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See detailComparaison de l'évolution de 2 litières biomaîtrisées à base de sciure ou de paille pour porcs à l'engraissement
Marlier, Didier ULg; Nicks, Baudouin ULg; Canart, Bernard et al

in Annales de Médecine Vétérinaire (1994), 138(1), 45-53

Two rooms of a pig house were used to study 2 deep litter systems where the animals were kept on a 50 cm thick layer of sawdust or of chopped straw (10 cm). Seven days before the arrival of the animals ... [more ▼]

Two rooms of a pig house were used to study 2 deep litter systems where the animals were kept on a 50 cm thick layer of sawdust or of chopped straw (10 cm). Seven days before the arrival of the animals, slurry and a microbial product used to stimulate the fermentation were added to the litters. Fifteen pigs on sawdust and seventien pigs on straw (floor spaces : 1.4 and 1.2 M2/pig) were fattened from 23.1 to 93.1 kg live weight. Excreta from pigs was dung into the bedding weekly and treated with the microbial product. This labour was considered as too hard in the straw room and was ended at day 105. No sawdust was added during the fattening period but straw was added 5 times to keep the pigs clean and to keep the temperature in the bedding higher than 30-degrees-C. The mean temperature in the sawdust bed was higher (38 +/- 5,4-degrees-C vs 35 +/- 6,7-degrees-C, p > 0,001) and more constant (mean daily variation 1,3 +/- 1,6 vs 2,2 +/- 2,4-degrees-C, p > 0,001) than the temperature recorded in the straw bed. The air temperature and the relative humidity were similar in the 2 rooms (21-degrees-C and 60 The concentrations of ammonia in the air were measured with Gastec tubes. The average ammonia concentrations recorded during the 7 days before the arrival of the animals (48 +/- 36 ppm vs 12 +/- 9,2 ppm) and those recorded after the eighth day (11 +/- 5,6 ppm vs 6,7 +/- 3,9 ppm) were significantly higher with the straw system compared with the sawdust system. The daily gains were not significantly different in the 2 rooms (552 g on average) and the food conversion ratios in the 2 rooms were 3,6 kg/kg (on sawdust) and 3,85 kg/kg (on straw). Carcasses were of equal quality. In conclusion, results were better with the sawdust bed than with the straw bed. The sawdust bed provided a higher temperature in the bedding and a lower ammonia concentration in the air. The routine weekly task of digging was easier in the sawdust bed and the bedding was used for a second batch. [less ▲]

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See detailCoût dans le secteur de la distribution d'eau en Wallonie et à Bruxelles : estimation d'une fonction de coût hédonique
Evrard, Olivier; Lejeune, Bernard ULg; Thiry, Bernard

in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (1994), 65(2), 333-360

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See detailEvaluation d’une expérience de rénovation de l’enseignement fondamental: Méthodologie de recherche
Piéron, Maurice; Cloes, Marc ULg; Delfosse, Catherine et al

in Revue de l'Education Physique (1994), 34(2-3), 53-58

Les expériences pédagogiques de mise en œuvre de nouvelles méthodes ou structures de rénovation de l'enseignement sont particulièrement ardues à évaluer quant à leurs effets. Se déroulant en milieu ... [more ▼]

Les expériences pédagogiques de mise en œuvre de nouvelles méthodes ou structures de rénovation de l'enseignement sont particulièrement ardues à évaluer quant à leurs effets. Se déroulant en milieu naturel, elles subissent l'influence d'un grand nombre de variables qu'il est bien difficile voire impossible de contrôler et parfois simplement de prendre en compte. Les impondérables sont multiples. La voie la moins aléatoire consiste en une démarche multidimensionnelle qui analyse l'élève et l'enseignant, sous plusieurs points de vue, sans négliger des facteurs d'environnement socio-économiques qui peuvent également se révéler déterminants. ... [less ▲]

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See detailL'hémorragie pulmonaire induite par l'exercise chez le cheval
Art, Tatiana ULg; Lekeux, Pierre ULg

in Pratique Vétérinaire Equine (1994), 26(1), 15-24

This review analyses the epidemiology, etiology, anatomo- and physiopathology, diagnosis and prevention of the syndrome of exercise-induced pulmonary hemorrhage in horses.

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See detailHormonal profile of growing male and female diploïds and triploïds of the blue tilapia, Oreochromis aureus, reared in intensive culture
Mol, K.; Byamungu, N.; Cuisset, B. et al

in Fish Physiology and Biochemistry (1994), 13

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See detailIs aprotinin worth the risk in total hip replacement?
Janssens, Marc ULg; Joris, Jean ULg

in Anesthesiology (1994), 81(2), 518-519

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See detailBovine Growth Hormone-Taqi Rflp And Quantitative Traits Breed Selected For Growth Performances And Meat Production
Sneyers, M.; Renaville, Robert ULg; Falaki, M. et al

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1994), 102(2),

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See detailShape processing and analysis using the calypter
Pirard, Eric ULg

in Journal of Microscopy (1994), 175(3), 214-221

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See detailSignificance of soluble transferrin receptor
Beguin, Yves ULg; Loo, M.; R'Zik, Samir ULg et al

in Molecular Biology of Hematopoiesis (1994)

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See detailBrucellose enzootique à Brucella suis biotype 2 chez le sanglier (sus scrofa) en Belgique
Godfroid, J.; Michel, P.; Uytterhaegen, L. et al

in Annales de Médecine Vétérinaire (1994), 138

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See detailThe treatment of amiodarone-induced hyperthyroidism. Is there a place for surgery?
Meurisse, Michel ULg; Detroz, Bernard ULg; Messens, D. et al

in Acta Chirurgica Belgica (1994), 94(1), 36-41

In many instances amiodarone-induced hyperthyroidism has been reported as mild, thyroid functions returning to normal after discontinuation of the drug. Nevertheless, life-threatening amiodarone-induced ... [more ▼]

In many instances amiodarone-induced hyperthyroidism has been reported as mild, thyroid functions returning to normal after discontinuation of the drug. Nevertheless, life-threatening amiodarone-induced thyrotoxicosis has also been described. Conventional treatments such as with antithyroid drugs (Thionamide) and corticosteroids are essentially ineffective or fail to stop the dramatic course of the thyroid crisis. This limited efficacy of medical therapy, particularly in patients with previously--neglected or unknown--thyroid disease, prompted us to intervene surgically. We report a series of six patients who underwent total or nearly total thyroidectomy as first line therapy for four of them. Surgery resulted in rapid resolution of thyrotoxicosis with an uneventful postoperative course. This approach has the advantage of immediate and safe efficacy, low risk of relapse and finally, appears to be the only antithyroid treatment that permits continued therapy with amiodarone. [less ▲]

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See detailL’éthique et l’animal. Eléments pour un débat
Ansay, M.; Delaunois, A.; Gustin, Pascal ULg

in Annales de Médecine Vétérinaire (1994), 138

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See detailDetailed Study of a Molecule in a Molecule N-Acetyl-L-Tryptophanamide in a Active-Site Model of Alpha-Chymotrypsin
Dive, Georges ULg; Dehareng, Dominique ULg; Ghuysen, Jean-Marie ULg

in Journal of the American Chemical Society (1994), 116(6), 2548-2556

Six complexes between a model active site of alpha-chymotrypsin (261 atoms) and N-acetyl-L-tryptophanamide (33 atoms) were optimized at the semiempirical AM1 level. In one of these complexes, a water ... [more ▼]

Six complexes between a model active site of alpha-chymotrypsin (261 atoms) and N-acetyl-L-tryptophanamide (33 atoms) were optimized at the semiempirical AM1 level. In one of these complexes, a water molecule was included. A detailed study at the geometric and energetic levels is presented. The discussion deals with the nature of the interaction, the effect of the environment, the ligand deformation, the backbone relaxation, the water molecule freedom, and the comparison with the molecular mechanics results. [less ▲]

