Results 31 to 40 of about 252,441 (277)
Introducing extra operations in refinement [PDF]
, 2014 This paper reconsiders refinements which introduce actions on the concrete level which were not present at the abstract level. It considers a range of different basic refinement relations, covering the standard ones for formalisms like Event-B, Z ...
Boiten, Eerke Albert
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Revista de Investigación de Física, 2021 The Rietveld refinement method has taken high relevance since its creation. Nowadays, it is an useful tool in many fields of industry, materials science, and technology.
Diego Alberto Flores Cano +5 more
doaj
Yankuang ceshi, 2019 BACKGROUND The content of minerals in kyanite can be analyzed by chemical phase method, but the analytical process is very tedious. Moreover, the existence of heteromorphism and refractory minerals can affect the accuracy of analysis results. An internal
RAN Jing +3 more
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Rietveld refinement, magnetic and dielectric properties of Sr2+-Co2+-doped Zn2Y-type hexaferrites
Hybrid Advances, 2023 In this experimental study, Sr2+-Co2+ was doped in Zn2Y-type hexaferrite to improve its magnetic and dielectric properties. Sol-gel auto combustion was used to synthesize Ba2-xSrxZn2-yCoyFe12O22 (x = 0.0, 0.4, 0.8 and y = 0.0, 0.5, 1.0), and the ...
Ibrahim Mohammed +3 more
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Relational Concurrent Refinement: Automata [PDF]
, 2009 Data refinement in a state-based language such as Z is defined using a relational model in terms of the behaviour of abstract programs. Downward and upward simulation conditions form a sound and jointly complete methodology to verify relational data ...
Derrick, John +4 more
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Crystal Structure Refinement of Synthetic Pure Gyrolite
Medžiagotyra, 2015 Pure calcium silicate hydrate – gyrolite was prepared under the saturated steam pressure at 473 K temperature in rotating autoclave. The crystal structure of synthetic gyrolite was investigated by X-ray diffraction and refined using Le Bail, Rietveld and
Arūnas Baltušnikas +5 more
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Journal of Research of the National Institute of Standards and Technology, 2004 Global optimisation methods of structure determination from powder diffraction data have risen to prominence in a relatively short space of time and they now constitute a key approach in the examination of polycrystalline molecular organic materials. A correctly formulated global optimisation approach may be regarded as a "global Rietveld refinement ...
openaire +2 more sources
Perspicuity and Granularity in Refinement [PDF]
, 2011 This paper reconsiders refinements which introduce actions on the concrete level which were not present at the abstract level. It draws a distinction between concrete actions which are ''perspicuous'' at the abstract level, and changes of granularity of ...
Eerke Boiten, Boiten, Eerke Albert
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Journal of Magnesium and Alloys, 2023 A new ternary compound, Mg11-xZnxSr in the Mg-Zn-Sr system was observed and studied using Scanning Electron Microscopy (SEM), Energy-Dispersive Spectroscope (EDS), X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM).
Jian Wang +7 more
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Heavily Boron Doped Diamond Powder: Synthesis and Rietveld Refinement
Crystals, 2018 Boron-doped diamonds were synthesized by the reaction of an amorphous globular carbon powder (80%) with a powder of 1,7-di (oxymethyl)-M-carborane (20%) in a ‘toroid’-type high-pressure chamber at a pressure of 8.0 GPa and temperature of 1700
Igor P. Zibrov, Vladimir P. Filonenko
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