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Graduate Theses, Dissertations, and Problem Reports (ETD)

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The Effect Of A Flaxseed-Oil Enhanced Diet On The Shelf Life And Sensory Characteristics Of Farmed Brook Trout (Salvelinus Fontinalis), Courtney Anne Simmons Jan 2009

The Effect Of A Flaxseed-Oil Enhanced Diet On The Shelf Life And Sensory Characteristics Of Farmed Brook Trout (Salvelinus Fontinalis), Courtney Anne Simmons

Graduate Theses, Dissertations, and Problem Reports (ETD)

The effect of dietary modification with flaxseed-oil (Flax) enhanced feed on the sensory characteristics and shelf life of brook trout fillets was examined. The diets were composed of a commercial feed supplemented with either fish oil (control diet, CD) or Flax (treatment diet).

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The Roles Of The Phosducin Family Proteins In The Regulation Of Heterotrimeric G Proteins In Vertebrate Photoreceptors, Hongman Song Jan 2009

The Roles Of The Phosducin Family Proteins In The Regulation Of Heterotrimeric G Proteins In Vertebrate Photoreceptors, Hongman Song

Graduate Theses, Dissertations, and Problem Reports (ETD)

Phosducin (Pdc) and phosducin-like protein 1 (PhLP1) are homologous proteins of the phosducin gene family that specifically interact with heterotrimeric G proteins. Both Pdc and PhLP1 are expressed in photoreceptors, sensory neurons of the retina responsible for acquisition of visual information; however their functions in these cells remains enigmatic. Photoreceptors maintain remarkably high and tightly controlled levels of the heterotrimeric G protein, transducin, utilized by these cells for visual signal transduction. Our central hypothesis was that Pdc and PhLP1 are engaged in the maintenance of transducin homeostasis in the photoreceptors.;To test this hypothesis, we have studied phosphorylation of Pdc, which …

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Synovium-Derived Stem Cell-Based Meniscal Reconstruction On Small Intestinal Submucosa, Yunbing Tan Jan 2009

Synovium-Derived Stem Cell-Based Meniscal Reconstruction On Small Intestinal Submucosa, Yunbing Tan

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study was aimed at investigating the feasibility of co-culturing meniscus cells and synovium-derived stem cells on small intestinal submucosa (SIS) in order to establish an innovative method and further to optimize the culture conditions for engineering in vitro meniscus constructs. First, two groups of individual cells and a co-culture group were mixed with fibrin gel and seeded onto SIS discs, then incubated in a serum-free defined medium for one month. Electron and fluorescent microscopy were utilized to evaluate cell attachment and migration. Through histology, biochemical quantification, real time PCR, and compressive modulus, the co-culture group showed greater cell viability …

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Methods For Iris Classification And Macro Feature Detection, Manisha Sam Sunder Jan 2009

Methods For Iris Classification And Macro Feature Detection, Manisha Sam Sunder

Graduate Theses, Dissertations, and Problem Reports (ETD)

This work deals with two distinct aspects of iris-based biometric systems: iris classification and macro-feature detection. Iris classification will benefit identification systems where the query image has to be compared against all identities in the database. By preclassifying the query image based on its texture, this comparison is executed only against those irises that are from the same class as the query image. In the proposed classification method, the normalized iris is tessellated into overlapping rectangular blocks and textural features are extracted from each block. A clustering scheme is used to generate multiple classes of irises based on the extracted …

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The Effect Of Nutrients Upon The Activity Of Sr Proteins, Callee Mcconnell Walsh Jan 2009

The Effect Of Nutrients Upon The Activity Of Sr Proteins, Callee Mcconnell Walsh

Graduate Theses, Dissertations, and Problem Reports (ETD)

RNA splicing is an important component of gene expression that contributes immensely to the biological complexity of higher eukaryotes. The regulation of splicing by external stimuli, such as nutrients, is poorly understood, however. The experiments contained herein sought to understand how the activity of splicing factors called SR proteins is regulated by insulin and polyunsaturated fatty acids in the liver using the model mRNA glucose-6-phosphate dehydrogenase (G6PD). RNA affinity and chromatin immunoprecipitation experiments demonstrated that refeeding of rodents stimulates the binding of SR proteins to the splicing regulatory element of G6PD; and this was especially relevant for SRp20. In vitro …

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Examining The Protective Effects Of Sesamol On Oxidative Stress Associated Blood -Brain Barrier Dysfunction In Streptozotocin-Induced Diabetic Rats, Reyna Vangilder Jan 2009

