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Informing Social Work Practice Through The Enhancement Of The Biological Perspective: A Course Intervention Model For Human Service Professionals Working With Youth And Problems Of Conduct., Allison Sampson
Theses and Dissertations
The purpose of this study is to evaluate the effectiveness of an intervention model designed to enhance practitioners’ biological lens when using a biopsychosocial-spiritual model of holistic assessment and planning. The specific intervention utilized is a course curriculum developed to broaden human service professionals’ (including clinical social work professionals) understanding of attachment theory, neuroscience and trauma informed methods of practice. The course teaches professionals how to apply this knowledge to clinical assessment and intervention planning with youth who have experienced significant trauma in their lives and exhibit problems of conduct. Using an experimental design, participants from a large private mental …
Urban Adolescents’ Cognitive Responses To Peer Victimization: Does Psychosocial Adjustment Play A Role?, Amie Bettencourt
Urban Adolescents’ Cognitive Responses To Peer Victimization: Does Psychosocial Adjustment Play A Role?, Amie Bettencourt
Theses and Dissertations
Peer victimization is characterized by acts of physical, relational, and verbal aggression that can contribute to maladjustment. Youths’ responses to peer victimization are guided by social information-processing (SIP) skills that impact their adjustment. Maladjustment can contribute to biases in SIP. Biased processing occurs when youth rely on existing schemas without attending to cues from the immediate social context. These processing deficits contribute to the enactment of problematic responses that may lead to further maladjustment. However, not all youth exhibit SIP deficits. A recent study identified four adjustment clusters based on differences in aggression, anxiety, depression, social acceptance, and victimization within …
Mechanisms Of Rotator Cuff Disease: Alterations Of Scapular Kinematics On Subacromial Space, Amee Seitz
Mechanisms Of Rotator Cuff Disease: Alterations Of Scapular Kinematics On Subacromial Space, Amee Seitz
Theses and Dissertations
Rotator cuff disease is multi-factored and has been attributed to both intrinsic and extrinsic factors. Extrinsic factors contribute to compression of the rotator cuff tendons. Intrinsic factors that contribute to rotator cuff tendon degradation with tensile/shear overload include alterations in biology, mechanical properties, morphology, and vascularity. Subacromial impingement is related to factors that encroach upon the subacromial space, while internal impingement affects the articular side of the tendons adjacent to glenoid. While the mechanisms of impingement are varied, further research is necessary to improve treatment and patient outcomes. Chapter 2 is a thorough review of literature on the mechanisms of …
A Study Of Academic Achievement Differences Between The Genders, Marissa Housman
A Study Of Academic Achievement Differences Between The Genders, Marissa Housman
Theses and Dissertations
This study seeks to explore the academic achievement gap between male and female students by comparing grade point averages across genders. Specifically, the researcher hypothesized that such a gap exists and that females would academically surpass their male counterparts in the classroom. Participants consisted of 300 students in grades 5, 8, and 11 from a public school district in suburban New Jersey. Grade point average (GPA) was generated by converting letter grades into numbers (4.0-0.0) and then averaged. A two-way between-groups analysis of variance (ANOVA) confirmed the hypothesis that females have a higher average GPA than males, as a whole …
Integrated Affinity Column Capillary Electrophoresis Microdevices For Biomarker Analysis, Weichun Yang
Integrated Affinity Column Capillary Electrophoresis Microdevices For Biomarker Analysis, Weichun Yang
Theses and Dissertations
In this dissertation, microfluidic systems that integrate antibody-based sample preparation methods with electrophoretic separation are developed to analyze multiple biomarkers in a point-of-care setting. To form an affinity column, both monolith materials and wall-coated channels were explored. I successfully demonstrated that monolith columns can be prepared in microfluidic devices via photopolymerization. The selectivity of monolith columns was improved by immobilizing antibodies on the surface. These affinity columns can selectively enrich target analytes and reduce the signal of contaminant proteins up to 25,000 fold after immunoaffinity extraction. These results clearly demonstrate that microchip affinity monoliths can selectively concentrate and purify target …
