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Mostrando ítems 101-110 de 232
Simple Four-wave-mixing-based Method For Measuring The Ratio Between The Third- And Fourth-order Dispersion In Optical Fibers
(Optical Society of American (OSA), 2007)
Mapping irregularities in the postsunset equatorial ionosphere with an expanded network of HF beacons
(American Geophysical Union, 2021-07)
Data from a network of high-frequency (HF) beacons deployed in Peru are used to estimate the regional ionospheric electron density in a volume. Pseudorange, accumulated carrier phase, and signal power measurements for each ...
Comparação clínica e radiográfica entre pacientes submetidos a tratamento cirúrgico artroscópico para instabilidade anterior do ombro com a utilização de âncoras metálicas ou de poliéster
(Universidade Federal de Minas GeraisBrasilPrograma de Pós-Graduação em Ciências Aplicadas à Cirurgia e à OftalmologiaUFMG, 2020-05-21)
Objectives: To compare clinical, radiographic results and complication rates of labral reinsertion at the anterior edge of the glenoid with metal and polyester anchors in the anterior shoulder instability.
Methods: ...
Quantifying resonant and near-resonant interactions in rotating turbulence
(Cambridge University Press, 2016-11)
Nonlinear triadic interactions are at the heart of our understanding of turbulence. In flows where waves are present, modes must not only be in a triad to interact, but their frequencies must also satisfy an extra condition: ...
Large-amplitude electromagnetic waves in magnetized relativistic plasmas with temperature.
Propagation of large-amplitude waves in plasmas is subject to several sources of nonlinearity due to relativistic effects, either when particle quiver velocities in the wave field are large, or when thermal velocities are ...
Thermal effects in non-Fermi liquid superconductivity
(American Physical Society, 2021-04)
We revisit the interplay between superconductivity and quantum criticality when thermal effects from virtual static bosons are included. These contributions, which arise from an effective theory compactified on the thermal ...
Strong Optical-Mechanical Coupling in a Vertical GaAs/AlAs Microcavity for Subterahertz Phonons and Near-Infrared Light
(American Physical Society, 2013-01)
We show that distributed Bragg reflector GaAs/AlAs vertical cavities designed to confine photons are automatically optimal to confine phonons of the same wavelength, strongly enhancing their interaction. We study the ...
Signatures of primordial non-Gaussianities in the matter power-spectrum and bispectrum: the time-RG approach
(Iop Publishing Ltd, 2010-03-01)
We apply the time-renormalization group approach to study the effect of primordial non-Gaussianities in the non-linear evolution of cosmological dark matter density perturbations. This method improves the standard perturbation ...
SINTONIZACIÓN DE CONTROLADORES TIPO PROPORCIONAL - DERIVATIVO PARA SISTEMAS LINEALES CON RETARDO
(2011-11-29)
Time delay is the property of a physical system so that the response to an applied force
(action) is delayed in its e ect. Whenever material, information or energy is physically transmitted
from one place to another, ...
DISE˜NO DE UN ESQUEMA OBSERVADOR CONTROLADOR PARA LA ESTABILIZACI´ON DE SISTEMAS CON RETARDO Y CON DOS POLOS INESTABLES
(2011-06-15)
In engineering, many reactions of the system to external actions do not take place
instantaneously. This phenomena is linked with propagation and transport of energy
or material, and systems that present this feature are ...