Publications ORBi OA
Bookmark and Share    
Full Text
See detailFeature extraction for non-linear model updating
Kerschen, Gaëtan ULg; Golinval, Jean-Claude ULg

in International Conference on Structural Dynamics Modelling, Funchal, 2002 (2002, June)

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detail"Arrachez-moi ce coeur!": de la crainte du rejet au délire après transplantation cardiaque
Triffaux, Jean-Marc ULg; Demoulin, J. C.; Limet, Raymond ULg

in Revue Médicale de Liège (2002), 57(6), 389-92

Detailed reference viewed: 21 (6 ULg)
Full Text
Peer Reviewed
See detailStudy of CCD mosaic configurations for the ILMT: Astrometry and photometry of point sources in the absence of a TDI corrector
Vangeyte, B.; Manfroid, Jean ULg; Surdej, Jean ULg

in Astronomy and Astrophysics (2002), 388(2), 712-731

The image deformations induced by the time-delay integration (TDI) mode, used with a CCD camera at the prime focus of a Liquid Mirror Telescope (LMT), can be corrected for by a system of lenses ... [more ▼]

The image deformations induced by the time-delay integration (TDI) mode, used with a CCD camera at the prime focus of a Liquid Mirror Telescope (LMT), can be corrected for by a system of lenses, simultaneously with the optical aberrations. However, before adopting the design of a TDI corrector, we may wonder what is the importance of the TDI image deformations and how to possibly reduce these by choosing optimal mosaic configurations of CCDs, covering an equivalent field of view. In a first step, we have simulated the point spread function (PSF) deformation due to the TDI mode only, for different selected mosaic configurations. We have then estimated the importance of the astrometric and photometric errors induced by the TDI deformation. By simulating star fields with the same synthetic PSF and taking into account realistic sources of noise (cf. CCD readout noise, photon noise and sky background), we have derived the limiting magnitudes for photometry and astrometry for the case of a 4 m LMT. [less ▲]

Detailed reference viewed: 24 (6 ULg)
Full Text
Peer Reviewed
See detailHypertension artérielle et artériopathie
Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2002), 57(6), 370-374

High blood pressure as other factors of atherosclerosis is a well-known risk factor for development of peripheral arterial disease. A patient characterized by an isolated systolic hypertension and a low ... [more ▼]

High blood pressure as other factors of atherosclerosis is a well-known risk factor for development of peripheral arterial disease. A patient characterized by an isolated systolic hypertension and a low ankle/arm systolic blood pressure ratio very often presents coronary heart disease. Practising exercise (such as walking), stoping smoking and following an adapted diet are recommended. Hypertension treatment must be considered as a secondary prevention approach with a blood pressure normalisation as a target. All the different classes of antihypertensive drugs can be used, but with a marked preference for angiotensin converting enzyme (with caution for the renal artery stenosis risk) and for betablockers to improve the potential coronary heart disease (care is needed in the presence of severe peripheral arterial disease). [less ▲]

Detailed reference viewed: 99 (2 ULg)
Full Text
Peer Reviewed
See detailCultiver un avantage technologique dans les réseaux, le cas de la Compagnie Générale des Eaux
Froehlicher, Thomas ULg; Baroncelli, Allessandro; Assens, Christophe

in Annales des Mines. Gérer et Comprendre (2002), 68

Detailed reference viewed: 24 (3 ULg)
Full Text
Peer Reviewed
See detailPeut-on concilier la solidarité et la justice ? Le cas de l'insertion wallonne
Jacquemain, Marc ULg

in Déviance et Société (2002), 26

La politique d'insertion sociale peut avoir une fonction latente et une fonction manifeste. La fonction manifeste est de remettre les chômeurs à l'emploi. La fonction latente semble plutôt être de les ... [more ▼]

La politique d'insertion sociale peut avoir une fonction latente et une fonction manifeste. La fonction manifeste est de remettre les chômeurs à l'emploi. La fonction latente semble plutôt être de les maintenir socialisés. Mais la mise en oeuvre de la fonction latente n'est idéologiquement possible que sous le couvert de la fonction manifeste [less ▲]

Detailed reference viewed: 32 (9 ULg)
Full Text
See detailDistributions des valeurs extrêmes
Donneau, Anne-Françoise ULg

Master's dissertation (2002)

Detailed reference viewed: 15 (2 ULg)
Full Text
Peer Reviewed
See detailReduction in vertebral fracture rates by a combination of monofluorophosphate and raloxifene in postmenopausal osteoporosis
Durez, P.; Felsenberg, D.; Stepan, J. et al

in Annals of the Rheumatic Diseases (2002, June), 61(Suppl.1),

Detailed reference viewed: 15 (7 ULg)
Full Text
Peer Reviewed
See detailFirst clinical results of licofelone (ml3000), an inhibitor of COX-1, COX-2 and 5-LOX, for the treatment of osteoarthritis
Reginster, Jean-Yves ULg; Bias, P.; Buchner, A.

