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Tracer diffusion
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The structure and dynamics of networks formed by rod-shaped particles can be indirectly investigated by measuring the diffusion of spherical tracer particles. This method was used to characterize cellulose nanofibril (CNF) networks in both dispersed and arrested states, the results of which were compared with coarse-grained Brownian dynamics simulations.
10p
vihermione
30-12-2022
14
2
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The objective of this study was to use confocal fluorescence recovery after photobleaching (FRAP) to examine the specific and dose-dependent effect of proteoglycan 4 (PRG4) on hyaluronan (HA) solutions of different molecular weight; and assess the effect of reduction and alkylation (R/A) of PRG4 on its effects on HA solutions.
9p
vivermont2711
28-01-2021
5
2
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The simulation finds a large number of vacancy-simplexes, which plays a role of diffusion vehicle for cobalt atom and varies with relaxation degree. A new diffusion mechanism for tracer diffusivity in cobalt amorphous solid is supposed as follows: The elemental atomic movement includes a jump of neighbouring atoms into the vacancy-simplexes and then collective displacement of a large number of atoms.
9p
larachdumlanat127
20-12-2020
13
2
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In our previous work on microscopic bubbles in AMAs, we determined the diffusion coefficients of tracer atoms via microscopic bubbles in Fe80B20 AMAs. Generally, our results were consistent with experimental data. However, the dependence of the microscopic bubbles and the diffusion coefficients on atom concentration in the AMAs has not yet been determined. Therefore, the goal of this paper is to investigate the dependence of microscopic bubbles and the diffusion coefficient of tracer atoms on B concentration in Co-B AMAs.
7p
tamynhan8
04-11-2020
13
2
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Many medical imaging techniques utilize fitting approaches for quantitative parameter estimation and analysis. Common examples are pharmacokinetic modeling in dynamic contrast-enhanced (DCE) magnetic resonance imaging (MRI)/computed tomography (CT), apparent diffusion coefficient calculations and intravoxel incoherent motion modeling in diffusion-weighted MRI and Z-spectra analysis in chemical exchange saturation transfer MRI.
18p
vicoachella2711
27-10-2020
12
0
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