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Dissertations / Theses on the topic 'Lasar'

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Published: 4 June 2021
Last updated: 26 July 2025

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1

Rezende, Olga Scartezini de. "Diálogos culturais: Heitor dos Prazeres e Lasar Segall." Universidade Presbiteriana Mackenzie, 2018. http://tede.mackenzie.br/jspui/handle/tede/3475.

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Submitted by Eliana Barboza (eliana.silva1@mackenzie.br) on 2018-03-08T14:41:34Z No. of bitstreams: 2 Olga Scartezini de Rezende.pdf: 13569514 bytes, checksum: 76c88e28bb20c2a8a59bc84412c8b6c1 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Paola Damato (repositorio@mackenzie.br) on 2018-03-20T15:07:25Z (GMT) No. of bitstreams: 2 Olga Scartezini de Rezende.pdf: 13569514 bytes, checksum: 76c88e28bb20c2a8a59bc84412c8b6c1 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Made available in DSpace on 20
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Cardoso, Juliana Vilar Rodrigues. "Uma criatura dócil, de Dostoiévski: a leitura de Lasar Segall." Universidade Presbiteriana Mackenzie, 2012. http://tede.mackenzie.br/jspui/handle/tede/2161.

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Made available in DSpace on 2016-03-15T19:45:41Z (GMT). No. of bitstreams: 1 Juliana Vilar Rodrigues Cardoso.pdf: 3687764 bytes, checksum: bc551d05b01bc005918918610d65d400 (MD5) Previous issue date: 2012-08-15<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The relationship between literature and the visual arts is very old and can be found in recreations such as the images made by Delacroix for Goethe s Faust and by Flaxman for Dante s The Divine Comedy. Lasar Segall s lithographs inspired by the short story A gentle creature, by Fyodor Dostoevsky, show that this relations
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Agostinho, Júlia Marino. "Navio de emigrantes de Lasar Segall: uma visão da arte dentro da diáspora." Pontifícia Universidade Católica de São Paulo, 2011. https://tede2.pucsp.br/handle/handle/12656.

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Made available in DSpace on 2016-04-27T19:30:14Z (GMT). No. of bitstreams: 1 Julia Marino Agostinho.pdf: 7472623 bytes, checksum: db6532dcc303850a67815584fd1bce39 (MD5) Previous issue date: 2011-05-06<br>The objective of this essay is to understand the social-historical aspect of the work of art Navio de Emigrantes [Ship of Emigrants] by Lasar Segall, an artist born in Vilnius, Lithuania, naturalized Brazilian citizen. The work of art, besides showing its power, as it is impossible to determine an artistic line due to its being always contemporaneous, allow us a visual and material contact
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4

Lasar, Christian [Verfasser], Thorsten [Akademischer Betreuer] Klüner, and Martin [Akademischer Betreuer] Holthaus. "Explicitly correlated orbital optimized contracted pair correlation methods / Christian Lasar ; Thorsten Klüner, Martin Holthaus." Oldenburg : BIS der Universität Oldenburg, 2018. http://d-nb.info/1161845631/34.

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5

Bethge, Mareike Katja [Verfasser], Martin [Gutachter] Brüne, and Michael [Gutachter] Lasar. "Soziale Kognition bei Zwangsstörungen / Mareike Katja Bethge ; Gutachter: Martin Brüne, Michael Lasar ; Medizinische Fakultät." Bochum : Ruhr-Universität Bochum, 2018. http://d-nb.info/1167505093/34.

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6

Lima, Paulo José Nascimento. "Plano museológico: questões e proposições a partir do estudo de caso do Museu Lasar Segall." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/103/103131/tde-09022015-111246/.

