References of "2010"
     in
Bookmark and Share    
Full Text
See detailHow bright is the Io UV footprint?
Bonfond, Bertrand ULg; Grodent, Denis ULg; Gérard, Jean-Claude ULg et al

Conference (2010)

The electro-magnetic interaction between Io and the Jovian magnetosphere generates a perturbation in the magnetospheric plasma which propagates along the magnetic field lines and creates auroral footprint ... [more ▼]

The electro-magnetic interaction between Io and the Jovian magnetosphere generates a perturbation in the magnetospheric plasma which propagates along the magnetic field lines and creates auroral footprint emissions in both hemispheres. Recent results showed that this footprint is formed of several spots and an extended tail. Each feature is suggested to correspond to a different step in the propagation of the perturbation and in the electron energization processes. The present study focuses on the variations of the spots' brightness at different timescales from minutes to years through the rotation period of Jupiter. It relies on FUV images acquired with the STIS and ACS instruments onboard the Hubble Space Telescope. Since the footprint is composed of several localized features, a good understanding of the emission region geometry is critical to derive the actual vertical brightness and thus the precipitated energy flux. We developed a 3D emission model in order to assess as precisely as possible the respective contribution of each individual feature and to correctly estimate the precipitating energy flux. As far as the brightness variations on timescales of minutes are concerned, we will present results from the high time resolution campaign executed during summer 2009. On timescale of several hours, we will show that the variation of the emitted power as a function of the location of Io in the plasma torus suggests that the Jovian surface magnetic field strength is an important controlling parameter. Finally, the measured precipitated power and particle fluxes will be discussed in comparison with recent simulations considering both Alfvén waves filamentation and electron acceleration when the Alfvén waves become inertial. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailKnock-down of the COX3 and COX17 gene expression of cytochrome c oxidase in the unicellular green alga Chlamydomonas reinhardtii.
Remacle, Claire ULg; Coosemans, Nadine ULg; Jans, Frédéric ULg et al

in Plant Molecular Biology (2010), 74(3), 223-2363

The COX3 gene encodes a core subunit of mitochondrial cytochrome c oxidase (complex IV) whereas the COX17 gene encodes a chaperone delivering copper to the enzyme. Mutants of these two genes were isolated ... [more ▼]

The COX3 gene encodes a core subunit of mitochondrial cytochrome c oxidase (complex IV) whereas the COX17 gene encodes a chaperone delivering copper to the enzyme. Mutants of these two genes were isolated by RNA interference in the microalga Chlamydomonas. The COX3 mRNA was completely lacking in the cox3-RNAi mutant and no activity and assembly of complex IV were detected. The cox17-RNAi mutant presented a reduced level of COX17 mRNA, a reduced activity of the cytochrome c oxidase but no modification of its amount. The cox3-RNAi mutant had only 40% of the wild-type rate of dark respiration which was cyanide-insensitive. The mutant presented a 60% decrease of H(2)O(2) production in the dark compared to wild type, which probably accounts for a reduced electron leakage by respiratory complexes III and IV. In contrast, the cox17-RNAi mutant showed no modification of respiration and of H(2)O(2) production in the dark but a two to threefold increase of H(2)O(2) in the light compared to wild type and the cox3-RNAi mutant. The cox17-RNAi mutant was more sensitive to cadmium than the wild-type and cox3-RNAi strains. This suggested that besides its role in complex IV assembly, Cox17 could have additional functions in the cell such as metal detoxification or Reactive Oxygen Species protection or signaling. Concerning Cox3, its role in Chlamydomonas complex IV is similar to that of other eukaryotes although this subunit is encoded in the nuclear genome in the alga contrary to the situation found in all other organisms. [less ▲]

Detailed reference viewed: 41 (12 ULg)
Full Text
See detailCritical analysis of the WORLDNET freight flow matrices
Chevalier, Simon; Limbourg, Sabine ULg

E-print/Working paper (2010)

The growing trade between Europe and the rest of the world and the enlargement of the European Union has led the European Commission’s Directorate-General for Energy and Transport to fund Worldnet – ... [more ▼]

The growing trade between Europe and the rest of the world and the enlargement of the European Union has led the European Commission’s Directorate-General for Energy and Transport to fund Worldnet – Worldwide Cargo Flows – within the Framework 6 research project under the Scientific Support to Policies initiative. The main outputs have been an extended freight origin-destination database for the year 2005, extended road and rail networks, and new maritime and air-cargo networks. Moreover, these outputs were developed according to TRANSTOOLS (Tools for TRansport forecasting ANd Scenario testing) specifications. Due to the magnitude of the project and to the consequences that its results could generate in transportation planning at European level, this study assesses the validity of the freight origin-destination matrix. Our analysis indicates multiple problem cases, inconsistencies and aberrations. [less ▲]

