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Rietveld method in the analysis of polymorphism in mebendazole tablets acquired in Brazil's drugstores
(2015-09-01)
Mebendazole (MBZ) is an anthelmintic medicine known to exhibit the polymorphs A, B and C, where polymorph C is the one indicated for tablets. Mebendazole commercial tablets (references, generics and similars) were analyzed ...
Quantitative Phase Analyses Through The Rietveld Method with X-Ray Powder Diffraction Data of Heat-Treated Carbamazepine Form III
(Wiley-Blackwell, 2011-07-01)
The present work shows that the heated carbamazepine (CBZ) powder form III can be described as purely triclinic form I or a mixture of triclinic form I and monoclinic form III, depending on the resolution of the X-ray ...
Caracterização estrutural da cerâmica Ti x(Sm0,2Ce0,8)1-xO 2-delta pelo método de Rietveld
(Associação Brasileira de Cerâmica, 2007-06-01)
O método precursor polimérico foi aplicado para a síntese de pós de Ti x(Sm0,2Ce0,8)1 xO2-delta, com 0 < x < 0,5, com tratamento nas temperaturas de 400 ºC, 700 ºC e 1000 ºC. A caracterização foi feita por difração de raios ...
Comparação de procedimentos de quantificação de caulinita e gibbsita na fração argila desferrificada de Latossolos
(Sociedade Brasileira de Ciência do Solo, 2008)
A acurada determinação dos teores dos minerais que constituem a fração argila dos Latossolos pode contribuir para o aprimoramento de seu uso e manejo. Neste trabalho, teores de caulinita e gibbsita da fração argila ...
Rietveld refinements of SnO(2) ceramic powders doped with ZnO, WO(3), CoO, Nb(2)O(5) and MoO(3)
(Oldenbourg Verlag, 2007-01-01)
Polycrystalline materials of SnO(2) doped with ZnO, WO(3), CoO, Nb(2)O(5), and MoO(3). were synthesized by solid state reaction. X-ray powder diffraction data were collected with Cu K(alpha) radiation from a Rigaku-Rint ...
The Rietveld method applied to quantitative phase analysis of minerals containing disordered structures
(Servicio Nacional de Geología y Minería (SERNAGEOMIN), 2003)
Characterization of nickel doped Zn7Sb2O12 spinel phase using Rietveld refinement
(J C P D S-int Centre Diffraction Data, 2003-09-01)
Zn7Sb2O12 is known to adopt an inverse spinel crystal structure, in which Zn2+ occupies the eight tetrahedral positions and Sb5+ and Zn2+ randomly occupy the 16 octahedral positions. Samples of Zn7-xNixSb2O12 (X = 0, 1, ...
Quantitative analysis of aluminum dross by the Rietveld method
(JAPAN INST METALS, 2008)
Aluminum white dross is a valuable material principally due to its high metallic aluminum content. The aim of this work is to develop a method for quantitative analysis of aluminum white dross with high accuracy. Initially, ...
Método de Rietveld para el estudio de estructuras cristalinas
(Universidad Nacional de Ingeniería, 2019)
Método de Rietveld para el estudio de estructuras cristalinas
(Universidad Nacional de Ingeniería, 2019)