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1521
Physico-Chemical Properties of Granular Sorbents Based on Natural Bentonite Modified by Polyhydroxocations of Aluminum and Iron (III) by Co-Precipitation
Published 2025-01-01“…Then the sorption process begins to proceed in a mixed diffusion mode, when it limits both the external diffusion factor and the internal diffusion factor (the diffusion of the sorbent to the active centers through the system of pores and capillaries). …”
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1522
Molecular Dynamics Simulation of CO<sub>2</sub>-ECBM Under Different Moisture Contents
Published 2025-01-01“…After CO<sub>2</sub> injection, the main adsorption layer of CH<sub>4</sub> shifted from X = 5 and X = 9 to X = 8.7 and X = 12.5, respectively, and obvious detachment and diffusion occurred. The distribution of the molecular motion and diffusion coefficient revealed the considerable displacement and dispersion of the gas molecules. …”
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1523
Increase of austenitic ductile iron type D5S durability by high temperature pre-treatment
Published 2020-01-01“…The latter was explained by the change in the calculated diffusion coefficients in the alloy for Ni and Fe, namely up to 900°C the diffusion coefficient for Fe was much higher than for Ni, while above 900°C the diffusion coefficient for Ni becomes higher than for Fe. …”
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1524
Use of Oxalic Acid-Modified Rice Husk for the Adsorption of Neutral Red from Aqueous Solutions
Published 2010-08-01“…The mechanism of the process was found to be complex, consisting of both surface adsorption and pore diffusion. The values of the effective diffusion parameter, D eff , were estimated to be of the order of 10 −8 cm 2 /s, indicated that intra-particle diffusion was not the rate-controlling step. …”
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1525
Experimental assessment and analysis of mass transport limiting current density in water vapor-fed polymer electrolyte membrane electrolyzers
Published 2024-12-01“…Because of this, there is a possibility that the cell will rely on water vapor diffusion through the evolving oxygen gas to deliver the water reactant to the OER catalyst. …”
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1526
Nanoconfined Gas Flow Behavior in Organic Shale: Wettability Effect
Published 2022-01-01“…In addition, both the bulk-gas flow model and surface-diffusion model, developed in this research, are able to achieve excellent agreements compared with the existed documents, clarifying the reliability of the proposed model. …”
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1527
Microstructure and transport properties of lithium hexafluorophosphate solutions in binary mixture of dimethyl carbonate with ethylene carbonate from molecular dynamics simulation
Published 2024-06-01“…The conductivity values were obtained with the diffusion coefficient values of ions via Nernst-Einstein relation. …”
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1528
Advanced finite element modeling for dual simulations of Carreau-Yasuda fluid subjected to thermal jump using three-dimensional stretching and shrinking surfaces
Published 2025-01-01“…The current problem consists of dual solutions of Carreau Yasuda fluid in flow, mass diffusion and heat energy on 3D expanding and shrinking surfaces. …”
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1529
Estimation of Corrosion-Free Life for Concrete Containing Ground Granulated Blast-Furnace Slag under a Chloride-Bearing Environment
Published 2017-01-01“…When it comes to the sensitivity of parameters to service life, the effective diffusivity showed a marginal influence on serviceability, irrespective of GGBS contents while surface chloride content and critical threshold concentration revealed more crucial factors to long term chloride diffusion. …”
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1530
Optimal network sizes for most robust Turing patterns
Published 2025-01-01“…Abstract Many cellular patterns exhibit a reaction-diffusion component, suggesting that Turing instability may contribute to pattern formation. …”
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1531
Towards Robust Evaluation of Aesthetic and Photographic Quality Metrics: Insights from a Comprehensive Dataset
Published 2024-01-01“…Our investigation encompasses several metrics, including BRISQUE for assessing photographic quality, NIMA aesthetic and NIMA technical for evaluating both aesthetic and technical aspects, Diffusion Aesthetics (employed in Stable Diffusion), and PhotoILike for gauging the commercial appeal of real estate images. …”
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1532
Provision of information by local governments using the Internet: case studies in Japan
Published 2007-12-01“…First, the process of the diffusion of local government websites in Japan is analyzed. …”
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1533
Effect of CNT-COOH Addition on the Compressive Strength, Chloride Resistance, and Microstructure of Cement Mortar
Published 2022-01-01“…While there was an increase in the chloride diffusion coefficient up to 0.05% weight fraction, higher dosage led to a drop in the chloride diffusion coefficient with a further increase in the compressive strength. …”
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1534
Reduction kinetics of lead-rich slag with carbon in the temperature range of 1073 to 1473K
Published 2013-01-01“…The reduction reaction was found to be mainly liquid-solid reaction, which was chemically controlled at initial stage and diffusion controlled at later stage. The apparent activation energy was calculated to be 83.8 kJ/mol at chemically controlled stage and 224.9 kJ/mol at diffusion controlled stage for reduction of industrial sinter. …”
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1535
Internet das coisas (IoT) e novas dinâmicas da produção agrícola no campo brasileiro
Published 2022-09-01“…The analysis of the agents involved in the development, diffusion and connection of these systems and the assessment of their impacts on agricultural production allow us to visualize two complementary and contradictory processes in the Brazilian countryside: 1) the deepening of inequalities, arising from the socially and spatially selective diffusion of digital technologies; 2) the potential mitigation of the deleterious effects of the first trend, that is, of the disparities between agents of the upper and lower circuit of agrarian economies, through the diffusion and trivialization of the use of information technologies and internet infrastructures in the context of family farming, valuing the diverse knowledge of small and medium producers and cooperatives.…”
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1536
Atomistic Simulation of High-Density Uranium Fuels
Published 2011-01-01“…These include (1) the trend indicating formation of interfacial compounds, (2) much reduced diffusion of Al into U-Mo solid solution due to the high Si concentration, (3) Si depletion in the Al matrix, (4) an unexpected interaction between Mo and Si which inhibits Si diffusion to deeper layers in the U-Mo solid solution, and (5) the minimum amount of Si needed to perform as an effective diffusion barrier. …”
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1537
Damage modelling in concrete subject to sulfate attack
Published 2014-07-01“…In this work, we make use of a two-ions formulation of the reactive-diffusion problem and we propose a bi-phase chemo-elastic damage model aimed to simulate the mechanical response of concrete and apt to be used in structural analyses.…”
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1538
On one problem with non-local boundary conditions
Published 2001-12-01“… In this article two problems with non-local boundary conditions are analysed: stationary diffusion problem with constant coeficients and non-local boundary condition, and stationary diffusion problem with additional convection term and non-local boundary condition. …”
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1539
Fujita Exponent for a Nonlinear Degenerate Parabolic Equation with Localized Source
Published 2014-01-01“…This paper is devoted to understand the blow-up properties of reaction-diffusion equations which combine a localized reaction term with nonlinear diffusion. …”
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1540
Politiques publiques sectorielles suisses de lutte contre la dégradation des sols
Published 2023-12-01“…The sealing of areas, earthworks or backfilling, the diffusion of contaminating substances in the soil, topsoil harvesting or the transformation of forests, of natural or agricultural environments for other purposes (housing, activities, transport, leisure) result in soil significant and ongoing deterioration. …”
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