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Articles 1 - 8 of 8
Full-Text Articles in Life Sciences
Demography And Disease Of The Rare Shrub Buckleya Distichophylla (Santalaceae) In Northeastern Tennessee, William Seth Ratliff
Demography And Disease Of The Rare Shrub Buckleya Distichophylla (Santalaceae) In Northeastern Tennessee, William Seth Ratliff
Undergraduate Honors Theses
Piratebush (Buckleya distichophylla (Nutt.) Torr.) is a rare, hemiparasitic shrub with the only extant populations in western North Carolina, northeastern Tennessee, and southwestern Virginia. The preferred natural hosts of piratebush, Carolina and eastern hemlocks, have seen sharp declines over the last decade due to the invasive hemlock woolly adelgid. Virginia pine, another important host of piratebush, is also susceptible to disease, specifically Cronartium appalachianum, a rust fungus for which piratebush is the secondary host. This study described and analyzed current demographic parameters of three Tennessee piratebush populations. Additionally, spatial patterns of disease and demographic characters were analyzed. These …
Executive Function Predictors Of Children's Talk, Jacqlyne D. Weber
Executive Function Predictors Of Children's Talk, Jacqlyne D. Weber
Undergraduate Honors Theses
Relatively few studies have investigated the relationship between executive functioning (EF) and language development, and even fewer have researched hot and cool EF as a predictor language development. This study is an investigation into the relationship between EF and language development in preschool aged children. More specifically, the ability for hot or cool EF to predict language, this will be the focus of the study. It was found that hot EF was a better predictor of language development in preschool aged children.
Identification Of Transcription Factors Gzf3, Rfx1, Orf19.3928 As Being Implicated In Candida-Bacterial Interactions., Joni Watson
Identification Of Transcription Factors Gzf3, Rfx1, Orf19.3928 As Being Implicated In Candida-Bacterial Interactions., Joni Watson
Undergraduate Honors Theses
Candida albicans is an opportunistic pathogen that is present in the normal flora in a majority of individuals. One key factor in C. albicans virulence is the ability to change its morphology from yeast to an elongated or hyphal form. The regulation of this morphogenesis relies in part upon quorum sensing (QS) molecules. C. albicans often exists as part of a mixed culture alongside other microbes and is influenced by their presence as well as the presence of QS molecules that they produce. In this study, a library of diploid homozygous transcriptional regulator knockout (TRKO) mutants were screened to identify …
Establishing The Dance Floor: Frame Manipulation Experiments, Peter D. Suich
Establishing The Dance Floor: Frame Manipulation Experiments, Peter D. Suich
Undergraduate Honors Theses
Past studies of honey bee populations, in both natural and laboratory settings have allowed researchers to elucidate the dance language of honey bees within the hive. While the intent and meaning of the waggle dance is thoroughly understood, the area within the hive on which the bees dance is poorly understood. Several factors that may contribute to waggle dancing were studied: substrate, scent and hive entrance proximity. Two separate honey bee colonies were placed in three-frame observation hives. After establishing the dance floor, new experimental conditions were introduced by changing the position of the frames and watching for three days …
Inverse Changes In Ghrelin And A2a Receptor Gene Expression Levels In The Hippocampus Of Heart Failure Canines Following Spinal Cord Stimulation, Benjamin E. Jewett
Inverse Changes In Ghrelin And A2a Receptor Gene Expression Levels In The Hippocampus Of Heart Failure Canines Following Spinal Cord Stimulation, Benjamin E. Jewett
Undergraduate Honors Theses
Myocardial infarction (MI), often referred to as a heart attack, is a serious health issue in the United States. There is a well-documented link between MI and major depressive disorder (MDD), with a high incidence of MDD occurring after an MI. Overlapping pathologies have been observed within the hippocampus of the brain in animal models of MI and depression. These observations suggest that pathobiological cross-talk between the heart and brain could have a role in the etiology of MDD that occurs after an MI. Spinal cord stimulation (SCS) has previously been shown to have both cardioprotective and neuroprotective effects post-MI, …
Characterization Of A Sample Population Of Dental Hygiene Patients With And Without Periodontal Disease As Determined Through Fatty Acid And Fruit And Vegetable Intake, Caitlin R. Jackson
Characterization Of A Sample Population Of Dental Hygiene Patients With And Without Periodontal Disease As Determined Through Fatty Acid And Fruit And Vegetable Intake, Caitlin R. Jackson
Undergraduate Honors Theses
This study was designed to compare the fatty acid and fruit and vegetable intake of people with and without periodontal disease. Periodontal disease affects approximately 15 percent of the developed world population. Participants filled out a food frequency questionnaire (FFQ) for both fruit and vegetable and fat intake. A sample of whole blood (EDTA) was collected to determine the fatty acid profile of participants’ red blood cell (RBC) membrane. This analytical procedure determines the average fatty acid intake of the participant over the previous 90 to 120 days. Participants were classified as case (n=10, patients diagnosed with periodontal disease) or …
Venom Peptide Induced Inhibition Of Escherichia Coli Atp Synthase, Sofiya Azim
Venom Peptide Induced Inhibition Of Escherichia Coli Atp Synthase, Sofiya Azim
Undergraduate Honors Theses
ATP is the main cellular energy generated by the enzyme ATP synthase in almost all organisms from bacteria to vertebrates. While malfunction of the ATP synthase complex is responsible for several disease conditions, the enzyme itself can be used as a potent molecular drug target to combat many diseases including microbial infections, cancer, tuberculosis, and obesity. Recent widespread escalation of antibiotic resistant microbes in general and E. coli in particular demands novel alternative approaches to combat microbial infections. Inhibition of ATP synthase by inhibitors such as peptides is known to deprive microbes of required energy, resulting in microbial cell death. …
Influence Of The Anti-Hiv Drug Elvitegravir On Chlamydial Development And The Characterization Of Chlamydial Polymorphic Membrane Protein Expression In Herpes Simplex Virus (Hsv)/C. Trachomatis Co-Infected Cells, Hena Yakoob
Undergraduate Honors Theses
Chlamydia trachomatis is the most common bacterial agent of sexually transmitted infections worldwide and a common co-infection in AIDS patients. Chlamydial genital tract infections are often asymptomatic; therefore many infections go untreated and result in complications like chronic inflammation, ectopic pregnancy, and pelvic inflammatory disease. Chlamydia share a unique developmental cycle and under stress, can enter a state known as persistence, in which the bacteria are noninfectious but still viable. Removal of the stressor allows the chlamydiae to re-enter and complete the developmental cycle. Exposure to low-dose quinolones can cause the chlamydiae to enter persistence and halt the developmental cycle. …