Results 31 to 40 of about 799,107 (315)

Investigative Study of Vertical Electrodes Encased in Concrete/Mortar with Various Sizes of Air Voids

open access: yesEnergies, 2021
Ionisation can occur in the soil when high impulse currents are subjected to grounding systems. This occurrence is generated by a difference in the dielectric strength value between the soil and air voids.
Hanis Hamizah Hizamul-Din   +3 more
doaj   +1 more source

Evaluation of Respiratory Impedance in Asthma and COPD by an Impulse Oscillation System

open access: yesInternal Medicine, 2010
The purpose of this study was to clarify the differences in physiological properties of the airways between asthma and COPD using an impulse oscillation system (IOS).Subjects comprised 95 stable COPD patients, 52 never-smoker asthma patients and 29 healthy never-smokers >60 years old, all matched for age, in whom respiratory impedance was examined by ...
Kanda, Shintarou   +5 more
openaire   +3 more sources

Time-varying system identification methods for describing human joint impedance

open access: yes, 2021
This dataset contains data and scripts used in:"Quantitative comparison of time-varying systemidentification methods to describe human joint impedance",Annual Reviews in Control, 2021The data includes simulation and experimental data to identify ...
Gaia Cavallo (11602845)   +5 more
core   +1 more source

Impedance Control for a Free-Floating Robot in the Grasping of a Tumbling Target with Parameter Uncertainty

open access: yes, 2006
This paper addresses an impedance control for free-floating space robot in the grasping of a tumbling target with model uncertainty. Firstly, the operational space dynamics for a free-floating robot is derived with a novel, computationally efficient ...
Abiko, Satoko   +5 more
core   +1 more source

A Study on Frequency Response Functions in Pavement Engineering

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2023
Mechanical impedance (MI) defines the ability of a system to vibrate as a consequence of force application. In the recent years, the correlation of this parameter with tire-road noise and other characteristics has gained certain attention.
Filippo G. Pratico   +3 more
doaj   +1 more source

Impedance and impulse response measurements using low-cost components [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1982
A thin 27-mm-o.d. disk transducer (from Radio Shack 273-060 signaler) is RTV sealed to the end of a measurement tube whose 15 mm i.d. not only approximates the transducer disk's nodal circle but also the i.d. of a clarinet, sax, or trumpet mouthpiece. A 10-mm-o.d.
M. I. Ibisi, A. H. Benade
openaire   +1 more source

Measurement of impulse noise propagation over natural impedance surfaces [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1985
The peak sound pressure level decay with distance of the impulse noise from hand grenade simulators has been measured over the following types of surfaces: water, swamp, rocky ground with small bushes, dead grass with sparse snow cover, and dense evergreen forest. The ground impedance is estimated for each surface using the calculation of R. Raspet. H.
Nelson Lewis, Richard Raspet
openaire   +1 more source

On Computing Impulse Responses from Frequency-Domain Finite Element Solutions

open access: yes, 2022
Art. 2050024, 31 S.In acoustics, knowledge of the impulse response of a system is often important. While impulse responses may be measured, they may also be predicted using numerical methods.
Prinn, A.G.
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Parameter Estimation of a Grid-Tied Inverter Using In Situ Pseudo-Random Perturbation Sources

open access: yesEnergies, 2023
Inverters are playing an increasingly important role in the electrical utility grid due to the proliferation of renewable energy sources. Obtaining inverter models with accurate parameters is, therefore, essential for grid studies and design.
Ian Paul Gerber   +2 more
doaj   +1 more source

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