Publications ORBi OA
Bookmark and Share    
Full Text
See detailImproved one-dimensional numerical simulation of transient mixed flow in water pipes network
Kerger, François ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 2nd ENVITAM PhD Day (2008, January 29)

Detailed reference viewed: 57 (15 ULg)
Full Text
See detailStyle beyond Borders: Language in Recent Nigerian Fiction
Tunca, Daria ULg

Doctoral thesis (2008)

Detailed reference viewed: 155 (24 ULg)
Full Text
See detailOsteogenesis imperfecta
Kaux, Jean-François ULg

Conference (2008, January 25)

Detailed reference viewed: 64 (28 ULg)
Full Text
See detailThe Belgian Competition Council bans a price-coordination mechanism in the retail bakery markets (VEBIC)
Petit, Nicolas ULg; Verbeke, Robbe

in e-Competitions (2008), (21559),

Detailed reference viewed: 31 (3 ULg)
Full Text
See detailLa membrane du globule gras du lait (MFGM) : une composition et une structure originale.
Bodson, Pascal; Vanderghem, Caroline ULg; Danthine, Sabine ULg et al

Poster (2008, January 23)

Detailed reference viewed: 38 (7 ULg)
Full Text
See detailOptiVal: Vers de nouveaux outils de gestion pour les éleveurs laitiers wallons, Prédire la réussite à l’insémination
Laloux, Laurent; Bastin, Catherine ULg; Glorieux, Géry et al

Poster (2008, January 23)

Detailed reference viewed: 7 (3 ULg)
Full Text
See detailAnalyse des lipides polaires de la MFGM par SPE et HPLC-ELSD
Bodson, Pascal ULg; Danthine, Sabine ULg; Blecker, Christophe ULg et al

in CRAW Gembloux (Ed.) Treizième Carrefour des Productions Animales : Vérités et Contre-Vérités (2008, January 23)

Detailed reference viewed: 53 (11 ULg)
Full Text
See detailProduire des graines de lin riches en oméga-3 est possible en Belgique
Bodson, Bernard ULg; Parmentier, Renaud; Vancutsem, Françoise ULg et al

in Treizième carrefour des productions animales: L'élevage des ruminants en question: vérités et contre-vérités (2008, January 23)

Detailed reference viewed: 27 (2 ULg)
Full Text
See detailDosage des sels minéraux du lait par la spectrométrie du moyen-infrarouge. Outil pratique à destination des chercheurs, éleveurs et industriels laitiers
Soyeurt, Hélène ULg; Bruwier, Damien; Dardenne, Pierre et al

in 13ième Carrefour des Productions animales: L'élevage des ruminants en question: vérités et contre-vérités (2008, January 23)

Detailed reference viewed: 370 (6 ULg)
Full Text
Peer Reviewed
See detailAbsence of Gnrh1 and Kiss1 Activation in Alpha-Fetoprotein Knockout Mice: Prenatal Estrogens Defeminize the Potential to Show Preovulatory Lh Surges
Gonzalez-Martinez, David ULg; De Mees, C.; Douhard, Quentin ULg et al

in Endocrinology (2008), 149(5), 2333-2340

Sex differences in gonadal function are driven by either cyclic (females) or tonic (males) hypothalamic GnRH1 release and subsequently gonadotrophin (LH and FSH) secretion from the pituitary. This sex ... [more ▼]

Sex differences in gonadal function are driven by either cyclic (females) or tonic (males) hypothalamic GnRH1 release and subsequently gonadotrophin (LH and FSH) secretion from the pituitary. This sex difference seems to depend on the perinatal actions of gonadal hormones on the hypothalamus. We used alpha-fetoprotein knock-out mice (Afp(-/-)) to study the mechanisms by which estrogens affect the sexual differentiation of the GnRH1 system. Afp(-/-) mice lack the protective actions of AFP against estrogens circulating during embryonic development, leading to infertility probably due to a hypothalamic dysfunction. Therefore, we first determined whether Afp(-/-) females are capable of showing a steroid-induced preovulatory LH surge by means of FOS/GnRH1 immunohistochemistry and radioimmunoassay of plasma LH levels. Since the KISS1/GPR54 system is a key upstream regulator of the GnRH1 system as well as being sexually dimorphic, we also analyzed whether Kisspeptin-10 neurons were activated in Afp(-/-) mice following treatment with estradiol and progesterone. We found that the GnRH1 and Kisspeptin-10 neuronal systems are defeminized in Afp(-/-) females since they did neither show steroid-induced LH surges nor significant FOS/GnRH1 double-labeling. Furthermore, Kisspeptin-10 immunoreactivity and neural activation, measured by the number of double-labeled FOS/Kisspeptin-10 cells, were lower in Afp(-/-) females suggesting a down-regulation of GnRH1 function. Thus the sex difference in the ability to show preovulatory LH surges depends on the prenatal actions of estrogens in the male hypothalamus and is thus lost in Afp(-/-) females since they lack AFP to protect them against the defeminizing effects of estrogens during prenatal development. [less ▲]

