Results 21 to 30 of about 165,150,859 (278)

High-resolution acoustically informed maps of sound speed [PDF]

open access: yesJASA Express Letters
As oceanographic models advance in complexity, accuracy, and resolution, in situ measurements must provide spatiotemporal information with sufficient resolution to inform and validate those models.
Scott Loranger   +4 more
doaj   +1 more source

ON THE SPEED OF SOUND IN STEAM

open access: yesActa Polytechnica, 2015
A study of the speed of sound in a pure water substance is presented here. The IAPWS data on the state of water and steam are applied only for investigating the speed of sound for a one-phase medium.
Pavel Šafarík   +3 more
doaj   +1 more source

Adaptive dual-speed ultrasound and photoacoustic computed tomography

open access: yesPhotoacoustics, 2022
Full-ring dual-modal ultrasound and photoacoustic computed tomography has unique advantages of nearly isotropic spatial resolution, complementary contrast, deep penetration, and full-view detection. However, the imaging quality may be deteriorated by the
Yachao Zhang, Lidai Wang
doaj   +1 more source

A Method for Full-Depth Sound Speed Profile Reconstruction Based on Average Sound Speed Extrapolation

open access: yesJournal of Marine Science and Engineering
The speed of sound in seawater plays a crucial role in determining the accuracy of multibeam bathymetric measurements. In deep-sea multibeam measurements, the challenge of inadequate longitudinal coverage of sound speed profiles arises from variations in
Wei Zhang   +4 more
doaj   +1 more source

Estimation of bulk modulus of DME on the basis of the sound speed measurement in a wide range of pressures and temperatures including the critical point

open access: yesNihon Kikai Gakkai ronbunshu, 2018
Sound speed is one of the most important thermodynamic properties for developing a fuel injection system and it is often used to validate the equation of state.
Shinsuke KIKUCHI   +7 more
doaj   +1 more source

Sound Source Localisation for a High-Speed Train and Its Transfer Path to Interior Noise

open access: yesChinese Journal of Mechanical Engineering, 2019
Noise is one of the key issues in the operation of high-speed railways, with sound source localisation and its transfer path as the two major aspects. This study investigates both the exterior and interior sound source distribution of a high-speed train ...
Jie Zhang   +3 more
doaj   +1 more source

The Effect of some Weather Factors on the Speed of the Sound Waves Inside the Surface Boundary Layer in Baghdad City [PDF]

open access: yesEngineering and Technology Journal, 2017
In this work the sound speed has been measured by a fast response anemometer in the surface boundary layer also the temperature and relative humidity has been measured to the same zoon then we tray to make a description to the relation between the sound ...
A. G. Mutar, N. A. Mohammed
doaj   +1 more source

Relative Humidity Measurement of Air in Low-Temperature Ranges Using Low-Frequency Acoustic Waves and Correlation Signal Processing Techniques

open access: yesSensors, 2022
Air relative humidity (RH) is an important control parameter in many industrial processes. The acoustic method is a novel technique to measure air humidity non-intrusively. Relevant research is limited.
Miao Guo, Yue Li, Jingmin Gao
doaj   +1 more source

A nationwide student survey on biochemistry learning resources in Italy

open access: yesFEBS Open Bio, EarlyView.
We conducted a survey among Italian university students to investigate their preferred study materials for biochemistry. We then analyzed the collected data to identify these materials. This information may be valuable to the Biochemistry educational community. The graphical abstract was created with Claude (Opus 5.5; Anthropic, 2026).
Anna Marabotti   +4 more
wiley   +1 more source

Elevated Connectivity During Language Processing Is Associated With Cognitive Performance in SeLECTS

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Self‐Limited Epilepsy with Centrotemporal Spikes (SeLECTS) is associated with language impairments despite seizures originating in the motor cortex, suggesting aberrant cross‐network interactions. Here we tested whether functional connectivity in SeLECTS during language tasks predicts language performance.
Wendy Qi   +8 more
wiley   +1 more source

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