منابع مشابه
Quartet Compatibility and the Quartet Graph
A collection P of phylogenetic trees is compatible if there exists a single phylogenetic tree that displays each of the trees in P. Despite its computational difficulty, determining the compatibility of P is a fundamental task in evolutionary biology. Characterizations in terms of chordal graphs have been previously given for this problem as well as for the closely-related problems of (i) deter...
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we used dbsa and nano-magnetic for the synthesis of amido alkylnaphtols.
15 صفحه اولA quartet neural system model orchestrating sleep and wakefulness mechanisms.
Physiological knowledge of the neural mechanisms regulating sleep and wakefulness has been advanced by the recent findings concerning sleep/wakefulness-related preoptic/anterior hypothalamic and perifornical (orexin-containing)/posterior hypothalamic neurons. In this paper, we propose a mathematical model of the mechanisms orchestrating a quartet neural system of sleep and wakefulness composed ...
متن کاملAIDS Quartet
Not long ago, I e-mailed Donald McNeil, Jr. I wanted to know how many HIV/AIDS articles the New York Times reporter had written over the years. “Fiddling with the Times’ website and internal library . . . produces 201 to 495,” McNeil replied. “I think it’s safe to say I’ve written 400 stories about AIDS.” At the end of this piece I’ll share McNeil’s favorite, but for now I’ll state the obvious....
متن کاملShort Quartet Puzzling: A New Quartet-Based Phylogeny Reconstruction Algorithm
Quartet-based phylogeny reconstruction methods, such as Quartet Puzzling, were introduced in the hope that they might be competitive with maximum likelihood methods, without being as computationally intensive. However, despite the numerous quartet-based methods that have been developed, their performance in simulation has been disappointing. In particular, Ranwez and Gascuel, the developers of ...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1975
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.54.230