Results 61 to 70 of about 41,681 (307)

Panoramic, Macro and Micro Multispectral Imaging: An Affordable System for Mapping Pigments on Artworks

Journal of Conservation and Museum Studies, 2015
Multispectral imaging systems are used in art examinations to map and identify pigments, binders and areas of retouching. A monochromatic camera is combined with an appropriate wavelength selection system and acquires a variable ...
Antonino Cosentino
doaj  

Exploration, Isolation, and Identification of Carotenoid from Bacterial Symbiont of Sponge Callyspongia vaginalis

Ilmu Kelautan, 2017
During the past two decades research on marine bacteria has highlighted the tremendous potential of symbiotic-microorganisms as a source of bioactive secondary.
Iqna Kamila Abfa, Ocky Karna Radjasa, A B Susanto, Handung Nuryadi, Ferry F. Karwur   +4 more
doaj   +1 more source

High performance liquid chromatography as a micro-destructive technique for the identification of anthraquinone red dyestuffs in cultural heritage objects

Chemistry Teacher International, 2023
This article describes two of the most common natural sources of red anthraquinones that have been used since antiquity for textile dyeing and as lake pigments, namely cochineal insect and the roots of Rubia and Relbunium plants.
Careaga Valeria P., Blanco Guerrero Astrid, Siracusano Gabriela, Maier Marta S.   +3 more
doaj   +1 more source

Bio‐Inspired Synthesis of Macroporous Single Crystal Particles as Scattering Agents

Advanced Functional Materials, EarlyView.
A general strategy is presented that delivers unique, single‐crystal microparticles that combine submicron macroporosity and uniform particle shapes. A bioinspired approach is used to occlude three distinct types of additives – polystyrene microspheres, polymer vesicles and amino acids – within calcite single crystals, and subsequent thermal annealing ...
Stephanie E. Foster, Gianni Jacucci, Ouassef Nahi, Thomas Kress, Zabeada Aslam, Stuart Micklethwaite, Alexander N. Kulak, Rik Drummond‐Brydson, Melinda J. Duer, Yi‐Yeoun Kim, Silvia Vignolini, Fiona C. Meldrum   +11 more
wiley   +1 more source

Looking at the Modern to Better Understand the Ancient: Is It Possible to Differentiate Mars Pigments from Archaeological Ochres?

Heritage
This article offers a discussion of the possibility of distinguishing ochres from Mars pigments. The discussion addresses technological, archaeological, and artistic aspects.
Maria Cecilia Carangi, Cristina Corti, Laura Rampazzi   +2 more
doaj   +1 more source

Carotenoid Cocktail Produced by An Antarctic Soil Flavobacterium with Biotechnological Potential

Microorganisms, 2021
Carotenoids are highly important in pigmentation, and its content in farmed crustaceans and fish correlates to their market value. These pigments also have a nutritional role in aquaculture where they are routinely added as a marine animal food ...
Paulina Pradel, Nancy Calisto, Laura Navarro, Andrés Barriga, Nicolás Vera, Carlos Aranda, Robert Simpfendorfer, Natalia Valdés, Gino Corsini, Mario Tello, Alex R. González   +10 more
doaj   +1 more source

Mechanically Mutable Matrices: A Hierarchical Investigation of Decellularized Sea Cucumber Collagen as an Adaptable Scaffold Material

Advanced Functional Materials, EarlyView.
Sea cucumber mutable collagenous tissue (MCT) is a remarkable collagen‐based material which can rapidly undergo large changes in stiffness through transiently bound effector proteins. Here, we investigate the hierarchical structure and mechanical response of MCT from Cucumaria frondosa across length scales with a wide range of methods, also exploring ...
Nathalie R. H. Singh, Amy K. Lin, Sabra Rostami, Cameron Hastie, Paul W. Wiseman, Patrick Flammang, Christopher Moraes, Matthew J. Harrington   +7 more
wiley   +1 more source

Produção de pigmento vermelho a partir do pigmento laranja produzido por Monascus ruber CCT 3802 [PDF]

, 2009
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de AlimentosA produção de pigmentos por microrganismos é uma alternativa ao aumento da produção destes compostos naturais frente aos ...
Vendruscolo, Francielo
core  

Identification of organic pigments in tattoo inks and permanent make-up using laser desorption ionisation mass spectrometry [version 2; referees: 2 approved]

F1000Research, 2018
Nowadays, about 12% of the European and 20% of the US population are tattooed. Rising concerns regarding consumer safety, led to legal restrictions on tattoo and permanent make-up (PMU) inks. Restrictions also include bans on certain colourants. Both ink
Markus Niederer, Urs Hauri, Lydia Kroll, Christopher Hohl   +3 more
doaj   +1 more source

Silicone Phase Behavior Resolves the Softness–Surface Functionality Trade‐Off in Emerging Stretchable Electronics

Advanced Functional Materials, EarlyView.
Ultrasoft silicone elastomers often sacrifice surface functionality for mechanical compliance. In Mold Star, low‐molecular‐weight species form a dispersed phase that weakens the network and passivates the surface. Solvent extraction removes this phase, unexpectedly improving both extensibility and metallization performance, enabling conductive ...
Gloria M. D'Amaral, Rahaf Nafez Hussein, Tiago Carneiro Gomes, Jordan E. Nicholson, Lauren J. Renaud, Emily J. Addison, Simon Rondeau‐Gagné, Tricia Breen Carmichael   +7 more
wiley   +1 more source