Results 61 to 70 of about 633 (178)

Comparison of macro x‐ray fluorescence and reflectance imaging spectroscopy for the semi‐quantitative analysis of pigments in easel paintings: A study on lead white and blue verditer

open access: yesX-Ray Spectrometry, Volume 53, Issue 6, Page 438-451, November/December 2024.
Abstract Macroscopic x‐ray fluorescence imaging spectroscopy (MA‐XRF) and reflectance imaging spectroscopy (RIS) are important tools in the analysis of cultural heritage objects, both for conservation and art historical research purposes. The elemental and molecular distributions provided by MA‐XRF and RIS respectively, are particularly useful for the ...
Luís Manuel de Almeida Nieto   +6 more
wiley   +1 more source

Improvement of intestinal microbial structure in patients with cerebral infarction through in vitro fermentation of anthocyanins from Lycium ruthenicum Murray

open access: yesFood Science &Nutrition, Volume 12, Issue 10, Page 7481-7491, October 2024.
The in vitro fermentation product of Lycium ruthenicum Murray anthocyanins significantly increased the diversity of the intestinal microbiota in patients with cerebral infarction. ACN promoted the proliferation of beneficial bacteria and decreased the growth of potentially harmful bacteria in the gut of patients with acute cerebral infarction.
Jun Qiu, Bin Ye, Lei Feng
wiley   +1 more source

Petrographical study of gilding and paints on white stone XYII ANE (Moscow Cremlin)

open access: yesRUDN Journal of Engineering Research, 2010
The character of gilding and paint composion of tsarevna Maria Ioannovna tombstone slab was studied. The morphology and the chemical composition of gilding testified with using gold powder. The composition of gilding Au, Hg, Ag, Mo, Ni, Cu.
R V Lobzova   +3 more
doaj  

Non-invasive identification of paint binders in illuminated manuscripts by ER-FTIR spectroscopy: a systematic study of the influence of different pigments on the binders’ characteristic spectral features

open access: yesHeritage Science, 2019
This paper presents the results of a study of pigment-binder systems painted on parchment, both in the form of reference samples prepared in the laboratory, and of medieval and Renaissance illuminated manuscripts, by means of contactless Fourier ...
Luca Nodari, Paola Ricciardi
doaj   +1 more source

Machine learning tools for the classification of visible reflectance spectra of inorganic pigments historically used in wall paintings

open access: yesGe-conservación
Three different classification methods applied to the field of Cultural Heritage are compared. Focusing on the non-invasive and in situ identification of historical inorganic pigments using visible reflectance spectroscopy, linear and non-linear ...
Jordi Cruz, Roberto Sáez Hernández
doaj   +1 more source

Pigments and binding media of polychrome relics from the central hall of Longju temple in Sichuan, China

open access: yesHeritage Science, 2019
Longju temple, located in Guanghan County, Sichuan province of China, is a Buddhist temple with great cultural significance. It has preserved polychrome relics since 1466 of the Ming dynasty. The deterioration of these ancient colored paintings is posing
Erxin Chen   +3 more
doaj   +1 more source

Chemical characterization and mobility of metal species in fly ash–water system

open access: yesWater Science, 2015
The present investigation was conducted to study the leaching characteristics, speciation and fractionation of trace and major elements from fly ash. Five liquid-to-solid ratios (L/S) were selected, ranging from 0.5 to 1. The releasing of trace and major
lubna Abdel Aziz Ibrahim
doaj   +1 more source

Illuminating the problem of blue verditer synthesis in the early modern English period: chemical characterisation and mechanistic understanding

open access: yesHeritage Science
We present a study into early modern English production of blue verditer, an early synthetic copper-based blue pigment chemically analogous to azurite. Verditers have been identified in numerous wall and easel paintings.
Ellen H. Purdy   +3 more
doaj   +1 more source

The Colors in Medieval Illuminations through the Magnificent Scriptorium of Alfonso X, the Learned

open access: yesHeritage
This pioneering work studied the medieval color palette of four manuscripts produced in the scriptorium of Alfonso X, king of the Crown of Castile (r. 1252-84), including the Songs of Holy Mary (Cantigas de Santa Maria, in Rich Codex and Musicians’ Codex)
Márcia Vieira   +5 more
doaj   +1 more source

Interdisciplinary study of the panel painting depicting the "Pentecostes", attributed to Fernão Gomes

open access: yesConservar Património, 2010
This paper presents a study on the technique and materials used in the panel painting entitled Pentecostes, attributed to the artist Fernão Gomes (XVIIth century), housed in the Museu Nacional de Arte Antiga, in Lisbon.
Diana Conde   +5 more
doaj   +1 more source

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