Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailOn Comparison Meaningfulness of Aggregation Functions
Marichal, Jean-Luc; Mathonet, Pierre ULg

in Journal of Mathematical Psychology (2001), 45(2), 213-223

This paper will give a description of all continuous functions which are comparison meaningful in the sense of measurement theory.

Detailed reference viewed: 6 (1 ULg)
Full Text
Peer Reviewed
See detailImpact assessment of breeding European kingfisher (Alcedo atthis) on prey fish
Hallet, Catherine; Libois, Roland ULg

in Cowx, Ian (Ed.) Interaction between fish and birds: implications for management (abstracts) (2001, April)

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailInfluence of Plasminogen Activator Inhibitor Type 1 on Choroidal Neovascularization
Lambert, Vincent ULg; Munaut, Carine ULg; Frankenne, F. et al

in FASEB Journal (2001), 15(6), 1021-7

High levels of the plasminogen activators, but also their inhibitor, plasminogen activator inhibitor 1 (PAI-1), have been documented in neovascularization of severe ocular pathologies such as diabetic ... [more ▼]

High levels of the plasminogen activators, but also their inhibitor, plasminogen activator inhibitor 1 (PAI-1), have been documented in neovascularization of severe ocular pathologies such as diabetic retinopathy or age-related macular degeneration (AMD). AMD is the primary cause of irreversible photoreceptors loss, and current therapies are limited. PAI-1 has recently been shown to be essential for tumoral angiogenesis. We report here that deficient PAI-1 expression in mice prevented the development of subretinal choroidal angiogenesis induced by laser photocoagulation. When systemic and local PAI-1 expression was achieved by intravenous injection of a replication-defective adenoviral vector expressing human PAI-1 cDNA, the wild-type pattern of choroidal angiogenesis was restored. These observations demonstrate the proangiogenic activity of PAI-1 not only in tumoral models, but also in choroidal experimental neovascularization sharing similarities with human AMD. They identify therefore PAI-1 as a potential target for therapeutic ocular anti-angiogenic strategies. [less ▲]

Detailed reference viewed: 33 (4 ULg)
Full Text
Peer Reviewed
See detailIncrease of the Photosensitizing Efficiency of the Bacteriochlorin a by Liposome-Incorporation
Damoiseau, X.; Schuitmaker, H. J.; Lagerberg, J. W. et al

in Journal of Photochemistry and Photobiology B : Biology (2001), 60(1), 50-60

To describe the action mechanisms of Bacteriochlorin a (BCA), a second generation photosensitizer, in phosphate buffer (PB) and in dimyristoyl phosphatidylcholine (DMPC) liposomes we carried out oxygen ... [more ▼]

To describe the action mechanisms of Bacteriochlorin a (BCA), a second generation photosensitizer, in phosphate buffer (PB) and in dimyristoyl phosphatidylcholine (DMPC) liposomes we carried out oxygen consumption and ESR measurements. In PB, where BCA was in a monomer-dimer equilibrium, our results suggested that the oxygen consumption was related to the BCA monomers concentration in solution. Incorporation of BCA in DMPC liposomes, by promoting the monomerization of BCA, increased 9-fold the oxygen consumption in comparison to the value in PB. The use of specific singlet oxygen quenchers (Azide and 9,10-Anthracenedipropionic acid) in ESR and oxygen consumption experiments allowed us to assert that BCA was mainly a type II sensitizer when it was incorporated in DMPC. Finally, the cell survival of WiDr cells after a PDT treatment was measured for cells incubated with BCA in cell culture medium and cells incubated with BCA in DMPC. Irrespective of the dye concentration, the cell survival was lower when liposomes were used. This effect could be the result of a better BCA monomerization and/or a different BCA uptake in cells. [less ▲]

Detailed reference viewed: 16 (9 ULg)
Full Text
Peer Reviewed
See detailCharacterization of two genes encoding the mitochondrial alternative oxidase in Chlamydomonas reinhardtii
Dinant, Monique; Baurain, Denis ULg; Coosemans, Nadine ULg et al

in Current Genetics (2001), 39(2), 101-108

Two cDNA clones (AOX1 and AOX2) and the corresponding genes encoding the alternative oxidases (AOXs) from Chlamydomonas reinhardtii were isolated and sequenced. The cDNAs, AOX1 and AOX2, contained open ... [more ▼]

