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Toward A Molecular Mechanism Of Phase Separation In Disordered Elastin-Like Proteins, Yue Zhang Dec 2017

Toward A Molecular Mechanism Of Phase Separation In Disordered Elastin-Like Proteins, Yue Zhang

Theses and Dissertations

Since the last decade, an increasing number of proteins have been shown to be capable of undergoing reversible liquid-liquid phase separation (LLPS) in response to an external stimulus, and the resulting protein-rich phase (coacervate) is considered as one of the main components of membrane-less organelles. Most of these proteins are intrinsically disordered proteins (IDPs) or contain intrinsically disordered regions. More importantly, LLPS often plays an important role in cellular signaling and development of cells and tissues. However, the molecular mechanisms underlying LLPS of proteins remain poorly understood. Elastin-like proteins (ELPs), a class of IDPs derived from the hydrophobic domains of …

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Skeletal Blast Trauma: An Application Of Clinical Literature And Current Methods In Forensic Anthropology To Known Blast Trauma Casualties, Petra Banks Dec 2017

Skeletal Blast Trauma: An Application Of Clinical Literature And Current Methods In Forensic Anthropology To Known Blast Trauma Casualties, Petra Banks

Theses and Dissertations

In order to examine the feasibility of assessing blast event conditions from bone and to distinguish blast trauma from aircraft crash trauma, this study attempts to determine if the observations made in clinical research are mirrored in skeletal remains of individuals who died in blast events. Research was conducted by assessing the frequency of different forms of trauma and their comparison to aircraft crash trauma, the directionality of trauma, and open-air versus enclosed blast trauma. Data consisted of historic and forensic anthropology reports of individuals who died from blast events and aircraft crashes from the Defense POW/MIA Accounting Agency (DPAA). …

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The Effect Of Controlling Temperature And Relative Humidity On Tyrophagus Putrescentiae (Schrank) (Sarcoptiformes: Acaridae) Infestations On Dry Cured Hams Treated In Food Grade Ingredient Infused Nets, Jasmine Deneen Hendrix Dec 2017

The Effect Of Controlling Temperature And Relative Humidity On Tyrophagus Putrescentiae (Schrank) (Sarcoptiformes: Acaridae) Infestations On Dry Cured Hams Treated In Food Grade Ingredient Infused Nets, Jasmine Deneen Hendrix

Theses and Dissertations

Since methyl bromide is an ozone depleting substance, there is a significant need to find effective alternative compounds to control mite infestations on dry cured hams. Therefore, the objective of this study was to determine the most effective relative humidity and/or temperature to minimize mite reproduction and mold growth on dry cured hams in untreated and food grade ingredient infused nets. Mites on ham slices in untreated nets were reduced from the initial inoculum level of 50 mites per ham slice when exposed to 85% RH at 24, 28, and 32°C. Results indicated that hams should be stored at 85% …

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Efficacy Of Novel Pyridinium Oximes In Preventing Neural Damage, Charles Andrew Leach Dec 2017

Efficacy Of Novel Pyridinium Oximes In Preventing Neural Damage, Charles Andrew Leach

Theses and Dissertations

Organophosphates are neurotoxic compounds that inhibit acetylcholinesterase producing excess cholinergic stimulation. This produces various toxic signs including excitotoxic neuronal damage. Oximes can be used as a treatment for organophosphate poisoning by reactivating inhibited acetylcholinesterase. Traditional oximes do not penetrate the blood-brain barrier, limiting protection of the central nervous system. Novel, brain-penetrating oximes have the potential to protect the brain from organophosphate induced damage. Adult male rats were used to examine the ability of model organophosphates to produce neuropathology and the ability of novel oximes to prevent this damage. Additionally, adult male rats were used to examine changes in gene expression …

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A Correlation Study On Soil Selenium Content And Diabetes Mellitus In Contiguous United States, Yang-Chih Tsao Dec 2017