Detailed reference viewed: 67 (4 ULg)
Full Text
Peer Reviewed
See detailGlucosamine sulphate in the treatment of knee osteoarthritis: cost-effectiveness comparison with paracetamol.
Scholtissen, S.; Bruyère, Olivier ULg; Neuprez, A. et al

in International Journal of Clinical Practice (2010), 64(6), 756-62

INTRODUCTION: The aim of this study was to explore the cost-effectiveness of glucosamine sulphate (GS) compared with paracetamol and placebo (PBO) in the treatment of knee osteoarthritis. For this purpose ... [more ▼]

INTRODUCTION: The aim of this study was to explore the cost-effectiveness of glucosamine sulphate (GS) compared with paracetamol and placebo (PBO) in the treatment of knee osteoarthritis. For this purpose, a 6-month time horizon and a health care perspective was used. MATERIAL AND METHODS: The cost and effectiveness data were derived from Western Ontario and McMaster Universities Osteoarthritis Index data of the Glucosamine Unum In Die (once-a-day) Efficacy trial study by Herrero-Beaumont et al. Clinical effectiveness was converted into utility scores to allow for the computation of cost per quality-adjusted life year (QALY) For the three treatment arms Incremental Cost-Effectiveness Ratio were calculated and statistical uncertainty was explored using a bootstrap simulation. RESULTS: In terms of mean utility score at baseline, 3 and 6 months, no statistically significant difference was observed between the three groups. When considering the mean utility score changes from baseline to 3 and 6 months, no difference was observed in the first case but there was a statistically significant difference from baseline to 6 months with a p-value of 0.047. When comparing GS with paracetamol, the mean baseline incremental cost-effectiveness ratio (ICER) was dominant and the mean ICER after bootstrapping was -1376 euro/QALY indicating dominance (with 79% probability). When comparing GS with PBO, the mean baseline and after bootstrapping ICER were 3617.47 and 4285 euro/QALY, respectively. CONCLUSION: The results of the present cost-effectiveness analysis suggested that GS is a highly cost-effective therapy alternative compared with paracetamol and PBO to treat patients diagnosed with primary knee OA. [less ▲]

Detailed reference viewed: 59 (11 ULg)
Peer Reviewed
See detailCO2 valorization by means of dielectric barrier discharge
Machrafi, Hatim ULg; Cavadias, S.; Amouroux, J.

(2010)

In order to reduce atmospheric pollution by CO2 (by transport and industrial applications), CO2 can be used as a source, instead of stocking it as a product. The case considered is the reaction between ... [more ▼]

In order to reduce atmospheric pollution by CO2 (by transport and industrial applications), CO2 can be used as a source, instead of stocking it as a product. The case considered is the reaction between CO2 and methane producing hydrogen: CO2 + CH4 2 CO + 2 H2 H° = 258.9 kJ/mole. The activation barrier of this endothermic reaction needs to be surpassed. The method of Dielectric Barrier Discharge (DBD) can be used, needing less energy than heating or catalytic pyrolysis. The process relies on the collision of electrons (forming reactive species), accelerated under an electrical field in the discharge area, facilitating the abovementioned reaction. The first step of the simulation in this work presents a 1D model in Matlab (Poisson equation, conservation of electrons and ions), obtaining an average electron and ion density. This is then introduced in a kinetic model of CH4/CO2 dissociation via electron collisions in the discharge region (Reaction Engineering module in COMSOL). Then COMSOL (continuity and Navier- Stokes equations) is used to model the flow in the post-discharge phase (reactions between vibrationally excited CO2 and CH4). Preliminary calculations for a plasma reactor model show that when the reactor wall is heated at 1000K, without electrical discharge, the decomposition of CO2 is 7.5%. With electrical discharge, the same decomposition is attained at a lower temperature, namely 880K. [less ▲]

Detailed reference viewed: 47 (7 ULg)
Full Text
Peer Reviewed
See detailSemantic Hyperpriming in Normal Aging: A Consequence of Instructions?
Stefaniak, Nicolas ULg; Meulemans, Thierry ULg; Willems, Sylvie ULg

in Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition (2010), 17(5), 615-632

Semantic hyperpriming has consistently been found in normal aging. However, <br />because the standard instructions to test semantic priming are generally ambiguous <br />(focusing on both accuracy and ... [more ▼]

