Browsing by Issue Date, starting with "2018-08-22"
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- A novel splicing mutation in the ALB gene causing analbuminaemia in a Portuguese womanPublication . Caridi, Gianluca; de Abreu, Ilidio B R; Alves, José A; Lugani, Francesca; Campagnoli, Monica; Galliano, Monica; Minchiotti, Lorenzo
- Prática de mindfulness na educação pré-escolarPublication . Nunes, Sara; Nogueira, ClementinaO presente relatório tem como tema a prática de mindfulness em contexto de Jardim-de-Infância. Corresponde a uma investigação qualitativa, que pretende articular os fundamentos teóricos da investigação em educação com as experiências observadas e vividas no contexto de jardim-de-infância, no âmbito da Prática de Ensino Supervisionada do Mestrado de Educação Pré-Escolar. Tratando-se de uma metodologia de investigação-ação e de acordo com o paradigma de interpretativo, este estudo visa compreender as condições necessárias para a implementação de um Programa Mindfulness com crianças em idade pré-escolar. De acordo com os procedimentos de investigação escolhidos e os resultados das situações vividas e observadas e por mim empiricamente analisados, será descrita e apresentada a implementação de um programa mindfulness as condições necessárias para a prática de mindfulness no jardim-de-infância e tecido o perfil do educador mindfulness. No final serão apresentadas as considerações relativamente à investigação e ao projeto implementado. Serão apresentadas as dificuldades e limitações da investigação, bem como o possível contributo para a construção de uma nova conceção de Educação e, consequentemente, de Educadores.
- A Simultaneous Description of Hadron and Jet Suppression in Heavy Ion CollisionsPublication . Jorge Casalderrey-Solana; Zachary Hulcher; Guilherme Milhano; Daniel Pablos; Krishna RajagopalWe present a global fit to all data on the suppression of high energy jets and high energy hadrons in the most central heavy ion collisions at the LHC for two different collision energies, within a hybrid strong/weak coupling quenching model. Even though the measured suppression factors for hadrons and jets differ significantly from one another and appear to asymptote to different values in the high energy limit, we obtain a simultaneous description of all these data after constraining the value of a single model parameter. We use our model to investigate the origin of the difference between the observed suppression of jets and hadrons and relate it, quantitatively, to the observed modification of the jet fragmentation function in jets that have been modified by passage through the medium produced in heavy ion collisions. In particular, the observed increase in the fraction of hard fragments in medium-modified jets, which indicates that jets with the fewest hardest fragments lose the least energy, corresponds quantitatively to the observed difference between the suppression of hadrons and jets. We argue that a harder fragmentation pattern for jets with a given energy after quenching is a generic feature of any mechanism for the interaction between jets and the medium that they traverse that yields a larger suppression for wider jets. We also compare the results of our global fit to LHC data to measurements of the suppression of high energy hadrons in RHIC collisions, and find that with its parameter chosen to fit the LHC data our model is inconsistent with the RHIC data at the $3\sigma$ level, suggesting that hard probes interact more strongly with the less hot quark-gluon plasma produced at RHIC.
- Search for low-mass dijet resonances using trigger-level jets with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeVPublication . ATLAS collaboration (2892 authors); Aguilar Saavedra, Juan Antonio; Amor Dos Santos, Susana Patricia; Araque Espinosa, Juan Pedro; Castro, Nuno Filipe; Conde Muino, Patricia; Da Cunha Sargedas De Sousa, Mario Jose; Dias do vale, Tiago; Faisca Rodrigues Pereira, Rui Miguel; Fiolhais, Miguel; Galhardo, Bruno; Gomes, Agostinho; Goncalo, Ricardo; Jorge, Pedro; Machado Miguens, Joana; Maio, Amelia; Maneira, Jose; Oleiro Seabra, Luis Filipe; Onofre, Antonio; Costa Batalha Pedro, Rute; Pereira Peixoto, Ana Paula; Santos, Helena; Saraiva, Joao; Silva, Jose Manuel; Tavares Delgado, Ademar; Veloso, Filipe; Wolters, HelmutSearches for dijet resonances with sub-TeV masses using the ATLAS detector at the Large Hadron Collider can be statistically limited by the bandwidth available to inclusive single-jet triggers, whose data-collection rates at low transverse momentum are much lower than the rate from standard model multijet production. This Letter describes a new search for dijet resonances where this limitation is overcome by recording only the event information calculated by the jet trigger algorithms, thereby allowing much higher event rates with reduced storage needs. The search targets low-mass dijet resonances in the range 450–1800 GeV. The analyzed data set has an integrated luminosity of up to 29.3 fb-1 and was recorded at a center-of-mass energy of 13 TeV. No excesses are found; limits are set on Gaussian-shaped contributions to the dijet mass distribution from new particles and on a model of dark-matter particles with axial-vector couplings to quarks.