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See detailA droplet of spectroscopy
Terwagne, Denis ULg; Gilet, Tristan ULg; Vandewalle, Nicolas ULg et al

Conference (2008, November)

Droplet coalescence in a liquid bath can be delayed by oscillating the surface of the bath vertically (frequency from 20 Hz to 400 Hz), the droplet bounces on the interface [1,2]. A low viscous oil ... [more ▼]

Droplet coalescence in a liquid bath can be delayed by oscillating the surface of the bath vertically (frequency from 20 Hz to 400 Hz), the droplet bounces on the interface [1,2]. A low viscous oil droplet is dropped on a high viscous oil bath. We observe that the conditions for bouncing depends on the frequency, more precisely we observe resonance when the eigenfrequency of the droplet is excited. In some conditions, droplet presents a non axi-symmetric mode of deformation. That leads to a rotation of the drop and to a horizontal displacement. [less ▲]

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See detailThe amazing bouncing droplet
Terwagne, Denis ULg; Dorbolo, Stéphane ULg; Vandewalle, Nicolas ULg et al

Poster (2008, November)

When a low viscosity oil droplet is laid onto the surface of a high viscosity oil liquid, it stays at rest for a moment before coalescence. The coalescence can be delayed and sometimes inhibited by ... [more ▼]

When a low viscosity oil droplet is laid onto the surface of a high viscosity oil liquid, it stays at rest for a moment before coalescence. The coalescence can be delayed and sometimes inhibited by injecting fresh air under the droplet. This can happen when the surface of the bath oscillates vertically. In this case the droplet basically bounces on the interface [1, 2]. We observe that the conditions for bouncing depends on the frequency, more precisely we observe resonance when the eigenfrequency of the droplet is excited. Lord Rayleigh expressed the droplet deformation modes in terms of spherical harmonics Y m. We present different l experimental mode of deformation with the corresponding spherical harmonic model. In some conditions, a droplet presents a non axi-symmetric mode of deformation. That leads to a rotation of the droplet and to a horizontal displacement. [less ▲]

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Peer Reviewed
See detailA new iterative approach to the corrective security-constrained optimal power flow problem
Capitanescu, Florin ULg; Wehenkel, Louis ULg

in IEEE Transactions on Power Systems (2008), 23(4), 1342-1351

This paper deals with techniques to solve the corrective security-constrained optimal power flow (CSCOPF) problem. To this end, we propose a new iterative approach that comprises four modules: a CSCOPF ... [more ▼]

This paper deals with techniques to solve the corrective security-constrained optimal power flow (CSCOPF) problem. To this end, we propose a new iterative approach that comprises four modules: a CSCOPF which considers only a subset of potentially binding contingencies among the postulated ones, a (steady-state) security analysis (SSSA), a contingency filtering (CF) technique, and an OPF variant to check post-contingency state feasibility when taking into account post-contingency corrective actions. We compare performances of our approach and its possible variants with classical CSCOPF approaches such as the direct approach and Benders decomposition (BD), on three systems of 60, 118, and 1203 buses. [less ▲]

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See detailChirurgue Bariatrique. morbi-mortalité chez les patients diabétiques.
RADERMECKER, Régis ULg

in Diabétologie Pratique (2008), 22

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See detailcarnet de pédiatrie en Afrique: Eléments d'endocrinologie périnatale
Battisti, Oreste ULg

Learning material (2008)

this presentation concerns practical aspects of hypo- and hyperthyroidism, and insulinic diabetes in the perinatal and neonatal periods

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See detailIntervention cognitive auprès d'enfants cancéreux
Badot, Isabelle; Missotten, Pierre ULg; Etienne, Anne-Marie ULg

Conference given outside the academic context (2008)

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Peer Reviewed
See detailFirst Report of Fusarium Head Blight (FHB) on Winter Wheat in the Grand Duchy of Luxembourg
Giraud, Frédéric; Vrancken, Carine; Delfosse, Philippe et al

in Plant Disease (2008), 92

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See detailConfidentiality and Third Parties in International Commercial Arbitration : Some Preliminary Reflections
Wautelet, Patrick ULg

in Caprasse, Olivier (Ed.) L'arbitrage et les tiers (2008, November)

This paper seeks to review first if there exists a duty of confidentiality in international commercial arbitation and, if yes, what it its scope, nature and limitations. Drawing from this first analysis ... [more ▼]

