Results 11 to 20 of about 38,375 (314)

Shear-Wave Velocity Prediction Method via a Gate Recurrent Unit Fusion Network Based on the Spatiotemporal Attention Mechanism [PDF]

open access: yes, 2022
Compression-wave velocity and shear-wave velocity are important elastic parameters describing deeply tight sandstone. Limited by cost and technical reasons, the conventional logging data generally lack shear-wave velocity.
Yonggen Li   +6 more
core   +1 more source

Reverse Time Migration Imaging Using SH Shear Wave Data

open access: yesApplied Sciences, 2022
In this paper, we discussed the reverse time migration imaging of compressional wave (P-wave) and horizontally polarized shear wave (SH shear wave) seismic data, together with P- and SH shear wave constrained velocity model building. In the Sanhu area in
Chengyao Zhou   +4 more
doaj   +1 more source

Studying Disturbance Wave Velocity and Wall Shear Stress of Vertical Upward Annular Flow in Narrow Rectangular Channel

open access: yesScience and Technology of Nuclear Installations, 2021
As two important parameters, the velocity of disturbance wave and the wall shear stress in annular flow are very important to solve the closed equations of the mechanical model for annular flow. In this study, the disturbance wave velocity and wall shear
Antai Liu   +4 more
doaj   +1 more source

Evaluation indicators of saturation on partially saturated sand induced by microbial gas

open access: yesCase Studies in Construction Materials, 2022
The induced partial saturation (IPS) technique introduces a certain amount of air/gas into soil voids to mitigate sand liquefaction. The microbial desaturation method utilises biological metabolic processes which are good for environmental protection and
Meitong Lv, Dingwen Zhang, Haoming Ren
doaj   +1 more source

Indirect determination of shear wave velocity in slow formations using full-wave sonic logging technique

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2020
This article presents a case study concerning a seismic characterization project. Full-wave sonic logging was used to characterize the shallow compressional wave and shear wave velocity profiles in the site.
Francisco Beltran   +2 more
doaj   +1 more source

Determination of Empirical Correlations between Shear Wave Velocity and Penetration Resistance in the Canakkale Residential Area (Turkey)

open access: yesApplied Sciences, 2023
One of the most important parameters used to determine the dynamic properties of soil layers is the shear wave velocity. In geotechnical earthquake engineering, the shear wave velocity is used to determine the shear modulus, which provides the input ...
Mehmet Celal Tunusluoglu
doaj   +1 more source

Evaluation of State of Fine Sands on the Basis of Shear Wave Velocity [PDF]

open access: yesArchives of Civil Engineering, 2020
The paper presents an approach to identify the state of fine sands on the basis of shear wave velocity measurement. Large body of experimental data was used to derive formulae which relate void ratio with shear wave velocity and mean effective stress for
Mirosław J. Lipiński   +1 more
doaj   +1 more source

Cardiac Shear Wave Velocity Detection in the Porcine Heart [PDF]

open access: yesUltrasound in Medicine & Biology, 2017
Cardiac muscle stiffness can potentially be estimated non-invasively with shear wave elastography. Shear waves are present on the septal wall after mitral and aortic valve closure, thus providing an opportunity to assess stiffness in early systole and early diastole.
Vos, H.J. (author)   +7 more
openaire   +7 more sources

Assessing the liquefaction potential of seabed soils based on ocean ambient noise in the Yellow River Delta

open access: yesFrontiers in Marine Science, 2023
Seabed soils can undergo liquefaction under cyclic loading, resulting in a rapid decrease in strength and stiffness, which may lead to the destruction of offshore structures.
Yang Li   +5 more
doaj   +1 more source

Regional assessments of supraspinatus muscle stiffness in normal adults using shear wave elastography

open access: yesHeliyon, 2023
Objectives: To provide normal references for regional shear wave elastography assessments of supraspinatus muscle in a population. Methods: Shear wave elastography images of supraspinatus muscles were evaluated on 100 shoulders of 50 normal adults in a ...
Lan Jiang   +5 more
doaj   +1 more source

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