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See detailFiltering inertia-gravity waves from the initial conditions of the linear shallow water equations
Barth, Alexander ULg; Beckers, Jean-Marie ULg; Alvera Azcarate, Aïda ULg et al

in Ocean Modelling (2007), 19(3-4), 204-218

A method for filtering inertia-gravity waves from elevation and depth-averaged velocity is described. This filtering scheme is derived from the linear shallow water equations for constant depth and ... [more ▼]

A method for filtering inertia-gravity waves from elevation and depth-averaged velocity is described. This filtering scheme is derived from the linear shallow water equations for constant depth and constant Coriolis frequency. The filtered solution is obtained by retaining only the eigenvectors corresponding to the geostrophic equilibrium and by discarding explicitly the eigenvectors corresponding to the fast moving inertia-gravity waves. An alternative formulation is derived using a variational approach. Both filtering methods are tested numerically for a periodic domain with constant depth and the variational approach is implemented for a closed domain with large topographic variations. The filtering methods significantly reduce the amplitudes of the inertia-gravity waves while preserving the mean flow. The variational method is compared to the Incremental Analysis Update technique and the benefits of the variational filter are presented. (C) 2007 Elsevier Ltd. All rights reserved. [less ▲]

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See detailLa théorie optique du chapitre VI de la Prakaranapañcikâ de Shâlikanâtha
Verpoorten, Jean-Marie ULg

in Preisendanz, Karin (Ed.) Expanding and Merging Horizons. Contributions to South-Asian and Cross-cultural Studies in commemoration of W.Halbfass (2007)

Extrait du ch.6 de la Prakaraņapañcikā, somme philosophique selon la Mīmāṃsā rédigée entre 800 et 950 de n.è. par Śalikanātha (Ś), disciple de Prabhākara. Ś fait précéder sa propre définition de la ... [more ▼]

Extrait du ch.6 de la Prakaraņapañcikā, somme philosophique selon la Mīmāṃsā rédigée entre 800 et 950 de n.è. par Śalikanātha (Ś), disciple de Prabhākara. Ś fait précéder sa propre définition de la perception visuelle de définitions proposées par des penseurs d’autres courants philosophiques : bouddhisme, nyāya-vaiśeṣika, mīmāṃsā d’obédience kumārilienne. La portion traduite et commentée s’étend de la p.129, li.2 (dans l’édition de A Subrahmanya Sastri ,Bénarès, 1961) à la p.131, li.9.du ch. consacré aux moyens de connaissance droite (pramāņa’s) et au plus important d’entre eux, la perception. Ś y énumère les divers contacts possibles selon l’école rivale du Nyāya-vaiśeṣika avant de définir celui qui s’établit entre l’œil et le monde extérieur. Voici quelques-unes des questionss soulevées : -l’organe visuel illumine l’objet et en saisit la forme-couleur grâce à des rayons qui partent à la rencontre de cet objet, et ce même si l’objet est plus grand qu’eux. -comment envisager l’intervalle entre le siège corporel de la vue et l’objet appréhendé ? Mais y-at-il réellement un intervalle puisque les rayons visuels contactent cet objet. -comment évaluer la distance œil-objet ? Cela va-t-il de soi que l’œil va du plus proche au plus éloigné ? Si l’œil suit le chemin inverse, est-ce que le déplacement vers l’objet existe-t-il ? Des réponses sont apportées -l’évaluation de la distance se fait par rapport au corps. -on propose que le rayon visuel se fonde dans la lumière ambiante omniprésente. Mais alors ne devrait-on pas voir tout en même temps ? Faute de solution, on en appelle à l’adṛṣṭa, au « (facteur) invisible » qui n’est qu’une façon de déguiser son ignorance. -si le rayon visuel reçoit le soutien de la lumière ambiante, comment expliquer qu’un écran empêche la vision ? cet écran prouvant a contrario que le rayon se déplace vers l’objet. -la vision provient-elle de la toute-puissance de l’esprit ? ne vaut-il pas mieux se passer de celle-ci et expliquer l’étendue et l’intensité de la vision grâce aux seules limites de l’organe oculaire ? -faisons enfin une place aux objets inaccessibles à l’œil , les atomes, le temps, l’espace, l’esprit. [less ▲]

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See detailLes systèmes de santé et leurs acteurs. Quels défis pour la résolution des conflits dans la région des Grands Lacs africains?
Porignon, Denis ULg

in Remacle, E; Rosoux, V; Saur, L (Eds.) L'Afrique des Grands Lacs (2007)

