly Stable Support For Pemfc Automotive Applications, Tianyuan Xie Dec 2015

Development Of Ultra-Low Loading Of Compressive Pt Lattice Cathode Catalyst On Highly Stable Support For Pemfc Automotive Applications, Tianyuan Xie

Theses and Dissertations

The major barriers in the commercialization of the fuel cell technology for automotive applications are the cost and durability of the Pt catalyst and the support stability at high potentials. The U.S. Department of Energy (DOE) targets direct hydrogen fuel cell systems for transportation to meet 65% peak-efficiency, 5,000 hour durability with a mass production cost of $40/kW by 2020. Currently in 2015, the system can be operated at peak energy efficiency of 60% for 3,900 hours with cost of $55/kW. To meet these targets, precious metal loadings must be greatly reduced without altering the catalyst stability. The primary objective …

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A Phenomenological Study Of The Experiences Of Parents Of A Child Or Children Diagnosed With Deafness, David Patrick Leach Dec 2015

A Phenomenological Study Of The Experiences Of Parents Of A Child Or Children Diagnosed With Deafness, David Patrick Leach

Theses and Dissertations

This qualitative study examined the lived experiences of twelve parents who have a child or children diagnosed with deafness, and the meaning these parents have made of their experiences. The researcher conducted individual, semi-structured interviews and analyzed the data in accordance with the practices of phenomenological research. Thirty-seven themes were identified in the interview data, which were discussed in terms of their implications for efficacious clinical services to this population, as well as for the field of counselor education.

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Invective Drag: Talking Dirty In Catullus, Cicero, Horace, And Ovid, Casey Catherine Moore Dec 2015

Invective Drag: Talking Dirty In Catullus, Cicero, Horace, And Ovid, Casey Catherine Moore

Theses and Dissertations

Invective Drag: Talking Dirty in Catullus, Cicero, Horace, and Ovid, studies the relationship between invective texts and masculine self-fashioning. Using gender theory, rhetorical theory, and philology, I examine how invective speech in these authors operates outside the normative social parameters of Roman masculinity.. I examine the invectives of Catullus, Cicero, Horace, and Ovid to argue that in the speaker’s aggressive articulation of masculinity, he often ends up effeminizing or queering himself as he attempts to make his opponents radically other. I show that the hypermasculine speaker of the invective genre utilizes a strategy I term “invective drag,” the adoption of …

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Empirical Connections Between The Construct Of Value, The Quality Of Stability, And The Construct Of Regret, William Samuel Morris Jr. Dec 2015

Empirical Connections Between The Construct Of Value, The Quality Of Stability, And The Construct Of Regret, William Samuel Morris Jr.

Theses and Dissertations

The term value is a psychological construct frequently used in the social sciences. This research addresses the issue of stability of ratings of perceived value of participants for monetary, tangible, and intangible items that cross contexts. Also elucidated is the relationship of value to regret. Hypothesis one stated that value would be stable across time and different rating conditions. Forty-four participants rated the value of 72 stimulus items at two time points and in different contexts. Paired samples t-tests indicated 28 participants had no statistical difference in scores. Twenty-eight scores out of 44, when applied to a binomial test, indicates …

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Bio-Inspired Design Of Mechanical Band Pass Sensor With The Ability To Scavenge Energy, Md Riaz Uddin Ahmed Dec 2015

Bio-Inspired Design Of Mechanical Band Pass Sensor With The Ability To Scavenge Energy, Md Riaz Uddin Ahmed

Theses and Dissertations

Primary objective of this work is to introduce the multi-scale computational model for the bio-inspired acousto-ultrasonic band pass sensor that are capable of mechanically sense and/or filter wide range user defined frequencies. Selecting a particular and/or a distinct band of frequencies is essential for many applications in science engineering and technologies. For example design of sensors in chemical, biomedical and biological applications; device application for acoustic modulation by breaking the acoustic reciprocity and the sensors used in precision manufacturing applications requires sensing and/or filtering of wide range of acousto-ultrasonic frequencies. Presently, electronic devices are widely employed in commercial applications for …

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Wavelet Analysis Of Periodic Error In Heterodyne Interferometry, Chao Lu Dec 2015

Wavelet Analysis Of Periodic Error In Heterodyne Interferometry, Chao Lu

Theses and Dissertations

Heterodyne displacement measuring interferometry provides important metrology for applications requiring high resolution and accuracy. Heterodyne Michelson interferometers use a two-frequency laser source and separate the two optical frequencies into one fixed length and one variable length path via polarization. Ideally these two beams are linearly polarized and orthogonal so that only one frequency is directed toward each path. An interference signal is obtained by recombining the light from the two paths; this results in a measurement signal at the heterodyne (split) frequency of the laser source. This measurement signal is compared to the optical reference signal. Motion in the measurement …

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Optical Second Harmonic Generation In The Batio3 Phase On Magnetically Aligned Multiferroic Nanofibers, Katia Gasperi Dec 2015

Optical Second Harmonic Generation In The Batio3 Phase On Magnetically Aligned Multiferroic Nanofibers, Katia Gasperi

Theses and Dissertations

Multiferroic materials enable the exploration of electrical control of magnetic properties and vice versa. Their increasing interest is especially due to their potential applications in the industry of information storage. Thanks to recent progress in nanotechnology, they have also been found to have many other applications such as transducers and sensors, and they already occupy a unique place in the biomedical field. The objective of this project is to study multiferroic nanofibers made of cobalt ferrite CoFe2O4 (CFO) and barium titanate BaTiO3 (BTO) with a specific focus in the characterization of the ferroelectric phase. We researched the state of knowledge …

