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See detailIn vitro hemocompatibility assessment of Near-IR-Emitting Ag2S Quantum Dots (QD)
Grandfils, Christian ULg; Hocaoglu, I.; Demir, F. et al

in Proceeding of the Nanobiotechnology International Workshop (2014, November 26)

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See detailPrésentation de Chr. Puren et mise en perspective de sa conférence
Simons, Germain ULg

Speech/Talk (2014)

Brève introduction de la conférence de Chr. Puren intitulée "Genre, CECRL et perspective de l'agir social". Chr. Puren a d'abord été brièvement présenté, puis la problématique des "genres textuels" dans ... [more ▼]

Brève introduction de la conférence de Chr. Puren intitulée "Genre, CECRL et perspective de l'agir social". Chr. Puren a d'abord été brièvement présenté, puis la problématique des "genres textuels" dans le CECRL a été mise en perspective et reliée aux deux journées d'études "Questions de genres" organisées en avril 2014 par l'Entité de recherche structurelle Langues et littératures modernes. [less ▲]

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See detailUse of 13C-NMR in structural elucidation of polysaccharides: case of locust bean gum
Gillet, Sébastien ULg; Aguedo, Mario ULg; Blecker, Christophe ULg et al

Poster (2014, November 25)

Locust bean gum (LBG) galactomannans are polysaccharides consisting of a β-(1→4) D-mannopyranosyl backbone substituted to varying degrees in α-(1→6) with single D-galactopyranosyl residues. This basic ... [more ▼]

Locust bean gum (LBG) galactomannans are polysaccharides consisting of a β-(1→4) D-mannopyranosyl backbone substituted to varying degrees in α-(1→6) with single D-galactopyranosyl residues. This basic structure is the same for all galactomannans (Fig. 2). However, when locust bean gum is extracted at different temperatures, the generated fractions exhibit different properties in aqueous solution (viscosity, viscoelasticity, gel formation, thermohydrolysis resistance, etc.). This means that there are differences within the fine structure of the polymers (although the basic structure is the same). Analysis of [13C]-NMR spectra of galactomannans, in combination with other techniques, can provide capital information about fine structural elucidation of the polymers. The method specifies the distribution of lateral galactosyls along the main chain of mannans. Two fractions extracted from locust bean gum at 25 and 80 °C (respectively GM25 and GM80) were comparatively studied by [13C]-NMR. Mannosyls/Galactosyls (M/G) ratios can be determined by considering the intensities of C-1 mannose and galactose signals in [13C]-NMR spectra. This method provides results relatively close to those obtained by GC-MS analysis. Spectra also showed that resonance from C4 of D-mannose residues were split, in evident dependence upon the nearest-neighbor probabilities (“diad frequencies”) of D-galactosyl groups along the mannan chains (Fig. 2). Diad frequencies were obtained by integrating C4(Man) peak areas. F11, F21/F12 and F22 gave respectively the di-, mono- or non-substituted mannose pairs proportions. High percentages of F11 and F22 therefore indicate a more non-homogeneous distribution of lateral galactosyls along the polysaccharide backbone as observed for GM80. The percentages of total lateral substituents obtained by C4(Man) peak analysis [F11 + (F21 or F12)/2] were fairly well correlated with M/G ratios. Splitting of the C-6 substituted D-mannose resonance provides, therefore the basis for determining the next-nearest-neighbor probabilities (triad frequencies) (Fig. 2). However, the spectrum is often not sufficiently resolved to accurately quantify and interpret the results. [less ▲]

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See detailGuides d'architecture moderne et contemporaine en Wallonie et à Bruxelles
Charlier, Sébastien ULg; Moor, Thomas

Conference (2014, November 25)

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See detailEgyptian Gods in Graeco-Roman Context. II. Playing, singing and dancing for Isis.
Veymiers, Richard ULg

Scientific conference (2014, November 25)

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See detailProgramming self assembly by designing the 3D shape of floating objects
Poty, Martin ULg; Lagubeau, Guillaume ULg; Lumay, Geoffroy ULg et al

Conference (2014, November 25)

Self-assembly of floating particles driven by capillary forces at some liquid-air interface leads to the formation of two-dimensionnal structures. Using a 3d printer, milimeter scale objets are produced ... [more ▼]

