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See detailTherapeutic monitoring of antidepressant drugs
Charlier, Corinne ULg

Conference (1997)

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See detailStrontium ranelate as a treatment of vertebral osteoporosis
Meunier, PJ; Slosman, DO; Delmas, PD et al

in Journal of Bone and Mineral Research (1997), 12(S1), 129

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See detailLagrangiens chiraux
Jaminon, Martine ULg

Conference (1997)

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See detailThe effect of avocado and soybean unsaponifiables on freshly isolated human articular chondrocytes
Henrotin, Yves ULg; Labasse, A; Zheng, S et al

in Revue du Rhumatisme (English ed.) (1997), 11

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See detailS12911, a new divalent strontium salt increases cartilage matrix formation
Henrotin, Yves ULg; Labasse, A; Zheng, X et al

in Osteoarthritis and Cartilage (1997), 5

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See detailTextural properties of pressure-induced gels of food proteins obtained under different temperatures
Dumoulin, Mireille ULg; Ozawa, S.; Hayashi, Rikimaru

in Suzuki, Atsushi; Hayashi, Rikimaru (Eds.) High Pressure Bioscience and Technology (1997)

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See detailIGF-1 but not IL-1bêta effects on the proteoglycan production by chondrocytes are regulated by strontium salts
Henrotin, Yves ULg; Labasse, A; Zheng, X et al

in Osteoarthritis and Cartilage (1997), 5

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See detailAnalytical performance and diagnostic efficiency of quantitative ultrasonography of the phalanxes
Reginster, Jean-Yves ULg; Dethor, M; Pirenne, H et al

in Journal of Bone and Mineral Research (1997), 12(S1), 384

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See detailOptical design of the FUV spectrographic imager for the IMAGE mission
Habraken, Serge ULg; Jamar, Claude ULg; Rochus, Pierre ULg et al

in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series (1997)

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See detailInfluence de la perfusion duodénale de caséinate de sodium sur la rétention azotée chez le taurillon Blanc Bleu Belge culard en croissance et rationné en protéines.
Froidmont, Eric; Beckers, Yves ULg; Thewis, André ULg

in 4èmes Rencontres autour de la Recherche sur les Ruminants, Paris, France, 4-5 décembre 1997 (1997)

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See detailAn adaptive high-gain observer for nonlinear systems
Bullinger, Eric ULg; Allgöwer, Frank

in 36th IEEE Conf. on Decision and Control (1997)

In this paper we present a high-gain observer for a general class of nonlinear SISO systems for which the high-gain parameter is determined on-line in an adaptive fashion. The adaptation scheme is simple ... [more ▼]

In this paper we present a high-gain observer for a general class of nonlinear SISO systems for which the high-gain parameter is determined on-line in an adaptive fashion. The adaptation scheme is simple and universal in the sense that it is independent of the system the observer is designed for. We prove that the observer output error becomes smaller than a user specified bound for large times and that the adaptation converges. The assumptions required for the adaptive high-gain observer are the same as for the nonadaptive high-gain observer, namely that the system is uniformly observable for any u(t) [less ▲]

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See detailAspects de l'individualisme : validation intraconcept et interconcepts en fonction du sexe
Broonen, Jean-Paul ULg

in Juhel, Jacques; Marivan, Thierry; Rouxel, Géraldine (Eds.) Psychologie et différences individuelles : questions actuelles (1997)

Contrairement à la structure unifactorielle Indépendance compétitive découverte outre-Atlantique, cette recherche confirme une structure bifactorielle Indépendance-Compétition. Cette structure noue des ... [more ▼]

Contrairement à la structure unifactorielle Indépendance compétitive découverte outre-Atlantique, cette recherche confirme une structure bifactorielle Indépendance-Compétition. Cette structure noue des liens différents avec la Conscience de soi privée et la Conscience de soi publique en fonction du sexe. [less ▲]

