Results 1 to 10 of about 124,646 (158)

Determination of the Apparent Gas Permeability in a Macrocracked Concrete

Engineering, 2022
This paper reports on analysis of an experimental study that aimed to determine the apparent gas permeability in cracked concrete. There is a lack of research on this topic in the international literature, due to the difficulty of performing reliable ...
Pierre Rossi
doaj   +2 more sources

Apparent permeability of ordered magnetically soft nanowire arrays

AIP Advances, 2022
Using the equivalent 2D model for finite element method (FEM) we calculated apparent permeability µa and demagnetization factor D for permalloy nanowire and microwire arrays.
Pavel Ripka, Diana Hrakova, Mehran Mirzaei, Ondrej Kaman   +3 more
doaj   +3 more sources

An improved apparent permeability model considering full pore pressure range, variable intrinsic permeability and slippage coefficient

International Journal of Mining Science and Technology, 2022
Although the slippage effect has been extensively studied, most of the previous studies focused on the impact of the slippage effect on apparent permeability within a low pore pressure range, resulting in the inability of matching the evolution of ...
Zhiyong Xiao, Changsheng Wang, Yujing Jiang   +2 more
exaly   +3 more sources

In Vitro BBB triculture assay and preliminary computational model development to predict brain exposure [PDF]

Frontiers in Toxicology
IntroductionNeurotoxicity is a critical liability for many environmental pollutants. Current in vitro neurotoxicity screens rely on direct exposure of cultured neurons to xenobiotics, often at exceeding physiologically relevant levels due to the ...
Zhuangyan Monica Xu, James P. Sluka, Charlie C. Zhang, Gregory Knipp   +3 more
doaj   +2 more sources

Multiscale Apparent Permeability Model of Shale Nanopores Based on Fractal Theory

Energies, 2019
Based on fractal geometry theory, the Hagen−Poiseuille law, and the Langmuir adsorption law, this paper established a mathematical model of gas flow in nano-pores of shale, and deduced a new shale apparent permeability model.
Chaoneng Zhao, Jinzhou Zhao, Qiang Wang   +2 more
exaly   +3 more sources

A new model for calculating the apparent permeability of shale gas in the real state

Natural Gas Industry B, 2018
In all the existing apparent permeability calculation models used for shale gas, the effect of surface diffusion of adsorbed gas is neglected and shale gas is assumed to be in an ideal state, so the calculation results may not reflect the real situations.
Xiaofei Sun
exaly   +3 more sources

Modulation of Caffeine Permeation Kinetics in a Skin-PAMPA Model by Probiotic Lysates and Bile Acids [PDF]

Pharmaceutics
Background: Caffeine, although widely used in dermatological and cosmetic products, exhibits limited permeability through the stratum corneum, highlighting the need for strategies for optimizing delivery.
Maja Đanić, Natalija Dedić, Dragana Zaklan, Slavica Lazarević, Bojan Stanimirov, Momir Mikov, Nebojša Pavlović   +6 more
doaj   +2 more sources

Correlations of tumour permeability parameters with apparent diffusion coefficient in nasopharyngeal carcinoma

Physics and Imaging in Radiation Oncology, 2022
Background and Purpose: Functional imaging has an established role in therapeutic monitoring of cancer treatments. This study evaluated the correlations of tumour permeability parameters derived from dynamic contrast-enhanced magnetic resonance imaging ...
Alan W.L. Mui, Anne W.M. Lee, W.T. Ng, Victor H.F. Lee, Varut Vardhanabhuti, Shei S.Y. Man, Daniel T.T. Chua, X.Y. Guan   +7 more
doaj   +3 more sources

Apparent Liquid Permeability in Mixed-Wet Shale Permeable Media [PDF]

Transport in Porous Media, 2020
AbstractApparent liquid permeability (ALP) in ultra-confined permeable media is primarily governed by the pore confinement and fluid–rock interactions. A new ALP model is required to predict the interactive effect of the above two on the flow in mixed-wet, heterogeneous nanoporous media.
Dian Fan, Amin Ettehadtavakkol, Wendong Wang   +2 more
openaire   +3 more sources

Study on estimation method of methane permeability in coal

矿业科学学报, 2022
The gas flow path in coal body is mainly composed of slits and pores, which is a typical dual gas flow path structure. Generally, in order to quantify the apparent permeability of gas transport in different scale flow paths, mathematical models of ...
Li Wenrui, Zhao Yaoyao, Wang Dengke, Liu Peng   +3 more
doaj   +1 more source