Готові списки джерел за темами / Charge de Rayleigh

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Добірка наукової літератури з теми "Charge de Rayleigh"

Автор: Grafiati

Опубліковано: 29 березня 2025

Оновлено: 31 липня 2025

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Статті в журналах з теми "Charge de Rayleigh"

Post, Scott L., and Rory L. Roten. "A Review of the Effects of Droplet Size and Flow Rate on the Chargeability of Spray Droplets in Electrostatic Agricultural Sprays." Transactions of the ASABE 61, no. 4 (2018): 1243–48. http://dx.doi.org/10.13031/trans.12516.

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Abstract. The chargeability of liquid sprays is an important factor in determining the deposition efficiency of electrostatic pesticide sprays. The Rayleigh limit provides information on the maximum amount of charge a spray droplet can carry as a function of droplet size and liquid properties. This article reviews the literature to determine what fraction of the Rayleigh limit is achievable. Typically, less than 10% of the Rayleigh limit charge is obtained. The droplet charge per unit mass decreases with increasing droplet size and liquid flow rate. A correlation equation is derived from publi

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Airey, M. W., R. G. Harrison, K. L. Aplin, C. Pfrang, and B. McGinness. "Electrical effects on droplet behaviour." Journal of Physics: Conference Series 2702, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1742-6596/2702/1/012015.

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Abstract The effect of charge on water droplets modulates various aspects of their behaviour. These include the droplet stability, evaporation, and lifetime. Microphysical models have been developed such that a reasonably good understanding of these processes has been achieved. However, the specific effects of charge deserve further scrutiny as they are an intrinsic component of the factors controlling droplet characteristics. Describing the effects of these requires an understanding of the electrostatic pressure present in the droplet and its surface tension. One way to test these effects and

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Singh, Baljeet, Asha Sangwan, and Jagdish Singh. "Nonlocal effects on Rayleigh-type surface wave in a micropolar piezoelectric medium." Vietnam Journal of Mechanics 44, no. 1 (2022): 1–13. http://dx.doi.org/10.15625/0866-7136/16539.

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The properties of Rayleigh-type surface wave in a linear, homogeneous and transversely isotropic nonlocal micropolar piezoelectric solid half-space are explored. Dispersion relations for Rayleigh-type surface wave are derived for both charge free and electrically shorted cases. Using an algorithm of iteration method in MATLAB software, the wave speed of Rayleigh wave is computed for relevant material constants. The effects of nonlocality, angular frequency, micropolarity and piezoelectricity are illustrated graphically on the propagation speed of Rayleigh wave.

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Novo, Carolina, and Paul Mulvaney. "Charge-Induced Rayleigh Instabilities In Small Gold Rods." Nano Letters 7, no. 2 (2007): 520–24. http://dx.doi.org/10.1021/nl062649t.

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Basavaraju, G., Lynn Kissel, John C. Parker, R. H. Pratt, S. C. Roy, and S. K. Sen Gupta. "Rayleigh scattering by atomic ions of low nuclear charge." Physical Review A 34, no. 3 (1986): 1905–11. http://dx.doi.org/10.1103/physreva.34.1905.

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Tung, Do Xuan. "Dispersion equation of Rayleigh waves in transversely isotropic nonlocal piezoelastic solids half-space." Vietnam Journal of Mechanics 41, no. 4 (2019): 363–71. http://dx.doi.org/10.15625/0866-7136/14621.

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This study is devoted to investigate the propagation of Rayleigh-type waves in transversely isotropic nonlocal piezoelastic half-space. When the stress-free boundary is maintained at charge-free condition, the dispersion equation for the propagation of Rayleigh waves at the free surface of transversely isotropic piezoelastic solids has been obtained. Based on the obtained dispersion equation, the effect of the nonlocality on the speed of Rayleigh wave is numerically considered. The dependence of velocities of plane waves in transversely isotropic nonlocal piezoelastic medium on the direction o

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Wang, C. H., J. N. Woodford, C. Zhang, and L. R. Dalton. "Resonant and nonresonant hyper–Rayleigh scattering of charge-transfer chromophores." Journal of Applied Physics 89, no. 8 (2001): 4209–17. http://dx.doi.org/10.1063/1.1354636.

