Publications ORBi OA
Bookmark and Share    
Full Text
See detailCytochemical and immunocytological study of the reptilian nucleolus
Lamaye, Françoise; Thiry, Marc ULg

Poster (2008)

Detailed reference viewed: 2 (2 ULg)
Full Text
Peer Reviewed
See detailInverse analysis in geotechnics: soil parameter identification by genetic algorithm
Levasseur, Séverine ULg; Malécot, Yann; Boulon, Marc et al

in 8th. World Congress on Computational Mechanics (WCCM8) & 5th. European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008) (2008)

Detailed reference viewed: 25 (1 ULg)
Full Text
Peer Reviewed
See detailLe lexique des lieux de culte dans la Périégèse de Pausanias
Pirenne-Delforge, Vinciane ULg

in Archiv für Religionsgeschichte (2008), 10

Detailed reference viewed: 73 (8 ULg)
Full Text
Peer Reviewed
See detailP. H. Liotta, the Graveyard of Fallen Monuments
Delville, Michel ULg

in Sentence: A Journal of Prose Poetics (2008), 7

Detailed reference viewed: 24 (1 ULg)
Full Text
Peer Reviewed
See detailMorton Marcus, Pursuing the Dream Bone
Delville, Michel ULg

in Sentence: A Journal of Prose Poetics (2008), 7

Detailed reference viewed: 14 (0 ULg)
Full Text
See detailPrise de décision en handball : point de vue interne des joueuses et externe du coach
Lenzen, Benoît; Theunissen, Catherine ULg; Cloes, Marc ULg

in Wallian, N.; Poggi, M. P.; Musard, E. (Eds.) Co-construire des savoirs: les métiers de l’intervention dans les APSA. Actes du colloque (2008)

Dans les sports collectifs, l’idée que le coach est le plus à même d’analyser le jeu depuis le bord du terrain et de décider des choix tactiques de ses joueurs est largement répandue. Vraie ou fausse ... [more ▼]

Dans les sports collectifs, l’idée que le coach est le plus à même d’analyser le jeu depuis le bord du terrain et de décider des choix tactiques de ses joueurs est largement répandue. Vraie ou fausse, elle pose la question de la dualité des points de vue interne des joueurs et externe du coach. Pour établir cette comparaison, nous avons soumis six joueuses de handball de haut niveau à des entretiens d’autoconfrontation portant sur des séquences vidéo enregistrées lors de deux matches de championnat. Parallèlement, nous avons utilisé la technique de « film occlusion » (Debanne, 2003) consistant à projeter ces séquences au coach en les interrompant juste avant l’action. Les tentatives du coach de prédire les choix tactiques opérés par ses joueuses se sont soldées par 15 propositions correctes contre 6 erronées. La comparaison des points de vue interne des joueuses et externe du coach est illustrée par quatre situations distinctes : prédictions (a) correcte d’une action négative ; (b) correcte d’une action positive ; (c) incorrecte d’une action négative ; et (d) incorrecte d’une action positive. La discussion souligne les convergences et les divergences entre ces deux points de vue, en insistant plus particulièrement sur les conséquences des divergences. [less ▲]

Detailed reference viewed: 230 (6 ULg)
Full Text
See detailLa notion de « populaire » est-elle applicable au polythéisme grec ?
Pirenne-Delforge, Vinciane ULg

in Bobas, C.; Evangelidis, E.; Milioni, T. (Eds.) et al Croyances populaires. Rites et représentations en Méditerranée orientale. Actes du Colloque de Lille (2-4 décembre 2004) (2008)

Detailed reference viewed: 51 (6 ULg)
Full Text
Peer Reviewed
See detailOntogenetic shape changes in Pomacentridae (Teleostei, Perciformes) and their relationships with feeding strategies: a geometric morphometric approach
Frederich, Bruno ULg; Adriaens, Dominique; Vandewalle, Pierre ULg

in Biological Journal of the Linnean Society (2008), 95

The present study explores the shape changes of cranial structures directly involved in food capturing during growth after reef settlement in two species of Pomacentridae (Dascyllus aruanus and ... [more ▼]

