… Litchfield and Liapis (12) found that optimal policies with respect to pressure could be …
pressure policy devel oped by Liapis and Litchfield (9) and Litchfield and Liapis (12). Since the …

A rigorous unsteady state and spatially multidimensional model is presented and solved to
describe the dynamic behavior of the primary and secondary drying stages of the …

The freeze‐drying process is studied under various operational policies through the use of
a sorption‐sublimation model. The operational policy that provides the shortest drying times …

A brief historical survey is presented on the evaluation of silica adsorbents in analytical
HPLC . The theory of analytical HPLC is mostly still being based on the height equivalent to a …

A model has been constructed using material and energy balances in the dried and frozen
regions of a material undergoing freeze drying. Both sublimatio and adsorption are …

A mathematical model which describes the nonsteady state heat and mass transfer operations
during the freeze drying process is presented. With the use of this model the problem of …

The effects of tray side and drying chamber wall temperature on the performance of freeze-drying
of pharmaceuticals in vials arranged in clusters of hexagonal arrays on trays are …

A mathematical model of perfusion chromatography was constructed for column systems. This
model could describe the dynamic behavior of single- and multi-component adsorption in …

The coupling of the constitutive expression for the electrostatic potential as specified
through Poisson's equation together with the constitutive equations for the mechanisms of …

The pore connectivity, pore size distribution and pore spatial distribution of the porous
structure of native and silanized silica particles were determined by matching the experimental …