Results 21 to 30 of about 1,443 (177)

Preservational modes of some ichthyosaur soft tissues (Reptilia, Ichthyopterygia) from the Jurassic Posidonia Shale of Germany

Palaeontology, Volume 66, Issue 4, July/August 2023., 2023
Abstract Konservat‐Lagerstätten, such as the Toarcian (Early Jurassic) Posidonia Shale of southwestern Germany, are renowned for their spectacular fossils. Ichthyosaur skeletons recovered from this formation are frequently associated with soft tissues; however, the preserved material ranges from three‐dimensional, predominantly phosphatized structures ...
Randolph G. De La Garza, Peter Sjövall, Rolf Hauff, Johan Lindgren   +3 more
wiley   +1 more source

An overview of recent advances in polymer composites with improved UV‐shielding properties

Journal of Applied Polymer Science, Volume 140, Issue 14, April 10, 2023., 2023
Abstract Owing to their competitive price, ease of processability, and rust resistance, polymers are the most extensively used materials in everyday life. However, consistent exposure to ultraviolet (UV) radiation can lead to the degradation and discoloration of polymeric materials.
Tanyaradzwa S. Muzata, Amanuel Gebrekrstos, Jonathan Tersur Orasugh, Suprakas Sinha Ray   +3 more
wiley   +1 more source

Biosourced quinones for high-performance environmentally benign electrochemical capacitors via interface engineering

Communications Chemistry, 2022
Biosourced and biodegradable organic electrode materials are investigated for environmentally benign energy storage, but their performance at higher current density is often poor.
Abdelaziz Gouda, Alexandre Masson, Molood Hoseinizadeh, Francesca Soavi, Clara Santato   +4 more
doaj   +1 more source

Cloning, Characterization, and Expression Prolife Analysis of Tyrosinase Genes: Insights into Black Shell Formation in Cyclina sinensis

Aquaculture Research, Volume 2023, Issue 1, 2023., 2023
Shell colors that exhibit a positive relationship with excellent traits can be employed as marker colors for breeding new varieties of bivalves. The clam Cyclina sinensis is an economically important marine bivalve that has three main colors: black, white, and purple.
Yuyan Sun, Xin Shan, Desheng Li, Xuxiao Liu, Zongao Han, Junjie Qin, Pan Qiu, Bin Guan, Leilei Tan, Min Wei, Zhiguo Dong, Hisham Abdelrahman   +11 more
wiley   +1 more source

Preparation of Eumelanin‐Encapsulated Stereocomplex Polylactide Nano/Microparticles for Degradable Biocompatible UV‐Shielding Products

Nanomaterials and Nanotechnology, Volume 2023, Issue 1, 2023., 2023
The role of eumelanin as a natural pigment in protecting human skin from ultraviolet (UV) light has drawn vast interest in the research and industrial community. Encapsulation of the compound by various shell materials has been extensively studied to optimize and prolong its shielding efficiency from UV penetration through the skin.
Oceu Dwi Putri, Atitsa Petchsuk, Suthawan Buchatip, Wilairat Supmak, Chariya Kaewsaneha, Kamonchanok Thananukul, Bunthoeun Nim, Sinan Bayram, Kanjana Thumanu, Pakorn Opaprakasit, Leander Tapfer   +10 more
wiley   +1 more source

Melanocore uptake by keratinocytes occurs through phagocytosis and involves protease‐activated receptor‐2 internalization

Traffic, Volume 23, Issue 6, Page 331-345, June 2022., 2022
We investigated the endocytic route followed by melanocores and melanosomes during internalization by keratinocytes. Depletion of critical proteins involved in actin‐dependent uptake mechanisms, together with inhibition of Rac1‐dependent signaling pathways or macropinocytosis suggest that melanocores are internalized by phagocytosis, whereas ...
Hugo Moreiras, Liliana Bento‐Lopes, Matilde V. Neto, Cristina Escrevente, Luís C. Cabaço, Michael J. Hall, José S. Ramalho, Miguel C. Seabra, Duarte C. Barral   +8 more
wiley   +1 more source

Effects of dietary supplementation with filamentous microalgae (Oedocladium sp. or Tribonema ultriculosum) on growth performance, fillet fatty acid composition, skin pigmentation, and immune response of yellow catfish Pelteobagrus fulvidraco

Journal of the World Aquaculture Society, Volume 52, Issue 6, Page 1273-1289, December 2021., 2021
Abstract A 40‐day feeding trial was conducted to investigate the effect of dietary microalgae Oedocladium sp. or Tribonema ultriculosum supplementation on growth performance, fillet fatty acid composition, skin pigmentation, and immune response of yellow catfish Pelteobagrus fulvidraco.
Weijun Chen, Yu Wang, Danxiang Han, Dong Han, Xiaoming Zhu, Shouqi Xie, Feiping Long, Jing Jia, Qiang Hu   +8 more
wiley   +1 more source

The Photophysics and Photochemistry of Melanin‐ Like Nanomaterials Depend on Morphology and Structure

Chemistry – A European Journal, Volume 27, Issue 66, Page 16309-16319, November 25, 2021., 2021
Melanin‐like materials can be easily prepared from simple precursors upon controlled oxidation/polymerization. In the resulting system, species with different structure and morphology coexist and interact. The overall photophysical and photochemical properties depend in part on the nature of the chromophores formed but also, to a large extent, on the ...
Alexandra Mavridi‐Printezi, Arianna Menichetti, Moreno Guernelli, Marco Montalti   +3 more
wiley   +1 more source

Electron microscopic studies of various cells in the alveolar wall of mice with special reference to spheroid alveolar epithelial cells after intravenous injection of squid-ink (sepia-melanin) solution [PDF]

, 1977
The effect of an intravenous injection of squid-ink (sepia-melanin) solution on adult mouse spheroid alveolar epithelial cells was observed by the electron microscope.
Suwa, Kiichi
core   +1 more source

Sepia officinalis ink mitigates gastric ulcer via modulation of antioxidant/anti-inflammatory pathways

Beni-Suef University Journal of Basic and Applied Sciences, 2022
Background Sepia officinalis ink is a bioactive secondary metabolite rich in melanin granules, which has a wide range of nutritional and therapeutic values and also has been used to prevent various gastrointestinal disorders.
Shimaa A. Sadek
doaj   +1 more source