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See detailSomatostatin SSTR2 and Dopamine D2 receptors gene expression in Growth Hormone-producing pituitary adenomas
Ronci, N.; Tabarin, A.; Beckers, Albert ULg et al

in Annales d'Endocrinologie (1997), 58(1),

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See detailPregnancy-Associated Glycoprotein (PAG) profiles during pregnancy and postpartum and progesterone (P4) profiles during pregnancy in native goats from Northeast of Brazil.
Melo de Sousa, Noelita ULg; Garbayo, J. M.; Figueiredo, J. R. et al

in Arquivos - Faculdade de Veterinária, UFRGS (1997), 25(1 (Suppl)), 304-305

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See detailReconnaissance des formes : transfert méthodologique Nord-Sud
Weber, Christiane; Donnay, Jean-Paul ULg; Collet, Claude

in Actes des journées scientifiques du réseau de télédétection de l’UREF : Télédétection des espaces urbains et périurbains (1997)

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See detailHydrodynamic Approaches to Design Balancing Ponds
Pirotton, Michel ULg

in Marshall, English; Andras, Szollosi-Nagy (Eds.) Managing Water: Coping with Scarcity and Abundance (1997)

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See detailEffets de compétition dans les essais variétaux de plein-champ
Claustriaux, Jean-Jacques ULg

in Effets de compétitions dans les essais variétaux de plein-champ (1997)

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See detailCellular distribution of NSP in normal pituitary and in pituitary adenomas. Comparison with pituitary hormone expression.
Dukers, N.; Senden, N.; Timmer, E. et al

in 4th Euregional oncology meeting - abstract book (1997)

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See detailEvaluation of us-guided percutaneous fine needle aspiration biopsyin thyroïd nodules
Meunier, Paul ULg; Collignon, J.; Thiry, Albert ULg et al

in International Congress of Head and neck Radiology - Abstract book (1997)

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See detailL'évaluation environnementale informatisée de l'exploitation agricole
Debouche, Charles ULg

in Centre Européen pour la Promotion et la Formation en Milieu Agricole et Rural (CEPFAR) (Ed.) Les nouvelles technologies d'information et de communication en milieu rural (1997)

Il est proposé de procéder l’évaluation environnementale de l’exploitation agricole par la réalisation d’un écobilan de celle-ci. Cette notion d’écobilan doit s’entendre comme un bilan d’énergies et de ... [more ▼]

Il est proposé de procéder l’évaluation environnementale de l’exploitation agricole par la réalisation d’un écobilan de celle-ci. Cette notion d’écobilan doit s’entendre comme un bilan d’énergies et de matières aux frontières du système étudié. Dans notre cas, ce système est l’exploitation agricole. Cet écobilan est complété par une analyse du risque relative à l’usage des pesticides, ces derniers se prêtant difficilement à la méthode de l’écobilan. La méthode de réalisation de cet écobilan est explicitée en distinguant 1° la définition des objectifs et du champ de l’étude 2° l’inventaire et 3° l’analyse des incidences. Une démonstration de l’utilisation d’un logiciel effectuant cet écobilan est ensuite présentée aux participants. [less ▲]

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See detailComplémentarité des systèmes d'étanchéité-drainage en matériaux naturels et synthétiques dans le confinement des déchets
Courard, Luc ULg

in De Paepe, Robert (Ed.) Les géotextiles et géomembranes dans les travaux fluviaux et maritimes (1997)

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See detail"La littérature et le comique : le cas Allais"
Defays, Jean-Marc ULg

in Defays, Jean-Marc; Rosier, Laurence (Eds.) Alponse Allais, écrivain (1997)

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See detailImpact of insecticides on wild fauna: a proposed toxicity index
Cooper, J.F.; Wynn, N.R.; Deuse, J.P.L. et al

in Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (1997), 62(2B), 599-606

The risks to fauna associated with the use of pesticides are generally known for individual pesticides. There exists, however, a lack of pub Iished material providing comparative coverage of all ... [more ▼]

The risks to fauna associated with the use of pesticides are generally known for individual pesticides. There exists, however, a lack of pub Iished material providing comparative coverage of all pesticides, although some partial compilations have been published. ln an attempt to redress this situation, we propose here a Toxicity Index covering fish, birds and bees for 169 currently available insecticides. [less ▲]

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See detailNear and far infrared transitions of Fe2+ in cubic II-VI semiconductors: Dynamic Jahn-Teller interaction
Colignon, David ULg; Kartheuser, Eduard ULg

in Zeitschrift Fur Physikalische Chemie-International Journal Of Research In Physical Chemistry & Chemical Physics (1997), 201(Part 1), 119-126