Examining The Protective Effects Of Sesamol On Oxidative Stress Associated Blood -Brain Barrier Dysfunction In Streptozotocin-Induced Diabetic Rats, Reyna Vangilder

Graduate Theses, Dissertations, and Problem Reports (ETD)

Many studies point to vascular dysfunction as an underlying cause for the increased incidence of cognitive dysfunction and risk for development of Alzheimer's disease during diabetes. Vascular dysfunction is not an uncommon occurrence in patients with diabetes and microvascular dysfunction commonly leads to clinical complications such as blindness, peripheral neuropathy, and kidney failure. Microangiopathies of the retina, kidney, and peripheral nerves have been well-characterized; however, the effects of diabetes on blood-brain barrier (BBB) function have been understudied.;Pathophysiological changes defining microvascular dysfunction include basement membrane thickening, cytoskeleton rearrangement, and increased paracellular leakage. Increased paracellular leakage of the BBB suggests a functional …

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A Study Of The Relationship Between The Leadership Images Of West Virginia Superintendents And Directed Modes Of Thinking, Dianna M. Vargo Jan 2009

A Study Of The Relationship Between The Leadership Images Of West Virginia Superintendents And Directed Modes Of Thinking, Dianna M. Vargo

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines the relationship between leadership images of West Virginia public school superintendents and their directed modes of thinking. The Leadership Images: A Leadership Self-Inventory Instrument was used to collect data from the superintendents regarding their leadership images. The Keirsey's FourTypes Sorter was used to collect data from the superintendents regarding their directed modes of thinking. Also, the superintendents were asked to respond to five qualitative questions related to the work they do as superintendents. The surveys were used along with a demographic questionnaire that collected information regarding gender, size of the student population, student free and reduced status, …

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Characterizing The Relation Between Depressive Symptoms And Parkinson's Disease In A Sample Of Swedish Twins, Rebecca K. Widoe Jan 2009

Characterizing The Relation Between Depressive Symptoms And Parkinson's Disease In A Sample Of Swedish Twins, Rebecca K. Widoe

Graduate Theses, Dissertations, and Problem Reports (ETD)

Depression commonly co-occurs with Parkinson's disease (PD). Psychosocial stressors and biochemical changes associated with PD have both been implicated in the etiology of depression in PD. The purpose of the current study was to examine whether genetic or environmental influences contribute to the increased risk for depressive symptoms among individuals with PD in a population of twins. Among individuals with PD, 24% endorsed a moderate-severe level of depressive symptoms, and 64% endorsed at least a mild level of depressive symptoms. Case-control results indicated that PD is a significant risk factor for both mild (OR = 3.11, CI = 1.82-5.31) and …

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Understanding Emotional Pain: A Preliminary Investigation, Ben Weinstein Jan 2009

Understanding Emotional Pain: A Preliminary Investigation, Ben Weinstein

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to examine the construct of emotional pain, as well as its relation to other affective and sensory states. There were 250 undergraduates who signed into an online data collection mechanism and were randomly assigned to five groups in which they wrote a vignette about a personal experience. Participants who indicated they previously had experienced the situation wrote a personal account about an emotionally painful, physically painful, traumatic, depressing, or joyful situation. Additionally, participants completed questionnaires to describe emotional state, pain descriptions, anxiety sensitivity and possible symptoms of depression and posttraumatic stress disorder associated with …

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A Faster Algorithm For The Single Source Shortest Path Problem With Few Distinct Positive Lengths, Matthew D. Williamson Jan 2009

A Faster Algorithm For The Single Source Shortest Path Problem With Few Distinct Positive Lengths, Matthew D. Williamson

Graduate Theses, Dissertations, and Problem Reports (ETD)

This thesis proposes an algorithm that involves Dijkstra's algorithm to solve the Single Source Shortest Path Problem in a graph where the length of each edge is positive, and the specific case where there is a distinct number of possible lengths. Given a graph where there are n vertices, m edges, and K distinct edge lengths, the proposed algorithm runs in O(m ) time if nK ≤ 2m and O(m log nKm ) time if nK > 2m. The algorithm is tested and compared with some of the fastest algorithms for the Single Source Shortest Path Problem for graphs with arbitrary …

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The Effect Of Different Road Load Implementation Strategies On Fuel Economy Of Usps Step Vans, Seiar Ahmad Zia Jan 2009

