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See detailUltrastructural organization of the reptilian nucleolus
Lamaye, Françoise; Thiry, Marc ULg

Poster (2007)

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See detailSperm quality and cryopreservation in Perca fluviatilis
Linhart, Ottomar; Alavi Hadi, S. M.; Rodina, M. et al

Conference (2007)

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See detailEpithelial-mesenchymal transition process in human embryonic stem cells cultured in feeder-free conditions.
Ullmann, U.; In'T Veld, P.; Gilles, Christine ULg et al

in Molecular Human Reproduction (2007), 13(1), 21-32

Feeder-free human embryonic stem cell (hESC) culture is associated with the presence of mesenchymal-like cells appearing at the periphery of the colonies. The aim of this study was to identify this early ... [more ▼]

Feeder-free human embryonic stem cell (hESC) culture is associated with the presence of mesenchymal-like cells appearing at the periphery of the colonies. The aim of this study was to identify this early differentiation process. Long-term feeder-free hESC cultures using matrigel and conditioned medium from mouse and from human origin revealed that the appearance of mesenchymal-like cells was similar regardless of the conditioned medium used. Standard characterization confirmed the preservation of hESC properties, but the feeder-free cultures could not be maintained longer than 37 passages. The early differentiation process was characterized in the short term after switching hESCs cultured on feeders to feeder-free conditions. Transmission electron microscopy showed an epithelium-like structure inside the hESC colonies, whereas the peripheral cells revealed the acquisition of a rather mesenchymal-like phenotype. Immunochemistry analysis showed that cells at the periphery of the colonies had a negative E-cadherin expression and a positive Vimentin expression, suggesting an epithelial–mesenchymal transition (EMT). Nuclear staining of ß-catenin, positive N-cadherin and negative Connexin 43 expression were also found in the mesenchymal-like cell population. After RT–PCR analysis, Slug and Snail, both EMT-related transcription factors, were detected as up-regulated in the mesenchymal-like cell population. Taken together, our data suggest that culturing hESCs in feeder-free conditions enhances an early differentiation process identified as an EMT. [less ▲]

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See detailDermométrologie et mécanobiologie
QUATRESOOZ, Pascale ULg; PIERARD, Gérald ULg

Scientific conference (2007)

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See detailAntimony vibrations in skutterudites probed by Sb-121 nuclear inelastic scattering
Wille, H *-C; Hermann, Raphaël ULg; Sergueev, I. et al

in Physical Review. B, Condensed Matter and Materials Physics (2007), 76(14),

The specific lattice dynamic properties of antimony in the unfilled CoSb3 and filled EuFe4Sb12 skutterudites have been determined by nuclear inelastic scattering at the Sb-121 nuclear resonance energy of ... [more ▼]

The specific lattice dynamic properties of antimony in the unfilled CoSb3 and filled EuFe4Sb12 skutterudites have been determined by nuclear inelastic scattering at the Sb-121 nuclear resonance energy of 37.1298(2) keV with a 4.5 meV high-resolution backscattering sapphire monochromator. The Sb partial vibrational density of states (DOS) shows a maximum centered at 17 and 16 meV in CoSb3 and EuFe4Sb12, respectively. The difference between the Sb DOSs of CoSb3 and EuFe4Sb12 reveals that upon filling there is a transfer of 10% of the vibrational states toward lower energy. Further, a likely indication of the coupling between the guest and the host lattice in rattler systems is observed, a coupling that is required to reduce the lattice thermal conductivity. [less ▲]

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See detailL’accompagnement professionnel face aux enjeux de qualité de services
Pirard, Florence ULg

in Brougère, G.; Vandenbroeck, M. (Eds.) Repenser l’éducation des jeunes enfants (2007)

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See detailLes principales formations végétales
Ouédraogo, M.; Vermeulen, Cédric ULg; Cornélis, D.

in Delvingt, W.; Vermeulen, Cédric (Eds.) Nazinga (2007)

