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Effect of cobalt(II) oxide and manganese(IV) oxide on sintering of tin(IV) oxide
(1996-03-01)
Additions of 0.5 to 2.0 mol% of CoO or MnO2 onto SnO, promote densification of this oxide up to 99% of theoretical density. The temperature of the maximum shrinkage rate (TM) and the relative density in the maximum ...
Effect of cobalt(II) oxide and manganese(IV) oxide on sintering of tin(IV) oxide
(1996-03-01)
Additions of 0.5 to 2.0 mol% of CoO or MnO2 onto SnO, promote densification of this oxide up to 99% of theoretical density. The temperature of the maximum shrinkage rate (TM) and the relative density in the maximum ...
Enhanced luminescence of Tb3+/Eu3+ doped tellurium oxide glass containing silver nanostructures
(American Institute of Physics (AIP), 2009-05-15)
We report on energy transfer studies in terbium (Tb3+)-europium (Eu3+) doped TeO2-ZnO-Na2O-PbO glass containing silver nanostructures. The samples excitation was made using ultraviolet radiation at 355 nm. Luminescence ...
Enhanced luminescence of Tb3+/Eu3+ doped tellurium oxide glass containing silver nanostructures
(American Institute of Physics (AIP), 2009-05-15)
We report on energy transfer studies in terbium (Tb3+)-europium (Eu3+) doped TeO2-ZnO-Na2O-PbO glass containing silver nanostructures. The samples excitation was made using ultraviolet radiation at 355 nm. Luminescence ...
Antioxidant Activity of Phenolic Compounds in Ethanolic Extract of Hibiscus sabdariffa L. on Oxidative Stability of Soybean Oil
(2021-12-01)
Background: The current interest in natural antioxidants from vegetable sources, mainly in bioactive antioxidants, has been increasing in Brazil. The Hibiscus sabdariffa L. is rich in bioac-tive compounds, besides having ...