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Articles 1 - 30 of 57
Full-Text Articles in Physical Sciences and Mathematics
Ua1c11/55 Gordon Wilson Photo Collection, Wku Archives
Ua1c11/55 Gordon Wilson Photo Collection, Wku Archives
WKU Archives Collection Inventories
Photographs taken by and of Gordon Wilson.
Poly-3-Hexylthiophene Nanorods As A Donor For Organic Photovoltaics, Dharmesh Patel
Poly-3-Hexylthiophene Nanorods As A Donor For Organic Photovoltaics, Dharmesh Patel
Mahurin Honors College Capstone Experience/Thesis Projects
Poly-3-hexylthiophene functionalized silsesquioxane nanorods (P3HT-NRs) were prepared by direct hydrolysis and condensation of P3HT-silane precursor using the modified Stöber method. The silane precursor was stirred in a mixture of two solvents in the presence of a base under room temperature for three different reaction times. The size, shape, and morphology of these novel nanostructures were visualized using the transmission electron microscope (TEM) and scanning electron microscope (SEM). The composition of the P3HT-NRs was confirmed by FTIR and its silane by proton NMR. Future work will focus on evaluating photovoltaic performance of these nanorods as a donor for organic photovoltaics.
Reaction Rates Of Amino Acids With Derivatives Of The Anticancer Drug Cisplatin, Celia Jess Whelan
Reaction Rates Of Amino Acids With Derivatives Of The Anticancer Drug Cisplatin, Celia Jess Whelan
Mahurin Honors College Capstone Experience/Thesis Projects
We are studying reactions of cisplatin derivatives, which differ in both size and shape, with various amino acids. When reaction with DNA occurs, apoptosis is observed, ideally leading to termination of the cancer. Due to the affinity of cisplatin for sulfur-containing amino acids, reaction with proteins may occur prior to access to the DNA, producing a large array of products, which could potentially be toxic to the human body. Both the size and shape of the platinum complexes often affect the reactions with protein targets more so than with DNA targets. By performing reactions of specific amino acids targets with …
Ogden College Of Science & Engineering Newsletter (Winter 2014), Cheryl Stevens, Dean
Ogden College Of Science & Engineering Newsletter (Winter 2014), Cheryl Stevens, Dean
Ogden College of Science & Engineering Publications
No abstract provided.
The Cadet Training Program Versus The Student Certification Program: A Study Of It- Support Training Programs At Western Kentucky University, Michael Courtney Moore
The Cadet Training Program Versus The Student Certification Program: A Study Of It- Support Training Programs At Western Kentucky University, Michael Courtney Moore
Masters Theses & Specialist Projects
Technology is a critical component of modern-day success. Advancements in technology have improved communication between individuals and companies. Technological advancements have allowed students to earn college degrees online. People who habitually use technology expect a high level of performance and support. As new technologies are implemented, such as complex web services or new operating systems, the dependence for information technology (IT) support grows in demand. Even learning curves can be cumbersome without proper assistance from IT professionals. Companies and institutions must accommodate user needs by implementing fast, efficient, and friendly support. In order to offer optimal customer support, representatives must …
Station Exposure And Resulting Bias In Temperature Observations: A Comparison Of He Kentucky Mesonet And Asos Data, James Kyle Thompson
Station Exposure And Resulting Bias In Temperature Observations: A Comparison Of He Kentucky Mesonet And Asos Data, James Kyle Thompson
Masters Theses & Specialist Projects
Station siting, exposure, instrumentation, and time of observations influence longterm climatic records. This thesis compared and analyzed temperature data from four Kentucky Mesonet stations located in Fayette (LXGN), Franklin (LSML), Clark (WNCH), and Bullitt (CRMT) counties to two nearby Automated Surface Observation Systems (ASOS) stations in Kentucky. The ASOS stations are located at Louisville International Airport (Standiford Field - KSDF) and at Lexington Airport (Blue Grass Field - KLEX). The null hypothesis states that there is no significant difference in temperature measurements between the two types of stations. To quantify the differences in temperature measurements, geoprofiles and the following statistical …
Trophic Dynamic Interactions In A Temperate Karst River, Elizabeth Malloy
Trophic Dynamic Interactions In A Temperate Karst River, Elizabeth Malloy
Masters Theses & Specialist Projects
Surface streams in karst landscapes are often characterized by high nutrient levels due to incomplete filtration through series of innumerable, below-ground conduits. Seasonal growth of the filamentous alga, Cladophora, is typically associated with nutrient-rich waters. This research compared macroinvertebrate food web structure between riverine reaches with contrasting underlying karst topography, nutrient levels, and Cladophora cover during summer 2012 and autumn 2013. Recent work in these reaches found a high correlation between Cladophora cover and nutrient content, particularly nitrate. Four questions were addressed during this study: 1. Do longitudinal trends in algal and consumer δ13C values relate to decreased DIC availability …
Exercise Science, Currey Mccullough
Exercise Science, Currey Mccullough
Undergraduate Research Award
No abstract provided.
