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  • 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous  (3)
  • RCS MediaGroup S.p.A.  (2)
  • American Chemical Society
  • American Chemical Society (ACS)
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  • 1
    facet.materialart.
    Unknown
    Blackening of Pompeian Cinnabar paintings: X-ray micro-spectroscopy analysis (2007)
    American Chemical Society
    Details
    Publication Date: 2017-04-04
    Description: Red Pompeian paintings, very famous for their deep intensity, are currently suffering from darkening. The origins of this darkening degradation are not clearly identified yet and remain a major issue for curators. In the specific case of cinnabar (HgS)-based red pigment, a photoinduced conversion into black metacinnabar is usually suspected. This work is focused on the blackening of red cinnabar paintings coated on a sparry calcite mortar. Different samples exhibiting different levels of degradation were selected upon visual observations and analyzed by synchrotron-based microanalytical techniques. Atomic and molecular compositions of the different debased regions revealed two possible degradation mechanisms. On one hand, micro X-ray fluorescence elemental maps show peculiar distributions of chlorine and sulfur. On the other hand, X-ray absorption spectroscopy performed at both Cl and S K-edges confirms the presence of characteristic degradation products: (i) Hg- Cl compounds (e.g., corderoite, calomel, and terlinguaite), which may result from the reaction with exogenous NaCl, in gray areas; (ii) gypsum, produced by the calcite sulfation, in black coatings. Metacinnabar is never detected. Finally, a cross section was analyzed to map the in-depth alteration gradient. Reduced and oxidized sulfur distributions reveal that the sulfated black coating consists of a 5-ím-thick layer covering intact cinnabar.
    Description: Published
    Description: 7484-7492
    Description: reserved
    Keywords: Microspectroscopy Analysis ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    facet.materialart.
    Unknown
    La lezione della terra: tutto quello che ci hanno insegnato i terremoti (2016)
    RCS MediaGroup S.p.A.
    Details
    Publication Date: 2017-04-04
    Description: Milano ospita una mostra sui sismi, dove uno spazio è riservato anche a quelli storici come Messina 1908. Una studiosa analizza i più importanti e ciò che abbiamo imparato
    Description: Published
    Description: 7IT. Educazione e divulgazione scientifica
    Description: 8IT. Informazione e editoria
    Description: 9IT. Geoetica
    Description: N/A or not JCR
    Description: open
    Keywords: terremoti ; micronazione sismica ; progettazione anti-sismica ; classificazione sismica ; pericolosità sismica ; rischio sismico ; liquefazione ; prevenzione ; normativa sismica ; politica ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.08. Risk::05.08.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
    facet.materialart.
    Unknown
    La Terra uccide ma possiamo limitare i danni (2016)
    RCS MediaGroup S.p.A.
    Details
    Publication Date: 2017-04-04
    Description: Cresce la vulnerabilità. Megacittà con milioni di abitanti hanno raggiunto aree dalle caratteristiche geomorfologiche decisamente sfavorevoli. La lezione di Amatrice. L'Italia è stata colta impreparata dal recente sisma: sappiamo gestire l'emergenza, ma la prevenzione è carente
    Description: Published
    Description: 7IT. Educazione e divulgazione scientifica
    Description: 9IT. Geoetica
    Description: N/A or not JCR
    Description: open
    Keywords: terremoti ; pericolosità ; rischio ; vulnerabilità ; prevenzione ; società ; 05. General::05.03. Educational, History of Science, Public Issues::05.03.99. General or miscellaneous ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Location Call Number Expected Availability
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    PAPER (OA)
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