Results 21 to 30 of about 1,562,856 (294)

Computational analysis of contamination in Kojima Lake using upwind-type finite element method [PDF]

open access: yes, 1998
We have computed the phase of spreading contaminations in Kojima Lake by using the upwind-type finite element method. We have treated the two cases: the pollutant flows from the Sasagase river and from the Kurashiki River.
Ishikawa, Hirofumi   +2 more
core   +1 more source

Homogeneity Characterization of Textile-Integrated Wearable Sensors based on Impedance Spectroscopy

open access: yesSensors, 2022
One of the main challenges during the integration of a carbon/polymer-based nanocomposite sensor on textile substrates is the fabrication of a homogeneous surface of the nanocomposite-based thin films, which play a major role in the reproducibility of ...
Hanen Nouri   +3 more
doaj   +1 more source

Realization of a fractional-order RLC circuit via constant phase element [PDF]

open access: yesInternational Journal of Dynamics and Control, 2021
AbstractIn the paper, a fractional-order RLC circuit is presented. The circuit is realized by using a fractional-order capacitor. This is realized by using carbon black dispersed in a polymeric matrix. Simulation results are compared with the experimental data, confirming the suitability of applying this new device in the circuital implementation of ...
Caponetto R., Graziani S., Murgano E.
openaire   +1 more source

Electrochemical Impedance Spectroscopy in the Characterisation and Application of Modified Electrodes for Electrochemical Sensors and Biosensors

open access: yesMolecules, 2022
Electrochemical impedance spectroscopy is finding increasing use in electrochemical sensors and biosensors, both in their characterisation, including during successive phases of sensor construction, and in application as a quantitative determination ...
Christopher M. A. Brett
doaj   +1 more source

Scaling of Electrode-Electrolyte Interface Model Parameters In Phosphate Buffered Saline [PDF]

open access: yes, 2014
We report how the impedance presented by a platinum electrode scales with the concentration of phosphate buffered saline (PBS). We find that the constant phase element of the model scales with approximately the log of concentration, whereas the ...
Jones, Mark Hedley, Scott, Jonathan B.
core   +2 more sources

The Chemical Compositions Of RR Lyrae Type C Variable Stars [PDF]

open access: yes, 2014
We present a detailed chemical abundance study of eight RR Lyrae variable stars of subclass c (RRc). The target RRc stars chosen for study exhibit "Blazhko-effect" period and amplitude modulations to their pulsational cycles.
Gomez, Thomas   +3 more
core   +1 more source

Application of a Coaxial-Like Sensor for Impedance Spectroscopy Measurements of Selected Low-Conductivity Liquids

open access: yesSensors, 2013
The paper presents a coaxial-like sensor operating in the 20 Hz–2 MHz frequency range used to determine the electrical properties of selected liquids of low electrical conductivity.
Wojciech Skierucha   +5 more
doaj   +1 more source

Diffractive optical elements with square concentric rings of equal width [PDF]

open access: yes, 2010
A diffractive optical element having equal-width concentric square rings is analyzed in this article. This constant width makes possible its realization using spatial light modulators or square pixels phase screens.
Hecht   +7 more
core   +5 more sources

Accurate Constant Phase Elements Dedicated for Audio Signal Processing [PDF]

open access: yesApplied Sciences, 2019
This review paper introduces real-valued two-terminal fully passive RC ladder structures of the so-called constant phase elements (CPEs). These lumped electronic circuits can be understood as two-terminal elements described by fractional-order (FO) dynamics, i.e., current–voltage relation described by non-integer-order integration or derivation.
openaire   +2 more sources

Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses

open access: yesElektronika ir Elektrotechnika, 2019
This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports.
Roman Sotner   +4 more
doaj   +1 more source

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