Titlebook: LACAME 2006; Proceedings of the 1 C. Larica,R. C. Mercader,J. R. Gancedo Conference proceedings 2009 Springer-Verlag Berlin Heidelberg 2009

cocoon

Multivariate analysis in provenance studies: Cerrillos obsidians case, Peru,los archaeological site, located in the Upper Ica Valley, Peru, is the only Paracas ceremonial center excavated so far. The archaeological data collected suggest the existence of a complex social and economic organization on the south coast of Peru. Provenance research of obsidian provides valuable

caldron

储备

Iron-containing pyrochlores: structural and magnetic characterization,tion of precursor oxides. The compounds were structurally and magnetically characterized by X-ray diffraction, Mössbauer spectroscopy and magnetic measurements. The results revealed that the crystallographic structures and magnetic properties depend, basically, on the type of B atoms.

GUILE

,Study of the effect of Mn and Cu in Fe–Mn–Al–C–Cu alloys by ICEMS and XRD,s B), 0.500 ≤ . ≤ 0.800, in steps of 0.050 is presented and discussed. The analysis was performed by integral conversion electrons Mössbauer spectrometry and X-ray diffraction at room temperature. The results suggest, for both series of alloys, that for the highest Mn content, samples exhibit an ant

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,Mössbauer investigation of maghemite-based glycolic acid nanocomposite,c nanoparticles dispersed in a glycolic acid-based template. Maghemite nanoparticles were identified as the iron oxide phase dispersed in the polymeric template. From the low-temperature Mössbauer data the amount of the iron-based, non-magnetic material at the nanoparticle surface was estimated as r

hieroglyphic

损坏

,Provenance study of obsidians from the archaeological site of La Maná (Ecuador) by electron spin re last technique allows to discriminate obsidians from the Quiscatola source, an association of ESR with SQUID magnetometry permits to differentiate obsidians from the sources of Cotopaxi volcano, from the Quiscatola and Mullumica-Callejones sources of the Chacana caldera and to infer that the 12 ana

债务

,Mössbauer investigation of magnetite nanoparticles incorporated in a mesoporous polymeric template,heres as the hosting template. The magnetite content was increased in the polymeric template by performing several . chemical reactions (one to six cycles) in the hosting material. We found the Mössbauer linewidth associated to site-A increasing with the relative increase of iron in site-A. The Möss

BADGE

蜈蚣

Structural, magnetic and hyperfine characterization of zinc-substituted magnetites,ty and Mössbauer spectroscopy. The results showed that, for . ≤ 0.15, the as-prepared samples are mostly zinc-substituted magnetites but have maghemite as a minor phase. For . ≥ 0.30, only the Fe.Zn.O. solid solution is found. Increasing the zinc content from the end concentration . = 0, increases t