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Pedicle screw fixation in spinal disorders: A European view

Boos, N. ; Webb, J.

In: European Spine Journal, 1997, vol. 6, no. 1, p. 2-18

Université de Fribourg

Osteology, fossil record and palaeodiversity of the European lizards

Villa, Andrea ; Tschopp, Emanuel ; Georgalis, Georgios L. ; Delfino, Massimo

In: Amphibia-Reptilia, 2017, vol. 38, no. 1, p. 79–88

he capability of palaeontologists to identify fossil remains of a particular group of vertebrates strongly depends on the knowledge they have of its comparative osteology and on the actual presence of diagnostic differences among the considered taxa. This could have a relevant influence on the study of palaeodiversity, since a low recognisability causes a loss of data when trying to...

Université de Fribourg

Numerical study of Anderson localization of terahertz waves in disordered waveguides

Lapointe, Clayton P. ; Zakharov, Pavel ; Enderli, F. ; Feurer, T. ; Skipetrov, S. E. ; Scheffold, Frank

In: EPL (Europhysics Letters), 2014, vol. 105, no. 3, p. 34002

We present a numerical study of electromagnetic wave transport in disordered quasi–one-dimensional waveguides at terahertz frequencies. Finite element method calculations of terahertz wave propagation within LiNbO3 waveguides with randomly arranged air-filled circular scatterers exhibit an onset of Anderson localization at experimentally accessible length scales. Results for the average...

Université de Fribourg

The power of AAA-ATPases on the road of pre-60S ribosome maturation — Molecular machines that strip pre-ribosomal particles

Kressler, Dieter ; Hurt, Ed ; Bergler, Helmut ; Baßler, Jochen

In: Biochimica et Biophysica Acta (BBA) - Molecular Cell Research, 2011, p. -

The biogenesis of ribosomes is a fundamental cellular process, which provides the molecular machines that synthesize all cellular proteins. The assembly of eukaryotic ribosomes is a highly complex multi-step process that requires more than 200 ribosome biogenesis factors, which mediate a broad spectrum of maturation reactions. The participation of many energy-consuming enzymes (e.g. AAA-type...

Université de Fribourg

Postnatal development of the hippocampal formation: A stereological study in macaque monkeys

Jabès, Adeline ; Banta Lavenex, Pamela A. ; Amaral, David G. ; Lavenex, Pierre

In: The Journal of Comparative Neurology, 2011, p. -

We performed a stereological analysis of neuron number, neuronal soma size, and volume of individual regions and layers of the macaque monkey hippocampal formation during early postnatal development. We found a protracted period of neuron addition in the dentate gyrus throughout the first postnatal year and a concomitant late maturation of the granule cell population and individual dentate...

Université de Fribourg

Perisynaptic Schwann cells of the vertebrate motor endplate bear modified cilia

Voigt, Tilman ; Dauber, Wolfgang ; Kohler, Ulrike

In: Microscopy Research and Technique, 2004, vol. 63(3), p. 149

Perisynaptic Schwann cells (PSCs), descendants of the myelinating Schwann cells, cover the axon terminal of the vertebrate motor endplate of the skeletal muscle fiber. PSCs are assumed to support the function of the axon terminal. This function suggests a net material transport in the direction of the axon terminal. Morphologically it is to be expected that these cells have a cytoskeleton aligned...