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See detailInteractions between the biofilm growth and the hydrodynamics in an aerobic trickling filter
Lekhlif, B.; Toye, Dominique ULg; Marchot, Pierre ULg et al

in Water Science & Technology (1994), 29

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See detailDNase I hypersensitive sites far upstream of the rat tryptophan oxygenase gene direct developmentally regulated transcription in livers of transgenic mice.
Kaltschmidt, Christian; Muller, Marc ULg; Brem, Gottfried et al

in Mechanisms of Development (1994), 45(3), 203-10

Expression of the gene coding for tryptophan oxygenase (TO) is switched on in rat liver about two weeks after birth. We identified two clusters of DNaseI hypersensitive (HS) sites in the TO gene upstream ... [more ▼]

Expression of the gene coding for tryptophan oxygenase (TO) is switched on in rat liver about two weeks after birth. We identified two clusters of DNaseI hypersensitive (HS) sites in the TO gene upstream region; one near the promoter, the other at a distant upstream location (-8.5 kb). Hypersensitivity of upstream sites was present in adult and in 7 day old rat liver, but absent in kidney. To investigate their role in transcriptional regulation, a reporter gene controlled by both HS site regions was used to generate transgenic mice. In these animals the transgene followed the cell specific and developmental regulation of the endogenous gene: inactive after birth and active in adult liver. Transgenes containing only the promoter proximal HS site were non-functional. [less ▲]

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See detailThe use of large scale computer assisted tomography for the study of hydrodynamics in trickling filters
Toye, Dominique ULg; Marchot, Pierre ULg; Crine, Michel ULg et al

in Chemical Engineering Science (1994), 49(24B), 5271-5280

In this paper, a new experimental technique is proposed, based on X-ray tomography, allowing the analysis of the gas-liquid-solid phase distribution in trickling filters. Tomography refers to the cross ... [more ▼]

In this paper, a new experimental technique is proposed, based on X-ray tomography, allowing the analysis of the gas-liquid-solid phase distribution in trickling filters. Tomography refers to the cross-sectional imaging of an object from data collected by illuminating this object from many directions. The experimental set-up allows the scanning of transverse sections of rather large filters: up to 0.8 m diameter and 2 m height can be irradiated. Experiments were carried out both without and with liquid flow. In the absence of liquid, the reconstructed images give a view of the non-uniformity of the solid phase distribution. The images obtained are very complex because they result from the superposition of several distributions with different spatial scales. The existence of a first spatial scale is shown which allows separation of the properties belonging to the individual packing elements from those belonging to the bed scale. When liquid is flowing through the packed bed, the distribution of the liquid hold-up is clearly evidenced, despite the very low liquid film thickness. [less ▲]

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See detailCrystallization and X-ray diffraction study of the Streptomyces K15 penicillin-binding DD-transpeptidase.
Englebert, S.; Charlier, Paulette ULg; Fonze, E. et al

in Journal of Molecular Biology (1994), 241(2), 295-7

The 262 amino acid residue long DD-transpeptidase/penicillin-binding protein of Streptomyces K15 has been crystallized at room temperature by using the hanging drop vapour diffusion technique. The ... [more ▼]

The 262 amino acid residue long DD-transpeptidase/penicillin-binding protein of Streptomyces K15 has been crystallized at room temperature by using the hanging drop vapour diffusion technique. The crystals belong to the orthorhombic space group P2(1)2(1)2(1), with unit cell parameters a = 46.4 A, b = 54.1 A and c = 108.3 A. They contain one protein molecule per asymmetric unit and diffract to about 1.9 A. X-ray data have been collected to 2.0 A from a native crystal. The previously published amino acid sequence of the protein has been corrected at positions 71, 72, 113, 114 and 156. [less ▲]

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See detailSynthesis, purification and kinetic properties of fluorescein-labelled penicillins
Lakaye, Bernard ULg; Damblon, Christian ULg; Jamin, Marc et al

in Biochemical Journal (1994), 300

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See detailAnevrysme femoral superficiel rompu dans le cadre d'une neurofibromatose. A propos d'un cas
Van Damme, Hendrik ULg; Deprez, Manuel ULg; De Leval, Laurence ULg et al

in Journal des Maladies Vasculaires (1994), 19(1), 62-5

The authors observed the spontaneous rupture of a dysplastic superficial femoral artery in a 47 years old patient with Von Recklinghausen disease. The patient presents a gigantism of his right lower limb ... [more ▼]

The authors observed the spontaneous rupture of a dysplastic superficial femoral artery in a 47 years old patient with Von Recklinghausen disease. The patient presents a gigantism of his right lower limb. On angiography, the femoropopliteal axis is polyaneurysmal and there is evidence of rupture at mid-thigh. The diseased artery is excluded by interposition of a dacron prosthesis, with reimplantation of the deep femoral artery. Histology shows fibrohyalin thickening of the intima. Dysplasia of large limb arteries is excessively rare in Von Recklinghausen disease. [less ▲]

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See detailRock progressif et analyse musicale
Pirenne, Christophe ULg

in Art&Fact (1994), 13

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See detailChiral restoration transition in scaled effective Lagrangians
Jaminon, Martine ULg; Van den Bossche, Bruno

in Zeitschrift für Physik. C, Particles and Fields (1994), 64

We make a systematic study of the chiral restoration transition in function of the two free parameters of two scaled effective NJL Lagrangians. We show that it is not possible to reproduce with the same ... [more ▼]

We make a systematic study of the chiral restoration transition in function of the two free parameters of two scaled effective NJL Lagrangians. We show that it is not possible to reproduce with the same set of parameters the temperature behaviours of the quark condensate and of the quark entropy and a critical density at least equal to the normal density of nuclear systems. [less ▲]

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See detailMeasurement of Right Ventricular Ejection Fraction and Volume by the Thermodilution Technique in the Unsedated Calf
Amory, Hélène ULg; Mc Entee, Kathleen ULg; Linden, Annick ULg et al

in Research in Veterinary Science (1994), 56(1), 75-81

This study was designed to test the applicability and the reproducibility of the thermodilution method in the measurement of right ventricular ejection fraction (EF), end-diastolic volume (EDV) and end ... [more ▼]

This study was designed to test the applicability and the reproducibility of the thermodilution method in the measurement of right ventricular ejection fraction (EF), end-diastolic volume (EDV) and end-systolic volume (ESV) in unsedated cattle. In the 16 healthy calves studied, it was possible, using a fast response thermodilution catheter, to obtain characteristic exponential steplike washout curves, allowing the calculation of right ventricular EF, EDV and ESV. Five to 10 successive thermodilution curves were recorded within a few minutes and two to five similar sets of measurements were performed throughout the same day to test the reproducibility of the technique. The same protocol was repeated the following day. Right ventricular EF, EDV and ESV were reproducible successively, throughout a given day and on following days. The mean intraset, intraday and interdays coefficients of variation ranged from a mean of 4.0 (SD 4.1) per cent to a mean of 18.2 (SD 7.9) per cent. Values of right ventricular volumes and EF agreed with those previously reported in various animal species. Thermodilution was, therefore, shown to be a useful method for measuring with a satisfactory reproducibility, right ventricular EF, EDV and ESV in the unsedated healthy calf [less ▲]

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See detailPsychophysiological correlates of suicidal behavior in depression. A preliminary study.
Hansenne, Michel ULg; Pitchot, William ULg; Gonzalez Moreno, A. et al

in Neuropsychobiology (1994), 30(1), 1-3

P300 and contingent negative variation (CNV) were recorded in depressive inpatients with and without history of suicide attempt. The results show a significant reduction of both P300 and CNV in patients ... [more ▼]

