Variable (or wavelength) selection plays an important role in the quantitative analysis of
near-infrared (NIR) spectra. A modified method of uninformative variable elimination (UVE) …

We present a multiscale simulation approach to derive effective bed diffusion coefficients (D
bed) in hierarchically structured, macro/mesoporous materials employed as fixed beds for …

A particle tracking code is developed to solve a general time-fractional diffusion equation
(FDE), yielding a Lagrangian framework that can track particle dynamics. Extensive …

Fracturing technology that can enhance the delivery of amendments has attracted attention
in the remediation of low-permeability contaminated sites. However, there are few works on …

We present experimental evidence of asymmetrical dispersive transport of a conservative
tracer across interfaces between different porous materials. Breakthrough curves are …

In this article, we propose new Monte Carlo techniques for moving a diffusive particle in a
discontinuous media. In this framework, we characterize the stochastic process that governs …

Accurate numerical simulation of solute transport or multiphase flow through heterogeneous
porous media is still a challenge. One reason is that in continuum models, sharp material …

Infiltration of diffusing particles from one material to another where the diffusion mechanism
is either normal or anomalous is a widely observed phenomena. When the diffusion is …

The study of transport processes in a single fracture is the basis of understanding transport
in complex fractured networks. Many single fractures in the field are filled with sediments …

Natural sediments or aquifers frequently exhibit layering and structural contrasts, which give
rise to anomalous mass transfer behavior. Moreover, the effects of the interface on mass …