11 research outputs found
Thermally Stimulated Depolarization Current And Mössbauer Spectroscopy Of Iron-doped Niobophosphate Glasses
No full textNiobophosphate glasses (P2O5-PbO-Nb2O5-K2O-XFe2O3), were studied using thermally stimulated depolarization currents and Mössbauer spectroscopy in samples of different iron concentrations, and were subjected to oxidation and reduction processes. The use of both techniques provided new information about the distribution of iron and niobium between tetrahedral and octahedral sites. © 1993 Chapman & Hall.28164305431
Mineral chemistry and crystallization parameters of the A-type Paleoproterozoic Bannach Granite, Carajás Province, Pará, Brazil
No full textCan Bacillus thuringiensis affect the biological variables of natural enemies of Lepidoptera?
No full textCHEMICAL COMPOSITION AND TETRAZOLIUM TEST OF Syagrus romanzoffiana (Cham.) Glassman SEEDS
No full textImaturos de Culicidae (Diptera) encontrados em recipientes instalados em mata residual no munícipio de Londrina, Paraná, Brasil
No full textPetrography, geochemistry and geochronology of the potassic granitoids of the Rio Itacambiruçu Supersuite: implications for the Meso- to Neoarchean evolution of the Itacambira-Monte Azul block
No full textDialogical elements in Harris, Dewey, Cutter, Otlet, Kaiser, and Ranganathan: Theoretical convergences in the history of Knowledge Organization
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