Results 141 to 150 of about 299,841 (224)

PERIODIZING GEOLOGICALLY OUTWITH (AND WITHOUT?) THE ANTHROPOCENE: PASTS, AGENCIES, AND THE TERRESTRIAL

History and Theory, Volume 65, Issue 3, Page 344-367, September 2026.
ABSTRACT As a periodization that is generally understood to refer to an era of Terrestrial relationships that developed with modernization and nuclearization, the Anthropocene cannot be applied simply to premodern histories and texts. However, it has introduced historians to geological periodization as a mode of describing periods of changed ...
Gwenffrewi J. Morgan
wiley   +1 more source

The ANT‐Mobilities Framework: Transectionality and a Post‐Materialist Historical Sociology

Sociology Lens, Volume 39, Issue 3, Page 498-506, September 2026.
ABSTRACT The ANT‐Mobilities framework synthesizes Actor‐Network Theory, the mobilities paradigm, and historical sociology to analyze complex social transformations. This paper develops the framework through empirical engagement with post‐disaster rehabilitation networks following the 2005 Pakistan earthquake, demonstrating how crisis contexts generate ...
Farrukh A. Chishtie
wiley   +1 more source

Cosmological Perturbations of Ultrarelativistic Plasmas

, 1996
Scalar cosmological perturbations of a weakly self-interacting plasma mixed with a perfect radiation fluid are investigated. Effects of this plasma are considered through order $λ^{3/2}$ of perturbative thermal-field-theory in the radiation dominated universe. The breakdown of thermal perturbation theory at vastly subhorizon scales is circumvented by a
openaire   +4 more sources

Characterization of coesite‐bearing impact melt glass from the Hapcheon crater, Korea: Trimodal phase architecture, shock metamorphism, and implications for 40Ar/39Ar geochronology

Meteoritics &Planetary Science, Volume 61, Issue 9, Page 2233-2257, September 2026.
Abstract We present the first micrometer‐scale, phase‐resolved compositional characterization of impact melt glass from the Hapcheon crater (~1.4 km apparent diameter), the first confirmed impact structure on the Korean Peninsula, integrating EPMA‐WDS (5 μm spot), confocal Raman spectroscopy (<1 μm spot), XRD, and 40Ar/39Ar step‐heating geochronology ...
Jin‐Young Lee, Jeongmin Kim, Sei‐Sun Hong   +2 more
wiley   +1 more source

Zero average values of cosmological perturbations as an indispensable condition for the theory and simulations. [PDF]

Eur Phys J C Part Fields, 2015
Eingorn M, Brilenkov M, Vlahovic B.
europepmc   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, Volume 111, Issue 9, Page 4015-4040, 1 September 2026.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Inflation and Cosmological Perturbations

, 2010
56 pages, 5 figures; Lectures given at the Second TRR33 Winter School on cosmology, Passo del Tonale (Italy), December 2008International audienceThe purpose of these lectures is to give a pedagogical introduction to inflation and the production of ...
D. Langlois, Langlois, David
core   +1 more source

Stability of the de-Sitter spacetime. The anisotropic case

Physics Letters B
We elaborate on the cosmological implications of the recently established non-perturbative O(D,D)-symmetric approach. Following the α′-complete Friedmann equations, we provide a qualitative description of the dynamics of anisotropy perturbations. We find
Przemysław Bieniek, Jan Chojnacki, Jan H. Kwapisz, Krzysztof A. Meissner   +3 more
doaj   +1 more source

Cosmological perturbations in massive bigravity

, 2014
We present a comprehensive analysis of classical scalar, vector and tensor cosmological perturbations in ghost-free massive bigravity. In particular, we find the full evolution equations and analytical solutions in a wide range of regimes.
Macarena Lagos, Pedro G. Ferreira, Lagos, M, Ferreira, PG   +3 more
core   +1 more source

Primordial gravitational waves assisted by cosmological scalar perturbations

European Physical Journal C: Particles and Fields
Primordial gravitational waves are a crucial prediction of inflation theory, and their detection through their imprints on the cosmic microwave background is actively being pursued. However, these attempts have not yet been successful.
Yan-Heng Yu, Sai Wang
doaj   +1 more source