P300 and contingent negative variation (CNV) were recorded in depressive inpatients with and without history of suicide attempt. The results show a significant reduction of both P300 and CNV in patients who had attempted suicide as compared with patients who had not. Moreover, a significant correlation was found between the suicidal risk scale and CNV amplitude. Psychophysiological and biochemical implications are discussed. [less ▲]

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See detailA note on the size-fractionated pigments of the phytoplankton of the Strait of Magellan (February-March 1991)
Saggiomo, Vincenzo; Mangoni, Olga; Borriello, C. et al

in Oebalia : International Journal of Marine Biology and Oceanography (1994), XX

During an oceanographic cruise, carried out at the end of the austral summer (February-March 1991) in the Strait of Magellan, spatial patterns of size-fractionated chlorophyll and primary production were ... [more ▼]

During an oceanographic cruise, carried out at the end of the austral summer (February-March 1991) in the Strait of Magellan, spatial patterns of size-fractionated chlorophyll and primary production were studied in relation to hydrographic patterns. Phytoplankton biomass, in terms of active Chl a, ranged between 10 and 51 mg m-2 and primary production between 275 and 1 170 mg C m-2 d-1. The most important features concern the confinement of the microphytoplanktonic fraction to the Pacific opening and to the embayements between the two Narrows. In the internal part of the Strait, an uniform dimensional structure (< 5 um) of phytoplankton communities was observed, with the picophytoplanktonic fraction always dominant. [less ▲]

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See detailA propos d'un cas de kératite a Mycobacterium chelonae
Duchesne, Bernard ULg; Marechal-Courtois; Melin, Pierrette ULg

in Bulletin de la Société Belge d'Ophtalmologie (1994), 254

The authors presents one case of primitive corneal mycobacterium keratitis after corneal graft. This rare form of keratitis is analysed in the field of mycobacterial infections who's nowadays more ... [more ▼]

The authors presents one case of primitive corneal mycobacterium keratitis after corneal graft. This rare form of keratitis is analysed in the field of mycobacterial infections who's nowadays more developed in our industrialised countries. The description of the case point out the multiresistance of this mycobacterium and describe the different treatments. [less ▲]

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See detailLa gestion des données avec le logiciel V. M. S.
Claustriaux, Jean-Jacques ULg; Deltenre, Alain

in Notes de Statistique et d'Informatique (1994), 2

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See detailTechniques moleculaires de detection et d'identification des agents phytopathogenes.
Lepoivre, Philippe ULg; Kummert, J.; Colinet, D. et al

in Cahiers Agricultures (1994), 3(4),

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See detailPlasma Beta-Endorphin Response of Thoroughbred Horses to Maximal Exercise
Art, Tatiana ULg; Franchimont, P.; Lekeux, Pierre ULg

in Veterinary Record : Journal of the British Veterinary Association (1994), 135(21), 499-502

Ten horses underwent a standardised strenuous treadmill exercise test, before, during and after which measurements were made of plasma beta-endorphin and cortisol concentrations, blood lactate, glucose ... [more ▼]

Ten horses underwent a standardised strenuous treadmill exercise test, before, during and after which measurements were made of plasma beta-endorphin and cortisol concentrations, blood lactate, glucose, haemoglobin and pH, the activities of creatine kinase, lactate dehydrogenase and aspartate amino-transferase, and heart rate, oxygen uptake and expired minute volume. The correlations between the exercise-induced response of beta-endorphin and the changes observed in the other physiological measurements were examined. There was a large variation in the beta-endorphin response of the horses to exercise. The increase in beta-endorphin was correlated significantly and inversely with the treadmill velocity at which maximal oxygen uptake was reached. It was also significantly and directly correlated with the heart rate during recovery, the increase in plasma lactate concentration and the change in blood pH, indicating that the exercise-induced increase in beta-endorphin concentration was smaller in horses with a higher aerobic capacity [less ▲]

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See detailDistribution of plankton parameters in the north eastern North Sea in relation to vertical physical structures
Veeschkens, Christine; Belkhiria, Sami; Goffart, Anne ULg et al

in Bulletin de la Société Royale des Sciences de Liège (1994), 63(1-2), 65-88

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See detailHistorical seismicity of the lower Rhine and Meuse valleys from 600 to 1525 : a new critical review
Alexandre, Pierre ULg

in Netherlands Journal of Geosciences - Geologie en Mijnbouw (1994), 173

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See detailGrowth-inhibiting effects of a neem-based insecticide (Margosan-O) against Spodoptera littoralis (Lepidoptera: Noctuidae
Haubruge, Eric ULg; Seck, Dogo; Hemptinne, Jean-Louis et al

in Insect Science and its application (1994), 15(4), 243-249

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See detailObservations on the establishment of a Devonian and Lower Carboniferous high resolution miospore biostratigraphy
Streel, Maurice ULg; Loboziak, S

in Review of Palaeobotany and Palynology (1994), 83

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See detailOnce-a-day administration of amikacin in neonates: clinical evidence of the validity of a pharmacokinetic according to the gestational age
Battisti, Oreste ULg; Wallemacq P; Langhendries JP

in Early Human Development (1994), 38

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See detailApprendre, ou se mettre en projet ? Réflexions au départ d'une expérience de pédagogie du projet en classe du secondaire
Jadoulle, Jean-Louis ULg

in Histoire et Enseignement : Bulletin (1994), 44e année(n°1), 5-17

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See detailL'anemie ferriprive de la grossesse.
Fraipont, V.; Beguin, Yves ULg; Fillet, Georges ULg

in Revue Médicale de Liège (1994), 49(8), 436-45

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See detailGalectins: a family of animal beta-galactoside-binding lectins.
Barondes, S. H.; Castronovo, Vincenzo ULg; Cooper, D. N. et al

in Cell (1994), 76(4), 597-8

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See detailThe structures and catalytic mechanisms of active-site serine beta-lactamases.
Lamotte, Josette ULg; Knox, J.; Kelly, J. A. et al

in Biotechnology & Genetic Engineering Reviews (1994), 12

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See detailHooliganisme et extrémisme
Comeron, Manuel ULg

in Observatoire : Revue d'Action Sociale & Médico-Sociale (1994), 1

Les dimensions de racisme et d'extrémisme politique sont liés aux problèmes de sécurité et de violence posés par les supporters de football.

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See detailDetection des molecules responsables de l'activite biocide des feuilles de Boscia senegalensis (Pers.) Lam ex Poir. par echantillonage d'espace de tete et spectrometrie de masse couplee a la chromatographie en phase gazeuse.
Lognay, Georges ULg; Marlier, M.; Seck, D. et al

in Bulletin des Recherches Agronomiques de Gembloux (1994), 29(1),

Des échantillons de feuilles de Boscia senegalensis (Prns.) I.ev ex Porn. ont été tnaintenus dans des conditions contrôlées sous un flux d'hélium, à l'intérieur d'une.platine de désorption thermique ... [more ▼]

Des échantillons de feuilles de Boscia senegalensis (Prns.) I.ev ex Porn. ont été tnaintenus dans des conditions contrôlées sous un flux d'hélium, à l'intérieur d'une.platine de désorption thermique directement connectée à un GC-MS. A côté du trans-2-hexénal, responsable de la note "verte" des feuilles, l'isothiocyanate de méthyle et le cyanure de méthyle (acétonitrile) ont été détectés. Ces deux produits se sont formés par dégradation enzymatique in situ d'un précurseur, la glucocapparine. Ils ont été caractérisés par leur spectre de masse. La libération de cyanure de méthyle à partir d'échantillons biologiques est expliquée. [less ▲]

