Results 91 to 100 of about 2,011,937 (232)
Applied Sciences, 2023 We present a low-intensity noise single-frequency Yb-doped all-fiber amplifier oriented to space-borne gravitational wave detection. Relative intensity noise (RIN) below −70 dBc/Hz @ 1 mHz~1 Hz was achieved by virtue of feedback-loop-based intensity ...
Zaiyuan Wang +5 more
doaj +1 more source
Quantum theory of resonantly enhanced four-wave mixing: mean-field and exact numerical solutions
, 2002 We present a full quantum analysis of resonant forward four-wave mixing based on electromagnetically induced transparency (EIT). In particular, we study the regime of efficient nonlinear conversion with low-intensity fields that has been predicted from a
A.K. Popov +34 more
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Spiral and Taylor vortex fronts and pulses in axial through-flow [PDF]
, 2003 The influence of an axial through-flow on the spatiotemporal growth behavior of different vortex structures in the Taylor-Couette system with radius ratio eta=0.5 is determined.
Hoffmann, Ch., Lücke, M., Pinter, A.
core +1 more source
Wave intensity analysis: a novel non-invasive method for determining arterial wave transmission [PDF]
Computers in Cardiology, 2003 Wave intensity analysis is a novel technique for assessing wavelet transmission in the cardiovascular system. Using this tool, we have developed non-invasive techniques to study wave transmission in both central & peripheral arteries in man. The aim of this study was to determine the reproducibility of various haemodynamic measures in the carotid ...
A. Zambanini +5 more
openaire +1 more source
Artery Research, 2018 Background: Wave intensity analysis (WIA) in the aorta offers important clinical and mechanistic insights but is difficult non-invasively. We performed WIA by combining high temporal resolution cardiovascular magnetic resonance (CMR) flow velocity and ...
Anish Bhuva +13 more
doaj +1 more source
Search for Rapid Changes in the Visible-Light Corona during the 21 June 2001 Total Solar Eclipse [PDF]
, 2010 Some 8000 images obtained with the SECIS fast-frame CCD camera instrument located at Lusaka, Zambia, during the total eclipse of 21 June 2001 have been analyzed to search for short-period oscillations in intensity that could be a signature of solar ...
Buczylko, A. +4 more
core +1 more source
PLoS ONE, 2013 ObjectivesAugmentation index (AIx) is widely used as a measure of wave reflection. We compared the relationship between AIx and age, height and sex with 'gold standard' measures of wave reflection derived from measurements of pressure and flow to ...
Alun D Hughes +6 more
doaj +1 more source
Cross density of states and mode connectivity: Probing wave localization in complex media
, 2019 We introduce the mode connectivity as a measure of the number of eigenmodes of a wave equation connecting two points at a given frequency. Based on numerical simulations of scattering of electromagnetic waves in disordered media, we show that the ...
Canaguier-Durand, Antoine +2 more
core +2 more sources
Using wave intensity analysis to determine local reflection coefficient in flexible tubes.
Journal of Biomechanics, 2016 It has been shown that reflected waves affect the shape and magnitude of the arterial pressure waveform, and that reflected waves have physiological and clinical prognostic values.
Ye Li, K. Parker, A. Khir
semanticscholar +1 more source
Simultaneous rocket and MST radar observation of an internal gravity wave breaking in the mesosphere [PDF]
, 1986 In June, 1983, the Structure and Atmospheric Turbulence Environment (STATE) rocket and Poker Flat Mesophere-Stratosphere-Troposphere radar campaign was conducted to measure the interaction between turbulence, electron density and electron density ...
Balsley, B. B. +3 more
core +1 more source