The aim of this paper is to prove the possible reproducibility of measurement with a new developed device for artery elasticity monitoring and determining the standard of major pulse wave parameters. As a measurement sensor, a conic probe with thin convex membrane was used. This technique allows setting an arbitrary pressure to a measured surface artery. We measured pulse waves on the radial ar...

Boise sandstone has a variety of grain diameter, and the heterogeneity makes it difficult to characterize. In this paper, model viscous squirt is used simulate velocity attenuation ultrasonic P-wave in saturated with water. Phase yielding from fitted against measured at frequency 500 kHz, which determinates quality factor due ( <m...

Abstract The quality of wave measurements is primary importance for the validation forecasting models, satellite calibration and validation, physics, offshore operations design climate monitoring. Validation global forecasts revealed significant regional differences, which were linked to different buoy systems used by countries. To fully understand differences between measurement systems, it ne...

earthquakes travel times inversion for determination of velocity structure of crust is one of the most important objectives in seismology. in the simultaneous inversion method, the parameters of earthquakes and velocity model are determined initially and are improved during inversion steps. in this study, we have used more than 22000 calculated travel times for first arrivals of 6000 earthquake...

local site conditions have a strong effect on ground response during earthquakes. two important soil parameters that control the amplification effects of seismic motions by a soil column are the soil hysteretic damping ratio and shear wave velocity. this paper presents the results of in situ damping ratio measurements performed using continuous surface wave attenuation data at a site in semnan ...