Development And Applications Of The Hint Forcefield In Prediction Of Antibiotic Efflux And Virtual Screening For Antivirals, Aurijit Sarkar
Development And Applications Of The Hint Forcefield In Prediction Of Antibiotic Efflux And Virtual Screening For Antivirals, Aurijit Sarkar
Theses and Dissertations
This work was aimed at developing novel tools that utilize HINT, an empirical forcefield capable of quantitating both hydrophobic and hydrophilic (hydropathic) interactions, for implementation in theoretical biology and drug discovery/design. The role of hydrophobicity in determination of macromolecular structure and formation of complexes in biological molecules is undeniable and has been the subject of research across several decades. Hydrophobicity is introduced, with a review of its history and contemporary theories. This is followed by a description of various methods that quantify this all-pervading phenomenon and their use in protein folding and contemporary drug design projects – including a detailed …
In Vitro Evaluation Of Mechanical Heart Valve Performance Using A Novel Test Chamber In An Automated Mock Circulatory Loop, Antonio Walker
In Vitro Evaluation Of Mechanical Heart Valve Performance Using A Novel Test Chamber In An Automated Mock Circulatory Loop, Antonio Walker
Theses and Dissertations
Valvular heart disease (VHD) continues to have significant effects on many people’s lives, with numbers expected to grow tremendously over the next few years. Individuals suffering from severe valvular heart disease usually require a heart valve transplant in order to restore the native valve’s vital unidirectional flow regulation. Therefore, artificial heart valve (AHV) research is of very high importance. Previous research studies have provided substantial input in the realm of AHV design relative to durability, thrombotic and hemolytic potential, and overall functionality. However, modifications continue to be warranted due to limitations in the accuracy and time efficiency of the in …
Synthesis And Characterization Of An Oligothiophene-Ruthenium Complex And Synthesis And Optical Properties Of Oligothiophene-Ruthenium Complexes Bound To Cdse Nanoparticles, Nathan A. Bair
Theses and Dissertations
Oligothiophenes are of increasing interest in organic based electronic devices in part due to their high electron and hole mobilities. In an organic photovoltaic (OPV) device, the electronic properties of oligothiophenes make them advantageous as charge transfer junctions. To serve as charge transfer junctions, oligothiophenes must be functionalized to bind to the donor and acceptor parts of the device. The donor and acceptor parts are different materials and the synthesis of asymmetric oligothiophenes is of great interest. Previous researchers in our lab synthesized four asymmetric oligothiophenes, two with two thiophene subunits and two with four. Each set of oligothiophenes contained …
Low-Loss Hollow Waveguide Platforms For Optical Sensing And Manipulation, Evan J. Lunt
Low-Loss Hollow Waveguide Platforms For Optical Sensing And Manipulation, Evan J. Lunt
Theses and Dissertations
This dissertation presents a method for fabricating integrated hollow and solid optical waveguides on planar substrates. These waveguides are antiresonant reflecting optical waveguides (ARROWs), where high-index cladding layers confine light to hollow cores through optical interference. Hollow waveguides that can be filled with liquids or gases are an important new building block for creating highly-integrated optical sensors. The method developed for fabricating these integrated waveguides employs standard processes and materials used in the microelectronics industry, allowing for parallel, low-cost fabrication. Dielectric cladding layers are deposited on a silicon wafer using plasma-enhanced chemical vapor deposition (PECVD). After the lower cladding layers …
Role Of Ampk In The Upregulation Of Steroidogenic Acute Regulatory Protein In The Zona Fasciculata Of The Adrenal Cortex, Adam Wesley Dayton
Role Of Ampk In The Upregulation Of Steroidogenic Acute Regulatory Protein In The Zona Fasciculata Of The Adrenal Cortex, Adam Wesley Dayton
Theses and Dissertations
