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Quantifying the distribution and origins of aerosol zinc across the Northern Hemisphere using stable zinc isotopes: A review.
J Hazard Mater
March 2025
Key Laboratory of Cryospheric Science and Frozen Soil Engineering, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China.
Quantitatively assessing the origins of aerosol zinc (Zn) is crucial for understanding of the global atmospheric Zn cycle and for formulating targeted policies to mitigate anthropogenic Zn emissions. Zn isotope ratios (denoted as δ⁶⁶Zn) serve as powerful tools for constraining the origins of aerosol Zn. This review comprehensively compiles an δ⁶⁶Zn (relative to Lyon JMC Zn standard) dataset (n = 207) for multi-sized aerosols observed exclusively in the Northern Hemisphere, encompassing diverse atmospheric environments, including urban areas and remote deserts, glacier, and ocean.
View Article and Find Full Text PDFRegularized origin ensemble with a beam prior for range verification in particle therapy with Compton-camera data.
Phys Med Biol
March 2025
Institute of Medical Engineering, University of Lübeck, Ratzeburger Allee 160, Lubeck, Schleswig-Holstein, 23562, GERMANY.
In particle therapy (PT), several methods are being investigated to help reduce range margins and identify deviations from the original treatment plan, such as prompt-gamma (PG) imaging with Compton cameras (CC). To reconstruct the images, the Origin Ensemble (OE) algorithm is commonly used. In the context of PT, artifacts and strong noise often affect CC images.
View Article and Find Full Text PDFAJGM: Joint Learning of Heterogeneous Gene Networks with Adaptive Graphical Model.
Bioinformatics
March 2025
Department of Statistics, Hunan University, Changsha, 410000, China.
Motivation: Inferring gene networks provides insights into biological pathways and functional relationships among genes. When gene expression samples exhibit heterogeneity, they may originate from unknown subtypes, prompting the utilization of mixture Gaussian graphical model for simultaneous subclassification and gene network inference. However, this method overlooks the heterogeneity of network relationships across subtypes and does not sufficiently emphasize shared relationships.
View Article and Find Full Text PDFThe effect of H occupancy modes in small and large cages of H-tetrahydrofuran hydrates on the hydrates' stability and H storage capacity.
Phys Chem Chem Phys
March 2025
School of Civil and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA.
Hydrogen storage as hydrates is one of the most environmentally benign approaches to store hydrogen as it requires only water and traces of promoters. However, the scalability of storing hydrogen hydrate formation is hindered by the limited understanding of the structure, dynamics and energetics of hydrogen and promoters in the hydrate cages. In this study, molecular dynamics simulation configurations with different occupancy modes of H and tetrahydrofuran (THF) in the hydrate cages are investigated under the following scenarios: (i) two H molecules occupying the small cages, (ii) occupancy of H molecules in the THF-free large cages, and (iii) co-occupancy of H and THF in one large cage.
View Article and Find Full Text PDFThe celiac ganglia and trunk: an assessment of anatomical variants and their clinical relevance.
J Med Life
January 2025
Discipline of Anatomy, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.
The celiac ganglia are a network of nerve fibers that regulate various functions related to digestion, while the celiac trunk is a major artery that supplies oxygenated blood to the stomach, small intestine, and other organs in the upper abdominal region. Anatomical variants of these structures are common and can have significant implications for surgical and medical procedures. This prospective observational study was conducted over one year and included 300 patients (aged 45-75 years) with a history of peripheral arterial disease, evaluated at Dr.
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