Results 31 to 40 of about 1,215,607 (285)

Spectrum Sharing in the Sky and Space: A Survey

Sensors, 2022
In order to achieve the vision of seamless wireless communication coverage, a space–air–ground integrated network is proposed as a key component of the sixth-generation (6G) mobile communication system. However, the spectrum used by aerial networks has become gradually crowded with the increase in wireless devices.
Ling Zhang, Zhiqing Wei, Lin Wang 0082, Xin Yuan 0004, Huici Wu, Wenyan Xu   +5 more
openaire   +4 more sources

Aircraft surveys for air eDNA: probing biodiversity in the sky [PDF]

PeerJ, 2023
Air is a medium for dispersal of environmental DNA (eDNA) carried in bioaerosols, yet the atmosphere is mostly unexplored as a source of genetic material encompassing all domains of life.
Kimberly L. Métris, Jérémy Métris
doaj   +2 more sources

Mapping The Sky - Surveys With Schmidt Telescopes [PDF]

Symposium - International Astronomical Union, 1988
This paper describes the sky surveys carried out over the past 30 years by the three large Schmidt Telescopes; the Palomar 1.2m Schmidt, the ESO 1m Schmidt and the UK 1.2m Schmidt. Developments in photographic technology, the reproduction of the surveys as sky atlases and problems associated with the storage of original plates are discussed.
D. H. Morgan, S. B. Tritton
openaire   +1 more source

Verification of Photometric Parallaxes with Gaia DR2 Data

Galaxies, 2018
Results of comparison of Gaia DR2 parallaxes with data derived from a combined analysis of 2MASS (Two Micron All-Sky Survey), SDSS (Sloan Digital Sky Survey), GALEX (Galaxy Evolution Explorer), and UKIDSS (UKIRT Infrared Deep Sky Survey) surveys in four ...
Oleg Malkov, Sergey Karpov, Dana Kovaleva, Sergey Sichevsky, Dmitry Chulkov, Olga Dluzhnevskaya, Alexey Kniazev, Areg Mickaelian, Alexey Mironov, Jayant Murthy, Alexey Sytov, Gang Zhao, Aleksandr Zhukov   +12 more
doaj   +1 more source

Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes

FEBS Open Bio, EarlyView.
Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard, Emma‐Jayne Proctor, Jiawa Wang, Nikolas P. Johnston, Andrew Hayes, Georgia McCorkell, Haibo Yu, Jai Tree, Mark R. Davies, Mark J. Walker, Ronald Sluyter, Stephan Brouwer, Martina L. Sanderson‐Smith   +12 more
wiley   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

The ESO Sky Surveys [PDF]

International Astronomical Union Colloquium, 1984
AbstractTechnical aspects of the production of photographic Sky Surveys and Atlasses are discussed. The need to optimize all factors, e.g. telescope site, telescope optics, mechanics and control system, hypersensitization, calibration, processing and reproduction is illustrated by the ESO 1m Schmidt telescope and the ESO Sky Surveys.
openaire   +1 more source

Exploring the Variable Sky with the Sloan Digital Sky Survey [PDF]

The Astronomical Journal, 2007
We quantify the variability of faint unresolved optical sources using a catalog based on multiple SDSS imaging observations. The catalog covers SDSS Stripe 82, and contains 58 million photometric observations in the SDSS ugriz system for 1.4 million unresolved sources.
Sesar, Branimir, Ivezic, Zeljko, Lupton, Robert H., Juric, Mario, Gunn, James E., Knapp, Gillian R., De Lee, Nathan, Smith, J. Allyn, Miknaitis, Gajus, Lin, Huan, Tucker, Douglas, Doi, Mamoru, Tanaka, Masayuki, Fukugita, Masataka, Holtzman, Jon, Kent, Steve, Yanny, Brian, Schlegel, David, Finkbeiner, Douglas, Padmanabhan, Nikhil, Rockosi, Constance M., Bond, Nicholas, Lee, Brian, Stoughton, Chris, Jester, Sebastian, Harris, Hugh, Harding, Paul, Brinkmann, Jon, Schneider, Donald P., York, Donald, Richmond, Michael W., Vanden Berk, Daniel   +31 more
openaire   +5 more sources

A Probabilistic Framework for Population Studies of the Solar Neighborhood: Application to SDSS-V and Gaia

The Astronomical Journal
Studies of the solar neighborhood require spectroscopic follow-up of stars identified in astrometric surveys to fully characterize their physical properties. The SDSS-V Solar Neighborhood Census (SNC) is a dedicated program to observe stars within 100 pc.
Ilija Medan, Keivan G. Stassun, Zachary Way, Guy S. Stringfellow, Alexandre Roman-Lopes, Jiadong Li, Madeline Lucey, Andrew R. Casey, Bárbara Rojas-Ayala, Ricardo López-Valdivia, José G. Fernández-Trincado   +10 more
doaj   +1 more source

Searching for New Supernova Remnant Candidates from the VTSS Survey

Cumhuriyet Science Journal, 2022
The Virginia Tech Spectral Line Survey (VTSS) Galactic Plane Hydrogen-Alpha Survey has the strong ability to search and discover many different types of objects that cannot be identified clearly on red plates and by other Multi-Wavelength Sky Surveys ...
Elif Beklen
doaj   +1 more source