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

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 ULiege

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)

Detailed reference viewed: 43 (5 ULiège)
See detailLa ligne et la boucle : une lecture de Michel Strogoff (1876)
Durand, Pascal ULiege

Scientific conference (2015, April 29)

Detailed reference viewed: 64 (5 ULiège)
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See detailLa Ligne et la Boucle. Michel Strogoff ou l'involution technologique
Durand, Pascal ULiege

in Pinson, Guillaume; Prévost, Maxime (Eds.) Jules Verne et la culture médiatique (in press)

Detailed reference viewed: 138 (29 ULiège)
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See detailLa ligne et la boucle. Michel Strogoff ou l'involution
Durand, Pascal ULiege

Conference (2016, April 28)

Detailed reference viewed: 79 (19 ULiège)
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See detailLes Lignées Climaciques de Wallonie
Hendrickx, Sébastien ULiege; Van Der Kaa, Claire ULiege

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 ▲]

Detailed reference viewed: 37 (10 ULiège)
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See detailLignées de carcinome prostatique et apoptose: état de la question
Califice, Stéphane ULiege; Waltregny, David ULiege; Castronovo, Vincenzo ULiege 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 ▲]

Detailed reference viewed: 47 (7 ULiège)
See detailLes lignes de chemins de fer transfrontalières et leur rôle dans la stratégie militaire belge en 1914
Bechet, Christophe ULiege

Scientific conference (2013, September 21)

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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 ULiege

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 ULiege

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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See detailLes lignes de force du Code pénal social
Kefer, Fabienne ULiege

in Peeters, Johan (Ed.) Het Sociaal Strafwetboek gewikt en gewogen (2011)

Detailed reference viewed: 40 (5 ULiège)
See detailLignes de vie
Tomasovic, Dick ULiege

in APCVL (Ed.) Lycéens au cinéma en Région Centre - 2003 (2003)

Detailed reference viewed: 10 (0 ULiège)
Peer Reviewed
See detailLigniculture et maintien de la fertilité des sols dans l'Ouest-Cameroun
Njoukam, Raphaël; Bock, Laurent ULiege; Hebert, Jacques ULiege et al

in Bois et Forêts des Tropiques (1996), (249), 33-49

Detailed reference viewed: 24 (1 ULiège)
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See detailLignin as a bio-based flame retardant additive: Pretreatments overview
Istasse, Thibaut ULiege; Jacquet, Nicolas ULiege; Richel, Aurore ULiege

Poster (2016, June 12)

Lignin is a cross-linked phenol polymers from plant cells wall and is the third most abundant organic material after cellulose and hemicelluloses. This substance was studied as a flame retardant for ... [more ▼]

Lignin is a cross-linked phenol polymers from plant cells wall and is the third most abundant organic material after cellulose and hemicelluloses. This substance was studied as a flame retardant for various polymers and represents an interesting opportunity to create more eco-friendly and safer plastics and resins. This poster explains one potential technology to extract lignin: the organosolv treatment. [less ▲]

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See detailLignin as a raw material for industrial materials applications
Richel, Aurore ULiege; Vanderghem, Caroline ULiege; Jacquet, Nicolas ULiege et al

Poster (2014)

Native lignin is an abundant biopolymer on earth and represents 15-30% by weight of the lignocellulosic biomass. Lignin is a heterogeneous cross-linked polymer composed of phenylpropane units (guaiacyl ... [more ▼]

Native lignin is an abundant biopolymer on earth and represents 15-30% by weight of the lignocellulosic biomass. Lignin is a heterogeneous cross-linked polymer composed of phenylpropane units (guaiacyl, syringyl or p-hydroxyphenyl) linked together by a panel of specific ether or carbon-carbon bonds.[1] Nowadays, large amounts of lignins and lignin-based wastes are available and originate either from the pulp and paper manufacturing or from the production of bioethanol from lignocellulose. [2] Typically, these lignins are dedicated to energetic purposes by combustion. In recent years however, novel axes for high added value applications have emerged and concern, notably, the use of lignin as performance products (e.g. polymer additives, binders) or specialty chemicals (e.g. surface-active agents) for materials applications.[3] Herein, several applications of lignin in materials sciences with industrial issues are presented. A correlation is established between the extraction processes from lignocellulosic materials and the chemical structure and physico-chemical properties of lignins.[4] Our research group has also developed new methodologies for the extraction of highly pure lignins from several starting materials, including food wastes, herbaceous raw materials and wood biomass. These methodologies include microwave-assisted extraction and two-step conventional pretreatment involving steam explosion. These methodologies are described in this presentation. [less ▲]

Detailed reference viewed: 185 (31 ULiège)
Peer Reviewed
See detailLignin as a raw material for industrial materials applications
Richel, Aurore ULiege; Vanderghem, Caroline ULiege; Jacquet, Nicolas ULiege et al

Poster (2013, October)

Native lignin is an abundant biopolymer on earth and represents 15-30% by weight of the lignocellulosic biomass. Lignin is a heterogeneous cross-linked polymer composed of phenylpropane units (guaiacyl ... [more ▼]