Semantic hyperpriming has consistently been found in normal aging. However, <br />because the standard instructions to test semantic priming are generally ambiguous <br />(focusing on both accuracy and speed), it is difficult to account for hyperpriming in <br />older adults. By using the direct and mediated priming paradigms, this study investigates <br />whether older adults’ response mode at testing may explain hyperpriming. First, we <br />show that, under identical conditions, inducing a response mode that favors speed leads <br />to greater priming effects in older adults. The pattern of results is similar to what is <br />observed under standard instructions. Second, prompting a response mode that favors <br />accuracy leads to greater priming effects in younger adults. We discuss various explanations <br />for these findings and conclude, in accordance with the Ratcliff, Thapar, <br />Gomez, and McKoon (2004a) diffusion model, that hyperpriming in normal aging is <br />contingent on older adults’ response mode at testing. [less ▲]

Detailed reference viewed: 56 (7 ULg)
Full Text
Peer Reviewed
See detailStéréotypes prescriptifs et avantages des groupes dominants
Delacollette, Nathalie ULg; Dardenne, Benoît ULg; Dumont, Muriel ULg

in Année Psychologique (L') (2010), 110

The prescriptive component of stereotypes is defined as a set of beliefs about the characteristics group members should possess. It has mainly been studied regarding gender stereotypes. We believe that ... [more ▼]

The prescriptive component of stereotypes is defined as a set of beliefs about the characteristics group members should possess. It has mainly been studied regarding gender stereotypes. We believe that the main function of this prescriptive component is to allow dominant group members to maintain subordinate group members in an advantageous position for themselves. To illustrate our proposal, we present several theoretical and empirical papers, showing that the relative status of social groups is a determinant of which characteristics are prescribed to the members of these groups; that subordinates who fail to conform to the prescription are sanctioned; and that dominants prescribe to subordinates characteristics they see as beneficial to their own group. [less ▲]

Detailed reference viewed: 75 (11 ULg)
Full Text
Peer Reviewed
See detailModeling Microbial Cross-contamination in Quick Service Restaurants by Means of Experimental Simulations With Bacillus Spores
Baptista Rodrigues, Ana Lúcia ULg; Crevecoeur, Sébastien ULg; Dure, Remi et al

Poster (2010)

Cross contamination has been frequently mentioned as being in the origin of a wide range of food borne outbreaks. Handling of food is one of the ways through which cross contamination may occur. For many ... [more ▼]

Cross contamination has been frequently mentioned as being in the origin of a wide range of food borne outbreaks. Handling of food is one of the ways through which cross contamination may occur. For many different reasons, quick service restaurants are particularly at risk. Due to its importance, cross contamination via the hands should be taken into consideration when carrying out a quantitative risk assessment. The main goal of this study was to determine transfer rates of bacteria to and via the hands, reduction rates of two hand sanitizing procedures and to apply the results to a quantitative microbial risk assessment model. According to our results, handling of a portion of raw minced meat contaminated at 4.104 cfu leads to the presence of 24 cfu on both hands, 3 cfu on ready-to-eat product (RTE) manipulated with unwashed hands, 1 cfu on RTE manipulated with wiped hands and absence on RTE manipulated with washed hands. This study provides adequate quantitative data for quantitative microbial risk assessment. [less ▲]

Detailed reference viewed: 51 (4 ULg)
See detailLes contours de l'entreprise sociale
Marée, Michel ULg; Mertens de Wilmars, Sybille ULg

in Mertens de Wilmars, Sybille (Ed.) La gestion des entreprises sociales (2010)

Ce chapitre décrit d'abord successivement les éléments fondateurs du concept d'entreprise sociale, en précisant en quoi ce type d'entreprise constitue un "choix d'entreprendre" différent. Il passe ensuite ... [more ▼]

Ce chapitre décrit d'abord successivement les éléments fondateurs du concept d'entreprise sociale, en précisant en quoi ce type d'entreprise constitue un "choix d'entreprendre" différent. Il passe ensuite en revue les formes juridiques choisies par les entreprises sociales et donne un aperçu statistique de leur poids dans l'économie belge. Il présente également les grandes finalités qu'elles poursuivent et le modèle d'entreprise qu'elles mettent en oeuvre. Enfin, il énonce les questions de gestion que pose a priori ce modèle d'entreprise. [less ▲]

