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Thorium ore dust research applicable to mineral sands industry workers.
J Radiol Prot
January 2025
School of Medical and Health Sciences, Edith Cowan University, Joondalup, Western Australia, AUSTRALIA.
Historically, radiation exposure to mineral sands workers arose primarily from intake of thorium associated with monazite dust generated in mineral separation plants. Research investigations in the 1990s provided greater insight into the characteristics of inhaled thorium ore dust and bioassay studies inferred that some workers had accumulated significant lung burdens of thorium. Recent changes to biokinetic models have increased the radiation dose assessed to arise from thorium intake, raising questions on the appropriateness of current assumptions used in exposure assessment and feasibility of further bioassay research.
View Article and Find Full Text PDFTiN Boosting the Oxygen Reduction Performance of Fe-N-C through the Relay-Catalyzing Mechanism for Metal-Air Batteries.
ACS Appl Mater Interfaces
January 2025
Department of Aviation Oil and Material, Air Force Logistics Academy, 72 Xi Ge Road, Xuzhou, Jiangsu 221000, China.
Metal-air batteries desire highly active, durable, and low-cost oxygen reduction catalysts to replace expensive platinum (Pt). The Fe-N-C catalyst is recognized as the most promising candidate for Pt; however, its durability is hindered by carbon corrosion, while activity is restricted due to limited oxygen for the reaction. Herein, TiN is creatively designed to be hybridized with Fe-N-C (TiN/Fe-N-C) to relieve carbon corrosion and absorb more oxygen when catalyzing oxygen reduction.
View Article and Find Full Text PDFRuthenium-Catalyzed Deconstruction of Polyolefins: A Strategy to Up-cycle the Waste Polyethylene to Value-Added Alkenes.
Angew Chem Int Ed Engl
January 2025
CSIR National Chemical Laboratory, Polymer Science and Engineering Division, INDIA.
Synthesis of value-added products from post-consumer waste polyolefins is fascinating as well as challenging. Here we report ruthenium-catalyzed up-cycling of the polyethylene to long-chain alkene derivatives. The developed methodology mainly involves two steps i.
View Article and Find Full Text PDFDistributed representations of temporally accumulated reward prediction errors in the mouse cortex.
Sci Adv
January 2025
Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore 308232, Singapore.
Reward prediction errors (RPEs) quantify the difference between expected and actual rewards, serving to refine future actions. Although reinforcement learning (RL) provides ample theoretical evidence suggesting that the long-term accumulation of these error signals improves learning efficiency, it remains unclear whether the brain uses similar mechanisms. To explore this, we constructed RL-based theoretical models and used multiregional two-photon calcium imaging in the mouse dorsal cortex.
View Article and Find Full Text PDFImproving Therapeutic Adherence and Reducing Therapeutic Inertia in the Management of People with Cardiometabolic Diseases: A Call-to-Action from the Middle East.
Adv Ther
January 2025
School of Population Health, University of New South Wales, Sydney, Australia.
Hypertension, dyslipidemia, and type 2 diabetes are highly prevalent and poorly controlled cardiometabolic diseases in the Middle East. Therapeutic non-adherence and therapeutic inertia are major contributors to this suboptimal disease control. Regardless of the cardiometabolic disease, evidence-based solutions may be used to improve therapeutic non-adherence and overcome inertia, and thereby help to alleviate the heavy burden of cardiovascular disease in the Middle East.
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