Results 1 to 10 of about 596,019 (261)

Observations of resonant scattering in the thermosphere and upper mesosphere in the winter season of 2021 [PDF]

open access: yesEPJ Web of Conferences, 2021
An analysis of the Kamchatka lidar station data obtained in January-February 2021 is presented. Pronounced light scattering layers at altitudes of 300 km have been detected.
Bychkov Vasily   +2 more
doaj   +1 more source

The Evaluation of P‐Wave Parameters in Patients With Percutaneous Closure of Atrial Septal Defect [PDF]

open access: yesAnnals of Noninvasive Electrocardiology
Background Atrial septal defect (ASD) can lead to volume overload and related changes in P‐wave parameters in surface electrocardiograms of these patients. In this study, we aimed to evaluate the effect of volume overload on P‐wave parameters in patients
Ramazan Astan   +3 more
doaj   +2 more sources

Stress amplification of the landslide slip zone during vertical P-wave incidence based on ray theory

open access: yes地质科技通报, 2022
The largest landslide triggered by the Wenchuan earthquake was the Daguangbao landslide, which formed in the preinterlayer structural dislocation zone (weak layer) in the slope.
Jin Lei   +5 more
doaj   +1 more source

The effect of recanalization of a chronic total coronary occlusion on P-wave dispersion [PDF]

open access: yesJournal of Cardiovascular and Thoracic Research, 2021
Introduction: P-wave dispersion (PWD) obtained from the standard 12-lead electrocardiography (ECG) is considered to reflect the homogeneity of the atrial electrical activity.
Aydın Rodi Tosu   +7 more
doaj   +1 more source

Ocean swell within the kinetic equation for water waves [PDF]

open access: yesNonlinear Processes in Geophysics, 2017
Results of extensive simulations of swell evolution within the duration-limited setup for the kinetic Hasselmann equation for long durations of up to 2  ×  106 s are presented.
S. I. Badulin   +6 more
doaj   +1 more source

Broadband Solar Metamaterial Absorbers Empowered by Transformer‐Based Deep Learning

open access: yesAdvanced Science, 2023
The research of metamaterial shows great potential in the field of solar energy harvesting. In the past decade, the design of broadband solar metamaterial absorber (SMA) has attracted a surge of interest.
Wei Chen   +6 more
doaj   +1 more source

A Potential Method for Body and Surface Wave Propagation in Transversely Isotropic Half- and Full-Spaces [PDF]

open access: yesCivil Engineering Infrastructures Journal, 2016
The problem of propagation of plane wave including body and surface waves propagating in a transversely isotropic half-space with a depth-wise axis of material symmetry is investigated in details.
Mehdi Raoofian Naeeni   +1 more
doaj   +1 more source

P-Wave Detection Using a Fully Convolutional Neural Network in Electrocardiogram Images

open access: yesApplied Sciences, 2020
Electrocardiogram (ECG) signal analysis is a critical task in diagnosing the presence of any cardiac disorder. There are limited studies on detecting P-waves in various atrial arrhythmias, such as atrial fibrillation (AFIB), atrial flutter, junctional ...
Rana N. Costandy   +4 more
doaj   +1 more source

Genetic Mechanism of Geothermal Anomaly in the Gaoyang Uplift of the Jizhong Depression

open access: yesFrontiers in Earth Science, 2022
The Gaoyang uplift is rich in geothermal resources, but there are few studies on the regional geothermal genetic mechanism. A large number of geothermal wells fail in position calculation because of a shortage of basis.
Qingzhuang Miao   +9 more
doaj   +1 more source

First-principles calculations of mechanical and electronic properties of silicene under strain

open access: yesAIP Advances, 2012
We perform first-principles calculations of mechanical and electronic properties of silicene under strains. The in-plane stiffness of silicene is much smaller than that of graphene.
Rui Qin   +3 more
doaj   +1 more source

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