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See detailImpact of acute cadmium exposure on the trunk lateral line neuromasts and consequences on the "C-start" response behaviour of the sea bass (Dicentrarchus labrax L.; Teleostei, Moronidae).
Faucher, Karine ULg; Fichet, Denis; Miramand, Pierre et al

in Aquatic Toxicology (2006), 76(3-4), 278-94

Behavioural responses of sea bass Dicentrarchus labrax were investigated after exposure to cadmium ions in laboratory-controlled conditions. The aim of this study was to discover whether environmental ... [more ▼]

Behavioural responses of sea bass Dicentrarchus labrax were investigated after exposure to cadmium ions in laboratory-controlled conditions. The aim of this study was to discover whether environmental exposure to cadmium ions inactivates fish lateral line system neuromasts, and to determine the behavioural consequences of such a sensory blockage. For this, fish escape behaviour in response to an artificial water jet was recorded using a 25-frames s(-1) analog video camera before and after cadmium exposure. Experimental set up was tested with fish whose lateral line system was artificially inactivated by antibiotics (gentamicin and streptomycin). Histological analyses with scanning electron microscopy showed antibiotic treatment destroyed lateral line system neuromasts. In addition, these fish did not respond to stimulations provoked by the water jet after antibiotic treatment. Fish escape behaviour was then recorded before and after cadmium exposure at two different concentrations. When fish were exposed to the first concentration of cadmium tested (0.5 microg l(-1), which represents the maximal cadmium concentration encountered in contaminated estuaries), no alteration in neuromast tissue was observed. In addition, before cadmium exposure, fish responded positively in 98.41 +/- 4.95% of lateral line system stimulations (escape behaviour in response to the water jet). After cadmium exposure, no behavioural modification could be detected: the fish responded positively in 95.16 +/- 9.79% of stimulations (chi(2) = 2.464, p = 0.116). In contrast, the high cadmium concentration used (5 microg l(-1), which represents 10 times the concentration occurring in highly polluted estuarine areas) involved severe neuromast tissue damage. Just after such cadmium exposure, fish showed only 41.67 +/- 35.36% of positive responses to their lateral line system stimulations, while they responded positively in 95.93 +/- 9.10% of stimulations under control conditions (chi(2) = 24.562, p < 0.0001). Their lateral line system neuromasts seemed to regenerate about 1 month after cadmium exposure. Associated with this regeneration, from the 21st day after cadmium exposure, their escape behaviour had recovered and was not significantly different from that recorded under control conditions (86.74 +/- 20.82%, chi(2) = 2.876, p = 0.090). This study shows that although 5 microg l(-1) cadmium is able to damage lateral line system neuromasts and causes fish behavioural alterations, fish exposed to 0.5 microg l(-1) cadmium displayed neither tissue neuromast nor behavioural modification. [less ▲]

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See detailProfiling food consumption : comparison between USA and EU
Duquesne, Brigitte ULg; Matendo, Sadrac; Lebailly, Philippe ULg

in Competitiveness in Agriculture and the Food Industry: US and EU Perspectives (2006)

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See detailRépublique démocratique du Congo. Le système politique de la troisième république : Genèse d’une démocratie attendue
Kabamba, Bob ULg; Verjans, Pierre ULg

in Revue de la Faculté de Droit de l'Université de Liège (2006), (n°2006/4), 561-582

Les élections de 2006 en République démocratique du Congo sont la conséquence d'un long processus commencé par les accords de paix à l'issue de la guerre qui a déchiré le pays. Elles sont aussi le début d ... [more ▼]

Les élections de 2006 en République démocratique du Congo sont la conséquence d'un long processus commencé par les accords de paix à l'issue de la guerre qui a déchiré le pays. Elles sont aussi le début d'un processus démocratique classique. Les résultats de ces élections méritent d'être analysés en terme politique mais aussi démographique. [less ▲]

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See detailCoordinate rotations
Heinesch, Bernard ULg

