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Association Kinetics for Perfluorinated -Alkyl Radicals.
J Phys Chem A
December 2024
Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States.
Radical-radical reaction channels are important in the pyrolysis and oxidation chemistry of perfluoroalkyl substances (PFAS). In particular, unimolecular dissociation reactions within unbranched -perfluoroalkyl chains, and their corresponding reverse barrierless association reactions, are expected to be significant contributors to the gas-phase thermal decomposition of families of species such as perfluorinated carboxylic acids and perfluorinated sulfonic acids. Unfortunately, experimental data for these reactions are scarce and uncertain.
View Article and Find Full Text PDFCellulose nanofibril enhanced ionic conductive hydrogels with high stretchability, high toughness and self-adhesive ability for flexible strain sensors.
Int J Biol Macromol
December 2024
State Key Laboratory of Metastable Materials Science and Technology, Hebei Key Laboratory of Applied Chemistry, Hebei Key Laboratory of Nanobiotechnology, Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse, Yanshan University, Qinhuangdao 066004, China. Electronic address:
Preparation of ion-conductive hydrogels with excellent mechanics, good conductivity and adhesiveness is promising for flexible sensors, but remains a challenge. Here, we prepare a self-adhesive and ion-conductive hydrogel by introducing cellulose nanofibers (CNF) and ZnSO into a covalently-crosslinked poly (acrylamide-co-2-acrylamide-2-methyl propane sulfonic acid) (P(AM-co-AMPS)) network. Owing to the hydrogen bonding and metal coordination interactions among P(AM-co-AMPS) chains, CNF, and Zn, the resulting P(AM-co-AMPS)/CNF/ZnSO hydrogel exhibits high stretchability (1092 %), high toughness (244 kJ m), and skin-like elasticity (3.
View Article and Find Full Text PDFMultifunctional Supramolecular Gels with Strong Mechanical Properties Formed by Self-Assembly of Polyoxometalate-Based Coordination Polymers.
JACS Au
December 2024
Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM, F-75005 Paris, France.
Metallogels built in a bottom-up approach by metal coordination and supramolecular interactions have important potential for the elaboration of smart materials. In this context, we present here the formation of supramolecular coordination polymers driven by the complexation of cobalt(II) or zinc(II) ions with polyoxometalate-based hybrids displaying two terpyridine ligands in a linear arrangement. Thanks to the electrostatic interactions between the polyoxometalate cores and metal nodes, the polymer chains self-assemble into fibers that physically cross-link to form gels above a critical concentration.
View Article and Find Full Text PDFParaoxonase 1 ameliorates neurological symptoms and motor coordination impairment caused by cerebral ischemia-reperfusion injury.
Biomed Pharmacother
December 2024
Research Division, Mitsubishi Tanabe Pharma Corporation, 1000, Kamoshida-cho, Aoba-ku, Yokohama-shi, Kanagawa 227-0033, Japan. Electronic address:
The anti-atherosclerotic effects of high-density lipoprotein (HDL) prevent the onset of cerebral infarction and provide cerebroprotective effects against ischemia-reperfusion injury. These inhibitory effects have been attributed to its antioxidant, anti-inflammatory, and antithrombotic properties. However, pharmacotherapeutic strategies to clinically realize these effects have not been demonstrated.
View Article and Find Full Text PDFPolicies and strategies to control antimicrobial resistance in livestock production: A comparative analysis of national action plans in European Union Member States.
Health Policy
December 2024
Department of Agricultural and Food Sciences, University of Bologna, Via G. Fanin 50, Bologna 40127, Italy.
Policy strategies targeting imprudent antimicrobial use (AMU) in livestock farming have been established at the global and country levels, recognising the risks associated with antimicrobial resistance (AMR). This study evaluates the strategies addressing AMU and AMR in animal farms and the food supply chain in EU Member States using a multimethod approach. Our aim is to contribute to the debates surrounding the goals set by the EU Commission and the 'Strategic framework for collaboration on antimicrobial resistance: Together for One Health'.
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