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Akrour, Dalila, Mohamed Issam Elkhazen, Walid Hassen, et al. "Numerical Investigation of the Electro-Thermo Convection in an Inclined Cavity Filled with a Dielectric Fluid." Processes 11, no. 8 (2023): 2506. http://dx.doi.org/10.3390/pr11082506.

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The present work is a numerical analysis of electro-thermo convection, occurring in a square differentially heated cavity filled with a dielectric fluid. The cavity experiences the combined effects of viscous, electrical, and thermal forces. The equations modelling the physical problem are solved via the finite volume approach. The study focuses on the effect of cavity tilt on the fluid flow structure and thermal performance inside the enclosure under the action of an electric field. A parametric study was performed, where the tilt angle is getting varied between 0° and 90°, as well as the Ray

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Wang, Xiaoyi, Wenyu Hu, Yang Qiu, et al. "Directional charge transportation and Rayleigh scattering for the optimal in-band quantum yield of a composite semiconductor nano-photocatalyst." Catalysis Science & Technology 11, no. 11 (2021): 3855–64. http://dx.doi.org/10.1039/d0cy02316g.

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The work propose a novel technique based on wavelength dispersive in situ photoluminescence spectroscopy for diagnosing the wavelength dependent directional charge transportation and Rayleigh scattering enhanced in-band quantum yield.

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Langdon-Arms, Samuel, Michael Gschwendtner, and Martin Neumaier. "Rayleigh-Taylor instability in oscillating liquid pistons." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 4 (2018): 1236–45. http://dx.doi.org/10.1177/0954406218768836.

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In this study, an experimental apparatus is used to excite four U-tube-shaped liquid pistons connected in series, and to study their behaviour. Some of the gas spaces are heated to induce piston oscillations; in others, gas expansion is utilised to produce a refrigeration effect. It was discovered that the liquid piston surface would become unstable and turbulent at relatively low gas charge pressures (2 bar–3 bar). Cylindrical polyethylene floats were employed at each piston surface in order to reduce the area of the free surface of each piston and allow experiments to be conducted over a wid

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Дисертації з теми "Charge de Rayleigh"

Cantegril, Thomas. "Étude de l’électrisation de gouttes de carburant aéronautique." Electronic Thesis or Diss., Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2024. http://www.theses.fr/2024ESMA0031.

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Le secteur aéronautique doit relever des défis environnementaux majeurs pour les décennies à venir. Afin de réduire son impact environnemental, des objectifs ambitieux ont été fixés par des instances comme l’ACARE, visant une neutralité carbone d'ici 2050. Parmi ces objectifs, une réduction de 90 % des émissions d’oxydes d’azote par rapport à 2000, une baisse de 55 % des émissions de CO₂ d’ici 2030 par rapport à 1990 comme une diminution des particules fines et des traînées de condensation sont donc attendus. Pour y parvenir, l’amélioration de la combustion dans les moteurs, principale source

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Santos, Leandra Pereira dos 1985. "Eletrização de líquidos e sólidos : excessos de carga e efeito sobre as propriedades de superfície." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250321.

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Orientador: Fernando Galembeck<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química<br>Made available in DSpace on 2018-08-25T12:45:16Z (GMT). No. of bitstreams: 1 Santos_LeandraPereirados_D.pdf: 6636066 bytes, checksum: 1088753dac4139ce09351108770ac021 (MD5) Previous issue date: 2013<br>Resumo: Nesta tese, investigou-se a eletrização e os mecanismos de acúmulo de carga em gotas de água e filmes de polietileno, bem como, avaliou-se o efeito das cargas elétricas em algumas propriedades desses materiais. A eletrização de água foi realizada de duas formas: pelo contato

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Saidi, Mohamed. "Mesure et analyse de l'état de déformation et d'endommagement interne dans les composites à matrice cimentaire utilisés pour le renforcement des structures de génie civil." Thesis, Lyon, 2020. http://www.theses.fr/2020LYSE1092.