Cortisol is a glucocorticoid produced by the zona fasciculata (ZF) of the adrenal cortex. Traditionally, cortisol production and release was seen as being regulated strictly by adrenocorticotropic hormone (ACTH). While this is true of baseline cortisol levels and in response to acute mental stress, the picture is somewhat more complicated in other situations.Interleukin-6 (IL-6) contributes to the maintenance of cortisol levels in situations of prolonged immune or inflammatory stress. AMP activated protein kinase (AMPK) was investigated as a possible mediator of the action of IL-6 or as an independent actor in raising cortisol levels in response to hypoxemic or hypoglycemic …
Variable Palatability Of Quaking Aspen For Large Ungulate Herbivores, Patrice Alexa Nielson
Variable Palatability Of Quaking Aspen For Large Ungulate Herbivores, Patrice Alexa Nielson
Theses and Dissertations
Aspen is a key resource in the Rocky Mountain Region for wildlife forage and habitat, lumber products, scenery, and plays important roles in fire ecology and hydrological processes. There is evidence of aspen decline over much of the Intermountain West for approximately 100 years. In Dixie and Fishlake National Forests, UT, aspen distribution has decreased by nearly half. Causes of this decline are not well understood, although wildlife browsing by ungulates has been implicated as playing a major role. The objective of this research was to examine what soil or plant factors might be involved in wildlife browse choice in …
The Design Of Specifications For The Development Of Broadcast English Materials In Academic Listening/Speaking Courses, Amy Barlow
Theses and Dissertations
ESL students in academic listening/speaking courses often listen to long audio recordings similar to a lecture or other academic passages. When listening to these passages, students can lose their interest which impedes their learning of new strategies for understanding academic language. Students in the Level Four Listening/Speaking classes at Brigham Young University's English Language Center (ELC), under the previous curriculum, would experience this challenge. All of the passages were available only in audio and were long in duration. The students would lose interest and improve little in their listening skills. Under the new curriculum at the ELC, students in Academic …
In Vivo Measurement Of Rat Skeletal Muscle Oxygen Consumption Following Brief Periods Of Ischemia With Reperfusion As Assessed By Phosphorescence Quenching Microscopy, William Nugent
Theses and Dissertations
Brief periods of skeletal muscle ischemia (ischemic pre-conditioning) alter cellular metabolism in a way that confers protection over subsequent ischemic episodes. The mechanisms behind this effect have been studied indirectly through assays for the byproducts of ATP synthesis and in vitro studies of cellular signaling cascades and ROS generation. There have been no direct, in vivo assessments of the changes in respiration during reperfusion. We employed phosphorescence quenching microscopy in conjunction with a flow-arrest technique to assess the influences of external, pressure-induced 1- to 10-min focal ischemia on interstitial oxygenation (PISFO2) and the consumption of oxygen (VO2) in spinotrapezius muscles …
Model Detection Based Upon Amino Acid Properties, Kit J. Menlove
Model Detection Based Upon Amino Acid Properties, Kit J. Menlove
Theses and Dissertations
Similarity searches are an essential component to most bioinformatic applications. They form the bases of structural motif identification, gene identification, and insights into functional associations. With the rapid increase in the available genetic data through a wide variety of databases, similarity searches are an essential tool for accessing these data in an informative and productive way. In our chapter, we provide an overview of similarity searching approaches, related databases, and parameter options to achieve the best results for a variety of applications. We then provide a worked example and some notes for consideration. Homology detection is one of the most …
Canopy Disturbance And Reproduction In Cornus Florida L., Daniel Carr
Canopy Disturbance And Reproduction In Cornus Florida L., Daniel Carr
Theses and Dissertations
This study examined aspects of local reproductive variation in the flowering dogwood (Cornus florida L.) coincident with recent differences in primary canopy architecture. The dogwood trees in this study were impacted by a hurricane that created numerous treefall gaps, which created fine scale heterogeneity in the primary canopy. Fine scale disturbances in a forest can result in changes for multiple members of the forest community, including the reproductive responses of the trees and interspecific pollination mutualisms. Previously determined differences in offspring genetic structure suggested that pollen movement among genetically unstructured maternal individuals was significantly impacted between open, or disturbed, canopy …
