Results 61 to 70 of about 70,745 (263)

Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices

Advanced Science, EarlyView.
Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen, Wei Zeng, Zherui Zhao, JiYu Zhao, Ziyan Huang, Zhuo Chen, Kui Zhou, Guanglong Ding, Su‐Ting Han, Ye Zhou   +9 more
wiley   +1 more source

Relations between polyphenols content and antioxidant activity in vine grapes and leaves

Czech Journal of Food Sciences, 2008
The occurrence and content of some polyphenols and the antioxidant activity of compounds present in grape berries, stems and leaves of Vitis vinifera L. were evaluated. Three white and three blue varieties of grapevine were investigated.
Josef BALÍK, Marie KYSELÁKOVÁ, Naděžda VRCHOTOVÁ, Jan TŘÍSKA, Michal KUMŠTA, Jaromír VEVERKA, Pavel HÍC, Jiří TOTUŠEK, Danuše LEFNEROVÁ   +8 more
doaj   +1 more source

Modeling the Physical Characteristics of Ultrasound Pretreated Dialium guineense Whole Fruits Using Neural Network Pattern Recognition Model

AgriFood: Journal of Agricultural Products for Food, EarlyView.
The study of Physical characteristics of agricultural materials is necessary for the design of processes and machines for food production. Length, width, thickness, sphericity, unit mass, and aspect ratio were the physical characteristics of ultrasound pretreated Dialium guineense whole fruits subjected to Neural network modeling.
Mfrekemfon Akpan, Uduak George, Okon Esua   +2 more
wiley   +1 more source

Multi-experimental characterisation of grape skin extracts

Czech Journal of Food Sciences, 2008
Grape skins contain a plenty of different flavonoids, most of them revealing significant antioxidant properties. In this contribution, a complex study is presented of grape skin ethanol extracts, prepared from grape skins of two vine grape varieties ...
Lenka ŠŤAVÍKOVÁ, Martin POLOVKA, Barbora HOHNOVÁ, Jana ZEMANOVÁ   +3 more
doaj   +1 more source

INTERCALATION OF FREE RADICAL, DPPH, INTO MONTMORILLONITE

Analytical Sciences, 1991
The adosorption of DPPH in the interlayer of sodium montmorillonite and sodium saponite have been investigated by ESR. As the results, DPPH molecules dimerize to form diamagnetic species in montmorillonite, whereas DPPH molecules in saponite exist as isolated stable free radical species at room temperature.
Yuji NAKAMURA, Tokuko WATANABE
openaire   +2 more sources

Grape Seed Polyphenols Enhance Antioxidant Activity and Prolong the Lifespan of Caenorhabditis elegans Through SKN‐1/Nrf2 Pathway

AgriFood: Journal of Agricultural Products for Food, EarlyView.
GSP extends C. elegans lifespan, enhances stress resistance and reproduction, boosts antioxidant defenses (↑SOD/CAT/GSH‐Px, ↓ROS), remodels glycolysis/TCA/one‐carbon metabolism dose‐dependently, and activates SKN‐1/Nrf2 and H3K4 methylation—linking redox control to epigenetic modulation.
Boya Ouyang, Quanyong Wu, Fei Liu, Jingyimei Liang, Wanning Ma, Yuxuan Zhao, Hui Cao, Jianbo Xiao   +7 more
wiley   +1 more source

Antioxidant activity of selected phenols and herbs used in diets for medical conditions

Czech Journal of Food Sciences, 2010
The antioxidant capacity of some herbs used in dietology practice was determined by the DPPH free radical method, which was calibrated with ascorbic acid.
Diana Chrpová, Lenka Kouřimská, Michael Harry Gordon, Veronika Heřmanová, Iva Roubíčková, Jan Pánek   +5 more
doaj   +1 more source

Aloe vera–Based Green Synthesis of Silver Nanoparticles With Characterization, Potent Antibacterial and Antioxidant Properties

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Green synthesis has emerged as a suitable alternative to the traditional method for manufacturing nanoparticles (NPs) as it provides a safer, sustainable, healthy, and environmental path for the NPs synthesis. Silver nanoparticles (AgNPs) were prepared using a green method with locally sourced Aloe vera leaf extract.
Janaki Baral, Sushant Timalsina, Sujan Dhungana, Laxmi Tiwari, Devendra Khadka, Bhoj Raj Poudel   +5 more
wiley   +1 more source

Antioxidant capacity and antioxidants of strawberry, blackberry, and raspberry leaves

Czech Journal of Food Sciences, 2011
The total phenolic content (Folin-Ciocalteu method), free radical scavenging ability expressed as DPPH value, ferric reducing antioxidant capacity (FRAP), and oxygen radical absorbance capacity (ORAC) were determined in water extracts of leaves from ...
Lucie Buřičová, Mirjana Andjelkovic, Anna Čermáková, Zuzana Réblová, Ondřej Jurček, Erkki Kolehmainen, Roland Verhé, František Kvasnička   +7 more
doaj   +1 more source

Effects of Cellulase and Lactobacillus plantarum Supplementation on Fermentation Characteristics, In Situ Degradability, and Microbial Community Dynamics of Apple Pomace Silage

Animal Research and One Health, EarlyView.
This study aimed to investigate the effects of cellulase and Lactobacillus plantarum on the silage quality, in situ digestibility, and microbial communities of apple pomace silage. The combined supplementation of cellulase and Lactobacillus plantarum in apple pomace silage improved fermentation quality and enhanced rumen utilization efficiency.
Zhuangzhuang Liu, Xiongfei Zhang, Fengbo Sun, Junhu Yao, Xinjian Lei   +4 more
wiley   +1 more source