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See detailAbusive margin squeeze: an overview of European national case laws
Petit, Nicolas ULg; Provost, Elise ULg

in e-Competitions (2009)

The purpose of this brief article is to introduce the reader to the national case-law on abusive margin squeezes that was commented in the e-competitions bulletin over the period 2003-2009.To this end, it ... [more ▼]

The purpose of this brief article is to introduce the reader to the national case-law on abusive margin squeezes that was commented in the e-competitions bulletin over the period 2003-2009.To this end, it seeks, to the extent possible, to analyze the 23 e-competitions case notes in relation to six items which are generally reviewed in margin squeeze cases, i.e., existence of an upstream input and a downstream product/service (1); indispensability of the upstream input (2); dominance in the upstream market and vertical integration (3); particularly aggressive downstream pricing policy (4); anticompetitive effects (5); absence of objective justifications (6). In addition, the present article reviews a seventh issue, namely sanctions and remedies (7), where national enforcement practices may again diverge/converge. [less ▲]

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See detailKu proteins interact with activator protein-2 transcription factors and contribute to ERBB2 overexpression in breast cancer cell lines.
Nolens, Grégory ULg; Pignon, Jean-Christophe ULg; Koopmansch, Benjamin ULg et al

in Breast Cancer Research [=BCR] (2009), 11(6),

INTRODUCTION: Activator protein-2 (AP-2) alpha and AP-2 gamma transcription factors contribute to ERBB2 gene overexpression in breast cancer. In order to understand the mechanism by which the ERBB2 gene ... [more ▼]

INTRODUCTION: Activator protein-2 (AP-2) alpha and AP-2 gamma transcription factors contribute to ERBB2 gene overexpression in breast cancer. In order to understand the mechanism by which the ERBB2 gene is overexpressed we searched for novel AP-2 interacting factors that contribute to its activity. METHODS: Ku proteins were identified as AP-2 alpha interacting proteins by glutathione serine transferase (GST)-pull down followed by mass spectrometry. Transfection of the cells with siRNA, expression vectors and reporter vectors as well as chromatin immunoprecipitation (ChIP) assay were used to ascertain the implication of Ku proteins on ERBB2 expression. RESULTS: Nuclear proteins from BT-474 cells overexpressing AP-2 alpha and AP-2 gamma were incubated with GST-AP2 or GST coated beads. Among the proteins retained specifically on GST-AP2 coated beads Ku70 and Ku80 proteins were identified by mass spectrometry. The contribution of Ku proteins to ERBB2 gene expression in BT-474 and SKBR3 cell lines was investigated by downregulating Ku proteins through the use of specific siRNAs. Depletion of Ku proteins led to downregulation of ERBB2 mRNA and protein levels. Furthermore, reduction of Ku80 in HCT116 cell line decreased the AP-2 alpha activity on a reporter vector containing an AP-2 binding site linked to the ERBB2 core promoter, and transfection of Ku80 increased the activity of AP-2 alpha on this promoter. Ku siRNAs also inhibited the activity of this reporter vector in BT-474 and SKBR3 cell lines and the activity of the ERBB2 promoter was further reduced by combining Ku siRNAs with AP-2 alpha and AP-2 gamma siRNAs. ChIP experiments with chromatin extracted from wild type or AP-2 alpha and AP-2 gamma or Ku70 siRNA transfected BT-474 cells demonstrated Ku70 recruitment to the ERBB2 proximal promoter in association with AP-2 alpha and AP-2 gamma. Moreover, Ku70 siRNA like AP-2 siRNAs, greatly reduced PolII recruitment to the ERBB2 proximal promoter. CONCLUSIONS: Ku proteins in interaction with AP-2 (alpha and gamma) contribute to increased ERBB2 mRNA and protein levels in breast cancer cells. [less ▲]

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See detailActivités de l'unité de Chimie Biologique Industrielle
Jacquet, Nicolas ULg; Paquot, Michel ULg

Speech/Talk (2009)

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See detailEtude chromatographique de substances volatiles: cas des sémiochimiques
Heuskin, Stéphanie ULg