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Les composites à matrice cimentaire et renforts textiles, du fait de leur compatibilité mécanique, environnementale et esthétique, sont utilisés sur une large échelle pour la réhabilitation et le renforcement du patrimoine bâti et des ouvrages du génie civil. Sous l'effet de sollicitations mécaniques ou environnementales, les phénomènes d'interaction et d'endommagement entre le renfort textile et la matrice cimentaire s'avèrent plus complexes que dans le cas des composites à matrice polymères. Celles-ci sont liées principalement au comportement fissurant du composite, à la nature fragile de la

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Baigl, Damien. "Etude expérimentale de polyélectrolytes hydrophobes modèles." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2003. http://tel.archives-ouvertes.fr/tel-00003620.

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Un polyélectrolyte hydrophobe est un polymère portant des charges électriques lorsqu'il est en solution aqueuse et dont l'eau est un mauvais solvant pour le squelette. Cette thèse a pour objectif d'établir l'influence de la nature hydrophobe du squelette sur les propriétés physiques des polyélectrolytes. Pour cela, nous avons tout d'abord synthétisé une série de poly(styrène-\emph(co)-styrènesulfonate de sodium), appelés PSS, possédant des taux de charge $f$ variant entre 30\% et 100\% et comportant entre $N=120$ et $N=2520$ monomères par chaîne. Ces PSS sont caractérisés précisément et peuven

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Alghamdi, Amani Saeed. "Study of Generalized Lomax Distribution and Change Point Problem." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1526387579759835.

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Bruneton, Marianne. "Etude de la structure lithosphérique 3D du bouclier balte par l'analyse des ondes de Rayleigh." Phd thesis, Université Joseph Fourier (Grenoble), 2003. http://tel.archives-ouvertes.fr/tel-00719966.

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La tomographie sismologique à l'échelle régionale peut donner des informations sur la structure profonde des continents anciens. Nous développons une méthode de tomographie en ondes de surface, puis nous l'appliquons aux ondes de Rayleigh du projet SVEKALAPKO (bouclier Balte). Cette méthode est basée sur le tracé de rais 2D, elle tient compte de la courbure des fronts d'onde incidents. Le profil moyen en vitesse des ondes S obtenu est de 4% plus rapide que des modèles de Terre standards et ne présente pas de zone à moindre vitesse. La comparaison avec des données issues de xénolithes implique

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Noël, Justine. "Étude de la convection naturelle dans les matériaux à changement de phase." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0062.

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Les matériaux à changement de phase (MCP) sont très utilisés pour le stockage de l'énergie thermique. Cependant, le temps de stockage/déstockage peut être important. La convection naturelle au sein du MCP permet de réduire ce temps et d'améliorer la fusion. Cette thèse propose l'étude expérimentale des effets de convection dans les MCP. Ces matériaux sont généralement opaques et les mesures optiques sont par conséquent difficiles à mettre en œuvre. Pour contrer ce problème, l'étude est réalisée par mesure IRM (Imagerie par Résonance Magnétique). L'IRM permet d'obtenir des cartographies de phas

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Uguz, Kamuran Erdem. "Evaporative instability in binary mixtures." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112169/document.

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Cette étude concerne la physique des écoulements convectifs résultant d’une instabilité d’évaporation de fluides binaires. Ce problème a de nombreuses applications, l’enrobage par centrifugation, le dépôt de films, les caloducs, etc, pour lesquels le changement de phase et la convection jouent un rôle prépondérant dans la conception et la qualité des procédés. Le système physique étudié est un mélange liquide sous sa propre vapeur, confiné par deux plaques conductrices de chaleur et des bords latéraux isolants. Les plaques sont utilisées pour appliquer un gradient thermique. Aucun gradient de

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Vaněk, Stanislav. "Měření seismické činnosti pomocí optických vláknových senzorů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376912.

