Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailFracture prevention in postmenopausal women.
Bruyère, Olivier ULg; Edwards, John; Reginster, Jean-Yves ULg

in Clinical Evidence (2002), 8

Detailed reference viewed: 33 (23 ULg)
Full Text
Peer Reviewed
See detailThe fragileX syndrome : What about the deficit innthe pragmatic component of language ?
Comblain, Annick ULg; Elbouz, Mouna

in Journal of Cognitive Education and Psychology (2002), 2(3), 29-58

Language profile of fragile-X syndrome individuals looks like the one of Down syndrome individuals, except for phonological and pragmatic abilities. If the pragmatic aspect of language is relatively ... [more ▼]

Language profile of fragile-X syndrome individuals looks like the one of Down syndrome individuals, except for phonological and pragmatic abilities. If the pragmatic aspect of language is relatively preserve in Down syndrome, it is one of the most impaired language component in fragile-X syndrome. Discourse of fragile X persons generally contains of repetitions, perseverations and stereotypies. These behaviors are well documented in the literature but, we do not know, for now, the reasons of these repetitions and perseverations. Are they the consequence of a real pragmatic disorder or the consequence of motor difficulties ? Another aspect of the pragmatic component of language remains almost unexplored in this pathology : the common ground management and the organization of the old and the new information in conversation. It is this last point that we want to explore. We decided to conduct a preliminary study with four fragile-X boys aged from 6 to 12 years-old. Groups of two boys work together on referential communication tasks. We proposed traditional experimental situations in a non-eye contact condition between participants. We compare the results of our subjects with those of typically developing children matched on the lexical age. Fragile-X boys are less efficient than typically developing children when the message to give or receive contains spatial terms or "ordinal" attributes. They also manage less efficiently with an incomplete message especially when it is given by an adult. [less ▲]

Detailed reference viewed: 58 (1 ULg)
Full Text
Peer Reviewed
See detailA multistage field test of wheelchair users for evaluation of fitness and prediction of peak oxygen consumption
Vanderthommen, Marc ULg; Francaux, M.; Colinet, Cédrik et al

in Journal of Rehabilitation Research & Development (2002), 39(6, Nov-Dec), 685-692

An incremental multistage field test (MFT) for wheelchair users was developed to evaluate physical fitness and predict peak oxygen consumption (VO2). Using auditory feedback, the participants (n = 37 ... [more ▼]

An incremental multistage field test (MFT) for wheelchair users was developed to evaluate physical fitness and predict peak oxygen consumption (VO2). Using auditory feedback, the participants (n = 37) were directed to wheel around an octagonal course, increasing their velocity every minute until exhaustion. Wheelchair velocity and metabolic parameters were recorded with the use of a speedometer and a portable spirometer system. The average number of exercise levels performed (MFT score) was 9.17 +/- 5.81, resulting in a peak heart rate (HR) of 99.0 +/- 13.9% of the theoretical maximum. A test-retest analysis (n = 10) showed that the MFT was reliable regarding MFT score, peak VO2, and peak HR reached. Stepwise multiple regression based on individual, wheelchair, propulsion technique, and physiological parameters revealed that the MFT score was the best and only predictor of peak VO2 (mL/min/kg) (= 18.03 + 0.78 MFT score, r(2) = 0.59). The MFT assesses wheelchair mobility and estimates peak VO2 encountered during the test. [less ▲]

Detailed reference viewed: 228 (5 ULg)
Full Text
Peer Reviewed
See detailDetermination of affinity, stoichiometry and sequence selectivity of minor groove binder complexes with double-stranded oligodeoxynucleotides by electrospray ionization mass spectrometry
Rosu, Frédéric ULg; Gabelica, Valérie ULg; Houssier, Claude ULg et al

in Nucleic Acids Research (2002), 30(16), 82

Electrospray mass spectrometry was evaluated regarding the reliability of the determination of the stoichiometries and equilibrium association constants from single spectra. Complexes between minor groove ... [more ▼]

