Artigos de Revista
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
|
Comunicações
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
|
Livros
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
|
Capítulos de Livros
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
|
Teses de Doutoramento
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
|
Dissertações de Mestrado
Info
Impact of red flour beetle infestations in wheat flour and their effects on dough and bread physical, chemical, and color properties
The impact of Tribolium castaneum on the quality and technological suitability of bread-making wheat flour was evaluated. The aim of this study is to investigate whether insect-infested flours can be used, after pest removal, avoiding the common use of insecticides and flour waste. The tests were carried out with wheat flour infested red flour beetle with 500 adults/kg (N1), 1000 adults/kg (N2) and 2000 adults/kg (N3), for two weeks. Flour color, total starch, protein and water contents, mineral composition and flour acidity were studied. The technological properties of the respective doughs and of bread were characterized. The results showed that infested floursacidity was significantly higher (N1, N2 and N3 = 0.3 g H2SO4/100 g) than the control (0.1 g H2SO4/100 g), the total starch content decrease, from 78 g (control) to 70 g/100 g dm (N3), and protein content did not significantly change, 7 g/100 g (control) to 8 g/100 g (N2); flour infested showed darker greyish tone which colour differences
Ano: 2023
Número Páginas:
10p..
Autor(es): Sousa, I.; Graça, C.; Duarte, S.; Geirinhas, H.; Carvalho, M.
Revista: Journal of Stored Products Research
Editor: Elsevier Ltd.
Volume:
Volume 102, número 102095.
Keywords: Waste; Bread quality; Wheat flour; Red flour beetle
Info
Impact of Rejuvenator-Modified Mastic on Asphalt Mixture Stiffness: Meso-Scale Discrete Element Method Approach
Encapsulated rejuvenators embedded in asphalt mixtures are a promising technology toextend the service life of asphalt pavements. However, their effects on the asphalt mixture
Ano: 2023
Número Páginas:
22p..
Autor(es): Micaelo, R.; Azevedo, N.; Câmara, G.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: capsules; encapsulated rejuvenator; rejuvenator-modified mastic; asphalt mixture; self-healing; discrete element modeling
Info
Impacto da reabilitação na melhoria da resiliência de edifícios escolares públicos
A segurança das pessoas e o elevado valor dos bens construídos e dos seus conteúdos, bem como a sua criticidade na satisfação das necessidades básicas e bem-estar das comunidades, sempre suscitaram preocupações quanto à sustentabilidade, resiliência e fiabilidade do ambiente construído. A resiliência dos ativos construídos está frequentemente ligada à formulação de políticas e estratégias para o ambiente construído após eventos catastróficos ou traumáticos. É um conceito multidimensional que abrange aspetos físicos, infraestruturais,ambientais, económico-sociais, regulamentares e organizacionais. O presente artigo apresenta os resultados da aplicação de um sistema de classificação de resiliência assente numa abordagem holística, abrangente e sistemática, a diferentes tipos de edifícios, em qualquer fase do seu ciclo de vida. Em particular, analisa a resiliência de edifícios de escolas públicas portuguesas a diferentes riscos do ponto de vista da engenharia, nomeadamente no que diz respeito à segurança estrutural e de manutenção do edifício. Os edifícios escolares analisados, construídos ao longo do século XX, tiveram intervenções alargadas, entre 2009 e2011, no âmbito de um programa nacional de investimento público. Os edifícios foram analisados antes e após intervenções de reabilitação. Relativamente a indicadores económicos e a investimento potencial, nota-se que as intervenções de reabilitação apresentam impacto positivo na classificação da resiliência
Ano: 2023
Número Páginas:
69-80pp.
Autor(es): Almeida, N.; Salvado, A.; Falcão Silva, M. J.
Revista: RAE
Editor: Ponteditora
Volume:
Vol. 1, N.º 1.
Keywords: apoio à decisão; sistema de classificação; gestão de ativos; edifícios; Resiliência urbana
Info
Implementação e calibração de um modelo de decaimento de cloro em sistemas de distribuição de água para reutilização
Com secas cada vez mais frequentes e prolongadas em Portugal, é necessário repensar medidas que permitam enfrentar a falta de água. A água residual tratada constitui uma fonte de água alternativa, a ser utilizada como água para reutilização (ApR) em usos compatíveis, como rega de espaços verdes e lavagem de ruas.A modelação do decaimento de cloro em Sistemas de Distribuição de ApR (SDApR) carece de estudos que proponham metodologias de implementação dos modelos, técnicas de trabalho experimental a nível laboratorial e exemplos de aplicação à escala real. A modelação contribui para promover uma gestão eficaz da desinfeção da ApR, ajudando a determinar dosagens de desinfetante, concentrações residuais nas redes e locais de cloragem.Neste artigo apresenta-se uma metodologia para modelar o decaimento de cloro em ApR usando o software EPANET-MSX. A metodologia envolveu três fases: desenvolvimento do modelo hidráulico, modelação do decaimento de cloro na água e modelação do decaimento de cloro devido às paredes do reservatório e condutas. O modelo foi aplicado num SDApR da área de Lisboa e calibrado com ensaios à escala real, permitindo simular o decaimento de cloro em diferentes pontos do SDApR ao longo do tempo e prever as necessidades de doseamento de cloro
Ano: 2023
Número Páginas:
12p..
