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Sacrificial Layer for Sintering Enhancements of Ceramic, Semiconductor, and Metal Films: A Universal Strategy.
Small
January 2025
School of Energy and Power Engineering, Beihang University, Beijing, 100191, China.
The manufacturing of thin films through selective laser sintering of micro/nanoparticles is an emerging technology that has been developing rapidly over the last two decades owing to its digitization, efficiency, and good adaptability to various materials. However, high-quality laser sintering of different materials remains a challenge: ceramic particles are difficult to be sintered due to low absorbance; metallic particles are prone to oxidation; semiconductor particles are difficult to process for performance enhancement due to high stress. In this work, a new approach is proposed that employs an additional Indium Tin Oxide (ITO) sacrificial layer to assist laser sintering of different functional materials, which detaches after sintering without contaminating the target material.
View Article and Find Full Text PDFUnveiling the Contribution of Hydrogen Radicals to Per- and Polyfluoroalkyl Substances (PFASs) Defluorination: Applicability and Degradation Mechanisms.
Environ Sci Technol
January 2025
Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, PR China.
At present, the defluorination of per- and polyfluoroalkyl substances (PFASs), including perfluoroether compounds as substitutes of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonate, is limited by the effective active species produced during the oxidation-reduction process. The contribution of the hydrogen radical (•H) as a companion active substance in the photoreduction and electrocatalytic degradation of PFASs has been neglected. Herein, we demonstrate that perfluorocarboxylic acids and perfluoroether compounds such as PFOA and hexafluoropropylene oxide dimer acid (GenX) underwent near-complete photodegradation and effective defluorination by continuously generating •H through perfluoroalkyl radical activation of water under UV irradiation without any reagents and catalysts.
View Article and Find Full Text PDFCMPK2 promotes NLRP3 inflammasome activation via mtDNA-STING pathway in house dust mite-induced allergic rhinitis.
Clin Transl Med
January 2025
Allergy Center, Department of Otolaryngology, Affiliated Eye and ENT Hospital, Fudan University, Shanghai, China.
Background: House dust mite (HDM) is the leading allergen for allergic rhinitis (AR). Although allergic sensitisation by inhaled allergens renders susceptible individuals prone to developing AR, the molecular mechanisms driving this process remain incompletely elucidated.
Objective: This study aimed to elucidate the molecular mechanisms underlying HDM-induced AR.
Synergistic Effects of NO/HS Gases on Antibacterial, Anti-inflammatory, and Analgesic Properties in Oral Ulcers Using a Gas-Releasing Nanoplatform.
Acta Biomater
January 2025
School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou, 325027, P. R. China. Electronic address:
Article Synopsis
- Oral mucosal wounds are susceptible to inflammation and complications due to exposure to microorganisms, which can hinder daily activities and diminish quality of life.
- A novel therapeutic nanoplatform, DATS@Arg-EA-SA, has been developed to target these wounds by combining guanidinated dendritic peptides with diallyl trisulfide (DATS), providing both antimicrobial and anti-inflammatory effects.
- This nanoplatform effectively eliminates various bacteria, including drug-resistant strains like MRSA, and enhances healing by promoting the transition of inflammatory cells and alleviating pain, making it a promising solution for oral wound treatment.
L-Cysteine Treatment Delays Leaf Senescence in Chinese Flowering Cabbage by Regulating ROS Metabolism and Stimulating Endogenous HS Production.
Foods
December 2024
State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and Vegetables/Engineering Research Center of Southern Horticultural Products Preservation, Ministry of Education, College of Horticulture, South China Agricultural University, Guangzhou 510642, China.
Leaf senescence is a major concern for postharvest leafy vegetables, as leaves are highly prone to yellowing and nutrient loss, resulting in reduced commercial value and limited shelf-life. This study aimed to investigate the effect of L-cysteine (L-cys) on postharvest Chinese flowering cabbage stored at 20 °C. The results showed that 0.
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