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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 detailPsoriasis et arthrite psoriasique
Henno, Audrey ULg; Rausin, Annick ULg; Malaise, Michel ULg et al

in Revue Médicale de Liège (2006), 61(5-6, May-Jun), 334-340

Psoriasis is a frequent multifactorial chronic skin disease that can lead to a decreased quality of life. Some patients also present arthritis. Those two complex inflammatory diseases share some of their ... [more ▼]

Psoriasis is a frequent multifactorial chronic skin disease that can lead to a decreased quality of life. Some patients also present arthritis. Those two complex inflammatory diseases share some of their characteristics, but several clinical manifestations can be distinguished in each of them. In addition to classical medications (constituted of topical treatments, methotrexate, ciclosporin and retinoids for cutaneous psoriasis and non steroidal anti-inflammatory drugs or methotrexate for psoriatic arthritis), they are the target of a new generation of therapies: the biologics. [less ▲]

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See detailAperçu de l’histoire du Trésor de la cathédrale de Liège
George, Philippe ULg

in Bulletin de la Société Royale Le Vieux-Liège (2006), t. XV, n° 314

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See detailHashimoto's Encephalopathy in graves' disease
Tamagno, G.; de Carlo, E.; Beckers, Albert ULg et al

in 23ème Congrès de la Société Française d'Endocrinologie - Abstract book (2006)

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See detailYBa2Cu3O(7-delta) thick films on Ag prepared by the electrophoretic deposition technique
Dusoulier, Laurent; Denis, Samuel; Fagnard, Jean-François ULg et al

in Journal of Physics: Conference Series (2006), 43

YBa2Cu3O7-δ thick films have been deposited onto Ag substrates by the Electrophoretic Deposition (EPD) technique. Different microstructures and electrical behaviours were observed depending on the ... [more ▼]

YBa2Cu3O7-δ thick films have been deposited onto Ag substrates by the Electrophoretic Deposition (EPD) technique. Different microstructures and electrical behaviours were observed depending on the starting powder. Coatings prepared from commercial powder displayed significant porosity and the superconducting transition width was found to be magnetic-field dependent. Films produced from home-made coprecipitated powder are denser but contain some secondary phases. No dependence of the resistive transition as a function of magnetic field (H ≤ 20 Oe) was observed in that case. [less ▲]

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See detailGRB 061006: optical afterglow.
Malesani, D.; Stella, L.; D'Avanzo, P. et al

in GRB Coordinates Network (2006), 5718

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See detailLes conditions d'exercice de la profession d'architecte
Kohl, Benoît ULg

Conference (2006)

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See detailThe unexpected interaction between the DNA repair protein Ku and metalloprotease 9 : a role for Ku in invasion ?
Paupert, Jenny ULg; Monferran, Sylvie; Dauvillier, Stéphanie et al

Scientific conference (2006)

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See detailLes bases de données spatiales
Donnay, Jean-Paul ULg

in Cahiers de la Documentation = Bladen voor Documentatie (2006), 1

Derrière la « carte », média le plus commun pour accéder à l’information spatiale, il y a des données, qu’il a fallu collecter, mémoriser et gérer, sous forme numérique depuis près d’un demi-siècle. Les ... [more ▼]

Derrière la « carte », média le plus commun pour accéder à l’information spatiale, il y a des données, qu’il a fallu collecter, mémoriser et gérer, sous forme numérique depuis près d’un demi-siècle. Les données, spatiales ou géographiques, présentent plusieurs particularités dont la moindre n’est certes pas la présence, parmi ses caractéristiques, d’une géométrie censée traduire la portion de la surface terrestre portant une ou plusieurs propriétés thématiques. Indépendamment des techniques de collecte de l’information géographique (topographie, photogrammétrie, etc.), des techniques de visualisation (cartographie) et de traitement (analyse spatiale), la seule gestion de l’information a connu une évolution sensible au cours des dernières décennies. Partant de systèmes de fichiers, la gestion de l’information spatiale a successivement fait appel à des modèles de gestion de bases de données de plus en plus élaborés, au point d’exploiter aujourd’hui les ressources les plus pointues des bases de données réparties reposant sur un modèle objet-relationnel. [less ▲]

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See detailCoupling cell cycle exit, neuronal differentiation and migration in cortical neurogenesis.
Nguyen, Laurent ULg; Besson, Arnaud; Roberts, James M et al

in Cell Cycle (Georgetown, Tex.) (2006), 5(20), 2314-8

The generation of new neurons in the cerebral cortex requires that progenitor cells leave the cell cycle and activate specific programs of differentiation and migration. Genetic studies have identified ... [more ▼]