Autor(es): Viegas, R.M. C.; Rosa, M. J.; Figueiredo, D.; Ferreira, F.; Mesquita, E.; Costa, J.
Editor: APDA
Keywords: Epanet-MSX; Sistemas de distribuição de água para reutilização; Modelação do decaimento de cloro; Água para reutilização
Info
Implementation and Validation of SAFEPORT System at Sines Harbour
SAFEPORT safety system aims to daily reports to the Sines harbor administration, potential emergency situations regarding ships
Ano: 2023
Número Páginas:
215
Autor(es): Santos, J. A.; Fortes, C. J. E. M.; Gomes, A.; Pinheiro, L.
Revista: Defect and Diffusion Forum
Editor: Trans Tech Publications, Ltd.
Volume:
Vol. 427.
Keywords: Risk analysis; Moored ships; Wave propagation; SWAMS; SAFEPORT
Info
Implementation of the SWASH model into HIDRALERTA system
Early warning systems are an important tool for local authorities to detect emergency situations in advance and initiate the necessary safety measure. These systems often depend on numerical models to estimate wave overtopping in the affected areas. The SWASH model has shown to deliver good results in recent overtopping studies. The To-SEAlert project has the aim of increasing the efficiency, robustness and reliability of the HIDRALERTA early warning system. This study shows a first intent to implement the SWASH model to simulate wave overtopping for the Ericeira prototype. SWASH was implemented for one breakwater profile used to simulate the overtopping discharge and evaluate the associated risk levels. It was compared to the current approach used in HIDRALERTA, which resorts to a neural network trained with a physical modeling database, NN_OVERTOPPING2. Finally, both approaches were compared with previously analyzed video images of the breakwater. The results showed that SWASH generally overestimates overtopping and is not in good agreement with the video images. NN_OVERTOPPING2 has a better agreement with the video images. A possible reason for the overestimation might be the wave direction, which cannot be included in one-dimensional simulations in SWASH.
Ano: 2023
Número Páginas:
20-31pp..
Autor(es): Garzon, J.L.; Pinheiro, L.; Fortes, C. J. E. M.; Zózimo, A. C.; Manz, A.
Revista: Latin-American Journal of Computing
Editor: Zenodo
Volume:
Vol 10, nº 2.
Keywords: SWASH model; Risk reduction; Wave overtopping; Early warning system
Info
Importância da adaptabilidade na habitação para idosos
Em mais um artigo dedicado à reflexão sobre a habitação para as pessoas mais idosas numa perspetiva integrada e intergeracional, abordamos, especificamente, a importância de uma adequada caraterização residencial em termos de adaptabilidade passiva e ativa quando se visa uma habitação intergeracional especificamente amigável para idosos e fragilizados . Numa primeira parte do artigo faz-se uma introdução global à temática acima referida, passando-se, depois, para a abordagem do tema do interesse que tem o desenvolvimento de habitações, positivamente, à prova do futuro.Em seguida desenvolve-se a temática da adaptabilidade das habitações, realizada no sentido da facilitação da vivência dos idosos e conclui-se o artigo com uma reflexão sobre o assunto específico da opção por se viver em várias (e entre) habitações quando envelhecemos ou quando por isso optamos.
Ano: 2023
Número Páginas:
13p..
Autor(es): Baptista Coelho, A.
Revista: Infohabitar
Editor: Associação Portuguesa para a Promoção da Qualidade Habitacional - GHabitar APPQH
Volume:
Ano XIX, n.º 852.
