Results 1 to 10 of about 1,809,178 (303)
Permeability of porous materials determined from the Euler characteristic [PDF]
Phys. Rev. Lett. 109, 264504 (2012), 2012 We study the permeability of quasi two-dimensional porous structures of randomly placed overlapping monodisperse circular and elliptical grains. Measurements in microfluidic devices and lattice Boltzmann simulations demonstrate that the permeability is determined by the Euler characteristic of the conducting phase.
Bechinger, Clemens +6 more
arxiv +5 more sources
Determination of effective permittivity and permeability of metamaterials from reflection and transmission coefficients [PDF]
, 2001 We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lengths of electromagnetic metamaterials, to determine the effective permittivity ~«! and permeability ~m!
David R. Smith +3 more
semanticscholar +3 more sources
Numerical upscaling of the permeability of a randomly cracked porous medium [PDF]
arXiv, 2008 The equivalent permeability of a randomly cracked porous material is studied using a finite element program in which a four-nodes zero-thickness element is implemented for modelling the cracks. The numerical simulations are performed for geometries with different cracks densities and for different values of matrix permeability and cracks conductivity ...
Ghabezloo, Siavash, Pouya, Ahmad
arxiv +5 more sources
CONDUCTIVITY AND PERMEABILITY [PDF]
Journal of General Physiology, 1921 An electrical current passing through a living plant flows partly through the cell wall and partly through the protoplasm. The relative amounts of these two portions of the current can be calculated. The outcome of such calculations shows that the conclusions drawn from the study of the resistance of the tissue as a whole apply also to ...
W. J. V. Osterhout
openalex +4 more sources
Evaluation of temperature resistance of gelatinized modified starch drilling fluid [PDF]
E3S Web of Conferences, 2022 This chapter evaluates and compares the indoor performance of different concentrations of non gelatinized starch and gelatinized starch in drilling fluid, gelatinized modified starch at 80°C, and then aged at high temperature.
Liu Wei, Zhu Mingming, Fan Fan
doaj +1 more source
Synthesis of organic boron crosslinker for polyvinyl alcohol gel [PDF]
E3S Web of Conferences, 2022 In this article, borax was used as the prime agent, and the organic boron that cross-linked agent was synthesized using adding sodium tartrate. The synthesis response shapes were optimized using unmarried factor way.
Zhang Zhenhuo +2 more
doaj +1 more source
Comparison of mechanical characteristics of different types of shales in the Ordos Basin
Frontiers in Earth Science, 2023 Shale gas is a very important unconventional energy. The mechanical properties of the three types of shale (laminated shale, sandwich shale and foliated shale) are different, and the difference in fracturing effectiveness is very significant.
Liangbin Dou +14 more
doaj +1 more source
Mitochondrial Permeability Transition
Cells, 2022 The mitochondrial permeability transition (PT) is a phenomenon that can be broadly defined as an increase in the permeability of the mitochondrial inner membrane [...].
P. Bernardi, Evgeny Pavlov
semanticscholar +1 more source
Geofluids, 2022 Given the problems of multiple natural microfractures developed in Chang 6 reservoir of Huaqing oilfield in Ordos Basin, the injected water flows along with the natural fractures during water injection development, resulting in low water drive recovery ...
Shengping He +6 more
doaj +1 more source
You-qi chuyun, 2021 For the operation mode of the production, gathering and transmission pipelines is diversified in the Changqing Gas Field, and the flow state and corrosion environment vary greatly, there is a large error between the actual detection and the detection ...
Fanghui ZHU +6 more
doaj +1 more source