Relevant bibliographies by topics / YAG

Academic literature on the topic 'YAG'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "YAG"

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Wang, Rongrong, Yucheng Wang, Zhengyi Fu, Hao Wang, Weimin Wang, Jinyong Zhang, and Jiaoqun Zhu. "Spark plasma sintering of transparent YAG ceramics assisted by the YAH–YAG phase transformation." Journal of the European Ceramic Society 36, no. 8 (July 2016): 2153–56. http://dx.doi.org/10.1016/j.jeurceramsoc.2016.02.038.

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Vorona, Ihor, Roman Yavetskiy, Andrey Doroshenko, Sergey Parkhomenko, Ekaterina Chernomorets, Alexander Tolmachev, Sergey Frolov, Viktor Taranenko, Ruslan Limarenko, and Denis Kosyanov. "Reactive sintering of highly-doped YAG/Nd3+:YAG/YAG composite ceramics." Processing and Application of Ceramics 11, no. 4 (2017): 290–95. http://dx.doi.org/10.2298/pac1704290v.

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Multilayer YAG/Nd3+:YAG/YAG composite laser ceramics were obtained by the reactive sintering in vacuum. The effect of the neodymium ion concentration (1-4 at.%) on the formation of defects and optical quality of composite ceramics was studied. It was found that neodymium ions modify densification kinetics during solid-state reactive sintering of the highly-doped Nd3+:YAG ceramics by decreasing shrinkage rate in the temperature range 1320-1350 ?C. Differences in phase transformation kinetics during reactive sintering lead to generation of pores at the interface of adjacent layers which decrease the optical homogeneity of fabricated YAG/Nd3+:YAG/YAG composite ceramics. The influence of layered structure on the laser performance of optical ceramics was investigated. It was shown that the ceramics with multilayer composite architecture have slope efficiency almost twice as the single-layer ceramics with the same composition (22% and 12.5%, respectively).
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Асатрян, Г. Р., Е. В. Единач, Ю. А. Успенская, Р. А. Бабунц, А. Г. Бадалян, Н. Г. Романов, А. Г. Петросян, and П. Г. Баранов. "Влияние антисайт-дефектов в иттрий-алюминиевом гранате на парамагнитные центры Ce-=SUP=-3+-=/SUP=- и Tb-=SUP=-3+-=/SUP=-." Физика твердого тела 62, no. 11 (2020): 1875. http://dx.doi.org/10.21883/ftt.2020.11.50065.124.

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В кристаллах иттрий-алюминиевого граната (YAG), содержащих примеси тербия и церия, наряду с основными сигналами электронного парамагнитного резонанса (ЭПР) ионов Tb3+ и Се3+, находящихся в додекаэдрических узлах решетки YAG в регулярном окружении, наблюдались линии с меньшей (несколько процентов) интенсивностью. Они также принадлежат парамагнитным центрам тербия и церия, но характеризуются несколько измененными параметрами --- начальным расщеплением уровней для некрамерсовых ионов Tb3+ и g-факторами для ионов Се3+. Показано, что природа таких центров и их число могут быть объяснены присутствием антисайт-дефектов YAl (ионов иттрия в октаэдрических позициях алюминия) в окружении Tb3+ и Се3+. Ключевые слова: электронный парамагнитный резонанс, иттрий-алюминиевый гранат, редкоземельные элементы, антисайт-дефекты.
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Avirneni, Ramana Kumari. "Development of Novel Substituted 1,2,3,4-tetrahydro Cyclohex-1,2,3-trihydro Cyclopenta [B] Indole Derivatives as Potential Therapeutic Agents." International Journal for Research in Applied Science and Engineering Technology 11, no. 4 (April 30, 2023): 1044–52. http://dx.doi.org/10.22214/ijraset.2023.50280.

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Abstract: The current study aims to synthesize, characterize, and evaluate a specific class of heterocyclic compounds called fused polycyclic indoles, in combination with carbazoles, carbolines, and their partially saturated counterparts. These compounds have been known to have potent biological activity. The study's procedures involve synthesizing these compounds and evaluating them for central nervous system activity. Results showed that all the compounds had CNS-depressing effects in mice. Some compounds, such as YA1 and YA5, were found to have a stronger CNS-depressing activity than others. All compounds tested, YA1 to YA7, caused more than 50% change in locomotor activity when compared to a standard drug. YA3 and YA5 were found to have the highest activity at 86.2% and 83.9% respectively after 120 minutes of administration at a dose of 100 mg/kg. In addition, the acute oral toxicity studies showed that YA3 was non-toxic and YA5 was found to be toxic. The findings of the study provide evidence that these title compounds have good CNS activity.
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Song, Jie Guang, Xiu Qin Wang, Fang Wang, Shi Bin Li, and Gang Chang Ji. "Influence of Coated Composite Powders on the Properties of ZrB2-YAG-Al2O3 Ceramics." Key Engineering Materials 602-603 (March 2014): 451–56. http://dx.doi.org/10.4028/www.scientific.net/kem.602-603.451.

