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See detailA new approach in deciphering early protist paleobiology and evolution: Combined microscopy and microchemistry of single Proterozoic acritarchs
Javaux, Emmanuelle ULg; Marshal, C. P.

in Review of Palaeobotany and Palynology (2006), 139(1-4), 1-15

Beside a few cases, the biological affinities of Proterozoic and Paleozoic acritarchs remain, by definition, largely unknown. However, these fossils record crucial steps in the early evolution of ... [more ▼]

Beside a few cases, the biological affinities of Proterozoic and Paleozoic acritarchs remain, by definition, largely unknown. However, these fossils record crucial steps in the early evolution of microorganisms and diversification of complex ecosystems. We present how combining microscopy (light microscopy, scanning and transmitted electron microscopy) with microchemical analyses of individual microfossils may offer further insights into the paleobiology and evolution of early microorganisms. We use our ongoing work on early Mesoproterozoic and Neoproterozoic assemblages, as well as other published work, as examples to illustrate how this approach may clarify the evolution of early microorganisms and we underline how useful this approach could be for palynologists working on younger material. Such a multidisciplinary approach offers new possibilities to investigate the biological affinities of acritarchs and the record of early life on Earth and beyond. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

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See detailBandes à part - En marge de la bande dessinée
Paques, Frédéric ULg

in Art&Fact (2006), 25

Si on cherche à l’intérieur de l’art brut des points communs avec la bande dessinée, on peut mettre en évidence plusieurs éléments. D’une part, les artistes bruts insèrent très souvent du texte dans leurs ... [more ▼]

Si on cherche à l’intérieur de l’art brut des points communs avec la bande dessinée, on peut mettre en évidence plusieurs éléments. D’une part, les artistes bruts insèrent très souvent du texte dans leurs images pour compléter, redéfinir leur propos et même souvent sans but particulier. Ce qui était un code en bande dessinée devient ici une liberté, un décloisonnement des modes expressifs. L’imagerie B.D., souvent plus facile d’accès et liée à l’enfance, est assimilée et rendue sous une forme personnelle par de nombreux artistes marginaux. Enfin, l’aspect narratif, en une seule image et parfois en séquences, est présent dans la quasi-totalité des œuvres : les artistes bruts racontent souvent des histoires. Exemple extrême, Henry Darger produit 16 000 pages de textes illustrés par des aquarelles de dimensions parfois très grandes (3 m de large). Darger emprunte aux arts visuels populaires et reproduit des personnages de magazines en les décalquant. La bande dessinée va aussi être perçue comme art populaire et donc éloignée des arts culturels par certains artistes culturels, et ce au même titre que l’art brut. En témoignent les courants des années 1980, comme typiquement la Figuration Libre (Combas, Blanchard…), qui va littéralement brasser toutes ces influences dans un mouvement quelque peu récupérateur. [less ▲]

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See detailMechanochemistry: targeted delivery of single molecules
Duwez, Anne-Sophie ULg; Cuenot, Stéphane; Jérôme, Christine ULg et al

in Nature Nanotechnology (2006), 1

The use of scanning probe microscopy-based techniques to manipulate single molecules(1) and deliver them in a precisely controlled manner to a specific target represents a significant nanotechnological ... [more ▼]

The use of scanning probe microscopy-based techniques to manipulate single molecules(1) and deliver them in a precisely controlled manner to a specific target represents a significant nanotechnological challenge(2,3). The ultimate physical limit in the design and fabrication of organic surfaces can be reached using this approach. Here we show that the atomic force microscope (AFM), which has been used extensively to investigate the stretching of individual molecules(4-12), can deliver and immobilize single molecules, one at a time, on a surface. Reactive polymer molecules, attached at one end to an AFM tip, are brought into contact with a modified silicon substrate to which they become linked by a chemical reaction. When the AFM tip is pulled away from the surface, the resulting mechanical force causes the weakest bond - the one between the tip and polymer - to break. This process transfers the polymer molecule to the substrate where it can be modified by further chemical reactions. [less ▲]

