Results 21 to 30 of about 241,346 (164)

Comparison between a handheld ultrasound device and a traditional ultrasound for performing transcranial sonography in patients with Parkinson's disease

Brain and Behavior, Volume 13, Issue 2, February 2023., 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 ...
Maria A. S. Paes, Denise H. Nicaretta, Regina M. P. Alvarenga, Ana L. Z. Rosso, Rodrigo T. Brisson, Rita C.L. Fernandes   +5 more
wiley   +1 more source

The Structure of Stellar Disks in Isolated Lenticular Galaxies [PDF]

Astronomical Journal, 2020
We have obtained imaging data in two photometric bands, g and r, for a sample of 42 isolated lenticular galaxies with the Las Cumbres Observatory 1 m telescope network. We have analyzed the structure of their large-scale stellar disks.
O. Sil’chenko, A. Kniazev, E. Chudakova   +2 more
semanticscholar   +1 more source

The role of siliciclastics in carbonate fabric diversity and preservation: A case study from the Neoproterozoic carbonate − siliciclastic Horse Thief Springs Formation, Death Valley

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, Kristian Kuzel, Domenico Chiarella, Michael M. Joachimski, Thomas M. Vandyk, Christoph Kettler, Dan P. Le Heron, Stephen Lokier   +7 more
wiley   +1 more source

Laboratory exploration of mineral precipitates from Europa's subsurface ocean

Journal of Applied Crystallography, Volume 54, Issue 5, Page 1455-1479, October 2021., 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 ...
Stephen P. Thompson, Hilary Kennedy, Benjamin M. Butler, Sarah J. Day, Emmal Safi, Aneurin Evans   +5 more
wiley   +1 more source

The morphological study of spiral/lenticular galaxies in some pairs [PDF]

NRIAG Journal of Astronomy and Geophysics, 2018
Y.H.M. Hendy, Gamal B. Ali
openalex   +2 more sources

Observations of Lenticular Galaxies at the 6-m Telescope of the Special Astrophysical Observatory [PDF]

GROUND-BASED ASTRONOMY IN RUSSIA. 21ST CENTURY. Proceedings of the All-Russian Conference, 2020
This is a historical review covering the last 30 years of the observational study of lenticular galaxies at the 6m telescope BTA of the Special Astrophysical Observatory of the Russian Academy of Sciences.
O. Sil’chenko
semanticscholar   +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, Carl Swindle, John Grotzinger, Holly Barnhart, Surjyendu Bhattacharjee, Bethany L. Ehlmann, Ken Farley, Woodward W. Fischer, Rebecca Greenberger, Miquela Ingalls, Peter E. Martin, Daniela Osorio‐Rodriguez, Ben P. Smith   +12 more
wiley   +1 more source

JWST Reveals a Population of Ultrared, Flattened Galaxies at 2 ≲ z ≲ 6 Previously Missed by HST

The Astrophysical Journal Letters, 2023
With just a month of data, JWST is already transforming our view of the universe, revealing and resolving starlight in unprecedented populations of galaxies.
Erica J. Nelson, Katherine A. Suess, Rachel Bezanson, Sedona H. Price, Pieter van Dokkum, Joel Leja, Bingjie Wang, Katherine E. Whitaker, Ivo Labbé, Laia Barrufet, Gabriel Brammer, Daniel J. Eisenstein, Justus Gibson, Abigail I. Hartley, Benjamin D. Johnson, Kasper E. Heintz, Elijah Mathews, Tim B. Miller, Pascal A. Oesch, Lester Sandles, David J. Setton, Joshua S. Speagle, Sandro Tacchella, Ken-ichi Tadaki, Hannah Übler, John. R. Weaver   +25 more
doaj   +1 more source

Elliptical galaxies: Rotationally distorted, after all [PDF]

Serbian Astronomical Journal, 2009
On the basis of earlier investigations on homeoidally striated Mac Laurin spheroids and Jacobi ellipsoids (Caimmi and Marmo 2005, Caimmi 2006a, 2007), different sequences of configurations are defined and represented in the ellipticity-rotation plane ...
Caimmi R.
doaj   +3 more sources

Clustercentric Distance or Local Density? It Depends on Galaxy Morphology

The Astrophysical Journal, 2023
Determining which between projected local density and distance from the cluster center plays a major role in regulating morphological fractions in clusters is a longstanding debate.
Benedetta Vulcani, Bianca M. Poggianti, Marco Gullieuszik, Alessia Moretti, Jacopo Fritz, Daniela Bettoni, Beatrice Facciolli, Giovanni Fasano, Alessandro Omizzolo   +8 more
doaj   +1 more source