Now showing items 21-30 of 305
Minimizing the surface effect of PDMS–glass microchip on polymerase chain reaction by dynamic polymer passivation
(John Wiley & Sons, Ltd., 2007-01)
Polydimethyl siloxane (PDMS)–glass microchip has a very strong surface effect on polymerase chain reaction (PCR), leading to a very poor PCR yield. In the work reported here, practical dynamic passivation of surfaces of ...
Macrosonics in industry : 4. Chemical processing
(Elsevier, 1975-01-01)
Acoustic irradiation can result in increased inter-phase mass and heat transfer rates. The second-order acoustic effects of cavitation, interfacial instability, radiation pressure and acoustic streaming are responsible for ...
Role of interfacial interactions on the anomalous swelling of polymer thin films in supercritical carbon dioxide
(Wiley Subscription Services, Inc., A Wiley Company, 2007-06-01)
It has recently been shown that thin polymer films in the nanometer thickness range exhibit anomalous swelling maxima in supercritical CO 2 (Sc-Co 2 ) in the vicinity of the critical point of CO 2 . The adsorption isotherm ...
The effects of suspended residual solids on the rheology of coal-derived liquids
(Elsevier, 1982-05)
The rheology of the products of coal liquefaction was investigated using a Weissenberg Rheogoniometer, Model R-16, modified to allow total-normal-force measurements. Solvent extracted oils and asphaltene fractions were ...
Self-propagating high temperature synthesis and dynamic compaction of titanium diboride/titanium carbide composites
(Kluwer Academic Publishers; Springer Science+Business Media, 2000-05)
Self-propagating High-temperature Synthesis (SHS) of titanium and boron carbide (B 4 C) combined with explosively driven Dynamic Compaction (DC) was employed for the fabrication of composite TiB 2 /TiC compacts. A 2 3 ...
Dissolution kinetics: Catalysis by salts
(Elsevier, 1981-07)
The dissolution of silicate minerals by hydrofluoric acid has been found to be catalyzed by salts such as NH4Cl, NaCl, and LiCl as well as by strong acids. This catalysis is a strong function of pH and is attributed to the ...
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 ...
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 ...
New sorbents for desulfurization of diesel fuels via Π-complexation
(Wiley Subscription Services, Inc., A Wiley Company, 2004-04)
Desulfurization of a commercial diesel fuel by different adsorbents was studied in a fixed-bed adsorber operated at ambient temperature and pressure. In general, the adsorbents tested for total sulfur adsorption capacity ...
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 ...