[1] Relationships of the geomagnetic Sq field to the electric field, conductivity, and currents in the ionosphere were studied from the correlation of the Sq amplitude in the Y-component with that of the ionospheric electric field and Hall currents. The electric field was obtained from the observation by the MU radar from 1989 to 2001, and the currents were estimated from the obtained field and...

A fundamental problem in theoretical neurosciences is the inverse problem of source localization, which aims at locating the sources of the electric activity of the functioning human brain using measurements usually acquired by non-invasive imaging techniques. Such a technique is the electroencephalography (EEG) which measures the e↵ect of the electric activity of active brain regions through v...

PURPOSE To determine exposure to gradient switching fields of adults and children in a magnetic resonance imaging (MRI) scanner by evaluating internal electric fields within realistic models of adult male, adult female, and child inside transverse and longitudinal gradient coils, and to compare these results with compliance guidelines. MATERIALS AND METHODS Patients inside x-, y-, and z-gradi...

Magnetically enhanced inductively coupled plasmas (MEICP) and helicons have complex plasma electric-field coupling between the electric field and the plasma due to the tensor conductivity and multiple-dimensional antenna segments. Computed three-dimensional electric fields and electron temperatures are presented for a helicon reactor demonstrating azimuthal asymmetries and rotations of the elec...

This paper describes all the procedures and methods currently used at UPV (Universitat Politécnica de Valencia) and UJI (University Jaume I) for the development and use of sensors for multi-phase flow analysis in vertical pipes. This paper also describes the methods that we use to obtain the values of the two-phase flow magnitudes from the sensor signals and the validation and cross-verificatio...

Carbon Fiber Reinforced Polymer (CFRP) laminates are applied to many aerospace structures. For these laminated CFRP structures, it is quite difficult to detect internal damage such as delamination, matrix cracks, and local fiber breakages. Carbon fibers are adopted as reinforcement in CFRP and it is an excellent electric conductor at the same time. The carbon fiber has been used as a strain sen...

The complex dielectric constant is reported for multiwalled carbon nanotubes MWCNTs up to 105 Hz as a function of ac-electric field amplitudes Erot in phase and same frequency as the measurement and Eac different phase and fixed frequency with respect to the measurement . A slow relaxation process mode 1 is observed, which shifts to higher frequency with increasing Erot but is independent of Ea...

Dielectric elastomer actuator (DEA) micro- and nano-structures are referred to artificial muscles because of their specific continuous power and adequate time response. The bending measurement of an asymmetric, planar DEA is described. The asymmetric cantilevers consist of 1 or 5 μm-thin DEAs deposited on polyethylene naphthalate (PEN) substrates 16, 25, 38, or 50 μm thick. The application of a...

Diajrnostic measurement of electric skin conductivity (ESC) called the Ryodoraku system was introduced in mid 1950s by Nakatani. As has been shown by Ziobro et al. in case of infantile cerebral palsy, changes of ESC may provide a valuable electrophysiological parameter for monitoring a therapy. In this study ESC was measured in asthmatic children treated with a bioelectronic unit VEGASELECT. An...