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Differences In Fatty Acid Content Of Homogenized And Non-Homogenized Milk From Holstein And Jersey Cows, Amanda Jean Frahm

Theses and Dissertations

The objective of this study was to investigate fatty acid concentrations of homogenized and non-homogenized milk from Jersey and Holstein cows. Twenty-two, lactating Holstein (n=11) and Jersey (n=11) cows were fed the same ration with Calan® gates twice daily. Jerseys were fed 25kg DM and Holsteins were fed 30 kg DM. Feed offered was adjusted daily according to previous day orts amount. Body weight and measurements, blood, and ruminal samples were collected weekly as were feed and orts samples. Ruminal fluid was collected from six Holstein and six Jersey cows weekly (n=42). Milk weights were collected daily and samples were …

Dr. Johnson's Novel Influence: Jane Austen Illuminates Concordia Discors, Heather Ann Tucker

Theses and Dissertations

The purpose of this study is to demonstrate Jane Austen’s illumination of Samuel Johnson’s moral precepts in seeking harmony in choice of life. Austen explores the various decisions of her characters and the effects of those choices on happiness through the use of free indirect discourse. Austen and Johnson both contend that marriage is a potential source of great happiness in an individual’s choice of life, and concordia discors between spouses offers the highest form of contentment in marriage. Johnson believed that the novelist had a moral duty to his or her reader to present characters with attainable virtue. Austen’s …

Kenaf Bast For Fiber Reinforced Polymer Composites, Jinshu Shi

Theses and Dissertations

Cellulosic fibers sized from the macro-scale to the nano-scale were prepared hierarchically from kenaf bast fibers using chemicals. The process began with a hermetical alkaline retting followed by a bleaching treatment. The bleached fibers were hydrolyzed using inorganic acid, from which microfibers and cellulose nanowhiskers (CNWs) were fabricated. Inorganic nanoparticle impregnation (INI) was used to treat the retted fibers for the improvement of the interfacial compatibility between the fiber and polypropylene (PP) matrix. The retted fibers and INI-treated fibers were used as reinforcement for the PP polymer composites. Film casting process was used to make CNW/PVA composites. The hermetical retting …

Characterization Of Two Genes For Resistance To Aflatoxin Accumulation In Maize (Zea Mays L.), John Erik Mylroie

Theses and Dissertations

Maize (Zea mays L.) is one of the world’s largest food crops and thus any pathogens of maize are of great importance. Aspergillus flavus is one of these pathogens and it produces a carcinogenic metabolite called aflatoxin. Efforts to reduce infection by A. flavus and subsequent aflatoxin accumulation include the development of maize lines resistant to aflatoxin accumulation. However, resistant lines that have been developed contain agronomically unfavorable traits. Gene-based markers would allow for easier transfer of resistance from resistant inbred lines into maize lines with good agronomic traits. The focus of this research was the development of gene-based markers …

Thermostability Of Sweet Whey As Influenced By Thermization And Addition Of Enzymatic Hydrolyzate Of Caseinate, Jingming Tao

Theses and Dissertations

Sweet whey is the liquid that separates from the cheese curd during manufacture of cheeses like Edam and Cheddar. Though highly nutritious, problems associated with whey utilizations include variability of desired functional attributes and lack of thermostability (TS), an attribute that is imperative in retort or pasteurization stable high protein drinks. The objective of this study was to determine the influence of pre-heat treatment (thermization) of fresh sweet whey and/or addition of casein hydrolyzate on the subsequent TS of whey protein concentrates (WPC). Fresh sweet wheys were obtained from the Mississippi State University Dairy Plant, separated, thermized for different time …

Thermoregulation, Risk, And Den Stability Influence Grizzly Bear Den-Site Selection, Nathan Steven Libal

Theses and Dissertations

Grizzly bear (Ursus arctos) den-site selection may be influenced by multiple factors at varying spatial extents. To test for hierarchical selection, I compared grizzly bear den sites (n = 21) to random locations in the Southern Lakes, Yukon at two scales: mesoscale (within 1 km of dens) and microscale (within 100 m of dens). I observed selection for den opening slope, pixel slope, soil content, and horizontal cover at the mesoscale. At the microscale, I observed selection for opening slope and horizontal cover. To further test the role of security and the sex hypothesis of sexual segregation, I compared adult …

