Results 31 to 40 of about 1,493,631 (236)
FROM SEA TO SURGERIES, FROM BABBLING BROOKS TO BABY SCANS: BUBBLE ACOUSTICS AT ISVR
Spring Conference Acoustics 2004, 2023 Ultrasound is passed through liquids and tissue both for diagnostic reasons, and in order to produce a material change. The most familiar diagnostic application is the external foetal scanning that is routine in many pregnancies.
TG Leighton
semanticscholar +1 more source
Coherent perfect absorption at an exceptional point [PDF]
Science, 2021 Description Absorbingly exceptional Most oscillating systems have a resonance or multiple resonances at which they ring out and are most sensitive to excitation. In non-Hermitian systems, open systems with gain and loss, the resonances have been found to
Changqing Wang +3 more
semanticscholar +1 more source
Photoacoustic Imaging in Biomedicine and Life Sciences
Life, 2022 Photo-acoustic imaging, also known as opto-acoustic imaging, has become a widely popular modality for biomedical applications. This hybrid technique possesses the advantages of high optical contrast and high ultrasonic resolution.
Alexey Neprokin +4 more
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An archaeoacoustic study on shape: the case study of the Iffland Theatre’s history (1802–1817)
Acta Acustica, 2023 Previous studies have discussed six pre-Sabine quantifiable guidelines employed in room acoustic design: voice directivity, audience rake, “echo theory”, stage acoustics, reverberation, and length, width, and height ratios.
Postma Barteld N.J., Katz Brian F.G.
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Perfect Absorption in Mirror-Symmetric Acoustic Metascreens [PDF]
Physical Review Applied, 2020 Mirror-symmetric acoustic metascreens producing perfect absorption independently of the incidence side are theoretically and experimentally reported in this work. The mirror-symmetric resonant building blocks of the metascreen support symmetric and antisymmetric resonances that can be tuned to be at the same frequency (degenerate resonances).
V. Romero-García +7 more
openaire +6 more sources
Low-Frequency Broadband Acoustic Metasurface Absorbing Panels
Frontiers in Mechanical Engineering, 2020 A broadband sound absorption attained by a deep-subwavelength structure is of great interest to the noise control community especially for extremely low frequencies (20–100 Hz) in room acoustics.
Jun Ji +4 more
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Nonlinear acoustic and microwave absorption in glasses [PDF]
Physical Review B, 1997 A theory of weakly-nonlinear low-temperature relaxational absorption of acoustic and electromagnetic waves in dielectric and metallic glasses is developed. Basing upon the model of two-level tunneling systems we show that the nonlinear contribution to the absorption can be anomalously large.
Martin Kirkengen, Yu. M. Galperin
openaire +3 more sources
Study and Improvement of Acoustic Conditions in Public Spaces of Shopping Malls
Acoustics, 2021 Acoustic comfort in shopping malls is one of the aspects that influence the shopping environment. Making enjoyable and comfortable retail and public spaces is demanded when designing and managing properties.
Nikolay Kanev
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SPATIAL ANALYSIS OF THE ACOUSTICS OF ROCK CLUBS AND NIGHTCLUBS
Auditorium Acoustics 2015, 2023 Previously, the acoustics of rock and pop venues has been studied in terms of standard single microphone acoustic parameters1,2,3,4. A study from 20104 finds appropriate reverberation times for rock and pop venues by correlating the musicians’ and sound ...
S. Tervo +4 more
semanticscholar +1 more source
Acoustic absorption by sunspots
The Astrophysical Journal, 1987 The paper presents the initial results of a series of observations designed to probe the nature of sunspots by detecting their influence on high-degree p-mode oscillations in the surrounding photosphere. The analysis decomposes the observed oscillations into radially propagating waves described by Hankel functions in a cylindrical coordinate system ...
Barry J. Labonte +2 more
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