The Effect Of Different Road Load Implementation Strategies On Fuel Economy Of Usps Step Vans, Seiar Ahmad Zia

Graduate Theses, Dissertations, and Problem Reports (ETD)

West Virginia University (WVU) is continuously improving and updating their testing quality, procedures and goals. As tests are conducted on the Transportable Heavy Duty Vehicle Emissions Testing Laboratory (THDVETL), real world implementation is crucial in order to compare and contrast vehicles within fleets, use of exhaust aftertreatment devices and hybridized vehicles. WVU implements road loads on the chassis dynamometer using a method described in 40 CFR §86.1229-85. The proposed method requires three variables from the vehicle: maximum height, maximum width and vehicle weight. The issue with this method arises due to the fact that it does not cover a wide …

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Functional Analysis Of Arabidopsis Cold Shock Domain Proteins, Yongil Yang Jan 2009

Functional Analysis Of Arabidopsis Cold Shock Domain Proteins, Yongil Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

To understand the function of cold shock domain proteins in planta, I analyzed AtCSP3 (At2g17870), which is one of four A&barbelow;rabidopsis t&barbelow;haliana c&barbelow;old s&barbelow;hock domain p&barbelow;roteins (AtCSPs). Taq-Man probe quantitative RT-PCR (qRT-PCR) analysis confirmed that AtCSP3 transcripts were expressed dominantly in reproductive and meristematic tissues. The homozygous loss of function mutant atcsp3 displays a distinct phenotype with an overall reduced sized of seedlings, small sized orbicular rosette leaves, and curled leaf blades. Microscopic visualization of cleared leaves revealed a reduction in size and increased circular shape of palisade mesophyll cells in atcsp3 leaves. Image analysis of palisade cell layers indicated …

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Identification Of Chicken Repeat 1 (Cr1) Elements In Forensically Important Carrion Fly Species And Characterization Of One Such Element Within Sarcophaga Bullata, Michelle Lee Thompson Jan 2009

Identification Of Chicken Repeat 1 (Cr1) Elements In Forensically Important Carrion Fly Species And Characterization Of One Such Element Within Sarcophaga Bullata, Michelle Lee Thompson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Retrotransposons including CR1 (Chicken Repeat 1) elements mobilize in a genome in a way that makes them useful for phylogenetic analysis and species identification. This study was designed to identify lineages of CR1 elements in the genomes of forensically important carrion fly species and to further characterize the one element, Sarcophaga bullata CR1B, though genome walk techniques.;Using conserved oligonucleotide primers, CR1 fragments from several carrion fly taxa were amplified, cloned and sequenced, and the recovered sequences were analyzed to identify different lineages of elements. A variety of retrotransposon families were recovered that exhibit similarity to known retrotransposon families from other …

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Key Elements Of The Esl/Efl Teacher Preparation Program At The University Of Ha'il, Saudi Arabia: Efl Practitioners And Faculty Perceptions., Asmaa Shaei Alshuaifan Jan 2009

Key Elements Of The Esl/Efl Teacher Preparation Program At The University Of Ha'il, Saudi Arabia: Efl Practitioners And Faculty Perceptions., Asmaa Shaei Alshuaifan

Graduate Theses, Dissertations, and Problem Reports (ETD)

This investigation was designed to determine the perceptions of ESL/EFL faculty members and ESL/EFL practitioners teaching in Girls’ Public Schools in the city of Ha’il, Saudi Arabia, towards key components of the ESL/EFL teacher preparation program, major goals and curriculum of EFL teaching in public schools. This research tested if the difference of teaching level (university vs. grade school) causes a difference in the perceptions of EFL/ESL faculty or EFL/ESL practitioners. The data was gathered from two main sources which are university level, University of Ha’il, and grade school level (i.e., elementary, intermediate, secondary). A survey was used for this …

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Polarity Inverted Gallium Nitride For Photonic Crystal Biosensors., Randy P. Tompkins Jan 2009

Polarity Inverted Gallium Nitride For Photonic Crystal Biosensors., Randy P. Tompkins

Graduate Theses, Dissertations, and Problem Reports (ETD)

Photonic crystals are periodic nanostructures used to control the propagation of electromagnetic waves. Depending on geometry and refractive index contrast between adjacent regions, periodic variation of the refractive index can result in a photonic band gap or non-allowed set of frequencies that cannot propagate through the crystal. Defects can be introduced at photonic crystal lattice sites, resulting in localized modes that lie within the photonic gap. Such defect cavities can be tuned to resonant frequencies of a defect mode and whole planes or lines of defects can be fabricated in photonic crystals resulting in optical confinement of defect modes. These …

