Now showing items 21-30 of 76
Production and characterization of antisera raised to the manninotrionate group [[alpha]--Galp-(1-->6)-[alpha]--Galp-(1-->6)--gluconate]
(Elsevier, 1989-06-15)
Manninotrionate [[alpha]--Galp-(1-->6)-[alpha]--Galp-(1-->6)--gluconate] was coupled to bovine serum albumin (BSA), and antisera were raised in rabbits to this carbohydrate--protein conjugate. The antisera were studied ...
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 ...
Thermodynamics of thallium alkanoates VI. Thallium(I) n-heptanoate revisited
(Elsevier, 1989-04)
The heat capacity of thallium(I) n-heptanoate has been remeasured on a new sample on which the preparative procedures were modified to eliminate the 1-1 (salt+acid) complex (soap) in a previously studied sample. The ...
Mixed copper, zinc 2-amino benzylic organometallics as efficient reagents for the synthesis of heterocycles
(Elsevier, 1989)
The mixed copper, zinc benzylic organometallics 1a-1c react efficiently with various electrophiles. By the reaction with acyl chlorides, highly functionalized 2-substituted indoles are produced. The treatment of 1a with ...
Direct and replacement ion chromatography with potentiometric detection using a silver/silver bromide electrode
(Elsevier, 1989)
The use of Ag/AgX electrodes as potentiometric detectors in modern ion chromatography methods is re-examined. Contrary to previous reports, in both flow-injection and chromatographic experiments the Ag/AgBr electrode is ...
Molecular reaction kinetics inside channel pores: Delayed fluorescence of naphthalene in methanol
(Elsevier, 1989-05-26)
A one-dimensional, diffusion-controlled, reaction is followed in time by phosphorescence (monitoring reactant) and delayed fluorescence (monitoring product). The triplet (excited) naphthalene molecules move in a methanol ...
Ab initio force fields of glycine dipeptide in C5 and C7 conformations
(Elsevier, 1989-02)
Schafer and coworkers have previously derived, with the 4-21 Gaussian basis set ab initio optimized geometries for the glycine dipeptide, CH3CONHCH2CONHCH3, in several conformations. Using their geometries for the C5 and ...
Toughening mechanisms in elastomer-modified epoxies
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1989-07)
The role Of matrix ductility on the toughenability and toughening mechanism of elastomer-modified, diglycidyl ether of bisphenol A (DGEBA)-based epoxies is investigated. Matrix ductility is varied by using epoxide resins ...
An unusual reductive ring-opening of the 1,2,3,5,6,7-hexaazaacenaphthylene ring system
(Elsevier, 1989)
Studies on an unexpected reaction involving a reductive cleavage of the pyridazine moiety of a tricyclic heterocycle are described. Structure assignments for the products obtained from the reductive cleavage were made using ...
Plasticity of brittle epoxy resins during debonding failures
(Kluwer Academic Publishers; Chapman and Hall Ltd. ; Springer Science+Business Media, 1989-11)
A remarkably high degree of plasticity in brittle epoxies during debonding failures is reported. The plasticity is exhibited by the presence of ridges on the debonded surfaces having a width and height above the general ...