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See detailLa pêche traditionnelle dans les pleines inondables du fleuve Ouémé au Bénin
Laleyé, Philippe; Akélé, David; Philippart, Jean-Claude ULg

in Cahiers d'Ethologie (2005), 22(2), 25-38

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See detailLes pêcheurs migrants de Guet-Ndar (Saint-Louis du Sénégal) : analyse d’une territorialité diverse entre espaces de conflits et espaces de gestion
Seck, Aichetou ULg

Doctoral thesis (2014)

In Western Africa and more particularly in Senegal, the fishing represents an important sector. This situation involves diverse communities which, for several decades, work in the small- scale fisheries ... [more ▼]

In Western Africa and more particularly in Senegal, the fishing represents an important sector. This situation involves diverse communities which, for several decades, work in the small- scale fisheries and which print in the sea their own socio- spatial dynamics. Among these, fishermen’s community of Guet-Ndar, a district of the “langue de Barbarie” located on the big Senegalese coast constitute one of the most notable halieutic societies. Very early, this littoral population made the activity of fishing its exclusive speciality. So, those fishermen developed around the sea, under the regime of free access, quite new practices of which various forms of migration along African west coast. However, with the overexploitation of the fish stock, the Guet-Ndar migrant fishing is not without facing confrontations with autochthonous fishermen. This research aims on one hand, at understanding the evolving territoriality of the migrant fishermen of Guet-Ndar through the prism of conflicts which appear on their halieutic space, notably in Cayar and in Mauritania. On the other hand, it tries to see how these sea craftmen adapt and are collectively organizing and redefining their territories through local mobilizations and within the framework of regional policies. [less ▲]

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See detailPectin extraction from lemon by-product with acidified date juice : effect of extraction conditions on chemical composition of pectin.
Masmoudi, M.; Besbes, Souhail; Chaabouni, M. et al

in Food Science & Technology International (2010), 16(2), 105-114

The microstructure and the rheological properties of lemon-pectin mixtures were studied and compared to those of pure lemon (high methoxyl: HM) and date (low methoxyl: LM) pectins. Rheological properties ... [more ▼]

The microstructure and the rheological properties of lemon-pectin mixtures were studied and compared to those of pure lemon (high methoxyl: HM) and date (low methoxyl: LM) pectins. Rheological properties were carried out in the presence of 30%, 45% and 60% sucrose, and increasing calcium concentrations (0-0.1%). The presence of date with lemon pectin led to a gel formation at 45% sucrose and in the presence of calcium, which was not the case for lemon pectin alone under the same conditions. It is suggested that lemon and date pectins interacted, leading to gel formations at different gelling temperatures, which were strongly dependant on degree of methylation. These results were confirmed by scanning electron microscopy, which revealed inhomogeneous gels where dense aggregated network and loose, open network areas were present. Addition of calcium to pectin mixture gels led to stronger and faster gel formation. [less ▲]

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See detailPectoral sound production in Synodontis (Mochokidae): a morphological study
Fabri, Gégory; Mauguit, Quentin; Vandewalle, Pierre ULg et al

Poster (2007)

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See detailPeculiar characteristics of familial GH-secreting pituitary adenomas
Jaffrain-Réa, M. L.; Ferretti, E.; Durante, C. et al

in 5th European Congress of Endocrinology - Abstract book (2001)

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See detailA peculiar class of debris disks from Herschel/DUNES - A steep fall off in the far infrared
Ertel, S; Wolf, S; Marshall, J P et al

in Astronomy and Astrophysics (2012), 541

Aims. We present photometric data of debris disks around HIP 103389 (HD 199260), HIP 107350 (HN Peg, HD206860), and HIP 114948 (HD 219482), obtained in the context of our Herschel Open Time Key Program ... [more ▼]

