References of "2004"
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See detailAc response of Pb thin films with a periodic pinning potential
Silhanek, Alejandro ULg; Raedts, S.; Moshchalkov, V. V.

in Physica C: Superconductivity (2004), 404(1-4), 345-349

We have studied the dynamic response of Pb thin films with a square array of antidots by means of ac susceptibility chi(T, H) measurements. For low amplitudes h of the ac excitation, the field dependence ... [more ▼]

We have studied the dynamic response of Pb thin films with a square array of antidots by means of ac susceptibility chi(T, H) measurements. For low amplitudes h of the ac excitation, the field dependence of the ac susceptibility exhibits a series of distinctive features associated with the presence of different dynamic regimes. For fields below a certain characteristic field H-s, vortices strongly pinned by the antidots perform an oscillatory movement inside the pinning potential induced by the external ac drive. For fields between H-s and H-p, interstitial vortices, performing an intra-valley motion in the weak potential wells produced by the repulsive interaction of their pinned neighbors, dominate the ac response. For H-p < H < H-t, the interstitial vortices are driven out of their pinning sites while vortices in the antidots remain trapped. For higher fields all vortices are set in motion and a critical state develops. We show that the characteristic h-independent field H-s allows one to clearly identify the maximum number of flux quanta per hole. Unlike H-s, the fields H-p and H-t, signaling the onset of motion of interstitial vortices and vortices trapped by the antidots, respectively, strongly depend on h. (C) 2004 Elsevier B.V. All rights reserved. [less ▲]

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See detailNeuropsychologie des fonctions exécutives
Meulemans, Thierry ULg; Collette, Fabienne ULg; Van der Linden, Martial ULg

Book published by Solal (2004)

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See detailPotential neuroprotective properties of atracurium and cisatracurium in neurosurgical anaesthesia
Hans, Pol ULg; Bonhomme, Vincent ULg

in European Journal of Anaesthesiology (2004), 21(4), 334-335

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See detailOnce-monthly oral ibandronate a new bisphosphonate dosing concept
Reginster, Jean-Yves ULg; Miller, P.; Delmas, P. et al

in Calcified Tissue International (2004), 74(S1), 85

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See detailAnalyse typologique et dendrochronologique de la charpente
Eeckhout, Jérôme ULg; Houbrechts, David ULg; Nuytten, Dieter

in L'église Notre-Dame du Sablon (2004)

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See detailAnisotropic elasto-plastic finite element analysis using a stress-strain interpolation method based on a polycrystalline model
Habraken, Anne ULg; Duchene, Laurent ULg

in International Journal of Plasticity (2004), 20(Issue 8-9), 1525-1560

This paper describes a stress–strain interpolation method to model the macroscopic anisotropic elasto-plastic behavior of polycrystalline materials. Accurate analytical descriptions of yield loci derived ... [more ▼]

This paper describes a stress–strain interpolation method to model the macroscopic anisotropic elasto-plastic behavior of polycrystalline materials. Accurate analytical descriptions of yield loci derived from crystallographic texture [Int. J. Plasticity 19 (2003) 647; J. Phys. IV France 105 (2003) 39] are an interesting alternative to finite element models, where the macroscopic stress is provided by an averaging of microscopic stresses computed on a set of representative crystallites [Acta Metal 22 (1985) 923; Int. J. Plasticity 5 (1989) 67]. The parameters of the analytical functions modeling the yield locus are identified by comparison with a high number of stress tensors computed, for instance, by the well-known Taylor model [J. Inst. Metal 62 (1938) 307]. This identification method depends on the crystallographic texture and should be applied each time that the plastic strain has induced a significant texture evolution. The stress–strain interpolation method accurately describes the anisotropic material behavior in a narrow stress direction defined by only five stress points. The cost of texture updating is then greatly reduced compared to a full analytical function of the yield locus. After the mathematical description of the stress–strain interpolation method, its validity is demonstrated on two non-radial strain paths. The simulations of a deep drawing experiment allow comparing model predictions and measurements. Accuracy and CPU time of the interpolation stress–strain method are judged against two other models, respectively based on a complete analytical yield locus and on the averaging of crystallite stresses. [less ▲]

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See detailApplication of the fast multipole method to hybrid finite element-boundary element models
V Sabariego, Ruth ULg; Gyselinck, Johan; Geuzaine, Christophe ULg et al

in Journal of Computational & Applied Mathematics (2004), 168(1-2), 403-412

This paper focuses on the acceleration of the hybrid finite element-boundary element analysis of 2D eddy current problems by means of the fast multipole method. An adaptive truncation scheme for the ... [more ▼]

