Shuhong Wang

Shuhong Wang
Hohai University

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5
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54
Citations

Publications

Publications (5)
Preprint
Full-text available
In this study, we classify the COVID-19 anomalous diffusion in two categories of countries based on the mean squared displacement (MSD) of daily new cases, which includes the top four countries and four randomly selected countries in terms of the total cases. The COVID-19 diffusion is a stochastic process, and the daily new cases are regarded as th...
Article
Diffusion-weighted magnetic resonance imaging (dMRI) describes the architecture of biological tissues by using gradient pulse sequences to provide image contrast based on the hindered and restricted diffusion of water. Changes in the direction, duration and delay between the applied gradient pulses reveal patterns characteristic of diseases in the...
Article
In this study, the local time and space structural derivative diffusion model is introduced to describe non-Fickian diffusion in heterogeneous media from ultraslow to superfast. Its equivalent heterogeneous diffusion process (HDP) model with time and space-dependent diffusion coefficient is also given. The connection and difference between the prop...
Article
Full-text available
Ultraslow diffusion is characterized by a logarithmic growth of the mean squared displacement (MSD) as a function of time. It occurs in complex arrangements of molecules, microbes, and many-body systems. This paper reviews mechanical models for ultraslow diffusion in heterogeneous media from both macroscopic and microscopic perspectives. Macroscopi...
Article
Full-text available
Fractional calculus models are steadily being incorporated into descriptions of diffusion in complex, heterogeneous materials. Biological tissues, when viewed using diffusion-weighted, magnetic resonance imaging (MRI), hinder and restrict the diffusion of water at the molecular, sub-cellular, and cellular scales. Thus, tissue features can be encode...

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