Scientific conference (2009, November 10)

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See detailDiploma thesis presentation
Léonard, Grégoire ULg

Scientific conference (2009, November 09)

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See detailStudy of Carbon Fibre-Reinforced Magnesium Composites (Introduction to interfacial phenomenon)
Montrieux, Henri-Michel ULg; Lecomte-Beckers, Jacqueline ULg

Conference (2009, November 06)

Composite materials are known to combine interesting properties of different materials. This research concerns magnesium alloys reinforced by carbon fibres weaves. Such a material can theoretically ... [more ▼]

Composite materials are known to combine interesting properties of different materials. This research concerns magnesium alloys reinforced by carbon fibres weaves. Such a material can theoretically exhibit a yield strength/density ratio around 500 compared to ~200 for Ti6Al4V and ~125 for Al2024-T6. This composite is thought to be especially promising for aeronautics if interaction between fibres and magnesium can be controlled and optimized. The strategy studied to enhance interaction between matrix and fibres consists in covering a thin layer of carbide former metal (Zr, Ti) by PVD as a primary treatment of carbon weaves. This intermediate product can then be heated up between 300-700°C in an argon atmosphere in order to form stable carbides. The wetability of treated weaves by liquid magnesium is potentially higher because carbides are not fully covalent (partially metallic) and so they can have more interface interaction with liquid metals. Further crystal lattice parameters of particular carbides can be close to the ones of metal crystal lattices and interface energy can consequently be reduced when they form carbide-metal bonds. Furthermore magnesium is known for its high oxygen attraction and is able to reduce a lot metallic oxides. It is a key fact because liquid magnesium easy wets its oxide in certain conditions. [less ▲]

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See detailToepassingsgebiet ontwerpsoftware
Franssen, Jean-Marc ULg

Conference given outside the academic context (2009)

This Powerpoint presentation compares the results provided by the simple calculation model and the general calculation model for the calculation of the fire resistance of simple structural members ... [more ▼]

This Powerpoint presentation compares the results provided by the simple calculation model and the general calculation model for the calculation of the fire resistance of simple structural members subjected to fire. [less ▲]

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See detailProduction de viande - environnement : levons les équivoques !
Beckers, Yves ULg

Conference (2009, November 05)

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See detailCarcass chilling in large cattle from the Belgian Blue Breed : time-temperature evolution and recommendations
Collignon, Bertrand; Dehard, Sandrine; Clinquart, Antoine ULg

Poster (2009, November 05)

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See detailMai 68 : un héritage clivé
Frère, Bruno ULg

in Revue du MAUSS (2009)

Tout le monde aura entendu ou lu dans la presse la façon dont l'actuel président français, initiateur d'une révolution conservatrice sans précédent en France, fustige l'esprit de 68. L'on pourrait s ... [more ▼]

Tout le monde aura entendu ou lu dans la presse la façon dont l'actuel président français, initiateur d'une révolution conservatrice sans précédent en France, fustige l'esprit de 68. L'on pourrait s'amuser d'un tel positionnement campé par un politicien qui, par ailleurs, n'a guère rechigné à afficher le comportement amoureux léger qu'on lui connaît et que n'auraient pas désavoués les étudiant(e)s de mai lorsqu'ils étaient sur les barricades, aux prises avec le conservatisme français en matière de moeurs. Mais mon propos sera ici d'une autre nature, bien qu'il s'inscrive dans un étonnement similaire face aux diatribes de Nicolas Sarkozy. En effet, il est probablement un second élément qui rappelle ce dernier au souvenir de cette révolution dont il veut « liquider l'héritage » : la pensée économique « libertarienne », née, pour sa déclinaison française, de l'improbable union entre l'esprit frondeur et libertaire de 68 et l'économie de marché [less ▲]

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See detailA pyramidal classification of ST relationship models
Hallot, Pierre ULg; Billen, Roland ULg

in Van de Weghe, Nico; Gottfried, Björn; De Maeyer, Philippe (Eds.) et al Proceedings of the 3th Workshop on Behaviour Monitoring and Interpretation (2009, November 03)

