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See detailOn destabilizing implicit factors in discrete advection-diffusion equations
Beckers, Jean-Marie ULg

in Journal of Computational Physics (1994), 111(2), 260-265

In the present paper, we find necessary and sufficient stability conditions for a simple one-time step finite difference discretization of an N-dimensional advection-diffusion equation. Furthermore, it is ... [more ▼]

In the present paper, we find necessary and sufficient stability conditions for a simple one-time step finite difference discretization of an N-dimensional advection-diffusion equation. Furthermore, it is shown that when the implicit factors differ in each direction, a strange behavior occurs: By increasing one implicit factor in only one direction, a stable scheme can become unstable. It is thus suggested to use a single implicit direction (for efficient computing), or the same implicit factor in each direction. (C) 1994 Academic Press, Inc. [less ▲]

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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 detailDe l'école à l'entreprise ou le processus d esocialisation mis en échec
Robert, Jocelyne ULg

in Eucation-Formation (1994)

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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 detailThe Perturbed Tikhonov's Algorithm and Some of its Applications
Tossings, Patricia ULg

in RAIRO : Modélisation Mathématique et Analyse Numérique (Mathematical Modelling and Numerical Analysis) (1994), 28(2), 189-221

The proximal point algorithm has known these last years many developments connected with the expansion of the variational convergence theory. Motivated by this fact and inspired by the work of A. Tikhonov ... [more ▼]

The proximal point algorithm has known these last years many developments connected with the expansion of the variational convergence theory. Motivated by this fact and inspired by the work of A. Tikhonov and V. Arsénine in the context of convex optimization, we present a new algorithm for searching a zero of a maximal monotone operator on a real Hilbert space. We study the perturbed version of this algorithm and establish a critical comparison with the perturbed proximal point algorithm. We apply this new algorithm to convex optimization and to variational inclusions or, more particularly, to variational inequalities. [less ▲]

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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 detailEssai sur le rythme statuaire à la période protohistorique en Mésopotamie
Tunca, Önhan ULg

in Beiträge zur Altorientalischen Archäologie und Altertumskunde (1994)

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See detailChloride Permeability of Rat Brain Membrane Vesicles Correlates with Thiamine Triphosphate Content
Bettendorff, Lucien ULg; Hennuy, Benoît ULg; De Clerck, Anne et al

in Brain Research (1994), 652(1), 157-160

Incubation of rat brain homogenates with thiamine or thiamine diphosphate (TDP) leads to a synthesis of thiamine triphosphate (TTP). In membrane vesicles subsequently prepared from the homogenates ... [more ▼]

Incubation of rat brain homogenates with thiamine or thiamine diphosphate (TDP) leads to a synthesis of thiamine triphosphate (TTP). In membrane vesicles subsequently prepared from the homogenates, increased TTP content correlates with increased 36Cl- uptake. A hyperbolic relationship was obtained with a K0.5 of 0.27 nmol TTP/mg protein. In crude mitochondrial fractions from the brains of animals previously treated with thiamine or sulbutiamine, a positive correlation between 36Cl- uptake and TTP content was found. These results, together with other results previously obtained with the patch-clamp technique, suggest that TTP is an activator of chloride channels having a large unit conductance. [less ▲]

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See detailL’expérience pédagogique: «Rénovation de l’enseignement fondamental - Développement corporel des enfants de 21/2 ans à 12 ans».
Piéron, Maurice; Cloes, Marc ULg; Delfosse, Catherine et al

in Informations pédagogiques (1994), 10

Delmelle (1992) a clairement défini la philosophie général de l'expérience pédagogique: "Compte tenu des besoins, des structures administratives en vigueur, des disponibilités matérielles et humaines et ... [more ▼]

Delmelle (1992) a clairement défini la philosophie général de l'expérience pédagogique: "Compte tenu des besoins, des structures administratives en vigueur, des disponibilités matérielles et humaines et des contraintes budgétaires, la commission a défini, de la manière suivante, la philosophie d'une rénovation possible à échéance immédiate. (a) Dans l'enseignement fondamental, tout enfant doit pratiquer l'activité physique à raison d'une séance quotidienne; il est parfaitement possible d'agir en sorte que les activités et les structures générales de l'école ne soient pas bouleversées. ..." ... [less ▲]