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See detailPalynomorph distribution and bathymetry in the Chanxhe section (eastern Belgium), reference for the neritic late to latest Famennian transition (Late Devonian).
Maziane-Serraj, N; Hartkopf-Fröder, C; Streel, Maurice ULg et al

in Geologica Belgica (2007), 10(3-4), 170-175

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See detailTre pastiches montaliani di Fabio Pusterla
Benzoni, Pietro ULg

in Per leggere (2007), 12

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See detailLes mimétismes chez Francis Ponge
Demoulin, Laurent ULg

in Wilhelm, Frank; Baustert, Raymond; Colas-Blaise, Marion (Eds.) et al Le Blé en herbe (2007)

Il s'agit de démontrer que le poète français Francis Ponge adaptait l'écriture de chacun de ses poèmes à son objet. Ainsi la syntaxe et la rythmique du poème intitulé "La valise" mime-t-elle l'intériorité ... [more ▼]

Il s'agit de démontrer que le poète français Francis Ponge adaptait l'écriture de chacun de ses poèmes à son objet. Ainsi la syntaxe et la rythmique du poème intitulé "La valise" mime-t-elle l'intériorité propre à cet objet. [less ▲]

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See detailDendritic cells genetically engineered to express IL-10 induce long-lasting antigen-specific tolerance in experimental asthma
Henry, E.; Desmet, C. J.; Garzé, V. et al

Poster (2007)

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See detailSelf-formation of hierarchical micro-meso-macroporous structures: Generation of the new concept "Hierarchical Catalysis"
Vantomme, A.; Léonard, Alexandre ULg; Yuan, Z.-Y. et al

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2007), 300(1-2 SPEC. ISS.), 70-78

The self-formation phenomenon of hierarchy with multiple-scaled porosity is reported. The structures of various chemical compositions, such as ZrO2, TiO2, Al2O3, Y2O3, Nb2O5, Ta2O5 ZrO2-SiO2, ZrO2-TiO2 ... [more ▼]

The self-formation phenomenon of hierarchy with multiple-scaled porosity is reported. The structures of various chemical compositions, such as ZrO2, TiO2, Al2O3, Y2O3, Nb2O5, Ta2O5 ZrO2-SiO2, ZrO2-TiO2, ZrO2-Y2O3, aluminosilicates, aluminophosphates, silicoaluminophosphates, metallophosphates, are made of macrochannels (0.5-5 μm in diameter) with mesoporous or microporous walls. The hierarchically porous structures are prepared by just controlling the hydrolysis and polycondensation rates of the pre-selected inorganic sources. The textural, structural as well as morphological properties of each material are carefully studied by using a large series of techniques, such as XRD, NMR, TEM, SEM, N2 adsorption-desorption, Hg porosimetry, optical microscopy. On the basis of these multimodal porous structures, a new concept "Hierarchical Catalysis" has been proposed. This new concept can allow the realisation of a multiple steps reaction in one single catalyst in a cascade way without any separation processes. © 2007 Elsevier B.V. All rights reserved. [less ▲]

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See detailModeling the influence of Greenland ice sheet melting on the Atlantic meridional overturning circulation during the next millennia
Driesschaert, E.; Fichefet, T.; Goosse, H. et al

in Geophysical Research Letters (2007), 34(10),

A three-dimensional Earth system model of intermediate complexity including a dynamic ice sheet component has been used to investigate the long-term evolution of the Greenland ice sheet and its effects on ... [more ▼]

A three-dimensional Earth system model of intermediate complexity including a dynamic ice sheet component has been used to investigate the long-term evolution of the Greenland ice sheet and its effects on the Atlantic meridional overturning circulation (AMOC) in response to a range of stabilized anthropogenic forcings. Our results suggest that the Greenland ice sheet volume should experience a significant decrease in the future. For a radiative forcing exceeding 7.5 W m(-2), the modeled ice sheet melts away within 3000 years. A number of feedbacks operate during this deglaciation, implying a strong nonlinear relationship between the radiative forcing and the melting rate. Only in the most extreme scenarios considered, the freshwater flux from Greenland into the surrounding oceans ( of ca. 0.1 Sv during a few centuries) induces a noticeable weakening of the AMOC in the model. [less ▲]