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O presente trabalho tem o intento de apresentar questões e proposições na construção de planos museológicos a partir das experiências do Museu Lasar Segall (MLS). No primeiro capítulo é apresentado o histórico do MLS, enfocando seu perfil museológico (escolhas conceituais) e suas práticas de gestão, assim como um paralelo de suas experiências com o pensamento museológico contemporâneo, e ainda um breve panorama com trabalhos acadêmicos que já foram realizados tendo o MLS como objeto. No segundo capítulo é descrito e apresentado o resultado do diagnóstico museológico que buscou mapear as funçõe
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7

Sela, Svea Mareike [Verfasser], Boris [Gutachter] Schiffer, and Michael [Gutachter] Lasar. "Zwangsbehandlung bei schizophrenen Patienten im hessischen Maßregelvollzug / Svea Mareike Sela ; Gutachter: Boris Schiffer, Michael Lasar ; Medizinische Fakultät." Bochum : Ruhr-Universität Bochum, 2021. http://d-nb.info/123834657X/34.

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8

Lasar, David Verfasser], Angelika [Akademischer Betreuer] [Schnieke, and Martin [Akademischer Betreuer] Klingenspor. "The developmental role of brown adipose tissue and brown-like adipocytes (brite) in murine neonates / David Lasar. Gutachter: Angelika Schnieke ; Martin Klingenspor. Betreuer: Martin Klingenspor." München : Universitätsbibliothek der TU München, 2014. http://d-nb.info/105947722X/34.

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9

Reis, Magali dos. "A imagem e semelhança : um estudo sobre a imagem da criança nas pinturas de Eliseu Visconti, Vicente do Rego Monteiro, Tarsila do Amaral e Lasar Segall." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/252136.

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Orientador: Elisa Angotti Kossovitch<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Educação<br>Made available in DSpace on 2018-08-09T10:41:24Z (GMT). No. of bitstreams: 1 Reis_Magalidos_D.pdf: 9259963 bytes, checksum: 96abba94516a8bc653f74a60cdc42898 (MD5) Previous issue date: 2007<br>Resumo: O estudo analisa a imagem da criança nas pinturas de Eliseu Visconti, Vicente do Rego Monteiro, Tarsila do Amaral e Lasar Segall. Compreende o período de 1890-1940 (aproximadamente), cujo eixo de problematização está na emergência de um movimento político, artístico e cultural.
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10

Hilaire, Pierre. "Improved laser vibration ladar." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1998. http://handle.dtic.mil/100.2/ADA359857.

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Thesis (M.S. in Applied Physics) Naval Postgraduate School, December 1998.<br>"December 1998." Thesis advisor(s): Robert C. Harney, Donald L. Walters. Includes bibliographical references (p. 43). Also available online.
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11

Tekelu, Geberetsadike Tegenne. "Modelling reactive transport of acid mine drainage in groundwater : Effect of geochemical processes spatially variable flow source location and distribution." Thesis, KTH, Industriell ekologi, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32579.

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Impacts from mining waste deposits on groundwater resources have been recognized invarious parts of the world; though varied in scale depending on the composition of mineralsbeing mined, the level of technology employed and environmental commitment of thedevelopers. Mining activities usually involve milling, concentrating, and processing of oreswhich will result in a huge amount of waste, called tailings, usually deposited inimpoundments as a slurry, composed of fine grained geological material (uneconomicalminerals), chemicals utilized in the processs, and water. Oxidation of these deposits,
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12

Dulgergil, Ebru. "Development Of A Pulsed Fiber Laser For Ladar System." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614635/index.pdf.

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In recent years laser technology has increasingly developed with the use of fiber lasers and this has provided the possibility to implement different techniques in the defense industry. LADAR is at the forefront of these techniques. Fiber lasers constitute a perfect source for LADAR systems due to their excellent robustness, compact size and high-power generation capability. In this study we will explore the development of a pulsed fiber laser source for a LADAR system that can obtain high resolution 3D images in eye-safe region. A high power, all fiber integrated erbium system with strictly s
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13

Dunmeyer, David Richard 1978. "Laser speckle modeling for three-dimensional metrology and LADAR." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/16763.