Optical-absorption and emission measurements of doubly ionized iron in CdTe, ZnTe, ZnSe and ZnS have been analyzed by means of a vibronic coupling model. The model [1] is based on the crystal-field theory ... [more ▼]

Optical-absorption and emission measurements of doubly ionized iron in CdTe, ZnTe, ZnSe and ZnS have been analyzed by means of a vibronic coupling model. The model [1] is based on the crystal-field theory, including spin-orbit and spin-spin interactions and Jahn-Teller couplings of the orbital doublet and triplet states of Fe2+ with overtones of phonons of Gamma(3) and Gamma(5) symmetries, respectively. Starting from the 25 spin-orbit wave functions appropriate to the orbital doublet and triplet manifolds, the symmetry-adapted vibronic basis is constructed and used to diagonalize the Hamiltonian matrix formed out of five blocks of symmetry Gamma(1), Gamma(2), Gamma(3), Gamma(4) and Gamma(5). Phonon overtones up to N=6 for the Gamma(3) phonon and up to N=10 for the Gamma(5) phonon were included to ensure convergence of the energy values and eigenfunction of the vibronic states. The available measured positions and relative intensities of the spectral lines in the near and far infrared are accounted for within the experimental accuracy. It is shown that the above mentioned iron based II-VI compounds (ZnS:Fe2+ excepted) exhibit a strong dynamic Jahn-Teller coupling of the upper orbital triplet state with phonons of Gamma(5) symmetry and that the spin-orbit interaction between the orbital doublet and triplet states of Fe2+ is essential to explain the data. [less ▲]

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See detailTélédétection des espaces urbains et périurbains. Conclusions
Donnay, Jean-Paul ULg

in Actes des journées scientifiques du réseau de télédétection de l’UREF : Télédétection des espaces urbains et périurbains (1997)

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See detailDeclared chronic morbidity after 45 years : Results from a population survey in Belgium
Gosset, Christiane ULg; Cartier, P; De Prins, L et al

Conference (1997)

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See detailRéduction des rejets azotés chez le porc par l'alimentation.
Leterme, Pascal; Thewis, André ULg

in Efficience de l'azote en production végétale et animale, Journée d'Etude organisée par le Centre de Recherches Agronomiques et la Faculté Universitaire des Sciences Agronomiques (1997)

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See detailThe current budjet of NOy above the Jungfraujoch as derived from IR Solar Observations.
Demoulin, Philippe ULg; Mahieu, Emmanuel ULg; Zander, Rodolphe ULg et al

in Air Pollution Research Report Nr 66 (1998). (1997)

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See detailThe charnockitic liquid line of descent of jotunites: constraints from experimental and petrological data
Vander Auwera, Jacqueline ULg; Longhi, John; Duchesne, Jean Clair

in Terra Abstracts (1997), 9

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See detailPredicting response in head and neck cancer: The search for the holy grall
COUCKE, Philippe ULg

in European Journal of Cancer (1997), 33(supp 8), 289-290

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See detailUtilisation d’un code éléments finis pour étudier les problèmes d’intrusions d’eaux salées dans les aquifères côtiers
Carabin, Guy; Dassargues, Alain ULg

in Actes du Colloque National du CBGI/BCIG :’La Géologie de l’Ingénieur et l’eau dans le sous-sol’, Leuven (1997)

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See detailSodium monofluorophosphate reduces vertebral fractures in moderate postmenopausal osteoporosis
Reginster, Jean-Yves ULg; Meurmans, L; Zegels, Brigitte ULg et al

in Journal of Bone and Mineral Research (1997), 12(S1), 104

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See detailLa transparence dans la procédure d'attribution des marchés publics
Durviaux, Ann-Lawrence ULg

in Delvaux, André; Durviaux, Ann-Lawrence; Flamme, Philippe (Eds.) et al La nouvelle réglementation des marchés publics. Journée d'études du jeudi 6 mars 1997 (1997)

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See detailCalcul du transport convectif de polluant dans les aquifères phréatiques de Bucarest
Comeaga, Teodor; Dassargues, Alain ULg

in Actes des IIIème Rencontres Hydrologiques Franco-Roumaines, Montpellier (1997)

