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The diurnal cycle of air pollution in the Kathmandu Valley, Nepal
(Massachusetts Institute of Technology, 2006)
This dissertation describes the most comprehensive study to date of the diurnal cycle of air pollution in the Kathmandu Valley, Nepal -- a bowl-shaped mountain valley of two million people with a growing air pollution ...
Effects of chromium and silicon on corrosion of iron alloys in lead-bismuth eutectic
(Massachusetts Institute of Technology, 2006)
The high power densities and temperatures expected for next generation nuclear applications, including power generation and transmutation systems, will require new types of heat transport systems to be economic. Present ...
Cell-matrix interactions : collagen-GAG scaffold fabrication, characterization, and measurement of cell migratory and contractile behavior via confocal microscopy
(Massachusetts Institute of Technology, 2006)
Three-dimensional, collagen scaffolds are an analog of the extracellular matrix and are used for many tissue engineering applications. While material and microstructural properties significantly affect overall scaffold ...
Quantization and erasures in frame representations
(Massachusetts Institute of Technology, 2006)
Frame representations, which correspond to overcomplete generalizations to basis expansions, are often used in signal processing to provide robustness to errors. In this thesis robustness is provided through the use of ...
Acoustic data communication system for in-pipe wireless sensor networks
(Massachusetts Institute of Technology, 2006)
Sustainability of aging infrastructure is one of the greatest current civil engineering challenges, especially in the case of pipelines, where no direct access is available. Being simultaneously massive and distributed, ...
A consistent segment procedure for solution of 2D contact problems with large displacements
(Massachusetts Institute of Technology, 2006)
Solution of contact problems in solid mechanics using the finite element method is a challenging and non-trivial task. Stable and efficient contact algorithms are required for effective solution of general problems. In ...
Thermophotovoltaics : shaping the flow of thermal radiation
(Massachusetts Institute of Technology, 2006)
This thesis explores the modeling, design, and optimization of photonic crystals as spectral control components for high-performance thermophotovoltaic (TPV) power conversion. In particular, we focus on the use of ...
Transport modeling of simple fluids and nano-colloids : thermal conduction mechanisms and coarse projection
(Massachusetts Institute of Technology, 2006)
In the first part of this thesis, the modes of microscopic energy fluctuations governing heat flow in nano-colloids are quantitatively assessed by combining linear response theory with molecular dynamics (MD) simulations. ...
Mechanistic studies of the Class I ribonucleotide reductase from Escherichia coli
(Massachusetts Institute of Technology, 2006)
Ribonucleotide reductases (RNRs) catalyze the conversion of nucleotides to deoxynucleotides, providing the monomeric precursors required for DNA replication and repair. The class I RNRs are found in many bacteria, DNA ...