Native lignin is an abundant biopolymer on earth and represents 15-30% by weight of the lignocellulosic biomass. Lignin is a heterogeneous cross-linked polymer composed of phenylpropane units (guaiacyl, syringyl or p-hydroxyphenyl) linked together by a panel of specific ether or carbon-carbon bonds.[1] Nowadays, large amounts of lignins and lignin-based wastes are available and originate either from the pulp and paper manufacturing or from the production of bioethanol from lignocellulose. [2] Typically, these lignins are dedicated to energetic purposes by combustion. In recent years however, novel axes for high added value applications have emerged and concern, notably, the use of lignin as performance products (e.g. polymer additives, binders) or specialty chemicals (e.g. surface-active agents) for materials applications.[3] Herein, several applications of lignin in materials sciences with industrial issues are presented. A correlation is established between the extraction processes from lignocellulosic materials and the chemical structure and physico-chemical properties of lignins.[4] Our research group has also developed new methodologies for the extraction of highly pure lignins from several starting materials, including food wastes, herbaceous raw materials and wood biomass. These methodologies include microwave-assisted extraction and two-step conventional pretreatment involving steam explosion. These methodologies are described in this presentation. [less ▲]

Detailed reference viewed: 113 (20 ULiège)
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See detailLignin degradation and stability: Volatile Organic Compounds (VOCs) analysis throughout processing
Sallem-Idrissi, N.; Vanderghem, C.; Pacary, T. et al

in Polymer Degradation and Stability (2016), 130

This work investigates the Volatile Organic Compounds (VOCs) emissions during the processing of composite of polyamide 6 (PA) bio-filled with technical lignin. This is of prime interest as volatile ... [more ▼]

This work investigates the Volatile Organic Compounds (VOCs) emissions during the processing of composite of polyamide 6 (PA) bio-filled with technical lignin. This is of prime interest as volatile phenolic structural monomers issued from lignin could penetrate the human organism and cause undesirable health damages. A special attention is given to the measurement of formaldehyde as it is known to be a human carcinogen. Lignin main identified emission consists of a high level of formaldehyde and a large amount of complex substituted phenol and benzene, all representative and constitutive of its structure. Regarding the PA alone, it has been found that the predominant VOC product is ϵ-caprolactam. When filling PA6 with lignin, the emitted VOCs associated to this filler are mainly produced during the extrusion while, only traces are detected during the injection process. Formaldehyde emission level is three times higher during the injection than during the extrusion. Phenols and some remaining reactants used during industrial cellulosic extraction process are identified. Regarding the value of the Short-Term Exposure Limit (STEL), suitable industrial process, safety and hygiene rules must be adopted. © 2016 Elsevier Ltd. All rights reserved. [less ▲]

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See detailLignin extraction from Mediterranean agro-wastes: Impact of pretreatment conditions on lignin chemical structure and thermal degradation behavior
Manara, Panagiota; Zabaniotou, Anastasia; Vanderghem, Caroline ULiege et al

in Catalysis Today (2014), 223

Three different types of Mediterranean, agro-industrial wastes (olive kernels, grape pomace/seeds, peach kernels), were subjected to two pretreatment processes, a chemical/organosolv and a physicochemical ... [more ▼]

Three different types of Mediterranean, agro-industrial wastes (olive kernels, grape pomace/seeds, peach kernels), were subjected to two pretreatment processes, a chemical/organosolv and a physicochemical one. The organosolv process included lignocellulosic biomass treatment with formic acid/acetic acid/water (30/50/20, v/v%), for 3 h at 107 °C, while the physicochemical method was conducted by immersing the biomass in a water/ethanol (8/92, v/v%), H2SO4 0.32 M, solvent and further exposing the slurry to microwave irradiation (maximum 250 W) for 1/2 h at 150 °C. Both processes were evaluated regarding the achieved delignification and the purity of the extracted lignins. The effect of the pretreatment processes onto the structure and thermal decomposition behavior of the extracted lignins was investigated via FT-IR and TGA analysis, respectively. The objective of the research work was to investigate potential valorization routes for these biomass agro-residues in the context of a biorefinery, focusing on lignin extraction. The pretreatment results showed that the obtained lignins, derived from both procedures, were of high purity (>82 wt%). Under the organosolv procedure, peach kernel delignification showed the maximum value (∼16 wt%), while under microwave pretreatment, olive kernel delignification showed the maximum value (∼35 wt%). Grape pomace/seeds appeared to be the most resistant in both treatments. [less ▲]

Detailed reference viewed: 193 (36 ULiège)
See detailLa lignine, une molécule d'intérêt issue du bioraffinage lignocellulosique
Richel, Aurore ULiege

Conference (2012, November)

La mise sur pied d’initiatives de bioraffinage lignocellulosique génère des quantités importantes de lignines sous-exploitées. La lignine, l’une des molécules renouvelables les plus abondantes sur terre ... [more ▼]

La mise sur pied d’initiatives de bioraffinage lignocellulosique génère des quantités importantes de lignines sous-exploitées. La lignine, l’une des molécules renouvelables les plus abondantes sur terre, est un biopolymère fortement ramifié constitué d’unités aromatiques. La composition de ce polymère est fortement influencée par la nature du substrat lignocellulosique et par les conditions de cracking appliquées. Généralement destinée à des fins énergétiques, la lignine se voit aujourd’hui ouvrir de nouvelles pistes de valorisation à plus haute valeur ajoutée telles que des applications comme gaz de synthèse, additif dans le secteur de la plasturgie ou comme source de composés aromatiques destinés au secteur chimique. [less ▲]

Detailed reference viewed: 64 (20 ULiège)