Results 51 to 60 of about 61,780 (267)
Experimental and numerical investigation of wave attenuation by emergent flexible vegetation
Applied Ocean ResearchWave attenuation by flexible vegetation is attracting increasing scholarly attention due to its coastal protection and ecological benefits. Although satisfactory progress has been made in understanding flexible vegetation dynamics and the resulting wave ...
Kai Yin +4 more
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Arthritis Care &Research, EarlyView.Interstitial lung disease (ILD) is a significant cause of morbidity and mortality in patients with inflammatory rheumatic disorders (IRDs). High‐resolution computed tomography (HRCT) is widely considered the gold standard for the noninvasive assessment of ILD; however, its interpretation is constrained by substantial interobserver variability and the ...
Alexander Pfeil +7 more
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Journal of Marine Science and Engineering, 2021 Wave attenuation performance is the prime consideration when designing any floating breakwater. For a 2D hydrodynamic analysis of a floating breakwater, the wave attenuation performance is evaluated by the transmission coefficient, which is defined as ...
Huu Phu Nguyen +6 more
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Attenuation of ultrasonic waves in rolled metals
The Journal of the Acoustical Society of America, 2004 Scattering of ultrasonic waves in polycrystals with texture is studied in this article. The attenuations of the three wave modes are determined as a function of dimensionless frequency and propagation direction, respectively, for given orientation distribution coefficients (ODCs).
Yang, Liyong, Turner, Joseph A.
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Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
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Attenuation of Magnetohydrodynamic Waves
The Astrophysical Journal, 1997 The existence of viscosity, thermal conductivity, and electrical resistivity results in the dissipation of energy in MHD waves; the wave energy is consequently absorbed and the wave amplitude progressively attenuated. Dissipation mechanisms cause the amplitude of the waves to vary slowly over a large scale length L.
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Stress wave attenuation in shock‐damaged rock [PDF]
Journal of Geophysical Research: Solid Earth, 1996 The velocity and attenuation of ultrasonic stress waves in gabbroic rock samples (San Marcos, California) subjected to shock loading in the 2 GPa range were studied. Prom P wave velocity measurements we determined the damage parameter Dp and crack density ε of the samples and related these to the attenuation coefficient (quality factor) under dynamic ...
Luo, Cangli, Ahrens, Thomas J.
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Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying
Advanced Engineering Materials, EarlyView.An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara +8 more
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Meitan kexue jishuPersonnel search and localization constitute the fundamental aspects of mine rescue operations. Ultra-Wide Band (UWB) radar technology possesses the capability to penetrate non-magnetic media, including masonry walls, coal, and rock, thereby enabling the
Xuezhao ZHENG +6 more
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Energy Science & Engineering, 2022 The advanced deep hole blasting (ADHB) is commonly used to improve the fragmentation of thick hard top coal in longwall top coal caving (LTCC) mining. This paper presents an acoustic method to quantitatively evaluate the effectiveness of the ADHB. First,
Tielin Zhao, Yuliang Zhou, Shengyuan Gao
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