Using Green Roofs To Mitigate The Effects Of Solar Energy On An Unconditioned Building In The Southern United States, Jason Lee Arnold

Theses and Dissertations

The urban heat island (UHI) effect is a phenomenon that results in cities being warmer than the surrounding rural areas, due to a large amount of impervious surfaces. The purpose of this study is to evaluate the effectiveness of green roofs to mitigate the effects of solar energy on a building in the southern United States. In order to test the green roofs, temperatures were monitored inside and on top of unconditioned model buildings with green and with traditional roofs. Over the course of the study, the data collected showed that green roofs provided a significant benefit for the buildings …

Variability Of Sediment Nutrients And Benthic Macro-Invertebrates In Recreational Fishing Ponds, Tyler James Stubbs

Theses and Dissertations

The overall objective of this study was to identify trends of sediment nutrients and benthic macro-invertebrates in recreational fishing ponds. The Ekman dredge and the Yabby pump, also were compared for benthic macro-invertebrate sampling effectiveness. Large ranges in the coefficient of variation for Pw (52 – 123.9), C:N (13.4 – 124), density (61.5 – 98.5), and diversity (67 – 142) indicated significant spatial variability within and among ponds. Invertebrate familial diversity was the only variable that did not show any significant temporal variation (H = 4.31, P = 0.230). Results from the gear comparison indicated no differences between the Ekman …

Study Of Food Digestion And Morphology Of Subterranean Termites From Mississippi, Timothy Joseph Arquette

Theses and Dissertations

The overall aim of this study was to provide new and updated information about subterranean termite morphology and digestive physiology. Scanning electron microscopy was used to obtain high resolution images of morphological features of the termite cuticle not discernable by light microscopy. In addition, digital scanning electron micrographs clearly show the appearance of wood particles recovered from the termite digestive tract at different stages of digestion. The ability of termites to obtain and conserve nitrogen in their diet was demonstrated by establishing whether the insect can digest chitin, as well as from determination of levels of soluble proteins and uric …

The 3d Dynamics Of The Cosserat Rod As Applied To Continuum Robotics, Charles Rees Jones

Theses and Dissertations

In the effort to simulate the biologically inspired continuum robot’s dynamic capabilities, researchers have been faced with the daunting task of simulating—in real-time—the complete three dimensional dynamics of the the “beam-like” structure which includes the three “stiff” degrees-ofreedom transverse and dilational shear. Therefore, researchers have traditionally limited the difficulty of the problem with simplifying assumptions. This study, however, puts forward a solution which makes no simplifying assumptions and trades off only the real-time requirement of the desired solution. The solution is a Finite Difference Time Domain method employing an explicit single step method with cheap right hands sides. The cheap …

Measurement Of Trace Environmental Contaminants Using Cavity Ringdown Spectroscopy, Susan Theresa Scherrer

Theses and Dissertations

Environmental contamination has become a significant threat to the health and well-being of mankind as well as to the environment, prompting the establishment and implementation of stringent environmental regulations. The ability to accurately detect and quantify contaminants, such as mercury (Hg), uranium (U), and volatile organic compounds (VOCs), in real-time, in situ is of significant importance to monitoring and remediation efforts. In an effort to develop a real-time, fast-response detector that is portable, highly sensitive, and cost efficient, this research explored the feasibility of utilizing cavity ringdown spectroscopy (CRDS) in conjunction with various plasma sources and vacuum cavities to accurately …

Functional Characterization Of The Ocfc Gene And Optimization Of Medium Components And Culture Condition For Occidiofungin Production By Burkholderia Contaminans Strain Ms14, Kuan-Chih Chen

Theses and Dissertations

he 56-kb ocfC gene cluster is required for occidiofungin production by Burkholderia contaminans strain MS14. However, the function of the ocfC gene remains unknown. Sequence analysis showed the putative protein encoded by ocfC shares significant identities to glycosyltransferase. Plate bioassays showed that occidiofungin production by the ocfC mutant (ocfC::nptII) was significantly reduced as compared with strain MS14. The occidiofungin produced by the ocfC mutant is xyloseree, which suggests the ocfC gene encodes a xylosyltransferase to add a xylose to the peptide backbone. Single variant optimization of culture condition and medium compositions was also performed in this study. The results indicated …