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See detailHigh yield radiosynthesis of p-[F-18]MPPF, 5-HT1A antagonist, and PET studies in cat brain.
Le Bars, D.; Lemaire, Christian ULg; Plenevaux, Alain ULg et al

in Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine (1997), 38

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See detailCalculs hydrogéologiques relatifs aux fouilles
Dassargues, Alain ULg

in Actes du Colloque National du CBGI/BCIG :’La Géologie de l’Ingénieur et l’eau dans le sous-sol’ (1997)

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See detailPeriodontal infections as potential risk factors for cardiovascular diseases
Geerts, Sabine ULg; Legrand, Victor; Rompen, Eric ULg

Poster (1997)

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See detailLes lipopeptides de Bacillus subtilis dans le domaine des émulsions
Deleu, Magali ULg

in Triennale de la FABI: évolution technologique et emploi (1997)

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See detailAnisotropy of Magnetic Susceptibility (AMS) study of deformation in the Bjerkreim-Sokndal layered intrusion (Rogaland, Southwest Norway)
Bolle, Olivier ULg; Diot, Hervé; Duchesne, Jean-Clair ULg

in Nordgulen, Øystein; Padget, Peter; Robinson, Peter (Eds.) et al COPENA conference at NGU, August 18-22, 1997: Abstract and Proceedings (1997)

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See detailOverview of european national forestinventories : attempt to a comparison
Rondeux, Jacques ULg

in Testlauf zur Landeswaldinventur : Konzeption, Verfahrenstest, Ergebnisse- (1997)

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See detailDevelopment of a methodology to measure fearfulness in horses
Vierin, M.; Vandenheede, Marc ULg; Bouissou, M. F. et al

Conference (1997)

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See detailEvaluation of the thermal part of the code SAFIR by comparison with the code TASEF
Pintea, Dan; Franssen, Jean-Marc ULg

in Ivan, Marin (Ed.) Proc. 8th Int. Conf. on Steel Structures, Vol. 2 (1997)

A thorough analysis has been performed to evaluate SAFIR release 1.3 through a set of examples presented by Wyckström in the paper "An evaluation scheme of computer codes for calculating temperature in ... [more ▼]

A thorough analysis has been performed to evaluate SAFIR release 1.3 through a set of examples presented by Wyckström in the paper "An evaluation scheme of computer codes for calculating temperature in fire exposed structures - two dimensional analysis". The results of SAFIR 1.3 have been compared with the results obtained by TASEF, or to analytical solution when available. The results of SAFIR 1.3 compare well with the analytical solutions and, with few exceptions, with those of TASEF. [less ▲]

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See detailLearning and multimedia
Denis, Brigitte ULg

in Teaching, learning, information : towards an open socratic school (1997)

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See detailEntreprise d'insertion: analyse comparative des projets de décret et conclusions
Defourny, Jacques ULg

in V.A. (Ed.) Actes des Matinées de l'économie sociale: tome II (1997)

Sur base de l'expérience des 7 projets-pilotes d'entreprise d'insertion en Wallonie, soutenus par la Région Wallonne, Le Fonds Social Européen et la Fondation Roi Baudouin (1994-1997) et après deux ... [more ▼]

Sur base de l'expérience des 7 projets-pilotes d'entreprise d'insertion en Wallonie, soutenus par la Région Wallonne, Le Fonds Social Européen et la Fondation Roi Baudouin (1994-1997) et après deux recherches du Centre d'Economie Sociale qui ont évalué et tiré les leçons de ces projets-pilotes, plusieurs projets de décrets et d'ordonnance ont vu le jour en vue d'officialiser et de soutenir les entreprises d'insertion en Belgique. Ce sont ces projets de politiques publiques qui sont comparés dans ce article. [less ▲]

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See detailAltération de l'état de vigilance, alcool et médicaments
Charlier, Corinne ULg

Conference (1997)

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See detailFirst Results from EIT
Clette, Frédéric; Delaboudiniere, J.-P.; Artzner, G. E. et al

in 1st Advances in Solar Physics Euroconference. Advances in Physics of Sunspots (1997)

The Extreme-UV Imaging telescope has already produced more than 15000 wide-field images of the corona and transition region, on the disk and up to 1.5R_o above the limb, with a pixel size of 2.6\arcsec ... [more ▼]

