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Estudo impedanciométrico das variações de pressão e volume da orelha média e presença de reflexos acústicos em escolares brasileiros
(Universidade Federal de São Paulo (UNIFESP), 1985)
Construção de um tubo de impedâncias e teste através do método de função de transferência
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia MecânicaUTFPR, 2017-12-06)
When designing an environment or an equipment it is often necessary to consider its acoustic conditions, such as the amount of sound that transmitted to nearby environments, as there is often a need for sound insulation, ...
Secretion of middle ear in infants - Occurrence, recurrence and related factors
(2005-03-01)
Objective: The present study aimed at evaluating the occurrence and recurrence of middle ear effusion and possible associated factors in the first two years of life of 190 newborns and infants, participants in the ...
Secretion of middle ear in infants - Occurrence, recurrence and related factors
(2005-03-01)
Objective: The present study aimed at evaluating the occurrence and recurrence of middle ear effusion and possible associated factors in the first two years of life of 190 newborns and infants, participants in the ...
Construção e teste de um tubo de impedância para medição de isolamento
(Universidade Tecnológica Federal do ParanáCuritibaBrasilCurso de Engenharia MecânicaUTFPR, 2018-12-10)
Due to the increasing noise pollution, especially in large urban centers, the need
for sound insulation in order to increase comfort and reduce noise damage has
increased. To use and research for materials for this ...
Simple and fast gradient-based impedance inversion using total variation regularization
(Geophysical Press, 2018-10)
We present an algorithm to estimate blocky images of the subsurface acoustic impedance (AI) from poststack seismic data. We regularize the resulting inverse problem, which is inherently ill-posed and non-unique, by means ...