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See detailLight, alertness, cognition, and much more
Vandewalle, Gilles ULg

Scientific conference (2015, April 13)

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See detailThe light-front gauge-invariant energy-momentum tensor
Lorce, Cédric ULg

in Journal of High Energy Physics [=JHEP] (2015)

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See detailLight-front interpretation of Proton Generalized Polarizabilities
Gorchtein, M.; Lorce, Cédric ULg; Pasquini, B. et al

in Physical Review Letters (2010), 104

We extend the recently developed formalism to extract light-front quark charge densities from nucleon form factor data to the deformations of these quark charge densities when applying an external ... [more ▼]

We extend the recently developed formalism to extract light-front quark charge densities from nucleon form factor data to the deformations of these quark charge densities when applying an external electric field. We show that the resulting induced polarizations can be extracted from proton generalized polarizabilities. The available data for the generalized electric polarizability of the proton yield a pronounced structure in its induced polarization at large transverse distances, which will be pinned down by forthcoming high precision virtual Compton scattering experiments. [less ▲]

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See detailLight-induced gas exchanges in shortly illuminated intact etiolated leaves measured by mass spectrometry
Franck, Fabrice ULg; Peltier, Gilles

in Colloque de Photosynthèse (1986)

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See detailLight-induced Hetero-Diels Alder cycloaddition as a new coupling method to biomolecule radiolabeling
Dammicco, Sylvestre ULg; Luxen, André ULg; Thonon, David et al

Poster (2013, May 16)

The formation of a C-18F bond requires hard conditions which is problematic for the biomolecule radiolabelling. The alternative method which has been developed since a few decades consists in ... [more ▼]

The formation of a C-18F bond requires hard conditions which is problematic for the biomolecule radiolabelling. The alternative method which has been developed since a few decades consists in incorporating the 18F on a prosthetic group and coupling it to the biomolecule. The copper (I)-catalysed 1,2,3-triazole formation involving azides and terminal alkynes is a powerful and rapid method of coupling but present the inconvenient of the employment of cytotoxic reagents. The photoclick conjugation is a promising alternative with no need of catalyst[1]. Recently, a light-induced hetero-Diels Alder cycloaddition involving a 3-(hydroxymethyl)-2-naphthol derivative and an electron-rich olefin has been developed[2]. This reaction seems well adapted for the fast conjugation of radionuclides to biomolecules. Herein we report the synthesis of a [18F]fluoronaphtoquinone derivative as prosthetic group and its reaction with vinyl ethers. [less ▲]

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See detailLight-induced quenching of photosystem II fluorescence at 77 K
Kyle, D. J.; Arntzen, C. J.; Franck, Fabrice ULg et al

in Photochemistry & Photobiology (1983), 38

Light-induced quenching of the low temperature fluorescence emission from photosystem II (PS II) at 695 nm (F695) has been observed in chloroplasts and whole leaves of spinach. Photosystem I (PS I ... [more ▼]

Light-induced quenching of the low temperature fluorescence emission from photosystem II (PS II) at 695 nm (F695) has been observed in chloroplasts and whole leaves of spinach. Photosystem I (PS I) fluorescence emission at 735 nm (F735) is quenched to a lesser degree but this quenching is thought to originate from PS II and is manifest in a reduced amount of excitation energy available for spillover to PS I. Differential quenching of these two fluorescence emissions leads to an increase in the F735/F685 ratio on exposure to light at 77 K. Rewarming the sample from -196°C discharges the thermoluminescence Z-band and much of the original unquenched fluorescence is recovered. The relationship between the thermoluminescence Z-band and the quenching of the low temperature fluorescence emission (F695) is discussed with respect to the formation of reduced pheophytin in the PS II reaction center at 77 K. [less ▲]

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See detailLight-sensitive brain pathways and aging
Daneault, Véronique; Dumont, Marie; Massé, Eric et al

in Journal of Physiological Anthropology (2016), 35(9),

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See detailLIGHTWEIGHT CEMENTITIOUS MORTAR MADE WITH FOAMED PLASTIC WASTE AGGREGATES
Coppola, Bartolomeo ULg; Di Maio, Luciano; Courard, Luc ULg et al

in Durability and Sustainability of Concrete Structures – Workshop Proceedings, Bologna 1-3 October 2015 (2015)

In recent years the increasing interest for eco-sustainable building materials and the rising issue of plastic waste disposal are leading to the engineering of new composite construction materials ... [more ▼]

In recent years the increasing interest for eco-sustainable building materials and the rising issue of plastic waste disposal are leading to the engineering of new composite construction materials incorporating post consumer recycled plastics, able at the same time to meet new standard requirements, in terms of energy efficiency, and to reduce the consumption of natural resources. In the context of these issues, we have performed investigations on the effects of the addition of foamed artificial aggregates deriving from recycled plastic materials to a cementitious mortar. For this purpose, several mortar samples containing natural sand and different amounts (10, 25 and 50 % by volume) of foamed recycled plastic wastes were produced. The foaming of the recycled plastic waste was performed in laboratory by a foam extrusion process using a blowing agent (2 wt.%). An artificial aggregates particle size distribution similar to standard sand was used. Rheological and physical properties of lightweight mortar were studied. The improved surface roughness of foamed plastic aggregates ensures a more continuous interface and the presence of surface pores provides interlocking effect with cement paste. Replacement of natural sand by artificial aggregates produces a lightweight mortar but reduces mechanical properties. [less ▲]

