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Mostrando ítems 61-70 de 170
Desenvolvimento de protótipo para aplicação do laser de CO2 na laringe humana a curtas distâncias
(ABORL-CCF Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial, 2002-03-01)
Introduction: Laser endolaryngeal surgery has been performed with 350 and 400mm focal length (f ) lenses which converge the laser beam to a minimum spot size, called beam waist. The beam waist size can be described as: ...
Fabrication And Optical Properties Of Strain-free Self-assembled Mesoscopic Gaas Structures
(SpringerNew York, 2017)
Positronium scattering by atoms and molecules at low energies
(Elsevier B.V., 2002-05-01)
The recent theoretical and experimental activities in positronium (Ps) scattering by atoms and molecules are reviewed with special emphasis at low energies. We critically compare the results of different groups - theoretical ...
Effect of metallic Ag growth on the electrical resistance of 3D flower-like Ag4V2O7 crystals
(2017-06-01)
In this communication, we report for the first time the nucleation and growth of metallic Ag nanoparticles on the surface of 3D flower-like Ag4V2O7 crystals, induced by accelerated electron beam irradiation. The growth of ...
Modeling of piezoelectric energy harvesting considering the dependence of the rectifier circuit
(Abcm Brazilian Soc Mechanical Sciences & Engineering, 2014-02-01)
Harvesting energy with piezoelectric materials has been a process of many practical applications in structural health monitoring, either to recharge batteries or feed directly sensors and also electronic devices. In general, ...
Damage detection through nonparametric models using Kautz filters
(2021-05-01)
The goal of this paper is to present an approach to detect structural changes by using nonparametric models. The impulse response functions (IRFs) of mechanical systems in healthy conditions are identified through the sum ...
Optimization of the diffraction efficiency in photorefractive crystals
(Sociedad Española de Optica, 2017-05)
The aim of this work is to study and to optimize the diffraction efficiency in sillenite BTO crystals. A theoretical analysis, where the effects of coupling beams are significant,is carried on. In addition, non-mobile ...
Robust perpendicular exchange coupling in an ultrathin CoO/PtFe double layer: Strain and spin orientation
(Amer Physical SocCollege PkEUA, 2013)
Light-induced ring pattern in a dye-doped nematic liquid crystal
(MDPI, 2021)
The use of dye-doped liquid crystals allows the amplification of the coupling of light and liquid crystals. Light can induce the self-organization of the molecular order. The appearance of ring patterns has been observed, ...
A special BEM for elastostatic analysis of building floor slabs on columns
(Elsevier B.V., 2003-03-01)
This work presents a boundary element formulation for the analysis of building floor slabs, without beams, in which columns are coupled with the plate. An alternative formulation of boundary element method is presented, ...