Public School Science Education And Geographically-Specific Environmental Sustainability Issues: Implications For Social Work Education, Amanda Gallion
Public School Science Education And Geographically-Specific Environmental Sustainability Issues: Implications For Social Work Education, Amanda Gallion
Mahurin Honors College Capstone Experience/Thesis Projects
The focus of this project was to examine the educational practices of Kentucky-based public school teachers (grades 4th-8th) related to their efforts to incorporate sustainability into the science classroom and specifically related to the teachers’ focus or lack of focus on karst landscape. The major themes that were analyzed were how educators include this content into their classroom material and how this impacts their students in the area of environmental sustainability. The themes analyzed were: environmental sustainability as a lifestyle choice; education about environmental sustainability, the nexus of family, school, and community; the importance of geographical context in regards to …
Beyond Sustainability: A New Conceptual Model, Molly Kerby, Gayle Mallinger
Beyond Sustainability: A New Conceptual Model, Molly Kerby, Gayle Mallinger
Faculty Publications
Over the last few decades, the notion of sustainability has become an interdisciplinary buzz word. Sustainability has been an integrative concept that includes three constructs or pillars: a) social; b) economic; and c) ecological. Until recently, theoretical approaches based on the three pillars approach have operated in silos rather than exploring the interconnectedness of the constructs. Few models have moved beyond the idea that logical relations exist among the constructs (social, economic, and ecological) to consider factors external to communities, nor have they examined the internal socio-economic factors that influence positive outcomes. While this conceptualization has raised awareness about the …
Mcdaniel, Paul William, 1916-2004 (Mss 515), Manuscripts & Folklife Archives
Mcdaniel, Paul William, 1916-2004 (Mss 515), Manuscripts & Folklife Archives
MSS Finding Aids
Finding aid only for Manuscripts Collection 515. Writings and awards of Paul William McDaniel, nuclear physicist and graduate of Western Kentucky University. Includes typescripts of lectures delivered at Queensland University, a journal he kept while serving in World War II, and a copy of his Arthur F. Fleming Award. Also includes many letters of congratulations to him and a copy of the Atomic Energy Act of 1946.
Ogden College Of Science & Engineering Newsletter (Fall 2014), Cheryl Stevens, Dean
Ogden College Of Science & Engineering Newsletter (Fall 2014), Cheryl Stevens, Dean
Ogden College of Science & Engineering Publications
No abstract provided.
Geogram 2014, David J. Keeling Editor, Wku Department Of Geography And Geology
Geogram 2014, David J. Keeling Editor, Wku Department Of Geography And Geology
Earth, Environmental, and Atmospheric Sciences Publications
No abstract provided.
Advances Of Scientific Research On Technology Enhanced Learning In Social Networks And Mobile Contexts: Towards High Effective Educational Platforms For Next Generation Education, Leyla Zhuhadar, Miltiadis Lytras, Jacky Xi Zhang, Eugenius Kurilovas
Advances Of Scientific Research On Technology Enhanced Learning In Social Networks And Mobile Contexts: Towards High Effective Educational Platforms For Next Generation Education, Leyla Zhuhadar, Miltiadis Lytras, Jacky Xi Zhang, Eugenius Kurilovas
Information Systems Faculty Publications
This editorial presents the latest advances of scientific Research on Technology enhanced learning in social networks and mobile contexts. It summarizes the key finding and promotes three main pillars for future scientific contribution to the domain namely: Enabling Technologies, Educational Strategies, and Next Generation Social Networks for Educational Purposes. It can serve as a position document for scientific debate fostering international collaboration and empirical research in the various aspects of the well-defined agenda. It can also serve as a reference edition for researchers interested in the adoption of Social Networks, in the Education Sector.
