Rui Bebiano, Rui Calçada, Dinar Camotim, Nuno Silvestre,
This paper presents the details and illustrates the application of a semi-analytical Generalised Beam Theory (GBT) formulation for the dynamic analysis of high-speed railway bridge decks. The technique, which takes into account the cross-section local/distortional and shear deformations, provides an original “doubly modal” representation of the dynamic response, which makes it possible to acquire deep insight into the mechanics of the deck structural behaviour. It is employed to investigate the dynamic ...
Tópico(s): Structural Health Monitoring Techniques
2017 - Elsevier BV | Thin-Walled Structures
... Universidade de Coimbra. Este projecto, coordenado pelo historiador Rui Bebiano...
Tópico(s): Historical and Political Studies
2007 - Associação de Actividades Científicas | Ler História
Rui Bebiano, Nuno Silvestre, Dinar Camotim,
The local-plate, distortional and global vibration behaviour of thin-walled steel channel members subjected to compression and/or non-uniform bending is studied. This investigation is carried out by means of a very recently developed Generalised Beam Theory (GBT) formulation, which takes into account the geometrically nonlinear stiffness reduction caused by the presence of (i) longitudinal stress gradients and (ii) the ensuing shear stresses. Taking advantage of the GBT modal features, one analyses ...
Tópico(s): Mechanical stress and fatigue analysis
2008 - Elsevier BV | Journal of Sound and Vibration
Dinar Camotim, Nuno Silvestre, Cilmar Basaglia, Rui Bebiano,
This paper reports on the use of a recently developed Generalised Beam Theory (GBT) formulation, and corresponding finite element implementation, to analyse the local and global buckling behaviour of thin-walled members with arbitrary loading and support conditions — this formulation takes into account longitudinal normal stress gradients and the ensuing pre-buckling shear stresses. After presenting an overview of the main concepts and procedures involved in the performance of a GBT-based (beam finite ...
Tópico(s): Composite Structure Analysis and Optimization
2008 - Elsevier BV | Thin-Walled Structures
Rui Bebiano, Nuno Silvestre, Dinar Camotim,
In this paper, one investigates the local-plate, distortional and global buckling behavior of thin-walled steel beams subjected to non-uniform bending moment diagrams, i.e. under the presence of longitudinal stress gradients. One begins by deriving a novel formulation based on Generalized Beam Theory (GBT), which (i) can handle beams with arbitrary open cross-sections and (ii) incorporates all the effects stemming from the presence of longitudinally varying stress distributions. This formulation is ...
Tópico(s): Structural Analysis and Optimization
2007 - World Scientific | International Journal of Structural Stability and Dynamics
Rodrigo Gonçalves, Rui Bebiano, Dinar Camotim,
This paper extends previous work concerning the determination of cross-section deformation modes in thin-walled members with arbitrary polygonal cross-section, in the framework of Generalized Beam Theory (Gonçalves et al., 2010 [1]). In particular, the paper addresses the so-called “natural shear deformation modes” (i.e. the deformation modes that involve non-null membrane shear strains and are independent of the cross-section discretization employed), which are relevant for capturing the behaviour ...
Tópico(s): Structural Behavior of Reinforced Concrete
2014 - Elsevier BV | Thin-Walled Structures
Rui Bebiano, Dinar Camotim, Nuno Silvestre,
This paper presents the main steps and procedures involved in the development of a Generalised Beam Theory (GBT) formulation to perform dynamic analyses of thin-walled members subjected to initial perturbations or acting loads. It combines (i) the GBT modal discretisation of the cross-section deformation with (ii) the commonly adopted vibration mode superposition approach – this combination leads to an original “doubly modal” representation of the displacement field, which (i) provides deep insight into ...
Tópico(s): Structural Load-Bearing Analysis
2013 - Elsevier BV | Thin-Walled Structures
Rui Bebiano, Rodrigo Gonçalves, Dinar Camotim,
When analysing the structural behaviour of a thin-walled member by means of Generalised Beam Theory (GBT) – a one-dimensional folded-plate theory expressing the member deformed configuration as a linear combination of cross-section deformation modes with amplitudes varying along its length – the performance of the so-called “cross-section analysis” is the key step. Indeed, it consists of determining the deformation modes and evaluating the corresponding modal mechanical properties. However, the available ...
Tópico(s): Composite Structure Analysis and Optimization
2015 - Elsevier BV | Thin-Walled Structures
Giovanni Garcea, Rodrigo Gonçalves, Antonio Bilotta, David Manta, Rui Bebiano, Leonardo Leonetti, Domenico Magisano, Dinar Camotim,
This paper compares two distinct approaches for obtaining the cross-section deformation modes of thin-walled members with deformable cross-section, namely the method of Generalized Eigenvectors (GE) and the Generalized Beam Theory (GBT). First, both approaches are reviewed, emphasizing their differences and similarities, as well as their resulting semi-analytical solutions. Then, the GE/GBT deformation modes for four selected cross-sections are calculated and examined in detail. Subsequently, attention ...
