IARA MARIA CARNEIRO DE CAMARGO BIGNARDI
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Artigo IPEN-doc 22766 A Brazilian coal fly ash as a potential source of rare earth elements2017 - LANGE, CAMILA N.; CAMARGO, IARA M.C.; FIGUEIREDO, ANA MARIA G.M.; CASTRO, LILIANA; VASCONCELLOS, MARINA B.A.; TICIANELLI, REGINA B.Rare earth elements (REEs) have several applications and their market demands have increased. Recently, coal fly ash (CFA) has been considered as a source of these elements. The purpose of this study was to evaluate the REEs content in a CFA from a Brazilian coal power plant by instrumental neutron analysis, to classify it according to commercial purposes and to assess the weathering impact in the REEs content, since it is held in fields nearby the power plant. The results pointed no significant REEs leachability and indicated this CFA as a promising REEs source.Resumo IPEN-doc 22493 Rare earth elements content and leachability in coal fly ash from figueira coal power plant2016 - LANGE, CAMILA N.; VASCONCELLOS, MARINA B.A.; FIGUEIREDO, ANA M.G.; CAMARGO, IARA M.C. de; CASTRO, LILIANA; TICIANELLI, REGINA B.Resumo IPEN-doc 05078 A comparative study of bristle materials of toothbrushes by radiometric method and electronic microscopy analysis1997 - CAMARGO, I.M.C.; SAIKI, M.; VASCONCELLOS, M.B.A.; MORAIS, C.V.; COUTO, A.A.; SIMIONATO, L.; RANGEL, F.Resumo IPEN-doc 00448 Aplicacao do metodo radiometrico a avaliacao da abrasividade de amostras de silica e carbonato de calcio1997 - CAMARGO, I.M.C.; SAIKI, M.; VASCONCELLOS, M.B.A.; AVILA, D.M.Artigo IPEN-doc 06855 Evaluation of the precision in the dentifrice abrasivity measurements obtained by a radiotracer method2000 - CAMARGO, I.M.C.; ZOPPE, C.C.C.; SAIKI, M.; VASCONCELLOS, M.B.A.The radiotracer method was applied to evaluate the precision of the measurements of abrasivity data obtained for dentifrice samples and for abrasive agents (silica and calcium carbonate). This method consists of measuring 32P transferred to a dentifrice or abrasive slurry when an irradiated dentin is submitted to a brushing simulation. Results obtained for abrasivity indices had good precision with relative standard deviations lower than 11.8%. Comparisons made between our abrasivity index data with those obtained at the Oral Health Research Institute of Indiana University also showed a good agreement.Artigo IPEN-doc 03704 Determinacao de indices de abrasividade de dentifricios pelo metodo radiometrico1996 - CAMARGO, I.M.C.; SAIKI, M.; AVILA, D.M.; VASCONCELLOS, M.B.A.; PANZERI, H.; LARA, E.H.G.Artigo IPEN-doc 04934 Determinacao da abrasividade de dentifricios em dentina e esmalte de dentes humanos1997 - CAMARGO, I.M.C.; SAIKI, M.; VASCONCELLOS, M.B.A.Artigo IPEN-doc 02823 Application of radiometric method to the evaluation of dentifrice abrasivity1996 - SAIKI, M.; CAMARGO, I.M.C.; VASCONCELLOS, M.B.A.; PANZERI, H.; LARA, E.H.G.Artigo IPEN-doc 07146 Abrasiveness evaluation of silica and calcium carbonate used in the production of dentifrices2001 - CAMARGO, I.M.C.; SAIKI, M.; VASCONCELLOS, M.B.A.; AVILA, D.M.Artigo IPEN-doc 07141 Evaluation of the precision in the dentifrice abrasivity measurements obtained by a radiotracer method2001 - CAMARGO, I.M.C.; ZOPPE, C.C.C.; SAIKI, M.; VASCONCELLOS, M.B.A.