Results 41 to 50 of about 30,104 (177)

The Physics of Core-Collapse Supernovae: Explosion Mechanism and Explosive Nucleosynthesis

open access: yesUniverse
Recent developments in multi-dimensional simulations of core-collapse supernovae have considerably improved our understanding of this complex phenomenon.
Luca Boccioli, Lorenzo Roberti
doaj   +1 more source

Air Pollution Quinones Impair Intestinal Barrier Integrity and Endoplasmic Reticulum in Differentiated Caco‐2 Cells

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Particulate matter (PM) is a major global health threat, linked to millions of deaths annually. Beyond inhalation, PM components reach the gastrointestinal tract through the mucociliary escalator or contaminated food and water. Among PM's organic fraction, redox‐active quinones such as 1,2‐naphthoquinone (NQ) and 9,10‐phenanthrenequinone (PQ ...
Franco Cervellati   +6 more
wiley   +1 more source

Red Supergiants as Supernova Progenitors

open access: yesGalaxies
The inevitable fate of massive stars in the initial mass range of ≈8–30M⊙ in the red supergiant (RSG) phase is a core-collapse supernova (SN) explosion, although some stars may collapse directly to a black hole.
Schuyler D. Van Dyk
doaj   +1 more source

SNe Ia Redshift in a Nonadiabatic Universe

open access: yesUniverse, 2018
By relaxing the constraint of adiabatic universe used in most cosmological models, we have shown that the new approach provides a better fit to the supernovae Ia redshift data with a single parameter, the Hubble constant H0, than the standard ΛCDM
Rajendra P. Gupta
doaj   +1 more source

Shared Vocabulary between Meiteilon and Tai Varieties and Pre‐Modern Language Contact on the Indo‐Myanmar Border1

open access: yesTransactions of the Philological Society, EarlyView.
Abstract This article examines lexical and phonological evidence for language contact between Old and modern Meiteilon (Manipuri) and Tai varieties, identifying loanwords relating to domestic life, trade and literary culture. Comparative data from Shan dialects and Old Meiteilon manuscripts such as the Cheitharon Kumpapa are employed in contextualising
Josiah Medin
wiley   +1 more source

Proprioception drives tension wood formation for autotropic straightening and postural control in trees

open access: yesNew Phytologist, EarlyView.
Proprioception controls trunk straightness in trees through opposite tension wood formation. A spherical growth chamber (a), combined with a two‐dimensional rotating clinostat (b2), suppresses gravi‐ and phototropic sensing. The tree is first tilted horizontally (b1), triggering upward gravitropic bending, actuated by tension wood formation on the ...
Alexandre Caulus   +7 more
wiley   +1 more source

Neutrino treatment in multidimensional astrophysical simulations : a new spectral scheme [PDF]

open access: yes, 2014
Neutrinos play a central role in modern physics and astrophysics. Their extremely weak interaction rate with baryons and other leptons makes their detection on the Earth difficult and challenging.
Perego, Albino
core   +1 more source

Critical Tests of Leading Gamma Ray Burst Theories

open access: yesUniverse, 2022
It has been observationally established that supernovae (SNe) of Type Ic produce long duration gamma-ray bursts (GRBs) and that neutron star mergers generate short hard GRBs.
Shlomo Dado   +2 more
doaj   +1 more source

Rethinking microtidal systems: Tidal signatures in the fluvial deposits of the Po River, Italy

open access: yesSedimentology, EarlyView.
ABSTRACT In microtidally influenced rivers, tides are generally assumed to leave virtually no signatures in the sedimentary record. However, this hypothesis has been surprisingly poorly tested using modern river analogues, which provide an opportunity to assess whether sedimentary signatures of microtidal regimes can develop in rivers that lack ...
Anna E. van Yperen   +6 more
wiley   +1 more source

Dust production in Supernovae [PDF]

open access: yes, 2013
Supernovae have long been proposed to be efficient dust producers in galaxies. Observations in the mid-infrared indicate that dust forms a few hundred days after the stellar explosion.
Isabelle Cherchneff   +1 more
core   +1 more source

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