Pernelle Bernardi

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The behavior of cultured myotubes from chick embryos exposed to microwaves has been experimentally analyzed. Recordings of acetylcholine-induced currents have been obtained via patch-clamp techniques using both cell-attached (single-channel current recording) and whole-cell (total current recording) configurations. During the exposure to low-power(More)
A two-dimensional cylindrical-coordinate (2-D-cyl) finite-difference (FD) time-domain code together with an explicit 2-D-cyl FD solution of the bioheat equation were used for studying a 2450-MHz cap-choke antenna designed for microwave cardiac ablation. Following validation based on results available in literature, the numerical tools were used to evaluate(More)
This paper presents an optimization procedure based on the minimization of a cost function and devoted to implement realistic numerical models of cellular phones to be used inside a finite-difference time-domain code. The adopted cost function depends on geometrical and electrical parameters of the phone and quantifies the accuracy of the model by comparing(More)
—A full-wave analysis of the scattering parameters of a straight-to-bent microstrip line coupling is performed using a FEM technique. The numerical results, showing the influence played by the geometrical parameters of the structure on the electromagnetic coupling, are then employed to derive an equivalent circuit useful to be employed in CAD tools. A third(More)
Issues related to moving elements in space and instruments working in broader wavelength ranges lead to the need for robust polarimeters that are efficient on a wide spectral domain and adaptable to space conditions. As part of the UVMag consortium, which was created to develop spectropolarimetric UV facilities in space, such as the Arago mission project,(More)
In this paper radiofrequency power absorption and temperature elevation in the thorax of a pacemaker (PM) holder exposed to the field generated by a 1.5 T (64 MHz) magnetic resonance imaging (MRI) apparatus have been numerically studied. A pacemaker model, constituted by a metallic box equipped with a catheter, has been inserted inside an anatomical body(More)
A new ionic model of the neuronal-membrane electrical activity has been developed. The proposed model generalizes those usually quoted in the literature, taking into account the significant ionic currents, the temperature dependence of the electrical parameters, and the stochastic synaptic inputs. The model allows us to simulate both the membrane firing(More)
The membrane model of Connor and Stevens was used to calculate the response of a neuron to an injected sinusoidal current. This stimulating current simulates the effects of cell exposure to incident time-harmonic electromagnetic fields. The theoretical results obtained with this model were compared with intracellular recordings carried out during the(More)
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