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Peer Reviewed
See detailMaternal transfer of trace metals to offspring in grey seals
Habran, Sarah ULg; Pomeroy, Paddy; Debier, Cathy et al

Conference (2010, May 25)

Marine mammals may display high heavy metal levels in their tissues, which raises the question of the importance of toxic metal transfer from mother to offspring. Some lactating female phocids fast during ... [more ▼]

Marine mammals may display high heavy metal levels in their tissues, which raises the question of the importance of toxic metal transfer from mother to offspring. Some lactating female phocids fast during the suckling period. This fasting period involves not only an important mobilization of energy reserves, but also mobilization of potentially associated contaminants. We studied maternal transfer of trace metals to offspring in the grey seal (Halichoerus grypus). Trace metal concentrations were measured in whole blood, milk and hair of mother-pup pairs in early and late lactation. Metal levels in blood decreased according to the following pattern: Fe > Zn > Se > Cu > Hg > Pb > Cr > V in mothers and pups. Cd and Ni were not detected and V, Cr and Pb levels were very low in maternal and pup blood. However, Ni and Pb levels were detected in the milk showing a transmammary transfer of these metals. Hg levels in blood and milk were higher than levels of previous metals and levels varied significantly throughout lactation. The increasing maternal levels over lactation were likely due to the remobilization of energy reserves during fasting and milk production in mothers causing a Hg release in blood. All metals were detected in hair and lanugo according to the following pattern: Fe > Zn > Hg > Cu > Se > Ni > V > Pb > Cd > Cr in mothers and Zn > Fe > Hg > Se > Cu > Pb > Ni > V > Cr > Cd in pups. Pb levels were relatively high in comparison with other phocid species. Only Hg showed a significant relationship between hair/lanugo and blood levels. This study highlights (i) a transplacental and transmammary transfer of metals in grey seals, and shows that (ii) physiological processes such as lactation and/or fasting can modify trace metal levels in the blood of mothers and pups. [less ▲]

Detailed reference viewed: 57 (10 ULg)
Peer Reviewed
See detailMaternal transfer of trace metals to offspring in northern elephant seals
Habran, Sarah ULg; Debier, Cathy; Crocker, Daniel et al

Poster (2008, October 30)

Detailed reference viewed: 40 (13 ULg)
See detailMaternal transisition of dietary omega-3 fatty acids: effects on zootechnical performance and health status of the broiler progeny
Koppenol, A.; Franssens, L.; Everaert, Nadia ULg et al

in Proceedings of the 17th European Society of Veterinary and Comparative Nutrition Congress (2013)

Detailed reference viewed: 12 (0 ULg)
See detailMaternal transition of prenatal undernutrition in the laying hen
Willems, Els; Wang, Yufeng; Koppenol, Astrid et al

Poster (2013)

Peer Reviewed
See detailMaternal vascular lesions in pre-eclampsia and intrauterine growth retardation: light microscopy and immunofluorescence.
Hustin, J.; Foidart, Jean-Michel ULg; Lambotte, R.

in Placenta (1983), 4

Placental bed biopsies were performed during caesarean section in a series of 137 patients. Analysis of the morphological findings confirms that vascular physiological changes were reduced in pre ... [more ▼]

Placental bed biopsies were performed during caesarean section in a series of 137 patients. Analysis of the morphological findings confirms that vascular physiological changes were reduced in pre-eclampsia and in normotensive intrauterine growth retardation. In pre-eclampsia, acute atherosis in the decidual segments of uteroplacental arteries was a prominent feature. Intimal thickenings of the myometrial segments of the uteromaternal arteries were also noted. Normotensive intrauterine growth retardation cases were characterized by intimal thickenings of the myometrial segments of the uteroplacental arteries. Immunofluorescent investigations have demonstrated that the deep vascular stenoses were not associated with immunoglobulin deposition while in distal arterial segments displaying acute atherosis a positive immunofluorescence for IgG and fibrin and, more irregularly, for C'3 and IgM could be noted. These findings lead us to suggest that an immunological mechanism may be involved in the pathogenesis of acute atherosis. [less ▲]

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Peer Reviewed
See detailLa maternité des déesses grecques et les déesses-mères : entre mythe, rite et fantasme
Pirenne-Delforge, Vinciane ULg

in Clio : Histoire, Femmes et Sociétés (2005), 21

The first part shows how, in the Hesiodic Theogony, the word « mother » is applied to goddesses who construct a specific attachment to their children, above and beyond the genealogical link. The second ... [more ▼]

The first part shows how, in the Hesiodic Theogony, the word « mother » is applied to goddesses who construct a specific attachment to their children, above and beyond the genealogical link. The second part considers why at Elis, Athena was called « mother », comparing this situation with Athens. A brief conclusion comes back to the historiographical illusion of a generic « Mothergoddess » in the Greek world. [less ▲]

Detailed reference viewed: 81 (1 ULg)
See detailMaternité et divinité en Grèce antique : l’exemple de Déméter
Pirenne-Delforge, Vinciane ULg

in Dermenjian, G.; Guilhaumou, J.; Lapied, M. (Eds.) La puissance maternelle en Méditerranée. Mythes et représentations (2008)

Detailed reference viewed: 76 (3 ULg)
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See detailMath et Manips à l'école primaire. Favoriser l'apprentissage des grandeurs par des manipulations
Guissard, Marie-France; Henry, Valérie ULg

in Losanges (2011), 15

Detailed reference viewed: 34 (5 ULg)
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See detailMathémagie 2
Rigo, Michel ULg

