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See detailLa marmite et le ragoût
Jacquemain, Marc ULg

in Brausch, Géraldine; Delruelle, Edouard (Eds.) L'inventivité démocratique aujourd'hui : le politique à l"épreuve des pratiques (2005)

Critical general theory, mainly from the marxist tradition seems to see society as dominated from above : social crativity can be compared with a stew in a pot that is above to explode if one does not ... [more ▼]

Critical general theory, mainly from the marxist tradition seems to see society as dominated from above : social crativity can be compared with a stew in a pot that is above to explode if one does not take off the lid. From various parts of social theory (Boltanski, Negri, Castoriadis...) we can present an alternative view where domination has penetrated within the pot : contradictions are not only between the bottom and the top but everywhere within society and inside people themselves. A critical theory must accomodate this view that seems more convincing than the traditional one. [less ▲]

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See detailConfrontation anatomo-clinique. Carcinome spinocellulaire de la jambe chez une octogenaire
Quatresooz, Pascale ULg; Letot, Bernard ULg; Pierard, Gérald ULg

in Revue Médicale de Liège (2005), 60(7-8), 680-2

An octogenarian woman developed lesions of the leg suggesting the diagnosis of cutaneous cancer at the dermatological examination. A biopsy revealed the carcinomatous nature of the neoplasm. An additional ... [more ▼]

An octogenarian woman developed lesions of the leg suggesting the diagnosis of cutaneous cancer at the dermatological examination. A biopsy revealed the carcinomatous nature of the neoplasm. An additional immunohistochemical examination was performed for scientific purposes. The neoplastic structures were not surrounded by a basement membrane and its framework of collagen IV. The dermal dendrocytes were abundant in the peritumoral stroma. This situation was previously interpreted as a favourable prognostic factor. [less ▲]

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See detailComment je traite ... la dermatite atopique par le pimecrolimus topique (Elidel). Le paradigme émergent des inhibiteurs de la calcineurine.
Pierard, Claudine ULg; Quatresooz, Pascale ULg; Pierard, Gérald ULg

in Revue Médicale de Liège (2005), 60(3), 136-40

Topical calcineurin inhibitors, also called topical immunomodulators or downregulators, represent an innovative class of non-steroidal anti-inflammatory agents. Pimecrolimus 1% cream (Elidel) is one ... [more ▼]

Topical calcineurin inhibitors, also called topical immunomodulators or downregulators, represent an innovative class of non-steroidal anti-inflammatory agents. Pimecrolimus 1% cream (Elidel) is one representative drug available for the treatment of atopic dermatitis. Unlike topical steroids, this drug does not affect collagen synthesis and does not alter the dendritic cell functions and the barrier function of the skin. [less ▲]

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See detailEtiopathogenie et physiopathologie du diabete de type 2
Fery, Françoise; Paquot, Nicolas ULg

in Revue Médicale de Liège (2005), 60(5-6), 361-8

Etiopathogenesis of type 2 diabetes is complex and still partially unknown. Its etiology is determined by the interaction of genetic and environmental factors. The genetic contribution is important, but ... [more ▼]

Etiopathogenesis of type 2 diabetes is complex and still partially unknown. Its etiology is determined by the interaction of genetic and environmental factors. The genetic contribution is important, but has a polygenic origin. Obesity, especially when fat mass is preferably located in the abdomen, is the main predisposing factor for type 2 diabetes, and almost 80% of diabetic patients are overweight or obese. The diabetogenic effect of obesity is due to the capacity of excessive fat mass to induce or aggravate insulin resistance. Increasing lack of physical activity is also a contributing factor as it increases insulin resistance. As far as pathophysiology is concerned, the development of type 2 diabetes results from the coexistence of abnormalities of insulin secretion and insulin action. Insulin secretory dysfunction, whose underlying mechanism remains poorly understood, is characterized by a relative defect in circulating insulin levels of variable severity. Resistance to insulin action is located in the liver (increased hepatic glucose production), in the skeletal muscle (decreased muscular glucose uptake) and in the adipose tissue (exaggerated lipolysis with elevated plasma free fatty acids). Changes in life-style habits (weight reduction, regular physical activity) are able to prevent or delay the development of type 2 diabetes. [less ▲]

