Results 211 to 220 of about 143,457 (288)

On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy [PDF]

open access: bronze, 2006
Chris Flynn   +4 more
openalex   +1 more source

Comparative Genomic and Mitochondrial Phylogenetic Relationships of Ovulidae (Mollusca: Gastropoda) Along the Chinese Coast

open access: yesEcology and Evolution, Volume 15, Issue 4, April 2025.
This study explores the phylogeny and mitochondrial genomics of Ovulidae, a family of marine gastropods related to Cypraeidae, by analyzing mitochondrial genomes from 14 of 15 species collected off China's coast. Key findings include the reclassification of genera Naviculavolva and Contrasimnia to the subfamily Prionovolvinae, evidence against the ...
Qiong Wu   +4 more
wiley   +1 more source

Randomized Clinical Trial: Bone Bioactive Liquid Improves Implant Stability and Osseointegration. [PDF]

open access: yesJ Funct Biomater
Al Madhoun A   +11 more
europepmc   +1 more source

Uropathogenic Escherichia coli population structure and antimicrobial susceptibility in Norfolk, UK. [PDF]

open access: yesJ Antimicrob Chemother, 2023
Carter C   +6 more
europepmc   +1 more source

The stability and masses of disc galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1982
George Efstathiou   +5 more
openaire   +2 more sources

Ionospheric D Region: Characteristics Near Dawn and Dusk

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract The characteristics of very low frequency (VLF) radio wave propagation in the Earth‐ionosphere waveguide are determined particularly through dawn and dusk using phase and amplitude measurements of man‐made signals propagating below the ionospheric D region. For the first time variations of “Wait” height and sharpness parameters, H' and β, have
Neil R. Thomson   +2 more
wiley   +1 more source

Correlation Between the Delay and Rise Time of VLF/LF Amplitudes During 20 Solar X‐Ray Flares Observed in February 2014 at Mid‐Latitude

open access: yesRadio Science, Volume 60, Issue 4, April 2025.
Abstract During daylight hours, the concentration of electrons in the ionosphere can be amplified by solar flares, which may subsequently influence the propagation of radio waves. Previous research on Very Low Frequency (VLF) signals focused on X‐class and M‐class flares.
Y. Liu, M. Füllekrug
wiley   +1 more source

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