Tópico(s): Structural Load-Bearing Analysis
2016 - Elsevier BV | Thin-Walled Structures
Rui Bebiano, Dinar Camotim, Rodrigo Gonçalves,
This paper presents the fundamentals and illustrates the application and potential of the recent 2.0 release of the software GBTul – a computer program developed by the authors and made available as freeware on the website of the Department of Civil Engineering of the University of Lisbon. The program is based on Generalised Beam Theory (GBT), a bar theory accounting for cross-section in-plane and out-of-plane (warping) deformation, and performs linear buckling and undamped free vibration analyses of ...
Tópico(s): Structural Engineering and Materials Analysis
2017 - Elsevier BV | Thin-Walled Structures
Produção Nacional
Revisado por pares
Rui Bebiano, Cilmar Basaglia, Dinar Camotim, Rodrigo Gonçalves,
This paper deals with extending the domain of applicability of a recently developed Generalised Beam Theory (GBT) formulation intended to perform elastic linear buckling analyses of thin-walled members (i) exhibiting arbitrary flat-walled cross-sections (including those combining closed cells and open branches), and (ii) acted by general loadings. These loadings, which include transverse forces acting away from the member shear centre axis, are termed “general” in the sense that they may involve the ...
Tópico(s): Composite Structure Analysis and Optimization
2017 - Elsevier BV | Thin-Walled Structures
André Dias Martins, Nuno Silvestre, Rui Bebiano,
This paper presents a new modal theory for the wrinkling analysis of membranes and discusses the stretch-induced wrinkling behaviour of fixed-ended thin sheets. This modal theory corresponds to an extension of Generalised Beam Theory (GBT) to analyse the wrinkling behaviour of highly stretched sheets. The inherent GBT modal nature adopted in this investigation enables the acquisition of an in-depth knowledge (when compared with the traditional shell finite element analysis) of the behaviour underlying ...
Tópico(s): Vibration and Dynamic Analysis
2020 - Elsevier BV | International Journal of Mechanical Sciences
Steven H J Hageman, Lisa Pennells, Francisco Ojeda, Stephen Kaptoge, Kari Kuulasmaa, Tamar I. de Vries, Zhe Xu, Frank Kee, Ryan Chung, Angela Wood, John W. McEvoy, Giovanni Veronesi, Thomas Bolton, Stephan Achenbach, Krasimira Aleksandrova, Pilar Amiano, Donostia-San Sebastián, Philippe Amouyel, Jonas Andersson, Stephan J. L. Bakker, Rui Bebiano Da Providencia Costa, Joline W. J. Beulens, Michael J. Blaha, Martin Bobák, Jolanda M.A. Boer, Catalina Bonet, Fabrice Bonnet, Marie‐Christine Boutron‐Ruault, Tonje Braaten, Hermann Brenner, Fabian J. Brunner, Eric J. Brunner, Mattias Brunström, Julie E. Buring, Adam S. Butterworth, Naděžda Čapková, Giancarlo Cesana, Christina Chrysohoou, Sandra Colorado‐Yohar, Nancy R. Cook, Cyrus Cooper, Christina C. Dahm, Karina W. Davidson, Elaine Dennison, Augusto Di Castelnuovo, Chiara Donfrancesco, Marcus Dörr, Agnieszka Doryńska, Mats Eliasson, Gunnar Engström, Pietro Ferrari, Maurizio Ferrario, Ian Ford, Michael Fu, Ron T. Gansevoort, Simona Giampaoli, Richard F. Gillum, Agustı́n Gómez de la Cámara, Guıdo Grassı, Per‐Olof Hansson, Radu Huculeci, Kristian Hveem, Licia Iacoviello, M. Kamran Ikram, Torben Jørgensen, Bijoy Joseph, Pekka Jousilahti, J. Wouter Jukema, Rudolf Kaaks, Verena Katzke, Maryam Kavousi, Stefan Kiechl, Jens Klotsche, Wolfgang König, Richard A. Kronmal, Růžena Kubínová, Anna Kucharska‐Newton, Kristi Läll, Nils Lehmann, David M. Leistner, Allan Linneberg, David Lora, Thiess Lorenz, Wentian Lu, Dalia Lukšienė, Magnus Nakrem Lyngbakken, Christina Magnussen, Sofia Malyutina, Alejandro Marín Ibañez, Giovanna Masala, Ellisiv B. Mathiesen, Kuni Matsushita, Tom Meade, Olle Melander, Helmut E. Meyer, Karel G.M. Moons, Conchi Moreno‐Iribas, David C. Muller, Thomas Münzel, Y.P. Nikitin, Børge G. Nordestgaard, Torbjørn Omland, Charlotte