Publications ORBi OA
Bookmark and Share    
Full Text
Peer Reviewed
See detailDeep drawing process with different elasto-plastic law
de Montleau, P.; Duchene, Laurent ULg; Bouvier, S. et al

in Stören, Sigurd (Ed.) Proceedings of the 7th ESAFORM conference on Material Forming (2004)

Recently, a combination of a texture based yield locus and of the Teodosiu's hardening model has been implemented in the Finite Element code LAGAMINE of the department M&S of the University of Liège. The ... [more ▼]

Recently, a combination of a texture based yield locus and of the Teodosiu's hardening model has been implemented in the Finite Element code LAGAMINE of the department M&S of the University of Liège. The yield locus is able to take into account the texture updating during a FE simulation. The texture evolves with respect to the crystalographic rotations due to the plastic deformations. Two hardening models are considered: the classical Swift istropic hardening model and the Teodosiu's hardening model that is a physically-based microstructural model. It takes into account intergranular heterogeneity due to the evolution of dislocation structures, that affects the isotropic and the kinematic hardening. The aim of the paper is to compare the influence of the hardening with the influence of the yield shape updating due to the texture evolution, on the final plastic anisotropy, for a deep drawing simulation. The tests are performed for the steel FeP06t that presents a non negligible initial anisotropy. [less ▲]

Detailed reference viewed: 51 (6 ULg)
Full Text
Peer Reviewed
See detailLocalizable effective theories, bootstrap and the parameters of hadron resonances
Semenov-Tyan-Shanskiy, Kirill ULg; Vereshagin, Alexander; Vereshagin, Vladimir

in AIP Conference Proceedings (2004), 717

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailFinite element prediction of the swift effect based on Taylor-type polycrystal plasticity models
Duchene, Laurent ULg; Delannay, L.; Habraken, Anne ULg

in Stören, Sigurd (Ed.) Proceedings of the 7th ESAFORM conference on Materials Forming (2004)

This paper describes the main concepts of the stress-strain interpolation model that has been implemented in the non-linear finite element code Lagamine. This model consists in a local description of the ... [more ▼]

This paper describes the main concepts of the stress-strain interpolation model that has been implemented in the non-linear finite element code Lagamine. This model consists in a local description of the yield locus based on the texture of the material through the full constraints Taylor’s model. The prediction of the Swift effect is investigated: the influence of the texture evolution is shown up. The LAMEL model is also investigated for the Swift effect prediction. [less ▲]

Detailed reference viewed: 26 (2 ULg)
Full Text
Peer Reviewed
See detailLes entreprises sociales d’insertion dans l’Union Européenne : un aperçu général
Davister, Catherine; Defourny, Jacques ULg; Grégoire, Olivier

in RECMA – Revue Internationale de l'Economie Sociale (2004), 293

Detailed reference viewed: 138 (15 ULg)
Full Text
Peer Reviewed
See detailWork Integration Social Enterprises in the European Union: an Overview of Existing Models
Davister, Catherine; Defourny, Jacques ULg; Grégoire, Olivier

in RECMA – Revue Internationale de l'Economie Sociale (2004), 293

Detailed reference viewed: 68 (7 ULg)
Full Text
Peer Reviewed
See detailL’émergence du concept d’entreprise sociale
Defourny, Jacques ULg

in Reflets et Perspectives de la Vie Economique (2004), XLIII(3), 9-23

This paper tries to show how the concept of social enterprise is increasingly used in many countries. In Europe, the most significant steps have been taken by the Italian parliament in the early 90’s and ... [more ▼]

This paper tries to show how the concept of social enterprise is increasingly used in many countries. In Europe, the most significant steps have been taken by the Italian parliament in the early 90’s and since 2002 by the UK government which has decided to map and promote social enterprises. From a scientific point of view, the approach built by the EMES European Research Network, based on comparative research in all EU countries, provides a solid basis for further theoretical and empirical work as well as new insights into the whole social economy. [less ▲]

Detailed reference viewed: 151 (17 ULg)
Full Text
See detailLes données du Réseau Wallon de Comptabilité Agricole (RWCA)
Dogot, Thomas ULg; Lebailly, Philippe ULg

in Direction Générale de l'Agriculture, Division de la Politique Agricole (IG1) et Direction de l'Analyse Economique Agricole (D14); Conseil Supérieur Wallon de l'Agriculture, de l'Agro-alimentaire et de l'Alimentation (CSWAAA) (Eds.) Evolution de l'économie agricole et horticole de la Région wallonne en 2002 (2004)