The generation of new neurons in the cerebral cortex requires that progenitor cells leave the cell cycle and activate specific programs of differentiation and migration. Genetic studies have identified some of the molecules controlling these cellular events, but how the different aspects of neurogenesis are integrated into a coherent developmental program remains unclear. One possible mechanism implicates multifunctional proteins that regulate, both cell cycle exit and cell differentiation.(1) A prime example is the cyclin-dependent kinase inhibitor p27(Kip1), which has recently been shown to function beyond cell cycle regulation and promote both neuronal differentiation and migration of newborn cortical neurons, through distinct and separable mechanisms. p27(Kip1) is therefore part of a machinery that couples the multiple events of neurogenesis in the cerebral cortex. [less ▲]

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See detailIn vitro transport studies of nifedipine nanoparticles across Caco-2/HT29- 5M21 cultures and co-cultures
Hecq, Julien; Nollevaux, Géraldine; Deleers, M. et al

Poster (2006)

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See detailLa mise en état des causes sur la base de l'article 4 du titre préliminaire du Code de procédure pénale
Michiels, Olivier ULg

in Jurisprudence de Liège, Mons et Bruxelles (JLMB) (2006)

L'article est publié sous un jugement pronconé par le tribunal de police de Nivelles. Il donne l'occasion à l'auteur de rappeler, en quelques points, la procédure de la mise en état des intérêts civils ... [more ▼]

L'article est publié sous un jugement pronconé par le tribunal de police de Nivelles. Il donne l'occasion à l'auteur de rappeler, en quelques points, la procédure de la mise en état des intérêts civils telle qu'elle est organisée par le nouvel article 4 du titre préliminaire du code de procédure pénale. [less ▲]

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See detailA Semantic Approach to the Egyptian Language : the Case of Time and Aspect. Towards a New Paradigm
Winand, Jean ULg

in Lingua Aegyptia [= LingAeg] (2006), (14), 451-472

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See detailCoupling a two-way nested primitive equation model and a statistical SST predictor of the Ligurian Sea via data assimilation
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Beckers, Jean-Marie ULg et al

in Ocean Modelling (2006), 13(3-4), 255-270

A primitive equation model and a statistical predictor are coupled by data assimilation in order to combine the strength of both approaches. In this work, the system of two-way nested models centred in ... [more ▼]

A primitive equation model and a statistical predictor are coupled by data assimilation in order to combine the strength of both approaches. In this work, the system of two-way nested models centred in the Ligurian Sea and the satellite-based ocean forecasting (SOFT) system predicting the sea surface temperature (SST) are used. The data assimilation scheme is a simplified reduced order Kalman filter based on a constant error space. The assimilation of predicted SST improves the forecast of the hydrodynamic model compared to the forecast obtained by assimilating past SST observations used by the statistical predictor. This study shows that the SST of the SOFT predictor can be used to correct atmospheric heat fluxes. Traditionally this is done by relaxing the model SST towards the climatological SST. Therefore, the assimilation of SOFT SST and climatological SST are also compared. (c) 2006 Elsevier Ltd. All rights reserved. [less ▲]

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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 detailLes angles corniculaires et l'infiniment petit
Bair, Jacques ULg; Henry, Valérie ULg

in Tangente Sup (2006), 31(mai-juin), 4-7

Nous mettons en évidence le fait que des angles entre un demi-cercle et une droite tangente mène au concept d'infiniment petit.

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See detailSocial Insurance and Redistribution with Moral Hazard and Adverse Selection
Boadway, Robin; Leite-Monteiro, Manuel; Pestieau, Pierre ULg et al

in Scandinavian Journal of Economics (2006), 108(2), 279-298

Rochet (1991) showed that with distortionary income taxes, social insurance is a desirable redistributive device when risk and ability are negatively correlated. This finding is re-examined when ex post ... [more ▼]

Rochet (1991) showed that with distortionary income taxes, social insurance is a desirable redistributive device when risk and ability are negatively correlated. This finding is re-examined when ex post moral hazard and adverse selection are included, and under different informational assumptions. Individuals can take actions influencing the size of the loss in the event of accident (or ill health). Social insurance can be supplemented by private insurance, but private insurance markets are affected by both adverse selection and moral hazard. We study how equity and efficiency considerations should be traded off in choosing the optimal coverage of social insurance when those features are introduced. The case for social insurance is strongest when the government is well informed about household productivity. [less ▲]

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See detailLe fonctionnement de la mémoire épisodique dans la maladie d'Alzheimer
Adam, Stéphane ULg

in Belin, Catherine; Ergis, Anne-Marie; Moreau, Olivier (Eds.) Actualités sur les démences: Aspects cliniques et neuropsychologiques (2006)

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