Browsing PhD Dissertations - DO NOT EDIT by Title
Now showing items 26-45 of 57
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Liquid Flow and Gas Diffusion in Natural Rocks: Experimental and Simulation Studies
(2023-08-24)Natural rocks, as key components in energy and environmental geosciences, play crucial roles in groundwater extraction, geological storage of high-level nuclear waste, geothermal energy mining, and petroleum exploration ... -
Machine Learning-based Methods for the Segmentation of Scanning Electron Microscopy Images of Fine-Grained Shale Samples
(2022-12-15)The segmentation of scanning electron microscopy (SEM) images is critical yet time-consuming for geological studies, as it will need to differentiate the boundaries for different mineral objects to facilitate subsequent ... -
Modelling PM2.5 concentrations and spatial correlation with weather conditions and adult asthma in north Texas in 2014
(2020-05-29)The questions to be answered by this study are whether weather conditions correlate with PM2.5 concentrations, and whether there is a correlation between asthma-related hospital admissions and PM2.5 concentrations. The ... -
Motion And Rigidity Of The Caribbean Plate And Geodetic Observations Of Dominica, Lesser Antilles
The currently accepted kinematic model of the Caribbean plate presented by DeMets et al. (2007), is based on velocities from 6 continuous and 14 campaign GPS sites. This work attempts to refine the current plate model by ... -
MULTI-SCALE AND MULTI-APPROCH INVESTIGATIONS OF PETROPHYSICAL PROPERTIES AND FLUID FLOW IN NATURAL ROCKS
(2022-05-09)Natural rock is one of the most important geological attributes on the Earth that have been widely related to human daily life in various aspects. Rocks are usually utilized with respect to their petrophysical properties ... -
A Multiphysics Approach: Thermodynamics, Material Mechanics And Fluid Dynamics Of Magma Systems At Active Volcanic Regions
Understanding the genesis, incubation, evolution and equilibration of silicic magma reservoirs that drive and source volcanic activity all over the planet is fundamental to the discipline of geology. The subsurface processes ... -
Numerical Simulation Of The Base-level Buffers And Buttresses Conceptual Model Of Fluvial Systems
(Geology, 2012-07-25)A Buffer in fluvial stratigraphy is a potentiometric surface which defines either: a) the lowest possible depth to which streams will incise; or b) the maximum elevation to which aggradation will occur; together, these ... -
On-road Measurement Of NOx And CO₂ Emissions From Biodiesel Produced From Different Feedstocks
(Environmental & Earth Science, 2012-07-25)Biodiesel has generated increased interest in the US and elsewhere recently as an alternative to petroleum-derived diesel. Because it can be produced from domestic feedstocks such as soybeans, canola oil, and even recycled ... -
Petrophysical Studies on Woodford Shale in Oklahoma and Wolfcamp Shale in Texas: A Multiple-Approach Methodology
(2022-05-09)The successful development of oil and gas from unconventional reservoirs in the United States proves the high petroleum potential that shale rock reserves. Petrophysical studies on shale rocks are an important part of ... -
Predicting The Geographic Distribution Of Ancient Soils With Special Reference To The Cretaceous
(Environmental & Earth Science, 2012-04-11)Different kinds of soils form in different climatic regimes. Soils closely match climatic conditions. Therefore, they are one of the best indicators of past climates. This study uses the "climate envelope" technique developed ... -
Predicting Variability Of Basal Scour And Quantifying Vertical Connectivity For Channel-belt Reservoirs Using Observations From The Holocene Mississippi River And Channel-belt
Assessment of potential for draining unpenetrated but closely stacked channel-belt reservoirs from an existing belt penetration depends upon an understanding of the methods of and the likelihood for connectivity between ... -
Prenatal Exposure to Per- and Polyfluoroalkyl Substances and Child Neurodevelopment
(2021-12-10)Pregnant women are exposed to per- and polyfluoroalkyl substances (PFAS) primarily via ingestion of contaminated food, water, and house dust. PFAS in pregnant women can be transferred to their child through the placenta ... -
Proximity Of Cancer Cases To Airports Within The State Of Texas
(Environmental & Earth Science, 2012-07-25)Determining whether the incidence of cancer may be associated with pollutants emitted from airports is important in order to better plan cities to reduce such incidences. This research aims to answer the following questions: ... -
REMEDIATION OF CONTAMINATED DUMPSITE SOIL: AN EVALUATION OF SOIL AMENDMENTS IN COMBINATION WITH PHYTOREMEDIATION
(2022-08-24)Contamination of soils and water from open dump site leachate is a frequent problem in developing nations. Water supplies are threatened when water percolates through the waste, bringing with it a variety of substances, ... -
REMOVAL OF PERFLUOROOCTANOIC ACID USING ZEROVALENT IRON BASED MATERIALS
(2018-09-12)Perfluorinated alkyl substances (PFASs) are highly persistent organic contaminants that have become a global health concern. Few studies so far have demonstrated successful decomposition of PFASs under ambient condition. ... -
Salinity, pH, Temperature, Desiccation And Hypoxia Tolerance In The Invasive Freshwater Apple Snail Pomacea insularum
(Environmental & Earth Science, 2007-08-23)Pomacea insularum is a tropical and subtropical, ampullariid, freshwater prosobranch snail that is native to slow-flowing rivers and canals in South America. It is a member of the genus, Pomacea, and, like other species ... -
Sensitivity Of The Late Permian Climate To Tectonic And Radiative Forcing Changes: Implications For The Mass Extinction
(Environmental & Earth Science, 2014-12)The largest mass extinction occurred near the Permian-Triassic boundary (ca. 252 Ma). Significant carbon isotope shifts indicate that perturbations in the carbon cycle occurred during the Late Permian and persisted into ... -
Sensitivity of the Younger Dryas climate to changes in freshwater, orbital, and greenhouse gas forcing in comprehensive climate models
(2016-05-11)The Younger Dryas cooling event (~12,900 years before present) was the most recent abrupt climate change in the geologic record where climate for the Northern Hemisphere returned to a near-glacial state. The cause of this ... -
SHALE GAS/OIL RESERVOIR CHARACTERIZATION AND MATURITY DETERMINATION BASED ON VARIOUS EXPERIMENTAL ANALYSES
(2019-05-31)Despite the successful shale hydrocarbon exploration and production in the U.S. started about 20 years ago, the producing wells experience a current low total recovery of tight oil (5%-10%) and shale gas (12%-30%). One of ... -
Source Characterization Of African Soils Using Computer Controlled Sem Analysis
(Environmental & Earth Science, 2014-12)An investigation is underway to determine whether African dust can be chemically distinguished by regions and whether it is developed through Pedogenic or Aeolian processes. A total of 29 dust samples were taken from the ...