Results 31 to 40 of about 435,363 (293)
Physiological Reports, 2021 We hypothesized that volume changes during 48‐h are associated with different circadian patterns of arterial stiffness on non‐dialysis day compared to dialysis day and that the night‐time increase of arterial stiffness is associated with higher mortality.
Vedran Premužić, Bojan Jelaković
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Controlling the Velocity of Light Pulses [PDF]
Science, 2009 Blod Blod.
Robert W, Boyd, Daniel J, Gauthier
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Hemodialysis Parameters and Pulse Wave Velocity
International Journal of Applied & Basic Medical Research, 2022 Abstract Aim: The study aimed to evaluate the acute effect of ultrafiltration on the mechanical properties of the aorta using brachial-ankle pulse wave velocity (PWV) before and after hemodialysis (HD). Patients and Methods: This study included 80 patients who were on a ...
Miseljic, Sanja +9 more
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Dizhen xuebao, 2018 为了研究速度脉冲型地震动的最强速度脉冲方向分量与垂直或平行断层方向分量之间的特性差异，本文采用多分量速度脉冲识别方法从NGA-West2强震动数据库的236组近断层地震动速度脉冲记录中提取出最强速度脉冲方向分量，对其脉冲参数随震级MW和断层距R变化的统计关系式进行了回归分析，并对比了最强速度脉冲方向分量与垂直或平行断层方向分量之间的特性差异。研究结果表明：当R＜30 km时，最强速度脉冲方向分量的脉冲幅值预测值较垂直或平行断层方向分量的预测值大，而当R＞30 km时，两种分量的脉冲幅值预测值相差不大 ...
Xiaofen Zhao, Zengping Wen, Bo Chen
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Scattering of a Plane Acoustical Wave by a Spherical Obstacle [PDF]
, 1965 The long-time behavior of the scattered field produced by a plane acoustical pulse stalking a spherical obstacle is investigated. Incident pulses are taken that represent a unit step in potential (or equivalently delta function pulse in pressure), an ...
Cohen, Donald S., Handelman, George H.
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Evaluating Asphalt Concrete Properties by the Implementation of Ultrasonic Pulse Velocity
Journal of Engineering, 2020 In past years, structural pavement solution has been combined with destructive testing; these destructive methods are being replaced by non-destructive testing methods (NDT).
Nazar sajad kadium, Saad Isaa Sarsam
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Assessment of Concrete Compressive Strength by Ultrasonic Non-Destructive Test [PDF]
E3S Web of Conferences, 2021 This paper has carried out an experimental program to establish a relatively accurate relation between the ultrasonic pulse velocity (UPV) and the concrete compressive strength.
Said AbdulMuttalib I. +1 more
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Using electric fields for pulse compression and group velocity control
, 2016 In this article, we experimentally demonstrate a new way of controlling the group velocity of an optical pulse by using a combination of spectral hole burning, slow light effect and linear Stark effect in a rare-earth-ion-doped crystal.
Kinos, Adam +4 more
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Ambulatory Pulse Wave Velocity Monitoring [PDF]
Hypertension, 2017 See related article, pp 148–157 The role of office and ambulatory 24-hour measurement of brachial blood pressure (BP) on the assessment and prediction of cardiovascular risk and mortality has been well established. In addition, the independent predictive value of office measurement of carotid-to-femoral pulse wave velocity (PWV), a surrogate of ...
Theodore G, Papaioannou +2 more
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Causality in Propagation of a Pulse in a Nonlinear Dispersive Medium
, 2004 We investigate the causal propagation of the pulse through dispersive media by very precise numerical solution of the coupled Maxwell-Bloch equations without any approximations about the strength of the input field.
Brillouin L +2 more
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