To explore how a succession of bacteria grown on steel coupons in a marine environment can influence their corrosion process, we designed a microcosm in laboratory to evaluate corrosion kinetics and microbial diversity over 30 days. The results described a clear influence of corrosion by a succession of different bacterial groups. During the initial period, 2-7 days, a sharp increase in the rate of corrosion was detected accompanied by the presence of Alteromonadaceae, Vibrionaceae, Oceanospirillaceae, Rhodobacteraceae, Rhodospirillaceae and Flavobacteriaceae bacteria families. After 15 days, representatives of families Piscirickettsiaceae and Pseudomonadaceae were also described, accompanied by a continuous corrosion process over the coupons. After 30 days, there was a sudden change in the profile of the bacteria present on the steel coupons, with a prevalence of Halomonadaceae family species, and establishment and continuity of the corrosion process by the biofilm grown on the coupons. The results describe differences in microbial diversity over the time, highlighting certain bacterial lithotrophic species that persisted for most of the experiment, through a complex association between bacteria and metal surfaces, which can be a new starting point for development and maintenance of a favorable microenvironment to accelerate corrosion processes.
Este trabalho busca apresentar uma ação de Educação Ambiental (EA) que teve sua origem no seguinte problema motivador: a EA política pode auxiliar para que ocorra a participação da comunidade da área rural do município de Novo Hamburgo, estado do Rio Grande do Sul (RS), nas discussões e elaboração do seu Plano Municipal de Saneamento Básico (PMSB)? Para tentar responder a esta pergunta foram pensadas e realizadas quatro práxis fundamentadas nos objetivos da Carta de Belgrado e orientadas pela metodologia dialógica, a qual aposta nas interações comunicativas em busca de estabelecer um objetivo comum. Assim, os principais resultados decorrentes da ação foram a participação da comunidade nas discussões com o Poder Público para a construção do PMSB, porém a falta de poder deliberativo da população nas políticas públicas é a principal lacuna a preencher para a conquista da participação popular no exercício da cidadania.
The objective of this study was to analyze the relationship between the professionals of the Family Health Units (FHU) from Recife and the Academia da Cidade Program (ACP). A descriptive cross-sectional study with a quantitative approach was performed. The study population consisted of 203 professionals from 48 FHUs located two kilometers away from the ACP centers. Data were collected through the application of a self-administered questionnaire from prescheduled visits to the FHU. The variables were related to socio-demographic aspects, professional category, knowledge about the ACP and interaction between the two services. Data tabulation was conducted in the EpiData Entry software, version 3.1. In addition, the SPSS software, version 10.0, was used for the quantitative analysis and results were shown in absolute and relative frequencies. Most respondents were female (89.2%), aged between 30 and 39 years old (37.4%). The majority (95.0%) claimed to know the ACP and the FHUs in their health district (76.5%), although 81.4% had not performed an intervention in the Program centers. Even though 51.3% informed that the Program conducts interventions in their unit, almost half (50.9%) reported never inviting ACP professionals to staff meetings. The referral and counter-referral of users showed a low frequency both from the FHU to the ACP and from the ACP to the FHU. It can be concluded that, although there is interaction between professionals from the FHU and the ACP, this appears to be incipient, indicating that they have not yet established an integrated and continuous relationship with the ACP.
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