Results 101 to 110 of about 2,011,937 (232)

Synthetic observations of wave propagation in a sunspot umbra

, 2014
Spectropolarimetric temporal series from Fe I $\lambda$ 6301.5 \AA\ and Ca II infrared triplet lines are obtained by applying the Stokes synthesis code NICOLE to a numerical simulation of wave propagation in a sunspot umbra from MANCHA code. The analysis
Felipe, T., Khomenko, E., Socas-Navarro, H.   +2 more
core   +1 more source

Effect of Acute Resistance Exercise on Carotid Artery Stiffness and Cerebral Blood Flow Pulsatility

Frontiers in Physiology, 2014
Arterial stiffness is associated with cerebral flow pulsatility. Arterial stiffness increases following acute resistance exercise (RE). Whether this acute RE-induced vascular stiffening affects cerebral pulsatility remains unknown.
Wesley K Lefferts, Jacqueline A Augustine, Kevin S Heffernan   +2 more
doaj   +1 more source

Electrosensory Frequency and Intensity Discrimination in the Wave-Type Electric Fish Eigenmannia [PDF]

, 1991
Eigenmannia's frequency and intensity discrimination thresholds were determined for a range of seven frequencies (50-1700Hz), centered on a fish's individual discharge frequency, using a conditioned go/no-go paradigm.
Kaunzinger, Ivo, Kramer, Bernd
core  

Enhancement of bichromatic high-harmonic generation with a high-frequency field

, 2001
Using a high-frequency field superposed to a linearly polarized bichromatic laser field composed by a wave with frequency $\omega $ and a wave with frequency $2\omega $, we show it is possible to enhance the intensity of a group of high harmonics in ...
A. de Bohan, A. de Bohan, A. Lohr, B. Piraux, B. Wang, C. Figueira de Morisson Faria, C. Figueira de Morisson Faria, C. Figueira de Morisson Faria, C.F. de Morisson Faria, C.F. de Morisson Faria, C.F. de Morisson Faria, C.F. de Morisson Faria, D.B. Milošević, D.B. Milošević, D.B. Milošević, D.B. Milošević, D.B. Milošević, D.B. Milošević, D.B. Milošević, D.B. Milošević, D.B. Milošević, G.B. Lubkin, H. Eichmann, H. Eichmann, J.L. Krause, K. Burnett, K. C. Kulander, M. Ivanov, M. L. Du, M. Lenzner, M. Lewenstein, M. Protopapas, M.B. Gaarde, M.D. Perry, M.Q. Bao, M.Yu. Kuchiev, P. Antoine, P.B. Corkum, S. Watanabe, U. Andiel, W. Becker, W. Becker, Yu.B. Kudasov   +42 more
core   +1 more source

Mode Coupling and Cavity-Quantum-Dot Interactions in a Fiber-Coupled Microdisk Cavity [PDF]

, 2006
A quantum master equation model for the interaction between a two-level system and whispering-gallery modes (WGMs) of a microdisk cavity is presented, with specific attention paid to current experiments involving a semiconductor quantum dot (QD) embedded
Painter, Oskar, Srinivasan, Kartik
core   +2 more sources

Accurate measurement of the time delay in the response of the LIGO gravitational wave detectors [PDF]

, 2009
We present a method to precisely calibrate the time delay in a long baseline gravitational-wave interferometer. An accurate time stamp is crucial for data analysis of gravitational wave detectors, especially when performing coincidence and correlation ...
Aso, Yoichi, Goetz, Evan, Kalmus, Peter, Matone, Luca, Myers, Joshua, Márka, Szabolcs, O’Reilly, Brian, Savage, Rick, Schwinberg, Paul, Siemens, Xavier, Sigg, Daniel, Smith, Nicolas   +11 more
core  

The Spectroscopic Signature of Quasi-periodic Upflows in Active Region Timeseries

, 2010
Quasi-periodic propagating disturbances are frequently observed in coronal intensity image sequences. These disturbances have historically been interpreted as being the signature of slow-mode magnetoacoustic waves propagating into the corona.
De Pontieu, Bart, McIntosh, Scott W., Tian, Hui   +2 more
core   +1 more source

2.5 NON-INVASIVE WAVE INTENSITY ANALYSIS IN THE AORTA AND INTERNAL CAROTID USING PHASE-CONTRAST MR ANGIOGRAPHY: THE EFFECT OF HYPERTENSION

Artery Research, 2017
Introduction: Hypertension is associated with stiffening of blood vessels, reduced arterial lumen and reduced cerebral blood flow; however, it is not known how lower cerebral blood flow relates to arterial structure or impacts on wave dynamics.
Sandra Neumann, Mark Hamilton, Julian Paton, Angus Nightingale, Jonathan Brooks, Emma Hart, Giovanni Biglino   +6 more
doaj   +1 more source

Development and validation of a new adenosine-independent index of stenosis severity from coronary wave-intensity analysis: results of the ADVISE (ADenosine Vasodilator Independent Stenosis Evaluation) study.

Journal of the American College of Cardiology, 2012
OBJECTIVES The purpose of this study was to develop an adenosine-independent, pressure-derived index of coronary stenosis severity. BACKGROUND Assessment of stenosis severity with fractional flow reserve (FFR) requires that coronary resistance is ...
S. Sen, J. Escaned, I. Malik, G. Mikhail, R. Foale, R. Mila, J. Tarkin, R. Petraco, C. Broyd, R. Jabbour, A. Sethi, C. Baker, M. Bellamy, M. Al-Bustami, D. Hackett, Masood A. Khan, D. Lefroy, K. Parker, A. Hughes, D. Francis, C. Di Mario, J. Mayet, J. Davies   +22 more
semanticscholar   +1 more source

Assessment of arterial pressure wave reflection: Methodological considerations

Artery Research, 2008
Cardiovascular risk assessment more and more makes use of the diagnostic information hidden in the arterial waves propagating in the cardiovascular system.
Abigail Swillens, Patrick Segers
doaj   +1 more source