Academic literature on the topic 'Crytals'

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Journal articles on the topic "Crytals"

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Mishina, Tomobumi, and Yasuaki Masumoto. "Quantum beats in monoclinic ZnP2 crytals." Journal of Luminescence 58, no. 1-6 (January 1994): 82–84. http://dx.doi.org/10.1016/0022-2313(94)90366-2.

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CRAWFORD, GREGORY P., and SLOBODAN ŽUMER. "SADDLE-SPLAY ELASTICITY IN NEMATIC LIQUID CRYTALS." International Journal of Modern Physics B 09, no. 18n19 (August 30, 1995): 2469–514. http://dx.doi.org/10.1142/s021797929500094x.

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The effect of the saddle-splay elastic constant K24 on nematic director-fields is a topic of fundamental interest for the elastic theory of liquid crystals and plays a vital role in device applications where nematic liquid crystals are confined to a curved geometry. The first measurement of K24 came more than sixty years after the pioneering work of Oseen, who made first steps toward the elastic theory of liquid crystals. Today the study of saddle-splay elasticity has become an important topic in liquid crystal physics. In this review we summarize the various methods used to measure K24 in curved geometries and present the detailed theory behind the measurements.
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Galatola, P., and M. Rajteri. "Critical-noise measurement near Fréedericksz transitions in nematic liquid crytals." Physical Review E 49, no. 1 (January 1, 1994): 623–28. http://dx.doi.org/10.1103/physreve.49.623.

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Chang, Jiann-Min, A. K. Batra, and R. B. Lal. "Growth and properties of urea-doped triglycine sulfate (UrTGS) crytals." Journal of Crystal Growth 158, no. 3 (January 1996): 284–88. http://dx.doi.org/10.1016/0022-0248(95)00448-3.

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Yu, Xiao Ling, Xue Bin Li, Liang Zhao, Han Jun Ma, and Guang Hong Zhou. "Using NMR to Forecast the Aptness for Freezing of Pork." Key Engineering Materials 460-461 (January 2011): 225–30. http://dx.doi.org/10.4028/www.scientific.net/kem.460-461.225.

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NMR was used to investigate the chemical shift graphs of fresh pork at different time postmortem, and at the same time the ice crystals of meat freezing at different time postmortem were researched with SEM. The results showed there were significant (P<0.05)correlation between distribution and size of ice crytals freezing at different time postmortem and the chemical shift graphs of fresh pork at different time postmortem different. Using chemical shift graphs of meat could forecast whether the meat was suitable for frozen processing, and also could forecast the water holding capacity of it.
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Kiang, Jademond, and Liyong Tong. "Modelling of magneto-mechanical behaviour of Ni–Mn–Ga single crytals." Journal of Magnetism and Magnetic Materials 292 (April 2005): 394–412. http://dx.doi.org/10.1016/j.jmmm.2004.11.481.

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Alekseev, M. A., I. Ya Karlik, I. A. Merkulov, D. N. Mirlin, and V. F. Sapega. "Hot photoluminescence and valence band warping in GaAs and InP crytals." Physics Letters A 127, no. 6-7 (March 1988): 373–78. http://dx.doi.org/10.1016/0375-9601(88)90589-0.

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Zieliński, P., and K. Żabińska. "On the dynamics of the orientationally disordered ionic crytals in two dimensions." Zeitschrift für Physik B Condensed Matter 66, no. 3 (September 1987): 345–53. http://dx.doi.org/10.1007/bf01305425.

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Zhang hui-qi,Jiang Zheng-sheng,Xu You. "QUANTUM THEORY FOR FARADAY EFFECT AND IT’S TEMPERATURE DEPENDCE IN PARAMAGNETIC CeF_3_ CRYTALS." Acta Physica Sinica 40, no. 7 (1991): 1193. http://dx.doi.org/10.7498/aps.40.1193.

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ZHANG HUI-QI, JIANG ZHENG-SHENG, XU YOU, DUAN MING-QIAN, and YANG GUI-LIN. "QUANTUM THEORY FOR FARADAY EFFECT AND IT'S TEMPERATURE DEPENDCE IN PARAMAGNETIC CeF3 CRYTALS." Acta Physica Sinica 42, no. 7 (1993): 1193. http://dx.doi.org/10.7498/aps.42.1193.