Detailed reference viewed: 40 (10 ULg)
Full Text
Peer Reviewed
See detailEcology And Conservation Of Belgian Populations Of Viola Calaminaria, A Metallophyte With A Restricted Geographic Distribution
Bizoux, Jean-Philippe ULg; Brevers, F.; Meerts, P. et al

in Belgian Journal of Botany (2004), 137(1), 91-104

Viola calaminaria (Gingins) Lej. is a rare and threatened species, endemic to metalliferous soils in E Belgium, S Netherlands and W Germany. In order to provide basic information for a conservation ... [more ▼]

Viola calaminaria (Gingins) Lej. is a rare and threatened species, endemic to metalliferous soils in E Belgium, S Netherlands and W Germany. In order to provide basic information for a conservation strategy, we performed an ecogeographic survey of almost all V. calaminaria populations currently existing in Belgium. Twenty-four populations were found, distributed in three geographic groups all in the Province of Liège. The area covered by V. calaminaria ranged from < 1 m2 to 3.2 ha. The largest populations were found in sites contaminated by atmospheric deposits from metal smelters. Soils were extremely variable in heavy metal and nutrient concentrations, but concentrations of Zn, Pb and Cd were consistently higher than reference values for normal soils. V. calaminaria was most often found in association with other metallophyte and pseudometallophyte taxa typical of metalliferous sites. Plant communities identified by TWINSPAN analysis generally fitted the heavy metal associations previously described but two unusual heavy metal plant communities were identified. Based on a canonical correspondence analysis, pH was the only factor that was clearly correlated with the floristic composition of plant communities associated to V. calaminaria. This study confirmed the ecological endemic status of V. calaminaria and the importance of the conservation of metalliferous sites. [less ▲]

Detailed reference viewed: 78 (35 ULg)
Full Text
Peer Reviewed
See detailLe cas clinique du mois. Angiomyxome superficiel.
Quatresooz, Pascale ULg; Hermanns, Jean-François ULg; Legrain, A. et al

in Revue Médicale de Liège (2004), 59(3), 128-30

Some cutaneous neoplasms are seemingly harmless, but they may prove to be problematic due to their propensity to invade or to recur. We present 2 cases of superficial angiomyxoma.

Detailed reference viewed: 50 (2 ULg)
Full Text
Peer Reviewed
See detailDiet-induced obesity and reduced skin cancer susceptibility in matrix metalloproteinase-19 deficient mice
Pendas, A. M.; Folgueras, A. R.; LLano, E. et al

in Molecular & Cellular Biology (2004), 24(12), 5304-13

Matrix metalloproteinase 19 (MMP-19) is a member of the MMP family of endopeptidases that, in contrast to most MMPs, is widely expressed in human tissues under normal quiescent conditions. MMP-19 has been ... [more ▼]

Matrix metalloproteinase 19 (MMP-19) is a member of the MMP family of endopeptidases that, in contrast to most MMPs, is widely expressed in human tissues under normal quiescent conditions. MMP-19 has been found to be associated with ovulation and angiogenic processes and is deregulated in diverse pathological conditions such as rheumatoid arthritis and cancer. To gain further insights into the in vivo functions of this protease, we have generated mutant mice deficient in Mmp19. These mice are viable and fertile and do not display any obvious abnormalities. However, Mmp19-null mice develop a diet-induced obesity due to adipocyte hypertrophy and exhibit decreased susceptibility to skin tumors induced by chemical carcinogens. Based on these results, we suggest that this enzyme plays an in vivo role in some of the tissue remodeling events associated with adipogenesis, as well as in pathological processes such as tumor progression [less ▲]

Detailed reference viewed: 11 (1 ULg)
Full Text
Peer Reviewed
See detailLa non-expression de l’objet direct en égyptien ancien : études valentielles
Winand, Jean ULg

in Lingua Aegyptia [= LingAeg] (2004), (12), 205-234

Detailed reference viewed: 59 (3 ULg)
Full Text
Peer Reviewed
See detailDéveloppement de systèmes spatiaux d'aide à la décision en environnement: applications de l'Outil Geo-Environnemental d'Aide a la Décision (OGEAD) valorisant les données sols.
Engels, Patrick ULg; Bock, Laurent ULg; Hecq, P. et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2004), 8(2),