Human Predation Risk Effects On Adult, Male White-Tailed Deer Antipredator Behavior, Andrew Richard Little

Theses and Dissertations

Recreational hunters play an important role in managing white-tailed deer (Odocoileus virginianus); however, the potential for deer to alter behaviors to avoid hunters has not been addressed within the risk-allocation hypothesis. I evaluated magnitude (i.e., hunter density) and temporal variation (i.e., time of day and initial and prolonged exposure) in human predation risk on movements, resource selection, and observation rates of 37 adult male deer in southern Oklahoma. Deer recognized human predation risk by increasing diel path complexity and use of security cover with greater hunter density. Moreover, deer reduced movement rates and tortuosity while seeking out areas with security …

Hydrolysis Of Organophosphate And Model Substrates In African American And Caucasian Southerners By Serum Paraoxonase-1 (Pon1) And Its Relationship To Atherosclerosis, Ryan Hunter Coombes

Theses and Dissertations

Paraoxonase-1 (PON1) is a high density lipoprotein (HDL)-associated enzyme displaying esterase and lactonase activity. PON1 hydrolyzes the oxons of several organophosphorous insecticides (e.g. paraoxon, diazoxon and chlorpyrifos-oxon) and metabolizes lipid peroxides of low density lipoproteins (LDL) and HDL. As such, PON1 plays a relevant role in determining susceptibility of organophosphate toxicity and cardiovascular disease. The objective of this study was to determine associations of PON1 status (i.e. genotype and activity levels) with atherosclerosis (ATH) in individuals from the Southeastern United States. An additional objective was to determine whether PON1 genotype and/or PON1 activity levels influence the capacity of PON1 to …

Gains In Fluency Measures During Study Abroad In China, Jeongwoon Kim

Theses and Dissertations

This thesis study investigates gains in the speaking of China study abroad (SA) students from Brigham Young University. Pre-and post-program Simulated Oral Proficiency Interview (SOPI) tasks were used to generate multiple fluency measures, such as native judges' subjective fluency ratings, word count, number of unique words, number of filler words, mean pause length, tonal accuracy, etc. The study results display significant differences between pre- and post-tests for all fluency measures. In other words, China SA students were perceived to be more fluent in their speech by native judges after SA; their speech samples show more word (token and type) production, …

Development Of A Novel Approach To Assess Qualitative And Quantitative Dynamics Associated With The Subcutaneous Or Intramuscular Administration Of Pharmaceuticals And Associated Parenteral Delivery Systems, Eric Edwards

Theses and Dissertations

There has been a significant increase in the number of injectable pharmaceutical products over the last decade that have been incorporated into unique delivery systems such as pen injectors, auto-injectors, or pre-filled syringes. The advancement of these delivery systems and the paradigm shift towards administration of injectables in the out-of-hospital or home setting have introduced variables that can affect the bioavailability of injectable drugs and potential pharmacologic outcomes. An approach that allows for the qualitative and quantitative dispersion assessment of an injectable at the moment of tissue deposition coupled with an assessment of systemic exposure parameters could provide substantial information …

A Hierarchical Image Processing Approach For Diagnostic Analysis Of Microcirculation Videos, Nazanin Mirshahi

Theses and Dissertations

Knowledge of the microcirculatory system has added significant value to the analysis of tissue oxygenation and perfusion. While developments in videomicroscopy technology have enabled medical researchers and physicians to observe the microvascular system, the available software tools are limited in their capabilities to determine quantitative features of microcirculation, either automatically or accurately. In particular, microvessel density has been a critical diagnostic measure in evaluating disease progression and a prognostic indicator in various clinical conditions. As a result, automated analysis of the microcirculatory system can be substantially beneficial in various real-time and off-line therapeutic medical applications, such as optimization of resuscitation. …

Giants, Dragons, And The Confrontation With "Den Schrecklichen Mystischen Naturkomplexen" – Apocalyptic Intertextuality In Alfred Döblin's Berge Meere Und Giganten, Nathan J. Bates

Theses and Dissertations

Berge Meere und Giganten (BMG) by Alfred Döblin is a fictional account of future events in which humanity brings about the ruin of western civilization by its own technological hubris. Although BMG has been examined considerably for its literary merit in light of the Döblin corpus, few scholars have identified Döblin's work as an apocalyptic text especially after the Judeo-Christian tradition. The apocalyptic nature of BMG implies a profound religious experience on the part of the author, which in my view offers at least one plausible explanation for Döblin's repeated fixation with BMG. In my thesis, I explicate the …