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See detailRole des somatomedines/insulin-like growth factors dans la croissance ponderale foetale.
Renaville, Robert ULg; Falaki, M.; Burny, A. et al

in Bulletin des Recherches Agronomiques de Gembloux (1994), 29(3),

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See detailAn isozyme study in Bilberry (Vaccinium myrtillus ) 2. Mating system and genetic structure
Jacquemart, Anne Laure; Mahy, Grégory ULg; Raspé, Olivier et al

in Belgian Journal of Botany (1994), 127

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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 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 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 detailHST-FOC observations of a remarkable UV auroral event on Jupiter
Gérard, Jean-Claude ULg; Grodent, Denis ULg; Prangé, R. et al

in NASA STI/Recon Technical Report N (1994), 95

Two sets of UV (ultraviolet) images of the Jovian north aurora were obtained with the Faint Object Camera (FOC) on Hubble. The first series shows a very intense discrete arc in corotation with the planet ... [more ▼]

Two sets of UV (ultraviolet) images of the Jovian north aurora were obtained with the Faint Object Camera (FOC) on Hubble. The first series shows a very intense discrete arc in corotation with the planet. The maximum apparent H2 emission rate corresponds to an electron precipitation of approximately 1/sq Wm, a very large flux in comparison with the solar EUV (extreme ultraviolet) heating. The hugh particle heating rate of the auroral upper atmosphere of Jupiter is expected to cause a large transient temperature increase and generate strong thermospheric winds. Twenty hours later, the discrete arc had considerably decreased in brightness. The timescale and magnitude of the change in the UV aurora strongly suggests that the discrete Jovian auroral precipitation is related to large scale current system variations as are the Earth's discrete aurorae. [less ▲]

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See detailEvaluation de la fonction pulmonaire du cheval par la technique scintigraphique
Votion, Dominique ULg; Art, Tatiana ULg; Lekeux, Pierre ULg

in Annales de Médecine Vétérinaire (1994), 138

Scintigraphy of the respiratory system, a technique used extensively in human medecine, provides a direct and non-invasive measure of both total and regional ventilation and perfusion of each lung. This ... [more ▼]

Scintigraphy of the respiratory system, a technique used extensively in human medecine, provides a direct and non-invasive measure of both total and regional ventilation and perfusion of each lung. This article remind you some nuclear notions and describes scintigraphical techniques for horses. The resuits of studies suggest that ventilation! perfusion scintigraphy provides valuable additionnai informations on regional lung function that are not obtainable from conventional investigations. The mucociliary clearance rates from the trachea can be determinated using scintigraphy and the differenttherapeutic drugs, which are claimed to increase mucokinesis, are successively presented. Methods of radiation protection in equine nuclear medecine are described [less ▲]

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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 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 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 detailUn affranchi trop discret? : A propos des lignes 13-19 du P. Matr. Daris 2
Straus, Jean ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1994), LXIX(137), 127-131

Born of manumitted parents, Sarapion introduice himself as a freeborn though he too is a freedman. Observations on the way he got a patch of land and on the affective and sexual life of the slaves.

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

in Göttinger Miszellen (1994), 139

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See detailA Comparison of Cabergoline and Bromocriptine in the Treatment of Hyperprolactinemic Amenorrhea
Webster, J.; Piscitelli, G.; Polli, A. et al

in New England Journal of Medicine [=NEJM] (1994), 331(14), 904-909

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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 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 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 detailLe renouveau cosaque
Bachkatov, Nina ULg; Wilson, Andrew

in Transitions : Ex-Revue des Pays de L'est (1994), 35-1

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See detailEditorial comment intensive care
Lamy, Maurice ULg

in Current Opinion in Anaesthesiology (1994), 7

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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), 189-194

