Mostrando 421 - 440 Resultados de 6,595 Para Buscar '"Empirical evidence"', tiempo de consulta: 0.22s Limitar resultados
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    “…BACKGROUND: We aimed to provide empirical evidence of how spectrum effects can affect the sensitivity of histological assessment of Helicobacter pylori infection, which may contribute to explain the heterogeneity in prevalence estimates across populations with expectedly similar prevalence. …”
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  3. 423
    por Haimes, Erica, Taylor, Ken
    Publicado 2011
    “…We then provide empirical evidence, from a study of embryo donation and of embryo donors' views, to substantiate some of their speculations about the problems associated with requesting fresh embryos. …”
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    “…Here we provide the first empirical evidence that polyploid advantage in these environments is caused by two distinct processes: homeostatic maintenance of reproductive output under elevated abiotic stress, and fixed differences in seed development. …”
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