Results 141 to 150 of about 1,443 (177)

Bio-Sourced Quinones for Sustainable Electrochemical Energy Storage: The Case Studies of Tannins and Sepia Melanin

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3D Network of Sepia Melanin and N‐ and, S‐Doped Graphitic Carbon Quantum Dots for Sustainable Electrochemical Capacitors

Advanced Sustainable Systems, 2021
AbstractOrganic electrode materials operating in aqueous electrolytes offer the opportunity to avoid toxic, critical, and expensive materials for electrochemical energy storage. When deposited on carbon current collectors, redox active organic materials add faradaic to electrostatic capacitance contribution to the electrodes.
Abdelaziz Gouda, Rafik Naccache, Francesca Soavi   +2 more
exaly   +2 more sources

The reflectance of sepia melanin at THz frequencies

2023 5th Australian Microwave Symposium (AMS), 2023
Negin Foroughimehr, Zoltan Vilagosh, Andrew W Wood   +2 more
exaly   +2 more sources

The Absorbance of Physiological Melanin and Sepia at 4.0 to 20.0 THz

2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)
Zoltan Vilagosh, Negin Foroughimehr, Ali Yavari   +2 more
exaly   +2 more sources

¹H NMR Spectroscopic Characterization of Solutions of Sepia Melanin, Sepia Melanin Free Acid and Human Hair Melanin

Pigment Cell Research, 2002
A 1H nuclear magnetic resonance study of Sepia melanin, Sepia melanin free acid (Sepia MFA) and human hair melanin was carried out in deuterium oxide solution at pH 10–11. The empirical formula of Sepia MFA was calculated and used to estimate the number of protons in the aromatic region of the Sepia MFA polymeric chain and to suggest a possible ...
Alan R, Katritzky, Novruz G, Akhmedov, Sergey N, Denisenko, Olga V, Denisko   +3 more
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Metal ion content in Sepia officinalis melanin

Marine Chemistry, 1992
Abstract A dissolution procedure for the analysis of the metal content in Sepia officinalis melanin has been optimized and checked against a bovine liver Community Bureau of Reference (BCR) certified reference material. The content of several metal ions has been determined by GF-AAS and ICP-AES techniques in samples of Sepia officinalis melanin ...
SARZANINI, Corrado, MENTASTI, Edoardo, ABOLLINO, Ornella, FASANO, Mauro, AIME, Silvio   +4 more
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NMR Studies of Melanins: Characterization of a Soluble Melanin Free Acid From Sepia Ink

Pigment Cell Research, 1991
This paper deals with the nuclear magnetic resonance characterization of a soluble derivative (melanin free acid) of Sepia melanin obtained by a peroxidative treatment of the parent (insoluble) species. High resolution 13C and 15N solid state NMR spectroscopies allow the assessment of the chemical changes occurring in the macromolecule upon ...
AIME, Silvio, M. FASANO, TERRENO, Enzo, C. J. GROOMBRIDGE   +3 more
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OPTICAL AND THERMAL CHARACTERIZATION OF NATURAL (Sepia officinalis) MELANIN

Photochemistry and Photobiology, 1994
Abstract The optical properties and the thermal diffusivity of natural cuttlefish (Sepia officinalis) melanin have been measured. The optical absorption and scattering properties of melanin particles were determined at 580 nm and 633 nm, using photometric and photothermal techniques.
I A, Vitkin, J, Woolsey, B C, Wilson, R R, Anderson   +3 more
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Ion‐Exchange and Adsorption of Fe(III) by Sepia Melanin

Pigment Cell Research, 2004
Sepia eumelanin is associated with many metal ions, yet little is known about its metal binding capacity and the chemical nature of the binding site(s). Herein, the natural concentrations of metal ions are presented and the ability to remove metals by exposure of the melanin granules to EDTA is quantified. The results reveal that the binding constants
Yan, Liu, Lian, Hong, Valerie R, Kempf, Kazumasa, Wakamatsu, Shosuke, Ito, John D, Simon   +5 more
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Photoprotection of Mammalian Acid-Soluble Collagen by Cuttlefish Sepia Melanin In Vitro

Photochemistry and Photobiology, 1998
AbstractSeveral important clinical conditions can result in close association between the pigment melanin and dermal collagen. Because melanin and its precursors can be chemically reactive in ground and excited states, it is important to know whether the resulting melanin‐collagen interaction results in photoprotection or photoaggression.
J M, Menter, A M, Patta, T D, Hollins, C L, Moore, I, Willis   +4 more
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