Abstract At landfill sites, uncontrolled leachate is a serious cause of groundwater and soil contamination at landfills can occur extensively when there are looploopholesin the vertical HDPE (High-density polyethylene) membrane. For this reason, detecting membranes necessary. The conventional electrode running poles approach limited, it reflects distribution resistivity in 2D subsurface profile...

We have carried out van der Pauw resistivity and Hall effect measurements on a series of Molecular Beam Epitaxy InAs/GaAs superlattice samples containing InAs quantum dots. Three growth parameters were varied, the InAs coverage, the number of repetitions of the InAs/GaAs layers, and the GaAs spacer thickness. The results can be grouped in two sets, those samples presenting low and high resistiv...

OBJECTIVES To analyze the passive electrical properties of a healed infarction and assess their role on transmission of contiguous ischemic ST segment potential changes. METHODS We measured tissue resistivity (omega cm) at 1 kHz and the epicardial ST segment during 1 h of proximal reocclusion of the left anterior descending (LAD) coronary artery in 12 anesthetized pigs with one-month-old tran...

The residual resistivity of metals at the absolute zero of temperature is usually understood in terms of electrons scattering from random impurities. This mechanism, however, does not take into account dynamical many-body effects, which cannot be described in terms of a static electron-impurity potential. Here we show that dynamical corrections to the resistivity, already known to play a role i...

OBJECTIVE To determine the optimized protocol for wet monopolar radiofrequency ablation (RFA) using a perfused-cooled electrode to induce coagulation necrosis in the ex vivo bovine liver. MATERIALS AND METHODS Radiofrequency was applied to excised bovine livers in a monopolar mode using a 200W generator with an internally cooled electrode (groups A and B) or a perfused-cooled electrode (group...