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See detailViscoelastic properties of telechelic ionomers. I. Complexed α,ω-diamino polydienes
Charlier, Pascal; Jérôme, Robert ULiege; Teyssié, Philippe et al

in Macromolecules (1990), 23(13), 3313-3321

Complexation of the end groups of amino telechelic polydienes strongly affects the viscoelastic behavior. This is shown in the thermal dependence of the isochronous torsion modulus of a liquid ... [more ▼]

Complexation of the end groups of amino telechelic polydienes strongly affects the viscoelastic behavior. This is shown in the thermal dependence of the isochronous torsion modulus of a liquid polybutadiene selectively end-capped by a piperazine unit at both extremities. A rubbery plateau emerges when the telechelic polymer is coordinated to copper(I1) or iron(II1) chlorides. The rubbery plateau extends over a temperature range that depends on the molar ratio of the transition metal to the amine end group. Similar observations have been reported when the dynamic mechanical properties of an a,w-bis(dimethylamino) telechelic polyisoprene have been investigated over the full range of temperature from the glassy plateau to the viscous flow. Upon complexation of the end groups, a rubberlike plateau is observed, which does not exist for the uncomplexed polymer. Furthermore, a secondary relaxation, attributed to the aggregation of the complexed amine end groups, occurs above Tg. The temperature at which the maximum of this relaxation is observed and the distribution of the relaxation times depend on the metal to amine endgroup molar ratio. At a ratio of 1, FeC13 endows the chain network with higher cross-link density than CuC12 does. However, at the same time the temperature width of the rubbery plateau is much shorter for the former than for the latter polymer, indicating a relative thermal instability of the Fe-amine complexes. [less ▲]

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See detailA viscoelastic-viscoplastic-damage constitutive model based on a large strain hyperelastic formulation for amorphous glassy polymers
Nguyen, Van Dung ULiege; Morelle, Xavier; Lani, Frédéric et al

in proceedings of the 20th International Conference on Composite Materials, Copenhagen, Denmark, 19-24th July 2015 (2015, July 20)

The aim of this work is to develop an efficient large-strain hyperelastic constitutive model for amorphous polymers in the glassy state. These materials exhibit a complex rate- and pressure-sensible ... [more ▼]

The aim of this work is to develop an efficient large-strain hyperelastic constitutive model for amorphous polymers in the glassy state. These materials exhibit a complex rate- and pressure-sensible behavior in both elastic and plastic regimes. After an initial linear elastic region, a nonlinear stage continues until reaching a peak stress, which is followed by a softening stage. At large strains, when the softening is saturated, a re-hardening stage is reached. The viscoelastic effect is captured using the generalized Maxwell model. The viscoplastic effect is considered using a Perzyna-type flow rule incorporating a pressure sensitive yield surface and a non-associated flow potential. This yield surface is extended from the Drucker-Prager one. The saturated softening phenomenon is modelled using an isotropic numerical damage variable progressed by a saturated softening law. With the introduction of the damage parameter, a non-local implicit gradient damage model is used to avoid the loss of the solution uniqueness. Through experimental comparisons, it is shown that the proposed model has the ability to model the complex mechanical responses of amorphous glassy polymers. [less ▲]

Detailed reference viewed: 129 (22 ULiège)
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See detailViscosity-dependent isomerization and fluorescence yields of merocyanine 540
Hoebeke, Maryse ULiege; Piette, J.; Van de Vorst, A.

in Journal of Photochemistry and Photobiology B: Biology (1990), 52

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See detailViscosity-dependent isomerization and fluorescence yields of merocyanine 540
Hoebeke, Maryse ULiege; Piette, J.; van de Vorst, A.

Conference (1988)

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See detailVisé - Sint-Martens Voeren n°34/7-8.Carte géologique de Wallonie à l'échelle du 1/25.000. Notice explicative.
Barchy, Laurent; Marion, Jean-Marc ULiege

Book published by SPW/Editions, Cartes - Révision et 2ème édition (2017)

Leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions in 1896 (at 1/40.000, by ... [more ▼]

Leaflet of the new geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous editions in 1896 (at 1/40.000, by Forir). [less ▲]

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See detailVisé - St Martens Voeren. Carte géologique de la Wallonie à l'échelle du 1/25.000. 34/7-8
Barchy, Laurent; Marion, Jean-Marc ULiege

Cartographic material (2017)

New geological map of Wallonia published at the scale of 1/25.000, based on a new field work and using previous scientific data produced since the previous edition in 1896 (at 1/40.000, by Forir).