Tree-volume equations were devised to estimate the volume of wood (excluding bark) of Acacia auriculiformis A. Cunn ex Benth fuelwood plantations in Zaïre. The tables give the total volume of stems and ... [more ▼]

Tree-volume equations were devised to estimate the volume of wood (excluding bark) of Acacia auriculiformis A. Cunn ex Benth fuelwood plantations in Zaïre. The tables give the total volume of stems and branches to an upper girth limit of 9 cm, together with the volumes according to the following classes of girth : 9-14, 15-44 and over 45 cm. Because this species has a high proportion of multiple-stem trees (which begin forking below the breast-height level), girth at 1.30 m is a relatively meaningless concept. Taking the extent of this variable in tree volume estimation into account, various expressions of girth were investigated. Instead of considering each stem girth individually, a "standardised" girth at 1.30 m (from ground level) was adopted. For any given tree, this corresponds to the quadratic sum of all girths measured at 1,30 m. [less ▲]

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See detailVerticalization of behavior elicited by dopaminergic mobilization is qualitatively different between C57BL/6J and DBA/2J mice
Tirelli, Ezio ULg; Witkin, J. M.

in Psychopharmacology (1994), 116(2), 191-200

Behavioral effects of dopaminergic stimulation were compared for C57BL/6J mice and DBA/2J mice. Effects of apomorphine (APO) alone and in combination with cocaine (COC) were assessed using a time-sampling ... [more ▼]

Behavioral effects of dopaminergic stimulation were compared for C57BL/6J mice and DBA/2J mice. Effects of apomorphine (APO) alone and in combination with cocaine (COC) were assessed using a time-sampling technique that classified climbing and leaning in separate categories. Climbing occurred in DBA/2J mice only at doses of APO that were 16 times higher than the smallest effective dose in C57BL/6J mice, but relative to baseline values, effects were comparable. Whereas DBA/2J mice showed dose-dependent leaning under APO, C57BL/6J mice exhibited significantly increased leaning only after the highest APO dose. When given alone, COC produced significant climbing, but not leaning or gnawing, in either strain. COC potentiated APO-induced climbing and gnawing in both strains but did not consistently change APO-induced leaning in either strain. APO alone reduced locomotor activity and attenuated COC-induced hyperkinesia. ((c) 1997 APA/PsycINFO, all rights reserved) [less ▲]

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See detailINTERNATIONAL-CONFERENCE ON BARBUS - PRESENT AND FUTURE - FOREWORD
BERREBI, P.; Poncin, Pascal ULg

in Bulletin Francais De La Peche Et De La Pisciculture (1994), (334), 167-168

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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 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 detailChanges in glucose turnover parameters and improvement of glucose oxidation after 4-week magnesium administration in elderly noninsulin-dependent (type II) diabetic patients.
Paolisso, G.; Scheen, André ULg; Cozzolino, D. et al

in Journal of Clinical Endocrinology and Metabolism (1994), 78(6), 1510-4

The aim of the present study was to investigate the effects of magnesium supplementation on glucose uptake and substrate oxidation in noninsulin-dependent (type II) diabetic patients. Nine elderly non ... [more ▼]

The aim of the present study was to investigate the effects of magnesium supplementation on glucose uptake and substrate oxidation in noninsulin-dependent (type II) diabetic patients. Nine elderly non-obese noninsulin-dependent (type II) diabetic patients, treated by diet only, participated in the study, which was designed as randomized, double blind, and cross-over. Each patient was followed up for a prestudy period of 3 weeks before inviting him/her to receive placebo or magnesium supplementation (15.8 mmol/day) for 4 weeks. At the end of each treatment period, a euglycemic hyperinsulinemic glucose clamp with simultaneous D-[3-3H]glucose infusion and indirect calorimetry was performed. Magnesium supplementation resulted in significantly increased plasma and erythrocyte magnesium levels, whereas body weight and fasting plasma glucose did not change. In the last 60 min of the glucose clamp, insulin-mediated glucose disappearance, total body glucose disposal (24.5 +/- 0.4 vs. 28.2 +/- 0.7 mumol/kg.min; P < 0.005), and glucose oxidation (13.0 +/- 0.4 vs. 16.3 +/- 0.8 mumol/kg.min; P < 0.01) were increased after chronic magnesium supplementation. Endogenous glucose production, nonoxidative glucose disposal, lipid and protein oxidation, and insulin MCR were not affected. In conclusion, a 4-week magnesium supplementation improves insulin sensitivity and glucose oxidation in the course of a euglycemic-hyperinsulinemic glucose clamp in noninsulin-dependent diabetic patients. Long term studies are needed to determine whether magnesium supplementation is useful in the management of type II diabetes. [less ▲]