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The aim of master's thesis is to get familiarized with the problems of measurement and analysis of seismic waves. Theoretical part deals with the description of seismic waves, especially their types, sources and properties. Attention was afterwards focused on the measurement systems of these waves, emphasis was placed on their principles and advantages. The practical part discusses methods of noise reduction and highlighting of significant events in measured data. At the end, individual methods are implemented into user-friendly graphical interface.

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Díez, Mikel. "Studies of the Mechanics and Structure of Shallow Magmatic Plumbing Systems." Scholar Commons, 2008. https://scholarcommons.usf.edu/etd/214.

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Volcanic activity, and the resultant deposits and structures at the Earth's surface, are the outcome of the inner workings of underground magmatic plumbing systems. These systems, essentially, consist of magma reservoirs which supply magma to the surface through volcanic conduits feeding volcanic eruptions. The mechanics and structure of plumbing systems remain largely unknown due to the obvious challenges involved in inferring volcanic processes occurring underground from observations at the surface. Nevertheless, volcanologists are beginning to gain a deeper understanding of the workings and

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Книги з теми "Charge de Rayleigh"

C, Herring G., Barros Toya, and Langley Research Center, eds. Demonstration of imaging flow diagnostics using Rayleigh scattering in Langley 0.3-Meter Transonic Cryogenic Tunnel. National Aeronautics and Space Administration, Langley Research Center, 1999.

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Lukaszuk, Katarzyna. Elektrooptische Absorptionsmessungen und Hyper-Rayleigh-Streuexperimente zur Bestimmung der Polarisierbarkeit zweiter Ordnung von Charge-Transfer-Komplexen. 1999.

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Частини книг з теми "Charge de Rayleigh"

Hemdal, Stina, and Andrei N. Lipatnikov. "Investigation of Charge Mixing and Stratified Fuel Distribution in a DISI Engine Using Rayleigh Scattering and Numerical Simulations." In Advances in Engine and Powertrain Research and Technology. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-91869-9_8.

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Samal, M. K. "Development of a Material Constitutive Model and Simulation Technique to Predict Nonlinearities in Piezoelectric Materials under Weak Electric Fields." In Mathematical Concepts and Applications in Mechanical Engineering and Mechatronics. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1639-2.ch013.

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Piezoceramic materials exhibit different types of nonlinearities depending upon the magnitude of the mechanical and electric field strength in the continuum. Some of the nonlinearities observed under weak electric fields are: presence of superharmonics in the response spectra and jump phenomena etc. especially if the system is excited near resonance. It has also been observed by many researchers that, at weak alternating stress fields, the relationship between the piezoelectrically induced charge and applied stress in ferroelectric ceramics, has the same form as the Rayleigh law (for magnetiza

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He, Guang S. "Stimulated Rayleigh–Bragg Scattering." In Laser Stimulated Scattering and Multiphoton Excitation. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780192895615.003.0007.

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In a two- or three-photon active liquid or solution, the input pump beam may interfere with the initial backward Rayleigh scattering beam to form a standing-wave field with a spatially periodic intensity modulation, which leads to the formation of an induced stationary Bragg grating through the intensity-dependent and multiphoton-resonance-enhanced refractive-index change of the scattering medium. The nonlinear reflection from the induced stationary Bragg grating provides the necessary gain to the backward Rayleigh scattering beam and may lead to a stimulated Rayleigh–Bragg scattering generati

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ZANETTI, Massimo, Francesca BOVOLO, and Lorenzo BRUZZONE. "Statistiques par différences pour les changements multispectraux." In Détection de changements et analyse des séries temporelles d’images 1. ISTE Group, 2022. http://dx.doi.org/10.51926/iste.9056.ch9.

