Browsing Faculty of Arts and Sciences by Keyword "Engineering, Environmental"
Now showing items 1-17 of 17
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Atmospheric Observations and Models of Greenhouse Gas Emissions in Urban Environments
(2015-05-18)Greenhouse gas emission magnitudes, trends, and source contributions are highly uncertain, particularly at sub-national scales. As the world becomes increasingly urbanized, one potential strategy for reducing these ... -
CleaN waTer: A Water Filtration System Powered by the Sun and Carbon Nanotube (CNT) Technology
(2016-06-21)The CleaN waTer filtration device strives to effectively and efficiently remove 100% of bacteria from water using solar power. Access to clean water is a common problem for communities throughout the world. Many of these ... -
CNT-based Electrochemical Filter for Water Treatment: Mechanisms and Applications
(2015-05-07)Water treatment is a critical global challenge requires innovated effective solution. Conventional treatment methods includes membrane filtration, adsorption and electrochemical oxidation of organics. This dissertation ... -
Comparison and Calibration of Climate Proxy Data in Medieval Europe
(2017-10-13)Two major sources of information on paleoclimate are historical documentary and scientific paleo proxy data. Recently, interdisciplinary research groups have sought to mesh historical and scientific data to gain a ... -
Development, Aircraft Integration, and Field Deployment of a CO2 Herriott Cell to Measure Arctic Carbon Fluxes
(2017-01-13)The warming of the Arctic, as mediated by climate change, will precipitate a feedback effect. Should the carbon in soil be processed and emitted as the greenhouse gases CO2 and CH4, the feedback effect will be positive; ... -
Drivers of Long-Term Variability in Amazon Forest Carbon Fluxes
(2017-05-03)Amazon forests are potentially an important sink of atmospheric carbon dioxide (CO2). However, the present magnitude of net CO2 uptake by intact Amazon forests and the controls upon seasonal, yearly, and decadal variability ... -
Electrokinetic and Electrochemical Methods for Microbial and Organic Fouling Mitigation at Liquid-Solid Interfaces
(2016-05-06)Organic and microbial fouling are the initial steps for biofilm formation, resulting in severe fouling problems in many environmental and engineered applications including membrane water filtration. Electro-active methods ... -
Embracing Uncertainty as the New Norm: A Risk-Based Portfolio Approach for Urban Water Investment Planning
(2016-01-26)Providing secure and reliable water supply service to major urban areas has become a considerable challenge in recent years on a global basis. Rapid population growth, urbanization and development needs put enormous ... -
Evaluating Potential Linkages of the Pitas Point and Ventura Fault Systems, California: Implications for Seismic Hazards
(2017-07-14)The offshore Pitas Point and onshore Ventura faults are aligned along strike, which has led some in the geological community to propose their connection at depth. However, this connection requires that onshore and offshore ... -
Human Impacts on Atmospheric Particulate Matter in Amazonia
(2018-09-16)Human activities can change the concentration, chemical composition, and properties of atmospheric particulate matter (PM). A quantitative understanding of human impacts on PM is essential for accurate modeling of anthropogenic ... -
Isoprene Photooxidation via the Hydroperoxyl Pathway
(2015-01-23)Photooxidation of isoprene has a large influence on the oxidation capacity of the atmosphere and is a significant source of secondary organic material (SOM) of atmospheric particles. A quantitative understanding of isoprene ... -
The Physicochemical Properties of Secondary Organic Materials
(2015-05-20)The physicochemical properties of the secondary organic materials (SOMs) that constitute the particle phase have potentially important consequences for the growth, the reactivity, and ultimate fate of atmospheric organic ... -
Solar Photovoltaic Power: Short Term Volatility and Its Future Under Climate Change
(2016-06-21)Solar power is becoming increasingly important as a source of energy in the United States. While solar represents a low-emission source of energy, integrating it into the electrical grid is challenging. The power output ... -
Stable Isotope Systematics of Abiotic Nitrate and Nitrite Reduction Coupled With Anaerobic Iron Oxidation: the Role of Reduced Clays and Fe-Bearing Minerals
(2015-04-08)Under anaerobic conditions, it is widely assumed that nitrate (NO3-) and nitrite (NO2-) reduction is primarily the result of microbial respiration (Burgin and Hamilton, 2007; Granger et al., 2008). However, it is also ... -
The Strontium Isotope Record of Zavkhan Terrane Carbonates: Strontium Isotope Stability Through the Ediacaran-Cambrian Transition
(2015-04-08)First order trends in the strontium isotopic (87Sr/86Sr) composition of seawater are controlled by radiogenic inputs from the continent and non-radiogenic inputs from exchange at mid-ocean ridges. Carbonates precipitated ... -
Tailoring Carbon Materials for Next-Generation Desalination
(2018-04-17)Mounting stressors to existing water supplies, whether by increased human consumption or changing environmental conditions, are creating water shortages worldwide. Consequently, meeting future water demand will require ... -
Uptake of Organic Molecules by Atmospheric Particles
(2018-05-11)The uptake of molecules onto atmospheric particles can be influenced by particle viscosity and physical state because of effects on species diffusivity. Relative humidity is a key regulator. Herein, the uptake of gas-phase ...