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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 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 detailLa rhétorique, la sémiotique et le comique
Defays, Jean-Marc ULg

in RSSI : Recherches Sémiotiques = RSSI: Semiotic Inquiry (1994), 14(3), 81-101

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See detailBovine Leukemia Virus
Kettmann, Richard ULg; Burny, A.; Callebaut, I. et al

in The Retroviridae (1994)

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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 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 detailNescio als 'Animal Metaphysicum'
Yans, Baudoin ULg

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

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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 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 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 detailEstimation of effective and total erythropoiesis in myelodysplasia using serum transferrin receptor and erythropoietin concentrations, with automated reticulocyte parameters.
Bowen, D. T.; Culligan, D.; Beguin, Yves ULg et al

in Leukemia : Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K (1994), 8(1), 151-5

The erythroid abnormality in patients with myelodysplasia (MDS) is multifactorial, with ineffective erythropoiesis and poor in vitro progenitor response to erythropoietin (EPO). Serum EPO concentration is ... [more ▼]

The erythroid abnormality in patients with myelodysplasia (MDS) is multifactorial, with ineffective erythropoiesis and poor in vitro progenitor response to erythropoietin (EPO). Serum EPO concentration is variable among patients for a given haemoglobin concentration. We studied 19 non-transfusion-dependent patients with MDS, and 13 healthy elderly control subjects in an attempt to define the factors governing variability in serum EPO and to further characterise the anaemia of MDS. Serum EPO concentration was appropriate for the degree of anaemia in 15/19 MDS patients, and was positively related to mean cell volume (MCV), mean cell haemoglobin (MCH), and percentage highly fluorescent reticulocytes (% HFR), but not to absolute or percentage reticulocyte count. Although the observed/predicted ratio for serum transferrin receptor (TfR) concentration was low in 12 of 19 MDS subjects, no relationship to haemoglobin concentration, reticulocytes or serum EPO was seen. Serum TfR was positively correlated with WBC and platelet counts. Serum TfR was higher in patients with sideroblastic anaemia than refractory anaemia. Standardized in vivo p50 was positively correlated to red cell 2,3 diphosphoglycerate concentration, although this was not the only factor influencing the oxygen dissociation curve. We conclude that effective erythroid output responsive to endogenous EPO drive in MDS is positively related to MCV, MCH and % HFR. Serum TfR may not represent effective output as precisely as % HFR, but may be proportional to total marrow erythropoietic activity. [less ▲]

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See detailTaqi Restriction-Fragment-Length-Polymorphisms For Growth-Hormone In Bovine Breeds And Their Association With Quantitative Traits
Sneyers, M.; Renaville, Robert ULg; Falaki, M. et al

in Growth Regulation (1994), 4(3),

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See detailAspects redistributifs de l'endettement public
Pestieau, Pierre ULg; Perelman, Sergio ULg

in La dette publique en Belgique (1994)

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See detailLongwave Sky Radiation Parametrizations
Aubinet, Marc ULg

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

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See detailImidazolidinones structurally-related to penicillins: synthesis, molecular modeling and biological evalutation
Marchand-Brynaert, Jacqueline; Lamotte-Brasseur, Josette; Dive, Georges ULg

in Drug Metabolism and Drug Interactions (1994), 11(2), 85-109

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See detailUne contrefaçon liégeoise exemplaire : les Œuvres du philosophe bienfaisant (1764)
Droixhe, Daniel ULg

in Bulletin de la Société Royale Le Vieux-Liège (1994), 265

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See detailComparison of Reproductive Performance in Belgian Dairy and Beef Cattle
Hanzen, Christian ULg; Laurent, Y.; Ward, W. R.