Although intensive works have been devoted to spatiotemporal modeling during the last two decades, there are only a few models dedicated to relationships between two (or more) moving objects. This paper ... [more ▼]

Although intensive works have been devoted to spatiotemporal modeling during the last two decades, there are only a few models dedicated to relationships between two (or more) moving objects. This paper proposes a classification framework of spatiotemporal relationship models based on the ways spatiotemporal histories are analyzed. First, we discuss model conditions of application. Then we propose a classification of spatiotemporal relationship models based on a pyramidal representation of the quantity of extracted information, i.e. the nature and the complexity of provided information, from spatiotemporal histories. This classification aims helping users to choose adequate models for their purposes. The proposed spatiotemporal histories analysis method could lead to the development of new spatiotemporal relationship models. [less ▲]

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See detailModifications environnementales et migrations
Ozer, Pierre ULg

Conference given outside the academic context (2009)

Comment les changements climatiques bouleversent aujourd'hui la vie des réfugiés environnementaux et la nôtre demain. Situation, enjeux et perspectives. Afin d'approcher cette thématique complexe de ... [more ▼]

Comment les changements climatiques bouleversent aujourd'hui la vie des réfugiés environnementaux et la nôtre demain. Situation, enjeux et perspectives. Afin d'approcher cette thématique complexe de manière plurielle, des intervenants de multiples disciplines et de divers secteurs nous apporteront leur éclairage spécifique : Pierre Ozer, Docteur en Géographie, attaché au Département des Sciences et Gestion de l'Université de Liège. Jean-Pierre Jacques, avocat au Barreau de Liège, assistant en droit international à l'Université de Louvain, chargé de cours en droit international à l'HELMo. Eric Wynants, coordinateur de l'asbl Point d'Appui à Liège. François Gemenne, chercheur à l'Institut du développement durable et des relations internationales (IDDRI), maître de conférences à Sciences Po Paris et chercheur qualifié FNRS attaché au CEDEM (Centre d'études de l'ethnicité et des migrations - ULg). [less ▲]

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See detailLe développement de starters lactiques : de la cellule au produit fini
Thonart, Philippe ULg; Kouakou, P.; Dortu, C. et al

Conference (2009, November 02)

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See detailImpact of intercropping aphid-resistant wheat cultivars with oilseed rape
Zhou, Haibo ULg

in Acta Ecologica Sinica (2009), 29

The effects of intercropping of wheat cultivars and oilseed rape on the densities of wheat aphid, Sitobion avenae, and their arthropod natural enemies were evaluated. Three winter wheat cultivars with ... [more ▼]

The effects of intercropping of wheat cultivars and oilseed rape on the densities of wheat aphid, Sitobion avenae, and their arthropod natural enemies were evaluated. Three winter wheat cultivars with different resistant levels to S. avenae were used: `KOK¿ (high resistance), `Xiaobaidongmai¿ (low resistance) and`Hongmanghong¿ (susceptible). The results showed that the densities of S. avenae were significantly higher on the monoculture pattern than on either the 8-2 intercropping pattern (eight rows of wheat with two rows of oilseed rape) or the 8-4 intercropping pattern (eight rows of wheat with four rows of oilseed rape). The mean number of predators and the mummy rates of S. avenae were significantly higher in two intercropping patterns than those in the monoculture pattern. The densities of S. avenae, ladybeetles, and mummy rate of S. avenae were significantly different among different wheat cultivars. The highest densities of S. avenae and ladybeetles were found on wheat cultivar Hongmanghong. The lowest densities of S. avenae associated with high mummy rate of S. avenae were found on wheat cultivar Xiaobaidongmai. The results showed that wheat-oilseed rape intercropping conserved more predators and parasitoids than in wheat monoculture fields, and partial resistance of wheat cultivar Xiaobaidongmai had complementary or even synergistic effects on parasitoid of S. avenae. [less ▲]

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See detailUse of redworms (Perionyx excavatus) to manage agricultural wastes and supply valuable feed for poultry
Vu, Dinh Ton; Han Quang, Hanh ULg; Nguyen, Dinh Linh et al

in Livestock Research for Rural Development (2009), 21(number 11), 192

Perionyx excavatus, cultured in Vietnam in early 1990s, showed an important role in managing organic wastes and supplying a very nutritious feed for animals. To develop vermiculture in practice, four ... [more ▼]

