Characterization of ancient building lime mortars of Anhui province, China: A multi‐analytical approach

Archaeometry ◽  
2020 ◽  
Author(s):  
G. Wei ◽  
C. Germinario ◽  
C. Grifa ◽  
X. Ma
Keyword(s):  
Analytical Approach ◽  
Anhui Province ◽  
Lime Mortars

scholarly journals Mortars from the Palace of Knossos in Crete, Greece: A Multi-Analytical Approach

Minerals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 30
Author(s):  
Fernanda Carvalho ◽  
Pedro Sousa ◽  
Nuno Leal ◽  
Joaquim Simão ◽  
Elissavet Kavoulaki ◽  
...  
Keyword(s):  
Analytical Approach ◽  
Building Materials ◽  
Archaeological Site ◽  
Relevant Information ◽  
Morphological Characterization ◽  
Archaeological Sites ◽  
X Ray Diffraction ◽  
Lime Mortars ◽  
Materials Used

The study of building materials constituting cultural heritage is fundamental to understand their characteristics and predict their behavior. When considering materials from archaeological sites, their characterization can provide not only relevant information for a broader understanding of the site and its importance and significance but can also increase knowledge about ancient materials and their performance. The Palace of Knossos is a very important archaeological site in the European history context, and its preservation benefits from the characterization of the constituent materials. Samples of mortars from this monument were collected under the scope of the H2020 HERACLES project, where a multi-analytical approach was chosen using established protocols for the different sample typologies. Instrumental techniques such as optical microscopy (OM), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), and simultaneous thermogravimetry and differential thermal analysis (TG–DTA) were used for the chemical, mineralogical, and morphological characterization of these mortar samples. The results indicate that the majority are lime mortars, both aerial and hydraulic, but gypsum-based mortars were also identified. Differences in the chemical composition of the samples in distinct areas of the monument allowed us to reflect on the variety of materials used in the construction of the Palace of Knossos.

Multi-analytical approach for chemical-mineralogical characterization of reaction rims in the lime mortars from Amaiur Castle (Navarre, Spain)

2020 ◽  
Vol 152 ◽  
pp. 104303 ◽  
Author(s):  
Graciela Ponce-Antón ◽  
Maria Cruz Zuluaga ◽  
Luis Angel Ortega ◽  
Juantxo Agirre Mauleon
Keyword(s):  
Analytical Approach ◽  
Mineralogical Characterization ◽  
Lime Mortars

Molecular prevalence and characterization of Cryptosporidium in domestic free-range poultry in Anhui Province, China

2021 ◽  
Author(s):  
Zheng Gong ◽  
Zhen-zhen Kan ◽  
Jia-min Huang ◽  
Zhui Fang ◽  
Xin-chao Liu ◽  
...  
Keyword(s):  
Anhui Province ◽  
Free Range

Design and characterization of a modified WDM ring network – An analytical approach

Optik ◽  
2012 ◽  
Vol 123 (12) ◽  
pp. 1103-1107 ◽  
Author(s):  
Virendra S. Shekhawat ◽  
D.K. Tyagi ◽  
V.K. Chaubey
Keyword(s):  
Analytical Approach ◽  
Ring Network

scholarly journals Nanoscale characterization of ion tracks: MC simulations versus analytical approach

2012 ◽  
Vol 66 (11) ◽  
Author(s):  
M. U. Bug ◽  
E. Surdutovich ◽  
H. Rabus ◽  
A. B. Rosenfeld ◽  
A. V. Solov’yov
Keyword(s):  
Analytical Approach ◽  
Ion Tracks ◽  
Nanoscale Characterization

scholarly journals Lipoarabinomannans: characterization of the multiacylated forms of the phosphatidyl-myo-inositol anchor by NMR spectroscopy

1999 ◽  
Vol 337 (3) ◽  
pp. 453-460 ◽  
Author(s):  
Jérôme NIGOU ◽  
Martine GILLERON ◽  
Germain PUZO
Keyword(s):  
Molecular Basis ◽  
Quantum Correlation ◽  
Analytical Approach ◽  
31P Nmr ◽  
Multiple Quantum ◽  
Double Negative ◽  
Bacillus Calmette Guerin ◽  
One Dimensional ◽  
The One

Lipoarabinomannans, which exhibit a large spectrum of immunological activities, emerge as the major antigens of mycobacterial envelopes. The lipoarabinomannan structure is based on a phosphatidyl-myo-inositol anchor whose integrity has been shown to be crucial for lipoarabinomannan biological activity and particularly for presentation to CD4/CD8 double-negative αβT cells by CD1 molecules. In this report, an analytical approach was developed for high-resolution 31P-NMR analysis of native, i.e. multiacylated, lipoarabinomannans. The one-dimensional 31P spectrum of cellular lipoarabinomannans, from Mycobacterium bovis Bacillus Calmette–Guérin, exhibited four 31P resonances typifying four types of lipoarabinomannans. Two-dimensional 1H-31P heteronuclear multiple-quantum-correlation/homonuclear Hartmann–Hahn analysis of the native molecules showed that these four types of lipoarabinomannan differed in the number and localization of fatty acids (from 1 to 4) esterifying the anchor. Besides the three acylation sites previously described, i.e. positions 1 and 2 of glycerol and 6 of the mannosyl unit linked to the C-2 of myo-inositol, we demonstrate the existence of a fourth acylation position at the C-3 of myo-inositol. We report here the first structural study of native multiacylated lipoarabinomannans, establishing the structure of the intact phosphatidyl-myo-inositol anchor. Our findings would help gain more understanding of the molecular basis of lipoarabinomannan discrimination in the binding process to CD1 molecules.

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