The thermal decomposition of monohydrated ammonium oxotris (oxalate) niobate (2006)
Medeiros,F. F. P., Moura,M. F. V., Souza,C. P., Gomes,K. K. P., Gomes,U. U.
The thermal decomposition in argon of the monohydrated ammonium tris(oxalate)niobate, (NH4)3NbO(C2O4)3.H 2O, has been studied by TG/DTG, DTA, DSC, IR absorption and XRD. The material decomposes...
Occurrence of Struthiopterolichus bicaudatus (Acari; Pterolichidae) in Southeastern Brazil (2006)
Faccini,J.L.H., Verocai,G.G., Lopes,L.N., Souza,C.P.
A ocorrência de Struthiopterolichus bicaudatus é assinalada em uma criação de avestruz no estado de Minas Gerais. Os principais sinais associados com a presença dos ácaros foram penas quebradas...
DEFECT ANALYSIS IN NATURAL QUARTZ FROM BRAZILIAN SITES FOR IONISING RADIATION DOSIMETRY (2006)
Guzzo, P. L., Khoury, H. J., Souza, C. P., Souza, A. M., Schwartz, M. O. E., Azevedo, W. M.
The impurity-related point defects and the dosimetry properties of quartz irradiated with gamma- and X-rays doses were investigated for natural crystals taken from different geologies. The specimens...
Niobium carbide synthesis by solid-gas reaction using a rotating cylinder reactor (2004)
Fontes,F. A. O., Gomes,K. K. P., Oliveira,S. A., Souza,C. P., Sousa,J. F.
A rotating cylinder reactor was designed for the synthesis of niobium carbide powders at 1173 K. Niobium carbide, NbC, was prepared by carbothermal reduction starting from commercial niobium...
BIPARENTAL MITOCHONDRIAL DNA INHERITANCE IN THE PARASITIC TREMATODE SCHISTOSOMA MANSONI (2001)
The maternal inheritance of mitochondrial DNA (mtDNA) in eukaryotic organisms occurs because of the selective destruction of paternal mtDNA molecules that may be present in the zygote. The...
PREPARATION OF TANTALUM CARBIDE FROM AN ORGANOMETALLIC PRECURSOR (1999)
SOUZA,C. P., FAVOTTO,C., SATRE,P., L' HONORÉ,A., ROUBIN,M.
In this work we have synthesized an organometallic oxalic precursor from tantalum oxide. This oxide was solubilized by heating with potassium hydrogen sulfate. In order to precipitate Ta2O5.nH2O, the...