Two cDNA clones (AOX1 and AOX2) and the corresponding genes encoding the alternative oxidases (AOXs) from Chlamydomonas reinhardtii were isolated and sequenced. The cDNAs, AOX1 and AOX2, contained open reading frames (ORFs) encoding putative proteins of 360 amino acids and 347 amino acids, respectively. For each of the ORFs, a potential mitochondrial-targeting sequence was found in the 5'-end regions. In comparison to AOX enzymes from plants and fungi, the predicted amino acid sequences of the ORFs showed their highest degree of identity with proteins from Aspergillus niger (38.1% and 37.2%) and Ajellomyces capsulatus (37% and 34.9%). Several residues supposed either to be Fe ligands or to be involved in the ubiquinol-binding site were fully conserved in both C. reinhardtii putative AOX proteins. In contrast, a cysteine residue conserved in the sequences of all higher plants and probably involved in the regulation of the enzyme activity was missing both from the AOX1 and AOX2 amino acid sequences and from protein sequences from various other microorganisms. The transcriptional expression of the AOX1 and AOX2 genes in wild-type cells and in mutant cells deficient in mitochondrial complex III activity was also investigated. [less ▲]

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailMorphology and mechanical properties of poly(methylmethacrylate)-b-poly(alkylacrylate)-b-poly(methylmethacrylate)
Tong, J. D.; Leclère, Philippe; Doneux, C. et al

in Polymer (2001), 42(8), 3503-3514

A series of well-defined poly(methylmethacrylate) (PMMA)-b-poly(alkylacrylate)-b-PMMA triblock copolymers (MAM) has been synthesized by transalcoholysis of PMMA-b-poly(tert-butylacrylate)-b-PMMA ... [more ▼]

A series of well-defined poly(methylmethacrylate) (PMMA)-b-poly(alkylacrylate)-b-PMMA triblock copolymers (MAM) has been synthesized by transalcoholysis of PMMA-b-poly(tert-butylacrylate)-b-PMMA precursors by alkyl alcohols. The molecular weight (MW) of the outer PMMA blocks is in the 10,000-50,000 range, compared to 50,000-200,000 for the inner poly(alkylacrylate) block. Phase separation, as studied in direct space by atomic force microscopy, is observed for all the investigated triblock copolymers, except for the PMMA-b-poly(ethylacrylate)-b-PMMA and the PMMA-b-poly(n-propylacrylate)-b-PMMA triblocks of 10,000-50,000-10,000 MW. The ultimate tensile strength measured for the MAM triblocks is strongly dependent on the MW between chain entanglements for the central block. The tensile behavior is however affected by the partial miscibility of the outer and inner blocks when the PMMA MW is low. When this situation prevails, it makes the melt processing possible at temperatures lower than 200°C. [less ▲]

Detailed reference viewed: 24 (0 ULg)
Full Text
Peer Reviewed
See detailFace milling and turning simulation with the finite element method
Masset, Luc ULg; Debongnie, Jean-François ULg; Beckers, Pierre ULg

in Habraken, Anne (Ed.) Proceedings of the 4th International ESAFORM Conference on Material Forming (2001, April)

The paper describes a new simulation tool that gives the machined surface error in face milling and turning. The form error component due to the workpiece flexibility is computed using Samcef finite ... [more ▼]

The paper describes a new simulation tool that gives the machined surface error in face milling and turning. The form error component due to the workpiece flexibility is computed using Samcef finite element code. The finite element analyses are very efficient on industrial applications thanks to the superelement method. Results are obtained in a short time which makes possible a wide range of simulations such as finding the best tool trajectory, testing several tools and cutting conditions and choosing the most suited fixture design. [less ▲]

Detailed reference viewed: 125 (5 ULg)
Full Text
See detailAcquisition et traitement de l'image
Van Droogenbroeck, Marc ULg

Learning material (2001)

Detailed reference viewed: 179 (18 ULg)
Full Text
See detailTendances actuelles en matière de contrôle de gestion : de l'entreprise orientée "produit" à l'entreprise orientée "client"
Van Caillie, Didier ULg

Scientific conference (2001, March 12)

This seminar depicts current trends in the research on management control and explains why there is a clear evolution from a product-oriented perspective towards a client-focused perspective.