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ZrB2, YAG and Al2O3 are widely applied because of some excellent performances, but ZrB2 is easily oxidized in the high-temperature air. To make the ZrB2 ceramics obtain better oxidation resistance, high-density ZrB2-YAG-Al2O3 ceramics were prepared. The influences of coated composite powders on the densification and the oxidation resistance of ZrB2-YAG-Al2O3 ceramics were investigated. The 80wt%ZrB2-YAG-Al2O3 multiphase ceramic materials from different composite raw materials with the spark plasma sintering technique were successfully prepared. The densification of ZrB2-YAG-Al2O3 ceramics with Al2O3-Y2O3 composite powder coated is easier than that of ZrB2-YAG-Al2O3 ceramics with YAG-Al2O3 powder mixed. The reaction temperature is lower than the 1100¡æ for synthesizing YAG powders from Al2O3-Y2O3 composite powders. The weight gain are increased with increased the oxidation temperature. B2O3 is reacted with Al2O3 to form Al18B4O33, Al18B4O33 is melted and coated on the surface of ceramics to form a protective layer for the oxidation resistance of ceramics at high temperature. The oxidation weight gain of ZrB2-YAG-Al2O3 ceramic with Al2O3-Y2O3 composite powder coated is lower than that of ZrB2-YAG-Al2O3 ceramic with YAG-Al2O3 powder mixed.
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JIANG Wei, 江炜, 何青 HE Qing, 陈振强 CHEN Zhen-qiang, 朱思祁 ZHU Si-qi, 陈在俊 CHEN Zai-jun, 王苏娥 WANG Su-e, 陈雨娇 CHEN Yu-jiao, and 尹浩 YIN Hao. "LD Side-pumped Laser Based on Nd∶YAG/Cr∶YAG/YAG Composite Crystal." ACTA PHOTONICA SINICA 43, no. 4 (2014): 414002. http://dx.doi.org/10.3788/gzxb20144304.0414002.

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LI Jing-zhao, 李景照, 陈振强 CHEN Zhen-qiang, and 朱思祁 ZHU Si-qi. "Passively Q-switched laser with a Yb∶YAG/Cr4+∶YAG/YAG composite crystal." Optics and Precision Engineering 26, no. 1 (2018): 55–61. http://dx.doi.org/10.3788/ope.20182601.0055.

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Wan, Yan, Meiyu Li, Erjuan Xie, Shoulei Xu, Yuyang Huang, and Wen Deng. "Luminescent properties and first-principles calculations of (Cr,Ca):YAG crystals." International Journal of Modern Physics B 31, no. 16-19 (July 26, 2017): 1744070. http://dx.doi.org/10.1142/s0217979217440702.

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The single crystals of YAG, Cr:YAG and (Cr,Ca):YAG were grown in an optical floating zone furnace. The experimental results show that the optical bandgap of the YAG, (Cr,Ca):YAG and Cr:YAG crystals is about 6.52, 6.31 and 5.50 eV, respectively. The optical bandgap of the (Cr,Ca):YAG crystal is smaller than YAG and larger than Cr:YAG. First-principles calculation results showed that the additions of Cr into YAG will give rise to the change of the electronic states. In a Cr:YAG crystal, the Cr[Formula: see text] impurity introduces a band of 3[Formula: see text] occupied state near the Fermi level, which significantly narrowed the bandgap of Cr:YAG. In a (Cr,Ca):YAG crystal, as the Ca[Formula: see text] ions substitute for the Y[Formula: see text] ions, some of the Cr[Formula: see text] ions will change into Cr[Formula: see text] ions due to the charge balance, which increased the bandgap of the (Cr,Ca):YAG crystal in comparison with that of the Cr:YAG crystal. The calculation is in agreement with the experimental results.
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Zhao, Wen Bo, Xin Liang, Fa Mei Hu, Liang Liang You, Bo Feng Ma, Ruo Lan Wang, Hong Ying Liu, et al. "Preparation and Properties of YAG Powder and Porous Ceramics." Advanced Materials Research 1058 (November 2014): 217–20. http://dx.doi.org/10.4028/www.scientific.net/amr.1058.217.

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Yttrium aluminum garnet (YAG) with a chemical composition of Y3Al5O12 is an important advanced structural and functional material.The preparation conditions were a pH of 9, a titration rate of 10ml/minute and a reaction time of 60 minutes. The analysis shows that the YAG precursor does not have an obvious characteristic crystalline diffraction peak, the characteristic diffraction peak of YAG was found after the calcination of the YAG precursor at 1100¡æ for 1 hour, the characteristic diffraction peak of YAG is strong, which indicates that the YAG crystalline phase is integrated and pure. The pore microstructure of porous YAG ceramics marked differed with an increase in the sintering temperature, the compressure strength of porous YAG ceramics is increased with an increase in the sintering temperature, the compressure strength shows the opposite rule with the prosity, which indicaties the mechanical properties of materials are effacted with the densification effect of materials.
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Wu, Chang Ming, Yan Yang, Hui Min Sun, Da Deng, Mei Hua Chen, Jie Guang Song, Lin Chen, Ming Han Xu, and Cheng Wei Hao. "Effect of Molding Processing on Properties of YAG Porous Ceramics via Dry Pressing Molding Method." Materials Science Forum 934 (October 2018): 134–39. http://dx.doi.org/10.4028/www.scientific.net/msf.934.134.

