Results 41 to 50 of about 5,285,365 (393)

Tacticity in chiral phononic crystals

open access: yesNature Communications, 2019
Here, the authors study the influence of tacticity on the dynamic behaviour of chiral structured periodic media comprising rotational inertia elements. This opens the way towards new mechanisms for wave control by exploiting spin-spin coupling mechanism.
A. Bergamini   +7 more
doaj   +1 more source

Preparation and Dielectric Sensitivity of Polyurethane Composite Fiber Membrane Filled with BaTiO3

open access: yesMembranes, 2022
Polyurethane dielectric elastomer (PUDE) is considered a potential underwater flexible actuator material due to its excellent designability and environmental tolerance at the molecular level. Currently, the application of the polyurethane elastomer as an
Gang Lu   +4 more
doaj   +1 more source

The Effect of a Flexible Electrode on the Electro Deformability of an Actuating Unit of a MDI-Polyurethane Composite Fiber Membrane Filled with BaTiO3

open access: yesMembranes, 2022
The electro deformability of an actuating unit of a polyurethane dielectric elastomer (PUDE) is affected by many factors. The agglomeration of dielectric fillers faced by the traditional dielectric modification methods will lead to the instability of the
Gang Lu   +4 more
doaj   +1 more source

Inhibitory “noise” [PDF]

open access: yesFrontiers in Cellular Neuroscience, 2010
Cortical neurons in vivo may operate in high-conductance states, in which the major part of the neuron's input conductance is due to synaptic activity, sometimes several-fold larger than the resting conductance. We examine here the contribution of inhibition in such high-conductance states.
openaire   +4 more sources

Tribological characteristics and mechanism of nitrile butadiene rubber coated with typical liquid lubricants

open access: yesPolymer Testing, 2022
When marine stern shafts operate under low speed and heavy load conditions, the metal shaft and water-lubricated bearing will be in a state of boundary lubrication or even dry friction.
Yinsong Liu   +4 more
doaj  

Performance of DPSK Signals with Quadratic Phase Noise [PDF]

open access: yesIEEE Transactions on Communications, vol. 53, no. 8, pp. 1361-1365, August 2005, 2004
Nonlinear phase noise induced by the interaction of fiber Kerr effect and amplifier noises is a quadratic function of the electric field. When the dependence between the additive Gaussian noise and the quadratic phase noise is taking into account, the joint statistics of quadratic phase noise and additive Gaussian noise is derived analytically.
arxiv   +1 more source

Ultrasonic signal processing techniques for Pipeline: A review

open access: yesMATEC Web of Conferences, 2019
Monitoring pipeline wall is an important issue in oil and gas industries. Over time, the defect can occur in the pipeline and can impact surrounding population, environment and may result in injuries or fatalities.
Naqiuddin M. S. M   +3 more
doaj   +1 more source

Partially Adaptive Multichannel Joint Reduction of Ego-noise and Environmental Noise [PDF]

open access: yesICASSP 2023 - 2023 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), 2023
Human-robot interaction relies on a noise-robust audio processing module capable of estimating target speech from audio recordings impacted by environmental noise, as well as self-induced noise, so-called ego-noise. While external ambient noise sources vary from environment to environment, ego-noise is mainly caused by the internal motors and joints of
arxiv  

Crackling noise [PDF]

open access: yesNature, 2001
Crackling noise arises when a system responds to changing external conditions through discrete, impulsive events spanning a broad range of sizes. A wide variety of physical systems exhibiting crackling noise have been studied, from earthquakes on faults to paper crumpling. Because these systems exhibit regular behavior over many decades of sizes, their
Karin A. Dahmen   +2 more
openaire   +3 more sources

Numerical simulation of temperature variation in water layer induced by thermal jet in weak stratified environment

open access: yesAIP Advances, 2022
In order to explore the rising and diffusing path of an underwater thermal jet and the temperature variation of each water layer in the typical ocean thermohaline stratified environment, a three-dimensional mass-heat transport model of the thermal jet in
Feiyang Luo   +3 more
doaj   +1 more source

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