Browsing PhD Dissertations - DO NOT EDIT by Issue Date
Now showing items 21-40 of 57
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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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
A MODERN RESERVOIR ANALOG FOR A POORLY DRAINED “HIGH ACCOMMODATION” FLUVIAL SYSTEM: SEDIMENTARY PROCESSES, ARCHITECTURE, AND RESERVOIR CONNECTIVITY OF THE GRIJALVA SYSTEM, TABASCO STATE, MEXICO
(2016-09-12)High-accommodation fluvial systems are subject to much modeling and substantial rock drilling and imagination, but limited modern field observation. The Grijalva River system of Tabasco State, Mexico offers the opportunity ... -
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 ... -
Tectonic processes and continental hydroclimate during the Laramide deformation in the central Rocky Mountains
(2017-05-12)The central Rocky Mountains in western U.S.A. is a geologic province formed by the low-angle subduction of the Farallon oceanic plate under the North American continental plate during the latest Cretaceous–early Eocene ... -
The Negative Impacts of Lead- Contaminated Superfund Sites and the Toxicological Effects on Children in Dallas County
(2018-06-11)This Study was conducted to investigate the toxicological effects of lead on children, from the age of 0 years old to 18 years old, that reside or attend schools, located within the 5-mile radius, of lead contaminated ... -
BENEFITS AND OBSTACLES TO INSTALLING WIND AND SOLAR ENERGY SYSTEMS ON UNIVERSITY CAMPUSES: A TEXAS STUDY
(2018-08-13)There is much known about renewable energy including solar and wind. However, there is little information available regarding the use of wind and solar energy on college and university campuses. As educators and shapers ... -
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. ... -
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 ... -
Community Ecology and Population Dynamics of the Nearshore Marine Fauna in the Middle Atlantic Bight (USA)
(2019-05-06)Natural resources are among the most valuable commodities on earth. Some natural resources (air, land, and water) are essential for human survival and many often constitute a large percentage of local, regional, and national ... -
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 ... -
TWO CRETACEOUS TALES OF THE LAND AND THE SEA
(2019-05-07)The Cretaceous Period (145-66 Ma), with no magnetic reversal for ~79 Ma, is generally termed as the Cretaceous Normal Superchron or the Magnetic Quiet Zone. There is evidence of at least two major large scale, global ... -
TRACING PALEOZOIC SILICICLASTIC SEDIMENT DISPERSAL TO THE FORT WORTH AND MIDLAND BASINS: IMPLICATIONS FOR PALEOGEOGRAPHY AND ORGANIC MATTER ACCUMULATION
(2019-05-14)The Fort Worth and Midland Basins in central and West Texas are major petroleum-producing systems in North America. The provenances of the thick Paleozoic sedimentary rocks in both basins are poorly constrained, although ... -
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 ... -
Controlling factors of river water stable isotope compositions and middle to late Cenozoic deposition and surface uplift history of the southern Rocky Mountains, U.S.A.
(2019-09-03)The Cenozoic topographic evolution of the Rocky Mountains (Rockies) and Great Plains in the western U.S.A. reflect a combination of mantle geodynamic, crustal deformation and surface erosional processes. This region was ... -
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 ... -
Spatio-Temporal Analysis of Asthma Hospitalizations and Associated Factors in Eastern Texas, 2005-2012
(2019-12-09)The prevalence of asthma is increasing for both adult and children in eastern Texas. This study examines the spatial and temporal differences in asthma hospital discharge rates and its association with socioeconomic risk ...