Relevant bibliographies by topics / Nuclear physics. eng

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Nuclear physics. eng'

Author: Grafiati
Published: 4 June 2021
Last updated: 13 February 2022

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Journal articles on the topic "Nuclear physics. eng"

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Solans, V., D. Rochman, H. Ferroukhi, A. Vasiliev, and A. Pautz. "Corrigendum to “Loading optimization for Swiss used nuclear fuel assemblies into final disposal canisters” [Nucl. Eng. Design 370 (2020) 110897]." Nuclear Engineering and Design 371 (January 2021): 111010. http://dx.doi.org/10.1016/j.nucengdes.2020.111010.

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Huang, Dongli, and Hany Abdel-Khalik. "Corrigendum to “Modeling errors-preserving constrained sensitivity analysis” [Nucl. Eng. Design 365 (2020) 110729–110740]." Nuclear Engineering and Design 371 (January 2021): 110982. http://dx.doi.org/10.1016/j.nucengdes.2020.110982.

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Skeiker, Kamal. "The Security and Physical Protection Systems for Nuclear Facilities and Materials." Journal of King Abdulaziz University-Engineering Sciences 22, no. 1 (2011): 169–210. http://dx.doi.org/10.4197/eng.22-1.10.

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Röhrmoser, A. "Erratum to “Core model of new German neutron source FRM II” [Nucl. Eng. Des. 240 (2010) 1417–1432]." Nuclear Engineering and Design 240, no. 10 (October 2010): 3697. http://dx.doi.org/10.1016/j.nucengdes.2010.06.025.

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Sha, W. T., and B. T. Chao. "Corrigendum to “Novel porous media formulation for multiphase flow conservation equations” [Nucl. Eng. Des. 237 (2007) 918–942]." Nuclear Engineering and Design 238, no. 9 (September 2008): 2494. http://dx.doi.org/10.1016/j.nucengdes.2008.02.001.

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Kessler, G., W. Höbel, B. Goel, and W. Seifritz. "Corrigendum to “Potential nuclear explosive yield of reactor-grade plutonium using the disassembly theory of early reactor safety analysis” [Nucl. Eng. Des. 238 (2008) 3475–3499]." Nuclear Engineering and Design 239, no. 4 (April 2009): 830. http://dx.doi.org/10.1016/j.nucengdes.2008.12.002.

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Capps, Nathan, Yong Yan, Alicia Raftery, Zachary Burns, Tyler Smith, Kurt Terrani, Ken Yueh, Michelle Bales, and Kory Linton. "Corrigendum to “Integral LOCA fragmentation test on high-burnup fuel” [Nucl. Eng. Design (2020) 367 110811, ISN 0029-5493]." Nuclear Engineering and Design 377 (June 2021): 111197. http://dx.doi.org/10.1016/j.nucengdes.2021.111197.

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Henley, E. M., and J. P. Schiffer. "Nuclear physics at the end of the century." Reviews of Modern Physics 71, no. 2 (March 1, 1999): S205—S219. http://dx.doi.org/10.1103/revmodphys.71.s205.

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Abdulmohsin, Rahman S., and Muthanna H. Al-Dahhan. "Corrigendum to “Characteristics of convective heat transport in a packed pebble-bed reactor” [Nucl. Eng. Des. 284 (2015) 143–152]." Nuclear Engineering and Design 305 (August 2016): 723. http://dx.doi.org/10.1016/j.nucengdes.2016.05.001.

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Jin, Yue, and Koroush Shirvan. "Corrigendum to “Assessment of coated cladding impact on large-break LOCA with TRACE-DAKOTA” [Nucl. Eng. Des. 374 (2021) 111036]." Nuclear Engineering and Design 377 (June 2021): 111231. http://dx.doi.org/10.1016/j.nucengdes.2021.111231.

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Dissertations / Theses on the topic "Nuclear physics. eng"

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Mírez, Tarrillo Carlos Alberto. "A estrutura do nucleon na QCD e o modelo estatístico a Quarks /." São Paulo : [s.n.], 2010. http://hdl.handle.net/11449/102533.

