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Dissertations / Theses on the topic 'Laser scalpel'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Lim, Keng Hui 1975. "Microsurgical laser scalpel based on spectroscopic feedback : the "smart scalpel"." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/89374.

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2

Sebern, Elizabeth L. (Elizabeth Lynn). "Laser treatment of hemangiomas using spectroscopic feedback : the "smart scalpel"." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/43602.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.<br>Includes bibliographical references (leaves 66-68).<br>While feedback control is widespread throughout many engineering fields, surgical instruments with embedded feedback control systems are uncommon. To improve the effectiveness of microsurgical techniques, we are presently developing a semi-autonomous robotic surgical tool (called the "Smart Scalpel") as an alternative approach to treatment of skin hemangiomas like nevus flammus (port wine stain or PWS). Current PWS phototherapy relies on selecti

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3

Бут, Л. Г., А. Ю. Ткаченко, А. І. Яровець, Василь Федорович Нефедченко, Василий Федорович Нефедченко та Vasyl Fedorovych Nefedchenko. "Лазерний скальпель". Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13933.

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4

Rocha, Marcelo dos Santos. "Técnica cirúrgica incisional com bisturi versus laser de CO2 : estudo preliminar comparativo do processo de cicatrização." Master's thesis, Universidade de Lisboa. Faculdade de Medicina Veterinária, 2013. http://hdl.handle.net/10400.5/6387.

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Dissertação de Mestrado Integrado em Medicina Veterinária<br>A cirurgia com laser de CO2 tem como principais benefícios menor grau de dor, menos hemorragia, menos infeções, menos edema, rubor e desconforto pós-cirurgico, proporciona ao paciente a capacidade de retomar as suas atividades normais mais cedo com um menor tempo cirúrgico e um campo cirúrgico mais limpo. Inicialmente utilizado na Medicina Humana foi adaptado para a Medicina Veterinária mas ainda em processo de expansão. O presente estudo foi desenvolvido numa amostra de 14 animais (n = 14) pertencentes à espécie Canis familiaris sen

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5

Шевченко, В. О., та Я. О. Франков. "Діодний лазерний скальпель для стоматологічного використання". Thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/79204.

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В основі дії на біологічні тканини високоенергетичних лазерів, лежить трансформація світлової енергії, що випромінюється в теплову з виникненням виключно високої температури. Наслідком цього є випарювання міжклітинної точної та внутрішньоклітинної рідин різноманітних тканин з наступним утворенням газоподібних продуктів випарювання та горіння та формуванням хірургічного розрізу, в основі якого лежить коагуляційний термічний некроз тканин.

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6

Silva, Levi Picão da. "Comparação da variação dos valores séricos de proteína C-reactiva (PCR) entre cirurgia com laser de dióxido de carbono (CO2) e cirurgia com lâmina de bisturi, nos períodos pré- e pós-cirúrgicos em doentes da espécie Canis familiaris." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2018. http://hdl.handle.net/10400.5/15832.

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Dissertação de Mestrado Integrado em Medicina Veterinária<br>No cão, a Proteína C-Reactiva (PCR) representa uma proteína de fase aguda (PFA) assumindo a função de marcador inflamatório, e apresentando maior sensibilidade, estabilidade e uma resposta mais rápida relativamente a outros marcadores inflamatórios, como por exemplo, a contagem de leucócitos (WBC). Comparativamente aos métodos convencionais de incisão cirúrgica, o Laser de Dióxido de Carbono (CO2) está associado a múltiplas vantagens como a menor hemorragia, edema e dor para o doente. O estudo foi realizado numa amostra de 50 c

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7

Shaarawi, Mohammed Saad. "Laser chemical vapor deposition of millimeter scale three-dimensional shapes." Access restricted to users with UT Austin EID Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3023559.

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8

Choi, Hae Woon. "Femtosecond laser material processing for micro-/nano-scale fabrication and biomedical applications." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1184883900.

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9

Powell, Rock Allen. "On-line depth measurement of micro-scale laser drilled holes." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2009. http://scholarsmine.mst.edu/thesis/pdf/Powell_09007dcc806b6dfc.pdf.

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Thesis (M.S.)--Missouri University of Science and Technology, 2009.<br>Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed August 14, 2009) Includes bibliographical references (p. 16-17).

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10

Griffiths, Jonathan. "Modelling of laser forming at macro and micro scales." Thesis, University of Liverpool, 2012. http://livrepository.liverpool.ac.uk/9633/.

