Now showing items 11-20 of 52
Cholesterol monohydrate dissolution rate studies in aqueous micellar solutions of polyoxyethylene nonylphenol ether and ionic surfactants
(Elsevier, 1984-10)
The influences of electrical and other factors on the dissolution kinetics of cholesterol monohydrate in micellar solutions were quantified in terms of mass transfer resistances due to interfacial processes and ...
Fractal to classical crossover of chemical reactions
(Elsevier, 1984-05-18)
Computer simulations on binary reactions of random walkers (A + A --> A) on two- and three-dimensional percolation clusters bear out the recent superuniversality conjecture (integrated reaction rate [alpha] t213). ...
Gravity-induced flocculation
(Elsevier, 1984-09)
In polydisperse colloidal systems, flocculation can occur as a result of the differential creaming rates between small and large particles. As an improvement on earlier work, we have rigorously modelled this process of ...
Preparation of 1-deuterioaldehydes via tub use of diisobutylaluminum deuteride (DIBAL-D)
(Elsevier, 1984)
Deuterioaldehydes, essential precursors In the preparation of chiral primary deuterioalcohols, have been prepared in yields ranging from 55-75% via reduction of methyl and ethyl esters at -78[deg]C with diisobutylaluminun ...
Hydroformylation as a simple and efficient one carbon homologation of homoallylic alcohols. Synthesis of prelog-djerassi lactone.
(Elsevier, 1984)
A hydroformylation oxidation sequence is described for the efficient conversion of homoallylic alcohols to [delta]-lactones. The methodology is applied to the synthesis of Prelog-Djerassi lactone.
Structural organization of the oxidizing side of photosystem II. Exogenous reductants reduce and destroy the Mn-complex in photosystems II membranes depleted of the 17 and 23 kDa polypeptides
(Elsevier, 1984-12-18)
Removal of 23 and 17 kDa water-soluble polypeptides from PS II membranes causes a marked decrease in oxygen-evolution activity, exposes the oxidizing side of PS II to exogenous reductants (Ghanotakis, D.F., Babcock, G.T. ...
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 ...
Vibrational analysis of peptides, polypeptides, and proteins. XXIV. Conformation of poly(Α-aminoisobutyric acid)
(Wiley Subscription Services, Inc., A Wiley Company, 1984-10)
Raman and polarized ir spectra have been obtained on built-up monomolecular films of poly(Α-aminoisobutyric acid), and analyzed in the context of normal mode calculations on 3 10 -, Α-, and Α′-helix conformations of this ...
Vibrational analysis of peptides, polypeptides, and proteins. XXI. Β-Calcium-poly( L -glutamate)
(Wiley Subscription Services, Inc., A Wiley Company, 1984-08)
The observed Raman and ir spectra of Ca-poly( L -glutamate) in the Β conformation have been analyzed by means of a normal mode calculation. The force field for the main chain was transferred without refinement from Β-poly( ...
DNA polymerase in nuclei isolated from herpes simplex virus type-2-infected cells. Characterization of the reaction product and inhibition by substrate analogs
(Elsevier, 1984-02-24)
Nuclei isolated from herpes simplex virus (HSV) type 2-infected KB cells were examined for their capacity to serve as an in situ source of herpes DNA polymerase. In contrast to purified enzymes with added template, approx. ...