Relevant bibliographies by topics / Quarts rotatifs

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers
  5. Reports

Academic literature on the topic 'Quarts rotatifs'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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Journal articles on the topic "Quarts rotatifs"

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Grundy, Anne, Michelle Cotterchio, Victoria A. Kirsh, Victoria Nadalin, Nancy Lightfoot, and Nancy Kreiger. "Association entre le travail par quarts et l’obésité chez les hommes dans le nord-est de l’Ontario." Promotion de la santé et prévention des maladies chroniques au Canada 37, no. 8 (August 2017): 261–71. http://dx.doi.org/10.24095/hpcdp.37.8.02f.

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Introduction Même si certaines études suggèrent une association entre le travail par quarts et l’obésité, peu sont fondées sur la population ou tiennent compte de divers horaires de travail par quarts. L’obésité étant associée à plusieurs problèmes de santé chroniques, il est important de comprendre quelles formes de travail par quarts ont une incidence sur elle et d’effectuer des travaux permettant d’évaluer de façon plus détaillée l’exposition au travail par quarts. Méthodologie Au moyen d’une régression logistique polytomique multivariée, nous avons étudié l’association entre le travail par quarts (de soir ou nuit, par quarts ou autre type de rotation) et le surpoids et l’obésité, en fonction d’une mesure transversale de l’indice de masse corporelle chez 1 561 hommes. Ces hommes avaient déjà servi de témoins dans une étude cas-témoins sur le cancer de la prostate menée dans le nord-est de l’Ontario de 1995 à 1999. Nous avons obtenu l’information sur leurs antécédents de travail (notamment sur le travail par quarts), leur taille et leur poids à partir de données autodéclarées recueillies par questionnaire. Résultats Nous avons observé une association entre le fait d’avoir déjà travaillé par quarts (par opposition au fait de n’avoir jamais travaillé par quarts) et le surpoids (RC [rapport de cotes] = 1,34; IC [intervalle de confiance] à 95 % : 1,05 à 1,73) ainsi que l’obésité (RC = 1,57; IC à 95 % : 1,12 à 2,21). Nous avons également observé des associations statistiquement non significatives avec le fait d’avoir déjà travaillé (par opposition au fait de n’avoir jamais travaillé) de façon permanente selon un quart de soir ou de nuit. Nous avons par ailleurs observé une tendance à la hausse statistiquement significative en ce qui concerne le risque de surpoids et d’obésité en fonction de la durée du travail par quarts. Conclusion Tant l’association positive observée entre le travail par quarts et l’obésité que l’association positive suggérée dans notre étude en ce qui concerne le travail permanent selon un quart de soir ou nuit concordent avec ce qui a été observé antérieurement. D’autres études en population tenant compte de nos résultats seront à mener pour examiner d’autres caractéristiques du travail par quarts, afin de mieux déterminer si certains types de travail par quarts ont une plus grande incidence sur l’obésité que d’autres.
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Wells, Stephen, Martin Dove, and Matthew Tucker. "Reverse Monte Carlo with geometric analysis – RMC+GA." Journal of Applied Crystallography 37, no. 4 (July 17, 2004): 536–44. http://dx.doi.org/10.1107/s0021889804008957.

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An analysis of simulated framework structures based on the rigid-unit model quantifies the distortion of polyhedra from their ideal geometric forms and decomposes the motions of the structure into components of rigid-unit displacement, rigid-unit rotation and distortion. Case studies analysing the behaviour of quartz and of other silicates demonstrate that the method provides a novel way of extracting information from reverse Monte Carlo simulations. A program calledGASPhas been developed to perform this analysis and is freely available to researchers. Rotations are handled using the rotor method of geometric algebra.
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BORDES, JOSÉ, HONG-MO CHAN, and SHEUNG TSUN TSOU. "A SOLUTION TO THE STRONG CP PROBLEM TRANSFORMING THE THETA ANGLE TO THE KM CP-VIOLATING PHASE." International Journal of Modern Physics A 25, no. 32 (December 30, 2010): 5897–911. http://dx.doi.org/10.1142/s0217751x10051165.

