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See detailLève-toi et entreprends !...
Choffray, Jean-Marie ULg

E-print/Working paper (2011)

Quelques pistes de réflexion pour faire face, avec solidarité, créativité, intelligence, et détermination, aux défis humains et économiques que pose la reconversion industrielle d'ArcelorMittal.

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See detailClinical characterization of cabergoline resistant prolactinomas : a multicenter experience on 92 patients
VROONEN, Laurent ULg; Jaffrain-Rea, M. L.; PETROSSIANS, Patrick ULg et al

in ENEA Munich - abstract book (2011, December)

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See detailLes conséquences de la marchandisation de l’arganier sur la vie socio-économique et culturelle à Haha
Aziz, Larbi; Elharousse, L; Mormont, Marc ULg et al

in Actes du premier Congrès International de l'Arganier (2011, December)

Arbre à usages multiples, l’arganier est aussi à multifonctions : économique, sociale et environnementale. Il était, et il est encore, un élément important du système agraire local et participe au ... [more ▼]

Arbre à usages multiples, l’arganier est aussi à multifonctions : économique, sociale et environnementale. Il était, et il est encore, un élément important du système agraire local et participe au maintien d’une biodiversité particulière. Comme il a toujours configuré et rythmé la vie des populations de l’arganeraie puisqu’il était (ou l’un de ses produits) toujours présent dans leurs activités culinaires, festives ou socioculturelles. Cependant, l’augmentation rapide du prix de l’huile d’argan a engendré de multiples conséquences sur la vie socioéconomique et culturelle de ces populations. En fait, la marchandisation de l’huile d’argan a eu à la fois des retombées positives et des effets négatifs sur tout l’écosystème. Pour comprendre et analyser ces évolutions et les nouvelles dynamiques locales qui s’y développent, nous avons réalisé une étude dans la zone de Haha, région d’Essaouira, en prenant comme cas les deux communes rurales d’Aguerd et de Tidzi. Ce qui nous a permis, en plus de l’analyse historique, de comparer les dynamiques qui sont en cours au niveau de ces deux communes rurales. [less ▲]

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See detailLe médicament du mois, SEVIKAR/HCT° : association d'un antagoniste calcique (bésylate d'amlodipine), d'un inhibiteur des récepteurs de l'angiotensine II (olmésartan médoxomil) et d'un diurétique thiazide (hydrochlorothiazide)
Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2011), 66(12), 636-642

Hypertension is a common treatable risk factor for cardiovascular disease. Even when identified and treated, most patients with hypertension do not reach the blood pressure goal and they often need in ... [more ▼]

Hypertension is a common treatable risk factor for cardiovascular disease. Even when identified and treated, most patients with hypertension do not reach the blood pressure goal and they often need in fact three antihypertensive agents to achieve blood pressure control. Although various combinations of two therapies are currently available for the treatment of hypertension, development of more powerful therapies with 3 molecules is necessary to control more hypertensive patients. Amlodipine/Olmesartan/hydrochlorothiazide (Sevikar/HCT°) is a new triple combination of antihypertensive agents that lower blood pressure via calcium channel blockade, angiotensin receptor blockade and diuretic action. Its potent triple mechanism of action is also likely to attenuate compound-specific adverse events, such as amlodipine-related peripheral oedema or sartan-induced hyperkalemia. Moreover, by reducing the number of pills to be taken every day, the compliance should be better. Currently available data show that such a combination is very powerful and well-tolerated allowing more patients with all grades of hypertension (especially those with the most severe forms) to reach the blood pressure target. The contraindications are those of each compound. [less ▲]

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See detailEffects of hydrogen partial pressure on fermentative biohydrogen production by a chemotropic Clostridium bacterium in a new horizontal rotating cylinder reactor
Beckers, Laurent ULg; Hiligsmann, Serge ULg; Hamilton, Christopher ULg et al

Poster (2011, December)

The fermentative production of hydrogen using chemotrophic anaerobic bacteria offers a new way to produce “green” energy from a large variety of renewable resources and organic wastes. In order to produce ... [more ▼]

