Results 51 to 60 of about 6,578 (220)

Radioactivity to Rethink the Earth's Energy Balance

Global Challenges, 2021
This contribution invites to re‐examine the whole matter of radioactivity, reconsidering it from the point of view of a realistic source of energy. State‐of‐the‐art and technical aspects are briefly illustrated in this note that aims to open a discussion
Maria Letizia Terranova
doaj   +1 more source

Eumelanin‐Enhanced Photothermal Disinfection of Contact Lenses Using a Sustainable Marine Nanoplatform Engineered with Electrospun Nanofibers

Advanced Healthcare Materials
Bacterial keratitis (BK) is a severe eye infection commonly associated with Staphylococcus aureus (S. aureus), posing a significant risk to vision, especially among contact lens wearers.
Magdalena Bartolewska, Alicja Kosik-Kozioł, Zbigniew Korwek, Zuzanna J. Krysiak, D. Montroni, Maciej Mazur, G. Falini, F. Pierini   +7 more
semanticscholar   +1 more source

Disruption of the reciprocal inhibitory relationship between cell proliferation and melanogenesis in pet murine melanoma cells by ultraviolet radiation

Frontiers in Veterinary Science
This study investigates the relationship between intracellular eumelanin content and proliferation of melanoma cells derived from pet murine under ultraviolet (UV) radiation.
Quanzhou Lv, Enchang Liang, Liangshuo Bai, Siqi Huang, Jiran Song, Hui Yin, Yan Li   +6 more
doaj   +1 more source

Kaxiras’s Porphyrin: DFT Modeling of Redox-Tuned Optical and Electronic Properties in a Theoretically Designed Catechol-Based Bioinspired Platform

Biomimetics, 2017
A detailed computational investigation of the 5,6-dihydroxyindole (DHI)-based porphyrin-type tetramer first described by Kaxiras as a theoretical structural model for eumelanin biopolymers is reported herein, with a view to predicting the technological ...
Orlando Crescenzi, Marco d’Ischia, Alessandra Napolitano   +2 more
doaj   +1 more source

En Route to a Chiral Melanin: The Dynamic “From-Imprinted-to-Template” Supramolecular Role of Porphyrin Hetero-Aggregates During the Oxidative Polymerization of L-DOPA

Frontiers in Chemistry, 2020
Chiral porphyrin hetero-aggregates, produced from meso-tetrakis(4-N-methylpyridyl) porphyrin H2T4 and copper(II) meso-tetrakis(4-sulfonatophenyl)porphyrin CuTPPS by an imprinting effect in the presence of L-3,4-dihydroxyphenylalanine (L-DOPA), are shown ...
Massimiliano Gaeta, Rosalba Randazzo, Valentina Villari, Norberto Micali, Alessandro Pezzella, Roberto Purrello, Marco d'Ischia, Alessandro D'Urso   +7 more
doaj   +1 more source

Genetic Diversity, Adaptation, Wild Introgression, and Coat Color Mutation of Golden Yak

Animal Research and One Health, EarlyView.
Genetic diversity, adaptation, wild introgression, and coat color mutation of golden yak from two populations on the Qinghai‐Xizang Plateau. ABSTRACT The golden yak lives on the Qinghai‐Xizang Plateau with a golden coat and adapts to high altitudes and strong ultraviolet environment. The golden coat is a prominent phenotype in many domesticated species,
Huixuan Yan, Jialei Chen, Chuzhao Lei, Fengwei Zhang, Shunzhong He, Weiru Song, Hongyan Ma, Shuling Li, Guomei Li, Laba Yongcuo, Jianlin Han, Johannes A. Lenstra, Qiang Zhang, Rende Song, Basang Wangdui, Ningbo Chen   +15 more
wiley   +1 more source

Melanin-Based Coatings as Lead-Binding Agents

Bioinorganic Chemistry and Applications, 2012
Interactions between metal ions and different forms of melanin play significant roles in melanin biochemistry. The binding properties of natural melanin and related synthetic materials can be exploited for nonbiological applications, potentially ...
Karin Sono, Diane Lye, Christine A. Moore, W. Christopher Boyd, Thomas A. Gorlin, Jason M. Belitsky   +5 more
doaj   +1 more source

Unraveling Eumelanin Radical Formation by Nanodiamond Optical Relaxometry in a Living Cell

Journal of the American Chemical Society
Defect centers in a nanodiamond (ND) allow the detection of tiny magnetic fields in their direct surroundings, rendering them as an emerging tool for nanoscale sensing applications.
Qi Lu, Berlind Vosberg, Zhenyu Wang, P. Balasubramanian, Maabur Sow, C. Volkert, Raúl Gonzalez Brouwer, Ingo Lieberwirth, R. Graf, Fedor Jelezko, M. Plenio, Yingke Wu, Tanja Weil   +12 more
semanticscholar   +1 more source

Identification of black sturgeon caviar pigment as eumelanin.

Food Chemistry, 2021
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
L. Panzella, Kenneth Benning, D. Nesbeth, Brunella Setaro, G. D’Errico, A. Napolitano, M. d’Ischia   +6 more
semanticscholar   +1 more source

Photovoltaic properties of PSi impregnated with eumelanin [PDF]

Nanoscale Research Letters, 2012
A bulk heterojunction of porous silicon and eumelanin, where the columnar pores of porous silicon are filled with eumelanin, is proposed as a new organic-inorganic hybrid material for photovoltaic applications. The addition of eumelanin, whose absorption in the near infrared region is significantly higher than porous silicon, should greatly enhance the
Mula G., Manca L., Setzu S., PEZZELLA, ALESSANDRO   +3 more
openaire   +4 more sources