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See detailAbility of nitrones of various structures to control the radical polymerization of styrene mediated by in situ formed nitroxides
Sciannamea, Valérie; Guerrero-Sanchez, Carlos; Schubert, Ulrich S. et al

in Polymer (2005), 46(23), 9632-9641

The ability of several nitrones to control the radical polymerization of styrene at 110 °C has been investigated by high-throughput experimentation. The nitrone/free radical initiator pair dictates the ... [more ▼]

The ability of several nitrones to control the radical polymerization of styrene at 110 °C has been investigated by high-throughput experimentation. The nitrone/free radical initiator pair dictates the structure of the nitroxide and the alkoxyamine formed in situ, which determines the position of the equilibrium between the active and the dormant species operating in the nitroxide-mediated polymerization. For the styrene polymerization to be controlled, the nitrone must be reacted with 2,2'-azo-bis-isobutyronitrile (AIBN) at 85 °C, prior to addition of styrene and polymerization at 110 °C. The effect of the nitrone structure on the kinetics of the styrene polymerization has been emphasized. Amongst all the nitrones tested, those of the C-phenyl-N-tert-butylnitrone (PBN) type are the most efficient in terms of polymerization rate, control of molecular weight and polydispersity. Electrophilic substitution of the phenyl group of PBN by either an electrodonor or an electroacceptor group has only a minor effect on the polymerization kinetics. Importantly, the polymerization rate is not governed by the thermal polymerization of styrene but by the alkoxyamine formed in situ during the pre-reaction step. The initiation efficiency is, however, very low, consistent with a limited conversion of the nitrone into nitroxide and alkoxyamine. [less ▲]

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See detailLa réserve d’office des intérêts civils par le juge pénal et la mise en état des causes ( le nouvel article 4 du titre préliminaire du Code de procédure pénale )
Michiels, Olivier ULg

in Journal des Tribunaux (2005), 6199

Le nouvel article 4 du titre préliminaire du Code de procédure pénale — tel que modifié par la loi du 13 avril 2005 — contient deux lignes de force. D’une part, il étend la réserve d’office des intérêts ... [more ▼]

Le nouvel article 4 du titre préliminaire du Code de procédure pénale — tel que modifié par la loi du 13 avril 2005 — contient deux lignes de force. D’une part, il étend la réserve d’office des intérêts civils par le juge répressif à toutes les affaires pénales et ce quel que soit le mode de saisine de la juridiction compétente. D’autre part, il organise une procédure de mise en état devant permettre aux parties intéressées d’obtenir un calendrier aux fins qu’il soit statué sur les intérêts civils. La contribution qui suit entend d’abord rappeler les modalités de l’exercice de l’action civile devant la juridiction pénale. Par la suite, elle s’attache à cerner les principes qui régissent la réserve d’office des intérêts civils et ses implications, tout particulièrement, sur les voies de recours et la prescription. Enfin, la dernière partie de l’article s’attache à examiner les divers problèmes engendrés par la mise en état des intérêts civils devant le juge pénal et les solutions susceptibles d’y être apportées. [less ▲]

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See detailDynamic Modelling, Simulation Analysis---Useful for Understanding Biology?
Bullinger, Eric ULg

Scientific conference (2005, November 11)

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See detailIntegrazione scolastica e immigrazione in Europa
Lucchini, Silvia ULg

Conference given outside the academic context (2005)

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See detailAnnular Groove Phase Mask Coronagraph
Mawet, D.; Riaud, Pierre ULg; Absil, Olivier ULg et al

in Astrophysical Journal (2005), 633

We present a new phase mask coronagraph consisting in an optical vortex induced by a space-variant surface relief subwavelength grating. Phase mask coronagraphy is a recent technique aiming at ... [more ▼]

We present a new phase mask coronagraph consisting in an optical vortex induced by a space-variant surface relief subwavelength grating. Phase mask coronagraphy is a recent technique aiming at accommodating both high dynamic and high angular resolution imaging of faint sources around bright objects such as exoplanets orbiting their parent stars or host galaxies of active galactic nuclei. Subwavelength gratings are known to be artificially birefringent. Their unique dispersive characteristics can be controlled through the grating geometry in order to synthesize achromatic phase shifters. We show that implementing them in a ring-shaped way produces a fully symmetric and achromatic coronagraph without any gap or ``dead zone.'' The practical manufacturing of the device is also discussed. [less ▲]