Detailed reference viewed: 38 (1 ULg)
Full Text
See detailSolar concentrator
Habraken, Serge ULg; Ruelle, Vincent; Collette, Jean-Paul ULg

Patent (2008)

Space solar concentrator with deployable reflectors

Detailed reference viewed: 57 (10 ULg)
Full Text
Peer Reviewed
See detailVariational Bayesian inversion of the equivalent current dipole model in EEG/MEG
Kiebel, S. J.; Daunizeau, J.; Phillips, Christophe ULg et al

in Neuroimage (2008), 39(2), 728-741

In magneto- and electroencephalography (M/EEG), spatial modelling of sensor data is necessary to make inferences about underlying brain activity. Most source reconstruction techniques belong to one of two ... [more ▼]

In magneto- and electroencephalography (M/EEG), spatial modelling of sensor data is necessary to make inferences about underlying brain activity. Most source reconstruction techniques belong to one of two approaches: point source models, which explain the data with a small number of equivalent current dipoles and distributed source or imaging models, which use thousands of dipoles. Much methodological research has been devoted to developing sophisticated Bayesian source imaging inversion schemes, while dipoles have received less such attention. Dipole models have their advantages; they are often appropriate summaries of evoked responses or helpful first approximations. Here, we propose a variational Bayesian algorithm that enables the fast Bayesian inversion of dipole models. The approach allows for specification of priors on all the model parameters. The posterior distributions can be used to form Bayesian confidence intervals for interesting parameters, like dipole locations. Furthermore, competing models (e.g., models with different numbers of dipoles) can be compared using their evidence or marginal likelihood. Using synthetic data, we found the scheme provides accurate dipole localizations. We illustrate the advantage of our Bayesian scheme, using a multi-subject EEG auditory study, where we compare competing models for the generation of the N100 component. (C) 2007 Elsevier Inc. All rights reserved. [less ▲]

Detailed reference viewed: 26 (2 ULg)
Full Text
Peer Reviewed
See detailEnjeux cognitifs de l’esquisse dans la littérature européenne du XIXe siècle
Stienon, Valérie ULg

in @nalyses : Revue de Critique et de Théorie Littéraire (2008)

Detailed reference viewed: 38 (7 ULg)
Full Text
See detailSolar Concentrator
Habraken, Serge ULg; Defise, Jean-Marc ULg; Collette, Jean-Paul ULg

Patent (2008)

A combination of lens and mirror for solar concentration is presented.Collection efficiency, uniformity and compactness are the main goals

Detailed reference viewed: 64 (5 ULg)
Full Text
Peer Reviewed
See detailStochastic excitation of non-radial modes. I. High-angular-degree p modes
Belkacem, Kevin ULg; Samadi, R.; Goupil, Marie-José et al

in Astronomy and Astrophysics (2008), 478

Context: Turbulent motions in stellar convection zones generate acoustic energy, part of which is then supplied to normal modes of the star. Their amplitudes result from a balance between the efficiencies ... [more ▼]

Context: Turbulent motions in stellar convection zones generate acoustic energy, part of which is then supplied to normal modes of the star. Their amplitudes result from a balance between the efficiencies of excitation and damping processes in the convection zones. Aims: We develop a formalism that provides the excitation rates of non-radial global modes excited by turbulent convection. As a first application, we estimated the impact of non-radial effects on excitation rates and amplitudes of the high-angular-degree modes that are observed on the Sun. Methods: A model of stochastic excitation by turbulent convection was developed to compute the excitation rates and then successfully applied to solar radial modes. We generalise this approach to the case of non-radial global modes. This enables us to estimate the energy supplied to high-(l) acoustic modes. Qualitative arguments, as well as numerical calculations, are used to illustrate the results. Results: We find that non-radial effects for p modes are non-negligible: - For high-n modes (i.e. typically n > 3) and for high values of l, the power supplied to the oscillations depends on the mode inertia. - For low-n modes, independent of the value of l, the excitation is dominated by the non-radial components of the Reynolds stress term. Conclusions: Our numerical investigation of high-l p modes shows that the validity of the present formalism is limited to l < 500 due to the spatial separation of scale assumption. Thus, a model for very high-l p-mode excitation rates calls for further theoretical developments; however, the formalism is valid for solar g modes, which will be investigated in a paper in preparation. [less ▲]

Detailed reference viewed: 16 (1 ULg)