A Correlation Study On Soil Selenium Content And Diabetes Mellitus In Contiguous United States, Yang-Chih Tsao

Theses and Dissertations

Selenium, the essential trace element, is well known as its antioxidant function, antiviral properties, and its anti-inflammatory function to human health. The relationships between selenium status and diabetes mellitus have been widely studied, but the consistency of results is lacking. This study used diagnosed diabetes incidence from year 2004 to 2012 and soil selenium content by counties within 48 contiguous states in the U.S. with Generalized Linear Mixed Model- R-Side as the major statistical method to determine whether there is a significant correlation or not. Results showed that the diagnosed diabetes population had been increased from 2004 to 2012 for …

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Characterization Of Type Vi Secretion System In Edwardsiella Ictaluri, Safak Kalindamar Dec 2017

Characterization Of Type Vi Secretion System In Edwardsiella Ictaluri, Safak Kalindamar

Theses and Dissertations

Edwardsiella ictaluri causes enteric septicemia of catfish (ESC), which is one of the most important bacterial diseases causing significant economic losses in the US catfish industry. Understanding the virulence mechanisms of E. ictaluri plays a vital role to develop preventives, such as vaccines for the disease. Therefore, further research is necessary to discover the new virulence mechanisms of this pathogen. The long-term goal of our group is to determine the mechanism of E. ictaluri pathogenesis and to develop effective live attenuated vaccines against ESC. The overall goal of this project is to understand the role of Type 6 secretion system …

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Demographic Variables As Predictors Of Seclusion And Restraints For Adult Psychiatric Inpatients, Oya Weston Hampton Dec 2017

Demographic Variables As Predictors Of Seclusion And Restraints For Adult Psychiatric Inpatients, Oya Weston Hampton

Theses and Dissertations

In psychiatric settings, the use of seclusion and/or restraints can be emotionally and psychologically traumatizing for patients. Patients often experience these interventions as inhumane and humiliating, and such interventions can have physical and mental adverse effects and in some cases can be fatal. This study examined the role of demographic, clinical, and hospital variables in predicting seclusion and/or restraint episodes in adult psychiatric inpatients. A total of 395 patients were included in the study. Adult psychiatric inpatients previously restrained (n = 91) were compared to psychiatric inpatients never restrained (n = 304). A binary logistic regression research design was used …

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Differences In Survival Of Heat Stress Adapted Cells Of Listeria Monocytogenes Egd (Bug600) In Disinfectants And Essential Oils, Amruta Udaysinh Jadhav Dec 2017

Differences In Survival Of Heat Stress Adapted Cells Of Listeria Monocytogenes Egd (Bug600) In Disinfectants And Essential Oils, Amruta Udaysinh Jadhav

Theses and Dissertations

The objective of this study was to investigate the differences in survival of L. monocytogenes EGD (Bug600) (serotype 1/2a) in various disinfectants and essential oils after sublethal heat stress at 48°C for 60 min. The survival of heat stressed L. monocytogenes cells was decreased in lethal acid (HCl or H3PO4 pH 2.5), lethal oxidative stress (H2O2 1000 ppm) and lethal quaternary ammonium compounds (QAC 2.5-3.5 ppm) compared to non-stressed control cells. By contrast, the survival of heat stressed L. monocytogenes cells was higher in lethal alkali (NaOH or KOH pH 12) than the control cells. Also, the survival of heat …

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Dry Reforming Of Methane To Produce Syngas Over Ni-Based Bimodal Pore Catalysts, Zhenghong Bao Dec 2017

Dry Reforming Of Methane To Produce Syngas Over Ni-Based Bimodal Pore Catalysts, Zhenghong Bao

