Multi-analytical approach to the material characterization of 16th century wall paintings from Ribeira Sacra (Galicia, NWSpain): Pictorial palette, technique and alterations

2016 ◽  
Vol 41 (3) ◽  
pp. 263-269 ◽  
Author(s):  
Lucía Pereira-Pardo ◽  
Milene Gil ◽  
Beatriz Prieto ◽  
Benita Silva
Author(s):  
Christopher Brooke ◽  
Howell Edwards ◽  
Luiz F. C. Oliveira ◽  
Richard Telford ◽  
Alex Surtees

Lubricants ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 29
Author(s):  
Carl F. O. Dahlberg ◽  
Jonas Faleskog ◽  
Per-Lennart Larsson

Correlation of sharp indentation problems is examined theoretically and numerically. The analysis focuses on elastic-plastic pressure-sensitive materials and especially the case when the local plastic zone is so large that elastic effects on the mean contact pressure will be small or negligible as is the case for engineering metals and alloys. The results from the theoretical analysis indicate that the effect from pressure-sensitivity and plastic strain-hardening are separable at correlation of hardness values. This is confirmed using finite element methods and closed-form formulas are presented representing a pressure-sensitive counterpart to the Tabor formula at von Mises plasticity. The situation for the relative contact area is more complicated as also discussed.


2013 ◽  
Vol 113 (4) ◽  
pp. 1109-1119 ◽  
Author(s):  
Paola Fermo ◽  
Andrea Piazzalunga ◽  
Mariette Vos ◽  
Martina Andreoli

2015 ◽  
Vol 47 (3) ◽  
pp. 321-328 ◽  
Author(s):  
Daniela Fico ◽  
Antonio Pennetta ◽  
Giulia Rella ◽  
Antonella Savino ◽  
Valentina Terlizzi ◽  
...  

2013 ◽  
Vol 20 (10-11) ◽  
pp. 1975-1979 ◽  
Author(s):  
J. Vogel ◽  
H.-J. Feige ◽  
J. Saupe ◽  
S. Schubert ◽  
J. Grimm

2007 ◽  
Vol 1047 ◽  
Author(s):  
Eleni Pavlidou ◽  
N. Civici ◽  
E. Caushi ◽  
L. Anastasiou ◽  
T. Zorba ◽  
...  

AbstractIn this paper are presented the studies of the paint materials and the technique used in 18th century wall paintings, originated from the orthodox church of St Athanasius, in the city of Maschopolis, a flourishing economical and cultural center, in Albania. The church was painted in 1745 by Konstantinos and Athanasios Zografi, and during the last years, restoration activities are being performed at the church. Samples that included plasters and pigments of different colors were collected from important points of the wall paintings. Additionally, as some parts of the wall-paintings were over-painted, the analysis was extended to the compositional characterization of these areas. The identification of the used materials was done by using complementary analytical methods such as Optical Microscopy, Fourier Transform Infrared spectroscopy (FTIR), Scanning Electron Microscopy (SEM-EDS) and X-ray fluorescence (TXRF).The presence of calcite in almost all the pigments is indicative for the use of the fresco technique at the studied areas, while the detection of gypsum and calcium oxalate, indicates an environmental degradation along with a biodegradation. Common pigments used in this area at 15-16th centuries, such as cinnabar, green earth, manganese oxide, carbon black and calcite were identified.


RSC Advances ◽  
2016 ◽  
Vol 6 (105) ◽  
pp. 102956-102960 ◽  
Author(s):  
Sapna D. Ponja ◽  
Ivan P. Parkin ◽  
Claire J. Carmalt

The facile synthesis of Al2O3 in the amorphous and corundum phase on glass and quartz substrates, respectively, is reported.


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