USURJ: University of Saskatchewan Undergraduate Research Journal
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« Aufklärer et vieilles perruques : Friedrich Nicolai vu par Heinrich Heine »
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De Rosa Parks au Black Power, une histoire populaire du mouvement noir, 1945-1970.
No full textInternational audienceSe fondant sur l'analyse de récits de militants et d'archives photographiques, l'étude met au jour les tensions qui ont traversé le mouvement noir dans les décennies d'après-guerre tout en retraçant une histoire des femmes et des hommes oubliés des mouvements noirs américains
Search for the decay mode of new high-mass resonances in collisions at TeV with the ATLAS detector
No full textInternational audienceThis letter presents a search for narrow, high-mass resonances in the final state with the boson decaying into a pair of electrons or muons. The TeV collision data were recorded by the ATLAS detector at the CERN Large Hadron Collider and have an integrated luminosity of 140 fb. The data are found to be in agreement with the Standard Model background expectation. Upper limits are set on the resonance production cross section times the decay branching ratio into . For spin-0 resonances produced via gluon-gluon fusion, the observed limits at 95% confidence level vary between 65.5 fb and 0.6 fb, while for spin-2 resonances produced via gluon-gluon fusion (or quark-antiquark initial states) limits vary between 77.4 (76.1) fb and 0.6 (0.5) fb for the mass range from 220 GeV to 3400 GeV
RENATU : un outil d’évaluation du potentiel écologique d’un site industriel ou urbain pour des utilisateurs non spécialisés
No full textInternational audienceThe biodiversity strategy of companies is part of their financial and social performance. Urban, Industrial and Linear Transport Infrastructures (UILTI) integrate green spaces. For these, managers are asking for tools to assess and monitor their biodiversity. RENATU is a potential biodiversity indicator. It is composed of several indices that concern ecosystem features. The more complex the environment, the greater the taxonomic diversity. The complexity of the ecological components, measured by the indices, is indicative of the potential for hosting plant and animal species (insects, arthropods, butterflies, birds, mammals, etc.). Atotal of 96 sites were used to test this indicator. The results demonstrate the homogeneity of the ecological indices. An evaluation by means of a user questionnaire was used to confirm its relevance as a potential biodiversity management tool. Such an indicator is part of the corporate social responsibility strategy. It enhances both financial and social performanceLa stratégie de biodiversité des entreprises fait partie de leur performance financière et sociale. Les infrastructures de transport urbaines, industrielles et linéaires (ITUIL) intègrent des espaces verts. Pour ceux- ci, les gestionnaires sont demandeurs d'outils d'évaluation et de suivi de leur biodiversité. RENATU est un indicateur de biodiversité potentielle. Il est composé de plusieurs indices qui concernent les caractéristiques des écosystèmes. Plus l'environnement est complexe, plus la diversité taxonomique est importante. La complexité des composantes écologiques, mesurée par les indices, est révélatrice du potentiel d'accueil des espèces végétales et animales (insectes, arthropodes, papillons, oiseaux, mammifères etc.). Au total, 96 sites ont été utilisés pour tester cet indicateur. Les résultats démontrent l'homogénéité des indices écologiques. Une évaluation par le biais d'un questionnaire adressé aux utilisateurs a permis de confirmer sa pertinence en tant qu'outil potentiel de gestion de la biodiversité. Un tel indicateur s'inscrit dans la stratégie de responsabilité sociale des entreprises. Il permet d'améliorer les performances financières et sociales
L'administration de l'huile à Ougarit et dans le monde mycénien: aspects des procédures palatiales
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Historical monuments and lead pollution: Lessons from the case of Notre-Dame de Paris and Sainte-Chapelle
No full textInternational audienceTo investigate the potential spreading of leaded dust over Paris and its inhabitants, following the fire of Notre-Dame de Paris cathedral in April 2019, we developed a dedicated protocol to identify the geochemical fingerprint of the emitted particles. This method could be transposed to a contemporary monument to Notre-Dame de Paris which had not burnt and which had to undergo a major restoration phase: Sainte-Chapelle de Paris. Thus, a new study was performed on the indoor dust collected in this monument, to which the protocol developed for the dusts of Notre-Dame was applied. The comparison of the geochemical fingerprint of both monuments highlights the complexity of establishing the chemical signatures of such buildings. The homogeneity of the isotopic and elemental results obtained on the samples from Notre-Dame de Paris compared to those from Sainte-Chapelle de Paris reveals the homogenizing role of the fire, which simplifies the geochemical signature determination. Moreover, this study does not show any significant impact of anthropogenic pollution (road traffic, industry, incinerators) on the indoor environment of monuments, which are nevertheless rich in construction lead. The notion of “polluter-polluted monument" could be problematic in the event of an accident during restoration phase. These new results obtained on dust samples from a building that has not experienced any recent major deterioration underlines the multiple sources of lead present in these monuments and the importance of identifying univocally their signature. However, the concentrations of metal and metalloid in the indoor dust do not show any major pollution inside Sainte-Chapelle de Paris that could be a threat to human health
