Results 11 to 20 of about 174,002 (295)

Identification of the permeability field for three-dimensional reservoir using the results of geophysical well survey

open access: yesGeoresursy
A model problem of the permeability field identification for a three-dimensional reservoir opened by a large number of wells in the conditions of stationary singlephase fluid filtration is considered.
A. V. Elesin   +2 more
doaj   +2 more sources

Permeability identification of textile structures by inverse methods

open access: yes, 2006
The simulation of a resin flow through a porous medium by FE-models has become a very important aspect for the design of a high-performance RTM produced composite part. The key parameters to perform RTM flow simulations are the permeability values of the fibre reinforcement.
Morren, G.   +4 more
openaire   +4 more sources

SIMULTANEOUS IDENTIFICATION OF PREFORM PERMEABILITY AND COMPRESSIBILITY

open access: yes, 2011
International audienceWe proposed an experimental device and a numerical scheme to simultaneously identify the saturated permeability and the compressibility of preform in the through-thickness direction.
T. Ouahbi   +3 more
core   +4 more sources

Integral forecasting operators and identification of hydrogen permeability models

open access: yes
The book describes methods for solving problems of predicting the phase state of nonlinear dynamic systems, evaluating functionals based on solutions of systems with a delay, and parametric identification of undefined models of hydrogen permeability of structural materials with nonlinear dynamic boundary conditions.
Yury Zaika (18180561)
openaire   +2 more sources

Assessment of Permeability in Barrier Type of Endothelium in Brain Using Tracers: Evans Blue, Sodium Fluorescein, and Horseradish Peroxidase

open access: yes, 2021
Blood-brain barrier (BBB) constituted primarily by the capillary endothelial cells functions to maintain a constant environment for the brain, by preventing or slowing down the passage of a variety of blood-borne substances, such as serum proteins ...
Ahishali, Bulent, Kaya, Mehmet
core   +1 more source

Identification of Thioredoxin-2 as a Regulator of the Mitochondrial Permeability Transition [PDF]

open access: yesToxicological Sciences, 2008
Thioredoxin-2 (Trx2) is a multifunctional, mitochondria-specific protein, which inhibits cell death. The mitochondrial permeability transition (MPT) is a distinct mechanism for cell death activated by oxidants and linked to both necrotic and apoptotic morphologies.
Min, He   +6 more
openaire   +2 more sources

A Direct Method for the Identification of the Permeability Field of an Anisotropic Porous Medium [PDF]

open access: yesProceedings of SPE Annual Technical Conference and Exhibition, 2000
In a recent publication [Zhan and Yortsos, 2000] we proposed a direct method for the inversion of the permeability field of an isotropic porous medium based on the analysis of the displacement of a passive tracer. By monitoring the displacement front at successive time intervals (e.g., using a tomographic method), the permeability can be directly ...
Lang Zhan, Yanis C. Yortsos
openaire   +1 more source

The research on the classification method of high water-cut well group in Y block [PDF]

open access: yesE3S Web of Conferences, 2020
Y block has entered the ultra-high water cut stage of production, and the water cut of oil wells is generally higher than 90%. Before polymer flooding, water cut continues to rise.
Xiaoyuan Yu
doaj   +1 more source

Ceramic matrices applied to aerostatic porous journal bearings: material characterization and bearing modeling Matrizes cerâmicas com aplicação em mancais aerostáticos cerâmicos porosos: caracterização do material e modelagem do mancal

open access: yesCerâmica, 2010
This paper presents the development of an advanced ceramic material for manufacturing aerostatic porous bearing. The results show that there is homogeneous distribution of the pores in the alumina matrix by using different concentrations of the added ...
Z. C Silveira   +3 more
doaj   +1 more source

Definition of the reservoir permeability field according to pressure measurements on wells with the use of spline function

open access: yesGeoresursy, 2018
The problem of reservoir permeability identification based on known well pressures under conditions of single-phase fluid filtration is considered in the article.
A.V. Elesin   +2 more
doaj   +1 more source

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