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See detailL’apport d’une université au développement régional. Le cas de Liège
Merenne-Schoumaker, Bernadette ULg

in Mutations. Mémoires et perspectives du Bassin minier (2010), 2/2010

L’impact d’une université sur son territoire est étudié depuis près de 40 ans, les travaux se focalisant principalement sur les aspects économiques de cet impact et parfois sur la formation, la culture ... [more ▼]

L’impact d’une université sur son territoire est étudié depuis près de 40 ans, les travaux se focalisant principalement sur les aspects économiques de cet impact et parfois sur la formation, la culture, la santé ou encore l’image de marque. L'objectif de cet article est de mettre en évidence succinctement les problématiques et méthodologies de ces travaux, puis d'analyser le cas de l'Université de Liège [less ▲]

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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 ▲]

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See detailTowards calibration and characterization of high-energy beams using charged particle retrodiffusion on a double thin carbon foil system
Chene, Grégoire ULg; Mathis, François ULg; Dupuis, Thomas ULg et al

in Nuclear Instruments & Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms (2010), 268(11-12), 2015-2018

The cyclotron of the IPNAS-CEA laboratory of the University of Liege (Belgium) has built a new high-energy, high-resolution beam line based on the use of a pair of 900 bending magnets showing a energy ... [more ▼]

The cyclotron of the IPNAS-CEA laboratory of the University of Liege (Belgium) has built a new high-energy, high-resolution beam line based on the use of a pair of 900 bending magnets showing a energy resolution of Delta E = 1.9 +/- 0.4 keV comparable to that of electrostatic IBA installations. In the 6-20 MeV energy range the contribution of non-Rutherford events to scattering spectra became important and are not very well known. In order to improve our knowledge in that field, a new vacuum chamber especially dedicated to differential cross-section measurements has been constructed. First results obtained with the new set-up are presented. (C) 2010 Elsevier B.V. All rights reserved. [less ▲]

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See detailAn Oedometer for Studying Combined Effects of Temperature and Suction on Soils
François, Bertrand ULg; Laloui, Lyesse

in Geotechnical Testing Journal (2010), 33(2),

This paper reports the development of an advanced thermo-hydro-mechanical (THM) oedometer in order to characterize the behavior of soils under combined non-isothermal and unsaturated conditions. The ... [more ▼]

This paper reports the development of an advanced thermo-hydro-mechanical (THM) oedometer in order to characterize the behavior of soils under combined non-isothermal and unsaturated conditions. The simultaneous control of temperature, suction, and stress states within the sample required rigorous calibration. This THM oedometer accommodates samples 80 mm in diameter and 23 mm in height. The applied vertical stresses can reach values of up to 1 MPa, the controlled temperature ranges from 20 to 80°C, and the applied suction is up to 500 kPa. The paper thoroughly discusses the calibration of the device and presents some results of tests performed on sandy silt. [less ▲]

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See detailA walk from multifractal analysis to functional analysis with S\nu, and back
Aubry, Jean-Marie ULg; Bastin, Françoise ULg

in Barral J; Seuret S. (Ed.) Proceedings of ''Fractals and Related Fields'', Monastir, September 2007 (2010)

With the S\nu spaces introduced by Jaffard in the context of multifractal analysis to extend the Besov spaces environment, functional analysis received a gift from concrete applications. These spaces led ... [more ▼]

With the S\nu spaces introduced by Jaffard in the context of multifractal analysis to extend the Besov spaces environment, functional analysis received a gift from concrete applications. These spaces led to new results in multifractal analysis, but also brought concrete objects to study as new examples by the typical various tools and aspects of functional analysis, with hope to provide some new points of view from which to consider multifractal analysis questions. [less ▲]

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See detailMarker imputation with low-density marker panels in Dutch Holstein cattle.
Zhang, Zhiyan; Druet, Tom ULg

in Journal of Dairy Science (2010), 93(11), 5487-94

The availability of high-density bovine genotyping arrays made implementation of genomic selection possible in dairy cattle. Development of low-density single nucleotide polymorphism (SNP) panels will ... [more ▼]

The availability of high-density bovine genotyping arrays made implementation of genomic selection possible in dairy cattle. Development of low-density single nucleotide polymorphism (SNP) panels will allow the extension of genomic selection to a larger portion of the population. Prediction of ungenotyped markers, called imputation, is a strategy that allows using the same low-density chips for all traits (and for different breeds). In the present study, we evaluated the accuracy of imputation with low-density genotyping arrays in the Dutch Holstein population. Five different sizes of genotyping arrays were tested, from 384 to 6,000 SNP. According to marker density, the overall allelic imputation error rate obtained with the program DAGPHASE, which relies on linkage disequilibrium and linkage, ranged from 11.7 to 2.0%, and that obtained with the program CHROMIBD, which relies on linkage and the set of all genotyped ancestors, ranged from 10.7 to 3.3%. However, imputation efficiency was influenced by the relationship between low-density and high-density genotyped animals. Animals with both parents genotyped had particularly low imputation error rates: <1% with 1,500 SNP or more. In summary, missing marker alleles can be predicted with 3 to 4% errors with approximately 1 SNP/Mb (approximately 3,000 markers). The CHROMIBD program proved more efficient than DAGPHASE only at lower marker densities or when several genotyped ancestors were available. Future studies are required to measure the effect of these imputation error rates on accuracy of genomic selection with low-density SNP panels. [less ▲]

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See detailThe IMA-CNMNC dominant-constituent rule revisited and extended
Hatert, Frédéric ULg; Burke, Ernst

in Elements (2010), 6

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See detailImputation of genotypes from different single nucleotide polymorphism panels in dairy cattle.
Druet, Tom ULg; Schrooten, C.; de Roos, A. P. W.

