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See detailL'expérience de la pauvreté vue par W.T. Vollmann
Herla, Anne ULg

Article for general public (2009)

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See detailSujets « métaboliquement sains », bien qu’obèses. Première partie: diagnostic, physiopathologie et prévalence
ESSER, Nathalie ULg; Paquot, Nicolas ULg; Scheen, André ULg

in Obésité (2009), 3

Around 30 to 50% of obese subjects are “metabolically normal” (MHO) whereas numerous nonobese subjects are “metabolically abnormal”. The distribution and function of adipose deposits seem to play a ... [more ▼]

Around 30 to 50% of obese subjects are “metabolically normal” (MHO) whereas numerous nonobese subjects are “metabolically abnormal”. The distribution and function of adipose deposits seem to play a crucial role in explaining this apparent paradox. The aim of this first article is to describe the clinical and biological characteristics that lead to the diagnosis of MHO, attempt to discover the etiopathogenesis of this syndrome and analyze the underlying pathophysiological mechanisms and, finally, to assess the prevalence of the MHO phenotype, which may vary according to the definition used and the population studied. [less ▲]

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See detailWill high-resolution/high-sensitivity SPECT ensure that PET is not the only survivor in nuclear medicine during the next decade?
Seret, Alain ULg

in European Journal of Nuclear Medicine and Molecular Imaging (2009), 36(3), 533

The future of SPECT and PET is discussed is the light of the most recent advances in SPECT and in the context of the supply in isotopes

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See detailThe value of 2D strain imaging during stress testing
Moonen, Marie ULg; Lancellotti, Patrizio ULg; Zacharakis, Dimitrios et al

in Echocardiography (2009), 26(3), 307

Stress echocardiography is increasingly used but its major limitation is the subjective interpretation of wall motion changes requiring experience. Speckle tracking enables simultaneous evaluation of ... [more ▼]

Stress echocardiography is increasingly used but its major limitation is the subjective interpretation of wall motion changes requiring experience. Speckle tracking enables simultaneous evaluation of radial, longitudinal, and circumferential myocardial deformation. Recently, two-dimensional (2D) strain has been found to be as reliable as sonomicrometry for the assessment of left ventricular (LV) regional function. In the presence of inducible ischemia, longitudinal and circumferential abnormalities preceed the decrease in radial deformation. Optimal cutoffs have been obtained from 2D strain rate (SR) at peak dobutamine stress to predict coronary artery disease. However, 2D strain rate does not yet provide incremental accuracy to visual interpretation by experts. Speckle tracking strain could be useful to better identify contractile reverse and biphasic response of viable myocardium but there are not yet clinical studies published in this setting. Preliminary results suggest that 2D strain obtained during exercise could be useful in asymptomatic patients with severe aortic stenosis or organic mitral regurgitation (MR). In conclusion, the reliability and clinical importance of 2D strain during stress will be specified by further investigations. [less ▲]

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See detailTraitement des carcinomes hépatocellulaires à un stade avancé
Van Daele, Daniel ULg; Belaiche, Jacques ULg; Delwaide, Jean ULg et al

in Revue Médicale de Liège (2009), 64(3), 140-147

Hepatocellular carcinoma is the main primitive tumor of the liver. It occurs in the setting of liver cirrhosis in more than 90% of the cases in developping countries. The prognosis depends on the size ... [more ▼]

Hepatocellular carcinoma is the main primitive tumor of the liver. It occurs in the setting of liver cirrhosis in more than 90% of the cases in developping countries. The prognosis depends on the size, number and extension of the tumor as well as on the severity of the underlying liver disease. The Barcelona Clinic Classification takes into account these different parameters and helps the clinician in the therapeutic decision. Some patients (around 25%) are amenable to therapy with a curative intent (liver transplantation, resection, destruction by radiofrequency). In patients with hepatocellular carcinoma at an intermediate stage, lipiodolized chemoembolization gives a survival advantage in comparison with placebo. No conventional regimen of chemotherapy has a proven survival benefit. In patients with a hepatocellular carcinoma at an advanced stage, sorafenib, an oral multi-targeted kinase inhibitor, is the first coumpound to demonstrate a significant effect on survival free of disease progression in a selected group of patients. Its toxicity profile is particularly favourable. Combination of surgical and medical therapies should be properly evaluated in clinical trials in the near future. [less ▲]

