Results 11 to 20 of about 78,325 (258)

Isolation and identification of pigment-producing filamentous fungus DBFL05 and its pigment characteristics and chemical structure [PDF]

open access: yesCyTA - Journal of Food, 2023
Natural pigments derived from microorganisms have many advantages and are widely studied in the food industry. A filamentous fungus, DBFL05, was identified as Aspergillus ustus, which produces a bright and abundant brown pigment.
Minghui Zhou   +4 more
doaj   +4 more sources

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

open access: yesJournal 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   +4 more
doaj   +2 more sources

Correlation of Visible Reflectance Spectrometry and Portable Raman Data for Red Pigment Identification [PDF]

open access: yesHeritage
The accurate identification of pigments is of principal relevance in the field of cultural heritage conservation and restoration practices. In this preliminary study, a first attempt to set up a procedure for accurate red pigment identification, based on
Anna M. Gueli   +6 more
doaj   +2 more sources

Identification of widely conserved biosynthetic gene cluster involved in pigment production of Bacillus subtilis [PDF]

open access: yesmSystems
Bacillus subtilis is widely studied in the microbial secondary metabolite (SM) field due to its rich variety of important natural products and genetic tractability. We report a pigment observed in B. subtilis soil isolate MB9_B4 on certain media.
Rune Overlund Stannius   +6 more
doaj   +3 more sources

Mapping with Macro X-ray Fluorescence Scanning of Raffaello’s Portrait of Leo X

open access: yesHeritage, 2022
Raffaello is renowned as one of the Old Renaissance Masters and his paintings and painting technique are famous for the details and naturality of the characters.
Anna Mazzinghi   +5 more
doaj   +1 more source

Identification of black sturgeon caviar pigment as eumelanin [PDF]

open access: yes, 2022
Reported herein is the purification of the pigment of black sturgeon caviar and its unambiguous identification as a typical eumelanin by means of chemical degradation coupled with electron paramagnetic resonance (EPR) evidence. HPLC and LC-MS analysis of
d'Ischia M.   +6 more
core   +4 more sources

Multianalytical Non-Invasive Characterization of ‘Mater Boni Consilii’ Iconography Oil Painting

open access: yesHeritage, 2023
This paper presents the results of non-invasive diagnostic investigations performed on the canvas oil painting depicting the Marian iconography “Mater Boni Consilii”. The painting, whose author and origin are unknown, was found in an old shop in Florence
Federica Valentini   +6 more
doaj   +1 more source

X-Ray fluorescence as a method of characterizing inorganic pigment patterns in the work of Julian Onderdonk

open access: yesHeliyon, 2023
This study utilized portable X-Ray fluorescence to analyze pigment patterns in 33 paintings by Julian Onderdonk, a 19th-20th century Texas impressionist.
Christopher Dostal
doaj   +1 more source

ANALYTICAL STUDY AND TREATMENTS OF THE DECAYED MURAL PAINTINGS AT ATHRIBIS IN SHEIKH HAMAD TEMPLE, SOHAG GOVERNORATE, EGYPT [PDF]

open access: yesShedet, 2020
This article focuses on the identification of the building materials used at Athribis temple – Sohag and their most common degradation factors, and then assessing the most appropriate consolidants for the decayed wall paintings at the temple.
Ezz Orabi
doaj   +1 more source

DESIGNING AND CONSTRUCTION OF THE SPECTRAL LIBRARY FOR TYPICAL PIGMENTS USED IN CHINESE PAINTINGS [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
Suffered from the environmental changes and human’s influence, Chinese paintings are facing a worrying situation in documentation, which leads urgent into establishing digital archives to realize the permanent preservation of its surface information ...
S. Lyu   +11 more
doaj   +1 more source

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