Results 141 to 150 of about 2,739,672 (219)
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ACS Applied Materials and Interfaces, 2023
Electromagnetic radiation and noise pollution are two of the four major environmental pollution sources. Although various materials with excellent microwave absorption performances or sound absorption properties have been manufactured, it is still a ...
Susu Bao +5 more
semanticscholar +1 more source
Electromagnetic radiation and noise pollution are two of the four major environmental pollution sources. Although various materials with excellent microwave absorption performances or sound absorption properties have been manufactured, it is still a ...
Susu Bao +5 more
semanticscholar +1 more source
Small, 2023
To reduce electromagnetic interference and noise pollution within communication base stations and servers, it is necessary for electromagnetic wave absorption (EWA) materials to transition from coating to multifunctional devices.
Zijing Li, Limin Zhang, Hongjing Wu
semanticscholar +1 more source
To reduce electromagnetic interference and noise pollution within communication base stations and servers, it is necessary for electromagnetic wave absorption (EWA) materials to transition from coating to multifunctional devices.
Zijing Li, Limin Zhang, Hongjing Wu
semanticscholar +1 more source
Ultrathin Space‐Shift Phase‐Coherent Cancellation Metasurface for Broadband Sound Absorption
Small Methods, 2023A space‐shift phase‐coherent cancellation acoustic metasurface is developed, which can achieve broadband low‐frequency sound absorption via ultra‐thin integrated structure composed of multiple units with weak absorption capability.
Fuyin Ma +4 more
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Perfect low-frequency sound absorption of rough neck embedded Helmholtz resonators.
Journal of the Acoustical Society of America, 2022In this paper, an acoustic metamaterial, composed of rough neck embedded Helmholtz resonators, is proposed to achieve perfect sound absorption in the low-frequency range.
Lei Zhang, F. Xin
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Ultra-broadband sound absorption of a hierarchical acoustic metamaterial at high temperatures
, 2021We develop a hierarchical acoustic metamaterial with ultra-broadband sound absorption and promising applications at high temperatures as a super sound absorber.
Zhendong Li +4 more
semanticscholar +1 more source
Paramagnetic absorption of sound
Uspekhi Fizicheskih Nauk, 19611. Introduction 880 2. Resonant paramagnetic absorption of sound 881 3. Crystals containing ions of the iron group 881 4. Ions with an effective spin S' > 1/2 883 5. Effect on Ni2+ ions in an MgO crystal 885 6. Ions with effective spin S' = 1/2 886 7. Crystals containing ions of the rare earth elements 886 8.
A M Leushin +2 more
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Effects of absorption on the scattering of sound by sound
The Journal of the Acoustical Society of America, 1989The scattering of sound by sound in a lossless fluid was discussed at an earlier meeting [Berntsen et al., J. Acoust. Soc. Am. Suppl. 1 83, S4 (1988), and Darvennes and Hamilton, J. Acoust. Soc. Am. Suppl. 1 83, S4 (1988)]. Here, the effects of absorption are included.
Mark F. Hamilton +3 more
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Simplified Measurements of Sound Absorption
Transactions of the American Institute of Electrical Engineers, 1934A modification of the tube or reflected wave method for measuring the sound absorption coefficients of acoustic and building materials over a wide frequency range is described in this paper. Modern communication equipment is used, and a high degree of reliability is obtained.
Arthur L. Albert, Tom B. Wagner
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Acoustic labyrinthine porous metamaterials for subwavelength low-frequency sound absorption
, 2021An acoustic labyrinthine porous metamaterial (ALPM) or the so-called acoustic labyrinthine metaporous surface is designed for the subwavelength sound absorption by perforating folded slits in a porous material matrix.
Xuewei Liu +4 more
semanticscholar +1 more source
The Journal of the Acoustical Society of America, 1973
The exact solution for first order nonlinear scattering of two plane waves of sound [J. Acoust. Soc. Amer. 29, 934 0957)] showed the scattered density to be ρs = c0−2E12+12ω1−1ω2−1(cosθ+12Λ)[sin−2(12θ)]∇2W12. The singularity at θ = 0, which occurs when the primary waves are collinear, may be removed by applying to this solution the operator {1 − exp[(|∂
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The exact solution for first order nonlinear scattering of two plane waves of sound [J. Acoust. Soc. Amer. 29, 934 0957)] showed the scattered density to be ρs = c0−2E12+12ω1−1ω2−1(cosθ+12Λ)[sin−2(12θ)]∇2W12. The singularity at θ = 0, which occurs when the primary waves are collinear, may be removed by applying to this solution the operator {1 − exp[(|∂
openaire +2 more sources