Onland, Kim Overvad, Chris J. Packard, Andrzej Pająk, Luigi Palmieri, Demosthenes B. Panagiotakos, Salvatore Panico, Aurora Perez‐Cornago, Annette Peters, Arto Pietilä, Hynek Pikhart, Bruce M. Psaty, Fosca Quarti‐Trevano, J.R. García, Elio Ríboli, Paul M. Ridker, Beatriz L. Rodríguez, Miguel Rodríguez‐Barranco, Annika Rosengren, Ronan Roussel, Carlotta Sacerdote, Susana Sans, Naveed Sattar, Catarina Schiborn, Börge Schmidt, Ben Schöttker, Matthias B. Schulze, Joseph E. Schwartz, Randi Selmer, Steven Shea, Martin J. Shipley, Sabina Sieri, Stefan Söderberg, Reecha Sofat, Abdonas Tamosiunas, Barbara Thorand, Taavi Tillmann, Anne Tjønneland, Tammy Y. N. Tong, Antonia Trichopoulou, Rosario Tumino, Hugh Tunstall‐Pedoe, Anne Tybjærg‐Hansen, Ioanna Tzoulaki, Amber van der Heijden, Yvonne T. van der Schouw, W. M. Monique Verschuren, Henry Völzke, Christoph Waldeyer, Nicholas J. Wareham, Elisabete Weiderpass, Franz Weidinger, Philipp S. Wild, Johann Willeit, Peter Willeit, Tom Wilsgaard, Mark Woodward, Tanja Zeller, Dudan Zhang, Bin Zhou, Paul Dendale, Brian A. Ference, Martin Halle, Adam Timmis, Panos Vardas, John Danesh, Ian Graham, Veikko Salomaa, Frank L.J. Visseren, Dirk De Bacquer, Stefan Blankenberg, Jannick A N Dorresteijn, Emanuele Di Angelantonio,
Abstract Aims The aim of this study was to develop, validate, and illustrate an updated prediction model (SCORE2) to estimate 10-year fatal and non-fatal cardiovascular disease (CVD) risk in individuals without previous CVD or diabetes aged 40–69 years in Europe. Methods and results We derived risk prediction models using individual-participant data from 45 cohorts in 13 countries (677 684 individuals, 30 121 CVD events). We used sex-specific and competing risk-adjusted models, including age, smoking ...
Tópico(s): Lipoproteins and Cardiovascular Health
2021 - Oxford University Press | European Heart Journal
Rodrigo Gonçalves, Nuno Peres, Rui Bebiano, Dinar Camotim,
This paper presents the results of an investigation concerning the free vibration behavior (undamped natural frequencies and vibration mode shapes) of thin-walled beams with rectangular multi-cell cross-section (assemblies of parallel rectangular cells in a single direction). Besides local (plate-type) and global (flexural, torsional and extensional) vibration modes, attention is paid to the relatively less-known distortional vibration modes, which involve cross-section out-of-plane (warping) and in- ...
Tópico(s): Vibration and Dynamic Analysis
2015 - World Scientific | International Journal of Structural Stability and Dynamics
Produção Nacional
Vera Miranda‐Gonçalves, Sara Granja, Olga Martinho, Mrinalini Honavar, Marta Pojo, Bruno M. Costa, Manuel Melo Pires, Célia Pinheiro, Michelle Cordeiro, Gil Bebiano, Paulo Costa, Rui Manuel Reis, Fátima Baltazar,
Glioblastomas (GBM) present a high cellular heterogeneity with conspicuous necrotic regions associated with hypoxia, which is related to tumor aggressiveness. GBM tumors exhibit high glycolytic metabolism with increased lactate production that is extruded to the tumor microenvironment through monocarboxylate transporters (MCTs). While hypoxia-mediated regulation of MCT4 has been characterized, the role of MCT1 is still controversial. Thus, we aimed to understand the role of hypoxia in the regulation ...
Tópico(s): RNA modifications and cancer
2016 - Impact Journals LLC | Oncotarget
Tony Judt – historiador e intelectual público, de Rui Bebiano, vem ajudar a colmatar a falta de publicações nacionais sobre as ideias e os percursos dos intelectuais públicos na segunda metade do século XX. Note-se, no entanto, que Rui Bebiano é ele próprio historiador e, cada vez, mais ...
Tópico(s): Historical and Political Studies
2018 - Coimbra University Press | Revista Estudos do Século XX
... a publicacao da pequena – mas importante – compilacao Outubro, Rui Bebiano volta a publicar uma obra centrada nas representacoes ...