A Mechanistic Study Of Strain Rate Sensitivity And High Rate Property Of Tendon, John Steeneck Clemmer
A Mechanistic Study Of Strain Rate Sensitivity And High Rate Property Of Tendon, John Steeneck Clemmer
Theses and Dissertations
The ultrastructural mechanism for strain rate sensitivity of collagenous tissue has not been well studied at the collagen fibril level. The objective is to reveal the mechanistic contribution of the collagen fibril to strain rate sensitivity. Collagen fibrils underwent significantly greater fibril strain relative to global tissue strain at higher strain rates. A better understanding of tendon mechanisms at lower hierarchical levels would help establish a basis for future development of constitutive models and assist in tissue replacement design. High rate mechanical property of tendon was also studied. Tendon was compressed under high strain rate (550 /s) using a polycarbonate …
Fire Ant Response To Management Of Native Grass Field Buffers, Sarah Lucinda Hale
Fire Ant Response To Management Of Native Grass Field Buffers, Sarah Lucinda Hale
Theses and Dissertations
Imported fire ants are invasive and cause injury to people, crops, livestock and wildlife. Disturbance may increase abundance and activity of fire ants. However, native grass field buffers established for grassland birds require periodic disturbance. I experimentally tested if fire ant mound density and foraging activity changed after burning and disking in native grass buffers and examined relationships among fire ants, vegetation, and grassland bird and butterfly metrics in undisturbed buffers. In 2008, disking increased mound density and foraging activity, but burning did not. In 2009, disking had no effect, but effects of disking the previous season persisted. Fire ant …
An Investigation Of The Relationship Among Wellness, Perceived Stress, Mattering, And At-Risk Status For Dropping Out Of High School, Janice Cummins Lemon
An Investigation Of The Relationship Among Wellness, Perceived Stress, Mattering, And At-Risk Status For Dropping Out Of High School, Janice Cummins Lemon
Theses and Dissertations
High school dropout continues to be an issue of national concern, and the inability of educators and researchers to find means of effectively reducing the dropout rate may be grounded in their approach to understanding this issue. Because there is limited prior research in addressing wellness, perceived stress, and mattering in relationship to at-risk status for dropping out of high school, this study concentrates on the gap in the educational and counseling literature documenting the extent to which these variables can contribute to the prediction of students who are at risk of dropping out of high school. Specifically, wellness, perceived …
Characterization Of The Occ Gene Cluster Required For The Production Of Antifungal Compound Occidiofungion In Burkholderia Contaminans Strain Ms14, Ganyu Gu
Theses and Dissertations
Strain MS14, exhibiting antifungal activity, was classified to belong to Burkholderia contaminans. Occidiofungin produced by strain MS14 is an octapeptide dedicated to a broad range of antifungal activities of the bacterium. The 58.2-kb genomic fragment containing 18 open reading frames (ORFs), named occidiofungin (occ) gene cluster, is required for occidiofungin production. Putative proteins encoded by five nonribosomal peptide synthetase genes (occA – occE) of the gene cluster were predicted to contain the catalytic modules responsible for the biosynthesis of occidiofungin. Transcription of all the ORFs identified in the region except ORF1 and ORF16 was regulated by both ambR1 and ambR2, …
Accuracy Of Estimating Age And Antler Size Of Photographed Deer, Jeremy J. Flinn
Accuracy Of Estimating Age And Antler Size Of Photographed Deer, Jeremy J. Flinn
Theses and Dissertations
Objective and accurate techniques are needed to estimate age and antler size of live white-tailed deer (Odocoileus virginianus), because these parameters are essential to many white-tailed deer management strategies. I developed and evaluated accuracy of methods for estimating age and antler size from photographs of live, male white-tailed deer using Geographic Information Systems (GIS). I estimated size of photographed, known-score mounted antlers accurately using a fixed-scale object and photographed, live deer using anatomical features. I determined if a series of morphometric ratios could be used to predict age of deer from photographs using a dichotomous key procedure. Mean percentage error …
A Study Of Doctoral Students' Perceptions Of The Doctoral Support And Services Offered By Their Academic Institution, James Boulder
