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See detailOn the feeding ecology of the pied kingfisher, Ceryle rudis at Lake Nokoué, Benin. Is there competition with fishermen ?
Laudelout, Arnaud; Libois, Roland ULg

in Cowx I.G. (Ed.) Interactions between fish and birds: implications for management (2003)

Lake Noukoué in southern Benin, is heavily exploited fishery, but it is also inhabited by numerous piscivorous birds, escpecially kingfishers. This study considers the similarity between the diet of ... [more ▼]

Lake Noukoué in southern Benin, is heavily exploited fishery, but it is also inhabited by numerous piscivorous birds, escpecially kingfishers. This study considers the similarity between the diet of kingfishers and fish available on the local market between mid-February to mi-May 1999, durng a low water level preriod. Excretory pellets were collected on the top of breeding banks and inside brood chambers. The diet was determined by comparing the bones recovered from the pellets with a reference collection. Eighteen prey categories were recognised in the 1099 diagnostic items. Kingfishers preyed mostly on cichlids (Sarotherodon melanotheron Rüppell and Hemichromis fasciatus Peters), clupeids (Ethmalosa fimbria (Bowdich)), eleotrids (Kribia sp.) and Hyporhamphus picarti (Val.). Prey size of H. fasciatus ranged from 22 to 73 mm (46.4 +/- 11.6 mm) and S. melanotheron from 24 to 65 mm (44 +/- 9.2 mm). The compositionof the diet varied depending on time and location. Overlap with marketed fish is limitid to S. melanotheron. [less ▲]

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See detailDevelopment and validation of a specific radioimmunoassay for equine osteocalcin
Carstanjen, Bianca; Sulon, Joseph ULg; Banga-Mboko, H. et al

in Domestic Animal Endocrinology (2003), 24(1), 31-41

This study describes for the first time the development and validation of a sensitive and specific radioimmunoassay (RIA) for equine osteocalcin (OC) quantification using purified equine OC as standard ... [more ▼]

This study describes for the first time the development and validation of a sensitive and specific radioimmunoassay (RIA) for equine osteocalcin (OC) quantification using purified equine OC as standard, tracer, and immunogen for antibody formation in rabbits. The assay allowed to measure equine serum OC levels with a sensitivity of 0.2 ng/mL. Immunoreactive serum OC values of clinically normal, different-aged horses ranged from 3.68 to 127.31 ng/mL. Intra- and inter-assay coefficients of variation (CV) were 6.2 and 8.2%, respectively. Serial equine scrum sample dilutions were linear. The recovery of equine OC from equine serum samples ranged from 93.88 to 107.9%. There was a tight correlation between OC values measured with the equine- specific OC RIA and two commercially available bovine-specific OC RIA kits. However, highest serum OC values were obtained with the equine-specific OC RIA. In conclusion, our equine-specific OC RIA is sensitive, linear, accurate, precise, and reproducible. The assay allowed to quantify OC in equine serum samples and might, therefore, be used to monitor equine osteoblast activity associated with bone diseases, exercise, therapy forms or diet. [less ▲]

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See detailLes techniques de soi chez Michel Foucault
Delruelle, Edouard ULg

in Hottois, Gilbert; Chabot, Pascal (Eds.) Les philosophes et la technique (2003)

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See detailUrban use of VHR images on Bukavu (Democratic Republic of Congo)
Binard, Marc ULg; De Man, J.; Séba, G. et al

in Proceedings of the Second Workshop of the EARSeL Special Interest Group on Remote Sensing for Developing Countries, Bonn, Germany September 18-20, 2002. EARSeL: Paris, France. (2003)

The main purpose of this study was to show potential uses of very high resolution (VHR) image in an urban analysis of Bukavu in the Democratic Republic of Congo. As for many of the Third-World cities ... [more ▼]

The main purpose of this study was to show potential uses of very high resolution (VHR) image in an urban analysis of Bukavu in the Democratic Republic of Congo. As for many of the Third-World cities, Bukavu grew up during the last decades and available topographical information on Bukavu dates back to the middle of the twentieth century. This lack of updated information can be compensated by an appropriate use of VHR images. In this study, IKONOS image recorded on the 14th February 2001 was used. Image registration are highly dependant on accurate Digital Elevation Models (DEM), these last ones are also useful in urban analyses. The range between the minimum and maximum altitudes observed in the image was more than 500 meters. Furthermore, the viewing inclination angle is more than 28 degrees. In this case, orthorectification is mandatory for correcting relief displacements. Nevertheless, the lack of good Ground Control Points (GPS’s) on the old topographic maps and the failure to collect field verification data in Bukavu explains the remaining global 2D RMSE of 10 meters. For easier image interpretation, multispectral (4m) and panchromatic (1m) images were fused together by means of the LMVM algorithm. Depending on the object, the Computer Aided Photo Interpretation (CAPI) uses or does not use the near infrared information (true or false colour composite). For a more detailed interpretation about the city morphology we draped the 1m multispectral fused image over the 1m resolution DEM grid. The Built-up Area Index (BAI) computed on the urban mask obtained by CAPI and classification of the vegetation, was compared with the 1954 situation interpreted from topographic maps. The present city shows higher BAI values and in the same time the centre of the city has clearly shifted southward. Statistical analyses are also done on built-up versus slope data. The lack of good GCP’s and the use of DEM produced inaccurate orthorectification which was not adequate for topographical features extraction. Nevertheless the present extensions of Bukavu built-up areas are more than the double of those observed at the beginning of the last half century. New constructions are located on steeper slopes where landslides are frequents. More features could be extracted from the Ikonos image if good GPS measurements were made and if verification by the city authorities was possible. Some practical applications of this study could involve determining better location of new Bukavu extensions. [less ▲]

