Results 11 to 20 of about 449,256 (294)
Frontiers in Neurology, 2021 Over the last decade, several methods for analysis of epileptiform signals in electroencephalography (EEG) have been proposed. These methods mainly use EEG signal features in either the time or the frequency domain to separate regular, interictal, and ...
Leonardo R. da Costa +6 more
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Frontiers in Earth Science, 2021 Understanding the evolution of lakes in arid areas is very important for water resource management. Previous studies have mainly focused on lakes with runoff recharge, while the evolution of groundwater recharge lakes in hyper-arid areas is still less ...
Gaolei Jiang +12 more
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New Isotopic Data on the Diet of the Saka Period Population from Central Kazakhstan
Поволжская 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
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Revised chronology of central Tibet uplift (Lunpola Basin)
Science Advances, 2020 Revised age control and paleoelevations reveal Eocene low central Tibet until ~26 Ma ago when an extensive plateau began to form. Knowledge of the topographic evolution of the Tibetan Plateau is essential for understanding its construction and its ...
X. Fang +9 more
semanticscholar +1 more source
Ecological Indicators, 2023 The ecosystem health risk assessment of lake basins can provide a crucial foundation and support for the sustainable development of ecosystems in the arid regions of northern China.
Lefan Zhao +5 more
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A chronology of global air quality
Philosophical 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
New Radiocarbon Dates from the Saka Time Settlements of Central Kazakhstan
Поволжская 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
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Impact bombardment chronology of the terrestrial planets from 4.5 Ga to 3.5 Ga [PDF]
Icarus (New York, N.Y. 1962), 2019 Subsequent to the Moon's formation, late accretion to the terrestrial planets modified their silicate crusts and mantles. We combine dynamical N-body and Monte Carlo simulations to determine impact probabilities, impact velocities, and expected mass ...
R.Brasser, S. Werner, S. Mojzsis
semanticscholar +1 more source
Ebla between the Early and Middle Bronze Ages: A Précis (and Some New Data)
Asia 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
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Quantum Complex Scalar Field in the Two-Dimensional Spacetime with Closed Timelike Curves and a Time-Machine Problem [PDF]
, 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