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 73 for “"Transmutation"”.
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Transmutation
<p>My artistic practice is about change itself. I am inspired by the doubling and layering effects that came out of Surrealist Photography. Scale, fracture, and doubling are intentional components of my process. I combine those methods to create complex works of art, focusing on the untamable light …
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Dual neutral particle induced transmutation
Although nuclear transmutation methods have been around for decades, they all focus solely on neutron induced reactions. Recent novel concepts have sought to use neutrons as well as photons for active interrogation of cargo to detect the smuggling of highly enriched uranium -- a concept that would …
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Transmutation: One Thing Becoming Another
<p>My art emerges from decades of the experience of building myself, sensitively aware of accumulated experience and the weight of accrued memory. Responding to this life I so deeply appreciate the longer I live, as sculptor, painter and poet, I merge these individual aesthetic observations into a …
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Non-Neutron Transmutation of Spent Fuel
… assess the feasibility of utilizing non-neutron transmutation to target Long-Lived Fission Products (LLFPs), which account for 99% of the long-term radiotoxicity of spent nuclear fuel. With half-lives ranging from 100,000 to 10,000,000 years, LLFPs pose a significant obstacle to long-term …
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Target Design and Optimizations for Spent Fuel Transmutation
… research are to explore the design of a proton transmutation facility, as well as to determine the optimal LLFP target-blanket material configuration for maximizing the transmutation efficiency. This thesis analyzes the use of intermediate energy beams of 18-70 MeV from commercial cyclotrons for …
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Criticality and thermal analyses of separated actinides in transmutation
… chemical preparation of spent nuclear fuel for transmutation. Once separated from the other minor actinides, the isotopes can lead to nuclear fission with the subsequent release of a large amount of radiation. A neutron criticality code was used to determine the effective neutron multiplication …
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Not (Just) Donne: Alchemical Transmutation as Immortality in Shakespeare’s Sonnets
<p>Shakespeare, in his sonnets, employs alchemical references in the sonnets that ultimately fail, in order to show how fruitless it is to pursue immortality. The poet urges the fair friend, who himself is like the self-consuming ouroboros, to father a child that will continue his legacy and allow …
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Optimization of actinide transmutation in innovative lead-cooled fast reactors
… for application to dedicated fuel cycles for transmutation. A methodology is developed that assesses the actinide incineration performance of several transmutation fuel cycles, both single and multi-tiered, on the basis of performance indicators related to the reduction of actinide mass at the …
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Transmutation rates in the annulus gas of pressure tube water reactors
… sources in both PTR and PT SCWR fuel channels. Transmutation rates of annulus gases have been calculated for different gases (CO2, N2, Ar and Kr) at different pressures and temperatures in both fuel channels. The variation of the transmutation rates, neutron fluxes and gas densities in the …
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Study of nuclear transmutation using cyclotron for post-CMOS activation of Beta emitters
… for radioisotope activation produced by nuclear transmutation is presented. Activation of the precursor occurs by nuclear transmutation and results in the desired beta emitting radioisotope. A microfabricated p-n diode on a silicon substrate coated with specific radioisotope precursors is used as …
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Corrosion and high-temperature deformation characteristics of a target structural material for transmutation applications
Tensile properties of quenched and tempered martensitic Alloy EP 823, a target structural material, have been evaluated at temperatures ranging from ambient to 600°C as a function of three different tempering times. The susceptibility to stress corrosion cracking and localized corrosion (pitting …
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Feasibility Study of Minor Actinide Transmutation In Light-Water Reactors With Various Am/Cm Separation Efficiencies
… in the UNF. The strategy of Partition and Transmutation (P&T) separates the components of UNF to treat each separated stream in the manner that is most appropriate. The MA stream can be reprocessed and fabricated with MOX fuel and recycled in a reactor. Through transmutation, reductions in …
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Three-dimensional modeling and simulation of manufacturing processes for transmuter fuel fabrication
… into shorter-lived radionuclides is known as transmutation. The feasibility assessment of fuel manufacturing for transmutation is necessary for the overall success of the transmutation project. As part of that assessment, this paper reviews current methodologies for handling spent nuclear fuel …
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Rethinking the light water reactor fuel cycle
… offering the possibility for partitioning and transmutation of long lived radioactive waste, enhanced proliferation resistance, and improved utilization of natural resources. It is generally believed that dedicated advanced reactor systems have to be designed in order to perform the task of …
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Assessment of innovative fuel designs for high performance light water reactors
… loaded with transuranic-bearing fuel for transmutation, as well as those using UO2 fuel. A proposal for using silicon carbide duplex as fuel cladding is investigated. The cladding consists of a monolithic inner layer surrounded by a tightly wound fiber-matrix composite. The monolith layer …
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Edgardo Rodriguez Julia: Peregrinaciones, Heroes Y Tumbas en La Formacion De La Nacion Puertorriquena
… figures that illustrates the evolution and the transmutation of times and values: the 18th-century infant, el Nino Aviles; the Puerto Rican governor Luis Munoz Marin; and the Afro Caribbean musician, Ismael Rivera. Each narrative represents a stage in the development of a contested Puerto Rican …
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The use of reduced-moderation light water reactors for transuranic isotope burning in thorium fuel
… Use of reduced-moderation LWRs can improve TRU transmutation performance, but the VC is still severely limiting for these designs. Reduced-moderation pressurized water reactors (RMPWRs) and boiling water reactors (RBWRs) are considered in this study. Using thorium (Th) instead of U as the …
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Human Theatre
… with poetic narration methods, completing the transmutation of time to the juxtaposition of space.
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