A central loop Transient Electromagnetic TEM Resistivity Survey was conducted at the Geysir high temperature geothermal area as part the project of the author. The area is situated 110 km away from Reykjavik and lies in a shallow valley elongated north-south. Geologically it is surrounded by three volcanic domes made-up of rhyolites, hyloclastites and inter-glacial basaltic lava that obtain hea...

We present a multidisciplinary approach for characterization of a crude oil-contaminated site (Trecate, Italy), integrating geophysical data, such as subsoil electrical potential (in millivolts) and electrical resistivity (in ohm meters) distribution, with hydrogeological and bio-chemical data. Self-potential measurements have been evaluated together with active geoelectrical measurements and h...

Abstract Background and Aims Bioimpedance spectroscopy (BIS) is a non-invasive diagnostic tool to assess volume status body composition through the measurement of voltage drops in alternating currents subsequent extrapolation extracellular (R0), intracellular (Ri), total (RInf) resistances. Currently available devices mostly rely on disposable electrodes require supine position. Here we tested ...

The investigations of Pd/Ge/Au contact system forming regimes influence on the specific resistivity to n-type conductivity GaAs layer were carried out. method samples surface treatment before layers evaporation and thermal annealing in H 2 , N Ar atmosphere parameters was investigated. value (2-3)· 10 -6 Ohm· cm at reduced temperature 190 o C archived.. Keywords: Pd/Ge/Au, n-GaAs, treatment,

We calculate the electronic resistivity of a GaAs-based semiconductor quantum wire in the presence of acoustic phonon scattering. We find that the usual Drude-Boltzmann transport theory leads to a low temperature activated behavior instead of the well-known Bloch-Grüneisen power law. Many-body electron-phonon renormalization, which is entirely negligible in higher dimensional systems, has a dra...

The electrophysiological properties of embryonic chick hearts (ventricles) change during development; the largest changes occur between days 2 and 8. Resting potential (E(m)) and peak overshoot potential (+E(max)) increase, respectively, from -35 mv and +11 mv at day 2 to -70 mv and +28 mv at days 12-21. Action potential duration does not change significantly. Maximum rate of rise of the action...

Discrepancies in body fluid estimates between segmental bioimpedance spectroscopy (SBIS) and gold-standard methods may be due to the use of a uniform value of tissue resistivity to compute extracellular fluid volume (ECV) and intracellular fluid volume (ICV). Discrepancies may also arise from the exclusion of fluid volumes of hands, feet, neck, and head from measurements due to electrode positi...

A four-stage parallel-plate gas insulated Blumlein pulser is under construction. This 90-ohm 16-ns (FWHM) pulser, targeted for operation a~ 400 kV, will be switched by an array of photoconductors triggered by a 15-J, Nd:glass laser for a 1-to-2-ns rise time. A smaller single-stage 100-kV 60-ohm 14-ns (FWHM) pulser, which has been used as a proof-of-principle testbed for the photoconductive swit...

electromagnetic methods are widely used for the study of subsurface resistivity structures. these methods are based on the response of the subsurface structures to electromagnetic fields. the magnetotelluric (mt) method is an electromagnetic technique that uses the natural, time varying electric and magnetic field components measured at right angles to the surface of the earth, to make inferenc...