Results 71 to 80 of about 64,269 (303)
Łódź Radiocarbon Dates III [PDF]
Radiocarbon, 1984 The results presented in this list were obtained from 1986 to 1989. Equipment, measurement and treatment of samples are as reported previously (Kanwiszer & Trzeciak 1984: 111). Age calculations are based on a contemporary value equal to 95% of the activity of NBS oxalic acid standard and on the conventional half-life for 14C of 5568 ± 30 years ...
Andrzej Kanwiszer, Paweł Trzeciak
openaire +3 more sources
Limnology and Oceanography: Methods, EarlyView.Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith +4 more
wiley +1 more source
Fine and Coarse Carbonaceous Aerosol in Houston, TX, during DISCOVER-AQ
Atmosphere, 2020 To investigate major sources and trends of particulate pollution in Houston, total suspended particulate (TSP) and fine particulate matter (PM2.5) samples were collected and analyzed.
Subin Yoon +2 more
doaj +1 more source
Scottish Archaeological Internet ReportsArchaeological excavations conducted in 2017 at Grantown Road, Forres form the final phase of works on a residential development that began in 2002. The earlier works examined an area of more than 70ha and confirmed the presence of an extensive Iron Age settlement represented by ring-ditch, ring-groove, and post-ring structures, in association with ...
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International Journal of Osteoarchaeology, EarlyView.ABSTRACT Understanding hunting strategies in Upper Paleolithic contexts remains challenging due to the complex relationships between prey behavior, environmental conditions, and human decision‐making. Addressing these dynamics requires integrating archeozoological, geospatial, and geochemical proxies capable of capturing demographic patterns, landscape
Alejandro Sierra +6 more
wiley +1 more source
The origins of agriculture in Iberia: a computational model
Documenta Praehistorica, 2015 Here we discuss the importance of using the rich and growing database of high-precision, audited radiocarbon dates for high-resolution bottom-up modelling to focus on problems concerning the spread of the Neolithic in the Iberia.
Salvador Pardo Gordó +4 more
doaj +1 more source
International Journal of Osteoarchaeology, EarlyView.ABSTRACT The frequency of tobacco use during the postmedieval period is widely underexplored; this has repercussions for our understanding of the intoxicant's health impacts during this time. Our study assesses the frequency rates of tobacco consumption in different social groups in England and the Netherlands, two countries in which tobacco use became
Anna M. Davies‐Barrett +1 more
wiley +1 more source
Journal of Open Archaeology DataThis archive lists ~8000 Bronze Age British axeheads, alongside associated compositional analyses, isotopic measurements and radiocarbon dates. It integrates several major existing data collection efforts and published catalogues, whilst also providing a
Andrew Bevan +20 more
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Variations in Solar Activity Across the Spörer Minimum Based on Radiocarbon in Danish Oak
Geophysical Research Letters, 2019 Several aspects concerning the origin and nature of grand solar minima remain unclear, and more high‐resolution 10Be and 14C records are needed to improve our understanding of these phenomena.
A. Fogtmann‐Schulz +6 more
doaj +1 more source
, 2014 Dietary offsets in radiocarbon dates are becoming increasingly interesting to researchers, not only because of their impact on the reliability of chronologies but also because of the possibilities for extracting further dietary information from the 14C ...
Weber, Andrzej W +4 more
core +2 more sources