Results 51 to 60 of about 1,340,818 (215)
Second harmonic generation and pulse shaping in positively and negatively spatially dispersive nanowaveguides: comparative analysis [PDF]
Optical and Quantum Electronics, 48(2), 1-10, (2016), 2015 Comparative analysis of second harmonic generation in ordinary and backward-wave settings is presented. Extraordinary properties of frequency doubling nonlinear optical reflectivity and pulse shaping through phase matching of ordinary and backward electromagnetic waves in the nanowaveguides with mixed negative/positive spatial dispersion is ...
arxiv +1 more source
Pulse Wave Analysis in Children with Glomerulopathies [PDF]
Journal of Nephrology & Therapeutics, 2013 Sympathetic activation, hypertension, hyperlipidemia, and immunosuppressive treatment are risk factors for vascular damage in children with glomerulopathies. Aim: To perform pulse wave analysis in children with glomerulopathies. Material and Methods: We studied 33 children (22â, 11â) aged 13.3 ± 3.9 years with glomerulopathies: Henoch-Schonlein ...
Zofia Wawer +2 more
openaire +2 more sources
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 +2 more
doaj +1 more source
IEEE Access, 2019 This study proposes the prototype of a wrist pulse acquisition device with three-dimensional pulse image (3DPI) obtained at the radial artery. The proposed prototype is designed with mechanical and electronic circuit hardware as well as the control and ...
Bo Peng +5 more
semanticscholar +1 more source
A non-invasive blood viscosity detecting method based on pulse wave [PDF]
MATEC Web of Conferences, 2020 A non-invasive blood viscosity detection method based on pulse wave is proposed. The method establishes a relationship equation between blood viscosity and peripheral resistance, arterial compliance, and pulse wave waveform characteristics by extracting ...
Cui Fei, Chen Xiaohui, Peng Jie
doaj +1 more source
A Database For Developing Pulse Wave Analysis Algorithms [PDF]
, 2018 Introduction The shape of the arterial pulse wave (PW) is a rich source of information on cardiovascular (CV) health, since it is influenced by both the heart and the vasculature. Consequently, many algorithms have been proposed to estimate clinical parameters from PWs.
Charlton, Peter H +4 more
openaire +4 more sources
Effects of vorticity on the travelling waves of some shallow water two-component systems [PDF]
Discrete & Continuous Dynamical Systems - A (2019), Vol. 39, Issue
9, pp. 5521-5541, 2019 In the present study we consider three two-component (integrable and non-integrable) systems which describe the propagation of shallow water waves on a constant shear current. Namely, we consider the two-component Camassa-Holm equations, the Zakharov-Ito system and the Kaup--Boussinesq equations all including constant vorticity effects. We analyze both
arxiv +1 more source
BMC Pregnancy and Childbirth, 2018 BackgroundOxytocin is an uterotonic drug with profound cardiovascular effects, which in compromised patients could lead to serious events. The objective was to investigate whether oxytocin affects cardiac function and vascular tone in large and small ...
Sofus Rabow +3 more
semanticscholar +1 more source
Journal of Clinical Medicine, 2020 Increased arterial stiffness has been associated with an increased risk of developing cardiovascular diseases and all-cause mortality. Pulse wave velocity (PWV) is an innovative and affordable measurement of arterial stiffness which may be an accessible ...
Irene Sequí-Domínguez +5 more
semanticscholar +1 more source
Analysis of Kapitza-Dirac diffraction patterns beyond the Raman-Nath regime [PDF]
Optics Express 17, 19173-19180 (2009), 2009 We study Kapitza-Dirac diffraction of a Bose-Einstein condensate from a standing light wave for a square pulse with variable pulse length but constant pulse area. We find that for sufficiently weak pulses, the usual analytical short-pulse prediction for the Raman-Nath regime continues to hold for longer times, albeit with a reduction of the apparent ...
arxiv +1 more source