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See detailPhysicochemical properties and thermal behaviour of African wild mango (Irvingia gabonensis) seed oil.
Yamoneka, Juste; Malumba Kamba, Paul ULg; Blecker, Christophe ULg et al

Poster (2015, March 15)

African wild mango (lrvingia gabonensis) is now recognized for its numerous food and medicinal uses. This plant produces seeds rich in fat, which is traditionally used as a soup thickener. in the present ... [more ▼]

African wild mango (lrvingia gabonensis) is now recognized for its numerous food and medicinal uses. This plant produces seeds rich in fat, which is traditionally used as a soup thickener. in the present study, the proximate composition of seeds from lrvingia gabonensis is reported. The oil from the seeds was then solvent extracted; its fatty acid (FA) and triacylglycerol (TG) profiles were determined. Besides this chemical characterization, the melting and crystallization behaviour of the extracted fat was studied by pNMR, DSC and X-ray diffraction. The result of this investigation showed that the seeds from lrvingia gabonensis (IG) represent an important source of lipids (69-75%), rich in myristic (49.8%) and lauric acid (37%). This fat can be classified among "lauric fats". IG oil presents a good oxidative stability due to its low content in unsaturated fatty acid. The melting profiles of IG oil indicates that a high amount of fat remains solid at temperatures up to 30°C; the complete melting was detected at around 40C. The most stable polymorph of this fat is the β'1 -form. [less ▲]

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See detailPhysicochemical properties and thermal behaviour of African wild mango (Irvingia gabonensis) seed oil.
Yamoneka, Juste; Malumba Kamba, Paul ULg; Blecker, Christophe ULg et al

Poster (2015, March 15)

Plants belonging Dacryodes and lrvingia genus have great economic importance in Central and West Africa. lrvingia gabonensis (IG) produces a seed rich in fats, traditionally used as a soup thickener ... [more ▼]

Plants belonging Dacryodes and lrvingia genus have great economic importance in Central and West Africa. lrvingia gabonensis (IG) produces a seed rich in fats, traditionally used as a soup thickener. Fruit of Dacryodes edulis (DS) contains a pulp how are also rich in fat. Its seed constitute a big waste problem in towns and village remains not exploitable by local people however that may be valued as a resource for various components. Some study shows that this seed contented a proportion of oils that would be an alternative in the substitution of diesel relevant to their physicochemical properties. Despite the potential of two different oils, theirs scientific data still lack. In this work, thermo-physical behaviour of those two oils is compared in the aim to improving knowledge about properties of those oils that will promote their valorisation in industry scale. The result of this investigation showed that IGO have a highest proportion of oil content with 72.38% compared to DSO (14.64%). IGO is rich in myristic (49.8%) and lauric fatty acid (37%) but DSO sample was found to possess a higher proportion of linoleic acid (35.13%), palmitic (32.67%), oleic (17.70%) but lower proportion of stearic (9.97%). SFC of IGO was the highest at all temperatures. IGO is solid at room temperature with a complete melting at 40°C but DSO is liquid at room temperature. The polymorphism profile of IGO and DSO shows the 13' form stable during heating and a transition to liquid state without passage at β form. [less ▲]

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See detailCaractérisation physico-chimique et structurale de la poudre et des ulvanes de l'algue ulva lactuca
Guidara, Mariem; Yaich, Hela; Garna, Haikel et al

Poster (2015, March 15)

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See detailEfficacy of a web-based, center-based or combined physical activity intervention among older adults
Mouton, Alexandre ULg; Cloes, Marc ULg

in Health Education Research (2015)

With more social support and environment-centered interventions being recommended in web-based interventions, this study examined the efficacy of three intervention conditions aimed at promoting physical ... [more ▼]

