Results 11 to 20 of about 347,752 (281)

Efficient Cell Impedance Measurement by Dielectrophoretic Cell Accumulation and Evaluation of Chondrogenic Phenotypes. [PDF]

open access: yesMicromachines (Basel), 2022
The quantitative and functional analyses of cells are important for cell-based therapies. In this study, to establish the quantitative cell analysis method, we propose an impedance measurement method supported by dielectrophoretic cell accumulation.
Nakata N, Ishibashi Y, Miyata S.
europepmc   +2 more sources

Mini Review: Impedance Measurement in Neuroscience and Its Prospective Application in the Field of Surgical Neurooncology. [PDF]

open access: yesFront Neurol, 2021
Impedance measurement of human tissue can be performed either in vivo or ex vivo. The majority of the in-vivo approaches are non-invasive, and few are invasive. To date, there is no gold standard for impedance measurement of intracranial tissue.
Abboud T, Mielke D, Rohde V.
europepmc   +2 more sources

Capacitive Impedance Measurement: Dual-frequency Approach. [PDF]

open access: yesSensors (Basel), 2019
The most widely used technique for measuring capacitive impedances (or complex electrical permittivity) is to apply a frequency signal to the sensor and measure the amplitude and phase of the output signal.
Rêgo Segundo AK   +3 more
europepmc   +2 more sources

Design and Validation of Low-Cost, Portable Impedance Analyzer System for Biopotential Electrode Evaluation and Skin/Electrode Impedance Measurement. [PDF]

open access: yesSensors (Basel)
This paper presents a novel, low-cost, portable impedance analyzer system designed for biopotential electrode evaluation and skin/electrode impedance measurement, critical for enhancing bioelectrical signal quality in healthcare applications. In contrast
Panchal J, Singh MI, Singh M, Sandha KS.
europepmc   +2 more sources

A Portable Impedance Spectroscopy Measurement Method Through Adaptive Reference Resistance

open access: yesIEEE Access, 2021
In impedance spectroscopy measurement with traditional voltammetry, the measurement accuracy will be varied due to the measured impedance, which is changed with frequencies and does not match the reference resistor.
Xuanze Wang   +5 more
doaj   +1 more source

An Improved Impedance Measurement Method Based on Multi-Sine Signal Considering the Suppression of Noise Interference

open access: yesIEEE Access, 2021
Impedance measurement is a practical method to obtain the impedance characteristic of the power electronic equipment (PEE), which is important for the small-signal stability analysis.
Meng Li   +5 more
doaj   +1 more source

A new impedance measurement method and its application to stability analysis of the inverter‐grid system

open access: yesIET Renewable Power Generation, 2021
Grid‐connected inverter have been extensively used in the renewable energy grid‐connect systems, such as solar and wind. Interaction between the grid and the inverter may generate harmonic resonances that lead to reduced power quality and even ...
Junliang Liu   +3 more
doaj   +1 more source

Assessment of bioelectrical impedance analysis devices for data reliability of body impedance measurements. [PDF]

open access: yesFront Nutr
BackgroundBioelectrical impedance analysis (BIA) devices are widely used for body composition analyses, but their accuracy for body impedance measurements can vary significantly between BIA device models.
Kim DB, Shin SS, Kim WS.
europepmc   +2 more sources

Analysis of online impedance measurement range based on voltage disturbance injection

open access: yesEnergy Reports, 2020
The harmonic injection method is often used to measure the impedance of grid-connected inverter, which is necessary for impedance-based stability analysis of grid-connected systems.
Fei Li   +5 more
doaj   +1 more source

On the Effectiveness of Impedance-Based Fingerprint Presentation Attack Detection

open access: yesSensors, 2021
Within the last few decades, the need for subject authentication has grown steadily, and biometric recognition technology has been established as a reliable alternative to passwords and tokens, offering automatic decisions.
Jascha Kolberg   +6 more
doaj   +1 more source

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