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Dans ce chapitre, nous introduisons deux modèles statistiques pour la description de la distribution des vecteurs de différences spectrales, et nous en tirons des méthodes de détection de changements basées sur une différence d'images. Le chapitre introduit d'abord le modèle standard à deux classes inchangé/changé pour la classification binaire. Lorsqu'on considère les informations de module, le modèle à deux classes peut être décrit par un mélange de distributions Rayleigh-Rice. L'estimation de paramètres de ce mélange est une tâche non triviale car ce modèle est non conventionnel. Par conséq

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Kumar, Samir, Prabhat Kumar, Anamika Das, and Chandra Shakher Pathak. "Surface-Enhanced Raman Scattering: Introduction and Applications." In Recent Advances in Nanophotonics - Fundamentals and Applications. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.92614.

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Scattering of light by molecules can be elastic, Rayleigh scattering, or inelastic, Raman scattering. In the elastic scattering, the photon’s energy and the state of the molecule after the scattering events are unchanged. Hence, Rayleigh scattered light does not contain much information on the structure of molecular states. In inelastic scattering, the frequency of monochromatic light changes upon interaction with the vibrational states, or modes, of a molecule. With the advancement in the laser sources, better and compact spectrometers, detectors, and optics Raman spectroscopy have developed

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Maggiore, Michele. "Scattering of electromagnetic radiation." In A Modern Introduction to Classical Electrodynamics. Oxford University PressOxford, 2023. http://dx.doi.org/10.1093/oso/9780192867421.003.0016.

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Abstract In this chapter we discuss the scattering of electromagnetic waves by charged particles. We define the scattering cross-section. We then consider the scattering of electromagnetic waves from free electrons, giving rise to the Thomson cross section, expressed in terms of the classical electron radius. We discuss the limit of validity imposed by quantum mechanics, and the corresponding Compton scattering. We then consider the scattering from electrons bound in atoms or molecules and compute the corresponding cross-section and resonant scattering. We conclude with the classic explanation

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Brown, John M. "Raman spectroscopy." In Molecular Spectroscopy. Oxford University Press, 1998. http://dx.doi.org/10.1093/hesc/9780198557852.003.0006.

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This chapter discusses Raman spectroscopy, which is based on a light scattering effect and named after the Indian physicist C.V. Raman, who was the first to observe it after A. Smekal had theoretically predicted it in 1928. Raman spectroscopy provides a way for obtaining information on the rotational and vibrational levels of a homonuclear diatomic molecule, which is not possible using rotational and rotational–vibrational spectra. The chapter also mentions Rayleigh scattering wherein the great majority of photons are scattered in all directions without a change in energy. The chapter illustra

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Rojac, Tadej. "Piezoelectric Nonlinearity and Hysteresis Arising from Dynamics of Electrically Conducting Domain Walls." In Hysteresis in Engineering [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98721.

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Macroscopic nonlinearity and hysteresis observed in the piezoelectric and dielectric responses of ferroelectric materials to external stimuli are commonly attributed to localized displacements of domain walls (DWs). The link between the macroscopic response and microscopic DW dynamics is provided by the well-known Rayleigh relations, extensively used to quantify the electrical and electromechanical behavior of ferroelectric ceramics and thin films under subswitching conditions. In this chapter, I will present an intriguing case where DWs exhibit enhanced electrical conductivity with respect to

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Omer, Ala Eldin. "Review of Spectrum Sensing Techniques in Cognitive Radio Networks." In Advances in Wireless Technologies and Telecommunication. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-5354-0.ch005.