A Study Of Doctoral Students' Perceptions Of The Doctoral Support And Services Offered By Their Academic Institution, James Boulder
Theses and Dissertations
The study examined doctoral students‟ perceptions of the doctoral support and services offered by Mississippi State University (MSU). The research design used was descriptive, non-experimental design. Validity of the online survey instrument was established by a panel of experts. Internal consistency and reliability was determined using factor analysis, Cronbach‟s alpha, and test/retest reliability which revealed that the instrument was consistent and reliable. Participants included 172 doctoral students in the seven colleges which offer doctoral programs and 172 doctoral alumni who had graduated within the last 5 years. Data was collected in fall 2009. Responding participants equaled 142 (41% return rate). …
A Study Of Grain Rotations And Void Nucleation In Aluminum Triple Junctions Using Molecular Dynamics And Crystal Plasticity, Matthew William Priddy
A Study Of Grain Rotations And Void Nucleation In Aluminum Triple Junctions Using Molecular Dynamics And Crystal Plasticity, Matthew William Priddy
Theses and Dissertations
This study focuses on molecular dynamics (MD) simulations, coupled with a discrete mathematical framework, and crystal plasticity (CP) simulations to investigate micro void nucleation and the plastic spin. The origin and historical use of the plastic spin are discussed with particular attention to quantifying the plastic spin at the atomistic scale. Two types of MD simulations are employed: (a) aluminum single crystals undergoing simple shear and (b) aluminum triple junctions (TJ) with varying grain orientations and textures undergoing uniaxial tension. The high-angle grain boundary simulations nucleate micro voids at or around the TJ and the determinant of the deformation gradient …
Design And Analysis Of Static Windrow Piles For In-House Broiler Litter Composting, Amy M. Schmidt
Design And Analysis Of Static Windrow Piles For In-House Broiler Litter Composting, Amy M. Schmidt
Theses and Dissertations
In-house windrow composting of broiler litter has been studied to reduce microbial populations between flocks. Published time-temperature goals are used to determine the success of the composting process for microbial reductions. Spatial and temporal density of temperature measurement can influence the ability to determine what portion of a windrow pile has achieved specified time-temperature goals. Based on this motivation, an investigation of the heating profile in windrowed litter and the identification of the effects of spatial and temporal sampling densities on the prediction of the heating profile in windrowed broiler litter were executed. Likewise, an investigation of the effects of …
Tissue Engineering Cartilage For Focal Defects, Scott Chi Tran
Tissue Engineering Cartilage For Focal Defects, Scott Chi Tran
Theses and Dissertations
Articular cartilage provides a near frictionless surface for the articulating ends of bones. Cartilage functions to lubricate and transmit compressive forces resulting from joint loading and impact. If damaged, whether by traumatic injury or disease, cartilage lacks the ability for self-repair. This study explores the production of scaffoldree cartilage and investigates the effect of Tissue Growth Technologies’ CartiGen Bioreactor on the cartilage. Chondrocyte and bone marrow-derived stem cell (BMSC) attachment to chitosan is also investigated in hopes of producing a bilayered construct for osteochondral repair. Results demonstrate that culturing of scaffoldree cartilage in the CartiGen bioreactor resulted in an enhancement …
A Heuristic Search Algorithm For Learning Optimal Bayesian Networks, Xiaojian Wu
A Heuristic Search Algorithm For Learning Optimal Bayesian Networks, Xiaojian Wu
Theses and Dissertations
Bayesian network is a popular machine learning tool for modeling uncertain dependence relationships among the random factors of a domain. It represents the relations qualitatively by using a directed acyclic graph (DAG) and quantitatively by using a set of conditional probability distributions. Several exact algorithms for learning optimal Bayesian networks from data have been developed recently. However, these algorithms are still inefficient to some extent. This is not surprising because learning Bayesian network has been proven to be an NP-Hard problem. Based on a critique of these algorithms, this thesis introduces a new algorithm based on heuristic search for learning …