Detailed reference viewed: 264 (20 ULg)
Full Text
Peer Reviewed
See detailLa délivrance du car-pass: condition de validité du contrat de vente d'un véhicule d'occasion?
Loly, Jessica ULg; Biquet, Christine ULg

in Journal des Juges de Paix = Tijdschrift van de Vrederecters (2010), 9-10

Detailed reference viewed: 14 (4 ULg)
Full Text
Peer Reviewed
See detailBande dessinée alternative : mémoire et re-génération. Autour de l'exposition "Alternatif Chaos. Onafhankelijk Beeldverhaal in Wallonië en Brussel"
Dejasse, Erwin ULg

in Textyles : Revue des Lettres Belges de Langue Française (2010), 36-37

The article deals about the exhibition "Alternative Chaos" that took place in 2008 in Haarlem -Netherland whom I was the curator. I've tried to analyse it retrospectively. This exhibition was devoted to ... [more ▼]

The article deals about the exhibition "Alternative Chaos" that took place in 2008 in Haarlem -Netherland whom I was the curator. I've tried to analyse it retrospectively. This exhibition was devoted to the alternative scene of Comics in French speaking Belgium between 1988 and 2008. [less ▲]

Detailed reference viewed: 47 (10 ULg)
Full Text
Peer Reviewed
See detailPreliminary experiments: High-energy alpha PIXE in archaeometry
Dupuis, Thomas ULg; Chene, Grégoire ULg; Mathis, François ULg et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2010), 268(11-12), 1911-1915

This paper describes the work realized at the "Centre Europeen d'Archeometrie" to highlight the utility of high-energy alpha PIXE in the particular field of archaeometry and to introduce the developments ... [more ▼]

This paper describes the work realized at the "Centre Europeen d'Archeometrie" to highlight the utility of high-energy alpha PIXE in the particular field of archaeometry and to introduce the developments done and to be clone to complete the knowledge of high-energy alpha PIXE. It starts with the comparison of the yield and the noise background between several alpha particle beams and the comparison between alpha particle and proton beams on different thick and thin references. After, this paper depicts the developments done at the "Institut de Physique Nucleaire, Atomique et Spectroscopie" to perform such high-energy experiments, first on standards and later on cultural heritage objects. Moreover, it introduces the problematics of such beams for the quantification in PIXE by the intermediary of the knowledge of the ionization and X-ray production cross-sections and also the developments done to answer to this serious lack in the databases. (C) 2010 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 42 (3 ULg)
Full Text
Peer Reviewed
See detailEvaluation of a set of E. coli reporter strains as physiological tracer for estimating bioreactor hydrodynamic efficiency
Delvigne, Frank ULg; Ingels, Sophie; Thonart, Philippe ULg

in Process Biochemistry (2010), 45(11), 1769-1778

A set of different green fluorescent protein (GFP) Escherichia coli reporter strains have been evaluated in mini- and stirred bioreactors operating in fed-batch mode with different degrees of ... [more ▼]

A set of different green fluorescent protein (GFP) Escherichia coli reporter strains have been evaluated in mini- and stirred bioreactors operating in fed-batch mode with different degrees of perturbations in order to estimate their potential use as process-related stress biosensor. The mini-bioreactor platform comprises a set of parallel shake flasks operating in fed-batch mode. The advantage of this system is its high experimental throughput for the evaluation of the GFP synthesis capacity of our reporter strains. In the case of classical shake flask system, no significant evolution of GFP synthesis have been observed, considering the reduced microbial growth period allowed by the system, whereas in the case of fed-batch operated mini-bioreactors, evolution of GFP synthesis, as well as GFP distribution among the microbial population, has been observed for three preselected strains (prpoS, puspA and posmC::gfp). More interestingly, a binary mode of expression has been observed in the case of the cultures carried out with the reporter strains for which GFP synthesis is under the control of the rpoS promoter which is induced under carbon limitation conditions. However, the generation of controlled glucose perturbations is relatively limited in this system and, in a second step fully automated bioreactor with a sclae-down strategy has been used to correlate the response of a prpoS::gfp strains with extracellular glucose perturbations. In the case of the culture performed in perturbed bioreactor (glucose intermittent feeding or glucose addition at the level of the recycle loop of a two-compartment scale-down bioreactor), the slowdown of the GFP synthesis resulting in the observation of a binary repartition of GFP content among the microbial population, has been observed. This observation led to the conclusion that the prpoS::gfp can be used as a biosensor for the validation of a fed-batch profile in industrial-scale bioreactors. [less ▲]

