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See detail8ème Cours de Mécanique Analytique II (2016-17), Bac3 phys, Master 1 Sc. Sp.
Surdej, Jean ULg

Learning material (2016)

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See detail两种挥发性化学信息素与小麦-豌豆间作协同作用
Xu, Qingxuan ULg; Chevalier Mendes Lopes, Thomas ULg; Hatt, Séverin ULg et al

Conference (2016, November 10)

当今的害虫防治理念已从传统的“杀灭”转向科学的“调控”,生态调控成为可持续农业领域中的研究热点之一。间作提高农作物的多样性是作物虫害生态调控途径之一,间作作物导致农田生物多样性增加、为天敌昆虫提供食物和避难所,从而使天敌种类和数量增加,为目标害虫控治作用增强。已有结果表明小麦与豌豆间作、混作,不仅有效降低小麦上麦长管蚜的种群数量,增加了天敌控制害虫的稳定性和持续性, ... [more ▼]

当今的害虫防治理念已从传统的“杀灭”转向科学的“调控”,生态调控成为可持续农业领域中的研究热点之一。间作提高农作物的多样性是作物虫害生态调控途径之一,间作作物导致农田生物多样性增加、为天敌昆虫提供食物和避难所,从而使天敌种类和数量增加,为目标害虫控治作用增强。已有结果表明小麦与豌豆间作、混作,不仅有效降低小麦上麦长管蚜的种群数量,增加了天敌控制害虫的稳定性和持续性, 而且可以增产保收、养地改土。一些昆虫取食诱导的挥发物和昆虫自身分泌物(如水杨酸甲酯MeSA、蚜虫报警信息素EBF)具有驱避蚜虫对植食性昆虫进行行为调控的直接防御,还可以通过吸引第三级营养级的天敌昆虫,提升间接防御害虫作用。 为了探索作物间作与行为调控挥发物的协同的控害效果,本研究采用小麦间作豌豆、协同化学信息素(MeSA、EBF)的释放,于比利时Gembloux地区连续两年(2015年3月-8月年和2016年3月-8月)进行田间实验。结果表明与单纯小麦-豌豆间作相比,小麦-豌豆间作配合EBF、MeSA的释放,提高了蚜茧蜂对豌豆蚜的寄生率,对蚜虫天敌草蛉、食蚜蝇、瓢虫也具有强烈的吸引作用,豌豆蚜及麦蚜的无翅蚜田间发生量分别降低达35%和30%。 间作的豌豆可以为天敌提供栖居和食物,有利于蚜虫天敌的繁殖,而豌豆蚜的发生峰期早于麦蚜发生峰期一周左右,因此间作结合挥发物的释放,更有利于豌豆田中的蚜虫主要天敌最大程度的转移到麦田中防控麦蚜,有效降低麦蚜发生峰期的种群数量,两种方法组合构成“吸引-补偿”(Attract–Reward)的机制,将挥发物行为调控与栖境管理两种防控害虫的方法有效的结合起来,进一步增强生防效果,有助于建立综合的小麦害虫绿色防控体系。 [less ▲]

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See detailDécider ensemble ou vivre ensemble?
Bouhon, Frédéric ULg

Scientific conference (2016, November 10)

Ce discours constitue la "leçon inaugurale" prononcée par l'auteur, selon la tradition de la Faculté de Droit, de Science politique et de Criminologie de Liège. L'exposé porte sur les notions de ... [more ▼]

Ce discours constitue la "leçon inaugurale" prononcée par l'auteur, selon la tradition de la Faculté de Droit, de Science politique et de Criminologie de Liège. L'exposé porte sur les notions de démocratie et de droits fondamentaux. À travers quelques questions choisies, l'auteur cherche à rappeler qu'il s'agit de concepts bien distincts, qui connaissent toutefois des interactions nombreuses. [less ▲]

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See detailMalachite and heterogenite behavior during the locked-cycle recycling of process water in flotation of copper-cobalt oxide ores
Shengo, Michel; Gaydardzhiev, Stoyan ULg; Kalenga, Pierre

in International Journal of Mineral Processing (2016), 157

The behavior of malachite and heterogenite was investigated during the process water recycling in flotation of copper-cobalt oxide ores from the deposit of Luiswishi located in Haut-Katanga province (DRC ... [more ▼]

The behavior of malachite and heterogenite was investigated during the process water recycling in flotation of copper-cobalt oxide ores from the deposit of Luiswishi located in Haut-Katanga province (DRC). A synthetic mill wastewater (SMWW) was utilized as feed water alone and in mixture with water recovered from the flotation tails in view to achieve at the laboratory scale the locked-cycle recycling of the industrial mill wastewater (IMWW). To simulate the chemical species presence in the pulp and their effects on the flotation of malachite and heterogenite, calcium, magnesium and bicarbonate ions were added to the feed water and the recoveries of copper and cobalt followed during the roughing flotation stage. The concentrate XRD and SEM analysis together with the floated minerals microanalyses by EDX spectroscopy, leaching tests of mono-minerals followed by the Pourbaix diagrams construction and DRIFT spectroscopy analyses, have enabled identifying changes in the surface properties of malachite and heterogenite interfering on the recovery of copper (40 %) and cobalt (58 %) with a significant drop in their concentrate grades (7.3 % Cu and 2.7 % Co). The deterioration of the concentrate characteristics results also from the gangue minerals entrainment. A better description of the valuable minerals behaviour in the SMWW presence could enable designing strategies in view enhancing their floatability during the locked-cycle recycling of water. [less ▲]

