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See detailAugmentation de la solubilité de l'acétate de cyprotérone par formation de complexes d'inclusion dans les cyclodextrines
Henry de Hassonville, Sandrine; Perly, Bruno; Piel, Géraldine ULg et al

Conference (2002, February)

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See detailL’augmentation de la tension de l’oxygène peut-elle produire l’apnée ?
Fredericq, Léon ULg

in Archives de Biologie (1895), XIV

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See detailL'augmentation des hospitalisations contraintes : un constat préoccupant.
Tortolani, Isabelle ULg; Gayetot, Delphine ULg; Duquesne, Patricia ULg et al

in Acta Psychiatrica Belgica (2008), 108

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See detailAugmentation of type IV collagenase, laminin receptor, and Ki67 proliferation antigen associated with human colon, gastric, and breast carcinoma progression.
D'Errico, A.; Garbisa, S.; Liotta, L. A. et al

in Modern Pathology : An Official Journal of the United States & Canadian Academy of Pathology, Inc (1991), 4(2), 239-46

The proportion of neoplastic cells immunocytochemically positive for type IV collagenase (IVase), laminin receptor (LR), and Ki67 proliferation-associated antigen increased during the progression of human ... [more ▼]

The proportion of neoplastic cells immunocytochemically positive for type IV collagenase (IVase), laminin receptor (LR), and Ki67 proliferation-associated antigen increased during the progression of human colon, gastric, and breast carcinomas. Thirty cases of colonic adenoma were compared with 30 cases of Dukes' A or B stage carcinoma and ten cases of Dukes' C stage carcinoma. The percentage of positive cells increased significantly (P less than 0.001) for all three antigens comparing carcinomas with adenomas and Dukes' C stage compared with Dukes' A/B stage. The same pattern of antigen correlation with progression was found with 40 human gastric carcinomas. Gastric carcinomas classified as well-differentiated advanced stage contained a significantly higher proportion of tumor cells positive for IVase (P less than 0.001), LR (P less than 0.001), and Ki67 (P less than 0.001) compared with well-differentiated superficial tumors. Gastric carcinomas classified as poorly differentiated superficial had a significantly higher proportion of cells positive for Ki67 (P less than 0.016), but not IVase (P less than 0.069) or LR (P less than 0.075), compared with poorly differentiated advanced tumors. Metastasis of colon and gastric carcinoma retained the immunostaining pattern of the primary tumors. Thirty cases of breast neoplasia were compared with 30 adjacent samples of normal duct epithelium. A positive correlation (P less than 0.001) was found for the immunoreactivity of all three antigens in the invasive carcinomas compared with the normal epithelium. Invasive ductal carcinoma and invasive lobular carcinoma had a significantly higher percentage of immunoreactivity for the three antigens compared with corresponding in situ lesions. [less ▲]

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See detailAugmentation osseuse sous-sinusienne : actualisation du concept du sinus lift.
LAMBERT, France ULg; LECLOUX, Geoffrey ULg; ROMPEN, Eric ULg

in Revue d'Odonto-Stomatologie [=ROS] (2008)

Sinus floor elevation is a technique allowing implant placement in the posterior edentulous maxilla when residual bone height is limited. This technique has evolved a lot since it has been first ... [more ▼]

Sinus floor elevation is a technique allowing implant placement in the posterior edentulous maxilla when residual bone height is limited. This technique has evolved a lot since it has been first introduced in the eighties. Nowadays, this approach is considered as predictable, simple and practicable under local anaesthesia. This present article aims at understanding clearly the biological phenomenon of “sinus- lift”. Moreover, the surgical protocol used at the University of Liège is considered didactically and reasoned according to the scientific literature. [less ▲]

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See detailAugmentation osseuse sous-sinusienne : actualisation du concept du sinus lift.
Lambert, France ULg; Lecloux, Geoffrey ULg; Rompen, Eric ULg

in Revue d'Odonto-Stomatologie (2008), 37(1), 3-17

L’élévation du plancher sinusal est une technique permettant de placer des implants d’une longueur suffisante au niveau du maxillaire postérieur. Depuis qu’elle a été initialement décrite dans les années ... [more ▼]

L’élévation du plancher sinusal est une technique permettant de placer des implants d’une longueur suffisante au niveau du maxillaire postérieur. Depuis qu’elle a été initialement décrite dans les années 80, cette technique a beaucoup évolué. A l’heure actuelle, on peut considérer cette approche comme prédictible, simple et réalisable au fauteuil sous anesthésie locale. Cet article vise d’abord à expliciter clairement le phénomène biologique du « sinus-lift », ensuite, de décrire le protocole chirurgical que nous appliquons à l’Université de Liège (Belgique) et de le confronter avec la littérature scientifique existante. [less ▲]

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See detailAn augmented Lagrangian and reduced index formulation for the analysis of multibody systems with impacts
Bruls, Olivier ULg; Acary, Vincent; Cavalieri, Federico J. et al

Conference (2013, July)

This paper presents a formalism for the simulation of nonsmooth dynamic systems with unilateral constraints, which integrates the contributions of impacts with first order accuracy in a fully implicit way ... [more ▼]

