Results 271 to 280 of about 282,489 (306)

Electric impedance spectroscopy of human atherosclerotic lesions

Atherosclerosis, 2009
The aim of this in vitro study was to investigate the feasibility of a new highly flexible microelectrode on human tissue and its potential of differentiating atherosclerotic lesions by electric impedance spectroscopy (EIS).Electric impedance measurements (EIM) were performed on 148 spots of 7 aortic and 6 femoral human arteries at 1kHz, 10kHz and ...
Ines, Streitner, Markus, Goldhofer, Sungbo, Cho, Hagen, Thielecke, Ralf, Kinscherf, Florian, Streitner, Jürgen, Metz, Karl K, Haase, Martin, Borggrefe, Tim, Suselbeck   +9 more
openaire   +2 more sources

Code-Division-Multiplexed Electrical Impedance Tomography Spectroscopy

IEEE Transactions on Biomedical Circuits and Systems, 2009
Electrical impedance tomography uses multiple impedance measurements to image the internal conductivity of an object, such as the human body. Code-division multiplexing is proposed as a new method that can provide simultaneous impedance measurements of the multiple channels.
McEwan, Alistair, Tapson, Jonathan C., Schaik, Andre van, Holder, David S.   +3 more
openaire   +3 more sources

A hybrid Genetic Algorithm and Levenberg-Marquardt (GA-LM) method for cell suspension measurement with electrical impedance spectroscopy.

Review of Scientific Instruments, 2020
A hybrid Genetic Algorithm (GA) and Levenberg-Marquardt (GA-LM) method is proposed for cell suspension measurement with electrical impedance spectroscopy.
Li Wang, Songpei Hu, Kai Liu, Bai Chen, Hongtao Wu, J. Jia, Jiafeng Yao   +6 more
semanticscholar   +1 more source

Electrical Impedance Spectroscopy and Roots

2011
This chapter reviews studies dealing with the characterization of the plant root system by the electrical impedance method, i.e., with resistance and capacitance at a single frequency or at multifrequencies, according to the approach used in electrical impedance spectroscopy (EIS). Several studies have shown a correlation between electrical capacitance
Repo, Tapani, Cao, Yang, Silvennoinen, Raimo, Ozier Lafontaine, Harry   +3 more
openaire   +3 more sources

Monitoring living tissues by electrical impedance spectroscopy

Annals of Biomedical Engineering, 1994
Solving the experimental difficulties associated with measurement of the electrical impedance of living tissues gives access to valuable tissue compartment parameters which are sensed within seconds using minimally invasive, simple metallic electrodes.
P, Héroux, M, Bourdages
openaire   +2 more sources

Online condition monitoring of Photovoltaic (PV) cells by implementing electrical impedance spectroscopy using a switch-mode DC-DC converter

European Conference on Cognitive Ergonomics, 2020
This work focuses on the real-time condition monitoring of Photovoltaic (PV) cells by implementing electrical impedance spectroscopy (EIS) using a boost converter.
Linda Shelembe, P. Barendse
semanticscholar   +1 more source

Electrical Impedance Spectroscopy of the Human Prostate

IEEE Transactions on Biomedical Engineering, 2007
Tissue electrical impedance is a function of its architecture and has been used to differentiate normal and cancer tissues in a variety of organs including breast, cervix, skin, and bladder. This paper investigates the possibility of differentiating normal and malignant prostate tissue using bioimpedance spectra.
Ryan J, Halter, Alex, Hartov, John A, Heaney, Keith D, Paulsen, Alan R, Schned   +4 more
openaire   +2 more sources

Parametric modelling for electrical impedance spectroscopy system

Medical & Biological Engineering & Computing, 1996
Three parametric modelling approaches based on the Cole-Cole model are introduced. Comparison between modelling only the real part and modelling both the real and imaginary parts is carried out by simulations, in which random and systematic noise are considered, respectively.
L, Lu, L, Hamzaoui, B H, Brown, B, Rigaud, R H, Smallwood, D C, Barber, J P, Morucci   +6 more
openaire   +2 more sources

Electrical Impedance Spectroscopy

2018
This chapter gives some background on impedance spectroscopy and tissue impedance but also about the instrumentation used for measuring transfer impedance of a biological material under study. The instrumentation concerned here is the current source for applying a current to tissue and the differential amplifier for measuring the resultant voltage.
openaire   +1 more source

Direct assessment of skin epithelial barrier by electrical impedance spectroscopy

Allergy. European Journal of Allergy and Clinical Immunology, 2019
Many skin and mucosal inflammatory disorders, such as atopic dermatitis, have been associated with an impaired epithelial barrier function, which allows allergens, pollutants, or microbes to enter the tissue and activate the immune response.
Arturo O. Rinaldi, H. Morita, P. Wawrzyniak, A. Dreher, S. Grant, Per Svedenhag, C. Akdis   +6 more
semanticscholar   +1 more source