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YAG materials have a number of unique properties, the application is very extensive. In order to improving the properties of YAG porous materials, the effect of forming processing on the properties of YAG porous ceramics is investigated. Through the results and analysis, the conclusions showed that the porosity of YAG porous ceramics gradually decreased with the molding pressure increases, and the compressive strength of YAG porous ceramics shows a rising trend. The size and number of pores in the microstructure are reduced with increasing the forming pressure, there are inherently many voids in the YAG porous ceramics body at low forming pressures. The porosity of YAG porous ceramic decreases with the increase of dwell time, however, the process of extending from 5 min to 10 min is much faster than the rate of descending from 10 min to 15 min. The size and number of pores in the microstructure are reduced with extending the holding pressure time, which also makes YAG porous ceramics pose the higher mechanical strength. Through the analysis of the results, when the forming pressure is 10MPa, the porosity of YAG porous ceramics is 41.11% and the compressive strength is 5.8MPa, the porosity and compressive strength of YAG porous ceramics is better.
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Dissertations / Theses on the topic "YAG"

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Spina, Giulia. "Transparent YAG and composite ceramic materials in the system Alumina-YAG-Zirconia." Thesis, Lyon, INSA, 2012. http://www.theses.fr/2012ISAL0023.

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Dans cette étude de doctorat, de la poudre de Y3Al5O12 (YAG) a été synthétisé avec plusieurs méthodes: atomisation, synthèse de réaction et co-précipitation. Le procédé de synthèse le plus prometteur, la co-précipitation, a été optimisé pour obtenir une poudre hautement frittable, présentant une phase pure. Le traitement approprié avant frittage, comprenant calcination, efficace dispersion et séchage homogène, a été réalisé. La poudre de YAG a été dispersée avec plusieurs méthodes, avant frittage. Grâce à la technique Spark Plasma Sintering (SPS) une évaluation très rapide de l'influence des différents traitements a été réalisée. Il a été constaté que, pour une poudre obtenue avec une telle synthèse, la méthode de dispersion est cruciale afin de obtenir une transparence élevée du materiaux fritté. En raison de l'aptitude au frittage de la poudre, du traitement approprié avant frittage et de la basse température du cycle effectué par SPS, un matériau à grains fins a été obtenu. Des mesures de spectroscopie de photoélectrons (XPS) ont été effectuées sur la poudre de YAG et sur le matériaux fritté, et plusieurs differences ont été mises en évidence. Quelques hypothèses ont été faites pour expliquer les differences observées, et certains preuves supplémentaires pour les vérifier ont été mises en avant. Une poudre composite alumine-zircone-YAG a été synthétisé à partir d'une poudre d'alumine commerciale, qui a été fonctionnalisé avec chlorures de yttrium et de zirconium. Les traitements de pré-frittage appropriées ont été effectués, comprenant une calcination à basse température et une calcination "rapide", pour favoriser la germination des petits cristallites. Deux méthodes de mise en forme, coulage et pressage, ont été réalisées. Il a été constaté que le coulage permet la production de matériaux céramiques beaucoup plus homogènes. Une caractérisation mécanique préliminaire a été effectuée. Une caractérisation spectroscopique des poudres d'alumine-YAG, traités à basse et haute température, a été réalisée. Il a été mis en évidence que l'état d'hydratation des poudres varie avec la fonctionnalisation par les chlorures. La présence de sites Y sur la surface des poudres composites a été mise en évidence par XPS et à partir des spectres infrarouges (spectroscopie infrarouge par transformée de Fourier, FTIR) des échantillons soumis à des différentes pressions de monoxide de carbone (CO)
In this PhD study, Yttrium aluminum garnet (Y3Al5O12, YAG) powder was synthesised with several methods, i.e. spray drying, reaction synthesis and co-precipitation. The most promising synthesis method, i.e. co-precipitation, was optimized to obtain a pure phase, highly sinterable powder. The appropriate pre-sintering processing, i.e. calcination treatment, e fficient dispersion, homogeneous drying, were performed. YAG powder was dispersed with several methods, prior to sintering. Through Spark Plasma Sintering (SPS) a very fast assessment of the influence of the various treatments was performed. It was found that, for the synthesised powder, the dispersion method is crucial to obtain a high transparency. Due to the high sinterability of the powder and to the appropriate pre-sintering treatment, a low temperature SPS cycle was performed, and a fine-grained material was obtained. X-ray Photoelectron Spectroscopy (XPS) measurements were performed on YAG powder and on the sintered material, and several di fferences were evidenced. Some hypothesis were made to explain the observed di fferences, and some additional proofs to verify them were put forward. A composite Alumina-YAG-Zirconia powder was synthesized, starting from a commercial alumina powder, which was functionalised with Yttrium and Zirconium chlorides. The appropriate pre-sintering treatments were performed, comprising a low temperature calcination and a "fast" calcination, to favour the germination of small crystallites. Two shaping methods, i.e. slip casting and pressing, were performed. It was found that slip casting allows the production of much more homogeneous ceramic materials. A preliminary mechanical characterization was performed. A spectroscopic characterization of Alumina-YAG powders, heat-treated at low and high temperatures, was performed. It was evidenced that the hydration state of the powders changes with chlorides functionalization. The presence of Y sites on the surface of the composite powders was evidenced by X-ray Photoelectron Spectroscopy and from the di fference spectra of powdered samples subjected to various CO pressures
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SPINA, GIULIA. "Transparent YAG and composite ceramic materials in the system Alumina-YAG-Zirconia." Doctoral thesis, Politecnico di Torino, 2012. http://hdl.handle.net/11583/2502748.