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Laser forming (LF) offers industry the promise of controlled shaping of metallic and nonmetallic components in prototyping, correction of design shape or distortion and precision adjustment applications. In order to fulfil this promise in a manufacturing environment the process must have a high degree of controllability, which can be achieved through a better understanding of its underlying mechanisms. The work presented in this thesis is primarily concerned with the use of modelling of the LF process at macro and micro scales as a means of process development. At the macro scale, finite eleme

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11

Guo, Wei. "Laser Micro/Nano Scale Surface Patterning by Particle Lens Array." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.508543.

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12

Aktürk, Selçuk. "Extending ultrashort-laser-pulse measurement techniques to new dimensions, time scales, and frequencies." Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-04072005-222544/unrestricted/akturk%5Fselcuk%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Physics, Georgia Institute of Technology, 2005.<br>Rick Trebino, Committee Member ; Philip First, Committee Member ; Chandra Raman, Committee Member ; Ali Adibi, Committee Member ; John Buck, Committee Member. Vita. Includes bibliographical referenced.

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13

Farhana, Baset. "Micro/nano-scale Manipulation of Material Properties." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31862.

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Femtosecond laser interaction with dielectrics has unique characteristics for micromachining, notably non-thermal interaction with materials, precision and flexibility. The nature of this interaction is highly nonlinear due to multiphoton ionization, so the laser energy can be nonlinearly absorbed by the material, leading to permanent change in the material properties in a localized region of Mu-m3. This dissertation demonstrated the potential of these nonlinear interactions induced changes (index modification and ablation for machining) in the dielectrics and explored several practical appli

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14

Mermelstein, Michael Stephen. "A large-scale three-dimensional imaging system based on laser speckle." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/38057.

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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.<br>Includes bibliographical references (leaves 61-62).<br>by Michael Stephen Mermelstein.<br>M.S.

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15

Cockcroft, Stephanie. "VUV 157nm F₂ laser irradiation of micro- and nano-scale particles." Thesis, University of Hull, 2012. http://hydra.hull.ac.uk/resources/hull:7106.

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Micro- and nanoscale particles have recently become the focus of a great deal of research interest due to their wide-ranging potential in a number of applications. This thesis concerns the interaction of small particles with the 157nm wavelength vacuum ultraviolet, VUV, emission from a molecular fluorine gas, F₂, laser. The laser system is introduced and an overview of laser ablation of polymers is presented. Small particles of different materials and sizes, supported on polymeric substrates, are irradiated at a wavelength of 157nm. The silica particles are transparent to the 157nm radiation,

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16

Hong, Won-kook. "Single layer routing : mapping topological to geometric solutions." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66030.

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17

Akturk, Selcuk. "Extending ultrashort-laser-pulse measurement techniques to new dimensions, time scales, and frequencies." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6892.

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In the last decade, there has been tremendous progress in the field of ultrashort-pulse measurement. However, this effort has focused mostly on the temporal behavior of 100-fs, 800-nm ultrashort pulse, ignoring other pulse lengths, wavelengths, and the very common space-time couplings or so called spatio-temporal distortions. In this thesis work, I do an extensive study of spatio-temporal distortions and their measurement using Frequency Resolved Optical Gating (FROG) and its relatives. I clarify some ambiguities in the descriptions of these effects in the existing theory and establish a more

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18

Saeidi, Kamran. "Stainless steels fabricated by laser melting : Scaled-down structural hierarchies and microstructural heterogeneities." Doctoral thesis, Stockholms universitet, Institutionen för material- och miljökemi (MMK), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-129055.

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Additive manufacturing is revolutionizing the way of production and use of materials. The clear tendency for shifting from mass production to individual production of net-shape components has encouraged using selective laser melting (SLM) or electron beam melting (EBM). In this thesis, austenitic, duplex and martensitic stainless steel parts were fabricated by laser melting technique using fixed laser scanning parameters. The fabricated steel parts were characterised using XRD, SEM, TEM/STEM, SADP and EBSD techniques. Mechanical properties of the fabricated steel parts were also measured. The

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19

Sakabe, Ayaka. "Methane dynamics in a temperate forest revealed by plot-scale and ecosystem-scale flux measurements." Kyoto University, 2015. http://hdl.handle.net/2433/199353.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(農学)<br>甲第19029号<br>農博第2107号<br>新制||農||1030(附属図書館)<br>学位論文||H27||N4911(農学部図書室)<br>31980<br>京都大学大学院農学研究科地域環境科学専攻<br>(主査)教授谷誠, 教授北山兼弘, 教授川島茂人<br>学位規則第4条第1項該当

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20

Spradlin, Thomas Joshua. "Process Sequencing for Fatigue Life Extension of Large Scale Laser Peened Components." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1316292716.