Characterization Of Arabidopsis Thaliana Mutants Lacking A Jumonji Domain Containing Histone Demethylase And A Set Domain Containing Histone Methyl Transferase, Swetha Mamidi Reddy
Characterization Of Arabidopsis Thaliana Mutants Lacking A Jumonji Domain Containing Histone Demethylase And A Set Domain Containing Histone Methyl Transferase, Swetha Mamidi Reddy
Theses and Dissertations
Condensation of chromatin and alteration of chemical groups in the proteins around which the DNA is wrapped play major role in regulation of transcription. Histones are basic proteins rich in arginine and lysine residues which form the nucleosomal core. Histone modifications like acetylation, methylation, phosphorylation, etc. have broadened the horizon for researchers to study epigenetics more in detail. Histone methyl transferases and histone demethyl transferases are enzymes which add or remove methyl groups on histone lysine and arginine residues respectively. In this study a jumonji domain containing putative histone demethyltransferase has been shown to be responsible in controlling flowering phenotype …
Competition Control In Mid-Rotation Loblolly Pine (Pinus Taeda L.) Stands, Nicholas Tristian Biasini
Competition Control In Mid-Rotation Loblolly Pine (Pinus Taeda L.) Stands, Nicholas Tristian Biasini
Theses and Dissertations
Woody competition during mid-rotation limits available nutrients to crop species. Mid-rotation competition control was evaluated to determine if applications would result in significant increase in growth. Two studies were initiated using herbicides and prescribed burning on mid-rotation loblolly pine plantations. The first study contained afforested stands in Mississippi. Combination of imazapyr and burn was applied. The second study contained reforested sites in Mississippi. Treatments consisted of imazapyr and burn, imazapyr only, burn only, and a control. Five-year post-treatment measurements for the first study showed no significant treatment differences in height, diameter, basal area, or volume growth. Nine-year post-treatment measurements for …
Effects Of Aspirin, Meloxicam, Deracoxib, And Carprofen On Platelet Function In Dogs, Kathleen Brannon Mullins
Effects Of Aspirin, Meloxicam, Deracoxib, And Carprofen On Platelet Function In Dogs, Kathleen Brannon Mullins
Theses and Dissertations
Little research has been published evaluating the effect of non-steroidal antiinflammatory drugs (NSAIDs) on platelet function in dogs. The effects of aspirin and cyclooxygenase-2 (COX-2) selective NSAIDS on platelet function were evaluated. Eight dogs received aspirin 10 mg/kg PO every 12 hours for 10 days, and then were randomly assigned to 4 groups, with each group receiving one of the following PO for 7 days in a crossover study design: carprofen 2.2 mg/kg every 12 hours, carprofen 4.4 mg/kg every 24 hours, meloxicam 0.2 mg/kg every 24 hours first day then 0.1 mg/kg every 24 hours for 6 days, or …
Effects Of Timber Harvesting On Upland Oak Forests In The Missouri Ozarks, Qi Yao
Effects Of Timber Harvesting On Upland Oak Forests In The Missouri Ozarks, Qi Yao
Theses and Dissertations
Oak decline-induced mortality and failure of oak regeneration have become a concern in upland oak forests in the Missouri Ozarks. This project investigated the effects of timber harvesting on both oak regeneration and mortality of oak residuals following a suite of harvesting treatments in the Missouri Ozarks based on the sixteen-year monitoring data from the Missouri Ozark Forest Ecosystem Project (MOFEP). On dry sites by year 10, clearcutting improved the density of oak reproduction the most, and that intermediate cutting and clearcutting increased the proportion of black oak reproduction with 2% and 3%, respectively in the composition of the forests …
Dielectrophoretic Characterization Of Particles And Erythrocytes, Soumya Keshavamurthy Srivastava
Dielectrophoretic Characterization Of Particles And Erythrocytes, Soumya Keshavamurthy Srivastava
Theses and Dissertations
Medical lab work, such as blood testing, will one day be near instantaneous and inexpensive via capabilities enabled by the fast growing world of microtechnology. In this research study, sorting and separation of different ABO blood types have been investigated by applying alternating and direct electric fields using class=SpellE>dielectrophoresis in microdevices. Poly(dimethylsiloxane) (PDMS) microdevices, fabricated by standard photolithography techniques have been used. Embedded perpendicular platinum (Pt) electrodes to generate forces in AC dielectrophoresis were used to successfully distinguish positive ABO blood types, with O+ distinguishable from other blood types at >95% confidence. This is an important foundation for exploring …