Perionyx excavatus, cultured in Vietnam in early 1990s, showed an important role in managing organic wastes and supplying a very nutritious feed for animals. To develop vermiculture in practice, four treatments of different substrates including 100% fresh cattle manure (CM); cattle manure + pig manure in 50:50 ratio (CPM); cattle manure + pig manure + rice straw in 50:40:10 ratio (CPMRS) and pig manure + rice straw in 90:10 ratio (PMRS) were prepared to examine worms’ growth and their decomposition efficiency. All substrates were composted 45 days before feeding to worms. The result showed that cattle manure (CM) was the best substrate for worm growth (biomass gained 713 g after 45 days or 242.6% of growth rate). The worm biomass achieved in CPMRS and PMRS treatments was significantly lower than that in CM treatment. As compared to primary substrates, vermicomposts exhibited an excellent result with a great increase in the amount of total P (0.3 – 0.6%), total K (0.09 – 0.23%), Ca (0.51 – 0.79%) and a decrease in N-NH3 and N-NH4+. A study was carried out to evaluate the influence of feed supplemented with worms on the growth and meat quality of broiler chickens (n=148). Starting at 4 weeks old the chickens were divided into a control group and three experimental groups corresponding to worm levels in the diet of 1, 1.5 and 2% on a dry matter basis according to a completely randomized design. Chicken fed the diet supplemented with 2% worms had the highest live weight at 10 weeks (1925 g/head vs 1823 g/head for the control). Percentage of breast and leg meat was also higher than in the control group. Chickens in the three worm groups had better FCR. The different levels of red worm supplementation did not affect meat quality (pH, color, and the rate of dehydration after storage and processing). [less ▲]

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See detailHot stars observed by XMM-Newton. I. The catalog and the properties of OB stars
Nazé, Yaël ULg

in Astronomy and Astrophysics (2009), 506

Aims: Following the advent of increasingly sensitive X-ray observatories, deep observations of early-type stars became possible. However, the results for only a few objects or clusters have until now been ... [more ▼]

Aims: Following the advent of increasingly sensitive X-ray observatories, deep observations of early-type stars became possible. However, the results for only a few objects or clusters have until now been reported and there has been no large survey comparable to that based upon the ROSAT All-Sky Survey (RASS). <BR />Methods: A limited survey of X-ray sources, consisting of all public XMM-Newton observations (2XMMi) and slew survey data (XMMSL1), is now available. The X-ray counterparts to hot, massive stars have been searched for in these catalogs. <BR />Results: About 300 OB stars were detected with XMM-Newton. Half of them were bright enough for a spectral analysis to be possible, and we make available the detailed spectral properties that were derived. The X-ray spectra of O stars are represented well by low (<1 keV) temperature components and seem to indicate that an absorption column is present in addition to the interstellar contribution. The X-ray fluxes are well correlated with the bolometric fluxes, with a scatter comparable to that of the RASS studies and thus larger than found previously with XMM-Newton for some individual clusters. These results contrast with those of B stars that exhibit a large scatter in the L[SUB]X[/SUB] - L[SUB]BOL[/SUB] relation, no additional absorption being found, and the fits indicate a plasma at higher temperatures. Variability (either within one exposure or between multiple exposures) was also investigated whenever possible: short-term variations are far more rare than long-term ones (the former affects a few percent of the sample, while the latter concerns between one third and two thirds of the sources). <BR />Conclusions: This paper presents the results of the first high-sensitivity investigation of the overall high-energy properties of a sizable sample of hot stars. Based on observations collected with XMM-Newton, an ESA Science Mission with instruments and contributions directly funded by ESA Member States and the USA (NASA), and accessed via the 2XMMi and XMM slew survey catalogs. Tables 1 and 5 are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/506/1055 Postdoctoral Researcher FNRS. Visiting astronomer, UNAM-Morelos (Mexico). [less ▲]

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