Exemplos de uso de Rietveld method em Inglês e suas traduções para o Português
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The xrd patterns were refined using the rietveld method for pure l and b phase.
The formation of mullite from this mixture(3al2o3.2sio2)was characterized using quantification of phases by the rietveld method.
X-ray diffraction with Rietveld method applied to bauxites of Porto Trombetas.
The compounds prepared were structurally characterized by x-ray diffractometry,refining the diffractograms by the rietveld method.
The xrd patterns were refined by the rietveld method, whereby the lattice parameters and the unit cell volume were obtained.
Spectroscopic and microscopic techniques, thermal analysis andx-ray diffraction with the rietveld method were employed.
The x-ray diffraction patterns obtained were analyzed by rietveld method, which enabled the identification of the crystalline struc.
Basically, the Rietveld method is using analytical profile functions and least-squares algorithms to fit a theoretical to a measured pattern.
Their properties were studied using x-ray diffraction, rietveld method and raman spectroscopy.
The sintered samples were analyzed by x-ray diffraction, with the adjustment of the diffraction peaks andthe formed phases quantified by rietveld method.
Xrd measurement andquantification phases via rietveld method indicated no austenite these conditions.
After 4 h of milling, the measured x-ray diffraction pattern shows the nucleation of a nanostructured tetragonal cu2sb phase,the structural parameters were refined by rietveld method using gsas package.
X-ray diffraction(xrd) measurements by rietveld method confirm the desired crystallographic phase for all studied samples.
The ssr obtained pigments were not submitted to mössbauer spectroscopy and the rietveld method structural refinement analyses.
X-ray diffractometry(xrd), which data were analyzed by the rietveld method, revealed the presence of the w, z, and y-phases in mean molar ratios of 66%, 22%, and 10%, respectively.
The ores were characterized by scanning electron microscopy, x-ray diffraction,phase quantification by rietveld method and particle size distribution.
The rietveld method is used in the refinement of the materials crystalline structures in the powder form and in the phases quantification based on the x-ray or neutrons information.
The structural parameters of the investigated systems were determined by the refinement using the rietveld method, considering the space group pm m. from the determination of the crystallographic parameter was build the of uni.
The rietveld method has been used in soil studies, however, there are some disputes about the reliability of results in soils through mineralogical quantification using x-ray diffraction in general.
The powders were characterized by determination of specific surface area by the method(bet), x-ray diffraction(xrd),refinement of xrd data by the rietveld method and vibrating sample magnetometry mav.
These days, the Rietveld method is not only used for structure analysis, but also for the quantification of multi-phase mixtures and the determination of the crystallite microstructure which covers size and strain.
The modified titanium(tm) oxides and unmodified(tn)were characterized by the techniques of x-ray diffraction(xrd)and refinement by the rietveld method, transmission electron microscopy(tem) and determination of specific surface area.
The techniques of x-ray diffraction(xrd),with refinement by the rietveld method, x-ray fluorescence(xrf), nitrogen absorption in 77k(bet), uv-vis diffuse reflectance spectroscopy(drs) and scanning electron microscopy(sem) were used f.
Differential thermal analysis, thermogravimetry, scanning eletron microscopy, spectrometry of dispersion in wavelength andX rays diffraction, associate to the Rietveld method, had been used for characterization of the samples of flour and clinker.
The basics of the Rietveld method were published in the late 1960Ấs, when the Dutch crystallographer Hugo Rietveld presented computer based analytical procedures making use of a complete powder diffraction pattern recorded with neutrons.
The merged and treated samples were analyzed by optical metallography, scanning with eds compositional analysis via electron microscopy,x-ray diffraction(rietveld method), differential scanning calorimetry and magnetization as a function of temperature and applied field.
The obtained materials were characterized by x-ray diffraction, scanning and transmission electron microscopy, x-ray dispersive energy spectroscopy, electrons diffracton, inductively coupled plasma-atomic emission spectroscopy, cyclic voltammetry, thermogravimetry,structural refinement by rietveld method and chronopotentiometry.
To adequate analysis of these solids ingredients,some methods using drxp data are recommended: rietveld method(rm), le bail method(mlb), pawley method(pm) and the ponkcs method(partial or no known crystal structure) which is based on rm.
The characterization of the material obtained was performed by simultaneous thermal analysis techniques(tg, dtg, dta), x-ray diffraction(xrd),structural refinement by the rietveld method(remr), scanning electron microscopy(eds) and semi-quantitative analysis by x-ray energy mev.
The structural characterization andmorphological was done by using x-ray diffraction techniques, rietveld method, micro-raman spectroscopy, infrared region¿s spectroscopy techniques, field emission¿s electronic microscopy(feg) and atomic force microscopy afm.