A rigorous expression is derived that relates exactly the static fluid permeability k for flow through porous media to the electrical formation factor F (inverse of the dimensionless effective conductivity) and an effective length parameter L, i.e., k = L */SF. This length parameter involves a certain average of the eigenvalues of the Stokes operator and reflects information about electrical an...

Electron spin resonance (ESR) studies were carried out for 14N-labeled deuterated 3-methoxy-carbonyl-2,2,5,5-tetramethyl-pyrrolidine-1-oxyl (MC-PROXYL) and 3-carboxy-2,2,5,5-tetramethyl-1-pyrrolidin-1-oxyl (carboxy-PROXYL) in pure water and various concentrations of liposomal solutions by using 300 MHz ESR spectrometer. The ESR parameters such as the line width, hyperfine coupling constant, rot...

Permeability is an important parameter in the process of coalbed methane exploitation. To improve production efficiency and explore control mechanism gas flow law coal, permeability helium nitrogen same coal sample was tested under different effective stress (the difference between external pore pressure mass) by using seepage device. Based on theory, interaction stress, adsorption effect Klink...

Permeability is an important parameter connected with oil reservoir. In the last two decades, artificial intelligence models have been used. The current best prediction model in permeability prediction is extreme learning machine (ELM). It produces fairly good results but a clear explanation of the model is hard to come by because it is so complex. The aim of this research is to propose a way o...

Knowing the overall solute flux and the partial fluxes expressed by every single transport layer, the membrane internal interface concentrations can separately be expressed. Both the overall transport coefcient and the driving force strongly depend, among others, on the value of the structural parameter and the water permeability. Study of the interface concentrations as ...

Magnetization dynamics measurements at subnanosecond time scale have been performed on Fe–Co–N high-saturation soft magnetic films with Permalloy nanolayer seeds and having a saturation magnetization of 1.9 MA/m (1900 emu/cm). The damping parameter varies from 0.011 to 0.018, depending on applied bias field. The peak frequencies of the imaginary permeability spectra and the zero-crossing freque...

This study focuses on the geological model of sandstone formations and petrophysical characterization hydrocarbon reservoirs in Termit Basin. The specific objectives are: (1) to establish a visualizing geometry reservoir rocks (2) visualize spatial vertical distribution parameters (porosity, permeability). methodological approach integrated interpretation lithology data petrographic from logs b...

Hydrogen is a clean fuel which has the potential to drastically decarbonize energy supply chain. However, hydrogen storage currently key challenge; one solution this problem geo-storage, with very large quantities of H2 can be stored economically. Possible target formations are deep coal seams, and permeability parameter determines how fast injected withdrawn again. it well known that gas injec...

The water-gas relative permeability is an important parameter to characterize multiphase flow in sediments. To study the of hydrate-bearing porous media, simulations were carried out at pore scale using lattice Boltzmann method. effects hydrate saturation and hydrate-growth habits on permeability, which scaled by considering only, evaluated a two-dimensional medium. Results show that increase c...

A comparison was made of the phosphate content of the tight-junction-specific protein ZO-1 in two strains of Madin-Darby canine kidney cells which differ in transepithelial resistance, a parameter reflective of tight-junctional permeability. Analysis revealed that the ZO-1 from the low-resistance strain contained approximately twice as much phosphate as that from the high-resistance strain.