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Objectives Due to their small size, ultrafine particles (UFP) are believed to exert higher toxicity than larger particles. As numerous studies on health effects of UFP have been published since the last systematic review in 2013, we aim to systematically review the new literature. Methods We searched MEDLINE and the specialized LUDOK …
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EXPERIMENTAL. The chemical composition of the austenitic man-ganese steel used in this investigation is Fe–0.9C– 14.5Mn–0.4Si–0.2Cr–0.02P–0.01S. This alloy was prepared using charge materials including rail steel and ferromanganese in an induction furnace with a. DEVELOPMENT OF ULTRAfiNE GRAIN STRUCTURE.
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There are two distinct stages which occur subsequently in the NPF phenomena. Gaseous precursors (i.e. SO x, NO x) would react with OH − to form sulfuric acid vapors which then self-combined to form critical nucleus with a base size of ∼1 nm by the help of water (Elm et al., 2020).This stage is called as nucleation step.
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