In this paper, calcium stannate nanoparticles were synthesized by a fast and simple co-precipitation procedure. For CaSnO3 preparation ammonia was used as precipitation agent. The effect of various surfactants such as cationic, anionic and neutral on the morphology of the products was investigated. By changing in Ca(Sal)2 as a new precursor different morphologies were obtained. Ligand as a capp...

From a frontal telerradiographies sample of 50 adult individuals, this work evaluated if differences exist among the rnedium values linear and angular skeletal measurements obtained manually through computer programs SMTC, OrtoView, Radiocef Orto Manager. On cach x-ray manual Ricketts frontograrñ was accomplished marked points for one programs. The in each five methods used were tabulated studi...

Este artigo busca descrever e analisar a grafia dos dígrafos do sistema ortográfico português brasileiro (PB) por crianças anos iniciais Ensino Fundamental. Para tanto, o erro (orto)gráfico é tido como objeto principal de análise, sendo discutido considerando-se um tratamento qualitativo quantitativo-descritivo, segundo as variáveis tipo escola (pública particular), série, dígrafo natureza erro...