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See detailChronique de la 60ème Session de la Société Internationale Fernand de Visscher à Komotini (26-30 Septembre 2006)
Gerkens, Jean-François ULg

in Revue Internationale des Droits de l'Antiquité (2006), LIII

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See detailFrom content distribution networks to content networks—issues and challenges
Plagemann, T.; Goebel, V.; Mauthe, A. et al

in Computer Communications (2006), 29(5), 551--562

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See detailEchinoderm skeletons record sea temperatures
Ranner, Herwig; Ladrière, Ophélie ULg; Navez, Jacques et al

Poster (2006)

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See detailHippocampal response at training promotes insight after sleep
Darsaud, Annabelle; Balteau, Evelyne ULg; Desseilles, Martin ULg et al

in NeuroImage (2006), 31(Suppl. 1),

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See detailRainer BARTHOLOMAI, Proklos. Kommentar zu Platons Parmenides 141E-142A
Gavray, Marc-Antoine ULg

in Revue Philosophique de Louvain (2006), (2), 214-216

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See detailDetermination of solid fat content (SFC) of binary fat blends and use of these data to predict SFC of selected ternary fat blends containing low-erucic rapeseed oil
Danthine, Sabine ULg; Deroanne, Claude ULg

in Journal of the American Oil Chemists' Society (2006), 83(7), 571-581

Several oils and fats often used for the industrial preparation of European shortenings were blended in binary systems. The equilibrium (after 48 h at 15 degrees C) solid fat contents (SFC; determined by ... [more ▼]

Several oils and fats often used for the industrial preparation of European shortenings were blended in binary systems. The equilibrium (after 48 h at 15 degrees C) solid fat contents (SFC; determined by pulsed NMR spectroscopy) were measured and plotted against blend composition. SFC of the blends resulted from the SFC of each fat for the considered temperature as well as the type of interaction existing between those fats (namely, ideal behavior, monotectic interaction, eutectic interaction, and so on). The type of relationship fitted was dependent on the kind of interaction: Linear relationships were found for total compatibility between fats, and polynomial-type (order 2) relationships were found for fats exhibiting incompatibility. Some corresponding ternary oils and fats blends were also prepared and analyzed. Selected relationships (regression equations of the fitted curves) obtained for binary blends were combined in order to calculate the SFC of the corresponding ternary blends. Experimental values were generally close to predicted ones. The representation of SFC as a function of composition is interesting as it allows one to determine rapidly and easily the type of molecular interaction between two fats and also to determine equations that can be. combined to calculate easily the SFC of corresponding ternary blends crystallized in the same way with a good accuracy. The texture (hardness) of several binary and ternary blends was also measured. The combination of the results obtained for SFC with the results obtained for the hardness of binary blends allows the prediction of the hardness of a corresponding ternary blend under the same conditions. [less ▲]

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See detailStrategy for DR-CALUX dioxin screening in feed under EC regulation
Scippo, Marie-Louise ULg; Rybertt, Soledad; Focant, Jean-François ULg et al

in Organohalogen Compounds (2006), 68

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See detailL’enfant (et le) sauvage : entre "L’Idiot de la famille" de Sartre et "La Pensée sauvage" de Lévi-Strauss
Cormann, Grégory ULg

in Phainomenon : Revista de Fenomenologia (2006)

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See detailDescriptive and spatial epidemiology of Rift valley fever outbreak in Yemen 2000-2001
Abdo-Salem, S.; Gerbier, G.; Bonnet, Pascal et al

in Annals of the New York Academy of Sciences (2006), 1081

Rift valley fever (RVF) is an arboviral disease produced by a bunyavirus belonging to the genus Phlebovirus. Several species of Aedes and Culex are the vectors of this virus that affects sheep, goats ... [more ▼]

