Results 11 to 20 of about 3,358,836 (338)

A Novel Spectral Matching Approach for Pigment: Spectral Subsection Identification Considering Ion Absorption Characteristics

Remote Sensing, 2020
Background: Hyperspectral technology has made it possible to perform completely non-invasive investigations on pigment analysis, in particular, on pigment identification.
Yiyi Liu, Shuqiang Lyu, Miaole Hou, Zhenhua Gao, Wanfu Wang, Xiao Zhou   +5 more
doaj   +5 more sources

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   +3 more sources

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

Heritage
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, Rosaria Galvagno, Adriana Incardona, Eleonora Pappalardo, Giuseppe Politi, Giuseppe Paladini, Giuseppe Stella   +6 more
doaj   +3 more sources

Identification of black sturgeon caviar pigment as eumelanin [PDF]

Food Chemistry, 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., Benning K., Nesbeth D. N., D'Errico G., Napolitano A., Setaro B., Panzella L.   +6 more
core   +6 more sources

Unmixing and pigment identification using visible and short-wavelength infrared: Reflectance vs logarithm reflectance hyperspaces [PDF]

Journal of Cultural Heritage, 2023
Hyperspectral imaging has recently consolidated as a useful technique for pigment mapping and identification, although it is commonly supported by additional non-invasive analytical methods.
Eva M Valero, MIGUEL Angel Martínez-Domingo, Ana BELÉN López-Baldomero   +2 more
exaly   +2 more sources

Isolation and Identification of Paint Pigments by Sublimation [PDF]

Microscopy Today, 1996
Abstract The particle size of organic pigments used in modern coatings is extremely fine. Since these individual pigment crystals are typically less than 1 μm in size, they are difficult, if not impossible, to characterize and identify by microscopical means.
Skip Palenik
openalex   +2 more sources

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

CyTA - 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, Yajun Chen, Xue Fang, Li Wu, Yan Zhang   +4 more
doaj   +3 more sources

Identification of the orange pigment in Nonomuraea gerenzanensis and development of a pigment-free mutant

AMB Express
The secondary metabolite A40926, a precursor to the glycopeptide antibiotic dalbavancin, is synthesized by the rare actinomycete Nonomuraea gerenzanensis (N. gerenzanensis) within the pharmaceutical industry.
Yutong Cheng, Wen Gao, Shi Shi, Fubo Han, Huijun Dong   +4 more
doaj   +3 more sources

Applications of visible spectral imaging technology for pigment identification of colored relics

Heritage Science
Identifying pigments from colored relics is essential for their color restoration and for facsimile creation. A workflow for identifying pigment information is constructed based on visible spectral imaging technology, aligned with the drawing process of ...
Chun-ao Wei, Junfeng Li, Shiwei Liu
doaj   +2 more sources

Identification and Functional Characterization of Tomato CircRNAs Derived from Genes Involved in Fruit Pigment Accumulation [PDF]

Scientific Reports, 2017
CircRNAs, a class of widespread circular RNAs produced from precursor mRNA back-splicing, have been implicated in regulation of gene expression in eukaryotes, but their biological functions in plants have not yet been elucidated.
Jinjuan Tan, Zhongjing Zhou, Yujie Niu, Xiaoyong Sun, Zhiping Deng   +4 more
openalex   +2 more sources