The fermentative production of hydrogen using chemotrophic anaerobic bacteria offers a new way to produce “green” energy from a large variety of renewable resources and organic wastes. In order to produce hydrogen at high yields and production rates, efficient bioreactors must be designed. A new reactor called “horizontal rotating cylinder bioreactor” allows the production of biohydrogen from glucose with the selected Clostridium sp. strain at high yields (1,9molH2·molglucose-1) and production rates (48,6mmolH2·lmilieu-1.molhexose-1·h-1). The rotative cylinder where the bacteria are fixed enables efficient gas transfer (mainly hydrogen) from the liquid phase where it is produced by the bacteria. This is an important way to allow the bacteria metabolism to shift in a fermentation pathway that produces more hydrogen. This was confirmed by varying the total pressure in the bioreactor. An increase of the total pressure 0,18bar lowered the yields of 19,5% while a decrease of 0,11bar increased the yields of 7%. Our work concludes the importance of providing good liquid to gas transfers in the biohydrogen-producing reactors in order to reach higher yields and production rates. [less ▲]

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See detailRelaxation schemes for min max generalization in deterministic batch mode reinforcement learning
Fonteneau, Raphaël ULg; Ernst, Damien ULg; Boigelot, Bernard ULg et al

in 4th International NIPS Workshop on Optimization for Machine Learning (OPT 2011) (2011, December)

We study the min max optimization problem introduced in [Fonteneau, 2011] for computing policies for batch mode reinforcement learning in a deterministic setting. This problem is NP-hard. We focus on the ... [more ▼]

We study the min max optimization problem introduced in [Fonteneau, 2011] for computing policies for batch mode reinforcement learning in a deterministic setting. This problem is NP-hard. We focus on the two-stage case for which we provide two relaxation schemes. The first relaxation scheme works by dropping some constraints in order to obtain a problem that is solvable in polynomial time. The second relaxation scheme, based on a Lagrangian relaxation where all constraints are dualized, leads to a conic quadratic programming problem. Both relaxation schemes are shown to provide better results than those given in [Fonteneau, 2011]. [less ▲]

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See detailImagerie motrice après fracture de l'extrémité distale du radius
BERNARD, Bénédicte ULg; LHOEST, C.; Foidart-Dessalle, Marguerite ULg et al

in Chirurgie de la Main (2011, December), 30(6), 477

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See detailOne-dimensional time-dependent model of cardiac pacemaker activity generated by mechano-electric feedback in a thermo-electro-mechanical context
Collet, Arnaud ULg; Dauby, Pierre ULg

in Archives des Maladies du Coeur et des Vaisseaux. Pratique (2011, December), (Hors-série 3), 20

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See detailIntegration of quality indices of distribution in benchmarking analysis
Coelli, Tim; Gautier, Axel ULg; Perelman, Sergio ULg et al

Report (2011)

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See detailUtilisation des composts de biodéchets ménagers pour l'amélioration de la fertilité des sols acides de la province de Kinshasa (République Démocratique du Congo)
Mulaji Kyela, Crispin ULg

Doctoral thesis (2011)

This work is part of the research for appropriate methods for sustainable management of the sandy soils of the province of Kinshasa (Democratic Republic of Congo), in order to ensure and guarantee the ... [more ▼]

This work is part of the research for appropriate methods for sustainable management of the sandy soils of the province of Kinshasa (Democratic Republic of Congo), in order to ensure and guarantee the adequate food security. It consists of a scientic research of the use of composts produced from household organic waste in improving the quality of sandy soils to the province of Kinshasa. The general objective pursued in this work is to evaluate the impact of four repeated applications of organic matter from bio-waste compost on chemical and biochemical parameters dynamics in acid sandy soils and their productivity. A pilot composting on a small scale has been installed for the production of composts from municipal solid waste and characterization of composts obtained has revealed the agronomic potential that presents this material. The diagnosis of the condition agropedological soils revealed that soils of the three study sites are sandy classified as rubics arenoferrasols (dystrics), have excellent physical conditions for drainage, air circulation and root penetration possess variables charges colloids, show an acid reaction, low organic matter and low nutrient minerals contents. In addition, their water and nutrients retentions capacity are very limited, and are the main soil constraints to agricultural productivity of these soils. After four growing seasons in real environments, the study of the reaction with the soil organic amendments (20, 40, 60 t.ha-1 MB) gave satisfactory results. The provision of continuous additions of organic composts significantly increased the values of pH, TOC, CEC, SB eff and reduced the rate of exchangeable Al saturation in the three sites. With the highest dose T3 (60 t.ha-1 MB), the pH increased at least 0.8 units and the carbon content multiplied by 2.5 to 3 on the three sites. CEC values increased from 3.3 to 5.02 cmol(+)mg.kg-1 and the toxic aluminum saturation decreased more effective than 90%. Regarding biochemical parameters (microbial carbon & nitrogen, RB, RIS, APA, Unt, Ut), compost treatments induced a significant improvement in function and doses applied throughout the experiment. These contributions have induced microbial activity which contributed to the increase in soil nutrients (N, P, ...) by microbiological activities. The availability of nutrients and fourniture of carbon by the composts explain these increases. In addition, yields on different test plants (Glycine max L. Merr, Arachis hypogaea L. and Hibiscus sabbariffa L.) were positively influenced by the treatments of organic composts household wastes. Compared with mineral fertilizers, their fertilizing potential is not negligible. According to the results observed, doses ≥ 40 t.ha MB-1 should be to keep and maintain an acceptable level of fertility and yields potentiel of crops. But low doses were more efficient than high doses of agronomic point of view. Doses ≤ 20 t.ha-1 MB are recommended in annual crop and regular. Phosphorus was found to be the most limiting element to agricultural production of soil sites studied whatever of the types of amendments and cultures used. Finally, the study indicates that for reasons of efficiency, availability and funds increased production may be obtained through synergy between the composts used in small quantities and fertilizer mineral supplements. [less ▲]

