Results 11 to 20 of about 394,311 (223)

Effect on the critical fluid velocity of a flutter by the spanwise dynamic characteristics of a cantilevered rectangular plate

Nihon Kikai Gakkai ronbunshu, 2020
The dynamic stability of rectangular flexible plate often becomes a problem. As the flexible plate, the papers in a high-speed printing machine, the thin plastic, the thin metal, the fluttering flag and the oscillating doom roof are enumerated.
Katsuhisa FUJITA, Satoshi KITANO, Ryohei KOZU, Tomoyoshi OMURA   +3 more
doaj   +1 more source

Safety and effectiveness of a novel dielectric mapping system: one-year, two chinese centers experiences

BMC Cardiovascular Disorders, 2022
Background The KODEX-EPD system is a novel, dielectric three-dimensional mapping system. We aim to illustrate the feasibility, safety, and outcomes of ablation using the KODEX-EPD system.
Lei Ding, Xiao Huang, Cong Dai, Hongda Zhang, Sixian Weng, Fengyuan Yu, Yingjie Qi, Shu Zhang, Ruizheng Shi, Min Tang   +9 more
doaj   +1 more source

The Impact of Ischemia Assessed by Magnetic Resonance on Functional, Arrhythmic, and Imaging Features of Hypertrophic Cardiomyopathy

Frontiers in Cardiovascular Medicine, 2021
Aims: The aim of the study is to investigate the association between the degree of ischemia due to coronary microvascular dysfunction (CMD) and the left ventricular (LV) tissue characteristics, systolic performance, and clinical manifestations in ...
Sílvia Aguiar Rosa, Sílvia Aguiar Rosa, Sílvia Aguiar Rosa, Boban Thomas, António Fiarresga, Ana Luísa Papoila, Ana Luísa Papoila, Marta Alves, Marta Alves, Ricardo Pereira, Gonçalo Branco, Inês Cruz, Pedro Rio, Luis Baquero, Rui Cruz Ferreira, Miguel Mota Carmo, Luís Rocha Lopes, Luís Rocha Lopes, Luís Rocha Lopes   +18 more
doaj   +1 more source

Effect of fluoroscopy frame rate on radiation exposure and in‐hospital outcomes in three‐dimensional electroanatomic mapping guided procedures

Journal of Arrhythmia, 2021
Background Fluoroscopic imaging involves exposure of the patients and the laboratory staff to ionizing radiation. One of the strategies that reduce such exposure in an electrophysiology laboratory is using a three‐dimensional electroanatomic mapping (3D ...
Muzaffar Ali, Deepak Padmanabhan, Khalil Kanjwal, Milan Kumar Ghadei, Anju Kottayan, Bharatraj Banavalikar, Jayaprakash Shenthar   +6 more
doaj   +1 more source

Instability mechanism of flutter generated on a rectangular sheet

Nihon Kikai Gakkai ronbunshu, 2018
An instability mechanism of flutter generated on a rectangular flexible sheet in an axial fluid flow is investigated through the energy-transfer quantifications.
Keiichi HIROAKI, Masahiro WATANABE
doaj   +1 more source

SparkleMap-based left atrial flutter mapping and ablation

Revista Portuguesa de Cardiologia, 2023
Ablation of atypical left atrial flutters (LAF) is very challenging due to the complexity of the underlying atrial substrate and diverse arrhythmia mechanisms. The interpretation of the arrhythmia mechanism is usually difficult, even using advanced three-
Nuno Cortez-Dias, Gustavo Lima da Silva, Afonso Nunes Ferreira, Joana Quaresma, Sílvia Sobral, Luís Carpinteiro, João de Sousa   +6 more
doaj   +1 more source

Flutter of Fan Blades in the Aircraft Engine in the Three-Dimensional Subsonic Gas Flow

NTU KhPI Bulletin Power and heat engineering processes and equipment, 2021
Aeroelasticity problems arise in the different fields of technology. The accident-free operation of the airborne machines is one of the most important factors that should be taken into account during their designing and upgrading.
V. Gnesin, L. Kolodyazhnaya, Y. Bykov, I. Kravchenko, Oleksii Petrov, V. Donchenko   +5 more
semanticscholar   +1 more source

Sensitivity Analysis of Geometrical Parameters on the Aerodynamic Performance of Closed-Box Girder Bridges

Sensors, 2018
In this study, the influence of two critical geometrical parameters (i.e., angles of wind fairing, α; and lower inclined web, β) in the aerodynamic performance of closed-box girder bridges was systematically investigated through conducting a ...
Yongxin Yang, Rui Zhou, Yaojun Ge, Yanliang Du, Lihai Zhang   +4 more
doaj   +1 more source

Research on flutter method for three dimensional wing rudder

, 2021
Aiming at providing high efficiency and accurate flutter analysis for high speed aircraft in transonic flow, flutter analysis in frequency domain based on three-dimensional wing rudder is employed for AGARD 445.6 wing.
X. Zhou, L. Liang, L. Yang, J. Xiao, Q. Zhang   +4 more
semanticscholar   +1 more source

Aero-servo-elastic analysis of a hypersonic aircraft

Journal of Low Frequency Noise, Vibration and Active Control, 2018
Aero-servo-elastic analysis of a complex hypersonic aircraft is presented in this paper. A structure geometry was designed and built based on the X-43A vehicle.
Wei Qian, Yuguang Bai, Xiangyan Chen, Taojun Lu   +3 more
doaj   +1 more source