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http://dx.doi.org/10.1016/j.gie.2007.09.016 | DOI Listing |
Biomater Sci
January 2025
Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, India.
Hydroxyapatite (HA), the main inorganic bone component, is the most widely researched bioceramic for bone repair. This paper presents a comprehensive review of recent advancements in HA synthesis methods and their integration into additive manufacturing (AM) processes. Synthesis methodologies discussed include wet, dry, and biomimetic routes, emphasizing their impact on tailoring the physicochemical properties of HA for biomedical applications.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
University of Science and Technology of China, Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, CHINA.
Electrolysis of carbon dioxide (CO2) in acid offers a promising route to overcome CO2 loss in alkaline and neutral electrolytes, but requires concentrated alkali cations (typical ≥3 M) to mitigate the trade-off between low pH and high hydrogen evolution reaction (HER) rate, causing salt precipitation. Here we report a strategy to resolve this problem by introducing tensile strain in a copper (Cu) catalyst, which can selectively reduce CO2 to valuable multicarbon products, particularly ethylene, in a pH 1 electrolyte with 1 M potassium ions. We find that the tension-strained Cu creates an electron-rich surface that concentrates diluted potassium ions, contributing to CO2 activation and HER suppression.
View Article and Find Full Text PDFChemMedChem
January 2025
Université de Montpellier, IBMM UMR 5247 - Pôle Chimie Balard Recherche, 1919 Route de Mende, 34293, Montpellier, FRANCE.
Tumor-associated human carbonic anhydrases (hCAs), particularly isoforms hCA IX and hCA XII, are overexpressed in hypoxic regions of solid tumors and play a crucial role in regulating pH homeostasis, promoting cancer cell survival and enhancing invasiveness. These enzymes have emerged as promising therapeutic targets in cancer treatment, including photothermal therapy (PTT). PTT is a minimally invasive technique that uses light-absorbing agents to convert near-infrared (NIR) light into heat, effectively inducing localized hyperthermia and promoting cancer cell apoptosis.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
University of Strasbourg, UMR 7213 CNRS, 74, Route du Rhin, 67401, Illkirch-Strasbourg, FRANCE.
Molecular recognition and detection of small bioactive molecules, like neurotransmitters, remain a challenge for chemists, whereas nature found an elegant solution in form of protein receptors. Here, we introduce a concept of a dynamic artificial receptor that synergically combines molecular recognition with dynamic imine bond formation inside a lipid nanoreactor, inducing a fluorescence response. The designed supramolecular system combines a lipophilic recognition ligand derived from a boronic acid, a fluorescent aldehyde based on push-pull styryl pyridine and a phenol-based catalyst.
View Article and Find Full Text PDFBMJ Open
December 2024
Institute of Inflammation and Ageing, University of Birmingham College of Medical and Dental Sciences, Birmingham, UK.
Introduction: Despite unprecedented pressures on urgent and emergency care services, there is no clear consensus on how to provide acute medical care delivery in the UK. These pressures can lead to significant delays in care for patients presenting with emergencies when admitted via traditional routes through the emergency department. Historically, a separate pathway has existed where patients are directly admitted to acute medicine services without attending the emergency department.
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