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Full-Text Articles in Physical Sciences and Mathematics
Star Formation In The Ngc 5846 Group Of Galaxies, Lucas Viani
Star Formation In The Ngc 5846 Group Of Galaxies, Lucas Viani
Honors Theses
Environmental interactions in groups and clusters of galaxies are thought to alter the evolution of member galaxies. The goal of this research was to analyze gas and star formation properties of galaxies in the NGC 5846 group. A sample of group galaxies was observed at CTIO (Cerro Tololo Inter-American Observatory in Chile) and KPNO (Kitt Peak National Observatory) using broadband red (R) and narrowband hydrogen emission line (Hα) filters. The images were reduced and analyzed to extract star formation rates and distributions. Neutral hydrogen data from the Arecibo Legacy Fast ALFA (ALFALFA) survey were used to measure the cold neutral …
An Analysis Of Horizontal Gas Drilling And Its Impact On Spot Market Pricing: A Focus On The Marcellus Shale Production Potential, Samuel O'Connell
An Analysis Of Horizontal Gas Drilling And Its Impact On Spot Market Pricing: A Focus On The Marcellus Shale Production Potential, Samuel O'Connell
Honors Theses
This paper attempts to quantify how the rapid increase in shale gas production in the past fifteen years has impacted regional natural gas spot prices. This method of natural gas extraction-pumping water mixed with sand and clay first vertically and then horizontally, with clay and sand particulates holding fractures open to allow the flow of natural gas-has a shorter well lifespan and faster decline rate than conventional wells. Through analyzing the degree of market integration between shale gas production and spot prices, we can quantify what impact different shale plays have had on the regional pricing of natural gas. With …
Alumina-Based Aerogels By Rapid Supercritical Extraction For Use In Green Automotive Catalysis, Nicholas J. Dunn
Alumina-Based Aerogels By Rapid Supercritical Extraction For Use In Green Automotive Catalysis, Nicholas J. Dunn
Honors Theses
Aerogels are highly porous solids with low bulk density, high specific surface area, high thermal stability and tunable chemical composition. These properties make aerogels interesting for use as catalysts in automotive exhaust remediation. Noble metals such as platinum are currently used for this function, but are costly and harmful to the environment. Aerogels offer a potential alternative to noble metals that could reduce both the cost and environmental impact associated with catalytic converter production. Alumina and nickel-alumina aerogels have shown activity in catalyzing exhaust processing reactions. The environmental impact of the production of aerogel catalysts could be further reduced by …