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See detailA fully coupled elasto-plastic damage model applied to anisotropic materials
Wauters, M.; Habraken, Anne ULg; Duchene, Laurent ULg

(2000)

In this paper, an elastoplastic energy-based anisotropic damage model for ductile fracture is described. A calibration method is presented. The potential applicability of this model is illustrated by a ... [more ▼]

In this paper, an elastoplastic energy-based anisotropic damage model for ductile fracture is described. A calibration method is presented. The potential applicability of this model is illustrated by a numerical example of deep drawing process realised on two steels. [less ▲]

Detailed reference viewed: 41 (10 ULg)
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See detailA fully coupled elastoplastic damage modeling and fracture criteria in metalforming processes
Zhu, Y. Y.; Cescotto, Serge ULg; Habraken, Anne ULg

in Journal of Materials Processing Technology (1992), 32

Detailed reference viewed: 30 (3 ULg)
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See detailA fully coupled elastoplastic damage theory based on the energy equivalence
Zhu, Y. Y.; Cescotto, Serge ULg; Habraken, Anne ULg

in Owen, D. R. J.; Onate, E.; Hinton, E. (Eds.) Computational Plasticity, Fundamentals and Applications (1992)

Detailed reference viewed: 24 (2 ULg)
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See detailFully coupled simulation of mechatronic and flexible multibody systems: An extended finite element approach
Bruls, Olivier ULg

Scientific conference (2009, November)

In this talk, I will discuss some extensions and refinements of classical finite element tools for the numerical simulation of complex mechatronic systems. The presentation will be divided into three main ... [more ▼]

In this talk, I will discuss some extensions and refinements of classical finite element tools for the numerical simulation of complex mechatronic systems. The presentation will be divided into three main parts. In the first part, I will show how this approach allows the modeling of dynamic systems with large amplitude motions composed of rigid bodies, flexible bodies, kinematic joints, actuators, sensors and control units. A fully coupled model of a semi-active suspension will be used to illustrate the methodology. The second part will focus on some numerical aspects concerning the time integration of the equations of motion which have the structure of strongly coupled differential-algebraic equations on a Lie group. The treatment of large rotation variables and of the coupling between control state variables and mechanical generalized coordinates will be discussed in more detail. In the third part, the simulation tool will be exploited for the topology optimization of structural components embedded in multibody systems. Generally, topology optimization techniques use simplified quasi-static load cases to mimic the complex dynamic loadings in service. In contrast, I will present an optimization procedure which properly accounts for the actual dynamic interactions which occur during the motion of the flexible multibody system. In order to illustrate the benefits of this integrated design approach, the optimization of a two degrees-of-freedom robot arm with flexible truss linkages will be analyzed. [less ▲]

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See detailA fully coupled thermo-mechanical model for unsaturated soil
François, Bertrand ULg; Laloui, Lyesse

in 2nd International Conference on Porous Media and its Applications in Science, Engineering and Industry (2007)

This paper addresses a new, unified thermomechanical constitutive model for unsaturated soils through a coupled study. In the context of elastoplasticity and the critical state theory, the model uses the ... [more ▼]

This paper addresses a new, unified thermomechanical constitutive model for unsaturated soils through a coupled study. In the context of elastoplasticity and the critical state theory, the model uses the concepts of multi-mechanism and bounding surface theory. This advanced constitutive approach involves thermo-plasticity of saturated and unsaturated soils. Bishop’s effective stress framework is adopted to represent the stress state in the soil. This stress is linked to the water retention curve, which is represented by an elasto-plastic model. Attention is focused particularly on the coupling relations inferred from this unified thermo-hydro-mechanical (THM) study. Finally, the theoretical aspects of the paper are supported by comparisons between numerical simulations and experimental results. [less ▲]

Detailed reference viewed: 28 (4 ULg)
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See detailFully implicit integration scheme for the GTN model
Guzmán Inostroza, Carlos Felipe ULg; Habraken, Anne ULg

Poster (2014, May 12)

Fully integration scheme for the GTN model, applied to some shear extensions. The model also comprises Hill type anisotropy and mixed (Isotropic/kinematic) hardening. The consistent tangent matrix is also ... [more ▼]

