Now showing items 11-20 of 142
Stability of coextrusion through converging dies
(Elsevier, 1991-12)
A linear stability analysis of multilayer flow of viscoelastic liquids through long, converging dies is performed by a rigorous two-dimensional analysis (2-D), as well as by a simplified one-dimensional analysis (1-D) on ...
Selective extraction using preferential transport through adsorptive membranes
(Wiley Subscription Services, Inc., A Wiley Company, 1996-12-05)
Selective extraction of a protein from a mixture can be accomplished using an adsorptive membrane and low displacement recuperative parametric pumping. Low displacement recuperative parametric pumping can lead to the ...
Three-dimensional streamlined finite elements: Design of extrusion dies
(John Wiley & Sons, Ltd, 1992-01-15)
A method to determine three-dimensional die shapes from extrudate swell and vice versa is presented using a three-dimensional Galerkin finite element method based on a streamlined formulation with the fluid velocities and ...
LETTER TO THE EDITOR: Exact critical exponent for the shortest-path scaling function in percolation
(IOP Publishing Ltd, 1999-10-29)
It is shown that the critical exponent g1 related to pair-connectiveness and shortest-path (or chemical distance) scaling, recently studied by Porto et al, Dokholyan et al and Grassberger, can be found exactly in two ...
Surface structure and composition of high-surface-area molybdenum nitrides
(Elsevier, 1994-05-01)
The determination of surface structure is critical in elucidating structure-function relationships for catalytic materials. However, such materials often consist of active regions of very limited spatial extent, rendering ...
Protein separation using membrane-encapsulated soluble ligand conjugates
(Elsevier, 1990-05)
A new approach for isolating and recovering biological macromolecules using membrane-encapsulated soluble ligand conjugates was investigated. Membrane-encapsulated solid adsorbents have been successfully developed and ...
Lubrication theory for n-layer thin-film flow with applications to multilayer extrusion and coating
(Elsevier, 1990)
Two-dimensional, n-layer isothermal flows of Newtonian liquids are analyzed by means of the Reynolds lubrication approximation (Phil. Trans. R. Soc. 177, 157, 1886). For algebraic simplicity, the coordinates are transformed ...
Influence of transport and reaction on wormhole formation in porous media
(Wiley Subscription Services, Inc., A Wiley Company, 1998-09)
The transport and reaction of fluids in porous media results in unique pore growth and channel evolution as the media are dissolved. This often leads to the formation of highly conductive flow channels, commonly referred ...
Fabrication of conductometric gas-sensing films by selected area chemical-vapor deposition
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1997)
A new selected-area chemical-vapor deposition (CVD) process to fabricate thin sensing films on a micromachined silicon-based, conductometric gas-sensor structure is reported. The CVD method is self-lithographic and does ...
Reactions at supercritical conditions: Applications and fundamentals
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1995-07)
Supercritical fluids posses properties that make them attractive as media for chemical reactions. Conducting chemical reactions at supercritical conditions affords opportunities to manipulate the reaction environment ...