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See detailDetermination of plant height for weed detection in stereoscopic images
Piron, Alexis ULg; Leemans, Vincent ULg; Kleynen, Olivier et al

in AGENG 2008 Conference - Agricultural & Biosystems Engineering for a Sustainable World (2008)

The aim of this study was twofold. The first goal was to acquire high accuracy stereoscopic images of small-scale field scenes, the second to examine the potential of plant height as a discriminant factor ... [more ▼]

The aim of this study was twofold. The first goal was to acquire high accuracy stereoscopic images of small-scale field scenes, the second to examine the potential of plant height as a discriminant factor between crop and weed, within carrot rows. Emphasis was put on how to determine actual plant height taking into account the variable distance from camera to ground and ground irregularities for in-field measurements. Multispectral stereoscopic images were taken over a period of 19 days starting one week after crop emergence and seven weed species were considered. Images were acquired with a mobile vision system consisting in a filter wheel based multispectral camera and a video projector. The stereoscopy technique used belonged to the coded structured light family. The stereoscopic acquisition method yielded good results despite the numerous stereoscopic difficulties exhibited by the scenes. A plant height parameter as opposed to distance from camera to plant pixels gave better results for classification (classification accuracy of up [less ▲]

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See detailNew observations on some Upper Devonian brachiopods from the Namur-Dinant Basin (Belgium)
Mottequin, Bernard ULg

in Geodiversitas (2008), 30

Brachiopods (Productida [except Chonetidina], Orthida, Athyridida, Spiriferida [Adolfiidae, Reticulariidae, Ambocoeliidae, Thomasariidae], and Spiriferinida) recovered in the interval, in terms of the ... [more ▼]

Brachiopods (Productida [except Chonetidina], Orthida, Athyridida, Spiriferida [Adolfiidae, Reticulariidae, Ambocoeliidae, Thomasariidae], and Spiriferinida) recovered in the interval, in terms of the standard conodont zonation, between the Palmatolepis hassi and P. triangularis zones (Late Middle Frasnian to Early Famennian) in the Namur-Dinant Basin (Belgium) are described. The orders and suborders investigated include 32 species: 21 are described in open nomenclature, seven are previously known, four are new of which three are assigned to previously known genera: Aulacella aggeris n. sp., Dicamara plutonis n. sp., and Warrenella (Warrenella) aquaealbae n. sp. Th e fourth species belonging to a newly defined genus: Neptunathyris buxi n. gen., n. sp. A major brachiopod faunal change occurs at the top of the P. rhenana Zone in southern Belgium, with the disappearance of most existing species in parallel with the deterioration of the oxygenation conditions preceding the Upper Kelwasser Event. Only an impoverished fauna (Lingulida, Chonetidina, Rhynchonellida) has been collected in the P. linguiformis Zone. The recovery of the Famennian brachiopods after the end-Frasnian biotic crisis was rapid in the basal Famennian but, despite their great abundance, their diversity was relatively low. New cosmopolitan genera appeared at this time especially among the rhynchonellids, athyridids and spiriferids with new species of pre-existing orthid and orthotetid genera. [less ▲]

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See detailModelling The Effect Of Temperature, Water Activity And Solute On The In Vitro Growth Of The Biocontrol Yeast Pichia Anomala Strain K
Lahlali, R.; Bajji, M.; Serrhini, Mn. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2008), 12(4),

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See detailGeography and host biogeography matter for understanding the phylogeography of a parasite.
Nieberding, Caroline M. ULg; Durette-Desset, Marie-Claude; Vanderpoorten, Alain ULg et al

in Molecular Phylogenetics & Evolution (2008), 47(2), 538-54

The co-evolution between hosts and parasites has long been recognized as a fundamental driver of macro-evolutionary patterns of diversification. The effect of co-differentiation on parasite ... [more ▼]

The co-evolution between hosts and parasites has long been recognized as a fundamental driver of macro-evolutionary patterns of diversification. The effect of co-differentiation on parasite diversification is, however, often confounded by underlying geographic patterns of host distribution. In order to disentangle the confounding effects of allopatric versus host speciation, the mitochondrial cytochrome b (cyt b) gene was sequenced in seventy individuals of the parasitic nematode genus Heligmosomoides sampled in the six Apodemus mice species common in the western Palearctic region. The nuclear internal transcribed spacers (ITS) 1 and 2 were also sequenced in fifteen parasites to confirm the mitochondrial data. All lineages differentiated according to a geographic pattern and independently from the sampled host species. This suggests that host speciation did not involve concurrent parasite speciation. However, the geographic distribution range of some parasite lineages mirrors that of A. sylvaticus lineages in SW Europe, and that of A. flavicollis lineages in the Balkans and in the Middle East. Thus, regional co-differentiation likely occurred between the parasite and the two sister Apodemus hosts in different parts of their distribution range. We suggest that differences in regional abundances of A. sylvaticus and A. flavicollis are responsible for generating this pattern of regional co-differentiation. This study highlights the importance of integrating both geography and biogeographic information from potential hosts to better understand their parasite phylogeography. [less ▲]

