References of "2005"
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See detailReversing the Brazil nut effect
Ludewig, François ULg; Vandewalle, Nicolas ULg

in European Physical Journal E -- Soft Matter (2005), 18(4), 367-372

We propose a lattice model for studying the Brazil Nut Effect (BNE), i.e. the phase segregation occuring when a granular material is vertically shaked. The model considers the tap intensity and the ... [more ▼]

We propose a lattice model for studying the Brazil Nut Effect (BNE), i.e. the phase segregation occuring when a granular material is vertically shaked. The model considers the tap intensity and the mobility mu of the grains as the main physical parameters. Different mobilities for different grain species lead to segregation (BNE) patterns, reverse segregation (RBNE) patterns, "sandwhich" layered structures or vertical domains. A phase diagram (decompaction chi, mobility difference between both species Delta mu) is obtained in which the different phases are emphasized. In a narrow region of the diagram, different phases coexist. It is shown that the BNE segregation could be reversed by increasing the tap intensity or the characteristics of the grains. Numerical results are compared with earlier experimental works. [less ▲]

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See detailOptimization of poly(2-(dimethylamino)ethyl methacrylate)-co-poly(ethyleneglycol)/DNA complexes designed for cell transfection
Grandfils, Christian ULg; Emonds-Alt, J.

in Minerva Biotecnologica (2005), 17(4), 237-243

Cell transfection relies upon the delivery of genomic material within cells in order to express selected DNA sequences. Non-viral gene delivery systems are preferable over viral vectors for several ... [more ▼]

Cell transfection relies upon the delivery of genomic material within cells in order to express selected DNA sequences. Non-viral gene delivery systems are preferable over viral vectors for several reasons: biosafety, low immunogenicity, higher loading capacity, and easiness of production. Their major drawbacks actually are their limited efficiency in vivo compared to viruses, their cytotoxicity and the fact that they are rapidly cleared up from the bloodstream. The aim of our study was to better characterize the physico-chemical behavior of the polycations based on poly(2-(dimethylamino)ethyl methacrylate)-co-poly(ethyleneglycol) and to control the formulation step to produce the polyelectrolyte complexes. [less ▲]

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See detailChemical profiles in lake sediments in Laguna Chica de San Pedro (Bio-Bio Region, Chile)
Chirinos, L. R.; Urrutia, R.; Fagel, Nathalie ULg et al

in Journal of the Chilean Chemical Society [=JCCS] (2005), 50(4), 697-710

Metal profiles in lake sediments could provide historical environmental information on impacts caused by human activities and natural events, with view to the formulation of effective environmental ... [more ▼]

Metal profiles in lake sediments could provide historical environmental information on impacts caused by human activities and natural events, with view to the formulation of effective environmental policies. This paper presents data on sedimentary element profiles in Laguna Chica de San Pedro (LCSP) lake, located in the Bio Bio Region in Southern Chile, where important industrial activities are concentrated. Sediment properties (organic and inorganic matter, grain size, particle distribution, biogenic silica, Mn/ Fe ratio), major (Al, Ca, K, Mg, Ti, Na), trace (V, As, Co, Cu, Zn, Ni, Cr, Pb, Sr), and mobile (Fe, Mn, P, S) elements, as well as mineral profiles (plagioclase, quartz, clays, amorphous material) are presented, up to 65 cm depth. In general, relatively constant concentration profiles are observed in the sedimentary core middle section, for most elements. Most changes in composition are seen at the top (recent industrial period) and bottom (before human intervention) sections. Variable redox conditions, generated by biological activity at the sediment-water interface are likely to account for composition profiles at the sediment-water interface. On the other hand, physical processes seem to be mostly responsible for concentration changes in Pre-industrial sediments. Mineral content profiles, such as plagioclase, clay and quartz, as well as total clay content remain fairly constant in most of the core, showing significant changes at its bottom part. High excess V, As, and S values, especially at the upper sediment, arise as a consequence of redox conditions in the lake. Certainly, such metal enrichment is mainly associated with natural sedimentary matter supply from the watershed. [less ▲]

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See detailAspects zootechniques et économiques de l’utilisation des feuilles de Vitellaria paradoxa et de tourteau de coton en supplémentation sur la production laitière de la vache Borgou en saison hivernale
Chabi Toko, Roukayath ULg

Master's dissertation (2005)

