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Université de Fribourg

Magnetic-field effects on one-dimensional Anderson localization of light

Schertel, Lukas ; Irtenkauf, Oliver ; Aegerter, Christof M. ; Maret, Georg ; Aubry, Geoffroy J.

In: Physical Review A, 2019, vol. 100, no. 4, p. 043818

Transport of coherent waves in multiple-scattering media may exhibit fundamental, nonintuitive phenomena such as halt of diffusion by disorder called Anderson localization. For electromagnetic waves, this phenomenon was observed only in one and two dimensions so far. However, none of these experiments studied the contribution of reciprocal paths nor their manipulation by external fields. In...

Université de Fribourg

Lizards and snakes from the late Miocene hominoid locality of Ravin de la Pluie (Axios Valley, Greece)

Georgalis, Georgios L. ; Rage, Jean-Claude ; Bonis, Louis de ; Koufos, George D.

In: Swiss Journal of Geosciences, 2018, vol. 111, no. 1–2, p. 169–181

We here describe lizards and snakes from the late Miocene (MN 10) of Ravin de la Pluie, near Thessaloniki, Greece, a locality widely known for its hominoid primate Ouranopithecus macedoniensis. The new finds comprise two large-sized lizards (a probable anguine and a varanid) and two snakes (an elapid and a small-sized “colubrine”). Even if the material is represented by few specimens,...

Bibliothèque cantonale jurassienne

Implications for the Late Pleistocene climate in Finland and adjacent areas from the isotopic composition of mammoth skeletal remains

Arppe, Laura, M. ; Karhu, Juha A.

In: Palaeogeography, palaeoclimatology, palaeoecology : an international journal for the geo-sciences, 2006, vol. 231, p. 322

Bibliothèque cantonale jurassienne

Incremental growth in vertebrate skeletal tissues : paleobiological and paleoenvironmental implications : introduction

MacFadden, Bruce J.

In: Palaeogeography, palaeoclimatology, palaeoecology : an international journal for the geo-sciences, 2004, vol. 206, p. 177

Université de Fribourg

A mathematical model for the steady activation of a skeletal muscle

Gabriel, Jean-Pierre ; Studer, L. M. ; Rüegg, Dieter G. ; Schnetzer, M.-A.

In: SIAM Journal on Applied Mathematics, 2008, vol. 68, no. 3, p. 869-889

A skeletal muscle is composed of motor units, each consisting of a motoneuron and the muscle fibers it innervates. The input to the motor units is formed of electrical signals coming from higher motor centers and propagated to the motoneurons along a network of nerve fibers. Because of its complexity, this network still escapes actual direct observations. The present model describes the steady...