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See detailB.E.M.S. : Batterie d'Evaluation de la Morpho-Syntaxe : développement, évaluation, et lignes d'action
Fayasse, M.; Comblain, Annick ULg; Rondal, Jean-Adolphe ULg

in Informations pédagogiques (1994), 12

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See detailCerebral blood flow velocities during natural bovine surfactant therapy in very preterm babies
Battisti, Oreste ULg; Detry, J.; Louis, J. et al

in Circulation et Métabolisme du Cerveau (1994), 11

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See detailJean Capart ou la naissance de l’égyptologie belge
Winand, Jean ULg

in Egyptes (1994), 4

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See detailEvaluation d’une expérience de rénovation de l’enseignement fondamental: Méthodologie de recherche
Piéron, Maurice; Cloes, Marc ULg; Delfosse, Catherine

in Revue de l'Education Physique (1994), 34(2-3), 117-120

Un projet pédagogique de l'envergure de celui qui fut mis en place dans l'enseignement fondamental de la Communauté française de Belgique exige que l'on considère les effets possibles sous de multiples ... [more ▼]

Un projet pédagogique de l'envergure de celui qui fut mis en place dans l'enseignement fondamental de la Communauté française de Belgique exige que l'on considère les effets possibles sous de multiples éclairages. Par les personnes auxquelles il s'adresse, par la diversité de ces effets et par l'organisation qu'il requiert, par la nécessité de mettre en évidence les relations de causalité, il a nécessité une méthodologie d'évaluation multidimensionnelle. ... [less ▲]

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See detailMultiphase Saturation Curves of the Oxoglutarate Carrier : A mathematical Model
Holzhütter, H.-G.; Sluse-Goffart, C.; Sluse, Francis ULg

in Mathematical & Computer Modelling (1994), 19(6-8), 263-272

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See detailSynthesis of barium-titanate by the sol-gel process
LEMOINE, Christine; Gilbert, Bernard ULg; MICHAUX, Bernard et al

in Journal of Non-Crystalline Solids (1994), 175(1), 1-13

Homogeneous BaTiO3 gels were prepared by hydrolysis and polycondensation reactions between titanium isopropoxide and barium hydroxide in the presence of methoxyethanol, methanol and water. Gel formation ... [more ▼]

Homogeneous BaTiO3 gels were prepared by hydrolysis and polycondensation reactions between titanium isopropoxide and barium hydroxide in the presence of methoxyethanol, methanol and water. Gel formation mechanisms were investigated by Raman scattering spectrometry. Two drying methods are carried out: either in air with a possible formation of barium carbonate or in a vacuum furnace, sheltered from CO2. The influence of the drying method on texture is studied through nitrogen adsorption-desorption isotherm analyses. A heat treatment is deduced from thermogravimetry and differential scanning calorimetry results. The influence of the calcining temperature on the texture and the crystallization of the solids has been measured. For the first time, the transformation at 900 degrees C from the cubic to the tetragonal form of BaTiO3 has been observed by polarization microscopy. [less ▲]

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See detailThe 4s-4p Transitions in Neutral Phosphorus
Biémont, Emile ULg; Martin, F.; Quinet, Pascal ULg et al

in Astronomy and Astrophysics (1994), 283

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See detailQue retenir d’une expérience d’éducation physique quotidienne dans le cadre d’une rénovation de l’enseignement fondamental?
Piéron, Maurice; Cloes, Marc ULg; Delfosse, Catherine et al

in Revue de l'Education Physique (1994), 34(2-3), 117-120

Un projet pédagogique de l'envergure de celui qui fut mis en place dans l'enseignement fondamental de la Communauté française de Belgique exige que l'on considère les effets possibles sous de multiples ... [more ▼]

Un projet pédagogique de l'envergure de celui qui fut mis en place dans l'enseignement fondamental de la Communauté française de Belgique exige que l'on considère les effets possibles sous de multiples éclairages. Par les personnes auxquelles il s'adresse, par la diversité de ces effets et par l'organisation qu'il requiert, par la nécessité de mettre en évidence les relations de causalité, il a nécessité une méthodologie d'évaluation multidimensionnelle. [less ▲]

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See detailLongwave Sky Radiation Parametrizations
Aubinet, Marc ULg

in Solar Energy (1994), 53(2),

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See detailL'inventaire forestier wallon: un outil de developpement regional
Rondeux, Jacques ULg

in Wallonie (1994), 21(34), 3-8

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See detail"Des biet ou lombardeau": La langue d'un écrivant belgoroman du début du 17e siècle
Boutier, Marie-Guy ULg; Chambon, Jean-Pierre

in Revue de Linguistique Romane (1994), 58

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See detailLes choix stratégiques actuels dans la prévention du processus diabétogène auto-immun
Geenen, Vincent ULg; Martens, Henri ULg; Kecha, Ouafae et al

in Médecine et Hygiène (1994), 52

Le diabète insulino-dépendant (DID) est de plus en plus admis comme résultant d'une rupture de la tolérance immunitaire vis-à-vis de la cellule ß pancréatique. La compréhension des mécanismes centraux et ... [more ▼]

Le diabète insulino-dépendant (DID) est de plus en plus admis comme résultant d'une rupture de la tolérance immunitaire vis-à-vis de la cellule ß pancréatique. La compréhension des mécanismes centraux et périphériques de la tolérance vis-à-vis de la cellule ß doit logiquement aboutir à une prévention non toxique et efficace du DID. Deux choix stratégiques sont proposés à l'heure actuelle. D'une part, la tolérance périphérique à l'insuline en tant que cible du processus auto-immun pourrait être restaurée via l'administration d'insuline à faibles doses par voie sous-cutanée ou orale. D'autre part, le facteur de croissance apparenté à l'insuline de type 2 (IGF2) pourrait réinduire la tolérance centrale de l'insuline et, secondairement, de la cellule ß insulino-sécrétrice. [less ▲]

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See detailLa Shoah ne fut pas un spectacle. A propos de La liste de Schindler
Delruelle, Edouard ULg

in Cahiers de Clio (1994), 117(11),

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See detailChloride and Inorganic Phosphate Modulate Binding of Oxygen to Bovine Red Blood Cells
Gustin, Pascal ULg; Detry, Benoît; Cao, M. L. et al

in Journal of Applied Physiology (Bethesda, Md. : 1985) (1994), 77(1), 202-208

The influence of Pi and Cl on the equilibrium of oxygen binding to bovine red blood cells was assessed by plotting the whole blood oxygen dissociation curve measured under standard conditions with and ... [more ▼]

The influence of Pi and Cl on the equilibrium of oxygen binding to bovine red blood cells was assessed by plotting the whole blood oxygen dissociation curve measured under standard conditions with and without added KCl and K2HPO4. Both salts shifted the oxygen dissociation curve to the right. This effect was more marked at the highest saturation levels. At a given saturation level, the anion-induced shift was linearly related to the concentration of salt added to the blood. Cl had a greater effect than Pi. The relationship between changes in Po2 at 50% hemoglobin saturation (in Torr) and concentrations of ions added (in mmol/l) was equal to 0.0515[Cl] + 0.0302[Pi] (r2 = 0.94; P < 0.001). These changes were not due to the hyperosmolality induced by salt addition, since sucrose added in place of salts was without effect on the measured parameters. The oxygen exchange fraction expressed as percentage of saturation, i.e., the difference in hemoglobin saturation when Po2 decreases from 130 to 40 Torr, was linearly correlated to added anion concentration (in mmol/l) (= 0.102[Cl] + 0.059[Pi] (r2 = 0.95; P < 0.001)). No significant interaction between the anions was observed; their effects were purely additive. This original mechanism of controlling the oxygen affinity of bovine blood may have clinical relevance: Cl and Pi could be used to increase oxygen transport efficiency in hypoxic animals [less ▲]