Aims. We present photometric data of debris disks around HIP 103389 (HD 199260), HIP 107350 (HN Peg, HD206860), and HIP 114948 (HD 219482), obtained in the context of our Herschel Open Time Key Program DUNES (DUst around NEarby Stars). Methods. We used Herschel/PACS to detect the thermal emission of the three debris disks with a 3 sigma sensitivity of a few mJy at 100 um and 160 um. In addition, we obtained Herschel/PACS photometric data at 70 um for HIP 103389. Two different approaches are applied to reduce the Herschel data to investigate the impact of data reduction on the photometry. We fit analytical models to the available spectral energy distribution (SED) data. Results. The SEDs of the three disks potentially exhibit an unusually steep decrease at wavelengths > 70 um. We investigate the significance of the peculiar shape of these SEDs and the impact on models of the disks provided it is real. Our modeling reveals that such a steep decrease of the SEDs in the long wavelength regime is inconsistent with a power-law exponent of the grain size distribution -3.5 expected from a standard equilibrium collisional cascade. In contrast, a very distinct range of grain sizes is implied to dominate the thermal emission of such disks. However, we demonstrate that the understanding of the data of faint sources obtained with Herschel is still incomplete and that the significance of our results depends on the version of the data reduction pipeline used. Conclusions. A new mechanism to produce the dust in the presented debris disks, deviations from the conditions required for a standard equilibrium collisional cascade (grain size exponent of -3.5), and/or significantly different dust properties would be necessary to explain the potentially steep SED shape of the three debris disks presented. (abridged) [less ▲]

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See detailPeculiar hydrophobic properties of the 67-78 fragment of α-synuclein are responsible for membrane destabilization and neurotoxicity
Crowet, Jean-Marc ULg; Lins, Laurence ULg; Dupiereux-Fettweis, Ingrid ULg et al

Poster (2007, March 14)

α-synuclein is a 140 residue protein linked to Parkinson’s disease. Intraneural inclusions called Lewy bodies and Lewy neurites are mainly composed of α-synuclein aggregated in amyloid fibrils. Few years ... [more ▼]

α-synuclein is a 140 residue protein linked to Parkinson’s disease. Intraneural inclusions called Lewy bodies and Lewy neurites are mainly composed of α-synuclein aggregated in amyloid fibrils. Few years ago, tilted peptides have been detected in two other amyloidogenic proteins : the amyloid β peptide involved in Alzheimer’s disease, and the PrP protein linked to Creuztfeldt-Jakob’s disease. Tilted peptides are short protein fragments that adopt an oblique orientation when inserted into biological membranes. Tilted peptides are able to destabilize membranes. In this study, we predicted by sequence analysis and molecular modelling that the 67-78 fragment of α-synuclein is a tilted peptide. Like most of them, the α-syn 67-78 peptide is able to induce lipid mixing and leakage of unilamellar liposomes. A mutant designed by molecular modelling to decrease the destabilizing properties of the peptide was shown to be significantly less fusogenic. The neuronal toxicity was studied using human neuroblastoma cells and we demonstrated that the α-syn 67-78 peptide induces neurotoxicity. In conclusion, we have identified a tilted peptide in α-synuclein which could be involved in the toxicity induced during amyloidogenesis of α-synuclein. [less ▲]

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See detailPeculiar hydrophobic properties of the 67-78 fragment of α-synuclein are responsible for membrane destabilization and neurotoxicity
Crowet, Jean-Marc ULg; Lins, Laurence ULg; Dupiereux-Fettweis, Ingrid ULg et al

Poster (2006, December 18)

α-synuclein is a 140 residue protein linked to Parkinson’s disease. Intraneural inclusions called Lewy bodies and Lewy neurites are mainly composed of α-synuclein aggregated in amyloid fibrils. Few years ... [more ▼]

α-synuclein is a 140 residue protein linked to Parkinson’s disease. Intraneural inclusions called Lewy bodies and Lewy neurites are mainly composed of α-synuclein aggregated in amyloid fibrils. Few years ago, tilted peptides have been detected in two other amyloidogenic proteins : the amyloid β peptide involved in Alzheimer’s disease, and the PrP protein linked to Creuztfeldt-Jakob’s disease. Tilted peptides are short protein fragments that adopt an oblique orientation when inserted into biological membranes. Tilted peptides are able to destabilize membranes. In this study, we predicted by sequence analysis and molecular modelling that the 67-78 fragment of α-synuclein is a tilted peptide. Like most of them, the α-syn 67-78 peptide is able to induce lipid mixing and leakage of unilamellar liposomes. A mutant designed by molecular modelling to decrease the destabilizing properties of the peptide was shown to be significantly less fusogenic. The neuronal toxicity was studied using human neuroblastoma cells and we demonstrated that the α-syn 67-78 peptide induces neurotoxicity. In conclusion, we have identified a tilted peptide in α-synuclein which could be involved in the toxicity induced during amyloidogenesis of α-synuclein. [less ▲]