Electrospray mass spectrometry was evaluated regarding the reliability of the determination of the stoichiometries and equilibrium association constants from single spectra. Complexes between minor groove binders (Hoechst 33258, Hoechst 33342, DAPI, netropsin and berenil) and 12mer oligonucleotide duplexes with a central sequence (A/T)(4) flanked by G/C base pairs were chosen as model systems. To validate the electrospray ionization mass spectrometry (ESI-MS) method, comparisons were made with circular dichroism and fluorescence spectroscopy measurements. ESI-MS allowed the detection of minor (2 drug + DNA) species for Hoechst 33258, Hoechst 33342, DAPI and berenil with duplex d(GGGG(A/T)(4)GGGG). d(CCCC(A/T)(4)CCCC), which were undetectable with the other techniques. Assuming that the duplexes and the complexes have the same electrospray response factors, the equilbrium association constants of the 1:1 and 2:1 complexes were determined by ESI-MS, and the values show a good quantitative agreement with fluorescence determined constants for Hoechst 33258 and Hoechst 33342. It is also shown that ESI-MS can quickly give reliable information on the A/T sequence selectivity of a drug: the signal of a complex is directly related to the affinity of the drug for that particular duplex. The potential of ESI-MS as a qualitative and quantitative affinity screening method is emphasized. [less ▲]

Detailed reference viewed: 52 (5 ULg)
Full Text
Peer Reviewed
See detailEcology of Salmonella in slaughter pigs digestive tract and study of the contamination of carcasses
Boudry, Christelle ULg; Korsak Koulagenko, Nicolas ULg; Jacob, Benoit et al

in Annales de Médecine Vétérinaire (2002), 146(6, DEC-JAN), 353-360

This article presents a study on the Salmonella asymptomatic carriage of finishing pigs and its consequences on the contamination of carcasses. Twenty finishing pigs were followed to determine the faecal ... [more ▼]

This article presents a study on the Salmonella asymptomatic carriage of finishing pigs and its consequences on the contamination of carcasses. Twenty finishing pigs were followed to determine the faecal shedding of Salmonella. No sample was positive but at the slaughterhouse, the analysis of tonsils and certain parts of the digestive tract (mesenterial lymph nodes, ileum and large intestine content) revealed that 70% of the pigs were positive. The strains isolated from the faecal samples of the large intestine and from tonsils were identical, which might indicate that there has been an oral contamination from pig to pig due to the shedding of Salmonella or a carriage of different strains in different organs. The mesenterial lymph nodes (40 % positive) were contaminated by strains which were different from those from the faecal samples and tonsils. Salmonella strains were only found on the swabs of one carcass. A complementary assay has shown the negative role played by the scalding step. This latter may contaminate the oral and rectal cavities of slaughtered animals. This entire study reveals the difficulty to predict the contamination risk at the slaughterhouse from the analysis of finishing pigs faecal samples. Therefore, a better knowledge of the carriage and the shedding of Salmonella during the finishing period and during the slaughter is necessary to minimise meat contamination. [less ▲]

Detailed reference viewed: 191 (51 ULg)
Full Text
Peer Reviewed
See detailInfluence of a water purification unit on the contamination level of salmonella in outcoming water and sludge
Jacob, Benoit; Korsak Koulagenko, Nicolas ULg; Grooven, Bénédicte et al

in Annales de Médecine Vétérinaire (2002), 146(5), 303-310

Foodborne pathogens occasionally harboured in the gastro-intestinal tract of some domestic animals may be retrieved in slaughterhouses waste water and in sludge of water purification units. Salmonella ... [more ▼]

Foodborne pathogens occasionally harboured in the gastro-intestinal tract of some domestic animals may be retrieved in slaughterhouses waste water and in sludge of water purification units. Salmonella, athogen common to man and Animals, is often used as a biological risk indicator. The aim of the present study was to assess effectiveness of a recent water purification unit by rapid and semi-quantitative detection of this micro-organism. The water purification unit collects waste water of seven food-processing industries, including a pig slaughterhouse. This latest was the main source of Salmonella contamination with a level of more 103 colony forming unit (CFU) per ml, that was very close to the average level of contamination of total incoming waste water. The unit, whose principle of action is based on biological purification, has permitted a 4 log10 reduction of Salmonella contamination, with a final contamination level of less than 1 CFU/ml. It was observed only a little decrease of contamination levels during the biological treatment steps, in contrast with the one observed during the clarification step. This was due to adsorption of bacteria by material in suspension. Fresh sludge were harboured an average of 102 CFU of Salmonella per gram. In the beginning of December 1999, two sludge piles were let on the ground along a field and sampled microbiologically every month. Seven month later, no Salmonella were recovered from the piles. 309 [less ▲]