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See detailCARAIB - A global model of terrestrial biological productivity
Warnant, Pierre ULg; François, Louis ULg; Strivay, David ULg et al

in Global Biogeochemical Cycles (1994), 8(3), 255-270

CARAIB, a mechanistic model of carbon assimilation in the biosphere estimates the net primary productivity (NPP) of the continental vegetation on a grid of 1 degrees x 1 degrees in latitude and longitude ... [more ▼]

CARAIB, a mechanistic model of carbon assimilation in the biosphere estimates the net primary productivity (NPP) of the continental vegetation on a grid of 1 degrees x 1 degrees in latitude and longitude. The model considers the annual and diurnal cycles. It is based on the coupling of the three following submodels; a leaf assimilation model including estimates of stomatal conductance and leaf respiration, a canopy model describing principally the radiative transfer through the foliage, and a wood respiration model. Present-day climate and vegetation characteristics allow the discrimination between ecotypes. In particular, specific information on vegetation distribution and properties is successfully used at four levels; the leaf physiological level, the plant level, the ecosystem level, and the global level. The productivity determined by the CARAIB model is compared with local measurements and empirical estimates showing a good agreement with a global value of 65 Gt C yr(-1). The sensitivity of the model to the diurnal cycle and to the abundance of C-4 species is also tested. The productivity slightly decreases (10%) when the diurnal cycle of the temperature is neglected. By contrast, neglecting the diurnal cycle of solar irradiance produces unrealistically high values of NPP. Even if the importance of this increase would presumably be reduced by the coupling of CARAIB with a nutrient cycle model, this test emphasizes the key role of the diurnal cycle in a mechanistic model of the NPP. Uncertainties on the abundance and spatial distribution of C-4 plants may cause errors in the NPP estimates, however, as demonstrated by two sensitivity tests, these errors are certainly lower than 10% at the global scale as shown by two tests. [less ▲]

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See detailSuccessful removal of an intramedullary spinal paraganglioma from a dog
Poncelet, Luc; Snaps, Frédéric ULg; Jacobovitz, D. et al

in Journal of the American Animal Hospital Association (1994), 30(3), 213-216

An 11-year-old, mixed-breed dog suffering progressive asymmetric hind limb ataxia was diagnosed as having spinal cord compression at the L1 spinal level. An intramedullary, encapsulated tumor was ... [more ▼]

An 11-year-old, mixed-breed dog suffering progressive asymmetric hind limb ataxia was diagnosed as having spinal cord compression at the L1 spinal level. An intramedullary, encapsulated tumor was surgically removed. Tumor microscopic features, positive neuron-specific enolase (NSE) immunostaining, and Grimelius staining led to the diagnosis of paraganglioma. The dog was free from any neuroloaic signs 12 days after surgery. [less ▲]

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See detailTherapy for obesity--today and tomorrow.
Scheen, André ULg; Desaive, Claude ULg; Lefebvre, Pierre ULg

in Bailliere's Clinical Endocrinology and Metabolism (1994), 8(3), 705-27

Obesity poses a serious health hazard and its treatment is often disappointing. Besides conservative methods, the place of pharmacotherapy, very-low-calorie diets, and even, in selected cases, mechanical ... [more ▼]

Obesity poses a serious health hazard and its treatment is often disappointing. Besides conservative methods, the place of pharmacotherapy, very-low-calorie diets, and even, in selected cases, mechanical means or surgery can be considered. Effective drug treatment for obesity must reduce energy intake, or increase energy expenditure, or increase energy losses in faeces. All these possibilities have potential activities but also serious limitations. Current pharmacotherapy essentially uses anorectic drugs and the other approaches, although promising, are still under investigation. Of the anorectic compounds currently available, serotoninergic agents, like dexfenfluramine and fluoxetine, appear to have the most suitable pharmacological profile. Very-low-calorie diets could help in the short-term but should be associated with other approaches to increase the rate of long-term success. They must be well-balanced as macronutrients and micronutrients are concerned, be prescribed in well-selected patients under careful medical supervision, and not be followed longer than a few weeks. Surgery can provide palliation for severe obesity when all medical approaches have failed. It may consist in decreasing food intake (gastric procedures), affecting calorie absorption (intestinal shunting, biliopancreatic bypass), or removing localized excess fat (lipectomy, liposuction). Gastric reduction operations are safe and effective provided they are performed by experienced surgeons in well-selected patients. They can be considered now as the best option for a minority of patients with morbid and refractory obesity. Finally, in very selected patients, mechanical means (such as the waist cord) may also help losing weight and/or avoiding weight regain. Even if all these therapeutic approaches can be helpful, at least in some obese individuals, they also have important limitations so that prevention remains up to now the 'treatment' of choice for obesity. [less ▲]

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See detailA fuzzy approach to the definition of standardized visibility in fog.
Boreux, Jean-Jacques ULg; Duckstein, Lucien

in Applied Mathematics and Computation (1994), 61(2-3), 287-299

The problem of defining the physical concept of standardized visibility is addressed by means of a fuzzy logic approach. Assuming that several hypotheses hold, it is possible to evaluate a standardized ... [more ▼]

The problem of defining the physical concept of standardized visibility is addressed by means of a fuzzy logic approach. Assuming that several hypotheses hold, it is possible to evaluate a standardized visibility Vk (or meteorological visual range) as the ratio of a psychometric coefficient k and the extinction coefficient σ of the aerosol. The main disadvantage of this relationship due to Koschmieder stems from the fact that the meteorological visual range can be very different from visibility estimated by a human observer with normal sight. This is particularly true during fog extinction coefficient supplied by a transmissometer and the corresponding visibility evaluated by an expert. Calculations are performed according to two different approaches. First, a so-called fuzzy hyperbolic model based on a distance defined by Bardossy et al is presented, yielding a crisp (nonfuzzy) value of the coefficient k. Next, we use the multiplication of two fuzzy numbers, taken as triangular, to build an average fuzzy number k that accounts for the different values found in the literature. The defuzzification of k confirms the result obtained by the first approach. [less ▲]

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See detailMolecular Analysis Of The Ycr-242 Gene Encoding The Putative Mitochondrial Asparaginyl-Transfer-Rna Synthetase From Saccharomyces-Cerevisiae
Landrieu, I.; Vandenbol, Micheline ULg; Portetelle, Daniel ULg et al

in Archives Internationales de Physiologie de Biochimie et de Biophysique (1994), 102(2),

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See detailMetabolic clearance rate of insulin in type 2 diabetic patients treated with combined insulin and sulfonylurea therapy.
Castillo, M. J.; Scheen, André ULg; Lefebvre, Pierre ULg

in Revista Espanola de Fisiologia (1994), 50(1), 27-34

The metabolic clearance rate of insulin (MCRI) in 10 non-obese type 2 diabetic patients treated with either insulin alone or combined insulin plus sulfonylurea therapy is investigated. A classical 2-hour ... [more ▼]