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Orientador: Lauro Tomio
Banca: Brett Vern Carlson
Banca: Bruno Omar El-Bennich
Resumo: Nessa tese, consideramos um modelo estatíıstico a quarks no qual todos os quarks individuais do sistema (quarks do mar e de valência) são confinados por uma interação efetiva central, relativística, com intensidade e expressões iguais para as componentes escalar e vetorial. Consideramos a distribuição de Fermi-Dirac para os quarks nesse modelo, a densidade de probabilidade para um sistema a quarks com níveis de energia e temperatura T, com potenciais químicos apropriados, correspondentes aos quarks leves up (u) e down (d), de modo que as funções de onda do próton e nêutron fiquem corretamente normalizadas. A diferença entre as interações dos quarks u e d é atribuída às contribuições devidas aos instantons, que são dependentes dos spins dos constituintes, e implicam na diferença de massa entre o nucleon (n1/2) e a ressonância 3/2. Os parâmetros do modelo são fixados por dados experimentais disponíveis. O parâmetro de temperatura T é ajustado pelo valor da violação da regra de soma de Gottfried, e os potenciais químicos pela normalização do nucleon, com o correspondente ajuste dos quarks de valência u e d. Para um melhor ajuste do modelo, acrescentamos efeitos devido aos processos da QCD perturbativa de emissão de glúons por quarks, que são divididos em pares quark-antiquark (os quais geram iguais componentes do mar). Consideramos no modelo que os quarks constituintes no nucleon possuem uma sub-estrutura, que por sua vez é extraída, para os quarks e antiquarks, a partir da função de estrutura do píon. Dentro deste modelo estatístico de quarks confinados linearmente obtemos a assimetria de sabores e a correspondente função de estrutura do nucleon. Obtemos a distribuição da razão e a diferençaa de quarks do mar no próton... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: In this thesis, we consider a statistical quark model where all individual quarks of the system ( sea and valence quarks) are confined by an effective central interaction with intensity and equal expressions for scalar and vector components. We consider the Fermi-Dirac distribution for quarks in this model, the probability density for a quark system with energy levels and temperature T, with appropriate chemical potentials, related to the light quarks up (u) and down (d), to give the correct neutron and proton normalizations. The difference between the interactions of quarks u and d is supposed to come from instanton contributions, that are spindependent of the constituents, implying in the mass difference of nucleon (n1/2) and 3/2 resonance. The model parameters are determined by the available experimental data. The temperature parameter T is adjusted by the value of the Gottfried sum rule violation, and the chemical potentials by the corresponding normalization of the valence quarks u and d in the nucleon. Moreover, to improve the model, we consider perturbative QCD processes of gluon emissions by the quarks, which split into quark-antiquark pairs (to which generates equal components of the sea). Also, as the quarks in the model are considered as having substructure, such quark and antiquark substructure are extracted from the pion structure function. Within this statistical model of quarks confined linearly we obtain the flavor asymmetry and corresponding structure function of the nucleon. We obtain the ratio and the difference of sea quark distributions in the nucleon, given by ¯ d/¯u, ¯ d-¯u, as well as the ratio and the difference of the structure functions of neutron and proton: Fn 2 /Fp 2 and Fp 2 -Fn 2, which are compared with the experimental available results. We made an application of the model, calculating the content of strangeness in the sea of the... (Complete abstract click electronic access below)
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Sánchez, Vega Bruce Lehmann. "Áxions, májorons e neutrinos em extensões do modelo padrão /." São Paulo : [s.n.], 2011. http://hdl.handle.net/11449/102499.

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Orientador: Juan Carlos Montero Garcia
Banca: Alex Gomes Dias
Banca: João dos Anjos
Banca: Marcelo Moraes Guzzo
Banca: Rogério Rosenfeld
Resumo: Nesta tese, partículas tais como áxions, Májorons e neutrinos são consideradas em duas extensões eletrofracas do modelo padrão da física de partículas. Especificamente, os modelos considerados estão baseados nas simetrias de gauge SU(3)L ⊗ U(1)X eSU(2)L ⊗U(1)Y⊗U(1)B−L. Primeiramente, no contexto do modelo 3-3-1 com um sector escalar mínimo é realizado um estudo detalhado referente à implementção da simetria de Peccei-Quinn (PQ) para resolver o problema CP forte. Para a versão original do modelo, que possui apenas dois tripletos escalares, é mostrado que a Lagrangiana total é invariante sobre uma simetria PQ. No entanto, o áxion não é produzido porque um sub-grupo permanece sem quebrar. Embora, neste caso, o problema CP forte possa ser resolvido, a solução é amplamente desfavorecida porque três quarks não têm massa em todas as ordens da teoria de perturbação. A adição de um terceiro tripleto escalar resolve o problema dos quarks sem massa, mas o áxion que aparece é visível. Para fazer o modelo realístico teremos que modificá-lo. É mostrado que a adição de um singleto escalar junto com uma simetria de gauge discreta ZN é capaz de levar a cabo esta tarefa e proteger o áxion de efeitos da gravidade quântica. Para ter segurançaa que a simetria de gauge discreta que protege o áxion é livre de anomalias, é usada uma versão discreta do mecanismo de Green-Schwarz. A seguir, é considerado um modelo eletrofraco baseado na simetria de gauge SU(2)L ⊗U(1)Y⊗U(1)B−L, no qual temos neutrinos de mão direita com números quânticos exóticos e diferentes. Devido a esta particular caraterística, é possível termos de massa e de Yukawa para os neutrinos, com campos escalares que podem adquirir valores esperados do vácuo (VEVs) pertencendo a escalas de energia... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: In this doctoral thesis axions, Majorons and neutrinos are considered into different electro weak extensions of the standar dmodel of the particle physics. Specifically, the two models considered are based on theSU(3)L ⊗U(1)X andSU(2)L⊗U(1)Y⊗ U(1)B−Lgaugesymmetries. Firstly, in the framework of a 3-3-1 model with a minimal scalar sector a detailed study concerning the implementation of the PQ symmetry in order to solve the strong CP problem is made. For the original version of the model, with only two scalar triplets, it is shown that the entire Lagrangian is invariant under a PQ-like symmetry but no axion is produced since aU(1) subgroup remains unbroken. Although in this case the strong CP problem can still be solved, the solution is largely disfavored since three quark states are left massless to all orders in perturbation theory. The addition of a third scalar triplet removes the massless quark states but the resulting axion is visible. In order to become realistic the model must be extended to account for massive quarks and invisible axion. It is shown that the addition of a scalar singlet together with aZN discrete gauge symmetry can successfully accomplish these tasks and protect the axion field against quantum gravitational effects. To make sure that the protecting discrete gauge symmetry is anomaly free, a discrete version of th eGreen-Schwarz mechanism is used. Secondly, an electroweak model based on the gauge symmetrySU(2)L ⊗U(1)Y⊗ U(1)B−L which has right-handed neutrinos with different quantum numbers is considered. Because of this particular feature it is possible to write Yukawa terms, and neutrino mass terms, with scalar fields that can develop VEVs belonging to different energy scales. A detailed study of the scalar and the Yukawa neutrino sectors is made to show that this model is compatible with... (Complete abstract click electronic access below)
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Sereguetti, Janaine Maria. "Efeitos da geometria e da composição no espectro de cristais fotônicos 2D /." Bauru : [s.n.], 2012. http://hdl.handle.net/11449/99733.