This paper seeks to review first if there exists a duty of confidentiality in international commercial arbitation and, if yes, what it its scope, nature and limitations. Drawing from this first analysis, this paper also reviews the strenght of the confidentiality argument in relationship with third parties. To that end, the paper examines various scenarios in which third parties may be faced with arbitration proceedings. In order to resolve the difficulties caused by a possible confidentiality duty resting upon the parties, the arbitrators or other parties, the paper reviews various solutions, drawing upon contract law and private international law. [less ▲]

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See detailMéthodes de gestion des principales plantes invasives en zones humides - 1 ère partie
Pieret, Nora; Delbart, Emmanuel ULg; Vanderhoeven, SONIA ULg et al

in Silva Belgica (2008)

Detailed reference viewed: 69 (6 ULg)
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See detailRegulation of an Open Access Essential Facility
Gautier, Axel ULg; Mitra, Manipushpak

in Economica (2008), 75

A vertically integrated firm owns an essential input and operates on the downstream market. There is a potential entrant in the downstream market. Both firms use the same essential input. The regulator’s ... [more ▼]

A vertically integrated firm owns an essential input and operates on the downstream market. There is a potential entrant in the downstream market. Both firms use the same essential input. The regulator’s objectives are (i) to ensure financing of the essential input and (ii) to generate competition in the downstream market. The regulatory mechanism grants non-discriminatory access of the essential facility to the entrant provided it pays a two-part tariff to the incumbent. The optimal mechanism generates inefficient entry. The inefficient entry captures the trade-off between market efficiency and infrastructure financing resulting from incomplete information and non-discriminatory access. [less ▲]

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See detailEnjeux et conflits autour de la mobilisation du passé dans les régimes démocratiques
Grandjean, Geoffrey ULg

Conference (2008, November)

This presentation aims to show some stakes and conflicts when past is mobilized in democracies

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See detailAnnotation of Gerald Gaylard's "Mastering Arachnophobia: The Limits of Self-Reflexivity in African Fiction"
Tunca, Daria ULg

in Routledge Annotated Bibliography of English Studies (2008)

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See detailAn introduction to thermodynamics applied to Organic Rankine Cycles
Quoilin, Sylvain ULg

E-print/Working paper (2008)

This working paper is divided into two parts. The first part provides a reminder and theoritical background in fluid thermodynamics (first law, second law, ideal/real gases, liquids, thermodynamic ... [more ▼]

This working paper is divided into two parts. The first part provides a reminder and theoritical background in fluid thermodynamics (first law, second law, ideal/real gases, liquids, thermodynamic processes). The second part applies the theory to the study of a simple Organic Rankine Cycle, by modeling the 4 main processes (pumping, evaporation, expansion, condensation). [less ▲]

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See detailCertificates of linear mixed integer infeasibility
Andersen, Kent; Louveaux, Quentin ULg; Weismantel, Robert

in Operations Research Letters (2008), 36(6), 734-738

We derive a certificate of integral infeasibility for linear systems with equations and inequalities by generating algebraically an outer description of a lattice point free polyhedron that contains the ... [more ▼]

We derive a certificate of integral infeasibility for linear systems with equations and inequalities by generating algebraically an outer description of a lattice point free polyhedron that contains the given integer infeasible system. The extension to the mixed integer setting is also derived. [less ▲]

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See detailL'image du mois. La polykystose rénale autosomique dominante
Couvreur, Thierry ULg; Szepetiuk, G.; Meunier, Paul ULg et al

in Revue Médicale de Liège (2008), 63(11), 637-639

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See detailA bootstrap method for comparing correlated kappa coefficients
Vanbelle, Sophie ULg; Albert, Adelin ULg

in Journal of Statistical Computation & Simulation (2008), 78(11), 1009-1015

Cohen’s kappa coefficient is traditionally used to quantify the degree of agreement between two raters on a nominal scale. Correlated kappas occur in many settings (e.g., repeated agreement by raters on ... [more ▼]

Cohen’s kappa coefficient is traditionally used to quantify the degree of agreement between two raters on a nominal scale. Correlated kappas occur in many settings (e.g., repeated agreement by raters on the same individuals, concordance between diagnostic tests and a gold standard) and often need to be compared. While different techniques are now available to model correlated κ coefficients, they are generally not easy to implement in practice. The present paper describes a simple alternative method based on the bootstrap for comparing correlated kappa coefficients. The method is illustrated by examples and its type I error studied using simulations. The method is also compared with the generalized estimating equations of the second order and the weighted least-squares methods. [less ▲]