The Extreme-UV Imaging telescope has already produced more than 15000 wide-field images of the corona and transition region, on the disk and up to 1.5R_o above the limb, with a pixel size of 2.6\arcsec. By using four different emission lines, it provides the global temperature distribution in the quiet corona, in the range 0.5 to 3*E(6) K. Its excellent sensitivity and wide dynamic range allow unprecedented views of low emission features, even inside coronal holes. Those so-called ``quiet'' regions actually display a wide range of dynamical phenomena, in particular at small spatial scales and at time scales going down to only a few seconds, as revealed by all EIT time sequences of full- or partial-field images. The initial results presented here demonstrate the importance of this wide-field imaging experiment for a good coordination between SOHO and ground-based solar telescopes, as well as for science planning. [less ▲]

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See detailAn Improved Reachability Analysis Method for Strongly Linear Hybrid Systems
Boigelot, Bernard ULg; Bronne, Louis; Rassart, Stéphane

in Lecture Notes in Computer Science (1997), 1254

This paper addresses the exact computation of the set of reachable states of a linear hybrid system. It proposes an approach that is an extension of classical state-space exploration. This approach uses a ... [more ▼]

This paper addresses the exact computation of the set of reachable states of a linear hybrid system. It proposes an approach that is an extension of classical state-space exploration. This approach uses a new operation, based on a cycle analysis in the control graph of the system, for generating sets of reachable states, as well as a powerful representation system for sets of values. The method broadens the range of hybrid systems for which a finite and exact representation of the set of reachable states can be computed. In particular, the state-space exploration may be performed even if the set of variable values reachable at a given control location cannot be expressed as a finite union of convex regions. The technique is illustrated on a very simple example. [less ▲]

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See detailPit-1 gene HinfI RFLP and growth traits in double-muscled Belgian Blue cattle
Renaville, Robert ULg; Gengler, Nicolas ULg; Parmentier, Isabelle et al

Poster (1997)

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See detailLabelling of an intermediate-filament-associated protein in cerebellar radial glial cells with the RC2 antibody
Leprince, P; Chanas-Sacre, G; Lewin, M et al

Poster (1997)

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See detailQuantification of drugs in plasma of injured drivers
Charlier, Corinne ULg

Conference (1997)

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See detailMacro-scale variations of pCO2 distribution along the Belgium coast
Borges, Alberto ULg; Frankignoulle, M.

Conference (1997)

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See detailPaternity analyses reveal the variable efficacy of 4 males in a Barbus polyandrous cross.
Chenuil, A.; Binda, O.; Poncin, Pascal ULg et al

Poster (1997)

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See detailIn-orbit diagnostics of EIT EUV CCD radiation-induced aging
Defise, Jean-Marc ULg; Clette, Frédéric; Moses, J. et al

in Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series (1997)

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See detailOn the Existence of a Solution for Turbomachinery Blade Design
Demeulenaere, Alain; Léonard, Olivier ULg

in Proceedings of the 4th Belgian National Congress on Theoretical and Applied Mechanics (1997)

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See detailUne recherche-action destinée à favoriser une entrée positive dans la vie professionnelle de jeunes agrégés de l'enseignement secondaire supérieur de la Communauté française de Belgique
Beckers, Jacqueline ULg; Simons, Germain ULg

in Boxus, E.; Gilles, Jean-Luc; Jans, V. (Eds.) et al Actes du 15e Colloque de l'Association Internationale de Pédagogie Universitaire : stratégies et médias pédagogiques pour l'apprentissage et l'évaluation dans l'Enseignement supérieur (1997)

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See detailArcheologie du bâti: l'exemple des charpentes
Hoffsummer, Patrick ULg

in Archaeologia mediaevalis (1997), 20, 2

This presentation is to stimulate the interest to the study of roofs with building archaeology and dendrochronology

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See detailÜberblick über nationale Waldinventuren in Europa : Versuch einer vergleichenden
Rondeux, Jacques ULg

in Testlauf zur Landeswaldinventur : Konzeption, Verfahrenstest, Ergebnisse- (1997)

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See detailResolving conflicts in cartographic generalization with problem-resolution methods
Genin, Bernard; Donnay, Jean-Paul ULg

in 18th ICA International Cartographic Conference (1997)

