Results 1 to 10 of about 1,372,433 (300)
Phase Velocity of Facial Blood Volume Oscillation at a Frequency of 0.1 Hz [PDF]
Frontiers in Physiology, 2021 Facial blood flow, which typically exhibits distinctive oscillation at a frequency of around 0.1 Hz, has been extensively studied. Although this oscillation may include important information about blood flow regulation, its origin remains unknown.
Kenichiro Yoshida, Izumi Nishidate
doaj +2 more sources
New Surface-Plasmon-Polariton-Like Acoustic Surface Waves at the Interface Between Two Semi-Infinite Media [PDF]
Archives of Acoustics, 2022 This paper presents theory of new shear horizontal (SH) acoustic surface waves that propagate along the interface of two semi-infinite elastic half-spaces, one of which is a conventional elastic medium and a second one an elastic metamaterial with a ...
Piotr Kiełczyński
doaj +1 more source
A review of the wave gradiometry method for seismic imagingKey points
Earthquake Science, 2023 As dense seismic arrays at different scales are deployed, the techniques to make full use of array data with low computing cost become increasingly needed.
Chuntao Liang +3 more
doaj +1 more source
Sensors, 2022 The 2D-FFT is described as a traditional method for signal processing and analysis. Due to the possibility to determine the time and frequency (t,f) domains, such a method has a wide application in various industrial fields.
Lina Draudvilienė +4 more
doaj +1 more source
IEEE Transactions on Neural Systems and Rehabilitation Engineering, 2022 Due to the high robustness to artifacts, steady-state visual evoked potential (SSVEP) has been widely applied to construct high-speed brain-computer interfaces (BCIs).
Jiayang Huang +5 more
doaj +1 more source
Investigation the acoustic behavior of poplar and spruce species reaction wood using ultrasonic technique [PDF]
تحقیقات علوم چوب و کاغذ ایران, 2012 The acoustic behavior of reaction and normal woods, phase velocity, group velocity and attenuation coefficients in the main directions for two wood species (Populus deltoids & Picea abies), were measured and compared.
Mohammad ali Sadat nia +4 more
doaj +1 more source
Геофизический журнал, 2020 In this article, authors developed a method for estimating the Floquet waves velocity dispersion in a periodic horizontally layered medium with anisotropic layers.
Yu. V. Roganov +2 more
doaj +1 more source
Energies, 2021 Natural gas hydrate is a new clean energy source in the 21st century, which has become a research point of the exploration and development technology. Acoustic well logs are one of the most important assets in gas hydrate studies.
Lin Liu, Xiumei Zhang, Xiuming Wang
doaj +1 more source
Numerical modelling and theoretical analysis of the acoustic attenuation in bubbly liquids
Engineering Applications of Computational Fluid Mechanics, 2023 The propagations of acoustic waves in bubbly liquids have been extensively investigated through experimental and theoretical methods, a computational fluid dynamics (CFD) method was introduced to investigate the acoustic attenuation through bubbles in ...
Yanghui Ye +6 more
doaj +1 more source
IEEE Access, 2020 The work presents the metrological evaluation of the modified hybrid spectrum decomposition and zero-crossing technique. The presented technique enables to reconstruct the phase velocity dispersion curve part of Lamb wave modes using only two signals ...
Lina Draudviliene +4 more
doaj +1 more source