Experiment was carried out to investigate the effects of cottonseed meal (CSM) and Vitellaria paradoxa leaves in rainy season supplementation on milk yield, composition of the milk, live weight changes ... [more ▼]

Experiment was carried out to investigate the effects of cottonseed meal (CSM) and Vitellaria paradoxa leaves in rainy season supplementation on milk yield, composition of the milk, live weight changes and their economical returns. To examine these effects, fifteen (15) Borgou cattle, in late lactation were offered three (3) dietary treatments: grazing natural pasture (control); the two other treatments received in addition cottonseed meal and Vitellaria paradoxa leaves supplements. The experiment lasted ten (10) weeks, including an adaptation period of two (2) weeks. Average daily milk yield was 946,58 g, 1690,07 g and 1176,89 g for the control, cottonseed meal and Vitellaria paradoxa leaves group respectively. Dietary treatments had a significant (p< 0,05) effect on milk yield during the trial. Only cows supplemented CSM produce significantly more milk than those unsupplemented (increasing of 78,54 %). But there is no differences among supplemented group. Cottonseed meal group produce more than 43,60 % milk yield compared to the second supplemented group. The treatments had a significant effect on total solid and milk ash. But no significant effect was observed on fat and protein content. The over all mean values were 15,12 %, 0,35 %, 5,92 % and 4,13 % respectively for total solid, ash, fat and protein content. There were no significant differences (p<0,05) in live weight changes of supplemented group cows. Further more, calves live weight changes were significantly different. Supplemented groups calves live weight increase was significantly more than those unsupplemented from birth to the end of the trial (212,06 g/d and 219,10 g/d versus 161,1 g/d). From birth to the beginning of the trial, only Vitellaria paradoxa leaves group calves had a significant increase in live weight changes. Only CSM group calves had a significant increase in live weight changes (124,98 g/d versus 53,54 g/d for non supplemented group calves) during the trial. Calves live weight changes from birth to the beginning of the trial were highly significantly correlated with those from birth to the end of the trial for all the experimental herd and for CSM group (r = 0,96 and r = 0,99). In other hand, these two live weight changes were slightly correlated for the control (r = 0,96) and Vitellaria paradoxa group (r = 0,97). A net return analysis shows that cottonseed meal and Vitellaria paradoxa supplementation in rainy season was profitable even if Vitellaria paradoxa was more beneficial. [less ▲]

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See detailThe key role of nitrones in the controlled radical polymerization of vinyl monomers
Sciannamea, Valérie

Doctoral thesis (2005)

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See detailLe genre Clostridium chez les ruminants
Mainil, Jacques ULg

Scientific conference (2005, December)

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See detailHétérogénéité, mon cher souci
Lafontaine, Dominique ULg

in Revue Internationale d'Education (2005), 40

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See detailThe neural correlate of (un)awareness: lessons from the vegetative state
Laureys, Steven ULg

in Trends in Cognitive Sciences (2005), 9(12), 556-559

Consciousness has two main components: wakefulness and awareness. The vegetative state is characterized by wakefulness without awareness. Recent functional neuroimaging results have shown that some parts ... [more ▼]

Consciousness has two main components: wakefulness and awareness. The vegetative state is characterized by wakefulness without awareness. Recent functional neuroimaging results have shown that some parts of the cortex are still functioning in 'vegetative' patients. External stimulation, such as a painful stimulus, still activates 'primary' sensory cortices in these patients but these areas are functionally disconnected from 'higher order' associative areas needed for awareness. Such studies are disentangling the neural correlates of the vegetative state from the minimally conscious state, and have major clinical consequences in addition to empirical importance for the understanding of consciousness. [less ▲]

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See detailL'ancrage local des référentiels normatifs globaux : une approche en termes de réseaux.
Semal, Nathalie ULg

in VertigO : la Revue Electronique en Sciences de l'Environnement (2005), 6(3), 122-133

The ISO 14001 standard is currently the worldwide reference for Environmental Management System. For it has been produced at and for international level, how does it become embedded in local situations ... [more ▼]

The ISO 14001 standard is currently the worldwide reference for Environmental Management System. For it has been produced at and for international level, how does it become embedded in local situations and action context. This article highlights the role of expertise in this embedding process in the framework of conceptual and methodological repertory of the sociology of translation. We firstly describe activities and actors that are involved in certification. Then our analyse is focused on triple role of environmental management expertise in embeddedness process of ISO 14001 standard: translation, netting and experience capitalization. [less ▲]