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Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.<br>Includes bibliographical references (leaves 103-111).<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>In this thesis, I developed three-dimensional laser-speckle models to help in the development process of three-dimensional optical-metrology imaging systems. These models were developed to aid in the proof of concept for various three-dimensional metrology techniqu
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14

Blanquer, Eric. "LADAR Proximity Fuze - System Study -." Thesis, KTH, Reglerteknik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-106247.

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LADAR (Laser Detection and Ranging) systems constitue a direct extension of the conventional radar techniques. Because they operate at much shorter wavelengths, LADARs have the unique capability to generate 3D images of objects. These laser systems have many applications in both the civilian and the defence fields concerning target detection and identification. The extraction of these features depends on the processing algorithms, target properties and 3D images quality. In order to support future LADAR hardware device developments and system engineering studies, it is necessary to understand
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15

García, Vizcaino David. "Sistema láser de medida de velocidad por efecto doppler de bajo coste para aplicaciones industriales e hidrodinámicas." Doctoral thesis, Universitat Politècnica de Catalunya, 2005. http://hdl.handle.net/10803/6892.

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La utilización práctica del efecto Doppler en la emisión láser fue propuesta desde los inicios del desarrollo de los láseres en los años sesenta. Sólo en los años ochenta la investigación realizada pudo salir del laboratorio y dar lugar a la fabricación de aparatos de medida de velocidad comerciales. A partir de los noventa estos aparatos se popularizaron rápidamente. Actualmente se utilizan medidores de velocidad láser por efecto Doppler en múltiples aplicaciones, entre las que sobresale la medida de velocidad de fluidos, para estudios aéreo e hidrodinámicos. Sus características únicas, como
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16

Fabre, Grégory. "Influence des propriétés optiques et de l'endommagement de barrières thermiques EB-PVD pour la mesure d'adhérence par choc laser LASAT-2D." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2013. http://pastel.archives-ouvertes.fr/pastel-00963742.

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Les barrières thermiques avec zircone EB-PVD pour les turbines aéronautiques sont soumises à des conditions extrêmes qui conduisent à l'écaillage du dépôt. La prévention de leur endommagement est donc nécessaire pour assurer l'intégrité des pièces. Afin de comprendre et de reproduire leur évolution dans une turbine, les barrières thermiques actuelles sont soumises à des essais longs de cyclage thermique. L'essai LASAT est un essai d'adhérence rapide à mettre en oeuvre qui se place en complément du cyclage thermique. L'impulsion laser appliquée sur la face nue de l'AM1 génère une onde de choc d
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17

Sagnard, Maxime. "Detection of Weak Bonds in Bond ed CFRP Assemblies using Symmetrical LAser Shock Adhesion Test (S-LASAT)." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0022.

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L’une des grandes problématiques actuelles des secteurs aéronautique et spatial est la réduction du taux d’émission de CO2. Une des solutions est l’allègement et l’optimisation des structures. Dans cette optique, certains avions comme l’a380 ou l’a350 XWB ont été fabriqués en grande partie à l’aide de matériaux composites. Plus résistants et plus légers, ils permettent un gain de poids important comparés aux matériaux métalliques. Cependant, ces pièces composites sont encore assemblées à l’aide de rivets ou de boulons. Ces procédés non adaptés aux matériaux composites limitent le gain de poids
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18

Cruz, Livia Lara da. "Magistério e cultura: a formação cultural dos professores e sua percepção das potencialidades educativas dos museus de arte." Pontifícia Universidade Católica de São Paulo, 2008. https://tede2.pucsp.br/handle/handle/10688.