Self-assembly of floating particles driven by capillary forces at some liquid-air interface leads to the formation of two-dimensionnal structures. Using a 3d printer, milimeter scale objets are produced. Their 3d shape is chosen in order to create capillary multipoles. The capillary interactions between these components can be either attractive or repulsive depending on the interface local deformations along the liquid-air interface. In order to understand how the shape of an object deforms the interface, we developed an original profilometry method. The measurements show that specific structures can be programmed by selecting the 3d branched shapes. [less ▲]

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See detailPENSANDO LA CIUDAD SOSTENIBLE MÁS ALLÁ DE LA DICOTOMÍA ECOLOGÍA URBANA Y MEDIOAMBIENTE URBANO: EL CASO DE LA GOBERNANZA DEL AGUA EN COCHABAMBA
Cabrera Quispe, Juan Edson ULg; Farah, Jihad ULg

Conference (2014, November 24)

In this article, we go back on two ways of taking into account the environmental dimension in urban planning and governance. We stress the difficult articulation between these two approaches – “urban ... [more ▼]

In this article, we go back on two ways of taking into account the environmental dimension in urban planning and governance. We stress the difficult articulation between these two approaches – “urban ecology” and “urban environment” – and the actual impasse the discipline of urban planning finds itself in in its quest of the sustainable city. These two approaches for acting on the city by considering the complexity of its milieu build on different representations of this milieu and different modes of action legitimation. Negating each other, they can difficultly coexist, even less articulate. Through the example of water management in Cochabamba, we stress the tensions between these approaches. We point also to the awkward and marginalized position of urban planning and challenges it must face to regain a capacity of action in contemporary fragmented cities that know complex governance landscapes and rare or endangered resources. [less ▲]

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See detailL'expertise en procédure pénale
Michiels, Olivier ULg

Learning material (2014)

L’expertise en procédure pénale Titre I : Grands principes de procédure pénale L’ACTION PUBLIQUE DEFINITION LES SUJETS DE L'ACTION PUBLIQUE SECTION 1 LES SUJETS ACTIFS § 1 Notions générales A. Principe B ... [more ▼]

L’expertise en procédure pénale Titre I : Grands principes de procédure pénale L’ACTION PUBLIQUE DEFINITION LES SUJETS DE L'ACTION PUBLIQUE SECTION 1 LES SUJETS ACTIFS § 1 Notions générales A. Principe B. Exceptions § 2 Le ministère public A. Notion et organisation B. Statut du ministère public C. Caractères du ministère public 1. L'unité du ministère public 2. L'indivisibilité du ministère public 3. L'indépendance du ministère public D. Rôle du ministère public en matière répressive SECTION 2 LES SUJETS PASSIFS § 1 La personne physique ou morale § 2 La situation de la personne civilement responsable L'EXERCICE DE L'ACTION PUBLIQUE OU LA POURSUITE SECTION 1 PRINCIPE : L'ACTION PUBLIQUE APPARTIENT A LA SOCIETE Section 2 Modalités d'exercice de l'action publique par le ministère public L'ACTION CIVILE INTRODUCTION DEFINITION OBJET SECTION 1 LA NOTION DE DOMMAGE SECTION 2 EN QUOI CONSISTE LA REPARATION DU DOMMAGE ? § 1 Les dommages et intérêts § 2 Les restitutions § 3 Les frais et dépens – Les frais des conseil technique LES SUJETS ACTIFS § 1 La recevabilité de l'action civile A. La capacité B. La qualité C. L'intérêt LES SUJETS PASSIFS § 1 Principes § 2 Le problème de l'intervention volontaire et forcée devant les juridictions répressives A. Principe B. Exceptions L'EXERCICE DE L'ACTION CIVILE SECTION 1 OPTION ENTRE LA JURIDICTION REPRESSIVE ET LA JURIDICTION CIVILE § 1 Principe § 2 Modalités de l'option LES TROIS STADES DU PROCES PENAL SECTION 1 INFORMATION PRELIMINAIRE §1 Définition § 2 Les caractères de l'information § 3 La légalité et la loyauté des preuves SECTION 2 INSTRUCTION §1 Définition § 2 Les caractères de l'instruction §3 Le juge d’instruction SECTION 3 LE CONTROLE DE L'INSTRUCTION : LES JURIDICTIONS D'INSTRUCTION PRINCIPES GENERAUX § 1 Compétence respective du juge d'instruction et des juridictions d'instruction § 2 Attributions respectives du juge d'instruction et du juge du fond § 3 Attributions respectives des juridictions d'instruction et de jugement LA CHAMBRE DU CONSEIL § 1 Organisation § 2 Compétence § 3 Procédure en vue du règlement de la procédure § 4 Ordonnances que peut rendre la chambre du conseil LA CHAMBRE DES MISES EN ACCUSATION § 1 Organisation § 2 Compétence Renvoi des crimes, et des infractions politiques et de presse devant la cour d’assises SECTION 4 LES JURIDICTIONS DE JUGEMENT § 1 Le tribunal de police A. Les contraventions B. Compétence directe pour certains délits C. Les délits contraventionnalisés § 2 Le tribunal correctionnel A. Les délits B. Les crimes correctionnalisés C. Juridiction d'appel contre les décisions du tribunal de police § 3 La cour d'assises A. Les crimes B. Les délits politiques et de presse C. Les délits et les contraventions connexes à un crime § 4 La cour d'appel A. Juridiction d'appel des tribunaux correctionnels B. Privilège de juridiction § 5 Les juridictions de la jeunesse Titre II : L’EXPERTISE 1. Distinction entre l’expertise judiciaire en matière pénale et l’intervention de l’expert en qualité de conseiller technique 2. Nature et caractère de l’expertise ( au stade de l’information, de l’instruction et devant le juge du fond) Expertise sur l’action civile Expertise sur l’action publique Expertise mixte 3. Les principes relatifs à l’expertise Autorité compétente pour désigner un expert – la demande par une partie de la réalisation d’un expertise au stade de l’instruction ( article 61quinquies du Code d’instruction criminelle ) Le choix de l’expert ( article 43 du Code d’instruction criminelle) L’absence de formalisme du déroulement de l’expertise Le rôle de l’expert – sa mission et son impartialité Le serment de l’expert ( article 44 alinéa 2 du Code d’instruction criminelle ) Les pouvoirs et investigations de l’expert La subdélégation Le rapport d’expertise La contre-expertise et la confrontation avec l’expert 4. La force probante de l’expertise 5. Le secret professionnel de l’expert 6. Le droit au silence et l’expertise 7. La récusation de l’expert 8. Les différents types d’expertise 9. Les frais d’expertise ( articles 2 à 5 de la loi programme du 27 décembre 2006) [less ▲]