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Orientador: Alexys Bruno Alfonso
Banca: Lucila Helena Deliesposte Cesgato
Banca: Clarissa de Almeida Olivati
O Programa de Pós Graduação em Ciência e Tecnologia de Materiais, PosMat, tem carater institucional e integra as atividades de pesquisa em materiais de diversos campi
Resumo: Os cristais fotônicos têm recebido grande atenção da comunidade científica nos últimos anos. As suas aplicações incluem a construção de guias de onda, chips ópticos e células solares, o controle de emissão de radiação e o gerenciamento de informações. Neste trabalho são calculados os modos de propagação de ondas eletromagnéticas em cristais fotônicos bidimensionais. Os cristais estudados são arranjos de fios circulares infinitos de um tipo de meio óptico, imersos numa matriz de outro meio óptico. As estruturas cristalinas consideradas são a quadrada simples, hexagonal simples e honeycomb. É analisada a propagação perpendicular aos fios e, portanto, são consideradas duas polarizações: a transversão elétricas e a transversal magnética. Os cálculos numéricos são realizados para diferentes combinações dos materiais que compõem o cristal fotônico. Isto permite investigar como o espectro fotônico depende da geometria do cristal e do contraste entre os meios ópticos que o compõem. Para resolver a equação de ondas, o campo eletromagnético é expresso como combinação linear de um conjunto de ondas harmônicas planas. Foi encontrado bom acordo entre as frequencia calculadas e resultados disponíveis na literatura do tema, corroborando a existência de gaps fotônicos parciais nas estrutuaras simples e gaps fotônicos completos na estrutura honeycomb. Além disso, verificou-se que o surgimento de gaps requer menor constrate de índice de refração no caso hexagonal, quando comparado com o quadrado
Abstract: Photoic crystals have received some attention from the scientific community in the las years. Their applications include the fabrication of waveguides, optical chips and solar cells, control of radiation emission and information management. In this work, the propagation of electromagnetic waves in two-dimensional photonic crystals is theoretically investigated. The structures under study are periodic arrangements of infinite circular wires of a given optical medium, immersed in a matrix of another optical medium. The considered cyrstalline structures are the simple square, the simple hexagonal and the honeycomb lattices. Only the propagation perpendicular to the wires is analyzed. Hence, we consider two polarizations: transverse electrical and transverse magnetic. The calculations are performed for different combinations of the materials composing the crystal. This allows the investigation of how the photonic spectrum depends on both the crystal geometry and the contrast between the refractuve index of the composing materials. The wave equation is solved by expressing the solution as a linear combination of a set of harmonic plane waves. Good agreement between the calculated frequencies and the results available in the literature is found, thus confirming the existence of partial photonic gaps in the simple lattices and complete photonic gaps in the honeycomb lattice. Moreover, it was verified that occurrence of gaps in the hexagonal case requires less refractive-index contrast, when compared with the square one
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Chowdhury, Muhammad Enamul Hoque. "Simultaneous EEG-fMRI : novel methods for EEG artefacts reduction at source." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14297/.

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This thesis describes the development and application of novel techniques to reduce the EEG artefacts at source during the simultaneous acquisition of EEG and fMRI data. The work described in this thesis was carried out by the author in the Sir Peter Mansfield Magnetic Resonance Centre, School of Physics & Astronomy at the University of Nottingham, between October 2010 and January 2013. Large artefacts compromise EEG data quality during simultaneous fMRI. These artefact voltages pose heavy demands on the bandwidth and dynamic range of EEG amplifiers and mean that even small fractional variations in the artefact voltages give rise to significant residual artefacts after correction, which can easily swamp signals from brain activity. Therefore any intrinsic reduction in the magnitude of the artefacts would be highly advantageous, allowing data with a higher bandwidth to be acquired without amplifier saturation, and facilitating improved detection of brain activity. This thesis firstly explores a new method for reducing the gradient artefact (GA), which is induced in EEG data recorded during concurrent MRI, by investigating the effects of the cable configuration on the characteristics of the GA. This work showed that the GA amplitude and its sensitivity to movement of the cabling is reduced by minimising wire loop areas in the cabling between the EEG cap and amplifier. Another novel approach for reducing the magnitude and variability of the artefacts is the use of an EEG cap that incorporates electrodes embedded in a reference layer, which has a similar conductivity to tissue and is electrically isolated from the scalp. With this arrangement, the artefact voltages produced on the reference layer leads are theoretically similar to those induced in the scalp leads, but neuronal signals are not detected in the reference layer. Therefore taking the difference of the voltages in the reference and scalp channels should reduce the artefacts, without affecting sensitivity to neuronal signals. The theoretical efficacy of artefact correction that can be achieved by using this new reference layer artefact subtraction (RLAS) method was investigated. This was done through separate electromagnetic simulations of the artefacts induced in a hemispherical reference layer and a spherical volume conductor in a time-varying magnetic field and the results showed that similar artefacts are induced on the surface of both conductors. Simulations are also performed to find the optimal design for an RLAS system, by varying the geometry of the system. A simple experimental realisation of the RLAS system was implemented to investigate the degree of artefact attenuation that can be achieved via RLAS. Through a series of experiments on phantoms and human subjects, it is shown here that RLAS significantly reduces the GA, pulse (PA) and motion (MA) artefacts, while allowing accurate recording of neuronal signals. The results indicate that RLAS generally outperforms the standard artefact correction method, average artefact subtraction (AAS), in the removal of the GA and PA when motion is present, while the combination of RLAS and AAS always produces higher artefact attenuation than AAS alone. Additionally, this work demonstrates that RLAS greatly attenuates the unpredictable and highly variable MA that are very hard to remove using post-processing methods.
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Mullinger, Karen Julia. "Simultaneous EEG and fMRI at high fields." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/14142/.

