scholarly journals Near-UV to mid-IR reflectance imaging spectroscopy of paintings on the macroscale

2019 ◽  
Vol 5 (8) ◽  
pp. eaaw7794 ◽  
Author(s):  
F. Gabrieli ◽  
K. A. Dooley ◽  
M. Facini ◽  
J. K. Delaney
Keyword(s):  
Imaging Modality ◽  
Imaging Spectroscopy ◽  
Illuminated Manuscripts ◽  
Italian Renaissance ◽  
Complex Data ◽  
Robust Identification ◽  
Near Ir ◽  
Ir Reflectance ◽  
Reflectance Imaging Spectroscopy

Broad spectral range reflectance imaging spectroscopy (BR-RIS) from the near UV through the mid–infrared (IR) (350 to 25,000 nm or 28,571 to 400 cm−1) was investigated as an imaging modality to provide maps of organic and inorganic artists’ materials in paintings. While visible–to–near-IR (NIR) reflectance and elemental x-ray fluorescence (XRF) imaging spectroscopies have been used for in situ mapping, each method alone is insufficient for robust identification. Combining the two improves results but requires complex data processing. To test BR-RIS, image cubes from early Italian Renaissance illuminated manuscripts were acquired using two spectrometers. Maps of pigments, including trace minerals associated with mined azurite, and their associated binding media were made. BR-RIS has a more straightforward analysis approach as implemented here than visible-to-NIR, mid-IR, or XRF imaging spectroscopy alone and offers the largest amount of macroscale information for mapping artists’ materials by comparison.

Near Infrared Reflectance Imaging Spectroscopy to Map Paint Binders In Situ on Illuminated Manuscripts

2012 ◽  
Vol 51 (23) ◽  
pp. 5607-5610 ◽  
Author(s):  
Paola Ricciardi ◽  
John K. Delaney ◽  
Michelle Facini ◽  
Jason G. Zeibel ◽  
Marcello Picollo ◽  
...  
Keyword(s):  
Near Infrared ◽  
Imaging Spectroscopy ◽  
Illuminated Manuscripts ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance ◽  
Reflectance Imaging Spectroscopy ◽  
Paint Binders

Near Infrared Reflectance Imaging Spectroscopy to Map Paint Binders In Situ on Illuminated Manuscripts

2012 ◽  
Vol 124 (23) ◽  
pp. 5705-5708 ◽  
Author(s):  
Paola Ricciardi ◽  
John K. Delaney ◽  
Michelle Facini ◽  
Jason G. Zeibel ◽  
Marcello Picollo ◽  
...  
Keyword(s):  
Near Infrared ◽  
Imaging Spectroscopy ◽  
Illuminated Manuscripts ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance ◽  
Reflectance Imaging Spectroscopy ◽  
Paint Binders

Use of near infrared reflectance imaging spectroscopy to map wool and silk fibres in historic tapestries

2016 ◽  
Vol 8 (44) ◽  
pp. 7886-7890 ◽  
Author(s):  
John K. Delaney ◽  
Paola Ricciardi ◽  
Lisha Glinsman ◽  
Michael Palmer ◽  
Julia Burke
Keyword(s):  
Near Infrared ◽  
Imaging Spectroscopy ◽  
High Sensitivity ◽  
Infrared Reflectance ◽  
Near Infrared Reflectance ◽  
Textile Fibres ◽  
Reflectance Imaging Spectroscopy ◽  
Hyperspectral Camera

Reflectance imaging spectroscopy is examined as a tool to map and identify natural textile fibresin situon historic tapestries using a high-sensitivity hyperspectral camera.

scholarly journals Characterization of conichalcite by SEM, FTIR, Raman and electronic reflectance spectroscopy

2005 ◽  
Vol 69 (2) ◽  
pp. 155-167 ◽  
Author(s):  
B. J. Reddy ◽  
R. L. Frost ◽  
W. N. Martens
Keyword(s):  
Near Infrared ◽  
Adsorbed Water ◽  
Reflectance Spectroscopy ◽  
Sem Images ◽  
X Ray ◽  
Near Ir ◽  
Ir Reflectance ◽  
Yavapai County ◽  
Ir Bands