The present study explores the shape changes of cranial structures directly involved in food capturing during growth after reef settlement in two species of Pomacentridae (Dascyllus aruanus and Pomacentrus pavo). Landmark-based geometric morphometrics were used to study allometric patterns and related shape changes in four skeletal units: neurocranium, suspensorium and opercle, mandible and premaxilla. At settlement, the larvae of both species have a relatively similar morphology, especially with respect to the mandible. Their shapes suggest a feeding mode defined as ram/suction-feeding. Ontogenetic shape changes show a shift to a suction feeding mode of prey capture. The main transformations involved are an increase in height of the suspensorium and the opercle, an elevation of the supraoccipital crest, a relative shortening of the mandible, and a lengthening of the ascending process of the premaxilla. Shape changes of the mandible in the two studied species also reflect an increase of biting capacities. The high disparity between adult shape results from differences in the rate and in the length of ontogenetic trajectories, from divergence of the ontogenetic trajectories (neurocranium, mandible, and premaxilla) and parallel shifts of the trajectories in the size-shape space (suspensorium and opercle). In an evolutionary context, allometric heterochronies during ontogeny of different skeletal unit of the head may be considered as a basis for the explanation of the diversity of damselfishes. [less ▲]

Detailed reference viewed: 35 (6 ULg)
Full Text
Peer Reviewed
See detailThe tropical sea anemone Aiptasia pallida as a lab model for the study of coral bleaching
Ladrière, Ophélie ULg; Roberty, Stéphane ULg; Baudesson, Charlotte et al

Poster (2008)

Bleaching is still among major events threatening coral reefs. New tools have to be developped to better understand the mechanisms leading to this pathology : we studied the use of the hermatypic anemone ... [more ▼]

Bleaching is still among major events threatening coral reefs. New tools have to be developped to better understand the mechanisms leading to this pathology : we studied the use of the hermatypic anemone Aiptasia pallida as experimental model for coral bleaching. Aiptasia appears as a good candidate as it is easy to maintain in aquarium and subjected to bleaching like corals. Both morphological and physiological approaches were performed to investigate the ultrastructure of the anemone tissues (TEM) and the zooxanthellae photophysiology (chlorophyll a fluorescence, respiration and pigmentation). Experiments under light and dark stress reveal that anemone tissues ultrastructure can be differently affected. In darkness, the ectoderm activity is reoriented to capture prey by increasing cnidocyte density. In contrast, intense light affects especially the gastroderm : intercellular spaces increase, the expulsion of intact algae in the gastric cavity and the degradation of zooxanthellae inside vacuoles seem to reduce the zooxanthellae density, chloroplast thylakoids lose their parallel arrangement. The analysis of the fluorescence induction curve appears as a powerful tool to analyse the physiological events series previous to bleaching. Although no significant zooxanthellae density reduction was observed, the decrease of pigments concentrations indicates that light or dark stresses induce anemone bleaching. Under strong light intensity, A. pallida zooxanthellae show an increased proportion of PSII QB non reducing, leading to partial photoinhibition. This phenomenon favours the ROS production that damages cellular structures of host and zooxanthellae. In darkness, there is no photosynthesis; anemones have therefore to find other feeding sources, as suggested by the ultrastructural approach. As the present results confirm some of those obtained on scleractinians, A. pallida can be regarded as a good model for coral bleaching studies and has numerous advantages for experimentation. [less ▲]

Detailed reference viewed: 70 (6 ULg)
Full Text
See detailEvolution de l’économie rurale en Hainaut
Duquesne, Brigitte ULg

Conference (2008)

Detailed reference viewed: 11 (1 ULg)
Full Text
Peer Reviewed
See detailEvidence for neo-generation of T cells by the thymus after non-myeloablative conditioning.
Castermans, Emilie ULg; Baron, Frédéric ULg; Willems, Evelyne ULg et al

in Haematologica (2008), 93(2), 240-7

BACKGROUND: Background and objective. We investigated immune recovery in 50 patients given either unmanipulated or CD8-depleted allogeneic peripheral blood stem cells after non-myeloablative conditioning ... [more ▼]

