Browsing Theses and Dissertations by Title
Now showing items 5119-5138 of 6862
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Prospective Estimation of Radiation Dose and Image Quality for Optimized CT Performance
(2016)X-ray computed tomography (CT) is a non-invasive medical imaging technique that generates cross-sectional images by acquiring attenuation-based projection measurements at multiple angles. Since its first introduction in ... -
Prospects for Effective Climate Change Adaptation in Post-Conflict Nepal
(2010-04-30)For the developing world, the impacts of climate change - from sea level rise and more potent and erratic precipitation patterns to rapid deglaciation - are becoming an increasingly frightening reality. Adaptation planning ... -
Prospects of Carbon Dioxide Emissions at a Power Company in Korea
(2009-04-17)Issues on green house gas emissions and climate change are principle global concerns which should be addressed urgently. Among the emitters, power generation sector is the most critical point source of CO2. In fact, many ... -
Prostate Bed Motion During Post-Prostatectomy Radiotherapy
(MEDICAL PHYSICS, 2012-06) -
Protean: The Graduate Liberal Studies Magazine at Duke University (Prototype)
(2015-05-14)This analytical essay describes the creation of a prototype online magazine, titled Protean, for a Graduate Liberal Studies (GLS) program like the one at Duke University. Industry level production standards were implemented ... -
Protected Area Impacts on Land Cover in Mexico
(2013-04-15)Although national and international efforts to mitigate deforestation during the last few decades have had some limited impact, they have failed to substantially slow the loss of tropical forests. This MP applies an approach ... -
Protected Area Impacts on Land Cover in Mexico
(2013-04-15)Although national and international efforts to mitigate deforestation during the last few decades have had some limited impact, they have failed to substantially slow the loss of tropical forests. This MP applies an approach ... -
Protected Areas’ Deforestation Spillovers and Two Critical Underlying Mechanisms: An Empirical Exploration for the Brazilian Amazon
(2015)To date, the creation of protected areas (PAs) has been the dominant policy in the efforts to protect forests. Yet there is still somewhat limited rigorous evidence about the impacts of PAs on rates of deforestation. ... -
Protecting beaches and sea turtles: An analysis of beach nourishment in North Carolina, the impacts on nesting loggerhead sea turtles, and how sea level rise will transform the status quo.
(2014-04-22)Federally protected loggerhead sea turtles rely on wide sandy beaches for their terrestrial reproductive phase. Accustomed to hurricanes and erosion, North Carolina has taken to extensive beach nourishment efforts for ... -
Protecting Health From Rising Air Pollution
(2017-04-28)Objective: Air pollution is a major public health threat in cities across the world, especially in India. To protect local communities from rising air pollution levels, the Ahmedabad Municipal Corporation (AMC) and the ... -
Protecting Surf Breaks and Surfing Areas in California
(2015-04-21)In California, surfing is part of a 24 billion dollar coastal economy, a form of water-based recreation recognized in state coastal policy, and is positively identified with the state’s broad history and culture. Where ... -
Protein and Drug Design Algorithms Using Improved Biophysical Modeling
(2016)This thesis focuses on the development of algorithms that will allow protein design calculations to incorporate more realistic modeling assumptions. Protein design algorithms search large sequence spaces for protein sequences ... -
Protein Crystallization: Soft Matter and Chemical Physics Perspectives
(2014)X-ray and neutron crystallography are the predominant methods for obtaining atomic-scale information on bimolecular macromolecules. Despite the success of these techniques, generating well diffracting crystals critically ... -
Protein Engineering for Biosensor Development
(2008-11-24)Biosensors incorporating proteins as molecular recognition elements for analytes are used in clinical diagnostics, as biological research tools, and to detect chemical threats and pollutants. This work describes the ... -
Protein S-nitrosylation: Methods of Detection and Regulation
(2009)Protein S-nitrosylation--the post-translational modification of cysteine thiols into S-nitrosothiols--is a principle mechanism of nitric oxide-based signaling. Studies have demonstrated myriad roles for S-nitrosylation in ... -
Protein Tyrosine Phosphatase Receptor Type S (PTPRS) Regulates Hematopoietic Stem Cell Self-Renewal
(2015)Hematopoietic stem cell (HSC) self-renewal, proliferation and differentiation are regulated by signaling through protein tyrosine kinases (PTK) such as c-kit, Flt-3 and Tie2. PTKs work in concert with receptor protein ... -
Protein-DNA Binding: Discovering Motifs and Distinguishing Direct from Indirect Interactions
(2009)The initiation of two major processes in the eukaryotic cell, gene transcription and DNA replication, is regulated largely through interactions between proteins or protein complexes and DNA. Although a lot is known about ... -
Proteins Inside Cells and On the Surface of Membranes: Developing Three Dimensional In-Cell NMR and Structural Characterization of a Trimeric Membrane Proximal External Region Construct from HIV-1 gp41
(2011)Our ability to understand complex biological processes is enhanced by studying the components of those processes at atomic resolution. Major advancements in technology and methodology have been made that continue to improve ... -
A Protocol for Co-Digestion Systems as a Source of Carbon Offsets for the Duke Carbon Offsets Initiative
(2012-04-26)The mission of the Duke Carbon Offsets Initiative (DCOI) is to help Duke University achieve its commitment to carbon neutrality by 2024. DCOI also seeks to effect environmental change at the local, state, regional and ...
