Results 191 to 200 of about 150,051 (304)

Correlation Between Radiation Enhancements at Aviation Altitudes and Energetic Precipitating Electrons

open access: yesSpace Weather, Volume 23, Issue 10, October 2025.
Abstract The campaign of Automated Radiation Measurements for Aerospace Safety (ARMAS) has revealed that relativistic electron precipitation (REP) from the radiation belts can significantly enhance the radiation environment at aviation altitudes, in addition to the well‐known sources of galactic cosmic rays and solar energetic particles. Recent studies
Wei Xu   +11 more
wiley   +1 more source

Taxon‐specific BLAST percent identity thresholds for identification of unknown sequences using metabarcoding

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 10, Page 2380-2394, October 2025.
Abstract The identification of organisms in environmental samples using metabarcoding relies on factors such as taxonomic assignment methods, genetic markers, reference databases and confidence thresholds for taxonomic assignment. Because lineages evolve at different rates, a global threshold (e.g.
Paula Pappalardo   +5 more
wiley   +1 more source

Synchrotron intensity gradient revealing magnetic fields in galaxy clusters. [PDF]

open access: yesNat Commun
Hu Y   +5 more
europepmc   +1 more source

A Chromosome Inversion Creates a Supergene for Sex and Colour in Lake Malawi Cichlids

open access: yesMolecular Ecology, Volume 34, Issue 20, October 2025.
ABSTRACT Cichlid fishes have the highest rates of evolutionary turnover of sex chromosomes among vertebrates. Many large structural polymorphisms in the radiation of cichlids in Lake Malawi are associated with sex chromosomes and may also carry adaptive variation.
Kristen A. Behrens   +10 more
wiley   +1 more source

UV–Vis Spectra of Carbonic Acid: Rationalizing Experimental Redshifts between Monomer and Bulk based on (H2CO3)n Calculations

open access: yesChemPhysChem, Volume 26, Issue 18, September 19, 2025.
In bulk carbonic acid (e.g., in interstellar icy dust grains) cluster formation produces two distinct UV‐Vis spectral features redshifted by ≈2 eV (25 nm) and by ≈5 eV (80 nm) compared to gas phase single molecule carbonic acid 's adiabatic ionization energy. Theory and experiment were used to investigate the origin of these shifts.
Dennis F. Dinu   +7 more
wiley   +1 more source

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