With more social support and environment-centered interventions being recommended in web-based interventions, this study examined the efficacy of three intervention conditions aimed at promoting physical activity (PA) in older adults. The efficacy analyses included the self-reported PA level, stage of change for PA and awareness about PA among participants. Eligible participants (N = 149; M = 65 years old, SD = 6), recruited in a unique Belgian French-speaking municipality, were randomized in four research arms for a 3-month intervention: (i) web-based; (ii) center-based; (iii) mixed (combination of web- and center-based); and (iv) control (no intervention). Web-based condition included a PA website and monthly tailored emails whereas center-based condition comprised 12 sessions (1 per week) of group exercising. With a significant increase in PA, the PA stage of change and the PA awareness at 12 months, the mixed intervention condition seemed to include the key social and motivating elements for sustainable behavior change. Center-based intervention was more likely to produce significant improvements of the PA level and the stage of change for PA change whereas web-based intervention was more likely to extend the awareness about PA. [less ▲]

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See detailDouble thermo-responsive hydrogels from poly(vinylcaprolactam) containing diblock and triblock copolymers
Thomassin, Jean-Michel ULg; Mathieu, Kevin ULg; Kermagoret, Anthony ULg et al

in Polymer Chemistry (2015), 6(10), 1856-1864

The thermally-induced gelation and gel properties of concentrated aqueous solutions of double thermoresponsive poly(N-vinylamide)-based di- and triblock copolymers are studied by rheology. The copolymers ... [more ▼]

The thermally-induced gelation and gel properties of concentrated aqueous solutions of double thermoresponsive poly(N-vinylamide)-based di- and triblock copolymers are studied by rheology. The copolymers under investigation, prepared by cobalt-mediated radical polymerization and coupling reactions, are composed of poly(vinylcaprolactam) (PNVCL) blocks and of a statistical poly(vinylcaprolactam-stat-vinylpyrrolidone) segment with a cloud point temperature (TCP) higher than that of PNVCL. Heating the di- and triblock solutions beyond the first phase transition temperature favors gel formation while heating above the second TCP leads to opaque gels without macroscopic demixing. Moduli of the triblock hydrogels are systematically higher than those of the corresponding diblocks, even above the second transition. Rheological data suggest distinct micellar structures for each copolymer architecture: densely packed micelles of diblocks and 3-D networks of bridged micelles for triblocks. Strain sweep experiments also emphasize the positive effect of the micelle bridging on the elasticity and stability of the hydrogels. The formation and properties of the obtained gels are also shown to depend on the copolymer concentration, block length, and composition. Addition of salt also allows us to tune the phase transition temperatures of these double thermoresponsive hydrogels. [less ▲]

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See detailImages et rituel : l’exemple des pinakes de Locres Épizéphyrienne
Collard, Hélène ULg

Conference (2015, March 14)

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See detailunité: Eau-Environnement-Développement (ULg Campus Arlon): la télédétection au service de l'agriculture
Wellens, Joost ULg; Lang, Marie ULg; Benabdelouahab, Tarik et al

Diverse speeche and writing (2015)

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See detailThe role of personal goals in episodic future thought
D'Argembeau, Arnaud ULg

Conference (2015, March 14)

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See detailPrognostic value of (18)F-FDG PET/CT in liver transplantation for hepatocarcinoma.
Detry, Olivier ULg; Govaerts, Laurence; De Roover, Arnaud ULg et al

in World journal of gastroenterology : WJG (2015), 21(10), 3049-54

AIM: To evaluate the prognostic value of pretreatment FDG positron emission tomography computed tomography (PET-CT) in patients with hepatocarcinoma treated by liver transplantation (LT). METHODS: The ... [more ▼]

