art fnafreire structural and

Figure 1 shows the X-ray diffraction patterns of the samples prepared from refluxing (R1) and sonochemical (S1) methods. All the diffraction peaks in the X-ray diffraction

No caminho de volta, Marx procura situar a parte (a produção social, por exemplo) no todo (o modo de produção capitalista). Este procedimento é um ato inverso ao realizado

X-ray diffraction patterns of the GR2 samples 1, 2 and 3 (a), (b) and (c) after air exposure: sample without nickel; sample prepared by coprecipitation of Ni(II), Fe(II) and

Mӧssbauer spectroscopy, X-ray diffraction and hardness measurements were used to investigate the atomic redistribution and phase transformation of solution-treated and 440°C

X-ray diffraction and Mo¨ssbauer spectroscopy measurements reveal a small amount of an undissolved paramagnetic phase in the sample with the higher Cr-equivalent content while the

The analysis by X-ray diffraction showed the presence of diffused and large peaks containing amorphous material due to the fact that in the amorphous state the

We conducted scanning electron microscopy, x-ray diffraction, and infrared spectroscopy analyses, which evidenced that the sample treated at 110°C contained calcium

X-ray diffraction is the most important single tool for bauxite characterisation, and the constrained refinement of the Al-for-Fe substitution in goethite during one-step