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| González-Regalado,María Luz; Ruiz,Francisco; Abad,Manuel; Civis,Jorge; González Delgado,José Ángel; Muñoz,Juan Manuel; García,Edith Xio Mara; Pendón,José Gabriel; Toscano,Antonio. |
| Lithostratigraphical and faunal analyses of five Pliocene sections located in the southwestern Guadalquivir Basin (S Spain) permit reveal three main facies, which represent shallow marine fairweather conditions (FA-1), storm events (FA-2) and littoral/fluvial environments (FA-3). The vertical disposition of these facies indicates a regressive sequence. The statistical study of foraminiferal populations revealed five infralittoral and circalittoral assemblages. Vertical and horizontal variations among these assemblages, the P/B ratio and four diversity indices, together with the mollusc distributions, suggest the presence of a shallow marine palaeoenvironment in this area in the Lower Pliocene, with an increasing depth towards the southwestern. The main... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Benthic foraminifera; Storms; Lower Pliocene; SW Spain. |
| Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142009000200011 |
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| Meléndez-Martínez,David; Muñoz,Juan Manuel; Barraza-Garza,Guillermo; Cruz-Peréz,Martha Sandra; Gatica-Colima,Ana; Alvarez-Parrilla,Emilio; Plenge-Tellechea,Luis Fernando. |
| Abstract Background Globally, snake envenomation is a well-known cause of death and morbidity. In many cases of snakebite, myonecrosis, dermonecrosis, hemorrhage and neurotoxicity are present. Some of these symptoms may be provoked by the envenomation itself, but others are secondary effects of the produced oxidative stress that enhances the damage produced by the venom toxins. The only oxidative stress effect known in blood is the change in oxidation number of Fe (from ferrous to ferric) in hemoglobin, generating methemoglobin but not in other macromolecules. Currently, the effects of the overproduction of methemoglobin derived from snake venom are not extensively recorded. Therefore, the present study aims to describe the oxidative stress induced by... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attenuated total reflectance-Fourier transform infrared spectroscopy; Crotalus molossus nigrescens; Venom; Snake venom; Methemoglobin; Oxidative stress; Oxyhemoglobin. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100311 |
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