Results 51 to 60 of about 3,363,979 (168)

A Statistical Study of the Si IV Resonance Line Parameters in 19 Be Stars

open access: yesOpen Astronomy, 2011
Using the GR model, we analyze the ultraviolet Si IV resonance lines in the spectra of 19 Be stars of different spectral subtypes, in order to detect the presence of absorption components and to analyze their characteristics.
Antoniou A.   +4 more
doaj   +1 more source

Overlapping Open Clusters NGC 1750 and NGC 1758 behind the Taurus Dark Clouds. II. CCD Photometry in the Vilnius System

open access: yesOpen Astronomy, 2003
Seven-color photometry in the Vilnius system has been obtained for 420 stars down to V = 16 mag in the area containing the overlapping open clusters NGC 1750 and NGC 1758 in Taurus.
Straižys V.   +8 more
doaj   +1 more source

Whole Earth Telescope Headquarters Standard Data Formats

open access: yesOpen Astronomy, 2003
As the WET moves to CCD systems, we move away from the uniformity of the standard WET photometer into an arena where each system can be radically different.
Riddle R. L., Kawaler S. D.
doaj   +1 more source

A device and standard variables to describe microhabitat structure of small mammals based on plant cover

open access: yesBrazilian Journal of Biology
Studies quantifying habitat structure generally use several instruments. This paper aims to propose a new and efficient device to characterize microhabitat structure of small mammals.
S. R. FREITAS   +2 more
doaj   +1 more source

« Personne n’invente seul et en dehors de tout contexte »

open access: yesCahiers d’histoire, 2017
Pascal Brioist, Johann Petitjean
doaj   +1 more source

Sharing techniques [PDF]

open access: yesBritish Dental Journal, 2019
Smyth, J., Toole, J.
openaire   +3 more sources

Grand Challenge at the Frontiers of Synaptic Neuroscience

open access: yesFrontiers in Synaptic Neuroscience, 2021
P. Jesper Sjöström
doaj   +1 more source

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