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See detailThe dynamics of the karstic features of Sprimont (Belgium) and its consequences on the land-use planning. Preliminary note.
Ek, Camille ULg; Michel, Raymond; Mousny et al

in Proceedings of tne 12th International Congress of Speleology (1997)

The Department of Physical Geography of the University of Liège (Belgium) was in charge of updating the physical factors of the regional land management map for Sprimont, a karstic municipality of Belgium ... [more ▼]

The Department of Physical Geography of the University of Liège (Belgium) was in charge of updating the physical factors of the regional land management map for Sprimont, a karstic municipality of Belgium. The influence of floods, karst processes, landslides, and other physical factors were evaluated. The karst features and karst-related events have been mapped three times with accuracy in this area during the last century (in 1898, 1971 and 1996). The data provided the basis for a study of the rates and dynamics of the karst processes and permitted the forecasting of hazards on a secular basis. A map of karstic areas, karst features and karst dynamics was prepared. Some systematic trends of the evolution of karst features were noted. A map of risks and land-use constraints was derived from the first map and from the observed trends. Rules were induced from these data and were proposed to control building and other activities in clearly defined areas. [less ▲]

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See detailAccidents immunoallergiques dus aux médicaments
Charlier, Corinne ULg

Conference (1997)

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See detailAre deterministic models helpful to delineate groundwater protection zones in karstic aquifers ?
Dassargues, Alain ULg; Brouyère, Serge ULg

in Günay, G.; Johnson, I. (Eds.) Karst Waters & Environmental Impacts (Proc. of the 5th Int. Conf.) (1997)

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See detailPharmacodynamie des aminoglycosides et optimisation de leur pharmacocinétque en néonatologie
Battisti, Oreste ULg; Langhendries, J. P.; Bertrand, J. M. et al

Conference (1997)

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See detailDétermination des limites d’agglomération par télédétection : discussion méthodologique et application au cas de Huy (Belgique)
Donnay, Jean-Paul ULg; Lambinon, Michel

in Actes des journées scientifiques du réseau de télédétection de l’UREF : Télédétection des espaces urbains et périurbains (1997)

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See detailAnalyse de l'azadirachtine par HPLC et développement d'une formulation d'extraits de neem
Schiffers, Bruno ULg; Dieye, A.; Ntema, P. et al

in Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent) (1997), 62(2a), 225-233

Une méthode de dosage de l'azadirachtine a été développée. Après élimination de l'huile par l'hexane, l'azadirachtine est extraite des amandes broyées à l'aide de méthanol. Les extraits sont purifiés d ... [more ▼]

Une méthode de dosage de l'azadirachtine a été développée. Après élimination de l'huile par l'hexane, l'azadirachtine est extraite des amandes broyées à l'aide de méthanol. Les extraits sont purifiés d'abord par partage liquide/liquide, ensuite par chromatographie sur colonne de Florisil. L'analyse HPLC est réalisée notamnent sur colonne CI8 ODS. Le taux moyen de récupération est de 97%. Des extraits des amandes du neem (Azadirachta indica) ont été formulés en solution émulsionnable EC. [less ▲]

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See detailEnvironmental unpredictability rules the autumn migrations of trout (Salmo trutta) in the Belgian Ardennes.
Ovidio, Michaël ULg; Baras, Etienne; Goffaux, Delphine et al

Conference (1997)

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See detailIn vitro models of non persistent and persistent infection of human and murine neuroblastoma cell lines by the varicella zoster virus
Schlabertz, Tania; Sadzot-Delvaux, Catherine ULg; Piette, Jacques ULg et al

in Archives Internationales de Physiologie et de Biochimie (1997)

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See detailBinding sites analysis of the major varicella-zoster virus regulatory IE62 protein
Baudoux, Laurence; Remacle, V.; Defechereux, Patricia et al

Poster (1997)

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See detailThe Power of QDDs
Boigelot, Bernard ULg; Godefroid, Patrice; Willems, Bernard et al

in Lecture Notes in Computer Science (1997), 1302

Queue-content Decision Diagrams (QDDs) are finite-automaton based data structures for representing (possibly infinite) sets of contents of a finite collection of unbounded FIFO queues. Their intended use ... [more ▼]