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See detailMalignant catarrhal fever induced by alcelaphine herpesvirus 1 is associated with proliferation of CD8+ T cells supporting a latent infection.
Dewals, Benjamin G ULg; Boudry, Christel ULg; Farnir, Frédéric ULg et al

in PLoS ONE (2008), 3(2), 1627

Alcelaphine herpesvirus 1 (AlHV-1), carried by wildebeest asymptomatically, causes malignant catarrhal fever (WD-MCF) when cross-species transmitted to a variety of susceptible species of the Artiodactyla ... [more ▼]

Alcelaphine herpesvirus 1 (AlHV-1), carried by wildebeest asymptomatically, causes malignant catarrhal fever (WD-MCF) when cross-species transmitted to a variety of susceptible species of the Artiodactyla order. Experimentally, WD-MCF can be induced in rabbits. The lesions observed are very similar to those described in natural host species. Here, we used the rabbit model and in vivo 5-Bromo-29-Deoxyuridine (BrdU) incorporation to study WD-MCF pathogenesis. The results obtained can be summarized as follows. (i) AlHV-1 infection induces CD8+ T cell proliferation detectable as early as 15 days postinoculation. (ii) While the viral load in peripheral blood mononuclear cells remains below the detection level during most of the incubation period, it increases drastically few days before death. At that time, at least 10% of CD8+ cells carry the viral genome; while CD11b+, IgM+ and CD4+ cells do not. (iii) RT-PCR analyses of mononuclear cells isolated from the spleen and the popliteal lymph node of infected rabbits revealed no expression of ORF25 and ORF9, low or no expression of ORF50, and high or no expression of ORF73. Based on these data, we propose a new model for the pathogenesis of WD-MCF. This model relies on proliferation of infected CD8+ cells supporting a predominantly latent infection. [less ▲]

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See detailCharacterization of the development of a behavioural sensitization in female Swiss mice
Didone, Vincent ULg; Quertemont, Etienne ULg

in Behavioural Pharmacology (2008), 19(5-6), 30-30

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See detailRobinson Chase F. (ed.), Texts, Documents and Artefacts. Islamic Studies in Honour of D.S. Richards
Bauden, Frédéric ULg

in Bulletin Critique des Annales Islamologiques (2008), 24

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See detailAlternative modelling of body condition score from Walloon Holstein cows to develop management tools
Bastin, Catherine ULg; Laloux, Laurent; Gillon, Alain ULg et al

in Proceedings ICAR 36th Session (2008)

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See detailDroit de la construction et de la promotion immobilière en Europe. Vers une harmonisation de la protection du consommateur en droit de la construction ?
Kohl, Benoît ULg

Book published by Bruylant (2008)

Dans plusieurs Etats membres de l’Union européenne, des dispositions particulières ont été adoptées, en marge du droit de la construction et de la promotion immobilière, pour assurer une protection ... [more ▼]

Dans plusieurs Etats membres de l’Union européenne, des dispositions particulières ont été adoptées, en marge du droit de la construction et de la promotion immobilière, pour assurer une protection particulière au consommateur dans le secteur du logement. Pour un juriste européen, cette observation conduit à s’interroger sur les perspectives d’harmonisation du droit de la construction et de la promotion immobilière, puisque la politique de protection des consommateurs constitue désormais une compétence législative autonome de l’Union européenne. Dans cet ouvrage, l’auteur, après avoir rappelé le contexte de l’harmonisation du droit privé dans le secteur de la construction, exprime sa préférence pour une harmonisation spécifique, limitée – du moins dans un premier temps – au seul secteur résidentiel. Aussi procède-t-il à la comparaison des mesures de protections dont bénéficie le consommateur, en droit de la construction et de la promotion immobilière, dans différents Etats membres de l’Union européenne ; une attention particulière est portée aux mécanismes d’autorégulation, qui, dans certains pays, résident au cœur de l’organisation de la protection du consommateur de la construction. L’auteur analyse l’impact de ces mesures ainsi que leur intégration dans l’acquis communautaire, de manière à pouvoir dégager des principes communs en matière de protection du consommateur européen et à formuler, de lege ferenda, des propositions d’harmonisation. La faisabilité d’une telle harmonisation par le recours à la méthode de corégulation est également analysée et certaines pistes nouvelles sont tracées dans cette perspective. L’ouvrage est issu de la thèse de doctorat en sciences juridiques que l’auteur a soutenue à la Faculté de Droit de l’Université de Liège en 2008. [less ▲]

