Results 21 to 30 of about 45,161 (201)

The potential of date palm midribs-based fabric acoustic panels for sustainable interior design

open access: yesAin Shams Engineering Journal, 2023
This paper presents an experimental study of acoustic absorption of novel fabric acoustic panels utilizing non-woven fabric cores and fabric facings made of date palm midribs-fibers; to be used as absorbent panels for spaces with privacy needs.
E.A. Darwish, Mohamad Midani
doaj   +1 more source

The impact of regular diving on the condition of the middle ear

open access: yesInternational Journal of Occupational Medicine and Environmental Health, 2021
Objectives It is generally held that exposure to both high-pressure and long-lasting contact with water makes diving a potentially hazardous sports activity as far as the ears are concerned.
Olgierd Stieler   +6 more
doaj   +1 more source

Clinical evaluation of Eustachian tube transience and function in patients with different types of increased nasal resistance [PDF]

open access: yesVojnosanitetski Pregled, 2009
Background/Aim. Eustachian tube is a connection between throat and the middle ear. Inflammatory processes and malformations of nasal cavity could lead to dysfunction of the whole upper respiratory tract, this emphasizing the evaluation of the Eustachian ...
Andrić-Filipović Snežana   +3 more
doaj   +1 more source

Can Wideband Absorbance Be Used in the Detection of Ossicular Chain Defects [PDF]

open access: yesIranian Journal of Otorhinolaryngology, 2022
Introduction:We aimed to compare the effectiveness of wideband absorbance in detecting ossicular chain discontinuity with intraoperative findings.Materials and Methods:In this study, 58 ears from 38 patients with chronic otitis media (COM) were included.
Fulya Turanoglu   +3 more
doaj   +1 more source

Data-driven acoustic impedance inversion with reweighted L1 norm sparsity constraint

open access: yesFrontiers in Earth Science, 2023
Acoustic impedance (AI) inversion is widely used in geophysics and reservoir prediction. But the traditional impedance inversion method cannot fully exploit the sparse characteristics of geological attributes. There are problems with multiplicity and low
Lian Zhao   +7 more
doaj   +1 more source

Medidas de reflectância acústica na otosclerose: estudo de caso

open access: yesAudiology: Communication Research, 2014
O objetivo deste trabalho foi analisar as medidas de reflectância em uma paciente com otosclerose. A paciente, do gênero feminino, 51 anos, apresentava queixa de hipoacusia bilateral e a hipótese diagnóstica de otosclerose.
Letícia Cortez Neto   +3 more
doaj   +1 more source

Effect of Plastic Fibers on Properties of Foamed Concrete [PDF]

open access: yesEngineering and Technology Journal, 2013
The main objective of this work is to study the effect of adding plastic fibers on Lightweight Aggregate Foamed Concrete (LWAFC) using mix proportion of 1:2.6:0.4 by volume (cement: fine Porcelanite: coarse Porcelanite) with 2% foaming agent by weight of
Hisham K. Ahmed   +2 more
doaj   +1 more source

Experimental investigation of inter-element isolation in a medical array transducer at various manufacturing stages [PDF]

open access: yes, 2016
This work presents the experimental investigation of vibration maps of a linear array transducer with 192 piezoelements by means of a laser Doppler vibrometer at various manufacturing finishing steps in air and in water.
Bini, Fabiano   +2 more
core   +1 more source

Impulse Generation by an Open Shock Tube [PDF]

open access: yes, 2008
We perform experimental and numerical studies of a shock tube with an open end. The purpose is to investigate the impulse due to the exhaust of gases through the open end of the tube as a model for a partially filled detonation tube as used in pulse ...
Browne, S. T.   +3 more
core   +1 more source

Acoustic transmission loss in Hilbert fractal metamaterials

open access: yesScientific Reports, 2023
Acoustic metamaterials are increasingly being considered as a viable technology for sound insulation. Fractal patterns constitute a potentially groundbreaking architecture for acoustic metamaterials.
Gianni Comandini   +3 more
doaj   +1 more source

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