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See detailImprégnation de polymères par voie CO2 supercritique: suivi in situ par microscopie FTIR
Champeau, Mathilde; Thomassin, Jean-Michel ULg; Jérôme, Christine ULg et al

Conference (2012, September 15)

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See detailImpregnation method for detecting annual laminations in sediment cores: An overview
Boes, Xavier; Fagel, Nathalie ULg

in Sedimentary Geology (2005), 179(3-4), 185-194

Annually laminated sediments can provide an absolute time scale (by varve counting) and a high-resolution palaeoclimate information (from varve thickness). Both types of information may be directly ... [more ▼]

Annually laminated sediments can provide an absolute time scale (by varve counting) and a high-resolution palaeoclimate information (from varve thickness). Both types of information may be directly measured from sediment core surfaces. In this paper, we stress that varve counting and varve thickness measurements derived from fresh core surfaces could not systematically reveal the internal sedimentary structure, even if assisted by high resolution image analysis. We present an example of a homogeneous sediment core for which the varves were only observable after core impregnation and polishing steps. Because the impregnation methods are not yet standardized, the aim of this paper is to give an updated review of the methodology. In this review, we present the major critical points during impregnation steps. In particular, we focus on all of the post-treatment sediment disturbances that can alter the laminated micro-structure and, consequently, varve measurements. Finally, we propose a modified impregnation protocol, especially adapted for tracking varved intervals in long cores. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detail«Una impressione globale nello spazio» e alcune presenze fantastiche nel Gattopardo
de Seta, Ilaria ULg

in Libellula (La) : Rivista di Italianistica (2010), 2(2), 86-95

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See detailImpressions du temps présent. L’exposition de Toma Muteba Luntumbue, Aimé Ntakiyica et Aimé Mpané
Bawin, Julie ULg

in Art Même : Chronique des Arts Plastiques de la Communauté française de Belgique (2007), (34), 38-39

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See detailImpressum Leodii... L’imprimerie à Liège avant Morberius
Adam, Renaud ULg

in Marchandisse, Alain (Ed.) Florilège du livre en Principauté de Liège du IXe au XVIIIe siècle (2009)

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See detailL’imprimerie à Bruxelles au temps de Charles Quint
Adam, Renaud ULg

Conference given outside the academic context (2012)

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See detailL’imprimerie à Liège avant Morberius
Adam, Renaud ULg

Scientific conference (2008, December 12)

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See detailImprimeurs en Brabant et en Flandre au temps de Philippe le Beau
Adam, Renaud ULg

in Wijsman, Hanno (Ed.) Books in Transition at the Time of Philip the fair. Manuscripts and Printed Books in the Late fifteenth and Early Sixteenth Century Low Countries (2010)

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See detailImprimeurs en Brabant et en Flandre sous Philippe le Beau
Adam, Renaud ULg

Scientific conference (2008, November 22)

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See detailImprimeurs en Flandre et en Brabant au temps de Philippe le Beau (1494-1506)
Adam, Renaud ULg

Scientific conference (2006, December 14)

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See detailImprimeurs et société dans les Pays-Bas méridionaux et en principauté de Liège (1473-ca 1520)
Adam, Renaud ULg

Doctoral thesis (2011)

La thématique placée au centre de cette dissertation doctorale pourrait se résumer à cette question : comment les premiers imprimeurs se sont intégrés au tissu socio-économique des Pays-Bas méridionaux et ... [more ▼]

La thématique placée au centre de cette dissertation doctorale pourrait se résumer à cette question : comment les premiers imprimeurs se sont intégrés au tissu socio-économique des Pays-Bas méridionaux et de la principauté de Liège aux tournants des XVe et XVIe siècles ? Cette étude a été structurée autour de trois axes. La vétusté des synthèses sur le sujet et l’évolution constante de la recherche ont rapidement imposé la nécessité de réécrire en premier lieu un historique détaillé, ville par ville, de l’introduction de l’art typographique et de son évolution jusqu’en 1520. Les regards se sont ensuite portés sur le métier d’imprimeur avec des questionnements centrés sur le statut juridique et l’organisation de cette profession, sur le fonctionnement interne d’une imprimerie ainsi que sur la commercialisation des livres et le profil de la clientèle. Les résultats de la dernière partie sont le fruit d’une investigation dans la composition de la communauté typographique et d’une tentative de décorticage des trames réticulaires nouées avec les autres acteurs de la société urbaine. [less ▲]

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See detailImprint and Brush Cytology in the Diagnosis of Canine Intranasal Tumours
Clercx, Cécile ULg; Wallon, J.; Gilbert, S. et al

in Journal of Small Animal Practice (1996), 37(9), 423-7

Fifty-four dogs with nasal tumours were included in this study. Based on histopathology 52 tumours were malignant (36 epithelial and 16 mesenchymal) and two were benign (one oncocytoma and one ... [more ▼]

Fifty-four dogs with nasal tumours were included in this study. Based on histopathology 52 tumours were malignant (36 epithelial and 16 mesenchymal) and two were benign (one oncocytoma and one pleiomorphic adenoma). Malignancy was significantly more frequently diagnosed by imprint cytology (81 per cent of the cases) than by brush cytology (56 per cent). Brush cytology was a significantly more sensitive technique in epithelial than in mesenchymal tumours, while the sensitivity of imprint cytology was not affected by the histological type. Brush cytology determined an epithelial origin in 88 per cent of epithelial tumours, and imprint cytology in 90 per cent. In mesenchymal tumours, the scores were significantly lower, the histological type being determined in only 20 per cent and 50 per cent, using brush and imprint cytology, respectively. [less ▲]

