Now showing items 1-10 of 11
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 ...
Fugacity coefficients for free radicals in dense fluids: HO 2 in supercritical water
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1997-05)
The fugacity coefficients of the hydroperoxyl radical in supercritical water are estimated through molecular simulations. A potential function for the radical is first derived from ab initio self-consistent field molecular ...
The origin of stress-oscillation damping during startup and reversal of torsional shearing of nematics
(Steinkopff-Verlag; Springer Science+Business Media, 1997-09)
Using a controlled-temperature shear cell mounted on a polarizing microscope, we observe the behavior of nematic 4,4′- n -octyl-cyanobiphenyl (8CB) during start-up and reversal of shearing in a torsional parallel-plate ...
Modeling flow in disordered packed beds from pore-scale fluid mechanics
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1997-06)
Network models are an effective means of incorporating pore-scale heterogeneity into flow models of porous materials. The drawback to these models used to be the inability to obtain quantitative macroscopic parameters ...
Determination of the bond percolation threshold for the Kagomé lattice
(IOP Publishing Ltd, 1997-08-07)
The hull-gradient method is used to determine the critical threshold for bond percolation on the two-dimensional Kagomé lattice (and its dual, the dice lattice). For this system, the hull walk is represented as a self-avoiding ...
“Fracture” phenomena in shearing flow of viscous liquids
(Steinkopff-Verlag; Springer Science+Business Media, 1997-09)
In start-up of steady shearing flow of two viscous unentangled liquids, namely low-molecular-weight polystyrene and α-D-glucose, the shear stress catastrophically collapses if the shear rate is raised above a value ...
Application of membrane-based preferential transport to whole broth processing
(Wiley Subscription Services, Inc., A Wiley Company, 1997-08-20)
Preferential transport in adsorptive membranes can be used to selectively remove biochemicals directly from fermentation broths. During preferential transport, an adsorbing solute is selectively transported across the ...
Theoretical basis for the Dubinin-Radushkevitch (D-R) adsorption isotherm equation
(Kluwer Academic Publishers; Springer Science+Business Media, 1997-09)
The Dubinin-Radushkevitch (D-R) equation, which was originally proposed as an empirical adaptation The Polanyi adsorption potential theory, has been the fundamental equation to quantitatively describe the adsorption gases ...
zrp2: a novel maize gene whose mRNA accumulates in the root cortex and mature stems
(Kluwer Academic Publishers; Springer Science+Business Media, 1997-10)
A near full-length cDNA clone (pZRP2) was isolated from a cDNA library constructed from maize root mRNAs. The predicted polypeptide has a calculated molecular mass of 66 975 Da, is largely hydrophilic, and contains 26 ...
Gas Sensing Characteristics of Ultrathin TiO 2− x Films Investigated with XPS, TPD and In Situ Resistance Measurements
(John Wiley & Sons, Ltd., 1997-02)
Ultrathin Pt/TiO 2− x sensing films are characterized to investigate the adsorption and reaction processes that cause resistance changes. The films are prepared by oxidizing films with a nominal thickness of 65 Å Pt ...