Theses and Dissertations

Dry reforming of methane is an important reaction to generate syngas from two greenhouse gases. The syngas can be used in Fishcher-Tropsch synthesis to produce valueded chemicals. Chapter I reviews the catalytic conversion of methane and carbon dioxide to syngas, including DRM reaction chemistry, catalysts used in this process, catalyst deactivation, and the kinetics of DRM reaction. Chapter II discusses the development of bimodal pore NiCeMgAl catalysts for DRM reaction. Bimodal pore NiCeMgAl catalysts were synthesized via the refluxed co-precipitation method and systematically investigated the influence of active metal loading, calcination temperature, reduction temperature and gas hourly space velocity (GHSV) …

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Ecology And Conservation Of Bird Assemblages In Native And Afforested Environments In The Northern Campos Grasslands Of Uruguay, Juan Andrés Martínez Lanfranco Dec 2017

Ecology And Conservation Of Bird Assemblages In Native And Afforested Environments In The Northern Campos Grasslands Of Uruguay, Juan Andrés Martínez Lanfranco

Theses and Dissertations

Commercial forestry has expanded across the Rio de la Plata Grasslands (RPG) of South America in recent decades. I conducted a resource-use based study on bird communities during the 2013-2014 austral breeding season in northern Uruguay. I assessed relationships between habitat types and bird abundance as a function of vegetation structure. To compare avian responses to treatments, I included native environments, pine and eucalyptus plantations of different ages and thinning regimes. I detected differences in species richness and composition and species-specific responses in abundance along structural gradients sampled. Although poorer in species than native habitat types, tree plantations were extensively …

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Effect Of Water Temperature, Angling Time, And Dissolved Oxygen Concentration On The Survival Of Angled And Tournament-Handled Largemouth Bass, Kevin Randy Keretz Dec 2017

Effect Of Water Temperature, Angling Time, And Dissolved Oxygen Concentration On The Survival Of Angled And Tournament-Handled Largemouth Bass, Kevin Randy Keretz

Theses and Dissertations

Largemouth Bass Micropterus salmoides is the most sought after species by recreational anglers in the United States. Survival of angled and tournament-handled Largemouth Bass is related to numerous factors; however, the independent effects of water temperature, angling time, and live well dissolved oxygen concentration on survival have not been measured. Survival was evaluated in simulated catch and release and tournament trials over the range of temperatures encountered by Largemouth Bass anglers (17-33°C) while also testing independent effects of angling time, live well temperature, and live well dissolved oxygen treatments. Caught-and-released Largemouth Bass experienced 100% survival at temperatures ≤33°C after 1 …

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Transcriptome-Wide Prevalence Of Selection Among Wild Populations Of Helianthus Annuus (Common Sunflower), Michael Emmett Kartje Dec 2017

Transcriptome-Wide Prevalence Of Selection Among Wild Populations Of Helianthus Annuus (Common Sunflower), Michael Emmett Kartje

Theses and Dissertations

In the present study, I used transcriptomic data to elucidate the role of selection in maintaining genetic cohesion and promoting divergence among wild populations of the annual sunflower Helianthus annuus. I observed that nearly half of the loci displaying high levels of population structure (44%) show allele frequency spectrum skew consistent with recent exposure to natural selection. Among transcriptomic regions at which allele frequency divergence is lowest, fewer loci maintain strong signals of selection (34%). Additionally, I find evidence supporting the maintenance of evolutionarily complex haplotype structure within populations at loci showing high levels of among-population allele frequency divergence.

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Development Of Herbicide Tolerant Tomato, Gourav Sharma Dec 2017

Development Of Herbicide Tolerant Tomato, Gourav Sharma

Theses and Dissertations

Tomato is a major horticulture crop grown across the globe. Unfortunately, its yield is reduced by 25% because of auxin herbicides and glyphosate drift. In this present study, wild germplasm of tomato was screened for herbicide tolerance. From the greenhouse study nine accessions for glyphosate and 2,4-D, eleven accessions for dicamba, five accessions for quinclorac, eight accessions for aminocyclopyrachlor, and two accessions for picloram and aminopyralid were identified to be tolerant. A few accessions were selected from each herbicide tolerant group for field trials at two locations in Mississippi in 2016 and 2017. Results indicated that TOM18 was most tolerant …