AIM: To evaluate the prognostic value of pretreatment FDG positron emission tomography computed tomography (PET-CT) in patients with hepatocarcinoma treated by liver transplantation (LT). METHODS: The authors retrospectively analyzed the data of 27 patients (mean age 58 +/- 9 years) who underwent FDG PET-CT before LT for hepatocarcinoma. Mean follow-up was 26 +/- 18 mo. The FDG PET/CT was performed according to a standard clinical protocol: 4 MBqFDG/kg body weight, uptake 60 min, low-dose non-enhanced CT. The authors measured the SUVmax and SUVmean of the tumor and the normal liver. The tumor/liver activity ratios (RSUVmax and RSUVmean) were tested as prognostic factors and compared to the following conventional prognostic factors: MILAN, CLIP, OKUDA, TNM stage, alphafoetoprotein level, portal thrombosis, size of the largest nodule, tumor differentiation, microvascular invasion, underlying cirrhosis and liver function. RESULTS: Overall and recurrence free survivals were 80.7% and 67.4% at 3 years, and 70.6% and 67.4% at 5 years, respectively. According to a multivariate Cox model, only FDG PET/CT RSUVmax predicted recurrence free survival. Even though the MILAN criteria alone were not predictive, it is worth noting that none of the patients outside the MILAN criteria and with RSUVmax < 1.15 relapsed. CONCLUSION: FDG PET/CT with an RSUVmax cut-off value of 1.15 is a strong prognostic factor for recurrence and death in patients with HCC treated by LT in this retrospective series. Further prospective studies should test whether this metabolic index should be systematically included in the preoperative assessment. [less ▲]

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See detailLa prevención cuaternaria en la clínica cotidiana.
Jamoulle, Marc ULg; Bernstein, Jorge; Pizzanelli, Miguel et al

Conference (2015, March 14)

Remue méninge sur les développements futur du concept de prévention quaternaire

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See detailÉtude d’une stratégie diplomatique: l’internonce Antonio Bichi et l’absolution de Charles IV de Lorraine (1645)
Regibeau, Julien ULg

Conference (2015, March 13)

Le 22 décembre 1645, l’internonce en poste à Bruxelles, Antonio Bichi, donne l’absolution à Charles IV de Lorraine . La sentence prononcée par l’envoyé pontifical doit mettre fin à plus de trois années de ... [more ▼]

Le 22 décembre 1645, l’internonce en poste à Bruxelles, Antonio Bichi, donne l’absolution à Charles IV de Lorraine . La sentence prononcée par l’envoyé pontifical doit mettre fin à plus de trois années de tensions qui font suite à la bulle d’excommunication fulminée par le pape Urbain VIII à l’encontre du duc. Pour le Saint-Siège l’enjeu diplomatique de ce geste est grand. Charles IV, duc de Lorraine et de Bar, est en effet un membre important du parti des dévots, hostile à Richelieu et à sa politique d’abaissement de la maison d’Autriche. Réfugié aux Pays-Bas depuis l’occupation de ses états par le cardinal, en 1634, il prend part aux dernières phases de la guerre de Trente Ans en mettant ses troupes au service des Habsbourg, aussi bien en France que dans l’Empire. Or, l’excommunication du duc comme la mauvaise volonté dont celui-ci semble faire preuve pour répondre aux exigences de la Curie romaine ont peu à peu créé des dissensions au sein du clergé et du gouvernement des Pays-Bas. L’irritation qui règne menacerait même la bonne conduite de la guerre menée contre la France et ses alliés protestants. Si, à première vue, la papauté ne prend pas une part active dans ce conflit, elle veille naturellement, à travers ses nonces, aux intérêts catholiques qui sont en jeu. J'ai choisi, à l’occasion de ce colloque, d'étudier plus en détail la conduite de l’internonce Bichi dans le retour en grâce de Charles IV et son absolution en 1645. À cette occasion, j'ai voulu dégager, d’une part, les stratégies mises en place par le prélat pour arriver à ses fins (maîtrise de l’information, entreprise de désinformation et de dénigrement du duc,…) et, d’autre part, les acteurs et les réseaux avec lesquels il est en prise lors de ces négociations (gouvernement des Pays-Bas espagnols, confesseurs, parti des dévots, ordres religieux, Saint Office,…). Une telle analyse devrait permettre de saisir la nature et l’étendue des ressources que l’internonce utilise afin de mener une véritable politique de détente, propre à réconcilier les intérêts politico-religieux et les intérêts juridico-dogmatiques du Saint-Siège. Je désirerais, par cet exercice apporter une contribution à la compréhension de la politique menée par les nonces du Saint-Siège lors de la fin de la guerre de Trente Ans et à l’occasion des Congrès de Westphalie ; moments diplomatiques habituellement considérés par l’historiographie comme étant défavorables à la papauté. [less ▲]

