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Full-Text Articles in Life Sciences

Microbe-Mineral Relationships And Biogenic Mineral Transformations In Actively Venting Deep-Sea Hydrothermal Sulfide Chimneys, Tzihsuan J. Lin Aug 2014

Microbe-Mineral Relationships And Biogenic Mineral Transformations In Actively Venting Deep-Sea Hydrothermal Sulfide Chimneys, Tzihsuan J. Lin

Doctoral Dissertations

This dissertation uses a combination of microbiology, mineralogy, and geochemistry to understand dissimilatory iron reduction in hyperthermophilic archaea and the role and potential impact of these and other vent microorganisms within active deep-sea hydrothermal vent chimneys. The central objective of the dissertation is to determine if mineral composition and chimney type are among the primary determinants of microbial community composition and hyperthermophilic, dissimilatory iron reducer growth, in addition to other environmental factors such as nutrient availability, temperature, pH, and chlorinity. This is done using samples and organisms collected from the Endeavour Segment of the Juan de Fuca Ridge in the …


Qualitative And Comparative Analysis Of Stormwater Management In The Tan Brook Watershed, Natalia Von Hausen, Robert F. Smith Jan 2014

Qualitative And Comparative Analysis Of Stormwater Management In The Tan Brook Watershed, Natalia Von Hausen, Robert F. Smith

Research

The Tan Brook Watershed is both a daylighted and diverted underground stream that runs through the Town Center of Amherst and the campus of UMass Amherst. Various stormwater management practices have been used to infiltrate stormwater runoff from streets, lots, buildings and/or vehicles. These systems are custom-designed relative to the surrounding permeability of the soil, vegetation and geographical topography. Some systems have higher success rates than others.