BACKGROUND: Background and objective. We investigated immune recovery in 50 patients given either unmanipulated or CD8-depleted allogeneic peripheral blood stem cells after non-myeloablative conditioning. DESIGN AND METHODS: Fifty patients were randomized to receive either CD8-depleted (n=22) or non-manipulated (n=28) peripheral blood stem cells. The median patients age was 57 (range 36-69) years. The conditioning regimen consisted of 2 Gy total body irradiation with or without added fludarabine. Twenty patients received grafts from related donors, 14 from 10/10 HLA-allele matched unrelated donors, and 16 from HLA-mismatched unrelated donors. Graft-versus-host disease pro-phylaxis consisted of mycophenolate mofetil and cyclosporine. Immune recovery during the first year after hematopoietic cell transplantation was assessed by flow cytometry phenotyping, analyses of the diversity of the TCRBV repertoire, and quantification of signal-joint T-cell receptor excision circles (sjTREC). RESULTS: CD8-depletion of the graft reduced the recovery of CD8(+) T-cell counts in the first 6 months following transplantation (p<0.0001) but had no significant impact on the restoration of other T-cell subsets. Both sjTREC concentration and CD3(+) T-cell counts increased significantly between day 100 and 365 (p=0.010 and p=0.0488, respectively) demonstrating neo-production of T cells by the thymus. Factors associated with high sjTREC concentration 1 year after transplantation included an HLA-matched unrelated donor (p=0.029), a high content of T cells in the graft (p=0.002), and the absence of chronic graft-versus-host disease (p<0.0001). CONCLUSIONS: Our data suggest that while immune recovery is mainly driven by peripheral expansion of the graft-contained mature T cells during the first months after non-myeloablative transplantation, T-cell neo-generation by the thymus plays an important role in long term immune reconstitution in transplanted patients. [less ▲]

Detailed reference viewed: 168 (86 ULg)
Full Text
Peer Reviewed
See detailL’influence de l’anxiété sur l’excitation sexuelle : Vers une théorie cognitive
Kempeneers, Philippe ULg; Barbier, Valérie

in Sexologies (2008), 17(2), 66-75

For ages, anxiety has been pointed out as the main etiological factor for sexual dysfunction. Since Wolpe, Masters & Johnson and Kaplan, the understanding of the influence of stress on sexual reactions ... [more ▼]

For ages, anxiety has been pointed out as the main etiological factor for sexual dysfunction. Since Wolpe, Masters & Johnson and Kaplan, the understanding of the influence of stress on sexual reactions has greatly evolved. This article retraces the milestones of such an evolution. In two decades, the reciprocal inhibitory theory has been replaced by a theory describing more accurately the complex relationship between anxiety and excitation. The combined development of plethysmography and cognitive psychology has greatly contributed to clarify this relationship. Indeed, the relationship between anxiety and sexual arousal appears more complex than originally recognized. Plethysmography directly measures genital vasocongestion at presentation of erotic stimuli and thus permits an objective assessment of sexual arousal in varied circumstances (erotic, anxiety producing, neutral or distracting). In studies using this paradigm, anxiety appears to have a non linear influence on sexual arousal: sometimes it is inhibitory, other times it is facilitative. Articulating the results obtained using plethysmography with the latest development in cognitive sciences, the following hypothesis came to mind: erotophobia could be considered of factor of vulnerability towards cognitive interference. In a sexual situation, erotophobic subjects focus primarily upon danger related information. This could engender a massive irruption of non erotic cues (non relevant task information) in working memory. Therefore, cognitive function available for sexual arousal would be diminished and sexual activity would be impaired. This hypothesis brings light onto the inhibitory effect of anxiety on sexual arousal among dysfunctional subjects. When this cognitive interference is not present, anxiety rather reinforces sexual arousal: either by increasing the focus of attention towards sexual cues or by misinterpreting the physiological reactions induced by the stressful situation as being sexual in origin. [less ▲]

Detailed reference viewed: 189 (9 ULg)