Now showing items 61-70 of 142
New solutions to the fragmentation equation
(IOP Publishing Ltd, 1991-06-21)
A new general class of exact, explicit scaling solutions to the fragmentation equation is given. This class is described by a breakage rate a(x)=xlambda and the daughter distribution function yb(x mod y)=a gamma (xy)gamma ...
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 ...
Effect of micronization on the extent of drug absorption from suspensions in humans
(Springer, 1995)
A microscopic mass balance approach has shown that the initial saturation (Is), absorption
number (An), dose number (Do), and dissolution number (Dn) are four fundamental dimensionless parameters that can be used to ...
Use of coimmobilized biological systems to degrade toxic organic compounds
(Wiley Subscription Services, Inc., A Wiley Company, 1991-07)
The concept of coimmobilizing cell mass (and/or enzyme) and adsorbent in a hydrogel matrix for biodegradation of toxic organic chemicals was introduced. Under defined experimental conditions, the coimmobilized system using ...
Simulation of fluidized beds and other fluid-particle systems using statistical mechanics
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1996-03)
The expansion behavior and structural phenomena of fluid-particle systems was simulated using a method analogous to the Monte Carlo method for molecular systems. Individual particles are moved, and the resulting moves are ...
Detention and mixing in free water wetlands
(Elsevier, 1994-12)
Mixing was studied in free water surface wetland receiving pumped river water, by measurement of the non-interacting tracer lithium. The flow pattern was found to be intermediate between plug flow and well-mixed. The nominal ...
Fundamental study of the dissolution of calcium phosphonates from porous media
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1996-10)
Phosphonate-scale inhibitors are commonly used to prevent scale formation in many industrial processes involving high-salinity brine solutions. To effectively prevent scale formation in these industrial processes, one must ...
Reactions of polycyclic alkylaromatics: 5. pyrolysis of methylanthracenes
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1993-08)
1-, 2- and 9-methylanthracene were pyrolyzed neat at temperatures between 350 and 450°C for batch holding times up to 300 min. The pyrolysis proceeded through three parallel primary reaction pathways: one led to anthracene ...
Unified network model for adsorption–desorption in systems with hysteresis
(Wiley Subscription Services, Inc., A Wiley Company, 1999-04)
The problem of equilibrium and kinetics for adsorption–desorption of condensable vapors in porous media is studied experimentally and theoretically. For adsorption, the network model for diffusion based on pore blocking ...
Temperature-programmed desorption of H2 from molybdenum nitride thin films
(Elsevier, 1994-07)
The thermal desorption of hydrogen from [beta]-Mo16N7, [gamma]-Mo2N and [delta]-MoN thin films was investigated. Hydrogen adsorption at [approximate]270 K produced two hydrogen desorption peaks, one at [approximate]370 K ...