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Aproximadamente 3979 registro(s) hasta el momento: (journal)

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Recurso libre

Influences of recording geometry parameters on diffraction efficiency in bleached silver halide transmission holograms
Beléndez Vázquez, Augusto - Pascual Villalobos, Inmaculada - Fimia Gil, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	The experimental results of diffraction efficiency as a function of the geometrical disposition of recording beams in bleached silver halide transmission thick-holographic gratings are presented. Two variables have been used to relate these results with certain geometric parameters. These variables…
Fecha:	2009-02-02
Recurso:	RUA Docencia

Recurso libre

Hybrid sol-gel conducting polymer synthetised by electrochemical insertion: tailoring the capacitance of polyaniline
Montilla Jiménez, Francisco - Cotarelo Méndez, María de los Ángeles - Morallón Núñez, Emilia

Formato:	info:eu-repo/semantics/article
Enlaces:	The templated growth of polyaniline through porous sol–gel films on ITO substrates has been performed. The polyaniline–silica composites have been synthesized by electrochemical reactive insertion in potentiodynamic and potentiostatic conditions. When the polymer is synthesized by potential step experiments, the…
Fecha:	2009-05-19
Recurso:	RUA Docencia

Recurso libre

A novel rational harmonic balance approach for periodic solutions of conservative nonlinear oscillators
Beléndez Vázquez, Augusto - Gimeno Nieves, Encarnación - Álvarez López, Mariela Lázara - Gallego Rico, Sergi - Ortuño Sánchez, Manuel - Méndez Alcaraz, David Israel

Formato:	info:eu-repo/semantics/article
Enlaces:	An analytical approximate procedure for a class of conservative single degree-of-freedom nonlinear oscillators with odd non-linearity is proposed. This technique is based on the generalized harmonic balance method in which analytical approximate solutions have rational forms. Unlike the classical harmonic…
Fecha:	2012-05-04
Recurso:	RUA Docencia

Recurso libre

Recurso libre

Formato:	Artículo, Trabajo de investigación original
Enlaces:	Four new species of Theraneis Spinola, collected in Venezuela, Brazil and Peru are described and illustrated. Theraneis is reported for the first time from Venezuela. The distribution pattern of the silvery pubescence as well as the color of the hemelytra…
Fecha:	2013-11-22
Recurso:	Facultad de Ciencias - UNAM

Recurso libre

Silver halide (sensitized) gelatin in Agfa-Gevaert plates: the optimized procedure
Fimia Gil, Antonio - Beléndez Vázquez, Augusto - Pascual Villalobos, Inmaculada

Formato:	info:eu-repo/semantics/article
Enlaces:	Silver halide sensitized gelatin (SHSG) is one of the most promising techniques for the fabrication of transmission holographic optical elements, achieving relatively high sensitivity of photographic material with the low scattering and high light stability of dichromated gelatin. In this…
Fecha:	2009-02-02
Recurso:	RUA Docencia

Recurso libre

A two step method for recording holographic optical elements with partially coherent light
Pascual Villalobos, Inmaculada - Beléndez Vázquez, Augusto - Fimia Gil, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	We propose a two step method which enables us to obtain transmission Holographic Optical Elements of high diffraction efficiency as well as a good signal-to-noise relation. By means of a device using partially coherent light, a master Holographic Optical Element…
Fecha:	2009-01-30
Recurso:	RUA Docencia

Recurso libre

Transformation of wavefront aberrations of holographic lenses for a general position of the exit pupil
Beléndez Vázquez, Augusto - Carretero López, Luis - Fimia Gil, Antonio

Formato:	info:eu-repo/semantics/article
Enlaces:	Equations are derived for determining third-order wavefront aberrations in the plane of the exit pupil from the known aberration in the plane of a holographic lens. Using the transformation equations of wavefront aberration when the plane of the exit pupil…
Fecha:	2009-01-30
Recurso:	RUA Docencia

Recurso libre

Optimization of swimming performance in triathlon
González Parra, Gilberto C. - Díaz Rodríguez, M.

Formato:	info:eu-repo/semantics/article
Enlaces:	Descripción completa.
Fecha:	2009-01-08
Recurso:	RUA Docencia

Recurso libre

10.

Characterization of metric regularity of subdifferentials
Aragón Artacho, Francisco Javier - Geoffroy, Michel H.

Formato:	info:eu-repo/semantics/article
Enlaces:	We study regularity properties of the subdifferential of proper lower semicontinuous convex functions in Hilbert spaces. More precisely, we investigate the metric regularity and subregularity, the strong regularity and subregularity of such a subdifferential. We characterize each of these properties…
Fecha:	2008-12-09
Recurso:	RUA Docencia