Results 101 to 110 of about 2,428 (200)

Direct determination of rare earth elements in atmospheric precipitation using a membrane desolvation ICP-MS/MS with N₂O as the reaction gas. [PDF]

RSC Adv
Zhang JY, Liu WJ, Liu D, Wu GL, Xu ZF.
europepmc   +1 more source

The Great Cosmic Silence: What Does the Fermi Paradox Tell About the Future of Humanity?

Global Policy, EarlyView.
ABSTRACT This article examines how institutional time horizons shape the long‐term survival prospects of human technological civilisation. While research on global catastrophic and existential risks has expanded, the temporal structures of political‐economic institutions remain underexamined.
Heikki Patomäki
wiley   +1 more source

Microscopic magnetic-field imaging of a single lunar dust grain. [PDF]

Fundam Res
Yang Y, Xing L, Zhou Z, Zhou Y, Zhu K, Lyu S, Wang Y, Tang X, Li J, Feng J.   +9 more
europepmc   +1 more source

Greek ΜΝΗΣΘΗ and Aramaic DKYR in the Near East: A Comparative Epigraphic Study

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT Past studies of graffiti containing the word ΜΝΗΣΘΗ have never fully established its intrinsic meaning. However, due to the existence of the Aramaic term DKYR, which carries a seemingly identical meaning to ΜΝΗΣΘΗ, in similar contexts in the Roman Near East, a comparison between both words is possible. Four distinct sites where the coexistence
Sebastien Mazurek
wiley   +1 more source

Specialised and persistent raw material procurement by humans in the Middle Pleistocene. [PDF]

Nat Commun
Will M, Sommer C, Möller GHD, Botha GA, Blessing MA, Msimanga L, Mazel A, Val A, Venditti F, Riedesel S.   +9 more
europepmc   +1 more source

Investigating relationships among strontium, barium, and seasonality in wild baboons

Archaeometry, EarlyView.
Abstract Geochemical profiles of Australopithecus africanus and baboon teeth show fluctuating trace elements, possibly reflecting seasonal diets. Here we use laser ablation–inductively coupled plasma–mass spectrometric measurements of calcium‐normalized strontium and barium ratios (Sr/Ca and Ba/Ca) and ion microprobe analyses of oxygen isotopes (δ18O ...
Maya Bharatiya, Christine Austin, Manish Arora, Janaína N. Ávila, Esme K. Beamish, Wendy Dirks, Daniel R. Green, Nicole D. Leonard, W. Scott McGraw, Larissa Swedell, Ian S. Williams, Jian‐xin Zhao, Tanya M. Smith   +12 more
wiley   +1 more source

Paleopathology of a Lower Miocene Carettochelyid Turtle from the Moghra Formation, Egypt. [PDF]

Biology (Basel)
Guerrero A, Pérez-García A, AbdelGawad MK, Valenciano A.   +3 more
europepmc   +1 more source

Trace Element Patterns in Juvenile Wild Chimpanzee Dentitions

Archaeometry, EarlyView.
ABSTRACT Trace elements are used to infer mammalian early‐life diets, environmental toxins, dispersal patterns, stress histories, and weaning ages. Here, we employ laser ablation‐inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) to reveal elemental patterns in our closest living relatives, chimpanzees.
Tanya M. Smith, Manish Arora, Maya Bharatiya, Nicole Leonard, Jian‐xin Zhao, Christine Austin   +5 more
wiley   +1 more source

Implicit 3D geological modeling method based on expert knowledge constraints: A case study from the Songshugang Mining District, Hengfeng County, Jiangxi Province, China. [PDF]

PLoS One
Jin W, Wu Z, Xu Z, Li H, Li B, Guo F, Zhang Z, Ma F, Li H, Lu P.   +9 more
europepmc   +1 more source

The Material Basis of 18th‐Century Meissen Porcelain

Archaeometry, EarlyView.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source