منابع مشابه
Beryllium abundances in metal - poor stars ⋆
We have determined beryllium abundances for 25 metal-poor stars based on the high resolution and high signal-to-noise ratio spectra from the VLT/UVES database. Our results confirm that Be abundances increase with Fe, supporting the global enrichment of Be in the Galaxy. Oxygen abundances based on [O i] forbidden line implies a linear relation with a slope close to one for the Be vs. O trend, wh...
متن کاملFirst UVES observations of beryllium in very metal-poor stars
We report on a attempt to detect beryllium in two dwarf stars of the Galactic halo with metallicities below one thousandth solar. The data were obtained during the Commissioning of the Ultraviolet and Visible Echelle Spectrograph (UVES) mounted on the ESO VLT Kueyen telescope, and show the potential of UVES for studies in the UV-optical domain. We claim a beryllium detection in LP 815–43 ([Fe/H...
متن کاملBeryllium Metal II. A Review of the Available Toxicity Data
Beryllium metal was classified in Europe collectively with beryllium compounds, e.g. soluble salts. Toxicological equivalence was assumed despite greatly differing physicochemical properties. Following introduction of the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) regulation, beryllium metal was classified as individual substance and more investigational effort...
متن کاملComment on Strupp papers on beryllium metal toxicity.
I read with great interest the research articles by Strupp (2011a,b) ‘Beryllium Metal I’ and ‘Beryllium Metal II’ which were funded by the REACH Beryllium Consortium (2008), an industry group led by Brush Wellman Inc., the largest producer of beryllium in North America. I would like to comment on the author’s conclusion that beryllium metal is not a skin sensitizer and to caution readers on the...
متن کاملBeryllium and Beryllium Compounds
Please note that the layout and pagination of this pdf file are not identical to those of the printed CICAD
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2004
ISSN: 0375-9687
DOI: 10.1143/ptps.154.392