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Made available in DSpace on 2016-04-27T16:33:42Z (GMT). No. of bitstreams: 1 Livia Lara da Cruz.pdf: 585126 bytes, checksum: 1a0f6d82841535c71b036f9100ceb7e0 (MD5) Previous issue date: 2008-09-09<br>Secretaria da Educação do Estado de São Paulo<br>This report of research has the objective of presenting an analysis of the collected data for the realization of a study that pretends to analyze the existent relations between the cultural formation of the basic school and high school teachers, that work at the public education system of São Paulo, and their perceptions of the art museums educatio
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19

Lazar, Mihai Bogdan Chante Jean-Pierre Raynaud Christophe. "Etude du dopage par implantation ionique d'aluminium dans le carbure de silicium pour la réalisation de composants de puissance." [S.l.] : [s.n.], 2002. http://csidoc.insa-lyon.fr/these/2001/lazar/index.html.

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20

Arrigoni, Michel. "ETUDE DE L'INFLUENCE DES RUGOSITES D'INTERFACE, DE POROSITES ET DE L'EPAISSEUR D'ECHANTILLON SUR LA PROPAGATION DES CHOCS LASER DANS DES SYSTEMES REVETUS. APPLICATION AU PROCEDE LASAT (LASER ADHÉRENCE TEST)." Phd thesis, Université de Poitiers, 2004. http://tel.archives-ouvertes.fr/tel-00376349.

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Un nombre croissant d'applications font intervenir des systèmes revêtus. Ainsi, le développement des techniques de dépôt et des essais d'adhérence prennent de l'ampleur. Le projet LASAT (LASer Adhérence Test) propose un essai sans contact basé sur le choc laser, automatisable pouvant être intégré dans un environnement industriel. Cette technique repose sur la génération de traction à l'interface suite à la propagation d'un choc dans une cible substrat/dépôt. Afin d'intégrer la réalité industrielle de fabrication des échantillons, cette étude montre l'influence de la rugosité d'interface et de
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21

Arrigoni, Michel. "Étude de l'influence des rugosités d'interface, de porosités et de l'épaisseur d'échantillon sur la propagation des chocs laser dans des systèmes revêtus : application au procédé LASAT (LASer Adhérence Test)." Poitiers, 2004. http://www.theses.fr/2004POIT2328.

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Un nombre croissant d'applications font intervenir des systèmes revêtus. Ainsi, le développement des techniques de dépôt et des essais d'adhérence prennent de l'ampleur. Le projet LASAT (LASer Adhérence Test) propose un essai sans contact basé sur le choc laser, automatisable pouvant être intégré dans un environnement industriel. Cette technique repose sur la génération de traction à l'interface suite à la propagation d'un choc dans une cible substrat/dépôt. Afin d'intégrer la réalité industrielle de fabrication des échantillons, cette étude montre l'influence de la rugosité d'interface et de
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22

Barradas, Sophie. "Etude, à l'aide du choc laser, des mécanismes d'adhérence aux interfaces cuivre/aluminium et cuivre/cuivre obtenues par projection thermique." Phd thesis, École Nationale Supérieure des Mines de Paris, 2004. http://tel.archives-ouvertes.fr/tel-00273506.

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La réalisation de revêtements projetés de haute qualité passe par une bonne cohésion du dépôt et une adhérence élevée des revêtements sur leur substrat. Du fait de leur mode d'élaboration, les microstructures des interfaces dépôt/substrat et particule/particule obtenues par projection thermique sont complexes et les propriétés en dépendant hétérogènes. Afin d'optimiser l'adhérence des revêtements, il est nécessaire d'établir des relations entre microstructure et résistance de ces interfaces. C'est l'objet de cette étude. Le système modèle cuivre projeté sur aluminium a été retenu non seulement
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23

Rogers, Kevin Shaun. "Laser desorption/laser ionization mass spectroscopy." Thesis, University of Salford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357037.

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Wu, Jianfeng. "Thulium Doped Microsphere Laser and Fiber Laser." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1369%5F1%5Fm.pdf&type=application/pdf.

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Baudin, Lucie. "Structuration de surface par laser dans l’environnement des accélérateurs de particules : relation entre topographie superficielle, adhésion des particules et compatibilité aux applications ultravide." Thesis, Université Paris sciences et lettres, 2020. http://www.theses.fr/2020UPSLM052.

