Results 81 to 90 of about 3,685,182 (335)

A benchmark event sequence for mass ejection onset studies [PDF]

open access: yesAstronomy & Astrophysics, 2006
Aims. In this study, we report on the spectroscopic observations of a particularly well-observed flare and coronal mass ejection (CME) event sequence which we feel can be used as a benchmark study for CME onsets. Methods. Specifically, we report on a set of extreme-ultraviolet (EUV) spectroscopic observations using the Solar and Heliospheric ...
R. A. Harrison, D. Bewsher
openaire   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

Should cities hosting mass gatherings invest in public health surveillance and planning? Reflections from a decade of mass gatherings in Sydney, Australia

open access: yesBMC Public Health, 2009
Background Mass gatherings have been defined by the World Health Organisation as "events attended by a sufficient number of people to strain the planning and response resources of a community, state or nation".
Muscatello David   +4 more
doaj   +1 more source

Study of multi black hole and ring singularity apparent horizons

open access: yes, 2010
We study critical black hole separations for the formation of a common apparent horizon in systems of $N$ - black holes in a time symmetric configuration.
A. Papapetrou   +10 more
core   +1 more source

Timing and pacing of the Late Devonian mass extinction event regulated by eccentricity and obliquity

open access: yesNature Communications, 2017
The Late Devonian envelops one of Earth’s big five mass extinction events at the Frasnian–Famennian boundary (374 Ma). Environmental change across the extinction severely affected Devonian reef-builders, besides many other forms of marine life.
D. De Vleeschouwer   +7 more
semanticscholar   +1 more source

Particle-flow reconstruction and global event description with the CMS detector [PDF]

open access: yes, 2017
The CMS apparatus was identified, a few years before the start of the LHC operation at CERN, to feature properties well suited to particle-flow (PF) reconstruction: a highly-segmented tracker, a fine-grained electromagnetic calorimeter, a hermetic hadron
Cms Collaboration
semanticscholar   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Persistent global marine euxinia in the early Silurian

open access: yesNature Communications, 2020
The Late Ordovician mass extinction has been attributed to extended marine anoxia. Here, the authors use a metal isotope mass balance model and find the marine anoxic event lasted over 3 million years, notably longer than the anoxic event associated with
Richard G. Stockey   +5 more
doaj   +1 more source

Bioindicators of severe ocean acidification are absent from the end-Permian mass extinction

open access: yesScientific Reports, 2022
The role of ocean acidification in the end-Permian mass extinction is highly controversial with conflicting hypotheses relating to its timing and extent.
William J. Foster   +5 more
doaj   +1 more source

The Milky Way's Fermi Bubbles: Echoes of the Last Quasar Outburst?

open access: yes, 2011
{\it Fermi}-LAT has recently detected two gamma ray bubbles disposed symmetrically with respect to the Galactic plane. The bubbles have been suggested to be in a quasi-steady state, inflated by ongoing star formation over the age of the Galaxy.
A. R. King   +56 more
core   +1 more source

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