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See detailAURALIAS: an audio-immersive system for auralizing room acoustics projects
Embrechts, Jean-Jacques ULg

Conference (2011, December)

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See detailThe Economic and Statistical Designs of Control charts for Censored and Non-Normal Data
Faraz, Alireza ULg; Heuchenne, Cédric ULg; Davis, Darwin, Edward et al

Scientific conference (2011, December)

In this research, we are dealing with constructing the statistical design (SD) and economic statistical design (ESD) of Shewhart and CUSUM control charts for reliability data which are right censored ... [more ▼]

In this research, we are dealing with constructing the statistical design (SD) and economic statistical design (ESD) of Shewhart and CUSUM control charts for reliability data which are right censored. This is the case which happens more frequently in the field. [less ▲]

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See detailLa liaison externe en gériatrie : état des lieux de la collaboration entre médecins généralistes et gériatres
Ketterer, Frédéric ULg; Goffin, Yves; Garroi, Ludivine et al

Report (2011)

L’objet de l’étude présentée ici consistait à voir comment la collaboration entre médecins généralistes et gériatres peut être conçue autour de la personne âgée, pour maintenir cette dernière dans son ... [more ▼]

L’objet de l’étude présentée ici consistait à voir comment la collaboration entre médecins généralistes et gériatres peut être conçue autour de la personne âgée, pour maintenir cette dernière dans son milieu de vie. Il y est question d’avoir un référent spécialiste lorsque la dimension gériatrique de la prise en charge s’exprime avec acuité. Dès lors, l’étude cherchait à cerner comment les médecins généralistes conçoivent cette collaboration avec les gériatres pour leurs patients âgés à domicile et en maison de repos, quels sont les atouts et contraintes de la première ligne de soins, ainsi que les pistes sur lesquelles s’appuyer pour concevoir une collaboration efficace et efficiente. [less ▲]

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See detailSynergistic interaction of the triple combination of amphotericin B, ciprofloxacin, and polymorphonuclear neutrophils against Aspergillus fumigatus.
STERGIOPOULOU, Theodouli ULg; Meletiadis, Joseph; Sein, Tin et al

in Antimicrobial Agents and Chemotherapy (2011), 55(12), 5923-9

Aspergillus is damaged by polymorphonuclear neutrophils (PMNs) by means of nonoxidative and oxidative mechanisms, which may be affected by antifungal and antibacterial agents that patients with invasive ... [more ▼]

Aspergillus is damaged by polymorphonuclear neutrophils (PMNs) by means of nonoxidative and oxidative mechanisms, which may be affected by antifungal and antibacterial agents that patients with invasive pulmonary aspergillosis often receive. The pharmacodynamic interactions among deoxycholate amphotericin B (AMB), ciprofloxacin (CIP), and human PMNs against Aspergillus fumigatus growth are unknown. We therefore studied the interactions between 0.032 to 2.0 mug/ml of AMB, 0.1 to 50 mug/ml of CIP at a fixed AMB/CIP ratio of 1:3.125, and PMNs from six donors at an effector-to-target (E:T) ratio of 400:1 against a clinical A. fumigatus isolate using an XTT metabolic assay and the Bliss independence pharmacodynamic-interaction model. CIP exhibited no antifungal activity alone or in combination with PMNs. Synergy was found between AMB and PMNs, with interaction indices (II) of 0.06 to 0.21; the highest interaction of 21% +/- 3.6% was observed at 0.22 +/- 0.09 mug/ml of AMB. The AMB and CIP (AMB+CIP) combination was synergistic (II = 0.39) at low AMB concentrations and antagonistic (II = 1.39) at high AMB concentrations, with a maximal synergistic interaction of 16% +/- 3.7% observed at 0.16 +/- 0.08 mug/ml of AMB. The triple combination AMB+CIP+PMNs was synergistic, with interaction indices of 0.05 to 0.20, and a maximal synergistic interaction of 24% +/- 4% was observed at 0.20 +/- 0.07 mug/ml of AMB. The increased percentage of Bliss synergy of the triple combination AMB+CIP+PMNs (24% +/- 4%) was the product of those of the constituent double combinations AMB+PMNs (21% +/- 3.6%) and AMB+CIP (16% +/- 3.7%). Thus, the antifungal activity of AMB, at clinically relevant concentrations, was enhanced in combination with PMNs and CIP against A. fumigatus growth in a concentration-dependent manner. [less ▲]

