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  • The contribution of Angola to the early spread of the HIV-1 epidemic
    Publication . Pineda-Peña, Andrea-Clemencia; Varanda, Jorge; Theys, Kristof; Bártolo, Inês; Leitner, Thomas; Taveira, Nuno; Vandamme, Anne-Mieke; Abecasis, Ana B.
    "Understanding how, when and why the HIV-1 virus adapted to the human population and become pandemic is crucial to prevent its propagation and the establishment of other potential future viral pandemics. It is known that the HIV-1 group M epidemic started in Kinshasa, Democratic Republic of Congo (DRC), and soon spread across the Congo river to Brazzaville located in Republic of Congo (RC), and further to Lubumbashi and Mbuji-Mayi (DRC), around 1930s (~1937 [95% Bayesian Credible Interval: 1919-1957]). Angola borders and has long-term links with DRC and RC as well as high levels of HIV-1 genetic diversity 2. Therefore, we aimed to investigate the role of this country in the initial spread of the HIV-1 pandemic."
    2015-05-13Conference object Open access Show more
  • Espaço público municipal: do projeto à obra – o caso de estudo do Município de Estremoz
    Publication . Nunes, Susana Isabel Corda; Loures, Luís Carlos; Serrano, António José Ganhão
    O presente trabalho consiste na avaliação de projetos de espaços públicos urbanos, implementados no concelho de Estremoz. A primeira fase deste trabalho consiste numa revisão literária, onde se procura definir o conceito de cidade, espaço público, parques e jardins e de estudo de caso, uma vez que o trabalho consiste na avaliação de projetos, implementados em Estremoz, de projetos que pela sua dimensão, importância histórica, ou localização alteraram de modo significativo o dia-a-dia da população e os seus hábitos culturais. O objetivo geral deste trabalho é, no caso específico do Concelho de Estremoz, analisar se os projetos foram executados de acordo com as peças técnicas propostas nas diferentes fases. Caso os projetos não tenham sido feitos de acordo com as peças técnicas, tentar compreender quais foram os motivos e quais foram os fatores que influenciaram esta tomada de decisão. Este fatores podem ser fatores económicos, sociais, estéticos e/ou ambientais, entre outros.
    2015-05-13Master thesis Open access Show more
  • Observation of the rare $B^0_s\to\mu^+\mu^-$ decay from the combined analysis of CMS and LHCb data
    Publication . CMS, LHCb collaboration (2830 authors); Hollar, Jonathan; Nayak, Aruna; Bargassa, Pedrame; Beirão Da Cruz E Silva, Cristóvão; Faccioli, Pietro; Ferreira Parracho, Pedro Guilherme; Gallinaro, Michele; Lloret Iglesias, Lara; Nguyen, Federico; Rodrigues Antunes, Joao; Seixas, Joao; Varela, Joao; Vischia, Pietro; David Tinoco Mendes, Andre; Silva, Pedro; Musella, Pasquale; Pela, Joao; Leonardo, Nuno
    A joint measurement is presented of the branching fractions $B^0_s\to\mu^+\mu^-$ and $B^0\to\mu^+\mu^-$ in proton-proton collisions at the LHC by the CMS and LHCb experiments. The data samples were collected in 2011 at a centre-of-mass energy of 7 TeV, and in 2012 at 8 TeV. The combined analysis produces the first observation of the $B^0_s\to\mu^+\mu^-$ decay, with a statistical significance exceeding six standard deviations, and the best measurement of its branching fraction so far. Furthermore, evidence for the $B^0\to\mu^+\mu^-$ decay is obtained with a statistical significance of three standard deviations. The branching fraction measurements are statistically compatible with SM predictions and impose stringent constraints on several theories beyond the SM.
    2015-05-13Journal article Open access Show more