Using Design Layers Model To Develop Computer-Based Training For The Center For Teaching And Learning's Usability Center, Matthew B. Guinn

Theses and Dissertations

The Usability Center training course is an instructional resource for BYU faculty, employees, and students to prepare them to effectively use the BYU Usability Center. This document describes the process and results of analyzing, designing, developing, implementing, and evaluating the Usability Center training course. By taking this course, participants learn the basics of planning, piloting, executing, and reporting their usability activities and the skills prerequisite to using BYU's Usability Center.

The Reconstruction Of Historical Buildings: A Visitor And Historical Site Study, Alyssa Holland

Theses and Dissertations

The reconstruction of historical buildings has been debated by preservationists, archeologists and historians, both with each other and within their own fields. But no matter how intensely scholars discuss and disagree on the subject, professionals at historic sites still continue to reconstruct historical buildings. The questions surrounding historical reconstruction include: is it ethical to reconstruct historical buildings? Is it worthwhile to reconstruct historical buildings for the benefit of the general public? I surveyed historical site workers from across the country and visitors from Red Hill National Memorial, the last home of Patrick Henry. From the survey, visitors seem to remember …

Identifying Modulators Of The Development Of Acute Functional Tolerance To Ethanol In Caenorhabditis Elegans., Ka-Po Leung

Theses and Dissertations

Alcohol abuse is a problem in our society. There are few treatments available, in part due to the unclear molecular mechanisms of ethanol’s effects. Human studies indicate that there is a genetic component influencing disease susceptibility, and that an individual’s initial response to alcohol can predict their development of addiction. We have taken a forward genetics approach to study one component of initial response, acute functional tolerance (AFT), in Caenorhabditis elegans. We identified bet11, a mutation that causes animals to be defective in the development of AFT. Genetic analysis suggested that the gene that bet11 disrupts participates in a synthetic …

The Portable Art Gallery: Facilitating Student Autonomy And Ownership Through Exhibiting Artwork, Jethro D. Gillespie

Theses and Dissertations

In an attempt to help a class of high school AP Studio Art students find a more authentic sense of autonomy and ownership with their own art projects, the author has constructed a portable art gallery space designated for the exhibition of student artwork. Through a theoretical framework of post-structuralism, as well as a hybrid methodological approach, including tenets of both action research and grounded theory, he was able to explore how de-centralizing traditional, pedagogical notions of power in the classroom and utilizing contemporary art education practices affected AP Studio Art students' experience in the art classroom. By placing an …

Healthcare Acquired Infection Risk And Toothbrush Contamination In The Icu., Michelle Frazelle

Theses and Dissertations

Healthcare acquired infections (HAIs) are a complex and multi-factorial problem associated with high morbidity, mortality, and cost. Toothbrushes (TBs) may be at risk for contamination with potential pathogenic microorganisms (PPMs) from the patient care environment or autoinnoculation from the patient. We focused on three PPMs: multiply resistant Staphylococcus aureus (MRSA), vancomycin resistant Enterococcus (VRE), and Acinetobacter. Specific aims were to (1) describe environmental factors associated with TB contamination in the ICU; (2) describe the relationship between TB contamination and oral colonization in critically ill adults.

Designed Synthesis Of Halogenated Borazine-Linked Polymers And Their Applications In Gas Storage And Separation, Thomas Reich

Theses and Dissertations

The synthesis of highly porous organic polymers with predefined porosity has attracted considerable attention due to their potential in a wide range of applications. Of particular interest in porous organic polymers is their potential use in automotive applications as well as separation processes whereby advancements could result in a reduction in carbon dioxide emissions and the production of natural gas in a more economically friendly manner. Along these pursuits, seven borazine-linked polymers (BLPs) have been synthesized through the introduction of p-phenylenediamine, 1,3,5-tris-(4-aminophenyl)benzene, benzidine, or tetra-(4-aminophenyl)methane with boron tribromide or boron trichloride followed by the thermolysis reaction of the resulting in …

