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See detailIRF6 Screening of Syndromic and a priori Non-Syndromic Cleft Lip and Palate Patients: Identification of a New Type of Minor VWS Sign.
Desmyter, L.; Ghassibe, M.; Revencu, N. et al

in Molecular Syndromology (2010), 1(2), 67-74

Van der Woude syndrome (VWS), caused by dominant IRF6 mutation, is the most common cleft syndrome. In 15% of the patients, lip pits are absent and the phenotype mimics isolated clefts. Therefore, we ... [more ▼]

Van der Woude syndrome (VWS), caused by dominant IRF6 mutation, is the most common cleft syndrome. In 15% of the patients, lip pits are absent and the phenotype mimics isolated clefts. Therefore, we hypothesized that some of the families classified as having non-syndromic inherited cleft lip and palate could have an IRF6 mutation. We screened in total 170 patients with cleft lip with or without cleft palate (CL/P): 75 were syndromic and 95 were a priori part of multiplex non-syndromic families. A mutation was identified in 62.7 and 3.3% of the patients, respectively. In one of the 95 a priori non-syndromic families with an autosomal dominant inheritance (family B), new insights into the family history revealed the presence, at birth, of lower lip pits in two members and the diagnosis was revised as VWS. A novel lower lip sign was observed in one individual in this family. Interestingly, a similar lower lip sign was also observed in one individual from a 2nd family (family A). This consists of 2 nodules below the lower lip on the external side. In a 3rd multiplex family (family C), a de novo mutation was identified in an a priori non-syndromic CL/P patient. Re-examination after mutation screening revealed the presence of a tiny pit-looking lesion on the inner side of the lower lip leading to a revised diagnosis of VWS. On the basis of this data, we conclude that IRF6 should be screened when any doubt rises about the normality of the lower lip and also if a non-syndromic cleft lip patient (with or without cleft palate) has a family history suggestive of autosomal dominant inheritance. [less ▲]

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See detailA new case of consensual decision: collective movement in earthworms
Zirbes, Lara ULg; Deneubourg, Jean-Louis; Brostaux, Yves ULg et al

in Ethology (2010), 115

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See detailA survey of honey bee colony losses in Belgium, fall 2008 to spring 2009
Nguyen, Bach Kim ULg; Mignon, Jacques ULg; Laget, D. et al

Conference (2010)

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See detailMulti-Months Cycles Observed in Climatic Data
Nicolay, Samuel ULg; Mabille, Georges ULg; Fettweis, Xavier ULg et al

in Simard, Suzanne (Ed.) Climate Change and Variability (2010)

Climatic variations happen at all time scales and since the origins of these variations are usually of very complex nature, climatic signals are indeed chaotic data. The identification of the cycles ... [more ▼]

Climatic variations happen at all time scales and since the origins of these variations are usually of very complex nature, climatic signals are indeed chaotic data. The identification of the cycles induced by the natural climatic variability is therefore a knotty problem, yet the knowing of these cycles is crucial to better understand and explain the climate (with interests for weather forecasting and climate change projections). Due to the non-stationary nature of the climatic time series, the simplest Fourier-based methods are inefficient for such applications (see e.g. Titchmarsh (1948)). This maybe explains why so few systematic spectral studies have been performed on the numerous datasets allowing to describe some aspects of the climate variability (e.g. climatic indices, temperature data). However, some recent studies (e.g. Matyasovszky (2009); Paluš & Novotná (2006)) show the existence of multi-year cycles in some specific climatic data. This shows that the emergence of new tools issued from signal analysis allows to extract sharper information from time series. Here, we use a wavelet-based methodology to detect cycles in air-surface temperatures obtained from worldwide weather stations, NCEP/NCAR reanalysis data, climatic indices and some paleoclimatic data. This technique reveals the existence of universal rhythms associated with the periods of 30 and 43 months. However, these cycles do not affect the temperature of the globe uniformly. The regions under the influence of the AO/NAO indices are influenced by a 30 months period cycle, while the areas related to the ENSO index are affected by a 43 months period cycle; as expected, the corresponding indices display the same cycle. We next show that the observed periods are statistically relevant. Finally, we consider some mechanisms that could induce such cycles. This chapter is based on the results obtained in Mabille & Nicolay (2009); Nicolay et al. (2009; 2010). [less ▲]

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See detailLE FONCTIONNEMENT EXECUTIF CHEZ L’ENFANT APPROCHE DEVELOPPEMENTALE ET NEUROPSYCHOLOGIQUE
Catale, Corinne ULg

