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Polymer Ligands with Multi-Nitrogen Heterocyclic Carbenes for Enhanced Stability and Reactivity in Nanoparticle Surface Functionalization.
Angew Chem Int Ed Engl
January 2025
Fudan University, Department of Macromolecular Science, 2205 Songhu Rd, 200438, Shanghai, CHINA.
Nitrogen heterocyclic carbenes (NHCs) are emerging as effective substitutes for conventional thiol ligands in surface functionalization of nanoparticles (NPs), offering exceptional stability to NPs under harsh conditions. However, the highly reactive feature of NHCs limits their use in introducing chemically active groups onto the NP surface. Herein, we develop a general yet robust strategy for the efficient surface functionalization of NPs with copolymer ligands bearing various functional groups.
View Article and Find Full Text PDFImpacts of irrigation expansion on moist-heat stress based on IRRMIP results.
Nat Commun
January 2025
Department of Water and Climate, Vrije Universiteit Brussel, Brussels, Belgium.
Irrigation rapidly expanded during the 20 century, affecting climate via water, energy, and biogeochemical changes. Previous assessments of these effects predominantly relied on a single Earth System Model, and therefore suffered from structural model uncertainties. Here we quantify the impacts of historical irrigation expansion on climate by analysing simulation results from six Earth system models participating in the Irrigation Model Intercomparison Project (IRRMIP).
View Article and Find Full Text PDFTemperature seasonality regulates organic carbon burial in lake.
Nat Commun
January 2025
Laboratoire des Sciences du Climat et de l' Environnement, LSCE/IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, France.
Organic carbon burial (OCB) in lakes, a critical component of the global carbon cycle, surpasses that in oceans, yet its response to global warming and associated feedbacks remains poorly understood. Using a well-dated biomarker sequence from the southern Tibetan Plateau and a comprehensive analysis of Holocene total organic carbon variations in lakes across the region, here we demonstrate that lake OCB significantly declined throughout the Holocene, closely linked to changes in temperature seasonality. Process-based land surface model simulations clarified the key impact of temperature seasonality on OCB in lakes: increased seasonality in the early Holocene saw warmer summers enhancing ecosystem productivity and organic matter deposition, while cooler winters improved organic matter preservation.
View Article and Find Full Text PDFThe effect of muscle warm-up on voluntary and evoked force-time parameters: A systematic review and meta-analysis with meta-regression.
J Sport Health Sci
January 2025
School of Medical and Health Sciences, Edith Cowan University, Joondalup WA 6027, Australia.
Background: While muscle contractility increases with muscle temperature, there is no consensus on the best warm-up protocol to use before resistance training or sports exercise due to the range of possible warm-up and testing combinations available. Therefore, the objective of the current study was to determine the effects of different warm-up types (active, exercise-based vs. passive) on muscle function tested using different activation methods (voluntary vs.
View Article and Find Full Text PDFModelling the human Coenzyme Q deficiency in Drosophila melanogaster.
Free Radic Biol Med
January 2025
Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC-JA, Sevilla, Spain; CIBERER, U729, Instituto de Salud Carlos III, Madrid, Spain. Electronic address:
The interference of the expression of each of the genes involved in the synthesis of coenzyme Q (CoQ) in Drosophila melanogaster can help to understand the pathophysiology of CoQ-dependent mitochondrial diseases in humans. We have knocked-down all genes involved in the CoQ biosynthesis pathway at different temperatures to induce depletion of CoQ at different levels throughout the body and in a tissue-specific manner. The efficiency of the knockdowns was quantified by Q-RTPCR and determination of CoQ levels by HPLC-UV+ECD.
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