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Dissertations / Theses on the topic 'Irradiation devices'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Hang, Shuojin. "Irradiation-based defect engineering of graphene devices." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/388184/.

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The addition of structural defects modifies the intrinsic properties of graphene–the two dimensional allotrope of carbon. The controlled introduction of such defects is therefore desired to realise specific functions. For instance, the grain boundaries formed between epitaxial grown graphene domains has been observed to mimic a metallic wire. By contrast, the presence of point defects in a graphene channel affects the carrier transport significantly in a manner such as the Fermi-level pinning, transport-gap widening and Anderson localization. Incorporating these defects into conventional devic

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2

Pang, Bo. "Femtosecond laser irradiation of polymers for sensors and devices." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/femtosecond-laser-irradiation-of-polymers-for-sensors-and-devices(315aacde-7df2-416e-bc1a-17db5cb42577).html.

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3

Booij, Wilfred Edwin. "Josephson junctions and devices fabricated by focused electron beam irradiation." Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/104786.

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The irradiation of high Tc superconducting thin films with a focused electron beam, such as that obtained in a scanning transmission electron microscope (STEM), can result in the formation of a Josephson junction. The conditions required for the formation of these Josephson junctions in YBa2Cu3O7-d and related compounds are discussed as well as the physical properties of the irradiated material. From electrical transport measurements of individual Josephson junctions it was found that these junctions have a Superconductor/Normal/Superconductor (SNS) nature. Low temperature anneal studies indic

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4

GHOBRIL, CARLOS N. "Gestão tecnológica para instalação de um irradiador de alimentos no Vale do Ribeira." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11676.

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5

Syahriar, Ary. "Passive integrated optical devices formed by electron beam irradiation of silica-on-silicon layers." Thesis, Imperial College London, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481291.

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6

CALVO, WILSON A. P. "Desenvolvimento do sistema de irradiação em um irradiador multipropósito de cobalto-60 tipo compacto." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11357.

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7

Norton, John P. "Studies on irradiation effects of silicon-on-sapphire devices and proton beam divergence through printed circuit boards." Ann Arbor, Mich. : ProQuest, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1456445.

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Thesis (M.S. in Physics)--S.M.U.<br>Title from PDF title page (viewed Mar. 16, 2009). Source: Masters Abstracts International, Volume: 47-01, page: 0393. Adviser: Jingbo Ye. Includes bibliographical references.

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8

Kasaei, Leila. "Modification of Iron pnictide and MgB2 thin films using focused He+ ion beam irradiation for superconducting devices." Diss., Temple University Libraries, 2019. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/585476.

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Physics<br>Ph.D.<br>Continued pursuit of better superconducting devices and an understanding of how the focused ion beam evolves in a complex material are the primary motivations behind this work. The materials of interest are MgB2 and Co-doped Ba122. Superconducting properties of MgB2 were discovered in 2001. It is the first superconductor recognized as a multigap superconductor. Owing to its high Tc of ~39K, electronic circuits based on this material are expected to operate at a much higher temperature (~25 K) than low-temperature superconductors, using compact cryocoolers. Co-doped Ba122 is

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9

RODRIGUES, JUNIOR ARY de A. "Vidro comercial como detector e medidor de radiacao num irradiador de grande porte." reponame:Repositório Institucional do IPEN, 2000. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10802.

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RODRIGUES, JUNIOR ARY de A. "Câmara de ionização aplicada a medidas de altas taxas de dose." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11352.

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RELA, PAULO R. "Desenvolvimento de dispositivo de irradiacao para tratamento de efluentes industriais com feixe de eletrons." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11050.

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OMI, NELSON M. "Desenvolvimento de irradiador gama dedicado ao beneficiamento de pedras preciosas." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11473.

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HERNANDES, ANTONIO C. "Caracterizacao do campo de radiacao numa instalacao para pesquisa em BNCT utilizando o metodo de Monte Carlo codigo MCNP-4B." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10997.

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Detwiler, Jordyn A. "Dosimetric Evaluation of Three Partial Breast Irradiation Devices and the Dosimetric Effect of Tissue Thickness Surrounding a Multi-Lumen Partial Breast Applicator." University of Toledo Health Science Campus / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=mco1286688741.

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15

LINS, Ciele Ribeiro. "Estudo da fotodegradação do dímero Ln2MTB Ln2MTB=Ln2(4MeSBz)6(DMSO)2(H2O)2." Universidade Federal de Pernambuco, 2014. https://repositorio.ufpe.br/handle/123456789/18301.

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MATSUDA, HYLTON. "Monitoracao do feixe externo do ciclotron cyclone 30 do IPEN-CNEN/SP." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10995.