Fully integration scheme for the GTN model, applied to some shear extensions. The model also comprises Hill type anisotropy and mixed (Isotropic/kinematic) hardening. The consistent tangent matrix is also calculated. [less ▲]

Detailed reference viewed: 24 (2 ULg)
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See detailA fully nonlinear finite element model for orthodontic tooth movement prediction
Mengoni, Marlène ULg; D'Otreppe, Vinciane ULg; Ponthot, Jean-Philippe ULg

in Proceedings of the 10th International Symposium on Computer Methods in Biomechanics and Biomedical Engineering. (2012, April)

Detailed reference viewed: 41 (4 ULg)
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See detailThe fully-active and structurally-stable form of the mitochondrial ATP synthase of Polytomella sp is dimeric
Villavicencio-Queijeiro, Alexa; Vazquez-Acevedo, Miriam; Cano-Estrada, Araceli et al

in Journal of Bioenergetics & Biomembranes (2009), 41(1), 1-13

Mitochondrial F1FO-ATP synthase of chlorophycean algae is a stable dimeric complex of 1,600 kDa. It lacks the classic subunits that constitute the peripheral stator-stalk and the orthodox polypeptides ... [more ▼]

Mitochondrial F1FO-ATP synthase of chlorophycean algae is a stable dimeric complex of 1,600 kDa. It lacks the classic subunits that constitute the peripheral stator-stalk and the orthodox polypeptides involved in the dimerization of the complex. Instead, it contains nine polypeptides of unknown evolutionary origin named ASA1 to ASA9. The isolated enzyme exhibited a very low ATPase activity (0.03 Units/mg), that increased upon heat treatment, due to the release of the F-1 sector. Oligomycin was found to stabilize the dimeric structure of the enzyme, providing partial resistance to heat dissociation. Incubation in the presence of low concentrations of several non-ionic detergents increased the oligomycin-sensitive ATPase activity up to 7.0-9.0 Units/mg. Incubation with 3% (w/v) taurodeoxycholate monomerized the enzyme. The monomeric form of the enzyme exhibited diminished activity in the presence of detergents and diminished oligomycin sensitivity. Cross-linking experiments carried out with the dimeric and monomeric forms of the ATP synthase suggested the participation of the ASA6 subunit in the dimerization of the enzyme. The dimeric enzyme was more resistant to heat treatment, high hydrostatic pressures, and protease digestion than the monomeric enzyme, which was readily disrupted by these treatments. We conclude that the fully-active algal mitochondrial ATP synthase is a stable catalytically active dimer; the monomeric form is less active and less stable. Monomer-monomer interactions could be mediated by the membrane-bound subunits ASA6 and ASA9, and may be further stabilized by other polypeptides such as ASA1 and ASA5. [less ▲]

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See detailFulminant Hepatic Failure Induced by Venlafaxine and Trazodone Therapy: A Case Report.
Detry, Olivier ULg; Delwaide, Jean ULg; De Roover, Arnaud ULg et al

in Transplantation Proceedings (2009), 41(8), 3435-3436

Although acute hepatitis may be a side effect of many medications, most cases are reversible after treatment interruption, and fulminant hepatic failure (FHF) is rare. Venlafaxine and trazodone are 2 ... [more ▼]

Although acute hepatitis may be a side effect of many medications, most cases are reversible after treatment interruption, and fulminant hepatic failure (FHF) is rare. Venlafaxine and trazodone are 2 popular antidepressant agents. Alteration of liver enzyme levels has been reported as a side effect of these drugs at normal doses. Herein we have reported the case of a 48-year-old woman without any previous history of liver disease, who developed fulminant liver failure after 4 months of venlafaxine and trazodone therapy. She required liver transplantation, a procedure that was successful with full patient recovery. The first 5 years of follow-up were uneventful. This case documented that venlafaxine and trazodone at normal doses can produce severe liver toxicity. Liver tests should be monitored regularly in patients who receive this therapy. [less ▲]

Detailed reference viewed: 92 (16 ULg)
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See detailFumetto, Art Brut e dissidenza
Dejasse, Erwin ULg

in Rivista dell’Osservatorio Outsider Art (2011), 3

The article deals with the connections between comics on one hand and art brut and outsider art on the other hand

