Results 51 to 60 of about 25,472,092 (301)

Numerical Investigation on the Response Characteristics of Hypersonic Boundary Layer under Different Types of Finite Amplitude Pulse Disturbance Waves

Journal of Applied Fluid Mechanics, 2021
The hypersonic transient flow pass a blunt cone under three types of pulse disturbances is calculated using DNS. The response characteristic of hypersonic boundary layer among different types of pulse disturbance is compared.
X. Tang, J. Yu, H. Zhang, H. Li, M. Shi
doaj  

Pulse wave extraction and dual domain analysis

Dianzi Jishu Yingyong, 2019
Two methods for measuring pulse wave using either a pressure or an optical sensor are studied and compared. A model for determining the optimal external force for restraining the pressure sensor is proposed. Pulse waves are measured on 20 volunteers. The
Wang Qian, Xu Yajie, Zeng Guoqiang, Sun Mingshan   +3 more
doaj   +1 more source

Pulse wave analysis and pulse wave velocity techniques: are they ready for the clinic? [PDF]

Hypertension Research, 2010
interestingly describe animportant factor when arterial stiffness is clini-cally assessed: subject’s body position. Althoughthis is an important question, especially ifwe want to bring this research tool to the clinicin a regular basis, there are several other factorsthat should be considered.
Alvaro N, Gurovich, Randy W, Braith
openaire   +2 more sources

Aortic pulse wave velocity and augmentation index@75 measured by oscillometric pulse wave analysis in Gujarati nonhypertensives

Vascular Investigation and Therapy, 2018
BACKGROUND: Augmentation indexes (AIxs) and pulse wave velocity (PWV) are arterial stiffness parameters. They can be studied by pulse wave analysis (PWA) noninvasively.
Jayesh Dalpatbhai Solanki, Hemant B Mehta, Chinmay J Shah   +2 more
doaj   +1 more source

Multi-mode coupling wave theory for helically corrugated waveguide [PDF]

, 2012
Helically corrugated waveguide has been used in various applications such as gyro-backward wave oscillators, gyro-traveling wave amplifier and microwave pulse compressor.
Zhang, Liang, Donaldson, Craig R., He, Wenlong, Young, Alan R., Whyte, Colin G., Robertson, Craig W., Cross, Adrian W., Phelps, Alan D. R., Ronald, Kevin   +8 more
core   +3 more sources

Wrist Photoplethysmography Pulse Waves: Morphological Classes and Physiological Influences

Engineering Proceedings
Wearables such as smartwatches provide opportunity for large-scale cardiovascular health monitoring. Wearables often use photoplethysmography (PPG), an optical sensing technique, to measure the arterial pulse wave and derive insights into cardiovascular ...
Adrian Dendorfer, Peter H. Charlton
doaj   +1 more source

Pulse wave analysis using the Mobil-O-Graph, Arteriograph and Complior device: a comparative study

Blood Pressure, 2019
Purpose: Pulse wave velocity (PWV) is a marker of arterial stiffness with major prognostic value. We compared Arteriograph and Complior devices with the Mobil-O-Graph for assessment of PWV and central systolic blood pressure (cSBP). Materials and Methods:
D. Benas, Michalis Kornelakis, H. Triantafyllidi, G. Kostelli, G. Pavlidis, M. Varoudi, D. Vlastos, V. Lambadiari, J. Parissis, I. Ikonomidis   +9 more
semanticscholar   +1 more source

Reproducibility of pulse-wave analysis and pulse-wave velocity determination in chronic kidney disease [PDF]

Nephrology Dialysis Transplantation, 2007
Indices of central arterial stiffness, derived by use of applanation tonometry, have shown to be strong independent predictors of cardiovascular morbidity and mortality in patients with chronic kidney disease (CKD). The objective of this study was to evaluate the intra- and inter-observer and day-to-day reproducibility of pulse-wave analysis (PWA) and ...
Frimodt-Møller, Marie, Nielsen, Arne Høj, Kamper, Anne-Lise, Strandgaard, S.   +3 more
openaire   +3 more sources

Effect of terahertz irradiation on DNA damage repair in living cells

FEBS Open Bio, EarlyView.
We investigated the effect of terahertz (THz) wave irradiation on DNA double‐strand break (DSB) repair in living cells. We found that THz irradiation enhanced DSB repair at specific frequencies, whereas heat treatment inhibited it, indicating that this effect is nonthermal and frequency‐specific.
Yuya Ueno, Shota Yamazaki, Hiromichi Hoshina, Masahiko Harata   +3 more
wiley   +1 more source

Using fluorescence fluctuation spectroscopy to quantify molecular dynamics within cells

FEBS Open Bio, EarlyView.
Microscopy techniques like fluorescence correlation spectroscopy (FCS) and number and brightness analysis (N&B) allow to quantify concentrations, diffusion rates, and oligomerization of fluorescently labeled molecules in the living cell. In this protocol the principles of how to set up these types of experiments are described including calibration ...
Mark A. Hink
wiley   +1 more source