Results 41 to 50 of about 10,153 (261)
Geophysical Research Letters, 2023 Dissolved organic carbon (DOC) in throughfall plays a vital role in providing carbon and energy to organisms in forests. We utilized carbon isotope analysis to allocate the sources of throughfall DOC, including leaching from plant tissues, PM2.5 ...
Ji‐Yeon Cha +7 more
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Copenhagen Radiocarbon Dates VI [PDF]
Radiocarbon, 1960 The following list comprises a selected number of measurements made up to November 1963. Age calculations are based on a contemporary value equal to 95% of the activity of the NBS oxalic-acid standard, and on a half life for C14of 5570 ± 30 yr.Results are expressed in years before 1950 and in the b.c.-a.d. scales.
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The Anatomical Record, EarlyView.Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
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Radiocarbon dating of textile in the Zagreb Radiocarbon Laboratory [PDF]
, 2020 Textile was rarely dated before the introduction of accelerator mass spectrometry (AMS) introduction since the radiocarbon method is destructive and AMS requires a much smaller amount of material than conventional radiometric methods. For the same reason, however, AMS is more susceptible to sample inhomogeneity and foreign contamination.
Sironić, Andreja +2 more
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Radiocarbon Analysis of Methane at the NERC Radiocarbon Facility (East Kilbride) [PDF]
Radiocarbon, 2019 ABSTRACTMethane is the second most important anthropogenically produced greenhouse gas, and radiocarbon (14C) analysis is extremely valuable in identifying its age and source in the environment. At the NERC Radiocarbon Facility (East Kilbride, UK) we have developed expertise in analysis of methane 14C concentration and methodological approaches to ...
Garnett, M.H. +3 more
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Spring buds of European woody plants have old 14C age
HeliyonTrees and shrubs maintain carbon reserves to support their functions during periods when metabolic demand exceeds carbon supply, such as during the dormant season.
Tamás Varga +5 more
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El Abrigo de Guachos (Sepúlveda, Segovia): un nuevo yacimiento del Neolítico antiguo en el interior peninsular [PDF]
Munibe Antropologia-ArkeologiaEn este trabajo se presenta el descubrimiento de un nuevo yacimiento del Neolítico antiguo en el interior peninsular (cuenca del Duero), a partir de los resultados preliminares de la campaña de sondeo realizada en septiembre de 2023. El Abrigo de Guachos
David Álvarez-Alonso +7 more
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Formal Tests for Resistance-Resilience in Archaeological Time Series
Frontiers in Ecology and Evolution, 2021 The study of resilience is a common pathway for scientific data to inform policy and practice towards impending climate change. Consequently, understanding the mechanisms and features that contribute towards building resilience is a key goal of much ...
Philip Riris, Jonas Gregorio de Souza
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The Anatomical Record, EarlyView.Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro +3 more
wiley +1 more source
The fossil record stays silent: Confusions and conundrums for hominin pelvis evolution
The Anatomical Record, EarlyView.Abstract The evolution of the hominin pelvis is commonly modeled as a series of stages driven largely by the requirements of bipedal locomotion, reproduction, thermoregulation, and pelvic floor muscular support. These patterns are complicated by variation in canal dimensions in relationship with different changes in overall pelvic breadths. To quantify
Helen K. Kurki, Cara M. Wall‐Scheffler
wiley +1 more source