Recursos de colección

The KnowledgeBank at OSU (82.538 recursos)

Knowledge Bank contains collections of presentations, publications and reports related to Ohio State University.

Senior Theses

Mostrando recursos 1 - 20 de 919

  1. Measurement of Anthropogenic Gadolinium in the Scioto and Olentangy River System Using Inductively Coupled Plasma Mass Spectrometry (ICP-MS)

    Cole, Bradley
    Gadolinium, a rare earth element (REE), is used throughout modern medical facilities as a paramagnetic component for Magnetic Resonance Imaging (MRI) contrast agents. Eventually after use, contrast agents travel through hospital or city wastewater treatment facilities and end up as waste in the City of Columbus's Scioto and Olentangy River systems. Our study, using inductively coupled plasma mass spectrometry, measured the dissolved rare earth element chemistry upstream, within the City of Columbus, and downstream of the City of Columbus's wastewater treatment facilities to detect any possible amounts of anthropogenic gadolinium throughout these waterways. Following the detection of any anthropogenic gadolinium,...

  2. Modeling Pressure–Temperature Conditions of Garnet Amphibolite from The Himalaya of Northwestern Bhutan

    Mitchin, Jasper
    Garnet amphibolite collected in northwestern Bhutan was studied to determine the metamorphic conditions the sample underwent. Other studies in the central Himalaya reported eclogite-facies assemblages in mafic rocks, based upon the discovery of omphacite relics, but this could not be confirmed within the sample due to the lack of clinopyroxene. This is likely the result of higher temperatures overprinting the high-pressure peak metamorphic conditions during the post-peak stage of metamorphism. Equilibrium modelling of the sample to produce an isochemical section of mineral assemblages at various pressure and temperature conditions was refined by comparison with the measured modal composition consisting of...

  3. Gravity and Magnetic Investigation of the Surtsey Volcano of Iceland’s Vestmannaeyjar Archipelago

    Sudilovsky, Stas
    This study integrated topography, and anomalous gravity and magnetic data for the crustal attributes of the juvenile Surtsey volcano, which is part of the Vestmannaeyjar archipelago off the southern tip of Iceland on the Atlantic Ridge. Crustal models that jointly satisfy multiple datasets typically are more reliable than one based only on a single set of data. Here, the modeling used Geosoft’s Oasis montage software to access and process the datasets. The modeling suggested that Surtsey’s subsurface architecture is much more extensive than its terrestrial edifice. It also constrained crustal temperature variations that inverse gravity and magnetic anomaly correlations may...

  4. A LITERATURE SURVEY OF NOBLE GAS SOLUBILITY MEASUREMENTS IN FORMATION BRINES TO INTERPRET TRACER EXPERIMENTS

    Ross, James
    Subterranean fluid compounds of interest in the Earth’s crust, such as natural gas, oil, asphalt, condensate, brine, and freshwater are obscured from direct observation. Even with modernizations of technology and science, fluid behavior in the sub-surface remains a mystery. Understanding the fluid interactions that are normally obscured from direct observation, has been accomplished with “tracer” elements and compounds. These compounds are usually inert to decay or reaction in order to preserve distinguishable characteristics. Due to the unique radionucleic composition and relative abundances, the noble gases are particularly powerful natural fluid tracers. Determining expected patterns in a fluid mixture requires knowledge of solubility to...

  5. Interactive Presentations as Accessories to Museum Exhibits

    Bell, Matthew
    The announcement of the collaboration between the American Museum of Natural History (AMNH) and the Center of Science and Industry (COSI) towards the creation of a permanent dinosaur exhibit gave rise for the opportunity to create a presentation that would help enhance the public's perception of topics not explicitly touched upon in the exhibit itself. Analysis of the exhibit outline before public release allowed for the selection of topics specifically related to paleontology and plate tectonics that would be effective in supplementing the information already on display. The presentation was designed through the use of textbooks, lecture materials, and online...

  6. CONSTRAINING THE MEAN RESIDENCE TIME AND FLOWPATH OF GROUNDWATER THROUGH COAL SEAMS USING NOBLE GASES

    Darland, Samuel
    Noble gases, specifically 4He concentrations, can be a useful tool for determining the rates of groundwater recharge, subsurface residence times, and groundwater flowpaths, especially in difficult to model complex formations such as fractured aquifers. This thesis focused on developing an approach to determine the age of formation waters within coalbed methane (CBM) reservoirs in the Powder River Basin (PRB). Specifically, the work explored the difficulties and corrections required to use the 4He in-growth method to determine the residence time of groundwater in the fractured coal seams in this area. Coal seams are considered the primary aquifer of the PRB with...

