Now showing items 31-40 of 67
Stereospecific synthesis of - and -1 alkoxy-1,3-butadienes
(Elsevier, 1984)
A stereospecific, highly efficient, generally applicable synthesis of - and -1-alkoxy-1,3-butadienes involving dehydrative decarboxylations of 4,5-unsaturated-2-alkoxy-3-hydroxy-carboxylic acids is described.
The existence of a critical salt concentration for particle release
(Elsevier, 1984-09)
A critical salt concentration (CSC) was found to exist in the water sensitivity of Berea sandstone. If the salinity of the permeating fluid falls below the CSC, the sandstone permeability is significantly reduced as a ...
Fatigue crack growth retardation inconel 600
(Elsevier, 1984)
The effect of single-cycle overloads on the subsequent fatigue crack growth behavior of Inconel 600 is studied. Overloads ranging from 10 to 50% are applied to a sample undergoing baseline fatigue crack growth at constant ...
Hydroxyapatite dissolution rates in fluoride/dodecylamine solutions
(Elsevier, 1984-05)
The influence of fluoride (F) alone and together with dodecylamine hydrochloride (DAC) on the dissolution rate behavior of hydroxyapatite (HAP) crystal suspensions has been studied. The results showed that F and DAC inhibit ...
Attempted polymerization of substituted pipecolic acid NCA's: Dimerization and mechanism
(John Wiley & Sons, Inc., 1984-01)
Racemic and optically active N -carboxyanhydrides (NCA)s of 2-methyl- and cis -6-methylpipecolic acid, when subjected to polymerization conditions in solution or in bulk whether with “weak” or “strong” base initiators, ...
A theoretical study of the gas-phase basicity of molecules containing arsenic--carbon multiple bonds
(Elsevier, 1984-07)
Gas-phase proton affinities are calculated using ab initio methods for the unknown unsaturated molecules H2CAsH and HCAs as well as for AsH3. The results parallel those previously found by us for the corresponding phosphorus ...
Di- and triheteronuclear metal cluster anions containing transition metals
(Elsevier, 1984-03-01)
Direct, low-temperature esterification: Synthesis of optically active esters of thymine derivatives
(John Wiley & Sons, Inc., 1984-04)
No Abstract.
Hydrophobic interactions in catalysis by imidazole-containing polymers
(John Wiley & Sons, Inc., 1984-08)
The catalytic activity of imidazole-containing polymers in the hydrolyses of substrates with poor leaving groups was examined. Hydrolyses of p -methoxyphenyl esters (S n ) catalyzed by poly[4(5)-vinylimidazole] (pvIm) in ...