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17

UZUELI, DANIEL H. "Estudo sobre o gás ozônio formado no processo de irradiação industrial com cobalto-60 e seu impacto no meio ambiente." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10577.

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LIMA, RUY B. de. "Avaliacao experimental do fluxo de neutrons de um irradiador com fontes de AmBe e sua possibilidade de uso em analise de materiais." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11127.

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19

ARAUJO, SUMAIR G. de. "Projeto e implantacao de automacao em sistemas de irradiacao de alvos solidos, liquidos e gasosos em ciclotrons visando a producao de radioisotopos." reponame:Repositório Institucional do IPEN, 2001. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10921.

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NASCIMENTO, FERNANDO C. "Tratamento de efluentes da produção de tintas industriais, automotivas e de repintura por irradiação com feixe de elétrons." reponame:Repositório Institucional do IPEN, 2013. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10571.

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DOMINGOS, DOUGLAS B. "Calculos neutronicos, termo-hidrulicos e de seguranca de um dispositivo para irradiacao de miniplacas (DIM) de elementos combustiveis tipo dispersao." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9510.

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22

Hodgson, Andrew Phillip James. "Evaluating the irradiation and processing history of potential radiological device materials." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/44999.

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Cobalt-60 and iridium-192 sources are both generated in nuclear reactors through the irradiation of stable target materials. Variation in: neutron energy, flux and irradiation time; target material characteristics and purity; the activation cross sections of the desired neutron reactions; decay and daughter progeny in-growth; and any post-irradiation processing, can all play a key part in determining the isotopic and chemical composition of the material produced. These isotopic ratios, together with any activated elemental impurities, could potentially be used as signatures in order to provide

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23

White, Todd A. "A Novel Device for Delivering Combined Partial Breast Irradiation and Partial Breast Hyperthermia." University of Toledo Health Science Campus / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=mco1331580258.

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24

Chrifi, Alaoui Meriem. "High Frequency Ultrasonic Device development for Non-Destructive Post-Irradiation Examination of the RHF Fuel Element." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS055/document.

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Les prochaines plaques combustibles faiblement enrichies des réacteurs HPRR devront résister à de hautes radiations et dévoileront probablement un gonflement. Ce dernier modifie la structure et influence la distance inter-plaque nominale. La mesure de cette distance à l'ordre micrométrique constitue l'objectif du projet PERSEUS via le développement d'un dispositif ultrasonore non-destructif. Réduit à 1 mm pour s'insérer dans l'interstice inter-plaque de 1.8 mm du Réacteur à Haut Flux (RHF), le dispositif comprend deux transducteurs ultrasonores reliés à un système électronique. Il permet les m

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25

White, Brad Derek. "Cathodoluminescence spectroscopy studies of aluminum gallium nitride and silicon device structures as a function of irradiation and processing." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1141325302.

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26

Katz, Evan Jarrod. "Spectroscopic and Electrical Characterization of SiO_x and GaN Device Structures as a Function of Irradiation." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1365770655.

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27

White, Brad D. "Cathodoluminescence spectroscopy studies of aluminum gallium nitride and silicon device structures as a function of irradiation and processing." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1141325302.

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28

Hirashima, Hideaki. "Establishment of machine and patient-specific quality assurance methods for advanced volumetric modulated arc therapy." Kyoto University, 2019. http://hdl.handle.net/2433/242352.

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29

Gao, Hantian. "Nanoscale Characterization and Control of Native Point Defects in Metal Oxide Semiconductors and Device Structures." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618838504594148.

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30

Lamotte, Maxime. "Etude du signal optique des chambres à fission et évaluation de son exploitation pour un système de mesure neutronique d'un réacteur de génération IV Development and first use of an experimental device for fission-induced spectrometry applied to neutron flux monitoring SCENA: A simulation tool for radiation-induced gas scintillation Simulation of heavy-ion slowing-down tracks with the SCENA code Design and irradiation test of an innovative optical ionization chamber technology Pulse-reactor core monitoring with an innovative optical neutron detector." Thesis, Université Grenoble Alpes, 2021. http://www.theses.fr/2021GRALI023.

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Cette thèse de doctorat expose l'étude la luminescence induite dans des capteurs à gaz de type chambre à fission, afin d'évaluer son utilisation pour le suivi de puissance des réacteurs nucléaires de quatrième génération comme ASTRID.Le dépôt d'énergie dans un gaz par des ions lourds produits lors de fissions nucléaires dans une chambre à fission est d'ordinaire exploité pour sa capacité à produire des charges libres, qui peuvent être détectées avec des électrodes. Cette méthode, utilisée depuis le début de l'ère atomique, n'est pas sans inconvénients, et des axes d'amélioration ont été claire

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31

Ryan, Kevin Christopher Judge. "Bioaerosol inactivation using ultraviolet germicidal irradiation in flow-through control devices." Thesis, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1464530.