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In this PhD study, Yttrium aluminum garnet (Y3 Al5 O12 , YAG) powder was synthesised with several methods, i.e. spray drying, reaction synthe- sis and co-precipitation. The most promising synthesis method, i.e. co- precipitation, was optimized to obtain a pure phase, highly sinterable pow- der. The appropriate pre-sintering processing, i.e. calcination treatment, efficient dispersion, homogeneous drying, were performed. YAG powder was dispersed with several methods, prior to sintering to transparency. Through Spark Plasma Sintering (SPS) a very fast assessment of the influence of the various treatments was performed. It was found that, for the synthesised powder, the dispersion method is crucial to obtain a high transparency. Due to the high sinterability of the powder and to the appro- priate pre-sintering treatment, a low temperature SPS cycle was performed, and a fine-grained material was obtained. X-ray Photoelectron Spectroscopy (XPS) measurements were performed on YAG powder and on the sintered material, and several differences were evidenced. Some hypothesis were made to explain the observed differences, and some additional proofs to verify them were put forward. A composite Alumina-YAG-Zirconia powder was synthesized, starting from a commercial alumina powder, which was functionalised with Yttrium and Zirconium chlorides. The appropriate pre-sintering treatments were performed, comprising a low temperature calcination and a ”fast” calcina- tion, to favour the germination of small crystallites. Two shaping methods, i.e. slip casting and pressing, were performed. It was found that slip cast- ing allows the production of much more homogeneous ceramic materials. A preliminary mechanical characterization of the composite was performed. A spectroscopic characterization of Alumina-YAG powders, heat-treated at low and high temperatures, was performed. It was evidenced that the hydration state of the powders changes with chlorides functionalization. The presence of Y sites on the surface of the composite powders was evidenced by X-ray Photoelectron Spectroscopy and from the difference spectra of powdered samples subjected to various CO pressures.
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Martial, Igor. "Systèmes laser pompés par diode à fibres cristallines : oscillateurs Er : yAG, amplificateurs Nd : yAG." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00705198.

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Au cours de cette thèse, nous nous intéressons à deux applications nécessitant des sources laser impulsionnelles : l'imagerie active et l'usinage laser. L'imagerie active nécessite des sources laser efficaces émettant dans la gamme de sécurité oculaire (entre 1,5 µm et 1,7 µm) à des cadence de l'ordre du kilohertz et produisant des énergies par impulsion de plusieurs millijoules. Les sources efficaces émettant dans la gamme de sécurité oculaire utilisent l'ion erbium. Cependant la structure électronique complexe de l'ion erbium entraîne de nombreux effets parasites qui limitent fortement l'énergie accessible lors d'un fonctionnement à haute cadence. Pour diminuer l'influence de ces effets parasites nous avons utilisé le concept de fibres cristallines dans le cadre d'une collaboration entre le Laboratoire Charles Fabry et l'entreprise Fibercryst. La géométrie des fibres cristallines, combinant les propriétés des cristaux massifs et les avantages des fibres en verre nous a permis de dépasser les limites des sources actuelles. L'usinage de matériaux requière des sources laser impulsionnelles émettant dans le proche infrarouge (1 µm) et alliant forte énergie, forte puissance crête et forte puissance moyenne. Pour réaliser de telles sources, il est nécessaire d'utiliser des milieux à gain permettant de limiter les phénomènes thermiques et les effets induit par la puissance crête (effets non-linéaires). Pour cela nous avons utilisé à nouveau le concept de fibre cristalline, dopée cette fois ci par l'ion néodyme. Ces fibres cristallines ont été utilisées comme amplificateur de puissance pour amplifier des micro-lasers fonctionnant à haute cadence (de 1 à 100 kHz) et produisant des impulsions courtes (< 1 ns).
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Cecchini, Silvia Cristina Mafra. ""Desinfecção da Dentina Radicular pela Irradiação dos Lasers de Nd: YAG e Er: YAG: um Modelo "in vitro""." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/23/23135/tde-30082001-094604/.

