15 research outputs found

    2013 Fine Art Graduation Exhibition Catalogue

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    Art CafeGraduation Exhibition 2013 Fanshawe College Fine Art Program The Arts ProjectApril 10-20, 2013 Opening Reception: Saturday April 13, 20137pm-10pm Guest Speaker: Laura Mitrowhttps://first.fanshawec.ca/famd_design_fineart_gradcatalogues/1011/thumbnail.jp

    Blanket performance and radioactive waste of fusion reactors:a neutronics approach

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    Fusion energy for use in power plants is a continually developing area and many of the related parameters are not yet fixed. The investigation of fusion neutronics and development of computational approaches for assessment is imperative in the road to commercial realisation of fusion power. This research has explored blanket performance, including tritium breeding and the shielding requirements, and assessed radioactive waste, utilising the 3-D Monte Carlo transport code MCNP, and the activation inventory code FISPACT. The performance of some solid and liquid breeder materials has been compared with regards to tritium breeding, energy production and shielding. In the case of novel spherical tokamak concepts, that make use of high temperature superconducting magnets and have no inboard blanket, scoping studies have been performed to investigate the impact of shielding requirements on how small the tokamak can be. Fusion power plants will not produce high level waste, as seen in nuclear fission plants, however the components and structures will become active as a result of interactions with high energy neutrons. A suitable radioactive waste management plan will be required in order to deal with this material appropriately, with an aim to recycle or clear from regulatory control all materials 100 years after shutdown. The study indicates that through suitable material selection and the use of component dismantling the requirement could potentially be satisfied. In terms of computational methods, the neutron flux averaging has been assessed throughout the work and has shown in neutronics estimates to produce some substantial differences. The recently developed unstructured mesh approach to neutronics modelling has been explored and the potential use for more accurate radioactive waste inventory calculations. Although the analysis and comparison shows promising results, it still requires significant development and improvement in the work flow to create a robust neutronic analysis method

    Rural and Urban Differences in VR Caseloads and Delivery Practices

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    Each year, Vocational Rehabilitation (VR) agencies provide case level data to the Rehabilitation Services Administration (RSA). This compiled data, named RSA 911, includes consumer characteristics, services provided, and employment outcomes of all case closures in the past year. Researchers and program evaluators use the RSA 911 data system to examine productivity across agencies, demographic and disability groups, and other service factors. The RSA 911 does not include information about where the consumer was served, such as county or zip code. This limits outcome evaluation for various geographies. For instance, while VR programs can be evaluated or compared across states, more micro-level analyses cannot be performed. This has implications for making service delivery improvements in rural communities since the majority of cases originate from urban locations and practice recommendations may become skewed towards improving the urban case mix. To address this shortcoming, we compiled 2008 and 2009 RSA 911 data with geographic indicators from 47 VR agencies, including 17 general, 11 blind/low vision, and 19 combined (general/blind) programs. This factsheet reports on demographic and services outcome differences based on rural and urban location

    Benchmarking comparison and validation of MCNP photon interaction data

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    The objective of the research was to test available photoatomic data libraries for fusion relevant applications, comparing against experimental and computational neutronics benchmarks. Photon flux and heating was compared using the photon interaction data libraries (mcplib 04p, 05t, 84p and 12p). Suitable benchmark experiments (iron and water) were selected from the SINBAD database and analysed to compare experimental values with MCNP calculations using mcplib 04p, 84p and 12p. In both the computational and experimental comparisons, the majority of results with the 04p, 84p and 12p photon data libraries were within 1σ of the mean MCNP statistical uncertainty. Larger differences were observed when comparing computational results with the 05t test photon library. The Doppler broadening sampling bug in MCNP-5 is shown to be corrected for fusion relevant problems through use of the 84p photon data library. The recommended libraries for fusion neutronics are 84p (or 04p) with MCNP6 and 84p if using MCNP-5