Doctoral thesis (2010)

Dans la cadre de ce travail de thèse dont l’objectif principal est de contribuer à une meilleure compréhension du fonctionnement exécutif, nous avons adopté une perspective développementale et ... [more ▼]

Dans la cadre de ce travail de thèse dont l’objectif principal est de contribuer à une meilleure compréhension du fonctionnement exécutif, nous avons adopté une perspective développementale et neuropsychologique. Ce travail s’articule dès lors en deux parties. L’objectif principal de la première partie est de viser à une meilleure compréhension du développement de certaines fonctions exécutives chez des enfants d’âge préscolaire et scolaire (Etudes 1 et 2) et de déterminer la structure factorielle de ces fonctions dans le développement (Etude 2). La troisième étude vise quant à elle à mieux comprendre l’influence de l’environnement socio-culturel, et plus spécifiquement du niveau éducationnel parental, sur le développement de certaines fonctions cognitives (en ce compris les fonctions exécutives). L’objectif principal de la deuxième partie est, quant à lui, de déterminer le profil attentionnel et exécutif d’enfants victimes d’un traumatisme crânien ou qui présentent un trouble de l’attention avec/sans hyperactivité. Dans cette optique, nous évaluerons d’une part différentes fonctions attentionnelles et exécutives, et d’autre part les changements comportementaux chez des enfants victimes d’un traumatisme crânien léger (Etude 4). Enfin, et de façon plus spécifique, nous tenterons de mieux comprendre les difficultés d’inhibition présentées par des enfants qui ont été victimes d’un traumatisme crânien modéré à sévère (Etude 5) ou qui présentent un trouble de l’attention avec/sans hyperactivité (Etude 6). [less ▲]

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See detailEnteroviral meningoencephalitis as complication of Rituximab therapy in a patient treated for diffuse large B-cell lymphoma
Servais, Sophie ULg; Caers, Jo ULg; Warling, Odette et al

in British Journal of Haematology (2010), 150(3), 379-381

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See detailThe nucleolus: structure/function relationship in RNA metabolism.
Hernandez-Verdun, Daniele; Roussel, Pascal; Thiry, Marc ULg et al

in Wiley Interdisciplinary Reviews. RNA (2010), 1(3), 415-31

The nucleolus is the ribosome factory of the cells. This is the nuclear domain where ribosomal RNAs are synthesized, processed, and assembled with ribosomal proteins. Here we describe the classical ... [more ▼]

The nucleolus is the ribosome factory of the cells. This is the nuclear domain where ribosomal RNAs are synthesized, processed, and assembled with ribosomal proteins. Here we describe the classical tripartite organization of the nucleolus in mammals, reflecting ribosomal gene transcription and pre-ribosomal RNA (pre-rRNA) processing efficiency: fibrillar center, dense fibrillar component, and granular component. We review the nucleolar organization across evolution from the bipartite organization in yeast to the tripartite organization in humans. We discuss the basic principles of nucleolar assembly and nucleolar structure/function relationship in RNA metabolism. The control of nucleolar assembly is presented as well as the role of pre-existing machineries and pre-rRNAs inherited from the previous cell cycle. In addition, nucleoli carry many essential extra ribosomal functions and are closely linked to cellular homeostasis and human health. The last part of this review presents recent advances in nucleolar dysfunctions in human pathology such as cancer and virus infections that modify the nucleolar organization. [less ▲]

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See detailMatériaux composites
Courard, Luc ULg

Learning material (2010)

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See detailLes défis du droit romain et du droit privé comparé
Gerkens, Jean-François ULg

in Gosselin, Antoinette; Langevin, Caroline; Wautelet, Patrick (Eds.) L'avenir de la recherche: Réflexions à l'occasion des leçons inaugurales 2010 (2010)

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See detailVariability in carbon exchange of European croplands
Moors, E. J.; Jacobs, C.; Jans, W. et al

in Agriculture, Ecosystems & Environment (2010), 139

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See detailRadiative lifetime measurements and calculations of odd-parity highly excited levels in Ba I
Zhang, W; Palmeri, P; Quinet, Pascal ULg et al

in Physical Review. A (2010), 82

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See detailLa possession
Boufflette, Sophie ULg

Book published by Larcier - 3ème éd. (2010)

