APPLICATION OF STATIC AND DYNAMIC THERMOANALYTICAL METHODS TO ESTIMATE THE LIFETIME OF ELECTRICAL INSULATIONS

Different electrical insulations have been investigated by dynamic and static thermoana- lytical methods. The kinetic parameters were evaluated with the aid of a fast calculation method. The results were discussed on the basis of the thermal stability and the lifetime curves thus obtained

ON THE DIOXIMINE COMPLEXES OF TRANSITION METALS. LXXXVII. SPECTROPHOTOMETRIC STUDIES ON THE FORMATION OF SOME RHENIUM COMPLEXES WITH α-SUBSTITUTED ALICYCLIC OXIME DERIVATIVES

The formation conditions, stability in acidic aqueous solutions (Re(IV) : oxime = 1 : 4) and the analytical application of some rhenium complexes with 1,2-cyclohexane dione dioxime and 1,2-cyclododecanedione dioxime and 1,2,3- cyclohexane trione dioxime (1,3) deriva- tives: -2-hydrazone, -2-semicarbazone, 2-thiosemicarbazone and -2-phenylhydrazone were studied. The spectrophotometric measurements were carried out in hydrochloric acid medium in the presence of tin(II) chloride as reducing agent