Zobrazeno 1 - 10
of 55
pro vyhledávání: '"C.M. Poffo"'
Autor:
Carlos Augusto Silva de Oliveira, C.M. Poffo, Hamilton Ferreira Gomes de Abreu, Ricardo Vilain de Melo
Publikováno v:
Repositório Institucional da Universidade Federal do Ceará (UFC)
Universidade Federal do Ceará (UFC)
instacron:UFC
Universidade Federal do Ceará (UFC)
instacron:UFC
A high Ti content maraging C300 steel was analyzed by X-ray diffraction measurements to study the effect of aging at 773 K for different treatment times by monitoring lattice parameter, microstrain, crystallite size and formation/dissolution of inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3350145c4df1aeafada2b7dd85501e32
https://doi.org/10.1007/s13632-020-00680-z
https://doi.org/10.1007/s13632-020-00680-z
Autor:
Américo Cruz Júnior, Wanison André Gil Pessoa, Diogo Machado Regis, Flávio Augusto de Freitas, C.M. Poffo, Lizandro Manzato, Z. V. Borges, Silma de Sá Barros
Publikováno v:
Research, Society and Development; Vol. 10 No. 10; e270101018836
Research, Society and Development; Vol. 10 Núm. 10; e270101018836
Research, Society and Development; v. 10 n. 10; e270101018836
Research, Society and Development
Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
Research, Society and Development; Vol. 10 Núm. 10; e270101018836
Research, Society and Development; v. 10 n. 10; e270101018836
Research, Society and Development
Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
Araucaria (Araucaria angustifolia) is a tree species found in the Southeast and South of Brazil. It is also known as Brazilian pine, presenting fruits of high acceptance. However, its processing generates by-products that are little used. Thus, this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e7017ea3137e7e065ed30b1ad51718f
https://rsdjournal.org/index.php/rsd/article/view/18836
https://rsdjournal.org/index.php/rsd/article/view/18836
Autor:
Kaoma Betega, João Batista Rodrigues Neto, Dachamir Hotza, Marcela Sagrilo Frizzo, Gilberto S. Falk, C.M. Poffo
Publikováno v:
Journal of Nanoparticle Research. 23
In this work, highly homogeneous TiO2 quantum dots (QDs) were synthesized and evaluated about their adsorption potential and applied as photocatalysts for the degradation of reactive red azo dye (RR141). QDs were produced by a low-energy and eco-frie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e6be44ce573c4b2e4f487db88dc7a28
https://doi.org/10.1007/s11051-021-05237-x
https://doi.org/10.1007/s11051-021-05237-x
Autor:
Z. V. Borges, C.M. Poffo, J.C. de Lima, Daniela Menegon Trichês, Sérgio Michielon de Souza, R.S. de Biasi
Publikováno v:
Journal of Materials Science. 53:13451-13463
A nanostructured GeSb4Te7 (GST147) phase was produced by mechanical alloying (MA), starting from a mixture with nominal GeSb2Te4 composition of high-purity elemental Ge, Sb and Te powders. The effect of milling on z-coordinates of Wyckoff sites 2c an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca09cc5d489540119ee5c50656844d66
https://doi.org/10.1007/s10853-018-2614-8
https://doi.org/10.1007/s10853-018-2614-8
Autor:
P.B. Prates, Ailton da Silva Ferreira, Ronaldo Sergio de Biasi, João Cardoso de Lima, C.M. Poffo
Publikováno v:
Materials Research, Vol 20, Iss 4, Pp 1072-1081 (2017)
Materials Research v.20 n.4 2017
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 20, Issue: 4, Pages: 1072-1081, Published: 22 JUN 2017
Materials Research v.20 n.4 2017
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 20, Issue: 4, Pages: 1072-1081, Published: 22 JUN 2017
