Now showing items 21-30 of 142
Oxygen transport in biofilm electrodes for screening of toxic chemicals
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1990-01)
A biosensor electrode system with unique configuration and a thin layer of immobilized yeast cells, set on the surface of an amperometric oxygen membrane electrode, was developed for rapid screening of toxic chemicals in ...
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 ...
Comparison of rigid and flexible simple point charge water models at supercritical conditions
(John Wiley & Sons, Inc., 1996-11-30)
This study investigates the differences between the predictions of various properties of rigid and flexible simple point charge water models at supercritical conditions. Molecular dynamics simulations were conducted for ...
Model for the reaction-rate-limited dissolution of solids with Etch-rate heterogeneities
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1996-09)
The coalescence of isotropic etch pits observed in the dissolution of semiconductor substrates is studied using a discrete model for the evolution of the surface under reaction-rate-limited conditions. The model discretizes ...
Flow-aligning and tumbling in small-molecule liquid crystals: pure components and mixtures
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 1999-08)
The results of an experimental study to measure the tumbling parameter, λ, for various small-molecule liquid crystals and their mixtures are presented. The methods used include textural observations (twist walls), a direct ...
Chemical permeabilization and in situ removal of daidzein from biologically viable soybean (Glycine max) seeds
(Kluwer Academic Publishers; Chapman and Hall ; Springer Science+Business Media, 1998-09)
After 24 h of chemical permeabilization with 20% (v/v) methanol at 25 °C, the amount of daidzein released from soybean seeds is 15 to 20% of the amount (0.0423 ± 0.0045 mg/g seed dry wt) obtained by physical grinding. With ...
An explicit solution to a discrete fragmentation model
(IOP Publishing Ltd, 1992-05-07)
The discrete binary fragmentation equation is solved explicitly for a model where the net rate of breakup of a particle of size k, ak, equals (k-1)/(k+1), and the daughter-size distribution bik/ equals 2/(k-1). This system ...
Reactions of polycyclic alkylaromatics: Structure and reactivity
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1991-11)
A family of alkyl-substituted polycyclic aromatic hydrocarbons was pyrolyzed in microbatch reactors at temperatures between 350°C and 425°C. A general pyrolysis network was deduced for these compounds, and it comprised two ...
Methane to methanol in supercritical water
(Elsevier, 1994-06)
We examined the feasibility of producing methanol from the partial oxidation of methane in near-critical and supercritical water. Oxygen was always the limiting reactant. The parameter space investigated experimentally ...
Fe---P---0 catalysts for methane utilization--catalyst development and identification
(Elsevier, 1990-05)
Fe---P---0 catalyst formulations show great promise for oxidative coupling of methane. They attain yields of C2 hydrocarbons comparable to the best in the literature at a temperature which is far below those reported. The ...