Results 121 to 130 of about 152,300 (313)
Soft and Adhesive Cardiac Patch for Electrophysiological and Contraction Measurement
Advanced Science, EarlyView.This study developed an epicardial electronic patch with a modulus similar to that of the heart (approximately 65kPa), which can collect stable electrocardiogram signals and myocardial contractility on the surface of a dynamically beating heart. This is attributed to the hydrogen bond interaction formed between the amino and catechol groups in the ...
Wuliang Chen +10 more
wiley +1 more source
Aerodynamic Optimization Design of an Orthogonal Octo-Rotor UAV in a Hovering State
DronesThis paper presents a novel orthogonal octo-rotor Unmanned Aerial Vehicle (UAV) and addresses the aerodynamics of the UAV with varied rotor spacing by both numerical simulations and experiments.
Yao Lei +5 more
doaj +1 more source
Vibratory Loads Data from a Wind-Tunnel Test of Structurally Tailored Model Helicopter Rotors [PDF]
An experimental study was conducted in the Langley Transonic Dynamics Tunnel to investigate the use of a Bell Helicopter Textron (BHT) rotor structural tailoring concept, known as rotor nodalization, in conjunction with advanced blade aerodynamics as ...
Hamouda, M-Nabil H. +5 more
core +1 more source
Aeroelastic considerations for torsionally soft rotors [PDF]
, 1985 A research study was initiated to systematically determine the impact of selected blade tip geometric parameters on conformable rotor performance and loads characteristics.
Mantay, W. R., Yeager, W. T., Jr.
core +2 more sources
Accelerator modes of square well system
, 2005 We study accelerator modes of a particle, confined in an one-dimensional infinite square well potential, subjected to a time-periodic pulsed field. Dynamics of such a particle can be described by one generalization of the kicked rotor. In comparison with
Benkadda +20 more
core +1 more source
Secreted Nonstructural Protein 3 is a Pathogenic Determinant of Orbivirus
Advanced Science, EarlyView.This study uncovers a conserved PIP2‐dependent secretory pathway of orbivirus NS3 that induces vascular leakage. Pharmacological disruption of PIP2‐NS3 interaction significantly reduces viral pathogenicity and provides protective efficacy in murine models, establishing PIP2‐mediated NS3 secretion as both a key virulence determinant and a promising ...
Junyong Guan +11 more
wiley +1 more source
Study on Dynamics Characteristic of High Speed Herringbone Gear Transmission System
Jixie chuandong, 2019 Based on the finite element numerical analysis method， the dynamics equation of herringbone gear transmission system is given and the model of rotor-bearing-gear dynamics system is established.
Yongchao Yuan +4 more
doaj
Advanced Science, EarlyView.A rotational energy harvesting device that successfully reconciles high power density with mechanical durability through a hybrid sliding‐and‐bouncing kinematic mechanism is reported. The success reported in our paper includes addressing a dilemma where enhanced electrical output comes at the cost of increased friction and wear, limiting the practical ...
Yihong Lin +12 more
wiley +1 more source
Dynamics of Multistage Gear Transmission with Effects of Gearbox Vibrations [PDF]
A comprehensive approach is presented in analyzing the dynamic behavior of multistage gear transmission systems with the effects of gearbox induced vibrations and mass imbalances of the rotor.
Choy, F. K. +3 more
core +1 more source
Piezoceramics-based Devices for Active Balancing of Flexible Shafts [PDF]
, 2006 This paper focuses on vibration control of flexible shafts by means of rotorfixed piezoelectric materials. The target is to realize compact solutions for the suppression of problematic resonant vibration at so-called flexural critical speeds.
Boer, A. de, Sloetjes, P.J.
core +1 more source