Keywords: Intergeracionalidade; Habitação para idosos; Habitação intergeracional; Habitação
Info
Improving climate resilience of critical assets. The ICARIA project
The number of climate-related disasters has progressively increased in the last two decades and this trend will drastically exacerbate in the medium- and long-term horizons according to climate change projections. In this framework, through a multi-disciplinary team and a strong background acquired in recent projects, ICARIA aims to promote the use of asset-level modeling to achieve a better understanding of climate related tangible direct and indirect impacts on critical assets due to complex, cascading, and compound disasters. Furthermore, it takes into account the related risk reduction provided by suitable, sustainable, and cost-effective adaptation solutions. ICARIA focuses on both (i) critical assets and services that were not designed for potential climate change-related impacts that can increase the unplanned outages and failures, and (ii) on housing, natural areas, and population. Cutting edge methods regarding climate scenario building, asset-level-coupled models, and multirisk assessment approaches will be implemented and replicated in three EU regions to understand how future climate scenarios might affect critical assets and to provide decision-making support tools to private and public risk owners to assess the costs and benefits of various adaptation solutions.
Ano: 2023
Número Páginas:
14p..
Autor(es): Sfetsos, A.; Pacheco, D.; Bügelmayer-Blaschek, M.; Havlik, D; Brito, R.; Evans, B.; Leonne, M.; de la Cruz, A.; Russo, B.
Revista: Sustainability
Editor: MDPI
Volume:
Volume 15, Issue 19.
Keywords: Cascading effects; Compound events; Asset modeling; Climate resilience; Critical assets
Info
Improving mixing and renewal in drinking water storage tanks: lessons learnt and practical measures
This paper investigates the effect of different types of structural and operational measures on water mixing and renewal time in circular and rectangular cross-section water storage tanks, aiming at a better understanding of the flow dynamics to find practicable solutions to improve their design, rehabilitation and operation. An experimental programme, including traditional tracer and dye tracer tests, was carried out in small-scale tanks for different configurations and operating conditions. Two tanks were tested with and without interior structures, with the inlet/outlet pipes at different locations and for constant and variable water level. The main findings are that: i) the most effective measure is operating with fill-and-draw cycles, however, for tanks operated nearly full structural measures are recommendable; ii) reducing the inlet pipe diameter and installing nozzles near the tank bottom improve the mixing conditions; iii) the use of baffles is recommendable when the inlet and outlet pipes are very close.
Ano: 2023
Número Páginas:
13p..
Autor(es): Vaz, S.; Covas, D.; Almeida, M. C.; Monteiro, L.; Pinheiro, A.
Revista: Urban Water Journal
Editor: Taylor and Francis
Volume:
Volume 20, nº 7.
Keywords: Improvement measures; Short-circuiting; Water renewal; Water mixing; Water storage tanks
Info
Improving the pharmaceutical compounds control in two activated sludge wastewater treatment plants: key operating conditions and monitoring parameters
The control of pharmaceutical compounds (PhCs) in urban wastewater treatment plants (WWTPs) is an issue of health and environmental relevance, expected to become mandatory in the European Union and beyond, but studies at full scale are still scarce. A long-term (2.5-year) full-scale study addressing practical strategies for controlling PhCs was conducted in two activated sludge WWTPs with nitrification (BEI with A2O process; FNW with oxidation ditch). The results showed similar removal patterns in both plants
Ano: 2023
Número Páginas:
14p..
Autor(es): Coelho, R.; Rosa, M. J.; Ribeiro, R.; Mesquita, E.; Benoliel, M. J.; Cardoso, V.V.; Cardoso, E.; Lourinho, R,; Martins, A.; Sofia, S.; Rodrigues, J.A.; Almeida, C.M.M.; Silva, C.
Revista: Journal of Water Process Engineering
Editor: Elsevier
Volume:
54.
Keywords: Urban wastewater treatment; Treatment conditions; Pharmaceutical compounds; Biodegradation-sorption classes; Activated sludge treatment
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Relatórios
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
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Informações Científicas e Técnicas
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
|
Memórias
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
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Outros
Info
Dynamics of CO2, CH4, and N2O in Ria Formosa coastal lagoon (southwestern Iberia) and export to the Gulf of Cadiz
A first characterization of greenhouse gases had been carried out to study their role and impact in a productive transitional coastal system of the southern Portugal
Ano: 2024
Número Páginas:
17p..
Autor(es): Cravo, A.; Rodrigues, M.; Forja, J.; Ortega, T.; Correia, C.; Sierra, A.
Revista: Science of the Total Environment
Editor: Elsevier
Volume:
(906)167094.
