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Mostrando ítems 21-30 de 185
Artículo
Transmission through stacked 2D periodic distributions of square conducting patches
(American Institute of Physics, 2012)
In this paper, we study the transmissivity of electromagnetic waves through stacked two-dimensional printed periodic arrays of square conducting patches. An analytical circuit-like model is used for the analysis. The model ...
Artículo
Carbon capture and utilization for sodium bicarbonate production assisted by solar thermal power
(Elsevier Ltd, 2017)
In this paper, a novel carbon capture and utilization process is proposed. It is based on using a fraction of the captured carbon dioxide to produce sodium bicarbonate, a widely used product in the chemical and food ...
Artículo
Common-mode suppression in microstrip differential lines by means of complementary split ring resonators: Theory and applications
(Institute of Electrical and Electronics Engineers, 2012)
This paper is focused on the application of complementary split-ring resonators (CSRRs) to the suppression of the common (even) mode in microstrip differential transmission lines. By periodically and symmetrically etching ...
Artículo
Making metals transparent: A circuit model approach
(The Optical Society, 2016)
Solid metal films are well known to be opaque to electromagnetic waves over a wide frequency range, from low frequency to optics. High values of the conductivity at relatively low frequencies or negative values of the ...
Artículo
Sevilla: una experiencia exitosa de promoción de la movilidad en bicicleta en el Sur de Europa
(Universidad de Sevilla, 2011)
En apenas cuatro años la ciudad de Sevilla ha pasado de una participación marginal de la bicicleta en el conjunto de la movilidad urbana a cotas de participación en torno al 6% del reparto modal global de la ciudad. Éste ...
Artículo
Simplified Modal Expansion to Analyze Frequency-Selective Surfaces: An Equivalent Circuit Approach
(Institute of Electrical and Electronics Engineers, 2016)
This communication extends a previously reported analytical circuit that models the plane wave scattering by 2-D arrays of planar patches/apertures embedded in a layered media. In this extension, it is assumed that the ...
Artículo
A Novel U-Shaped Tri-Band Antenna on High Permittivity Multilayer Substrate for Wireless Communications
(Editorial Advisory Panel, 2013)
In this paper, a detailed study of a new proposed rectangular dielectric u-shaped tri-band antenna is presented. A meticulous study considering the high permittivity material effect is introduced and discussed. All the ...
Artículo
Charge injection enhanced natural convection heat transfer in horizontal concentric annuli filled with a dielectric liquid
(Elsevier, 2016)
The natural convection heat transfer in a highly insulating liquid contained between two horizontal concentric cylinders is shown by two-dimensional numerical simulations to be noticeably enhanced by imposing a direct ...
Artículo
Controllable production of Janus ligaments by AC fields in a flow‑focusing junction
(Springer, 2019-01)
We report the production of bicomponent Janus filaments of miscible aqueous fluids in a microfluidic electro-flow-focusing device under the action of an AC electric field. The production of liquid filaments can lead to ...
Artículo
On two-dimensional finite amplitude electro-convection in a dielectric liquid induced by a strong unipolar injection
(Elsevier, 2015)
The hydrodynamic stability of a dielectric liquid subjected to strong unipolar injection is numerically investigated. We determined the linear criterion Tc (T being the electric Rayleigh number) and finite amplitude one ...