Results 61 to 70 of about 6,853 (289)

Caracterização da melanina natural extraída do cabelo (eumelanina): afinidade pelo íon Fe(III) e interações com ácido gálico [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós Graduação em QuímicaMelanina é um pigmento natural que é produzido a partir da oxidação da tirosina sob ação de enzimas.
Costa, Thiago Guimarães
core  

Advancing Fruit Bioimpedance Monitoring With Sustainable, Soft, And Bio‐Based Electrodes Beyond ECG

Advanced Electronic Materials, EarlyView.
Electrical impedance spectroscopy enables non‐destructive fruit quality monitoring, but conventional ECG and needle electrodes compromise signal stability, fruit physiology, and sustainability. This perspective highlights the transition toward soft, biocompatible, and biodegradable electrode interfaces based on natural substrates, bio‐derived ...
Sundus Riaz, Ahmed Rasheed, Angelo Zanella, Almudena Rivadeneyra, Paolo Lugli, Luisa Petti, Pietro Ibba   +6 more
wiley   +1 more source

MELANINS PRODUCTION FROM ENKEPHALINS BY TYROSINASE

, 1992
Leu-enkephalin and Met-enkephalin are oxidized in vitro by mushroom and sepia tyrosinase giving rise to synthetic melanins whose production is dependent on incubation time and on enzyme concentration.
M. A. Rosei, C. De Marco, MOSCA, Luciana
core   +1 more source

Retinal Vessel Segmentation: A Comprehensive Review From Classical Methods to Deep Learning Advances (1982–2025)

Advanced Intelligent Systems, EarlyView.
Four decades of retinal vessel segmentation research (1982–2025) are synthesized, spanning classical image processing, machine learning, and deep learning paradigms. A meta‐analysis of 428 studies establishes a unified taxonomy and highlights performance trends, generalization capabilities, and clinical relevance.
Avinash Bansal, Jan Kubíček, Jana Bahrová, Alice Varyšová, Martin Augustýnek, Marek Penhaker, Juraj Timkovič   +6 more
wiley   +1 more source

Promelanogenic Effects by an Annurca Apple-Based Natural Formulation in Human Primary Melanocytes

Clinical, Cosmetic and Investigational Dermatology, 2021
Maria Grazia Ferraro,1 Marialuisa Piccolo,1 Alessandro Pezzella,2 Fabrizia Guerra,1 Francesco Maione,1 Gian Carlo Tenore,1 Rita Santamaria,1 Carlo Irace,1 Ettore Novellino1 1Department of Pharmacy, School of Medicine and Surgery, University of Naples ...
Ferraro MG, Piccolo M, Pezzella A, Guerra F, Maione F, Tenore GC, Santamaria R, Irace C, Novellino E   +8 more
doaj  

Comparison of Clinical Outcomes of Gingival Depigmentation using Diode Laser versus Scalpel Surgery: A Prospective Interventional Study [PDF]

Journal of Clinical and Diagnostic Research
Introduction: Pigmentation of the gingiva, when it is not related to the skin complexion, is a dampening factor in an otherwise acceptable smile window.
Ambili Gopalakrishnan, RM Baiju, Bindu R Nayar, MR Sreelakshmi, B Jithin   +4 more
doaj   +1 more source

Some biochemical properties of melanins from opioid peptides

, 1994
Opioid peptides are converted by mushroom tyrosinase into melanin-like compounds retaining the peptide moiety (opio-melanins). Opio-melanins, owing to the presence of the linked aminoacids and in contrast with DOPA-melanin, are soluble compound.
BLARZINO, Carla, COCCIA, Raffaella, M.A. Rosei, G. Musci, MOSCA, Luciana, Musci, Giovanni, DE MARCO, Carlo   +6 more
core   +1 more source

Atypical Clinical Course of Griscelli Syndrome Type 2 With Primarily Neurologic Presentation and Adult‐Onset in a 46‐Year‐Old Male

American Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Griscelli Syndrome Type 2 (GS2) is a rare autosomal recessive disorder caused by pathogenic mutations in the RAB27A gene. Typically, it is characterized by cutaneous hypopigmentation, immunodeficiency, with or without neurological abnormalities secondary to hemophagocytic lymphohistiocytosis (HLH). Without treatment, GS2 often results in fatal
Dzhoy Papingi, Michael Kutsche, Helena Lichtenfeld, Fanny Kortüm, Angela Abicht, Laura Herrmann, Theresia Herget   +6 more
wiley   +1 more source

Electron spin resonance spectrometry of fungal melanins

, 1985
5 pages, 4 tables, 34 references.We investigated electron spin resonance (ESR) parameters (free radical concentrations, g values, and linewidths) of a variety of fungal melanins.
Shafizadeh, F., Sáiz-Jiménez, Cesáreo
core   +1 more source

Mandible composition and properties in two selected praying mantises (Insecta, Mantodea)

The Anatomical Record, EarlyView.
Abstract Insects process their food with their cuticle‐based mouthparts. These feeding structures reflect their diversity and can, in some cases, showcase adaptations in material composition, mechanical properties, and shape to suit their specific dietary preferences.
Malo Roze, Stanislav N. Gorb, Timo Zeimet, Wencke Krings   +3 more
wiley   +1 more source