Results 31 to 40 of about 37,855 (164)

Flutter Boundary Prediction of a Two Dimensional Airfoil in Transonic Flight Regime with the Preset Angles of Attack [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
Angle of attack has impact on transonic flow filed and aerodynamic force, but most of current researches on flutter use zero angle hypothesis, which has no consideration about angle of attack.

doaj   +1 more source

Isthmus Dependent Atrial Flutter Cycle Length Correlates with Right Atrial Cross-Sectional Area

open access: yesIndian Pacing and Electrophysiology Journal, 2009
Background: Right atrial flutter cycle length can prolong in the presence of antiarrhythmic drug therapy. We hypothesized that the cycle length of right atrial isthmus dependent flutter would correlate with right atrial cross-sectional area measurements.
Kousik Krishnan   +6 more
doaj  

Study on coupled mode flutter parameters of large wind turbine blades

open access: yesScientific Reports
As the size of wind turbine blades increases, the flexibility of the blades increases. In actual operation, airflow flow can cause aerodynamic elastic instability of the blade structure.
Yong Zhuang, Guangming Yuan
doaj   +1 more source

Frequency- and time-domain methods related to flutter instability problem [PDF]

open access: yesGrađevinski Materijali i Konstrukcije, 2014
Bridge flutter phenomenon presents an important criterion of instability, which should be considered in the bridge design phase. This paper presents different bridge flutter methods which can be used to solve the flutter problem.
Šarkić Anina   +2 more
doaj   +1 more source

AURICULAR FLUTTER [PDF]

open access: yesArchives of Internal Medicine, 1918
n ...
openaire   +2 more sources

The high efficiency and accuracy prediction analysis of the flutter envelope

open access: yesHangkong gongcheng jinzhan, 2023
It is significant to efficiently and accurately determine the flutter boundary of various aircraft configura-tions in the aircraft design. In this paper, the linear unsteady aerodynamic method and nonlinear unsteady aerody-namic method are adopted for ...
CHENG Fang, LI Junjie
doaj   +1 more source

Virtualizing clinical cases of atrial flutter in a fast marching simulation including conduction velocity and ablation scars

open access: yesCurrent Directions in Biomedical Engineering, 2015
Diagnosis of atrial flutter caused by ablation of atrial fibrillation is complex due to ablation scars. This paper presents an approach to replicate the clinically measured flutter circuit in a dynamic computer model.
Trächtler J.   +6 more
doaj   +1 more source

Electrophysiological Mechanisms of Atrial Flutter

open access: yesIndian Pacing and Electrophysiology Journal, 2006
Atrial flutter (AFL) is a common arrhythmia in clinical practice. Several experimental models such as tricuspid regurgitation model, tricuspid ring model, sterile pericarditis model and atrial crush injury model have provided important information about
Ching- Tai Tai, Shin-Ann Chen
doaj  

A Study on Post-Flutter Characteristics of a Large-Span Double-Deck Steel Truss Main Girder Suspension Bridge

open access: yesBuildings
To investigate the nonlinear flutter characteristics of long-span suspension bridges under different deck ancillary structures and configurations, including those with and without a central wind-permeable zone, as well as to analyze the hysteresis ...
Chunguang Li   +5 more
doaj   +1 more source

Erroneous computer-based interpretations of atrial fibrillation and atrial flutter in a Swedish primary health care setting

open access: yesScandinavian Journal of Primary Health Care, 2019
Objective: To describe the incidence of incorrect computerized ECG interpretations of atrial fibrillation or atrial flutter in a Swedish primary care population, the rate of correction of computer misinterpretations, and the consequences of misdiagnosis.
Thomas Lindow   +4 more
doaj   +1 more source

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