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RESUMO Desinfecção da dentina radicular pela irradiação dos lasers de ND:YAG, HO:YAG e ER:YAG: um modelo in vitro A provável causa do insucesso da terapia endodôntica é a persistência de microrganismos colonizando os túbulos dentinários. Para reduzir o risco de insucesso e, se possível, o tempo despendido no tratamento endodôntico, novos equipamentos e materiais são constantemente desenvolvidos. O objetivo desta investigação foi estudar o efeito da irradiação laser intracanal na desinfecção dos túbulos dentinários de dentes bovinos recém-extraídos, utilizando-se um modelo in vitro. Os grupos irradiados pelos vários lasers foram comparados ao tratamento com hidróxido de cálcio, freqüentemente utilizado como medicação intracanal. O cemento radicular foi removido, o canal preparado e os dentes, cortados, resultando em 180 corpos de prova padronizados. Para promover a colonização bacteriana, os corpos de prova foram incubados, a 37 o C, em frascos contendo caldo de tripticase de soja e Enterococcus faecalis, o qual continha um plasmídeo que permitiu o seu crescimento em um meio seletivo com cloranfenicol. Os corpos de prova foram divididos em cinco grupos experimentais e três grupos-controle. Para irradiação foram utilizados os lasers pulsados de: Ho:YAG a 2,1 µm; Nd:YAG (1,06 µm); e Er:YAG (2,94 µm) com e sem refrigeração ar/água. Os grupos tratados receberam três parâmetros diferentes de irradiação com cada tipo de laser: energia abaixo do limiar de modificação física (physical modification threshold - ½ do PMT) por 60s; no limiar (PMT) por 60s; e, acima do limiar (120s). O Grupo 5 recebeu sete dias de tratamento com hidróxido de cálcio. Como controles, três espécimes para cada grupo receberam água estéril (controle negativo), três receberam KI3, após exposição à bactéria (controle negativo) e três não receberam tratamento após exposição à bactéria (controle positivo). A quantidade de bactérias foi estimada mediante a contagem de unidades formadoras de colônias (u.f.c.). De modo a avaliar, paralelamente, se os comprimentos de onda laser utilizados no experimento poderiam ser absorvidos pelo E. faecalis, foram obtidos espectros de absorção no UV, VIS e IR, por meio de espectroscopia. A análise estatística mostrou uma redução bacteriana como segue: Ho:YAG > hidróxido de cálcio > Nd:YAG > Er:YAG com refrigeração ar/água > Er:YAG sem refrigeração ar/água. Houve uma significativa redução bacteriana no grupo irradiado pelo Ho:YAG no limiar de modificação – PMT (50 mJ, 10 Hz, 66 J/cm 2 , por 120s), seguida pelo Ho:YAG a 50 mJ, 10 Hz, 33J/cm 2 , por 60s e pelo grupo que recebeu hidróxido de cálcio. Os dois últimos grupos não apresentaram diferenças estatísticas significativas. O espectro de absorção pelas bactérias (E. faecalis) nas faixas dos comprimentos de onda do UV e VIS apresentou picos de absorção em 361 nm e em 377 nm (UV). Já o infravermelho próximo revelou uma baixa absorção pelo microrganismo testado.
SUMMARY Disinfection of intracanal dentin by Nd:YAG, Ho:YAG and Er:YAG laser irradiation: an in vitro model A possible cause for root canal failure is the persistence of bacteria that have colonized dentinal tubules. To reduce this risk and, if possible, to also shorten the time-consuming endodontic therapy, new equipment and materials are constantly being introduced. The aim of the present investigation was to study the effect of disinfection of dentinal tubules by intracanal laser irradiation using an in vitro model. The groups irradiated by various lasers were compared with calcium hydroxide, a material frequently used as intracanal medication between appointments. Freshly extracted, intact bovine incisors were used. The root cementum was removed and the teeth cut to produce 180 standardized specimens. For bacterial colonization, specimens were incubated at 37 o C in test tubes with Tryptic Soy Broth and Enterococcus faecalis, which carried a plasmid that allowed the growth in a selective medium containing chloramphenicol. The specimens were divided in five treatment groups and three control groups. For irradiation, pulsed delivered Ho:YAG laser at 2.1 µm, Nd:YAG laser (1.06 µm), and Er:YAG and Er:YAG laser (2.94µm) with and without air/water coolant, were used. Lasers groups received three different laser settings for treatment: output energy below the physical modification threshold (½ of PMT) for 60 sec, at the PMT for 60 sec and above the PMT (120 sec). Group 5 received a seven-day treatment with calcium hydroxide. As controls, three specimens for each treatment group received sterile water instead of bacteria (negative control), three received iodine potassium-iodide after bacterial exposure (negative control), and three did not receive treatment after bacterial exposure (positive control). The number of bacteria was estimated by counting CFU. In order to evaluate whether the lasers used in the experiment could be absorbed by the bacteria E. faecalis, an UV, VIS and NIR spectra were obtained using a spectrophotometer. Statistical analysis showed the bacterial reduction as follow: Ho:YAG laser > hidróxido de cálcio> Nd:YAG laser > Er:YAG laser with air/water coolant > Er:YAG laser without air/water coolant. There was a significantly higher bacterial reduction in the group irradiated by the Ho:YAG at the PMT (50mJ, 10 Hz, 66 J/cm 2 for 120 sec), followed by Ho:YAG irradiated at 50mJ, 10 Hz, 33 J/cm 2 for 60 sec, and the group that received calcium hydroxide. The latter two groups were not significantly different. The UV and VIS absorbance spectrum presented two absorbance peaks at 361nm and 337nm (UV). The NIR spectrum revealed a very low absorbance by the E. faecalis.
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Andersson, Martin, and Martin Svensson. "Nd YAG laser welding in Titanium-6242." Thesis, University West, Department of Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-764.