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Smith, Mark Anthony 1956. "Evaluation of potential induced activity in medical devices sterilized with electron beam irradiation as a function of maximum electron energy." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-12-2330.

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Commercial sterilization of medical devices may be performed using electron beam irradiators, which operate at various electron energies. The potential for activating components of the devices has been discussed, with current standards stating that an electron energy greater than 10 MeV requires assessment of potential induced radioactivity. There does not appear to be a literature citation for this energy limit, but it is the accepted default assumption within the industry. This research was directed at evaluating potential activation in medical products sterilized in electron beam as a fu

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33

Chang, Wen-Hao, and 張文浩. "Comparison of Three Different Measuring of Offset Devices for Sun-Tracking and Measurement of Direct Normal Irradiation with PSD." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/71401044760932758471.

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碩士<br>國立中央大學<br>能源工程研究所<br>103<br>In this study, through a long-term outdoor test comparison of three different measuring of offset devices for sun-tracking, including PSD (position sensitive device), CCD (charge-coupled diode) and webcam, the results show a clear day, the amount of the deviation angle of three instruments are measured at approximately 0.2o-0.3o around, but in cloudy, the three instruments will be a slight difference, this time the PSD will be significantly less than the average deviation angle CCD and webcam, but this does not mean that the PSD measurement instrument to the a

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Bi, Ruoming. "Custom Device for Low-Dose Gamma Irradiation of Biological Samples." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10434.

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When astronauts travel in space, their primary health hazards are high-energy cosmic radiations from galactic cosmic rays (GCR). Most galactic cosmic rays have energies between 100 MeV and 10 GeV. For occupants inside of a space shuttle, the structural material is efficient to absorb most of the cosmic-ray energy and reduce the interior dose rate to below 1.2 mGy per day. However, the biological effects of prolonged exposure to low-dose radiation are not well understood. The purpose of this research was to examine the feasibility of constructing a low-dose irradiation facility to simulate the

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Teng-Hua, Yu, and 游騰華. "High energy proton irradiation effect of InAs/GaAs multilayers quantum-dot structure based device." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/30665351605655635294.

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碩士<br>國防大學中正理工學院<br>電子工程研究所<br>94<br>The research in this thesis focuses on the high energy proton irradiation effect of InAs/GaAs multilayers quantum-dot wafer and photodetector. With high energy proton path simulation, the releases of proton energy and trap distribution in quantum dot multilayers can be predicted. From the results derived by path simulation with 1, 3, and 4 MeV proton, all the protons almost penetrate the multilayers of quantum-dot structures and stop deeply in GaAs substrate. InAs Quantum Dot multilayer structures/Infrared photodetector have been irradiated by protons with

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Gan, Kai-Rong, and 甘鎧榕. "Development and Implement of Porous Thin-film Device Technique for Gas Detection Using Picosecond Laser Irradiation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/59j23f.

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Chen, Wen-Yi, and 陳文乙. "Study of Graphene Thin-Film-Based Device for Polymerase Chain Reaction Using Ultra-Violet Ultra-Short Pulsed Laser Irradiation." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/36243060222170529142.

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碩士<br>國立臺灣師範大學<br>機電工程學系<br>104<br>In this study, the graphene-based micro-heater can be fabricated by the advanced laser micromachining and spinning-coating techniques for thin-film device. Based on electrical and thermal characteristics of graphene-based device, the control program and circuit design for developing polymerase chain reaction (PCR) chip can be performed to deoxyribonucleic acid(DNA) amplification. The results of this study found that the length of the shorter micro-heater and the width of wider graphene-based electrode channel where the heating characteristics indicate their

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Mathevula, Langutani Eulenda. "Deep space radiations-like effects on VO2 smart nano-coatings for heat management in small satelittes." Diss., 2014. http://hdl.handle.net/10500/18408.

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Thermal control in spacecraft will be increasingly important as the spacecraft grows smaller and more compact. Such spacecraft with low thermal mass will have to be designed to retain or reject heat more efficiently. The passive smart radiation device (SRD) is a new type of thermal control material for spacecraft. Current space thermal control systems require heaters with an additional power penalty to maintain spacecraft temperatures during cold swings. Because its emissivity can be changed without electrical instruments or mechanical part, the use of SRD decreases the request of spacecraft p

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