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See detailA lasso penalization approach to differential item functioning
Magis, David ULg

Conference (2014, November 24)

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See detailImpact of steam explosion treatment on chemical configuration of Tall Fescue lignin : structural elucidation using NMR spectroscopy
Maniet, Guillaume ULg; Jacquet, Nicolas ULg; Gillet, Sébastien ULg et al

Poster (2014, November 24)

In the economic and energy context of our society, it is universally recognized that alternatives to petrochemicals products must be found. To overcome this problem, renewable lignocellulosic biomass ... [more ▼]

In the economic and energy context of our society, it is universally recognized that alternatives to petrochemicals products must be found. To overcome this problem, renewable lignocellulosic biomass could be used to produce high value products. To achieve this objective, pretreatment processes are required to allow the breakdown of lignocellulosic structure and increase accessibility of the material. In this way, steam explosion is a thermo-mechano-chemical pretreatment which allows the opening of lignocellulosic material structural components and includes modifications of the physical properties of the material, hydrolysis of hemicellulosic components and modification of the chemical structure of lignin [1]. This study is focused on the impact of various steam explosion treatments on the chemical configuration of tall fescue lignin. NMR analyses perform on the Festuca L. pretreated samples show variations of links with treatment intensity. Observations show double phenomen :re-polymerization and depolymerization of the lignin structure during steam explosion process [2]. In parallel, HPSEC analyses show modifications in the molecular weight of the lignin obtained after the steam explosion treatment. [less ▲]

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See detailStudy of supernovae and massive stars and prospects with the 4m International Liquid Mirror Telescope
Kumar, Brajesh ULg

Doctoral thesis (2014)

Massive stars are the progenitors of the most energetic explosions in the Universe such as core-collapse supernovae (CCSNe) and gamma ray bursts. During their life time they follow various evolutionary ... [more ▼]