in Annals of the Rheumatic Diseases (2002, June), 61(Suppl.1),

Detailed reference viewed: 44 (6 ULg)
Full Text
Peer Reviewed
See detailPain relief is not a confounder in joint space narrowing assessment of full extension knee radiographs
Pavelka, K.; Rovati, Lucio C; Gatterova, J. et al

in Annals of the Rheumatic Diseases (2002, June), 61(Suppl.1), 118

Detailed reference viewed: 16 (10 ULg)
Full Text
Peer Reviewed
See detailOnce weekly alendronate produces a greater decrease in bone resorption than daily risedronate
Hosking, D.; Adami, Silvio; Felsenberg, D. et al

in Annals of the Rheumatic Diseases (2002, June), 61(Suppl.1),

Detailed reference viewed: 19 (9 ULg)
Full Text
Peer Reviewed
See detailA PET investigation of lexicality and phonotactic frequency in oral language processing
Majerus, Steve ULg; Collette, Fabienne ULg; Van der Linden, Martial ULg et al

in Cognitive Neuropsychology (2002), 19(4), 343-360

Lexicality and phonotactic frequency effects are observed in many cognitive studies on language processing, but little is known about their underlying neural substrates, especially with regard to ... [more ▼]

Lexicality and phonotactic frequency effects are observed in many cognitive studies on language processing, but little is known about their underlying neural substrates, especially with regard to phonotactic frequency effects. Here, we conducted a positron emission tomography (PET) study in which 11 right-handed volunteers had either to repeat or to listen to lists of words, high phonotactic frequency nonwords, and low phonotactic frequency nonwords. The comparison of word versus nonword processing consistently confirmed previous findings of left temporal and prefrontal activations classically ascribed to lexicosemantic processing. Higher activation was found in the right posterior superior temporal gyrus when comparing high phonotactic frequency nonwords to words, but not when comparing low phonotactic frequency nonwords to words. We propose that this region is implicated in the formation of temporary phonological representations for high-probability phonological events, which may support processing of high phonotactic frequency nonwords [less ▲]

Detailed reference viewed: 34 (6 ULg)
Full Text
Peer Reviewed
See detailAdsorption and structure formation of the weak polyelectrolytic diblock copolymer, PVP-b-PDMAEMA
Mahltig, Boris; Gohy, Jean-François; Antoun, Sayed et al

in Colloid and Polymer Science (2002), 280(6), 495-502

This paper reports on the pH-dependent adsorption of weak the polyelectrolytic diblock copolymer poly(2-vinylpyridine)-block-poly(dimethylaminoethyl methacrylate), (PVP-b-PDMAEMA). Aqueous PVP-b-PDMAEMA ... [more ▼]

This paper reports on the pH-dependent adsorption of weak the polyelectrolytic diblock copolymer poly(2-vinylpyridine)-block-poly(dimethylaminoethyl methacrylate), (PVP-b-PDMAEMA). Aqueous PVP-b-PDMAEMA solutions have been adsorbed on alkaline pretreated silicon substrates. Altogether two copolymers differing in block ratio and molecular weight were used for the investigations. While the electrical charge of both samples in solution was investigated by electrophoretic measurements, the adsorbed polymer layers were studied with ellipsometry and atomic force microscopy (AFM). Depending on pH the electrical charge of both blocks of the diblock copolymer varied. Three different regimes have been identified. Under acidic conditions at pH < 5, both blocks are mainly positively charged. At medium pH between 5 and 8, only the PDMAEMA block is positively charged. At pH > 8, both blocks are nearly uncharged and a polymer precipitation occurred in solution. Each of these pH regimes was characterized by a specific adsorption behaviour leading to two adsorption maxima at acidic and alkaline pH values, while at medium pH a plateau in the adsorbed amount was observed. Moreover, the structures of the polyelectrolytes formed on the substrate after adsorption were specific to each of the three pH regimes. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailL'osteoradionecrose mandibulaire: epee de damocles de la radiotherapie cervico-faciale?
Piret, Pascal ULg; Deneufbourg, Jean-Marie ULg

in Revue Médicale de Liège (2002), 57(6), 393-9

RÉSUMÉ : Dotée d’une réelle efficacité, la radiothérapie des cancers cervico-faciaux peut toutefois être à l’origine de complications sévères. Heureusement peu fréquente, l’ostéoradionécrose mandibulaire ... [more ▼]