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Matthewson, Kenneth. "Studies on therapeutic neodymium YAG laser endoscopy." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241407.

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Badran, Zahi. "Utilisation du laser Er :YAG en parodontologie." Nantes, 2012. http://www.theses.fr/2012NANT33VS.

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La parodontite chronique est une maladie inflammatoire d'origine bactérienne. Elle se traduit par la perte d'attache et l'apparition d'hypersensibilités dentinaires, après exposition du cément radiculaire suite aux récessions gingivales. La prise en charge de cette pathologie repose sur une thérapeutique étiologique mécanique, qui est réalisée avec des inserts ultrasoniques ou des curettes manuelles. Depuis quelques années, le laser Er :YAG a été introduit comme alternative pour le traitement des parodontites chroniques, aussi bien au niveau du débridement radiculaire que pour le traitement de l'hypersensibilité dentinaire. Dans ce travail, nous avons voulu dans un premier temps, comparer le débridement laser au traitement mécanique conventionnel. Une étude clinique pilote a été menée dans le cadre d'un protocole de recherche clinique. Les résultats de cette étude montrent que le débridement au laser Er :YAG donne des résultats cliniques au moins similaires au surfaçage radiculaire manuel avec une supériorité en termes de gain d'attache clinique. Dans un second temps, nous avons voulu explorer l'action du laser Er :YAG sur l'hypersensibilité dentinaire. Une étude menée in vitro pour observer l'effet microscopique de ce laser sur les tubuli dentinaires exposés, a permis d'observer l'oblitération de ces derniers. Un cas clinique d'hypersensibilité traité par le laser a permis de confirmer ces résultats. Dans la limite des résultats de ce travail, nous pouvons conclure que le laser Er :YAG pourrait être une alternative intéressante dans le cadre de la prise en charge des parodontites chroniques
Chronic periodontitis is an inflammatory disease with an infectious bacterial etiology. One of its clinical manifestations is dentinal hypersensitivity after root cementum exposure. Its clinical management consists of implementing proper oral hygiene, then performing a mechanical cause-related therapy. The latter is realized using ultrasonic devices or manual curettes. Er:YAG laser debridement was introduced as a therapeutic tool for periodontal root debridement. We wanted to compare the latter to conventional mechanical scaling and root planning, in terms of clinical parameters. A pilot clinical study was carried at the CHU of Nantes. We found that both therapies lead to significant improvements of clinical periodontal parameters. No significant superiority between both modalities was found, except for clinical attachment level. On the other hand, Er:YAG laser was found to be capable of treating dentinal hypersensitivity. An in vitro study permitted te observe the microscopical obliteration of dentinal tubules after laser irradiation. A clinical case of dentinal hypersensitivity was also managed using the Er:YAG laser. Within the limit of the study, Er:YAG laser debridement could be an alternative to conventional mechanical therapy
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Bonati, Guido. "Integration von Diodenlasern in modulare Hochleistungs-Nd: YAG-Laser." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=965090531.

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Risse, Enrico. "Kontinuierlich angeregte und aktiv gütegeschaltete Oszillator-Verstärker-Systeme hoher Strahldichte durch Einsatz von Faser-Phasenkonjugatoren." [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969665881.

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Schöne, Wolfram. "Theoretische und experimentelle Untersuchung thermischer Effekte in diodengepumpten Hochleistungs-Nd:YAG-Stablasern." [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=954722914.

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Books on the topic "YAG"

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Tanẓīm-i Nasl-i Nau Hazārah Mug̲h̲ul (Quetta, Pakistan). Akādamī Hazāragī, ed. Yag tak̲h̲lī āvar. Koʼiṭah: Akādamī Hazārgī, Tanẓīm-i Nasl-i Nau Hazārah Mug̲h̲ul, 2013.

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Mun, Hyŏng-nyŏl. Chŏng Yag-yong. Sŏul: Kungmin Sŏgwan, 1992.

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YAG laser bronchoscopy. New York: Praeger, 1985.

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Ik-sŏng, Yi, ed. Chŏng Yag-yong. Sŏul: Hanʼgilsa, 1992.

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Chŏng Yag-yong. Sŏul: Koryo Taehakkyo Chʻulpʻanbu, 1990.

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Chŏng, Yag-yong. Chŏng Yag-yong chakpʻumjip. [Pʻyŏngyang]: Munye Chʻulpʻansa, 1990.

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Chŏng, Yag-yong. Chŏng Yag-yong chakpʻŭmjip. [Beijing]: Minjok Chʻulpʻansa, 1986.

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Chŏng, Yag-yong. Chŏng Yag-yong chakpʻumjip. [Pʻyŏngyang]: Munye Chʻulpʻansa, 1990.

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Chŏng, Yag-yong. Chŏng Yag-yong chakp'umjip. [Peking]: Minjok Ch'ulp'ansa, 1986.