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The work described in this thesis involves an investigation of the implementation and application of simultaneous EEG and fMRI. The two techniques arc complementary, with EEG providing excellent temporal resolution and fMRI having good spatial resolution. Combined EEG/fMRI thus forms a powerful tool for neuroscience studies. In initial work, methods for improving the removal of the gradient and pulse artefacts, which are induced in EEG traces recorded during concurrent MRI, have been developed. Subsequently, the effects of the EEG hardware on MR images were investigated. This involved acquiring a series of scans to identify the sources of B0- and B1 inhomogeneities and the extent to which these affect EPI data. The adverse effects on data quality of combining EEG and fMRI increase with field strength. Consequently, EEG-fMRI at 7T is particularly challenging, although a number of advantages make its implementation desirable. Safety tests were performed which showed the presence of the EEG system caused a negligible increase in RF heating effects during scanning at 7T. After elimination of a number of noise sources, the first simultaneous EEG-fMRI experiments at 7T using commercially available equipment were performed. Concurrent EEG/fMRI at 3T was then used to investigate the correlation between the BOLD (blood oxygenation level dependent) response measured during visual stimulation and both the preceding alpha power and the strength of the driven, electrical response. In considering the correlation of the range of variation of the alpha power and BOLD response, a trend emerged which allowed tentative conclusions to be drawn. Variation of the BOLD and driven response with the frequency of visual stimulation relative to a subject's individual alpha frequency (IAF) was also investigated. A significant increase in the driven response, accompanied by a decrease in the BOLD response was observed in visual cortex when it was driven at the IAF.
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Mitchell, Alan John. "Investigating high-j single-particle energies in Z = 51 nuclei." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/investigating-highj-singleparticle-energies-in-z--51-nuclei(42930c32-33e6-4607-855b-0f319d72d4bd).html.

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The work of this thesis consists of a systematic study of low-lying, proton single-particle states in Z = 51 isotopes. States in 113−125Sb were populated via (α,t) and (3He,d) single-proton adding reactions, performed on stable even tin isotopes. The Yale tandem accelerator delivered beams of 37.5-MeV α particles and 25-MeV 3He nuclei for the reactions. Outgoing tritons and deuterons were momentum analysed using an Enge split-pole spectrometer. To obtain absolute cross sections, the product of target thickness and spectrometer aperture size was calibrated for each target, using sub-Coulomb α- particle elastic scattering. States were observed up to ∼4 MeV excitation energy. Angular momentum transfer assignments were made through comparison of angular distributions and ratios of cross sections between different reactions. Relative spectroscopic factors ex- tracted through a DWBA analysis allowed energy centroids of the observed single-particle strength to be reconstructed.These measurements build upon the results of a previous (α,t) study, which was per- formed on the same targets. The previous measurements estimated that ∼ 90% of the πg7/2 and πh11/2 strength was held in the lowest-lying 7/2+ and 11/2− states, respectively. The difference in energy of these states increased with increasing neutron excess, and al- though they were in agreement with theoretical calculations that included contributions of the tensor interaction, poor statistics limited the information obtained regarding the weak fragments of high-j single-particle strength. Careful examination of these fragments, with the use of greater statistics, has been performed in this work. The (3He,d) measurements aid in making l transfer assignments and provide complementary information regarding the low-j states.Binding energies of the πg7/2 and πh11/2 orbitals measured in this work were compared to the energies of the lowest-lying 7/2+ and 11/2− states and theoretical calculations that include the tensor interaction. Though shifted higher in energy due to the fragmentation, trends in the centroids appear to be consistent with the lowest-lying states. The trend of the πg7/2–πh11/2 energy difference is in quantitative agreement with the predicted effects of the tensor interaction, with increasing neutron excess.
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Kuhlman, Anthony Joseph Jr. "The beginning and end of heavy ion collisions: using uranium beams and Bose-Einstein correlations as probes of the collision fireball." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1185456181.

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Sharp, David Keith. "Trends in single-particle energies in N=51 nuclei." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/trends-in-singleparticle-energies-in-n51-nuclei(fe5f71e3-c0ab-4ace-98ae-af674f923b44).html.

