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The Pore Diffusion Coefficient of Iodide Ion in Rock Samples Using X-ray K-edge Imaging
Published 2023-08-01“…These results validate that this method will be feasible for determining the pore diffusion coefficients and porosities in rock samples. …”
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Evaluating adsorption isotherm models for determining the partitioning of ammonium between soil and soil pore water in environmental soil samples
Published 2024-11-01“…<p>Ammonium in soil pore water is thought to participate in bidirectional exchange with the atmosphere; however, common soil nutrient analysis methods determine the bulk quantity of ammonium associated with the soil particles rather than determining the aqueous ammonium concentration. …”
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Quantitative Analysis of the Influence of Volatile Matter Content in Coal Samples on the Fractal Dimension of Their Nanopore Characteristics
Published 2025-06-01“…Through AFM three-dimensional topographical observations, it was found that coal samples with higher volatile matter exhibited significant gorge-like undulations on their surfaces, with pores predominantly being irregular macropores, whereas low volatile matter coal samples had smoother surfaces with dense and regular pores. …”
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Rhizon sampler alteration of deep ocean sediment interstitial water samples, as indicated by chloride concentration and oxygen and hydrogen isotopes
Published 2014-06-01“…The Rhizon sampler, a nondestructive tool developed for terrestrial sediment interstitial water extraction, has been proposed for efficient and nondestructive sampling of ocean sediment pore waters. However, there exists little documentation on the reliability and performance of Rhizon samplers in deep ocean sediments, particularly in regard to their effect on chloride concentration and oxygen and hydrogen isotopic measurements. …”
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Study on microscopic pore structures and mechanical properties
Published 2025-01-01“…This method clarified the microscopic pore structure and mechanical properties of coal samples and revealed the influence of material composition, pore structure, and thermal evolution level on their microscopic mechanical properties. …”
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Pore Fractal and Structure Analysis of Pore-Filling Chlorite in Continental Shales: A Case Study from the Qingshankou Formation in the Gulong Sag
Published 2025-04-01“…Chlorites of Types I, III, and IV, filled with other substances, display higher fractal dimensions, indicating more complex pore structures. These complex pores are favorable for oil adsorption but hinder oil seepage. …”
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Multifractal Analysis of Temporal Variation in Soil Pore Distribution
Published 2024-12-01“…A 200 m × 200 m test plot with five sampling points was used to collect soil samples at three depth layers (10–30 cm, 30–50 cm, and 50–70 cm) for soil water retention curve and particle size composition analysis, with a total of seven sampling events throughout the growing season. …”
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Characteristics of Pore Volume Distribution and Methane Adsorption on Shales
Published 2015-12-01“…In order to quantify their contribution to the total amount of adsorbed gas, we investigate the pore volume distribution on shale, coal, isolated kerogen, and clay samples using low pressure nitrogen and carbon dioxide adsorption method. …”
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Effects of Cyclic Loading on the Pore Structure of Anthracite Coal
Published 2021-01-01“…Finally, the law and mechanism of action of the loading frequency and amplitude on pores in coal samples were comprehensively analyzed. …”
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Study on spontaneous combustion characteristics of water-soaked air-dried coal samples in high ground temperature condition
Published 2025-07-01“…The results show that the content of −CH3/−CH2−, −CH3−, −CH2−, −C=O−, −COOH, substituted benzene and −C=C− in the water-soaked air-dried coal samples at high temperature is higher than that of the original coal samples. …”
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Combined characterization of pore structurein deep medium-rank coal using mercury intrusion and liquid nitrogen adsorption methods and its pore fractal characteristics
Published 2025-01-01“…To study the pore structure and fractal characteristics of deep medium-rank coal, combined characterization using mercury intrusion and liquid nitrogen adsorption methods was conducted on coal samples from the main coal seams in typical deep mining areas, including Shenyang Hongyang Third Mine, Kailuan Linxi Mine, Huainan Xinji Second Mine, and Pingdingshan Pingmei Sixth Mine. …”
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Study on the Destructive Effect of Small Faults on Coal Pore Structure
Published 2022-01-01“…However, the damage effect of small faults on coal pore structure still lacks systematic research. Taking a small reverse fault under Pingmei No. 2 mine as an example, this paper collects the hanging wall coal samples within 5 m from the fault plane and the coal samples 50 m from the fault plane, where there is no fault development. …”
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Fractal Evolution Characteristics of Pore Structure in Coal-Acidified Stimulation
Published 2025-01-01“…The results were as follows: After acidification, the specific surface area, total pore volume, pore volume in different stages, and average pore size of the coal samples all significantly increased. …”
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Estimating Pore-Size Distributions of Moderately Hydrophobic Mesoporous Solids
Published 2013-03-01“…In addition, the statistical film thickness, t curve, is derived using these data and nitrogen adsorption isotherms measured on two large-pore ordered mesoporous silica MCM-41 samples modified with the same organosilane. …”
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Compaction and pore-collapse of chalky limestones from Mururoa atoll
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Multiscale Research on Pore Structure Characteristics and Permeability Prediction of Sandstone
Published 2021-01-01“…In this study, digital images with different magnifications were used to examine the pore structure and permeability of sandstone samples. …”
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Meso and micro pore structure test of Jingyang shallow loess
Published 2024-11-01“…Aiming to study the distribution of pore structure in shallow loess, this study analyzes the structural samples of loess using CT tomography and mercury intrusion methods in the southern plateau of Jingyang, Shaanxi Province. …”
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Heterogeneity and influencing factors of pore structure in different coal ranks
Published 2025-06-01“…To study the pore structure heterogeneity and influencing factors of different coal ranks, 8 coal samples with different coal ranks were tested through low-temperature N2 and CO2 adsorption experiments. …”
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