Browsing Department of Earth and Environmental Sciences by Title
Now showing items 75-94 of 201
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GLOBAL MARINE CARBON EXPORT PRODUCTION DURING EOCENE HYPERTHERMAL EVENTS
(2017-12-20)Early Eocene hyperthermal events can be an analog for global warming. Pelagic marine barite in deep sea sediment is a proxy for marine export production of organic matter into the deep ocean. Pelagic marine barite accumulation ... -
Growth And Toxicity Of Prymnesium parvum In Long-term Cultures At Low Temperature And Salinity
(Environmental & Earth Science, 2011-07-14)There is a paradox reported concerning observations of toxic blooms of Prymnesium parvum in winter in Texas (USA), and its growth performance in the laboratlry. Culture experiments indicate relatively high optimum temperature ... -
Growth Rates Of The Harmful Alga Prymnesium parvum: An Attempt To Identify The Salinity Threshold For Algal Blooms
(Environmental & Earth Science, 2013-03-20)Harmful algal blooms due to Prymnesium parvum have occurred in Texas for nearly three decades in waters of moderate salinity. More recently, blooms have occurred in locations such as West Virginia, in waters of very low ... -
Heavy Metal Contamination Of Road Dust In Lanzhou, China
(Environmental & Earth Science, 2012-07-25)Road dusts were collected from the streets of the city of Lanzhou, the capital and largest city of Gansu Province in Northwest China. The potential health hazard posed by contaminated road dusts may be considerable for ... -
High Resolution Geochemistry Of The Cretaceous Eagle Ford Shale, Bee County, Texas
(Geology, 2013-03-20)The Eagle Ford Formation of Bee County, Texas is a sporadically laminated carbonaceous dark mudrock. The depositional area of the Eagle Ford Formation stretches across the state of Texas in a northeast-southwest trend. ... -
History-matching and Forecasting of Three Unconventional Oil and Gas Reservoirs Using Decline Analyses and Type Curves
(2019-05-10)Reservoir modeling of shale gas and tight oil presents numerous challenges due to complicated transport mechanisms and the existence of fracture networks. Even then, oil and gas companies have not slowed down on shale ... -
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 Possible Hydrologic Recharge Zones In The Sangre de Cristo Aquifer on The Milliken Ranch in Las Vegas, NM
(Geology, 2012-04-11)Groundwater at the periphery of mountain ranges in the desert southwest has its provenance in two possible sources: local or regional flow. This study sought to identify the source of deep groundwater from wells on ranches ... -
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 Buffer Zone Changes on the Architecture Of The Paleozic Lower Cutler Beds Of Utah
(Environmental & Earth Science, 2012-04-11)The Shafer basin fluvial units, as being part of the Paradox fold and fault belt basin, received sediments from alluvial fans through mixed braided-meandering river systems that eroded the clastic rocks of the Uncompahgre ... -
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 ... -
IMPROVING REGIONAL HYDROLOGY FORECASTING FOR THE NORTH CENTRAL TEXAS REGION UTILIZING CONDITIONAL ENSEMBLE STREAMFLOW AND HYDROMETEOROLOGICAL CONDITION PREDICTIONS WITH ARTIFICIAL NEURAL NETWORK MODELING
(2017-05-10)The predictive skill of hydrologic variables such as streamflow and soil moisture, in North Central Texas, has improved substantially in the recent decades. However, substantial model-data biases are still present during ... -
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 ... -
Integrated Chemostratigraphy And Paleoceanography Of The Mississippian Barnett Formation
(Geology, 2013-03-20)The Barnett Formation was deposited on a gently sloping marine margin that ultimately became the Fort Worth Basin (FWB), a foreland basin that evolved during the late Paleozoic Era. The FWB formed as a result of the early ... -
Interpreting unique colloidal response of TiO2 nanomaterials to controlled sonication for understanding their assembly configuration
(2015-11-24)It is important to determine the assembly configuration of engineered nanomaterials (ENMs) particularly between aggregate or agglomerate because the assembly configuration greatly influences their fate and transport behavior ... -
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 ...