Conference (2006)

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See detailSampling strategy for CO2 sampling
Heinesch, Bernard ULg

Conference (2006)

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See detailRapport de mission (du 30.09 au 11.10.2006) : AMELIORATION DE L’HABITAT ET DES INFRASTRUCTURES SOCIO-ECONOMIQUES POUR UN DEVELOPPEMENT INTEGRE DE LA COLLECTIVITE RURALE DE WAMAZA-MANIEMA EN REPUBLIQUE DEMOCRATIQUE DU CONGO
Hanocq, Philippe ULg

Report (2006)

Avec l’appui du service d’urbanisme de l’ULg, une série de projets sociaux ont été identifiés en 1995 à Wamaza, dans la région du Maniema et du Sud Kivu, en République Démocratique du Congo. Cela a permis ... [more ▼]

Avec l’appui du service d’urbanisme de l’ULg, une série de projets sociaux ont été identifiés en 1995 à Wamaza, dans la région du Maniema et du Sud Kivu, en République Démocratique du Congo. Cela a permis d’initier un programme de recherche - action couvrant un large éventail d’interventions entrant dans le champ de l’aménagement du territoire et de l’urbanisme. Le programme de recherche s’appuyait sur une idée maîtresse : « l’amélioration de l’habitat rural peut freiner l’exode rural et contribuer ainsi au développement endogène des collectivités paysannes ». [less ▲]

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See detailCompte rendu de Les Objets de la mémoire
George, Philippe ULg

in Revue d'Histoire Ecclésiastique (2006)

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See detailIconographies de saints mosans : Munich, Bayerische Staatsbibliothek, Cod. Gall. 3
George, Philippe ULg

in Bulletin de la Société Royale Le Vieux-Liège (2006)

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See detailEffect of the exotic invasive plant Solidago gigantea on soil phosphorus status
Chapuis-Lardy, L.; Vanderhoeven, SONIA ULg; Dassonville, N. et al

in Biology & Fertility of Soils (2006), 42(6), 481-489

Invasions by exotic plant species can modify biogeochemical cycles and soil properties. We tested whether invasion by early goldenrod (Solidago gigantea, Asteraceae) modifies soil phosphorus pools at ... [more ▼]

Invasions by exotic plant species can modify biogeochemical cycles and soil properties. We tested whether invasion by early goldenrod (Solidago gigantea, Asteraceae) modifies soil phosphorus pools at three sites in Belgium. Aboveground phytomass and soil samples (0-10 cm) were collected in early goldenrod patches and in adjacent, uninvaded, grassland vegetation. Soil P fractions varied between the three sites in line with corresponding differences in organic matter, carbonate and clay contents. In addition to site-specific impacts, plots invaded by goldenrods generally had higher concentrations of labile P [i.e. resin-extractable inorganic P (Pi) and bicarbonate-extractable Pi and organic P]. Soil CO2 release and alkaline and acid phosphomonoesterase activities were also higher in invaded plots, suggesting that the increase in labile Pi was due to enhanced mineralization. Phosphorus uptake by vegetation was 1.7-2.1 times higher in invaded plots, mostly due to the higher annual yield of S. gigantea. Altogether, the results indicate that S. gigantea enhances P turnover rates in invaded ecosystems. [less ▲]

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See detailTableau clinique et mécanismes physiopathologiques des principales maladies inflammatoires chroniques des voies respiratoires du cheval
Mesnil, Claire ULg; Bureau, Fabrice ULg; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (2006), 150(4), 227-240

The respiratory tract of the horse can be the seat of several chronic inflammatory diseases whose principal ones are the recurrent airway obstruction, the inflammatory airway disease, the summer pasture ... [more ▼]