in Theriogenology (1994), 41(5), 1099-114

A computerized program was written to collect, evaluate and compare reproductive performance data of 2004 beef (Belgian Blue breed) and 1649 dairy (Friesian Holstein and German Red) cattle in 35 Belgian ... [more ▼]

A computerized program was written to collect, evaluate and compare reproductive performance data of 2004 beef (Belgian Blue breed) and 1649 dairy (Friesian Holstein and German Red) cattle in 35 Belgian herds (6 suckler beef herds, 9 milked beef herds and 20 dairy herds). Reproduction data were collected at monthly herd health visits. No difference in age at first calving was observed. Significant differences were observed among the 3 kinds of herds, and the best results were obtained in dairy herds for the calving interval, interval from calving to the first estrus, interval from calving to the first service and average number of days open. Concerning these parameters, first calvers had lower results than multiparous cows, mainly in suckler and milked beef herds. Significant differences were noted in the number of services per pregnancy. Heifers that had never calved presented the highest fertility. Primiparous beef cows had higher fertility than pluriparous cows. In dairy herds, pluriparous cows had higher fertility than primiparous cows. Estrus detection was better in milked beef herds than in suckled beef and dairy herds. Suckled beef herds had the lowest incidence of metritis and ovarian cysts of the three types of herds. Rates of abortion, overall culling and retained fetal membranes were similar in all the herds. The percentage of animals removed for infertility was highest in milked beef herds and lowest in dairy herds. Because 90% of the 1159 calvings recorded in the beef herds required a caesarean section, the reproductive performance of beef cattle represent results after caesarean section. [less ▲]

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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 detailLes enseignants dans l’expérience pédagogique d’éducation physique quotidienne en Communauté Française de Belgique. Perceptions et réactions
Delfosse, Catherine; Cloes, Marc ULg; Ledent, Maryse et al

in Revue de l'Education Physique (1994), 34(2-3), 89-98

Même dans une démarche pédagogique centrée sur l'enfant, l'enseignant reste le principal décideur. C'est lui qui sélectionne le contenu qu'il considère le plus adéquat aux habiletés et qualités de l ... [more ▼]

Même dans une démarche pédagogique centrée sur l'enfant, l'enseignant reste le principal décideur. C'est lui qui sélectionne le contenu qu'il considère le plus adéquat aux habiletés et qualités de l'enfant, choisir les formes d'organisation, dirige l'interaction en classe et veille à l'établissement du climat de travail le plus favorables à l'épanouissement de l'élève. ... [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 detailVariations of lyoluminescence with commercial origin of the dosimeters
Galand, Eric; Niezette, Jacques; Vanderschuren, Jacques et al

in Radiation Physics and Chemistry (1994), 43

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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 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 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 detailPump up the volume! Mogelijkheid en onmogelijkheid van het manifest in postmoderne tijden
Spinoy, Erik ULg

in De Zingende Zaag (1994), (24-25), 102-123

This article reflects on the fact that manifests are a predominantly modernist genre. In postmodern times, manifests can only reappear as simulations or parodies.

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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 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 detailTechnical Study of Some Major Parameters Influencing the Performances of an Aerosol Delivery Equipment Suitable for Calves
Genicot, Bruno; Peckova, M.; Close, Roland et al

in Veterinary Research (1994), 25(5), 468-77

Aerosol delivery equipment, suitable for the treatment of bovine respiratory dysfunctions and including 2 parallelly positioned jet nebulizers, was studied in depth in order to determine the optimal ... [more ▼]

