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Computing Tower-Footing Grounding Impedance and GPR curves of Grounding Electrodes Buried in Multilayer Soils
(2019-09-01)
Grounding systems are essential to dissipate fault currents into soil to guarantee safe conditions to personnel and equipment. In this context, several approaches have been employed to calculate tower-footing grounding ...
Electrical transport properties and complex impedance investigation of Fe 3+ and La 3+ co-doping (Pb,Sr)TiO 3 thin films
(2018-10-01)
This work investigates the impact of Fe 3+ and La 3+ co-doping on the structural, electrical transport and dielectric relaxation properties of PST thin films. XRD and Raman spectroscopy data show that the Fe 3+ and La 3+ ...
Using the electrochemical impedance spectroscopy to characterize carbon steel in biodiesel medium
(2012-12-01)
Electrochemical impedance spectroscopy measurements using two carbon steel electrodes in soybean biodiesel medium, produced by methylic route, were performed in an electrochemical cell that allows positioning the two ...
Electrical and optical characteristics of SnO2 thin films prepared by dip coating from aqueous colloidal suspensions
(1997-12-01)
Starting from aqueous colloidal suspensions, undoped and Nb5+ doped SnO2 thin films have been prepared by using the dip-coating sol gel process. X-ray diffraction results show that films are polycrystalline with crystallites ...
Electrical and optical characteristics of SnO2 thin films prepared by dip coating from aqueous colloidal suspensions
(1997-12-01)
Starting from aqueous colloidal suspensions, undoped and Nb5+ doped SnO2 thin films have been prepared by using the dip-coating sol gel process. X-ray diffraction results show that films are polycrystalline with crystallites ...
Electrical impedance measurements of clathrate hydrates
(Universidade Tecnológica Federal do ParanáCuritibaPrograma de Pós-Graduação em Engenharia Elétrica e Informática Industrial, 2015-05-28)
Among the challenges in the oil and gas industry for hydrocarbon production, a featured area in recent years is known as flow assurance, which involves to guarantee the continuously stream of fluids (oil or gas) through ...
Electrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems
(Elsevier B.V., 2005-01-01)
The electrical and microstructural properties of SnO2-based varistors with the addition of 0.025 and 0.050 mol% of Fe2O3 have been characterised. Electric field (E) versus current density (J) curves showed that the effect ...
Electrical and micro structural properties of (Zn, Nb, Fe)-doped SnO2 varistor systems
(Elsevier B.V., 2005-01-01)
The electrical and microstructural properties of SnO2-based varistors with the addition of 0.025 and 0.050 mol% of Fe2O3 have been characterised. Electric field (E) versus current density (J) curves showed that the effect ...