Ambiente e Sustentabilidade / Environment and Sustainability
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- Zinc and cooper accumulation in the clam Ruditapes Decussatus L.. (Bivalvia) field mesocosms and laboratory experimentsPublication . Castro, L.; Sobral, P.; Costa, Maria Helena; Peres, I.; Caeiro, Sandra
- Ecologia geral : classificação dos ecossistemasPublication . Carapeto, Cristina; Trindade, Ana José; Almeida, VítorApresenta e descreve os principais tipos de ecossistemas terrestres e aquáticos, bem como as relações que se estabelecem entre os seus organismos.
- Ecologia geral : princípios e conceitosPublication . Carapeto, Cristina; Trindade, Ana José; Almeida, VítorApresenta os princípios e conceitos fundamentais da Ecologia como ciência.
- Ecologia geral : transferência de energia nos ecossistemasPublication . Carapeto, Cristina; Trindade, Ana José; Almeida, VítorApresenta e descreve as transferências de energia que ocorrem entre os diversos organismos que constituem os ecossistemas terrestres e aquáticos.
- Desenvolvimento de uma base de dados episódica de emissões biogénicas, com elevada discretização espacialPublication . Nunes, M.; Ferreira, Célia; Barros, N.; Borrego, C.
- Ergonomia e antropometria: haverá um ergónomo no barco?Publication . Silva, Aurora; Freitas, Isabel; Lacomblez, Marianne; Tomás, José Augusto; Melo, RosárioEstrutura funcional da atividade piscatória tendo em consideração situações que visam a segurança no trabalho.
- Ergonomia e antropometria: ergonomia no hospitalPublication . Silva, Aurora; Freitas, Isabel; Lacomblez, Marianne; Melo, Rosário; Tomás, José AugustoReunião, discussão pluridisciplinar sobre a carga física e organização do espaço em serviço de ortopedia.
- Parque Natural da Arrábida e Área de Paisagem Protegida do Sudoeste AlentejanoPublication . Caeiro, SandraIn this section a general characterization of the coastal arca of the Parque Nacional da Arrábida (PNA) is given. The Parque Nacional da Arrábida located in the most southern part of de Setúbal peninsula, occupies an area of 10.800 Ha. Geographically the PNA is placed between the parallels 38° 27"- 38° 38'northlatitude and 8°55" - 9° 50' longitude west (Trindade, 1988). The area contains a small chain of limestone outcrops with a maximum elevation of S00 m running parallel to the southern cdge of Setúbal peninsula, ending in steep cliffs rising from the sea. (Catarino er al., 1981).
- Segurança e higiene do trabalho: prevenção e protecção contra incêndiosPublication . Miguel, Sérgio; Perestrelo, Gonçalo; Vaz, Luís Armando; Silva, Ana PaulaIlustração das causas de incêndios. Equipamentos para prevenção e proteção. Técnicas de extinção. Simulações de combate a incêndio.
- Leaching of pyrite by acidophilic, heterotrophic, iron-oxidizing bacteria in pure and mixed culturePublication . Nicolau, Paula Bacelar; Johnson, D. BarrieSeven strains of heterotrophic iron-oxidizing acidophilic bacteria were examined to determine their abilities to promote oxidative dissolution of pyrite (FeS2) when they were grown in pure cultures and in mixed cultures with sulfur-oxidizing Thiobacillus spp. Only one of the isolates (strain T-24) oxidized pyrite when it was grown in pyrite-basal salts medium. However, when pyrite-containing cultures were supplemented with 0.02% (wt/vol) yeast extract, most of the isolates oxidized pyrite, and one (strain T-24) promoted rates of mineral dissolution similar to the rates observed with the iron-oxidizing autotroph Thiobacillus ferrooxidans. Pyrite oxidation by another isolate (strain T-21) occurred in cultures containing between 0.005 and 0.05% (wt/vol) yeast extract but was completely inhibited in cultures containing 0.5% yeast extract. Ferrous iron was also needed for mineral dissolution by the iron-oxidizing heterotrophs, indicating that these organisms oxidize pyrite via the “indirect” mechanism. Mixed cultures of three isolates (strains T-21, T-23, and T-24) and the sulfur-oxidizing autotroph Thiobacillus thiooxidans promoted pyrite dissolution; since neither strains T-21 and T-23 nor T. thiooxidans could oxidize this mineral in yeast extract-free media, this was a novel example of bacterial synergism. Mixed cultures of strains T-21 and T-23 and the sulfur-oxidizing mixotroph Thiobacillus acidophilus also oxidized pyrite but to a lesser extent than did mixed cultures containing T. thiooxidans. Pyrite leaching by strain T-23 grown in an organic compound-rich medium and incubated either shaken or unshaken was also assessed. The potential environmental significance of iron-oxidizing heterotrophs in accelerating pyrite oxidation is discussed.