منابع مشابه
A light and a dark side - Cortical reorganization
The gigantic network that makes up the human cerebral cortex is dynamically and unceasingly reorganizing itself. This continuously changing entity is not easy to track, but we can glimpse the living brain by observing the organization within zones representing the first stages of sensory input from the outside world. Primary auditory, visual and somatosensory cortices mirror the spatial arrange...
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“YOUR child’s heart stopped.” There are few more chilling words that parents can hear as they wait for a child who is in surgery. Preventing and treating this devastating event has always been of paramount concern to anesthesiologists. In this issue of ANESTHESIOLOGY, Morray et al. present important new data regarding anesthesiarelated cardiac arrest in children. These data come from the Periop...
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We show how light spin-1 2 or spin-0 particles may be acceptable Dark Matter candidates, provided they annihilate sufficiently strongly through new interactions, such as those induced by a new light neutral spin-1 boson U. The corresponding interaction is stronger than weak interactions at lower energies, but weaker at higher energies. Annihilation cross sections of (axially coupled) spin-1 2 D...
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The discovery of neutrino masses suggests the likely existence of gauge singlet fermions that participate in the neutrino mass generation via the seesaw mechanism. The masses of the corresponding degrees of freedom can range from well below the electroweak scale to the Planck scale. If some of the singlet fermions are light, the sterile neutrinos appear in the low-energy effective theory. They ...
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ژورنال
عنوان ژورنال: Nature
سال: 2001
ISSN: 0028-0836,1476-4687
DOI: 10.1038/35075678