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See detailPouvoir politique et audace des juges
Grandjean, Geoffrey ULg

Scientific conference (2016, November 10)

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See detailMyoferlin is a novel exosomal protein and functional regulator of cancer-derived exosomes
Blomme, Arnaud; Fahmy, Karim; Peulen, Olivier ULg et al

in Oncotarget (2016)

Exosomes are communication mediators participating in the intercellular exchange of proteins, metabolites and nucleic acids. Recent studies have demonstrated that exosomes are characterized by a unique ... [more ▼]

Exosomes are communication mediators participating in the intercellular exchange of proteins, metabolites and nucleic acids. Recent studies have demonstrated that exosomes are characterized by a unique proteomic composition that is distinct from the cellular one. The mechanisms responsible for determining the proteome content of the exosomes remain however obscure. In the current study we employ ultrastructural approach to validate a novel exosomal protein myoferlin. This is a multiple C2-domain containing protein, known for its conserved physiological function in endocytosis and vesicle fusion biology. Emerging studies demonstrate that myoferlin is frequently overexpressed in cancer, where it promotes cancer cell migration and invasion. Our data expand these ndings by showing that myoferlin is a general component of cancer cell derived exosomes from different breast and pancreatic cancer cell lines. Using proteomic analysis, we demonstrate for the rst time that myoferlin depletion in cancer cells leads to a signi cantly modulated exosomal protein load. Such myoferlin-depleted exosomes were also functionally de cient as shown by their reduced capacity to transfer nucleic acids to human endothelial cells (HUVEC). Beyond this, myoferlin-depleted cancer exosomes also had a signi cantly reduced ability to induce migration and proliferation of HUVEC. The present study highlights myoferlin as a new functional player in exosome biology, calling for novel strategies to target this emerging oncogene in human cancer. [less ▲]

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See detailL'optique spatiale en Wallonie: de la génèse aux développements récents
Georges, Marc ULg; Denis, Stefan; Joannes, Luc

Scientific conference (2016, November 10)

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See detailEndocrine disruptors and parasitism: which effects on the sex behaviour of the amphipod Gammarus pulex ?
Fivet, Adeline; Horion, Sibylle; Thomé, Jean-Pierre ULg et al

Poster (2016, November 10)

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See detailBehaviour of bulk superconducting trapped field magnets subjected to magnetic fields with a transverse component
Vanderbemden, Philippe ULg; Caps, Hervé ULg; Vanderheyden, Benoît ULg et al

Conference (2016, November 10)

Bulk superconductors can be used as trapped field magnets with unprecedented performances. Such trapped field magnets find a variety of engineering applications, in particular for brushless rotating ... [more ▼]

Bulk superconductors can be used as trapped field magnets with unprecedented performances. Such trapped field magnets find a variety of engineering applications, in particular for brushless rotating machines and levitation devices. Compared to conventional permanent magnets, however, the magnetic field generated by a superconducting trapped field magnet is much more sensitive to the presence of an external field that is not perfectly aligned with the superconductor magnetic moment, i.e. when the external field has a transverse component. A situation where the superconductor experiences a magnetic field with a transverse component is likely to happen several times during running operation of the device. As an example, in a “trapped flux” synchronous machine, any variation of the load of the shaft may lead to a slight misalignment of the magnetic moment of the superconductor (placed in the rotor) with respect to the rotating field (generated by the stator). In such a situation, the superconductor is subjected to a rotating field, and the situation is likely to be different from a situation where the superconductor is subjected to a pure transverse field. In the present work, we aim at examining different scenarios (i.e. transverse or rotating) where the trapped field magnet is subjected to a transverse component. These configurations are examined both experimentally and numerically. The numerical model is used to determine the distribution of currents in the cross-section of the superconductor. We examine the conditions where the rotating field leads to a partial remagnetization of the sample and is therefore less detrimental that the application of a pure transverse field. We also show that the magnetic moment of the sample may behave differently that the field at the surface of the superconductor. Finally, we investigate the behavior of structures where the superconductor is attached to a thin ferromagnetic disk, and show the beneficial effect of such hybrid structures compared to the superconductor alone. Acknowledgements : The research was funded through the University of Liège (ULg) and an ARC grant for Concerted Research Actions, financed by the French Community of Belgium (Wallonia-Brussels Federation), under reference ARC 11/16-03. We greatly acknowledge M. Morita, S. Nariki and H. Teshima from Nippon Steel & Sumitomo Metal Corporation, Futtsu, Chiba. [less ▲]