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See detailDistributed Dynamic Load Balancing for Iterative-Stencil Applications
Dethier, Gérard ULg; Marchot, Pierre ULg; de Marneffe, Pierre-Arnoul ULg

in Cracow Grid Workshop '08 Proceedings (2009, March)

In the context of jobs executed on heterogeneous clusters or Grids, load balancing is essential. Indeed, a slow machine must receive less work than a faster one otherwise the overall job termination will ... [more ▼]

In the context of jobs executed on heterogeneous clusters or Grids, load balancing is essential. Indeed, a slow machine must receive less work than a faster one otherwise the overall job termination will be delayed. This is particularly true for Iterative-Stencil Applications where tasks are run simultaneously and are interdependent. The problem of assigning coexisting tasks to machines is called mapping. With dynamic clusters (where the number of machines and their available power can change over time), dynamic mapping must be used. A new mapping must be calculated each time the cluster changes. The mapping calculation must therefore be fast. Also, a new mapping should be as close as possible to the previous mapping in order to minimize task migrations. Dynamic mapping methods exist but are based on iterative optimization algorithms. Many iterations are required to reach convergence. In the context of a distributed implementation, many communications are needed. We developed a new distributed dynamic mapping method which is not based on iterative optimization algorithms. Current results are encouraging. Load balancing execution time remains bounded for tested cluster sizes. Also, a decrease of ~20% of the global available computational power of a cluster leads to ~30% of migrated tasks during load rebalancing. A new mapping is therefore close to the previous one. [less ▲]

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See detailLa vignette thérapeutique de l'étudiant - Comment gérer une hypertension artérielle qui devient résistante?
Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2009), 64(3), 171-175

The management of arterial hypertension, a well known silent killer, is still a challenge for physicians fighting for an optimal control of blood pressure values. The problem is even more complex when ... [more ▼]

The management of arterial hypertension, a well known silent killer, is still a challenge for physicians fighting for an optimal control of blood pressure values. The problem is even more complex when, after a good response, the control of blood pressure becomes again worse. Our case record underscores the different steps allowing to increase the efficacy of blood pressure management in such secondary resistant form of hypertension. [less ▲]

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See detailEvaluation excentrique après plastie du LCA : modalités et profils
Croisier, Jean-Louis ULg; Gremeaux, V.; Maquet, Didier ULg et al

in Croisier, Jean-Louis; Codine, Philippe (Eds.) Exercice musculaire excentrique (2009)

Muscles play a key role in active knee stability. ACL reconstruction induces muscle weakness which justifies strength measurements after surgery. Thigh muscle performances under isokinetic conditions can ... [more ▼]

Muscles play a key role in active knee stability. ACL reconstruction induces muscle weakness which justifies strength measurements after surgery. Thigh muscle performances under isokinetic conditions can be measured very accurately. Eccentric measurements could implement classical concentric protocols after ACL reconstruction. In order to protect the graft against excessive loads, we avoid post-operative eccentric testing of the quadriceps in our clinical practice. By contrast, hamstring eccentric evaluation is recommended and shows a discriminant character, in particular in the form of a hamstring ecc / quadriceps conc mixed ratio. [less ▲]

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See detailSynthesis of polylactide/clay nanocomposites by in situ intercalative polymerization in supercritical carbon dioxide
Urbanczyk, Laetitia ULg; Ngoundjo, Fred; Alexandre, Michaël ULg et al

in European Polymer Journal (2009), 45(3), 643-648

Polylactide (PLA)/clay nanocomposites have been prepared by in situ ring-opening polymerization in supercritical carbon dioxide. Depending on the type of organoclay used, polylactide chains can be grafted ... [more ▼]

Polylactide (PLA)/clay nanocomposites have been prepared by in situ ring-opening polymerization in supercritical carbon dioxide. Depending on the type of organoclay used, polylactide chains can be grafted onto the clay surface, leading to an exfoliated morphology. Nanocomposites with high clay contents (30–50 wt.%), called masterbatches, have also been successfully prepared and were recovered as fine powders thanks to the unique properties of the supercritical fluid. Dilution of these masterbatches into commercial l-polylactide by melt blending has led to essentially exfoliated nanocomposites containing 3 wt.% of clay. The mechanical properties of these materials have been assessed by flexion and impact tests. Significant improvements of stiffness and toughness have been observed for the PLA/clay nanocomposites compared to the pure matrix, together with improved impact resistance. [less ▲]

