Results 51 to 60 of about 147,257 (198)

Density fluctuations in the intermediate glass-former glycerol: a Brillouin light scattering study

, 2003
Brillouin scattering has been used to measure the dynamic structure factor of glycerol as a function of temperature from the high temperature liquid to the glassy state.
Comez, Lucia, Fioretto, Daniele, Monaco, Giulio, Scarponi, Filippo   +3 more
core   +1 more source

Numerical Prediction of the Tonal Airborne Noise for a NACA 0012 Aerofoil at Moderate Reynolds Number Using a Transitional URANS Approach

Archives of Acoustics, 2017
Tonal airborne noise of aerofoils appears in a limited range of moderate Reynolds numbers and angles of attack. In these specific conditions, the aerofoil is characterised by a large region of laminar flow over the aerodynamic surface, typically ...
Michele DE GENNARO, Helmut KÜHNELT, Alessandro ZANON   +2 more
doaj   +1 more source

Spallative ablation of dielectrics by X-ray laser

, 2009
Short laser pulse in wide range of wavelengths, from infrared to X-ray, disturbs electron-ion equilibrium and rises pressure in a heated layer. The case where pulse duration $\tau_L$ is shorter than acoustic relaxation time $t_s$ is considered in the ...
A. Miotello, A. Ritucci, A. Ustione, A. Y. Faenov, A.K. Upadhyay, A.Y. Vorobyev, A.Ya. Faenov, A.Ya. Faenov, B. Rethfeld, B.C. Stuart, D. Linde von der, D. Puerto, F. Quere, G. Baldacchini, G. Baldacchini, G. Tomassetti, I. Y. Skobelev, J. Bonse, J. Chalupsky, J. Krzywinski, K. Sokolowski-Tinten, K. Sokolowski-Tinten, L.D. Landau, L.V. Zhigilei, M. Ishino, M. Kishimoto, M. Nishikino, M. Nishikino, M. Tanaka, M.B. Agranat, N. A. Inogamov, N. Stojanovic, N.A. Inogamov, N.A. Inogamov, N.A. Inogamov, N.A. Inogamov, P. Lorazo, S. Eliezer, S. I. Anisimov, S. V. Bulanov, T. A. Pikuz, T. Kawachi, V. A. Khokhlov, V. E. Fortov, V. V. Shepelev, V. V. Zhakhovsky, V.E. Fortov, V.V. Zhakhovskii, V.V. Zhakhovskii, V.V. Zhakhovskii, W.-L. Chan, W.H. Duff, Y. Fukuda, Y. Kato, Y. V. Petrov   +54 more
core   +1 more source

Prediction of Target-Induced Multipath Interference Acoustic Fields in Shallow-Sea Ideal Waveguides and Statistical Characteristics of Waveguide Invariants

Journal of Marine Science and Engineering
The acoustic scattering of targets in shallow-sea waveguides exhibits complex features such as multipath propagation and intricate echo components, with its acoustic field properties remaining incompletely understood.
Yuanhang Zhang, Peizhen Zhang, Jincan Li
doaj   +1 more source

A Dual-Stream Deep Learning-Based Acoustic Denoising Model to Enhance Underwater Information Perception

Remote Sensing
Estimating the line spectra of ship-radiated noise is a crucial remote sensing technique for detecting and recognizing underwater acoustic targets. Improving the signal-to-noise ratio (SNR) makes the low-frequency components of the target signal more ...
Wei Gao, Yining Liu, Desheng Chen
doaj   +1 more source

Application of Fractional Fourier Transform for Prediction of Ball Mill Loads Using Acoustic Signals

IEEE Access, 2019
In cement plant and power plant, ball mills remain in current and widespread use. The load parameter inside a ball mill directly impacts the stability of the production process, the grinding production rate, and the quality of the product in the grinding
Jianquan Shi, Gangquan Si, Yanbin Zhang
doaj   +1 more source

Baryon Oscillations and Consistency Tests for Photometrically-Determined Redshifts of Very Faint Galaxies

, 2005
Weak lensing surveys that can potentially place strong constraints on dark energy parameters can only do so if the source redshift means and error distributions are very well known.
Dolney D., Hu Zhan, Huterer D., Kaiser N., Lloyd Knox   +4 more
core   +1 more source

Observations of thermohaline sound-speed structure induced by internal waves and spice in the summer 2015 Canada Basin marginal ice zone

Elementa: Science of the Anthropocene, 2018
The Arctic seas are in a period of transition as they adjust to stimuli from anthropogenic climate change. The acoustic response to this adjustment is of fundamental interest, as acoustics provide an important means for Arctic remote sensing ...
Dominic DiMaggio, John A. Colosi, John Joseph, Annalise Pearson, Peter F. Worcester, Matthew A. Dzieciuch   +5 more
doaj   +1 more source

Isoperiodic deformations of the acoustic operator and periodic solutions of the Harry Dym equation

, 2007
We consider the problem of describing the possible spectra of an acoustic operator with a periodic finite-gap density. We construct flows on the moduli space of algebraic Riemann surfaces that preserve the periods of the corresponding operator.
A. P. Veselov, A. P. Veselov, C. Rogers, D. V. Zakharov, E. I. Dinaburg, H. Knörrer, I. M. Krichever, J. Moser, L. A. Dmitrieva, L. A. Dmitrieva, L. A. Dmitrieva, N. M. Ercolani, P. G. Grinevich, S. Tanveer, V. A. Marcenko, V. E. Zakharov   +15 more
core   +2 more sources

Properties of high-frequency wave power halos around active regions: an analysis of multi-height data from HMI and AIA onboard SDO

, 2012
We study properties of waves of frequencies above the photospheric acoustic cut-off of $\approx$5.3 mHz, around four active regions, through spatial maps of their power estimated using data from Helioseismic and Magnetic Imager (HMI) and Atmospheric ...
A. Fossum, A.A. Norton, B. Fleck, B.W. Hindman, B.W. Lites, C. Nutto, C.G. Toner, C.S. Rosenthal, D. Kuridze, D.C. Braun, E. Khomenko, E. Khomenko, E. Khomenko, E. Khomenko, E. Khomenko, E. Khomenko, F. Hill, G. Vigeesh, H. Schunker, H. Schunker, H. Schunker, J.H. Borrero, J.H. Thomas, J.R. Lemen, K. Hayashi, K. Libbrecht, K. Nagashima, K.D. Leka, L. Jacoutot, O.V. Ladenkov, P. Kumar, P. Kumar, P. Kumar, P.F. Moretti, P.H. Scherrer, P.S. Cally, R. Jain, R. Nigam, S. Couvidat, S. P. Rajaguru, S. Shelyag, S.M. Hanasoge, S.M. Hanasoge, S.P. Rajaguru, S.P. Rajaguru, T.J. Bogdan, T.J. Bogdan, T.M. Brown, T.R. Metcalf, T.R. Metcalf, W. Finsterle, Xudong Sun   +51 more
core   +1 more source