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Physical Sciences and Mathematics Commons™
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Articles 1 - 21 of 21
Full-Text Articles in Physical Sciences and Mathematics
Effects Of A Spatially And Temporally Predictable Chlorophyll Maximum On Bottlenose Dolphin Distribution In A South Carolina Estuary, Steven W. Thornton
Effects Of A Spatially And Temporally Predictable Chlorophyll Maximum On Bottlenose Dolphin Distribution In A South Carolina Estuary, Steven W. Thornton
Honors Theses
Numerous studies have focused on the complex relationship between phytoplankton and zooplankton in estuarine environments, but few have scrutinized the effects of this connection on organisms in higher trophic levels. This study examined chlorophyll a concentrations and zooplankton densities in North Inlet, South Carolina, a site where a stable chlorophyll a maximum has been documented to exist at low tide, to determine if they influenced the distribution of resident bottlenose dolphins (Tursiops truncatus). We hypothesized that patterns of estuarine circulation in the salt marsh serve to concentrate phytoplankton and zooplankton predictably in time and space, and that these patterns influence …
The Effect Of A Phytoplankton Maximum On The Trophic Food Chain Of The Bottlenose Dolphin (Tursiops Truncatus) In North Inlet, South Carolina., Lindsay Michael Stang
The Effect Of A Phytoplankton Maximum On The Trophic Food Chain Of The Bottlenose Dolphin (Tursiops Truncatus) In North Inlet, South Carolina., Lindsay Michael Stang
Honors Theses
Jones Creek, part of North Inlet-Winyah Bay, South Carolina, is known to have a chlorophyll a maximum that exists during low tide. The goal of this study was to determine if an increase in phytoplankton, demonstrated by chlorophyll a levels, would lead to an increase in zooplankton, fish, and bottlenose dolphins in the area. Sampling for chlorophyll a concentrations, zooplankton and dolphin densities occurred in fall of 2008. Based on the samples obtained, as chlorophyll a concentrations increased at low tide, zooplankton densities decreased. Dolphin density plots showed an increased density in Jones Creek during low tide for spring, summer, …
Eastern Mediterranean Pore Waters: Clues Into The Geochemical Pathways From Evaporated Seawater To Basinal Brines, Jessica A. Mumphrey
Eastern Mediterranean Pore Waters: Clues Into The Geochemical Pathways From Evaporated Seawater To Basinal Brines, Jessica A. Mumphrey
Honors Theses
No abstract provided.
Petarxiv: An Archive For Scientific Simulations In Petashare, Tyler Barker
Petarxiv: An Archive For Scientific Simulations In Petashare, Tyler Barker
Honors Theses
No abstract provided.
Mechanical Optimization Of Vertical Axis Wind Turbine Blades, Alexander Laurence Combe
Mechanical Optimization Of Vertical Axis Wind Turbine Blades, Alexander Laurence Combe
Honors Theses
No abstract provided.
Breaking The Spell: Developing A New Generation Of Porphyrins For Treating Cerebral Tumors, Ryan Harrison Gray
Breaking The Spell: Developing A New Generation Of Porphyrins For Treating Cerebral Tumors, Ryan Harrison Gray
Honors Theses
No abstract provided.
Co-Evolution Of Super Massive Black Holes And Their Surrounding Galactic Bulges, Joseph Chatelain
Co-Evolution Of Super Massive Black Holes And Their Surrounding Galactic Bulges, Joseph Chatelain
Honors Theses
No abstract provided.
Making An Xbox360 Video Game, Daniel Frandsen
Making An Xbox360 Video Game, Daniel Frandsen
Honors Theses
In the area of computer science, game design pushes the limits on what is possible in real time graphics. The game must process the entire scene up to sixty times a second, so code techniques that normally work must be adapted to be as efficient as possible. Some challenges cannot be overcome by traditional methods and must be adapted to work in a high-demand environment. In addition to these obstacles, students have limited opportunities to develop games for console platforms due to the cost required for development kits. This paper will explore the process behind developing a game for the …
Optical Properties Of Multilayer-Polyelectrolyte Films With Incorporated Gold Nanomaterials (Solid Nanoparticles And Hollow Nanoshells), Robert Watson Day
Optical Properties Of Multilayer-Polyelectrolyte Films With Incorporated Gold Nanomaterials (Solid Nanoparticles And Hollow Nanoshells), Robert Watson Day
Honors Theses
The growth of various multilayer‐polymer multilayer‐nanoparticle films was successfully achieved. Multilayer‐polymer multilayer‐nanoparticle films with 1, 3, and 5 polymer layers between nanoparticle layers exhibit significantly different optical properties due to the differences in magnitude of particle plasmon coupling. These film systems were also successfully extended to hollow gold nanoshells, which have significantly enhanced optical properties in comparison to solid gold nanoparticles of similar sizes. A proposal for utilizing this increased sensitivity of the gold nanoshells to explore the ‘microenvironments’ for optimizing potential sensing applications is also presented.