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A systematic study of the neutron single-particle states in N=51 isotones has been performed. Final states in 89Sr, 91Zr and 93Mo have been populated using the (d,p) and (alpha,3He) single-neutron adding reactions. The Yale tandem provided beams of 15-MeV deuterons and 50-MeV alpha particles with the outgoing ejectiles momentum analysed using an Enge split-pole spectrometer. A supplementary measurement of the d(86Kr,p)87Kr reaction, at a beam energy of 10 MeV/u, was made in inverse kinematics using the HELIOS spectrometer. Outgoing protons execute a helical orbit in a uniform field before detection, before they return to axis, using a position-sensitive silicon array. Absolute cross sections were measured for states up to 4 MeV in excitation. The transferred angular momentum was identified through a comparison of angular distributions and the ratio of cross section between reactions. Relative spectroscopic factors were extracted through a DWBA analysis.The measured centroids for the single-particle energies of the s1/2, d3/2, d5/2, g7/2 and h11/2 orbitals were compared to calculations using a Gaussian central potential with and without the addition of a tensor interaction. Through this comparison it was deduced that the inclusion of a tensor interaction is required to explain the observed shifts in the single-particle energies of the d3/2 and g7/2 orbitals. This system provided an observation of a switch in behaviour, from repulsive to attractive and vice versa, of the effect of the tensor interaction. This occurs due to a change from j> to j< proton occupancy at Z=40.
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Procter, Thomas. "New techniques of laser spectroscopy on exotic isotopes of gallium and francium." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/new-techniques-of-laser-spectroscopy-on-exotic-isotopes-of-gallium-and-francium(0cdd7f18-bf5f-4f31-bea0-3b49013e00a8).html.

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The neutron-deficient gallium isotopes down to N=32 have had their hyperfine structures and isotope shifts measured via collinear laser spectroscopy using the COLLAPS (COllinear LAser sPectroScopy) beam line. The ground-state spin of 63Ga has been determined as I = 3/2 and its magnetic dipole and electric quadrupole moments were measured to be µ = +1.469(5) µN and Qs = +0.212(14) b respectively. The nuclear moments of 70Ga were measured to be µ = +0.571(2) µN and Qs = +0.105(7) b. New isotope shift results were combined with previously measured values of the neutron-rich isotopes and the changes in mean-square charge radii of the entire gallium isotope chain were investigated. Analysis of the trend in the neutron-deficient charge radii demonstrated that there is no evidence of anomalous charge radii behaviour in gallium in the region of N=32. A sudden increase of the charge radii was observed at the N=50 shell gap and an inversion of the normal odd-even staggering effect was seen at N=40.The development of the CRIS (Collinear Resonant Ionisation Spectroscopy) beam line is reported, detailing the components that have been installed since its proposal in 2008. Results from the first experimental campaign on francium are discussed to present the current operational status of CRIS. Initial results demonstrate an experimental efficiency of 1:70, collisional background rate of 1:10^5 and a resolution of 1.5 GHz. Analysis of the 221Fr data provided an experimental accuracy of measurements using CRIS, with 44 MHz for the A(7s 2S1/2) hyperfine coefficients and 360 MHz for the isotope shifts. The A(7s 2S1/2) hyperfine coefficients and isotope shifts were measured for 207,211,220,221Fr and show good agreement with literature values. The isotope shifts were combined with literature values to determine the atomic factors for the 7s 2S1/2 to 8p 2P3/2 atomic transition so that changes in the mean-square charge radii could be extracted and compared with literature. The results demonstrate the successful commissioning of the CRIS experiment.
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Black, Greg. "Irradiated graphite waste : analysis and modelling of radionuclide production with a view to long term disposal." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/irradiated-graphite-waste-analysis-and-modelling-of-radionuclide-production-with-a-view-to-long-term-disposal(9993a76a-15c6-4cbe-a4a3-4c0bc88c3134).html.

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The University of Manchester Greg BlackThesis submitted for the degree of Doctor of EngineeringIrradiated Graphite Waste: Analysis and Modelling of Radionuclide Production with a View to Long Term Disposal23rd June 2014The UK has predominantly used graphite moderator reactor designs in both its research and civil nuclear programmes. This material will become activated during operation and, once all reactors are shutdown, will represent a waste legacy of 96,000 tonnes [1]. The safe and effective management of this material will require a full understanding of the final radiological inventory. The activity is known to arise from impurities present in the graphite at start of life as well as from contamination products transported from other components in the reactor circuit. The process is further complicated by radiolytic oxidation which leads to considerable weightloss of the graphite components. A comprehensive modelling methodology has been developed and validated to estimate the activity of the principle radionuclides of concern, 3H, 14C, 36Cl and 60Co. This methodology involves the simulation of neutron flux using the reactor physics code WIMS, and radiation transport code MCBEND. Activation calculations have been performed using the neutron activation software FISPACT. The final methodology developed allows full consideration of all processes which may contribute to the final radiological inventory of the material. The final activity and production pathway of each radionuclide has been researched in depth, as well as operational parameters such as the effect of changes in flux, fuel burnup, graphite weightloss and irradiation time. Methods to experimentally determine the activity, and distribution of key radionuclides within irradiated graphite samples have been developed in this research using a combination of both gamma spectroscopy and autoradiography. This work has been externally validated and provides confidence in the accuracy of the final modelling predictions. This work has been undertaken as part of the EU FP7 EURATOM Project: CARBOWASTE, and was funded by the Office for Nuclear Regulation.
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Books on the topic "Nuclear physics. eng"

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undifferentiated, David Lindley. The end ofphysics: The myth of a unified theory. New York: BasicBooks, 1993.

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The end of physics: The myth of a unified theory. New York: BasicBooks, 1993.

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Uchū ni owari wa aru no ka?: Soryūshi ga tokiakasu uchū no rekishi = Does the universe have an end? Tōkyō: Nanooputonikusu Enajī Shuppankyoku, 2010.

