Now showing items 21-30 of 94
A solid-phase enzyme-linked assay for vitamin B 12
(Springer-Verlag, 1989-01)
A new solid-phase enzyme-linked competitive binding assay for vitamin B 12 (cyanocobalamin) is described. The assay is based on the competition between analyte B 12 molecules and a glucose-6-phosphate dehydrogenase-vitamin ...
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 ...
Dynamics and control of quasirational systems
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1989-06)
Systems having transfer functions of the form documentclass{article}pagestyle{empty}begin{document}$$ G_P (s) = frac{{P_1 (s) - P_2 (s)e^{ - t_d s} }}{{Q(s)}}, $$end{document} where P 1 ( s ), P 2 ( s ) and Q ( s ) ...
Deadtime compensation for nonlinear processes
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1989-09)
Many industrially important processes feature both nonlinear system dynamics and a process deadtime. Powerful deadtime compensation methods, such as the Smith predictor structure in state space for linear systems is presented ...
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 ...
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 ...
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 ...
Bovine testicular [beta]-galactosidase: Purification of enzyme fractions that exhibit high affinity for phosphomannosyl receptors
(Elsevier, 1989-11-01)
An improved method is described for the preparation of bovine testicular [beta]-galactosidase that allows the isolation of enzyme fractions that bind avidly to phosphomannosyl receptors. The procedure permits removal of a ...
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 ...