Results 1 to 10 of about 751,293 (281)

Equivalent circuit of an inductor on a nanocrystalline core with a high magnetic permeability

open access: yesФизика волновых процессов и радиотехнические системы, 2022
Based on the measured impedance of the inductors based on a toroidal core wound from a thin (18 m) nanocrystalline tape, with a different number of winding turns, an equivalent high frequency (0 Hz - 500 MHz) circuit model was built.
Vladimir F. Dmitrikov   +2 more
doaj   +1 more source

Research on Coil Impedance of Self-Inductive Displacement Sensor Considering Core Eddy Current

open access: yesSensors, 2021
The inductive displacement sensor is widely used in active magnetic bearing (AMB) systems to detect rotor displacement in real time, and the performance of the sensor directly affects the performance of AMB.
Zongqiang Ren, Hongwei Li, Wentao Yu
doaj   +1 more source

PERMEABLE JUNCTIONAL COMPLEXES [PDF]

open access: yesThe Journal of Cell Biology, 1972
Ionic lanthanum has been used to study transepithelial ion permeation in in vitro rabbit gallbladder and intestine (ileum) by adding 1 mM La3+ to only the mucosal bathing solution. Transepithelial fluid transport electrical potential differences (p.d.), and resistances were measured. During La3+ treatment the gallbladder's rate of active solute-coupled
Terry E. Machen   +2 more
openaire   +1 more source

Equivalent circuit of a ferrite-wound inductor in a wide frequency range (0 Hz – 500 MHz)

open access: yesФизика волновых процессов и радиотехнические системы, 2022
Based on the measured impedance of the inductors wound on various ferrite cores and with a different number of turns, an equivalent high frequency (0 Hz – 500 MHz) circuit model was built.
Vladimir F. Dmitrikov   +1 more
doaj   +1 more source

Enhanced Microwave Absorption of CNT Composites Mixing with Fe3O4 and Carbonyl Iron [PDF]

open access: yesArchives of Metallurgy and Materials, 2018
We fabricated two different kinds of composite materials for absorbing microwave in a frequency range of 2 to 18 GHz using coaxial airline and thru-reflect-line (TRL) method. The composite materials having carbon nanotube (CNT) with carbonyl iron (CI) or
Jung Hyo Park   +5 more
doaj   +1 more source

Scaling Law of Permeability and Porosity for Fluid Transport ‎Phenomena in Porous PCM Media [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2021
The present paper reports the numerical results of fluid flow in porous phase change materials (PCM) media. This is an important topic in potential scientific, technological and engineering field’s especially latent heat storage.
Yassine Hariti   +3 more
doaj   +1 more source

Optimization of Ni0.95−xZnxCo0.05Fe1.90Mn0.02O4 ceramics with promising magneto-dielectric properties for VHF antenna miniaturization [PDF]

open access: yesJournal of Advanced Dielectrics, 2018
Magnetic, dielectric and DC conductive properties of Ni0.95−xZnxCo0.05Fe1.90Mn0.02O4 (with x=0-0.20 at an interval of 0.05) ferrite ceramics were studied, in order to develop magneto-dielectric materials with almost equal values of relative permeability ...
Zhuohao Xiao   +4 more
doaj   +1 more source

Experimental study of the permeability evolution of fractured mudstone under complex stress paths

open access: yes工程科学学报, 2021
The main reservoirs of oil and gas are in the pores and fractures of rocks. Under deep and complex stress environments, reservoir rock fracture permeability evolution directly affects the flow of oil and gas, which is an important research object of oil ...
Yu ZHANG   +4 more
doaj   +1 more source

Synthesis, Characterization and Electromagnetic Properties of SnO-coated FeNi Alloy Nanocapsules [PDF]

open access: yesMaterials Research, 2016
SnO-coated FeNi alloy nanocapsules have been synthesized by an arc-discharge method. High-resolution transmission electron microscopy and x-ray photoelectron spectroscopy analysis show that the nanocapsules have a shell/core structure with FeNi alloy ...
Mingling Li   +3 more
doaj   +1 more source

Dynamic fluid transport property of hydraulic fractures and its evaluation using acoustic logging

open access: yesPetroleum Exploration and Development, 2022
The existing acoustic logging methods for evaluating the hydraulic fracturing effectiveness usually use the fracture density to evaluate the fracture volume, and the results often cannot accurately reflect the actual productivity.
Huanran LI   +3 more
doaj   +1 more source

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