Results 31 to 40 of about 5,592,166 (367)

Dynamics of a FitzHugh-Nagumo system subjected to autocorrelated noise [PDF]

open access: yes, 2008
We analyze the dynamics of the FitzHugh-Nagumo (FHN) model in the presence of colored noise and a periodic signal. Two cases are considered: (i) the dynamics of the membrane potential is affected by the noise, (ii) the slow dynamics of the recovery ...
Augello, G., Spagnolo, B., Valenti, D.
core   +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  

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

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

Low-Noise and High-Efficiency Near-IR SPADs in 110nm CIS Technology [PDF]

open access: yes, 2019
Photon detection at longer wavelengths is much desired for LiDAR applications. Silicon photodiodes with deeper junctions and larger multiplication regions are in principle more sensitive to near-IR photons.
Carmona Galán, Ricardo   +2 more
core   +1 more source

Investigation of the Uniformity of Gel Shrinkage by Imaging Tracer Particles Using X‐Ray Microtomography

open access: yesAdvanced Engineering Materials, EarlyView., 2023
A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal   +3 more
wiley   +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

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

Tomography by Noise [PDF]

open access: yesPhysical Review Letters, 2014
We present an efficient and robust method for the reconstruction of photon number distributions by using solely thermal noise as a probe. The method uses a minimal number of pre-calibrated quantum devices, only one on/off single-photon detector is sufficient.
Georg Harder   +3 more
openaire   +3 more sources

External and internal noise surveys of London primary schools [PDF]

open access: yes, 2004
Internal and external noise surveys have been carried out around schools in London, UK, to provide information on typical levels and sources to which children are exposed while at school. Noise levels were measured outside 142 schools, in areas away from
Bridget Shield   +14 more
core   +2 more sources

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