Results 251 to 260 of about 4,739,253 (306)

Transient Flow model and heterogeneity effect analysis for fracture networks in shale gas horizontal wells. [PDF]

Sci Rep
Xiong W, Li Y, Guo W, Yuan H, Tang Z.
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Assessing reservoir heterogeneity using the turbulence factor as an effective tool for hydraulic flow unit classification for BM-85 Well, Gulf of Suez, Egypt. [PDF]

Sci Rep
Al-Alfy IM, El-Sawy MZ, Salama NS, Elnaggar OM.   +3 more
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Complex Permeability Measurements of Microwave Ferrites1

MRS Proceedings, 1996
AbstractA rigorous and accurate method for the experimental determination of the complex permeability of demagnetized ferrites at microwave frequencies is presented. The measurement uses low- loss dielectric ring resonators, is nondestructive, and allows complex permeability characterization of a single ferrite sample to be performed at frequencies ...
Richard G. Geyer, Jerzy Krupka
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Parametric modelling of complex permittivity and permeability

1996 IEEE MTT-S International Microwave Symposium Digest, 2002
This paper proposes a new method for measuring the complex permittivity and permeability of materials at microwave frequencies. Starting from reflection/transmission measurements, a parametric model of /spl epsi/ and /spl mu/ is determined using a maximum likelihood estimator.
Van Den Broeck, Tom, Dhondt, Geert, Barel, Alain, Martens, Luc   +3 more
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Measurement of complex permittivity and complex permeability of materials

12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195), 2002
The time domain measurement of complex permittivity and complex permeability in the 8 to 18 GHz frequency band is considered. Some methods for determination of permittivity and permeability are presented.
H. Alenkowicz, B. Levitas
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Permeability of complex porous media

Colloid Journal, 2009
Hydrodynamic permeability of membrane composed of a set of porous spherical particles with rigid impenetrable cores is calculated. The cell method proposed by Happel and Brenner is used in calculations. All known boundary conditions on the cell surface, such as the Happel, Kuwabara, Kvashnin, and Cunningham (Mehta-Morse) models, are considered.
S. I. Vasin, A. N. Filippov
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Modelling of complex permeability in cores

Le Journal de Physique IV, 1998
In the numerical field analysis a problem that still remains is the development of magnetic parameter models that accurately represents the effect of magnetic anisotropy under complex magnetic conditions. Two modified approaches have been used for the calculation of complex permeability in oriented FeSi lamination. In the first approach pure relaxation
J. Sláma, P. Krivošik, V. Jancárik, E. Ušák   +3 more
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The permeability transition pore complex: another view

Biochimie, 2002
Mitochondria play a critical role in initiating both apoptotic and necrotic cell death. A major player in this process is the mitochondrial permeability transition pore (MPTP), a non-specific pore, permeant to any molecule of < 1.5 kDa, that opens in the inner mitochondrial membrane under conditions of elevated matrix [Ca(2+)], especially when this is ...
Halestrap, AP, Mcstay, GP, Clarke, SJ
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Predicting skin permeability from complex vehicles

Advanced Drug Delivery Reviews, 2013
It is now widely accepted that vehicle and formulation components influence the rate and extent of passive chemical absorption through skin. Significant progress, over the last decades, has been made in predicting dermal absorption from a single vehicle; however the effect of a complex, realistic mixture has not received its due attention.
Daniela, Karadzovska, James D, Brooks, Nancy A, Monteiro-Riviere, Jim E, Riviere   +3 more
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