Detailed reference viewed: 40 (14 ULg)
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See detailFumigant toxicity of Mentha pulegium and Citrus aurantium essential oils to Tetranychus urticae (Acari: Tetranychidae) and Phytoseiulus persimilis (Acari: Phytoseiidae)
Attia, Sabrine; Grissa, K.L.; Lognay, Georges ULg et al

in Boeckx; Bossier, Peter; Smagghe, Guy (Eds.) et al Proceedings of the 65th international symposium on crop protection (2013, May 21)

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See detailFumure azotée : Effet d'un sous-semis sur une culture de maïs
Tychon, Bernard ULg; Capellen, O.; Foucart, G. et al

in Revue de l’Agriculture = Landbouwtijdschrift (1992), 45(2),

La superficie occupée par la culture de maïs en Lorraine belge n'a cessé d'augmenter depuis le début des années 70. Comme toutes les têtes de rotation, le maïs reçoit d'importantes quantités de fumier et ... [more ▼]

La superficie occupée par la culture de maïs en Lorraine belge n'a cessé d'augmenter depuis le début des années 70. Comme toutes les têtes de rotation, le maïs reçoit d'importantes quantités de fumier et de lisier. Ces concentrations élevées en matières organiques associées aux engrais minéraux sont très souvent à l'origine d'un bilan azoté déséquilibré. Dans ces conditions, les reliquats en azote généralement observés dans le sol au moment de la récolte constituent un danger réel pour la qualité des nappes phréatiques. Dans cet article, nous étudions un sous-semis de ray-grass (Lolium perenne L.). Le suivi concerne d'abord la compétition entre la culture de maïs et le sous-semis. Pour les conditions pédoclimatiques de l'essai, le sous-semis n'a pas concurrencé le maïs. L'étude porte ensuite sur l'efficacité de la technique comme moyen de lutte antipollution. Les différents profils de sol prélevés ont clairement montré l'effet d'un sous-semis, effet beaucoup plus marqué sur un limon sableux que sur un sable limoneux. [less ▲]

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See detailFumure azotée des céréales: L'azote minéral du sol en 1997-1998: conseil de fumure pour 1998
Frankinet, Marc; Goffart, Jean-Pierre; Destain, Jean-Pierre ULg et al

in Fumure et protection phytosanitaire des céréales (1998, February)

Detailed reference viewed: 8 (0 ULg)
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See detailFumure azotée et complémentation : Deux manières d'augmenter la charge des pâturages par la vache laitière
Limbourg, Pierre; Noirfalise, André; Bienfait, Jean-Marie ULg et al

in Annales de Médecine Vétérinaire (1980), 124

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See detailFumure azotée et protection fongicide des céréales d'hiver en Belgique
Bodson, Bernard ULg; Meeus, Patrick; Falisse, André

in Quatrième conférence internationale sur les maladies des plantes (1994, December 06)

The determination and the splitting of winter cereals nitrogen fertilisation as proposed and used in Belgium include three applications (tillering, beginning of stem elongation, flag leaf). While ... [more ▼]

The determination and the splitting of winter cereals nitrogen fertilisation as proposed and used in Belgium include three applications (tillering, beginning of stem elongation, flag leaf). While permitting to improve yield and haven quality, this largely contribute to limit croptogamic diseases development and thus the number of fungicide treatments needed to achieve an economic optimum. [less ▲]

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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

in Livre Blanc: Céréales - Gembloux (2007, February 28)

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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

Conference given outside the academic context (2008)

Detailed reference viewed: 4 (0 ULg)
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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Couvreur, Luc; Herman, Jean-Luc et al

in Livre Blanc: Céréales - Gembloux (2009, February 18)

Bilan de l'année écoulée et recommandations pratiques

Detailed reference viewed: 10 (0 ULg)
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See detailLa fumure azotée
Destain, Jean-Pierre ULg; Roisin, Christian; Marcoen, Jean Marie ULg et al

in Livre Blanc: Céréales - Gembloux (2010, February 24)

Detailed reference viewed: 46 (8 ULg)
See detailFumure et protection phytosanitaire des céréales
Monfort, Bruno; Herman, Jean-Luc; Bodson, Bernard ULg et al

in Livre Blanc - Céréales Gembloux (2003, September 09)

Detailed reference viewed: 37 (0 ULg)