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It is shown that in the scheme with a rotating fermion mass matrix (i.e. one with a scale-dependent orientation in generation space) suggested earlier for explaining fermion mixing and mass hierarchy, the theta angle term in the QCD action of topological origin can be eliminated by chiral transformations, while giving still nonzero masses to all quarks. Instead, the effects of such transformations get transmitted by the rotation to the CKM matrix as the KM phase giving, for θ of order unity, a Jarlskog invariant typically of order 10-5, as experimentally observed. Strong and weak CP violations appear then as just two facets of the same phenomenon.
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Wheeler, John, Zhenting Jiang, David J. Prior, and Jan Tullis. "Dynamic Recrystallisation of Quartz." Materials Science Forum 467-470 (October 2004): 1243–50. http://dx.doi.org/10.4028/www.scientific.net/msf.467-470.1243.

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It is generally agreed that the driving force (plastic strain energy) is much too small to allow "classical" nucleation during static and dynamic recrystallisation, and that rotation/growth of subgrains is an alternative. The latter explanation predicts that new grains should begin at low angles to old grains. We have used electron backscatter diffraction on an experimentally deformed quartz polycrystal that has deformed by dislocation creep and partially recrystallised. In a region shortened by about 30% new grains are at high angles (much greater than 15º) to adjacent parent grains. A histogram of misorientation versus number of boundaries shows a gap at 15-20º. In its simple form we expect the subgrain rotation model to predict a spectrum of misorientations but with most of them being low angle. Instead, the histogram suggests that new boundaries began life as high-angle structures, so current models for deformation-induced nucleation require refinement.
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Kong, Yong, Yuming Wang, Liping Zhang, and Yiyuan Fang. "Off-axis transmission spectrum of quartz rotation filter." Optik 124, no. 12 (June 2013): 1128–31. http://dx.doi.org/10.1016/j.ijleo.2012.03.020.

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ANTUNES, ANTONIO CARLOS BAPTISTA, and LEILA JORGE ANTUNES. "DIQUARK FORMATION IN ANGULAR-MOMENTUM-EXCITED BARYONS." International Journal of Modern Physics A 24, no. 10 (April 20, 2009): 1987–94. http://dx.doi.org/10.1142/s0217751x09043249.

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Diquarks, or metastable clusters of two quarks inside baryons, are shown to be produced by angular momentum excitation. In baryons with a light quark and two heavy quarks with large angular momentum (L>2), the centrifugal barrier that appears in the rotation frame of the two heavy quarks prevents the light quark from passing freely between the two heavy quarks. The light quark must tunnelize through this potential barrier, which gives rise to the clusters of a light and a heavy quark.
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Bychkov, Igor V., Dmitry A. Kuzmin, V. A. Tolkachev, Hyoung In Lee, and Vladimir G. Shavrov. "Magnetic Speckle-Pattern Rotation in Gyrotropic Low-Mode Optical Fiber Coated by Conductive Nanoshell." Materials Science Forum 845 (March 2016): 207–10. http://dx.doi.org/10.4028/www.scientific.net/msf.845.207.

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We have investigated theoretically the possibility of control of magnetic speckle-pattern rotation in gyrotropic optical fiber coated by conductive nanoshell. Investigation has been carried out for graphene and silver coated fibers. In graphene-coated fiber speckle-pattern rotation may be tuned by both magnetic field and chemical potential of graphene. It is shown that fiber coating by conductive nanoshell may leads to suppression of magnetic speckle-pattern rotation even for low-gyrotropic quartz fiber.
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Shirtcliffe, N. "Deposition of clays onto a rotating, electrochemical, quartz crystal microbalance." Colloids and Surfaces A: Physicochemical and Engineering Aspects 155, no. 2-3 (September 1999): 277–85. http://dx.doi.org/10.1016/s0927-7757(98)00915-7.

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Fueten, F., and J. S. Goodchild. "Quartz c-axes orientation determination using the rotating polarizer microscope." Journal of Structural Geology 23, no. 6-7 (June 2001): 895–902. http://dx.doi.org/10.1016/s0191-8141(00)00161-9.

