Results 71 to 80 of about 432,453 (195)

Association between increased arterial stiffness and clinical outcomes in patients with early sepsis: a prospective observational cohort study

Intensive Care Medicine Experimental, 2019
Background Conduit arteries, especially the aorta, play a major role in ensuring efficient cardiac function and optimal microvascular flow due to their viscoelastic properties.
Sigita Kazune, Andris Grabovskis, Corrado Cescon, Eva Strike, Indulis Vanags   +4 more
doaj   +1 more source

Validity and reproducibility of arterial pulse wave velocity measurement using new device with oscillometric technique: A pilot study

BioMedical Engineering OnLine, 2005
Background Availability of a range of techniques and devices allow measurement of many variables related to the stiffness of large or medium sized arteries. There is good evidence that, pulse wave velocity is a relatively simple measurement and is a good
Patnaik Amar, Yashmaina Sridhar, Reddy Budda, Naidu Madireddy, Rani Pingali   +4 more
doaj   +1 more source

Pulse propagation in a chain of o-rings with and without precompression

, 2010
We implement a binary collision approximation to study pulse propagation in a chain of o-rings. In particular, we arrive at analytic results from which the pulse velocity is obtained by simple quadrature.
Lindenberg, Katja, Pinto, Italo'Ivo Lima Dias, Romero, Aldo H., Rosas, Alexandre   +3 more
core   +1 more source

Signal velocity, causality, and quantum noise in superluminal light pulse propagation

, 2001
We consider pulse propagation in a linear anomalously dispersive medium where the group velocity exceeds the speed of light in vacuum (c) or even becomes negative. A signal velocity is defined operationally based on the optical signal-to-noise ratio, and
A. Dogariu, A. Dogariu, A. Kuzmich, B. E. A. Saleh, B. Segev, C. M. Caves, E. Desurvire, G. Diener, H. A. Haus, J. Oppenheim, L. Brillouin, L. J. Wang, L. J. Wang, L. Mandel, P. W. Milonni, P. W. Milonni, R. Y. Chiao, R. Y. Chiao, R. Y. Chiao, S. Chu, W. K. Wooters, Y. Aharonov, Y. Yamamoto   +22 more
core   +1 more source

Ionization waves of arbitrary velocity driven by a flying focus

, 2017
A chirped laser pulse focused by a chromatic lens exhibits a dynamic, or "flying," focus in which the trajectory of the peak intensity decouples from the group velocity.
Bahk, S. -W., Bromage, J., Follett, R. K., Froula, D. H., Haberberger, D., Palastro, J. P., Shaw, J. L., Turnbull, D.   +7 more
core   +1 more source

Traditional practices and recent advances in Nadi Pariksha: A comprehensive review

Journal of Ayurveda and Integrative Medicine, 2019
The significance of Nadi Pariksha is well understood and effectively used by Ayurveda practioners for assessing Tridoshas and various physiological and psychological states of the patient.
P. Venkata Giri Kumar, Sudheer Deshpande, H.R. Nagendra   +2 more
doaj   +1 more source

Carrier-envelope phase dependence in single-cycle laser pulse propagation with the inclusion of counter-rotating terms

, 2012
We focus on the propagation properties of a single-cycle laser pulse through a two-level medium by numerically solving the full-wave Maxwell-Bloch equations.
Cui N, Kiffner M, Mihai A Macovei, Ni Cui, Niu Y P, Wegener M   +5 more
core   +1 more source

A Comparative Study of Brachial–Ankle Pulse Wave Velocity and Heart–Finger Pulse Wave Velocity in Korean Adults

Sensors, 2020
Arterial stiffness is considered an index of vascular aging. The brachial–ankle pulse wave velocity (baPWV) method is widely used because of its proven effectiveness; and the pulse wave velocity measurement method using both electrocardiogram (ECG) and ...
Jaegeol Cho, Hyun Jae Baek
doaj   +1 more source

Storage of light in atomic vapor

, 2000
We report an experiment in which a light pulse is decelerated and trapped in a vapor of Rb atoms, stored for a controlled period of time, and then released on demand.
A. Fleischhauer, A. Kuzmich, A. Kuzmich, A. Mair, D. Budker, D. F. Phillips, H. Schmidt, J. Hald, J. I. Cirac, L. V. Hau, M. D. Lukin, M. D. Lukin, M. D. Lukin, M. D. Lukin, M. Fleischhauer, M. Hennrich, M. Kash, O. Kocharovskaya, R. L. Walsworth, S. E. Harris, S. E. Harris, S. E. Harris, S. E. Harris, V. A. Sautenkov   +23 more
core   +2 more sources

Measuring Blood Pulse Wave Velocity with Bioimpedance in Different Age Groups

Sensors, 2019
In this project, we have studied the use of electrical impedance cardiography as a possible method for measuring blood pulse wave velocity, and hence be an aid in the assessment of the degree of arteriosclerosis. Using two different four-electrode setups,
Shafa Aria, Yassine Elfarri, Marius Elvegård, Adam Gottfridsson, Halvor S. Grønaas, Sigve Harang, Anders Jansen, Thomas Emil Rolland Madland, Ivar Bruvik Martins, Marius Wilhelm Olstad, Tommy Lee Ryan, Anwar Nazih Shaban, Øyvind Løken Svenningsen, Andre Djupvik Sørensen, Emil Holm Ulvestad, Ole Martin Vister, Morten Bratgjerd Øvergaard, Håvard Kalvøy, Fred Johan Pettersen, Hans Henrik Odland, Vegard Munkeby Joten, Øyvind Grannes Martinsen, Christian Tronstad, Ole Elvebakk, Ørjan Grøttem Martinsen   +24 more
doaj   +1 more source