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Haute école de gestion de Genève

OAIS compliant digital archiving in DNA

Andriamahady, Dina ; Makhlouf Shabou, Basma (Dir.)

Mémoire de bachelor : Haute école de gestion de Genève, 2021 ; TDB 2462.

Time and space have been among the main concerns for archivists for a very long time. In other words, how to keep information accessible and understandable for the longest time and how to organize the ever-growing amount of data. Average storage media longevity is short from an archival point of view and similarly, technological progress leads to media obsolescence. Furthermore, media decay over...

Université de Fribourg

Visualization of the Thebesian veins during coronary angiography in a 57-year-old woman

Scoglio, Martin ; Cook, Stéphane

In: Oxford Medical Case Reports, 2020, vol. 2020, no. 7, p. omaa053

A 57-year-old woman was hospitalized due to a type 2 respiratory failure. Electrocardiogram at admission showed inverted T waves in leads V2–V4. Coronary angiogram was performed showing no relevant stenosis. However, this exam allowed visualization of the Thebesian veins outlining the left ventricle.

Université de Fribourg

The rise of angiosperms pushed conifers to decline during global cooling

Condamine, Fabien L. ; Silvestro, Daniele ; Koppelhus, Eva B. ; Antonelli, Alexandre

In: Proceedings of the National Academy of Sciences, 2020, vol. 117, no. 46, p. 28867–28875

Competition among species and entire clades can impact species diversification and extinction, which can shape macroevolutionary patterns. The fossil record shows successive biotic turnovers such that a dominant group is replaced by another. One striking example involves the decline of gymnosperms and the rapid diversification and ecological dominance of angiosperms in the Cretaceous. It is...

Université de Fribourg

Selective extinction against redundant species buffers functional diversity

Pimiento, Catalina ; Bacon, Christine D. ; Silvestro, Daniele ; Hendy, Austin ; Jaramillo, Carlos ; Zizka, Alexander ; Meyer, Xavier ; Antonelli, Alexandre

In: Proceedings of the Royal Society B: Biological Sciences, 2020, vol. 287, no. 2020-1931, p. 20201162

The extinction of species can destabilize ecological processes. A way to assess the ecological consequences of species loss is by examining changes in functional diversity. The preservation of functional diversity depends on the range of ecological roles performed by species, or functional richness, and the number of species per role, or functional redundancy. However, current knowledge is...

Université de Fribourg

Direct observations of a three million cubic meter rock-slope collapse with almost immediate initiation of ensuing debris flows

Walter, Fabian ; Amann, Florian ; Kos, Andrew ; Kenner, Robert ; Phillips, Marcia ; Preux, Antoine de ; Huss, Matthias ; Tognacca, Christian ; Clinton, John ; Diehl, Tobias ; Bonanomi, Yves

In: Geomorphology, 2020, vol. 351, p. 106933

Catastrophic collapse of large rock slopes ranks as one of the most hazardous natural phenomena in mountain landscapes. The cascade of events, from rock- slope failure, to rock avalanche and the near-immediate release of debris flows has not previously been described from direct observations. We report on the 2017, 3.0 × 106 m3 failure on Pizzo Cengalo in Switzerland, which led to human...