Last 7 days
Bookmark and Share    
See detailLes premières forêts communautaires du Gabon - Bonus 1
Meunier, Quentin; Boldrini, Sylvie; Federspiel, Michèle et al

Diverse speeche and writing (2014)

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailDietary early-life exposure to contaminated eels does not impair spatial cognitive performances in adult offspring mice as assessed in the Y-maze and the Morris water maze
Dridi, Imen; Leroy, Delphine; Guignard, Cedric et al

in Nutrition Research (2014), 34(12), 1075-1084

Many environmental contaminants are introduced via the diet and may act as neurotoxins and endocrine disrupters, especially influencing growing organisms in early life. The purpose of this study was to ... [more ▼]

Many environmental contaminants are introduced via the diet and may act as neurotoxins and endocrine disrupters, especially influencing growing organisms in early life. The purpose of this study was to examine whether dietary exposure of dams to fish naturally contaminated with xenobiotics, especially with polychlorinated biphenyls (PCBs) and heavy metals (e.g. mercury and lead), resulted in cognitive function deficits in adult offspring mice. Daily, four groups of dams (n = 10/group) ingested standard diet plus paste with/without eels, during gestation and lactation, from gestational day (GD) six until post natal day (PND) 21 (weaning). Dams orally ingested a standardized amount of eel (0.8 mgkg-1 d-1) containing the six non-dioxin-like (NDL) PCBs (σ6 NDL-PCBs: 28, 52, 101, 138, 153, and 180) at 0, 85, 216, and 400 ngkg-1 d-1. Results showed that early-life exposure to contaminated eels did not (compared to non-exposed controls) impair immediate working memory in the Y-maze in the offspring assessed at PND 38. Furthermore, it did not significantly impact spatial learning and retention memory as measured in the Morris water maze in adult offspring mice (PND 120-123). Our results suggest that perinatal exposure to contaminated eels does not affect spatial cognitive performances, as assessed by the Y-maze and Morris water maze at adult age. Adverse effects of xenobiotics reported earlier might be camouflaged by beneficial eel constituents, such as n-3 fatty acids. However, additional studies are needed to differentiate between potential positive and negative effects following consumption of food items both rich in nutrients and contaminants. © 2014 Elsevier Inc. [less ▲]

Detailed reference viewed: 19 (6 ULg)
Full Text
Peer Reviewed
See detailTheoretical power spectra of mixed modes in low-mass red giant stars
Grosjean, Mathieu ULg; Dupret, Marc-Antoine ULg; Belkacem, Kevin et al

in Astronomy and Astrophysics (2014), 572

CoRoT and Kepler observations of red giant stars revealed very rich spectra of non-radial solar-like oscillations. Of particular interest was the detection of mixed modes that exhibit significant ... [more ▼]

CoRoT and Kepler observations of red giant stars revealed very rich spectra of non-radial solar-like oscillations. Of particular interest was the detection of mixed modes that exhibit significant amplitude, both in the core and at the surface of the stars. It opens the possibility of probing the internal structure from their innermost layers up to their surface throughout their evolution on the red giant branch, as well as on the red clump. Our objective is primarily to provide physical insight into the mechanism responsible for mixed-mode amplitudes and lifetimes. Subsequently, we aim at understanding the evolution and structure of red-giant spectra along with their evolution. The study of energetic aspects of these oscillations is also important for predicting the mode parameters in the power spectrum. Non-adiabatic computations, including a time-dependent treatment of convection, are performed and provide the lifetimes of radial and non-radial mixed modes. We then combine these mode lifetimes and inertias with a stochastic excitation model that gives us their heights in the power spectra. For stars representative of CoRoT and Kepler observations, we show under which circumstances mixed modes have heights comparable to radial ones. We stress the importance of the radiative damping in determining the height of mixed modes. Finally, we derive an estimate for the height ratio between a g-type and a p-type mode. This can thus be used as a first estimate of the detectability of mixed modes. [less ▲]

