Results 1 to 10 of about 2,696,726 (300)

Hyperspectral Analysis of Pigment Identification and Abundance Inversion in the Dome of China’s Yungang Grotto 7 [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Most of the grotto temples have undergone long-term weathering and multiple repainting campaigns, so accurate identification of the composition and spatial abundance of surface pigments is an important foundation for pigment characterization and ...
J. Yan, J. Yan, S. Lyu, S. Lyu, B. Ning, L. Li, M. Hou   +6 more
doaj   +2 more sources

By the Hand of Angelos? Analytical Investigation of a Remarkable 15th Century Cretan Icon

Heritage, 2020
A 15th century St Theodoros icon of outstanding quality is on display at the Zakynthos Ecclesiastical Art Museum. On the basis of certain stylistic characteristics, this icon has been attributed to the legendary Cretan painter Angelos Akotantos. In order
Georgios P. Mastrotheodoros, Marios Theodosis, Eleni Filippaki, Konstantinos G. Beltsios   +3 more
doaj   +1 more source

A Groupware for Pigment Identification in Cultural Heritage

International Journal of Virtual Reality, 2009
The preservation of cultural heritage is a multidisciplinary field of study that is aimed at analyzing and preserving ancient artifacts. Nowadays, cultural heritage investigators can make use of available non-invasive solutions able to provide useful information about materials, techniques, and retouches.
C. E. Palazzi, ROCCETTI, MARCO
openaire   +7 more sources

Identification and quantification of anthocyanin pigments in colored rice [PDF]

Nutrition Research and Practice, 2008
Anthocyanin pigments from varieties of black, red and wild rice were identified and quantified to evaluate their potential as nutritional function, natural colorants or functional food ingredients. Anthocyanin extraction was conducted with acidified methanol with 0.1M HCl (85:15, v/v) and identification of anthocyanin, aglycone and sugar moieties was ...
Kim, Min-Kyoung, Kim, Han-ah, Koh, Kwangoh, Kim, Hee-Seon, Lee, Young Sang, Kim, Yong Ho   +5 more
openaire   +2 more sources

Composition analysis and structural identification of anthocyanins in fruit of waxberry

Czech Journal of Food Sciences, 2011
Anthocyanin pigments in the fruit of waxberry (Myrica rubra Sieb. et Zucc.), were extracted with 0.1% HCl in ethanol, and the crude anthocyanin extract was purified by C18 Sep-Pak cartridge open-column chromatography.
Chuan-Guang Qin, Yang Li, Weining Niu, Yan Ding, Xiaoya Shang, Chunlan Xu   +5 more
doaj   +1 more source

Application of micro-raman and ft-ir spectroscopy in forensic analysis of automotive topcoats in the Republic of Macedonia

Macedonian Journal of Chemistry and Chemical Engineering, 2008
Raman and infrared spectroscopy are two complementary spectroscopic techniques that can produce fast, efficient and accurate detection of the pigments and/or binders used in automotive topcoats.
Maja Skenderovska, Biljana Minčeva-Šukarova, Liljana Andreeva   +2 more
doaj   +1 more source

Pigment Identification of Ancient Wall Paintings Based on a Visible Spectral Image

Journal of Spectroscopy, 2020
Many ancient wall paintings are confronted with the threat of irreversible damages and in urgent requirement of restoration. This work provides the superpixel segmentation method and pigment identification method for the visible spectral image of ancient
Junfeng Li, Dehong Xie, Miaoxin Li, Shiwei Liu, Chun’ao Wei   +4 more
doaj   +1 more source

MALDI-TOF mass spectrometric identification of dyes and pigments [PDF]

Journal of the American Society for Mass Spectrometry, 2007
We have used MALDI-TOF mass spectrometry to characterize a selection of dyes from the Schweppe dye collection and pigments from the Tate Gallery collection. MALDI-TOF mass spectra of such samples are easily obtained and, through observation of both positive and negative ion spectra, provide a convenient, versatile method for dye characterization and ...
Soltzberg, L.J., Hagar, Amanda, Kridaratikorn, Supicha, Mattson, Anne, Newman, Richard   +4 more
openaire   +2 more sources

Natural Substrates and Culture Conditions to Produce Pigments from Potential Microbes in Submerged Fermentation

Fermentation, 2022
Pigments from bacteria, fungi, yeast, cyanobacteria, and microalgae have been gaining more demand in the food, leather, and textile industries due to their natural origin and effective bioactive functions.
Chatragadda Ramesh, V. R. Prasastha, Mekala Venkatachalam, Laurent Dufossé   +3 more
doaj   +1 more source

Pyomelanin biosynthetic pathway in pigment-producer strains from the pandemic Acinetobacter baumannii IC-5 [PDF]

Memorias do Instituto Oswaldo Cruz, 2020
BACKGROUND Acinetobacter baumannii outbreaks have been associated with pandemic International Clones (ICs), but the virulence factors involved with their pathogenicity are sparsely understood.
Érica Fonseca, Fernanda Freitas, Raquel Caldart, Sérgio Morgado, Ana Carolina Vicente   +4 more
doaj   +1 more source