Results 31 to 40 of about 18,795 (337)

What’s the Madder? Characterization of Old Fashioned Alizarin/Aluminum Red Pigments Using Liquid and Solid-State NMR

open access: yesColorants, 2023
This work provides significant insight into the molecular structure of alizarin lake pigments used by artists in the past. To characterize two red powders, lakes 1 and 2, obtained by complexation of 1,2-dihydroxy anthraquinone (alizarin) with Al3+, a ...
Leonel C. Silva   +4 more
semanticscholar   +1 more source

Ancient Chromophores and Auxiliaries: Phrygian Colorants from Tumulus MM at Gordion, Turkey, ca 740 BCE

open access: yesHeritage, 2023
This paper discusses colorants found in Tumulus MM, the tomb of King Midas or his father, at Gordion, the capital of the Phrygian kingdom. Chromophores, colorants, and auxiliaries are preserved largely independent of the textiles they once colored.
Mary Ballard   +3 more
doaj   +1 more source

Micro-fading spectrometry: investigating the wavelength specificity of fading [PDF]

open access: yes, 2015
A modified microfading spectrometer incorporating a linear variable filter is used to investigate the wavelength dependence of fading of traditional watercolour pigments, dosimeters and fading standards at a higher spectral resolution and/or sampling ...
AL Dupont   +17 more
core   +1 more source

Optimum spectral window for imaging of art with optical coherence tomography [PDF]

open access: yes, 2013
Optical Coherence Tomography (OCT) has been shown to have potential for important applications in the field of art conservation and archaeology due to its ability to image subsurface microstructures non-invasively.
A Alex   +27 more
core   +1 more source

Quantitative and Qualitative Characters of Madder Root at Three Different Regions of Fars Province

open access: yesپژوهشهای زراعی ایران, 2011
Madder (Rubia tinctorum L.) from Rubiaceae family, is an important industrial (dying crop) and medicinal (anti-cancer and necrosis) crop. To investigate the cultivation method, the best harvest time and also to determine dye percent of madder root, a ...
M.H. Namjooyan   +2 more
doaj   +1 more source

A holistic multimodal approach to the non-invasive analysis of watercolour paintings [PDF]

open access: yes, 2015
A holistic approach using non-invasive multimodal imaging and spectroscopic techniques to study the materials (pigments, drawing materials and paper) and painting techniques of watercolour paintings is presented.
Bailey, K   +6 more
core   +2 more sources

Asian knowledge and the development of calico printing in Europe in the seventeenth and eighteenth centuries [PDF]

open access: yes, 2010
From the seventeenth century, the brilliance and permanence of colour and the exotic nature of imported Asian textiles attracted European consumers.
Riello, Giorgio
core   +1 more source

Molecular identification of fungi trichothecens producing in seeds madder and detection of their nivalenol gene synthesis using PCR

open access: yesMajallah-i ḥifāẓat-i giyāhān, 2018
Madder is one of the most important crops that used for medical and industrial applications and is widely cultivated in Yazd province. During 2012, sampling was done form seeds madder in important areas planted in Yazd province, including Bafq and ...
Seyyed Alireza Esmailzadeh Hosseini   +2 more
doaj   +1 more source

Photochemical colour change for traditional watercolour pigments in low oxygen levels [PDF]

open access: yes, 2014
An investigation for light exposure on pigments in low-oxygen environments (in the range 0–5% oxygen) was conducted using a purpose-built automated microfadometer for a large sample set including multiple samples of traditional watercolour pigments from ...
Caspers, C   +5 more
core   +1 more source

Ultra-high resolution Fourier domain optical coherence tomography for resolving thin layers in painted works of art [PDF]

open access: yes, 2013
While OCT has been applied to the non-invasive examination of the stratigraphy of paint layers in recent years, it has been recognized that the resolutions of commercially available OCT cannot compete in depth resolution with conventional microscopic ...
Cheung, CS, Liang, H
core   +1 more source

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