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Most frequency spectrum bands are licensed to certain services to avoid the interference between various networks, but the spectrum occupancy measurements show that few portions of this spectrum are fully efficiently used. Cognitive radio is a future radio technology that is aware of its environment, internal state, and can change its operating behavior (transmitter parameters) accordingly. Through this technology the unlicensed users can use the underutilized spectrum without causing any harmful interference to the licensed users. Its key domains are sensing, cognition, and adaptation. The sp

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Merveil Anague Tabejieu, Lionel, Blaise Roméo Nana Nbendjo, and Giovanni Filatrella. "Vibrations of an Elastic Beam Subjected by Two Kinds of Moving Loads and Positioned on a Foundation having Fractional Order Viscoelastic Physical Properties." In Advances in Dynamical Systems Theory, Models, Algorithms and Applications. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96878.

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The present chapter investigates both the effects of moving loads and of stochastic wind on the steady-state vibration of a first mode Rayleigh elastic beam. The beam is assumed to lay on foundations (bearings) that are characterized by fractional-order viscoelastic material. The viscoelastic property of the foundation is modeled using the constitutive equation of Kelvin-Voigt type, which contain fractional derivatives of real order. Based to the stochastic averaging method, an analytical explanation on the effects of the viscoelastic physical properties and number of the bearings, additive an

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Тези доповідей конференцій з теми "Charge de Rayleigh"

Perrot, J., J. Hainsworth, E. Marin, et al. "Radiation Induced Refractive Index Change in Optical Fibres through Rayleigh-OFDR and FBG Techniques." In Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides. Optica Publishing Group, 2024. http://dx.doi.org/10.1364/bgpp.2024.btu3a.3.

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This study compares radiation-induced refractive index variations in SMF-28e+ fibres using Type II femtosecond-inscribed FBGs and R-OFDR techniques. It aims to understand femtosecond laser pulse effects on fibre core composition and behaviour in harsh environment.

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Fujikawa, Yasunori, Ryota Matsui, and Taichiro Okazaki. "Influence of hysteretic models on viscous damping in nonlinear response history analysis of buildings." In IABSE Symposium, Tokyo 2025: Environmentally Friendly Technologies and Structures: Focusing on Sustainable Approaches. International Association for Bridge and Structural Engineering (IABSE), 2025. https://doi.org/10.2749/tokyo.2025.3303.

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<p>In time-history response analysis of elastic-plastic systems, common viscous damping models yield unintended spurious damping forces. A previous study exhibited thirteen different damping models resulted in different elastic-plastic response of a 5-degree-of-freedom system assigning a bi-linear hysteresis model. This paper expands on that work by analyzing the impact of these damping models on the elastic-plastic response of systems incorporating five distinct hysteresis models. The number of rapid stiffness changes significantly increases the potential of generating large spurious da

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Friedman, Jonathan S., Mark W. Robison, Craig A. Tepley, Paul Castleberg, and Francisco Garcia. "Charge-Coupled-Device Detection for a Doppler-Rayleigh Lidar." In Optical Remote Sensing of the Atmosphere. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/orsa.1993.fa.4.

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The use of a charge-coupled device (CCD) camera together with a Fabry-Perot etalon (FP) to measure neutral winds in the thermosphere using 630 nm airglow has been proposed by Hays [1990]. In principle, the same technique is used for lidar winds with the sole difference being that a lidar provides its own light source, whereas airglow relies on a naturally occurring emission in the atmosphere. Hays [1990] showed that a CCD array detector attached to an etalon has more than an order of magnitude higher sensitivity than a photomultiplier tube (PMT). Particular advantages of using a CCD are: (1) I

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Van de Walle, J., R. J. Tarento, and P. Joyes. "Localized charge Van der Waals ionic states above the Rayleigh limit." In Similarities and differences between atomic nuclei and clusters. AIP, 1997. http://dx.doi.org/10.1063/1.54569.

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Hendrickx, E., T. Verbiest, K. Clays, and A. Persoons. "Molecular first hyperpolarisabilities of Bacteriorhodopsin and Retinal chromophores as determined from Hyper Rayleigh Scattering." In Organic Thin Films for Photonic Applications. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/otfa.1993.wc.4.