in Journal of Dairy Science (2010), 93(11), 5443-54

Imputation of missing genotypes is important to join data from animals genotyped on different single nucleotide polymorphism (SNP) panels. Because of the evolution of available technologies, economical ... [more ▼]

Imputation of missing genotypes is important to join data from animals genotyped on different single nucleotide polymorphism (SNP) panels. Because of the evolution of available technologies, economical reasons, or coexistence of several products from competing organizations, animals might be genotyped for different SNP chips. Combined analysis of all the data increases accuracy of genomic selection or fine-mapping precision. In the present study, real data from 4,738 Dutch Holstein animals genotyped with custom-made 60K Illumina panels (Illumina, San Diego, CA) were used to mimic imputation of genotypes between 2 SNP panels of approximately 27,500 markers each and with 9,265 SNP markers in common. Imputation efficiency increased with number of reference animals (genotyped for both chips), when animals genotyped on a single chip were included in the training data, with regional higher marker densities, with greater distance to chromosome ends, and with a closer relationship between imputed and reference animals. With 0 to 2,000 animals genotyped for both chips, the mean imputation error rate ranged from 2.774 to 0.415% and accuracy ranged from 0.81 to 0.96. Then, imputation was applied in the Dutch Holstein population to predict alleles from markers of the Illumina Bovine SNP50 chip with markers from a custom-made 60K Illumina panel. A cross-validation study performed on 102 bulls indicated that the mean error rate per bull was approximately equal to 1.0%. This study showed the feasibility to impute markers in dairy cattle with the current marker panels and with error rates below 1%. [less ▲]

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See detailMicrosatellite primers in the Peltigera dolichorhiza complex (lichenized ascomycete, Peltigerales
Magain, Nicolas ULg; Forrest, Laura L.; Sérusiaux, Emmanuël ULg et al

in American Journal of Botany (2010), 97

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See detail@u monde, citoyen !
Jadoulle, Jean-Louis ULg

Book published by Didier Hatier (2010)

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See detailDéveloppement d'un modèle tertiaire pour la prédiction de la croissance de Listeria monocytogenes et Salmonella spp. dans la viande hachée de porc
Delhalle, Laurent ULg; Adolphe, Ysabelle ULg; Jasick, Adeline ULg et al

in Viandes et Produits Carnés (2010), Hors-série

Tertiary models are proposed in order to predict the growth of Listeria monocytogenes and Salmonella spp. in pork minced meat packaged under stretch film. The models have been calculated from challenge ... [more ▼]

Tertiary models are proposed in order to predict the growth of Listeria monocytogenes and Salmonella spp. in pork minced meat packaged under stretch film. The models have been calculated from challenge-tests at 8°C (L. monocytogenes) and 12°C (Salmonella), the meat being artificially contaminated at 2 log cfu pathogen/g. In a second step, they have been validated at 5, 8 and 10°C for L. monocytogenes (r² : 0.94, 0.98 and 0.95) and 8, 10 and 12°C for Salmonella (r³ : 0.80, 0.92 and 0.98). [less ▲]

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See detailNumerical simulation of two-dimensional and three-dimensional axisymmetric advection-diffusion systems with complex geometries using finite-volume methods
Ashbourn, J. M. A.; Geris, Liesbet ULg; Gerisch, A. et al

in Proceedings : Mathematical, Physical & Engineering Sciences (2010), 466(2118), 1621-1643

A finite-volume method has been developed that can deal accurately with complicated, curved boundaries for both two-dimensional and three-dimensional axisymmetric advection-diffusion systems. The ... [more ▼]

A finite-volume method has been developed that can deal accurately with complicated, curved boundaries for both two-dimensional and three-dimensional axisymmetric advection-diffusion systems. The motivation behind this is threefold. Firstly, the ability to model the correct geometry of a situation yields more accurate results. Secondly, smooth geometries eliminate corner singularities in the calculation of, for example, mechanical variables and thirdly, different geometries can be tested for experimental applications. An example illustrating each of these is given: fluid carrying a dye and rotating in an annulus, bone fracture healing in mice, and using vessels of different geometry in an ultracentrifuge. [less ▲]

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See detailExperimental investigation of the effect of flip bucket splitters on plunge pool geometry
Erpicum, Sébastien ULg; Archambeau, Pierre ULg; Dewals, Benjamin ULg et al

in Wasserwirtschaft (2010), 4

Flip buckets are common hydraulic structures aiming at deflecting high velocity flows to a free jet trajectory. Systematic experimental tests have been performed to assess the influence on energy ... [more ▼]

Flip buckets are common hydraulic structures aiming at deflecting high velocity flows to a free jet trajectory. Systematic experimental tests have been performed to assess the influence on energy dissipation and the plunge pool geometry of varied repartitions of splitters along the flip bucket width. In particular, it is shown that some configurations can create more erosion than a continuous channel without flip bucket. [less ▲]

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See detailFilles et garçons face à l'orientation scientifique : stéréotypes en tout genre
Goffin, Christelle ULg; Quittre, Valérie ULg; Lafontaine, Dominique ULg

in Gavray, Claire; Adriaenssens, Alexandra (Eds.) Une fille = un garçon ? Identifier les inégalités de genre à l'école pour mieux les combattre (2010)

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See detailUnified description of fission in fusion and spallation reactions
Mancusi, Davide ULg; Charity, R. J.; Cugnon, Joseph ULg

in Physical Review. C : Nuclear Physics (2010), 82

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