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Droplet-Based EPR Spectroscopy for Real-Time Monitoring of Liquid-Phase Catalytic Reactions.
Small Methods
January 2025
Institute of Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 1, Zürich, 8093, Switzerland.
In situ monitoring is essential for catalytic process design, offering real-time insights into active structures and reactive intermediates. Electron paramagnetic resonance (EPR) spectroscopy excels at probing geometric and electronic properties of paramagnetic species during reactions. Yet, state-of-the-art liquid-phase EPR methods, like flat cells, require custom resonators, consume large amounts of reagents, and are unsuited for tracking initial kinetics or use with solid catalysts.
View Article and Find Full Text PDFAscorbic acid is involved in melatonin-induced salinity tolerance of maize ( L.) by regulating antioxidant and photosynthetic capacities.
Photosynthetica
January 2025
College of Agronomy, Specialty Corn Institute, Shenyang Agricultural University, 110866 Shenyang, Liaoning Province, China.
Melatonin (MT), an indole compound, can boost plant growth under abiotic stress conditions. This experiment aims to elucidate the synergistic effect of MT and ascorbic acid (AsA) in mitigating salinity stress by assessing the photosynthetic and antioxidant capacity of the maize inbred lines H123 and W961. The results indicated that exogenous MT and AsA significantly improved photosynthetic efficiency and biomass of maize under salinity stress.
View Article and Find Full Text PDFBlue light irradiation combined with low-temperature storage further enhances postharvest quality of strawberries through improving antioxidant defense and cell wall metabolic activities.
Food Chem X
January 2025
College of Horticulture, Hebei Agricultural University, Baoding 071001, China.
Few studies have explored the impact of blue light-emitting diode (BL) irradiation combined with different storage temperatures on antioxidant defense and cell wall metabolic activities related to the quality deterioration of postharvest strawberries. This study investigates the effects of BL exposure as a non-chemical preservation strategy to improve the postharvest quality of strawberries stored at 22 °C and 8 °C. Over a 10-day storage period, BL irradiation significantly reduced respiratory and ethylene production rates, while preserving fruit firmness and increasing the contents of soluble sugar and total phenol at both temperatures.
View Article and Find Full Text PDFA Chiral Sensing Platform Based on a Starfish-Shaped AuCu Alloy for Chiral Analysis.
Anal Chem
January 2025
Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
Designing alloys with intrinsic chirality for chiral analysis is an interesting subject, since most alloys are achiral. Here, a starfish-shaped AuCu alloy is facilely prepared through simultaneous reduction of chloroauric acid (HAuCl) and copper chloride (CuCl) by l-ascorbic acid (l-AA). The resultant AuCu alloy exhibits fascinating chirality due to the chiral lattice distortion generated in the alloy.
View Article and Find Full Text PDFOutcome of Er, Cr:YSGG laser and antioxidant pretreatments on bonding quality to caries-induced dentin.
BMC Oral Health
January 2025
Conservative Dentistry Department, Faculty of Oral and Dental Medicine, Future University, Cairo, Egypt.
Background: This study aimed to assess the influence of different pretreatment protocols and antioxidants application on the shear bond strength (SBS) of universal adhesive to sound (SoD) and caries-induced dentin (CID).
Methods: One hundred and twenty posterior teeth had their occlusal enamel removed, then the specimens were divided into two main groups according to dentin substrates; SoD and CID, three subgroups according to pretreatments protocols control (no pretreatment), NaOCl-treated, and Er, Cr:YSGG-treated and two divisions according to antioxidant application (with and without sodium ascorbate (SA) application). All-Bond Universal (ABU) universal adhesives was applied in self-etch (SE) mode then resin composite discs were built.
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