Browsing Nuclear Engineering - Ph.D. / Sc.D. by Title
Now showing items 346-365 of 516
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Nanoscopic materials response to radiation and corrosion environments
(Massachusetts Institute of Technology, 2019)In this thesis, computational and experimental techniques are developed to study the response of materials to radiation and corrosion environments at nanoscale, respectively. Firstly, controlled ion radiation has become a ... -
Near field three-dimensional coded aperture techniques : theoretical and experimental exploration for applications in imaging and detection systems
(Massachusetts Institute of Technology, 1998) -
Near-wall modeling of bubbly flows
(Massachusetts Institute of Technology, 2018)Multiphase computational fluid dynamics (M-CFD) codes are gaining acceptance in the nuclear industry for the prediction of thermal-hydraulic behavior, offering the potential to improve the operation, economics, and safety ... -
Neoclassical polarization
(Massachusetts Institute of Technology, 2006)Sheared zonal flow is known to be the predominant saturation mechanism of plasma turbulence. Rosenbluth and Hinton(R-H) have shown that the zonal flow level is inversely proportional to the plasma radial polarizability due ... -
Neutral particle dynamics in the Alcator C-mod tokamak
(Massachusetts Institute of Technology, 1995) -
Neutron scattering from non-spherical nuclei
(Massachusetts Institute of Technology, 1964) -
Neutron scattering investigations on the liquid-liquid transition in deeply cooled confined water
(Massachusetts Institute of Technology, 2015)Water is ubiquitous but mysterious. It exhibits anomalous thermodynamic behaviors at low temperatures. In addition, the glassy water, also called amorphous ice, exhibits polyamorphism. These phenomena could be understood ... -
Neutron scattering investigations on the unusual phase behavior of water
(Massachusetts Institute of Technology, 2010)Water is the most ubiquitous substance on earth, and is essential to sustain all known forms of life. However, despite centuries of research, a coherent picture of the unusual phase behavior of water is so far lacking. The ... -
New problems in queues--social injustice and server production management
(Massachusetts Institute of Technology, 1987) -
Nondestructive analyses of irradiated MITR fuel by gamma-ray spectroscopy.
(Massachusetts Institute of Technology, 1966) -
Nonlinear digital computer control for the steam generator system in a pressurized water reactor plant
(Massachusetts Institute of Technology, 1987) -
Nonlinear methods for solving the diffusion equation.
(Massachusetts Institute of Technology, 1977) -
A novel low-dose approach to active detection of shielded high-Z materials
(Massachusetts Institute of Technology, 2015)This research demonstrates that multiple mono-energetic gamma lines produced from low threshold, high-Q nuclear reactions can be used to detect the presence of high-Z material shielded in low- and medium-Z cargo. Specifically, ... -
Novel Resonance Self-Shielding Methods for Nuclear Reactor Analysis
(Massachusetts Institute of Technology, 2016)In the simulation of the behavior of neutrons in a nuclear reactor, there has long been a dichotomy in solution techniques. One can use Monte Carlo methods, known to be very accurate and problem agnostic but also very ... -
A novel technique for guiding ablative therapy of cardiac arrhythmias
(Massachusetts Institute of Technology, 1999) -
A novel vacuum window for megawatt gyrotrons
(Massachusetts Institute of Technology, 2001)This thesis describes a new microwave output window for megawatt power level, 110 GHz gyrotrons. The window uses two spherically polished sapphire elements separated by a nearly uniform gap of about 1 mm. Pressurized, ... -
Nuclear asset shutdown under uncertainty
(Massachusetts Institute of Technology, 2017)The restructuring of the power sector that began in the 1990s created acute competition for nuclear power plants. While merchant reactors benefited from this change in the early years, recently they started to retire for ... -
Nuclear magnetic resonance microscopy
(Massachusetts Institute of Technology, 1999)This thesis describes the design and applications of an improved Nuclear Magnetic Resonance (NMR) microscope, which permits MRI to study small sample sizes ( < 2mm) at high resolution (up to 2[mu]m). The effects of molecular ... -
Nuclear magnetic resonance microscopy and diffusion
(Massachusetts Institute of Technology, 2003)The goal of the work described in this thesis is to develop the methodology and instrumentation for studying neuron physiology and activation in vivo at near cellular resolution. Using biocompatible crosslinked Hemoglobin ... -
Nuclear magnetic resonance studies of structure and dynamics in heterogeneous samples
(Massachusetts Institute of Technology, 2003)The aim of this work is to develop and implement methods for determining the local structure and dynamics of heterogeneous samples (e.g. rocks, rubber, porous materials, etc.). From the physical point of view, the ...