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See detailRapport benefice/risque des endoprotheses coronaires pharmaco-actives. 2ème partie : analyse dans la population diabétique
Nyssen, Astrid ULg; Legrand, Victor ULg; Scheen, André ULg

in Revue Médicale de Liège (2008), 63(11), 654-661

The diabetic patient is at high risk of coronary heart disease. He/she can benefit of revascularisation procedures, even if he/she is exposed to a higher incidence of complications after a coronary artery ... [more ▼]

The diabetic patient is at high risk of coronary heart disease. He/she can benefit of revascularisation procedures, even if he/she is exposed to a higher incidence of complications after a coronary artery bypass graft or a percutaneous transluminal coronary angioplasty. The use of drug-eluting stents — paclitaxel (PES) or sirolimus (SES) — dramatically reduces the risk of restenosis as compared to bare-metal stents; nevertheless, the rate of restenosis remains almost double in diabetic patients compared to that observed in non-diabetic subjects. However, the risk of (very) late thrombosis is higher with drug-eluting stents than with bare-metal stents, in the diabetic population as in the non-diabetic population. Altogether, among diabetic patients, the incidence of major cardiovascular events is significantly reduced with drug-eluting stents. This global clinical benefit essentially results from a diminution of revascularisation procedures rather than from a reduction of myocardial infarcts or cardiovascular deaths. Comparison between SES and PES gives discordant results. Indeed, while the loss of intra-stent lumen is more important with PES than with SES, PES are associated with a lower rate of major cardiovascular events than SES. Efficacious antiplatelet therapy in the long run is mandatory in all diabetic patients treated with drug-eluting stents [less ▲]

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See detailLa vignette thérapeutique de l'étudiant. Choix médicamenteux influencés par les comorbidités connues et nouvellement diagnostiquées chez un patient à risques multiples
Scheen, André ULg

in Revue Médicale de Liège (2008), 63(11), 688-692

RÉSUMÉ : Le patient obèse souffrant de gonarthrose, d’hypertension artérielle, de diabète de type 2, d’hyperuricémie, de dyslipidémie mixte et d’insuffisance rénale modérée est fréquemment rencontré dans ... [more ▼]

RÉSUMÉ : Le patient obèse souffrant de gonarthrose, d’hypertension artérielle, de diabète de type 2, d’hyperuricémie, de dyslipidémie mixte et d’insuffisance rénale modérée est fréquemment rencontré dans la pratique médicale. Outre les mesures hygiéno-diététiques, la prise en charge optimale de ce type de patient impose le recours à une polymédication dont le choix doit tenir compte des synergies pharmacologiques pour garantir la meilleure protection possible, mais aussi des éventuelles contre-indications imposées par la présence des comorbidités ou encore le risque d’interférences médicamenteuses. [less ▲]

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See detailLe médicament du mois. L'insuline
Radermecker, Régis ULg; Scheen, André ULg

in Revue Médicale de Liège (2008), 63(11), 688-692

L’insuline asparte biphasique NovoMix® 50 est une nouvelle insuline prémixée comprenant 50 % de l’analogue ultra-rapide asparte et 50 % d’insuline asparte protaminée cristallisée. Cette insuline offre ... [more ▼]

L’insuline asparte biphasique NovoMix® 50 est une nouvelle insuline prémixée comprenant 50 % de l’analogue ultra-rapide asparte et 50 % d’insuline asparte protaminée cristallisée. Cette insuline offre, par rapport à l’insuline NovoMix® 30, un meilleur contrôle de l’hyperglycémie post-prandiale grâce à une plus forte proportion d’insuline ultra-rapide. Une autre préparation, appelée NovoMix® 70, complète la gamme de NovoNordisk et sera bientôt commercialisée en Belgique. Ces insulines prémixées peuvent être utilisées en une seule (rarement), en deux (classiquement) ou en trois (de plus en plus fréquemment, à savoir avant les 3 repas principaux) injections sous-cutanées par jour. Elles sont utilisées dans le traitement du diabète de type 2, éventuellement en association avec la metformine. Ces insulines sont présentées sous forme de cartouches Penfill de 3 ml pour stylo NovoPen®. La mise à disposition du corps médical de préparations insuliniques prémixées contenant des proportions variables d’un analogue de l’insuline à action ultra-rapide et d’insuline intermédiaire offre une plus grande flexibilité et permet de sélectionner, en fonction du moment de la journée, les préparations insuliniques qui permettent d’assurer la meilleure couverture prandiale et basale, tout en limitant le risque hypoglycémique. [less ▲]

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