Results 41 to 50 of about 169,076 (377)

High refractive index of melanin in shiny occipital feathers of a bird of paradise [PDF]

open access: yes, 2015
Male Lawes's Parotia, a bird of paradise, use the highly directional reflection of the structurally colored, brilliant-silvery occipital feathers in their courtship display.
BD Wilts   +18 more
core   +2 more sources

Melanin ‘dust’ or ‘ghost’? [PDF]

open access: yesExperimental Dermatology, 2016
To definitely verify the dogma of ‘melanin dust’ in the stratum corneum, Tobin et al have now reported a careful review of the literature with a vis-à-vis of the Fontana Masson (FM) and Von Kossa (VK) histochemical methods plus the Warthin-Starry (WS) stain on very thin cryosections of normal human skin and mouse pelage skin epidermis lacking ...
D'ISCHIA, MARCO   +3 more
openaire   +6 more sources

Melanin-Associated Synthesis of SERS-Active Nanostructures and the Application for Monitoring of Intracellular Melanogenesis

open access: yesNanomaterials, 2017
Melanin plays an indispensable role in the human body. It serves as a biological reducer for the green synthesis of precious metal nanoparticles. Melanin–Ag nanocomposites were successfully produced which exhibited very strong surface-enhanced Raman ...
Haixin Dong   +8 more
doaj   +1 more source

Experimental and theoretical evidence for molecular forces driving surface segregation in photonic colloidal assemblies [PDF]

open access: yes, 2019
Surface segregation in binary colloidal mixtures offers a simple way to control both surface and bulk properties without affecting their bulk composition. Here, we combine experiments and coarse-grained molecular dynamics (CG-MD) simulations to delineate
Dhinojwala, Ali   +8 more
core   +1 more source

Melanin levels in relation to vitamin D among first-generation immigrants from different ethnic groups and origins: A comparative national Canadian cross-sectional study

open access: yesFrontiers in Medicine, 2023
IntroductionImmigrants to Western countries tend to have darker skin than native-born populations. We examined the relationship between skin melanin and serum vitamin D (vitD) [S-25(OH)D] levels and explored whether melanin levels explained S-25(OH)D ...
Said Yousef   +13 more
doaj   +1 more source

Human hypocretin and melanin-concentrating hormone levels are linked to emotion and social interaction. [PDF]

open access: yes, 2013
The neurochemical changes underlying human emotions and social behaviour are largely unknown. Here we report on the changes in the levels of two hypothalamic neuropeptides, hypocretin-1 and melanin-concentrating hormone, measured in the human amygdala ...
Behnke, Eric J   +9 more
core   +1 more source

Structural and Functional Tailoring of Melanin-Like Polydopamine Radical Scavengers

open access: yes, 2020
Melanin is a ubiquitous but poorly understood polymeric, dark brown to black pigment biomaterial found both in nature and by organic synthesis.
Peng Yang   +3 more
semanticscholar   +1 more source

Evaluation of gingival melanin pigmentation in pediatric population– An observational study

open access: yesJournal of Family Medicine and Primary Care, 2019
Aim: The aim of this study is to evaluate the gingival melanin pigmentation in the Indian pediatric population. The aim of this study is to find any association between age and melanin distribution, age and intensity of melanin distribution, sex and ...
Jerusha Santa Packyanathan, G Lavanya
doaj   +1 more source

Genomic Analysis and Assessment of Melanin Synthesis in Amorphotheca resinae KUC3009

open access: yesJournal of Fungi, 2021
This study reports the draft genome of Amorphotheca resinae KUC30009, a fungal isolate with promising industrial-scale melanin production potential. The mechanisms for melanin or melanin-related pigment formation of this strain were examined through ...
Jeong-Joo Oh   +7 more
doaj   +1 more source

From Extraction to Advanced Analytical Methods: The Challenges of Melanin Analysis

open access: yesInternational Journal of Molecular Sciences, 2019
The generic term “melanin“ describes a black pigment of biological origin, although some melanins can be brown or even yellow. The pigment is characterized as a heterogenic polymer of phenolic or indolic nature, and the classification of eu-, pheo- and ...
I. Pralea   +11 more
semanticscholar   +1 more source

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