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Imaging Calcium Carbonate Crystallization In Association With Organic Compounds, Maurice Philip Testa Dec 2017

Imaging Calcium Carbonate Crystallization In Association With Organic Compounds, Maurice Philip Testa

Theses and Dissertations

The objective of this study is to better understand the relationship between organic compounds and carbonate mineral growth in different natural environments by imaging the interface between organic compounds and carbonate precipitates in ancient and modern rocks, and laboratory experiments. Three separate projects were designed to document the organic/carbonate mineral interface through imagery. 1) Images of the interfaces between organic components and initial mineral precipitates were investigated in a deteriorating microbial mat from Vermelha, Brazil that was taken from the site in 2006. As the mat deteriorated the amount of calcification increased. A section of the transitional section between living …

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Listeria Monocytogenes Response To Sublethal Sodium Hypochlorite Induced Oxidative Stress On Its Biofilm Forming Ability And Antibiotic Resistance, Mohit Bansal Dec 2017

Listeria Monocytogenes Response To Sublethal Sodium Hypochlorite Induced Oxidative Stress On Its Biofilm Forming Ability And Antibiotic Resistance, Mohit Bansal

Theses and Dissertations

Listeria monocytogenes response to oxidative stress by sublethal sodium hypochlorite was investigated in this study. Continuous exposure of sublethal chlorine influenced biofilm formation and stress adaptation (homologous and heterologous) in L. monocytogenes. The biofilm forming ability of oxidative stress adapted and control cells were investigated on polystyrene surface at 22°C and 37°C. The oxidative stress adapted cells were found to form less biofilm in the presence of chlorine (p < 0.10) when compared to non-treated control cells at both the temperatures. In addition, the biofilm forming ability of L. monocytogenes was reduced significantly at higher sublethal chlorine concentrations (p < 0.10). In conclusion, oxidative stress adapted L. monocytogenes has developed tolerance to chlorine and some of the antibiotics. However, oxidative stress those cells did demonstrate an antibiofilm effect. This demonstrates that oxidative stress reduces L. monocytogenes biofilm formation but can also increase antibiotic resistance.

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Regulation Of Stomata Opening In The Crassulacean Acid Metabolism Plant Kalanchoe Laxiflora, Anoud Abdulmalik Albader Dec 2017

Regulation Of Stomata Opening In The Crassulacean Acid Metabolism Plant Kalanchoe Laxiflora, Anoud Abdulmalik Albader

Theses and Dissertations

Stomata are small pores that are located on the surface of epidermal leaves, and they can regulate the uptake of CO2 and prevent water lose by opening and closing the pores. Stomata of plants can be regulated by external condition such as CO2, biotic and abiotic stresses and internal factors. CAM (crassulacean acid metabolism) plants adapt to hot and dry environments by closing stomata during the day and opening stomata during the cool night. However, it is still unclear how CAM plants open their stomata during the night and close them during the day. In this study, a number of …

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Formulation Of Whey Protein Stabilized Multilayered Microemulsion And Nanoemulsion Systems With Hyperoxidative Curcumin, Soma Mukherjee Dec 2017

Formulation Of Whey Protein Stabilized Multilayered Microemulsion And Nanoemulsion Systems With Hyperoxidative Curcumin, Soma Mukherjee

Theses and Dissertations

A primary emulsion with whey protein isolate (WPI) and hexanoic acid was prepared, and chitosan (Ch) (0.01%, 0.02%, and 0.03%) was added to evaluate its impact on particle size distribution of the emulsion. NaCl (0, 20, 40, and 80 mM) was added to increase ionic interactions to stabilize the multilayer emulsion. Lecithin (0.5%, 1%, 2%, 3 %, w/v) was mixed with the primary emulsion in order to form a multilayer, and casein hydrolysate (CH) was used to stabilize the tertiary emulsion system without the use of NaCl for 28 d at 4 °C. Stable O/W nanoemulsions were generated for use …