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Vearncombe, J. R. "Structure of veins in a gold–pyrite deposit in banded iron formation, Amalia greenstone belt, South Africa." Geological Magazine 123, no. 6 (November 1986): 601–9. http://dx.doi.org/10.1017/s0016756800024110.

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AbstractFibrous quartz veins in deformed banded iron formation of the Amalia greenstone belt, southwestern Transvaal, are spatially related to gold–pyrite mineralization in both wallrock and vein inclusions. Poles to quartz vein orientations show a general parallelism with mineral elongation and fold plunges of the principal deformation in the wallrock. Quartz vein fibres show a consistent anticlockwise rotation, late components being subparallel to the elongation lineation, suggesting veining was probably synchronous with the principal deformation. Antitaxial fibrous veins, which dominate the mineralized banded iron formation, formed by the process of crack–seal which channelled mineralizing fluids along the vein walls, increasing the potential for fluid–wallrock interaction. Gold mineralization in quartz veins occurs in wall-parallel slivers of banded iron formation which have been plucked off the vein wall during antitaxial fibre growth. Mineralization can be explained by a process of fluid–wallrock interaction with sulphidation and gold precipitation.
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Dissertations / Theses on the topic "Quarts rotatifs"

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Shirtcliffe, Neil James. "The application of a rotating quartz crystal microbalance to the investigation of clay colloid heterocoagulation." Thesis, Imperial College London, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267747.

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Torikai, Delson. "Estudos experimentais de um processo de moagem de lascas de quartzo em moinho de bolas rotativo a seco e as caracteristicas de fusão em quartz glass." [s.n.], 1990. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264770.

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Orientador: Carlos Keniki Suzuki
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
Made available in DSpace on 2018-07-16T01:48:01Z (GMT). No. of bitstreams: 1 Torikai_Delson_M.pdf: 8784831 bytes, checksum: 739d3e4380d02708912be357be5a001f (MD5) Previous issue date: 1990
Resumo: Atualmente, o Quartzo é uma das matérias-primas mais importantes em alta tecnologia, principalmente nas áreas da micro-eletrônica (obtenção de osciladores, controladores de frequência, fillers, etc.), da telecomunicação (fibras ópticas, filtros ópticos, etc, e como material estrutural (na composição de materiais cerâmicas, barras, tubos e placas de quartz glass, etc,) . O Brasil é detentor de cerca de 90% das reservas mundiais do quartzo de boa qualidade e se caracteriza como exportador primário dessa matéria-prima, sem qualquer processo de beneficiamento. O trabalho desenvolvido nesta tese discutem alguns pontos básicos, do ponto de vista tecnológico, de dois processos de beneficiamento do quartzo: 1) o processo de moagem do quartzo para obtenção do pó e 2) o processo de fusão em quartz glass pelo método de Verneuil...Observação: O resumo, na íntegra, poderá ser visualizado no texto completo da tese digital
Abstract: Not informed.
Mestrado
Mestre em Engenharia Mecânica
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Fournier, Julie. "L'effet de l'horaire de travail par quarts rotatifs sur la détresse psychologique : une étude longitudinale." Thèse, 2007. http://hdl.handle.net/1866/1556.

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Book chapters on the topic "Quarts rotatifs"

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Szadkowski, Zbigniew. "Quarks Mixing in Chiral Symmetries." In Quantum Chromodynamic [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.95233.

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We discuss a subject of the quarks mixing in SU4∗SU4 and SU6∗SU6 symmetries trying to calculate the quarks mixing angles and the complex phase responsible for the CP non-conservation on the basis of the Gell-Mann Oakes Renner model. Assuming symmetry breaking in a limit of exact sub-symmetries for simultaneous quarks rotations in both electric charge sub-spaces we can estimate all mention above parameters. A perfect agreement of the experimental value of the Cabibbo angles with a sum of simultaneous quarks mixing angles in doublets (u,c) and (d,s) in the SU4∗SU4 symmetry suggests that a quarks mixing is realized in a maximal allowed range. The same assumption used for the SU6∗SU6 and a simultaneous maximal allowed quarks mixing in both electric charge triplets (u,c,t) and (d,s,b) gives a perfect agreement with the experimental value of the Cabibbo angle and estimation on the angles Θ2 and Θ3 as well as a bond for the complex phase δ.
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"Measurements via Translation/Rotation of Intracavity Quartz Crystals." In Orthogonal Polarization in Lasers, 407–14. Solaris South Tower, Singapore: John Wiley & Sons, Ltd, 2013. http://dx.doi.org/10.1002/9781118346501.ch15.