The respiratory tract of the horse can be the seat of several chronic inflammatory diseases whose principal ones are the recurrent airway obstruction, the inflammatory airway disease, the summer pasture-associated obstructive pulmonary disease and the follicular pharyngitis. These diseases can have an important impact on horses’ health and on their sports performances. A good knowledge of their aetiologies and their physiopathological mechanisms would allow a better control of these affections. However, even if many studies were made on this subject, there are currently very few certainties as for the inflammatory mechanisms governing these diseases. This article aims to make an inventory of knowledge and deficiencies concerning these four chronic inflammatory diseases [less ▲]

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See detailA fourth level of Frasnian carbonate mounds along the south side of the Dinant Synclinorium (Belgium)
Boulvain, Frédéric ULg; Coen-Aubert, M.

in Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre (2006), 76

An additional level of Frasnian mounds has been recognized in the La Boverie quarry at Rochefort and in four boreholes drilled in the Nord quarry at Frasnes, on the south side of the Dinant Synclinorium ... [more ▼]

An additional level of Frasnian mounds has been recognized in the La Boverie quarry at Rochefort and in four boreholes drilled in the Nord quarry at Frasnes, on the south side of the Dinant Synclinorium. It occurs between the Arche and Lion Members belonging respectively to the Moulin Liénaux and Grands Breux Formations, in the middle part of the stage. The new name of La Boverie Member is introduced at the top of the Moulin Liénaux Formation, for the deposits lying between the Arche and Bieumont Members; the latter is the basement of the Lion mound. The same succession has been observed in the sections of Moulin Bayot close to Vodelée, in the southeastern part of the Philippeville Anticlinorium. The La Boverie Member starts with rather deep bioclastic sediments, after the collapse of the carbonate factory at the top of the Arche mound. In the upper part of the lithostratigraphic unit, there is a thin buildup characterized by relatively shallow facies. The solitary rugose corals Macgeea boveriensis n. sp., M. socialis SOSHKINA, 1939 and Sinodisphyllum posterum (IVANIA, 1965) collected in the lower part of the La Boverie Member are described in detail whereas the revision of S. kielcense (ROZKOWSKA, 1979) occurring in the Bieumont Member is also provided. [less ▲]

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See detailDe quelques ‘retours soninké’ aux différents âges de la vie: Circulations entre la France et le Mali
Razy, Elodie ULg

in Journal des Anthropologues (2006), 106-107

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See detailLa mammite bovine : de l’initiation à la résolution
Boutet, Philippe ULg; Bureau, Fabrice ULg; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (2006), 150(1), 1-26

The bovine mastitis : from initiation to resolution The cure of a cow suffering from a bacterial mastitis relies on the balance between the eradication of the pathogen and the resolution of the ... [more ▼]

The bovine mastitis : from initiation to resolution The cure of a cow suffering from a bacterial mastitis relies on the balance between the eradication of the pathogen and the resolution of the inflammatory response, two processes that are essential to come back to a normal milk composition with low somatic cell count. The persistence of the inflammatory response, which main consequence is a reduction in milk yield, is a feature of chronic mastitis. This frequent disease depends on inappropriate host-pathogen interactions and is not yet well understood. This review resumes the main defence mechanisms of the bovine mammary gland, emphasizing the predominant roles played by the neutrophil, and brings some precisions on lipoxin implications in the resolution of inflammation. Reasons that may explain the persistence of the inflammatory reaction, a phenomenon found in the Staphylococcus aureus chronic mastitis, are also discussed. [less ▲]

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See detailInvasion intracellulaire des cellules non-phagocytaires par Staphylococcus aureus
Boulanger, Delphine; Bureau, Fabrice ULg; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (2006), 150(1), 27-42

Intracellular invasion of Staphyloccocus aureus in nonphagocytic cells Staphylococcus aureus often causes chronic diseases. It is now believed that recurrence of these infections could be related to the ... [more ▼]

