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Université de Neuchâtel

Parallel computation of radio listening rates

Mazzariol, Marc ; Gennart, Benoit A. ; Hersch, Roger D. ; Gomez, Manuel ; Balsiger, Peter ; Pellandini, Fausto ; Leder, Markus ; Wuethrich, Daniel ; Feitknecht, Juerg

In: Parallel and Distributed Methods for Image Processing IV, 2000, vol. 4118, p. 146-153

Obtaining the listening rates of radio stations in function of time is an important instrument for determining the impact of publicity. Since many radio stations are financed by publicity, the exact determination of radio listening rates is vital to their existence and to further development. Existing methods of determining radio listening rates are based on face to face interviews or telephonic...

Haute école de gestion de Genève

The pricing of the knowledge-based services : insight from the environmental sciences : Cahier de recherche

Fragnière, Emmanuel ; Dubosson, Magali ; Debély, Joëlle

La plupart des modèles de pricing appliqués aux services sont consacrés aux prestations de services tels que vols en avion ou chambres d’hôtel. Ces techniques peuvent être utilisées à de telles prestations étant donné leur caractère standardisé. Comparés aux biens de production, les services sont caractérisés par les 4 dimensions IHIP. Ainsi, l’intangibilité et...

Haute école de gestion de Genève

Étude du comportement des PME/PMI suisses en matière d’adoption de système de gestion intégré : entre méconnaissance et satisfaction : Cahier de recherche

Equey Balzli, Catherine

Dans un environnement de mondialisation, de nombreux auteurs affirment que les outils de gestion intégrés (ERP) sont indispensables aux PME/PMI. Quelle est la situation des PME/PMI en Suisse en matière d’adoption d’ERP et comment se comportent-elles? Quel est le profil de la PME/PMI suisse qui utilise un ERP ? Notre recherche est basée sur une approche empirique. L’analyse statistique...

Université de Neuchâtel

Characterization of Ferredoxin:Thioredoxin Reductase Modified by Site-directed Mutagenesis

Glauser, Dominique A. ; Bourquin, Florence ; Manieri, Wanda ; Schürmann, Peter

In: The Journal of Biological Chemistry, 2004, vol. 277, no. 24, p. 16662-16669

Ferredoxin:thioredoxin reductase (FTR) is a key regulatory enzyme of oxygenic photosynthetic cells involved in the reductive regulation of important target enzymes. It catalyzes the two-electron reduction of the disulfide of thioredoxins with electrons from ferredoxin involving a 4Fe-4S cluster and an adjacent active-site disulfide. We replaced Cys-57, Cys-87, and His-86 in the active site of...

Université de Neuchâtel

La piété et la foi : la zebîba, marque de prière, et les signes d'engagement religieux masculins au Caire

Kreil, Aymon ; Ghasarian, Christian (Dir.)

Mémoire de diplôme universitaire : Université de Neuchâtel, 2006.

Zebîba désigne en Egypte une marque cutanée due aux frottements du tapis lors de la prière musulmane. Elle est visible sur le front de nombreux hommes, de tout âge, de toute profession et de toute appartenance politique confondues. La large diffusion du phénomène semble être plus spécifiquement rattachée au contexte égyptien. Chez les femmes elle est par contre rare. Il s’agit tout...

Université de Neuchâtel

The Presence of an Iron-Sulfur Cluster in Adenosine 5'-Phosphosulfate Reductase Separates Organisms Utilizing Adenosine 5'-Phosphosulfate and Phosphoadenosine 5'-Phosphosulfate for Sulfate Assimilation

Kopriva, Stanislav ; Büchert, Thomas ; Fritz, Günter ; Suter, Marianne ; Benda, Rüdiger ; Schünemann, Volker ; Koprivova, Anna ; Schürmann, Peter ; Trautwein, Alfred X. ; Kroneck, Peter M. H. ; Brunold, Christian

In: The Journal of Biological Chemistry, 2002, vol. 277, no. 24, p. 21786-21791

It was generally accepted that plants, algae, and phototrophic bacteria use adenosine 5'-phosphosulfate (APS) for assimilatory sulfate reduction, whereas bacteria and fungi use phosphoadenosine 5'-phosphosulfate (PAPS). The corresponding enzymes, APS and PAPS reductase, share 25-30% identical amino acids. Phylogenetic analysis of APS and PAPS reductase amino acid sequences from different...

Université de Neuchâtel

Plant Adenosine 5'-Phosphosulfate Reductase Is a Novel Iron-Sulfur Protein

Kopriva, Stanislav ; Büchert, Thomas ; Fritz, Günter ; Suter, Marianne ; Weber, Markus ; Benda, Rüdiger ; Schallerk, Johann ; Feller, Urs ; Schürmann, Peter ; Schünemann, Volker ; Trautwein, Alfred X. ; Kroneck, Peter M. H. ; Brunold, Christian

In: The Journal of Biological Chemistry, 2001, vol. 276, no. 46, p. 42881-42886

Adenosine 5'-phosphosulfate reductase (APR) catalyzes the two-electron reduction of adenosine 5'-phosphosulfate to sulfite and AMP, which represents the key step of sulfate assimilation in higher plants. Recombinant APRs from both Lemna minor and Arabidopsis thaliana were overexpressed in Escherichia coli and isolated as yellow-brown proteins. UV-visible spectra of these...

Université de Neuchâtel

Broadly tunable mid-infrared quantum cascade lasers for spectroscopic applications

Maulini, Richard ; Faist, Jérôme (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2006 ; 1895.

Quantum cascade lasers are unipolar semiconductor lasers based on intersubband transitions in heterostructures. These lasers, which have demonstrated continuous wave operation at room temperature in the mid-infrared spectral range, are well suited for the realization of compact, ultra-sensitive, trace-gas sensors based on absorption spectroscopy. Up to now, only distributed feedback (DFB)...

Université de Neuchâtel

Adenosine 5'-Phosphosulfate Sulfotransferase and Adenosine 5'-Phosphosulfate Reductase Are Identical Enzymes

Suter, Marianne ; von Ballmoos, Peter ; Kopriva, Stanislav ; Op den Camp, Roel ; Schaller, Johann ; Kuhlemeier, Cris ; Schürmann, Peter ; Brunold, Christian

In: The Journal of Biological Chemistry, 2000, vol. 275, no. 2, p. 930-936

Adenosine 5'-phosphosulfate (APS) sulfotransferase and APS reductase have been described as key enzymes of assimilatory sulfate reduction of plants catalyzing the reduction of APS to bound and free sulfite, respectively. APS sulfotransferase was purified to homogeneity from Lemna minor and compared with APS reductase previously obtained by functional complementation of a mutant strain of...

Université de Neuchâtel

Activation of the Potato Tuber ADP-glucose Pyrophosphorylase by Thioredoxin

Ballicora, Miguel A. ; Frueauf, Jeremiah B. ; Fu, Yingbin ; Schürmann, Peter ; Preiss, Jack

In: The Journal of Biological Chemistry, 2000, vol. 275, no. 2, p. 1315-1320

The potato tuber (Solanum tuberosum L.) ADP-glucose pyrophosphorylase (ADP-GlcPPase) catalyzes the first committed step in starch biosynthesis. The main type of regulation of this enzyme is allosteric, and its activity is controlled by the ratio of activator, 3-phosphoglycerate to inhibitor, Pi. It was reported (Fu, Y., Ballicora, M. A., Leykam, J. F., and Preiss, J. (1998)...