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Dissertations / Theses on the topic "Crytals"

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Harris, Jonathan Blair. "Modelling the optical response of multilayered gratings containing liquid crytals." Thesis, University of Exeter, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337766.

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Norwood, Fiona Lucinda Margaret. "Biochemical and structural studies on the actin binding N-terminal domain of the dystrophin protein." Thesis, King's College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314010.

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Keheze, Fanuel Mugwanga [Verfasser], and Günter [Akademischer Betreuer] Reiter. "Optical studies on indicators of order and disorder in films and crytals of a bulky substituted polythiophene." Freiburg : Universität, 2018. http://d-nb.info/1156532922/34.

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Lin, Xiaodan, and 林曉丹. "Morphology and structure development of a PET/PP blend in extrusion, solid-state drawing and annealing." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31240598.

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Ayed, Yessine. "Approches expérimentales et numériques de l’usinage assisté jet d'eau haute pression : étude des mécanismes d'usure et contribution à la modélisation multi-physiques de la coupe." Thesis, Paris, ENSAM, 2013. http://www.theses.fr/2013ENAM0056/document.

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Cette étude porte sur l'usinage de l'alliage de titane Ti17 avec une assistance jet d'eau haute pression. Une attention particulière a été portée à l'analyse des mécanismes de dégradation et d'usure des outils lors de l'usinage avec et sans assistance. Le suivi de l'usure est réalisé par des observations régulières au microscope électronique à balayage (MEB) et par des analyses chimiques (technique EDS) afin de déterminer les zones de dépôt de matière sur l'outil. Toutes ces observations ont permis d'expliquer les mécanismes d'usure pour une opération d'ébauche et de finition. Il a été montré que les mécanismes d'usure sont différents entre l'usinage conventionnel et l'usinage assisté. En effet, lors de l'assistance jet d'eau haute pression, certains mécanismes ne sont plus activités mais d'autres mécanismes sont accélérés. Il existe donc une pression de jet d'eau optimale pour minimiser l'usure de l'outil.Afin de mettre en évidence l'effet du jet d'eau sur les phénomènes thermomécaniques dans les zones de formation du copeau, une modélisation par éléments finis est réalisée. Un couplage fluide / structure a dû être mis en place afin de prendre en compte les actions mécaniques et thermiques du jet d'eau sur la zone de coupe. Pour cela, la loi de comportement et le modèle d'endommagement de Johnson-Cook, ont été identifiés pour le Ti17 dans des conditions extrêmes sur une large gamme de températures et de vitesses de déformation. Cette modélisation a permis de mettre en évidence, pour l'usinage assisté haute pression, la diminution de la zone de contact outil/copeau, de retrouver la fragmentation du copeau et de quantifier le refroidissement des différentes zones de cisaillement.En revanche, cette modélisation ne permet pas de connaître l'effet de l'hétérogénéité microstructurale du matériau sur la zone de coupe. Ce constat est d'autant plus important que le matériau étudié présente une taille de grain importante (de l'ordre du millimètre). Pour cela, une nouvelle modélisation (multi-échelle) a été développée afin de prendre en compte la microstructure du matériau. Le matériau est donc modélisé comme un polycristal qui prend en compte des lois de la plasticité cristalline. Cette nouvelle approche permet alors de simuler la formation du copeau en prenant en compte les orientations cristallines des grains et les changements de phase qui apparaissent lors de l'usinage
This study focuses on the machining of the Ti17 titanium alloy using high-pressure water jet assistance. Special emphasis is placed on the analysis of degradation mechanisms and tool wear during machining, with and without assistance. Wear monitoring was achieved by regular observations using both scanning electron microscope (SEM) and chemical analysis (EDS technique) to determine the areas of material deposition on the tool. These observations made it possible to explain the wear mechanisms for roughing and finishing conditions. Wear mechanisms for conventional machining and for assisted machining were found to be significantly different. Indeed, with high-pressure water jet assistance, some tool wear mechanisms are no longer activated, whereas others are accelerated. Hence, there exists an optimum water jet pressure which minimizes tool wear.To highlight the effect of water jet assistance on the thermomechanical phenomena in the chip formation zone, finite-element modeling has been performed. Fluid/structure coupling was developed to take into account the mechanical and thermal effects of the water jet. For this to be possible, the Johnson-Cook constitutive law and damage model have been identified for the Ti17 titanium alloy, under extreme conditions, over a wide range of temperatures and strain rates. This modeling has highlighted the fact that, for high-pressure assisted machining, the tool/chip contact zone is reduced. In addition, the simulation of chip fragmentation as well as the cooling effect on the tool and workpiece is possible.However, this model does not shed light on the effect of the microstructural heterogeneity of the material in the cutting zone. This is an important observation because the material studied has a very large grain size (of the order of a millimeter). For this reason, a new (multi-scale) modeling approach has been developed to take into consideration the microstructure of the material. The material is subsequently modeled as a polycrystal which obeys crystal plasticity constitutive laws. This new approach is then used to simulate chip formation, taking into account the grain orientations and phase changes that occur during the machining process
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Солодін, С. В., О. В. Копач, Анатолій Сергійович Опанасюк, Анатолий Сергеевич Опанасюк, Anatolii Serhiiovych Opanasiuk, and П. М. Фочук. "Міграція включень в кристалах Cd(Mn)Te." Thesis, Сумський державний університет, 2016. http://essuir.sumdu.edu.ua/handle/123456789/46190.