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See detailLa représentation médiatique des travailleurs migrants dans la presse de Shenzhen
Florence, Eric ULg

Scientific conference (2005, November 10)

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See detailBird and Environment
SETHI, Vinaya K.; Loneux, Michèle ULg; BHATT, Dinesh

in Current Science (2005), 89(9), 1461-1462

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See detailProjet Khartês. Méthode d’édition de chartes originales. Philosophie d’encodage
Mazziotta, Nicolas ULg

Scientific conference (2005, November 10)

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See detailCartographie de l’accessibilité par les alternatives à la voiture
Cornet, Yves ULg; Daxhelet, D.; Halleux, Jean-Marie ULg et al

Conference (2005, November 09)

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See detailL’eLearning, Cheval de Troyes de la qualité pédagogique
Poumay, Marianne ULg

Conference given outside the academic context (2005)

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See detailFigure della violenza nella tradizione arturiana in prosa
Morato, Nicola ULg

Scientific conference (2005, November 09)

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See detailGrande bourgeoisie et politique en Belgique. L’exemple de l’industrie des médias
Geuens, Geoffrey ULg

Conference given outside the academic context (2005)

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See detailSéance d'information sur les mémoires (Présentation Powerpoint)
Simons, Germain ULg; Delville, Michel ULg

Diverse speeche and writing (2005)

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See detailCultures de la qualité des services et cultures de l'accompagnement dans le secteur de l'éducation des jeunes enfants : essai de théorisation
Pirard, Florence ULg

Doctoral thesis (2005)

La thèse se présente comme un essai de théorisation des conceptions de la qualité des services et de leur accompagnement dans le secteur de l'éducation des jeunes enfants. Elle appréhende celles-ci sous ... [more ▼]

La thèse se présente comme un essai de théorisation des conceptions de la qualité des services et de leur accompagnement dans le secteur de l'éducation des jeunes enfants. Elle appréhende celles-ci sous le prisme de cultures, marquant le caractère construit de l'objet de recherche. Inspirée des méthodologies de la théorisation ancrée, elle propose deux approches complémentaires. La première interroge les usages de la notion de qualité dans les recherches sur l'éducation des jeunes enfants de manière à la fois diachronique et internationale ainsi que la référence à l'accompagnement dans les publications récentes parues en sciences de l'éducation et de la formation. La deuxième approche consiste à analyser les conceptions de la qualité des services et de leur accompagnement dans des débats menés dans des dispositifs de formation que l'auteure a elle-même mis en place. [less ▲]

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See detailHigh-Order, High-Frequency Methods for Wave Scattering I, II and III
Geuzaine, Christophe ULg

Scientific conference (2005, November 07)

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See detailVers une démarche structurée de gestion forestière intégrée et participative
Rondeux, Jacques ULg

Learning material (2005)

This paper is aiming at presenting the main guidelines of a structured approach to an integrated forest management. Such a type of management that can be defined as being a concerted multipurpose ... [more ▼]

This paper is aiming at presenting the main guidelines of a structured approach to an integrated forest management. Such a type of management that can be defined as being a concerted multipurpose management takes into account numerous objectives that forest should be able to fulfil as well as the opinions of the actors involved in the forestry world. This approach consists of an evaluation and a subsequent multicriteria comparison of possible management alternatives. These management options and the expected consequences of their application on the future forest in terms of structure, composition and ability to meet all the expectations must be analyzed. In this respect scenario modellings are built, using simulations that suppose a good and very large knowledge of species autecology, site quality, level of biological quality. Various criteria and indicators are then used to assess the capacity of each alternative to achieve each defined and concerted objective. This is the starting point for comparisons between the management alternatives, based on the multicriteria decision-making technique, the so called ELECTRE III. This promising method has been tested in the context of a belgian pilot forest covering nearly 800 hectares in which foresters, private and public forest owners, hunters, naturalists, walkers and some other stakeholders are deeply involved. [less ▲]

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See detailAssessing the effects of compositional heterogeneity on phylogenomic analyses
Baurain, Denis ULg; Beiko, Robert G.; Ragan, Mark A.

Conference (2005, November 04)

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See detailAn O(1) Solver for the Helmholtz Equation
Geuzaine, Christophe ULg

Scientific conference (2005, November 04)

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See detailFrançais de Belgique et travaux belges dans le TLF
Boutier, Marie-Guy ULg

Scientific conference (2005, November 04)

Detailed reference viewed: 31 (2 ULg)