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Workshop on Physics at the First Muon Collider and at the Front End of a Muon Collider (1997 Batavia, Ill.). Workshop on Physics at the First Muon Collider and at the Front End of a Muon Collider, Batavia, IL, November 1997. Edited by Geer Stephen and Raja Rajendran. Woodbury, N.Y: American Institute of Physics, 1998.

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L' heure de s'enivrer: L'univers a-t-il un sens? Paris: Seuil, 1986.

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undifferentiated, David Lindley. The End of Physics. Basic Books, 1994.

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Shen, Wei, and Benjamin Rouben. Fundamentals of CANDU Reactor Physics. ASME, 2021. http://dx.doi.org/10.1115/1.884836.

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Nuclear Engineering and Technology for the 21st Century - Monograph Series Jovica Riznic, Series Editor With more than 75 years of combined working experience in the area of reactor physics and safety, the intention of the authors of this monograph is to provide a practical book on reactor physics, particularly for the safe operation of aged CANDU reactors, with minimal mathematics or equations. The book gives a glimpse of first principles and their engineering application in reactor physics, for those who are interested in or are working in the Canadian nuclear industry. The book is also ideal as a reference for physicists, operators, regulatory staff, and for those who need to interact with reactor physicists at CANDU sites, nuclear laboratories, institutes, universities, or engineering companies. This book assumes prior knowledge of nuclear physics offered at the secondary level. As very few equations appear in the monograph, it is not considered suitable for specialists whose focus is only on calculations or on the development of software on reactor physics. Such readers should refer to the books listed in the bibliography at the end of the monograph.
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undifferentiated, David Lindley. The end of physics: The myth of a unified theory. Basic Books, 1994.

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Stuewer, Roger H. New Theories of Nuclear Reactions. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198827870.003.0013.

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Bohr, inspired by Fermi’s discovery of slow neutrons, conceived his theory of the compound nucleus by the end of 1935. He went on to speculate that if the energy of a neutron incident on a nucleus were increased to the fantastically high energy of 1000 million electron volts, the compound nucleus would explode. Using small wooden models Otto Robert Frisch had constructed, Bohr lectured widely on his theory on a trip around the world in the first half of 1937. By then, Russian-born theoretical physicist Gregory Breit and Hungarian-born theoretical physicist Eugene Wigner in Princeton had conceived their fundamentally equivalent theory of neutron+nucleus resonances. Together, their theory and Bohr’s transformed the theory of nuclear reactions. Orso Mario Corbino, Fermi’s mentor, friend, and protector, died on January 23, 1937, at age sixty. Ernest Rutherford, the greatest experimental physicist since Michael Faraday, died on October 19, 1937, at age sixty-six.
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Hig ENE Phy Pol (AIP Conference Proceedings). American Institute of Physics, 1993.

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Book chapters on the topic "Nuclear physics. eng"

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Henley, E. M., and J. P. Schiffer. "Nuclear Physics at the End of the Century." In More Things in Heaven and Earth, 345–69. New York, NY: Springer New York, 1999. http://dx.doi.org/10.1007/978-1-4612-1512-7_22.

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Costa, P., C. A. de Sousa, M. C. Ruivo, and Yu L. Kalinovsky. "Phase transitions in quark matter and behaviour of physical observables in the vicinity of the critical end point." In The IVth International Conference on Quarks and Nuclear Physics, 553–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72516-9_118.

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"Convention on the Physical Protection of Nuclear Material." In International Instruments Related to the Prevention and Suppression of International Terrorism, 60–71. UN, 2019. http://dx.doi.org/10.18356/de25ebb0-en.

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"Accounting, securing and the physical protection of nuclear materials and installations." In UNODA Occasional Papers No.11: United Nations Seminar on Implementing UN Security Council Resolution 1540 in Asia and the Pacific, October 2006, 61–75. UN, 2008. http://dx.doi.org/10.18356/da7d15e0-en.

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"Amendment to the Convention on the Physical Protection of Nuclear Material." In International Instruments Related to the Prevention and Suppression of International Terrorism, 72–81. UN, 2019. http://dx.doi.org/10.18356/29a544ac-en.

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"Accounting, securing, and the physical protection of nuclear material and installations." In UNODA Occasional Papers No.11: United Nations Seminar on Implementing UN Security Council Resolution 1540 in Asia and the Pacific, October 2006, 91–98. UN, 2008. http://dx.doi.org/10.18356/27518b8e-en.

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Garai, Jozsef. "Nuclear Lattice Model and the Electronic Configuration of the Chemical Elements." In Mendeleev to Oganesson. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190668532.003.0005.

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In the earliest days of science researchers were arguing philosophically what might be the reasonable explanation for an observed phenomenon. The majority of the contemporary scientific community claims that these arguments are useless because they do not add anything to our understanding of nature. The current consensus on the aim of science is that science collects facts (data) and discerns the order that exists between and among the various facts (e.g., Feynman 1985). According to this approach the mission of science is over when the phenomenon under investigation has been described. It is left to the philosophers to answer the question what is the governing physical process behind the observed physical phenomenon. Quantum mechanics is a good example of this approach, “It works, so we just have to accept it.” The consequence is that nearly 90 years after the development of quantum theory, there is still no consensus in the scientific community regarding the interpretation of the theory’s foundational building blocks (Schlosshauer et al. 2013). I believe that identifying the physical process governing a natural phenomenon is the responsibility of science. Dutailly (2013) expressed this quite well: A “black box” in the “cloud” which answers our questions correctly is not a scientific theory, if we have no knowledge of the basis upon which it has been designed. A scientific theory should provide a set of concepts and a formalism which can be easily and indisputably understood and used by the workers in the field. In this study the main unifying principle in chemistry, the periodic system of the chemical elements (PSCE) is investigated. The aim of the study is not only the description of the periodicity but also the understanding of the underlying physics resulting in the PSCE. By 1860 about 60 elements had been identified, and this initiated a quest to find their systematic arrangement. Based on similarities, Dobereiner (1829) in Germany suggested grouping the elements into triads.
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Fontani, Marco, Mariagrazia Costa, and Mary Virginia Orna. "The Obsession of Physicists with the Frontier: The Case of Ausonium and Hesperium, Littorium and Mussolinium." In The Lost Elements. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199383344.003.0016.

