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Articles 1 - 6 of 6
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Characterization Of Metal-Reducing Microorganisms In Walker Lake: A Terminal Saline Desert Lake, Memona Khan
Characterization Of Metal-Reducing Microorganisms In Walker Lake: A Terminal Saline Desert Lake, Memona Khan
Honors College Theses
Metal-reducing microorganisms are increasingly being recognized as an essential component of aquatic microbial ecosystems involved in decomposition of organic matter. Alkaliphilic microbial reduction from alkaline lakes is a little studied field and one particular ecosystem, Walker Lake, presents the opportunity to investigate alkaliphilic metal reducers in their native ecological setting. Walker lake is a terminal, saline, desert lake with pH 9.4, Walker Lake samples of surface and deep sediments and water column samples from 0, 10, 5, 15, 17.5, 19 m depths were cultured by serial dilution in synthetic Walker Lake medium and supplemented separately with Hydrous Ferric Oxide (HFO), …
Physiological And Biochemical Consequences Of Sleep Deprivation, Jade Catherine Boykin
Physiological And Biochemical Consequences Of Sleep Deprivation, Jade Catherine Boykin
Honors College Theses
Sleep is a universal phenomenon in vertebrates and lack of sleep has been linked with various abnormal behaviors (Singh et al 2013). Studies have shown that a strong linkage exists between stress and sleep, or lack thereof. In fact, the Better Sleep Council’s 2009 survey revealed that 65% of Americans lose sleep due to elevated stress (Wells and Vaughn 2012). Continual (chronic) elevated stress levels have been linked with serious negative health effects. By using sleep deprivation studies, on a simpler animal model than humans it is our aim to investigate the consequences of sleep deprivation at the physiological and …
The Effects Of Sodium Lauryl Sulfate On The Abundance Of Producers And Grazers In Aquatic Communities Using Freshwater Microcosms, Stephanie R. Shipley
The Effects Of Sodium Lauryl Sulfate On The Abundance Of Producers And Grazers In Aquatic Communities Using Freshwater Microcosms, Stephanie R. Shipley
Honors College Theses
With increases in environmental awareness, industry has responded with products that reduce negative impacts on aquatic ecosystems. Sodium lauryl sulfate (SLS), a rapidly degrading chemical commonly found in cleaners labeled as ‘environmentally friendly,’ has been shown to have low toxicity in single species toxicity tests. However, that organisms have different sensitivities to SLS suggests a need for measuring effects at the community level. We exposed communities of microalgae (Chlorella sp.) and invertebrate grazers (a benthic snail, Elimia sp. and pelagic microcrustacean Daphnia magna) to 0, 0.5 or 1.5 mgL-1 SLS. Water quality and invertebrate abundance were measured …
Α-Latrotoxin Genes Are Highly Divergent Between Species Of Widow Spiders (Genus Latrodectus), Kacy M. Bennett
Α-Latrotoxin Genes Are Highly Divergent Between Species Of Widow Spiders (Genus Latrodectus), Kacy M. Bennett
Honors College Theses
Widow spiders (genus Latrodectus) possess neurotoxic venom that varies in potency among species. α-latrotoxin is the main protein in widow venom that affects vertebrates, including humans. The European black widow, Latrodectus tredecimguttatus, is currently the only species in this genus where the gene for α-latrotoxin has been characterized. The study presented here characterizes the genetic composition of α-latrotoxin from two additional species, the brown widow (L. geometricus) and the southern black widow (L. mactans). Genetic differences among the three species were quantified for α-latrotoxin. Between species genetic divergence in α-latrotoxin was also compared to …
The Effects Of Gold Nanorods On The Rate Of Apoptosis Of Triple Negative Breast Cancer Cells, Mattie E. Raiford
The Effects Of Gold Nanorods On The Rate Of Apoptosis Of Triple Negative Breast Cancer Cells, Mattie E. Raiford
Honors College Theses
Triple negative breast cancer (TNBC) is a subtype of breast cancer that is most often found in African American females that is characterized by the lack of the progesterone receptor (PR), the estrogen receptor (ER), and the human epithelial growth factor receptor two (HER2).TNBC is a very aggressive form of breast cancer because it does not respond to hormone therapy, due to the lack of the three vital receptors. Since the current treatment is not affective, the project used porphyrin to specifically target cancer in the body because it has an increased affinity for many cancer types. Gold nanorods were …
A Morphological And Genetic Analysis Of Forensically Important Blow Flies, From Georgia: The Genus Lucilia, Katie S. Googe
A Morphological And Genetic Analysis Of Forensically Important Blow Flies, From Georgia: The Genus Lucilia, Katie S. Googe
Honors College Theses
Identification of Blow flies (Diptera: Calliphoridae) to species is important for estimating postmortem intervals, because insect species develop at different rates. Three Blow fly species in Georgia; Lucilia coeruleiviridis, L. cuprina, and L. sericata are similar morphologically, making identification difficult. Furthermore, the status of L. cuprina is in doubt; this species may be a complex of true L. cuprina, and L. cuprina x L. sericata hybrids. The objective of this study was to survey the Georgia Blow fly community and validate the statuses of L. coeruleiviridis, L. cuprina, and L. sericata, through morphological and …