Results 1 to 10 of about 563 (166)
Properties of the Photometric Components of Lenticular Galaxies [PDF]
Advances in Astronomy, 2012 After almost one century since their definition, the origin of lenticular galaxies is still a matter of debate. Several formation processes have been proposed in order to explain the wide variety of their observational properties.
J. Alfonso L. Aguerri
doaj +5 more sources
The Invisibility of Scotomas I: The Carving Hypothesis. [PDF]
Optom Vis Sci, 2023 SIGNIFICANCE Veridical depictions of scene appearance with scotomas allow better understanding of the impact of field loss and may improve the development and implementation of rehabilitation. Explanation and depiction of the invisibility of scotoma may lead to patients' understanding and thus better compliance with related treatments.
Peli E, Goldstein R, Jung JH.
europepmc +2 more sources
Comparison between a handheld ultrasound device and a traditional ultrasound for performing transcranial sonography in patients with Parkinson's disease. [PDF]
Brain Behav, 2023 Graph 1. The receiver operating characteristic (ROC) curve. The area under the curve is 0.91 with a confidence interval (CI) of 95%: 0.84–0.97. The best substantia nigra cutoff value was 0.20 cm2. Sensitivity = 0.98 and specificity = 0.87. Abstract Objective The aim of this study is to compare a portable ultrasound (US) device and a traditional US for ...
Paes MAS +5 more
europepmc +2 more sources
Laboratory exploration of mineral precipitates from Europa's subsurface ocean. [PDF]
J Appl Crystallogr, 2021 Precipitation experiments from a model Europan ocean solution subjected to fast and slow freezing suggest that the highly hydrated Na–Mg sulfate phase Na2Mg(SO4)2·16H2O is one of the lowest‐temperature mineral phases likely to be stable on Europa's surface and may therefore be astrobiologically significant.The precipitation of hydrated phases from a ...
Thompson SP +5 more
europepmc +2 more sources
The Origin of Star-forming Rings in S0 Galaxies
The Astrophysical Journal, 2023 Spatially resolved integral field spectroscopic maps in a sample of 532 S0 galaxies from the MaNGA survey have unveiled the existence of inner rings (〈 R 〉 ∼ 1 R _e ) betraying ongoing star formation in a number of these objects.
J. L. Tous +3 more
doaj +1 more source
Advanced Intelligent Systems, Volume 5, Issue 6, June 2023., 2023 This review discusses the design and application of current smartphone‐based diagnostic devices and highlights challenges associated with existent methods and perspectives on how to deal with those challenges from engineering aspects on the constant color signal acquisition, including smartphone adapter design, color space transformation, machine ...
Kexin Fan +4 more
wiley +1 more source
Dynamical models of two lenticular galaxies: NGC 1023 and NGC 4526 [PDF]
Serbian Astronomical Journal, 2017 We study kinematics and dynamics of two lenticular galaxies that possess globular clusters (GCs) which extend beyond approximately seven effective radii. We analyze two nearby lenticular galaxies, NGC 1023 and NGC 4526, based on their GCs. We extract the
Samurović S.
doaj +1 more source
Sedimentology, Volume 69, Issue 5, Page 2284-2318, August 2022., 2022 Abstract The sedimentary record of the Pahrump Group in Death Valley comprises well‐exposed successions of mixed carbonate and siliciclastic deposits. Despite the abundance of studies focussing on the depositional dynamics of mixed carbonate – siliciclastic deposition in the Phanerozoic, the record of similar Proterozoic examples is comparatively ...
Daniel Smrzka +7 more
wiley +1 more source
The Effect of Superpositions on the Planetary Nebula Luminosity Function
The Astrophysical Journal, 2023 Planetary nebula (PN) surveys in systems beyond ∼10 Mpc often find high-excitation, point-like sources with [O iii ] λ 5007 fluxes greater than the apparent bright-end cutoff of the planetary nebula luminosity function (PNLF).
Owen Chase +3 more
doaj +1 more source
Formation of Magnesium Carbonates on Earth and Implications for Mars
Journal of Geophysical Research: Planets, Volume 126, Issue 7, July 2021., 2021 Abstract Magnesium carbonates have been identified within the landing site of the Perseverance rover mission. This study reviews terrestrial analog environments and textural, mineral assemblage, isotopic, and elemental analyses that have been applied to establish formation conditions of magnesium carbonates.
Eva L. Scheller +12 more
wiley +1 more source