Browsing by Author "Waller, Ed"
Now showing items 1-18 of 18
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Characterization of nanopores with internal cavities for DNA manipulation using Langevin dynamics simulations
Magill, Martin (2016-12-01)A novel nanopore geometry is proposed, in which a larger internal cavity is located inside a traditional nanopore. Polymer translocation through this geometry is studied using coarse-grained Langevin dynamics. The most ... -
Coded aperture imaging application in one-sided imaging of visually obscured objects
Scott, William (2011-05-17)The physical properties of visible light and its interaction with matter create obstructions the human eye cannot explore. High energy radiation has been used as an alternative to visible light to penetrate these concealed ... -
A comparison of three computational phantoms for calibration of a radiation portal monitor used for measurement of internal contamination.
Bellman, Christopher (2014-12-01)The goal of this research was to investigate if portal monitors could measure internally deposited radioisotopes over a short count time (1 second) with a detection limit sufficient to measure 1/10 of an annual limit on ... -
Design and characterization of next-generation tissue equivalent proportional counters for use in low energy neutron fields
Ali, Fawaz (2014-04-01)Tissue Equivalent Proportional Counters (TEPCs) are devices that can measure the radiation dose levels for the mixed neutron and gamma ray fields that are encountered in nuclear facilities. TEPC designs typically consist ... -
Development of an autonomous radiation mapping robot
Hosmar, Michael Edward (2017-04-01)The development of an autonomous robotic platform for generating radiation maps is presented. An integrated autonomous exploration algorithm, Particle Swarm Optimization algorithm, and the ability to accurately localize ... -
Electron paramagnetic resonance for dosimetry in freshwater aquatic environments
Tzivaki, Margarita (2020-08-01)This thesis explores the feasibility of detection of radiological contamination in aquatic environments through Electron Paramagnetic Resonance (EPR) spectroscopy. Exposure of freshwater ecosystems is possible as a result ... -
Encapsulated source contact dose estimates incorporating secondary electron emission
Cleary, James (2015-04-01)Secondary electron emission generated at the surface of thin material from interaction with gamma rays form a significant component of the surface dose. The intensity of this emission is known to vary with material composition ... -
A generic methodology for the three dimensional display of radiation fields
Chaput, Joseph (2010-04-01)The radiation field visualization options available for engineers, scientists and health physicists have traditionally been based in the 2d realm, with techniques such as the generation of isodose curves. From the perspective ... -
Improving x-ray operator performance using virtual environments
Breitinger, Mark (2021-08-01)There are significant limitations in the training for x-ray operators under current regulatory and operational constraints. Advances in technology now allow for the creation of realistic virtual reality environments, which, ... -
Local dose coefficients for radionuclide contamination in wounds
Galipeau, Natasha (2020-05-01)The objective of this research is to create local dose coefficients for radionuclide contaminated wounds to accompany dose coefficients obtained by Oak Ridge Institute for Science and Education looking at whole body effects ... -
Localization of a robotic crawler for CANDU fuel channel inspection
Manning, Mark (2017-06-01)This thesis discusses the design and development of a pipe crawling robot for the purpose of CANDU fuel channel inspection. The pipe crawling robot shall be capable of deploying the existing CIGAR (Channel Inspection and ... -
Monte Carlo simulations for the purpose of efficiency curve calibration for the Fastscan whole body counter
Graham, Hannah Robyn (2015-08-01)In order to be able to qualify and quantify radiation exposure in terms of dose, a Fastscan whole body counter must be calibrated correctly. Current calibration methods do not take the full range of body types into ... -
New approaches in training for in situ visualization of ionizing radiation measurements
Chaput, Joseph (2022-08-01)Surveying an environment for sources of ionizing radiation requires the use of measurement tools and skills developed from training in order to understand and analyze measurements. Recent advances in technology allow for ... -
On the integration of Computational Fluid Dynamics (CFD) simulations with Monte Carlo (MC) radiation transport analysis
Ali, Fawaz (2009-12-01)Numerous scenarios exist whereby radioactive particulates are transported between spatially separated points of interest. An example of this phenomenon is, in the aftermath of a Radiological Dispersal Device (RDD) ... -
Opportunities for the deep neural network method of solving partial differential equations in the computational study of biomolecules driven through periodic geometries
Magill, Martin (2022-08-01)As deep learning emerged in the 2010s to become a groundbreaking technology in machine vision and natural language processing, it also ushered in many new algorithms for use in scientific research. Among these is the neural ... -
Robotic radiation mapping using modelling and probabilistic analysis of sparse data
McDougall, Robin (2015-07-01)An approach for generating radiation intensity maps, comprised of a mobile robotic platform and an integrated radiation model, is presented, and its ability to generate accurate radiation maps in simulation studies as well ... -
Simulation of in-core dose rates for an offline CANDU reactor
Gilbert, Jordan (2016-04-01)This thesis describes the development of a Monte Carlo simulation to predict the dose rates that will be encountered by a novel robotic inspection system for the pressure tubes of an offline CANDU reactor. Simulations were ... -
Towards low dose retrospective dosimetry on shelled species
Hassan, Amna (2020-08-01)This work investigates calcified tissues of shelled species for retrospective dosimetry using electron paramagnetic resonance (EPR) spectroscopy. To determine applicable samples for low dose studies, shells of crustacean ...