Woody Encroachment Mechanisms Of A Symbiotic N-Fixing Shrub: Ecophysiology, Facilitation, And Resource Use Efficiency, Jaclyn Vick

Theses and Dissertations

Causes and consequences of woody encroachment into grass dominated systems have been widely studied, however functional mechanisms which promote encroachment are largely unknown. Many expansive woody species are shrubs with rhizobial or actinorhizal N-fixing symbiotic associations. Morella cerifera L. (Myricaceae) is an actinorhizal N-fixing shrub which rapidly expands into grasslands on the barrier islands off the coast of Virginia, USA. The objective of this research was to determine physiological drivers of woody encroachment resulting in increased woody cover of M. cerifera on Southeastern, US barrier islands. Variations in physiology and resource use efficiencies (RUE) of M. cerifera and co-occurring shrubs …

Amyloid-Β Dependent Microgliosis Occurs Through Src Kinase Activation In Alzheimer's Disease, Gunjan Dhawan

Theses and Dissertations

The major histopathologic hallmark of Alzheimer’s disease (AD) is the presence of (3-amyloid plaques that are often associated with reactive microglia in the brain. It has been suggested modulating the microglial phenotype to attenuate an inflammatory response may prove to be useful in determining therapies for prevention or delay of the disease. My dissertation supports he hypothesis that Ap stimulates microglial activation through a specific tyrosine kinase-dependent response involving the Src kinase family. Using primary mouse microglia we observed that both fibrillar and oligomeric Ap stimulated increased microglial protein phosphotyrosine levels including active levels of the kinase Src and a …

Sign Language Word List Comparisons: Toward A Replicable Coding And Scoring Methodology, Jason Parks

Theses and Dissertations

This study describes and evaluates a methodology for sign language word list comparisons. The purpose of this sociolinguistic research tool is to identify similarity relationships among sign language varieties by assessing similarities of lexical items. Similarities are calculated using the Levenshtein distance metric which measures the number of differences between signs.

In this study, the methodology was refined for optimal efficiency through an analysis of: which parameters of a sign should be compared, which values should be included in each parameter value inventory, and which items should be used in the word list. As a result of the study, I …

Intraoperative Pain Management: Attenuating Postoperative Pain In Pediatric Patients, Alicia M. Wolfgram

Theses and Dissertations

More than 5 million children undergo surgery in the United States each year, and it is estimated that up to 75% (3.75 million) of them experience significant postoperative pain (Fortier, MacLaren, Martink, Perret-Karimi, & Kain, 2009). While we have come a long way in our knowledge of pain in children, it is often found that pain is inadequately assessed and treated. Aside from the cost associated with increased utilization of medical visits, psychological implications (anxiety, avoidance, sleep disturbances), and increased parental distress related to pediatric pain, there are many physiologic changes associated with pain that may delay or prevent wound …

General Anesthetics And The Developing Brain, Tracy A. Stanz

Theses and Dissertations

Millions of children undergo seemingly safe general anesthesia and sedation to facilitate procedures located in surgery, imaging suites, radiology suites, emergency departments, and intensive care units. With appropriate doses and administration, anesthetics are thought to be fully reversible and free from lasting harm. However, those assumptions are being challenged with recent research documenting anesthesia-induced neurotoxicity with subsequent neurological sequelae. A comprehensive literature review will be performed using medical databases including CINAI-IL, Google Scholar, Medline, and PubMed. The information gathered will be presented at the North Dakota Association of Nurse Anesthetists bi-annual meeting in Bismarck, North Dakota and to the anesthesia …

Lipid Emulsion Therapy As Treatment For Local Anesthetic Systemic Toxicity, Nina R. Wentz

Theses and Dissertations

Local anesthetic systemic toxicity, due to misapplication of local anesthetic in an otherwise routine procedure, can result in deleterious effects. Although improved regional anesthesia techniques, effective test-dosing, and availability of less toxic local anesthetics have resulted in a decline in local anesthetic toxicity rates, adverse events do occur. A comprehensive review of literature was conducted and current research findings and documented case studies were systematically reviewed. The "lipid sink" phenomenon is the most widely accepted theoretical framework surrounding intravenous lipid emulsion treatment for local anesthetic induced cardiovascular collapse (Rothschild, Bern, Oswald, & Weinberg, 2010). Current evidence suggests that immediate infusion …