In this work, a quick and simple low-level radionuclide metrology technique for the traceable measurement of Rn-222 activity concentration in drinking water using a 0.56 l ionisation chamber operating in spectrometric pulse mode has been developed, tested, verified and applied to 16 water samples successfully. The impact of essential influencing factors on the result has been investigated, discussed and considered in the uncertainty budget of the measurement method. Finally, the new method has been assessed regarding the applicability on the EU Council Directive 2013/51.
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http://dx.doi.org/10.1016/j.apradiso.2019.108907 | DOI Listing |
Heliyon
January 2025
Laboratory of Social and Solidarity Economy Governance and Development (LARESSGD), Department of Economics, Faculty of Law Economics and Social Sciences, Cadi Ayyad University, Marrakech, Morocco.
Early school dropout rates in Morocco exhibit widespread spatial imbalances leading to adverse consequences. Indeed, there is thus a pressing need to investigate the factors contributing to the phenomenon. To this end, this study conducts a multivariate spatial analysis of 75 provinces in Morocco.
View Article and Find Full Text PDFAdv Sci (Weinh)
January 2025
Department of Chemistry, University of North Texas1508 W Mulberry St, Denton, TX, 76201, USA.
Efficient removal of TcO from radioactive effluents while recovering drinking water remains a challenge. Herein, an excellent ReO (a nonradioactive surrogate of TcO ) scavenger is presented through covalently bonding imidazolium poly(ionic liquids) polymers with an ionic porous aromatic framework (iPAF), namely iPAF-P67, following an adsorption-site density-addition strategy. It shows rapid sorption kinetics, high uptake capacity, and exceptional selectivity toward ReO .
View Article and Find Full Text PDFmBio
January 2025
Department of Plant and Microbial Biology, University of Minnesota, St. Paul, Minnesota, USA.
Unlabelled: Snow algae darken the surface of snow, reducing albedo and accelerating melt. However, the impact of subsurface snow algae (e.g.
View Article and Find Full Text PDFThe EFSA Panel on Food Contact Materials (FCM) assessed the safety of the recycling process NGR LSP (EU register number RECYC328). The input is hot washed and dried poly(ethylene terephthalate) (PET) flakes mainly originating from collected post-consumer PET containers, with no more than 5% PET from non-food consumer applications. The flakes are dried (step 2), melted in an extruder (step 3) and decontaminated during a melt-state polycondensation step under high temperature and vacuum (step 4).
View Article and Find Full Text PDFAdv Sci (Weinh)
January 2025
Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiangan South Road, Xiamen, Fujian, 361102, P. R. China.
Hyperglycemia accelerates Alzheimer's disease (AD) progression, yet the role of monosaccharides remains unclear. Here, it is demonstrated that mannose, a hexose, closely correlates with the pathological characteristics of AD, as confirmed by measuring mannose levels in the brains and serum of AD mice, as well as in the serum of AD patients. AD mice are given mannose by intra-cerebroventricular injection (ICV) or in drinking water to investigate the effects of mannose on cognition and AD pathological progression.
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