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See detailJustice révolutionnaire v. justice d’Etat. Les années de plomb en Italie, entre représentations cinématographiques et représentations juridiques
Thirion, Nicolas ULg; Pasteger, David ULg

Conference (2015, March 13)

La présente contribution a une double ambition : d’une part, étudier, illustrations cinématographiques à l’appui, l’acte de juger et ses prodromes (enquêtes, procédures, interrogatoires, etc.), dans un ... [more ▼]

La présente contribution a une double ambition : d’une part, étudier, illustrations cinématographiques à l’appui, l’acte de juger et ses prodromes (enquêtes, procédures, interrogatoires, etc.), dans un contexte géographique et historique bien déterminé – en l’espèce, l’Italie des années de plomb – ; d’autre part, examiner les situations ainsi rencontrées à la lumière d’une théorie du droit – en l’occurrence, la théorie de la pluralité des ordres juridiques de Santi Romano – particulièrement éclairante pour comprendre les ressorts de la lutte à laquelle se livrèrent, dans ce cadre, organisations subversives, voire terroristes, et forces étatiques, aussi bien d’un point de vue historique que dans les représentations plus ou moins fidèles qui en ont été faites dans le corpus cinématographique retenu pour les besoins de la démonstration. [less ▲]

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See detailL’administration Obama, est-elle dépourvue d’une stratégie internationale ?
Santander, Sébastian ULg

Conference given outside the academic context (2015)

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See detailDu travestissement à la traversée. À propos d’un bas-relief romain
Veymiers, Richard ULg

Conference (2015, March 13)

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See detailThe living of the green microalga Chlamydomonas reinhardtii in day/night cycles
Willamme, Rémi ULg; Alsafra, Zouheir; Alsafra, Rameshkumar et al

Poster (2015, March 13)

Detailed reference viewed: 13 (0 ULg)
See detailLe et la cache. De quelques documentaires qui rendent visibles sans montrer.
Hamers, Jérémy ULg

Conference (2015, March 13)

Detailed reference viewed: 17 (1 ULg)
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See detailArtificial Intelligence in Video Games: Towards a Unified Framework
Safadi, Firas ULg; Fonteneau, Raphaël ULg; Ernst, Damien ULg

in International Journal of Computer Games Technology (2015), 2015

With modern video games frequently featuring sophisticated and realistic environments, the need for smart and comprehensive agents that understand the various aspects of complex environments is pressing ... [more ▼]

With modern video games frequently featuring sophisticated and realistic environments, the need for smart and comprehensive agents that understand the various aspects of complex environments is pressing. Since video game AI is often specifically designed for each game, video game AI tools currently focus on allowing video game developers to quickly and efficiently create specific AI. One issue with this approach is that it does not efficiently exploit the numerous similarities that exist between video games not only of the same genre, but of different genres too, resulting in a difficulty to handle the many aspects of a complex environment independently for each video game. Inspired by the human ability to detect analogies between games and apply similar behavior on a conceptual level, this paper suggests an approach based on the use of a unified conceptual framework to enable the development of conceptual AI which relies on conceptual views and actions to define basic yet reasonable and robust behavior. The approach is illustrated using two video games, Raven and StarCraft: Brood War. [less ▲]

Detailed reference viewed: 384 (34 ULg)