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Ch'ŏr-hwa, Yi, and Yu Su, eds. Chŏng Yag-yong chakpʻumjip. [Pʻyŏngyang]: Munye Chʻulpʻansa, 1990.

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Book chapters on the topic "YAG"

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Morrison, Clyde Arthur. "Y3Al5O12 (YAG)." In Crystal Fields for Transition-Metal Ions in Laser Host Materials, 27–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-95686-7_3.

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Kardorff, Bernd. "Erbium: YAG-Laser." In Selbstzahlerleistungen in der Dermatologie und der ästhetischen Medizin, 147–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43427-7_14.

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Weik, Martin H. "YAG/LED source." In Computer Science and Communications Dictionary, 1939. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_21292.

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Ding, Jiaxi, and Hoon Jung. "Holmium YAG Laser, Thermokeratoplasty." In Encyclopedia of Ophthalmology, 1–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-35951-4_964-1.

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Heintzen, M. P., T. Neubaur, M. Klepzig, E. I. Richter, E. Zeitler, and B. E. Strauer. "Nd-YAG Laser Angioplasty." In Pros and Cons in PTA and Auxiliary Methods, 60–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/978-3-642-73736-7_8.

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Nathel, H., A. Sennaroglu, and C. R. Pollock. "Femtosecond Cr4+:YAG Laser." In Springer Series in Chemical Physics, 202–4. Berlin, Heidelberg: Springer Berlin Heidelberg, 1994. http://dx.doi.org/10.1007/978-3-642-85176-6_71.

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Ding, Jiaxi, and Hoon Jung. "Holmium YAG Laser, Thermokeratoplasty." In Encyclopedia of Ophthalmology, 874–77. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_964.

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Noda, Kunihiro, Ryo Asakura, Tetsuhiko Isobe, Masahito Morita, Kiyoshi Kurokawa, Toshiro Inubushi, Tomohiro Takagi, and Michio Ohkubo. "Glycothermal Synthesis and Magnetic Properties of YIG/YAG Nanoparticles." In Solid State Phenomena, 863–66. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-31-0.863.

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Nguyen, Martin, and Gerald Messer. "Neodym-YAG-Lasertherapie der Onychomykose." In Selbstzahlerleistungen in der Dermatologie und der ästhetischen Medizin, 251–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43427-7_23.

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Kunzelmann, Volker. "Erbium-YAG-Lasertherapie der Onychomykose." In Selbstzahlerleistungen in der Dermatologie und der ästhetischen Medizin, 279–84. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-43427-7_26.

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Conference papers on the topic "YAG"

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McRoy, Susan W., Songsak Channarukul, and Syed S. Ali. "YAG." In the first international conference. Morristown, NJ, USA: Association for Computational Linguistics, 2000. http://dx.doi.org/10.3115/1118253.1118293.

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Barnes, Norman P., and Brian M. Walsh. "Quantum efficiency measurements of Nd: YAG, Yb: YAG, and Tm: YAG." In Advanced Solid State Lasers. Washington, D.C.: OSA, 2002. http://dx.doi.org/10.1364/assl.2002.tub15.

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Yan, Renpeng, Wentao Wu, Xudong Li, Deying Chen, and Zhongxiang Zhou. "LD pumped YAG/Nd:YAG/Cr4+:YAG burst mode laser." In Fifth International Symposium on Laser Interaction with Matter, edited by YiJun Zhao. SPIE, 2019. http://dx.doi.org/10.1117/12.2522842.

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Llewellyn, Steven, David A. Belforte, and Morris R. Levitt. "YAG Laser Market." In Medical Imaging. SPIE, 1989. http://dx.doi.org/10.1117/12.971028.

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Ma, Yufei, Xudong Li, Lin Ge, Jiang Li, Renpeng Yan, Xin Yu, and Rui Sun. "Comparison between tape casting YAG/Nd:YAG/YAG and Nd:YAG ceramic lasers." In 2017 Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR). IEEE, 2017. http://dx.doi.org/10.1109/cleopr.2017.8118599.

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Kim, Hyunjun, Randall S. Hay, Kent L. Averett, Daniel J. Gibson, Andrew P. Schlup, John W. Drazin, Benjamin A. Gray, et al. "Applications of Polycrystalline YAG for LHPG Single Crystal YAG Fiber Lasers." In Advanced Solid State Lasers. Washington, D.C.: Optica Publishing Group, 2022. http://dx.doi.org/10.1364/assl.2022.jm4a.3.

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Owens, Patricia A. "Holmium: YAG laser safety." In ILSC® ‘92: Proceedings of the International Laser Safety Conference. Laser Institute of America, 1992. http://dx.doi.org/10.2351/1.5056353.

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Jelinkova, Helena, Jiri Pasta, Jan Sulc, Michal Nemec, Mitsunobu Miyagi, Yi-Wei Shi, and Yuji Matsuura. "YAG laser in ophthalmology." In Laser Florence 2001: a Window on the Laser Medicine World, edited by Leonardo Longo, Alfons G. Hofstetter, Mihail-Lucian Pascu, and Wilhelm R. A. Waidelich. SPIE, 2002. http://dx.doi.org/10.1117/12.486631.

