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Browsing by Issue Date, starting with "2021-07-02"

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  • Prevenção da COVID-19: o que sabemos?
    Publication . Alves, Helena
    Sumário: SARS-Cov-2, aparecimento e evolução da pandemia. Estirpe original e variantes. Ligação do vírus às células e resposta do hospedeiro. Factores de risco genético. Diagnóstico, formas clínicas de apresentação, sintomas e diferentes formas de evolução da doença. Sintomas pós-Covid. Tratamentos e sua evolução ao longo da pandemia. Formas de transmissão. Riscos a evitar. Novas variantes. Vacinação e eficácia das vacinas para as novas variantes. Re-infecções. Biosegurança, como lição para evitar novas pandemias.
    2021-07-02Lecture Open access Show more
  • Towards a better assessment of the mercury-selenium antagonism in fish
    Publication . Mendes Ribeiro, Mariana; Zephyr, N.; Silva, José Armando; Damion, M.; Guérin, T.; Castanheira, Isabel; Leufroy, A.; Jitaru, P.
    The fish were killed by cutting the spinal cord in t 0 t 1 t 2 and t 3 All the data related to the fish growth were recorded similar growth was observed for all exposure conditions. The levels of Hg T and Se T in the fish diet were also measured by ICP MS. Hg T in control and MeHg spiked diets were 0.05 ±0.002 and 0.24 ±0.01 mg/kg, respectively, whereas Se T were 0.95 ±0.02 mg/kg and 5.41 ±0.36 mg/kg in the control and the spiked diets. Se saturation ( p = 0.30) occurs after two months of fish be exposed throught diet to SeMet solely. Quasilinear (R 2  0.99) bioaccumulation of Hg in the fish exposed individualy to MeHg during 3 months. Threshold (p = 0.30) in total Hg level is reached in fish exposed simultaneously to MeHg and SeMet. ↓ of Hg burden  18%) after two months of fish exposure to SeMet and no MeHg. Possible Hg detoxification due to Se supplementation.
    2021-07-02Conference object Restricted access Show more