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See detailContribution de l'élevage ovin à l'augmentation de la production de viande au Bénin
Gbangboche, A. B.; Hornick, Jean-Luc ULg; Abiola, F. A. et al

in Revue Africaine de Santé et de Productions Animales [=RASPA] (2005)

Cet article a relaté la situation de l’élevage des ruminants à travers la production, la consommation et la commercialisation de viande en Afrique subsaharienne au cours de ces trois dernières décennies ... [more ▼]

Cet article a relaté la situation de l’élevage des ruminants à travers la production, la consommation et la commercialisation de viande en Afrique subsaharienne au cours de ces trois dernières décennies. Il faut signaler que l’élevage des ovins représente particulièrement l’un des secteurs d’activité importants dans les milieux ruraux, puisqu’il nécessite peu d’investissements et les conditions de commercialisation des ovins sont très souples par rapport aux bovins pour couvrir les besoins financiers ponctuels de l’éleveur. Au Bénin, malgré la rusticité et la trypanotolérance des ovins Djallonké, un certain nombre de contraintes font que leur niveau de production est resté faible par rapport à la moyenne de l’Afrique subsaharienne. Pour optimiser la production ovine dans ce pays, l’une des priorités à la mise en place des schémas d’amélioration génétique, serait entre autre, l’estimation des facteurs influençant la croissance et la reproduction des ovins Djallonké, deux caractères intimement liés à la production de viande. [less ▲]

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See detailExploration électromyographique des muscles paravertébraux
TOMASELLA, Marco ULg; WANG, François-Charles ULg

in Correspondances en Nerf & Muscle (2005)

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See detailNouvelles datations de deux ensembles aurignaciens du bassin mosan
Flas, Damien ULg

in Anthropologica et Praehistorica : Bulletin de la Société Royale Belge d'Anthropologie et de Préhistoire (2005), 116

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See detailDéfinir le patrimoine culturel immatériel... une gageure ?
Lempereur, Françoise ULg

in Rabaska : Revue d'Ethnologie de l'Amérique Française (2005), 3

In 2004, Bernard Genest and Camille Lapointe published a research paper about the intangible cultural heritage as a social and economical wealth, token of the Quebec Ministery of Culture policy. Françoise ... [more ▼]

In 2004, Bernard Genest and Camille Lapointe published a research paper about the intangible cultural heritage as a social and economical wealth, token of the Quebec Ministery of Culture policy. Françoise Lempereur shows the relevance of this document and analyses it. [less ▲]

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See detailEvaluation of the DR-CALUX screening of food and feed, according to regulation levels including DL-PCB
Scippo, Marie-Louise ULg; Rybertt, Soledad; Focant, Jean-François ULg et al

in Organohalogen Compounds (2005), 67

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See detailL'aide contrainte: contenant ouvert, mentalisation et loi
Malchair, Alain ULg

in MISSON, Francis; PONCELET, Muguette; HANNECART, Pierre (Eds.) Enfants maltraités, jeunes en danger, entre social et justice (2005)

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See detailDecalactone production by Yarrowia lipolytica under increased O2 transfer rates
Aguedo, Mario ULg; Gomes, N.; Garcia, E. E. et al

in Biotechnology Letters (2005), 27(20), 1617-1621

Yarrowia lipolytica converts methyl ricinoleate to γ-decalactone, a high-value fruity aroma compound. The highest amount of 3-hydroxy-γ- decalactone produced by the yeast (263 mg∈l-1) occurred by ... [more ▼]

Yarrowia lipolytica converts methyl ricinoleate to γ-decalactone, a high-value fruity aroma compound. The highest amount of 3-hydroxy-γ- decalactone produced by the yeast (263 mg∈l-1) occurred by increasing the k L a up to 120 h-1 at atmospheric pressure; above it, its concentration decreased, suggesting a predominance of the activity of 3-hydroxyacyl-CoA dehydrogenase. Cultures were grown under high-pressure, i.e., under increased O2 solubility, but, although growth was accelerated, γ-decalactone production decreased. However, by applying 0.5 MPa during growth and biotransformation gave increased concentrations of dec-2-en-4-olide and dec-3-en-4-olide (70 mg∈l -1). © Springer 2005. [less ▲]