Aerosol delivery equipment, suitable for the treatment of bovine respiratory dysfunctions and including 2 parallelly positioned jet nebulizers, was studied in depth in order to determine the optimal working conditions in the field. Indeed, some factors might reasonably alter the performance of this equipment. Among these factors, the influences of the parallel position of jet nebulizers (in order to accommodate the breathing requirements of the cattle and achieve a rapid treatment), of the long feed pipe delivering compressed air (in order to keep the animal away from the compressor unit), and finally of the ambient temperature were studied, this equipment being essentially used during the winter season. This equipment could accommodate the breathing needs of cattle weighing up to 225 kg if a pressure of 600 kPa was developed upstream to the nebulizers. The rate of atomization was significantly reduced when working at ambient air temperatures (272.25 K < T < 274.65 K) close to those encountered in winter. This was especially true when pressure upstream to the nebulizers did not exceed 500 kPa. The immersion of the feed pipe for compressed air in hot water led to an increase in the rate of atomization without raising evaporative water losses, and reduced the drop in temperature in the nebulizer solution. Finally, the rate of atomization significantly increased when the face mask including the nebulizers was maintained so that the nebulizers were in a vertical position or at an angle not less than 60 degrees with respect to the ground. [less ▲]

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See detailModifier les représentations de l'échec à l'école normale
Beckers, Jacqueline ULg

in Recherche en Education. Théorie & Pratique (1994), 18-19

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See detailIntensities of the doublet-quadruplet intersystem transitions in C II and N III
Biémont, Emile ULg; Delahaye, F.; Zeippen, C. J.

in Journal of Physics : B Atomic Molecular & Optical Physics (1994), 27

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

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

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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 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 detailLe Paléolithique supérieur de Moldavie. Recherches récentes
Noiret, Pierre ULg; López Bayón, Ignacio

in Bulletin de l'Association scientifique liégeoise pour la Recherche archéologique (1994), XXI

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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 detailMaastricht in beweging. Enkele bedenkingen na het Belgisch voorzitterschap van de Europese Unie
Flore, Daniel ULg; Troosters, R.

in Panopticon : Tijdschrift voor Strafrecht, Criminologie en Forensisch Welzijnswerk (1994)

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See detailSubcellular Localization and Compartmentation of Thiamine Derivatives in Rat Brain
Bettendorff, Lucien ULg; Wins, Pierre; Lesourd, Monique

in Biochimica et Biophysica Acta (1994), 1222(1), 1-6

The subcellular distribution of thiamine derivatives in rat brain was studied. Thiamine diphosphate content was highest in the mitochondrial and synaptosomal fractions, and lowest in microsomal, myelin ... [more ▼]

The subcellular distribution of thiamine derivatives in rat brain was studied. Thiamine diphosphate content was highest in the mitochondrial and synaptosomal fractions, and lowest in microsomal, myelin and cytosolic fractions. Only 3-5% of total thiamine diphosphate was bound to transketolase, a cytosolic enzyme. Thiamine triphosphate was barely detectable in the microsomal and cytosolic fraction, but synaptosomes were slightly enriched in this compound compared to the crude homogenate. Both myelin and mitochondrial fractions contained significant amounts of thiamine triphosphate. In order to estimate the relative turnover rates of these compounds, the animals received an intraperitoneal injection of either [14C]thiamine or [14C]sulbutiamine (isobutyrylthiamine disulfide) 1 h before decapitation. The specific radioactivities of thiamine compounds found in the brain decreased in the order: thiamine > thiamine triphosphate > thiamine monophosphate > thiamine diphosphate. Incorporation of radioactivity into thiamine triphosphate was more marked with [14C]sulbutiamine than with [14C]thiamine. The highest specific radioactivity of thiamine diphosphate was found in the cytosolic fraction of the brain, though this pool represents less than 10% of total thiamine diphosphate. Cytosolic thiamine diphosphate had a twice higher specific radioactivity when [14C]sulbutiamine was used as precursor compared with thiamine though no significant differences were found in the other cellular compartments. Our results suggest the existence of two thiamine diphosphate pools: the bound cofactor pool is essentially mitochondrial and has a low turnover; a much smaller cytosolic pool (6-7% of total TDP) of high turnover is the likely precursor of thiamine triphosphate. [less ▲]