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See detailVisean corals from the transverse Jebel Begaa to Gara el Itima (eastern Tafilalt, Morocco)
Aretz, Markus; Denayer, Julien ULiege

in Document de l'Institut Scientifique, Rabat (2013), 26

Detailed reference viewed: 30 (1 ULiège)
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See detailViséan Lithostrotionidae (Rugosa) from Zonguldak and Bartin (NW Turkey)
Denayer, Julien ULiege

in Bulletin of Geosciences (2014), 89(4), 737-771

Detailed reference viewed: 29 (1 ULiège)
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See detailViser le "transversal" à travers du "bon disciplinaire" ou trois compétences transversales contextualisées au sein de l'enseignement des mathématiques.
Schneider-Gilot, Marguerite ULiege

in Repères: Revue des Instituts de Recherche sur l'Enseignement des Mathématiques (2004), 55

Detailed reference viewed: 34 (1 ULiège)
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See detailViser le développement de la composante éthique du savoir-agir professionnel des enseignants et formateurs.
Poumay, Marianne ULiege; Pirard, Florence ULiege

in Éthique en Éducation et en Formation : les Dossiers du GREE (2016), 3(2), 79-95

L'article interroge la formation déontologique des enseignants et formateurs en Sciences de l’éducation à partir de la description de dispositifs mis en place depuis 2001 à l’Université de Liège. Cette ... [more ▼]

L'article interroge la formation déontologique des enseignants et formateurs en Sciences de l’éducation à partir de la description de dispositifs mis en place depuis 2001 à l’Université de Liège. Cette description montre l’importance accordée à l’étude et la résolution fictive de cas concrets, vécus par les participants en tant qu’élèves ou dans une activité professionnelle. L’article explicite les fondements de sa méthodologie, propose une réflexion sur les difficultés rencontrées et ouvre sur une discussion présentant des perspectives de régulation. [less ▲]

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See detailViser le développement des pratiques d’Assessment for Learning (AfL) dans le contexte de la 1re année à l’université : cadre théorique, dispositif et initiatives pédagogiques résultant duprojet«Feedbacks1er bac»
Leduc, Laurent ULiege; Mohr, Audrey ULiege; Marichal, Eléonore ULiege et al

in Detroz, Pascal; Crahay, Marcel; Fagnant, Annick (Eds.) L'évaluation à la lumière des contextes et des disciplines (2017)

Detailed reference viewed: 46 (22 ULiège)
See detailLa visibilité des femmes chef d’entreprise/ à un poste de responsabilité dans la presse d’affaires
Cornet, Annie ULiege

Conference given outside the academic context (2014)

Detailed reference viewed: 25 (6 ULiège)
See detailLa visibilité des femmes d’affaires dans la presse d’affaire
Cornet, Annie ULiege

Conference given outside the academic context (2008)

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See detailVisibilité des femmes d'affaires dans la presse d'affaires francophone belge
Cornet, Annie ULiege; dubois, valérie

Report (2014)

Detailed reference viewed: 43 (6 ULiège)
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See detailVisibility, integration models and political representation
Morales, Laura; Sobolewska, Maria; Vintila, Cristina-Daniela ULiege et al

in Saalfeld, Thomas; Morales, Laura; Sobolewska, Maria (Eds.) Understanding the patterns of political representation of citizens of immigrant origin in Europe (in press)

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See detailVisible light induced ring-opening metathesis polymerisation of cyclooctene
Delaude, Lionel ULiege; Demonceau, Albert ULiege; Noels, Alfred ULiege

in Chemical Communications (2001), (11), 986-987

Under visible light irradiation, ruthenium-arene complexes bearing N-heterocyclic carbene ligands with aryl substituents - either preformed or generated in situ - are active catalyst precursors for the ... [more ▼]

Under visible light irradiation, ruthenium-arene complexes bearing N-heterocyclic carbene ligands with aryl substituents - either preformed or generated in situ - are active catalyst precursors for the ROMP of cyclooctene already at room temperature. [less ▲]

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See detailEl visible traductor Jorge Luis Borges
Willson, Patricia ULiege

Article for general public (2006)

Detailed reference viewed: 33 (6 ULiège)