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See detailOverview of cobalt-mediated radical polymerization: roots, state of the art and future prospects
Debuigne, Antoine ULg; Poli, Rinaldo; Jérôme, Christine ULg et al

in Progress in Polymer Science (2009), 34(3), 211-239

Controlled radical polymerization (CRP) techniques offer the opportunity to properly design polymer chains and adjust their chemical and physical properties. Among these techniques, cobalt-mediated ... [more ▼]

Controlled radical polymerization (CRP) techniques offer the opportunity to properly design polymer chains and adjust their chemical and physical properties. Among these techniques, cobalt-mediated radical polymerization (CMRP) distinguished itself by the high level of control imparted to the polymerization of acrylic and vinyl ester monomers, even for high molar masses. This article summarizes for the first time the advances in understanding and synthetic scope of CMRP since its discovery. Notably, the cobalt–carbon bond formation by dual contribution of reversible termination and degenerative chain transfer is discussed, as well as the impact of additives able to coordinate the metal. The potential of computational chemistry in the field of CMRP as a rationalization and predicting tool is also presented. These mechanistic considerations and achievements in macromolecular engineering will be discussed along with challenges and future prospects in order to assess the CMRP system as a whole. [less ▲]

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See detailPathologie ischio-jambière : évaluation et renforcement en mode excentrique
Croisier, Jean-Louis ULg; Crielaard, Jean-Michel ULg; Maquet, Didier ULg et al

in Croisier, Jean-Louis; Codine, Philippe (Eds.) Exercice musculaire excentrique (2009)

Undoubtedly, hamstring strains have close connections with the eccentric mode of contraction. Several authors have confirmed the discriminating character of the eccentric isokinetic assessment, in ... [more ▼]

Undoubtedly, hamstring strains have close connections with the eccentric mode of contraction. Several authors have confirmed the discriminating character of the eccentric isokinetic assessment, in particular using a mixed eccentric hamstrings / concentric quadriceps ratio. Low-intensity eccentric contractions promoting healing of good quality are recommended in the early phase of rehabilitation. Subsequently, strengthening exercises at high intensity contractions will be implemented. Tools to be used and specific modalities of the protocols are discussed in this paper. [less ▲]

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See detailProgramme excentrique dans la pathologie du coude : tendinopathie épicondylienne
Croisier, Jean-Louis ULg; Foidart-Dessalle, Marguerite ULg; Crielaard, Jean-Michel ULg et al

in Croisier, Jean-Louis; Codine, Philippe (Eds.) Exercice musculaire excentrique (2009)

Lateral epicondylitis represents a common overuse injury caused by repetitive gestures through sports activity, industrial work and hobby activities. In spite of many conservative treatment procedures ... [more ▼]

Lateral epicondylitis represents a common overuse injury caused by repetitive gestures through sports activity, industrial work and hobby activities. In spite of many conservative treatment procedures, prolonged symptoms and relapse are frequently reported. The goal of our study was to compare the outcome of patients performing an adapted isokinetic eccentric training with that of patients receiving a non-strengthening classical rehabilitation. Results, dealing with pain score evaluation, disability questionnaire, muscle strength measurement and ultrasonographic examination, highlight the relevance of implementing isokinetic adapted eccentric training in the management of lateral epicondylitis. [less ▲]

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See detailPALETTE: Online pedagogical catalogue of tools and services
Denis, Brigitte ULg; Vandeput, Etienne ULg

Report (2009)

This deliverable presents services and tools developed during the PALETTE project. Online descriptions, video teasers and printable documents are available from a “Service Gallery”. The teasers provide ... [more ▼]

This deliverable presents services and tools developed during the PALETTE project. Online descriptions, video teasers and printable documents are available from a “Service Gallery”. The teasers provide information from different points of views: a problem evoked by a CoP member, the answer provided by the developer and a supplementary account by a CoP mediator or an educationist. A series of printable documents give information on the services from the developer’s and a learning specialist’s points of views. The interface of the Service Gallery also provides a link to the PALETTE portal. A short survey helps the potential users to choose which service start to explore. A link to the Learning and Organisational Resources and another one to examples of generic scenarios illustrate some potential uses of the tools and services in order to sustain CoP’s activities. From the end of the PALETTE project (February 2009), these resources will be available from a website hosted at the CRP. [less ▲]

