Results 1 to 10 of about 5,002,199 (254)

Short-timescale heart-rate fluctuation and acoustic stability show structured coupling at register transitions during singing [PDF]

open access: yesFrontiers in Psychology
Heart rate (HR) is widely used to index physiological activation during singing and music performance, yet condition-level mean HR provides limited insight into how physiological regulation unfolds during vocal task execution.
Youhe Li
doaj   +2 more sources

Optimization of Train Operation Planning with Full-Length and Short-Turn Routes of Virtual Coupling Trains

open access: yesApplied Sciences, 2022
Virtual coupling uses wireless communication instead of mechanical coupling to ensure that trains are easily reconnected or disconnected. This technology can shorten the interval time between trains, give full play to the carrying capacity of lines, and ...
Xu Zhou, Fang Lu, Liyu Wang
doaj   +3 more sources

A Case Report of Short‐Coupled Ventricular Fibrillation Unmasked During Post‐Infarction Inflammatory Remodeling [PDF]

open access: yesClinical Case Reports
This case illustrates the rare clinical emergence of the short‐coupled ventricular fibrillation (SC‐VF) phenotype during the subacute remodeling phase following acute myocardial infarction (AMI).
ZiYu Zhao, Ming Ni, Bo Li, Songhua Li
doaj   +2 more sources

Dynamical cross-correlations between RR and QT intervals in long-term electrocardiogram recordings [PDF]

open access: yesScientific Reports
Understanding the dynamic relationship between RR and QT intervals is crucial for interpreting electrocardiograms (ECGs) and managing cardiac conditions.
Jimi Kokkonen   +3 more
doaj   +2 more sources

Accelerated Idioventricular Rhythm and Hypokalemia, Atypical Presentation in the Midst of a Pandemic

open access: yesJournal of Cardiac Arrhythmias, 2021
A 34-year-old female patient was referred to a private center from a rural population due to exertional dyspnea and palpitations for 15 days being previously asymptomatic, a surface electrocardiogram diagnoses sinus rhythm alternating with accelerated ...
Carlos Rodríguez-Artuza   +2 more
doaj   +4 more sources

Short-coupled variant of torsade de pointes: A systematic review of case reports and case series

open access: yesFrontiers in Cardiovascular Medicine, 2022
BackgroundThe short-coupled variant of torsade de pointes (scTdP) is characterized by a particular electrocardiogram (ECG) pattern that shows a short-coupling interval of the initial Tdp beat and that can degenerate into ventricular fibrillation without ...
Guangqiang Wang   +4 more
doaj   +1 more source

Principles of organizing earthquake forecasting based on multiparameter sensor-WEB monitoring data [PDF]

open access: yesE3S Web of Conferences, 2020
The paper describes an approach that allows, basing on the data of multiparameter monitoring of atmospheric and ionospheric parameters and using ground-based and satellite measurements, to select from the data stream a time interval indicating the ...
Pulinets Sergey   +3 more
doaj   +1 more source

Investigation on safe-operating-area degradation and failure modes of SiC MOSFETs under repetitive short-circuit conditions

open access: yesPower Electronic Devices and Components, 2023
The safe operating area is an operating area with high reliability for SiC MOSFET, and its degradation may cause power electronic system failure. The safe-operating-area degradation and the failure modes of 1200 V/66A SiC MOSFET caused by repetitive ...
Ziyang Zhang, Lin Liang, Haoyang Fei
doaj   +1 more source

Analytic study of dark photon and gravitational wave production from axion

open access: yesJournal of High Energy Physics, 2021
Axion-like fields heavier than about 10 −27 eV are expected to oscillate in the radiation dominated epoch when the Hubble parameter drops below their mass.
Borna Salehian   +3 more
doaj   +1 more source

Synchronization Analysis for Stochastic Inertial Memristor-Based Neural Networks with Linear Coupling

open access: yesComplexity, 2020
This paper concerns the synchronization problem for a class of stochastic memristive neural networks with inertial term, linear coupling, and time-varying delay. Based on the interval parametric uncertainty theory, the stochastic inertial memristor-based
Lixia Ye   +3 more
doaj   +1 more source

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