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Complete Breakup of Liquids into Ultrafine Droplets by Grid Turbulence.
Nano Lett
January 2025
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Ultrafine droplets are crucial in materials processing and nanotechnology, with applications in nanoparticle preparation, water evaporation, nanodrug delivery, nanocoating, among numerous others. While the potential of turbulent gas flow to enhance liquid breakup is acknowledged, constructing turbulence-driven atomizers for ultrafine droplets remains challenging. Herein, we report the innovation of grid-turbulence atomization (GTA), which employs a rotating mesh to deliver liquid and an air knife to spray ultrafine droplets.
View Article and Find Full Text PDFAsymmetric photoreactions catalyzed by chiral ketones.
RSC Adv
January 2025
Shaanxi Province Key Laboratory of Catalytic, School of Chemical and Environmental Science, Shaanxi University of Technology Hanzhong 723001 P. R. China
Asymmetric catalytic reactions are essential for synthesizing chiral drugs and fine chemicals, with their stereoselectivity influenced significantly by interactions between catalysts and substrates. Ketone catalysts have garnered considerable attention in the realm of asymmetric photoreactions because of their highly controllable structures, ease of availability, and environmental friendliness. This review highlights the application of various reported ketone catalysts in a range of asymmetric photoreactions, including [2 + 2] photocycloaddition, photoderacemization, photochemical rearrangement, asymmetric electrophilic amination, and asymmetric alkylation of aldehydes.
View Article and Find Full Text PDFGraft-repositioning technique using infusion and small bubbles during Descemet's membrane endothelial keratoplasty.
BMC Ophthalmol
January 2025
Department of Ophthalmology, Department of Visual Sciences, Nihon University School of Medicine, Itabashi, Tokyo, Japan.
Background: Descemet's membrane endothelial keratoplasty (DMEK) is a highly effective procedure for corneal endothelial dysfunction; however, once a DMEK graft is deployed, repositioning can be challenging. Therefore, this study aimed to evaluate the efficacy of a technique that utilizes infusion and small air bubbles to reposition a misaligned deployed graft.
Methods: This retrospective interventional case series enrolled patients who underwent DMEK between January 2022 and July 2023, including cases where the DMEK graft was attached and unfolded in off-center positions".
The Danish Drowning Cohort: Utstein-style data from fatal and non-fatal drowning incidents in Denmark.
BMC Med Res Methodol
January 2025
Prehospital Center Region Zealand, Ringstedgade 61, 14th Floor, Naestved, 4700, Denmark.
Background: Effective interventions to reduce drowning incidents require accurate and reliable data for scientific analysis. However, the lack of high-quality evidence and the variability in drowning terminology, definitions, and outcomes present significant challenges in assessing studies to inform drowning guidelines. Many drowning reports use inappropriate classifications for drowning incidents, which significantly contributes to the underreporting of drowning.
View Article and Find Full Text PDFIndoor ventilation frequency and cognitive function among Chinese old adults: the multiple mediation effect of anxiety and self-rated health.
BMC Geriatr
January 2025
Nursing School, Medical College of Hengyang, University of South China, Hengyang, China.
Background: China is experiencing an increasingly serious aging population. Cognitive function is an important factor and guarantee for the quality of life of older people. Therefore, to achieve healthy aging, this study aimed to examine the sequential multiple mediating effects of indoor ventilation frequency and cognitive function on anxiety and self-rated health in the Chinese older people population.
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