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See detailLaisse tomber le C8 ... je pars au Chili! (2)
Nazé, Yaël ULg

Article for general public (2002)

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See detailCampagne de mesure des odeurs sur le CET d'Hallembaye. Estimation des nuisances olfactives et ajustement de la méthodologie
Nicolas, Jacques ULg; Perez, Emmanuel

Report (2002)

The study is made in the frame of a follow-up monitoring of all landfill sites in Wallonia, initiated by the Ministry of Environment and managed by ISSeP. The research group applied a field inspection ... [more ▼]

The study is made in the frame of a follow-up monitoring of all landfill sites in Wallonia, initiated by the Ministry of Environment and managed by ISSeP. The research group applied a field inspection technique based on the perception of a panel of experts sniffing the air around the region of interest and trying to delineate the odour plume. In a second step, the recorded meteorological data are entered into an atmospheric dispersion model and the odour emission rate of the facility is adjusted until the predicted odour impact zone fits about exactly the one which is measured in the field. The present report concern the site of Hallembaye. [less ▲]

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See detailLe développement durable
Debouche, Charles ULg

Conference given outside the academic context (2002)

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See detailEpstein-Barr virus in Hodgkin's disease: the example of central Tunisia
Korbi, S.; Trimeche, M.; Sriha, B. et al

in Annales de Pathologie (2002), 22(2), 96-101

The purpose of this study was to evaluate the prevalence of Epstein-Barr virus in Hodgkin disease in Tunisia through a series of 77 cases. Association with Epstein-Barr virus was demonstrated by Epstein ... [more ▼]

The purpose of this study was to evaluate the prevalence of Epstein-Barr virus in Hodgkin disease in Tunisia through a series of 77 cases. Association with Epstein-Barr virus was demonstrated by Epstein-Barr encoded early RNA transcripts (EBER) in situ hybridization in 70 % of cases and by latent membrane protein I (LMPI) immunohistochemistry in 58.4 % of cases. EBER positive cases were more frequent in extreme age clashes (< 15 and > 54 years) there was no correlation with sex, histologic sub-type and clinical stage. Our findings show a high prevalence for EBV infection in Tunisian Hodgkin's disease particularly among extreme ages. [less ▲]

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See detailChantier n° 1 : Les structures du sport
Cloes, Marc ULg

in Communauté française (Ed.) Les Chantiers du sport. Ensemble construisons le sport (2002)

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See detailLong-term elasticity in the continental lithosphere; Modelling the Aden Ridge Propagation and the Anatolian Extrusion Process
King, J; Hubert, Aurelia ULg

in Geophysical Research Abstracts (2002, April), 4

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See detailBiometry and paleoenvironment of Retispora lepidophyta (Kedo) Playford 1976 and associated miospores in the latest Famennian nearshore marine facies, eastern Ardenne (Belgium)
Maziane, N.; Higgs, K. T.; Streel, Maurice ULg

in Review of Palaeobotany and Palynology (2002), 118(1-avr Sp. Iss. SI), 211-226

The size diameter of Retispora lepidophyta, a stratigraphically important miospore, is reexamined in greater detail than in previous studies using three sections of the latest Famennian nearshore marine ... [more ▼]

The size diameter of Retispora lepidophyta, a stratigraphically important miospore, is reexamined in greater detail than in previous studies using three sections of the latest Famennian nearshore marine facies of the eastern Ardenne. The evolutionary character of the size reduction with time is confirmed and is used for accurate correlations between the three sections. Cluster analyses (dendrograms) are performed on the percentages of a selection of miospore species from the two most complete sections and show a clear analogy in the lateral distribution of R. lepidophyta and Vallatisporites hystricosus, a species known elsewhere (West Virginia, USA) to belong to coastal 'downstream' near-swamp plant communities [Streel and Scheckler, Rev. Palaeobot. Palynol. 64 (1990) 315-324]. By comparison also with the West Virginia data, three Diducites species are believed to represent the 'coal' swamp vegetation. A decrease in the proportion of the Diducites species from the lower to the upper portion of the studied sections is observed. Using biometric analysis, high resolution correlation between these sections reveals a lateral shift of facies with time during the latest Famennian in the eastern Ardenne. Local synsedimentary block-faulting processes were probably responsible. (C) 2002 Elsevier Science B.V. All rights reserved. [less ▲]

