954 resultados para Pyran-2,4-diones


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Accurate characterization of the radio channel in tunnels is of great importance for new signaling and train control communications systems. To model this environment, measurements have been taken at 2.4 GHz in a real environment in Madrid subway. The measurements were carried out with four base station transmitters installed in a 2-km tunnel and using a mobile receiver installed on a standard train. First, with an optimum antenna configuration, all the propagation characteristics of a complex subway environment, including near shadowing, path loss,shadow fading, fast fading, level crossing rate (LCR), and average fade duration (AFD), have been measured and computed. Thereafter, comparisons of propagation characteristics in a double-track tunnel (9.8-m width) and a single-track tunnel (4.8-m width) have been made. Finally, all the measurement results have been shown in a complete table for accurate statistical modeling.

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Gaines studied History and Education at Lincoln and was frequently seen in Memorial Hall chatting with his mentors in the History Department, Drs. W. Sherman Savage and Lorenzo Greene about his future after graduation.

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Two weeks later, Judge Dinwiddie issued his decision in favor of Canada and the University. Houston was expecting this and appealed to the Missouri Supreme Court.

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The May 1951 Ebony Magazine Article "The Strange Disappearance of Lloyd Gaines"

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A cDNA encoding for a functional ornithine decarboxylase has been isolated from a cDNA library of carpels of tomato (Lycopersicon esculentum Mill.). Ornithine decarboxylase in tomato is represented by a single-copy gene that we show to be up-regulated during early fruit growth induced by 2,4-dichlorophenoxyacetic acid and gibberellic acid.