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The attempt to find the first synthetic transuranium elements occurred via investigations completely different from anything that one could imagine. They were conducted in Rome by the renowned team of “the boys of Via Panisperna,” led by the young Enrico Fermi, affectionately called “the Pope” by his colleagues because, like the Supreme Pontiff, he was considered infallible. Nevertheless, this presumed infallibility in every area of the experimental sciences ought not stray into radiochemistry. Such hubris led to a spot on an otherwise splendid record: a clumsy interpretation of data that led to the doubtful attribution of the discovery of two transuranium elements. The hasty attempt to first name, and then retract, the two radioelements, would tarnish the prestigious and somewhat controversial figure of Enrico Fermi. On the other hand, this nonexistent discovery also sped the Roman professor to Stockholm, to receive the 1938 Nobel prize in physics. On March 25, 1934, Enrico Fermi announced the observation of neutron-induced radiation in samples of aluminum and fluorine. This brilliant experiment was the culmination of preceding discoveries: that of the neutron and that of artificial radioactivity (produced by means of α particles, deuterons, and protons). The following October, a second and crucial discovery was announced: the braking effect of hydrogenous substances on the radioactivity induced by neutrons, the first step toward the utilization of nuclear energy. The year 1934, thanks to Fermi’s research, was one of great expectations for the rebirth of Italian physics, an area that for centuries had remained in the backwater compared to the United States and the great countries of Europe. At the beginning of the 1930s, the members of Fermi’s team had explained the theory of. decay and, after 1934, with their induced radioactivity experiments, had also laid down the guidelines for research on the physics of neutrons. Rome became a reference point for nuclear research on the international level. The project of the director of the Rome Physics Institute, Senator Orso Mario Corbino (1876–1937), was nearly accomplished, a project that, from the end of the 1920s, Corbino had believed in and had not spared any expense to realize, investing all of his resources in the youthful Fermi, who was called to occupy the first chair in theoretical physics in Italy, created especially for him, when he was only 25 years of age.
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Bisarya, Kamal, and Tania Cubison. "Military burns." In Burns (OSH Surgery), 339–46. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780199699537.003.0040.

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Military burns can be accidental or due to combat and are generated by a wide variety of mechanisms including explosives (main), incendiary, chemical and nuclear weapons. Explosives give rise to a blast wave or a blast wind which cause primary (eg. barotrauma) to quaternary (eg. burn) effects on multiple organs. Blast injury secondary effects (penetrating injuries) are the leading cause of death in military attacks. Infection associated mortality occurs at higher rates in combat burns. Polytrauma management follows ATLS/EMSB guidelines. Outcomes are similar to civilians but can lead to long term physical and psychological morbidity. Prevention is via pre-deployment education and protective equipment.
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Riès-Kautt, M., and A. Ducruix. "From Solution to Crystals With a Physico-Chemical Aspect." In Crystallization of Nucleic Acids and Proteins. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780199636792.003.0014.

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Biological macromolecules follow the same thermodynamic rules as inorganic or organic small molecules concerning supersaturation, nucleation, and crystal growth (1). Nevertheless macromolecules present particularities, because the intramolecular interactions responsible of their tertiary structure, the intermolecular interactions involved in the crystal contacts, and the interactions necessary to solubilize them in a solvent are similar. Therefore these different interactions may become competitive with each other. In addition, the biological properties of biological macromolecules may be conserved although the physico-chemical properties, such as the net charge, may change depending on the crystallization conditions (pH, ionic strength, etc.). A charged biological macromolecule requires counterions to maintain the electroneutrality of the solution; therefore it should be considered as a protein (or nucleic acid) salt with its own physico-chemical properties, depending on the nature of the counterions. To crystallize a biological macromolecule, its solution must have reached supersaturation which is the driving force for crystal growth. The understanding of the influence of the crystallization parameters on protein solubility of model proteins is necessary to guide the preparation of crystals of new proteins and their manipulation. Only the practical issues are developed in this chapter, and the reader should refer to recent reviews (2-4) for a description of the fundamental physical chemistry underlying crystallogenesis. The solubilization of a solute (e.g. a biological macromolecule) in an efficient solvent requires solvent-solute interactions, which must be similar to the solvent-solvent interactions and to the solute-solute interactions of the compound to be dissolved. All of the compounds of a protein solution (protein, water, buffer, crystallizing agents, and others) interact with each other via various, often weak, types of interactions: monopole-monopole, monopole-dipole, dipole-dipole, Van der Waals hydrophobic interactions, and hydrogen bonds. Solubility is defined as the amount of solute dissolved in a solution in equilibrium with its crystal form at a given temperature. For example, crystalline ammonium sulfate dissolves at 25°C until its concentration reaches 4.1 moles per litre of water, the excess remaining non-dissolved. More salt can be dissolved when raising the temperature, but if the temperature is brought back to 25°C, the solution becomes supersaturated, and the excess of salt crystallizes until its concentration reaches again its solubility value at 25°C (4.1 moles per litre of water).
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Conference papers on the topic "Nuclear physics. eng"

1

Harakeh, Muhsin N. "Strategic Plan for Nuclear Physics Research in Europe." In EXOTIC NUCLEAR SYSTEMS: International Symposium on Exotic Nuclear Systems ENS'05. AIP, 2005. http://dx.doi.org/10.1063/1.2140616.