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See detailThe peculiar Of?p stars HD 108 and HD 191612
Nazé, Yaël ULg; Rauw, Grégor ULg; Walborn, N. R. et al

in Massive Stars and High-Energy Emission in OB Associations (2005, November 01)

The Of?p spectral category was introduced by Walborn in 1972 to describe peculiar stars which possess intense emission lines of C III 4647,4650,4651. Recently, two of them, HD 108 and HD 191612, were ... [more ▼]

The Of?p spectral category was introduced by Walborn in 1972 to describe peculiar stars which possess intense emission lines of C III 4647,4650,4651. Recently, two of them, HD 108 and HD 191612, were found to display spectacular line profile variations in the visible domain: these stars apparently alternate between two different spectral states (O6-O8). To discover the origin of this intriguing behaviour, a multiwavelength campaign was undertaken. In this context, the analysis of the X-ray emission is especially important since it provides crucial information for constraining the nature of these peculiar objects and testing conflicting models. We are therefore carrying out high-quality XMM-Newton observations of these stars and we present the results of the data obtained up to now. [less ▲]

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See detailThe Peculiar Of?p Stars HD 108 and HD 191612: The X-ray View
Nazé, Yaël ULg; Rauw, Grégor ULg; Walborn, N. R. et al

in The X-ray Universe 2005 (2006, January 01)

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See detailPeculiar polarization and shape properties of Barbarian asteroids: A campaign for their physical characterization
Devogele, Maxime ULg; Hanus, J.; Tanga, P. et al

Conference (2014, July)

A few years ago, asteroid polarimetry allowed to discover a class of asteroids exhibiting peculiar phase polarization curves, collectively called "Barbarians" (a dozen are known) from the prototype of ... [more ▼]

A few years ago, asteroid polarimetry allowed to discover a class of asteroids exhibiting peculiar phase polarization curves, collectively called "Barbarians" (a dozen are known) from the prototype of this class, the asteroid (234) Barbara. All such objects belong to the taxonomic classes L, Ld, and K, all related to the general S-complex. However, the "Barbarian" polarimetric properties are not found among all known L-class asteroids. Therefore, we cannot be sure that composition is the only and one responsible of the wide negative polarization branch. On the other hand, it was also suggested that a peculiar distribution of incidence/diffusion angles, resulting from the presence of large concavities on the object surface, could play a role in the polarimetric behaviour. Based on such motivations, we are running a systematic campaign for shape determination at the C2PU telescope of the Observatoire de la Côte d'Azur (Calern site) and several other sites in the world. By using photometric inversion techniques we hope to obtain indications on the presence of concavities. [less ▲]

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See detail“Peculiar Sites of Amnesia: Recovering the ‘Eclipsed Figures of the Past’ in Francis Quamina Farrier’s The Slave and the Scroll and Michael Gilkes’s Couvade.”
Bada, Valérie ULg

in Bridges Across Chasms. Towards a Transcultural Future in Caribbean Literature. Ed. Bénédicte Ledent. (2004)

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See detailPeculiar Variable in Crux
Della Valle, M.; Hutsemekers, Damien ULg; Saviane, I. et al

in International Astronomical Union Circulars [=IAUCs] (2003), 8185

IAUC 8185 available at Central Bureau for Astronomical Telegrams.

Detailed reference viewed: 4 (1 ULg)
See detailThe Pedagogical and Political Roots of Belgian Design
Prina, Daniela ULg

in Simon Thomas, Mienke; Huygens, Frank (Eds.) Design Derby: Netherlands-Belgium (1815-2015), exh.cat. (2015)

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See detailPedagogical supervision and initial teachers’ education- an international research project
Albuquerque, Alberto; Pinheiro, Claudia; Aranha, Agata et al

Poster (2010, October)

Detailed reference viewed: 33 (4 ULg)
See detailPédagogie de l'écriture : un plan de travail pour apprendre à écrire les textes utilitaires
Dumortier, Jean-Louis ULg

in Revue de la Direction Générale de l’Organisation des Etudes (1987)

Detailed reference viewed: 24 (0 ULg)
See detailPédagogie de la lecture : comment aider à lire un roman complet ?
Dumortier, Jean-Louis ULg

in Revue de la Direction Générale de l’Organisation des Etudes (1979)

Detailed reference viewed: 12 (0 ULg)