Global RCAAP Repository | PISTA Digital

Background: There has been a growing interest in environmental education programs to improve environmental awareness and behavior change among school-aged youth. Yet, assessment of the approaches aligned with citizen science principles emphasizing community participation and empowerment is scarce. The present study aimed to explore the acceptability of the “ECOCIDADANIA” environmental education program targeted at youth in rural areas. Methods: The program was applied for two years in the municipality of Gouveia, and it involved nature walks methodologies combined with citizen science. A total of 107 students participated in the program. Eighteen participants (13 youth and 5 teachers) were selected as key informants, and semistructured interviews were conducted to assess the appropriateness of the intervention and the perceived benefits. Results: The program was demonstrated to be acceptable to youth and teachers, and its benefits included increasing students’ knowledge, skills and self-efficacy, discovering the territory, promoting environmental awareness, strengthening social relationships between peers and educators, and contributing to the promotion of individual and collective well-being. All the participants were satisfied with the program’s activities and recommend its continuation in the school context. Conclusions: Programs of this nature could foster environmental activism and enhance environmental sustainability at the local level, which reinforces the entrepreneurship profile of the youth.

2025-10-28T12:10:34Z

http://hdl.handle.net/10451/60218

Silva, Isabel S. Cunha-Saraiva, Filipa Ribeiro, Ana Sofia Bártolo, Ana

Cellular responses to 3D printed dental resins produced using consumer versus High-End printers

Objectives: The aim of this study was to evaluate the influence of different 3D dental printers and resins on human gingival fibroblasts behaviour. Materials and Methods: Three resins from NextDent (Denture 3D+, C&B MFH and Crowntec) were used to produce disc-shaped specimens on NextDent 5100 and Phrozen Sonic Mini 4K printers, using equivalent parameters in a total of 6 groups (N=20), with groups PD, PC and PT corresponding to Denture 3D+, C&B MFH and Crowntec printed on Phrozen printer, respectively and ND, NC and NT corresponding to Denture 3D+, C&B MFH and Crowntec printed on NexDent printer, respectively . Human gingival fibroblasts were cultured on specimens and biocompatibility evaluated at 1,3 and 7 days. IL-6 and IL-8 concentrations were evaluated at 3 days of culture using ELISA. Surface roughness was evaluated by a contact profilometer. SEM and fluorescence micrographs were analyzed at 1 and 7 days of growth. Statistical analyses were performed using SPSS 28.0 version and mean differences were tested using ANOVA and post-hoc Tukey tests (p< 0.05). Results: There was an increase in cellular growth after 7 days in culture in group PC and in group PT when compared to group PD (p=0,028 and p=0,203, respectively). ND group resulted in higher concentration of IL-6 when compared to PT group, and NC resulted in higher concentration of IL-8 when compared to ND, NT, PD and PT groups. No significant differences were found between groups regarding surface roughness. Conclusions: Within the limitations of the present study, NextDent 5100 and Phrozen Sonic Mini 4K performed similarly considering cell responses. The use of different 3D-printing resins influences in-vitro cellular behaviour of human fibroblasts. Surface roughness did not seem to be influenced using different printers or resins, if equivalent parameters are used.

2025-10-28T12:09:08Z

http://hdl.handle.net/10451/60219

Cardoso, Beatriz Sona

Novos tempos, novos ventos? A extrema-direita europeia e o Islão

Desde o início deste milénio que a investigação académica tem identificado o sentimento anti muçulmano como uma característica-chave da extrema-direita europeia. Este artigo discute a história e a validade do termo “islamofobia”, assim como a emergência e consolidação do tema da “Eurábia” na ideologia da extrema-direita. Analisa ainda a forma como as concepções de uma tomada de poder pelos muçulmanos na Europa têm contribuído para reconfigurar a ideologia da extrema-direita e para formar novas convergências entre diferentes margens do espaço político.

2025-10-28T12:26:07Z

http://hdl.handle.net/10451/6022

Zúquete, José Pedro

Falecimento da Professora Magalhães Collaço

No summary/description provided

2025-10-28T12:29:12Z

http://hdl.handle.net/10451/60220

Correia, Sérvulo, 1937-