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Huang, Mei, Akira Ozawa, and Weiping Lu. "Locating the QCD critical end point by the ratio of bulk viscosity over entropy density." In NUCLEAR PHYSICS TRENDS: 7th Japan-China Joint Nuclear Physics Symposium. AIP, 2010. http://dx.doi.org/10.1063/1.3442589.

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Flocard, Hubert C. "Basic nuclear research involvement in the french research program on the back-end of the nuclear fuel cycle." In Tours symposium on nuclear physics IV. AIP, 2001. http://dx.doi.org/10.1063/1.1372801.

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Alvim, Antonio Carlos Marques, Fernando Carvalho da Silva, and Aquilino Senra Martinez. "Depletion Calculation for a Nodal Reactor Physics Code." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-30310.

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This paper deals with an alternative numerical method for calculating depletion and production chains of the main isotopes found in a pressurized water reactor. It is based on the use of the exponentiation procedure coupled to orthogonal polynomial expansion to compute the transition matrix associated with the solution of the differential equations describing isotope concentrations in the nuclear reactor. Actually, the method was implemented in an automated nuclear reactor core design system that uses a quick and accurate 3D nodal method, the Nodal Expansion Method (NEM), aiming at solving the diffusion equation describing the spatial neutron distribution in the reactor. This computational system, besides solving the diffusion equation, also solves the depletion equations governing the gradual changes in material compositions of the core due to fuel depletion. The depletion calculation is the most time-consuming aspect of the nuclear reactor design code, and has to be done in a very precise way in order to obtain a correct evaluation of the economic performance of the nuclear reactor. In this sense, the proposed method was applied to estimate the critical boron concentration at the end of the cycle. Results were compared to measured values and confirm the effectiveness of the method for practical purposes.
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Quattrocchi, Lucia. "The FARCOS project. First characterization of detectors and front end electronics of FARCOS array." In 52 International Winter Meeting on Nuclear Physics. Trieste, Italy: Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.212.0063.

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Druillole, F. "Methodology to measure a front end ASIC for physic experiment." In 2003 IEEE Nuclear Science Symposium. Conference Record (IEEE Cat. No.03CH37515). IEEE, 2003. http://dx.doi.org/10.1109/nssmic.2003.1351904.

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Vasquez, J., A. Andrighetto, L. Costa, G. Bassato, and M. Giacchini. "Off-line front-end safety control system for the SPES project at the LNL." In IX LATIN AMERICAN SYMPOSIUM ON NUCLEAR PHYSICS AND APPLICATIONS. AIP, 2012. http://dx.doi.org/10.1063/1.3688850.

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Barton, Paul, Paul Luke, Mark Amman, Yuen-Dat Chan, Jason Detwiler, James Loach, Ryan Martin, Alan Poon, Craig Tindall, and Kai Vetter. "Low-noise low-mass front end electronics for low-background physics experiments using germanium detectors." In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (2011 NSS/MIC). IEEE, 2011. http://dx.doi.org/10.1109/nssmic.2011.6154397.

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Keating, Brian G., and Marvin L. Marshak. "Going to the End of the Earth to Observe the Beginning of Time with BICEP." In 10TH CONFERENCE ON THE INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS. AIP, 2009. http://dx.doi.org/10.1063/1.3293783.

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Pollman, Anthony G., and Anthony J. Gannon. "Multi-Physics Energy Approach and Demonstration Facility." In ASME 2015 9th International Conference on Energy Sustainability collocated with the ASME 2015 Power Conference, the ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2015 Nuclear Forum. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/es2015-49084.

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A methodology to investigate the generation, transport and storage of energy based on a multi-physics approach, tied to the end use application, is presented. Often little or no consideration is given to the end use or desired product of the energy used. Current energy generation, transport and storage are dominated heavily by a few large sectors, notably electricity and hydrocarbons. These are very effective and practical systems that facilitate the delivery of vast amounts of energy. It is then not surprising that most strategies for renewable energy generation and storage revolve around this centralized model in some way. In larger scale generation, power is usually fed onto the electrical grid with a current challenge being grid stabilization with increasing penetration of intermittent renewable resources. In small grid-independent system a mix of battery and hydrocarbon storage are often used to keep a micro-grid available for various end use applications. A paradigm shift in the thinking and design of energy systems based on the required end use or product is needed. The philosophy and motivation that lead to the consideration of this new approach are outlined in this article. Following this a summary of a methodical approach to developing the most energy and cost-effective solution to general processes by considering their end-use physics is presented. Examples of innovative energy generation, storage, and transport solutions based on the multi-physics approach are then outlined. Finally, a brief description of the Multi-physics Renewable Energy Lab (MPREL), a demonstration facility based on the approach and currently under construction at the Naval Postgraduate School, is given.
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Reports on the topic "Nuclear physics. eng"

1

Matthews, W. Internet end-to-end performance monitoring for the High Energy Nuclear and Particle Physics community. Office of Scientific and Technical Information (OSTI), February 2000. http://dx.doi.org/10.2172/753304.

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