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Articles 31 - 44 of 44
Full-Text Articles in Life Sciences
The Reptile Gut Microbiome: Its Role In Host Evolution And Community Assembly, Timothy Colston Colston
The Reptile Gut Microbiome: Its Role In Host Evolution And Community Assembly, Timothy Colston Colston
Electronic Theses and Dissertations
I characterize the endogenous (gut) microbiome of Squamate reptiles, with a particular focus on the suborder Serpentes, and investigate the influence of the microbiome on host evolution and community assembly using samples I collected across three continents in the New and Old World. I developed novel methods for sampling the microbiomes of reptiles and summarized the current literature on non-mammalian gut microbiomes. In addition to establishing a standardized method of collecting and characterizing reptile microbiomes I made novel contributions to the future direction of the burgeoning field of host-associated microbiome research. Through persistent and rigorous fieldwork I amassed the largest …
Food Insecurity And Eating Behaviors Of Collegiate Male Athletes, Kacie Poll
Food Insecurity And Eating Behaviors Of Collegiate Male Athletes, Kacie Poll
Electronic Theses and Dissertations
PURPOSE: To assess the relationship of high school (HS) and collegiate (OM) household food security status (FSS) to current food consumption behaviors in a sample of NCAA Division 1 male, collegiate athletes ≥18 years of age (y). METHODS: A cross-sectional survey of NCAA athletes from a Southeastern Conference (SEC) university was approved by the Institutional Review Board and conducted during August-September, 2016. The questionnaire included the USDA food security survey module and questions related to disordered eating behaviors and food hoarding USDA methods were used to calculate FSS. RESULTS: Participating athletes (n=111) were 19.7±1.4 y and primarily white, football players …
Relationships Between Dietary Habits, Demographics, And Hike Outcome Among 2015 Pacific Crest Trail Backpackers, Lauren Ann Black
Relationships Between Dietary Habits, Demographics, And Hike Outcome Among 2015 Pacific Crest Trail Backpackers, Lauren Ann Black
Electronic Theses and Dissertations
This quantitative research study explores the relationship between dietary patterns, hiker demographics, and total miles hiked during a backpacking trip on the Pacific Crest Trail (PCT). Long hiking distances, low rate of thru-hike completion, consumption of processed and ready to eat foods, weight loss, and large time and monetary strains are comthemes accepted anecdotally by the backpacking population11. However, these themes have yet to be adequately researched and validated for long distance backpackers and PCT backpackers specifically. The online survey gathered data from 151 backpackers who hiked the PCT in 2015. Significant positive correlational relationships were found between the number …
Impact Of Hydration On Collegiate Athletic Performance, Fatigue, And Recovery, Lauren Woodard
Impact Of Hydration On Collegiate Athletic Performance, Fatigue, And Recovery, Lauren Woodard
Electronic Theses and Dissertations
The impact of dehydration on several key physiological functions that are critical for athletic performance is well studied. Hydration monitoring has been known to have significant value on impaired physical functions by maximizing performance during training and competition. Impaired physical functions has been suggested as a limitation on explosive strength, musculoskeletal output, cardiovascular output, and proper technique in contact sports. The purpose of this study was to investigate the relationship between hydration levels and physiological profiles that can be used as a proactive approach in monitoring a collegiate athlete’s athletic performance, fatigue, and recovery status. It was hypothesized that insufficient …
Evidence Of Chemical Camouflage In Pirate Perch (Aphredoderus Sayanus); Avoiding Detection By Colonizing/Ovipositing Prey Through Chemical Crypsis, Tyler Breech
Electronic Theses and Dissertations
No abstract provided.
Evaluation Of Nutrition Education In The Families In Transformation (Fit) Program., Sydney Anne Devers
Evaluation Of Nutrition Education In The Families In Transformation (Fit) Program., Sydney Anne Devers
Electronic Theses and Dissertations
No abstract provided.