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See detailComparison of Ultra Capacitors, Hydraulic Accumulators and Batteries Technologies to Optimize Hybrid Vehicle Ecoefficiency
Nzisabira, Jonathan; Louvigny, Yannick ULg; Duysinx, Pierre ULg

in Proceeding of 2nd IEEE Int. Conference of Power Engineering, Energy, and Electric Drives (2009, March)

The main objective of vehicle powertrain hybridization is to improve the fuel consumption and environment pollutants impact (Eco-score) without decreasing the vehicle performances and other user ... [more ▼]

The main objective of vehicle powertrain hybridization is to improve the fuel consumption and environment pollutants impact (Eco-score) without decreasing the vehicle performances and other user satisfaction criteria. The Eco efficiency is a global index which accounts for both environmental impacts and user satisfaction. The Hybrid vehicles ability to overcome these two requirements depends on the optimal choice of their key mechanical, electric or hydraulic components. Some energy storage systems like ultra capacitors and hydraulic system are environmentally friendly and meet some user satisfaction criteria like daily cost, security, short charge/discharge duration and long life service. On the contrary, others like batteries have some times a environmental impact mitigate. The objective of this study is to establish a comparison between HEV (hybrid electric vehicle) and HHV(hybrid hydraulic vehicle) configuration by highlighting the effect of different energy storage systems (batteries, ultra capacitors, hydraulic system), mechanical and electric components sizes (engine, motors) upon the optimized HEV design taking care of both Eco-score and User satisfaction for different driving scenarios. The approach is formulated as a multidisciplinary optimization problem. At first, the HEV and HHV are modeled and simulated using ADVISOR (advanced vehicle simulator) with respect to several driving situations. Then emissions can be determined and the Ecoscore indicator can be calculated. User Satisfaction can be evaluated based on performance criteria extracted from ADVISOR simulation and on simple evaluation tools relying on the state-of-the art of technological information for safety, reliability and daily cost. The design problem is stated as follows: select mechanical, electric or hydraulic components (e.g. engine, motor and energy storage system sizes) to minimize the Ecoscore indicator and to maximize user satisfaction criteria subject to catalogue constraints on the choice of the components. The approach is illustrated on applications dealing with mild parallel hybrid buses. Results show that the hybrid electric buses using ultra capacitors have almost the same performances as those using batteries. However, the preferred choice would go towards super capacities because they have other appreciable properties compared to the batteries: the very high lifetime, high efficiency of charge and discharge and no polluting recyclability. Despite a smaller fuel saving than a HEV, the HHV technology has a chance to compete with HEV because of the hydraulic components low cost (industrial maturity), no pollutants recyclability due to the possible using of water as motor/pump fluid. HHV technology is a possible alternative in niche markets such as urban buses; bin-lorries or heavy urban delivery vehicles. [less ▲]

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See detailLe portfolio appliqué à la formation en logopédie
Maillart, Christelle ULg; Deum, Mélanie ULg; Grevesse, Pascale ULg et al

Poster (2009, March)

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See detailAlimentation durable : De la promotion des filières courtes à la promotion d’emplois durables
Ozer, Pierre ULg; Bay, Maud ULg

Scientific conference (2009, March)

Consommation durable ? Le thème de la consommation durable est relativement neuf. Il trouve ses origines au Sommet de la Terre qui s’est tenu en 1992 à Rio de Janeiro. Ce thème part du constat que les ... [more ▼]

Consommation durable ? Le thème de la consommation durable est relativement neuf. Il trouve ses origines au Sommet de la Terre qui s’est tenu en 1992 à Rio de Janeiro. Ce thème part du constat que les politiques publiques ne peuvent plus seulement se contenter d’agir sur la production ; infléchir également les modes de consommation écologiquement et socialement non soutenables étant devenu indispensable pour parvenir à un développement durable. Mais cela pose une série de questions. Quelles sont actuellement les spécificités des modes de consommation des ménages ? Quelles sont leurs capacités à évoluer vers la prise en compte des critères du développement durable ? Quels sont les rôles que doivent jouer les pouvoirs publics, les acteurs économiques et associatifs dans la consommation durable ? [less ▲]

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See detailDémocratie et Internet
Lejeune, Christophe ULg

Article for general public (2009)

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See detailLe réalisme sale de Guillermo Fadanelli
Vanden Berghe, Kristine ULg

Article for general public (2009)

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See detailLe théâtre-action, expression des minorités...
Brahy, Rachel ULg

Article for general public (2009)

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