A comparison of noise models in a hybrid reference spectrum and principal components analysis algorithm for Raman spectroscopy

2013 ◽  
Vol 44 (6) ◽  
pp. 841-856 ◽  
Author(s):  
Dominique Van de Sompel ◽  
Ellis Garai ◽  
Cristina Zavaleta ◽  
Sanjiv Sam Gambhir
Keyword(s):  
Raman Spectroscopy ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Reference Spectrum ◽  
Analysis Algorithm ◽  
Components Analysis ◽  
Noise Models

Diagnosis of atherosclerosis in human carotid artery by FT-Raman spectroscopy: Principal Components Analysis algorithm

2004 ◽  
Author(s):  
Grazielle V. Nogueira ◽  
Landulfo Silveira, Jr. ◽  
Airton A. Martin ◽  
Renato A. Zangaro ◽  
Marcos T. Pacheco ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Carotid Artery ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Analysis Algorithm ◽  
Ft Raman Spectroscopy ◽  
Components Analysis ◽  
Human Carotid ◽  
Ft Raman

scholarly journals Raman investigation of corrosion products on Roman copper-based artefacts

ACTA IMEKO ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 129
Author(s):  
Leila Es Sebar ◽  
Leonardo Iannucci ◽  
Yuval Goren ◽  
Peter Fabian ◽  
Emma Angelini ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Roman Period ◽  
Corrosion Products ◽  
Beer Sheva ◽  
Chemometric Technique ◽  
Components Analysis ◽  
Main Components

<p class="Abstract">This paper illustrates a case study related to the characterisation of corrosion products present on recently excavated artefacts. The archaeological findings, from the Rakafot 54 site (Beer-Sheva, Israel), consist of 23 coins and a pendant, all dating back to the Roman period. Raman spectroscopy was used to identify the corrosion products that compose the patina covering the objects. To facilitate and support their identification, spectra were then processed using principal components analysis. This chemometric technique allowed the identification of two main compounds, classified as atacamite and clinoatacamite, which formed the main components of the patinas. The results of this investigation can help in assessing the conservation state of artefacts and defining the correct restoration strategy.</p>

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