Results 41 to 50 of about 1,670,680 (282)

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

open access: yesAdvanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li   +9 more
wiley   +1 more source

Comparison of Phenolic Content and Antioxidant Activity of the Three Date Palm Varieties of Hajmohamadi, Kabkab, and Khasi (Phoenix dactylifera L.) in Different Ripening Stages [PDF]

open access: yesJournal of Kerman University of Medical Sciences, 2014
Background & Aims: Date palm fruit is one of the highly consumed foods with antioxidant compounds and high nutritive value in Iran. In this study, total phenolic compounds and antioxidant capacity of three varieties of date palm (Hajmohamadi, Kabkab, and
Masoud Veissi   +3 more
doaj  

Evaluasi Kadar Senyawa Fenolat, Flavonoid Total, serta Aktivitas Antioksidan Secara in vitro dalam Ekstrak Metanol Bawang Dayak (Eleutherine palmifolia (L.) Merr

open access: yesKovalen: Jurnal Riset Kimia, 2022
Dayak onion bulbs are a plant originating from Kalimantan which has been used for generations to treat various diseases. This plant is quite easy to grow and develop in many places in Indonesia.
Farida Laila   +3 more
doaj   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon   +4 more
wiley   +1 more source

Hybrid Ferroelectric Tunnel Junctions with Intrinsic Nonlinearity and Self‐Rectification via Interfacial Reconstruction

open access: yesAdvanced Functional Materials, EarlyView.
Rapid thermal annealing reconstructs the BCFO/Nb:STO interface into an atomically thin reconstructed interfacial layer, which reshapes the tunneling barrier and converts a high‐TER ferroelectric tunnel junction into an intrinsically nonlinear, self‐rectifying device.
Hojin Lee   +21 more
wiley   +1 more source

Anemia ferropênica no adulto: causas, diagnóstico e tratamento Iron deficiency anaemia in the adult: causes, diagnosis and treatment

open access: yesRevista Brasileira de Hematologia e Hemoterapia, 2010
A deficiência de ferro, especificamente a anemia ferropênica, permanece como uma das deficiências nutricionais mais frequentes e importantes no mundo.
Rodolfo D. Cançado, Carlos S. Chiattone
doaj  

Synthesis and Antioxidant Activity of Novel Biginelli Adducts with Phenolic Fragments

open access: yesApplied Sciences
In this work, eco-friendly ceric ammonium nitrate (CAN) and ferric chloride hexahydrate catalysts in ethanol/acetonitrile systems were used to efficiently synthesize novel dihydropyrimidinone (-thione) derivatives via the Biginelli reaction. The obtained
Olga V. Snastina   +3 more
doaj   +1 more source

Synthesis and Antimicrobial and Antioxidant Activities of Some New 5-(2-Methyl-1H-indol-3-yl)-1,3,4-oxadiazol-2-amine Derivatives

open access: yesJournal of Chemistry, 2013
A series of 5-(2-methyl-1H-indol-3-yl)-1,3,4-oxadiazol-2-amine derivatives (3–5) were synthesized. These previously unknown compounds were characterized by spectral studies and elemental analysis.
Anand R. Saundane   +2 more
doaj   +1 more source

Synthesis of New 2,5-Di-substituted 1,3,4-Oxadiazoles Bearing 2,6-Di-tert-butylphenol Moieties and Evaluation of Their Antioxidant Activity

open access: yesMolecules, 2014
Eleven new 2,6-di-tert-butyl-4-(5-aryl-1,3,4-oxadiazol-2-yl)phenols 5a–k were synthesized by reacting aryl hydrazides with 3,5-di-tert butyl 4-hydroxybenzoic acid in the presence of phosphorus oxychloride. The resulting compounds were characterized based
Raied M. Shakir   +2 more
doaj   +1 more source

Engineered Nanoplatforms Targeting Activated Hepatic Stellate Cells for Liver Fibrosis Therapy via TGF‐β Axis Inhibition and Ferroptosis Induction

open access: yesAdvanced Healthcare Materials, EarlyView.
FeS‐VA@lanifibranor (FVL), an activated hepatic stellate cell (aHSC)‐targeted nanoplatform comprising vitamin A‐functionalized two‐dimensional iron sulfide nanosheets and lanifibranor, is engineered for precision therapy of liver fibrosis. FVL suppresses the TGF‐β signaling pathway by inhibiting SMAD2/3 phosphorylation and induces ferroptosis in aHSCs,
Yinuo Yang   +11 more
wiley   +1 more source

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