Keywords: Coastal lagoon; Ria Formosa; Gas mass transport; Water - atmosphere fluxes; Greenhouse gases
Info
Global and local geometrical imperfections of pultruded GFRP profiles based on a modal approach
ABSTRACT - The ultimate capacity of pultruded glass fibre reinforced polymer (pGFRP) profiles depends significantly on geometrical imperfections (GIs), given their sensitivity to buckling phenomena arising from both thin walls and low elastic moduli. However, GIs are not yet comprehensively addressed in design guidance. This paper proposes a new approach to characterize the initial GIs of pGFRP profiles based on a modal approach. Given the lack of comprehensive knowledge in this area, this study presents a highly accurate and robust methodology to measure GIs and dimensional deviations (DDs) in pGFRP profiles using a 3D contact coordinate measurement machine (CMM). The modal approach encompasses the measurement of dimensional parameters and a point cloud transformation that enables the assessment of GIs associated with pure buckling modes of pGFRP profiles. This procedure allows the quantification of three types of global GIs associated to (i) minor-axis (weak axis), (ii) major-axis (strong axis) bending, and (iii) twist. Additionally, the procedure also includes the assessment of local GIs, considering the wall (plate-like) imperfections. The separation of GIs into these four types (shape and amplitude) is of major relevance as its paves the way to the development of analytical design formulas for the strength prediction of pGFRP members. The approach described in this paper also serves two important purposes: (i) the statistical analysis of DDs and GIs of pGFRP members, and (ii) the identification of distinct shapes and amplitudes of GIs that form the basis for reliable design considerations of pGFRP members.
Ano: 2024
Número Páginas:
18p..
Autor(es): Silvestre, N.; Correia, J.; Pinheiro, A.; Ribeiro, A.; Lages Martins, L.; Lazzari, J.
Revista: Construction and Building Materials
Editor: ELSEVIER
Volume:
412 (2024) 134813.
Keywords: Modal decomposition; Geometrical imperfections; Dimensional deviation; 3D contact measurements; Pultruded profiles; Glass fibre reinforced polymer (GFRP)
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Número Páginas:
26p..
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: Buildings
Editor: MDPI
Volume:
13.
Keywords: Compatibility; 20th century; Portland cement; Lime
Info
20th Century Mortars: Physical and Mechanical Properties from Awarded Buildings in Lisbon (Portugal)
This paper addresses the study of renders and plasters
Ano: 2023
Autor(es): Mirão, J.; Veiga, M. R.; Santos Silva, A.; Almeida, L.
Revista: buildings
Editor: MDPI
Volume:
13.
Keywords: compatibility; 20th century; Portland cement; lime
Info
2DH modelling and mapping of surfbeat-driven flooding in the shadow of a jettied tidal inlet
Near estuaries and harbours, submerged shoals and defence structures impact the exposure to overtopping. These features may be accounted for in two-dimensional horizontal (2DH) numerical models, either based on phase resolving or phase-average solvers for wave propagation. In between, surfbeat solvers, such as in XBeach, combine an affordable computational cost with the ability to generate and propagate the longer infragravity (IG) waves. However, surfzone wave characteristics and the overtopping exposure modelled with XBeach are sensi tive to settings such as the shape of the forcing wave spectra and the numerical scheme for wave propagation. The present paper explores this sensitivity and assesses the performance of different inundation models built with the 2DH surfbeat solver of XBeach. These models were forced with downscaled water levels and directional wave spectra and the results fuelled a discussion bounded by data collected downdrift of the entrance to the harbour of Figueira da Foz (Portugal). The original second-order upwind scheme, which propagates short-waves with a lower numerical diffusion improved the model performance in terms of long-wave height, and an unconventional breaking criterion better represented the cross-shore distribution of short-wave height near the shore. A cali brated model was validated through the hindcast of an overtopping event observed under moderate swell forcing, and was used to map the overtopping exposure during a hypothetical combination of an energetic swell with a water level having a return period of ~70 years. Compared to the default wave spectra shape and model settings, using an appropriate representation of the short-wave directional spectrum at the open boundary was necessary to reproduce the observed overtopping extent. Refining the cross-shore resolution of the model helped to better represent the observed inundation extents, as also did the reduction of the friction coefficient. Addi tional phase-resolving simulations in 1DH overestimated IG wave energy and produced higher and more frequent overtopping discharges. The differences with the calibrated 2DH surfbeat model increased with the proximity of the inlet and with short-wave height and angle of incidence. Overall, required calibration steps were provided. They aim at making 2DH XBeach surfbeat a credible tool for 1) predicting short and IG wave characteristics up to the shoreline, as well as for 2) providing first estimates of exposure to overtopping in areas with shallow and alongshore-irregular morphologies.
Ano: 2023
Número Páginas:
1-21pp.
Autor(es): Freire, P.; Baptista, P.; Silva, P. A.; Henriques, M.; Azevedo, A.; Oliveira , F.; Fortunato, A. B.; Nahon, A.