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21

Lloyd, Robert William. "Laser generation and applications of micron and submicron scale features on metals." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/laser-generation-and-applications-of-micron-and-submicron-scale-features-on-metals(8afc9f16-a433-4cc1-b0be-d9c87b8140a3).html.

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This thesis describes the formation of and applications of self-assembled structures on metals. Primarily the focus of this PhD project is on the formation of surfaces structures on stainless steel (AISI 304) but other metals have been studied. Laser generated surface structures have been applied to the modification of wettability and reflectivity with a view towards developing these processes for industrial applications. Compared to conventional techniques for the modification of wettabililty, lasers offer the advantage of being a relatively simple technique for the modification of surface st

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22

Sequoia, Kevin Lamar Williams. "Extreme-ultraviolet radiation transport in small scale length laser-produced tin plasmas." Diss., [La Jolla, Calif.] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3344640.

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Thesis (Ph. D.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed March 19, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 170-179).

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23

Miller, Ross Alan. "Thermo-Mechanical Selective Laser Assisted Die Transfer." Thesis, North Dakota State University, 2011. https://hdl.handle.net/10365/29859.

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Laser Induced Forward Transfer (LIFT) techniques show promise as a disruptive technology which will enable the placement of components smaller than what conventional pick-and-place techniques are capable of today. Limitations of current die-attach techniques are presented and discussed and present the opportunity for a new placement method. This study introduces the Thermo-Mechanical Selective Laser Assisted Die Transfer (tmSLADT) process and is an application of the unique blistering behavior of a dynamic releasing layer when irradiated by low energy focused UV laser pulses. The potential of

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24

Edwards, Robert Kenneth. "Laser peen forming for the micro-scale shaping and adjustment of metallic components." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.526885.

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25

Alasadi, Alaa. "Development of laser direct writing for fabrication of micro/nano-scale magnetic structures." Thesis, University of Sheffield, 2018. http://etheses.whiterose.ac.uk/22820/.

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Traditional lithographic techniques used to fabricate a magnetic structure are often complex, time consuming, dependent on other techniques and expensive. Laser direct writing (LDW) can potentially overcome many of these drawbacks and may be a cheaper, faster and easier route to fabricating technique micro-/nano-magnetic structures. The main aim of this project is to fabricate magnetic structures through LDW. Two types of LDW were used to fabricate magnetic structures: subtractive LDW (LDW-) and laser-induced forward transfer (LIFT). LIFT was used to transfer permalloy (Ni81Fe19) using three l

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26

Deacon, Lawrence. "A micron-scale laser-based beam profile monitor for the international linear collider." Thesis, Royal Holloway, University of London, 2009. http://repository.royalholloway.ac.uk/items/a6163010-d859-63a9-7a72-189ddc8c3a34/9/.

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A micron-scale laser-wire system was constructed and tested at the Accelerator Test Facility (ATF) extraction line at the High Energy Accelerator Research Organisation (KEK) in Japan. The system was evaluated through collision tests, electron beam tests, laser beam measurements and simulations. Beam halo measurements were carried out in order to compare the beam halo to a theory of its production through gas scattering and towards evaluating it as a source of background for diagnostic instruments at ATF2 and the International Linear Collider (ILC). Simulations were carried out to test the sign

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27

Fan, Lei. "Uncertainty in terrestrial laser scanning for measuring surface movements at a local scale." Thesis, University of Southampton, 2014. https://eprints.soton.ac.uk/372009/.

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Terrestrial laser scanning (TLS) is a remote sensing tool that can record a large amount of accurate topographical information with a fine spatial resolution over a short period of time. It has been used increasingly for measuring ground surfaces (i.e. topographical survey) and monitoring surface movements, such as those caused by landslides. However, the capability of this technique in these applications has not been fully explored in the literature, and thus forms the focus of this thesis. A quantitative study has been carried out to investigate the major error sources that affect the accura

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28

Mathur, Pulkit V. D. "Fine-scale modeling of failure in an adhesive layer." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1454.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains xviii, 70 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 68-69).

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29

Deng, Chaodan. "Process development for si-based nanostructures using pulsed UV laser induced epitaxy." Full text open access at:, 1995. http://content.ohsu.edu/u?/etd,206.

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30

Hsieh, Hung-Lin. "Novel interferometric stage based on quasi-common-optical-path configuration for large scale displacement." Troyes, 2011. http://www.theses.fr/2011TROY0001.