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Кристали Cd(Mn)Te позиціонуються як можлива альтернатива кристалам Cd(Zn)Te, що знайшли широке застосування як детектори іонізуючого випромінювання. В даних кристалах з Mn можливо досягти більш однорідного розподілу мангану по кристалу, оскільки коефіцієнт сегрегації Mn в CdTe близький до 1. Це дозволяє підвищити вихід матеріалу з потрібними і відтворюваними електричними характеристиками. Включення другої фази є небажаними структурними недосконалостями в детекторах. Одним з можливих способів їх усунення - це їх міграція у полі температурного градієнту. Тому було вирішено дослідити можливість застосування цього явища і для очистки кристалів Cd(Mn)Te.
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Liu, Shin Maw, and 劉新茂. "Computer Simulation of Liquid Crytal in Electric Field." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/87094140357127255136.

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Lin, Yi-Jen, and 林宜蓁. "Research on the Plays Adapted from Hsein-Yung Pai's Novel "Crytsal Boys" by Jui-Yuan Tsao." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/b6wc5a.

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Books on the topic "Crytals"

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Barnitz, LaTrobe. Soul Crytals the Mask of Tragedy. Private Dragon, 2021.

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Barnitz, LaTrobe. Soul Crytals the Mask of Tragedy. Private Dragon, 2021.

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Vij, Jagdish K. Advances in Liquid Crytals: A Special Volume of Advances in Chemical Physics. Wiley-Interscience, 2000.

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Wang, Delia, Amber Raven, and Archmonoth V2. Crytsal Sun. Independently Published, 2019.

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Kuleyev, Igor Gaynitdinovich, Ivan Igorevich Kuleyev, Sergey Mikhailovich Bakharev, and Vladimir Vasilyevich Ustinov. Phonon Focusing and Phonon Transport: In Single-Crytal Nanostructures. de Gruyter GmbH, Walter, 2020.

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Kuleyev, Igor Gaynitdinovich, Ivan Igorevich Kuleyev, Sergey Mikhailovich Bakharev, and Vladimir Vasilyevich Ustinov. Phonon Focusing and Phonon Transport: In Single-Crytal Nanostructures. de Gruyter GmbH, Walter, 2020.

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Kuleyev, Igor Gaynitdinovich, Ivan Igorevich Kuleyev, Sergey Mikhailovich Bakharev, and Vladimir Vasilyevich Ustinov. Phonon Focusing and Phonon Transport: In Single-Crytal Nanostructures. de Gruyter GmbH, Walter, 2020.

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Hobbs, Jerry. One Man With Courage: The Wayne Cryts Story. iUniverse, Inc., 2005.

