Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"LANL"”.
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COMMUNITY ANALYSIS OF A UNIQUE FULL-SCALE WASTEWATER TREATMENT PLANT AS REVEALED BY 454-PYROSEQUENCING
… National Laboratory Sanitary Wastewater System (LANL SWWS) located in Los Alamos, New Mexico. This plant experiences highly variable flow and utilizes glycerin as a supplemental carbon source due to low-strength carbon influent. In addition, the plant experienced an upset in 2012 with respect to …
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Development of Monte Carlo models of a gamma-ray nondestructive assay system for nuclear material control and accountability
… often faced at Los Alamos National Laboratory (LANL): electrorefining salt (ER) residues and holdup in gloveboxes. For holdup measurements, accuracy is inherently limited because the exact distribution of material is unknown, which can lead to high uncertainties in reported masses. While the …
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Ionization Chamber Design, Development, and Testing for the UNM Fission Fragment Spectrometer
… underway at Los Alamos National Labortory (LANL). The SPIDER project is intended to be a multi-armed spectrometer that will use high resolution measurements and event by-event analysis to add to the library of nuclear fission data. Our group at the University of New Mexico is working as a …
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Pulse shaping techniques for mega ampere current on Atlas pulsed power machine
… designed by Los Alamos National Laboratory (LANL) to perform high energy density experiments in support of weapon-physics and basic research programs. The current pulse generated by Atlas is a damped sinusoid that rises to nearly 30 MA in 6 microseconds as it flows through the load (target). …
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Laser induced breakdown spectroscopy of martian breccia Northwest Africa 7034: comparison with Mars Science Laboratory results
… instrument at Los Alamos National Laboratory (LANL) at a 1.6 m standoff distance under 7 Torr CO2. Each LIBS location was pulsed with 150 shots at 3 Hz and 13.5 mJ/pulse. Comparison of NWA 7034 LIBS results with the bulk composition acquired with electron probe microanalysis (EPMA) show …
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Flexure based mounts for sensitive payloads : a management and engineering study
… was achieved. The historical organization of LANL influences the design space for this project, and understanding those relationships provides insight into concept generation and selection. In addition, the current organizational structure within the laboratory as well as with its customers …
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Study of geometry effects on local corrosion rates for Lbe loop
… and constructed in Los Alamos National Lab (LANL) to obtain the experimental data. This loop is a multi-section closed system that differs in diameter from one part to another. As a result, an intensive study on the geometry effect is necessary and valuable. In this thesis, this problem was …
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Development of 11-plex assay for the rapid screening of samples for detection of Shiga toxin-producing E. coli
… patented at Los Alamos National Laboratory (LANL) that uses flow cytometry and multiplex microsphere arrays for detection of nucleic acid based signatures. By using MOL-PCR for detecting unique STEC DNA signatures in samples from the beef supply chain (farm to table) this assay will provide a …
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Measurement of the Michel Parameter Rho Using the MEGA Positron Spectrometer
… (LAMPF) of Los Alamos National Laboratory (LANL) in New Mexico, USA, in 1993. The existing experimental set-up that was built for the MEGA experiment was used for the RHO measurement. The experiment was a collaboration of about 50 physicists from Los Alamos National Laboratory, Stanford …
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Coupling Computationally Expensive Radiative Hydrodynamic Simulations with Machine Learning for Graded Inner Shell Design Optimization in Double Shell Capsules
… shell campaign at Los Alamos National Lab (LANL). The double shell campaign is interested in implementing graded inner shell layers to their capsule geometry. Graded inner shell layers are expected to improve stability in the implosions with fewer sharp density jumps, but at the cost of …
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Modeling and Analysis of Actinide Diffusion Behavior in Irradiated Metal Fuel
… conducted at Los Alamos National Laboratory (LANL) in support of on-going activities related to sensitivity analysis of fuel performance codes. A sensitivity analysis of FEAST-Metal was completed to identify important macroscopic parameters of interest to modeling and simulation of metallic …
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Mode Choice Methodology in TRANSIMS
… funding at the Los Alamos National Laboratory (LANL). It is an integrated system of travel forecasting models designed to give transportation planners accurate, complete information on traffic impacts, congestion, and pollution by simulating second-by-second movements of every person and every …
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CFD analysis of three-dimensional thermalhydraulics flow effects on wall concentration gradient profiles for Lbe loop fittings
… are being characterized in the DELTA loop at LANL. STAR-CD is the simulation package used to make these predictions, which include detailed 3-D velocity, temperature and concentration gradient profiles of the corrosion/precipitation on the inner surface of these fittings. The different …
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Investigation and characterization of single hot spot laser-plasma interactions
… with the Los Alamos National Laboratory (LANL), we have had the opportunity to participate in world-class laser-plasma experiments. The goal of these experiments was to gain a fundamental understanding of LPI by studying the interaction of a single laser hot spot, or speckle, with a …
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Integrating a Regional Planning Model (TRANSIMS) With an Operational Model (CORSIM)
… developed by Los Alamos National Laboratory (LANL) under funding from US DOT, EPA, and Department of Energy. It is an integrated system of travel forecasting models designed to give transportation planners accurate, complete information on traffic impacts, congestion, and pollution by …
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A prototype Compton imager : simulations, measurements and algorithm development
… constructed at Los Alamos National Laboratory (LANL) that uses a combination of silicon and CsI detectors. A model of the PCI has been simulated and validated, showing good agreement with measured data. The angular resolution of the PCI was measured to be 0.156 radians FWHM. Additionally, a …
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Modern Rossi alpha measurements
… by a pulse time tagging system such as the LANL custom designed List-mode module. This thesis examines the implementation of the modern Rossi-α method on the all highly enriched uranium, HEU, Zeus experiment. Measurements are taken at several subcritical configurations, at critical in the …
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JUSTGrid: a pure Java HPCC grid architecture for multi-physics solvers using complex geometries
… is the RoadRunner build by IBM for the DOE/NNSA/LANL with a peak performance of 1456 TFIops. Multi-core processors are now build in every PC for the consumer market and not only for HPC systems. It should be remembered that the computer games industry is responsible for the revolution in high end …
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A statistical study of plasmawaves and energetic particles in the outer magnetosphere
… (GOES), Los Alamos National Laboratory (LANL) satellites, the Polar spacecraft and the Active Magnetospheric Particle Tracer Explorers (AMPTE)/Charge Composition Explorer (CCE), and from ground-based Automatic Geophysical Observatories (AGO). The main findings and achievements in this …
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A 3D Computational Fluid Dynamics Model Validation for Candidate Molybdenum-99 Target Geometry
As part of its nuclear nonproliferation mission, the U.S. Department of Energys Global Threat Reduction Initiative (GTRI) is working to develop a sustainable means for producing the critical medical isotope molybdenum-99 (99Mo) without using highly enriched uranium (HEU). 99Mo is the parent product …