Results 71 to 80 of about 111,518 (250)

Isolation of Cinnamic Acid Derivatives from the Bulbs of Allium tripedale

open access: yesAdvanced Biomedical Research, 2018
Background: Allium genus with 750 species is the most diverse genus in the Amaryllidaceae family. Historically, Allium species have been used as medicinal plants, especially for prevention and treatment of cardiovascular diseases and considered as ...
Zahra Chehri   +2 more
doaj   +1 more source

Selective Electrochemical NOx Reduction to N2 for Sustainable Ammonia Energy Systems

open access: yesAdvanced Materials, EarlyView.
Selective electrochemical NOx reduction to N2 offers a promising route to mitigate combustion‐derived NOx emissions in ammonia energy systems. This Perspective links *NO‐mediated pathways, the key intermediate role of N2O, and low‐coverage limitations to the origins of limited N2 selectivity, establishing tandem catalysis and microenvironment ...
Zeliang Wu   +3 more
wiley   +1 more source

Cu‐Pd Dual Single Atoms Promoting Selective CO2 Photoreduction to C2 Products in Seawater

open access: yesAdvanced Materials, EarlyView.
Cu and Pd dual single atoms anchored on TiO2 cooperatively enhance C─C coupling during CO2 photoreduction in seawater. Under xenon‐light irradiation and without a sacrificial reagent/alkaline trapping agent, the catalyst achieves highly selective acetic acid formation.
Elhussein M. Hashem   +15 more
wiley   +1 more source

Effect of Supercritical CO2 Extraction Process Parameters on Chemical and Flavor Compounds of Zanthoxylum bungeanum Oleoresin [PDF]

open access: yesShipin Kexue
In this study, oleoresin was extracted from Zanthoxylum bungeanum produced in Hanyuan, Sichuan by supercritical CO2 extraction. The effect of three process parameters (temperature, pressure and extraction time) on the yield, total phenol, total flavonoid
DONG Ke, TANG Mengmeng, HUANG Ziyi, BAI Chunhui, XING Yong, CHENG Jie, LIU Fuquan, ZHAO Zhifeng
doaj   +1 more source

Gold‐Stabilized Copper Enables Anodic Hydrogen Evolution for Ultralow‐Voltage CO‐to‐Ethylene Electrolysis

open access: yesAdvanced Materials, EarlyView.
Gold‐stabilized copper suppresses hydroxide‐driven deactivation during anodic hydrogen evolution from furfural. Pairing this low‐potential anode with CO‐to‐ethylene electroreduction enables sub‐1 V operation at 400 mA cm−2, high single‐pass CO conversion, and co‐production of ethylene, furoic acid, and a separate hydrogen stream.
Sungjin Park   +18 more
wiley   +1 more source

Inhibitory activities of selected Sudanese medicinal plants on Porphyromonas gingivalis and matrix metalloproteinase-9 and isolation of bioactive compounds from Combretum hartmannianum (Schweinf) bark

open access: yesBMC Complementary and Alternative Medicine, 2017
Background Periodontal diseases are one of the major health problems and among the most important preventable global infectious diseases. Porphyromonas gingivalis is an anaerobic Gram-negative bacterium which has been strongly implicated in the etiology ...
Ebtihal Abdalla M. Mohieldin   +2 more
doaj   +1 more source

Dynamic Mechanical Loading Modulates Extracellular Vesicle Production and Cargo in Meniscus Fibrochondrocytes

open access: yesAdvanced Materials Interfaces, EarlyView.
Dynamic mechanical loading of outer meniscus fibrochondrocytes increases extracellular vesicle (EV) yield and alters EV composition. When applied to progenitor cells, these mechanically primed EVs modulate the expression of matrix‐related genes.
Catherine Cheung   +6 more
wiley   +1 more source

Isolation and Characterization of a New Glycosylated Depside and Other Compounds with Antioxidant Activity from the Flower Buds of

open access: yesNatural Product Communications
Objectives This study focused on the isolation, structural elucidation, and free radical scavenging activities of compounds from the flower buds of Rosa rugosa . Methods The 30% ethanolic extract of R.
Dae-Cheol Choi   +12 more
doaj   +1 more source

25-Hydroxylation of vitamin D3 in the human hepatoma cell lines Hep G2 and Hep 3B.

open access: yesJournal of Lipid Research, 1988
Two human hepatoma cell lines, Hep G2 and Hep 3B, were screened for vitamin D3-25-hydroxylase enzyme activity by incubation with radioactive vitamin D3.
S P Tam   +3 more
doaj   +1 more source

In Situ Photopolymerization of Smectic B Liquid‐Crystalline Electrolytes from Mesogenic Phosphate–Diacrylate/Ionic Liquid Complexes for High‐Performance Soft Ionic Actuators

open access: yesAdvanced Robotics Research, EarlyView.
A flexible liquid‐crystalline electrolyte membrane via in situ photopolymerization of a phosphate‐functionalized mesogen, ionic liquid, and diacrylate monomer is developed. The resulting smectic B (SmB)‐phase structure enables 2D ion transport with high conductivity (10−4 S cm−1).
Chengyang Liu, Masafumi Yoshio
wiley   +1 more source

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