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Removal Of Phosphorus/Selenium From Aqueous Solutions By Adsorption Processes, Shilpa Bhojappa Jan 2009

Removal Of Phosphorus/Selenium From Aqueous Solutions By Adsorption Processes, Shilpa Bhojappa

Graduate Theses, Dissertations, and Problem Reports (ETD)

The present study includes two parts: (1) Acid mine drainage (AMD) sludge, a waste product from coal mine water treatment, was used as an adsorbent to develop a cost-effective treatment approach to phosphorus removal from municipal secondary effluents. (2) Synthesized nano-magnetite was used as an adsorbent to develop an innovative technology for selenium removal from aqueous solutions. Each case involved a series of batch adsorption experiments conducted to evaluate adsorption kinetics, isotherms, and adsorptive thermodynamics. The effects of pH, temperature, concentration, contact time, and competing anions on the concerned pollutant removal were examined as well.;Adsorption of phosphorus onto AMD sludge …

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Steroid Analysis By Ph-Mediated Stacking Mekc, Liliya Bykova Jan 2009

Steroid Analysis By Ph-Mediated Stacking Mekc, Liliya Bykova

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation is based on research that led to the development and application of capillary electrophoresis method for the analysis of sex steroid hormones in the blood or plasma of fish species. The analysis of steroid hormones is essential to reveal chemical compounds that are suspected in endocrine disruption, but it is challenging due to the similarity of the chemical structures of steroids, their low concentrations, and limited volumes of plasma or blood samples in fish available for analysis. There is therefore an acute need to develop reliable accurate and systematic analytical methods applicable for the analysis of structurally similar …

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Ecological Responses Of Streams To Anthropogenic Stressors, And Watershed Cause-Effect Modeling In The Mid-Atlantic Highlands Region Of The United States, Yushun Chen Jan 2009

Ecological Responses Of Streams To Anthropogenic Stressors, And Watershed Cause-Effect Modeling In The Mid-Atlantic Highlands Region Of The United States, Yushun Chen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Urban sprawl and related habitat disturbance and acidic deposition are major anthropogenic stressors in the Mid-Atlantic Highlands region of the United States. Little information is available about the impacts of these stressors and cause-effect relationships between these watershed stressors and stream biotic/abiotic conditions in this region. A 10-year study (1997-2006) in the Lost River watershed and a 6-year study (2002-2007) in a South Branch Potomac River watershed were conducted to assess the impacts of Corridor H highway construction on stream biotic and abiotic conditions. Also, a three-decade study (1980-2006) using data from 5 wet deposition stations and 21 major stream …

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Novel Methods For Producing Cellulose Nanocrystals From Lignocellulosic Materials And Cellulose Nanocrystals Reinforced Polymer Nanocomposites, Paul Busumafi Filson Jan 2009

Novel Methods For Producing Cellulose Nanocrystals From Lignocellulosic Materials And Cellulose Nanocrystals Reinforced Polymer Nanocomposites, Paul Busumafi Filson

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cellulose nanocrystals (nanofibers) represent a new emerging biological source of reinforcing biofillers. In this dissertation, we report the results of a study to produce cellulose nanocrystals from recycled pulp, hardwood and pine dissolving pulps using maleic acid, ultrasonic-assisted (sono-chemical treatment) and enzyme-mediated hydrolysis followed by fragmentation of cellulose crystallites using ultrasonic treatment. Additionally, the effect of two modes of heating: conventional and microwave, on enzyme-mediated and maleic acid hydrolysis were investigated. Cellulose nanocrystals yields from maleic acid hydrolysis of lignocellulosic materials were lower than that obtained from endoglucanase mediated hydrolysis of lignocellulosic materials. Sonochemical treatment of lignocellulosic materials produced both …

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Fuzzy Rock Typing: Enhancing Reservoir Simulation And Modeling By Honoring High Resolution Geological Models, Vida Gholami Jan 2009

Fuzzy Rock Typing: Enhancing Reservoir Simulation And Modeling By Honoring High Resolution Geological Models, Vida Gholami

Graduate Theses, Dissertations, and Problem Reports (ETD)

