Results 21 to 30 of about 449,256 (294)

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

Вестник 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

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

Tellus: 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, Högne Jungner, Claude M. Laird   +2 more
doaj   +1 more source

ROMAN OIL LAMP OF TERRACOTTA ON SYRIAN COAST: STATISTICAL ANALYSIS

Journal 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, Francisco Javier ESQUIVEL, José Antonio ESQUIVEL   +2 more
doaj   +1 more source

Chronology Protection in Generalized Godel Spacetime [PDF]

, 2002
The effective action of a free scalar field propagating in the generalized Godel spacetime is evaluated by the zeta-function regularization method. From the result we show that the renormalized stress energy tensor may be divergent at the chronology ...
B. Mashhoon, D. G. Boulware, D. Laurence, G. Klinkhammer, J. D. E. Grant, J. R. Gott, J. Toms, K. Gödel, L-X Li, L-X Li, L. H. Ford, M. Beboucas, M. Beboucas, M. J. Cassidy, M. J. Cassidy, M. Lyutikov, M. Novello, M. S. Morris, M. Visser, N. D. Birrell, S. Hawking, S. V. Krasnikov, S. V. Sushkov, S. V. Sushkov, S. W. Kim, T. Tanaka, V. P. Frolov, V. P. Frolov, W. A. Hiscock, W. A. Hiscock, W. H. Huang, Wung-Hong Huang   +31 more
core   +2 more sources

Models for Chronology Selection [PDF]

, 1997
In this paper, we derive an expression for the grand canonical partition function for a fluid of hot, rotating massless scalar field particles in the Einstein universe.
B. S. Kay, C. R. Cramer, D. G. Boulware, J. D. E. Grant, J. R. Gott III, J. S. Dowker, M. J. Cassidy, M. J. Cassidy, M. Visser, P. de Sousa Gerbert, S. V. Krasnikov, S. V. Sushkov, S. W. Hawking, S. W. Hawking, S. W. Hawking, S. W. Kim, T. Tanaka   +16 more
core   +3 more sources

Neolithic Burial Ground Bolshaya Umytia 100 in the North of Western Siberia: planography, chronology, stratigraphy

Археология евразийских степей, 2023
The article presents the results of a study of the Neolithic burial ground Bolshaya Umytia 100, located in the upper part of the Konda River – the left tributary of the Irtysh River.
Tatiana Yu. Klementyeva, Andrey A. Pogodin, Alexander Ya. Trufanov   +2 more
doaj   +1 more source

Application of visual stratigraphy from line-scan images to constrain chronology and melt features of a firn core from coastal Antarctica

Journal of Glaciology, 2023
Establishing an accurate chronology is crucial for interpretation of ice core-based climatic records. While high snow accumulation rates characterise coastal Antarctica, thus enabling recovery of highly resolved climatic records, summertime melting at ...
Rahul Dey, Meloth Thamban, Chavarukonam Madhavanpillai Laluraj, Kanthanathan Mahalinganathan, Bhikaji Laxman Redkar, Sudhir Kumar, Kenichi Matsuoka   +6 more
doaj   +1 more source

The Work of a Moment: When Jane Austen Stops Time

Humanities, 2022
This essay examines Jane Austen’s occasional but potent attention to singular moments that seem to stand outside of the usual flow of time. Signaled by her use of phrases such as ‘the work of a moment’ or ‘the work of an instant’, these momentous moments
Maria Frawley
doaj   +1 more source

Quantum time machine [PDF]

, 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, B. S. Kay, C. W. Misner, D. Tabor, H. D. Politzer, J. D. Bekenstein, J. D. E. Grant, J. Gott, K. S. Thorne, K. S. Thorne, Li-Xin Li, M. J. Cassidy, M. J. Morris, M. J. Spaarnay, M. S. Morris, M. Visser, N. D. Birrell, P. F. González-Díaz, P. F. González-Díaz, Pedro F. González-Díaz, R. Banach, S. Deser, S. V. Krasnikov, S. V. Sushkov, S. W. Hawking, S. W. Hawking, S. W. Hawking, T. A. Roman   +27 more
core   +3 more sources

On causality and superluminal behavior in classical field theories. Applications to k-essence theories and MOND-like theories of gravity [PDF]

, 2006
Field theories whose full action is Lorentz invariant (or diffeomorphism invariant) can exhibit superluminal behaviors through the breaking of local Lorentz invariance. Quantum induced superluminal velocities are well-known examples of this effect.
Bruneton, Jean-Philippe
core   +4 more sources