منابع مشابه
Channel surfing: creating different color combinations from multiple-label images.
Mapping the distribution of more than one macromolecule in a tissue is now a relatively routine technique that uses multiple-label fluorescence (2,7) and one of several different digital imaging methods (9,10), including wide-field, confocal, deconvolution, or multiple-photon microscopy. Methods of specimen preparation continue to be refined, especially as new fluorescent probes are developed a...
متن کاملSurfing Peer-to-Peer IPTV: Distributed Channel Switching
It is now common for IPTV systems attracting millions of users to be based on a peer-to-peer (P2P) architecture. In such systems, each channel is typically associated with one P2P overlay network connecting the users. This significantly enhances the user experience by relieving the source from dealing with all connections. Yet, the joining process resulting in a peer to be integrated in channel...
متن کاملGene surfing
Spatially resolved genetic data is increasingly used to reconstruct the migrational history of species. To assist such inference, we study, by means of simulations and analytical methods, the dynamics of neutral gene frequencies in a population undergoing a continual range expansion in one dimension. During such a colonization period, lineages can fix at the wave front by means of a “surfing” m...
متن کاملSurfing on Calcium Waves
A key question in brain development is how migration of neuronal precursors is guided to establish the ordered laminar layers. In the April 20, 2007 issue of Cell, Guan et al. show that the leading process of migrating cerebellar granule neurons senses repulsive Slit molecules by generating a Ca(2+) wave that propagates to the soma to cause reversal of cell polarity and migration.
متن کاملEnergy Efficient Surfing
Surfing is a latchless pipelining technique where the propagation delays of gates and other logic functions are modulated to produce event attractors. We describe a test chip that demonstrates a surfing pipeline ring and then introduce new circuits that dramatically reduce the energy overhead for surfing. Our test chip implements a twelve-stage, surfing ring that supports two independent waves ...
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ژورنال
عنوان ژورنال: The Journal of Clinical Endocrinology & Metabolism
سال: 2002
ISSN: 0021-972X,1945-7197
DOI: 10.1210/jc.2002-021458