  7. DEVELOPMENT OF WATER-BASED FRACTURING FLUIDS

    Bonin, Clay
    The physical and chemical properties of unconventional gas shale reservoirs differ significantly from those of conventional reservoirs requiring stimulation of the formation to improve economic recovery rates. Marked improvement in our understanding of the heterogeneous complexities of gas shale formations, new drilling methods and targeted design of novel frac fluids have all converged to make extraction of gas tight formations economically viable. New methods in well stimulation in which the rock is fractured by a pressurized frac fluid now allows the U.S. to expand its domestic production of hydrocarbons to a point where we are now more self-reliant on our...

  8. Rock Properties of Silurian Niagaran Reef Carbonates in Michigan After CO2 Injection

    Keister, Laura
    Carbon capture utilization and storage (CCUS) technologies have been implemented to extract hydrocarbons from depleted oil and gas reservoirs in the northern Silurian Niagaran reef trend in the Michigan Basin. This project analyzed rock properties from trim and intact core samples from a well that experienced CO2 injection, and the rock properties were correlated with depth and diagenesis. Three thin sections from different depths, made from trim samples, were imaged using both digital and polarizing light microscopes. Images were used to analyze fractures, porosity, and mineralogy across the slides. The same features were analyzed for the intact core using X-ray...

  9. ORIGIN OF PYRITE CONCRETIONS FROM THE DUNKIRK SHALE MEMBER OF THE CANADAWAY FORMATION (DEVONIAN), WESTERN NEW YORK

    Yang, Zhe
    SEM and EDX technology has been used to analyze pyrite concretions from black shale layers of the Dunkirk Shale Member of the Canadaway Formation (Upper Devonian) at Point Gratiot, Dunkirk, New York. Point Gratiot is the type locality of the Dunkirk Shale Member. Black-colored spores observed in studied samples are identified as Protosalvinia. Two sizes ranges of spores are present. Smaller spores range in size from 0.5 to1 mm in diameter. Larger spore capsules are 4 to 6 mm in diameter. Small spores tend to be dispersed across bedding planes. Pyrite framboids were observed on the surface of larger spores....

  10. Examination of a method: Testing the Kelly-Barton Method on the Herðibreið tuya, Northern Volcanic Zone, Iceland

    Oborn, Collin
    Iceland is the most volcanically diverse location on the planet as nearly every type of volcano can be found on this island. Volcanoes are an existential and powerful threat to the modern world on both short and long time scales, and understanding their inner workings is a necessary first step in protecting society from one of nature's deadliest and most destructive activities. This study focused on a specific locality in Iceland's Northern Volcanic Zone, the volcano known as Herdubreid (Herðubreið). The purpose of this research was to determine the depth of crustal magma bodies that feed Herdubreid using a new...

  11. Water Quality Impacts of the Citarum River on Jakarta and Surrounding Bandung Basin

    Quay, Coleman
    The Citarum River within the Bandung Basin of the island of Java, India, is world renowned for its horrendous pollution. A number of pollutants exceed the limits of the official water quality regulation standards of Indonesia. Chemical analysis shows a high BOD (biochemical oxygen demand) and COD (chemical oxygen demand) along with high concentrations of heavy metals. Agricultural and domestic waste also play major roles in pollution of the river. Flooding is common within the region and current trends show a consistent degradation in water quality. Uncertainty regarding the management and testing of water ways also plays a large roll.

  12. Principal Component Analysis of the Geochemistry of Sediments from Boreholes CRP-2 and CRP-3, McMurdo Sound, Antarctica

    Vennemeyer, William D.
    Boreholes CRP-2 and CRP-3 were drilled in seafloor sediments of McMurdo Sound, Antarctica in the late autumn of 1998 and 1999. Chemical data was recorded along with depth from the borehole. Using Past3 software, this chemical data was run through a principal component analysis to define trends in the data into new axes with the intention of eventually establishing provenance. Once the principal component analysis operation was completed the components were reviewed to find which were most significant. Three principal components were chosen and elements that defined the greatest amount of variation in each principal component were identified. The scores...