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La structuration laser des surfaces a été développée au CERN pour le traitement des parois internes de l’enceinte à vide où circulent les protons. Le balayage de la surface par le faisceau laser creuse des sillons en ablatant le cuivre dont une partie est redéposée sur la surface sous la forme d’agrégats de particules. Cette rugosité à deux échelles absorbe efficacement les électrons, mais l’impact sur les autres fonctionnalités de la machine doit être vérifié. Pendant son opération, la surface est soumise à des forces électromagnétiques et des variations de température qui pourraient l’endomm
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26

Löser, Markus. "Diode-Pumped High-Energy Laser Amplifiers for Ultrashort Laser Pulses The PENELOPE Laser System." Helmholtz-Zentrum Dresden - Rossendorf, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-232322.

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The ultrashort chirped pulse amplification (CPA) laser technology opens the path to high intensities of 10^21 W/cm² and above in the laser focus. Such intensities allow laser-matter interaction in the relativistic intensity regime. Direct diode-pumped ultrashort solid-state lasers combine high-energy, high-power and efficient amplification together, which are the main advantages compared to flashlamp-pumped high-energy laser systems based on titanium-doped sapphire. Development within recent years in the field of laser diodes makes them more and more attractive in terms of total costs, compact
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Löser, Markus. "Diode-Pumped High-Energy Laser Amplifiers for Ultrashort Laser Pulses The PENELOPE Laser System." Doctoral thesis, Helmholtz-Zentrum Dresden - Rossendorf, 2017. https://tud.qucosa.de/id/qucosa%3A30755.

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The ultrashort chirped pulse amplification (CPA) laser technology opens the path to high intensities of 10^21 W/cm² and above in the laser focus. Such intensities allow laser-matter interaction in the relativistic intensity regime. Direct diode-pumped ultrashort solid-state lasers combine high-energy, high-power and efficient amplification together, which are the main advantages compared to flashlamp-pumped high-energy laser systems based on titanium-doped sapphire. Development within recent years in the field of laser diodes makes them more and more attractive in terms of total costs, compact
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28

Carns, Jennifer. "Semiconductor Optical Amplifier as a Phase Modulator for Short-Pulse Synthetic Aperture Ladar and Vibrometry." University of Dayton / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1335278035.

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29

Kiehn, G. P. "XUV laser amplication in recombining laser produced plasmas." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379973.

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Romagnani, L. "Laser-plasma investigations employing laser-driven proton probes." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426587.

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Qiu, Wenqian. "Modelling of laser-plasma in laser microspectral analysis." Thesis, University of Aberdeen, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386302.

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The behaviour of the laser-produced plasma plume plays an important part in understanding and controlling the laser material processing involved in laser microspectral analysis. A multi-dimensional time-dependent model has been developed to simulate the transient material behaviour after an intense laser pulse irradiating a target surface. In this model, the heating and phase transition of the target material have been studied using the heat transfer theory, and the formation and evolution of the plasma plume were modelled by the Euler equations of fluid dynamics, which include the conservatio
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Hamidi, Serajeddin. "Filamentation of laser light in laser-produced plasmas." Thesis, University of Essex, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.279422.

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Lee, Junho. "Semiconductor diode laser with saturable absorber (S-laser)." [Gainesville, Fla.] : University of Florida, 2004. http://purl.fcla.edu/fcla/etd/UFE0004277.

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Komashko, Aleksey Mikhaylovich. "Laser-material interaction of powerful ultrashort laser pulses /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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Chung, S. H. "Gunn laser." Thesis, University of Essex, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421149.

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Vigil, Ricardo. "Laser accelerator." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/44024.

