全部文献期刊会议图书|学者科研项目
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作者:Stewart Freeman , YunChao Lang ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2013, Vol.58 (20), pp.2473-2479Springer
摘要:Abstract(#br)This study quantifies surface denudation of carbonate rocks by the first application of in-situ cosmogenic 36 Cl in China. Concentrations of natural Cl and in-situ cosmogenic 36 Cl in bare carbonates from Guizhou karst areas were measured with isotope dilution b...
作者:Stewart Freeman , Sergey Gaschak ...
来源:[J].Science of the Total Environment(IF 3.258), 2019, Vol.692, pp.966-974Elsevier
摘要:Abstract(#br)The Chernobyl Exclusion Zone (CEZ) represents a unique natural laboratory that received significant 129 I contamination across a range of soils and land-use types in a short time period in 1986. Data are presented on 129 I and 127 I in soil samples collected fro...
作者:Stewart Freeman , Sheng Xu ...
来源:[J].Nuclear Inst. and Methods in Physics Research, B(IF 1.266), 2004, Vol.223-224, pp.195-198Elsevier
摘要:Abstract(#br)10 Be, 14 C, 36 Cl and 129 I test measurements have been made with a new Pelletron-based accelerator mass spectrometer operating at up to 5.2 MV. All ion detection was with a versatile gas ionization detector. Low-background radiocarbon measurements with 2% scat...
作者:Stewart Freeman , Paul Bishop ...
来源:[J].Nuclear Inst. and Methods in Physics Research, B(IF 1.266), 2004, Vol.223-224, pp.31-34Elsevier
摘要:Abstract(#br)A new Scottish AMS laboratory complements existing local facilities for radiocarbon and other cosmogenic isotope environmental research. A 5 MV Pelletron based accelerator mass spectrometer has been installed in a purpose-built building. The instrument is intended fo...
作者:Stewart Freeman , Paul Bishop ...
来源:[J].Nuclear Inst. and Methods in Physics Research, B(IF 1.266), 2007, Vol.259 (1), pp.66-70Elsevier
摘要:Abstract(#br)The new SUERC AMS Laboratory was described at AMS-9. Since then there have been technological developments, added and improved analysis capability, the formation of additional complementary groups, the purchase of another instrument, and many samples measured. B...
作者:Stewart Freeman , Colin Maden ...
来源:[J].Applied Geochemistry(IF 1.708), 2006, Vol.22 (3), pp.619-627Elsevier
摘要:Abstract(#br)This work constitutes the first survey of I isotope ratios for Scottish sea water including the first data for the west of Scotland. These data are of importance because of the proximity to the world’s second largest emission source of 129 I to the sea, the Sell...
作者:Stewart Freeman , David O. Nelson ...
来源:[J].Toxicology and Applied Pharmacology(IF 3.975), 1999, Vol.159 (2), pp.83-90Elsevier
摘要:Abstract(#br)The kinetics of macromolecular binding of a 5 μg/kg body wt dose of [ 14 C]benzene was studied over 48 h in B6C3F 1 , DBA/2, and C57BL/6 mice and Fischer rats to determine if adduct levels reflect known differences in metabolic capacity, genotoxicity, and carcin...
作者:... Christoph Schnabel , Stewart Freeman , Matthew J.R. Simpson
来源:[J].Quaternary Science Reviews(IF 4.076), 2008, Vol.27 (15), pp.1505-1516Elsevier
摘要:Abstract(#br)The southeast sector of the Greenland Ice Sheet is currently experiencing rapid changes in mass balance and ice sheet dynamics at low elevations. However, to what extent these changes are typical of the behaviour of this sector of the ice sheet is uncertain, as ...
作者:... Jeremy D. Everest , Stewart Freeman , Steven Binnie
来源:[J].Journal of Quaternary Science(IF 2.939), 2007, Vol.22 (8), pp.785-791Wiley
摘要:Abstract(#br)We use cosmogenic 10Be surface exposure age techniques at a locality close to Rannoch Moor, western Scottish Highlands, in order to establish the age and chronology of its most recent glaciation. Glacial erratics and an in situ bedrock quartz vein sam...
作者:... Steven Binnie , Peter W. Kubik , Stewart Freeman
来源:[J].Journal of Quaternary Science(IF 2.939), 2008, Vol.23 (2), pp.101-107Wiley
摘要:Abstract(#br)The extent of the last British–Irish Ice Sheet (BIIS) in northern Scotland is disputed. A restricted ice sheet model holds that at the global Last Glacial Maximum (LGM; ca. 23–19 ka) the BIIS terminated on land in northern Scotland, leaving Buchan, Caithness and...

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