  13. The Geology and Hydrogeology of the Teays-Mahomet Aquifer System in East-Central Illinois

    Clark, Casey
    The Teays River was a large system flowing—in what are now the states of Virginia, West Virginia, Ohio, Indiana, and Illinois—from the Tertiary period until glaciation in the Pleistocene. Glaciation during the Pleistocene turned the region through which the Teays River flowed into a region of aquifers. The system of aquifers created during this glaciation in the study region is known as the Teays-Mahomet Aquifer System (TMAS). The TMAS is an extensive formation spanning across the Midwestern United States. Specifically, the study focuses on the TMAS in east-central Illinois. The Mahomet Sand Member and Glasford formation are a few of...

  14. Comparing Mud Volcano Characteristics and Association with Oil and Gas

    Aaron, Fransiscus
    Looking the variability of mud volcanoes and its association with oil and gas throughout the world and how some mud volcanoes more unique compare to others. By comparing several mud volcanoes in different continents and looking through their geologic structure history several different cases are found on some mud volcanoes. The presence of mud volcanoes in Azerbaijan affects the flow of mud and fluid, causes the surrounding water to have higher concentration of metal ions compared to sea water and water expelled from other mud volcanoes worldwide. The presence of mud volcanoes in Yinggehai Basin and South Taiwan Basin to...

  15. Subsurface Conditions Promoting Groundwater Contamination At Elkhart, Indiana

    Brady, Allyson
    This study investigated multiple plumes of chlorinated solvents in groundwater at Elkhart, Indiana in relation to the subsurface lithology, the geologic history of the area, and key factors controlling the migration of contaminants. The aim of this study was to understand seminal events promoting the development of these extensive contamination plumes within the study region. This was done through the analysis of literature surveys along with the examination and interpretation of a collection of gamma-ray logs available from Indiana Geological Survey. The logs covered much of the area affected by the variety of large contaminant plumes. The shallow geology proved...

  16. GROUND WATER CONTAMINATION OF THE OLD O-FIELD SITE ABERDEEN PROVING GROUND MD.

    Morgal, Louis
    The United States military is known for unsafe practices in disposing of toxic chemicals and materials. Aberdeen Proving Grounds in Maryland is no exception. One of the dumping sites located in the proving grounds is called the O-Field area. This site is located on Edgewood area of the base in a location called Gunpowder Neck. The O-Field area is only a few hundred meters east of Gunpowder River and two hundred meters south of Watson Creek. The site was set up during World War II and was used through the 1970’s. The contamination at the site includes but is not...

  17. Folding mechanisms within the Saltville Thrust Sheet, Valley and Ridge Province, Tennessee

    Swartz, Christopher H.
    Field and laboratory analysis of structures present in an outcrop of a massive carbonate unit within the Ordovician Sevier Shale, located in the Saltville thrust sheet in northeast Tennessee, indicates that folding was produced by a buckling mechanism accommodated by flexural-slip/flow during thrust sheet transport. The modified class 1B geometry of the folds and the kinematic indicators found in the outcrop are consistent with these folding mechanisms. Analysis of timing relations of the structures, as well as comparisons to studies performed on similar rock units in the vicinity of this outcop, indicate that modification of the folds by a flattening...

  18. Folding mechanisms within the Saltville Thrust Sheet, Valley and Ridge Province, Tennessee

    Swartz, Christopher H.
    Field and laboratory analysis of structures present in an outcrop of a massive carbonate unit within the Ordovician Sevier Shale, located in the Saltville thrust sheet in northeast Tennessee, indicates that folding was produced by a buckling mechanism accommodated by flexural-slip/flow during thrust sheet transport. The modified class 1B geometry of the folds and the kinematic indicators found in the outcrop are consistent with these folding mechanisms. Analysis of timing relations of the structures, as well as comparisons to studies performed on similar rock units in the vicinity of this outcop, indicate that modification of the folds by a flattening...

  19. Phylogeny of freshwater crayfish

    Stigall, Alycia L.
    The phylogeny of freshwater crayfish, including both fossil and extant taxa, is assessed using morphologic analysis and nucleotide sequencing. Based on external morphologic characters, primarily characters of the carapace and appendages, the crayfish are reconfirmed as a monophyletic group. The nearest sister taxon to the crayfish is the Chilenophoberidae. Within the crayfish, the longstanding distribution of species among three families is supported. The superfamily Astacoidea is redefined to include three families, Astacidae, Cambaridae, and Parastacidae. By including the Parastacidae in the Astacoidea, the superfamily Parastacoidea becomes superfluous and is now suppressed. The Astacoidea is characterized by several synapomorphies: a diaresis...

  20. The paleoecology of the Marshalltown Formation of the central and southern New Jersey Upper Cretaceous

    Slimmer, Dorothy Fay
    No embargo

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.