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See detailEvolution of pressure distribution during apple compression tests measured with tactile sensors
Kleynen, Olivier; de la Cierva, Sonia; Destain, Marie-France ULg

in Acta Horticulturae (2003), (604),

The paper analyses the ability of thin-film tactile sensors in providing information during static compression tests of ‘Jonagold’ apples (Malus pumila) of different ripeness stages. Such sensors are able ... [more ▼]

The paper analyses the ability of thin-film tactile sensors in providing information during static compression tests of ‘Jonagold’ apples (Malus pumila) of different ripeness stages. Such sensors are able to measure the contact surface and the interfacial pressure distribution during compression of fruits, this latter being characterised by suitable mathematical parameters. Results of compression tests between two flat steel plates are presented. The differentiated evolution of the pressure distribution according to the fruit maturity is pointed out. Ability of the sensor in evaluating the firmness is also discussed. [less ▲]

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See detailVisual urban space assessment from sky shape analysis
Teller, Jacques ULg; Sarradin, F.; Siret, D.

in Gnauck, A.; Heinrich, R. (Eds.) Informatics for Environmental Protection: The Information Society and Enlargement of the European Union (EnviroInfo 2003) (2003)

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See detailBinding Problem
Sougné, Jacques ULg

in Nadel, L. (Ed.) Encyclopedia of Cognitive Science (2003)

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See detailMeasure Nouns (MNs), a case of ongoing grammaticalization?
Brems, Lieselotte ULg

Conference (2003)

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See detailNombres et jeux enfantins
Lempereur, Françoise ULg

in Enquêtes du Musée de la Vie Wallonne (2003), XX

Children learn to count at school and also by singing and playing traditional games. This paper goes through the traditional Walloon repertory and shows how it fits the childish rhythmics defined by ... [more ▼]

Children learn to count at school and also by singing and playing traditional games. This paper goes through the traditional Walloon repertory and shows how it fits the childish rhythmics defined by ethnomusicologist Constantin Brailoiu [less ▲]

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See detailExtase en ontnuchtering. Guido Gezelle en Herman de Coninck beyond discourse
Spinoy, Erik ULg

in Gezelliana (2003), (1), 45-71

A comparison of the literary views of the 19th-century romantic poet Guido Gezelle and his 20th-century counterpart Guido Gezelle reveal a series of striking resemblances, which are discussed in this ... [more ▼]

A comparison of the literary views of the 19th-century romantic poet Guido Gezelle and his 20th-century counterpart Guido Gezelle reveal a series of striking resemblances, which are discussed in this article. [less ▲]

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See detailPotential valorization of the fine light fraction of automotive shredder residues (ASR)
Bareel, Pierre-François; Bastin, David ULg; Frenay, Jean ULg

in Proceedings of the International Symposium of Metals and Energy Recovery (2003)

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See detailAfrique de l'Ouest: commerce d'oiseaux pas comme les autres
Libois, Roland ULg; Lougbégnon, Olou

Learning material (2003)

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See detailDe nouveaux entrelacs territoriaux, Globalisation et diversification des modes d'habiter.
Schmitz, Serge ULg

in Lask, Tomke (Ed.) Les constructions sociales de l'espace. Les territoires de l'anthropologie de la communicaiton. (2003)

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See detailPour aider une enfant à grandir… Lettres d’une religieuse à sa jeune sœur (1736-1750)
Henneau, Marie-Elisabeth ULg

in Hurel, Odon (Ed.) Érudition et commerce épistolaire. Jean Mabillon et la tradition monastique (2003)

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See detailAnalysis and Design of Ship Structure (Chap 18)
Rigo, Philippe ULg; Rizzutto, E.

in Ship Design and Construction (Vol 1) (2003)

The SNAME book is a ref book in ship Design and Construction. Chap 18, wriiten by P Rigo and his coleague focuss on Ship Structure. It is a typical lecture book.

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See detailNumerical simulations of tissue ingrowth and differentiation around a loaded titanium implant in a bone chamber
Van Oosterwyck, Hans; Geris, Liesbet ULg; Vander Sloten, Jos et al

in Proceedings of the symposium on integrated systems in dental healthcare (2003)

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See detailSacrifice and Ritualisation of History in Caribbean Drama.
Bada, Valérie ULg

in Glaap, Albert Rainer; Maufort, Marc (Eds.) Keying in to Postcolonial Cultures: Contemporary Plays in English. (2003)

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