Detailed reference viewed: 16 (5 ULg)
Peer Reviewed
See detailWood digestion in lower termites: multidisciplinary approaches based on differential feeding
Bauwens, Julien ULg; Brasseur, Catherine ULg; Tarayre, Cédric ULg et al

Poster (2014, December)

Termites digestive tract and hindgut especially still holds many secrets despites hundreds of years of research. The complexity of the symbiotic microbial community and the contrast of physio-chemical ... [more ▼]

Termites digestive tract and hindgut especially still holds many secrets despites hundreds of years of research. The complexity of the symbiotic microbial community and the contrast of physio-chemical environments found in lower termites paunch are potentially the key point to explain the efficiency of ligno-cellulose digestion. Contribution of advancing technologies accelerates the progress of our knowledge in this field. Here, we present multiple approaches combining old and recent techniques used to highlight the effect of ligno-cellulosic compounds on termite gut and the role of populations from the symbiotic microbial community. Termites Reticulitermes flavipes (Kollar) submitted to various artificial diets showed variations in flagellates populations profile and enzymatic activities. Differential protein expression was investigated using 2D-DIGE MALDI-TOF-TOF and 2D-LC-MS/MS using high resolution orbitrap analyzer. Results from both proteomic experiments tend to support each-other and bring complementary points of view. The gel-free analysis resulted in highly contrasted identification of enzymes involved in ligno-cellulose digestion and metabolism. Finally, differential feeding experiments leaded to in vivo selection of different symbiotic communities. These communities were characterized following some metabolism assays and allowed the cultivation of diverse microbial consortia using media closely related to the respective artificial diets. This work provides relevant data on termite and associated microbial community response to alimentary diets. [less ▲]

Detailed reference viewed: 49 (9 ULg)
Full Text
See detailMulti-Domain Approaches for the Solution of High-Frequency Time-Harmonic Propagation Problems
Vion, Alexandre ULg

Doctoral thesis (2014)

The numerical solution of high-frequency time-harmonic propagation problems by volumic discretization methods is a challenging task, most notably because of the very large size of the resulting linear ... [more ▼]

The numerical solution of high-frequency time-harmonic propagation problems by volumic discretization methods is a challenging task, most notably because of the very large size of the resulting linear systems. We present a framework for a class of iterative methods that distribute the work between several CPUs and exchange information between physical or artificial interfaces. The goal is to define subproblems of manageable sizes, and to exploit the power of parallel supercomputers. [less ▲]

Detailed reference viewed: 39 (15 ULg)
See detail“Negotiating the law: judges, families and court hearings in inheritance cases in Cotonou”
Andreetta, Sophie ULg

Conference (2014, December)

On 14 June 2004, Benin ratified a new Code on Persons and Family – regulating, amongst other things, inheritance matters. Over the last couple of years, the number of inheritance cases handled by state ... [more ▼]

On 14 June 2004, Benin ratified a new Code on Persons and Family – regulating, amongst other things, inheritance matters. Over the last couple of years, the number of inheritance cases handled by state courts has drastically increased in the capital city. How do people understand and use the law? While modern courts, like other public services, have been analyzed as part of everyday governance and the local state in West Africa, I on the other hand will focus on the ways in which the judiciary interprets and implements law. Within that context, hearings are a key moment of legal proceedings. How do litigants argue their cases? How do judges manage to settle inheritance quarrels? Using case studies of inheritance disputes and their litigation under the 2004 ‘Code on Persons and Family’, I try to understand how state laws are understood, utilized, and/or questioned in Cotonou. [less ▲]

Detailed reference viewed: 23 (0 ULg)
Full Text
Peer Reviewed
See detailNatural killer and dendritic cells collaborate in the immune response induced by the vaccine against uterine cervical cancer.
Langers, Inge ULg; Renoux, Virginie; Reschner, Anca et al

in European journal of immunology (2014), 44

Virus-like particles (VLPs) of human papillomavirus (HPV) are used as a vaccine against HPV-induced cancer, and recently we have shown that these VLPs are able to activate natural killer (NK) cells. Since ... [more ▼]

