An investigation of 3-dimesional (3D) effects on electrical impedance tomography is reported. 3D effects in measurement, simulation and analytical models are described. A 3D attenuation range (75% attenuation) from the sensing plane is suggested as one third of process vessel’s diameter. The imaging trajectory of an axially moving object is found towards the central axis of a process vessel whe...

Dielectric dispersion and relaxation behaviour of aqueous solution grown polymeric nanocomposite films consisting poly(vinyl alcohol) (PVA) alumina (Al2O3) (PVA–x wt% Al2O3 (x = 0, 1, 3 5)) have been studied in the frequency range from 20 Hz to 1 MHz by employing dielectric spectroscopy (DRS). It is found that at constant frequency, real part complex permittivity increases nonlinearly with incr...

The mixed metal oxides Bi2MoO6 and La-doped were prepared by the sol–gel method. Then, varying quantities of as-prepared blended with graphene oxide (GO), employing sonication, to obtain Bi2MoO6/GO (BM/GO) La-Bi2MoO6/GO (LBM/GO) nanocomposites. These materials characterized different techniques such as thermal gravimetric analysis (TGA), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), ph...

BACKGROUND Early detection of melanoma is vital for treatment outcome and survival. Short-term sequential digital dermoscopic monitoring (ST-SDDM) involves the capture and assessment of dermoscopic images of one or more atypical melanocytic lesions (AMLs), at baseline and after four months, in order to detect early morphologic changes. Electrical impedance spectroscopy (EIS) is a diagnostic too...

Based on the new theoretical approach and the self-consistent iteration procedure for calculating the limiting values (e(N) and e(0)) of the frequency-dependent permittivity, it becomes possible to recognize the fitting function for the function e(jo) measured for a complex system representing plant tissues of fresh fruits and vegetables in the frequency range (10–1.8 10Hz). The recognized fitt...

Recently, considerable interest and effort have been devoted to the on-site detection of low-concentration pathogenic bacteria in order to deter infectious diseases and bioterrorism. Conventionally, bacteria detection involves culturing, which is time-consuming and unfeasible under field conditions. Microfluidic devices with integrated electrical detection will enable fast, low-cost, and portab...

A series of animal experiments was conducted to characterize changes in the complex impedance of chronically implanted electrodes in neural tissue. Consistent trends in impedance changes were observed across all animals, characterized as a general increase in the measured impedance magnitude at 1 kHz. Impedance changes reach a peak approximately 7 days post-implant. Reactive responses around in...

Dielectric properties of clove oil were determined using an impedance gain phase analyzer (HP 4194 A) at discrete frequencies between 10 kHz and 3 MHz and a range of temperature between 25 °C and 45 °C. A micro processor controller based temperature controller (Julabo F-25) was used for keeping the temperature of clove oil constant. Dielectric constant of the sample is found to decrease with in...