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See detailPreferential transmission of Gossypium sturtanium chromosome fragments in the progeny of [(G. hirsutum x G. raimondii)2 x G. sturtanium] trispecies hybrid
Benbouza, H.; Diouf F.B.H.; Ndir, K. et al

in Proceedings of World cotton research conference IV (2008)

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See detailDe la distinction au stigmate, Matonge, un quartier congolais dans Bruxelles
Demart, Sarah ULg

in Cahiers de la Fonderie (2008), 38

Les formes d’investissement de l’espace social et territorial de la Belgique par les Congolais, au lendemain de la colonisation, ne correspondent en rien aux catégorisations actuelles de l’immigration ... [more ▼]

Les formes d’investissement de l’espace social et territorial de la Belgique par les Congolais, au lendemain de la colonisation, ne correspondent en rien aux catégorisations actuelles de l’immigration. C’est seulement à la fin des années ’80, que l’on pourra parler d’une immigration économique. Or, dès les années ’60, les Congolais commencent à venir en Belgique dans un cadre estudiantin, diplomatique, “touristique” ou commerçant. De façon progressive, un territoire dans la Ville de Bruxelles va être investi par les Congolais, résidents ou en transit, autour de quelques points de concentration. [less ▲]

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See detailLa linéarité comme métadiscours dans l’oeuvre de Murray Bail
Herbillon, Marie ULg

in MethIS : Méthodes et Interdisciplinarité en Sciences Humaines (2008), 1

Si d’aucuns ont relevé, chez Murray Bail, une propension à la géométrisation des espaces textuels, nul n’a souligné la fonction politico-parodique de la ligne droite dans l’oeuvre de cet écrivain ... [more ▼]

Si d’aucuns ont relevé, chez Murray Bail, une propension à la géométrisation des espaces textuels, nul n’a souligné la fonction politico-parodique de la ligne droite dans l’oeuvre de cet écrivain australien contemporain. En feignant de souscrire à la culture de la linéarité, ce dernier vise pourtant à la dénoncer et, avec elle, un certain héritage occidental. Cette réflexion prend, à l’occasion, un tour métafictionnel : bien que ses intentions parodiques aient pu le contraindre à emprunter au réalisme traditionnel certains de ses codes narratifs, Bail a longtemps cherché à discréditer ce genre littéraire trop linéaire. Avec Eucalyptus (1998), l’auteur parvient toutefois à transcender la linéarité structurelle apparente de ses premiers romans. Cet article explore les manières dont Bail s’est approprié le réalisme et/ou l’a transgressé pour, en définitive, mieux l’intégrer à la littérature australienne. [less ▲]

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See detailStress oxydant et antioxydants: mythes et réalités.
Defraigne, Jean-Olivier ULg; Pincemail, Joël ULg

in Revue Médicale de Liège (2008), 63

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See detailExpression profiling of senescent-associated genes in human dermis from young and old donors. Proof-of-concept study.
Borlon, Celine; Weemaels, Geoffroy; Godard, Patrice et al

in Biogerontology (2008), 9(3), 197-208

It is often described that it is difficult to really discriminate the cause of intrinsic skin aging. The aim of this study was to compare the profiles of expression of senescence-associated genes in ... [more ▼]

It is often described that it is difficult to really discriminate the cause of intrinsic skin aging. The aim of this study was to compare the profiles of expression of senescence-associated genes in biopsies of dermis from young and old human donors. TGF-beta1 was up-regulated in the dermis of old donors as well as the TGF-beta1-regulated genes. The anti-oxidant enzymes Selenium-dependent Glutathione peroxidase and Glutatione S-Transferase Theta 1 were also up-regulated in old dermis as well as Tumor Necrosis Factor Receptor Superfamily 1A. None of these genes had altered expression level in skin fibroblasts embedded in a collagen matrix and exposed to sublethal doses of UVB, suggesting their involvement in intrinsic aging. This study represents a proof-of-concept of larger whole transcriptome studies where all avenues should be used to subtract changes in gene expression due to extrinsic aging from changes potentially due to intrinsic aging. [less ▲]