Virus-like particles (VLPs) of human papillomavirus (HPV) are used as a vaccine against HPV-induced cancer, and recently we have shown that these VLPs are able to activate natural killer (NK) cells. Since NK cells collaborate with dendritic cells (DCs) to induce an immune response against viral infections and tumors, we studied the impact of this crosstalk in the context of HPV vaccination. NK cells in the presence of HPV-VLPs enhanced DC maturation as shown by an upregulation of CD86 and HLA-DR and an increased production of IL-12p70, but not of the immunosuppressive cytokine IL-10. This activation was bi-directional. Indeed, in the presence of HPV-VLPs, DCs further activated NK cells by inducing the upregulation of cell surface activation markers (CD69 and HLA-DR). The function of NK cells was also improved as shown by an increase in IFN-gamma secretion and cytotoxic activity against an HPV+ cell line. This crosstalk between NK cells and DCs needed CD40 interaction and IL-12p70 secretion, whereas NKG2D was not implicated. Our results provide insight into how VLPs interact with innate immune cells and how NK cells and DCs play a role in the immune response induced by this vaccine agent. This article is protected by copyright. All rights reserved. [less ▲]

Detailed reference viewed: 62 (6 ULg)
Full Text
Peer Reviewed
See detailA finite-element reciprocity solution for EEG forward modeling with realistic individual head models
Ziegler, Erik ULg; Chellappa, Sarah Laxhmi ULg; Gaggioni, Giulia ULg et al

in NeuroImage (2014), 103

Highlights • Creates EEG forward models suitable for high-resolution source localization. • Automatic T1-based whole-head finite element meshing and leadfield computation. • Pipelines can incorporate ... [more ▼]

Highlights • Creates EEG forward models suitable for high-resolution source localization. • Automatic T1-based whole-head finite element meshing and leadfield computation. • Pipelines can incorporate conductivity tensors from diffusion-weighted images. • Open-source toolbox shared under a permissive software license. • Accuracy comparable to SimBio FEM and superior to OpenMEEG BEM solutions. [less ▲]

Detailed reference viewed: 71 (21 ULg)
Full Text
Peer Reviewed
See detailConverging to and escaping from the global equilibrium: Isostables and optimal control
Mauroy, Alexandre ULg

in Proceedings of the 53rd IEEE Conference on Decision and Control (2014, December)

This paper studies the optimal control of trajectories converging to or escaping from a stable equilibrium. The control duration is assumed to be short. When the control is turned off, the trajectories ... [more ▼]

This paper studies the optimal control of trajectories converging to or escaping from a stable equilibrium. The control duration is assumed to be short. When the control is turned off, the trajectories have not reached the target and they subsequently evolve according to the free motion dynamics. In this context, we show that the problem can be formulated as a finite-horizon optimal control problem which relies on the notion of isostables. For linear and nonlinear systems, we solve this problem using Pontryagin’s maximum principle and we study the relationship between the optimal solutions and the geometry of the isostables. Finally, optimal strategies for choosing the magnitude and duration of the control are considered. [less ▲]

Detailed reference viewed: 6 (0 ULg)
Peer Reviewed
See detailIgE antibodies and FceRI are critical components of protective type 2 immunity against honeybee and russell's viper venom in mice
Starkl, Philipp; Marichal, Thomas ULg; Reber, Laurent L. et al

in Proceedings of the Type 2 Cell Symposium - Brugge (2014, December)

Detailed reference viewed: 9 (0 ULg)
See detailL'étoile de Noël
Nazé, Yaël ULg

Article for general public (2014)