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See detailEtude electromyographique paravertebrale dorso-lombaire. Analyse en mode multi-MUP et etablissement de normes au sein d'une population de reference
Tomasella, Marco ULg; Crielaard, Jean-Michel ULg; Wang, F. C.

in Neurophysiologie Clinique = Clinical Neurophysiology (2002), 32(2), 109-17

OBJECTIVE: The aim of this study was to contribute to draw up reference values relating to electromyographic (EMG) parameters in dorsal and lumbar paraspinal muscles. MATERIALS AND METHODS: 75 healthy ... [more ▼]

OBJECTIVE: The aim of this study was to contribute to draw up reference values relating to electromyographic (EMG) parameters in dorsal and lumbar paraspinal muscles. MATERIALS AND METHODS: 75 healthy subjects without back pain underwent electromyography of multifidus bundles, which are innervated uni-segmentally by the dorsal ram of the spinal nerve. T8, L3, L4, L5 and S1 myotomes were systematically explored. Output variables were spontaneous denervation activity and quantitative EMG data obtained by multi-MUP (Motor Unit action Potential) analysis. RESULTS: No abnormal insertional or spontaneous activity (such as fibrillation, positive sharp waves or fasciculation) was recorded at rest. Neither sex nor age influenced motor unit action potential features in our series. Reference values were drawn up for T8 and L5 segmental levels using the mean values of 20 motor unit potentials in each patient studied, the reference interval being defined by the lower and the upper outlier limits on individual values. CONCLUSION: This study offers reference data to electromyographers to help better identifying possible myogenic or neurogenic pathological changes, especially in lumbosacral radiculopathies. [less ▲]

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See detailDetermination of the singlet oxygen quantum yield of bacteriochlorin a: a comparative study in phosphate buffer and aqueous dispersion of dimiristoyl-L-a-phosphatidylcholine liposomes
Hoebeke, Maryse ULg; Damoiseau, Xavier

in Photochemical & Photobiological Sciences (2002), 1(4), 283-287

The production of singlet oxygen (1O2) by bacteriochlorin a (BCA) was studied in phosphate buffer and in dimyristoyl-L-α-phosphatidylcholine (DMPC) unilamellar liposomes. The comparative method used to ... [more ▼]

The production of singlet oxygen (1O2) by bacteriochlorin a (BCA) was studied in phosphate buffer and in dimyristoyl-L-α-phosphatidylcholine (DMPC) unilamellar liposomes. The comparative method used to measure 1O2 production was a quantitative analysis of photooxidation reactions leading to the loss of absorbance of the water-soluble specific probe: anthracene 9,10-dipropionic acid. Rose Bengal, whose 1O2 quantum yield (ΦRB) is well known in alcohols and phosphate buffer, was used as the standard for the quantification of the BCA singlet oxygen production. Our results confirm quantitatively that solubilization of BCA in liposomes leads to an increase in 1O2 production. Indeed, the quantum yield of 1O2 production by BCA (ΦBCA) is 0.05 in phosphate buffer and 0.33 in DMPC liposomes. Furthermore, the diffusion characteristics of 1O2 produced by BCA bound to liposome were also examined using the isotopic lifetime enhancement effect of D2O. It was shown that 1O2 spent at least 70% of its lifetime in the vesicular environment [less ▲]

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See detailFull-scale tests of torsional damper and detuner (TDD) antigalloping device
Lilien, Jean-Louis ULg; Vinogradov, Alexander

in IEEE Transactions on Power Delivery (2002), 17(2), 638-643

A new antigalloping device for overhead lines with bundle conductors was introduced ten years ago, after laboratory tests and observations on actual 400-kV lines. A systematic fullscale test was performed ... [more ▼]

A new antigalloping device for overhead lines with bundle conductors was introduced ten years ago, after laboratory tests and observations on actual 400-kV lines. A systematic fullscale test was performed in Kazakhstan in order to better evaluate torsional damper and detuner (TDD) efficiency. This report details the test station and the results obtained over a several month period of testing and measurement. The tests were carried out thanks to the mutual efforts of the ESSP and the Kazakh Power Research Institute (KazNIIE) at the field tests stand located in Chokpar. [less ▲]

