Results 21 to 30 of about 18,381 (288)

Efficient Pb (II) removal from wastewater by TEG coated Fe3O4 ferrofluid [PDF]

open access: yesJournal of Water and Environmental Nanotechnology, 2021
Tri-ethylene glycol (TEG) coated Fe3O4 nanoparticles ferrofluid were used for Pb (II) removal from simulated wastewater. The samples were synthesized using a modified co-precipitation method.
Sajjad Lotfi   +2 more
doaj   +1 more source

Application of Evolutionary Rietveld Method Based XRD Phase Analysis and a Self-Configuring Genetic Algorithm to the Inspection of Electrolyte Composition in Aluminum Electrolysis Baths

open access: yesCrystals, 2018
The technological inspection of the electrolyte composition in aluminum production is performed using calibration X-ray quantitative phase analysis (QPA).
Igor Yakimov   +8 more
doaj   +1 more source

Diffraction Line Profiles in the Rietveld Method [PDF]

open access: yesCrystal Growth & Design, 2020
The present work traces the evolution of the modeling of the diffraction line profiles in the Rietveld method, starting from the early and most schematic description with Gaussian curves to the mos...
openaire   +3 more sources

Influência do método de síntese na obtenção de pós de Na2TiSiO5 Influence of the synthesis method to obtain Na2TiSiO5 powders

open access: yesCerâmica, 2005
Este trabalho apresenta um estudo sistemático sobre a síntese e caracterização de pós de Na2TiSiO5. Foram estudadas as propriedades estruturais e morfológicas dos pós por intermédio de difração de raios X, espectroscopia Raman e microscopia eletrônica de
V. C. Albarici   +6 more
doaj   +1 more source

The Rietveld Method ? A Historical Perspective [PDF]

open access: yesAustralian Journal of Physics, 1988
differences between observed and calculated values was already well established in crystallography. From there it was, in retrospect, only a small step to refrain from using the integrated intensities as observed values but to use the actual measured profile intensities obtained by step scanning the powder diagram.
openaire   +1 more source

An insight into the thermal properties of struvite-k by Rietveld refinement method

open access: yesJournal of Materials Research and Technology, 2023
This work investigated the thermal properties of struvite-k (a main binding phase and a strength-giving mineral from the magnesium potassium phosphate cements) exposed to different conditions by Rietveld Refinement Method coupled with X-ray diffraction ...
Yang Yuanquan   +4 more
doaj   +1 more source

Comparação de procedimentos de quantificação de caulinita e gibbsita na fração argila desferrificada de Latossolos Comparison of procedures for quantification of kaolinite and gibbsite in iron-free clay in Latosols

open access: yesRevista 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.
Marcelo Eduardo Alves   +2 more
doaj   +1 more source

Structural studies into AM(_2)O(_7) framework materials and parametric Rietveld refinement [PDF]

open access: yes, 2006
This thesis investigates the structural properties of the AM2O7 family of materials, many of which show interesting thermal expansion properties and remarkably complex structures.
Stinton, Graham William
core  

Synthesis and crystal structure refinement by th Rietveld method of an antimony-bearing titanite Ca(Ti0.6Al0.2Sb0.2)OSiO4 [PDF]

open access: yes, 2009
A synthetic analogue, Ca(Ti0.6Al0.2Sb0.2)OSiO4, of antimony-bearing titanite of a composition similar to that found at St. Marcel-Praborna (Italy) was synthesized using ceramic methods and the crystal structure was refined using the Rietveld method. Unit-
Pannunzio Miner, Elisa Victoria   +1 more
core   +1 more source

Rietveld Refinement Analysis of Lampung Natural Zeolite Catalyst Impregnated Fe with Diffraction Method Using MAUD Software [PDF]

open access: yes, 2023
This research characterizes the space group and R-phase crystal structure using the XRD method and Rietveld refinement. Rietveld improvements using the Material Analysis Using Diffraction (MAUD) software are acceptable if the Rwp < 15% and Sig < 2%. MAUD
Navanti, Dovina; Environmental Engineering Department, Engineering of Faculty, Universitas Bhayangkara Jakarta Raya, 12550, Indonesia   +3 more
core   +1 more source

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