Photos That Changed The World: Ted Talk Annotated Resource List, Chris Riehl
Photos That Changed The World: Ted Talk Annotated Resource List, Chris Riehl
Undergraduate Research Award
No abstract provided.
A Coupled Pde Model For The Morphological Instability Of A Multi-Component Thin Film During Surface Electromigration, Mahdi Bandegi
A Coupled Pde Model For The Morphological Instability Of A Multi-Component Thin Film During Surface Electromigration, Mahdi Bandegi
Masters Theses & Specialist Projects
In this thesis a model involving two coupled nonlinear PDEs is developed to study instability of a two-component metal film due to horizontal electric field and in a high-temperature environment similar to operational conditions of integrated circuits. The proposed model assumes the anisotropies of the diffusional mobilities for two atomic species, and negligible stresses in the film. The purpose of the modeling is to describe and understand the time-evolution of the shape of the film surface. Toward this end, the linear stability analysis (LSA) of the initially planar film surface with respect to small shape perturbations is performed. Such characteristics …
Antimicrobial Nanoparticles: A Green And Novel Approach For Enhancing Bactericidal Efficacy Of Commercial Antibiotics, Monic Shah
Masters Theses & Specialist Projects
On the verge of entering the post-antibiotic era, numerous efforts are in place to regain the waning charm of antibiotics which are proving ineffective against most “Superbugs”. Engineered nanomaterials, especially gold nanoparticles (GNPs) capped with antibacterial agents, are proving to be an effective and novel strategy against multidrug resistant (MDR) bacteria. In this study, we report a one-step synthesis of antibioticcapped GNPs (25 ± 5 nm) utilizing the combined reducing and capping ability of a cephalosporin antibiotic, ceftazidime. No signs of aggregation or leaching of ceftazidime from GNP surface was observed upon its storage. Antibacterial testing showed dosedependent broad spectrum …
Carbon Cycling Dynamics Inferred From Carbon Isotope Sourcing In A Mid-Latitude Karst-Influenced River, Kegan N. Mcclanahan
Carbon Cycling Dynamics Inferred From Carbon Isotope Sourcing In A Mid-Latitude Karst-Influenced River, Kegan N. Mcclanahan
Masters Theses & Specialist Projects
As ever-increasing levels of carbon dioxide alter the chemistry of the Earth’s atmosphere, understanding the global carbon cycle becomes increasingly important. A particularly important component is the riverine carbon cycle, as rivers are the primary conduits for dissolved inorganic carbon from terrestrial watersheds to ocean basins. Stable carbon isotopes (13C/12C) were collected weekly and input into the mixing model IsoSource to delineate seasonal carbon sourcing along two nested basins in the upper Green River System, Kentucky. In the more siliciclastic upstream catchment, dissolved inorganic carbon (DIC) was primarily derived from soil respiration (34%). Groundwater dissolving carbonate bedrock and carbonate dissolution/precipitation …
Selective Oxidations By Iron(Iii) Porphyrins And Iron(Iii) Corroles, Aaron Dalnamath Carver
Selective Oxidations By Iron(Iii) Porphyrins And Iron(Iii) Corroles, Aaron Dalnamath Carver
Masters Theses & Specialist Projects
The selective oxidation of organic compounds represents a leading technology for chemical industries. They are used in chemical synthesis in the pharmaceutical and petrochemicals industries, and possible the decontamination of harmful substances. However, oxidations reaction are among the most challenging processes to control. Many stoichiometric oxidants with heavy metals are expensive, or toxic maybe both, and therefore unfeasible to be utilized. The ideal processes for catalytic oxidation would use molecular oxygen or hydrogen peroxide as the primary oxygen source, with transition metal catalysts to mimic the predominant oxidation catalysts in Nature, the cytochrome P450 enzymes. This study focuses on the …
Evaluating The Effectiveness Of Regulatory Stormwater Monitoring Protocols On Groundwater Quality In Urbanized Karst Regions, Daniel C. Nedvidek
Evaluating The Effectiveness Of Regulatory Stormwater Monitoring Protocols On Groundwater Quality In Urbanized Karst Regions, Daniel C. Nedvidek
Masters Theses & Specialist Projects
