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Machine learning-enhanced high-resolution exposure assessment of ultrafine particles.
Nat Commun
January 2025
School of Safety Science, Tsinghua University, Beijing, China.
Ultrafine particles (UFPs) under 100 nm pose significant health risks inadequately addressed by traditional mass-based metrics. The WHO emphasizes particle number concentration (PNC) for assessing UFP exposure, but large-scale evaluations remain scarce. In this study, we developed a stacking-based machine learning framework integrating data-driven and physical-chemical models for a national-scale UFP exposure assessment at 1 km spatial and 1-hour temporal resolutions, leveraging long-term standardized PNC measurements in Switzerland.
View Article and Find Full Text PDFHighly sensitive, responsive, and selective iodine gas sensor fabricated using AgI-functionalized graphene.
Nat Commun
January 2025
School of Emergent Soft Matter, South China University of Technology, Guangzhou, China.
Radioactive molecular iodine (I) is a critical volatile pollutant generated in nuclear energy applications, necessitating sensors that rapidly and selectively detect low concentrations of I vapor to protect human health and the environment. In this study, we design and prepare a three-component sensing material comprising reduced graphene oxide (rGO) as the substrate, silver iodide (AgI) particles as active sites, and polystyrene sulfonate as an additive. The AgI particles enable reversible adsorption and conversion of I molecules into polyiodides, inducing substantial charge density variation in rGO.
View Article and Find Full Text PDFAccumulation of metals in resident blue mussels (Mytilus edulis) and exposed Asian clams (Corbicula fluminea) along the Scheldt estuary: A spatial and temporal investigation.
Mar Pollut Bull
January 2025
ECOSPHERE, Department of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium. Electronic address:
Metals are micropollutants of significant concern in the aquatic environment, requiring continuous monitoring to assess their distribution and environmental risk. This study investigated metals in water, sediment, and bivalves at different locations along the Scheldt estuary (the Netherlands-Belgium). The distribution of metals generally decreased from upstream to downstream in each matrix, with exceptions.
View Article and Find Full Text PDFVariable power functional dilution adjustment of spot urine.
Sci Rep
January 2025
Praxis Dr.Carmine, Etzelstrasse 21, Pfaeffikon SZ, 8808, Switzerland.
Spot-urinary biomarkers are crucial in medical, epidemiological, and environmental studies, but their variability due to hydration levels requires precise dilution adjustments. Traditional methods, like conventional creatinine correction (CCRC), are limited in compensating for variations in urine concentration, causing substantial inconsistencies, particularly at the extremes of the diuresis spectrum. While restricting the creatinine (CRN) range to 0.
View Article and Find Full Text PDFPhysicians Who Provide Primary Care in US Nursing Homes: Characteristics and Care Patterns.
J Am Med Dir Assoc
January 2025
Division of Health Policy and Economics, Department of Population Health Sciences, Weill Cornell Medical College, New York, NY, USA. Electronic address:
Objectives: To examine practice trends and characteristics of primary care physicians providing care in US nursing homes.
Design: Retrospective cohort study using Medicare Fee-for-Service claims.
Setting And Participants: Physicians who provided primary care to long-stay nursing home residents.
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