Results 21 to 30 of about 444,257 (298)

Heat Treatment’s Effect on Properties of Polystyrene from Building Demolitions

open access: yesBioResources, 2023
Polystyrene (PS) is a synthetic polymer widely used as a packaging material and in thermal insulation of buildings. At end-of-life, there are not many recycling management options of PS because of the reduced incentive and high cost.
Dafni Foti   +4 more
doaj   +2 more sources

Sub-wavelength phononic crystal liquid sensor [PDF]

open access: yes, 2011
We introduce an acoustic liquid sensor based on phononic crystals consisting of steel plate with an array of holes filled with liquid. We both theoretically and experimentally demonstrate sensor properties considering the mechanism of the extraordinary ...
Ke, Manzhu   +2 more
core   +1 more source

Similarities between action potentials and acoustic pulses in a van der Waals fluid [PDF]

open access: yes, 2018
An action potential is typically described as a purely electrical change that propagates along the membrane of excitable cells. However, recent experiments have demonstrated that non-linear acoustic pulses that propagate along lipid interfaces and ...
Mussel, Matan, Schneider, Matthias F.
core   +3 more sources

Experimental validation of acoustic and thermal modeling in heterogeneous phantoms using the hybrid angular spectrum method

open access: yesInternational Journal of Hyperthermia, 2021
Purpose The aim was to quantitatively validate the hybrid angular spectrum (HAS) algorithm, a rapid wave propagation technique for heterogeneous media, with both pressure and temperature measurements.
Megan Hansen   +2 more
doaj   +1 more source

PbWO4 Acoustic Properties Measurement by Laser Ultrasonics with the Aim of Optical Damage Recovery

open access: yesCrystals, 2023
The paper, at first, discusses theoretical aspects of acoustic wave propagation in lead tungstate (PWO). After that, it introduces the application of laser ultrasonics to PWO crystals with the aim of measuring the acoustic properties and the absorbed ...
Luigi Montalto   +4 more
doaj   +1 more source

Sound Absorption of Tufted Carpets Produced from Coarse Wool of Mountain Sheep

open access: yesJournal of Natural Fibers, 2023
Coarse wool from Polish mountain sheep, often treated as a useless by-product of sheep husbandry, was used to produce pile carpets with tufting technique.
Jan Broda   +4 more
doaj   +1 more source

The acoustic properties of snores [PDF]

open access: yesEuropean Respiratory Journal, 1995
This study was undertaken in an attempt to characterize the acoustic properties of snoring sounds in the time and frequency domains, and to correlate between these properties and the mechanical events underlying their production. Three experimental set-ups were used: 1) Dog model--six mongrel dogs, in which partial upper airway obstruction was created ...
R, Beck, M, Odeh, A, Oliven, N, Gavriely
openaire   +2 more sources

Immediate Effects of Cervical Mobilization on Acoustic Properties and Performance in Voice Training Students

open access: yesInternational Journal of Traditional and Complementary Medicine Research, 2023
Objective: The aim of this study was investigation of immediate effects of cervical mobilization on acoustic properties and performance in voice training students. Material-Method: The research was conducted on 15 female volunteer students.
Satı Doğanyiğit   +2 more
doaj   +1 more source

Sound production in the Ponto-Caspian goby Neogobius fluviatilis and acoustic affinities within the Gobius-lineage: implications for phylogeny

open access: yesFrontiers in Marine Science, 2015
The aim of this work is to provide the vocal repertoire of the Ponto-Caspian goby Neogobius fluviatilis and to compare the acoustical properties of this species with those of the other soniferous Mediterranean gobies belonging to the so called “Gobius ...
Stefano Malavasi, Stefano Malavasi
doaj   +1 more source

Acoustic Property of NBRRI Interlocking Compressed Stabilized Earth Blocks (ICSEB): A Sustainable Alternative for Building Materials

open access: yesJournal of Sustainable Construction Materials and Technologies, 2023
This study uses a tested laterite soil composition to investigate the acoustic properties of interlocking compressive stabilized earth blocks (ICSEBs) produced by the Nigerian Building and Road Research Institute (NBRRI).
Timothy Danjuma   +2 more
doaj   +1 more source

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