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An Analysis Of Signaling Processes Leading To A Defense Response In Soybean, Brandon Trey Mcneece Dec 2017

An Analysis Of Signaling Processes Leading To A Defense Response In Soybean, Brandon Trey Mcneece

Theses and Dissertations

Plant-parasitic nematodes are the cause of devastating yield loss in vital agricultural crops around the world. Heterodera glycines, also referred to as soybean cyst nematode, is the main pathogen of Glycine max (soybean) causing more loss than all other pathogens of G. max combined. The resultant economic impact due to H. glycines in United States soybean production alone is estimated to account for an annual one-billion-dollar loss. Natural resistant genotypes have been found in trials to combat this pathogen. Of the resistant varieties identified, G. max[Peking/PI 548402] and G. max[PI 88788] are the major sources of resistance. Identification of genes …

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An Application Of Roger Ulrich's Methods: Designing A Healing Garden For African American Women Living In Low-Income Public Housing, Juriel Annishia Rogers Dec 2017

An Application Of Roger Ulrich's Methods: Designing A Healing Garden For African American Women Living In Low-Income Public Housing, Juriel Annishia Rogers

Theses and Dissertations

The purpose of this preference study is to identify the effects that the presence of a healing garden may have, on the perceived stress of African American women living in in low-income public housing. Literature states that women who live in public housing experience higher rates of malnutrition, fatigue, susceptibility to infection, and premature death (Adler et al., 1994; Whelch and Kneipp, 2005). Few of these studies address healing gardens as solutions. The explanation of behavior while visiting a healing garden in this study will help to identify particular aspects of gardens that are perceived as therapeutic. This research compared …

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An Oral History & Literary Review Of Edward Blake Jr.: Exploring The Evidence Of A Principled Practice, Hans Curtis Herrmann Dec 2017

An Oral History & Literary Review Of Edward Blake Jr.: Exploring The Evidence Of A Principled Practice, Hans Curtis Herrmann

Theses and Dissertations

This thesis is a study of oral histories and literary records covering the professional development and works of Edward Blake Jr., ASLA, (1947-2010). The study considers Blake’s design principles via newly collected oral histories and a review of his literary record within the continuum of landscape architecture history from 1970 to 2010. Additionally, the study explores Blake’s position within the ecological design community to establish his status as a possible founding voice of ecologically focused landscape architecture practice in the Coastal Plains Region of the southeastern United States. The primary sources include a newly developed oral history collection with questionnaire-based …

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Sperm Genetic And Epigenetic Mechanisms Regulating Male Fertility, Naseer Ahmad Kutchy Dec 2017

Sperm Genetic And Epigenetic Mechanisms Regulating Male Fertility, Naseer Ahmad Kutchy

Theses and Dissertations

Male fertility, ability to fertilize and activate the egg and support early embryo development, is crucial for mammalian reproduction and development. Testis specific histone 2B (TH2B) of sperm, protamines (PRM1/2), and posttranslational modifications of histone 3 (H3K27me3 and H3k27ac) are involved in spermatogenesis and male fertility. However, molecular and cellular mechanisms by which TH2B regulates histone to protamine replacement is poorly defined. Immunocytochemistry, western blotting, flow cytometry, computer-assisted sperm analysis (CASA) and bioinformatic approaches were applied to analyze sperm from Holstein bulls with different in vivo fertility. Results from the immunocytochemistry experiments showed that while TH2B and H3K27me3 were localized …

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Spatiotemporal Variation In Space Use By Eastern Wild Turkeys In Mississippi, Ryo Ogawa Dec 2017

Spatiotemporal Variation In Space Use By Eastern Wild Turkeys In Mississippi, Ryo Ogawa