Rock typing is an essential part of building geologic model for an asset. Millions of dollars are invested in logs, core measurements, SCAL studies, and geological interpretation that result in definition of different rock types. Rock types overlap and do not have crisp boundaries.;Upon definition of rock types for a series of geological formations geoscientists use approximation of multiple and overlapping rock types to identify a dominant rock type for any grid block in a reservoir simulation model. This defeats the original purpose of performing detail geological, petrophysical studies as far as reservoir flow models are concerned.;The objective of this …

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Applications Of Ultra Performance Liquid Chromatography (Uplc) And Tandem Mass Spectrometry For The Detection And Quantification Of Cocaine, Amphetamine, And Opiate Derivatives In Human Meconium, Joshua Adam Gunn Jan 2009

Applications Of Ultra Performance Liquid Chromatography (Uplc) And Tandem Mass Spectrometry For The Detection And Quantification Of Cocaine, Amphetamine, And Opiate Derivatives In Human Meconium, Joshua Adam Gunn

Graduate Theses, Dissertations, and Problem Reports (ETD)

Development and validation of ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) methodologies for the purpose of detecting and quantifying common drugs of abuse in human meconium specimens is described. Meconium is the first stool passed by a newborn infant. Meconium formation occurs over several months of gestation and subsequent toxicological analysis of the specimens can be useful for identifying drugs and other xenobiotics indicative of prenatal drug exposure.;Ultra performance liquid chromatography (UPLC) is an emerging analytical technique which draws upon the principles of chromatography to run separations at higher flow rates for increased speed, while simultaneously achieving superior resolution …

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Empirical Essays On Financial Market Linkages In Macroeconomics, Ellis B. Heath Jan 2009

Empirical Essays On Financial Market Linkages In Macroeconomics, Ellis B. Heath

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation highlights the effects of monetary and fiscal policy on financial markets both within and across borders. In the first essay I examine how credit affects both real GDP and inflation in the U.S. Without a well-functioning credit market, at least two principal components of GDP---consumer durables and investment---would suffer. Credit markets allow individuals and firms to match those with extra savings and those with more pressing spending and investing needs to mutually benefit each other. However, credit markets are diverse. Clearly, some credit variables would be expected to play a more important role in the macroeconomy than others. …

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Acidic Deposition Effects On Above- And Belowground Wood Biomass And Nutrient Status In A Young Hardwood Forest, Brittany Anne Johnson Jan 2009

Acidic Deposition Effects On Above- And Belowground Wood Biomass And Nutrient Status In A Young Hardwood Forest, Brittany Anne Johnson

Graduate Theses, Dissertations, and Problem Reports (ETD)

The impact of acid deposition on forest productivity has been studied extensively during the past 30 years. Mixed results abound due to variations in forest age, species composition, land use history, climate, and different experimental procedures. However, most results suggest alterations in productivity and nutrient status as a result of elevated acid deposition. The Long-Term Soil Productivity (LTSP) site in the Fernow Experimental Forest served as the study site; it was initiated with the purpose of observing the impact of forest management and air quality on biomass production and nutrient cycling (Adams et al. 2004). In its entirety, this experiment …

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Lifestyle Behaviors And Illness Related Factors As Predictors Of Recurrent Headache In Us Adolescents, Suzy Mascaro Walter Jan 2009

Lifestyle Behaviors And Illness Related Factors As Predictors Of Recurrent Headache In Us Adolescents, Suzy Mascaro Walter

Graduate Theses, Dissertations, and Problem Reports (ETD)

Purpose. Successful management of recurrent headache among adolescents requires an understanding of the lifestyle behaviors (skipping meals, water intake, tobacco use, alcohol use, and physical activity) and illness related factors (depression, somatic complaints, insomnia and obesity) reported to be associated with this headache type. This study describes a multivariate model demonstrating how lifestyle behaviors and illness related factors work together to predict recurrent headache in an adolescent population.;Method. A descriptive, cross-sectional, secondary analysis using survey data from the National Longitudinal Study of Adolescent Health (Add Health) (1996) will be reported. Add Health is a large database providing a nationally representative …

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Orientation Of Community-Based Tourism Programs Towards Sustainable Tourism Criteria In A Newly Established Democracy: The Case Of Cbt Kochkor, Kyrgyz Republic, Trent F. Milam Jan 2009

Orientation Of Community-Based Tourism Programs Towards Sustainable Tourism Criteria In A Newly Established Democracy: The Case Of Cbt Kochkor, Kyrgyz Republic, Trent F. Milam

