Resistivity
Mostrando 1-12 de 248 artigos, teses e dissertações.
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1. Correlation between the range of motion of the tibiotarsal joint and blood circulation in the lower limbs in diabetic individuals
SUMMARY OBJECTIVE: The aim of this study was to evaluate the relationship between the range of motion and lower-limb hemodynamic indices in the tibiotarsal joint of individuals with diabetic neuropathy. METHODS: Twenty volunteers of both sexes, with a mean age of 61.45±7.05 years, were diagnosed with type 2 diabetes mellitus and diabetic peripheral neurop
Revista da Associação Médica Brasileira. Publicado em: 2022
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2. Ferrimagnetic to paramagnetic transition and dielectric relaxation in Ni1-xZnxFe2O4 ferrites
Abstract The spinel ferrite system Ni1-xZnxFe2O4 (x=0-0.7, Δx=0.1) was prepared by wet chemical co-precipitation method using sulfates of respective metal ions. The electrical resistivity and dielectric properties of the prepared samples have been studied as a function of temperature, frequency, and Zn content (x). The DC resistivity (ϱ) was measured in th
Cerâmica. Publicado em: 2021-06
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3. Geophysical and structural survey in copper occurrence located in the northern region of the Camaquã basin (RS)
Abstract The geophysical diagnosis of mineral deposits can be extremely useful in detailing mineralized zones and is a strategy for direct sampling by probing holes for content analysis. This study involves the combined use of Electrical geophysical methods (DC resistivity and Induced Polarization), geological recognition and structural field analysis, with
REM, Int. Eng. J.. Publicado em: 2021-06
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4. Characterization of Sobradinho landslide in fluvial valley using MASW and ERT methods
Abstract Landslides can substantially impact the fluvial systems, which is why the continuous mapping of their extent, evolution and stability assessment is crucial. However, in such environments, material identification (e.g. colluvium) and subsurface characterization by the methods used for geologic mapping and geotechnical investigation is often a challen
REM, Int. Eng. J.. Publicado em: 2020-12
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5. Detection of seepage paths in small earth dams using the self-potential method (SP)
Abstract The application of geoelectric methods, such as induced polarization (IP), the electrical resistivity and the self-potential (SP), presents an important indirect study methodology in several areas of geology, such as mining, geotechnics and environmental geology. The present study deals with the results of the application of the self-potential metho
REM, Int. Eng. J.. Publicado em: 2020-09
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6. Constraints from magnetotellurics on the geological structure across a seismic area associated with water wells in the Paraná basin, Brazil
ABSTRACT: The occurrence of earthquakes associated with the opening of groundwater wells is a very rare phenomenon. We present the results from a magnetotelluric profile of about 4 km-long that crosses a seismic zone near the town of Bebedouro, in the Northeastern part of the intra-cratonic Paraná basin, in Brazil. The seismic activity is thought to be caus
Braz. J. Geol.. Publicado em: 13/01/2020
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7. VASCULAR FUNCTION AND NITRITE LEVELS IN ELDERLY WOMEN BEFORE AND AFTER HYDROGYMNASTICS EXERCISES
RESUMO A prática regular de exercício físico pode reduzir o estresse oxidativo e os fatores de risco para doenças cardiovasculares. O objetivo deste estudo foi avaliar nível de nitrito sanguíneo, alterações na resistividade de artérias cerebrais e no colesterol de idosas submetidas a treinamento de hidroginástica. Quarenta mulheres formaram a amost
J. Phys. Educ.. Publicado em: 20/12/2019
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8. Differences in soil electrical resistivity tomography due to soil water contents in an integrated agricultural system
Resumo: O objetivo deste trabalho foi caracterizar a variabilidade espacial da resistividade elétrica do solo devido a diferentes umidades do solo, em sistema agropecuário integrado. A resistividade elétrica (RE) do solo foi medida com o sensor de contato “Automatic Resistivity Profiling” (ARP) em duas datas, em 2016, em área de 9,7 ha com diferentes
Pesq. agropec. bras.. Publicado em: 28/11/2019
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9. Investigation on Electrical Properties and Microdefects of Nb5+-Doped BaTiO3 Based Ceramics by Positron Annihilation Techniques
The influence of the Nb5+-doped content and the doping CaCO3 on the electrical properties and the microdefects of BSTN ceramics by Positron Annihilation Techniques were studied, which were fired at 1350 ºC for 2 hours in air. The PTCR characteristics in the BSTN samples were also investigated. Moreover, the information on microdefects in BSTN ceramics was d
Mat. Res.. Publicado em: 23/09/2019
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10. Use of Firewood Ash Waste in Electrical Siliceous Porcelain
The use of firewood ash waste for the production of electric porcelain can represent an important technological and environmental alternative for the final disposal of this abundant solid waste material. This work aims to study the effect of replacing of sodium feldspar (albite) for firewood ash waste in electrical siliceous porcelain formulation. The firewo
Mat. Res.. Publicado em: 05/08/2019
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11. Use of hydrogeophysical data to determine the role of faults in the geometry of the Barreiras Aquifer, Brazil
Abstract Characterizing the geometry of an aquifer is fundamental for determining the locations of more productive wells. Commonly, flow and hydraulic parameters, such as transmissivity, are related to the thickness of the aquifer, which emphasizes the importance of regional hydrogeophysical characterization. Shuttle radar imagery, well profiles and geoelect
Braz. J. Geol.. Publicado em: 27/06/2019
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12. Y3+ substituted Sr-hexaferrites: sol-gel synthesis, structural, magnetic and electrical characterization
Resumo Hexaferritas de estrôncio com adição de Y3+ com composição química SrYxFe12-xO19 (x= 0,0, 0,5, 1,0, 1,5) foram sintetizadas com sucesso pelo método sol-gel com autocombustão. Os estudos estruturais e morfológicos das amostras preparadas foram investigados usando a técnica de difração de raios X, espectroscopia de energia dispersiva, micros
Cerâmica. Publicado em: 06/06/2019