Results 21 to 30 of about 372,868 (297)

Passive wireless antenna sensor for strain, temperature, crack and fatigue measurement [PDF]

open access: yes, 2014
An apparatus and method is provided for monitoring a condition of a structure using a passive wireless antenna sensor having a known resonant frequency when mounted on the structure.
Carter, Ronald L.   +3 more
core   +1 more source

Nickel Thin Film Resonantly Generated at a Rate of Megahertz

open access: yesInternational Journal of Electrochemical Science, 2016
Resonant frequencies at which masses of Ni thin films deposited from a nickel sulfamate solution significantly increase are observed using a rectangular pulse current technique having a frequency of the megahertz scale.
M. Saitou
doaj   +1 more source

Analysis of the Thermally Induced Packaging Effects on the Frequency Drift of Micro-Electromechanical System Resonant Accelerometer

open access: yesMicromachines, 2023
Due to the working principle of MEMS resonant accelerometers, their thermally induced frequency drift is an inevitable practical issue for their extensive application.
Xiaorui Bie   +5 more
doaj   +1 more source

Middle ear resonance in infants: Age effects

open access: yesInternational Archives of Otorhinolaryngology, 2012
Summary Introduction: The resonant frequency is the probe frequency in which susceptance is 0 due to the neutralization of the forces of mass and stiffness components that control the middle ear.
Karina Delgado André   +2 more
doaj   +3 more sources

Dual-Band Band-Pass Filter with Fixed Low Band and Fluidically-Tunable High Band

open access: yesSensors, 2017
In this work, we present a dual-band band-pass filter with fixed low-band resonant frequency and tunable high-band resonant frequency. The proposed filter consists of two split-ring resonators (SRRs) with a stub and microfluidic channels.
Eiyong Park, Daecheon Lim, Sungjoon Lim
doaj   +1 more source

Control of scroll wave turbulence using resonant perturbations [PDF]

open access: yes, 2008
Turbulence of scroll waves is a sort of spatio-temporal chaos that exists in three-dimensional excitable media. Cardiac tissue and the Belousov-Zhabotinsky reaction are examples of such media.
A. S. Mikhailov   +8 more
core   +2 more sources

Performance Validation of Resonant Wave Power Converter with Variable Moment of Inertia

open access: yesEnergies, 2023
This study focuses on the performance validation of a wave energy converter (WEC) equipped with resonant frequency adjustment capability. Achieving resonance with the oscillation period of waves is crucial for maximizing the efficiency of wave energy ...
In-Ho Kim   +2 more
doaj   +1 more source

Research Progress of Locally Resonance Acoustic Metamaterials [PDF]

open access: yesE3S Web of Conferences, 2021
Bragg scattering phonon crystal and locally resonant acoustic metamaterials were introduced. In order to generate noise reduction, the lattice constant of Bragg scattering phonon crystal should be of the same order of magnitude as the wave length of the ...
Zhehua Du
doaj   +1 more source

Bayesian models for the determination of resonant frequencies in a DI diesel engine [PDF]

open access: yes, 2011
A time series method for the determination of combustion chamber resonant frequencies is outlined. This technique employs the use of Markov-chain Monte Carlo (MCMC) to infer parameters in a chosen model of the data.
Bodisco, Tim   +3 more
core   +2 more sources

Digital Resonant Controller based on Modified Tustin Discretization Method

open access: yesAdvances in Electrical and Computer Engineering, 2016
Resonant controllers are used in power converter voltage and current control due to their simplicity and accuracy. However, digital implementation of resonant controllers introduces problems related to zero and pole mapping from the continuous to the ...
STOJIC, D.
doaj   +1 more source

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