Results 41 to 50 of about 1,089,305 (292)
Fishes, 2022 Elasmobranchii (sharks and rays), which have peculiar and vulnerable life-history traits, are highly threatened by fishing activities. Indeed, between 53% and 71% of Mediterranean elasmobranch species are at risk of extinction. In this context, using the
Fabio Falsone +7 more
doaj +1 more source
Multi-Messenger Astronomy: Cosmic Rays, Gamma-Rays, and Neutrinos
, 2003 Although cosmic rays were discovered a century ago, we do not know where or how they are accelerated. There is a realistic hope that the oldest problem in astronomy will be solved soon by ambitious experimentation: air shower arrays of 10,000 kilometer ...
Halzen, F.
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Connecting blazars with ultra high energy cosmic rays and astrophysical neutrinos [PDF]
, 2017 We present a strong hint of a connection between high energy $\gamma$-ray emitting blazars, very high energy neutrinos, and ultra high energy cosmic rays.
Caccianiga, Lorenzo +4 more
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Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
The formation of heterogeneous storeys in the cambium on the example of Laburnum anagyroides Medik
Acta Agrobotanica, 2012 The formation of the storeyed pattern of cambium in the first two years of cambial activity and the structure of mature cambium was examined in Laburnum anagyroides, a decorative shrub growing in temperate climate.
Anna Wilczek
doaj +1 more source
Ecology and Evolution, 2021 Batoids, distributed from shallow to abyssal depths, are considerably vulnerable to anthropogenic threats. Data deficiencies on the distribution patterns of batoids, however, challenge their effective management and conservation.
Fernando Tuya +8 more
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Diffuse Galactic Gamma Rays from Shock-Accelerated Cosmic Rays
, 2012 A shock-accelerated particle flux \propto p^-s, where p is the particle momentum, follows from simple theoretical considerations of cosmic-ray acceleration at nonrelativistic shocks followed by rigidity-dependent escape into the Galactic halo.
A. R. Bell +10 more
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Reports on Progress in Physics, 2006 Gamma-ray bursts are the most luminous explosions in the Universe, and their origin and mechanism are the focus of intense research and debate. More than three decades after their discovery, and after pioneering breakthroughs from space and ground experiments, their study is entering a new phase with the recently launched Swift satellite. The interplay
openaire +4 more sources
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
Borromean rays and hyperplanes [PDF]
, 2012 Three disjoint rays in euclidean 3-space form Borromean rays provided their union is knotted, but the union of any two components is unknotted. We construct infinitely many Borromean rays, uncountably many of which are pairwise inequivalent.
Jack S. Calcut +4 more
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