Now showing items 31-40 of 126
Bayesian estimation of isotopic age differences
(Kluwer Academic Publishers-Plenum Publishers; International Association for Mathematical Geology ; Springer Science+Business Media, 1988-08)
Isotopic dating is subject to uncertainties arising from counting statistics and experimental errors. These uncertainties are additive when an isotopic age difference is calculated. If large, they can lead to no significant ...
Stabilization mechanism of colloidal suspensions by gum tragacanth: The influence of pH on stability
(Elsevier, 1988-11)
An acidic polyelectrolyte, gum tragacanth (GT), was found to stabilize polystyrene latex particles due to a steric stabilization mechanism. The stability depends significantly on the pH of the solution. To elucidate the ...
Modeling and prediction of specific compound adsorption by activated carbon and synthetic adsorbents
(Elsevier, 1980)
The performance characteristics of two activated carbons and eight synthetic adsorbents are compared. The comparison addresses both the equilibrium capacities and mass transport properties of the adsorbents. A new empirical ...
Kinetics of gelation and universality
(IOP Publishing Ltd, 1983-07-11)
The exact solution (size distribution ck(t) and moments Mn(t)) of Smoluchowski's coagulation equation (S-model) and of a modified equation (F-model) with a coagulation rate Kij=ij for i- and j-clusters is obtained for ...
Prediction and measurement of initial flocculation rates in quiescent media
(Elsevier, 1985-12)
Initial flocculation rate experiments were carried out with a dilute suspension of bidisperse polystyrene spheres (0.166 and 0.255 [mu]m in radius) under normal gravity conditions and, using a centrifuge, under conditions ...
Fischer-tropsch synthesis on charcoal-supported molybdenum: The effect of preparation conditions and potassium promotion on activity and selectivity
(Elsevier, 1985)
High dispersion and high activity charcoal-supported molybdenum catalysts were prepared using incipient wetness and equilibrium adsorption methods. Activities and selectivities of these catalysts were tested after reducing ...
Report on the catalytic activity of 6-heteropolymolybdates as potential Fischer-Tropsch synthesis catalysts
(Elsevier, 1986-02-14)
Unsupported and supported decomposition products of 6-heteropolymolybdates were tested as possible Fischer-Tropsch synthesis catalysts. Depending on the heteroatom, the activity changes significantly and the best supported ...
Computer modeling of antibiotic fermentation with on-line product removal
(Wiley Subscription Services, Inc., A Wiley Company, 1988-07-20)
The fermentation of Streptomyces griseus for the production of cycloheximide is similar to other antibiotic fermentations in that product synthesis is subject to feedback regulation and the desired product is degraded ...
Fluid flow and heat transfer, Aksel L. Lydersen, x + 357 pp., John Wiley & Sons, New york, 1979, $42.50
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1982-09)
No Abstract.
Effects of Humic Acid on the Adsorption of Tetrachlorobiphenyl by Kaolinite
(American Chemical Society, 1988-12-15)
Humic acids (HA) can affect the partitioning of organic contaminants
between aqueous and sediment phases by complexation in solution
and adsorption of the contaminant-HA complex to a mineral surface.
The objective of ...