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See detailSemi-solid metallic alloys modeling for the simulation of thixoforming processes
Koeune, Roxane ULg; Ponthot, Jean-Philippe ULg

in Vaz Jr., M.; de Souza Neto, E. A.; Munoz-Rojas, P. A. (Eds.) Computational Materials Modeling (2010)

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See detailA structural study of the lithiophilite-sicklerite series
Hatert, Frédéric ULg

in 26th European Crystallographic Meeting, Abstract book (2010)

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See detailMagnetic model refinement via a coupling of finite element subproblems
Dular, Patrick ULg; V Sabariego, Ruth ULg; Krähenbühl, Laurent et al

in Proceedings of Scientific Computing in Electrical Engineering (SCEE 2010) (2010)

Model refinements of magnetic circuits are performed via a subdomain finite element method. A complete problem is split into subproblems with overlap- ping meshes, to allow a progression from source to ... [more ▼]

Model refinements of magnetic circuits are performed via a subdomain finite element method. A complete problem is split into subproblems with overlap- ping meshes, to allow a progression from source to reaction fields, ideal to real flux tubes, 1-D to 3-D models, perfect to real materials, statics to dynamics, with any coupling of these changes. Its solution is then the sum of the subproblem solutions. The procedure simplifies both meshing and solving processes, and quantifies the gain given by each refinement on both local fields and global quantities. [less ▲]

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See detailPolymer/carbon nanotube composites for electromagnetic interference réduction
Thomassin, Jean-Michel ULg; Jérôme, Robert ULg; Detrembleur, Christophe ULg et al

in Tjong, S. C.; Mai, Y.-W. (Eds.) Physical properties and applications of polymer nanocomposites (2010)

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See detailBulk organic geochemistry of sediments from Puyehue Lake and its watershed (Chile, 40°S): Implications for paleoenvironmental reconstructions
Bertrand, Sébastien; Sterken, Mieke; Vargas-Ramirez, Lourdes et al

in Palaeogeography, Palaeoclimatology, Palaeoecology (2010), 294

Since the last deglaciation, the mid-latitudes of the southern Hemisphere have undergone considerable environmental changes. In order to better understand the response of continental ecosystems to ... [more ▼]

Since the last deglaciation, the mid-latitudes of the southern Hemisphere have undergone considerable environmental changes. In order to better understand the response of continental ecosystems to paleoclimate changes in southern South America, we investigated the sedimentary record of Puyehue Lake, located in the western piedmont of the Andes in South-Central Chile (40°S). We analyzed the elemental (C, N) and stable isotopic ([delta]13C, [delta]15N) composition of the sedimentary organic matter preserved in the lake and its watershed to estimate the relative changes in the sources of sedimentary organic carbon through space and time. The geochemical signature of the aquatic and terrestrial end-members was determined on samples of lake particulate organic matter (N/C: 0.130) and Holocene paleosols (N/C: 0.069), respectively. A simple mixing equation based on the N/C ratio of these end-members was then used to estimate the fraction of terrestrial carbon ([latin small letter f with hook]T) preserved in the lake sediments. Our approach was validated using surface sediment samples, which show a strong relation between [latin small letter f with hook]T and distance to the main rivers and to the shore. We further applied this equation to an 11.22 m long sediment core to reconstruct paleoenvironmental changes in Puyehue Lake and its watershed during the last 17.9 kyr. Our data provide evidence for a first warming pulse at 17.3 cal kyr BP, which triggered a rapid increase in lake diatom productivity, lagging the start of a similar increase in sea surface temperature (SST) off Chile by 1500 years. This delay is best explained by the presence of a large glacier in the lake watershed, which delayed the response time of the terrestrial proxies and limited the concomitant expansion of the vegetation in the lake watershed (low [latin small letter f with hook]T). A second warming pulse at 12.8 cal kyr BP is inferred from an increase in lake productivity and a major expansion of the vegetation in the lake watershed, demonstrating that the Puyehue glacier had considerably retreated from the watershed. This second warming pulse is synchronous with a 2 °C increase in SST off the coast of Chile, and its timing corresponds to the beginning of the Younger Dryas Chronozone. These results contribute to the mounting evidence that the climate in the mid-latitudes of the southern Hemisphere was warming during the Younger Dryas Chronozone, in agreement with the bipolar see-saw hypothesis. [less ▲]

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See detailSpectrométrie de masse MALDI-TOF en bactériologie clinique ou comment identifier une bactérie en une minute
MEEX, Cécile ULg

in Spectrométrie de masse MALDI-TOF en bactériologie clinique ou comment identifier une bactérie en une minute (2010)

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