Results 31 to 40 of about 489 (150)

Advanced Design of a Full-Scale Active Morphing Droop Nose

International Journal of Aerospace Engineering, 2020
This paper describes the design of a morphing droop nose conceived to increase the performance in high-lift conditions of a twin-prop regional aircraft, while ensuring the natural flow laminarity of the wing.
Alessandro De Gaspari, Vittorio Cavalieri, Sergio Ricci   +2 more
doaj   +1 more source

Laminar plasma dynamos

Physics of Plasmas, 2002
A new kind of dynamo utilizing flowing laboratory plasmas has been identified. The conversion of plasma kinetic energy to magnetic energy is verified numerically by kinematic dynamo simulations for magnetic Reynolds numbers above 210. As opposed to intrinsically-turbulent liquid-sodium dynamos, the proposed plasma dynamo corresponds to laminar flow ...
Wang, Zhehui, Pariev, Vladimir I., Barnes, Cris W., Barnes, Daniel C.   +3 more
openaire   +2 more sources

Numerical investigation and recurrence plot analysis of pulsating magnetohydrodynamic mixed convection over a backward facing step

Nonlinear Analysis, 2015
In the current study, numerical investigation of pulsating magnetohydrodynamic mixed convection over a backward facing step is carried out for the range of parameters; Reynolds number (25 ⩽ Re ⩽ 100), Hartmann number (0 ⩽ Ha ⩽ 60), Strouhal number (0.1 ⩽ 
Fatih Selimefendigil
doaj   +1 more source

The Effect of Auditory Stimulation on the Nonlinear Dynamics of Heart Rate: The Impact of Emotional Valence and Arousal

Noise and Health, 2023
Background: Although it is known that sound exposure evokes changes in autonomic activity, the effects of noise and music on the nonlinear behavior of heart rate fluctuations remain poorly understood and controversial.
Dmitri Dimitriev, Olga Indeykina, Aleksey Dimitriev   +2 more
doaj   +1 more source

A Novel Approach to Analyzing Wrestling Skills: Multidimensional Recurrence Quantification Analysis of Muscle Activity [PDF]

Journal of Rehabilitation Sciences and Research
Background: As athletes develop, their motor patterns evolve from variable to adaptive neuromuscular control strategies, enabling precise execution of complex movements.
Kazem Esfandiarian-Nasab, Mansour Eslami, Fateme Salari-Esker, Rohollah Yousefpour   +3 more
doaj   +1 more source

Dual-Task Gait Stability after Concussion and Subsequent Injury: An Exploratory Investigation

Sensors, 2020
Persistent gait alterations can occur after concussion and may underlie future musculoskeletal injury risk. We compared dual-task gait stability measures among adolescents who did/did not sustain a subsequent injury post-concussion, and uninjured ...
David R. Howell, Scott Bonnette, Jed A. Diekfuss, Dustin R. Grooms, Gregory D. Myer, Julie C. Wilson, William P. Meehan   +6 more
doaj   +1 more source

Focal impulse and rotor modulation of atrial rotors during atrial fibrillation leads to organization of left atrial activation as reflected by waveform morphology recurrence quantification analysis and organizational index

Journal of Arrhythmia, 2020
Background Focal impulse and rotor modulation (FIRM) can cause slowing, organization, and occasionally termination of atrial fibrillation (AF), although results have been mixed.
Peter R. Liu, Daniel J. Friedman, Adam S. Barnett, Kevin P. Jackson, James P. Daubert, Jonathan P. Piccini   +5 more
doaj   +1 more source

Recurrence quantification analysis of two solar cycle indices

Journal of Space Weather and Space Climate, 2017
Solar activity affects the whole heliosphere and near-Earth space environment. It has been reported in the literature that the mechanism responsible for the solar activity modulation behaves like a low-dimensional chaotic system.
Stangalini Marco, Ermolli Ilaria, Consolini Giuseppe, Giorgi Fabrizio   +3 more
doaj   +1 more source

Effects of Laminar Boundary Layer Control by Suction of a Stationary and Compressible Flow Around a Two-Dimensional Profile

Revue des Énergies Renouvelables
Reducing aircraft energy consumption is a major challenge for aerodynamics specialists. This consumption is closely linked to the drag force. Drag has always hampered the smooth movement of the aircraft.
Azzedine Nahoui, Zakaria Haddad, Khalil Zerari   +2 more
doaj   +1 more source

Influence of Water and Mineral Oil on the Leaks in Satellite Motor Commutation Unit Clearances

Polish Maritime Research, 2017
The article describes the flow rates of mineral oil and water flowing, as working media, through the commutation unit of a hydraulic satellite motor. It is demonstrated that geometrical dimensions of commutation unit clearances change as a function of ...
Śliwiński Paweł
doaj   +1 more source