In: Journal of Neurotrauma, 2005, vol. 22(6), p. 703
The effects of a unilateral interruption of the dorsolateral funiculus at cervical level on the survival of neurons in the motor cortex were investigated in macaque monkeys. The lesion was made on the left side at the transition region between the 7th and 8th cervical segments, above the motoneurons controlling hand muscles. As a result, the homolateral hand became paretic,...
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Thèse de doctorat : Université de Fribourg, 2001 ; no 1334.
Many neurons and axons are eliminated during the development of the nervous system. These cells and their connections are thus overproduced, and the organism has to destroy the surplus in order to function correctly. A major mechanism responsible for this elimination appears to be competition between cells for a substance necessary for their survival. To examine this hypothesis, the present work...
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Thèse de doctorat : Université de Fribourg, 2004.
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Thèse de doctorat : Université de Fribourg, 2003.
This doctoral thesis deals with the question of how self-images change when people are getting into the age of retirement. Two main issues are addressed regarding the development of personal identities in that life stage: (1) The content of identity: the question if and how retired people have a different way of defining or characterizing themselves than employed people. (2) The age identity...
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Thèse de doctorat : Université de Fribourg, 2002 ; Nr. 1383.
The Siebenhengste region is one of the most significant cave areas in the world. Its high density of cave passages that extend over 1500 m in altitude makes it a key site for the study of Alpine paleogeomorphology and paleoclimatology. The present thesis concentrates on St. Beatus Cave and Bärenschacht at the southern rim of the cave region. The tectonics, hydrogeology, speleogenesis,...
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Thèse de doctorat : Université de Fribourg, 2001 ; no 1362.
Two different projects related to Atomic Physics are contained in the present Ph.D. thesis. The first project concerns the natural widths of atomic core levels whereas the second one deals with the double KL excitation of gaseous argon resulting from impact with monoenergetic photons. The first project itself is divided in two parts: the first one is an experimental study of the L1 to N5 atomic...
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Thèse de doctorat : Université de Fribourg, 2001 ; no 1345.
Oomycetes are pathogens responsible for many plant diseases over the world and the economical impact of their damage is quite important. Although these organisms show a mycelar growth, their biology is quite different from that of fungi. This makes them not easy to fight against and up to now no fungicide is able to stop an epidemy due to Oomycetes in a durable way. The particular biology of...
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Thèse de doctorat : Université de Fribourg, 2001 ; no 1332.
The first objective of this thesis is the calculation of excited state energies and properties of transition metal complexes using Density Functional Theory (DFT). To explore this wide topic, we did choose three different chemical systems. The first one, presented in the chapter 4, is about the photodissociation of the tris(2,2’- bipyridine)ruthenium(II) ([Ru(bpy)3]2+) ion. Over the last two...
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Thèse de doctorat : Université de Fribourg, 2003 ; no 1417.
Deep landslides (> 10 m) are generally characterized by phases of acceleration alternating with periods of lull, but most often lack real stabilization. Due to the continuous movement, it is difcult to evaluate the evolution of the activity. Therefore, a new methodology has been developed in order to precisely identify the sub-recent (20th century) and present evolution of deep landslide...
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Thèse de doctorat : Université de Fribourg, 2005.
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