Acoustic impedance prediction based on extended seismic attributes using multilayer perceptron, random forest, and extra tree regressor algorithms
Sign Up to like & getrecommendations! Published in 2024 at "Journal of Petroleum Exploration and Production Technology"
DOI: 10.1007/s13202-024-01795-7
Abstract: Acoustic impedance is the product of the density of a material and the speed at which an acoustic wave travels through it. Understanding this relationship is essential because low acoustic impedance values are closely associated… read more here.
Keywords: extra tree; acoustic impedance; impedance; seismic attributes ... See more keywords
Assessing the sound of a woodwind instrument that cannot be played
Sign Up to like & getrecommendations! Published in 2019 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2018.08.028
Abstract: Abstract Historical woodwind instruments in museums or private collections often cannot be played, by virtue of their poor condition or the risk of damage. Acoustic impedance measurements may usually be performed on instruments in good… read more here.
Keywords: sound woodwind; impedance; condition; woodwind instrument ... See more keywords
Design and experimental evaluation of a travelling wave thermoacoustic engine
Sign Up to like & getrecommendations! Published in 2020 at "Energy Reports"
DOI: 10.1016/j.egyr.2020.11.002
Abstract: Abstract In a thermoacoustic engine, acoustic impedance plays a key role to improve the system performance. A matching stub is a component which can be applied to adjust the acoustic impedance. In this study, the… read more here.
Keywords: experimental evaluation; engine; travelling wave; design experimental ... See more keywords
Acoustic impedance of perforated plates in the presence of fully developed grazing flow
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2020.115547
Abstract: Abstract The perforated components are widely used in the intake and exhaust mufflers. The coupling between instable shear layer and acoustic fluctuation has a significant influence on the acoustic impedance of perforated components. To obtain… read more here.
Keywords: impedance perforated; perforated plates; grazing flow; impedance ... See more keywords
Analysis and validation of two mathematical models of acoustic impedance in well logs: An example in Namorado oilfield, Campos basin, Brazil
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Petroleum Science and Engineering"
DOI: 10.1016/j.petrol.2017.08.080
Abstract: Abstract This paper is concerned with the reliability of two different models to compute acoustic impedances in the Namorado oilfield, Campos Basin, Brazil. The acoustic impedance is a physical property related to the interaction of… read more here.
Keywords: campos basin; oilfield campos; namorado oilfield; impedance ... See more keywords
A novel method for plastic particle sizing in suspension based on acoustic impedance spectrum
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2017.01.024
Abstract: &NA; The objective of this paper is to explore the relationship between the characteristics of plastic particles in suspension and acoustic impedance spectrum and to present a novel non‐invasive methodology for both spherical and non‐spherical… read more here.
Keywords: particle sizing; particle; impedance; acoustic impedance ... See more keywords
Determining sodium diffusion through acoustic impedance measurements using 80 MHz Scanning Acoustic Microscopy: Agarose phantom verification
Sign Up to like & getrecommendations! Published in 2019 at "Ultrasonics"
DOI: 10.1016/j.ultras.2018.12.013
Abstract: HighlightsVerification of sodium diffusion by time‐dependent acoustic impedance measurements.A linear relationship between the sodium concentration and its acoustic impedance.80 MHz SAM applicability for static and dynamic investigations of sodium ion. ABSTRACT The purpose of this… read more here.
Keywords: acoustic impedance; agarose phantom; sodium diffusion; microscopy ... See more keywords
Acoustic impedance measurement of tissue mimicking materials by using scanning acoustic microscopy.
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics"
DOI: 10.1016/j.ultras.2020.106274
Abstract: Tissue-mimicking materials (TMMs) play a key role in the quality assurance of ultrasound diagnostic equipment and should have acoustic properties similar to human tissues. We propose a method to quantify the acoustic properties of TMM… read more here.
Keywords: acoustic impedance; tissue mimicking; mimicking materials; microscopy ... See more keywords
Self-Enhanced Acoustic Impedance Difference Strategy for Detecting the Acidic Tumor Microenvironment.
Sign Up to like & getrecommendations! Published in 2022 at "ACS nano"
DOI: 10.1021/acsnano.1c10173
Abstract: B-mode ultrasound imaging is a significant anatomic technique in clinic, which can display the anatomic variation in tissues. However, it is difficult to evaluate the functional state of organs and display the physiological information in… read more here.
Keywords: impedance difference; acoustic impedance; strategy; self ... See more keywords
Acoustic impedance inversion via voting stacked regression (VStaR) algorithms
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DOI: 10.1038/s41598-025-06332-y
Abstract: In this study, we focused on improving acoustic impedance (AI) in seismic exploration. AI is a crucial parameter estimated by multiplying the density of a material by the velocity of an acoustic wave passing through… read more here.
Keywords: acoustic impedance; documentclass 12pt; document; vstar ... See more keywords
XGBoost regression for robust acoustic impedance prediction in the absence of density and sonic logs
Sign Up to like & getrecommendations! Published in 2025 at "Scientific Reports"
DOI: 10.1038/s41598-025-24727-9
Abstract: Acoustic impedance (Z) is a fundamental parameter in geophysical subsurface characterization, governing seismic reflection coefficients and enabling reservoir property quantification through seismic inversion. Conventional derivation of Z relies on density (ρ) and P-wave velocity (Vp)… read more here.
Keywords: acoustic impedance; impedance; regression robust; porosity ... See more keywords