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See detailSociété civile et nouvelle gouvernance au Bénin. Quelques réflexions à partir de l'analyse du nouveau secteur ONG à Cotonou
Pirotte, Gautier ULg; Poncelet, Marc ULg

in Bulletin de l'APAD (2005), (26),

Les auteurs montrent que dans le cadre de l'imporisition d'une "bonne gouvernance" en République du Bénin, les ONG locales jouent à présent un rôle central dans la constitution d'une société civile. L ... [more ▼]

Les auteurs montrent que dans le cadre de l'imporisition d'une "bonne gouvernance" en République du Bénin, les ONG locales jouent à présent un rôle central dans la constitution d'une société civile. L'espace social de la société civile implique aujourd'hui les leaders des nouvelles ONG très dépendantes des bailleurs occidentaux mais aussi les agents étatiques qui tentent de se positionner comme acteur au sein des nouveaux secteurs ONG tout en conservant leur fonction publique. Le processus d'émergence d'une société civile au Bénin ne peut se résumer ni à une privatisation de l'Etat ni à une étatisation de la société civile. [less ▲]

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See detailComparison of the Sensititre YeastOne and Fungitest methods with the NCCLS M27-A2 reference method for antifungal susceptibility testing of yeasts
Hayette, Marie-Pierre ULg; Kondarowski, E.; Melin, Pierrette ULg et al

Poster (2005, December)

Background: The recent introduction of Sensititre YeastOne, a colorimetric microdilution method that includes new antifungal agents has opened the field to MIC’s determination by an easy-to-perform method ... [more ▼]

Background: The recent introduction of Sensititre YeastOne, a colorimetric microdilution method that includes new antifungal agents has opened the field to MIC’s determination by an easy-to-perform method. The aim of this study was to compare this test with the NCCLS M27-A protocol and with Fungitest, a current routine method for yeasts susceptibility testing. Methods: Sensititre YeastOne method (Trek diagnostic), and the NCCLS M27-A2 were performed on 300 yeasts clinical isolates distributed as follow: 125 C. albicans, 273 non-albicans species. Four antifungal agents were tested by the reference method: amphotericine B (AmB), fluconazole (FZ), itraconazole (ITZ), and voriconazole (VOR). The reading of the Sensititre and NCCLS results was visually performed after 24 and 48 h respectively. The Fungitest (Biorad) method was applied on 121 among the 300 isolates and the reading was made after 24 to 48 h incubation time according to the positive control growth. Results: By the NCCLS method, the MICs50/MICs90 (µg/ml) were as follows: 1/2 (AmB); 16/64 (FZ); 0.25/4 (ITZ) and 0.125/2 (VOR). Sensititre vs. NCCLS: The overall agreement within 2 dilutions for AmB, FZ, ITZ and VOR was respectively 54, 82, 80 and 78%. The MICs50/MICs90 were in absolute concordance for VOR by both techniques. Very major errors (%) were recorded as follows: 0.01/0 (AmB with a MIC ≥ 4/8µg/ml for resistant strains respectively), 1.6 (FZ), 3.6 (ITZ) and 2.3 (VOR with a MIC ≥ 8µg/ml for resistant strains). Fungitest vs. NCCLS: The agreement between both methods including minor discrepancies was 98% (AmB), 88% (FZ) and 98% (ITZ). Following the breakpoints given by the manufacturer, very major errors were 6.3% for FZ, 0.03% for ITZ and none for AmB. Conclusions: Sensititre is a convenient alternative to the NCCLS method for yeast susceptibility testing. Fungitest in spite of good correlations must change the breakpoints and include new antifungal agents to be competitive. [less ▲]

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See detailStress et non qualité
Nyssen, Anne-Sophie ULg

Conference (2005, December)

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See detailIsocinétisme et LCA : quelle position du contre-appui résistif ?
Croisier, Jean-Louis ULg; Maquet, Didier ULg; Huskin, Jean-Pierre ULg et al

in Abstract book de la 5ème Journée Belge d’Isocinétisme (2005, December)

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See detailExploration isocinétique et électromyographique des fléchisseurs et extenseurs de genou : application à des populations souffrant de douleurs chroniques
Maquet, Didier ULg; Demoulin, Christophe ULg; Forthomme, Bénédicte ULg et al

in Abstract book de la 5ème Journée Belge d’Isocinétisme, Campus Erasme (2005, December)

