Now showing items 21-30 of 126
Co oxidation on Pd/Al2O3. Transient response and rate enhancement through forced concentration cycling
(Elsevier, 1986)
Catalytic oxidation of CO over Pd/Al2O3 was studied with a novel monolithic reactor, with inside the reactor detection of reactants and products. Periodic switching of the feed between CO/N2 and O2/N2 resulted in time-averaged ...
Fractal dimensions and geometries of caves
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1986-11)
Lengths of all caves in a region have been observed previously to be distributed hyperbolically, like self-similar geomorphic phenomena identified by Mandelbrot as exhibiting fractal geometry. Proper cave lengths exhibit ...
Fermentation monitoring by polymeric-resin-based microbiol assay
(Wiley Subscription Services, Inc., A Wiley Company, 1983-03)
A polymeric-resin-based microbiological assay is shown to yield results consistent with classical inhibition zone theory. This novel assay is applicable to cycloheximide, an antifungal antibiotic, at concentrations below ...
Monomer-addition growth with a slow initiation step: A growth model for silica particles from alkoxides
(Elsevier, 1989-10-01)
A simplified monomer-addition model with a first-order activation step is developed to describe the dynamics of growth of silica particles from alkoxides. In the limit of slow hydrolysis, we obtain expressions for the ...
Effect of exercise training on glucose tolerance, in vivo insulin sensitivity, lipid and liproprotein concentrations in middle-aged men with mild hypertriglyceridemia
(Elsevier, 1985-03)
The effects of 9 weeks of aerobic exercise training with maintenance of stable body weight upon insulin sensitivity and upon glucose, lipid, and lipoprotein concentrations were studied in 10 middle-aged men with mild ...
Cell immobilization in k -carrageenan with tricalcium phosphate
(Wiley Subscription Services, Inc., A Wiley Company, 1982-08)
The objectives of this research were to investigate the growth of immobilized yeast cells in k -carrageenan gel and study the effect of trapping hydroxyapatite (tricalcium phosphate) crystals into the matrix. Using k ...
Emulsion stability--theoretical studies on simultaneous flocculation and creaming
(Elsevier, 1981-07)
A general dynamic equation is derived describing the behavior of a polydispersed emulsion in which Brownian flocculation, sedimentation-flocculation, and creaming are taking place simultaneously. The resulting equation ...
Spectroscopic and scattering investigation of isopoly-molybdate and tungstate solutions
(Elsevier, 1984)
Detailed spectroscopic and scattering investigations of isopoly-molybdate and -tungstate solutions as a function of concentration and pH were made. From scattering results the apparent molecular weights were determined as ...
Competition among flow, dissolution, and precipitation in porous media
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1989-07)
A theoretical and experimental study has been carried out on flow, dissolution, and precipitation in porous media. Flow experiments were performed on linear carbonate cores using acidic ferric chloride solutions. Dissolution ...
Effect of composition on molecular alignment in polyethylene terephthalate copolymers
(Elsevier, 1982-04)
In this study molecular alignment in copolymers of polyethylene terephthalate (PET) and p-hydroxybenzoic acid (PHB) was examined by means of differential radial distribution function (DRDF) analysis of wide angle X-ray ...