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West Nile Virus Monitoring In North Central Texas And A Proposed Surveillance Model
(Environmental & Earth Science, 2007-09-17)
West Nile virus monitoring among mosquito populations in Tarrant County, Texas has been ongoing for more than 4 years. Coupled with RT-PCR Testing by the North Texas Regional Laboratory, Tarrant County and the cities that ...
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, ...
The Formation And Obduction Of Ophiolites Since The Late Precambrian
(Geology, 2007-08-23)
Ophiolite formation and emplacement has been episodic since the Late Precambrian. This research study examines ophiolites that formed during the Cenozoic, Mesozoic, Paleozoic and Late Precambrian. The ophiolites were ...
Selenium Speciation Along A Groundwater Flow Path In The Carrizo Aquifer, Southeastern Texas, USA
(Geology, 2007-08-23)
Selenium concentration and speciation [Se (VI), Se (IV) and Se (-II)] was determined along a flow path in the Carrizo Sand aquifer (southeastern Texas). Groundwater sampling was carried out in March 2006, from ten wells ...
Geochemical Investigation Of Tungsten In Two Groundwater Flow Systems: The Carrizo Sand Aquifer, Texas, USA, And The Aquia Aquifer, Maryland, USA
(Environmental & Earth Science, 2008-08-08)
Groundwater sampled were collected from well sites located within the Carrizo Sand aquifer in Atascosa and McMullen counties in Texas, and also within the Aquia Aquifer, Maryland in the counties of Queen Anne's, Kent, and ...
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 ...
Statistical Analysis Of Rock Fabrics
(Geology, 2007-08-23)
The main goal of the work is to present new procedures for statistical
analysis of fabric data for structural geology. After an
introduction to the problems of orientation analysis, discussion
of different types of the ...
Geology Of The Northwestern Apache Mountains, Southeast Culberson County, West Texas, U.S.A.
(Environmental & Earth Science, 2009-09-16)
Middle Permian marine (Bell Canyon Formation) strata along the southwestern margin of the Delaware Basin in southeastern Culberson County, Texas provide excellent exposures of basinal and slope strata, useful fossils for ...
Southern Illinois Paleoclimate Determined From Variations In Iron Oxide Content
(Geology, 2008-08-08)
Diffuse reflectance spectroscopy was used to determine the relative abundance of the iron oxides hematite and goethite in a loess and paleosol sequence from an unglaciated area of southern Illinois. Factor analysis of ...
Studies of the Performance, Stability and Reliability of Various Configurations of the Activated Sludge Process at Full-Scale Municipal Wastewater Treatment Plants
(Engineering, Environmental, 2009-05-15)
This research presents a performance, stability and reliability analysis of five configurations of activated sludge process, viz., conventional, contact stabilization, complete mix, extended aeration and sequencing batch ...