Results 21 to 30 of about 17,476 (194)
Frontiers in Marine Science, 2021 Through a combination of selective extractions and molecular characterization techniques including Isoelectric Focusing Chromatography and Electrospray Ionization Fourier-Transform Ion Cyclotron Resonance Mass spectrometry, molecular structures of diatom
Peng Lin +4 more
doaj +1 more source
210Pb numa região anômala de Pocinhos-Paraíba
Brazilian Journal of Radiation Sciences, 2018 From 1979 to 1982, the extinct company NUCLEBRAS carried out studies on the occurrence of uranium in Pocinhos, a city located in the harsh region of the State of Paraíba, where dairy farms currently exist.
Cleomacio Miguel da Silva +2 more
doaj +1 more source
Chronologies for Recent Peat Deposits Using Wiggle-matched Radiocarbon Ages: Problems with Old Carbon Contamination [PDF]
, 2005 Dating sediments which have accumulated over the last few hundred years is critical to the calibration of longer-term paleoclimate records with instrumental climate data.
Charman, D.J., Garnett, M.H.
core +1 more source
Radioactive elements in atmospheric precipitations of the Western Siberia [PDF]
E3S Web of Conferences, 2019 The radionuclide composition of the atmospheric precipitations (rain and snow) fell out on the territory of the South of the Western Siberia in 2016-2017 was studied.
Melgunov Mikhail +5 more
doaj +1 more source
Bayesian improvements to 210Pb dating
, 2021 <p>Dating with <sup>210</sup>Pb has been instrumental in providing chronologies for sedimentary deposits back to around 100-150 years ago &#8212; a key period for recent environmental events such as increased pollution caused by industry developments.
Maarten Blaauw +2 more
openaire +2 more sources
Scientia Marina, 2010 Geochemistry, total organic carbon and total nitrogen of three sediment cores collected in the Gulf of Cádiz and the Guadalquivir prodelta areas in Spain were investigated.
Roberta Guerra +4 more
doaj +1 more source
Aerosol and Air Quality Research, 2020 Naturally occurring beryllium-7 (7Be) and lead-210 (210Pb) serve as powerful tracers in atmospheric studies. In this study, 7Be and 210Pb were simultaneously measured in atmospheric aerosols and deposition samples for an entire year (from January to ...
Guoqing Liu +4 more
doaj +1 more source
Greenhouse gas balance over thaw-freeze cycles in discontinuous zone permafrost [PDF]
, 2017 Peat in the discontinuous permafrost zone contains a globally significant reservoir of carbon that has undergone multiple permafrost-thaw cycles since the end of the mid-Holocene (~3700 years before present).
Burnett, W. C. +7 more
core +3 more sources
A New Radiotracer for Particulate Carbon Dynamics: Examination of 210Bi‐210Pb in Seawater
Geochemistry, Geophysics, Geosystems, 2022 210Bi (t1/2 = 5.01 d) is theoretically a radionuclide for tracing the particle cycle over a timescale of hours to days. However, it has been rarely investigated in marine environments due to its very short half‐life and low activity.
Weifeng Yang +4 more
doaj +1 more source
Ascertaining the nature and timing of mire degradation : using palaeoecology to assist future conservation management in Northern England [PDF]
, 2017 This study was initiated under contract VT0419 from English Nature (Natural England) to CECQR. In 2015, additional funding was provided by the Yorkshire Peat Partnership, for 210Pb dating, to refine age–depth estimates.
Alistair Crowle +9 more
core +3 more sources