Queue-content Decision Diagrams (QDDs) are finite-automaton based data structures for representing (possibly infinite) sets of contents of a finite collection of unbounded FIFO queues. Their intended use is to serve as a symbolic representation of the possible queue contents that can occur in the state space of a protocol modeled by finite-state machines communicating through unbounded queues. This is done with the help of a loop-first search, a state-space exploration technique that attempts whenever possible to compute symbolically the effect of repeatedly executing a loop any number of times, making it possible to analyze protocols with infinite state spaces though without the guarantee of termination. This paper first solves a key problem concerning the use of QDDs in this context: it precisely characterizes when, and shows how, the operations required by a loop-first search can be applied to QDDs. Then, it addresses the problem of exploiting QDDs and loop-first searches to broaden the range of properties that can be checked from simple state reachability to temporal logic. Finally, a sufficient criterion for the termination of a loop-first search using QDDs is given. [less ▲]

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See detailCharacterization of the insulin-like growth (IGF) axis in the human thymus
Kecha, Ouafae; Achour, Imane; Martens, Henri ULg et al

in The Endocrine Society (Ed.) Proceedings of the 77th Annual Meeting of the Endocrine Society (1997)

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See detailInfluence of the ionospheric refraction on time transfer using GPS
Warnant, René ULg

in Proceedings of the 11 th. European Frequency and Time Forum (1997)

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See detailEstimation of actual evapotranspiration at large watershed scale in Africa using NOAA-AVHRR surface temperature and NDVI.
Touré, Souleymane; Tychon, Bernard ULg

in 1997 Meteorological satellite data users' conference Proceedings (1997)

To estimate actual evapotranspiration on regional scale, seven subcatchments were choosen on fleuve Niger catchment where we have selected stations for representative meteorological measurements ... [more ▼]

To estimate actual evapotranspiration on regional scale, seven subcatchments were choosen on fleuve Niger catchment where we have selected stations for representative meteorological measurements. Precipitation values are spatially represented by using Thiessen polygons and Kriging methods and, based on water balance equation, we deduce the actual evapotranspiration term.The goal (objective) of this study is to deduce from the water balance equation the evapotranspiration term, to correlate remote sensing indicators (surface temperature and NDVI) and evapotranspiration data and characterise factors that affect this correlation. [less ▲]

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See detailZeolite-catalyzed acetylation of alkenes with acetic anhydride
Smith, Keith; Zhenhua, Zhao; Delaude, Lionel ULg et al

in Studies in Surface Science and Catalysis (1997), 108(Heterogeneous Catalysis and Fine Chemicals IV), 99-106

Among various microporous adsorbents such as alumina, silica, clays, mol. sieves, etc., the HY zeolite was found to be best at promoting the acylation of 2,3-dimethyl-2-butene with acetic anhydride. The ... [more ▼]

Among various microporous adsorbents such as alumina, silica, clays, mol. sieves, etc., the HY zeolite was found to be best at promoting the acylation of 2,3-dimethyl-2-butene with acetic anhydride. The influence of numerous exptl. parameters on the course of the reaction was investigated. Variations in the silica/alumina ratio of the zeolite, or in the relative proportions of reagents and catalyst, markedly affected the yield of 3,3,4-trimethyl-4-penten-2-one, whereas the reaction time and temp. were less influential. The procedure was extended to various other alkenes and it was possible to regenerate and to reuse the solid catalyst without significant loss of activity. [less ▲]

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See detailLes concours d'infractions en droit pénal social
Kefer, Fabienne ULg

in Le droit pénal social et les contrats de travail spéciaux (1997)

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See detailLe typage génétique: un outil de certification en production bovine
Mortiaux, Frédéric; Renaville, Robert ULg; Parmentier, Isabelle et al

Conference (1997)

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See detailUltrasonographic examination of the soft tissue of the palmar aspect of the fetlock
Busoni, Valeria ULg; Denoix, J. M.

in Proceedings of the 5th WEVA conference (1997)

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See detailNon-responsive generalised bacterial infection associated with systemic lupus erytematous in a beauceron
Clercx, Cécile; Mc Entee, Katleen; Gilbert, Sophie et al

in JViM (1997)

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