Results 261 to 270 of about 190,722 (315)

Effective conductivity of cell suspensions

IEEE Transactions on Biomedical Engineering, 2002
Using finite-element method (FEM) effective conductivity of cell suspension was calculated for different cell volume fractions and membrane conductivities. Cells were modeled as spheres having equivalent conductivity and were organized in cubic lattices, layers and clusters.
Mojca Pavlin, Tomaz Slivnik, Damijan Miklavcic   +2 more
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Effect of conductivity interfaces in electrocardiography

The Bulletin of Mathematical Biophysics, 1968
This paper develops numerical techniques for two problems of interest in electrocardiography: (1) the determination of infinite-media surface potential gradients from boundedmedia torso potentials, and (2) the effects of lung-torso, blood mass-torso, and torso-air conductivity interfaces on torso surface potentials.
Pilkongton, T. C., Barr, R. C., Rogers, C. L.   +2 more
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Memory effects in conducting polymers

Physical Review Letters, 1989
The kinetics of electrochemical doping of polyaniline films has been studied using in situ ESR experiments. It has been found that the kinetics and the doping level achieved during a potential-reading step depend on the previous electrochemical events undergone by the sample.
, Villeret, , Nechtschein
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Concealed conduction effects in the atrium

IEEE Engineering in Medicine and Biology Magazine, 2009
A one-dimensional (1-D) model of the atrium together with the sinoatrial (SA) and atrioventricular (AV) nodes is presented in this article. The two nodes are each modeled by 15-element, diffusively coupled, modified van der Pol oscillator chains, while the atrium tissue is represented by a 90-element chain of diffusively coupled FitzHugh-Nagumo (FHN ...
Jan J, Zebrowski, Pawel, Kuklik, Teodor, Buchner, Rafał, Baranowski   +3 more
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Conduct Disorder and Neighborhood Effects

Annual Review of Clinical Psychology, 2018
There has been a considerable amount of scholarly attention to the relationship between neighborhood effects and conduct disorder, particularly in recent years. Having said this, it has been nearly two decades since a comprehensive synthesis of this literature has been conducted.
Wesley G, Jennings, Nicholas M, Perez, Jennifer M, Reingle Gonzalez   +2 more
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Transient effect in conducting ring

Archiv für Elektrotechnik, 1988
A numerical method of calculation of the current density in a a thin conducting ring generated by external transient field is presented. The method discussed is based on the integral formulas. Current density within ring as a function of position and time is given. An experiment verification is presented.
Barel, Alain, Szymanski, G.
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Effective thermal conductivity of composites

International Journal of Heat and Mass Transfer, 2014
Abstract The paper employs a theoretical model to evaluate the thermal conductivity of composites under two thermal assumptions which allow to solve the heat conduction equation. The composite is made of a ceramic-silica matrix and a fiber reinforcement. Three different materials are investigated as reinforcement, i.e. asbestos, steel and copper. The
GORI, FABIO, CORASANITI, SANDRA
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Correlation effects in hopping conductivity

Physical Review B, 1989
We introduce an alternative mapping of the hopping problem onto a random resistor network, which takes into account correlations among the occupation probabilities of different sites. The effect of correlations on the low-temperature conductivity of one-dimensional chains in the nearest-neighbor and variable-range-hopping cases is investigated by ...
, Chase, , Thouless
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Effective conductivity of nonlinear composites

Physical Review B, 1992
The perturbation expansion method is used to compute the effective conductivity of nonlinear composite media. We develop perturbation expansions to solve nonlinear partial differential equations pertaining to the electrostatic boundary value problems.
, Gu, , Yu
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Effects of Dobutamine on atrioventricular conduction

American Heart Journal, 1975
Dobutamine, a new beta-stimulating catecholamine, has been investigated in terms of its effect upon atrioventricular conduction. Bundle of His recordings were obtained on six patients in basal conditions and with right atrial pacing at rates of 100, 120, and 140 per minute.
C, Bianchi, R, Diaz, C, Gonzales, J, Beregovich   +3 more
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