The metabolic clearance rate of insulin (MCRI) in 10 non-obese type 2 diabetic patients treated with either insulin alone or combined insulin plus sulfonylurea therapy is investigated. A classical 2-hour euglycaemic hyperinsulinaemic glucose clamp using the artificial pancreas was performed in a randomized order after two 6-week periods of treatment: either with subcutaneous injections of insulin alone or with insulin plus oral administration of the sulfonylurea compound glipizide at the dose of 3 x 10 mg/day. The MCRI was calculated knowing the constant insulin infusion rate (0.1 U.kg-1.h-1) and measuring basal and steady-state plasma free insulin and C-peptide levels. When the test was performed at the end of the period of treatment with insulin plus glipizide and 30 min after the ingestion of the last dose of 10 mg glipizide, plasma C-peptide levels were significantly increased and steady-state free insulin levels tended to be slightly higher whereas the metabolic clearance rate of glucose was not affected. The MCRI was significantly reduced by glipizide from 23.3 +/- 2.9 to 18.9 +/- 2.0 ml.kg-1.min-1 p < 0.05. These results demonstrate that the sulfonylurea glipizide decreases the MCRI. This effect may play a role in the hypoglycemic action of sulfonylureas. [less ▲]

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See detailL'hyperthermie, une modalité oncologique pluridisciplinaire
Coucke, Philippe ULg; GUILLEMIN; RAIMONDI et al

in Médecine et Hygiène (1994), 52(2037), 1720-1722

L-hyperthermie consiste en l'élévation de la température du corps ou d'une de ses parties, par des moyens externes au-delà de 41°C. La chaleur a une activité cytotoxique propre et provoque une ... [more ▼]

L-hyperthermie consiste en l'élévation de la température du corps ou d'une de ses parties, par des moyens externes au-delà de 41°C. La chaleur a une activité cytotoxique propre et provoque une sensibilisation des cellules aux radiations ionisantes ou à la chimiothérapie. Le gain thérapeutique est environ de 2. Seules les tumeurs superficielles peuvent être traitées adéquatement par les moyens actuels. Les indications sont la palliation de tumeurs superficielles telles que les récidives loco-régionales du cancer du sein, les récidives ganglionnaires de cancers ORL et les cancers de la peau, en particulier les mélanomes [less ▲]

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See detailC'est le bouquet... Histoire d'un ornement typographique liégeois du XVIIIe siècle
Droixhe, Daniel ULg

in Gutenberg-Jahrbuch (1994), 69

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See detailLocalisation scintigraphique de tumeurs neuroendocrines et de leurs métastases par un analogue de la somatostatine: [111In-DTPA-d-phe1] octreotide
Beckers, Albert ULg; Pham, V. T.; Abs, R. et al

in Médecine & Chirurgie Digestives (1994), 23(3), 145-150

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See detailExpression and function of DRC-1 antigen.
Bosseloir, A. L.; Antoine, Nadine ULg; Heinen, Ernst ULg et al

in Advances in Experimental Medicine and Biology (1994), 355

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See detailL'entérotoxémie bovine en Belgique. I. Introduction et contexte bibliographique.
Manteca, C.; Daube, Georges ULg

in Annales de Médecine Vétérinaire (1994), 138

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See detailUniversal scaling laws and the QCD scale anomaly
Ripka, Georges; Jaminon, Martine ULg

in Physics Reports (1994), 242

An effective chiral Lagrangian is given which implements the QCD scale anomaly and the universal scaling law of hadron masses. It is used to study the pion mass and the coupling between quark and gluon ... [more ▼]

An effective chiral Lagrangian is given which implements the QCD scale anomaly and the universal scaling law of hadron masses. It is used to study the pion mass and the coupling between quark and gluon condensates in dense matter. [less ▲]

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See detailEffects of immunization against somatostatin on growth performances and growth hormone, insulin-like growth factor I and insulin plasma levels in young animals
Renaville, Robert ULg; Fernadez, J. J.; Sneyers, Myriam et al

in Zootecnica e Nutrizione Animale (1994), 20

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See detailLa reproduction des poissons de nos rivières.
Poncin, Pascal ULg

in Cahiers d'Ethologie (1994), 13(3), 317-342

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See detailImprovement Of Enzymatic-Synthesis Yields Of Flavor Acetates - The Example Of The Isoamyl Acetate
Razafindralambo, Hary ULg; Blecker, Christophe ULg; Lognay, Georges ULg et al

in Biotechnology Letters (1994), 16(3), 247-250

Isoamyl acetate synthesis was chosen as a model to improve flavour acetate yields by optimising the enzymatic reaction. Alcohol:acid molar ratio, temperature, water content and amount of enzyme effects ... [more ▼]

Isoamyl acetate synthesis was chosen as a model to improve flavour acetate yields by optimising the enzymatic reaction. Alcohol:acid molar ratio, temperature, water content and amount of enzyme effects were analyzed. The optimum values were respectively 4, 45 degrees C, 0,1% (w/v) and 0,5 g. In these conditions, the synthesis yield reached 80% after 24 h of reaction and was found 15 times greater than those already reported in the literature. [less ▲]

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See detailSequence-Analysis Of A 40-Kb Dna Fragment From Chromosome-X Of Saccharomyces-Cerevisiae
Vandenbol, Micheline ULg; Bolle, Pa.; Dion, C. et al

in Archives Internationales de Physiologie de Biochimie et de Biophysique (1994), 102(2),

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See detailModeles lineaires en genetique quantitative: synthese des connaissances actuelles.
Gengler, Nicolas ULg

in Bulletin des Recherches Agronomiques de Gembloux (1994), 29(1),

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See detailEpidemiology of insulin resistance and hypertension in adults - MONICA BELLUX- preliminary results.
Saint-Remy, Annie ULg; Beck, Dominique; Lefèbvre, Pierre ULg et al

in Cardiovascular Disease Epidemiology Newsletter, Amercian Heart Association (1994), 49

Numerous publications have outlined that insulin resistance, hypertension and obesity are often associated suggesting a common link in the pathogenic mechanisms.

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See detailThe coupling of quark and gluon condensates in hot and dense systems
Jaminon, Martine ULg; Van den Bossche, Bruno

in Nuclear Physics A (1994), 567

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See detailCauses de mortalité et teneur en métaux lourds de Guillemots de Troïl Uria aalge échoués le long du littoral belge.
Bouquegneau, Jean-Marie ULg; Debacker, Virginie ULg; Antoine, Nathalie et al

in Bulletin de la Société Royale des Sciences de Liège (1994), 63(1-2), 211-217

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See detailA semiautomated test apparatus for studying partner preference behavior in the rat.
Bakker, Julie ULg; van Ophemert, J.; Eijskoot, F. et al

in Physiology & Behavior (1994), 56(3), 597-601

A semiautomated three-compartment box (3CB) for studying partner preference behavior of rats is described. This apparatus automatically records the rat's time spent in each compartment, as well as the ... [more ▼]

A semiautomated three-compartment box (3CB) for studying partner preference behavior of rats is described. This apparatus automatically records the rat's time spent in each compartment, as well as the locomotor activity (i.e., the number of visits an animal pays to each compartment). Software was developed for calculating partner preference scores. Behavioral testing in the semiautomated 3CB, which is a modification of an earlier version, is less time consuming and less laborious. Three 3CBs can be observed simultaneously by two trained observers, and the behavioral interactions of three experimental animals with the stimulus animals can be observed and scored by hand. The use of the new apparatus was validated by studying adult partner preference behavior of neonatally ATD-treated male rats. The collected data fully corroborate previous results, obtained in the earlier version of the 3CB, again revealing the behavioral bisexual nature of these ATD males. A new finding was the much higher locomotor activity of the ATD males compared to controls. [less ▲]

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See detailModèles de cubage pour essences multi-tiges: application à des plantations d'acacia.
Lejeune, Philippe ULg; Rondeux, Jacques ULg

in Cahiers Agricultures (1994), 3(3),

Des tarifs de cubage individuels ont été construits pour estimer le volume de plantations d'Acacia auriculiformis A. Cunn. ex Benth destinées à la production de bois de feu. Ces tarifs fournissent, d'une ... [more ▼]

