Results 31 to 40 of about 299,348 (228)

Planet of the apes [PDF]

open access: yesCurrent Biology, 2005
What makes us humans so special? Our language, our genes, our culture, our cognitive skills? At the Max-Planck-Institute for Evolutionary Anthropology in Leipzig, psychologists, linguists and biologists tackle this old question in a truly multidisciplinary way. Their results have implications not just for our understanding of human evolution--they also
openaire   +2 more sources

A Pointwise Conservative Method for Thermochemical Convection Under the Compressible Anelastic Liquid Approximation

open access: yesGeochemistry, Geophysics, Geosystems, 2022
In prior work we found that precise approximation of the continuity constraint is crucial for accurate propagation of tracer data when advected through a background incompressible velocity field (Sime et al., 2021, https://doi.org/10.1029/2020gc009349 ...
Nathan Sime   +2 more
doaj   +1 more source

Metallicity of solar-type stars with debris discs and planets [PDF]

open access: yes, 2012
Around 16% of the solar-like stars in our neighbourhood show IR-excesses due to debris discs and a fraction of them are known to host planets. We aim to determine in a homogeneous way the metallicity of a sample of stars with known debris discs and ...
A. Mora   +63 more
core   +3 more sources

Burying Earth's Primitive Mantle in the Slab Graveyard

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The evolution of mantle composition can be viewed as a process of destruction whereby the initial chemical state is overprinted and reworked with time.
T. D. Jones, N. Sime, P. E. van Keken
doaj   +1 more source

An introductory review of the thermal structure of subduction zones: I—motivation and selected examples

open access: yesProgress in Earth and Planetary Science, 2023
The thermal structure of subduction zones is fundamental to our understanding of physical and chemical processes that occur at active convergent plate margins.
Peter E. van Keken, Cian R. Wilson
doaj   +1 more source

Eccentricity Evolution of Extrasolar Multiple Planetary Systems due to the Depletion of Nascent Protostellar Disks

open access: yes, 2002
Most extrasolar planets are observed to have eccentricities much larger than those in the solar system. Some of these planets have sibling planets, with comparable masses, orbiting around the same host stars.
Artymowicz P.   +6 more
core   +1 more source

Testing the Metal of Late-Type Kepler Planet Hosts with Iron-Clad Methods [PDF]

open access: yes, 2013
It has been shown that F, G, and early K dwarf hosts of Neptune-sized planets are not preferentially metal-rich. However, it is less clear whether the same holds for late K and M dwarf planet hosts. We report metallicities of Kepler targets and candidate
Gaidos, Eric   +3 more
core   +3 more sources

Stephen Hawking’s Warning on Contacting Aliens: A Physics Perspective on the Intelligence Trap [PDF]

open access: yesJournal of Biomedical Physics and Engineering
The search for extraterrestrial intelligence is a fascinating and important endeavor, but it raises significant ethical and safety concerns. In the search for extraterrestrial intelligence, scientists use knowledge of physics to identify potential ...
Seyed Mohammad Javad Mortazavi   +4 more
doaj   +1 more source

An introductory review of the thermal structure of subduction zones: III—Comparison between models and observations

open access: yesProgress in Earth and Planetary Science, 2023
The thermal structure of subduction zones is fundamental to our understanding of the physical and chemical processes that occur at active convergent plate margins. These include magma generation and related arc volcanism, shallow and deep seismicity, and
Peter E. van Keken, Cian R. Wilson
doaj   +1 more source

A more advanced theoretical model of the sphere earth's EM in a foreign homogeneous EM field

open access: yesVojnotehnički Glasnik, 2023
Introduction/purpose: The paper describes a more advanced theoretical model of the Earth's EM field based on two-component hypotheses. A defined mathematical model that shows the rotation of the magnetically conducting sphere of Tthe magnetization M ...
Slobodan N. Bjelić, Nenad A. Marković
doaj   +1 more source

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