Search Results - "pores"

The article presents the results of the research of morphology and porous structure of medical clays. The specific surface area, volume of pores and the average size of pores were identified.

It is shown that, in crystalline and amorphous solids, the closed pore always contains gas, the pressure of which should be taken into account when calculating the rate that the pore size varies. Sets of differential equations describing the kinetics of varying the pore size and gas pressure in pore...

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The aim of the investigation is to develop multifunctional adsorbent, which is able to remove both inorganic ions and molecular organic substances from aqueous solutions. Oxidized graphene has been obtained by Hammer’s method. The composite, which includes hydrated zirconium dioxide and graphene ox...

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The investigations were conducted on the gray forest heavy clay loamy soils, formed on the loess-like loams, which are widely spread on the territory of Vladimir Opolye. The eluvial-illuvial profile differentiation, its different intensity and the specificity of illuvial coatings (fine dispersed cla...

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The main aim of this paper is to derive the basic governing equations for an anisotropic thermoelastic medium with mass diffusion and triple porosity. Additionally, the fundamental solutions of a system of equations for steady, pseudo-, quasi-static oscillations and equilibrium are also constructed...

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Objective: to obtain an image of pores in the membrane of an erythrocyte after its electroporation, by using an atomic power microscope (APM), to evaluate the parameters of the obtained pores, and to discuss the prospects for using an APM in reanimatology. Human whole venous blood was exposed to a p...

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This study employs the advanced X-ray microtomography technique to evaluate the open and closed porosity geometry within fine aggregate matrix specimens extracted from different locations of SGC samples compacted with distinct densities. The adoption of advanced techniques such as the X-ray microtom...

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For qualitative and quantitative description of adsorption equilibrium and hysteresis in open slit-like micropores, theoretically rigorous equations are proposed based on the theory of volume filling of micropores which imply the physical and formal analogy between the volume filling of micropores a...

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Nucleic acid replication is a central process at the origin of life. On early Earth, replication is challenged by the dilution of molecular building blocks and the difficulty of separating daughter from parent strands, a necessity for exponential replication. While thermal gradient systems have been...

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The article presents the results of hydrocarbon compounds extracted from open pores and blocked by resinous-asphaltene compounds pores in the Tutleim formation rocks (a stratigraphic analogue of the Bazhenov formation) and the underlying Jurassic deposits on the territory of the Kamennaya crest of t...

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The synthesis and characterization of heterostructure por-Ga2O3/GaAs represent a crucial advancement in nanomaterials, particularly in optoelectronic applications. Employing a two-stage electrochemical etching methodology, this research has elucidated the precise conditions required to fabricate su...

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Organic matter pores constitute a significant storage space in shale gas reservoirs, contributing to approximately 50% of the total porosity. This study employed a comprehensive approach, utilizing scanning electron microscopy, low-pressure N₂ adsorption, thermal analysis, ima...

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There are usually used inorganic substances for the strengthening of self-healing ability of concrete but some specific types of bacteria or fungi may also be considered for use. The bacteria’s ability to fill pores and micro-cracks was investigated on cylindrical concrete specimens with the diamete...

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Objectives. To obtain highly dispersed powders of chromium(III) molybdate Cr2(MoO4)3 by solid phase synthesis and to study their porous structure.Methods. After stirring in water, a mixture of Cr2O3 and MoO3 oxide powders was dried in air and subjected to heat treatment in the temperature range of 6...

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The lithofacies and pore structural characteristics of shale reservoirs directly affect the exploration and development of shale gas. To clarify the exploration and development potential of the Lower Cambrian Shuijingtuo Formation (SJT) shale in the Middle Yangtze region, China, this study employs i...

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Several materials widely used in scientific research and industrial applications, including nano-filters and neuromorphic circuits, consist of fiber structures. Despite the fundamental structural similarity, the key feature that should be considered depends on the specific application. In the case o...

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In China, coal gangue is a large industrial solid waste with considerable reserves. However, its application prospects in the field of concrete materials have been limited due to its poor physical properties. Precoating is commonly used to improve the performance of gangue aggregates. To further enh...

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This study demonstrates the utilization of deep learning techniques for binary semantic segmentation of pores in carbon fiber reinforced polymers (CFRP) using X-ray computed tomography (XCT) datasets. The proposed workflow is designed to generate efficient segmentation models with reasonable execut...

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This paper presents results on semantic air segmentation for digital concrete cores. Brightness normalization and noise reduction were used as image preprocessing. To increase the efficiency of segmentation, a method is proposed for segmentation in three directions, followed by summing the resulting...

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IntroductionMicroporous structures of tight sandstones show diverse fractal features in different diagenetic facies.MethodsExperimental tests such as cast thin sections, scanning electron microscopy, high-pressure mercury pressure, and low-temperature nitrogen adsorption were applied to clarify the...

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