Massive stars are the progenitors of the most energetic explosions in the Universe such as core-collapse supernovae (CCSNe) and gamma ray bursts. During their life time they follow various evolutionary phases (e.g. supergiant, luminous blue variable and Wolf-Rayet). They strongly influence their environments through their energetic ionization radiation and powerful stellar winds. Furthermore, the formation of low- and intermediate-mass stars are also being regulated by them. The Carina nebula region, which hosts a large population of massive stars and several young star clusters, provides an ideal target for studying the feedback of massive stars. In this thesis, we investigated a wide field (32′ × 31′ ) region located in the west of the Carina nebula and centered on the massive binary WR 22. For our study, we used new optical photometry (UBVRI Hα), along with some low resolution spectroscopy, archival near infra-red (2MASS), and X-ray (Chandra, XMM-Newton) data. We estimated several parameters such as reddening, reddening law, etc. and also identified young stellar objects located in the region under study (Kumar et al., 2014b). Among the various types of CCSNe, Type IIb are recognized with their typical observational properties. Some of them show clear indication of double peaks in their light curves. The spectral features of these SNe show a transition between Type II and Type Ib/c events at early and later epochs, respectively. It has been noticed that the occurrence of these events is not common in volume limited surveys. In this thesis we have studied the properties of the light curve and spectral evolution of the Type IIb supernova 2011fu. The observational properties of this object show resemblance to those of SN 1993J with a possible signature of the adiabatic cooling phase (Kumar et al., 2013). When light passes through the expanding ejecta of the SNe, it retains information about the orientation of the ejected layers. In general, CCSNe exhibit a significant level of polarization during various phases of their evolution at different wavelengths. We have investigated the broad band polarimetric properties of a Type II plateau SN 2012aw and compared it with other well-studied CCSNe of similar kinds (Kumar et al., 2014a). In the framework of the present thesis, we have also contributed to the development of the 4m International Liquid Mirror Telescope (ILMT) project which is a joint collaborative effort among different universities and research institutes in Belgium, India, Canada and Poland. We performed various experiments including the spin casting of the primary mirror, optical quality tests of the mercury surface, mylar film experiments, etc. The possible scientific capabilities and future contri- butions of this telescope are also discussed. We propose our plans to identify the transients (specially supernovae) with the ILMT and their further follow-up scheme. The installation of the ILMT will start very soon at the Devasthal observatory, ARIES Nainital, India. [less ▲]

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See detailPrototype SOLAP appliqué sur des champs continus en mode raster. Analyse de hot spots de criminalité.
Kasprzyk, Jean-Paul ULg

Conference (2014, November 24)

SOLAP (Spatial OnLine Analytical Processing) is a server which allows decision makers to quickly analyze archived data from a spatial datawarehouse. Until now, most of SOLAP tools only manage spatial data ... [more ▼]

SOLAP (Spatial OnLine Analytical Processing) is a server which allows decision makers to quickly analyze archived data from a spatial datawarehouse. Until now, most of SOLAP tools only manage spatial data through the vector mode. However, some visualization techniques use interpolation to transform them into continuous fields in raster mode. Crime hotspot mapping is one of them: data are modeled in raster with a KDE (Kernel Density Estimation) algorithm to offer a spatially continuous visualization of crimes. This research aims at combining hotspot mapping and SOLAP. First, we adapt SOLAP to continuous fields with a raster multidimensional data model. Then the raster model is adapted to KDE. The data model is validated with a prototype including London crime data. [less ▲]

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See detailConnectivité trophique entre deux écosystèmes: le cas des litières de laminaires et des substrats meubles côtiers
Vandenbosch, François; Dauby, Patrick ULg; Lepoint, Gilles ULg et al

Conference (2014, November 24)

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See detailEgyptian Gods in Graeco-Roman Context. I. Rediscovering the Temple of Isis at Pompeii
Veymiers, Richard ULg

Scientific conference (2014, November 24)

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See detailClustering and segregation in driven granular fluids
Opsomer, Eric ULg; Vandewalle, Nicolas ULg; Noirhomme, Martial ULg et al

in European Physical Journal E -- Soft Matter (2014)

In microgravity, the successive inelastic collisions in a granular gas can lead to a dynamical clustering of the particles. This transition depends on the filling fraction of the system, the restitution ... [more ▼]

In microgravity, the successive inelastic collisions in a granular gas can lead to a dynamical clustering of the particles. This transition depends on the filling fraction of the system, the restitution of the used materials and on the size of the particles. We report simulations of driven bi-disperse gas made of small and large spheres. The size as well as the mass difference imply a strong modification in the kinematic chain of collisions and therefore alter significantly the formation of a cluster. Moreover, the different dynamical behaviors can also lead to a demixing of the system, adding a few small particles in a gas of large ones can lead to a partial clustering of the taller type. We realized a detailed phase diagram recovering the encountered regimes and developed a theoretical model predicting the possibility of dynamical clustering in binary systems. [less ▲]

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