Detailed reference viewed: 82 (0 ULg)
Full Text
See detailAgriculture et environnement: nitrates, permis d'environnement, écobilan, ...
Debouche, Charles ULg

Scientific conference (2001, March 06)

Detailed reference viewed: 9 (0 ULg)
Full Text
See detailAbstract numeration systems on a regular languages and recognizability
Rigo, Michel ULg

Doctoral thesis (2001)

Detailed reference viewed: 29 (3 ULg)
Full Text
Peer Reviewed
See detailLa portée spatiale du permis de lotir et sa compatibilité avec les plans d'aménagement
Delnoy, Michel ULg

in Cahiers de l'Urbanisme (Les) (2001), n° spécial

Detailed reference viewed: 25 (3 ULg)
Full Text
Peer Reviewed
See detailComment j'explore certains cas difficiles de meningite tuberculeuse
Lemaire, Roger ULg; al Azba, S.; Brumioul, Danielle ULg et al

in Revue Médicale de Liège (2001), 56(3), 181-185

To formally document the presence of the bacillus of Koch in meninges still remains difficult and depends on many variables. We report two cases where the diagnosis proved difficult. The presentation of ... [more ▼]

To formally document the presence of the bacillus of Koch in meninges still remains difficult and depends on many variables. We report two cases where the diagnosis proved difficult. The presentation of tuberculous meningitis can take several aspects. Mantoux reaction is frequently negative. The BK cultures, which demonstrate the diagnosis, depend on the volume of CSF and on the importance of BK dissemination. It, unfortunately, remains difficult to make the diagnosis of tuberculous meningitis even though this pathology can have extremely deleterious consequences. [less ▲]

Detailed reference viewed: 62 (3 ULg)
Full Text
Peer Reviewed
See detailLes pénétrations percutanées de fluides projetés sous pression
Beaujean, M.; Thiry, A.; RADERMECKER, Régis ULg

in Journal des Maladies Vasculaires (2001, March), 26(Suppl 1), 153

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailPharma clinics. Comment je traite.... L'arthrose. 2eme partie: Nouvelles perspectives therapeutiques
Reginster, Jean-Yves ULg; Henrotin, Yves ULg

in Revue Médicale de Liège (2001), 56(3), 135-9

Besides the management of symptoms of osteoarthritis, a lot of interest was raised for molecules aiming at slowing down the structural progression of the disease. This paper summarizes the currently ... [more ▼]

Besides the management of symptoms of osteoarthritis, a lot of interest was raised for molecules aiming at slowing down the structural progression of the disease. This paper summarizes the currently available data allowing to discuss the efficacy and tolerance of these chemical entities. [less ▲]

Detailed reference viewed: 49 (3 ULg)
Full Text
See detailFaut-il faire payer nos journaux d'entreprise ?
Durand, Pascal ULg; Jennes, Catherine

Article for general public (2001)

Detailed reference viewed: 9 (1 ULg)
Full Text
See detailProgres recents dans la pharmacologie des hypnotiques et anxiolytiques
Scuvée-Moreau, Jacqueline ULg; Seutin, Vincent ULg

in Revue Médicale de Liège (2001), 56(3), 159-64

Recent studies on the respective contribution of GABAA receptor subunits in the various pharmacological effects of benzodiazepines suggest that the sedative and amnesic properties of diazepam are mediated ... [more ▼]

Recent studies on the respective contribution of GABAA receptor subunits in the various pharmacological effects of benzodiazepines suggest that the sedative and amnesic properties of diazepam are mediated by enhancement of gabaergic transmission in neurons expressing the alpha 1 subunit while the anxiolytic effect is selectively mediated by alpha 2 subunit. These findings suggest that a separation of the pharmacological properties of benzodiazepines is possible and that drugs with increased clinical specificity could be developed. [less ▲]

Detailed reference viewed: 36 (3 ULg)