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In previous papers [1.2,3] we demonstrated the feasibility of the Hyper Rayleigh Scattering (HRS) technique for the determination of the first molecular hyperpolarizability β in a macroscopically isotropic solution. This technique has several advantages over the more classic electric field induced second harmonic generation (EFISHG) technique because no electric field is required to break the centrosymmetry of the solution. Consequently, HRS allows for an easy and accurate determination of β of charged molecules and of molecules where β originates from octopolar charge distributions. Here we d

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Verbiest, T., E. Hendrickx, A. Persoons, and K. Clays. "Measurements of molecular optical Hyperpolarisabilities using Hyper-Rayleigh Scattering." In Nonlinear Optics. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/nlo.1992.fb4.

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In this paper we report on new experiments of Hyper-Rayleigh Scattering (HRS) in solution, i.e. incoherent second harmonic light scattered from solutions illuminated by intense (IR) laser pulses. The HRS-technique, developed recently1, allows an accurate and easy determination of first order hyperpolarisabilities β of molecules. The great advantage of HRS as compared to electric field induced second harmonic generation (EFISHG, the other technique to determine β) is the absence of an orienting electric field to reduce the intrinsic symmetry of an isotropic solution. As a consequence data on th

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Avramov-Zamurovic, Svetlana, K. P. Judd, S. Matt, R. A. Handler, and A. T. Watnik. "The impact of optical turbulence created by Rayleigh Benard convection on vortex structure in beams carrying orbital angular momentum." In Propagation Through and Characterization of Atmospheric and Oceanic Phenomena. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/pcaop.2022.pw1f.1.

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We simulate Rayleigh Benard natural convection in air and propagate Gaussian Laguerre beams with varying topological charge through it. We present the impact of the optical turbulence on the phase and intensity of the beams.

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Guildenbecher, Daniel R., and Paul E. Sojka. "Secondary Breakup of Electrically Charged Newtonian Drops." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41898.

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An experimental investigation was conducted to determine the secondary breakup morphology of electrically charged drops. Movies of drop breakup in a high speed air stream were recorded for drops charged between 0 and 60% of the Rayleigh charge limit. The conventional Weber number was found to be insufficient to classify the breakup morphology of charged drops. Rather an electrostatic Weber number was defined to account for the presence of the electrostatic surface stress. When the electrostatic Weber number was used in place of the classical Weber number, the observed breakup morphology was fo

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Yang, Qingzhen, Zhengtuo Zhao, Ben Q. Li, and Yucheng Ding. "A Phase Field Modeling Study of the Rayleigh-Taylor Instability Subject to a Horizontal Electric Field." In ASME 2013 Heat Transfer Summer Conference collocated with the ASME 2013 7th International Conference on Energy Sustainability and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ht2013-17751.

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A numerical phase field model is developed to investigate the Rayleigh-Taylor instability (RTI) subject to a horizontal electric field. The model entails the simultaneous solution of the electric field equation and the Navier-Stokes equation for fluid flow coupled with the phase field model for the evolution of the fluid-fluid interface deformation and morphology. The in-house Fortran code was developed to enable the computing. Results show that, for pure dielectric fluids, the presence of the horizontal electric field induces polarization charges and produces a Korteweg-Helmholtz force which

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Gu, Claire, and Pochi Yeh. "Scattering due to random space-charge field in photorefractive crystals." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.mj6.

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The fluctuation of refractive index introduced by the random space-charge field via the Pockels effect is one of the noise sources in photorefractive media. In EO crystals, including photorefractive crystals, charge particles such as ionized dopants and defects are randomly distributed. The space-charge electric field generated by these charge particles induces a fluctuation in dielectric constant (or equivalently index of refraction) from the Pockels effect. Such fluctuation exists even in the presence of hologram recording and two-wave mixing. When the crystal is illuminated by light, scatte

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