Revista: Coastal Engineering
Editor: Elsevier B.V.
Volume:
184.
Keywords: XBeach; Infragravity waves; Ebb-tidal delta; Intermediate beach; Overtopping
Info
A ciência é do povo? Citizen science, reflexões sobre o conceito e os processos científicos da produção da verdade num mundo cada vez mais inseguro
À medida que as ameaças ambientais se multiplicam à escala global exige-se uma mais apurada reflexividade sobre as práticas humanas, as formas de utilização dos territórios e seus recursos e a capacidade de previsão e resposta quanto a eventos ambientais extremos, socialmente disruptivos. Ora, é esta capacidade de previsão que a ciência experimenta em uma dimensão cada vez menos segura, entrando em crise os modelos causais e a pertinência do conhecimento empírico baseado em observações do passado, pois o futuro torna-se progressivamente mais incerto e ameaçador. Incerteza e ameaça que se antecipam em cada crise, sob a manifestação dos riscos ambientais [1]. Algumas destas manifestações tornam-se indetetáveis para os sentidos humanos, a não ser pela própria visibilidade das consequências. As comunidades humanas encontram-se, assim, cada vez mais dependentes da análise e do discurso da ciência para perceberem (mesmo que na impossibilidade de compreenderem com exatidão os mecanismos de exposição) os riscos a que estão expostas. A humanidade parece, pois, acossada numa estrutura medieval do medo, o medo do invisível, na emergência de um novo tipo de sociedade colonizada pelo medo e que dá lugar a todas as derivas políticas [2]....
Ano: 2023
Autor(es): Craveiro, J.
Revista: Plataforma Barómetro Social
Editor: Instituto de Sociologia da Universidade do Porto
Keywords: Citizen Science.; Participação; Riscos ambientais
Info
A comprehensive performance assessment system for diagnosis and decision-support to improve water and energy efficiency and its demonstration in Portuguese collective irrigation systems.
In regions with a strong seasonal or interannual asymmetry in the distribution of precipitation and higher frequency of droughts, collective irrigation systems are vital infrastructures for agricultural activity. Although operating for decades, several systems have ageing infrastructures, with relevant water losses and pumping energy inefficiencies. Consequently, the systems are not adequately designed or operated to meet current and future water demand. Therefore, rehabilitation to improve water and energy efficiency while ensuring infrastructure, economic sustainability and service quality is crucial. In this sense, comprehensive approaches using performance assessment to support the planning process or benchmarking between water users associations play an essential role in improving efficiency in collective irrigation systems.
Ano: 2023
Número Páginas:
15p..
Autor(es): Alegre, H.; Cordeiro, D.; Arranja, C.; Moreira, M.; Beceiro, P.; Loureiro, D.
Revista: Agricultural Water Management
Editor: Elsevier
Volume:
Vol- 275.
Keywords: Water Users Association; Water and energy efficiency; Performance assessment system; Decision support; Diagnosis; Collective irrigation systems
Info
A European and Brazilian cross-national investigation into the Portuguese translation of soundscape perceptual attributes within the SATP project
This paper presents a cross-national investigation into the soundscape perceptual attributes translation from English into European and Brazilian Portuguese. It is a study within the scope of a larger project
Ano: 2023
Autor(es): Ribeiro, L. C.; Alves, S.; Carvalho, M. L. U.; Michalski, R.; Antunes S.
Revista: Applied Acoustics
Editor: Elsevier
Volume:
Vol. 211.
Keywords: ISO/TS 12913-2:2018; Translation Cross-national; Soundscape attributes
Info
A RANS-based Numerical Model to Simulate Overtopping-type Wave Energy Converters Integrated into Breakwaters
This study aims to validate a numerical model based on Reynolds-averaged Navier
Ano: 2023
Número Páginas:
420
Autor(es): Teixeira, P.; Didier, E.
Revista: International Journal of Offshore and Polar Engineering
Editor: IJOPE
Volume:
Vol 33 Nº 4.
Keywords: Turbulence models; Numerical wave flume; RANS; Wave energy; Overtopping wave energy converter
Info
Aerodynamic characterization of the 516 Arouca Pedestrian suspension Bridge over the Paiva River
Given the 516 Arouca pedestrian suspension bridge
Ano: 2023
Número Páginas:
18 pp.
Autor(es): Marques da Silva, F.
Revista: Wind
Editor: MDPI
Volume:
3.
DOI:
10.3390/wind3010006
Keywords: wind tunnel; wind loading; suspended bridges
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