Results 21 to 30 of about 520,741 (384)

Commissioning Measurements of Flattening Filter and Flattening Filter Free Photon Beams Using a TrueBeam Stx® Linear Accelerator [PDF]

open access: yesIranian Journal of Medical Physics, 2021
Introduction: TrueBeam STx® latest generation linear accelerators (linacs) were installed at Sheikh Khalifa International University Hospital Casablanca, Morocco, this study aimed to present and analyse the dosimetric characteristics obtained during the ...
Kamal SAIDI   +3 more
doaj   +1 more source

Height Dependency of Solar Eclipse Effects: The Ionospheric Perspective

open access: yesJournal of Geophysical Research: Space Physics, 2020
A reliable interpretation of solar eclipse effects on the geospace environment, and on the ionosphere in particular, necessitates a careful consideration of the so‐called eclipse geometry.
T. Verhulst, S. Stankov
semanticscholar   +1 more source

Identifying Candidate Atmospheres on Rocky M Dwarf Planets via Eclipse Photometry [PDF]

open access: yesAstrophysical Journal, 2019
Most rocky planets in the galaxy orbit a cool host star, and there is large uncertainty among theoretical models whether these planets can retain an atmosphere.
D. Koll   +6 more
semanticscholar   +1 more source

Anthropogenic signals recorded in an ice core from Eclipse Icefield, Yukon Territory, Canada [PDF]

open access: yes, 2001
Trends in the annual flux of sulfate and nitrate in a new ice core collected at an elevation of 3017 m on Eclipse Icefield, 45 km northeast of Mt. Logan were examined to determine the effect of anthropogenic activity on precipitation chemistry in the ...
Wake, Cameron P, Yalcin, Kaplan
core   +3 more sources

Constraining recent lead pollution sources in the North Pacific using ice core stable lead isotopes [PDF]

open access: yes, 2012
Trends and sources of lead (Pb) aerosol pollution in the North Pacific rim of North America from 1850 to 2001 are investigated using a high-resolution (subannual to annual) ice core record recovered from Eclipse Icefield (3017 masl; St.
Gross, B H   +6 more
core   +2 more sources

An Enlightened «Tonadilla» in the Context of Barcelona: Jacinto Valledor’s «El eclipse» (1778)

open access: yesCuadernos Dieciochistas, 2015
Despite the interest that emerged in the last decade to rescue the eighteenth-century tonadilla from oblivion, we still know little about the links between this genre and the Enlightenment ideology of the time.
Aurèlia PESSARRODONA PÉREZ
doaj   +1 more source

Images and Spectra of the 2017 Total Solar Eclipse Corona From Our Oregon Site

open access: yesFrontiers in Astronomy and Space Sciences, 2018
We report on early results from a suite of instruments for imaging and spectra we deployed to Salem, Oregon, for 2 min of totality at the August 21, 2017, total solar eclipse.
Jay M. Pasachoff   +10 more
doaj   +1 more source

Spitzer Secondary Eclipses of Qatar-1b [PDF]

open access: yes, 2017
Previous secondary eclipse observations of the hot Jupiter Qatar-1b in the Ks band suggest that it may have an unusually high day side temperature, indicative of minimal heat redistribution. There have also been indications that the orbit may be slightly
Deming, Drake   +4 more
core   +3 more sources

Cost-effectiveness analysis of infant pneumococcal vaccination with PHiD-CV in Korea

open access: yesHuman Vaccines & Immunotherapeutics, 2018
Background: Streptococcus pneumoniae and non-typeable Haemophilus influenzae (NTHi) can cause invasive pneumococcal diseases (IPD), pneumonia, and acute otitis media (AOM).
Xu-Hao Zhang   +4 more
doaj   +1 more source

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