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See detailMigration et déplacements du martin pêcheur Alcedo atthis en Europe
Libois, Roland ULg

in Aves (2011), 48(2), 65-86

Previous publications on the migration and movements of kingfisher s have been limitid to a few countries; there has not been any previous synthesis of the data from the whole of Europe. The present study ... [more ▼]

Previous publications on the migration and movements of kingfisher s have been limitid to a few countries; there has not been any previous synthesis of the data from the whole of Europe. The present study,based on the Euring database, related to the movements of 5991 ringed and recaptured birds. The data were classified according to the status of each individual (pulli, juvenile or adult) as noted at ringing, the time of year (autumn and winter; spring; breeding period), and general geographical area. In the first autumn and winter, half of the pulli remained in the nesting area. Those that did move (between 25 and 250 km) dispersed approximately equally in all directions. The tendency to migrate was most marked among birds born in Sweden. The tendency decreases progressively in the sequence North Europe/Central Europe/ North Western Europe, where only 5 % of birds migrate, moving in a southwesterly direction. Juvenile birds are less mobile (approximately 80 %) than the pulli. Those which do move have the same pattern of dispersion as the pulli. The tendency to migrate is especially marked in North Europe, and is almost non existent in Gread Britain and in the Mediterrannean peninsulas. In springtime, most birds are already nesting, but some migrate towards the N or NE, and some are delayed in their overwintering location. During the nesting period, the ex pulli rarely take over the burrow where they were born, while the majority of juveniles tend to remain in the area where they were first captured. Some adults do change area ot the time, this tendeny being more accentuated among females, while male birds appear to be more attached to their home territory. In subsequent autumns the patterns of dispersion, of distance and of direction of ex juveniles and ex pulli are indistinguishable from those of the first automn. In Sweden the adults migrate, whereas elswhere adults have similar behaviour as juvenile birds; but adults are even more sedentary. [less ▲]

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See detailMigration et environnement : brève introduction à une relation méconnue et souvent négligée
Gemenne, François ULg

in Etopia : Revue d'Economie Politique (2007), 3

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See detailMigration et mondialisation : les « nouveaux » flux migratoires
Florence, Eric ULg

Conference given outside the academic context (2002)

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See detailMigration in China’s Guangdong Province. Major Results of a 1993 Sample Survey on Migrants and Floating Population in Shenzhen and Foshan
Florence, Eric ULg

in Revue Bibliographique de Sinologie = Review of Bibliography in Sinology (1998), Vol. XVI

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See detailMigration in post-socialist China: cultural struggles, narration and the shaping of identities
Florence, Eric ULg

Scientific conference (2014, April 30)

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See detailMigration of contaminants through the unsaturated zone overlying the Hesbaye chalky aquifer in Belgium: a field investigation
Brouyère, Serge ULg; Dassargues, Alain ULg; Hallet, Vincent

in Journal of Contaminant Hydrology (2004), 72(1-4), 135-164

This paper presents the results of a detailed field investigation that was performed for studying groundwater recharge processes and solute downward migration mechanisms prevailing in the unsaturated zone ... [more ▼]

This paper presents the results of a detailed field investigation that was performed for studying groundwater recharge processes and solute downward migration mechanisms prevailing in the unsaturated zone overlying a chalk aquifer in Belgium. Various laboratory measurements were performed on core samples collected during the drilling of boreholes in the experimental site. In the field, experiments consisted of well logging, infiltration tests in the unsaturated zone, pumping tests in the saturated zone and tracer tests in both the saturated and unsaturated zones. Results show that gravitational flows govern groundwater recharge and solute migration mechanisms in the unsaturated zone. In the variably saturated chalk, the migration and retardation of solutes is strongly influenced by recharge conditions. Under intense injection conditions, solutes migrate at high speed along the partially saturated fissures, downward to the saturated zone. At the same time, they are temporarily retarded in the almost immobile water located in the chalk matrix. Under normal recharge conditions, fissures are inactive and solutes migrate slowly through the chalk matrix. Results also show that concentration dynamics in the saturated zone are related to fluctuations of groundwater levels in the aquifer. A conceptual model is proposed to explain the hydrodispersive behaviour of the variably saturated chalk. Finally, the vulnerability of the chalk to contamination issues occurring at the land surface is discussed. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailThe Migration of the Flightless Bird: Janet Frame's Towards Another Summer
Delrez, Marc ULg

in Journal of Post-Colonial Cultures and Societies (2010)