Speech (2012)

Nous présentons ici des tours de magie ne nécessitant aucune habileté particulière de la part de l'apprenti magicien : des tours de cartes, des tours de divination etc. Contrairement au magicien qui ne ... [more ▼]

Nous présentons ici des tours de magie ne nécessitant aucune habileté particulière de la part de l'apprenti magicien : des tours de cartes, des tours de divination etc. Contrairement au magicien qui ne dévoile jamais ses secrets, ici, nous expliquons que ces tours reposent sur diverses propriétés et constructions mathématiques (décomposition d'une permutation en produit de cycle, suites linéaires récurrentes, ...). Il y en aura donc pour tous les goûts... et tous les niveaux. Dans la mesure du possible, nous présenterons de "nouveaux" tours qui n'auraient pas déjà été dévoilés dans un exposé précédent. [less ▲]

Detailed reference viewed: 106 (10 ULg)
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See detailMathémagie et au-delà
Rigo, Michel ULg

Learning material (2010)

Nous présentons ici 5 tours de magie ne nécessitant aucune habileté particulière de la part de l'apprenti magicien : des tours de cartes, des tours de divination et le célèbre tour du ``barman aveugle ... [more ▼]

Nous présentons ici 5 tours de magie ne nécessitant aucune habileté particulière de la part de l'apprenti magicien : des tours de cartes, des tours de divination et le célèbre tour du ``barman aveugle avec des gants de boxe''. Contrairement au magicien qui ne dévoile jamais ses secrets, ici, nous expliquons que ces tours reposent sur diverses propriétés et constructions mathématiques. Ces dernières débouchent sur de véritables questions de recherche actuelle en théorie des graphes ou en combinatoire des mots et même sur de possibles applications en robotique et automatisation ! Il y en aura donc pour tous les goûts... et tous les niveaux (suivant l'auditoire, l'exposé sera adapté au niveau des élèves de la 4ième à la 6ième secondaire, voire même aux étudiants universitaires). Ce texte présente donc un matériel qui dépassera souvent (et de loin) le ``spectacle''. [less ▲]

Detailed reference viewed: 228 (21 ULg)
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See detailMathémagie III
Rigo, Michel ULg

Speech (2013)

Cet exposé est dans la continuité de mes précédentes prestations comme apprenti-magicien. Il s'adresse au plus grand nombre et ne nécessite pas de prérequis particulier. Je réaliserai 6 ou 7 tours de ... [more ▼]

Cet exposé est dans la continuité de mes précédentes prestations comme apprenti-magicien. Il s'adresse au plus grand nombre et ne nécessite pas de prérequis particulier. Je réaliserai 6 ou 7 tours de "mathémagie" (tours de cartes, divination, mentalisme,...). Pour chaque tour, le scénario sera identique : réalisation du tour, explication, mise en évidence des structures et résultats mathématiques sous-jacents et enfin, illustration de ces concepts mathématiques mis en oeuvre dans d'autres contextes (informatique, théorie de l'information, ...) [less ▲]

Detailed reference viewed: 101 (9 ULg)
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See detailMathematical and numerical geohydrodynamic models
Beckers, Jean-Marie ULg

in Nihoul, Jacques; Chen, Chen-Tung Arthur (Eds.) Encyclopedia of life support systems (EOLSS) (2008)

Detailed reference viewed: 33 (3 ULg)
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Peer Reviewed
See detailA mathematical comment on the formulae for the aggregation index and the shape index.
Bogaert, Jan ULg; Myneni, R B; Knyazikhin, Y

in Landscape Ecology (2002), 17(1), 87-90

Detailed reference viewed: 8 (0 ULg)
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Peer Reviewed
See detailMathematical description of heat and mass transfer during deep-bed drying: effect of product shrinkage on bed porosity
Bennamoun, Lyes ULg; belhamri, Azeddine

in Applied Thermal Engineering (2008), 18(17-18), 2236-2244

Detailed reference viewed: 17 (3 ULg)
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Peer Reviewed
See detailMathematical formulation and exact solution for landing location problem in tropical forest selective logging, a case study in Southeast Cameroon
Philippart, Julien ULg; Minghe, Sun; Doucet, Jean-Louis ULg et al

in Journal of Forest Economics (2012), 18

In Central Africa, creating forest roads and skid trails is one of the most costly and environmentally damaging operations for the forest's ecosystem. An optimized road network is essential for reducing ... [more ▼]

In Central Africa, creating forest roads and skid trails is one of the most costly and environmentally damaging operations for the forest's ecosystem. An optimized road network is essential for reducing construction costs and improving the sustainable management of timber resources. The location of landings is vital in the development of a future forest road network. In this study, a binary integer programming model similar to the uncapacitated facility location problem is formulated to optimize the locations of the landings. The model is applied to selective logging in Central Africa and tested on an annual logging zone in Southeast Cameroon. The results are compared to that of manual road planning, the currently used method. [less ▲]

Detailed reference viewed: 50 (26 ULg)
Peer Reviewed
See detailMathematical formulations of shallow water models with porosity for urban flood modeling
Bruwier, Martin ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in ICHE 2014 : 11th International Conference on Hydroscience & Engineering (2014)

Detailed reference viewed: 27 (6 ULg)
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Peer Reviewed
See detailMathematical Level-Set Modelling of Cell Growth on 3D Surfaces
Guyot, Yann ULg; Papatoniou, Ioannis; Chai, Yoke Chin et al

Poster (2012, September)

Detailed reference viewed: 22 (8 ULg)