Detailed reference viewed: 91 (10 ULg)
Full Text
Peer Reviewed
See detailEffects of incidental and intentional feature binding on recognition: a behavioural and PET activation study
Lekeu, Françoise ULg; Van der Linden, Martial ULg; Collette, Fabienne ULg et al

in Neuropsychologia (2002), 40(2), 131-144

Using Positron Emission Tomography (PET), we investigated cerebral regions associated with the episodic recognition of words alone and words bound to contextual colours. Two modes of colour encoding were ... [more ▼]

Using Positron Emission Tomography (PET), we investigated cerebral regions associated with the episodic recognition of words alone and words bound to contextual colours. Two modes of colour encoding were tested: incidental and intentional word-to-colour binding. Word-only recognition was associated with brain activation in a lexico-semantic left middle temporal region and in the cerebellum following an incidental colour encoding, and with brain activation in the left posterior middle frontal gyrus, right anterior cingulate and right inferior frontal gyrus following an intentional encoding. Recognition of bound features was associated with activation in left prefrontal and superior parietal regions following an incidental colour encoding, and with preferential right prefrontal cortex activation following an intentional colour encoding. Our results are in line with the hypothesis of a parietal involvement in context processing, and prefrontal areas in monitoring retrieval processes. Our results also support the hypothesis of a 'cortical asymmetry for reflective activity' (CARA). [less ▲]

Detailed reference viewed: 28 (3 ULg)
Full Text
Peer Reviewed
See detailEffets perturbateurs endocriniens des pesticides organochlorés
Charlier, Corinne ULg; Plomteux, Guy ULg

in Acta Clinica Belgica. Supplementum (2002), (1), 2-7

Xenoestrogens such organochlorine pesticides are known to induce changes in reproductive development, function or behaviour in wildlife. Because these compounds are able to modify the estrogens metabolism ... [more ▼]

Xenoestrogens such organochlorine pesticides are known to induce changes in reproductive development, function or behaviour in wildlife. Because these compounds are able to modify the estrogens metabolism, or to compete with estradiol for binding to the estrogen receptor, it may be possible that these products affect the risk of developing impaired fertility, precocious puberty or some kinds of cancer in man. [less ▲]

Detailed reference viewed: 152 (13 ULg)
Full Text
Peer Reviewed
See detailLes compétences à l'épreuve : l'évaluation en lecture
Lafontaine, Dominique ULg

in Enjeux : Revue de Formation Continuée et de Didactique du Français (2002), 55

Detailed reference viewed: 40 (1 ULg)
Full Text
Peer Reviewed
See detailDes pratiques aux performances : la littératie chez les jeunes de 15 ans
Lafontaine, Dominique ULg

in Lettre de la DFLM (La) (2002), 30

Detailed reference viewed: 53 (0 ULg)
Full Text
Peer Reviewed
See detailLes lectures obligatoires en 5e année de l'enseignement secondaire de transition en Communauté française de Belgique
Lafontaine, Dominique ULg

in Enjeux : Revue de Formation Continuée et de Didactique du Français (2002), 55

Detailed reference viewed: 27 (1 ULg)
Full Text
Peer Reviewed
See detailIsokinetic assessment of the forearm and wrist muscles
Forthomme, Bénédicte ULg; Croisier, Jean-Louis ULg; Foidart-Dessalle, Marguerite ULg et al

in Isokinetics & Exercise Science (2002), 10(3), 121-128

Detailed reference viewed: 34 (3 ULg)
Full Text
Peer Reviewed
See detailLe langage des personnes âgées porteuses d'une trisomie 21
Rondal, Jean-Adolphe ULg; Comblain, Annick ULg

in Orthophonie et Logopédie (2002), 1

Detailed reference viewed: 81 (4 ULg)
Full Text
See detailLe miracle 'flamand' n'est pas prêt-à-porter…
Lafontaine, Dominique ULg

in Cahiers du Service de Pédagogie Expérimentale (SPE) (2002), 9-10

Detailed reference viewed: 37 (7 ULg)
Full Text
See detailLes acquis des jeunes de 15 ans en sciences : des progrès restent à faire...
Lafontaine, Dominique ULg; Burton, Réginald

in Cahiers du Service de Pédagogie Expérimentale (SPE) (2002), 9-10

Detailed reference viewed: 14 (2 ULg)
Full Text
Peer Reviewed
See detailMagnetic and transport measurements on melt-textured DyBCO single domains
Vanderbemden, Philippe ULg; Misson, Vincent; Ausloos, Marcel ULg et al

in Physica C: Superconductivity (2002), 372(Part 2), 1225-1228

In this communication we report critical current measurements of melt processed DyBa2Cu3O7-x samples determined by several measuring techniques. First the material was characterized by AC susceptibility ... [more ▼]