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See detailAn imprinted QTL with major effect on muscle mass and fat deposition maps to the IgfII locus in pigs
Nezer, C.; Moreau, L.; Brouwers, B. et al

in Nature Genetics (1999), 21

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See detailImprinting superconducting vortex footsteps in a magnetic layer
Brisbois, Jérémy ULg; Motta, Maycon; Avila Osses, Jonathan ULg et al

in Scientific Reports (2016), 6

Local polarization of a magnetic layer, a well-known method for storing information, has found its place in numerous applications such as the popular magnetic drawing board toy or the widespread credit ... [more ▼]

Local polarization of a magnetic layer, a well-known method for storing information, has found its place in numerous applications such as the popular magnetic drawing board toy or the widespread credit cards and computer hard drives. Here we experimentally show that a similar principle can be applied for imprinting the trajectory of quantum units of flux (vortices), travelling in a superconducting film (Nb), into a soft magnetic layer of permalloy (Py). In full analogy with the magnetic drawing board, vortices act as tiny magnetic scribers leaving a wake of polarized magnetic media in the Py board. The mutual interaction between superconducting vortices and ferromagnetic domains has been investigated by the magneto-optical imaging technique. For thick Py layers, the stripe magnetic domain pattern guides both the smooth magnetic flux penetration as well as the abrupt vortex avalanches in the Nb film. It is however in thin Py layers without stripe domains where superconducting vortices leave the clearest imprints of locally polarized magnetic moment along their paths. In all cases, we observe that the flux is delayed at the border of the magnetic layer. Our findings open the quest for optimizing magnetic recording of superconducting vortex trajectories. [less ▲]

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See detailImprints of glacial refugia in the modern genetic diversity of Pinus sylvestris
Cheddadi, R.; Vendramin, G. G.; Litt, T. et al

in Global Ecology And Biogeography (2006), 15(3), 271-282

Aim To understand the impact of glacial refugia and migration pathways on the modern genetic diversity of Pinus sylvestris. Location The study was carried out throughout Europe. Methods An extended set of ... [more ▼]

Aim To understand the impact of glacial refugia and migration pathways on the modern genetic diversity of Pinus sylvestris. Location The study was carried out throughout Europe. Methods An extended set of data of pollen and macrofossil remains was used to locate the glacial refugia and reconstruct the migrating routes of P. sylvestris throughout Europe. A vegetation model was used to simulate the extent of the potential refugia during the last glacial period. At the same time a genetic survey was carried out on this species. Results The simulated distribution of P. sylvestris during the last glacial period is coherent with the observed fossil data, which showed a patchy distribution of the refugia between c. 40 degrees N and 50 degrees N. Several migrational fronts were detected within the Iberian and the Italian peninsulas, and outside the Hungarian plain and around the Alps. The modern mitochondrial DNA depicted three different haplotypes for P. sylvestris. Two distinct haplotypes were restricted to northern Spain and Italy, and the third haplotype dominated most of the present-day remaining distribution range of P. sylvestris in Europe. Main concluions During the last glacial period P. sylvestris was constrained under severe climatic conditions to survive in scattered and restricted refugial areas. Combining palaeoenvironmental data, vegetation modelling and the genetic data, we have shown that the long-term isolation in the glacial refugia and the migrational process during the Holocene have played a major role in shaping the modern genetic diversity of P. sylvestris in Europe. [less ▲]

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See detailImprints of the quasar structure in time-delay light curves: Microlensing-aided reverberation mapping
Sluse, Dominique ULg; Tewes, M.

in Astronomy and Astrophysics (2014), 571(A60), 10

Owing to the advent of large area photometric surveys, the possibility to use broad band photometric data, instead of spectra, to measure the size of the broad line region of active galactic nuclei, has ... [more ▼]

Owing to the advent of large area photometric surveys, the possibility to use broad band photometric data, instead of spectra, to measure the size of the broad line region of active galactic nuclei, has raised a large interest. We describe here a new method using time-delay lensed quasars where one or several images are affected by microlensing due to stars in the lensing galaxy. Because microlensing decreases (or increases) the flux of the continuum compared to the broad line region, it changes the contrast between these two emission components. We show that this effect can be used to effectively disentangle the intrinsic variability of those two regions, offering the opportunity to perform reverberation mapping based on single band photometric data. Based on simulated light curves generated using a damped random walk model of quasar variability, we show that measurement of the size of the broad line region can be achieved using this method, provided one spectrum has been obtained independently during the monitoring. This method is complementary to photometric reverberation mapping and could also be extended to multi-band data. Because the effect described above produces a variability pattern in difference light curves between pairs of lensed images which is correlated with the time-lagged continuum variability, it can potentially produce systematic errors in measurement of time delays between pairs of lensed images. Simple simulations indicate that time-delay measurement techniques which use a sufficiently flexible model for the extrinsic variability are not affected by this effect and produce accurate time delays. [less ▲]

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