This paper presents a formalism for the simulation of nonsmooth dynamic systems with unilateral constraints, which integrates the contributions of impacts with first order accuracy in a fully implicit way, while the other contributions are integrated with second-order accuracy. Here, the smooth contribution of the reaction forces associated with bilateral and unilateral constraints is also integrated with second-order accuracy. Therefore, in free flight phases, the algorithm is strictly equivalent to a classical second-order scheme. Moreover, following the idea of Gear, Gupta and Leimkuhler, bilateral and unilateral constraints are imposed both at position and velocity levels. This means that the constraints are enforced exactly and no penetration is allowed. In the absence of unilateral constraints, the method leads to a formulation of the equation of motion as an index-2 differential-algebraic equation. Finally, the method is based on a reformulation of the LCP as an augmented Lagrangian equation with a suitable activation / deactivation criterion for the unilateral constraints. The resulting system of nonsmooth equations is solved using a monolithic semi-smooth Newton algorithm. [less ▲]

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See detailAn augmented Lagrangian optimization method for inflatable structures analysis problems
Bruyneel, Michaël ULg; Jetteur, Pierre ULg; Granville, D. et al

in Structural and Multidisciplinary Optimization (2006), 32(5), 383-395

This paper describes the development of an augmented Lagrangian optimization method for the numerical simulation of the inflation process in the design of inflatable space structures. Although the Newton ... [more ▼]

This paper describes the development of an augmented Lagrangian optimization method for the numerical simulation of the inflation process in the design of inflatable space structures. Although the Newton-Raphson scheme was proven to be efficient for solving many nonlinear problems, it can lead to lack of convergence when it is applied to the simulation of the inflation process. As a result, it is recommended to use an optimization algorithm to find the minimum energy configuration that satisfies the equilibrium equations characterizing the final shape of the inflated structure subject to an internal pressure. On top of that, given that some degrees of freedom may be linked, the optimum may be constrained, and specific optimization methods for constrained problems must be considered. The paper presents the formulation and the augmented Lagrangian method (ALM) developed in SAMCEF Mecano for inflatable structures analysis problems. The related quasi-unconstrained optimization problem is solved with a nonlinear conjugate gradient method. The Wolfe conditions are used in conjunction with a cubic interpolation for the line search. Equality constraints are considered and can be easily treated by the ALM formulation. Numerical applications present simulations of unconstrained and constrained inflation processes (i.e., where the motion of some nodes is ruled by a rigid body element restriction and/or problems including contact conditions). [less ▲]

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See detailAugmented Lagrangian procedure for implicit computation of contact-impact between deformable bodies.
Graillet, D.; Ponthot, Jean-Philippe ULg; Stainier, Laurent ULg

in International Journal of Crashworthiness (2001), 6(2), 209-221

This paper shows how efficiency can be improved by using an adequate Augmented Lagrangian procedure instead of the classical and well-known Penalty method for solving contact-impact problems between ... [more ▼]

This paper shows how efficiency can be improved by using an adequate Augmented Lagrangian procedure instead of the classical and well-known Penalty method for solving contact-impact problems between deformable bodies, including frictional contact, large deformations, dynamical effects and inelasticity phenomena The Augmented Lagrangian method has already enjoyed great success in solving constrained minimisation problems or incompressibility conditions. Alternatives to existing automation techniques for augmentations are presented. Starting from a Penalty method, it will be seen how the Augmented Lagrangian decreases ill-conditioning of governing equations and gives a more precise solution with a lower CPU-cost. Several original simultaneous criteria are proposed for optimising the number and the location of the augmentations in an incremental implicit resolution. Application of the method is done for two axisymmetric impact problems. [less ▲]

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See detailAugust 1981 Crisis of V348 Sgr
Heck, A.; Houziaux, Léo ULg; Manfroid, Jean ULg

in Information Bulletin on Variable Stars (1982), 2184

Not Available

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See detailAuguste à Eleusis. Un aspect méconnu de l'idéologiqe augustéenne
Rochette, Bruno ULg

in Cahiers de Clio (1996), 127(automne), 3-14

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See detailAuguste et Rome dans la perception des premiers chrétiens
Fialon, Sabine ULg

Scientific conference (2015, March 05)

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See detailAugustin (Pseudo-), S., De vita christiana
Adam, Renaud ULg

in De Schepper, Marcus; Kelders, Ann; Pauwels, Jan (Eds.) Les seigneurs du livre. Les grands collectionneurs du XIXème siècle à la Bibliothèque royale de Belgique (2008)

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See detailAugustinus (Pseudo-), S., De vita christiana
Adam, Renaud ULg

in De Schepper, Marcus; Kelders, Ann; Pauwels, Jan (Eds.) In de ban van boeken. Grote verzamelaars uit de negentiende eeuw in de Koninklijke Bibliotheek van België (2008)

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See detailAugustus Latinus. Purisme, pouvoir, politique et idéologie sous Auguste
Rochette, Bruno ULg

Scientific conference (1994, November)

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See detailAugustus Latinus. Purisme, pouvoir, politique et idéologie sous Auguste
Rochette, Bruno ULg

in Bulletin de l'Institut Historique Belge de Rome (1996), 66

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