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See detailA Lightweight Network Proximity Service Based On Neighborhood Models
Liao, Yongjun; Du, Wei; Leduc, Guy ULg

in 22nd IEEE Symposium on Communications and Vehicular Technology in the Benelux (SCVT) (2015, November 24)

This paper proposes a network proximity service based on the neighborhood models used in recommender systems. Unlike previous approaches, our service infers network proximity without trying to recover the ... [more ▼]

This paper proposes a network proximity service based on the neighborhood models used in recommender systems. Unlike previous approaches, our service infers network proximity without trying to recover the latency between network nodes. By asking each node to probe a number of landmark nodes which can be servers at Google, Yahoo and Facebook, etc., a simple proximity measure is computed and allows the direct ranking and rating of network nodes by their proximity to a target node. The service is thus lightweight and can be easily deployed in e.g. P2P and CDN applications. Simulations on existing datasets and experiments with a deployment over PlanetLab showed that our service achieves an accurate proximity inference that is comparable to state-of-the-art latency prediction approaches, while being much simpler. [less ▲]

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See detail« Le lignage de Guillaume d’Orange dans la tradition italienne : l’exemple du Libro del Povero Avveduto, roman chevaleresque florentin du Quattrocento »
Moreno, Paola ULg

in Moreno, Paola; Palumbo, Giovanni (Eds.) Autour du XVe siècle. Journées d’études en l’honneur d’Alberto Varvaro. Actes du Symposium international L’automne du Moyen Âge. Textes, histoire, iconographie. (2008)

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See detailLa ligne et la boucle : une lecture de Michel Strogoff (1876)
Durand, Pascal ULg

Scientific conference (2015, April 29)

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See detailLa ligne et la boucle. Michel Strogoff ou l'involution
Durand, Pascal ULg

Conference (2016, April 28)

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See detailLes Lignées Climaciques de Wallonie
Hendrickx, Sébastien ULg; Van Der Kaa, Claire ULg

Book published by CPDT (2014)

En lien direct avec la cartographie des climax écosystémiques de la wallonie, réalisée dans le cadre de la recherche d'initiative I4 CPDT ayant pour thème "la biodiversité sous l'angle des dynamiques ... [more ▼]

En lien direct avec la cartographie des climax écosystémiques de la wallonie, réalisée dans le cadre de la recherche d'initiative I4 CPDT ayant pour thème "la biodiversité sous l'angle des dynamiques écosystémiques co-évolutive", cet ouvrage facilite la lecture de celle-ci et la rend opérationnelle. Il rassemble une série de fiches, une par lignée climacique identifiée par la cartographie des climax, qui décrivent ces lignées sur le plan biologique mais également en terme d'occupation et d'affectation du territoire. Elles donnent en outre une analyse de la situation existante pour chaque lignée et des recommandations par rapport aux mesures à mettre en oeuvre pour améliorer celle-ci. [less ▲]

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See detailLignées de carcinome prostatique et apoptose: état de la question
Califice, Stéphane ULg; Waltregny, David ULg; Castronovo, Vincenzo ULg et al

in Revue Médicale de Liège (2004), 59(12), 704-10

Prostate cancer is a major pathology in industrialized countries. Tumor growth usually results from increased cell proliferation, conjugated with an inhibition of programmed cell death (apoptosis). In ... [more ▼]

Prostate cancer is a major pathology in industrialized countries. Tumor growth usually results from increased cell proliferation, conjugated with an inhibition of programmed cell death (apoptosis). In this paper, after a short description of the apoptotic mechanisms and their methods of investigation, we review the present knowledge of the implication of different molecular actors in the regulation of apoptosis in prostate cancer cells. This review notably summarizes the present knowledge of the (de)regulation of the effects of androgens, p53, Bcl-2, Bcl-xL, Bax, Akt, PTEN, Par-4, clusterine, caspases and NF-kappaB in prostate adenocarcinoma cell lines and provides an appraisal of their therapeutic potential. A better knowledge of the apoptotic pathways in these cells could indeed allow the development of new selective and effective anti-cancer strategies. [less ▲]

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See detailLignes de conduite et tensions des politiques publiques en matière d'information jeunesse : le cas de la Belgique francophone
Guillaume, Jean-François ULg

Conference (2012, July)

Prenant appui sur les résultats d'une recherche menée dans le secteur de l'information jeunesse en Communauté française de Belgique, cette contribution explore les enjeux majeurs d'une politique d ... [more ▼]

Prenant appui sur les résultats d'une recherche menée dans le secteur de l'information jeunesse en Communauté française de Belgique, cette contribution explore les enjeux majeurs d'une politique d'information des jeunes et les contraintes les plus pesantes sur la mise en oeuvre de la mission d'éducation citoyenne qui est assignée aux différents opérateurs. [less ▲]

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See detailLes lignes de force de l'accord interprofessionnel pour 2003-2004
Michiels, Olivier ULg

in Journal du Juriste (2003), 23

Plan: Les dispositions relatives aux groupes à risque et aux jeunes auxquels s'applique un parcours d'insertion; La convention de premier emploi; La prépension; Les cotisations et retenues sur les ... [more ▼]

Plan: Les dispositions relatives aux groupes à risque et aux jeunes auxquels s'applique un parcours d'insertion; La convention de premier emploi; La prépension; Les cotisations et retenues sur les avantages complémentaires. [less ▲]

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