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See detailEffet de la souplesse de la contre-pointe sur le défaut de cylindricité des pièces tournées
Debongnie, Jean-François ULg

Report (1995)

This report examines the effect of the live center flexibility on the form errors in lathe operations. It was originated from test results exhibiting a diameter having a maximum and a minimum, a fact that ... [more ▼]

This report examines the effect of the live center flexibility on the form errors in lathe operations. It was originated from test results exhibiting a diameter having a maximum and a minimum, a fact that highly surprised us. The problem is here analytically studied, and it is found that such form errors must effectively be obtained. [less ▲]

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See detailEtude des beta-lactamases de 7 souches hospitalières de Klebsiella pneumoniae
Evrard, Béatrice; MELIN, Pierrette ULg; Galleni, Moreno ULg et al

Poster (1995, October)

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See detailEtude de la sensibilité de 100 souches hospitalières d'entérobactéries productrices de beta-lactamases à spectre élargi
Evrard, Béatrice; CHRISTIAENS, Geneviève ULg; Dandrifosse, A.-C. et al

Poster (1995, October)

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See detailHigh Voltage overhead lines. Three mechanisms to avoid bundle galloping.
Lilien, Jean-Louis ULg; Chabart, Olivier

in Proceedings of the 1st ISCD 1995 (1995, October)

Galloping of power lines on bunde conductor may be subject to galloping. In this paper three mechanisms of galloping which may occor with bundle conductor lines are described and explained, which helps to ... [more ▼]

Galloping of power lines on bunde conductor may be subject to galloping. In this paper three mechanisms of galloping which may occor with bundle conductor lines are described and explained, which helps to think about prevention of these galloping. [less ▲]

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See detailThe Impact of Renal Revascularisation on Renal Dysfunction
Van Damme, Hendrik ULg; Jeusette, F.; Pans, Alain ULg et al

in European Journal of Vascular and Endovascular Surgery : The Official Journal of the European Society for Vascular Surgery (1995), 10(3), 330-7

AIM: To determine the value of kidney revascularisation in patients with impaired renal function and correctable renal artery stenosis, the authors reviewed their surgical experience from 1978 to 1990 ... [more ▼]

AIM: To determine the value of kidney revascularisation in patients with impaired renal function and correctable renal artery stenosis, the authors reviewed their surgical experience from 1978 to 1990. PATIENTS AND METHODS: The study population included 23 patients with ischaemic nephropathy whose preoperative baseline creatinine level exceeded 20 mg/l (range 21-65 mg/l). This represents 20% of all patients operated on for renal artery disease during the same time interval. Preoperative risk profile, operative mortality, impact on hypertension and on renal function, and late survival were analysed. Renal function response to kidney revascularisation was defined as favourable (20% or more reduction of serum creatinine), moderate (stabilised serum creatinine values) or bad (further deterioration of renal function). All patients had atherosclerotic renal artery disease, involving a solitary kidney in five, both kidneys in 15 and one of the two kidneys in three patients. Hypertension was present in 74%. Revascularisation was unilateral in 10, bilateral in nine and associated with controlateral nephrectomy in four patients. RESULTS: Four patients died postoperatively (three myocardial infarctions, one stroke). Four patients needed postoperative short-term dialysis. After operation, renal function improved in 13, stabilised in six and deteriorated in four patients (of whom two died). Follow-up among the survivors averaged 46 months. The mean serum creatinine value at last follow-up visit was 26.2 mg/l, a decrease of 7.7 mg/l compared to preoperative values (p < 0.05). Overall, 69% of azotemic patients submitted to renal revascularisation manifested a favourable response (45% improved and 24% stabilised). Three patients required long-term dialysis. The 5-year survival rate was 48%. CONCLUSION: These data suggest that kidney revascularisation in patients with ischaemic nephropathy can restore or stabilise renal function, preventing evolution and end-stage renal disease and dialysis dependency. [less ▲]

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See detailLa passion du philosophe
Durand, Pascal ULg

Article for general public (1995)

Compte rendu de La Passion de l'origine. Recherches sur l'esthétique transcendantale et la phénoménologie, de Daniel Giovannangeli (Paris, Galilée, 1995)

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See detailL'avenir du Petit Prince
Bodson, Arthur ULg

Speech/Talk (1995)

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See detailExtraction and partial purification of tomato leaves hydroperoxide lyase
Fauconnier, Marie-Laure ULg; Lecoq, S.; Marlier, M.

