Results 21 to 30 of about 751,293 (281)

Q-based design equations for resonant metamaterials and experimental validation [PDF]

open access: yes, 2007
Practical design parameters of resonant metamaterials, such as loss tangent, are derived in terms of the quality factor $Q$ of the resonant effective medium permeability or permittivity.
Cummer, Steven A.   +2 more
core   +2 more sources

Screening effects in flow through rough channels [PDF]

open access: yes, 2006
A surprising similarity is found between the distribution of hydrodynamic stress on the wall of an irregular channel and the distribution of flux from a purely Laplacian field on the same geometry.
A. D. Araújo   +6 more
core   +1 more source

In silico simulation of reversible and irreversible swelling of mitochondria: The role of membrane rigidity [PDF]

open access: yes, 2020
Mitochondria have been widely accepted as the main source of ATP in the cell. The inner mitochondrial membrane (IMM) is important for the maintenance of ATP production and other functions of mitochondria.
Arieli   +48 more
core   +1 more source

RF measurement of wire complex permeability

open access: yesElectronics Letters, 2003
The complex permeability of thin round wires is measured with a coaxial system at half-wavelength resonance, using surface impedance and low-loss transmission line concepts. A steel wire is measured over the band 300 MHz–3 GHz. The results compare well to measurements made early in the last century.
Stuart T.E.W., Reader H.C., Cloete J.H.
openaire   +2 more sources

AC-Winding-Resistance Calculation of Toroidal Inductors with Solid-Round-Wire and Litz-Wire Winding Based on Complex Permeability Modeling

open access: yesMachines
This paper has investigated a method for calculating the frequency-dependent winding resistance of toroidal inductor windings with Litz-wire as well as solid-round wire.
Dae-Yong Um   +2 more
doaj   +1 more source

Temperature dependence of spin resonance in cobalt substituted NiZnCu ferrites

open access: yes, 2010
Cobalt substitutions were investigated in Ni0.4Zn0.4Cu0.2Fe2O4 ferrites, initial complex permeability was then measured from 1 MHz to 1 GHz. It appears that cobalt substitution led to a decrease in the permeability and an increase in the \mus\timesfr ...
Labouré, Eric   +3 more
core   +5 more sources

Insights on the spatial configuration of collective spaces within forming dynamics: the relation between infrastructure and urban transformation in Plaça de les Glòries Catalanes [PDF]

open access: yes, 2016
The research seeks to produce insights on the spatial configuration of collective spaces where large scale infrastructure propels urban transformation.
Chiappini, María Cecilia   +2 more
core   +1 more source

Simulation Study of the Small-Signal Characteristics of Single-Phase Common-Mode Inductors with Capacitance Cancellation

open access: yesApplied Sciences
This article proposes a simulation model of single-phase common-mode inductors to evaluate the small-signal characteristic of common-mode inductors when the stray capacitance cancellation method is applied.
Shotaro Takahashi
doaj   +1 more source

Permeability evolution during progressive development of deformation bands in porous sandstones [PDF]

open access: yes, 2003
[1] Triaxial deformation experiments were carried out on large (0.1 m) diameter cores of a porous sandstone in order to investigate the evolution of bulk sample permeability as a function of axial strain and effective confining pressure.
Antonellini   +51 more
core   +3 more sources

Dependence of microwave absorption properties on ferrite volume fraction in MnZn ferrite/rubber radar absorbing materials

open access: yes, 2011
We report the analysis of measurements of the complex magnetic permeability ($\mu_r$) and dielectric permittivity ($\epsilon_r$) spectra of a rubber radar absorbing material (RAM) with various MnZn ferrite volume fractions.
Dantas, Christine C.   +2 more
core   +1 more source

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