Results 171 to 180 of about 7,271 (213)

Pulse Wave Velocity in Kawasaki Disease

Angiology, 2016
Kawasaki disease (KD) is an acute childhood febrile disease of unknown etiology. It exhibits not only coronary artery aneurysms in some cases but also systemic vasculitis. Whether KD is associated with accelerated atherosclerosis remains debatable. The measurement of pulse wave velocity (PWV) is useful as a simple, noninvasive measurement of arterial ...
Yoshitaka, Iwazu, Takaomi, Minami, Kazuhiko, Kotani   +2 more
openaire   +2 more sources

Pulse centroid velocity of the Poynting vector

Journal of the Optical Society of America A, 2004
The evolution of the pulse centroid velocity of the Poynting vector for both ultrawideband rectangular and ultrashort Gaussian envelope pulses is presented as a function of the propagation distance in a dispersive, absorptive dielectric material. The index of refraction of the material is described by the Lorentz-Lorenz formula in which a single ...
Natalie A, Cartwright, Kurt E, Oughstun
openaire   +2 more sources

On the velocity of pulsed beams

Proceedings of CAOL'2003. 1st International Conference on Advanced Optoelectronics and Lasers. Jontly with 1st Workshop on Precision Oscillations in Electronics and Optics (IEEE Cat. No.03EX715), 2004
The article aims to find appropriate speed parameter to characterize short pulse beam propagation and analysis of possible mistakes in simulations and experiments. From the discussions, it is shown that for free space superluminal propagation is by the most part results of different mistakes.
openaire   +1 more source

Investigation of pulse wave velocity in arteries

2012 35th International Conference on Telecommunications and Signal Processing (TSP), 2012
The article deals with the investigation of pulse wave propagation in arteries. A part of work involves also design and realization of devices serving for scanning of pulse wave by reflective photoplethysmography. Microcontroller with integrated A/D converter is used for conversion from analog to digital signal.
Stefan Borik, Ivo Cap
openaire   +1 more source

[Pulse wave velocity].

Rinsho byori. The Japanese journal of clinical pathology, 2004
Pulse wave velocity (PWV) reflects arterial stiffness. PWV correlates with other markers reflecting the severity of atherosclerosis such as the findings of ultrasound examination of carotid artery. In addition, several studies demonstrated that increased PWV is a predictor of future cardiovascular events in patients with either hypertension or diabetes
Hirofumi, Tomiyama, Akira, Yamashina
openaire   +1 more source

Pulse wave analysis and pulse wave velocity

Journal of Hypertension, 2003
The study of the pulse using the technique of applanation tonometry is undergoing a resurgence with the development of new computerized equipment. We aim here to present a critical review of the uses, potential uses, strengths and weaknesses of the technique of applanation tonometry for the assessment of augmentation index and pulse wave velocity.
Davies, Justine Ina, Struthers, Allan D.
openaire   +3 more sources

Pulse Wave Velocity and Pulse Pressure in Patients With Arterial Hypertension

Kardiologiia, 2014
The article is devoted to assessment of pulse pressure (PP) in female postmenopausal patients and patients with arterial hypertension (AH) older than 55 years. It is shown that in postmenopausal women even aged 55 years or less PP is one of most important parameters associated with target organ damage.
O A, Kisliak, A V, Starodubova
openaire   +2 more sources

Carotid–femoral pulse wave velocity in the elderly

Journal of Hypertension, 2014
Predictive value of arterial stiffness in cardiovascular disease has been recognized for many decades. Carotid-femoral pulse wave velocity (cfPWV), as a noninvasive measurement, has been recommended as a gold standard of arterial stiffness, and we believe that this surrogate of arterial stiffness has been refined to the point that its utility in ...
Zhang Y., Agnoletti D., Xu Y., Wang J. -G., Blacher J., Safar M. E.   +5 more
openaire   +2 more sources

Pulse Modulation Effect on Velocity Fringes

Applied Optics, 1975
The degradation of a hologram caused by object motion can be utilized to measure the rate of change of the length of an object beam. A rectangular shaped laser pulse is ordinarily used to illuminate the object in such an investigation. The velocity fringes obtained are considered in the calculation.
openaire   +2 more sources

Characterization Of A Cemented Sand With The Pulse–Velocity Method

17th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2004
The effect of variation in cement content, initial water content, void ratio, and curing time on wave velocity (low-strain property) and unconfined compressive strength (large-strain property) of a cemented sand is examined in this paper. The measured pulse velocity is compared with predictions made using empirical and analytical models, which are ...
Anwar Majid, Zahid H. Khan, Giovanni Cascante, Jean Hutchinson, Parsa Pezeshkpour   +4 more
openaire   +1 more source