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See detailA real-time operational procedure for GPS TEC based reconstruction of the electron profile at a single ionosonde location
Stankov, Stanimir; Warnant, René ULg; Jodogne, Jean-Claude

in Geophysical Research Abstracts (2002, April), 4(ABS No. EGS02-A-05554),

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See detailClinique et cytologie sputaire de l'asthme intrinseque
Bettiol, J.; Radermecker, Maurice ULg; Louis, Renaud ULg

in Revue Médicale de Liège (2002), 57(4), 223-7

The diagnosis of intrinsic asthma is evoked in patients with clinical criteria of asthma but, who contrarily to atopic asthmatics, lack history of allergy, specific IgE and skin positive reaction towards ... [more ▼]

The diagnosis of intrinsic asthma is evoked in patients with clinical criteria of asthma but, who contrarily to atopic asthmatics, lack history of allergy, specific IgE and skin positive reaction towards common aeroallergens of the environment. While the bronchial cytology of these two types of asthma is comparable, the immunological mechanisms of intrinsic asthma remain poorly understood because the factors responsible for the bronchial inflammation are unknown. Intrinsic asthma normally begins in adulthood and carries often a more severe prognosis. This disease is more frequent in women and is often associated to nasal polyposis and/or aspirin hypersensitivity. In this work, we have retrospectively studied the demographic and clinical characteristics, as well as the lung function and the sputum cell counts of intrinsic asthmatic outpatients seen during the period of 1996 to 1998 in the Pneumology Department of the CHU Sart Tilman. [less ▲]

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See detailLa cardiologie preventive: strategies chez l'enfant
Massin, M.; Vandoorne, Chantal ULg; Coremans, C. et al

in Revue Médicale de Liège (2002), 57(4), 207-12

The importance of preventive cardiology in youth has been established by several critical observations: there is evidence that the atherogenic process begins in childhood, and that the degree of ... [more ▼]

The importance of preventive cardiology in youth has been established by several critical observations: there is evidence that the atherogenic process begins in childhood, and that the degree of atherogenesis is related to measurable risk factors present during childhood. The literature indicated that long-range prevention of atheroselerosis and its sequelae by control of those risk factors should begin in childhood. This article reviews the established risk factors, the identification of high-risk individuals, public health strategies for the promotion of health in the French Community of Belgium and treatment of high-risk individuals. [less ▲]

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See detailEvaluation of thermodynamic properties of concrete substrates and cement slurries modified with admixtures
Courard, Luc ULg

in Materials and Structures (2002), 35(247), 149-155

The study of the creation and the stability of the interface between concrete substrates and repair systems needs the knowledge of the thermodynamic properties of materials. The measurement of the surface ... [more ▼]

The study of the creation and the stability of the interface between concrete substrates and repair systems needs the knowledge of the thermodynamic properties of materials. The measurement of the surface free energies of liquids is realised by means of Wilhelmy plate method on reference liquid and repair products. In order to determine polar and dispersive components, it is necessary to measure the contact angle of these liquids and products on reference solid surfaces and on concrete, mortars and aggregates. Centrifuged solutions of repair product systems elements were prepared in order to measure surface free energies on pure liquids without solid particles in suspension. Evolution of properties versus time were also taken into account and analysed in comparison with well-known liquids and products. [less ▲]

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See detailQualité de la prise en charge de l'hypertension artérielle. Pouvons-nous, devons-nous faire mieux?
Krzesinski, Jean-Marie ULg

in Revue Médicale de Liège (2002), 57(4), 202-206

Hypertension is well controlled in only less than 30% of the patients treated by drugs. It is thus important to improve this situation first by checking the treatment compliance but also by trying to ... [more ▼]

Hypertension is well controlled in only less than 30% of the patients treated by drugs. It is thus important to improve this situation first by checking the treatment compliance but also by trying to better educate the hypertensive population about the risk of uncontrolled hypertension and how to decrease this risk. [less ▲]

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See detailPolyethylene-layered silicate nanocomposites prepared by the polymerization-filling technique: synthesis and mechanical properties
Alexandre, Michaël ULg; Dubois, Philippe ULg; Sun, Tao et al

in Polymer (2002), 43(8), 2123-2132

Polyethylene-layered silicate nanocomposites were prepared by the in situ intercalative polymerization of ethylene by the so-called polymerization-filling technique and analyzed by transmission electron ... [more ▼]