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Conference papers on the topic "Quarts rotatifs"

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Ma, Qianli, Haisheng Fang, Chunli Shang, Zhongyi Liu, and Jing Wang. "Analysis of Melt Flows in an Electric Heating Furnace for Quartz Glass Synthesis." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-86112.

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Flow patterns in molten quartz are highly related to the bubble transport and removal. Understanding the flow behavior in molten quartz is of great importance to the manufacture of high-purity quartz glass. In this paper, a numerical model is set up to simulate the flow field of molten quartz in a typical electric heating furnace. Natural convection and Marangoni convection are examined for their respective effects on the flow pattern of molten quartz. Different heater arrangements will change the flow field by varying temperature distributions. Top heating and bottom heating have the same vortex direction; while side heating induces an opposite direction to them. To improve the flow field in molten quartz, forced convection is introduced by crucible rotation. The influences of rotating speed of crucible on the flow field are studied in a wide range varying from 0 to 100 rad/s. With the increase of rotating speed, a reverse vortex to natural convection shows in molten quartz; and the velocity magnitude increase at a growing speed. To find out the optimal flow pattern for quartz glass manufacture, a qualitative analysis is presented on the reliance of bubble transport behavior on the convection modes. Based on the results, useful suggestions are provided towards increasing the bubble-free area of molten quartz and improving the quality of quartz glass.
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LOBITZ, D., E. MAREK, and G. REESE. "Finite element analysis of a quartz rotation sensor." In 31st Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1990. http://dx.doi.org/10.2514/6.1990-1040.

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Bodnar, Ivetta T. "Some peculiarities of rotation of polarization plane in quartz." In ICO XVIII 18th Congress of the International Commission for Optics, edited by Alexander J. Glass, Joseph W. Goodman, Milton Chang, Arthur H. Guenther, and Toshimitsu Asakura. SPIE, 1999. http://dx.doi.org/10.1117/12.355051.

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Endo, Tomoki. "Impact of Rotation on Quark–Hadron Hybrid Stars." In Proceedings of the Workshop on Quarks and Compact Stars 2017 (QCS2017). Journal of the Physical Society of Japan, 2018. http://dx.doi.org/10.7566/jpscp.20.011028.

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Huang, Xu-Guang, Kentaro Nishimura, and Naoki Yamamoto. "Anomaly-Induced Effects of Rotating Dense Matter." In Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018). Journal of the Physical Society of Japan, 2019. http://dx.doi.org/10.7566/jpscp.26.031020.

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Suda, Masamichi, Peng Qiu, Toru Takahashi, Akio Hattori, Yuqiu Yang, Akihiko Goto, and Hiroyuki Hamada. "Process Analysis of Expert and Non-Expert Engineer in Quartz Glass." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-38059.

