Listar por tema "Ultraviolet Rays"

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  • The association of COVID-19 incidence with temperature, humidity, and UV radiation - A global multi-city analysis. 
    Nottmeyer, Luise; Armstrong, Ben; Lowe, Rachel; Abbott, Sam; Meakin, Sophie; O'Reilly, Kathleen M.; von Borries, Rosa; Schneider, Rochelle; Roye, Dominic; Hashizume, Masahiro; Pascal, Mathilde; Tobias, Aurelio; Vicedo-Cabrera, Ana Maria; Lavigne, Eric; Correa, Patricia Matus; Ortega, Nicolas Valdes; Kyncl, Jan; Urban, Ales; Orru, Hans; Ryti, Niilo; Jaakkola, Jouni; Dallavalle, Marco; Schneider, Alexandra; Honda, Yasushi; Ng, Chris Fook Sheng; Alahmad, Barrak; Carrasco Escobar, Gabriel; Holobac, Iulian Horia; Kim, Ho; Lee, Whanhee; iniguez, Carmen; Bell, Michelle L.; Zanobetti, Antonella; Schwartz, Joel; Scovronick, Noah; Coelho, Micheline de Sousa Zanotti Stagliorio; Saldiva, Paulo Hilario Nascimento; Diaz, Magali Hurtado; Gasparrini, Antonio; Sera, Francesco (Elsevier, 2023)
    Background and aim: The associations between COVID-19 transmission and meteorological factors are scientifically debated. Several studies have been conducted worldwide, with inconsistent findings. However, often these ...
  • Effect of gamma irradiation on phenol content, antioxidant activity and biological activity of black maca and red maca extracts (Lepidium meyenii walp) 
    Zevallos-Concha, A.; Nunez, D.; Gasco Tantachuco, Manuel Enrique; Vasquez, C.; Quispe, M.; Gonzales Rengifo, Gustavo Francisco (Taylor and Francis, 2015)
    This study was performed to determine the effects of gamma irradiation on UV spectrum on maca, total content of polyphenols, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-scavenging activities and in vivo biological activities ...
  • Metal leaching, acidity, and altitude confine benthic macroinvertebrate community composition in Andean streams 
    Loayza Muro, Raul Augusto; Duivenvoorden, Joost F.; Kraak, Michiel H. S.; Admiraal, Wim (Wiley, 2014)
    Andean streams drain metal-rich bedrock and are subjected to an extreme altitude gradient, which may create highly selective conditions for life. The aim of the present study was to evaluate the combined effects of metals ...
  • Persistence of chironomids in metal polluted andean high altitude streams: Does melanin play a role? 
    Loayza Muro, Raul Augusto; Marticorena-Ruiz, Jenny K.; Palomino, Edwin J.; Merritt, Camille; De Baat, Milo L.; Van Gemert, Maarten; Verweij, Rudo A.; Kraak, Michiel H. S.; Admiraal, Wim (American Chemical Society, 2013)
    In high altitude Andean streams an intense solar radiation and coinciding metal pollution allow the persistence of only a few specialized taxa, including chironomids. The aim of the present study was therefore to determine ...
  • Photoprotection against the UVB-induced oxidative stress and epidermal damage in mice using leaves of three different varieties of Lepidium meyenii (maca) 
    Gonzales-Castañeda, C.; Rivera, V.; Chirinos, A.L.; Evelson, P.; Gonzales Rengifo, Gustavo Francisco (Wiley, 2011)
    Background Skin exposure to ultraviolet (UV) B radiation leads to epidermal damage and generation of reactive oxygen species. The photoprotective effect of extracts of three varieties of leaves (red, yellow, and black) ...

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