In this communication we report critical current measurements of melt processed DyBa2Cu3O7-x samples determined by several measuring techniques. First the material was characterized by AC susceptibility and DC magnetization. The results are characteristic of good quality melt-processed (RE)BCO material with T-c = 89 K and Jc(77 K, 1 T) = 10^4 A/cm^2. Next, pulsed currents were used in order to determine both I-V curves and transport critical currents. The origin of the discrepancy between transport and magnetic data has been discussed. The results point out significant local variations of the critical current density throughout the single domain. (C) 2002 Elsevier Science B.V. All rights reserved. [less ▲]

Detailed reference viewed: 28 (6 ULg)
Full Text
Peer Reviewed
See detailMagnetic properties of Ga-doped lanthanum manganite with controlled oxygen stoichometry
Vertruyen, Bénédicte ULg; Hebert, Sylvie; Maignan, Antoine et al

in Crystal Engineering (2002), 5

Stoichiometric LaMnO3 is an insulator whose A-type antiferromagnetic structure at low temperature is mainly connected to the Jahn-Teller distortion of the MnO6 octahedra. The substitution of non magnetic ... [more ▼]

Stoichiometric LaMnO3 is an insulator whose A-type antiferromagnetic structure at low temperature is mainly connected to the Jahn-Teller distortion of the MnO6 octahedra. The substitution of non magnetic d(10) Ga3+ ions on the manganese site disrupts the orbital and spin orderings of the manganese ions and has a strong influence on the physical properties. The antiferromagnetic order is progressively destroyed while the ferromagnetic component increases. At the same time, the distortion of the orthorhombic cell decreases and the high temperature structural Jahn-Teller transition disappears. Such studies on manganese site substitutions give insight into the physics of the Mn-O three-dimensional network, which is supposed to be the key feature in the CMR manganites. (C) 2003 Elsevier Science Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 29 (7 ULg)
Full Text
Peer Reviewed
See detailMolecular and pigment studies of the picophytoplankton in a region of the Southern Ocean (42-54 degrees S, 141-144 degrees E) in March 1998
Wilmotte, Annick ULg; Demonceau, Caroline; Goffart, Anne ULg et al

in Deep-Sea Research Part II, Topical Studies in Oceanography (2002), 49(16), 3351-3363

Seven filtered seawater samples (depths between 30 and 55 m) collected during the SAZ project of the Austral summer of 1997-1998 were used for a simultaneous study of the picophytoplankton pigments based ... [more ▼]

Seven filtered seawater samples (depths between 30 and 55 m) collected during the SAZ project of the Austral summer of 1997-1998 were used for a simultaneous study of the picophytoplankton pigments based on high-performance liquid chromatography (HPLC) analyses and flow cytometry, and of the molecular diversity of the picophytoplankton based on their rDNA sequences. The sampling sites could be divided into three temperature zones, distinguished by their proximity to the Sub-Antarctic and Polar Fronts. HPLC analysis of total chlorophylls and carotenoids showed fairly low phytoplankton concentrations (77-262 ng chl al(-1)), with minimal values of the pigments in the two samples of the Polar Front Zone around 54degreesS (water temperature of 4degreesC at time of collection). In this zone, a similar decrease of particles, identified as cyanobacteria on the basis of their fluorescence, was observed by flow cytometry. Sequences very similar to the 16S rDNA sequence of Synechococcus WH8103 were present in all samples. This Synechococcus genotype is thus found in the Southern Ocean in addition to the Atlantic and Pacific locations where it has been previously observed. The yield of PCR products was lower in the two samples taken in the Polar Front Zone, showing a good agreement between molecular and pigment data. 16S rDNA sequences of plastids of eukaryotic algae also were retrieved, mostly related to those of an environmental clone called OM164, which has not been cultivated but has phylogenetic affinities to the Raphidophyceae. (C) 2002 Elsevier Science Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 44 (1 ULg)
Full Text
See detailPréface
Thirion, Paul ULg

in Denecker, Claire (Ed.) Les compétences documentaires : des processus mentaux à l'utilisation de l'information (2002)

Detailed reference viewed: 37 (15 ULg)