Des tarifs de cubage individuels ont été construits pour estimer le volume de plantations d'Acacia auriculiformis A. Cunn. ex Benth destinées à la production de bois de feu. Ces tarifs fournissent, d'une part, le volume total incluant le bois de tiges et de branches jusqu'à une découpe de 9 cm de circonférence et, d'autre part, ce volume réparti en classes de circonférences de 9 à 14 cm, 15 à 44 cm et plus de 45 cm. Cette essence est généralement abondamment ramifiée, ce qui complique la détermination de son volume et interfère avec la caractérisation d'une variable dendrométrique déterminante, à savoir la circonférence ou le diamètre à 1,30m au-dessus du niveau du sol. Lorsque plusieurs tiges sont observées à 1,30m de hauteur, il est proposé de considérer une circonférence théorique résultant de la somme quadratique des circonférences des brins mesurés à ce niveau. Différentes équations de cubage mettant en oeuvre les circonférences à la base de l'arbre (niveau d'abattage) ou à 1,30m, ainsi que la hauteur totale, l'âge et le nombre de brins, sont proposées pour des plantations âgées de quelques dizaines de mois. En termes de compromis entre précision des estimations et coût des mesures, l'équation faisant intervenir la circonférence à 1,30m, l'âge et le nombre de brins s'est avérée la plus satisfaisante. En ce qui concerne les estimations de volume par assortiments, applicables à des plantations plus âgées, les équations ne faisant intervenir que la seule circonférence à 1,3m sont largement acceptables. [less ▲]

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See detailDe réels progrès ont-ils été faits dans le traitement de l'ostéoporose ?
Reginster, Jean-Yves ULg; DEROISY, Rita ULg; Franchimont, P

in Medisearch (1994), 81

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See detailDerechef Ounamon, 2,13-14
Winand, Jean ULg

in Göttinger Miszellen (1994), 139

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See detailCrise de presse. Le journalisme au péril du « reportage » (France, 1870-1890)
Durand, Pascal ULg

in Quaderni : la Revue de la Communication (1994), 24(automne), 123-152

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See detailLe Monitoring de la pression artérielle en pratique médicale : apports et limites
Saint-Remy, Annie ULg; Rorive, Georges ULg

in Blood Pressure Profil (1994), 3

"L'article de Mme Saint-Remy et de G. Rorive constitue une bonne mise au point sur les controverses qui continuent à se développer autour de la place à réserver au monitorage ambulatoire de la pression ... [more ▼]

"L'article de Mme Saint-Remy et de G. Rorive constitue une bonne mise au point sur les controverses qui continuent à se développer autour de la place à réserver au monitorage ambulatoire de la pression artérielle (MAPA) dans l'évaluation du patient hypertendu. La variabilité importante universellement admise de la pression artérielle rend le concept du monitorage pendant 24 heures particulièrement attrayant. L'utilité de cette nouvelle approche ne sera cependant définitivement établie que quand les résultats d'études prospectives visant à démontrer la supériorité du MAPA sur la mesure conventionnelle de la pression artérielle seront connus. Deux études sont au minimum actuellement en cours en ce sens : l'étude OVA et l'étude Systeur. En attendant, le manque de valeurs normatives est évidemment un handicap pour l'intérêt de la MAPA dans la pratique journalière et ce d'autant plus que le coût de cette nouvelle méthodologie reste élevé. Dans la revue de la littérature de ce numéro de Blood Pressure Profile, deux publications viennent confirmer ce qui est avancé dans l'article de Mme Saint-Remy. Bianchi et col, observant que la microalbuminurie est plus importante chez les hypertendus en l'absence de chute nocturne de la pression artérielle, argumentent en faveur du rôle de la MAPA dans l'évaluation du pronostic cardio-vasculaire du patient hypertendu. De plus, Mansoor et al, confirmant la meilleure reproductibilité de MAPA par rapport à la mesure conventionnelle de la pression artérielle, concluent également que la MAPA permettra de diminuer le nombre de patients à inclure dans des essais de pharmacologie clinique. Ces résultats, bien qu'encourageant pour les défenseurs du MAPA, ne doivent cependant pas nous faire oublier que la généralisation de l'utilisation de cette nouvelle technique est à l'heure actuelle prématurée" Prof. J.P. Degaute, Hypertension Clinic, Hôpital Universitaire Erasme, Chief Editor [less ▲]

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See detailVers une théorie générale du signe
Badir, Sémir ULg

in Degrés : Revue de Synthèses à Orientation Sémiologique (1994), 79-80

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See detailBon anniversaire. Compte rendu de la Xe Table Ronde ‘Informatique et Égyptologie, Bordeaux, 1994’
Winand, Jean ULg

in Revue. Informatique et Statistique dans les Sciences Humaines (1994), 41

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See detailLes manifestations neurologiques de l'infection a Borrelia burgdorferi (maladie de Lyme).
PEPIN, Jean-Louis ULg; Bastings, Eric; Lenaerts, Marc ULg et al

in Revue Médicale de Liège (1994), 49(11), 603-10

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See detailAlienating Language and Darl's Narrative Consciousness in As I Lay Dying
Delville, Michel ULg

in The Southern Literary Journal (1994)

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See detailBI-BASED 2223 SUPERCONDUCTING POLYCRYSTALLINE MATERIALS PREPARED BY EITHER A SOLID-STATE ROUTE OR A GLASSY MATRIX PRECURSOR METHOD - CHEMICAL-ANALYSIS AS WELL AS ELECTRICAL AND THERMAL TRANSPORT-PROPERTIES
Cloots, Rudi ULg; Bougrine, Hassan ULg; HOUSSA, M. et al

in Physica C (1994), 231(3-4), 259-270

Two routes have been followed in order to prepare Bi1.7Pb0.3Sr2Ca2Cu3O(y) superconducting materials. Bi1.7Pb0.3CuO4 is always used as one of the starting basic materials. The first route involves a new ... [more ▼]

Two routes have been followed in order to prepare Bi1.7Pb0.3Sr2Ca2Cu3O(y) superconducting materials. Bi1.7Pb0.3CuO4 is always used as one of the starting basic materials. The first route involves a new experimental procedure based on the solid state synthesis of separate intermediate phases, mixed together in a two (Bi1.7Pb0.3CuO4 + 2SrCaCuO3), three (Bi1.7Pb0.3CuO4+2SrCuO2+2CaCO3) or four (Bi1.7Pb0.3CuO4+(1/12)Sr8Ca6Cu24O41 + (3/2)CaCO3 + (4/3)SrCO3) powder process. Electric resistivity versus temperature measurements are presented. Even though the T(c)(0) of each sample is above 100 K, X-ray diffraction shows that the main phase is the 2212 phase in each case. Relatively pure 2223 materials have, however, successfully been produced by the second method, which starts from a glassy intermediate phase and involves a so-called 'matrix' method. The glass precursor phase is composed of one (Bi1.7Pb0.3CuO4), two (Bi1.7Pb0.3CuO4 + 2CaCO3), and three (Bi1.7Pb0.3CuO4 + (3/2)CaCO3 + (4/3)SrCO3) components as for the solid state routes. The role of both the added alkaline earth crystalline compounds and the glass matrix precursors in this second method turns out to be very important. We propose a schematic structural model in order to explain the selectivity of the starting materials. SrCaCuO3 is found to be a good precursor of the 2212 phase, while SrCuO2 gives rise to the 2223 phase. It seems that the presence of CaCO3 in the glassy intermediate phase, thus acting as a cation reservoir, is very useful for the production of the 2223 phase. Electric resistivity, thermal conductivity and thermopower versus temperature measurements are also presented and discussed in terms of intergrowths and variations of cationic compositions in the Bi-based layers. [less ▲]

