Results 161 to 170 of about 22,096 (292)
Safety pharmacology of acute mescaline administration in healthy participants
British Journal of Clinical Pharmacology, EarlyView.Aims Psychedelics, including mescaline, may serve as novel treatments for depression and anxiety. However, data is scarce on the safety of mescaline. Methods The present pooled analysis included two double‐blind, randomized, placebo‐controlled studies with a total of 48 participants and 96 mescaline administrations. Single oral‐dose administrations (n =
Aaron Klaiber +4 more
wiley +1 more source
New results with regard to the Flora bust controversy: radiocarbon dating suggests nineteenth century origin. [PDF]
Sci Rep, 2021 Reiche I, Beck L, Caffy I.
europepmc +1 more source
Late Holocene moisture variability in Arctic Alaska from chitin δ18O
Boreas, EarlyView.Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley +1 more source
Boreas, EarlyView.The relationship between the climate and societal transformation in Maya lowlands has long been debated, particularly the role of drought in shaping the civilization trajectory during the Classic Period. A high‐resolution, multi‐proxy, geochemical record from Lake Kaná, located in the underexplored Uaymil region of the Yucatán Peninsula in Mexico ...
Haydar B. Martinez‐Dyrzo +5 more
wiley +1 more source
Dating burial practices and architecture at Lepenski Vir
, 2008 Previous attempts to establish a chronology for Lepenski Vir using three different methods (stratigraphy, radiometric 14C dating of bulk charcoal samples, and AMS 14C dating of human bone collagen) produced inconsistent results. Discrepancies between the
Higham, Thomas +5 more
core
Boreas, EarlyView.Map of Lower sediment (LS) thickness is a surrogate for the distribution of Thorncliffe Formation (TF) and ~75% of TF thickness from the slope of Niagara Escarpment east to Brighton. Inset images show the LS sequence at the Don Valleys brickyards (DVBY) and undeformed TF sand and gravel (~15 m) below Newmarket Till (NT) at sites L and Co.
David R. Sharpe +3 more
wiley +1 more source
Radiocarbon Dating of Several Ancient Jewish Oil Lamps from Rome
, 2007 In this paper, we discuss how the radiocarbon dating of soot on oil lamps can help determine the chronology of the Jewish catacombs of Rome.
Rutgers, Leonard V +2 more
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Luminescence dating of coastal deposits from the Chanthaburi Plain, Thailand
Boreas, EarlyView.The ongoing global sea‐level rise urges us to better understand the dynamics of coastal processes for predicting future changes. Sedimentary deposits reflect past coastal environments but require precise chronological data to place evidence into a temporal context.
Margarita Nuss +6 more
wiley +1 more source
Development of Sample Pretreatment of Silk for Radiocarbon Dating
, 2008 We have developed sample pretreatments for silk for radiocarbon dating. Characteristics of silk under different types of pretreatment were investigated, as well as the behavior of dye and possible contaminants.
Sparks, Rodger +3 more
core
Boreas, EarlyView.Palynological records are central to the biostratigraphic subdivision of the Late Pleistocene in central Europe. Yet many interglacial and interstadial phases—such as the Eemian, Brörup and Odderade—remain only poorly constrained in time due to limited numerical dating.
Michael Hein +19 more
wiley +1 more source