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See detail"Migration, Citizenship and National Identities in the European Union"
Martiniello, Marco ULg

Scientific conference (1993, July 18)

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See detailMigration, identité et histoire ancienne. Le monde romain et les (id)entités gothiques
Dignef, Anthony ULg

in Publication en ligne Université de Metz (2008)

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See detailMigration, mémoire, patrimonialisation. Étude empirique de la mémoire collective de l'exil et de l'immigration espagnols en Belgique
Molina Marmol, Maïté ULg

Doctoral thesis (2014)

Dans le prolongement de premiers travaux de recherche, la thèse de doctorat a été consacrée à l’exploration du croisement, présenté comme heuristiquement enrichissant, entre mémoire et migration, en ... [more ▼]

Dans le prolongement de premiers travaux de recherche, la thèse de doctorat a été consacrée à l’exploration du croisement, présenté comme heuristiquement enrichissant, entre mémoire et migration, en partant de l’étude empirique de la présence espagnole en Belgique. Se proposant de comparer la mémoire collective de la vague migratoire de l’exil (centré autour de l’expérience des Niños de la Guerra qui en ont composé les effectifs principaux en Belgique) et de l’immigration dite « économique » (soit d’après-guerre), la recherche s’est basée sur des terrains réalisés à Bruxelles et Liège, en tant que deux plus importants points de concentration de la population espagnole en Belgique ayant vu se sédimenter sur leur territoire les trois premières vagues migratoires. En dehors de l’évidence de logiques migratoires différentes, l’intuition d’une reconnaissance sociale inégale – au profit de l’exil –, malgré certains référents symboliques communs – dont la guerre d’Espagne –, a motivé le choix d’une approche comparative. Au niveau théorique, après avoir mêlé les apports de la sociologie de la mémoire à la perspective historienne sur ce phénomène, il s’agissait de s’émanciper du cadre des groupes politiques, se prêtant particulièrement bien à une analyse en terme de mémoire collective dans une perspective halbwachsienne et de compléter cette dernière d’une vision anthropologique davantage attentive et sensible au caractère volatile des phénomènes mémoriels et à leur imprégnation au sein de certaines pratiques quotidiennes – ce que Joël Candau a conceptualisé sous la notion de « protomémoire » . Construite autour de trois grandes parties dont l’intersection constituerait le lieu de déploiement d’une mémoire collective, la thèse envisage tour à tour la « mémoire sur les migrants » (soit le contexte des états d’origine et d’accueil et les initiatives publiques de différents ordres), « par les migrants » (à savoir les actions des associations et des entrepreneurs de mémoire) et « des migrants » (la mémoire vive). D’emblée il s’est agi d’inscrire pleinement dans l’analyse l’invention du terrain et d’une perspective théorique, la recherche se basant sur un mouvement de déconstruction/reconstruction dès la définition de ses « objets ». Par ailleurs, la réflexion méthodologique a constitué l’occasion de revenir sur les spécificités de la place et du rôle du chercheur dans la situation d’une « ethnographie indigène ». Si l’analyse a permis de conclure à l’existence d’une mémoire collective de l’exil des Niños en Belgique, elle a ouvert la question non seulement du contenu mais de l’existence, et plus particulièrement des conditions de possibilité d’une mémoire collective de l’immigration. L’analyse des discours publics, des initiatives communautaires et des entretiens individuels a conduit à poser l’hypothèse de sa localisation au croisement des mémoires militantes, ouvrières et ethniques. Le cas espagnol a bien constitué dans ce cadre un terrain d’élection, de par l’ambiguïté structurelle entre « exil politique » et « immigration économique » qui a d’emblée été posée et qui ne s’est pas avéré sans répercussions en termes mémoriels – notamment en termes d’établissement d’un « espace du dicible ». Mais si tant les dimensions ethnique et militante de l’expérience migratoire et de sa mémoire peuvent être qualifiées de « collectives », il reste que situer à leur intersection une mémoire collective de l’immigration constituerait une opération de réduction, évacuant toute une part de cette mémoire, celle la plus difficilement appréhendable, notamment portée par les femmes et se jouant dans la labilité des gestes quotidiens et des espaces de vie. [less ▲]