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See detailIntegration of quality indices of distribution in benchmarking analysis
Coelli, Tim; Gautier, Axel ULg; Perelman, Sergio ULg et al

Report (2011)

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See detailThe Future of Public Enterprises: Contributions to a new Discourse
Fecher-Bourgeois, Fabienne ULg; Florio, Massimo

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (2011), 82(4), 361-373

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See detailState Reconstruction from Synchronized Phasor Measurements
Glavic, Mevludin; Van Cutsem, Thierry ULg

in Proceedings of the IEEE PES Innovative Smart Grid Technologies Europe 2011 (2011, December)

The traditional state estimator relies on measurements affected by time skew and, while the whole system can be made observable, it cannot track the post-disturbance dynamics. Synchronized phasor ... [more ▼]

The traditional state estimator relies on measurements affected by time skew and, while the whole system can be made observable, it cannot track the post-disturbance dynamics. Synchronized phasor measurements, on the other hand, can track those dynamics but, in a foreseeable future, they will be available in scarce configurations that do not allow estimating the whole system state. State reconstruction precisely aims at using the available phasor measurements to track the evolution of the power system - at least in a region of interest - in between two runs of a traditional state estimator. It minimizes under constraints a weighted least square objective involving both the phasor measurements and bus power pseudo-measurements relative to a reference state. The placement of phasor measurement units at the generator buses is recommended for accuracy. Tests are reported with phasor measurements obtained from time simulation of post-disturbance system evolution. The results deal with the effect on accuracy of the relative weights assigned to phasor and pseudo-measurements, the benefit of taking the reference bus powers from the last reconstructed instead of the pre-disturbance state, and the rate of the state reconstructions. [less ▲]

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See detailPure species of grass discrimination with the help of hyperspectral imaging NIR
Dale, Laura ULg; Rotar, Ioan; Bogdan, Anca Dorina et al

in Agronomy Series of Scientific Research = Lucrari Stiintifice Seria Agronomie (2011, December), 54(2), 23-27

The possibilities to discriminate with hyperspectral imaging system, SWIR ImSpector N25E in grass mixtures of the pure species Festuca rubra L., Trifolium repens L., Agrostis capillaris L., Hieracium ... [more ▼]

The possibilities to discriminate with hyperspectral imaging system, SWIR ImSpector N25E in grass mixtures of the pure species Festuca rubra L., Trifolium repens L., Agrostis capillaris L., Hieracium aurantiacum L., Arnica montana L.was the objective of this study. All the samples were collected from natural meadows, from the National Apuseni Park, Apuseni Mountains, from Gârda area. The samples were naturally dried then prepared using the protocol for NIRS analyze. The model built with PLS–DA, was used to demonstrate wether the classes discrimination between pure species is possible or not. The goal of this study was to see in other images if the pure species are or are not recognized according to the spectral data base. The potential of using the Hyperspectral Imaging NIR (Camera NIR) to discriminate or to identify pure species was confirmed. For this technique the MatLab program was used .A percentage of more than 96% correct prediction for species discrimination was obtained. This study should drive to a more important point, which is to verify whether the toxic species are or are not used as food for animals in the natural meadows. The floristic composition of a meadow can be determined only if we have in the data base, dates for each identified species, as being part of the mix. [less ▲]

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See detailDroit international privé notarial
Wautelet, Patrick ULg

Learning material (2011)

Ce document reprend les supports de présentation utilisés dans le cadre du cours consacré aux aspects de droit international privé notarial (2011-2012). Les thèmes choisis (régimes matrimoniaux ... [more ▼]

Ce document reprend les supports de présentation utilisés dans le cadre du cours consacré aux aspects de droit international privé notarial (2011-2012). Les thèmes choisis (régimes matrimoniaux, successions, donations et circulation de l'acte notarié) sont présentés sous forme de cas pratiques. [less ▲]

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