21 documents found, page 1 of 3
Stereotactic body radiotherapy in primary lung disease: Experience of a portugu...
Travancinha, Catarina; Ferreira, Nelson; Barroso, Raquel; Esteves, Susana; Labareda, Miguel; Fonseca, João; Antunes, TelmaBackground: Stereotactic body radiation therapy (SBRT) is the primary alternative to surgery for patients with clinical stage I or II non -small cell lung cancer (NSCLC) who have significant comorbidity that precludes safe resection and for those who refuse surgery. Methods: Patients with clinical stage I or II NSCLC treated with SBRT in our institution between January 2015 and December 2019 were retrospectivel...
Revisiting the Role of Adjuvant Radiotherapy in Non-Small Cell Lung Cancer
Ferreira, Nelson.
A 3D-Printed Ceramics Innovative Firing Technique: A Numerical and Experimental...
Santos, Tiago; Ramani, Melinda; Devesa, Susana; Batista, Catarina; Franco, Margarida; Duarte, Isabel Catarina; Costa, Luís; Ferreira, NelsonAdditive manufacturing (AM), also known as three-dimensional (3D) printing, allows the fabrication of complex parts, which are impossible or very expensive to produce using traditional processes. That is the case for dinnerware and artworks (stoneware, porcelain and clay-based products). After the piece is formed, the greenware is fired at high temperatures so that these pieces gain its mechanical strength and ...
A 3D-Printed Ceramics Innovative Firing Technique: A Numerical and Experimental...
Santos, Tiago; Ramani, Melinda; Devesa, Susana; Batista, Catarina; Franco, Margarida; Duarte, Isabel; Costa, Luis; Ferreira, Nelson; Alves, NunoAdditive manufacturing (AM), also known as three-dimensional (3D) printing, allows the fabrication of complex parts, which are impossible or very expensive to produce using traditional processes. That is the case for dinnerware and artworks (stoneware, porcelain and clay-based products). After the piece is formed, the greenware is fired at high temperatures so that these pieces gain its mechanical strength and ...
Pervasive gaps in Amazonian ecological research
Carvalho, Raquel L.; Resende, Angelica F.; Barlow, Jos; França, Filipe M.; Moura, Mario R.; Maciel, Rafaella; Alves-Martins, Fernanda; Shutt, JackBiodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain underst...
Damage localization on CFRP composites by electrical impedance tomography
Rocha, Helena Cristina Lopes; Fernandes, Christophe; Ferreira, Nelson; Lafont, Ugo; Nunes, J. P.This work exploited the use of electrical impedance tomography (EIT) with one-step difference Gaussian-Newton (GN) algorithm to detect different types of damage on unidirectional carbon fibre/epoxy composite laminates. The major challenge concerning the implementation of EIT on composite materials has to do with their anisotropy. To assess this issue, this study was conducted on carbon fibre composites having d...
Electrical impedance tomography for damage detection and localization on carbon...
Rocha, Helena Cristina Lopes; Fernandes, Christophe; Ferreira, Nelson; Lafont, Ugo; Nunes, João P.Electrical impedance tomography (EIT) is being developed as promising non-intrusive technology for damage detection in conductive fibre reinforced polymers (FRP) composites. This work assessed EIT and one-step difference Gaussian-Newton algorithm to detect different damages in CFRP laminates, including through-thickness holes and impact damage of different severities. Two layup laminates were studied: quasi-iso...
O efeito do treino intensivo na maturação óssea e hormonal em ginastas feminina...
Ferreira, NelsonIntrodução: o treino intensivo, regular e precoce em ginastas poderá interferir no desenvolvimento das atletas. Objetivo: analisar o efeito do treino intensivo na maturação óssea e hormonal em ginastas femininas. Metodologia: Foi efetuada uma pesquisa computorizada nas bases de dados Pubmed, PEDro e Web of Science para encontrar estudos publicados com os efeitos do treino intensivo no desenvolvimento maturacion...
Additive manufactured stoneware fired in microwave furnace
Santos, Tiago; Ramani, Melinda; Devesa, Susana; Batista, Catarina; Franco, Margarida; Duarte, Isabel; Costa, Luís; Ferreira, Nelson; Alves, NunoAdditive manufacturing (AM) techniques have revolutionized the concept of building parts not only in laboratory contexts but also in industry environments and can be applied to distinct fields such as the health, automotive and aeronautics sectors [...]
Additive manufactured stoneware fired in microwave furnace
Santos, Tiago; Ramani, Melinda; Devesa, Susana; Batista, Catarina; Franco, Margarida; Duarte, Isabel; Costa, Luís; Ferreira, Nelson; Alves, NunoIn the context of ceramic manufacturing, additive manufacturing or 3D printing creates new opportunities and perspectives, allowing the fabrication of parts with complex shapes, which by traditional means would be impossible to produce or would be very expensive [1]. This is the case for dinnerware and artworks (stoneware, porcelain and clay-based products). After piece forming, the greenware is gas or electric...