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See detailTissue-specific induction of ADAMTS2 in monocytes and macrophages by glucocorticoids.
Hofer, Thomas P J; Frankenberger, Marion; Mages, Jorg et al

in Journal of Molecular Medicine : Official Organ of the 'Gesellschaft Deutscher Naturforscher und Ärzte' (2008), 86(3), 323-32

The regulated expression of ADAMTS2 (a disintegrin and metalloproteinase with thrombospondin motifs), a secreted metalloproteinase involved in the processing of procollagen to collagen, was studied in ... [more ▼]

The regulated expression of ADAMTS2 (a disintegrin and metalloproteinase with thrombospondin motifs), a secreted metalloproteinase involved in the processing of procollagen to collagen, was studied in peripheral blood mononuclear cells (PBMC). Stimulation with glucocorticoids (GC) resulted in a pronounced dose- and time-dependent increase of ADAMTS2 mRNA levels in PBMC. The increase of ADAMTS2 expression was specific for CD14++ monocytes (440-fold) and alveolar macrophages (200-fold), whereas CD3+ (T lymphocytes), phytohemagglutinin-activated CD3+ (T lymphocytes), and CD19+ (B lymphocytes) showed no significant changes in ADAMTS2 mRNA after GC treatment. Treatment of monocyte-derived macrophages (MDM) with GC also resulted in an increase of ADAMTS2 protein in the culture tissue media. Using the GC analog RU486, GC-mediated induction of ADAMTS2 mRNA was blocked, implicating that GC acts specifically via the GC-receptor. In agreement with findings in blood monocytes, cell lines of the monocytic lineage (MM6, THP-1) showed significant GC-induced significant increases in ADAMTS2 mRNA, while in epithelial cells (A549, Calu-3, Colo320, BT-20) and fibroblast (MRC-5, WI-38, and two NHDF-c cell types from adult cheek and upper arm), they showed no or little responsiveness to GC. As macrophages have important functions in immune defense and tissue homeostasis, these findings suggest that GC-mediated specific induction of ADAMTS2 in these cells may play a crucial role in the resolution of inflammation and wound repair. [less ▲]

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See detailDifferent regimes of nucleation of superconductivity in mesoscopic superconductor/ferromagnet hybrids
Schildermans, N.; Aladyshkin, A Yu; Silhanek, Alejandro ULg et al

in Physical Review. B : Condensed Matter (2008), 77(21),

The competition between two regimes of the nucleation of superconductivity is investigated experimentally and theoretically in a mesoscopic disk-shaped superconductor/ferromagnet hybrid. By changing the ... [more ▼]

The competition between two regimes of the nucleation of superconductivity is investigated experimentally and theoretically in a mesoscopic disk-shaped superconductor/ferromagnet hybrid. By changing the magnetic state of a multilayered Co/Pt disk one can reversibly affect the magnetic-field dependence of the critical temperature T(c)(H) of an Al layer. We demonstrate that an enhancement of the magnetic field near the edge of the out-of-plane magnetized disk either stimulates the nucleation of superconductivity at the disk perimeter due to the field compensation effect or prevents it due to edge magnetic barrier (for relatively low parallel to H parallel to values). As a consequence, the presence of such magnetic-field pattern makes it possible to eliminate boundary effects for mesoscopic superconducting samples. Switching from one nucleation regime to another while sweeping H leads to an abrupt change of the slope of the T(c)(H) envelope. [less ▲]

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See detailThe effects of cognitive remediation therapy on AM deficits in schizophrenia patients
Boulanger, Marie ULg; Collet, Denis; Cornet, Lidvine et al

Poster (2008)

Schizophrenia is accompanied by deficit in autobiographical memories (AM). These impairments are correlated to difficulties in imagining specific events that might happen to them in the future ... [more ▼]

Schizophrenia is accompanied by deficit in autobiographical memories (AM). These impairments are correlated to difficulties in imagining specific events that might happen to them in the future (D’Argembeau, Raffard et Van-der-Linden, 2008). Previous study suggested that the specific autobiographical memory (past and future) may be improved by an AM remediation therapy (Blairy et al., accepted). The aim of the present study was to compare performances from individuals involved in an AM remediation intervention to individuals involved in the cognitive remediation therapy program from Brenner (IPT) (Pomini, Neis, Brenner, Hodel et Roder, 1998). The results showed that the participants tend to recall more specific events after therapies, confounded pass and future events (t(7) = 3.28 ; p = .013). These results would be promising for future research. [less ▲]

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See detailcompte rendu de : Graham ANDERSON, Folktale as a Source of Graeco-Roman Fiction. The Origin of Popular Narrative
Rochette, Bruno ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (2008), 77

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