Results 241 to 250 of about 870,817 (352)

The Hitachi and Takahagi 32 m radio telescopes: Upgrade of the antennas from satellite communication to radio astronomy

open access: yes, 2016
Y. Yonekura   +34 more
semanticscholar   +1 more source

Analytical solution of the classical Rayleigh length definition, including truncation at arbitrary values

open access: yesJournal of Microscopy, EarlyView.
Abstract We present the analytical solution to the diffraction integral that describes the Rayleigh length for a focused Gaussian beam with any value of a spherical truncating aperture. This exact solution is in precise agreement with numerical calculations for the light distribution in the near focal area.
Aufried Lenferink, Cees Otto
wiley   +1 more source

Energy calibration of the 2.5 MV Pelletron at the Dalton Cumbrian Facility. [PDF]

open access: yesEur Phys J A Hadron Nucl
Linkowski K   +11 more
europepmc   +1 more source

Insights on the volcanic and impact histories of the lunar nearside from the petrology, geochemistry, and geochronology of the Calcalong Creek lunar regolith breccia meteorite

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 3, Page 392-421, March 2025.
Abstract The Calcalong Creek lunar meteorite is a regolith breccia with a lithologically diverse array of clasts set in a glassy, highly vesicular matrix. Here, we present a comprehensive new analysis of the meteorite. Comparisons to remote sensing data, lunar sample lithologies, and lunar sample ages indicate that it was likely sourced from regolith ...
B. H. Oliveira   +6 more
wiley   +1 more source

Probing Non-Equilibrium Pair-Breaking and Quasiparticle Dynamics in Nb Superconducting Resonators Under Magnetic Fields. [PDF]

open access: yesMaterials (Basel)
Park JM   +14 more
europepmc   +1 more source

The solar system Fe/Mg ratio

open access: yesMeteoritics &Planetary Science, Volume 60, Issue 3, Page 529-543, March 2025.
Abstract Solar wind Fe and Mg fluences (atoms/cm2) were measured from Genesis collectors. Fe and Mg have similar first ionization potentials and solar wind Fe/Mg should equal the solar ratio. Solar wind Fe/Mg is a more valid measure of solar composition than CI chondrites and can be measured more accurately than spectroscopic photospheric abundances ...
D. S. Burnett   +11 more
wiley   +1 more source

Prediction of unfavorable outcome of acute decompensation of diabetes mellitus. [PDF]

open access: yesDiabetol Metab Syndr
Kogan LP   +5 more
europepmc   +1 more source

Three‐dimensional morphological analysis of Chang'e‐5 lunar soil using deep learning‐automated segmentation on computed tomography scans

open access: yesComputer-Aided Civil and Infrastructure Engineering, EarlyView.
Abstract Grain morphology is a fundamental characteristic of lunar soil that influences its mechanical properties, sintering behavior, and in situ resource utilization. However, traditional two‐dimensional imaging methods are time‐consuming and lack full three‐dimensional (3D) structural information. This study presents an automated deep learning‐based
Siqi Zhou   +6 more
wiley   +1 more source

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