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Now showing items 2611-2620 of 2686
Highly Parallel Magnetic Resonance Imaging with a Fourth Gradient Channel for Compensation of RF Phase Patterns
(2012-08-20)
A fourth gradient channel was implemented to provide slice dependent RF coil phase compensation for arrays in dual-sided or "sandwich" configurations. The use of highly parallel arrays for single echo acquisition magnetic ...
The Impact of a Forest Pathogen on the Endangered Golden-cheeked Warbler
(2012-07-16)
Oak wilt is a fatal disease of oaks caused by the fungus Ceratocystis fagacearum. Loss or degradation of habitat due to the disease may negatively affect the federally endangered golden-cheeked warbler (Setophaga chrysoparia). ...
Essays on the Relationship of Competition and Firms' Price Responses
(2012-02-14)
This dissertation investigates the relationship of competition and firms' price responses, by analyzing: i) whether new entry reduces price discrimination, ii) when incumbents reduce price discrimination preemptively in ...
Improved Algorithms for Discovery of Transcription Factor Binding Sites in DNA Sequences
(2012-02-14)
Understanding the mechanisms that regulate gene expression is a major challenge in biology. One of the most important tasks in this challenge is to identify the transcription
factors binding sites (TFBS) in DNA sequences. ...
Effects of Biochar Recycling on Switchgrass Growth and Soil and Water Quality in Bioenergy Production Systems
(2012-07-16)
Intensive biomass production in emerging bioenergy systems could increase nonpoint-source sediment and nutrient losses and impair surface and groundwater quality. Recycling biochar, a charcoal byproduct from pyrolysis of ...
Regulation of the Nitrogen Fixation Genes in the Heterocystous Cyanobacterium Anabaena sp. Strain PCC 7120
(2012-02-14)
Many multicellular cyanobacteria produce specialized nitrogenfixing heterocysts. During diazotrophic growth of Anabaena (Nostoc) sp. strain PCC 7120, a regulated developmental pattern of single heterocysts separated by ...
Designing An Interplanetary Autonomous Spacecraft Navigation System Using Visible Planets
(2012-07-16)
A perfect duality exists between the problem of space-based orbit determination from line-of-sight measurements and the problem of designing an interplanetary autonomous navigation system. Mathematically, these two problems ...
Electrolytic Methods as a Cost and Energy Effective Alternative of Harvesting Algae for Biofuel
(2012-08-30)
Process variables of electrolytic technology to reduce the energy consumption of harvesting Nonnocloropsis salina were investigated including electro-coagulation, electro-floatation, and electro-flocculation. Electro-coagulation ...
Humor Alert: Muslim and Arab Stand-Up Comedy in Post-9/11 United States
(2012-07-16)
After 9/11, American stand-up comedy includes an increasing presence of Arab and Muslim comedians whose humor engages some of the recurring Islamophobic stereotypes circulating in the United States. These comedians combine ...
Factors Affecting Biodefluorination of Fluorotelomer Alcohols (FTOHs): Degradative Microorganisms, Transformation Metabolites and Pathways, and Effects of Co-substrates
(2012-12-11)
Fluorotelomer alcohols (FTOHs, F(CF2)nCH2CH2OH) are emerging contaminants in the environment. Biodegradation of 6:2 and 8:2 FTOHs has been intensively studied using soils and activated sludge. However, little is known ...