A review of the oxidation and reduction processes in acid sulphate soils
Published in Analytical Biochemistry
Proper mobile phase selection significantly improved high-performance ion-exchange fractionations of proteins. The pH and salt content of the eluant affected chromatographic behavior on both strong and weak ion-exchange columns. The retention and resolution of a number of proteins was examined on strong and weak ion-exchange supports with regard to...
Published in Analytical Biochemistry
The chromatographic separation of four proteins, cytochrome c, α 1-acid glycoprotein, ovalbumin, and β-lactoglobulin, was achieved on a 4.6 × 250-mm wide-pore polyethyleneimine (PEI)-silica gel column (5-μm particles, 330-Å pore size) with essentially baseline resolution using a 20-min linear gradient from 0.025 m potassium phosphate, pH 6.80, to 0...
Mössbauer experiments have been performed on Nafion ion exchange membranes neutralized with iron chloride. The recoilless fraction falls to zero at a temperature which depends on the water content, showing that the rigidity of the local ion environment is greatly influenced by the amount of water retained in these membranes. Two different iron site...
Nous montrons comment on peut, à l'aide de l'analogie entre l'équation des modes TE d'un guide et l'équation de Schrôdinger, étudier théoriquement des guides d'ondes lumineuses à gradient d'indice. Nous appliquons cette méthode aux guides réalisés par échange Li+ ↔ Na+ ou Ag+ ↔ Na+, dans un verre au sodium. L'accord entre théorie et expériences est...