Detailed reference viewed: 22 (6 ULg)
Full Text
Peer Reviewed
See detailGouvernementalité, subjectivité et vérité
Thirion, Nicolas ULg

in Acta Fabula : Revue des Parutions en Théorie Littéraire (2014), 15(10),

Detailed reference viewed: 21 (5 ULg)
Full Text
Peer Reviewed
See detailLa vernacularización de la conservación en los territorios indígenas amazónicos. Un análisis de la revalorización ancestral indígena en dos proyectos de ecoturismo comunitario en áreas protegidas
Marquez Guerra, José Francisco ULg

in Boletín de Antropología Universidad de Antioquia (2014), 29(48), 92-118

Bolivia adopted the international regime for the conservation of biodiversity in the 90s, while cultural diversity was implementing policies for the indigenous peoples of the lowlands. This two-way ... [more ▼]

Bolivia adopted the international regime for the conservation of biodiversity in the 90s, while cultural diversity was implementing policies for the indigenous peoples of the lowlands. This two-way process was crystallized in a new form of state intervention in the Amazon Region through the implementation of Protected Areas on previously inhabited territories. Based on protection criteria of "nature" and revitalization of the ancient cultures, management areas support sustainable economic development initiative for the locals. From two experiences of indigenous community tourism projects in protected areas, we use the concept of vernacularization of norms to understand how, through these dispositive of generating local income with "low environmental impact", the principles of conservation and sustainable development try to be translated into life forms of three Amazonian people, the Quechua-Tacana Uchupiamonas San Jose, Tsimane 'and Mosetene Pilon Lajas. [less ▲]

Detailed reference viewed: 18 (7 ULg)
Full Text
Peer Reviewed
See detailCompensation transfrontalière des pertes : l’arrêt Nordea Bank marque-t-il un revirement de jurisprudence ?
Richelle, Isabelle ULg

in Marcus, Cédric; van Grieken, Marie-Cécile (Eds.) LIBER AMICORUM MAURICE ELOY (2014)

Les diverses contributions réunies dans ce Liber amicorum donneront au lecteur un éclairage vif sur les grandes questions qui mobilisent au jour le jour les professionnels de la fiscalité et du droit ... [more ▼]

Les diverses contributions réunies dans ce Liber amicorum donneront au lecteur un éclairage vif sur les grandes questions qui mobilisent au jour le jour les professionnels de la fiscalité et du droit économique. Sont notamment étudiées des problématiques relevant de l’impôt sur les revenus, de la TVA, des droits d’enregistrement et de succession, des droits de douanes et accises, de la fiscalité régionale et locale, de la fiscalité internationale et de la comptabilité mais aussi de la fraude fiscale, de la procédure fiscale, de la planification fiscale à l’intérieur et à l’extérieur de nos frontières ou encore du droit de la concurrence ainsi que des problématiques qui recouvrent plusieurs de ces disciplines. [less ▲]

Detailed reference viewed: 29 (10 ULg)
Peer Reviewed
See detailPoster session 5: Friday 5 December 2014, 14:00-18:00Location: Poster area.
Henri, C.; DULGHERU, Raluca Elena ULg; Magne, J. et al

Poster (2014, December)

Detailed reference viewed: 17 (7 ULg)
Peer Reviewed
See detailClub 35 Poster session 2: Thursday 4 December 2014, 08:30-18:00Location: Poster area.
Voilliot, D.; Magne, Jm; DULGHERU, Raluca Elena ULg et al

Poster (2014, December)

Detailed reference viewed: 10 (1 ULg)
See detailPrendre la mesure de l'Univers
Nazé, Yaël ULg

Article for general public (2014)

Detailed reference viewed: 13 (0 ULg)
Peer Reviewed
See detailOral Abstract session: Stress echo in clinical practice: Friday 5 December 2014, 08:30-10:00Location: Agora.
Magne, J.; Donal, E.; Dulgheru, R. et al

Conference (2014, December)

Detailed reference viewed: 14 (1 ULg)