Measurement of electrons from heavy-flavour hadron decays in p-Pb collisions at $\\sqrt{s_{NN}} = 5.02$ TeV using TPC and EMCal detectors with ALICE at LHC

Heavy-ion collisions are a powerful tool to study hot and dense QCD matter, the so-called Quark Gluon Plasma (QGP). Since heavy quarks (charm and beauty) are dominantly produced in the early stages of the collision, they experience the complete evolution of the system. Measurements of electrons from heavy-flavour hadron decay is one possible way to study the interaction of these particles with the QGP. With ALICE at LHC, electrons can be identified with high efficiency and purity. A strong suppression of heavy-flavour decay electrons has been observed at high $p_{m T}$ in Pb-Pb collisions at 2.76 TeV. Measurements in p-Pb collisions are crucial to understand cold nuclear matter effects on heavy-flavour production in heavy-ion collisions. The spectrum of electrons from the decays of hadrons containing charm and beauty was measured in p-Pb collisions at $\\sqrt = 5.02$ TeV. The heavy flavour decay electrons were measured by using the Time Projection Chamber (TPC) and the Electromagnetic Calorimeter (EMCal) detectors from ALICE in the transverse-momentum range $2 < p_ < 20$ GeV/c. The measurements were done in two different data set: minimum bias collisions and data using the EMCal trigger. The non-heavy flavour electron background was removed using an invariant mass method. The results are compatible with one ($R_ \\approx$ 1) and the cold nuclear matter effects in p-Pb collisions are small for the electrons from heavy-flavour hadron decays.

Pràctica 5: Coeducació

Coeducar significa «educar les persones al marge dels rols i els estereotips que ens imposa la societat, de manera que tinguen les mateixes oportunitats i no se’ls imposen diferències socioculturals (joguets, colors, formes de comportar-se, etc.) per ser home o dona». Per aquest motiu, coeducar no és educar a les mateixes aules els xiquets i les xiquetes, sinó propiciar un canvi en la cultura de l’escola infantil. Aquest canvi es basa a tenir cura de les relacions quotidianes a l’escola infantil, promovent una educació afectiva que afavorisca les relacions en igualtat i rebutge la violència, els prejudicis i els comportaments sexistes des d’edats primerenques i promoga la resolució pacífica de conflictes. Amb aquesta pràctica intentarem mostrar una experiència educativa que promoga la igualtat de gènere en l’alumnat d’educació infantil.

Cuba, 1835 (Image 5 of 6) (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Carta geogro. topográfica de la isla de Cuba : dedicanla a la Reyna Nuestra Señora Doñ a Isabel II, El Teniente General Conde de Cuba y la Comisión de Gefes y Oficiales Militares y de Agrimensores Públicos que la levantó y formó de su orden en los años de 1824 á 1831/Do. Estruch lo grabó en Barcelona 1835 ; Carlos Roca lo dibujó. It was published in 1835. Scale [ca. 1:325,000]. This layer is image 5 of 6 total images of the six sheet source map. Map in Spanish.The image inside the map neatline is georeferenced to the surface of the earth and fit to the World Mercator project coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as drainage, cities and other human settlements, roads, shoreline features, and more. Relief shown by hachures, depths by soundings. Includes also indexes, table of distances, statistical tables, and insets: "Plano de la ciudad y puerto de La Habana" [ca. 1:16.000]. -- "Plano de la ciudad y bahía de Sn. Carlos de Matanzas" [ca. 1:14.500]. -- "Ciudad de Sta. María del Puerto Principe" [ca. 1:16.000]. -- "Plano de la ciudad de Santiago de Cuba" [ca. 1:16.000] -- "Plano de la bahía de Cuba" [ca. 1:48.000]. -- "Plano de la ciudad de Trinidad" [ca. 1:16.000]. -- "Puerto de Casilda" [ca. 1:43.000].This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

(Table S1) Radiocarbon data of sediment core SO161/5 22SL

At the end of the Last Glacial Maximum (19,000 to 11,000 years ago), atmospheric carbon dioxide concentrations rose while the Delta14C of atmospheric carbon dioxide declined**1, 2. These changes have been attributed to an injection of carbon dioxide with low radiocarbon activity from an oceanic abyssal reservoir that was isolated from the atmosphere for several thousand years before deglaciation**3. The current understanding points to the Southern Ocean as the main area of exchange between these reservoirs4. Intermediate water formed in the Southern Ocean surrounding Antarctica would have then carried the old carbon dioxide signature to the lower-latitude oceans**5, 6. Here we reconstruct the Delta14C signature of Antarctic Intermediate Water off the coast of Chile for the past 20,000 years, using paired 14C ages of benthic and planktonic foraminifera. In contrast to the above scenario, we find that the delta14C signature of the Antarctic Intermediate Water closely matches the modelled surface ocean Delta14C, precluding the influence of an old carbon source. We suggest that if the abyssal ocean is indeed the source of the radiocarbon-depleted carbon dioxide, an alternative path for the mixing and propagation of its carbon dioxide may be required to explain the observed changes in atmospheric carbon dioxide concentration and radiocarbon activity.