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 5 of 5 for “"Nuclear wastes"”.
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Structure and properties of iron phosphate glasses: A novel host matrix for the vitrification of high-level nuclear wastes
… containing up to 40 wt% of one or more common nuclear waste components such as Na<sub>2</sub>O, CS<sub>2</sub>O, SrO, UO<sub>2</sub>, or Bi<sub>2</sub>O<sub>3</sub> have been investigated. The analytical tools used are Fe-57 Mössbauer, x-ray absorption, x-ray photoelectron, and Raman …
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First principles simulation of cement for nuclear waste disposal
The immobilization of wastes that arise from the decommissioning of the UK civil nuclear program is a significant challenge facing both industry and researchers. The current plan for nuclear industry is to dispose of wastes within a deep underground facility and to use cement to immobilise many of …
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Coupled Hydro-Mechanical Modelling of Gas Migration in Saturated Bentonite
… of a deep geological repository (DGR) where nuclear wastes are disposed, as it has several desirable properties for sealing the nuclear wastes, including low permeability, low diffusion coefficient, high adsorption capacity and proper swelling ability. Nevertheless, gas migration in saturated …
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Innovative design of uranium startup fast reactors
… role in saving uranium resources and reducing nuclear wastes. Conventional fast reactors rely on transuranic fuels from reprocessing facilities, which are not available in the U.S. Thus, deployment of fast reactors requires decoupling from reprocessing facilities. This motivates the design and …
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Dynamic soil pressures on deeply embedded structures
… and underground cylindrical tanks storing nuclear wastes, and develop rational but simple methods of analysis and design for such systems. The first part of the study, reported in Chapters 2 and 3, is concerned with the dynamic modeling and response of soil-wall systems. Simple approximate …