Three-dimensional resistor network modeling of the resistivity and permeability of fractured rocks
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DOI: 10.1002/2016jb013854
Abstract: The resistivity and permeability of 3-D fracture networks have been modeled as the fractures within these networks are incrementally opened. In these models, the ratio of the rock resistivity to that of the fluid is… read more here.
Keywords: resistivity; fracture networks; resistivity permeability; permeability ... See more keywords
On the Origin and the Amplitude of T ‐Square Resistivity in Fermi Liquids
Sign Up to like & getrecommendations! Published in 2022 at "Annalen der Physik"
DOI: 10.1002/andp.202100588
Abstract: In 1937, Baber, Landau and Pomeranchuk postulated that collisions between electrons generates a contribution to the electric resistivity of metals with a distinct T temperature dependence. The amplitude of this term is small in common… read more here.
Keywords: amplitude square; square resistivity; resistivity fermi; origin amplitude ... See more keywords
Thermally induced double positive temperature coefficients of electrical resistivity in combined conductive filler–doped polymer composites
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Polymer Science"
DOI: 10.1002/app.44876
Abstract: Polymer composites of low-density polyethylene/polypropylene/ graphite/vanadium dioxide (LDPE0.8/PP0.2/Gr0.4/VO2) are prepared by classical melt-mixing technology and show a notable double positive temperature coefficient of electric resistivity (PTC), which originates from the combined effect of highly conductive… read more here.
Keywords: resistivity; double positive; thermally induced; polymer composites ... See more keywords
Evaluation of resistivity anisotropy parameters in the Eastern Mitidja basin, Algeria, using azimuthal electrical resistivity tomography
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DOI: 10.1002/nsg.12048
Abstract: ABSTRACT We study electrical anisotropy using azimuthal electrical resistivity tomography (A‐ERT) for identifying geological layers and determining the preferential aquifer flow direction. The work presented in this paper aims at calculating the anisotropy coefficient from… read more here.
Keywords: anisotropy; resistivity; resistivity tomography; azimuthal electrical ... See more keywords
Four‐dimensional electrical resistivity tomography for continuous, near‐real‐time monitoring of a landslide affecting transport infrastructure in British Columbia, Canada
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DOI: 10.1002/nsg.12102
Abstract: The Ripley Landslide is a small (0.04 km2), slow-moving landslide in the Thompson River Valley, British Columbia, that is threatening the serviceability of two national railway lines. Slope failures in this area are having negative… read more here.
Keywords: resistivity; time; resistivity tomography; near real ... See more keywords
Quantifying seasonal 3D effects for a permanent electrical resistivity tomography monitoring system along the embankment of an irrigation canal
Sign Up to like & getrecommendations! Published in 2020 at "Near Surface Geophysics"
DOI: 10.1002/nsg.12110
Abstract: ABSTRACT In this paper, we discuss the necessity of quantifying and correcting seasonal 3D effects on 2D electrical resistivity tomography (ERT) data measured along the embankments of rivers or artificial canals. A permanent ERT monitoring… read more here.
Keywords: resistivity; irrigation; system; water ... See more keywords
Electrical resistivity monitoring of river–groundwater interactions in a Chalk river and neighbouring riparian zone
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DOI: 10.1002/nsg.12114
Abstract: In the past several decades, there has been considerable interest in groundwater-surface water interactions and their ability to regulate and cycle nutrients and pollutants. These interactions are spatially and temporally complex; however, electrical resistivity imaging… read more here.
Keywords: resistivity; groundwater; riparian zone; river ... See more keywords
An unconventional method for calculating porosity of marine clay deposits using the 2D resistivity method
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DOI: 10.1002/nsg.12123
Abstract: ABSTRACT Various methods were earlier designed to calculate porosity of a formation, but many of them are reliant on physical soil sampling and/or laboratory measurements. The present work examines a recently proposed method, which we… read more here.
Keywords: resistivity; marine clay; porosity; method ... See more keywords
Morphology, Resistivity, and PTC behavior of EVOH/CB composites prepared by solvent-casting saponification and precipitation saponification
Sign Up to like & getrecommendations! Published in 2017 at "Polymer Composites"
DOI: 10.1002/pc.23714
Abstract: Poly(ethylene-co-vinyl alcohol)/carbon black (EVOH/CB) composites were prepared by a solvent-casting saponification (-D) and precipitation saponification (-P) methods with a poly(ethylene-co-vinyl acetate)/CB (EVA/CB) toluene suspension. The effects of the CB content and saponification time on the… read more here.
Keywords: resistivity; prepared solvent; saponification; solvent casting ... See more keywords
Study of Generation and Underground Flow of Acid Mine Drainage in Waste Rock Pile in an Uranium Mine Using Electrical Resistivity Tomography
Sign Up to like & getrecommendations! Published in 2019 at "Pure and Applied Geophysics"
DOI: 10.1007/s00024-019-02351-9
Abstract: Mineral exploration is often associated with the generation of environmental liabilities, whose potential damages might imperil local water quality. An example of these environmental impacts is the acid mine drainage—AMD, caused by sulfides oxidation and… read more here.
Keywords: resistivity; acid mine; water; waste ... See more keywords
Analyzing the Spatial Occurrence of High-Alumina Clays (Brazil) Using Electrical Resistivity Tomography (ERT)
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DOI: 10.1007/s00024-020-02444-w
Abstract: Mottled and high-alumina clay horizons (Gleysols) above dismantled iron crusts (Ferralsols) are widespread in the soils that developed on the flat sedimentary plateau located in western Minas Gerais State (Brazil). Field exploration shows that the… read more here.
Keywords: resistivity; ert; alumina clays; high alumina ... See more keywords