This paper focuses on the acceleration of the hybrid finite element-boundary element analysis of 2D eddy current problems by means of the fast multipole method. An adaptive truncation scheme for the expansion of the 2D Laplace Green function is proposed. A linear time harmonic test case is considered. The results obtained with the hybrid model, with and without fast multipole acceleration, agree well with those obtained with a finite element model. The computational cost of the three calculations is compared and discussed. The proposed adaptive truncation scheme significantly contributes to the computation time savings achieved with the fast multipole method, particularly when dealing with moderate sized problems. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailMonitoring System For The Biocontrol Agent Pichia Anomala Strain K Using Quantitative Competitive Pcr-Elosa
Pujol, M.; De Clercq, D.; Cognet, S. et al

in Plant Pathology (2004), 53(1), 103-109

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See detailL'assurance contre la perte de revenus en Région wallonne
Paris, Catherine ULg

in Lecocq, Pascale (Ed.) Actualité législative en droit immobilier (2004)

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See detailAnalysis of experimental conditions for simultaneous measurements of transport and magnetotransport coefficients of high temperature superconductors
Mucha, J.; Dorbolo, Stéphane ULg; Bougrine, Hassan ULg et al

in Cryogenics (2004), 44(3), 145-149

Experimental conditions for simultaneous measurements of transport coefficients of high temperature superconductors in zero and non-zero magnetic fields are analysed. Test measurements of the thermal ... [more ▼]

Experimental conditions for simultaneous measurements of transport coefficients of high temperature superconductors in zero and non-zero magnetic fields are analysed. Test measurements of the thermal conductivity, the thermoelectric power and the Nernst-Ettingshausen effect of a textured Bi2212 sample are reported in an external magnetic field of 2 T. Errors related to parameters of the thermocouple used and to the spurious heat flows are discussed for a new experimental set-up built based on a closed cycle helium refrigerator. Possible optimising of experimental conditions is suggested. (C) 2003 Elsevier Ltd. All rights reserved. [less ▲]

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See detailGypsum and bassanite in the bat guano deposit from the « dry » Cioclovina cave (Sureanu Mountains, Romania)
Dumitras, Delia; Hatert, Frédéric ULg; Bilai, E. et al

in Romanian Journal of Mineral Deposits (2004), 81

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See detailComment je traite.... la colonisation bactérienne critique d'un ulcère de jambe. Le Yin et le Yang des pansements argentiques.
Pierard, Claudine ULg; Quatresooz, Pascale ULg; Paquet, Philippe ULg et al

in Revue Médicale de Liège (2004), 59(6), 403-6

The critical bacterial colonizaion of leg ulcers can impair their healing rate, aggravate the patient discomfort and increase the medical and nursing costs. In recent times, the dressings designed for leg ... [more ▼]

The critical bacterial colonizaion of leg ulcers can impair their healing rate, aggravate the patient discomfort and increase the medical and nursing costs. In recent times, the dressings designed for leg ulcers have followed a pace of conceptual revolution. Some of them are now offered containing an antiseptic of the silver salt family. The silver concentraton delivered into the wound bed is important to consider when assessing treatment efficacy. The diversity of the silver-based dressings currently on the European market is as large as their differences in activity. Only a minority of these dressings adequately control the wound biocenosis. Their cost which is high for the patient, must be compared to that of nursing care that may become less important. The expected beneficit is a reduction in healing time. [less ▲]

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See detailInfluence of morphological characteristics of heterogeneous moraine formations on their mechanical behaviour using image and statistical analysis
Lebourg, Thomas; Riss, Joelle; Pirard, Eric ULg

in Engineering Geology (2004), 73(1-2), 37-50

The study of landslide stability on mountain slopes becomes more difficult when the sliding materials. are heterogeneous. This is a current problem with the old glacial moraines now under study in the ... [more ▼]

The study of landslide stability on mountain slopes becomes more difficult when the sliding materials. are heterogeneous. This is a current problem with the old glacial moraines now under study in the Aspe Valley, Pyrenees. Analysis of slope stability numerical models necessitates accurate data about mechanical and physical properties. Because moraines are very heterogeneous, a large sample is necessary, but, unfortunately, data acquisition costs a lot of time and money. Therefore, we would like to estimate mechanical properties from correlated variables that are easier to acquire (morphological variables using image analysis). Observations in the field and previous mechanical results in the laboratory have shown that differences between the behaviour of moraines seem to be related not only to their three-dimensional structure but also to the morphological and petrographical characteristics of their components. The moraines are classified based on textural characteristics at the sample scales based on the distributions of size and shape of their constitutive elements (blocks, matrix, etc.). Then, we study the statistical distribution of the variables to highlight the most significant variables. Next, we evaluate the results of the mechanical behaviour of the moraines, with the internal angle of friction and the effective cohesion. On seven specific moraines, we established relations between the effective internal angle of friction, the elongation factor and the roughness factor. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailDiagnostic of the dayside ionosphere of Mars using the Total Electron Content measurement by the NEIGE/Netlander experiment
Morel, Laurent; Witasse, Olivier; Warnant, René ULg et al

in Planetary and Space Science (2004), 52

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See detailTissue distribution and metabolism of D-p-[18F]MPPF in rats.
Defraiteur, C.; Muroni, S.; Lemaire, Christian ULg et al

in Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine (2004), 45(S2), 444

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See detailIl existe une corrélation entre le score "anxiété" du test de l'"Irritabilité-Dépression-Anxiété" (IDA) et la FTC chez 9 patients successifs consultant au "Centre interdisciplinaire de l'andropause"
Henrard, Noémie ULg; Mortiniera, N.; Mormont, Christian ULg et al

in Annales d'Endocrinologie (2004), 65(4), 335

Free testosterone correlates with anxiety but not depression and irritability

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See detailLanreotide Autogel for acromegaly: a new addition to the treatment armamentarium.
Ciccarelli, Antonio; Daly, Adrian ULg; Beckers, Albert ULg

in Treatments in Endocrinology (2004), 3(2), 77-81

Since their introduction into clinical practice, somatostatin analogs have been the pharmacological therapy of choice for the treatment of acromegaly. The first preparations of somatostatin analogs ... [more ▼]

Since their introduction into clinical practice, somatostatin analogs have been the pharmacological therapy of choice for the treatment of acromegaly. The first preparations of somatostatin analogs available for clinical use were administered subcutaneously two or three times daily, which was not optimal with respect to patient compliance. The introduction of long-acting formulations of somatostatin analogs has overcome this inconvenience. Lanreotide Autogel, a new viscous, supersaturated, aqueous solution of lanreotide, is available in a prefilled syringe and administered by deep subcutaneous injection every 28 days. Lanreotide Autogel has different pharmacokinetic properties from the earlier lanreotide slow-release (SR) formulation, which may account for its better tolerability. Furthermore, lanreotide Autogel is at least as efficacious as the other somatostatin analogs in lowering growth hormone (GH) and insulin-like growth factor-1 (IGF-1) levels in the majority and in restoring safe GH and age-normalized IGF-1 levels in about 50-60% of patients with acromegaly. In conclusion, lanreotide Autogel is a valuable new addition to the acromegaly treatment armamentarium. Patients receiving intramuscular lanreotide SR injections every 7-14 days can be switched to an appropriate dose of deep subcutaneous lanreotide Autogel every 28 days, without any impact on safety or loss of efficacy. [less ▲]

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See detailCombined implicit/explicit algorithms for crashworthiness analysis
Noels, Ludovic ULg; Stainier, Laurent ULg; Ponthot, Jean-Philippe ULg

in International Journal of Impact Engineering (2004), 30(8-9, SEP-OCT), 1161-1177

In order to simulate an industrial process, an explicit method, which is conditionally stable, is the most adapted while the non-linearities evolve rapidly (impact phase, stamping process, etc.). But when ... [more ▼]

In order to simulate an industrial process, an explicit method, which is conditionally stable, is the most adapted while the non-linearities evolve rapidly (impact phase, stamping process, etc.). But when the dynamics becomes quasi-linear (post-impact analysis, springback simulation, etc.), an implicit method, which is iterative, presents the advantage of unconditional stability. The optimal solution is then to have both implicit and explicit methods readily available in the same code and to be able to switch automatically from one to the other. Criteria that decide to switch from one method to another, depending on the current dynamics, have been developed. Implicit restarting conditions are also proposed that annihilate numerical oscillations resulting from an explicit calculation. (C) 2004 Elsevier Ltd. All rights reserved. [less ▲]

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See detailOn the collapse behaviour of oil reservoir chalk
De Gennaro, Vincenzo; Delage, Pierre; Priol, Grégoire et al

in Geotechnique (2004), 54(6), 415-420

Oil exploitation in North Sea Ekofisk oilfield started in 1971, the reservoir is located in a 150 m thick layer of porous chalk (n = 40-50%) at a 3000 m depth. Enhanced oil recovery procedure by sea water ... [more ▼]

Oil exploitation in North Sea Ekofisk oilfield started in 1971, the reservoir is located in a 150 m thick layer of porous chalk (n = 40-50%) at a 3000 m depth. Enhanced oil recovery procedure by sea water injection (waterflooding) was initiated in 1987. Starting from this date, seabed subsidence due to chalk compaction evolves at a fairly constant rate (i.e. 40 cm/year). Nowadays, the decrease of the seafloor level is of about 10 m. Reservoir management and production strategies are at the origin of the growing interest of petroleum industry in disposing of a comprehensive description of the chalk mechanical behaviour. In this note the subsidence due to waterflooding is interpreted within a framework taken from the mechanics of unsaturated soils. By considering oil as the non-wetting fluid and water as the wetting fluid, chalk compaction is depicted as a collapse phenomenon due to oil-water suction decrease. A series of suction controlled tests in the osmotic oedometer cell are presented. Water weakening effects and chalk compaction (collapse) seem likely to occur through the lost of strength of the inter-granular links existing in the oil saturated sample. The nature of these links includes both capillary and physico-chemical fluids-chalk interactions, and is well characterised by the oil-water suction. [less ▲]

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