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Nathel, Howard, Alphan Sennaroglu, and Clifford R. Pollock. "Femtosecond, Cr4+:YAG laser." In International Conference on Ultrafast Phenomena. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/up.1994.wc.22.

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Recent advances in mode-locked solid-state lasers have resulted in pulses as short as 8.5 fs in the 800 nm region from Ti:sapphire oscillators [1]. Using similar techniques, sub-50 fs pulses [2-4] have been generated in another solid-state laser system, Cr:forsterite, which operates in the 1.2 to 1.3 μm range. We report here results from both a regeneratively-initiated and self-initiated, mode-locked Cr:YAG laser [5] which is tunable from 1.51 to 1.53 μm. One hundred and twenty femtsosecond, nearly transform-limited pulses have been generated with peak output powers of 45 kW. The stable, high peak power pulses and room temperature operation of this laser make it a very suitable alternative to the cumbersome, cryogenic mode-locked NaCl laser [6] commonly used in both narrow bandgap semiconductor and optical communications research.
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Zandi, Bahram, John B. Gruber, Dhiraj K. Sardar, and Toomas H. Allik. "Modeling of Er in ceramic YAG and comparison with single-crystal YAG." In Defense and Security, edited by Gary L. Wood. SPIE, 2005. http://dx.doi.org/10.1117/12.602938.

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Reports on the topic "YAG"

1

Collins, Joseph M. 75 Micron YAG-Alumina Eutectic Fiber. Fort Belvoir, VA: Defense Technical Information Center, January 1999. http://dx.doi.org/10.21236/ada360276.

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Dereskiewicz, J. Microwave module YAG laser weld development. Office of Scientific and Technical Information (OSTI), July 1991. http://dx.doi.org/10.2172/5409301.

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Seletskiy, S., P. Thieberger, and T. Miller. Can YAG screen accept LEReC bunch train? Office of Scientific and Technical Information (OSTI), May 2016. http://dx.doi.org/10.2172/1257957.

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Chen, Da-Wun, Todd S. Rose, Steven M. Beck, and Milton Birnbaum. High-Performance 1645-nm Er: YAG Laser. Fort Belvoir, VA: Defense Technical Information Center, September 2007. http://dx.doi.org/10.21236/ada473767.

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Wuerker, Ralph F. Yag Pumped Dye Laser for the HIPAS Arctic Lidar. Fort Belvoir, VA: Defense Technical Information Center, September 1997. http://dx.doi.org/10.21236/ada628460.

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Holdren. L51934 Feasibility of Nd-Yag Laser-Arc Welding Processes for Girth Welding. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2002. http://dx.doi.org/10.55274/r0010632.

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Laser beam welding (LBW) has become standard in many high-production and critical applications where the return on investment can be quickly realized due to the process' inherent efficiency in terms of weld penetration and travel speed. Also, some promising work has been done internationally related to the use of hybrid laser/arc welding (HLAW) for some applications (primarily shipbuilding), so this process variation was also included in the study. However, virtually all of the current LBW or HLAW applications are considered 'factory' applications, and therefore do not represent the logistical challenge associated with bringing laser technology to on or offshore pipeline welding operations. This project was aimed at studying the feasibility of overcoming those logistical challenges in order to realize the potential cost savings of applying this high production process. This study was limited to the application of Nd:YAG lasers (which can be delivered via fiber-optic cable) since the logistics of incorporating higher power CO2 lasers was felt to be impractical. The focus of the project was to study the potential productivity of the LBW and HLAW processes in terms of the thickness of material that could be welded in a single pass at a given travel speed. Additionally, the robustness of the process was determined using weld joints with less than ideal fit up. Potential feasibility of the processes were then determined by considering both the practical aspects of their application as well as the economic justification.
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Merkle, Larry D., Nikolay Ter-Gabrielyan, G. Alex Newburgh, Arockiasamy Michael, and Mark Dubinskii. Temperature Dependence of a Diode-pumped Cryogenic Erbium (Er):Yttrium Aluminum Garnet (YAG) Laser. Fort Belvoir, VA: Defense Technical Information Center, July 2009. http://dx.doi.org/10.21236/ada502448.

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Fried, Nathaniel M. Erbium: YAG Laser Incision of Urethral Strictures for Treatment of Urinary Incontinence After Prostate Cancer Surgery. Fort Belvoir, VA: Defense Technical Information Center, February 2005. http://dx.doi.org/10.21236/ada433865.

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Adams, J. T., and J. J. Kwiatkowski. Nd-YAG laser welding of the fiber optic connector to the header shell on the 2SL actuator. Office of Scientific and Technical Information (OSTI), January 1994. http://dx.doi.org/10.2172/10122837.

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Palmer, T. A., B. Wood, J. W. Elmer, C. Westrich, J. O. Milewski, M. Piltch, M. Barbe, and R. Carpenter. Characterization of Stainless Steel and Refractory Metal Welds Made using a Diode-Pumped, Continuous Wave Nd: Yag Laser. Office of Scientific and Technical Information (OSTI), October 2001. http://dx.doi.org/10.2172/15005683.

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