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Hobbs, Jerry. One Man With Courage: The Wayne Cryts Story. iUniverse, Inc., 2005.

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Book chapters on the topic "Crytals"

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Tomizawa, K., K. Sassa, Y. Shimanuki, and J. Nishizawa. "Dislocations in GaAs Crytals Grown by As-Pressure Controlled Czochralski Method." In Defects and Properties of Semiconductors, 25–36. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4766-5_2.

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CRAWFORD, GREGORY P., and SLOBODAN ŽUMER. "SADDLE-SPLAY ELASTICITY IN NEMATIC LIQUID CRYTALS." In Liquid Crystals in the Nineties and Beyond, 331–76. WORLD SCIENTIFIC, 1996. http://dx.doi.org/10.1142/9789812831101_0010.

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Conference papers on the topic "Crytals"

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Zhivkova, Svetla, and Margarita Miteva. "Image Subtraction by Holographic Storage in Photorefractive BTO Crytals." In Holography '89, edited by Yuri N. Denisyuk and Tung H. Jeong. SPIE, 1990. http://dx.doi.org/10.1117/12.963819.

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Gunyakov, V. A., S. A. Myslivets, V. P. Gerasimov, V. G. Arkhipkin, V. Y. Zyryanov, V. F. Shabanov, S. Y. Vetrov, G. N. Kamaev, and A. V. Shabanov. "Control of transmission spectra of planar photonic crytal with LC defect." In SPIE Proceedings, edited by Oleg N. Krokhin and Igor N. Kompanets. SPIE, 2007. http://dx.doi.org/10.1117/12.742890.

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Haifeng Wang, Terry B. Huff, and Ji-Xin Cheng. "Coherent anti-Stokes Raman scattering imaging with photonic crytal fiber delivered laser source." In 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference. IEEE, 2006. http://dx.doi.org/10.1109/cleo.2006.4627716.

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Chen, Tao, Ping Chen, Harry Montgomerie, Thomas Hagen, Ronald Benvie, Qi Guo, Uche Anyanwu, Bo Xu, and Xu Yang. "Do We Need Higher Dose Scale Inhibitors to Inhibit Scale under Turbulent Conditions? Insight into Mechanisms and New Test Methodology." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169780-ms.

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Abstract Turbulent flow, especially around chokes, downhole safety valves and inflow control devices, favors scale deposition potentially leading to severe loss of production. Recently, scale formation under turbulent conditions has been studied and progressed, focused on the bulk precipitation (SPE164070) and a small bore valve loop test (SPE 155428). However, bulk precipitation is not fully representative the surface deposition in the fields and the Reynolds number of modified loop is unknown. The relationship between a measured Reynolds number and surface deposition up until this study has not been addressed. A newly developed test methodology with rotating cylinder has been applied to generate high shear rate and evaluate surface deposition with Reynolds numbers up to ~41000. The relationship between Reynolds number and surface deposition is addressed. Using this highly representable test method for BaSO4 scale deposition, several different generic types of inhibitor chemistries, including polymers and phosphonates, were assessed under different levels of turbulence to evaluate their performance on surface deposition. The results showed it is not always true that higher turbulence results in higher dose of inhibitor being required to control scale. It is inhibitor chemistry and mechanisms dependent. The scale inhibitorscan be classified as three types when evaluating the trend of mass deposition versus Reynolds number and the morphology of the crystals deposited on the metal surface. ➢ Type 1: Crytal growth inhibitors. The mass of surface deposition increases with the increase of turbulence, along with smaller crystals.➢ Type 2: Dispersion and crystal growth inhibitor. The higher the turbulence, the less mass deposition, along with smaller crystals.➢ Type 3: Dispersion scale inhibitors. The higher the turbulence, the less mass deposition. The size of the crystals has no major change. This paper gives a comprehensive study of the effect of flow condition on the scale surface deposition and inhibition mechanisms. In addition, it details how this methodology and new environmentally acceptable inhibitor chemistry can be coupled to develop a chemical technology toolbox that also includes techniques for advanced scale inhibitor analysis and improved scale inhibitor retention, to design optimum scale squeeze packages for the harsh scaling conditions associated with turbulent flow conditions.
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