Zobrazeno 1 - 10
of 129
pro vyhledávání: '"A.G. Leyva"'
Publikováno v:
Chemical Engineering Transactions, Vol 47 (2016)
In this work, the removal efficiency of U(VI) from water using commercial nanoparticles of zerovalent iron (nZVI) (NANOFER 25, NANO IRON s.r.o.) and magnetite (nM) (NanoFe®, Nanotek SA) was evaluated. Batch experiments were carried out in a jacketed
Externí odkaz:
https://doaj.org/article/edfc5816e004413799967f3c70f02a8a
Autor:
M.A. Paulin, G. Alejandro, D.G. Lamas, M. Quintero, R.O. Fuentes, J.E. Gayone, A. Butera, A.G. Leyva, J. Sacanell
Publikováno v:
Ceramics International. 49:5146-5153
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::767558c67260da61f364ebd7db3db12d
https://doi.org/10.1016/j.ceramint.2022.10.031
https://doi.org/10.1016/j.ceramint.2022.10.031
Publikováno v:
Solid State Ionics. 347:115239
LnBaCo2O6-δ (Ln = lanthanide) are prospective materials for oxygen separation membranes. These materials show high rates of oxygen surface exchange and diffusivity, and high electrical conductivity. In this work, the La0.5-xPrxBa0.5CoO3-δ system (0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3e4217429d5071d9df6c0e4dae16a34
https://doi.org/10.1016/j.ssi.2020.115239
https://doi.org/10.1016/j.ssi.2020.115239
Autor:
A.G. Leyva, M. B. Fernández van Raap, Leandro M. Socolovsky, P. Mendoza Zélis, Francisco H. Sánchez
Publikováno v:
Physica B: Condensed Matter. 407:3113-3116
Magnetic hydrophobic aerogels (MHA) in the form of nanocomposites of silica and maghemite (g-Fe2O3) were prepared by one step sol–gel procedure followed by supercritical solvent extraction. Silica alcogels were obtained from TEOS, MTMS, methanol an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5784b86251b6bfa0923f5f5c30d9c4d0
https://doi.org/10.1016/j.physb.2011.12.039
https://doi.org/10.1016/j.physb.2011.12.039
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Publikováno v:
Physica B: Condensed Matter. 407:3165-3167
When a uniaxial magnetic field is applied to a non-magnetic dispersive medium filled with magnetic nanoparticles, they auto-assemble into thin needles parallel to the field direction, due to the strong dipolar interaction among them. We have prepared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::54189806779d9203f5053b0c9064e2bd
https://doi.org/10.1016/j.physb.2011.12.054
https://doi.org/10.1016/j.physb.2011.12.054
Publikováno v:
Physica B: Condensed Matter. 320:47-50
Ceramic samples of Ca1−xYxMnO3 were synthesized by a liquid-mix method obtaining single phase materials, for 0.1⩽x⩽1, with orthorhombic structure. The cell volume increases with x indicating that changes in the Mn electronic state overcomes the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80443a5d760bf744f2b6b98eba7e03c6
https://doi.org/10.1016/s0921-4526(02)00617-8
https://doi.org/10.1016/s0921-4526(02)00617-8
Publikováno v:
Journal of Nuclear Materials. 303:29-33
(U,Gd)O2 sintered pellets are fabricated by different methods. The homogeneity characterisation of the Gd content seems to be necessary for a production control to qualify the process and the final product obtained. In this paper, we propose an analy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe123f69f1606911c68d5ce048e5dcf9
https://doi.org/10.1016/s0022-3115(02)00819-x
https://doi.org/10.1016/s0022-3115(02)00819-x
Autor:
I. Guedes, Carlos William de Araujo Paschoal, P. K. Perazzo, A.G. Leyva, Griselda Polla, Daniel Vega, M. R. Moura, Alejandro Ayala
Publikováno v:
Journal of Raman Spectroscopy. 33:273-277
The Raman spectra of isostructural compounds CuxM1−x(HCOO)2·2H2O (M = Mn, Co, Ni, Zn, and Cd) at room temperature are presented. The phonons observed were assigned on the basis of formate and water group vibrations and correlations with previous d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f01618603db748712468176d858bee6a
https://doi.org/10.1002/jrs.849
https://doi.org/10.1002/jrs.849
Autor:
Daniel Vega, P. K. Perazzo, A.G. Leyva, J. Mendes Filho, I. Guedes, Alejandro Ayala, Paulo Freire, Francisco Melo, Carlos William de Araujo Paschoal, Griselda Polla
Publikováno v:
Journal of Raman Spectroscopy. 33:37-41
The monoclinic–orthorhombic phase transition in Ba2Cu(HCOO)6 crystals, which takes place when the temperature is raised from 300 to 317 K, was analysed in the light of Raman scattering measurements. The disappearance of two modes related to HCOO vi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1549d052e2d6dabb63149407e78b10a
https://doi.org/10.1002/jrs.808
https://doi.org/10.1002/jrs.808