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Um estudo de metamaterial em antenas de microfita
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2014-04-25)
Metamaterials have attracted a great attention in recent years mostly due to their electromagnetic properties not found in nature. Since metamaterials began to be synthesized by the insertion of artificially manufactured ...
Caracterização de estruturas planares com substratos Iso/Anisotrópicos truncados através da técnica da ressonância transversa modificada
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia ElétricaAutomação e Sistemas; Engenharia de Computação; Telecomunicações, 2005-12-19)
This work presents a theoretical and numerical analysis using the transverse resonance technique (TRT) and a proposed MTRT applied in the analysis of the dispersive characteristics of microstrip lines built on truncated ...
Diagnóstico diferencial das lesões inflamatórias e infecciosas do cone medular utilizando a ressonância magnética
(Colégio Brasileiro de Radiologia e Diagnóstico por Imagem, 2013-02-01)
The conus medullaris is frequently affected by inflammatory and infectious lesions which many times are hardly differentiated because of the similarity of their clinical history and physical examination among the different ...
Resonant excitation of Mn local vibrational modes in the higher order Raman spectra of nanocrystalline Ga(1-x)Mn(x)N films
(Iop Publishing Ltd, 2008-06-25)
The effect of manganese on the vibrational properties of Ga(1-x)Mn(x)N (0 <= x <= 0.18) films has been investigated by Raman scattering using 488.0 and 632.8 nm photon excitations. The first-order transverse and longitudinal ...
Resonant excitation of Mn local vibrational modes in the higher order Raman spectra of nanocrystalline Ga(1-x)Mn(x)N films
(Iop Publishing Ltd, 2008-06-25)
The effect of manganese on the vibrational properties of Ga(1-x)Mn(x)N (0 <= x <= 0.18) films has been investigated by Raman scattering using 488.0 and 632.8 nm photon excitations. The first-order transverse and longitudinal ...
Influence of air-filling fraction on forward Raman-like scattering by transversely trapped acoustic resonances in photonic crystal fibers
(Optical Soc AmerWashingtonEUA, 2009)
Subband mixing inducing negative resistance
(Elsevier B.V., 1993-05-01)
A new double channel field-effect structure based on delta-doping technology is proposed Resonant tunneling between the channels is employed to control the transport along the interface plane. A realistic simulation is ...
MRI fast tree log scanning with helical undersampled projection acquisitions
(ELSEVIER SCIENCE INC, 2002)
Magnetic Resonance Imaging opens an alternative way to analyze wood structures using a non-destructive technology. It provides high resolution, compound-based contrast manipulation and increased data acquisition flexibility. ...