A nanostructured Cr11Ge19 phase was produced by mechanical alloying for 15 h. Decomposition occurred for larger milling times, yielding Cr, Ge, Cr2O3 and GeO2. According to the Cr-Ge phase diagram, the Cr11Ge19 phase is stable up to ≈ 928 oC, but,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fde1dcbc95aea348750cc12c62c35c92
https://doi.org/10.1590/1980-5373-mr-2016-0788
https://doi.org/10.1590/1980-5373-mr-2016-0788
Autor:
C.M. Poffo, Viviane Sampaio Santiago dos Santos, Mayka Schmitt, João Cardoso de Lima, Celso Peres Fernandes
Publikováno v:
Engineering Geology. 220:183-195
Photoacoustic spectrometry (PAS) was used to determine thermal diffusivity and porosity of three sealing caprocks originating from oil and gas fields in Brazil. In the petroleum industry developments in the low permeability rocks characterization are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a89255ab36606a5d3acf969f547c8131
https://doi.org/10.1016/j.enggeo.2017.02.003
https://doi.org/10.1016/j.enggeo.2017.02.003
Autor:
C.M. Poffo, R.S. de Biasi, Daniela Menegon Trichês, J.C. de Lima, T.P.O. Nogueira, Lizandro Manzato, Z.V. Borges, S. M. de Souza
Publikováno v:
Materials Chemistry and Physics. 169:47-54
A nanostructured SnSe 2 phase was successfully produced by mechanical alloying. The influence of defect centers on the structural, optical and photoacoustic properties of the alloy was investigated by annealing the as-milled SnSe 2 powder. From optic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9622e7f17e9c1e23297a4573e44e1137
https://doi.org/10.1016/j.matchemphys.2015.11.026
https://doi.org/10.1016/j.matchemphys.2015.11.026
Autor:
H.O. Frota, Madson Cantuário de Assunção, Marta Silva dos Santos Gusmao, C.M. Poffo, Sérgio Michielon de Souza, João Cardoso de Lima, Daniela Menegon Trichês
Publikováno v:
Materials Letters. 199:110-112
Mechanical alloying of elemental Cu and Sb powders yielded nanostructured Cu 2 Sb. Structural, thermal and optical properties were studied using X-ray diffraction, photoacoustic and Raman spectroscopies. The positions of the expected Raman active mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba3d5bce98b29741eb50ee9f7daefa84
https://doi.org/10.1016/j.matlet.2017.04.070
https://doi.org/10.1016/j.matlet.2017.04.070
Autor:
Sérgio Michielon de Souza, Claudio Natalio Lima, Daniela Menegon Trichês, Gleison Adriano da Silva, C.M. Poffo, João Cardoso de Lima
Publikováno v:
International Journal of Materials Research. 106:503-508
A nanostructured composite powder formed from 75 wt.% NiSb and 25 wt.% Sb was obtained by mechanical alloying binary mixtures of elemental Ni and Sb powders in the composition NiSb2 for 39 hours. The structural evolution was followed by X-ray diffrac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a849f47e7f5304f9d257d5b33bf8ec45
https://doi.org/10.3139/146.111211
https://doi.org/10.3139/146.111211
Autor:
Daniela Menegon Trichês, Z. V. Borges, Ronaldo Sergio de Biasi, João Cardoso de Lima, C.M. Poffo, Sérgio Michielon de Souza
Publikováno v:
Materials Research v.21 n.4 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 21, Iss 4 (2018)
Materials Research, Volume: 21, Issue: 4, Article number: e20171077, Published: 07 JUN 2018
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 21, Iss 4 (2018)
Materials Research, Volume: 21, Issue: 4, Article number: e20171077, Published: 07 JUN 2018
A nanostructured SnTe phase was produced by mechanical alloying after 2 h of milling. Part of the as-milled powder was annealed and its X-ray diffraction (XRD) pattern was recorded. The XRD patterns of the as-milled and annealed samples were refined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0389b3e1adc9fd2362e68ddd245c4364
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000400228
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000400228