Detailed reference viewed: 25 (8 ULg)
Full Text
See detailLe Codex de Niketas et la médecine byzantine
Marganne, Marie-Hélène ULg

in Bernabo, Massimo (Ed.) La collezione di testi chirurgici di Niceta. Firenze, Biblioteca Medicea Laurenziana, Plut. 74.7. Tradizione Medica Classica a Bisanzio (2010)

The Codex of Nikétas (Laurentianus pluteus graecus 74, 7, IXex./Xin.), which contains a collection of sixteen classic papers of surgery covering a period of more thousand years, from Hippocrates (Vex ... [more ▼]

The Codex of Nikétas (Laurentianus pluteus graecus 74, 7, IXex./Xin.), which contains a collection of sixteen classic papers of surgery covering a period of more thousand years, from Hippocrates (Vex./IVin. BC) to Paulus Aegineta (A.D. VII) is exceptional by its age, presentation, conception, magnificent illustration and history. A new examination of the support, writing, contents, as well as of the cultural context, allows to understand better the criteria of selection of the papers, their organization and the pursued objectives, particularly in the treatment of bone and joint diseases. [less ▲]

Detailed reference viewed: 149 (8 ULg)
See detailDetection and quantification of non-linear dynamic behaviour of space structures
Hot, A.; Kerschen, Gaëtan ULg; Cogan, S. et al

in 28th International Modal Analysis Conference, Jacksonville, 2010 (2010)

Detailed reference viewed: 22 (1 ULg)
Full Text
Peer Reviewed
See detailFrom a bouncing compound drop to a double emulsion
Terwagne, Denis ULg; Gilet, Tristan ULg; Vandewalle, Nicolas ULg et al

in Langmuir (2010), 26(14), 11680

We show that a double emulsion (oil in water in oil) can be created starting from a compound droplet (surfactant solution in oil). The compound drop bounces on a vertically vibrated liquid surface. When ... [more ▼]

We show that a double emulsion (oil in water in oil) can be created starting from a compound droplet (surfactant solution in oil). The compound drop bounces on a vertically vibrated liquid surface. When the amplitude of the vibration exceeds a threshold value, the oil layer penetrates the water content and leaves a tiny oil droplet within. As this phenomenon occurs at each vigorous impact, the compound drop progressively transforms into a double emulsion. The emulsification threshold, which is observed to depend on the forcing frequency but not on the drop size, is rationalized by investigating the impact of compound drops onto a static liquid surface. The droplet creation occurs when the kinetic energy released at impact is larger than the energy required to deform the compound drop, namely when the Weber number is higher than a given threshold value. [less ▲]

Detailed reference viewed: 52 (28 ULg)
Full Text
Peer Reviewed
See detailGramaccioliite-(Y): paragenesis, chemical, structural, thermal expansion, and compressibility data on a new occurrence from Samos Island, Greece
Theye, Thomas; Hatert, Frédéric ULg; Ockenga, E. et al

in European Journal of Mineralogy (2010), 22

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailL'assurance obligatoire des architectes et la jurisprudence de la Cour constitutionnelle. Vers une réforme de l'assurance en droit de la construction?
Kohl, Benoît ULg

in Durant, I.; de Briey, R. (Eds.) L'exercice de la profession d'architecte (2010)

Le débat sur l’assurance dans le secteur de la construction s’est trouvé sérieusement relancé à la suite de l’arrêt prononcé par la Cour constitutionnelle le 12 juillet 2007 . Cette décision constitue la ... [more ▼]

Le débat sur l’assurance dans le secteur de la construction s’est trouvé sérieusement relancé à la suite de l’arrêt prononcé par la Cour constitutionnelle le 12 juillet 2007 . Cette décision constitue la toile de fond de toute réflexion, non seulement quant au caractère – obligatoire ou facultatif – de l’assurance dans ce secteur, mais également quant aux contours que ce régime devrait adopter. Certaines initiatives ont du reste été déjà entreprises pour donner corps à un réforme du régime actuel ; une proposition de loi « relative à l’assurance responsabilité professionnelle des entrepreneurs de travaux immobiliers » vient ainsi d’être déposée très récemment au Sénat . La présente contribution fait le point sur cette question sensible. Après une analyse de l’arrêt du 12 juillet 2007, l'étude dégage les enseignements de cette décision du point de vue du devenir de l’assurance dans le secteur de la construction en droit belge. Enfin, quelques propositions pour une réforme du régime actuel sont formulées, et sont illustrées par un bref examen comparatif de la situation existant dans d’autres Etats membres de l’Union Européenne. [less ▲]

Detailed reference viewed: 116 (13 ULg)