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See detailPropriétés antifongiques de la microflore sporulée du netetu.
N'dir, B.; Hbid, Ch.; Cornelius, C. et al

in Cahiers Agricultures (1994), 3

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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 detailPuissance maximale aérobie d’enfants en âge d’école primaire participant ou non à une leçon quotidienne d’activités physiques
Ledent, Maryse; Delfosse, Catherine; Cloes, Marc ULg et al

in Revue de l'Education Physique (1994), 34(2-3), 69-75

Plusieurs études indiquent que, chez l'adulte, il existe une relation significative entre la pratique d'activités physiques et sportives et la diminution des facteurs de risque, surtout cardiovasculaire ... [more ▼]

Plusieurs études indiquent que, chez l'adulte, il existe une relation significative entre la pratique d'activités physiques et sportives et la diminution des facteurs de risque, surtout cardiovasculaire. En particulier, l'endurance qui découle d'une pratique régulière d'activités modérés à intenses de répercute sur la condition du système cardiovasculaire et réduit significativement les risques de troubles cardiaques. ... [less ▲]

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See detailTheoretical Conformational-Analysis And Synthesis Of Analogs Of The Heptapeptide Antibiotic K-582-A
Decoen, Jl.; Wathelet, Bernard ULg; Demeuse, F. et al

in International Journal of Peptide and Protein Research (1994), 43(1),

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See detailFollicular dendritic cells: whose children?
Heinen, Ernst ULg; Bosseloir, A.

in Immunology Today (1994), 15(5), 201-4

At the recent Germinal Centre Conference in Spa*, over 200 immunologists gathered to study the fate of lymph follicles, B- and T-cell selection, cell migration, accessory cells, and pathological ... [more ▼]

At the recent Germinal Centre Conference in Spa*, over 200 immunologists gathered to study the fate of lymph follicles, B- and T-cell selection, cell migration, accessory cells, and pathological conditions such as lymphoproliferative diseases and AIDS. Here, Ernst Heinen and Alain Bosseloir report on this fascinating field. [less ▲]

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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 detailTEMPERATURE-DEPENDENCE OF GROWTH, ENZYME-SECRETION AND ACTIVITY OF PSYCHROPHILIC ANTARCTIC BACTERIA
Feller, Georges ULg; Narinx, E.; Arpigny, J. L. et al

in Applied Microbiology & Biotechnology (1994), 41(4), 477-479

Five psychrophilic Antarctic bacteria have been selected for their capacity to secrete exoenzymes into culture medium. These strains are able to grow from 0 to about 25 degrees C. However, production of ... [more ▼]

Five psychrophilic Antarctic bacteria have been selected for their capacity to secrete exoenzymes into culture medium. These strains are able to grow from 0 to about 25 degrees C. However, production of lipase from Moraxella, alpha-amylase from Alteromonas haloplanctis, beta-lactamase from Psychrobacter immobilis and protease from Bacillus is maximal at temperatures close to that of their environment (-2 to 4 degrees C) and is strongly inhibited at higher temperatures. This thermal effect involves alterations in the secretory pathway in the upper range of temperatures, losses due to the enzyme thermal lability and in some cases to reduction in cell development. The apparent optimal activity temperature of these enzymes is between 30 and 40 degrees C, i.e. about 20 degrees C lower than that of their mesophilic counterparts. [less ▲]

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See detailMétaux lourds et isotopes stables du carbone dans la matière particulaire: distribution sur le plateau continental nord-ouest européen
Dauby, Patrick ULg; Mosora, Fiorentina; Frankignoulle, Michel et al

in Bulletin de la Société Royale des Sciences de Liège (1994), 63

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See detailGreffes de moelle dans les hémoglobinopathies
Beguin, Yves ULg

in Mini Acta (1994), 26

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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 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 detailSymbolic Verification with Periodic Sets
Boigelot, Bernard ULg; Wolper, Pierre ULg

in Lecture Notes in Computer Science (1994), 818

Symbolic approaches attack the state explosion problem by introducing implicit representations that allow the simultaneous manipulation of large sets of states. The most commonly used representation in ... [more ▼]