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See detailLe rêve du neurobiologiste
Gauthier, Jean-Marie ULg

in Revue Belge de Psychanalyse (1994), 25

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See detailAgglomérations morphologiques et fonctionnelles, l’apport de la télédétection urbaine
Donnay, Jean-Paul ULg

in Acta Geographica Lovaniensia (1994), 34

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See detailNONEQUILIBRIUM EFFECTS IN THE THERMAL-CONDUCTIVITY OF BI-BASED HIGH-TEMPERATURE SUPERCONDUCTORS
Bougrine, Hassan ULg; SERGEENKOV, S.; Ausloos, Marcel ULg et al

in Solid State Communications (1994), 91(7), 571-575

Thermal conductivity of two Bi-based high temperature superconducting ceramics, 2212 and 2223, with a markedly different microstructure have been examined. A pulse technique has been used. Depending on ... [more ▼]

Thermal conductivity of two Bi-based high temperature superconducting ceramics, 2212 and 2223, with a markedly different microstructure have been examined. A pulse technique has been used. Depending on the heating pulse duration, the more weak-links-containing 2223 sample shows either equilibrium or nonequilibrium behavior. The temperature dependence of the thermal conductivity between 110 K and 180 K is found to obey the Arrhenius law. The experimental observations are interpreted as a thermally activated heat flux motion through the polycrystalline grain boundaries with an energy barrier of nearly 10meV. It is likely due to a phase slip mechanism. An extra relaxation process due to the pore content/structure is thus emphasized in such regimes. [less ▲]

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See detailBioconversion of vanillin into vanillic acid by Pseudomonas fluorescens strain BTP9
Bare, Ghislain; Delaunois, Valérie; Rikir, Rafaelle et al

in Applied Biochemistry and Biotechnology (1994), 45/46

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See detailAnomalie pluviométrique négative sur le Sud-est du Zaïre en janvier 1992
Kalombo, K.; Erpicum, Michel ULg; Lahuec, J. P.

in Publications de l'Association Internationale de Climatologie (1994), 7

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See detailEffect of dopamine and baclofen on N-methyl-D-aspartate-induced burst firing in rat ventral tegmental neurons.
Seutin, Vincent ULg; Johnson, S. W.; North, R. A.

in Neuroscience (1994), 58(1), 201-6

Intracellular microelectrode recordings were made from dopamine-containing neurons of the ventral tegmental area or substantia nigra zona compacta in rat brain slices in vitro. The firing pattern of the ... [more ▼]

Intracellular microelectrode recordings were made from dopamine-containing neurons of the ventral tegmental area or substantia nigra zona compacta in rat brain slices in vitro. The firing pattern of the neurons was switched from a tonic, single-spike pattern to a burst firing mode by adding N-methyl-D-aspartate (20 microM) to the superfusing solution; after adding tetrodotoxin the membrane potential underwent rhythmical oscillations of 20-40 mV at 0.5-2 Hz. Baclofen (1 microM) and dopamine (30 microM) hyperpolarized the neurons; when the potential was restored to its original level, the oscillations of potential and/or burst firing were not observed, but the tonic firing pattern was restored. These effects of baclofen and dopamine were prevented by barium (1 mM), which also prevented the membrane hyperpolarization. Oscillations of membrane current of a similar frequency were observed when the somatic membrane was voltage-clamped at -60 mV; these were also blocked by barium (1 mM). It is concluded that the oscillations in membrane potential observed with N-methyl-D-aspartate are generated predominantly at a dendritic location which is not voltage-clamped with an electrode at the soma. Baclofen and dopamine inhibit the oscillations by increasing the potassium conductance and hyperpolarizing the dendrites. [less ▲]

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See detailA REMARKABLE AURORAL EVENT ON JUPITER OBSERVED IN THE ULTRAVIOLET WITH THE HUBBLE-SPACE-TELESCOPE
Gérard, Jean-Claude ULg; Grodent, Denis ULg; Prangé, R. et al

in Science (1994), 266(5191), 1675-1678

Two sets of ultraviolet images of the Jovian north aurora were obtained with the Faint Object Camera on board the Hubble Space Telescope. The first series shows an intense discrete are in near corotation ... [more ▼]

Two sets of ultraviolet images of the Jovian north aurora were obtained with the Faint Object Camera on board the Hubble Space Telescope. The first series shows an intense discrete are in near corotation with the planet. The maximum apparent molecular hydrogen emission rate corresponds to an electron precipitation of similar to 1 watt per square meter, which is about 30,000 times larger than the solar heating by extreme ultraviolet radiation. Such a particle heating rate of the auroral upper atmosphere of Jupiter should cause a large transient temperature increase and generate strong thermospheric winds. Twenty hours after initial observation, the discrete are had decreased in brightness by more than one order of magnitude. The time scale and magnitude of the change in the ultraviolet aurora leads us to suggest that the discrete Jovian auroral precipitation is related to large-scale variations in the current system, as is the case for Earth's discrete aurorae. [less ▲]

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See detailLa maladie de Lyme : une nouvelle maladie?
Mainil, Jacques ULg

in Annales de Médecine Vétérinaire (1994), 138

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See detailNescio als 'Animal Metaphysicum'
Yans, Baudoin ULg

in Spiegel der Letteren (1994), (1), 45-62

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See detailPretreatment minimal staging for non-small cell lung cancer: an updated consensus report
Goldstraw; Rocmansb; Ball et al

in Lung Cancer (1994), 11(supp 3), 1-4

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See detailDetection of early sympathetic cardiovascular neuropathy by squatting test in NIDDM.
Marfella, R.; Salvatore, T.; Giugliano, D. et al

in Diabetes Care (1994), 17(2), 149-51

OBJECTIVE--To determine the role of the squatting test in the detection of early sympathetic neuropathy in patients with non-insulin-dependent diabetes mellitus (NIDDM). RESEARCH DESIGN AND METHODS--Three ... [more ▼]

OBJECTIVE--To determine the role of the squatting test in the detection of early sympathetic neuropathy in patients with non-insulin-dependent diabetes mellitus (NIDDM). RESEARCH DESIGN AND METHODS--Three groups of nonsmoking, nonobese subjects were studied: 10 healthy subjects, 10 NIDDM patients without autonomic neuropathy (AN), and 10 NIDDM patients with AN defined by the presence of a pathological deep-breathing value. All subjects were given three postural tests: lying-to-standing, sitting-to-standing, and squatting test. Heart rate (HR) and finger arterial pressure were recorded with a noninvasive technique. RESULTS--Blood pressure (BP) fall (expressed as decremental area) was not significantly different among the groups at standing up after sitting or lying. By contrast, a significantly greater BP drop occurred in NIDDM patients with AN (1,123 +/- 245 mm2) compared with NIDDM patients without AN (460 +/- 232 mm2) or normal subjects (429 +/- 138 mm2, P < 0.001). The HR increase after all the orthostatic maneuvers was smaller in diabetic patients with AN (P < 0.01) compared with that recorded in other groups. Significant correlations were observed between BP fall after squatting and either the expiration:inspiration ratio at deep breathing (r = -0.77, P < 0.001) or the duration of diabetes (r = 0.76, P < 0.001). CONCLUSIONS--The intrinsic orthostatic load of the squatting test, which is greater than conventional postural maneuvers, makes the squatting test an easy and useful test to detect early orthostatic dysregulation in NIDDM. [less ▲]

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See detailEffects of immunization against somatostatin on growth performances and growth hormone - insulin-like growth factor I and insulin plasma levels in young bulls.
Renaville, Robert ULg; Sneyers, M.; Massart, Serge et al

in Zootecnica e Nutrizione Animale (1994), 20(4),

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