Results 11 to 20 of about 596,019 (261)

Simulated Obstructive Sleep Apnea Increases P-Wave Duration and P-Wave Dispersion. [PDF]

open access: yesPLoS ONE, 2016
BACKGROUND:A high P-wave duration and dispersion (Pd) have been reported to be a prognostic factor for the occurrence of paroxysmal atrial fibrillation (PAF), a condition linked to obstructive sleep apnea (OSA).
Thomas Gaisl   +7 more
doaj   +6 more sources

P-wave dispersion: an update

open access: yesIndian Pacing and Electrophysiology Journal, 2016
P-wave dispersion (PWD, Pd or Pdis) is a noninvasive electrocardiographic (ECG) marker for atrial remodeling and predictor for atrial fibrillation (AF).
Andrés Ricardo Pérez-Riera   +5 more
doaj   +3 more sources

Himalayan P waves [PDF]

open access: yesInternal and Emergency Medicine, 2010
A 22-year-old man presented with a history of breathlessness of around 6 months duration. The breathlessness was particularly prominent on walking. He had noted that his fingers were of a bluish hue over the prior 2 months. He denied any history of chest pain, syncope, cyanotic spells or arthritis during his childhood.
Vishal, Sharma   +2 more
openaire   +2 more sources

Giant P waves [PDF]

open access: yesHeart, 2003
A 15 year old girl was referred to our heart failure and transplant clinic with hypertrophic cardiomyopathy. Physical examination revealed …
T A, Simmers, J H, Kirkels
openaire   +2 more sources

Accurate Hugoniots and sound velocities of bismuth under shock compression in the 38-100 GPa range

open access: yesAIP Advances, 2018
Dynamic compression experiments of bismuth (Bi) in a shock pressure range of 38-100 GPa were conducted using an explosive drive. The time-resolved particle velocity profiles at the Bi/LiF (lithium fluoride) interface and the impact velocities were ...
Feng Xi   +9 more
doaj   +1 more source

Prediction of Concrete Strength with P-, S-, R-Wave Velocities by Support Vector Machine (SVM) and Artificial Neural Network (ANN)

open access: yesApplied Sciences, 2019
Mechanical waves, such as ultrasonic waves, have shown promise for use in non-destructive methods used in the evaluation of concrete properties, such as strength and elasticity.
Jong Yil Park   +2 more
doaj   +1 more source

Magneto-elastic SV-wave at the interface of pre-stressed surface with voids under rotation

open access: yesJournal of the Mechanical Behavior of Materials, 2016
The aim of this paper is to study the behaviour of reflection of SV- wave at a free surface under the effects of magnetic field, initial stress, rotation and voids.
Kakar Rajneesh, Kakar Shikha
doaj   +1 more source

Dynamic responses of an underwater site subjected to plane P- or SV-wave incidence

open access: yesYantu gongcheng xuebao, 2018
The displacement responses of an underwater site due to plane P- or SV-wave incidence are studied. The site consists of a water layer and a saturated soil deposit overlying bedrock.
ZHANG Kui , LI Wei-hua , ZHAO Cheng-gang
doaj   +1 more source

Effects of haemodialysis on maximum P wave duration and P wave dispersion [PDF]

open access: yesNephrology Dialysis Transplantation, 2002
Analysing a 12-lead surface electrocardiogram (ECG), the inter-lead variability of the P wave interval, i.e. P wave dispersion, is defined as the difference between the maximum and the minimum P wave duration. Our aim was to assess the effect of haemodialysis on P wave duration and dispersion in non-diabetic patients with end-stage renal failure on ...
Zoltán, Szabó   +9 more
openaire   +2 more sources

Reflection of P-Wave and Sv-Wave in a Generalized Two Temperature Thermoelastic Half-Space

open access: yesInternational Journal of Applied Mechanics and Engineering, 2014
In this work the theory of two temperature generalized thermoelasticity has been used to investigate the problem of reflection of P-wave and SV-wave in a half space when the surface is i) thermally insulated or ii) isothermal.
S. Santra, A. Lahiri, N.C. Das
doaj   +1 more source

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