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to its limited scale, sustainable tourism in less developed countries remains a difficult case to study. However, even though these operations are challenged in capacity and financial strength, their efforts and results are worth recognition and consideration. This study evaluates the sustainable tourism organization known as CBT Kochkor, a locally managed and staffed organization whose mission is to assist rural citizens in the post-Soviet country of Kyrgyzstan during its transition to a free market economy. Created under the tenets of sustainable tourism, CBT Kochkor provides income generation opportunities through community employment while minimally affecting the resource's natural environment and …

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Examining The Role Of Entrepreneurship In Economic Development In Appalachia, Maribel N. Mojica Jan 2009

Examining The Role Of Entrepreneurship In Economic Development In Appalachia, Maribel N. Mojica

Graduate Theses, Dissertations, and Problem Reports (ETD)

Increasing uncertainty in the world economy has created challenges for regions to pursue development strategies to achieve economic growth. Globalization, increased marketing integration, and the advent of new technologies led to approaches from traditional industrial recruiting to less traditional approaches. Among these latter approaches is the increased importance of entrepreneurship for creating economic growth through establishment of new firms or growth from established firms. Exploring the characteristics of entrepreneurship and its contributions to the local economy can help develop a map for designing specific development policies for Appalachia.;The main objective of the study is to determine the relationship between regional …

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Essays On The Impact Of Market Information On Stock Markets: R&D, Patents And Money Illusion, Kwasi Osei-Yeboah Jan 2009

Essays On The Impact Of Market Information On Stock Markets: R&D, Patents And Money Illusion, Kwasi Osei-Yeboah

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation identifies patents and R&D expenditures as firm-level information variables, and investigates how they affect the pricing of assets in the stock market. In the first essay, the question as to whether patents and R&D represent adverse selection risk is investigated. Firms investing in patents and R&D may present an uncertain outcome for investors who do not have the privilege of insider information. This may increase the adverse selection cost for uninformed investors. For the uninformed investor to hold stocks with more private information, he must be compensated for taking on more firm characteristic risk. The empirical results show …

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The Effect Of Attentional Bias On Suggestibility, Elizabeth E. Stacom Jan 2009

The Effect Of Attentional Bias On Suggestibility, Elizabeth E. Stacom

Graduate Theses, Dissertations, and Problem Reports (ETD)

Research implies that individuals with high anxiety levels may be more accurate in response to misleading questions when compared to individuals with low anxiety levels (Ridley & Clifford, 2004; Ridley, Clifford, & Keogh, 2002). This effect may be because individuals with high anxiety levels demonstrate an attentional memory bias toward threatening stimuli. The present study investigated whether a high versus low attentional bias affects suggestibility. Seventy participants completed a visual probe task to measure attentional bias. Next, participants were presented with 11 threatening pictures. Each picture was followed by a distractor task. Participants were then asked two misleading and two …

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State-Wide Fish Tissue Contaminants Survey And Effects Of Feeding Type, Season And Gender On Fish Tissue Contamination Levels, Kenneth L. Stewart Jan 2009

State-Wide Fish Tissue Contaminants Survey And Effects Of Feeding Type, Season And Gender On Fish Tissue Contamination Levels, Kenneth L. Stewart

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fish tissue fillets from benthic, predator, and mixed diet species were collected from 24 different watersheds in West Virginia. Composite samples were prepared from three to six fish fillets collected at each site, and concentrations of the chemical contaminants polychlorinated biphenyls (PCBs) and mercury were determined for each composite sample. Differences in contaminant concentrations among three major categories of feeding type (predator, benthic, and mixed diet) were examined. Differences due to species of fish and among watersheds were also examined. Predators had significantly higher mercury concentrations than benthic or mixed diet feeders and benthic feeding fish had significantly higher PCB …

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The Riotous Presence In American Literature And Culture, Rebecca Skidmore Biggio Jan 2009

The Riotous Presence In American Literature And Culture, Rebecca Skidmore Biggio

Graduate Theses, Dissertations, and Problem Reports (ETD)

This project seeks a comprehensive understanding of riot as an operating principle in American history and culture---a principle variously revealed in, explored, or obscured by literature produced by popular and political novelists at the turn of the twentieth century. In defining riot as a presence, I identify as central to US history a haunting incoherence between fundamental cherished ideals of representative government and the use of violence or threats of violence to assert the privilege of one group through the subjugation of another.;Because representations influence the way we characterize historical events both prospectively and retrospectively, I conduct my investigation through …

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