980 resultados para farmacia


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Se citan algunos táxones de la comarca y su caracterización fitosociológica.

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Se comentan brevemente algunos táxones interesantes herborizados en la comarca de Las Corchuelas (Parque Natural de Monfragiie).

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Se comentan brevemente algunos taxones herborizados en la comarca de La Sagra. Se incluyen claves para determinar especies de los géneros Legousia, Scabiosa y Spergularia.

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Se relacionan y comentan una serie de taxones poco conocidos de la comarca madrileña del Embalse de Santillana.

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El nombre Carici sylvaticae-Fagetum (sylvaticae) (Rivas-Martínez 1965) C. Navarro 1982 [Contribución al estudio de la flora y la vegetación del Duranguesado y la Busturia (Vizcaya): 81-82. Ed. Univ. Complutense, Madrid] fue propuesto para designar los hayedos basófilos de territorios orocantábricos y cántabro-euskaldunes, en sustitución del ilegítimo (Art. 34) Melico (uniflorae)-Fagetum cantabricum Rivas-Martínez 1965 [Anales Inst. Bot. Cavanilles 22: 383].

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The syntaxonomical separation of two associations of evergreen-oak forests in the Cantabrian mountain range (Orocantabrian and Cantabrian-Atlantic biogeographical Provinces) has recently been contemplated.

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Sobre los aspectos nomenclaturales de este sintaxon, especialmente sobre su autoría, ha habido cierta confusión.

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Myrrhido-Valerianetum pyrenaicae versus Chaerophyllo hirsuti-Valerianetum pyrenaicae

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Nuevos nombres para dos subasociaciones de Poo bulbosae-Trifolietum subterranei Rivas Goday 1964.

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In this study, Evernia prunastri, a lichen growing in its natural habitat in Morocco was analysed for the concentration of five heavy metals (Fe, Pb, Zn, Cu and Cr) from eleven sites between Kenitra and Mohammedia cities. The control site was Dar Essalam, an isolated area with low traffic density and dense vegetation. In the investigated areas, the concentration of heavy metals was correlated with vehicular traffic, industrial activity and urbanization. The total metal concentration was highest in Sidi Yahya, followed by Mohammedia and Bouznika. The coefficient of variation was higher for Pb and lower for Cu, Zn and Fe. The concentrations of most heavy metals in the thalli differed significantly between sites (p<0.01). Principal component analysis (PCA) revealed a significant correlation between heavy metal accumulation and atmospheric purity index. This study demonstrated also that the factors most strongly affecting the lichen flora were traffic density, the petroleum industry and paper factories in these areas. Overall, these results suggest that the index of atmospheric purity and assessment of heavy metals in lichen thalli are good indicators of the air quality at the studied sites.

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Xanthoria parietina, common foliose lichen, growing in its natural habitat, was analysed for the concentration of five heavy metals (Fe, Cr, Zn, Pb and Cu) from different forest sites of North East of Morocco (Kenitra, Sidi Boughaba, Mkhinza, Ceinture Verte near Temara city, Skhirate, Bouznika and Mohammedia). The quantification was carried out by inductively coupled plasma - atomic emission spectrometry (ICP-AES). Results were highly significant p<0,001. The concentration of metals is correlated with the vehicular activity and urbanization. The total metal concentration is highest at the Kenitra area, followed by Ceinture Verte site near Temara city, which experience heavy traffic throughout the year. Scanning electron microscopy (SEM) of particulate matter on lichen of Xanthoria parietina was assessed as a complementary technique to wet chemical analysis for source apportionment of airborne contaminant. Analysis revealed high level of Cu, Cr, Zn and Pb in samples near roads.  

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Tesis (Maestría en Ciencias con Orientación Terminal en Química Biomédica) UANL

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Tesis (Maestría en Ciencias con Orientación en Farmacia) UANL, 2011.

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Tesis (Maestría en Ciencias con Orientación en Farmacia) UANL, 2011.

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Tesis (Maestría en Ciencias con Orientación en Farmacia) UANL, 2011.