Detailed reference viewed: 17 (5 ULg)
Full Text
See detailRenormalization in effective theories: Prescriptions for kaon-nucleon resonance parameters
Semenov-Tyan-Shanskiy, Kirill ULg

in Lipatov, L.; Kim, V. (Eds.) Proceedings of First International Workshop, Hadron Structure and QCD, from low to high energies, Repino, St. Petersburg, Russia, 18-22 May 2004 (2004)

Detailed reference viewed: 17 (0 ULg)
Full Text
See detailRenormalization programme for effective theories
Vereshagin, Vladimir; Semenov-Tyan-Shanskiy, Kirill ULg; Vereshagin, Alexander

in Lipatov, L.; Kim, V. (Eds.) Proceedings of First International Workshop, Hadron Structure and QCD, from low to high energies, Repino, St. Petersburg, Russia, 18-22 May 2004 (2004)

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailMineralogical characteristics of copper flotation products from Cayeli mine, Turkey and their influence to mineral processing
Strashimirov, S.; Dobrev, S.; Stamenov, S. et al

in Annual of the University of Mining and Geology, Sofia, 47, I, 147-153 (2004)

The paper presents mineralogical characteristics and pecularities of minerals distribution in products from Cu cycle of clastic ore mineral processing in Cayeli concentrator, Turkey. Special attention has ... [more ▼]

The paper presents mineralogical characteristics and pecularities of minerals distribution in products from Cu cycle of clastic ore mineral processing in Cayeli concentrator, Turkey. Special attention has been drawn to the mineralogical pecularities of sphalerite. The study has covered 16 samples from Cu flotation feed, Cu rougher concentrate, Cu final concentrate and tailing, each sieved in 4 granulometric classes. Significant quantity of sphalerite charactarized by higher amount of Cu and Fe as isomorphic impurities or extemely fine crystals of chalcopyrite are present in the Cu concentrate. Based on the performed studies, an improvement in the processing circuit has been suggested - especially in the grinding and hydrocycloning circuits. [less ▲]

Detailed reference viewed: 128 (13 ULg)
Full Text
See detailL'analisi sociologica di un corpus derivato da fori di discussione. Arricchimento reciproco delle analisi della conversazione, dei testi e di corpus
Lejeune, Christophe ULg

in Lancia, Franco (Ed.) Strumenti per l'analisi dei testi. Introduzione all'uso di T-LAB (2004)

Detailed reference viewed: 34 (7 ULg)
Full Text
Peer Reviewed
See detailA hydrographic and biochemical climatology of the Mediterranean and the Black Sea: some statistical pitfalls
Rixen, Michel; Beckers, Jean-Marie ULg; Maillard, Catherine

in Vandenberghe, E.; Brown, M.; Costello, M.J (Eds.) et al IOC Workshop Report 188 (2004)

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailViability of equine articular chondrocytes in alginate beads exposed to different oxygen tensions.
Schneider, Nicole ULg; Lejeune, Jean-Philippe ULg; Deby, Carol et al

in Veterinary Journal (2004), 168

Ischaemia and reperfusion are suspected to alter chondrocyte metabolism. Here, we studied the effects of three oxygen (O2) tensions on the viability of equine articular chondrocytes isolated from the ... [more ▼]

Ischaemia and reperfusion are suspected to alter chondrocyte metabolism. Here, we studied the effects of three oxygen (O2) tensions on the viability of equine articular chondrocytes isolated from the cartilage of the distal interphalangeal joint of horses. Chondrocytes were cultured in alginate beads under 1%, 5% or 21% gas phase O2 concentration for 14 days, cellular growth kinetics were measured (n=6), and the cells were observed by light microscopy after staining for necrotic and apoptotic cell detection. For information about the metabolic status, the intracellular adenosine triphosphate (ATP) content was measured. The number of chondrocytes remained stable for the first eight days, then decreased especially at 1% and 21% O2. At 21% O2, normal cells decreased and necrotic cells increased at the end of the 14 day-period. No significant variations were found at 5% O2 except for a decrease in necrotic cells at day 14. Most apoptotic cells were found at 1% O2 from days 5 to 11, and normal cells decreased during the same period. But an unexpected increase in normal cells and decrease in apoptotic cells were observed at day 14. The intracellular ATP content remained stable. It was concluded that, in a three-dimensional culture model of equine articular chondrocytes, O2 tension affected the viability of the cells after an 11-day period, with the most important effects observed at 21% and 1% O2 conditions. [less ▲]

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
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 ▲]

Detailed reference viewed: 56 (2 ULg)