Symbolic approaches attack the state explosion problem by introducing implicit representations that allow the simultaneous manipulation of large sets of states. The most commonly used representation in this context is the Binary Decision Diagram (BDD). This paper takes the point of view that other structures than BDD's can be useful for representing sets of values, and that combining implicit and explicit representations can be fruitful. It introduces a representation of complex periodic sets of integer values, shows how this representation can be manipulated, and describes its application to the state-space exploration of protocols. Preliminary experimental results indicate that the method can dramatically reduce the resources required for state-space exploration. [less ▲]

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See detailA recombinant viral haemorrhagic septicaemia virus glycoprotein expressed in insect cells induces protective immunity in rainbow trout
Lecocq-Xhonneux, F.; Thiry, M.; Dheur, I. et al

in Journal of General Virology (The) (1994), 75

Viral haemorrhagic septicaemia (VHS) is a fish rhabdovirus infection of world-wide importance. Control policies have been established but the disease still causes heavy losses in fish farming. The ... [more ▼]

Viral haemorrhagic septicaemia (VHS) is a fish rhabdovirus infection of world-wide importance. Control policies have been established but the disease still causes heavy losses in fish farming. The development of a recombinant subunit vaccine was initiated to produce a safe and effective vaccine to protect fish against VHS. The VHS virus (VHSV) glycoprotein, which induces neutralizing antibodies in rainbow trout, was chosen for expression in insect cells using a baculovirus vector. The Mr of the recombinant protein estimated by SDS-PAGE was slightly lower than that of the native viral protein. The recombinant protein displayed different degrees of glycosylation and was recognized in ELISA by neutralizing antibodies. It was transported to the plasma membrane of insect cells where its ability to induce membrane fusion was preserved. The efficacy of the recombinant protein as a vaccine was compared with those of an inactivated and an attenuated vaccine. When injected intraperitoneally into rainbow trout, the baculo-virus-encoded protein was shown (i) to induce the synthesis of VHSV-neutralizing antibodies and (ii) to confer protection against virus challenge. Immunization performed by immersion failed. This is the first report of a recombinant vaccine that protects fish against VHSV. [less ▲]

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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 detailEffect of aspartate and glutamate on the oxoglutarate carrier investigated in rat heart mitochondria and inverted submitochondrial vesicles.
Hautecler, J.; Sluse-Goffart, C.-M.; Evens, A. et al

in Biochimica et Biophysica Acta-Bioenergetics (1994), 1185

Interaction of glutamate and aspartate with the oxoglutarate carrier was investigated in rat heart mitochondria or inverted submitochondrial particles. With mitochondria, glutamate and aspartate had no ... [more ▼]

Interaction of glutamate and aspartate with the oxoglutarate carrier was investigated in rat heart mitochondria or inverted submitochondrial particles. With mitochondria, glutamate and aspartate had no effect on the initial rate of oxoglutarate or malate uptake. With inverted submitochondrial vesicles, binding experiments indicated that aspartate bound to the oxoglutarate carrier on its matricial face and increased the affinity of the substrate binding site for malate but did not change the affinity for oxoglutarate. Glutamate had no effect on both substrate bindings. The dissociation constants of the binary substrate-carrier complexes on the matricial side were determined (1.28 +/- 0.15 mM for oxoglutarate and 2.22 +/- 0.26 mM for malate). These values, compared with those obtained previously on the cytosolic side of intact mitochondria, confirmed the asymmetry of the carrier in the native membrane (higher affinities on the cytosolic face). It is concluded that (1) aspartate and glutamate are not cytosolic effectors of the oxoglutarate carrier, (2) matricial aspartate is a positive effector of the binding of malate on the matricial side of the oxoglutarate carrier, and (3) such a characteristic may play a role in the regulation of the oxoglutarate carrier. Thus, it may be emphasized that (1) this observation is the first clear evidence of a well-defined 'sophisticated regulation' (allosteric) of a mitochondrial metabolite carrier, and (2) this regulation of the oxoglutarate carrier may have important consequences on the efficiency of reducing equivalent import in the matrix space by the malate-aspartate shuttle. [less ▲]

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