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See detailBiomass production in experimental grasslands of different species richness during three years of climate warming
de Boeck, H. J.; Lemmens, CMHM; Gielen, B. et al

in Biogeosciences Discussions (2007), 4

Here we report on the single and combined impacts of climate warming and species richness on the biomass production in experimental grassland communities. Projections of a future warmer climate have ... [more ▼]

Here we report on the single and combined impacts of climate warming and species richness on the biomass production in experimental grassland communities. Projections of a future warmer climate have stimulated studies on the response of terrestrial ecosystems to this global change. Experiments have likewise addressed the importance of species numbers for ecosystem functioning. There is, however, little knowledge on the interplay between warming and species richness. During three years, we grew experimental plant communities containing one, three or nine grassland species in 12 sunlit, climate-controlled chambers in Wilrijk, Belgium. Half of these chambers were exposed to ambient air temperatures (unheated), while the other half were warmed by 3 degrees C (heated). Equal amounts of water were added to heated and unheated communities, so that warming would imply drier soils if evapotranspiration was higher. Biomass production was decreased due to warming, both aboveground (-29%) and belowground (-25%), as negative impacts of increased heat and drought stress in summer prevailed. Complementarity effects, likely mostly through both increased aboveground spatial complementarity and facilitative effects of legumes, led to higher shoot and root biomass in multi-species communities, regardless of the induced warming. Surprisingly, warming suppressed productivity the most in 9-species communities, which may be attributed to negative impacts of intense interspecific competition for resources under conditions of high abiotic stress. Our results suggest that warming and the associated soil drying could reduce primary production in many temperate grasslands, and that this will not necessarily be mitigated by efforts to maintain or increase species richness. [less ▲]

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See detailVers la validation d'un modèle de la compétence managériale
De Zanet, Fabrice ULg; Dujardin, Jean-Marie ULg; Stinglhamber, Florence et al

in Personnel et Gestion (2007), 10

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See detailQualité de vie et locked-in syndrome
Bruno, Marie-Aurélie ULg; Pellas, Frederique; Bernheim, Jan et al

in Pellas, Frederique; Kiefer, C; Weiss, JJ (Eds.) et al Entretiens de Médecine Physique et de Réadaptation (2007)

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See detailL'art de choisir: une question de style
Pâques, Michel ULg

in Annales de Droit de Louvain (2007), (4), 351-354

teaching of law, choice of topics to be taught, how to present them, academic freedom

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See detailLe cheval en Mésopotamie, des origines à l’époque néo-assyrienne
Van der Stede, Véronique ULg

in Cattelain, Pierre; Bozet, Nathalie (Eds.) Sur la piste du cheval. De la préhistoire à l’antiquité (2007)

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See detailRegards critiques, conférence-débat avec G. Banu et B. Tackels autour de L’Acte inconnu de Valère Novarina
Dubouclez, Olivier ULg; Banu, Georges; Tackels, Bruno

Speech/Talk (2007)

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See detailPregnancy-Associated Glycoprotein 75 [Fragment] from Bubalus bubalis placenta - Access number P85048
Barbato, O.; Melo de Sousa, Noelita ULg; Debenedetti, A. et al

E-print/Working paper (2007)

N-terminal microsequence obtained after purification and characterization of placental proteins in Bubalus bubalis. Proteins were submitted to SwissProt databank.

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See detailQuantification of Tropospheric Activity according to Double Differences Analysis of GNSS Phases Records.
Brenot, Hugues; Lejeune, Sandrine; Wautelet, Gilles ULg et al

Conference (2007)

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See detailClinical comparison in BMD gains with monthly oral ibandronate (150 mg) and weekly oral alendronate (70 mg) : results from the MOTION study
Miller, P. D.; Zerbini, C. A. F.; Recker, R. R. et al

in Journal of Bone and Mineral Research (2007), 22(S1), 451

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See detailLa sfida di non farsi leggere : Appunti intorno a Tristano muore (2004) di Tabucchi e Alla cieca (2005) di Magris
Curreri, Luciano ULg

in Barwig, Angela; Stauder, Thomas (Eds.) Intellettuali italiani del secondo Novecento (2007)

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See detail“L’occulte au fond de tous”. Introduction au mystère dans les lettres
Durand, Pascal ULg

in Reggiani, Chr; Magné, B. (Eds.) Écrire l’énigme (2007)

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See detailMigrations and family law
Carlier, Jean-Yves ULg; Sarolea, Sylvie

in Meeusen, Johan; Pertegas, Marta; Straetmans, Gert (Eds.) et al International Family Law for the European Union (2007)