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See detailMacronutrient composition of three cucurbit species cultivated for seed consumption in Côte d'Ivoire
Loukou, A. L.; Gnakri, D.; Djè, Y. et al

in African Journal of Biotechnology (2007), 6(5), 529-533

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See detailComparison of different techniques for inoculation of "Candidatus Phytoplasma mali" on apple and periwinkle in biological indexing procedure.
Aldaghi, M.; Massart, Sébastien ULg; Roussel, S. et al

in Communications in agricultural and applied biological sciences (2007), 72(4), 779-784

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See detailBenefits of an out-patient multidisciplinary rehabilitation program in the treatment of chronic low back pain
Vanderthommen, Marc ULg; Demoulin, Christophe ULg; GROSDENT, Stéphanie ULg et al

in Abstract book of 6th Interdisciplinary World Congress on Low Back & Pelvic Pain (2007)

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See detailComparison of cross-field pitting in fresh, dried and charcoalified softwoods
Gerards, Thomas ULg; Damblon, Freddy ULg; Wauthoz, B. et al

in Iawa Journal (2007), 28(1), 49-60

Cross-field pitting is one of the most reliable characters for softwood identifi cation. During charcoalification, a range of severe qualitative and quantitative modifications may occur in cross-field ... [more ▼]

Cross-field pitting is one of the most reliable characters for softwood identifi cation. During charcoalification, a range of severe qualitative and quantitative modifications may occur in cross-field pitting. As most fossil or archaeological wood remains are preserved as charcoal (fusain), the question arises whether these modifications hamper the accurate identification of some taxa. This work is a systematic biometric study of a wide range of gymnosperm cross-field pitting after experimental charcoalification. We focused on the window-like, piceoid, taxodioid, cupressoid, araucarioid and podocarpoid cross-field pitting types. Our main results are the following: 1) Cross-field pits of wood specimens dried out before charcoalification are hidden by a thin closing wall; in this case, it is often impossible to discriminate between the various types of cross-field pitting. 2) Piceoid cross-field pitting becomes taxodioid-like after charcoalification. 3) Biometric study of charred softwood cross-field pitting dimensions shows that the ratios between height and width of pit aperture and border allow us to distinguish and characterise four types of pitting (window-like, piceoid, taxodioid, cupressoid + araucarioid + podocarpoid [= CAP]). The discrimination within the CAP type requires further investigation. [less ▲]

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See detailForward models for EEG
Phillips, Christophe ULg; Mattout, Jérémie; Friston, Karl

in Friston, Karl; Ashburner, John; Kiebel, Stefan (Eds.) et al Statistical Parametric Mapping: the analysis of functional brain images (2007)

The book Statistical Parametric Mapping: The Analysis of Functional Brain Images (2007) provides the background and methodology for the analysis of all types of brain imaging data, from functional ... [more ▼]

The book Statistical Parametric Mapping: The Analysis of Functional Brain Images (2007) provides the background and methodology for the analysis of all types of brain imaging data, from functional magnetic resonance imaging to magnetoencephalography. Critically, "Statistical Parametric Mapping" provides a widely accepted conceptual framework which allows treatment of all these different modalities. The book takes the reader from the basic concepts underlying the analysis of neuroimaging data to cutting edge approaches that would be difficult to find in any other source. The material is presented in an incremental way so that the reader can understand the precedents for each new development. This book will be particularly useful to neuroscientists engaged in any form of brain mapping; who have to contend with the real-world problems of data analysis and understanding the techniques they are using. It is primarily a scientific treatment and a didactic introduction to the analysis of brain imaging data. It can be used as both a textbook for students and scientists starting to use the techniques, as well as a reference for practicing neuroscientists. [less ▲]

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