Results 21 to 30 of about 471,273 (365)

New Isotopic Data on the Diet of the Saka Period Population from Central Kazakhstan

open access: yesПоволжская археология, 2020
This paper presents the results of stable isotope analysis of the Saka period population of Central Kazakhstan. The analysed materials originate from 37 sites of the Tasmola Culture which is presently dated to the 8th – 5th c. BC.
Beisenov Arman Z.   +4 more
doaj   +1 more source

New Radiocarbon Dates from the Saka Time Settlements of Central Kazakhstan

open access: yesПоволжская археология, 2022
The features of the settlements of the Saka time in Central Kazakhstan are studied on the basis of materials from more than 70 objects that have been discovered to date.
Beisenov Arman Z., Liu Yan, Cao Huihui
doaj   +1 more source

A chronology of global air quality

open access: yesPhilosophical Transactions of the Royal Society A, 2020
Air pollution has been recognized as a threat to human health since the time of Hippocrates, ca 400 BC. Successive written accounts of air pollution occur in different countries through the following two millennia until measurements, from the eighteenth ...
D. Fowler   +15 more
semanticscholar   +1 more source

Ebla between the Early and Middle Bronze Ages: A Précis (and Some New Data)

open access: yesAsia Anteriore Antica, 2022
The discoveries of the 2004-2008 excavations at Tell Mardikh, ancient Ebla, in north-western Syria, and the following processing of the archaeological record have allowed for a re-examination the site’s trajectory between Early Bronze IVB and Middle ...
Marta D'Andrea
doaj   +1 more source

Quantum Complex Scalar Field in the Two-Dimensional Spacetime with Closed Timelike Curves and a Time-Machine Problem [PDF]

open access: yes, 1994
It is considered the quantum complex scalar field which obeys the authomorphic condition in the two-dimensional spacetime with closed timelike curves and the chronology horizon. The renormalized stress-energy tensor is obtained.
Abramowitz M   +16 more
core   +2 more sources

Freshwater reservoir effects in the Eurasian Steppe zone and their influence on the radiocarbon ages of bone sample

open access: yesВестник археологии, антропологии и этнографии, 2016
Reservoir effects often hinder the accuracy of the radiocarbon dates from human and animal bone samples. The freshwater reservoir effect (FRE) refers to the difference between the radiocarbon age of the purely terrestrial sample (the 14C content of which
Svyatko S.V.
doaj   +1 more source

ROMAN OIL LAMP OF TERRACOTTA ON SYRIAN COAST: STATISTICAL ANALYSIS

open access: yesJournal of Ancient History and Archaeology, 2023
In 64 B.C., the Romans turned Syria into a Roman province and this occupation continued, with many vicissitudes, until 638 A.D. when it fell into Arab hands.
Mustafa BASHAR   +2 more
doaj   +1 more source

Deuterium–hydrogen ratios, electrical conductivity and nitrate for high-resolution dating of polar ice cores

open access: yesTellus: Series B, Chemical and Physical Meteorology, 2020
In order to support the very high time resolution required to observe short-term variations in nitrates and all other ions represented by electrical conductivity in polar ice, a Fourier transform infrared spectrometer was developed for measurement of ...
Gisela Dreschhoff   +2 more
doaj   +1 more source

Quantum time machine [PDF]

open access: yes, 1997
The continuation of Misner space into the Euclidean region is seen to imply the topological restriction that the period of the closed spatial direction becomes time-dependent.
B. Jensen   +27 more
core   +3 more sources

Home - About - Disclaimer - Privacy