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See detailLe syndrome Piro-like chez le cheval
Sandersen, Charlotte ULg; Pittel, PH; Amory, Hélène ULg

in Proceedins of the 24th Annual Congress of the Belgian Equine Practitioners Society (BEPS) (2007)

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See detailL'"étranger" au pays de sumer à l'époque de la troisième dynastie d'Ur
Colonna d'Istria, Laurent ULg; Louis, Philippe

in Riaud, Jean (Ed.) L'étranger dans la Bible et ses lectures (2007)

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See detailHybridization And Sexual Reproduction In The Invasive Alien Fallopia (Polygonaceae) Complex In Belgium
Tiebre, Ms.; Vanderhoeven, Sonia ULg; Saad, Layla ULg et al

in Annals of Botany (2007), 99(1), 193-203

† Background and Aims The knotweed complex, Fallopia spp. (Polygonaceae), belongs to the most troublesome invasive species in Europe and North America. Vegetative regeneration is widely recognized as the ... [more ▼]

† Background and Aims The knotweed complex, Fallopia spp. (Polygonaceae), belongs to the most troublesome invasive species in Europe and North America. Vegetative regeneration is widely recognized as the main mode of reproduction in the adventive regions. However, the contribution of sexual reproduction to the success of these invasive species has only been detailed for the British Isles. An examination was made as to how hybridization may influence the sexual reproduction of the complex in Belgium and to determine how it may contribute to the dispersal of the species. † Methods Studies were made of floral biology, reproductive success, seed rain, seed bank, germination capacity, seedling survival and dispersal capacity in order to characterize the reproductive biology of the species. Moreover, chromosome counts and flow cytometry were used to assess the hybrid status of seedlings produced by sexual reproduction. † Key Results In the area investigated, extensive sexual reproduction by hybridization within the complex, including one horticultural species, was demonstrated. A small percentage of seeds may be dispersed outside the maternal clone (.16 m) allowing the formation of genetically differentiated individuals. Seed germination was possible even after a winter cold period. †Conclusions The extensive sexual reproduction by hybridization could further contribute to the dramatic invasive success of knotweeds in Belgium and should not be underestimated when considering control and management measures. [less ▲]

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See detailPhosphorylated HER-2 tyrosine kinase and Her-2/neu gene amplification as predictive factors of response to trastuzumab in patients with HER-2 overexpressing metastatic breast cancer (MBC).
Giuliani, Rosa; Durbecq, Virginie; Di Leo, Angelo et al

in European Journal of Cancer (2007), 43(4), 725-35

AIM: Trastuzumab (T), a humanised monoclonal antibody against HER-2, is active in HER-2-positive MBC patients. However, nearly 60% of the patients do not benefit from T, stressing the need for additional ... [more ▼]

AIM: Trastuzumab (T), a humanised monoclonal antibody against HER-2, is active in HER-2-positive MBC patients. However, nearly 60% of the patients do not benefit from T, stressing the need for additional predictive markers. The following markers could be implicated in response to T: (1) the magnitude of Her-2 gene amplification; (2) the co-expression of the other HER family receptors, possibly responsible for HER-2 trans-activation; (3) the activated status of HER-2; (4) the activated status of downstream effectors as mitogen-activated protein kinases (MAPKs), p38 and p27. METHODS: Medical files of patients with MBC treated with T either as a single agent or in combination with chemotherapy (CT) were reviewed. HER family members (EGFR, HER-2, HER-3, HER-4), the phosphorylated forms of EGFR (p-EGFR), HER-2 (p-HER-2) and of the downstream effectors were evaluated in the archival tumours. The correlation between clinical outcome and the expression of these markers was investigated. RESULTS: (1) Increasing values of Her-2 amplification were associated with a higher probability of achieving an objective response; (2) no statistical significant correlation between the expression of the HER family receptors was found; (3) p-HER-2 was predictive of response in patients treated with T+CT; (4) a statistically significant correlation between p-ERK 1/2, p-p38 and p-HER-2 emerged, pointing to the activated vertical pathway p-HER-2-->p-MAPKs. CONCLUSIONS: p-HER-2 and the magnitude of Her-2 amplification were predictive of response to T and their role deserves to be analysed in larger and more homogenous T-treated populations such as those from large phase III trials. [less ▲]

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See detailEditorial Report 2006
Denoël, Mathieu ULg

in Amphibia-Reptilia (2007), 28(3), 455-456

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