Results 21 to 30 of about 99,897 (293)

Performance of Electrical Spectroscopy using a Resper Probe to Measure the Salinity and Water Content of Concrete or Terrestrial Soil [PDF]

open access: yes, 2011
This paper discusses the performance of electrical spectroscopy using a RESPER probe to measure the salinity s and volumetric content {\theta}W of the water in concrete or terrestrial soil.
Settimi, A.
core   +4 more sources

Electrode effects revisited [permittivity measurement] [PDF]

open access: yes2001 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.01CH37225), 2002
Electrode effects are often observed as an instrumental artifact associated with measurements of electrical permittivity at low frequencies. Such effects introduce a polarization capacity, C/sub p/, associated with the interface between the electrode and the material under test.
K.L. Stricklett, J.R. Baker-Jarvis
openaire   +1 more source

Electromagnetic Technique for Hydrocarbon and Sand Transport Monitoring: Proof of Concept

open access: yesIEEE Access, 2020
Electromagnetic metering offers significant promise in the measurement of low-conductivity medium like in multiphase flow. Such measurements rely on the measurement of conductivity contrasts formed by two medium of substances, one substance being ...
Yessica Arellano, Andy Hunt, Lu Ma
doaj   +1 more source

Detection of Electromagnetic Inclusions using Topological Sensitivity [PDF]

open access: yes, 2016
In this article a topological sensitivity framework for far field detection of a diametrically small electromagnetic inclusion is established. The cases of single and multiple measurements of the electric far field scattering amplitude at a fixed ...
Abbas, Tasawar   +3 more
core   +3 more sources

Amplitude-only measurements of a dual open ended coaxial sensor system for determination of complex permittivity of materials [PDF]

open access: yes, 2013
This paper describes a novel permittivity measurement technique using dual open ended coaxial sensors. The magnitudes of the reflection coefficient from two open ended coaxial sensors were used to determine complex reflection coefficients and ...
Abbas, Zulkifly   +4 more
core   +1 more source

Low Power Contactless Bioimpedance Sensor for Monitoring Breathing Activity

open access: yesSensors, 2021
An electronic circuit for contactless detection of impedance changes in a tissue is presented. It operates on the principle of resonant frequency change of the resonator having the observed tissue as a dielectric.
Marko Pavlin, Franc Novak, Gregor Papa
doaj   +1 more source

Permittivity measurement of minerals

open access: yesJournal of Physics: Conference Series, 2013
An electromagnetic logging tool moves along a borehole to measure continuously the complex dielectric permittivity of the rock formation. Dielectric properties of formation fluids and minerals are required to interpret the log. Methods to measure mineral permittivities are reviewed and experimental results are described for various particulate minerals.
V J Anderson, A Clarke, G H Meeten
openaire   +1 more source

Measuring the optical permittivity of two-dimensional materials without a priori knowledge of electronic transitions

open access: yesNanophotonics, 2018
We propose a deterministic method to measure the optical permittivity of two-dimensional (2D) materials without a priori knowledge of the electronic transitions over the spectral window of interest.
Jung Gwang-Hun, Yoo SeokJae, Park Q-Han
doaj   +1 more source

Fire-induced changes in the dielectric constant of lichens in plateau palsas of the Nadym-Pur interfluve

open access: yesActa Biologica Sibirica, 2023
The paper analyzed the complex permittivity of lichens of the genus Cladonia sampled from areas disturbed by fire and from undisturbed plateau palsas in the Nadym-Pur interfluve, Western Siberia.
Tatiana D. Kochetkova   +5 more
doaj   +1 more source

Dielectric permittivity estimation via TDR measurements

open access: yes2009 International Conference on Electromagnetics in Advanced Applications, 2009
In this paper the determination of the permittivity of liquid or homogeneous dielectrics from their time-domain response is adressed. The analysis is based on a simplified model of the TDR measurement setup, where the probe is described by an ideal transmission line with a Debye permittivity. A simple formula to evaluate the permittivity is introduced,
Nakano, M. S., Savi, P.
openaire   +2 more sources

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