Tópico(s): Youth, Politics, and Society
2021 - Center for Social Studies, University of Coimbra | Revista crítica de ciências sociais/Revista crítica de ciências sociais
Tópico(s): Social and Economic Solidarity
2007 - Associação de Actividades Científicas | Ler História
A partir da constatação de uma perda sistemática de memória colectiva ocorrida nas movimentações estudantis, procura-se mostrar como essa amnésia tem relativizado sempre a sua força. Ao concentrar-se a observação no caso de Coimbra, procede-se a um breve inventário histórico de alguns dos momentos decisivos da intervenção reivindicativa dos seus estudantes, em articulação com o lugar político e simbólico da própria cidade. Mencionando também a afirmação gradual de uma subcultura estudantil dotada ...
Tópico(s): Educational Practices and Policies
2003 - Center for Social Studies, University of Coimbra | Revista crítica de ciências sociais/Revista crítica de ciências sociais
... de Letras da Universidade de Coimbra, orientada por Rui Bebiano, esta obra tem como objectivo caracterizar e compreender ...
Tópico(s): Asian Industrial and Economic Development
2010 - Associação de Actividades Científicas | Ler História
Rui Bebiano, Moshe Eisenberger, Dinar Camotim, Rodrigo Gonçalves,
Generalized Beam Theory (GBT), intended to analyze the structural behavior of prismatic thin-walled members and structural systems, expresses the member deformed configuration as a combination of cross-section deformation modes multiplied by the corresponding longitudinal amplitude functions. The determination of the latter, often the most computer-intensive step of the analysis, is almost always performed by means of GBT-based “conventional” 1D (beam) finite elements. This paper presents the formulation, ...
Tópico(s): Structural Health Monitoring Techniques
2017 - World Scientific | International Journal of Structural Stability and Dynamics
Produção Nacional
Revisado por pares
Vera Miranda‐Gonçalves, Mrinalini Honavar, Céline Pinheiro, Olga Martinho, Manuel Melo Pires, Célia Pinheiro, Michelle Cordeiro, Gil Bebiano, Paulo Costa, Isabel Palmeirim, Rui Manuel Reis, Fátima Baltazar,
Gliomas exhibit high glycolytic rates, and monocarboxylate transporters (MCTs) play a major role in the maintenance of the glycolytic metabolism through the proton-linked transmembrane transport of lactate. However, their role in gliomas is poorly studied. Thus, we aimed to characterize the expression of MCT1, MCT4, and their chaperone CD147 and to assess the therapeutic impact of MCT inhibition in gliomas.MCTs and CD147 expressions were characterized by immunohistochemistry in nonneoplastic brain ...
Tópico(s): Cancer, Hypoxia, and Metabolism
2012 - Oxford University Press | Neuro-Oncology
Rui Bebiano, Moshe Eisenberger, Dinar Camotim, Rodrigo Gonçalves,
Generalized Beam Theory (GBT), intended to analyze the structural behavior of prismatic thin-walled members and structural systems, expresses the member deformed configuration as a combination of cross-section deformation modes multiplied by the corresponding longitudinal amplitude functions. The determination of the latter, usually the most computer-intensive step of the analysis, is almost always performed by means of GBT-based conventional 1D (beam) finite elements. This paper presents the formulation, ...
Tópico(s): Structural Behavior of Reinforced Concrete
2017 - World Scientific | International Journal of Structural Stability and Dynamics
Tópico(s): Literature, Culture, and Criticism
1989 - University of Coimbra | Revista de História das Ideias
Tópico(s): Historical Education and Society
1993 - | Penélope (Lisboa
Tópico(s): Youth, Politics, and Society
2005 - University of Coimbra | Revista Portuguesa de História
Produção Nacional
Revisado por pares
Tópico(s): Urban Development and Societal Issues
2019 - Centro de Estudos Educação e Sociedade | Educação & Sociedade
... três textos específicos, da autoria de Fátima Bonifácio, Rui Bebiano e Luís Adão da Fonseca. Projetando conclusões, defende- ... Bonifácio parece pugnar pelo retorno da velha História, Rui Bebiano entende-a como poética, sem abdicar do rigor ...
Tópico(s): Historical Education and Society
2015 - Universidade Federal de Ouro Preto (UFOP); Universidade Federal do Estado do Rio de Janeiro (UNIRIO) | História da Historiografia International Journal of Theory and History of Historiography
Produção Nacional
Revisado por pares
definidas a propósito do lugar político
Tópico(s): Galician and Iberian cultural studies
2004 - University of Coimbra | Revista de História das Ideias
Tópico(s): Cultural, Media, and Literary Studies
2000 - University of Coimbra | Revista de História das Ideias