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Sur la base d’une configuration QCOP en anglais quasi-common-optical-path, une nouvelle plateforme interferométrique pour le déplacement à grande échelle a été développée. La platefome inclut un interféromètre QCOP et une platine à deux étages. L’interféromètre QCOP se compose d’une source, hétérodyne, un réseau holographique bidimensionnel, deux lames ¼ d’onde et une détection synchrone. Deux configurations QCOP, normale et différentielle ont été développées. La méthode différentielle permet une sensibilité et résolution accrues. Les performances de l’interféromètre QCOP ont été testées pour

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31

Croft, Holly. "Hyperspectral, directional reflectance factors and laser techniques for monitoring fine-scale soil surface roughness." Thesis, University of Exeter, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.516878.

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32

Cemlyn, Benjamin R. "Dynamics of tunable lasers in small-scale photonic integrated circuits." Thesis, University of Essex, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.605150.

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Mutually coupled lasers have received much attention in recent years as a source of rich non linear dynamics, enabling optical configurations for new ranges of applications, particularly chaos-based encrypted communications. However the overall dynamics of the mutually coupled configuration has not received so much attention, particularly with regard to the practical range of parameters for the lasers. This thesis investigates the dynamics of the mutually coupled lasers system in respect of all the significant causes and influences on dynamics. Furthermore, the lasers here are widely tuneable,

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33

Giovannini, Lorenzo. "Urban scale phenomena and boundary layer processes in mountain valleys." Doctoral thesis, Università degli studi di Trento, 2012. https://hdl.handle.net/11572/368710.

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The urban climate of the city of Trento, adopted as a representative case study of urban weather and climate phenomena in a mid-sized city lying in a mountain valley, is investigated using different methods and on different spatial scales. First the intensity of the Urban Heat Island (UHI) is analyzed evaluating the differences between air temperatures measured at an urban automated weather station on a tower, over mean rooftop level, and at five suburban/rural weather stations, located few kilometers around the city boundaries. It is found that the extra-urban weather stations, being affecte

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34

Giovannini, Lorenzo. "Urban scale phenomena and boundary layer processes in mountain valleys." Doctoral thesis, University of Trento, 2012. http://eprints-phd.biblio.unitn.it/771/1/PhD_Thesis_Lorenzo_Giovannini_def.pdf.

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The urban climate of the city of Trento, adopted as a representative case study of urban weather and climate phenomena in a mid-sized city lying in a mountain valley, is investigated using different methods and on different spatial scales. First the intensity of the Urban Heat Island (UHI) is analyzed evaluating the differences between air temperatures measured at an urban automated weather station on a tower, over mean rooftop level, and at five suburban/rural weather stations, located few kilometers around the city boundaries. It is found that the extra-urban weather stations, being affect

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35

Mattingly, Sean Walter. "Velocity space degrees of freedom of plasma fluctuations." Diss., University of Iowa, 2017. https://ir.uiowa.edu/etd/5967.

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This thesis demonstrates a measurement of a plasma fluctuation velocity-space cross-correlation matrix using laser induced fluorescence. The plasma fluctuation eigenmode structure on the ion velocity distribution function can be empirically determined through singular value decomposition from this measurement. This decomposition also gives the relative strengths of the modes as a function of frequency. Symmetry properties of the matrix quantify systematic error. The relation between the eigenmodes and plasma kinetic fluctuation modes is explored. A generalized wave admittance is calculated for

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36

Hairaye, Camille. "Fonctionnalisation de surfaces par microstructuration laser." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAD013/document.

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Cette thèse porte sur la fonctionnalisation de surface par microstructuration laser. L’étude expérimentale a consisté à texturer des surfaces d’acier inoxydable avec une source laser impulsionnelle à fibre dopée Yb (1030 nm, 300 fs), dans le but de contrôler leur mouillabilité et de les rendre superhydrophobes. Par une optimisation des conditions d’irradiation, il est possible de conférer à la surface une structuration à double échelle de rugosité. Des structures d’une dizaine de micromètres sont réalisées par ablations successives selon un motif de lignes croisées, sur lesquelles se forment d

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37

Cooke, William. "On the use of selective laser sintering for the production of scaled structural models. Vol.1." Thesis, University of Sheffield, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.531214.

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38

Horne, Kyle S. "Nano-scale Thermal Property Prediction by Molecular Dynamics Simulation with Experimental Validation." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3089.

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Quantum cascade laser (QCL) diodes have potential applications in many areas including emissions analysis and explosives detection, but like many solid-state devices they suer from degraded performance at higher temperatures. To alleviate this drawback, the thermal properties of the QCL diodes must be better understood. Using molecular dynamics (MD) and photothermal radiometry (PTR), the thermal conductivity of a representative QCL diode is computed and measured respectively. The MD results demonstrate that size eects are present in the simulated systems, but if these are accounted for by norm

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Sistrunk, Emily Frances. "Scaled Strong Field Interactions at Long Wavelengths." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1318518567.

