4 results for “Reaction Department”
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Medical study · Medical research · 2019
Iron from a geochemical viewpoint. Understanding toxicity/pathogenicity mechanisms in iron-bearing minerals with a special attention to mineral fibers
…and the experimental methods used for their study. Special attention is devoted to the Fenton-like chain reaction involving Fe2+ in the formation of highly reactive hydroxyl radicals. The final part of this review deals with…
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Medical study · Medical research · 2010
New detoxification processes for asbestos fibers in the environment
…Val Malenco fibers into non-fibrous debris. Chrysotile's crystal and spectral signatures disappeared, and magnesium oxalate was the only crystalline reaction product detected, apart from reactor steel debris. Treated Balangero fibers still showed serpentine features…
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Medical study · Medical research · 2017
Assessment of the potential respiratory hazard of volcanic ash from future Icelandic eruptions: a study of archived basaltic to rhyolitic ash samples
…worldwide. All samples generated a low level of hydroxyl radicals (HO•), a measure of surface reactivity, through the iron-catalyzed Fenton reaction compared to concurrently analyzed comparative samples. However, radical generation increased after 'refreshing' sample surfaces…
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Medical study · Medical research · 2012
Surface reactivity and cell responses to chrysotile asbestos nanofibers
…Alps. Electron microscopy, X-ray diffraction, and fluorescence spectroscopy revealed that the procedure does not affect mineralogical and chemical composition. Surface reactions related to oxidative stress, free radical generation, bioavailability of iron, and antioxidant depletion, revealed…