Non-point pollution from stormwater runoff is one of the greatest threats to water quality in the United States today, particularly in urban karst settings. In these settings, the use of karst features and injection wells for stormwater management results in virtually untreated water being directed into the karst aquifer. Currently, no policies exist specifically to provide water quality protections to karst environments. This study utilized a combination of karst stormwater quality data, along with survey data collected from MS4 Phase II communities, and an analysis of current federal, local, and state water quality regulations, to assess the need for karst-specific …
Green Synthesis And Evaluation Of Catalytic Activity Of Sugar Capped Gold Nanoparticles, Yogesh A. Kherde
Green Synthesis And Evaluation Of Catalytic Activity Of Sugar Capped Gold Nanoparticles, Yogesh A. Kherde
Masters Theses & Specialist Projects
Owing to the importance of gold nanoparticles in catalysis, designing of them has become a major focus of the researchers. Most of the current methods available for the synthesis of gold nanoaprticles (GNPs) suffer from the challenges of polydispersity, stability and use of toxic and harmful chemicals. To overcome these limitations of conventional methods, in our present study, we made an attempt to design a method for the green synthesis of monodispersed and stable gold nanoparticles by sugars which act as reducing and stabilizing agent. Characterization of synthesized nanoparticles was done by using various analytical techniques such as transmission electron …
Mechanochemistry: Pyrene Derivatives In The Detection Of Select Metals, Hillary Asberry
Mechanochemistry: Pyrene Derivatives In The Detection Of Select Metals, Hillary Asberry
Mahurin Honors College Capstone Experience/Thesis Projects
Metals are found naturally in the environment and expelled through industrial waste. When absorbed through the skin, inhaled, or ingested, many metals have been proven to cause numerous health problems. Mechanochemistry using a mortar and pestle grinding shows promise in capture and detection of toxic metals. This method allows for an on-site, cost effective, simple, solvent free, and environmentally friendly metal coordination. Pyrene derivatives with diethylenetriamine and bis(3-aminopropyl)amine linkers have shown to be successful fluorescent receptors serving as a Lewis bases in the reactions. After coordination, color changes are observed in visible light and UV light. Metal salts that exhibit …
Mercury Bioaccumulation In Bat Populations In Mammoth Cave National Park: Modern, Historical, And Ancient Samples, Stephanie Hagan
Mercury Bioaccumulation In Bat Populations In Mammoth Cave National Park: Modern, Historical, And Ancient Samples, Stephanie Hagan
Mahurin Honors College Capstone Experience/Thesis Projects
The first human to enter Mammoth Cave passed under its arch about 4,000 years ago, but bats have been calling it home long before humans discovered it. Due to environmental exposure of mercury, these bats potentially show substantial mercury bioaccumulation. Bats now come into contact with mercury through atmospheric deposition from industrial sources. It is expected that the modern bats residing in Mammoth Cave should have measurable levels of mercury in their system which has been determined by guano analysis. Over fifty current samples of bat guano have been analyzed and exhibit mercury levels at the part per billion level. …
Herbal And Holistic Medicine In Latin America, William H. Lyle
Herbal And Holistic Medicine In Latin America, William H. Lyle
Mahurin Honors College Capstone Experience/Thesis Projects
A variety of herbal and holistic remedies were used in pre-Columbian cultures, especially in Aztec and Incan cultures. Many different herbs were used to provide medical attention to patients directly, while other herbs were used to supplement shaman[1] medicine, which was particularly common in Inca culture. While there is little scientific basis for shamanism, as a viable healing option in modern culture, most herbal remedies had active chemical ingredients that could be or are used today to treat similar symptoms, and, in some cases, are being applied in different scenarios as well. The methods of usage, active chemicals, and …
Laser Intensity And Ionic Strength Dependence Of The Aqueous Nitrate And Carbonate Ion Raman Spectra, Samuel White
Laser Intensity And Ionic Strength Dependence Of The Aqueous Nitrate And Carbonate Ion Raman Spectra, Samuel White
