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Université de Fribourg

Characterization of the global network of optical magnetometers to search for exotic physics (GNOME)

Afach, S. ; Budker, D. ; Camp, G. De ; Dumont, V. ; Grujić, Zoran Dragan ; Guo, H. ; Jackson Kimball, D. F. ; Kornack, T. W. ; Lebedev, Victor ; Li, W. ; Masia-Roig, H. ; Nix, S. ; Padniuk, M. ; Palm, C. A. ; Pankow, C. ; Penaflor, A. ; Peng, X. ; Pustelny, Simon ; Scholtes, Theo ; Smiga, J. A. ; Stalnaker, J. E. ; Weis, Antoine ; Wickenbrock, A. ; Wurm, D.

In: Physics of the Dark Universe, 2018, vol. 22, p. 162–180

The Global Network of Optical Magnetometers to search for Exotic physics (GNOME) is a network of geographically separated, time-synchronized, optically pumped atomic magnetometers that is being used to search for correlated transient signals heralding exotic physics. The GNOME is sensitive to nuclear- and electron-spin couplings to exotic fields from astrophysical sources such as compact...

Université de Fribourg

Hook length of the bacterial flagellum is optimized for maximal stability of the flagellar bundle

Spöring, Imke ; Martinez, Vincent A. ; Hotz, Christian ; Schwarz-Linek, Jana ; Grady, Keara L. ; Nava-Sedeño, Josué M. ; Vissers, Teun ; Singer, Hanna M. ; Rohde, Manfred ; Bourquin, Carole ; Hatzikirou, Haralampos ; Poon, Wilson C. K. ; Dufour, Yann S. ; Erhardt, Marc

In: PLOS Biology, 2018, vol. 16, no. 9, p. e2006989

Most bacteria swim in liquid environments by rotating one or several flagella. The long external filament of the flagellum is connected to a membrane-embedded basal body by a flexible universal joint, the hook, which allows the transmission of motor torque to the filament. The length of the hook is controlled on a nanometer scale by a sophisticated molecular ruler mechanism. However, why its...

Université de Fribourg

Investigating post-stroke fatigue: An individual participant data meta-analysis

B.Cumming, Toby ; Yeo, Ai Beng ; Marquez, Jodie ; Churilov, Leonid ; Annoni, Jean-Marie ; Badaru, Umaru ; Ghotbi, Nastaran ; Harbison, Joe ; Kwakkel, Gert ; Lerdal, Anners ; Mills, Roger ; Naess, Halvor ; Nyland, Harald ; Schmid, Arlene ; Tang, Wai Kwong ; Tseng, Benjamin ; Port, Ingridvan de ; Mead, Gillian ; English, Coralie

In: Journal of Psychosomatic Research, 2018, vol. 113, p. 107–112

The prevalence of post-stroke fatigue differs widely across studies, and reasons for such divergence are unclear. We aimed to collate individual data on post-stroke fatigue from multiple studies to facilitate high-powered meta-analysis, thus increasing our understanding of this complex phenomenon.Methods: We conducted an Individual Participant Data (IPD) meta-analysis on post-stroke fatigue...

Université de Fribourg

An inversion supergene in Drosophila underpins latitudinal clines in survival traits

Durmaz, Esra ; Benson, Clare ; Kapun, Martin ; Schmidt, Paul ; Flatt, Thomas

In: Journal of Evolutionary Biology, 2018, vol. 31, no. 9, p. 1354–1364

Chromosomal inversions often contribute to local adaptation across latitudinal clines, but the underlying selective mechanisms remain poorly understood. We and others have previously shown that a clinal inversion polymorphism in Drosophila melanogaster, In(3R)Payne, underpins body size clines along the North American and Australian east coasts. Here, we ask whether this polymorphism also...

Consortium of Swiss Academic Libraries

X-ray spectroscopy of stars

Güdel, Manuel ; Nazé, Yaël

In: The Astronomy and Astrophysics Review, 2009, vol. 17, no. 3, p. 309-408

Consortium of Swiss Academic Libraries

Allan Sandage and the cosmic expansion

Tammann, G. ; Reindl, B.

In: Astrophysics and Space Science, 2012, vol. 341, no. 1, p. 3-14

Consortium of Swiss Academic Libraries

The expansion field: the value of H 0

Tammann, G. ; Sandage, A. ; Reindl, B.

In: The Astronomy and Astrophysics Review, 2008, vol. 15, no. 4, p. 289-331