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Approved for public release; distribution is unlimited<br>In 1979,W. B. Colson and S. K. Ride proposed a new kind of electron accelerator using a uniform magnetic field in combination with a circularly-polarized laser field. A key concept is to couple the oscillating electric field to the electron’s motion so that acceleration is sustained. This dissertation investigates the performance of the proposed laser accelerator using modern high powered lasers and mag-netic fields that are significantly improved over the values in the original analysis. The relativistic equations of motion for the ele
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Lee, Soo-Keun. "Laser photocatalysts." Thesis, Robert Gordon University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344019.

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Mendiola, David Mario. "Laser guitar." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45322.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.<br>Includes bibliographical references (p. 24).<br>Music is constantly evolving, both in the culture and musical theory that dictates its structure, and the technology used to create the actual sound. This thesis explores a direction for development of one of the most proven instruments in musical brainstorming as well as live performance; the guitar. The form and feel has stayed nearly the same since its conception and it is a solid foundation with which to integrate modern technology. The design is t
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Monson, Paul J. E. "Laser hardfacing." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47187.

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Kashkol, Tania. "Hederns lagar." Thesis, Enskilda Högskolan Stockholm, Högskolan för mänskliga rättigheter och demokrati, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ths:diva-1320.

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In 2020, it has been confirmed that approximately 240,000 people in Sweden are exposed to some kind of honor-related violence that can, in the worst case, lead to another persons death. The report claims that the dark figure is much higher than what the existing figures show. In this essay there will be a couple of cases that will be presented. The cases has a huge part of the Swedish legal system and attitude change towards honor-related violence and honor killing. The reasoning around the cases will be presented in order for the reader to gain knowledge and concretization of the Swedish stat
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Neto, Jonas Jakutis. "Lasers de Nd:YLF de baixo ganho operando na transição de quase-três níveis e em lasers Raman." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-29042013-100734/.

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Lasers operando nas regiões espectrais do azul e do amarelo-laranja foram recentemente requisitados pelo mercado de aplicações quer para melhorar as tecnologias já conhecidas ou para possibilitar a criação de novas. Isso é devido às propriedades destas regiões espectrais, com o azul trazendo características tais como fótons de alta energia e feixes limitados por difração menores, enquanto a faixa do amarelo-laranja é ainda uma região espectral difícil de se atingir e não foi totalmente acessada ou nem mesmo acessada por fontes de luz laser eficientes. Aplicações dos lasers azuis são encontrada
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42

You, Yan. "Pulsed Laser Injected Enhancement Cavity for Laser-electron Interaction." Phd thesis, Université Paris Sud - Paris XI, 2014. http://tel.archives-ouvertes.fr/tel-01011958.

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X-ray diffraction and scattering, X-ray spectroscopy, and X-ray crystallography are widely used in the life sciences, material science, and medical diagnosis. High-quality and high-brightness X-rays are a strong requirement to improve applications. Inverse Compton scattering (ICS) X-ray source has attracted great interests worldwide lately. To significantly enhance the average X-ray photon flux, a compact electron storage-ring combined with a high finesse optical enhancement cavity (OEC) can be utilized. In such a system, the collision rate between the electron beam and the laser pulse is great
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43

Clipston, Nigel L. "Laser desorption/laser ionization Time-of-Flight Mass Spectrometry." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360476.

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44

Purcell, S. M. "Laser induced molecular motion in strong nonresonant laser fields." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/19225/.

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The optical dipole force from a singe focussed laser beam was used to study the role of laser-induced molecular alignment on the centre-of-mass motion of carbon disulphide molecules in a molecular beam. The translational, rotational and vibrational temperatures of the carbon disulphide molecules were measured to be 3.4\pm0.2 K, 35\pm10 K and 250\pm14 K respectively. The velocity of the beam was measured to be 542\pm22 m s ^{-1}. Time-of-flight mass spectroscopy was used to measure the acceleration and deceleration of the molecules. Maximum velocity changes of 7.5 m s ^{-1} and 10 m s ^{-1} wer
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45

Dale, Michael John. "Laser desorption laser photoionisation time-of-flight mass spectrometry." Thesis, University of Edinburgh, 1994. http://hdl.handle.net/1842/13547.