Mahurin Honors College Capstone Experience/Thesis Projects
The geometry (and hence vibrational modes) of aqueous nitrate ion, NO3-, is known to depend on the solution composition—concentration, counter ions, etc. If a definite relationship between the vibrational spectrum and ionic strength of the solution could be established, it could be a useful monitor of solution composition over time. This would be valuable in studying the reaction rates and mechanisms of reactions involving nitrate in an aqueous environment, such as its photolysis in snow. Previous work in our lab observed a split peak at the symmetric-stretch mode of nitrate, though this mode does not usually show …
Analysis Of No And Noy In The Low Atmosphere At Mammoth Cave National Park, Jessica Hall
Analysis Of No And Noy In The Low Atmosphere At Mammoth Cave National Park, Jessica Hall
Mahurin Honors College Capstone Experience/Thesis Projects
Nitric oxide (NO) and reactive oxides of nitrogen (NOy) are pollutants produced by automobiles and formed naturally from nitrate ions (NO3-). We are interested in the natural processes and anthroprogenic sources of NO and NOy. To better understand NO and NOy trends in the atmosphere, data from Mammoth Cave National Park (MCNP) was analyzed. The rural location of MCNP leads to the hypothesis that the natural sources of NO to be studied without anthropogenic sources significantly contributing to the overall levels. NO is correlated with factors such as solar radiance and precipitation. …
The Analysis Of Experimental Error In Parity Violation Experiments With Polarized Neutrons, Jonathan Serpico
The Analysis Of Experimental Error In Parity Violation Experiments With Polarized Neutrons, Jonathan Serpico
Mahurin Honors College Capstone Experience/Thesis Projects
Measurements of parity symmetry violation in nuclear reactions with polarized neutrons can provide valuable information on hadronic weak interaction. We have conducted an analysis of experimental error in the measurement of the parity violating eect in the n3He experiment. several experimental parameters have been optimized to minimize statistical error using numerical simulations. An analysis of systematic error due to diferential cross-section dependence on energy as well as on false parity conserving asymmetries was also conducted. Our results suggest that the proposed parameters of the experiment will suficiently suppress all sources of error under consideration. Furthermore, these approaches may be effectively …
Ogden College Of Science & Engineering Newsletter (Summer 2014), Cheryl Stevens, Dean
Ogden College Of Science & Engineering Newsletter (Summer 2014), Cheryl Stevens, Dean
Ogden College of Science & Engineering Publications
No abstract provided.
Laboratory Scale Study Of Calcium Sulfate Hydration Forms, Sandeep Kumar Kuthadi
Laboratory Scale Study Of Calcium Sulfate Hydration Forms, Sandeep Kumar Kuthadi
Masters Theses & Specialist Projects
This research is part of an ongoing project to create gypsum wallboards with enhanced fire resistance. The main goal of this research is to better understand the dehydration properties of calcium sulfate dihydrate, and the hydration of calcium sulfate hemihydrate as well as anhydrous calcium sulfate. The lab-scale kinetics of these processes were studied using thermogravimetric analysis and sorption analysis. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the products from different processes. In addition to the instrumental studies, small batches were handled in ovens and liquid slurries to better mimic the real world processing of …
Comparative Studies On Standard And Fire-Rated Gypsum Wallboards., Harika Javangula
Comparative Studies On Standard And Fire-Rated Gypsum Wallboards., Harika Javangula
Masters Theses & Specialist Projects
The long term goal of this research is to improve the fire resistance of gypsum wallboard (GWB). Gypsum wallboard consists mainly of gypsum, i.e. calcium sulfate dihydrate, CaSO4•2H2O. In buildings, the chemical, mechanical and thermal properties of gypsum wallboard play an important role in delaying the spread of fire. To build a fire resistant GWB, it is very important to study the thermal, mechanical, physical and chemical properties of regular GWB and various types of fire-resistant wallboards available commercially in the market. Various fire-resistant GWBs have been compared and contrasted with reference to a standard wallboard …