Rift valley fever (RVF) is an arboviral disease produced by a bunyavirus belonging to the genus Phlebovirus. Several species of Aedes and Culex are the vectors of this virus that affects sheep, goats, buffalos, cattle, camels and human beings. The human disease is well known, especially during periods of intense epizootic activity. The initial description of the disease dates back to 1930, when animals and human outbreaks appeared on a farm in Lake Naivasha, in the Great Rift Valley of Kenya. Until 2000, this disease was only described in Africa, and then outbreaks were also declared in the Kingdom of Saudi Arabia (2000-2001 and 2004) and in Yemen (2000-2001). Animal and human cases were recorded. This work presents a retrospective summary of the data collected on animal RVF cases during this epidemic in Yemen. Results from several RVF surveys were gathered from the Yemeni vet services and FAO experts. Geographical data (topographic maps and data freely available on internet) were used for the location of outbreaks. After cleaning and standardization of location names, all the data were introduced into a GIS database. The spatial distribution of outbreaks was then studied at two scales: at the national level and at a local scale in the particular area of Wadi Mawr in the Tihama plain, Western coast of Yemen. [less ▲]

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See detailA Text Mining-based Recommendation System for Customer Decision Making in Online Product Customization
Ittoo, Ashwin ULg; Zhang, Yi Yang; Jiao, Roger

in IEEE Proceedigns of International Conference on Management of Innovation and Technology (2006)

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See detailExperimental evidences of a structural and dynamical transition in fish school
Becco, Christophe ULg; Vandewalle, Nicolas ULg; Delcourt, Johann ULg et al

in Physica A: Statistical Mechanics and its Applications (2006), 367

We have developed a video tracking system in order to determine all the trajectories of young fish (Oreochromis niloticus L.) within a school. Both individual and collective behaviours have been studied ... [more ▼]

We have developed a video tracking system in order to determine all the trajectories of young fish (Oreochromis niloticus L.) within a school. Both individual and collective behaviours have been studied as a function of the number of fish per unit area. By studying distributions of distances between fish and distributions of relative orientations, structural effects and cooperative motions have been evidenced. Signatures of a phase transition have been found, as predicted by some numerical models. This work opens new perspectives in the study of collective phenomena in biological systems since it is the first time that such measurements are possible. [less ▲]

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See detailLe retable de l'église Saint-Denis. Les panneaux peints de la prédelle: analyse technologique
Oger, Cécile ULg

in Denhaene, Godelieve (Ed.) Lambert Lombard, Peintre de la Renaissance. Liège 1505/06-1566 :Essais interdiscipinaires et catalogue de l'exposition (2006)

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See detailTargeted calretinin expression in granule cells of calretinin-null mice restores normal cerebellar functions
Bearzatto, Bertrand; Servais, Laurent; Roussel, Céline et al

in FASEB Journal (2006), 20

SPECIFIC AIMS Inactivation of gene coding for calretinin, a calcium binding protein acting as a fast calcium buffer, deeply altered the cerebellar physiology leading to motor discoordination. Although ... [more ▼]

SPECIFIC AIMS Inactivation of gene coding for calretinin, a calcium binding protein acting as a fast calcium buffer, deeply altered the cerebellar physiology leading to motor discoordination. Although mechanistic hypotheses have been proposed to explain these alterations, the widespread expression of calretinin in the whole central nervous system and its expression in several neuronal types in the cerebellar circuitry preclude a precise mechanistic demonstration. The aim of this study was to determine to what extent the expression of calretinin in a specific neuronal cell type, the cerebellar granule cells, contributes to the phenotype detected in calretinin knockout (Cr–/–) mice. To achieve this objective, we constructed transgenic Cr–/– mice exhibiting a selective re-expression of Cr in granule cells (hereafter referred to as Cr-rescue) through the promoter function of the GABAA receptor {alpha}6 subunit gene. [less ▲]

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See detailUn regard sur les activités de l'unité de statistique et informatique de la Faculté Universitaire des Sciences agronomiques de Gembloux
Claustriaux, Jean-Jacques ULg

in Notes de Statistique et d'Informatique (2006), (1), 1-9

Analyse de l'évolution de la gestion d'un service universitaire dont le domaine de compétence est la statistique appliquée.

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