RÉSUMÉ : Dotée d’une réelle efficacité, la radiothérapie des cancers cervico-faciaux peut toutefois être à l’origine de complications sévères. Heureusement peu fréquente, l’ostéoradionécrose mandibulaire en constitue une des plus redoutables. Sa pathogénie relève d’altérations radiques au niveau de la muqueuse, de l’os et des glandes salivaires. Les facteurs de risque tiennent au patient, à la tumeur ainsi qu’aux modalités thérapeutiques. Une cascade d’événements prenant son origine dans l’hyposialie conduit à la nécrose osseuse via le développement de caries extensives et le traumatisme lié à l’extraction dentaire. Une prévention efficace existe, fondée sur une mise en ordre buccale préalablement à l’irradiation, sur des mesures hygiéno-diététiques et la pratique stricte de la fluoruration. Certains traitements médicaux peuvent stabiliser le processus. L’oxygénothérapie hyperbare exerce un effet bénéfique incontestable. Dans les cas les plus graves, une chirurgie reconstructrice par lambeau osseux libre microvascularisé constitue l’ultime recours pour restaurer tant la fonction que l’aspect cosmétique. Rapportant un cas clinique, l’importance de la bonne observance par le patient des principes de prévention est souligné. Parallèlement, l’accent est mis sur la nécessité d’une surveillance régulière exercée par le radiothérapeute afin d’éviter les conséquences gravissimes qui peuvent être celles de l’ostéoradionécrose mandibulaire. [less ▲]

Detailed reference viewed: 124 (4 ULg)
Full Text
Peer Reviewed
See detailRelation between disease phenotype and HLA-DQ genotype in diabetic patients diagnosed in early adulthood
Weets, Ilse; Siraux, Valérie; Daubresse, Jean-Claude ULg et al

in Journal of Clinical Endocrinology and Metabolism (2002), 87(6), 2597-2605

We investigated inaugural disease phenotype in relation to the presence or absence of diabetes-associated autoantibodies and human leukocyte antigen (HLA) DQ risk genotypes in adult-onset diabetic ... [more ▼]

We investigated inaugural disease phenotype in relation to the presence or absence of diabetes-associated autoantibodies and human leukocyte antigen (HLA) DQ risk genotypes in adult-onset diabetic patients. Blood samples and questionnaires were obtained from 1584 recent-onset Belgian Caucasian patients (age 15-39 yr at diagnosis of primary diabetes) who were recruited by the Belgian Diabetes Registry over an 11-yr period. At clinical diagnosis, antibody-positive patients (n = 1198) were on average younger and had more symptoms, a more acute disease onset, lower body mass index, and random C-peptide levels, but higher insulin needs, glycemia, and prevalence of ketonuria, HLA-DQ, and 5' insulin gene susceptibility genotypes (P < 0.001 vs. antibody-negative patients; n = 386). In antibody-positive patients, these characteristics did not differ according to HLA-DQ genotype. However, in antibody-negative subjects, we found that patients were younger (P = 0.001); had a lower body mass index (P < 0.001), higher insulin needs (P = 0.014), and amylasemia (P = 0.001); and tended to have a higher glycemia and lower C-peptide in the presence of susceptible HLA-DQ genotypes. Differences according to HLA-DQ genotype subsisted after careful age-matching. In conclusion, we found no relation between initial disease phenotype and HLA-DQ genotype in antibody-positive diabetic young adults. In contrast, antibody-negative patients displayed more type I-like features when carrying susceptible HLA-DQ genotypes known to promote the development of antibody-positive diabetes. The overrepresentation of these susceptibility genotypes in antibody-negative patients suggests the existence of an immune-mediated disease process with as yet unidentified immune markers in a subgroup of seronegative patients. [less ▲]

Detailed reference viewed: 123 (5 ULg)
Full Text
Peer Reviewed
See detailPoly(epsilon-caprolactone)/clay nanocomposites prepared by melt intercalation: mechanical, thermal and rheological properties
Lepoittevin, Bénédicte; Devalckenaere, Myriam; Pantoustier, Nadège et al

in Polymer (2002), 43(14), 4017-4023

(Nano)composites of poly(epsilon-caprolactone) (PCL) were prepared by melt blending the polymer with natural Na+ montmorillonite and montmorillonite modified by hydrogenated tallowalkyl (HTA)-based ... [more ▼]

(Nano)composites of poly(epsilon-caprolactone) (PCL) were prepared by melt blending the polymer with natural Na+ montmorillonite and montmorillonite modified by hydrogenated tallowalkyl (HTA)-based quaternary ammonium cations, such as dimethyl 2-ethylhexyl HTA ammonium and methyl bis(2-hydroxyethyl) HTA ammonium. Microcomposites or nanocomposites were prepared depending on whether neat or modified montmorillonites was used, as assessed by X-ray diffraction and transmission electron microscopy. Mechanical and thermal properties were studied as a function of the filter content by tensile testing, Izod impact testing, thermogravimetric analysis and differential scanning calorimetry. The rheological behaviour at 80 degreesC was also analysed in relation to the structure and content of the layered silicate. Effect of exfoliated silicates on the mechanical properties, thermal stability and flame resistance of PCL was considered. Stiffness and thermal stability improved with the filler loading until a content of 5 wt%. Further loading resulted in the levelling off and possibly in a decrease of these properties. A marked charring effect was observed upon exposure to a flame. [less ▲]

Detailed reference viewed: 31 (0 ULg)