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See detailReprint of Advancing the integration of corporate sustainability measurement, management and reporting
Maas, Karen; Schaltegger, Stefan; Crutzen, Nathalie ULg

in Journal of Cleaner Production (2016), 136

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See detailEtude des intermattes des herbiers à Posidonia oceanica
Abadie, Arnaud ULg

Doctoral thesis (2016)

Among Mediterranean marine ecosystems, Posidonia oceanica (L.) Delile seagrass meadows form a habitat playing an important ecological and economical role. They form heterogeneous seascapes influenced by ... [more ▼]

Among Mediterranean marine ecosystems, Posidonia oceanica (L.) Delile seagrass meadows form a habitat playing an important ecological and economical role. They form heterogeneous seascapes influenced by the impact of natural and anthropogenic phenomenon (of which the anchoring of leisure ships). These impacts lead to the formation of sand and bare mat patches called ‘intermattes’. By describing and using intermatte characteristics observed in Calvi Bay and more widely around Corsica, these PhD works precisely described intermatte and P. oceanica seascape dynamics in order to develop new methods of analysis. On the one hand, natural sandy intermattes formed by bottom currents show two types of border. Each has its own characteristics at the level of the sediments biogeochemistry. On the other hand, anthropogenic intermattes generated by anchoring (bare mat) present different sizes and shapes resulting from specific dynamics. They are not recolonized when the anchoring pressure remains high. A depletion of the substrate chemical quality occurs after the mechanical destruction. A new cartographic seascape index, the Patchiness Source Index, was created using the size and the nature of intermattes at large spatial scale. After a comparison of methods used for the study of intermattes, two new indices (Map Anchoring Index and Anchoring Index) for managers of coastal areas were developed to evaluate the impact of anchoring within P. oceanica meadows. [less ▲]

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See detailIntegrating corporate sustainability assessment, management accounting, control, and reporting
Maas, Karen; Schaltegger, Stefan; Crutzen, Nathalie ULg

in Journal of Cleaner Production (2016), 136

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See detailSpecial Volume: The Integration of Corporate Sustainability Assessment, Management Accounting, Control, and Reporting
Maas, Karen; Schaltegger, Stefan; Crutzen, Nathalie ULg

in Journal of Cleaner Production (2016), 136

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See detailArt, musique et intégration des réfugiés. Le cas de Naples en Italie
Mazzola, Alessandro ULg

Conference given outside the academic context (2016)

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See detailAudition au Parlement wallon sur la possibilité juridique d'interdire aux fonctionnaires locaux en contact avec le public le port de signes convictionnels ostentatoires
Behrendt, Christian ULg

Report (2016)

Audition comme expert par la Commission des pouvoirs locaux, du logement et de l'énergie du Parlement wallon, Namur, Parlement wallon, 10 novembre 2016.

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See detailRencontre en présence de l’auteur autour du livre de MARTINEZ-GROS G., Fascination du djihâd. Fureurs islamistes et défaite de la paix
Regibeau, Julien ULg; Attiya, Radouane ULg; Martinez-Gros, Gabriel

Conference given outside the academic context (2016)

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See detailBRAIN-TRAINS: Integrating the LCA methodology in and interdisciplinary project
Merchan Arribas, Angel ULg; Belboom, Sandra ULg; Léonard, Angélique ULg

in Proceedings of the 5th international conference on Life Cycle approaches (2016, November 09)

BRAIN-TRAINS is a project supported by the Belgian Federal Government that deals with the possible development of rail freight intermodality in Belgium, approaching this transport issue from an ... [more ▼]

BRAIN-TRAINS is a project supported by the Belgian Federal Government that deals with the possible development of rail freight intermodality in Belgium, approaching this transport issue from an interdisciplinary perspective. Life Cycle Assessment (LCA) methodology is used to analyse the sustainability impact of rail freight intermodality. The rail freight system has been divided in three sub-systems: rail transport operation, rail infrastructure and rail transport equipment (locomotives and wagons). First, a SWOT analysis of the intermodal rail freight transport has been performed to identify internal characteristics and possible external trends of the intermodal rail freight transport. The most important elements identified in the SWOT analysis have been selected through a Delphi-technique with the collaboration of a panel of expert. Thirdly, the selected elements have been translated into clear and measurable parameters, defining for every parameter an input value to quantify the scenarios. The parameters are measured in “tonne-kilometre”. Finally, three divergent Belgian scenarios with a time horizon set in 2030 have been built for further analysis. These scenarios are directly linked to the third strategic goal of the European Commission’s White Paper on transport (2011), which aims to shift the 30% of road freight over 300 km to other modes such as rail transport by 2030. As a result, a best, worst and medium case scenarios have been developed, depending on whether the 30% shift has been successfully accomplished, the status quo has been maintained or the goal has not been completely reached by 2030, respectively. The direct transport emissions and energy consumption during the rail transport activity have been determined using the LCA methodology. These LCA results have been used to improve the accuracy of existing commercial databases as Ecoinvent for the Belgian situation. [less ▲]

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