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See detailSlavery Revisited through Vocal Kaleidoscopes: Polyphony in Novels by Fred D'Aguiar and Caryl Phillips
Ledent, Bénédicte ULg

in Misrahi-Barak (Ed.) Revisiting Slave Narratives / Le avatars contemporains des récits d'esclaves (2005)

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See detailSurface properties of Yarrowia lipolytica and their relevance to γ-decalactone formation from methyl ricinoleate
Aguedo, Mario ULg; Waché, Y.; Belin, J.-M. et al

in Biotechnology Letters (2005), 27(6), 417-422

The surface of the lipid-degrading yeast, Yarrowia lipolytica, was characterized by contact angle and zeta potential (ζ) measurements. The cells were mainly hydrophilic with a negative charge that was ... [more ▼]

The surface of the lipid-degrading yeast, Yarrowia lipolytica, was characterized by contact angle and zeta potential (ζ) measurements. The cells were mainly hydrophilic with a negative charge that was only affected from pH 2 to 4. To study the effects of the surface charges on the biotransformation of methyl ricinoleate into the aroma compound, γ-decalactone, the ζ values of the substrate droplets were modified by adding a cationic surfactant into the medium at concentrations that did not diminish cell viability: the adhesion of the lipid substrate to the cells was increased but not the overall performance of the process, therefore the adhesion is not the rate limiting here. Our methodology offers interesting perspectives for further applications. © Springer 2005. [less ▲]

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See detailEXploration des processus inhibiteurs dans le vieillissement normal et la maladie d'Alzheimer
Collette, Fabienne ULg; Adam, Stéphane ULg; Hogge, Michaël et al

in Revue Neurologique (2005), 161(12), 467

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See detailIntegrated Simulation and Reduced-Order Modeling of Controlled Flexible Multibody Systems
Bruls, Olivier ULg

Doctoral thesis (2005)

A mechatronic system is an assembly of technological components, such as a mechanism, sensors, actuators, and a control unit. Recently, a number of researchers and industrial manufacturers have ... [more ▼]

A mechatronic system is an assembly of technological components, such as a mechanism, sensors, actuators, and a control unit. Recently, a number of researchers and industrial manufacturers have highlighted the potential advantages of lightweight parallel mechanisms with respect to the accuracy, dynamic performances, construction cost, and transportability issues. The design of a mechatronic system with such a mechanism, requires a multidisciplinary approach, where the mechanical deformations have to be considered. This thesis proposes two original contributions in this framework. First, a modular and systematic method is developed for the integrated simulation of mechatronic systems, which accounts for the strongly coupled dynamics of the mechanical and non-mechanical components. The equations of motion are formulated using the nonlinear Finite Element approach for the mechanism, and the block diagram language for the control system. The time integration algorithm relies on the generalized-alpha method, known in structural dynamics. Hence, well-defined concepts from mechanics and from system dynamics are combined in a unified formulation, with guaranteed convergence and stability properties. Several applications are treated in the fields of robotics and vehicle dynamics. Usual methods in flexible multibody dynamics lead to complex nonlinear models, not really suitable for control design. Therefore, a systematic nonlinear model reduction technique is presented, which transforms an initial high-order Finite Element model into a low-order and explicit model. The order reduction is obtained using the original concept of Global Modal Parameterization: the motion of the assembled mechanism is described in terms of rigid and flexible modes, which have a global physical interpretation in the configuration space. The reduction procedure involves the component-mode technique and an approximation strategy in the configuration space. Two examples are presented: a four-bar mechanism, and a parallel kinematic machine-tool. Finally, both simulation and modeling tools are exploited for the dynamic analysis and the control design of an experimental lightweight manipulator with hydraulic actuators. A Finite Element model is first constructed and validated with experimental data. A reduced model is derived, and an active vibration controller is designed on this basis. The simulation of the closed-loop mechatronic system predicts remarkable performances. The model-based controller is also implemented on the test-bed, and the experimental results agree with the simulation results. The performances and the other advantages of the control strategy demonstrate the relevance of our developments in mechatronics. [less ▲]

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See detailGrey level intercepts distributions and grain size estimation
Lebichot, Sophie; Dislaire, Godefroid; Pirard, Eric ULg et al

in Proceedings 8th European Congress for Stereology and Image Analysis (2005)

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