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40

Lee, Heon Ju. "Application of a ratiometric laser induced fluorescence (LIF) thermometry for micro-scale temperature measurement for natural convection flows." Texas A&M University, 2003. http://hdl.handle.net/1969.1/1128.

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A ratiometric laser induced fluorescence (LIF) thermometry applied to micro-scale temperature measurement for natural convection flows. To eliminate incident light non-uniformity and imperfection of recording device, two fluorescence dyes are used: one is temperature sensitive fluorescence dye (Rhodamine B) and another is relatively temperature insensitive fluorescence dye (Rhodamine 110). Accurate and elaborate calibration for intensity ratio verses temperature obtained using an isothermal cuvette, which was controlled by two thermo-bathes. 488nm Ar-ion laser used for incident light and two f

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41

Rausch, Stefan [Verfasser]. "Controlling the electric-field of few-cycle laser pulses on the cycle-scale / Stefan Rausch." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/1008409421/34.

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42

Yamashita, Masatsugu, Chiko Otani, Kodo Kawase, et al. "Backside observation of large-scale integrated circuits with multilayered interconnections using laser terahertz emission microscope." American Institite of Physics, 2009. http://hdl.handle.net/2237/12631.

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43

Shafak, Kemal Verfasser], and Franz X. [Akademischer Betreuer] [Kärtner. "Large-Scale Laser-Microwave Synchronization for Attosecond Photon Science Facilities / Kemal Shafak ; Betreuer: Franz Kärtner." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1133262112/34.

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Shafak, Kemal [Verfasser], and Franz X. [Akademischer Betreuer] Kärtner. "Large-Scale Laser-Microwave Synchronization for Attosecond Photon Science Facilities / Kemal Shafak ; Betreuer: Franz Kärtner." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://nbn-resolving.de/urn:nbn:de:gbv:18-85229.

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45

Willoughby, Barrie John. "The assessment of a towed laser slopemeter for measuring short scale sea surface wave slopes." Thesis, University of Southampton, 1998. https://eprints.soton.ac.uk/393585/.

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46

Moening, Joseph Patrick. "Formation of Nano-Sharp Tips and Microbumps on Silicon and Metal Films by Localized Single-Pulse Laser Irradiation." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1279052874.

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47

Lee, Christopher Gee-Yin. "The design of a towed laser slopemeter system for the measurement of short scale sea waves." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295613.

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48

Promoppatum, Patcharapit. "Numerical Modeling of Thermal and Mechanical Behaviors in the Selective Laser Sintering of Metals." Research Showcase @ CMU, 2018. http://repository.cmu.edu/dissertations/1181.

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The selective laser sintering (SLS) process or the additive manufacturing (AM) enables the construction of a three-dimensional object through melting and solidification of metal powder. The primary advantage of AM over the conventional process is providing the manufacturing flexibility, especially for highly complicated products. The quality of AM products depends upon various processing parameters such as laser power, laser scanning velocity, laser scanning pattern, layer thickness, and hatch spacing. The improper selection of these parameters would lead to parts with defects, severe distorti

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Mwansa, Sosthenes. "Comparative investment analysis for small scale broiler and layer enterprises in Zambia." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/15903.

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Master of Agribusiness<br>Department of Agricultural Economics<br>Allen M. Featherstone<br>Small scale broiler and layer production constitutes a significant part of the poultry industry in Zambia. However, the contribution of small scale enterprises to broiler production is more pronounced than layers with statistics showing 60 and 30 percent for broilers and layers, respectively. This study was carried out for the purpose of determining the economic profitability of both broiler and layer enterprises and also to evaluate their degree of attractiveness for investment. The thesis used the Net

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Guenfoud, Nassardin. "On the multi-scale vibroacoustic behavior of multi-layer core topology systems." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSEC010.

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Les panneaux sandwichs en nid d'abeille ont fait l'objet d'intenses recherches ces dernières décennies. En effet, outre leurs bonnes performances mécaniques et leur rapport rigidité poids faible, il en résulte une baisse importante des propriétés acoustiques. Ainsi, de nombreux designs sont régulièrement proposés afin de palier à cette problématique. En parallèle, différents modèles sont développés afin de modéliser des structures de plus en plus complexes, en utilisant notamment les propriétés périodiques dans le but d’étudier la propagation des ondes. Cette dernière permet une étude approfon

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