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- Aerosol MA 80-I (1)
- Aquifer remediation (1)
- Conductivity (1)
- Dense non-aqueous phase liquids (DNAPLs) (1)
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- Dowfax 8390 (1)
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- Silica sand (1)
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- South Florida (1)
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- Steol CS-330 (1)
- Surfactant-enhanced aquifer remediation (SEAR) (1)
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Articles 1 - 3 of 3
Full-Text Articles in Environmental Monitoring
Trophic Interactions Associated With Indroduction Of The Invasive Quagga Mussel In Lake Mead, Nevada, Eric Michael Loomis
Trophic Interactions Associated With Indroduction Of The Invasive Quagga Mussel In Lake Mead, Nevada, Eric Michael Loomis
UNLV Theses, Dissertations, Professional Papers, and Capstones
The ecology of Lake Mead is experiencing an uncertain future since the documented arrival of the invasive quagga mussel. Interactions among constituents of the food web will undoubtedly be altered over time, adversely affecting the popular sport fishery. This study is the first in Lake Mead to present historic trends in lower trophic interactions among threadfin shad and zooplankton before, and shortly after, the arrival of quagga mussels. Shad stomach content analysis revealed cladocerans and copepods were the dominant identifiable food items in Las Vegas Bay and Overton Arm of Lake Mead. Baseline energetics data through the use of stable …
Geoelectrical Response Of Surfactant Solutions In A Quartzitic Sand Analog Aquifer, Meghan Therese Magill
Geoelectrical Response Of Surfactant Solutions In A Quartzitic Sand Analog Aquifer, Meghan Therese Magill
UNLV Theses, Dissertations, Professional Papers, and Capstones
In this project, the resistivity and phase shift of ten surfactant aqueous solutions in a sand matrix were measured using spectral induced polarization (SIP). In addition, specific conductivity, pH, dissolved oxygen, and dielectric constant measurements of the solutions were also evaluated. The frequency range assessed was 0.091-12000Hz. The surfactants, which are typically used in the remediation of tetrachloroethylene, were Aerosol MA 80-I, Dowfax 8390, and Steol CS-330. The surfactants were mixed into solutions of both deionized and tap water at varying concentrations and injected into a closed system of silica sand. The surfactant treatments altered resistivity, specific conductivity, and pH …
Soil Moisture And Water Stage Estimation Using Precipitation Radar, Sumit Puri
Soil Moisture And Water Stage Estimation Using Precipitation Radar, Sumit Puri
UNLV Theses, Dissertations, Professional Papers, and Capstones
In south-western United States, soil moisture data is important for drought studies in the region which is experiencing a drought for many years, whereas in South Florida, water stage data is required by hydrologists to monitor the hydrological flow in wetlands. Soil moisture data and water stage data are not sufficiently available due to sparse monitoring stations. Installation of dense measuring stations over an extended area is costly and labor intensive. Therefore, there is a need to develop an alternative method of measuring soil moisture and water stage. Microwave remote sensing has proven to be a useful tool in the …