Theses and Dissertations

Spatiotemporal variation in animal space use is critical for understanding how individual animals respond to changes in resource availability across space and time. My study was aimed to: 1) determine functional responses of habitat selection by eastern wild turkeys (Meleagris gallopavo silvestris) across 7 study sites in Mississippi; and 2) determine the effect of temporal vegetation variation on order-II habitat selection by wild turkeys over 12 years. I developed resource selection functions using radio telemetry location data. Individual-specific coefficients of order-III habitat selection for forest were related inversely to forest availability in meta-regressions. Yearly coefficients of order-II habitat selection for …

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The Application And Exploration Of The City Biodiversity Index Through A Case Study Of The City Of Starkville, Mississippi, Leslie Rhea Moma Dec 2017

The Application And Exploration Of The City Biodiversity Index Through A Case Study Of The City Of Starkville, Mississippi, Leslie Rhea Moma

Theses and Dissertations

During the 21st century, more people will reside in cities than in rural areas for the first time in human history. As cities expand to accommodate their growing population, pressure is mounting on local biodiversity and the ecosystems they support. This prompted the U.N. Convention on Biological Diversity - in collaboration with the City of Singapore - to develop a biodiversity index specifically for cities. In 2014, the final draft of the City Biodiversity Index was released. Twenty-three indicators comprise three categories that assess: native biodiversity, ecosystem services, and municipal support for local biodiversity. A case-study was designed for Starkville, …

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The Defense Response Of Glycine Max To Heterodera Glycines And Macrophomina Phaseolina, Bisho Ram Lawaju Dec 2017

The Defense Response Of Glycine Max To Heterodera Glycines And Macrophomina Phaseolina, Bisho Ram Lawaju

Theses and Dissertations

The understanding of plant defense response in plant-pathogen interaction provides useful information to combat the disease. Soybean cyst nematode (SCN), Heterodera glycines, and charcoal rot causing fungus, Macrophomina phaseolina, are major pathogens of soybean, Glycine max, and infestation with SCN has found to aggravate the fungal disease severity. The gene expression analysis in resistant and susceptible interactions between H. glycines and G. max has identified some candidate resistance genes and signaling pathways but they are yet to be fully characterized. This dissertation aims to characterize one such gene, Conserved Oligomeric Golgi (COG) complex. The COG complex is important in structural …

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The Effects Of Institutional Structure Of Predominantly White Land-Grant Colleges And Universities In The Southeast On African American Graduation Rates In Engineering, Angela Denice Clinkscales Verdell Dec 2017

The Effects Of Institutional Structure Of Predominantly White Land-Grant Colleges And Universities In The Southeast On African American Graduation Rates In Engineering, Angela Denice Clinkscales Verdell

Theses and Dissertations

The U.S. Department of Labor reports that only 5% of U.S. workers are employed in fields related to science and engineering, yet they are responsible for more than 50% of our sustained economic expansion (U.S Department of Labor, 2007). Furthermore, minorities makeup 0.0025 % (1/400) of that Science, Technology, Engineering, and Mathematics (STEM) workforce. Methods are currently underway to understand and address the attrition of minority students in the STEM workforce. The problem of underrepresentation of minorities (URMs) in STEM careers continues to result in a “leaky pipeline” where URMs have cited institutional factors such “chilly campus” climates as barriers …

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Incorporating Fermented By-Products Of Lactobacillus Diolivorans Sp. In Food Grade Coatings Designed For Inhibition Of Tyrophagus Putrescentiae On Dry-Cured Hams, Hector Asis Portillo Dec 2017

Incorporating Fermented By-Products Of Lactobacillus Diolivorans Sp. In Food Grade Coatings Designed For Inhibition Of Tyrophagus Putrescentiae On Dry-Cured Hams, Hector Asis Portillo