AbstractThe mineral conichalcite from the western part of Bagdad mine, Bagdad, Eureka District, Yavapai County, Arizona, USA has been characterized by electronic, near-infrared (NIR), Raman and infrared (IR) spectroscopy. Scanning electron microscopy (SEM) images show that the mineral consists of bundles of fibres. Calculations based on the results of the energy dispersive X-ray analyses on a stoichiometric basis show the substitution of arsenate by 12 wt.% of phosphate in the mineral. Raman and IR bands are assigned in terms of the fundamental modes of AsO43− and PO43− molecules and are related to the mineral structure. Near-IR reflectance spectroscopy shows the presence of adsorbed water and hydroxyl units in the mineral. The Cu(II) coordination polyhedron in conichalcite can have at best pseudo-tetragonal geometry. The crystal field and tetragonal field parameters of the Cu(II) complex were calculated and found to agree well with the values reported for known tetragonal distortion octahedral complexes.

scholarly journals Surface Morphology of Cometary Nuclei

1991 ◽  
Vol 116 (2) ◽  
pp. 761-767
Author(s):  
D. Möhlmann ◽  
E. Kührt
Keyword(s):  
Imaging Techniques ◽  
Cometary Nucleus ◽  
Complex Data ◽  
Cometary Nuclei ◽  
Precise Knowledge ◽  
New Information ◽  
Consistent Model ◽  
Topological Surface ◽  
In Situ Observations

Abstract.The first in situ observations of a cometary nucleus by imaging techniques on board the VEGA and Giotto spacecraft in 1986 opened the possibility of directly studying the properties and structures of a cometary surface. This new information, combined with results from other experiments made by these spacecraft and with results from laboratory experiments and Earth-bound radar observations, gave a better basis for coming from speculation to more precise knowledge in describing properties of cometary surfaces and related activity. It is the aim of this paper to discuss the different views developed to understand properties of cometary surfaces and to propose a consistent model for understanding topological surface properties and related cometary activity. We accomplish this by extending former hypotheses and approaches and making them more precise in the light of the new and more complex data.

scholarly journals In Situ Mass Spectrometry Diagnostics of Impaired Glucose Tolerance Using Label-Free Metabolomic Signature

Diagnostics ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1052
Author(s):  
Petr G. Lokhov ◽  
Oxana P. Trifonova ◽  
Dmitry L. Maslov ◽  
Elena E. Balashova
Keyword(s):  
Mass Spectrometry ◽  
Glucose Tolerance ◽  
Data Processing ◽  
Impaired Glucose Tolerance ◽  
Characteristic Curve ◽  
Complex Data ◽  
Label Free ◽  
Mass Peak ◽  
Mass Spectrometers

In metabolomics, mass spectrometry is used to detect a large number of low-molecular substances in a single analysis. Such a capacity could have direct application in disease diagnostics. However, it is challenging because of the analysis complexity, and the search for a way to simplify it while maintaining the diagnostic capability is an urgent task. It has been proposed to use the metabolomic signature without complex data processing (mass peak detection, alignment, normalization, and identification of substances, as well as any complex statistical analysis) to make the analysis more simple and rapid. Methods: A label-free approach was implemented in the metabolomic signature, which makes the measurement of the actual or conditional concentrations unnecessary, uses only mass peak relations, and minimizes mass spectra processing. The approach was tested on the diagnosis of impaired glucose tolerance (IGT). Results: The label-free metabolic signature demonstrated a diagnostic accuracy for IGT equal to 88% (specificity 85%, sensitivity 90%, and area under receiver operating characteristic curve (AUC) of 0.91), which is considered to be a good quality for diagnostics. Conclusions: It is possible to compile label-free signatures for diseases that allow for diagnosing the disease in situ, i.e., right at the mass spectrometer without complex data processing. This achievement makes all mass spectrometers potentially versatile diagnostic devices and accelerates the introduction of metabolomics into medicine.

Optical coherence tomography-integrated, wearable (backpack-type), compact diagnostic imaging modality for in situ leaf quality assessment

2017 ◽  
Vol 56 (9) ◽  
pp. D108 ◽  
Author(s):  
Ruchire Eranga Wijesinghe ◽  
Seung-Yeol Lee ◽  
Naresh Kumar Ravichandran ◽  
Sangyeop Han ◽  
Hyosang Jeong ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Diagnostic Imaging ◽  
Quality Assessment ◽  
Imaging Modality ◽  
Optical Coherence ◽  
Leaf Quality
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