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Guided Wave Based Integrated Structural Health Monitoring And Nondestructive Evaluation, Zhenhua Tian Dec 2015

Guided Wave Based Integrated Structural Health Monitoring And Nondestructive Evaluation, Zhenhua Tian

Theses and Dissertations

Damage detection and health monitoring are critical for ensuring the structural safety in various fields, such as aerospace, civil and nuclear engineering. Structural health monitoring (SHM) performs online nondestructive evaluation (NDE) and can predict the structural remaining life through appropriate diagnosis and prognosis technologies. Among various SHM/NDE technologies, guided ultrasonic waves have shown great potential for fast and large area SHM/NDE, due to their sensitivity to small defects and capability to propagate long distances. Recent advances in guided wave based SHM/NDE technologies have demonstrated the feasibility of detecting damage in simple structures such as metallic plates and pipes. However, there …

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Numerical And Experimental Investigations Of Dam And Levee Failure, Ezzat Youssef Elhassan Mohamed Elalfy Dec 2015

Numerical And Experimental Investigations Of Dam And Levee Failure, Ezzat Youssef Elhassan Mohamed Elalfy

Theses and Dissertations

Both numerical and experimental investigations are conducted to study the failure of earthen dams and levees. Boussinesq equations describing one-dimensional unsteady flow including non-hydrostatic pressure distribution are solved numerically along with Exner equation for the sediment mass conservation to include the effects of the streamline curvature on the failure of non-cohesive earthen embankments. In addition, the effects of the steep bottom slope on the flow variables during the failure are studied by solving the Saint- Venant equations modified for steep bed slope along with the Exner equation to simulate non-cohesive earthen embankment failure due to overtopping. The Boussinesq equations are …

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Three Essays On Corporate Governance And Corporate Social Responsibility, He Wang Dec 2015

Three Essays On Corporate Governance And Corporate Social Responsibility, He Wang

Theses and Dissertations

In recent years, corporate social responsibility (CSR) activities, which are firms actions that go above and beyond the interests of the firm to further the social good, have become common practice. While extant literature on CSR largely investigates the consequences of CSR activities, only a few studies identify the determinants of CSR. This dissertation extends a growing literature on the determinants of CSR by exploring the impact of corporate governance on CSR activities in three related essays. The first essay investigates the impact of family control on CSR performance. Using newly collected data on the ultimate ownership structure of publicly …

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Framing Death: Politics, Meaning, And The Strategic Communication Of Organ Donation Messages In South Carolina, Jeremy T. Vanderknyff Dec 2015

Framing Death: Politics, Meaning, And The Strategic Communication Of Organ Donation Messages In South Carolina, Jeremy T. Vanderknyff

Theses and Dissertations

This study applies framing theory within a critical-interpretive anthropological context to understand how organ procurement organizations (OPOs) design messages to promote organ donation registration and how cultural factors including notions of embodiment and structural inequalities influence audiences’ processing of those messages. The first part of the study employs content analysis to deductively identify OPO-produced message frames. The second part of the study uses focus groups across South Carolina to explore audience reactions to different message frames. Themes from donors and non-donors alike reflected a mistrust of the medical establishment, a keen awareness of structural inequality, and complex notions of embodiment …

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A Survey Of The Kinetic Monte Carlo Algorithm As Applied To A Multicellular System, Michael Richard Laughlin Dec 2015

A Survey Of The Kinetic Monte Carlo Algorithm As Applied To A Multicellular System, Michael Richard Laughlin

Theses and Dissertations

We explore the origins and implementation of the Kinetic Monte Carlo method on a system of cells suspended in a liquid media. The situation presented herein has applications in the emerging field of biofabrication, which may have lasting impacts in medical science. The theory behind the method is explained in detail, starting with its emergence in the 1960s, and two major improvements to the scaling of the method are presented, along with a restriction to a special case. Finally, we give the results of several simulations.

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Dental Insurance As A Mitigating Factor In Reducing The Risk Of Mortality Among Working-Age Adults With Dental Caries And Periodontitis, Naveed Sadiq Dec 2015

Dental Insurance As A Mitigating Factor In Reducing The Risk Of Mortality Among Working-Age Adults With Dental Caries And Periodontitis, Naveed Sadiq

Theses and Dissertations

Background Poor oral health had been associated with increased risk of having systemic diseases and thus mortality. The purpose of this research was to find if dental coverage with health insurance could mitigate the risk of death due to untreated dental caries and periodontitis among working age U.S. adults. Methods Data were drawn from NHANES III (1988-1994) and linked to mortality updated till Dec. 31st, 2011. It was restricted to those in the age range of 20-64 years adults. Furthermore, it was restricted to those who had complete data collection on all measures. Unweighted propensity scores were calculated to control …

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Survival: A Teach For America Memoir, Christopher Neal Schumerth Dec 2015

Survival: A Teach For America Memoir, Christopher Neal Schumerth

Theses and Dissertations

“I grab Franklin and pull him upright, standing in between him and the smaller student. I spread my arms in each direction. That second of new life gives the smaller student renewed vigor. His fists shoot around and even into me. Franklin, whose punches actually hurt, gladly obliges in kind. Suddenly, I am the main, albeit incidental, object of both children’s rage. A sharp, stabbing pencil glances off my wrist, drawing blood. I look at the two cafeteria workers, dressed in white and protected by a shield of glass and the food they are distributing. They look the other way.” …

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