Results 11 to 20 of about 4,739,253 (306)

A Complex Network Model for Analysis of Fractured Rock Permeability

open access: yesAdvances in Civil Engineering, 2020
Fractured rocks exist widely in nature. The fracture network is an effective storage space and main seepage channel of low-permeability oil and gas reservoirs, which controls the seepage system of low-permeability oil and gas reservoirs.
Xinmin Zhu   +4 more
doaj   +2 more sources

Structural heterogeneity and permeability in faulted eolian sandstone: Implications for subsurface modeling of faults [PDF]

open access: yes, 2002
We determined the structure and permeability variations of a 4 km-long normal fault by integrating surface mapping with data from five boreholes drilled through the fault (borehole to tens of meters scale).
Forster, C.B.   +4 more
core   +3 more sources

Structural permeability of complex networks to control signals [PDF]

open access: yesNature Communications, 2015
AbstractMany biological, social and technological systems can be described as complex networks. The goal of affecting their behaviour has motivated recent work focusing on the relationship between the network structure and its propensity to be controlled.
Lo Iudice, Francesco   +2 more
openaire   +3 more sources

The selective permeability barrier in the nuclear pore complex [PDF]

open access: yesNucleus, 2016
The nuclear pore complex (NPC) mediates the shuttle transport of macromolecules between the nucleus and cytoplasm in eukaryotic cells. The permeability barrier formed by intrinsically disordered phenylalanine-glycine-rich nucleoporins (FG-Nups) in the NPC functions as the critical selective control for nucleocytoplasmic transport.
Christina, Li   +2 more
openaire   +2 more sources

FFT‐based bounds on the permeability of complex microstructures [PDF]

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, 2014
SUMMARYA numerical scheme for the computation of the permeability of complex microstructures is presented. As a darcean counterpart of the FFT‐based scheme in elasticity, the method is designed to be directly coupled with 3D imaging techniques of porous samples, without meshing or definition of an equivalent pore network.
Bignonnet, François, Dormieux, Luc
openaire   +2 more sources

Increased susceptibility of striatal mitochondria to calcium-induced permeability transition [PDF]

open access: yes, 2003
Mitochondria were simultaneously isolated from striatum and cortex of adult rats and compared in functional assays for their sensitivity to calcium activation of the permeability transition.
Brustovetsky, T   +11 more
core   +1 more source

Study on the Influence of Geometric Characteristics of Grain Membranes on Permeability Properties in Porous Sandstone

open access: yesMembranes, 2021
Studying the influence of grain characteristics on fluid flow in complex porous rock is one of the most important premises to reveal the permeability mechanism.
Run Shi   +4 more
doaj   +1 more source

Loading rate dependence of permeability evolution in porous aeolian sandstones [PDF]

open access: yes, 2004
Mechanical properties of rocks are characterized by their notable dependence on the applied deformation rate. However, little is known about the strain rate dependence of fluid flow properties since most laboratory tests are conducted using a single ...
Ira O. Ojala   +8 more
core   +1 more source

Seepage test by HCA for remolded kaolin [PDF]

open access: yesE3S Web of Conferences, 2019
Permeability is an import character of soil, especially in excavation and tunnelling. Hollow cylindrical apparatus (HCA) is often used to determine soil anisotropy, particularly soil strength and stiffness under different directions of major principal ...
Zhou Jian   +4 more
doaj   +1 more source

Dietary calcium decreases but short-chain fructo-oligosaccharides increase colonic permeability in rats [PDF]

open access: yes, 2010
An increased intestinal permeability is associated with several diseases. Nutrition can influence gut permeability. Previously, we showed that dietary Ca decreases whereas dietary short-chain fructo-oligosaccharides (scFOS) increase intestinal ...
Schepens, M.A.A.   +28 more
core   +1 more source

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