This paper reviews the use of discrete particle models (DPMs) for the study of the flow
phenomena prevailing in fluidized beds. DPMs describe the gas-phase as a continuum …

Gas-solid fluidized beds are widely applied in many chemical processes involving physical
and/or chemical transformations, and for this reason they are the subject of intense research …

Numerical models of gas-fluidized beds have become an important tool in the design and
scale up of gas-solid chemical reactors. However, a single numerical model which includes …

The intestinal epithelium is the most rapidly self-renewing tissue in adult mammals. It is
currently believed that four to six crypt stem cells reside at the+ 4 position immediately above …

Ever since the Irish mathematician William Rowan Hamilton introduced quaternions in the
nineteenth century--a feat he celebrated by carving the founding equations into a stone …

A discrete particle model of a gas-fluidised bed has been developed and in this the two-
dimensional motion of the individual, spherical particles was directly calculated from the …

Two forms of genetic instability have been described in colorectal cancer 1: microsatellite
instability and chromosomal instability. Microsatellite instability results from mutations in …

Extensive lattice‐Boltzmann simulations were performed to obtain the drag force for random
arrays of monodisperse and bidisperse spheres. For the monodisperse systems, 35 different …

We present version 4.0 of the symbolic manipulation system Form. The most important new
features are manipulation of rational polynomials and the factorization of expressions. Many …

The LKB1 gene encodes a serine/threonine kinase that is mutated in the Peutz-Jeghers
cancer syndrome. LKB1 is homologous to the Par-4 polarity genes in C. elegans and D …