The Storm 2.0 Project Next Generation Hurricane Data Collection, Santhana Krishnan Balaji
The Storm 2.0 Project Next Generation Hurricane Data Collection, Santhana Krishnan Balaji
Honors Theses
No abstract provided.
Learning The Lay Of Their Land: Data Recording By Maine Land Trusts, Patrick John Roche
Learning The Lay Of Their Land: Data Recording By Maine Land Trusts, Patrick John Roche
Honors Theses
Land trusts have led the recent, rapid expansion in private land conservation in the US. As they have grown, many questions have emerged as to the value of their conservation efforts, especially in the long-term. To address this data gap, studies have evaluated easement restrictions and the characteristics of land trust protected property. I take a novel approach by investigating the data that land trusts record about their protected properties and its impact on their capacity to protect conservation values. I surveyed 55 land trusts operating in Maine about data they record in baseline documentation reports. A majority (82%) had …
The Effects Of Exogenous Insulin And Exercise On Glucose And Lactate Metabolism In The Brown Anole, Anolis Sagrei, Kristen Marie Hitchcox
The Effects Of Exogenous Insulin And Exercise On Glucose And Lactate Metabolism In The Brown Anole, Anolis Sagrei, Kristen Marie Hitchcox
Honors Theses
Blood glucose homeostasis is tightly regulated in mammals. Insulin and exercise both stimulate glucose uptake into muscle cells via the GLUT4 transporter protein by independent pathways. Insulin triggers a tyrosine kinase pathway, but the mechanism stimulated by exercise is unknown. Discovering the mechanism may provide new therapeutic techniques for people with diabetes mellitus. While mammals have been studied extensively, research on a different model may elucidate aspects of this lesser known pathway. Reptiles rapidly deplete glycogen stores during bursts of activity and produce lactate as a byproduct of anaerobic metabolism. Lactate undergoes gluconeogenesis within muscle tissue, rather than liver tissue, …
Mechanisms Of Cytotoxicity Of Diepoxybutane, Epichlorohydrin And 1-(Chloroethenyl)Oxirane, Rebecca D. Kamins
Mechanisms Of Cytotoxicity Of Diepoxybutane, Epichlorohydrin And 1-(Chloroethenyl)Oxirane, Rebecca D. Kamins
Honors Theses
Diepoxybutane (DEB), epichlorohydrin (ECH), and 1-(chloroethenyl)oxirane (COX) are small molecules that can form DNA interstrand cross-links. All three of these compounds are, or are metabolites of, industrial chemicals linked to cancer. Additionally, DEB is a metabolite of treosulfan, an anti-cancer drug. We are trying to determine why some of these compounds cause cancer and some can also cure cancer. To do so, we are attempting to link cytotoxicity, cross-linking efficiency, and apoptotic potential of the three compounds to see if any correlations exist. The purpose of this project was to quantify apoptotic potential of DEB, ECH and COX. This was …
The Two-Sum Of Ribbon Graphs And The Bolloba ́S-Riordan-Tutte Polynomial, Brittan Farmer
The Two-Sum Of Ribbon Graphs And The Bolloba ́S-Riordan-Tutte Polynomial, Brittan Farmer
Honors Theses
No abstract provided.