Intracellular invasion of Staphyloccocus aureus in nonphagocytic cells Staphylococcus aureus often causes chronic diseases. It is now believed that recurrence of these infections could be related to the ability of S. aureus to invade and persist within nonphagocytic cells. Adherence to eucaryotic cells is crucial for S. aureus to invade and persist within invasion and depends on interactions between bacterial fibronectin-binding proteins, fibronectin and the host cell fibronectin receptor, integrin alpha(5)beta(1). It is currently established that fibronectin acts as a bridging molecule. Penetration of S. aureus in host cells requires also activation of protein tyrosine kinases that mediate signal transduction and actin polymerization leading to cytoskeletal rearrangements. After internalization, S. aureus either remains in membrane-bound vacuoles or appears free in the cytoplasm. After bacterial proliferation, S. aureus induces host cell apoptosis or persist inside cells as small colony variants, which represent a less virulent subpopulation of S. aureus that grows slower. Although numerous in vitro and in vivo studies have demonstrated the ability of S. aureus to invade nonphagocytic cells, additional experiments have to be realized to understand the relevance of intracellular localization in vivo. [less ▲]

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See detailContribution to the knowledge of lichens in northern France
Diederich, Paul; Van Den Broeck, Dries; Ertz, Damien et al

in Bulletin de la Société des Naturalistes Luxembourgeois (2006), 106

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See detailUtilisation et évaluation du thésaurus belge 3BT adapté au Rwanda
De Jonghe, M.; Jamoule, M.; Porignon, Denis ULg

in Revue Médicale de Bruxelles (2006), 27

The Kigali university medical centre (CHUK) lacks visibility on its activities for many years. Institution management as well understanding the institution as the corner stone of the Rwandese health ... [more ▼]

The Kigali university medical centre (CHUK) lacks visibility on its activities for many years. Institution management as well understanding the institution as the corner stone of the Rwandese health system and reinforcement of its visibility are all health policy major issues. Nevertheless, to this point no such tool has been developed nor implemented. The objective is to assess the feasibility of the use of the thesaurus 3BT as data collection tool in a Rwandese health institution. In august 2005, the thesaurus 3BT (Belgian, bilingual, biclassified ICD-10/ICPC-2) adapted to the CHUK has been implemented. Main issues : encoding quality and thesaurus operationality. Qualitative analysis has been performed on 899 coding of which 16 empty. Low occurrences (! 0.2 %) of about 25 % of codings of clinical diagnosis show the need for using a thesaurus but also to upgrade it. Near 45 % of the empty codings could be fulfilled with a quick look to the original medical record. Some diagnoses are missing in the thesaurus 3BT. 66 % of which have similar concepts in the thesaurus although not identifiable by a lay person. Finally, a clinical data blind coding test by a doctor used to classifications and by a lay person used to code clinical diagnosis from medical records of the hospitalised patients shows an exact similarity in 70 % of the coding and a loss of coding precision in 20 %. No coding error has been identified at this time. In conclusion, operationality of the thesaurus is quite acceptable in this study. The thesaurus makes easy the coding of clinical diagnosis even by lay people. Quality of data is enough to be able to interpret the quantitative results of the coding process. This study has to be repeated on a wider basis. [less ▲]

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See detailLa recherche en Santé: Systèmes, acteurs et savoirs en République Démocratique du Congo
Porignon, Denis ULg; Hennart, Philippe; DRAMAIX, Michèle et al

in Civilisations (2006), LIV(1-2), 167-178

Research activities are part of the cooperation model developed by the Cemubac. The foundation for the research is based on strengthening the capacity of health systems and services resulting in the ... [more ▼]

Research activities are part of the cooperation model developed by the Cemubac. The foundation for the research is based on strengthening the capacity of health systems and services resulting in the improvement of care offered to communities. The research (quantitative and qualitative) has a high participatory dimension and was able to develop thanks to partnerships with professionals and beneficiaries. It relies heavily on the implication of national public staff trained specifically for this work and on long-term presence in the area. The work in Kivu has continued over the past fifteen years despite a deteriorating social, economic and security context. As an organism for acquiring knowledge, the Cemubac’s work in Kivu is primarily geared towards improving health services. [less ▲]

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