[Portrait de garçon en uniforme de collégien à mi-jambes, debout portant un brassard de communiant] : [photographie] / Pierre Eugène Fixon

Ancien possesseur : Gilles, Albert (1873-1959)

[Portrait de femme, à la robe à carreaux décolletée, à mi-corps, assise, de trois-quarts à gauche] : [photographie] / Pierre Ambroise Richebourg

Ancien possesseur : Gilles, Albert (1873-1959)

27-8-20, Circuit de la Sarthe, [Pierre] De Vizcaya sur Bugatti : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 60775

Mutations esthétiques, mais continuité technique dans l'oeuvre de Pierre Boulez

La version intégrale de cette thèse est disponible uniquement pour consultation individuelle à la bibliothèque de musique de l'Université de Montréal (http://www.bib.umontreal.ca/MU).

Lliçó inaugural: "Ensenyar a pensar històricament. El llegat de Pierre Vilar"

Rosa Congost recupera l'expressió 'pensar històricament' per començar la lliçó inaugural del curs 2003-2004, i que resumeix el pensament i les preocupacions no solament de l'historiador sinó també de l'ensenyant Pierre Vilar

Comunidades étnicas en Colombia: cultura y jurisprudencia

Este trabajo es el resultado del proyecto de investigación financiado por Colciencias y la Universidad del Rosario, que incorporó la Cátedra Viva Intercultural, constituyéndose así un escenario para el intercambio de saberes y constumbres propias de las comunidades étnicas de nuestro país. Un espacio en el que se reconocen afrocolombianos, indígenas, gitanos, y raizales, y se analiza su realidad social y la jurisprudencia que garantiza la efectividad de sus derechos. El presente texto contiene un estudio metodológico para consolidar el proceso de enseñanza de los saberes tradicionales de las comunidades étnicas en el aula universitaria. Es un documento guía para las futuras cátedras étnicas, dirigido a estudiantes, docentes y a entidades gubernamentales y ONG que trabajen por el respeto de la diversidad étnica de Colombia.El presente texto contiene un estudio metodológico para consolidar el proceso de enseñanza de los saberes tradicionales de las comunidades étnicas en el aula universitaria. Es un documento guía para las futuras cátedras étnicas, dirigido a estudiantes, docentes y a entidades gubernamentales y ONG que trabajen por el respeto de la diversidad étnica de Colombia.

Genetical and comparative genomics of Brassica under altered Ca supply identifies Arabidopsis Ca-transporter orthologs

Although Ca transport in plants is highly complex, the overexpression of vacuolar Ca2+ transporters in crops is a promising new technology to improve dietary Ca supplies through biofortification. Here, we sought to identify novel targets for increasing plant Ca accumulation using genetical and comparative genomics. Expression quantitative trait locus (eQTL) mapping to 1895 cis- and 8015 trans-loci were identified in shoots of an inbred mapping population of Brassica rapa (IMB211 × R500); 23 cis- and 948 trans-eQTLs responded specifically to altered Ca supply. eQTLs were screened for functional significance using a large database of shoot Ca concentration phenotypes of Arabidopsis thaliana. From 31 Arabidopsis gene identifiers tagged to robust shoot Ca concentration phenotypes, 21 mapped to 27 B. rapa eQTLs, including orthologs of the Ca2+ transporters At-CAX1 and At-ACA8. Two of three independent missense mutants of BraA.cax1a, isolated previously by targeting induced local lesions in genomes, have allele-specific shoot Ca concentration phenotypes compared with their segregating wild types. BraA.CAX1a is a promising target for altering the Ca composition of Brassica, consistent with prior knowledge from Arabidopsis. We conclude that multiple-environment eQTL analysis of complex crop genomes combined with comparative genomics is a powerful technique for novel gene identification/prioritization.

Synthesis of (Ca,Nd)TiO3 powders by complex polymerization, Rietveld refinement and optical properties

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Stable oxygen isotope record and Sr/Ca ratios of corals from IODP Holes M0009D and M0023A

We present monthly resolved records of strontium/calcium (Sr/Ca) and oxygen isotope (d18O) ratios from well-preserved fossil corals drilled during the Integrated Ocean Drilling Program (IODP) Expedition 310 'Tahiti Sea Level' and reconstruct sea surface conditions in the central tropical South Pacific Ocean during two time windows of the last deglaciation. The two Tahiti corals examined here are uranium/thorium (U/Th)-dated at 12.4 and 14.2 ka, which correspond to the Younger Dryas (YD) cold reversal and the Bølling-Allerød (B-A) warming of the Northern Hemisphere, respectively. The coral Sr/Ca records indicate that annual average sea surface temperature (SST) was 2.6-3.1 °C lower at 12.4 ka and 1.0-1.6 °C lower at 14.2 ka relative to the present, with no significant changes in the amplitude of the seasonal SST cycle. These cooler conditions were accompanied by seawater d18O (d18Osw) values higher by ~0.8 per mill and ~0.6 per mill relative to the present at 12.4 and 14.2 ka, respectively, implying more saline conditions in the surface waters. Along with previously published coral Sr/Ca records from the island [Cohen and Hart (2004), Deglacial sea surface temperatures of the western tropical Pacific: A new look at old coral. Paleoceanography 19, PA4031, doi:10.1029/2004PA001084], our new Tahiti coral records suggest that a shift toward lower SST by ~1.5 °C occurred from 13.1 to 12.4 ka, which was probably associated with a shift toward higher d18Osw by ~0.2 per mill. Along with a previously published coral Sr/Ca record from Vanuatu [Corrège et al. (2004), Interdecadal variation in the extent of South Pacific tropical waters during the Younger Dyras event. Nature 428, 927-929], the Tahiti coral records provide new evidence for a pronounced cooling of the western to central tropical South Pacific during the Northern Hemisphere YD event.

Monthly Tahiti coral Sr/Ca and oxygen isotope data from IODP Hole 310-M0024A

The early last glacial termination was characterized by intense North Atlantic cooling and weak overturning circulation. This interval between ~18,000 and 14,600 years ago, known as Heinrich Stadial 1, was accompanied by a disruption of global climate and has been suggested as a key factor for the termination. However, the response of interannual climate variability in the tropical Pacific (El Niño-Southern Oscillation) to Heinrich Stadial 1 is poorly understood. Here we use Sr/Ca in a fossil Tahiti coral to reconstruct tropical South Pacific sea surface temperature around 15,000 years ago at monthly resolution. Unlike today, interannual South Pacific sea surface temperature variability at typical El Niño-Southern Oscillation periods was pronounced at Tahiti. Our results indicate that the El Niño-Southern Oscillation was active during Heinrich Stadial 1, consistent with climate model simulations of enhanced El Niño-Southern Oscillation variability at that time. Furthermore, a greater El Niño-Southern Oscillation influence in the South Pacific during Heinrich Stadial 1 is suggested, resulting from a southward expansion or shift of El Niño-Southern Oscillation sea surface temperature anomalies.