Polyethylene-layered silicate nanocomposites were prepared by the in situ intercalative polymerization of ethylene by the so-called polymerization-filling technique and analyzed by transmission electron microscopy (TEM), X-ray diffraction analysis (XRD), differential scanning calorimetry, dynamic mechanical analysis and tensile testing. Non-modified montmorillonite and hectorite were first treated by trimethylaluminum-depleted methylaluminoxane before being contacted by a Ti-based constrained geometry catalyst. The nanocomposite was formed by addition and polymerization of ethylene. In the absence of a chain transfer agent, ultra high molecular weight polyethylene was produced. The tensile properties of these nanocomposites were poor and essentially independent of the nature and content of the silicate. Upon hydrogen addition, the molecular weight of the polyethylene was decreased with parallel improvement of the tensile and shear moduli, in relation to the filler content. The exfoliation of the layered silicates was confirmed by XRD analysis and TEM observation. The mechanical kneading of the molten nanocomposites resulted in the partial collapse of the exfoliated structure driven by the thermodynamic stability of the layered filler. [less ▲]

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See detailL'EAD au service d'une approche centrée sur l'apprenant et sur la médiatisation de l'expérience
Georges, François ULg; Demily, Fabian; Leclercq, Dieudonné ULg et al

(2002, April)

Le Laboratoire de Soutien à l’Enseignement Télématique (LabSET, directrice : M. Poumay) a, entre autres, pour mission d’aider les enseignants et les formateurs à concevoir et à développer leurs cours et ... [more ▼]

Le Laboratoire de Soutien à l’Enseignement Télématique (LabSET, directrice : M. Poumay) a, entre autres, pour mission d’aider les enseignants et les formateurs à concevoir et à développer leurs cours et activités sur Internet. Nous travaillons non seulement avec des institutions d’enseignement supérieur (Université et Hautes Ecoles), mais aussi avec des centres de formation, des centres de compétences, des organismes d’insertion socio-professionnelle et des fédérations d’entreprises. Ces partenariats ont dernièrement fait l’objet de deux projets : Technifutur, du nom de son commanditaire, et FORMADIS subsidié par la Communauté Européenne, le Ministère de l’emploi et de la formation de la région wallonne et le Ministère de l’enseignement supérieur de la Communauté Française de Belgique. L'article décrit ces initiatives. [less ▲]

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See detailComparison of different impulse response measurement techniques
Stan, Guy-Bart; Embrechts, Jean-Jacques ULg; Archambeau, Dominique

in Journal of the Audio Engineering Society (2002), 50(4), 249-262

The impulse response of an acoustical space or transducer is one of its most important characterizations. In order to perform the measurement of their impulse responses, four of the most suitable methods ... [more ▼]

The impulse response of an acoustical space or transducer is one of its most important characterizations. In order to perform the measurement of their impulse responses, four of the most suitable methods are compared: MLS (maximum-length sequence), IRS (inverse repeated sequence), time-stretched pulses, and SineSweep. These methods have already been described in the literature. Nevertheless, the choice of one of them depending on the measurement conditions is critical. Therefore an extensive comparison has been realized. This comparison was done through the implementation and realization of a complete, fast, reliable, and cheap measurement system. Finally, a conclusion for the use of each method according to the principal measurement conditions is presented. It is shown that in the presence of nonwhite noise, the MLS and IRS techniques seem to be more accurate. On the contrary, in quiet environments the logarithmic SineSweep method seems to be the most appropriate. [less ▲]

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See detailLes logiques participatives dans le cadre du parcours d'insertion
Jacquemain, Marc ULg; Carpentier, Dominique

Conference (2002, April)

Le document décrit une intervention sociologique de près de deux années visant à mettre sur pied un dispositif participatif dans le cadre du "parcours d'insertion" des chômeurs en formation. Il s ... [more ▼]

Le document décrit une intervention sociologique de près de deux années visant à mettre sur pied un dispositif participatif dans le cadre du "parcours d'insertion" des chômeurs en formation. Il s'interroge sur les fondements normatifs d'un tel dispositif, mais aussi sur les conditions pratiques de sa réalisation. Il décrit les résultats obtenus et débouche sur la question fondamentale à poser dans le cadre de la participation des citoyens les plus fragiles : ouverture démocratique ou manipulation ? La réponse proposée se trouve évidemment entre ces deux pôles. [less ▲]

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