Poster (1995, September 27)

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See detailAdsorption behavior of polymers with ionic end groups : mono- and difunctional polystyrenes in toluene
Pankewitsch, T.; Vanhoorne, Pierre ULg; Jérôme, Robert ULg et al

in Macromolecules (1995), 28(20), 6986-6992

The adsorption behavior of mono- and difunctional telechelic polymers, omega- and alpha,omega-sulfonato polystyrenes, from dilute toluene solution on the surface of a silicon wafer is investigated by ... [more ▼]

The adsorption behavior of mono- and difunctional telechelic polymers, omega- and alpha,omega-sulfonato polystyrenes, from dilute toluene solution on the surface of a silicon wafer is investigated by ellipsometry. Polystyrene without ionic end groups does not adsorb, and the attachment of molecules to the silicon dioxide surface proceeds via the functional ionic ends. Already a single ionic group promotes adsorption, and adsorption kinetics at small times is found to be diffusion limited. The approach of an equilibrium adsorbed amount at later times is controlled by the hindered diffusion of chains through the already existing layer. With monofunctional chains a thin stable monolayer at the surface is formed. With difunctional chains there is strong indication for coupling of ionic ends and the formation of additional layers. It is caused by the interaction of dangling ends, when only one end of the chains is adsorbed at the surface. The molecular weight dependence of the grafting density is consistent with scaling predictions, and differences in the adsorbed amount of telechelics with different counterions are explained on the basis of different valencies. [less ▲]

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See detailEtude in situ de la dynamique de la défense du nid par le mâle territorial (agressions interspécifiques) chez Symphodus (C.) ocellatus (Forsskål, 1775), poisson labridé méditerranéen
Ylieff, Marc ULg

Master's dissertation (1995)

Approche descriptive et expérimentale des comportements que le mâle territorial nidificateur produit pour protéger son frai vis-à-vis d'autres poissons labridés et des mollusques qui peuplent son nid ... [more ▼]

Approche descriptive et expérimentale des comportements que le mâle territorial nidificateur produit pour protéger son frai vis-à-vis d'autres poissons labridés et des mollusques qui peuplent son nid. Etude réalisée en plongée sous-marine à Stareso, Calvi (Corse). [less ▲]

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See detailSmall-angle neutron scattering studies of low-polarity telechelic ionomer solutions. 1. Total scattering
Karayianni, Eleni; Jérôme, Robert ULg; Cooper, Stuart L

in Macromolecules (1995), 28(19), 6494-6507

The overall structure and thermodynamic interactions that take place,in low-polarity ionomer solutions have been investigated via the technique of small-angle neutron scattering for two Na-neutralized ... [more ▼]

The overall structure and thermodynamic interactions that take place,in low-polarity ionomer solutions have been investigated via the technique of small-angle neutron scattering for two Na-neutralized carboxy-telechelic polystyrene model ionomer systems that differ in the length of the polymer backbone. The strong interchain association that is evidenced in the viscometric measurements of the ionomers compared to the ester forms is apparent in the scattering profiles of the ionomers that show a characteristic upturn that extends in the low-q regime and increases with increasing polymer concentration. The apparent molecular weight and size of the aggregated particles show a significant increase over a small concentration range, while the ionic content seems to not affect the degree of association in the concentration regime studied. The supramolecular structure of the ionomer solutions is revealed by fitting the scattering data to a scaling law in the intermediate qR(g) regime that supports a percolation type of behavior for the ionomer clusters for both systems studied. The fractal dimension of the aggregates is 1.76 for both ionomer systems which provides evidence for a rather extended configuration and high polydispersity of the clusters in solution. The molecular weight of the associating particles is observed to rapidly approach infinity with increasing polymer concentration, indicating the approach to a gel transition. The scattering data of the ionomer solutions were fitted to the de Gennes model based on the random-phase approximation theory. The Flory-Huggins interaction parameter of the ionomer solutions determined using this model shows a strong concentration dependence with a quite unexpected increase with decreasing polymer concentration. The thermodynamic interactions in the ionomer solutions were changed dramatically by the association as revealed by a significant decrease of the second virial coefficient. [less ▲]

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See detailSurface Molecular Structure of Self-Assembled Alkanethiols Studied by Electron Spectroscopies
Duwez, Anne-Sophie ULg; Riga, J.; Ghijsen, J. et al

Conference (1995, September 10)

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See detailL'UEO et la politique européenne de défense
Dumoulin, André ULg

in Problèmes politiques et sociaux (1995), (754),

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See detailPragmatique et apprentissage. Contributions à l'étude des phénomènes de raisonnement et d'arraisonnement cognitifs en situation à caractère dialogique
Verpoorten, Dominique ULg

Master of advanced studies dissertation (1995)

Faisant de la notion de "situation" sa problématique centrale, le mémoire s'inscrit résolument dans le cadre de la pragmatique de la communication. Il intègre par ailleurs des préoccupations issues ... [more ▼]

Faisant de la notion de "situation" sa problématique centrale, le mémoire s'inscrit résolument dans le cadre de la pragmatique de la communication. Il intègre par ailleurs des préoccupations issues spécifiquement de l'approche cognitiviste lorsque celle-ci s'applique au champ de l'apprentissage. En s'appuyant sur divers auteurs, le travail se penche sur les enjeux que représente le postulat d'une démarche d'apprentissage comme concomitante à toute activité en situation. [less ▲]

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