Nickel Reduces Calcium Dependent Dimerization In Neural Cadherin, Matthew Paul Dukes
Nickel Reduces Calcium Dependent Dimerization In Neural Cadherin, Matthew Paul Dukes
Electronic Theses and Dissertations
Cadherins are the primary transmembrane component in adherens junctions, structures that link the actin cytoskeleton in adjacent cells within solid tissues including neurological synapses, epithelium and endothelium. Cell-cell adhesion by cadherins requires the binding of calcium ions to specific sites in the extracellular region. Given the complexity of the cell adhesion microenvironment, we are investigating whether other divalent cations might affect calciumdependent dimerization of neural-(N-) cadherin. The first chapter focuses on studies to characterize the impact of binding physiological magnesium (II) or neurotoxic nickel (II) on calcium-dependent N-cadherin function. Physiological levels of magnesium have only a small effect on the …
G-Quadruplexes As Molecular Targets For Transcriptional Control, Rhianna Kyelle Morgan
G-Quadruplexes As Molecular Targets For Transcriptional Control, Rhianna Kyelle Morgan
Electronic Theses and Dissertations
DNA G-quadruplexes (G4s) have gained interest in modern drug discovery efforts. The majority of G4 research, including the mass of this research, heavily focuses on cancer therapeutic development, as G4s are more pronounced in oncogenic promoters compared to the rest of the genome, our efforts extend towards neuroprotection as well. In particular, this work covers G4s in the promoters of MYC, VEGF, kRAS, and Bcl-2. MYC and VEGF harbor the two most well described promoter G4s to date, and their stabilization cultivates transcriptional silencing. Downregulation of MYC reduces cell growth and alters cell energetics; it is promising for a variety …
Spatial Variation Of Bacterial Communities On The Leaves Of A Southern Magnolia Tree, Emily Q. Nguyen
Spatial Variation Of Bacterial Communities On The Leaves Of A Southern Magnolia Tree, Emily Q. Nguyen
Honors Theses
The leaf surface, or phylloplane, is a dynamic environment for its microbial inhabitants, which can be subjected to many environmental factors. Existing phylloplane studies have focused on differences in bacterial community structure between trees of the same species, in different geographical locations, or between trees of different species. Few studies have examined the spatial distribution of bacterial communities on the leaves of a single tree. In this study, leaf samples from different areas of the canopy were obtained from a single Magnolia grandiflora tree. Samples were taken from the high (3.5-4.0 m above the ground), middle (1.5 m), inner middle …
Comparative Effectiveness Of An Exercise And Sedentary Break Intervention On Mood Profile And Dietary Behavior In Young Adults: Pilot Study, Hannah Dau
Honors Theses
Exercise and sedentary behavior are both important subsets of PA (Physical Activity) to study, with emerging research demonstrating that sedentary behavior may predict mental health outcomes independent of PA. Additionally, a correlation has been observed between diet and PA, but few studies on this topic have employed an intervention design. Thus, the purpose of this study was to examine whether changes in PA and sedentary behavior influence mood profile and dietary behavior. The PA intervention consisted of progressively increasing their vigorous-intensity PA (jogging) over a 4-week period among an inactive population. The sedentary group was asked not to exercise, but …
Egg Laying Bird With Male Plumage Demonstrates The Puzzling Nature Of Sexual Differentiation And Selective Mate Preferences In Zebra Finches, John Aaron Howell
Egg Laying Bird With Male Plumage Demonstrates The Puzzling Nature Of Sexual Differentiation And Selective Mate Preferences In Zebra Finches, John Aaron Howell
Honors Theses
Zebra finches (Taeniopygia guttata) are oscine Passerine songbirds that are native to Australia. Zebra finches have sexually dimorphic plumage, song nuclei, and behavior. The role of chromosomes, hormones, and genes on sexual differentiation are not completely understood. A gynandromorph in our aviary had male plumage, a male partner, and produced viable offspring. Mate preference tests revealed lower preference for the gynandromorph and its progeny than controls, suggesting that they had some traits that made them unattractive to other birds. Gynandromorph lineage males had greater same-sex preferences than control males. Chromosomes in birds are different than those in humans. Males are …
Examination Of Electroglottography (Egg) And Surface Electromyography (Semg) As Techniques To Assess Oral Motor Activity During Consumption Of Four Forms Of Chocolate, Taylor Patterson
Honors Theses
The study assessed individual oral motor activity while eating different types of chocolates through the use of electroglottography (EGG) and surface electromyography (sEMG). I hypothesized that chocolate samples with higher milk solids and cocoa composition would be preferred by subjects as assessed by subject evaluation of textural attributes for the four chocolate samples. I predicted that preference will be significantly and positively correlated with oral motor events [e.g. sEMG activity of master and suprahyoid muscles, total number of chewing actions, and time to last swallow (EGG)]. The experiment used a subject group of 40 students enrolled at the University of …
Population Genetics Of The Giant Red Centipede Along The Appalachian Mountains, Kayla Elayne Ladner
Population Genetics Of The Giant Red Centipede Along The Appalachian Mountains, Kayla Elayne Ladner
Honors Theses
This study focused on population genetics of the giant red centipede, Scolopocryptops sexpinousus, in the Southern Appalachian Mountains. Two genetic markers were used—the mitochondrial COI gene, and the nuclear RNA Polymerase II gene. The goal of this study was to determine how many genetically distinct populations of this invertebrate species exist within the study area, and to understand the spatial distribution of genetic diversity within and among populations. I hypothesized several genetically distinct populations of S. sexpinosus would be detected because the complex topographic characteristics and historical climate cycles of the region are thought to limit movement of many forest …
The Prevalence Of Food Insecurity Within The University Of Mississippi Community And Knowledge Of And Opinions About The University Of Mississippi Food Bank, Megan Marie Eubanks
The Prevalence Of Food Insecurity Within The University Of Mississippi Community And Knowledge Of And Opinions About The University Of Mississippi Food Bank, Megan Marie Eubanks
Honors Theses
The purpose of this research was to determine the prevalence of food insecurity within the University of Mississippi community. The project also investigated whether the University of Mississippi (UM) community supports and/ or knows about the UM Food Bank. A survey to determine perceived levels of food insecurity and knowledge of and opinions about the UM Food Bank was dispersed through Qualtrics Survey Software via University email to one-third of the UM faculty, staff, graduate students (including Pharmacy and Law), and undergraduate students. The final survey response count was 356 (response rate: 6.48%). Data collected for questions pertaining to food …