Results 1 to 10 of about 2,920,919 (271)

A Kalman Filter Approach for Estimating Tendon Wave Speed from Skin-Mounted Accelerometers [PDF]

open access: yesSensors, 2022
Shear wave tensiometry is a noninvasive approach for assessing in vivo tendon forces based on the speed of a propagating shear wave. Wave speed is measured by impulsively exciting a shear wave in a tendon and then assessing the wave travel time between ...
Dylan G. Schmitz   +2 more
doaj   +2 more sources

Usefulness of Proximal Coronary Wave Speed for Wave Intensity Analysis in Diseased Coronary Vessels [PDF]

open access: yesFrontiers in Cardiovascular Medicine, 2020
Background: Wave speed is needed to separate net wave intensity into forward and backward traveling components. However, wave speed in diseased coronary arteries cannot be assessed from hemodynamic measurements obtained distal to a stenosis.
Lorena Casadonte   +3 more
doaj   +2 more sources

Dynamic processes in the oil pipelines. Part II. The leak identification by numerical methods [PDF]

open access: yesTransport, 2003
The analysis of identification method of leaks occurring due to damages of the linear part of the main oil pipelines is carried out. The momentum and continuity equations of viscous compressible fluid in a pressure pipeline are presented.
Ingrida BajoraitytÄ—   +1 more
doaj   +2 more sources

Dynamic processes in the main oil pipelines. Part I. The analysis of causes of leakage occurrence in oil pipelines and leak identification methods [PDF]

open access: yesTransport, 2002
The causes of accidental damages and the damages in oil pipelines are presented. The analysis of identification methods of leaks occurring due to the damages of the linear part of the main oil pipelines is carried out.
Ingrida BajoraitytÄ—   +1 more
doaj   +2 more sources

Bulk and Rayleigh Waves Propagation in Three-Phase Soil with Flow-Independent Viscosity

open access: yesApplied Sciences, 2022
The flow-independent viscosity of the soil skeleton has significant influence on the elastic wave propagation in soils. This work studied the bulk and Rayleigh waves propagation in three-phase viscoelastic soil by considering the contribution of the flow-
Qing Guo   +3 more
doaj   +1 more source

The Sumatra-Andaman Tsunami in Banda Aceh: A Linear Model for Representation

open access: yesREMAT, 2023
The Sumatra-Andaman earthquake that occurred on December 26, 2004 was the second largest earthquake in the past 40 years, with a moment magnitude of 9.1 - 9.3.
Jorge Corrêa de Araújo   +1 more
doaj   +1 more source

Identification of stages before and after damage strength and peak strength using acoustic emission tests

open access: yesYantu gongcheng xuebao, 2022
The damage strength and the peak strength are the important indexes for rock engineering. The two indexes identified by the acoustic emission (AE) tests are of high practical value in engineering application.
ZHAO Yun-ge , HUANG Lin-qi , LI Xi-bing
doaj   +1 more source

Feasibility of Using Non-Destructive Ultrasound Measurement Technique to Evaluate Binder Content of Asphalt Mixtures

open access: yesCivilEng, 2021
The non-destructive ultrasound technique is an easy and inexpensive technique widely used in industry to evaluate the properties of engineering materials.
Kazem Jadidi   +2 more
doaj   +1 more source

Viral Infection Spreading in Cell Culture with Intracellular Regulation

open access: yesMathematics, 2023
Virus plaque assays are conventionally used for the assessment of viral infections, including their virulence, and vaccine efficacy. These experiments can be modeled with reaction–diffusion equations, allowing the estimation of the speed of infection ...
Nikolay Bessonov   +3 more
doaj   +1 more source

Method for Determining the Sea Waves Curvature Using Wave Buoys Conventional Shape

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. Modern wave buoys due to their design make it possible to determine a directional wave spectrum using five coefficients of the Fourier series. However, up to nine members of the series can be determined from wave surface measurements.
K. A. Gleb
doaj   +1 more source

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