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Quartz glass is a special glass material known as “King of Glass”. The silicon purity of the quartz glass is very high, therefore it is excellent in heat resistance, chemical resistance and optical transparency as compared to other glasses, such as borosilicate glass. At present, it is used in the production field of leading-edge. Now researches are carried out to develop it as key components of special manufacturing equipment, scientific instruments and analysis equipment that require high-precision, high purity, the high light transmittance. However, due to its high heat resistance, it is difficult to be processed into various shapes. As a result, manufactured quarts glass products, generally, might be different even in one batch. To respond to such products for precision instruments, it is preferable to select the heat molding process by flame called “fire-process” in many cases. “fire-process” is the process of forming a softening point of heated quartz glass material by a mixed combustion flame of hydrogen and oxygen. Therefore, a technique for forming a glass material softened by heating is required, and now it is done by human hand processing of engineers. While skilled human technique of long time experience is required in order to produce high precision and an efficient products. Therefore digitizing and analysis of the work of expert engineers with high level of hand skill is needed to increase the processing technology of the engineers less skilled and take advantage in the manufacture of high-precision products. In this study, the differences in the working process between engineers with different years of experience during the “fire-process” of quartz glass material were analyzed. Fire-process is of heating joint glass cylinders during rotating using a dedicated glass lathe machine. The working behaviors of three operators were recorded by videos during “fire-process”. And the thickness of jointed part of final products was measured by ultrasonic equipment to evaluate the quality of the jointed situation. It is found that these differences in the process of heating joint of glass cylinder have effects on the accuracy of finial production and the manufacturing efficiency.
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Yasutake, Nobutoshi, Kotaro Fujisawa, Hirotada Okawa, and Shoichi Yamada. "Hydrostatic Equilibria of Rotating Stars with Realistic Equation of State." In Proceedings of the Workshop on Quarks and Compact Stars 2017 (QCS2017). Journal of the Physical Society of Japan, 2018. http://dx.doi.org/10.7566/jpscp.20.011050.

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Tian, Shuqing, and Yatao Zhu. "Disk Heat Transfer Analysis in a Heated Rotating Cavity With an Axial Throughflow." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69185.

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In the rotating disk cavities of aero-engine compressors, buoyancy-induced flow and heat transfer can occur due to thermal gradients between cooling air and hot surfaces. The simplified rotating cavity with two plane discs, a shaft and a cylindrical rim has been investigated numerically and compared with the available measurements. Two models have been solved using a commercial CFD code, Fluent, with the RNG k-ε turbulence model. The first one is the conventional model with only fluid region solved, a temperature profile with the linear radial gradient imposed at the disk walls, and an isothermal boundary condition imposed at the shroud wall. The second one is the model with thick-walled disks and shroud, an adiabatic boundary condition imposed at the outer walls of the disks, and an isothermal boundary condition imposed at the outer wall of the shroud. The fluid and solid are coupled solved simultaneously. The disk temperatures are computed. In the present work, the numerical results are in reasonable agreement with the measurements. The computed disk temperatures in the second model have approximately linear radial gradients over the first three-quarters of the disks, and in the last quarter of the disks the temperature radial gradients are obviously non-linear. The different disk temperature profiles in these two models do not lead to obviously different disk heat transfers. The heat transfer in the rotating cavity leads to a considerable temperature increase of the cavity core fluid, therefore a corresponding increase of the outlet temperature. These two temperature increases are critical for the cooling design in aero-engines.
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Wang, Frank, and Marc Smith. "Vibration Analysis and Control of the Quartz Rate Sensor." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59430.

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BEI Systron Donner’s family of quartz inertial sensors uses a one piece, micromachined inertial sensing element to measure angular velocity. These sensors produce an output signal proportional to the rate of rotation sensed. In this paper, the operation of the quartz rate sensor (QRS) is presented. A mathematical model of the quartz fork is extracted, and the vibration characteristics of the quartz fork are presented. In order to control the magnitude of the drive tines, an AGC/Oscillator (AGC: automatic gain control) loop is employed. The system response is analyzed using Matlab and Pspice. A switched capacitor (SC) circuit is used to realize the functions of full wave rectification (FWR), integration, and summation. The AGC level is controlled to within 0.3%/V dependency on the power supply. This fixes the scale factor of the QRS to the same level of power supply rejection.
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Pagliara, Giuseppe, and Alessandro Drago. "Probing the composition of sub-millisecond rotating compact stars by r-modes instability." In VIIIth Conference Quark Confinement and the Hadron Spectrum. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.077.0153.

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Reports on the topic "Quarts rotatifs"

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Stanica, Pantelimon. Affine Equivalence of Quartic Monomial Rotation Symmetric Boolean Functions in Prime Power Dimension. Fort Belvoir, VA: Defense Technical Information Center, January 2015. http://dx.doi.org/10.21236/ada625138.

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Keyvani, M., and N. C. Gardner. Operating characteristics of rotating beds. Technical progress report for the third quarter 1988. Office of Scientific and Technical Information (OSTI), December 1988. http://dx.doi.org/10.2172/10172400.

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