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See detailEntraînement isocinétique des rotateurs d’épaule et performances de terrain
Forthomme, Bénédicte ULg; Chague, Lucie ULg; Maquet, Didier ULg et al

in Abstract book de la 5ème Journée Belge d’Isocinétisme (2005, December)

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See detailEffects of BM-573, a thromboxane A(2) modulator on systemic hemodynamics perturbations induced by U-46619 in the pig
Tchana-Sato, Vincent ULg; Dogné, Jean-Michel ULg; Lambermont, Bernard ULg et al

in Prostaglandins & Other Lipid Mediators (2005), 78(1-4), 82-95

The aim of our study was to evaluate the effects of thromboxane A(2) (TXA(2)) agonist, U-46619, on systemic circulatory parameters in the pigs before and after administration of a novel TXA(2) receptor ... [more ▼]

The aim of our study was to evaluate the effects of thromboxane A(2) (TXA(2)) agonist, U-46619, on systemic circulatory parameters in the pigs before and after administration of a novel TXA(2) receptor antagonist and synthase inhibitor (BM-573). Twelve anesthetized pigs were randomly assigned in two groups: in Ago group (n=6), the animals received six consecutive injections of U-46619 at 30 min interval, while in Anta group (n = 6) they received an increasing dosage regimen of BM-573 10 min before each U-46619 injection. The effects of each dose of BM-573 on ex vivo platelet aggregation induced by arachidonic acid, collagen or ADP were also evaluated. Vascular properties such as characteristic impedance, peripheral resistance, compliance, arterial elastance were estimated using a windkessel model. Intravenous injections of 0.500 mg/ml of BM-573 and higher doses resulted in a complete inhibition of platelet aggregation induced by arachidonic acid. In the same conditions, BM-573 completely blocked the increase of arterial elastance, and stabilized both mean aortic blood pressure and mean systemic blood flow. In conclusion, BM-573 could therefore be a promising therapeutic approach in pathophysiological states where TXA(2) plays it main role in the increase of vascular resistance like in pathologies such as systemic hypertension. (c) 2005 Published by Elsevier Inc. [less ▲]

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See detailEULAR report on the use of ultrasonography in painful knee osteoarthritis. Part 1: Prevalence of inflammation in osteoarthritis
D'Agostino, M. A.; Conaghan, P.; Le Bars, M. et al

in Annals of the Rheumatic Diseases (2005), 64(12), 1703-1709

Objectives: To assess the prevalence of inflammation in subjects with chronic painful knee osteoarthritis (OA), as determined by the presence of synovitis or joint effusion at ultrasonography (US); and to ... [more ▼]

Objectives: To assess the prevalence of inflammation in subjects with chronic painful knee osteoarthritis (OA), as determined by the presence of synovitis or joint effusion at ultrasonography (US); and to evaluate the correlation between synovitis, effusion, and clinical parameters. Methods: A cross sectional, multicentre, European study was conducted under the umbrella of EULAR-ESCISIT. Subjects had primary chronic knee OA (ACR criteria) with pain during physical activity >= 30 mm for at least 48 hours. Clinical parameters were collected by a rheumatologist and an US examination of the painful knee was performed by a radiologist or rheumatologist within 72 hours of the clinical examination. Ultrasonographic synovitis was defined as synovial thickness >= 4 mm and diffuse or nodular appearance, and a joint effusion was defined as effusion depth >= 4 mm. Results: 600 patients with painful knee OA were analysed. At US 16 (2.7%) had synovitis alone, 85 (14.2%) had both synovitis and effusion, 177 (29.5%) had joint effusion alone, and 322 (53.7%) had no inflammation according to the definitions employed. Multivariate analysis showed that inflammation seen by US correlated statistically with advanced radiographic disease (Kellgren-Lawrence grade >= 3; odds ratio (OR) = 2.20 and 1.91 for synovitis and joint effusion, respectively), and with clinical signs and symptoms suggestive of an inflammatory "flare'', such as joint effusion on clinical examination (OR = 1.97 and 2.70 for synovitis and joint effusion, respectively) or sudden aggravation of knee pain (OR = 1.77 for joint effusion). Conclusion: US can detect synovial inflammation and effusion in painful knee OA, which correlate significantly with knee synovitis, effusion, and clinical parameters suggestive of an inflammatory "flare''. [less ▲]

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See detailHypertension intra-crânienne et hydrocéphalie
Martin, Didier ULg

Scientific conference (2005, December)

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