Theses and Dissertations

Distillate solutions that were derived from concentrated ferment were incorporated into either a carrageenan (CG) and propylene glycol alginate (PGA) gum blend or into a CG, PGA, and xanthan gum (XG) blend. Distillate treatments were compared against a 10% propylene glycol treatment, a gum only control, and negative control using three hams that were cut into 2.5 cm thick slices and then cut into 2.5×2.5×2.5cm cubes (n=50) that were dipped into solutions prior to conducting mite bioassays. Coated and control ham cubes were inoculated with 20 adult mites from the species T. putrescentiae (Schrank), and incubated for 2 and 3 …

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Management Practices For Corn Producers Implementing Early Planting As A Production Strategy, Matthew W. Hock Dec 2017

Management Practices For Corn Producers Implementing Early Planting As A Production Strategy, Matthew W. Hock

Theses and Dissertations

Producers choosing to implement an early corn planting management strategy often experience several yield limiting biotic and abiotic factors. Field variability, flooding, sub-optimal soil temperatures which leads to poor nutrient uptake, delayed emergence and reduced root growth can limit grain production. Three separate experiments were conducted to address some of the negative effects associated with early corn planting. Experiment 1 evaluated flooding effects on several morpho-physiological traits including root system architecture during early crop development. Hybrids (DKC 6208, Pioneer 1197) were flooded at planting (V0) and growth stages V1, V2, V3 for 0, 6, 12, 24, 48, 96 hours. Plants …

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Role Of Rap1a In Age/Rage-Mediated Signaling In Type Ii Diabetes Mellitus, Jia Zhao Dec 2017

Role Of Rap1a In Age/Rage-Mediated Signaling In Type Ii Diabetes Mellitus, Jia Zhao

Theses and Dissertations

Type II diabetes mellitus (TIIDM) causes multiple complications under chronic hyperglycemia. Long term persistent exposure to elevated glucose conditions is considered one of the major factors for diabetic complications. Pathologically, mechanical and biochemical stimuli will induce a signaling cascade in cardiac fibroblasts, which causes myocardial fibrosis and leading to ventricular stiffness. Non-enzymatically, high levels of glucose can react with long-lived proteins, such as collagen to form advanced glycation end-products (AGEs). AGEs have been shown to be associated with many of the diabetic cardiovascular complications due to their interaction with the receptor for AGE (RAGE). AGE/RAGE activation stimulates the secretion of …

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Explaining Mental Health Stigma Through Controllability, Just World Beliefs, And Social Dominance Orientation, Katherine F. Peterson Dec 2017

Explaining Mental Health Stigma Through Controllability, Just World Beliefs, And Social Dominance Orientation, Katherine F. Peterson

Theses and Dissertations

Mental illness carries a pervasive stigma. Research uncovered several theories to explain stigma, including the Attribution Theory, the Biological Model, Belief in a Just World (BJW), and Social Dominance Orientation (SDO). Previous research identified a mediational pathway in which BJW influenced SDO, and where SDO predicted stigmatizing beliefs and intent to discriminate. There is a lack of research examining BJW and SDO from within the framework of mental illness controllability. This study attempted to fill in the gap within stigma literature by examining if perceived mental illness controllability influences the BJW-SDO- Stigma model. Analyses failed to replicate the previously found …

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Finite Element Study On The Influence Of Bone-Implant Interface Condition On Femoral Fracture After Cementless Total Hip Replacement, Caleb Onuh Yenusah Dec 2017

Finite Element Study On The Influence Of Bone-Implant Interface Condition On Femoral Fracture After Cementless Total Hip Replacement, Caleb Onuh Yenusah

Theses and Dissertations

Finite element analysis was performed on an implanted femur, using loads of daily living activities, performed by total hip replacement patients. A probabilistic bone fatigue failure model was utilized to analysis the risk of post-operative femoral fracture in different patient groups, depending on bone fatigue strength for young and elderly patients, and activity levels for normal and active patients. Different bone-implant interface conditions were considered: after surgery, osseointegrated, fibrous tissue covering, and loose. For young patients, the probability of failure is less than 4% for all cases. While in elderly patients, high of 28.2% and 57.9% are reported for normal …

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