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pro vyhledávání: '"A.C. Neiva"'
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Publikováno v:
Radiation Physics and Chemistry. 95:368-372
Ores, pig iron and steel pieces from the XIX Century ironworks Royal St. John of Ipanema Iron Foundry (Real Fabrica de Ferro Sao Joao do Ipanema), in Ipero, Brazil, were analyzed by Energy-Dispersive X-Ray Fluorescence (EDXRF) spectroscopy, with the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99f7f10fbb54868eee49a2f658328039
https://doi.org/10.1016/j.radphyschem.2013.03.015
https://doi.org/10.1016/j.radphyschem.2013.03.015
Autor:
E.A.M. Kajiya, P.A.D. Almeida, P.H.O.V. Campos, H.P.F. Pinto, Marcia de Almeida Rizzutto, A.C. Neiva
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Non-destructive analyses, such as EDXRF (Energy-Dispersive X-Ray Fluorescence) spectroscopy, and imaging were used to characterize easel paintings. The analyzed objects are from the collection of the Pinacoteca do Estado de Sao Paulo. EDXRF results a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6aef8ca08d77d0f7cde35b6cac18e3a
https://doi.org/10.1016/j.radphyschem.2013.05.029
https://doi.org/10.1016/j.radphyschem.2013.05.029
Autor:
Marli Aparecida Marcondes, Herbert Prince Favero Pinto, Paula Aline Durães Almeida, A.C. Neiva
Publikováno v:
Radiation Physics and Chemistry. 95:378-380
A collection of Brazilian family photographs and photo-paintings from the beginning of the XX Century was analyzed by portable EDXRF (Energy-Dispersive X-Ray Fluorescence) spectroscopy. The spectrometer uses a Si-drift Amptek detector and an Oxford C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1458c3150fa519eeddaa2d7ff6aac0d4
https://doi.org/10.1016/j.radphyschem.2013.03.028
https://doi.org/10.1016/j.radphyschem.2013.03.028
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Effects of titanium carbide (TiC) addition on structural and magnetic properties of isotropic (Pr,Nd)–Fe-B nanocrystalline magnetic materials have been investigated. In this work, we investigate the effect of TiC addition on a (Pr,Nd)-poor and B-ri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6fce3966b46e95ab4d892d143c4e19ed
https://doi.org/10.1016/j.jmmm.2008.02.150
https://doi.org/10.1016/j.jmmm.2008.02.150
Autor:
S.A. Romero, Frank P. Missell, Hercílio R. Rechenberg, A.C. Neiva, J. Trota Filho, Marcos Flavio de Campos, Leandro Reis Lidizio
Publikováno v:
Materials Science Forum. :158-163
Sm(CoFeCuZr)z commercial magnets are manufactured by powder metallurgy techniques. Microstructural investigations of Sm(CoFeCuZr)z magnets have shown that, increasing the Zr content, some impurity phases may appear. An alloy with composition (at%): 6
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b3f330391fbf7527e3c45bba5d176bb
https://doi.org/10.4028/www.scientific.net/msf.530-531.158
https://doi.org/10.4028/www.scientific.net/msf.530-531.158
Publikováno v:
Journal of Alloys and Compounds. 403:329-334
Isotropic magnets were produced from cast alloys with composition Sm(Co bal Fe 0.2 Cu 0.1 Zr x ) 8 ( x = 0, 0.02, 0.04, 0.06 and 0.08). They were homogenized for 4 h at 1175 °C and then quenched into water. An isothermal treatment for 7 h at 820 °C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::499e729f377dc384c444d8f4b6c3bfc3
https://doi.org/10.1016/j.jallcom.2005.05.007
https://doi.org/10.1016/j.jallcom.2005.05.007
Autor:
J.F. Curado, Hercílio Gomes de Melo, Manfredo Harri Tabacniks, Marcia de Almeida Rizzutto, S.C. Lima, A.C. Neiva, Marcel Dupret Lopes Barbosa, W.A. Santos, Nemitala Added
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 240:549-553
To open new possibilities in nuclear applied physics research, mainly for the analysis of art objects in air, an external beam facility was installed at LAMFI (Laboratorio de Analise de Materiais por Feixes Ionicos) of University of Sao Paulo. PIXE m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aece65401ea3716a209ce05d76e2a269
https://doi.org/10.1016/j.nimb.2005.06.153
https://doi.org/10.1016/j.nimb.2005.06.153
Autor:
A.C. Neiva, M.F. de Campos, Daniel Rodrigues, Hideyuki Okumura, George C. Hadjipanayis, S.A. Romero, Frank P. Missell, Fernando José Gomes Landgraf
Publikováno v:
Journal of Alloys and Compounds. 368:304-307
SmCo5 samples were investigated under the following conditions: ‘as-sintered’ at 1150 ◦ C (low coercivity—0.1–0.5 T), heat-treated at 850–880 ◦ C (coercivity ∼2.5–3.0 T) and after heat treatment at 750 ◦ C during 25 days (low coer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66641e296ad9e1839123f3dcf44a93c3
https://doi.org/10.1016/s0925-8388(03)00671-6
https://doi.org/10.1016/s0925-8388(03)00671-6
Publikováno v:
Materials Science Forum. :284-288
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b85385f146289da5d78e3a9d1045b2b
https://doi.org/10.4028/www.scientific.net/msf.302-303.284
https://doi.org/10.4028/www.scientific.net/msf.302-303.284