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The work described in this thesis is concerned with the development and application of laser desorption laser photoionisation time-of-flight mass spectrometry (L<SUP>2</SUP>TOFMS). This technique has been used to enable photoionisation mass spectra of a very wide variety of involatile and thermally labile molecules to be recorded. The instrument used for this work is described along with an overview of the fundamental principles behind this methodology. A number of specific classes of molecules have been studied using the L<SUP>2</SUP>TOFMS. These include polyaromatic hydrocarbons, porphyrins,
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46

Ghneim, Said Nimr 1953. "Laser pulse amplification through a laser-cooled active plasma." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276868.

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Recent advances in experimental laser cooling have shown the possibility of stopping an atomic beam using the light pressure force of a counter-propagating laser wave. As an application to laser cooling, it is proposed to build a single frequency cesium laser that has a narrow linewidth. Laser cooling techniques are used to cool an atomic beam of cesium to an average velocity of 5 m/s, corresponding to a temperature of 0.2°K. Expressions of the basic forces that a laser wave exerts on atoms are derived according to a semi-classical approach. The experimental problems and methods of avoiding th
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47

Chauzat, Corinne. "Études expérimentales de lasers microchips à émission continue mono-fréquence à 553 nm et à 561 nm, de puissance supérieure à 200 mW." Thesis, Rennes 1, 2014. http://www.theses.fr/2014REN1S007.

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Le remplacement des lasers à colorant émettant dans la gamme 550-570 nm, à l'aide de lasers solides, représente un véritable enjeu industriel. Les applications sont multiples tant dans le domaine de la recherche biomédicale que dans celui de la métrologie. Quelques solutions ont été développées à 561 nm et à 553 nm. Néanmoins, elles ne permettent pas de fournir des lasers intégrables parfaitement mono-fréquences émettant en continu un faisceau gaussien, d'une puissance supérieure ou égale à 200 mW. Dans ces travaux, nous proposons une étude théorique et expérimentale de cavités lasers solides
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48

Bégué, Geoffrey. "Etude de l'adhérence de barrière thermique EB-PVD par choc laser (LASAT) pour le développement d'un contrôle non-destructif sur aube de turbine aéronautique." Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0093.

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L'évaluation de la résistance interfaciale des systèmes barrière thermique EB-PVD est primordiale afin de pouvoir contrôler la production d'aubes de turbine revêtues et d'améliorer la compréhension des phénomènes d'écaillage de la céramique qui se produisent en fonctionnement. L'essai d'adhésion par choc laser LASAT qui s'appuie sur la propagation bidimensionnelle des ondes de choc (le phénomène LASAT-2D) consiste à mesurer le diamètre de fissure interfaciale pour différents tirs effectués à densité de puissance laser croissante. L'application de l'essai LASAT sur une pièce industrielle nécess
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49

Choi, Ji Yeon. "Ecriture par Laser de fonctionnalités optiques : éléments diffractifs et ONL." Phd thesis, Université Sciences et Technologies - Bordeaux I, 2010. http://tel.archives-ouvertes.fr/tel-00583861.

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A la suite de la première démonstration de l'écriture de guide d'onde au sein de verres en 1996 par laser femtoseconde, l'écriture direct par Laser Femtoseconde (Femtoseconde Direct Laser Writing - FLDW) est apparu comme une technique souple pour la fabrication de structure photonique en trois dimensions au sein de matériaux pour l'optique. La thèse a porté sur l'inscription par laser femtoseconde de fonctionnalités optiques au sein de verres. Des éléments diffractifs par modification de l'indice de réfraction et des structures présentant des propriétés de luminescence ou d'optique non linéair
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50

Sadeghian, Zahra. "Laser sintering of hydroxyapatite by laser-wise slurry deposition (LSD)." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974414913.

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