979 resultados para technetium 99


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Author's pseud., Franz Held, at head of title.

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Thesis (doctoral)--Universitat Bern.

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Trägerband: 'Martinus Bucerus' (erster Text eines Sammelbandes, num. '133')

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Trägerband: 15/474; Vorbesitzer: Dominikanerkloster Frankfurt am Main

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Fil: Karczmarczyk, Pedro. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación. Instituto de Investigaciones en Humanidades y Ciencias Sociales (UNLP-CONICET); Argentina.

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his paper seeks to map a decade of organizational downsizing in Australia utilizing a comprehensive longitudinal data set of 4153 firms. Aggregate downsizing measures conceal extensive change within organizations. We seek to assess these processes by comparing a conventional downsizing measure with more specific occupational downsizing measures. The results show the contours of change in Australia over the 1990s; indicate that there are distinctive and contrasting trends; and raise significant issues for future theoretical and empirical research.

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The interferon (IFN) response is the first line of defense against viral infections, and the majority of viruses have developed different strategies to counteract IFN responses in order to ensure their survival in an infected host. In this study, the abilities to inhibit IFN signaling of two closely related West Nile viruses, the New York 99 strain (NY99) and Kunjin virus (KUN), strain MRM61C, were analyzed using reporter plasmid assays, as well as immunofluorescence and Western blot analyses. We have demonstrated that infections with both NY99 and KUN, as well as transient or stable transfections with their replicon RNAs, inhibited the signaling of both alpha/beta IFN (IFN-alpha/beta) and gamma IFN (IFN-gamma) by blocking the phosphorylation of STAT1 and its translocation to the nucleus. In addition, the phosphorylation of STAT2 and its translocation to the nucleus were also blocked by KUN, NY99, and their replicons in response to treatment with IFN-alpha. IFN-alpha signaling and STAT2 translocation to the nucleus was inhibited when the KUN nonstructural proteins NS2A, NS2B, NS3, NS4A, and NS4B, but not NS1 and NS5, were expressed individually from the pcDNA3 vector. The results clearly demonstrate that both NY99 and KUN inhibit IFN signaling by preventing STAT1 and STAT2 phosphorylation and identify nonstructural proteins. responsible for this inhibition.