Browsing PhD Dissertations - DO NOT EDIT by Title
Now showing items 13-32 of 57
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Effects Of Climate Change And Perturbation In Biogeochemical Cycles On Oxygen Distribution And Ocean Acidification
(Environmental & Earth Science, 2014-12)Dissolved oxygen (DO) concentration in the ocean is an important component of the marine biogeochemical cycles. In this study a global oceanic carbon cycle model (HAMOCC 2.0) was used to address how oxygen minimum zones ... -
Experimental and theoretical studies of fluid-solid coupling processes of tight rock media
(2023-08-24)**Please note that the full text is embargoed until 8/1/2025** ABSTRACT: This study covers the application of continuum mechanics in the realm of rock work in geological studies. Continuum mechanics encompasses two major ... -
FACTORS ASSOCIATED WITH ADULT ASTHMA RELATED EMERGENCY ROOM DISCHARGES IN NORTH CENTRAL TEXAS IN 2010 - 2014
(2019-12-06)Asthma is a common chronic disease of the airways characterized by recurrent reversible airway obstruction. More than 25 million Americans have asthma. In this study, factors associated with adult asthma related emergency ... -
Fusulinid and conodont biostratigraphy of the Upper Pennsylvanian–Cisuralian Riepe Spring Limestone, Spruce Mountain Ridge, Elko County, Nevada, U.S.A.
(2018-12-06)The Upper Pennsylvanian-Cisuralian (lower Permian) mixed carbonate-siliciclastic strata exposed at Spruce Mountain Ridge, Elko County, Nevada, record the shallow-marine microfauna and oscillating depositional history of ... -
Hydrogeochemical Evolution Of Arsenic Along Groundwater Flow Paths: Linking Aqueous And Solid Phase Arsenic Speciation
(Environmental & Earth Science, 2007-08-23)The central hypothesis of this Doctoral research work is that changes occurring along groundwater flow paths that accompany chemical weathering and oxidation-reduction reactions catalyze both arsenic (As) mobilization from, ... -
Identifying Source of Lead Particles in Floor Dust Using Computer Controlled Scanning Electron Microscope (CCSEM)
(2016-05-10)Identifying the sources of lead (Pb) in indoor dust by analysis of the contents of the dust provides an opportunity to mitigate the source of contamination. In this study, it is hypothesized that in residential properties ... -
The Impact Of Impoundment And Urbanization On Shallow Groundwater Conditions In The Joe Pool Lake Catchment, Texas
(Environmental & Earth Science, 2014-12)This dissertation is an assessment of the shallow groundwater (SGW) regime within the drainage area of Joe Pool Lake (JPL), an impoundment on Mountain Creek (MC) located in Grand Prairie, Texas. A thin zone of highly-weathered ... -
The Impact Of Sprawl On Transportation Energy Copnsumption And Transportation Carbon Footprint In Large U.S. Cities
(Environmental & Earth Science, 2014-03-10)Today, climate change and energy shortage are major concerns among scientists, politicians, and economists. For decades in the U.S., emphasis has been placed on improving energy efficiency through technological advances. ... -
IMPLICATIONS OF LITHOFACIES ASSOCIATION AND ARCHITECTURE FOR LOW AND HIGH-ACCOMMODATION SYSTEM TRACTS FROM THE SANDSTONE DOMINATED ZONE ( THE BARREN SERIES) OF THE CRETACEOUS-PALEOCENE RATON FORMATION, TRINIDAD, COLORADO
(2017-01-02)The Raton Formation is an Upper Cretaceous and Lower Paleocene unit that is interpreted to be deposited in various stages of high-accommodation fluvial systems. High-accommodation flood basin deposits are generally considered ... -
Indoor Air Quality In Schools: An Investigation Of The Impact Of Outdoor Air Quality, School Layout, And Room Type
(Environmental & Earth Science, 2014-09-17)Indoor air quality (IAQ) in educational facilities is a very important aspect of the educational process because it may affect the students and staff health and performance. This study was conducted during the 2012-2013 ... -
Investigating the frictional properties of organic matter and pore structure of organic-rich shales with atomic force microscopy and scanning electron microscopy
(2022-12-19)Understanding geomechanical properties of shales, such as stiffness properties and fracture toughness, is important in different areas of petroleum industry-related activities including fracturing efficiency, petroleum ... -
Investigation Of How Microbes Involved In Anerobic Digestion Of Vinasse Change As Functions Of Temperature, Vinasse Compositions And Time
(Environmental & Earth Science, 2014-09-17)Recent fossil fuel supply crunches and price spikes have prompted increased interest in ethanol as an alternative transportation fuel. However, vinasse, the liquid residue left from the distillation of ethanol, poses serious ... -
Investigation of petrophysical properties and fluid migration in unconventional oil/gas reservoirs
(2019-05-07)Petrophysics deals with the physical and chemical properties of petroleum-bearing rocks and their interactions with associated fluids. The investigation of petrophysical properties of interest, such as porosity, specific ... -
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 ...