Molecular Modeling Of Para-Benzyne And A Series Of Push-Pull [14]-Pyridoannulenes, Evan B. Wang
Molecular Modeling Of Para-Benzyne And A Series Of Push-Pull [14]-Pyridoannulenes, Evan B. Wang
Honors Theses
Molecular modeling is vital for gaining insight into experimental results and discovering molecular properties not yet characterized by experiment. Depending on the type of molecule under investigation, certain methods will yield more accurate and revealing answers. In the first project, a state-averaged, multireference complete active space (CAS) approach was used for the determination of the vertical excitation energies of valence and Rydberg states of para-benzyne. Orbitals were generated with a 10- and 32-state averaged multiconfigurational self consistent field (MCSCF) approach. Electron correlation was included using multireference configuration interaction with singles and doubles (MR-CISD), including Pople correction for size extensivity (MR-CISD+Q), …
Polyelectrolyte-Linked, Multi-Layer Film Assemblies Of Aqueous Nanoparticles And Nanoshells, Anne Galyean
Polyelectrolyte-Linked, Multi-Layer Film Assemblies Of Aqueous Nanoparticles And Nanoshells, Anne Galyean
Honors Theses
Multi-layer films of nanoparticles and nanoshells featuring various polymeric linkage molecules have been assembled and their optical properties characterized. The growth dynamics, including molecular weight effects, and stability of the various nanoparticle film constructions, using both single polymer as well as combinations of alternating charge polyelectrolytes as linking mechanisms, are presented. The polymeric linkers studied include poly-L-lysine, poly-L-arginine, poly(allylamine hydrochloride), and polyamidoamine dendrimers. Significantly air stable films were achieved with the use of multi-layered polymeric bridges between the nanoparticles and nanoshells. Optical sensitivity normally observed with these nanomaterials in solution was observed for their corresponding film geometries, with the nanoshell …
Tokai To Kamioka: A 2nd Generation Long Baseline Neutrino Experiment, Jessica Danielle Brinson
Tokai To Kamioka: A 2nd Generation Long Baseline Neutrino Experiment, Jessica Danielle Brinson
Honors Theses
No abstract provided.
Diagnostics For Ultracold Plasma Experiments, Lauren Rand
Diagnostics For Ultracold Plasma Experiments, Lauren Rand
Honors Theses
The goal of this experiment was to observe the effects of variations of experimental conditions on the ultracold plasma that formed as a result. The wavelength and power of the ionizing laser were varied to change the electron temperature and plasma density. The delay between the ionizing laser and the field ionization pulse was changed as well. In each case, plasma evolution and the resulting distribution of Rydberg states were observed. It was found that both electron temperature and plasma density directly affected the plasma lifetimes. However, neither electron temperature nor plasma density nor delay length had an effect on …
Factors Influencing Conservation Success Or Failure In Tiger Range States, Megan C. Saunders
Factors Influencing Conservation Success Or Failure In Tiger Range States, Megan C. Saunders
Honors Theses
Tigers are currently found in 13 countries. Three of eight recognized subspecies are extinct and the other subspecies are considered endangered throughout their range. Major threats to tigers include habitat and prey loss and poaching. Most studies of tiger decline, to date, have explored direct threats. This study uses a range-wide approach to explore possible underlying drivers of tiger decline. I used recent tiger population estimates and identified 6 biological measures and 27 socioeconomic measures to ask why some countries are more successful in conserving tigers than others. Data were analyzed using correlation and regression analyses in SPSS. Higher rates …
Changes In Apoptotic Gene Expression Induced By Dna Cross-Linkers, Jordanne B. Dunn
Changes In Apoptotic Gene Expression Induced By Dna Cross-Linkers, Jordanne B. Dunn
Honors Theses
The Millard Research Laboratory is interested in the cytotoxic mechanisms of the bifunctional alkylators diepoxybutane (DEB), epichlorohydrin (ECH), and (1-chloroethenyl) oxirane (COX). Studies performed in the laboratory examine the dual nature of these DNA cross-linking compounds that can act as carcinogens or anti-cancer agents. The mechanisms through which these compounds induce cell death are explored in this study. Cells either undergo cell death due to necrosis or apoptosis. HL-60 cells were treated with varying concentrations of DEB, ECH, or COX. A caspase 3/7 assay was used to test for induction of apoptosis in the treated cells at varying incubation times. …
Upgrade Of A Raman Spectrometer With Modern Computer Control And Data Acquisition For Studies Of Hydrogen Bonding In Pyrimidine, Austin Howard
Upgrade Of A Raman Spectrometer With Modern Computer Control And Data Acquisition For Studies Of Hydrogen Bonding In Pyrimidine, Austin Howard
Honors Theses
The restoration of a Cold War era high resolution Raman spectrometer to working order as well as its control and data acquisition upgrade using a Labview program authored for this purpose are discussed. The restored Raman spectrometer was used in an investigation of intermolecular interactions involving pyrimidine. Following in this manuscript are three chapters. The first chapter is a brief description of the history and theory of Raman spectroscopy as well as some details of the instrumentation used in Raman spectroscopy. The second chapter contains technical details of the restoration and upgrade of the high resolution Raman spectrometer. The third …