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Université de Fribourg

4-Hydroxy-1-naphthaldehydes: proton transfer or deprotonation

Manolova, Y. ; Kurteva, Vanya B. ; Antonov, Liudmil M. ; Marciniak, H. ; Lochbrunner, S. ; Crochet, Aurélien ; Fromm, Katharina M. ; Kamounah, Fadhil S. ; Hansen, P. E.

In: Physical Chemistry Chemical Physics, 2015, vol. 17, no. 15, p. 10238–10249

A series of naphthaldehydes, including a Mannich base, have been investigated by UV-Vis spectroscopy, NMR and theoretical methods to explore their potential tautomerism. In the case of 4-hydroxy-1-naphthaldehyde concentration dependent deprotonation has been detected in methanol and acetonitrile. For 4-hydroxy-3-(piperidin-1-ylmethyl)-1-naphthaldehyde (a Mannich base) an intramolecular proton...

Université de Fribourg

Les "4 pièces brèves" de Frank Martin : analyse version solo de 1933 et version orchestrale de 1934 = The four "short pieces" from Frank Martin

Pelet, Jean-Michel ; Zoppelli, Luca (Dir.)

Mémoire de master : Université de Fribourg, 2007.

Frank Martin in his attitude to contemporary art make an important distinction between two types of knowledge: On one hand scientific knowledge or record to which science Modern is the extraordinary expansion of his conquests. This thought is reflected by a mathematically so complex that sometimes overcomes that by means of computers. On the other hand, thought that develops inwardness,...

Université de Fribourg

50 years of radiation protection and nuclear power in Switzerland : a brief history

Völkle, Hansruedi

In: Atoms For Peace: an International Journal, 2006, vol. 1, no. 2-3, p. 239-244

This article presents a short history of research in nuclear physics as well as of 50 years of nuclear power and radiation protection in Switzerland. After the International Conference 'Atoms for Peace' held in 1955 in Geneva the first research reactor was installed in Switzerland. A national environmental radioactivity monitoring programme was started in 1956. Today some 40% of the...

Université de Fribourg

§ 55 Beziehungen zum Ausland

Epiney, Astrid

In: Verfassungsrecht der Schweiz, 2001, p. 871-887

Université de Fribourg

68Ga-NODAGA-RGDyK for αvβ3 integrin PET imaging : Preclinical investigation and dosimetry

Buchegger, F. ; Viertl, D. ; Baechler, Sébastien ; Dunet, V. ; Kosinski, M. ; Poitry-Yamate, C. ; Rüegg, Curzio ; Prior, J. O.

In: Nuklearmedizin, 2011, vol. 50, no. 6, p. 221-246

Aim: To visualize neovasculature and/or tumour integrin αvβ3 we selected the binding moiety Arg-Gly-Asp-D-Tyr-Lys (RGDyK) coupled to NODAGA for labeling with 68Ga. Methods: NODAGA-RGDyK (ABX) was labeled with the 68Ga eluate from the 68Ge generator IGG100 using the processor unit PharmTracer. Biodistribution was measured in female Hsd mice sacrificed 10, 30, 60 and 90 min after i.v. injection...

Université de Fribourg

6S1/2-6P1/2 transition of Cs atoms in cubic and hexagonal solid ⁴He

Hofer, Adrian ; Moroshkin, Peter ; Ulzega, Simone ; Nettels, Daniel ; Müller-Siebert, Reinhard ; Weis, Antoine

In: Physical Review A, 2007, vol. 76, no. 2, p. 022502

We present a systematic experimental study of the absorption and fluorescence spectra of the 6S1/2-6P1/2 transition in Cs atoms isolated in solid ⁴He matrices. The bubble model developed earlier for alkali-metal atoms in liquid He is revised and applied to the present system. The analysis of the dependencies of absorption and fluorescence wavelengths on He...

Université de Fribourg

7-rhamnosylated flavonols modulate homeostasis of the plant hormone auxin and affect plant development

Kuhn, Benjamin M. ; Errafi, Sanae ; Bucher, Rahel ; Dobrev, Petre ; Geisler, Markus ; Bigler, Laurent ; Zažímalová, Eva ; Ringli, Christoph

In: Journal of Biological Chemistry, 2016, vol. 291, no. 10, p. 5385–5395

Flavonols are a group of secondary metabolites that affect diverse cellular processes. They are considered putative negative regulators of the transport of the phytohormone auxin, by which they influence auxin distribution and concomitantly take part in the control of plant organ development. Flavonols are accumulating in a large number of glycosidic forms. Whether these have distinct...

Université de Fribourg

§ 8. Freiheit des Warenverkehrs

Epiney, Astrid

In: Europäische Grundrechte und Grundfreiheiten, 2. Aufl., 2005, p. S. 227-256