Buscar
Mostrando ítems 1-10 de 276
Energy method to calculate the density of liquids using ultrasonic reflection techniques
(2001-12-01)
In this work it is introduced a new approach to calculate the density of liquids in terms of the energies of the acoustic signals. This method is compared to other methods in the time domain (peak-to-peak amplitudes) and ...
Energy method to calculate the density of liquids using ultrasonic reflection techniques
(2001-12-01)
In this work it is introduced a new approach to calculate the density of liquids in terms of the energies of the acoustic signals. This method is compared to other methods in the time domain (peak-to-peak amplitudes) and ...
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 ...