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See detailMigration-stimulating factor displays HEXXH-dependent catalytic activity important for promoting tumor cell migration
Houard, X.; Germain, S.; Gervais, M. et al

in International Journal of Cancer = Journal International du Cancer (2005), 116(3), 378-384

Like most extracellular matrix (ECM) components, fibronectin (Fn) is proteolyzed generating specific activities. Fibronectin proteinase (Fn-proteinase) represents such a cryptic activity located in the ... [more ▼]

Like most extracellular matrix (ECM) components, fibronectin (Fn) is proteolyzed generating specific activities. Fibronectin proteinase (Fn-proteinase) represents such a cryptic activity located in the gelatin-binding domain (GBD) of Fn and displays a zinc metalloproteinase activity. The migration-stimulating factor (MSF) is a truncated Fn isoform generated by alternative mRNA splicing and corresponds to the N-terminal part of Fn that comprises the GBD. We show that several human mammary epithelial cells express MSF and constitutively produce Fn-proteinase activity. Furthermore, recombinant M F produced by HEK-293 and MCF-7 cells possesses a constitutive Fn-proteinase activity. Mutating the putative zinc-binding motif, HEXXH, of the protein abolishes its activity thereby demonstrating its specificity. Using PCR, we showed that MSF is barely expressed in normal breast tissues, whereas its expression is significantly increased in tumors. Furthermore, an association between MSF expression and invasive capacity is observed in various breast adenocarcinoma cell lines. Indeed, when stably transfected in non-invasive MCF-7 cells, MSF promotes cell migration in a mechanism mostly dependent on its Fn-proteinase activity. In summary, our study shows that: (i) MSF displays constitutive Fn-proteinase activity; (ii) MSF expression is induced in human breast cancer; and (iff) MSF confers pro-migratory activity that depends mostly on its Fn-proteinase activity. These results suggest that MSF may be involved in tumor progression. (C) 2005 Wiley-Liss, Inc. [less ▲]

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See detailMigrations
Diepart, Jean-Christophe ULg; Pilgrim, John; Dulioust, Jérémie

in Save Cambodia's Wildlife (Ed.) Atlas of Cambodia: Maps on Socio-Economic Development and Environment (2014)

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See detailLes migrations africaines dans l'enfance, des parcours individuels entre institutions locales et institutions globales
Razy, Elodie ULg; Rodet, Marie

in Journal des Africanistes (2012), 81(2), 5-48

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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 detailMigrations congolaises (RDC) en Belgique et postcolonialismes
Demart, Sarah ULg

in La lutte contre les discriminations au regard de l’histoire et de la mémoire coloniales : état des lieux (2014, January)

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See detailMigrations congolaises (RDC) en Belgique et postcolonialismes
Demart, Sarah ULg

Conference (2012, December)

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See detailmigrations congolaises en Belgique et géographies religieuses
Demart, Sarah ULg; Melice, Anne ULg; Meiers, Bénédicte ULg

Conference (2012, April 13)

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See detailmigrations congolaises en Belgique et géographies religieuses
Demart, Sarah ULg; Melice, Anne ULg; Meiers, Bénédicte ULg

Conference (2012, February 08)

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