    Development of fusion blanket technology for the DEMO reactor

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    The viability of various materials and blanket designs for use in nuclear fusion reactors can be tested using computer simulations and as parts of the test blanket modules within the International Thermonuclear Experimental Reactor (ITER) facility. The work presented here focuses on blanket model simulations using the Monte Carlo simulation package MCNPX (Computational Physics Division Los Alamos National Laboratory, 2010) and FISPACT (Forrest, 2007) to evaluate the tritium breeding capability of a number of solid and liquid breeding materials. The liquid/molten salt breeders are found to have the higher tritium breeding ratio (TBR) and are to be considered for further analysis of the self sufficiency timing

    Leaping for Literacy Through Tutoring

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    Scholarship about the science of reading affirms the importance of teaching phonics and phonemic awareness to beginning readers. However, despite evidence from neuroscience explaining how people learn to read, poor practices in teaching children persist in elementary schools. Further, online learning during the Covid-19 pandemic negatively affected young learners\u27 reading progress. Recognizing the statewide literacy gaps, the Ohio Department of Education awarded Shawnee State University a two-year grant, Literacy LEAPS, to strengthen literacy among children from kindergarten through fourth grade through small group tutoring. SSU education majors tutor children in 30-minute sessions three to four times a week using a curriculum rooted in the science of reading. In this session, four Literacy LEAPS tutors will share information about the urgency and importance of literacy intervention, the documented growth of children in the program, and their personal and professional growth as preservice educators from this experience

    On the design and test of a neutron collimator for real-time neutron imaging in the MeV range

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    A neutron collimator has been designed in MCNP5 and tested for feasibility of use in imaging applications. Tungsten, polyethylene, PVC and lead have been compared as collimating materials for neutrons in the MeV energy range; tungsten is predicted to be the most successful material for a restricted volume, giving the highest signal-to-noise ratio and the best resolving power. Experimental data has been used to confirm that tungsten works effectively as a neutron collimator although some discrepancies between real and MCNP5 results were observed. A suspension of tungsten powder in polyethylene has also been tested to address the machining difficulties, mass and cost issues associated with tungsten. This material performs midway between tungsten and polyethylene for a constant volume, and more successfully than tungsten for a constant mass therefore giving this material potential as a collimation material in some scenarios. Further MCNP5 modelling has been performed by varying model parameters and monitoring the collimator functions produced by these changes. These results are conclusive but dependent on the applications of the imaging system

    Benchmarking comparison and validation of MCNP photon interaction data

    No full text
    The objective of the research was to test available photoatomic data libraries for fusion relevant applications, comparing against experimental and computational neutronics benchmarks. Photon flux and heating was compared using the photon interaction data libraries (mcplib 04p, 05t, 84p and 12p). Suitable benchmark experiments (iron and water) were selected from the SINBAD database and analysed to compare experimental values with MCNP calculations using mcplib 04p, 84p and 12p. In both the computational and experimental comparisons, the majority of results with the 04p, 84p and 12p photon data libraries were within 1σ of the mean MCNP statistical uncertainty. Larger differences were observed when comparing computational results with the 05t test photon library. The Doppler broadening sampling bug in MCNP-5 is shown to be corrected for fusion relevant problems through use of the 84p photon data library. The recommended libraries for fusion neutronics are 84p (or 04p) with MCNP6 and 84p if using MCNP-5

    Proposal to characterise legacy Sellafield ponds using SONAR and RadLine™

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    Sellafield Nuclear Reprocessing Plant in Cumbria contains storage ponds built in the 1950s which was originally intended to hold spent nuclear fuel for reprocessing, and eventual production of weapons grade plutonium. Parts of the spent fuel have corroded; some are buried under a layer of sediment or intertwined with other debris and removal and destruction of this nuclear waste is not a trivial task due to elevated radiation levels. We propose a system in collaboration with the National Nuclear Laboratory (NNL) to characterise the ponds using a system containing three main parts; an ultrasonic SONAR system used to physically map the pond, scintillator based radiation detector (known as RadLineTM) used to map the pond from a radiation point of view, and bespoke software intended to combine the physical and radiation plots of this environment to create an overall 3D source map
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