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See detailBilateral diaphragmatic paralysis in a pony
Amory, Hélène ULg; Lomba, Fernand; Lekeux, Pierre ULg et al

in Journal of the American Veterinary Medical Association [=JAVMA] (1994), 205(4), 587-591

An adult pony had a 1-month history of severe respiratory distress that was resistant to treatment and environmental changes. Results of blood gas analysis were indicative of alveolar hypoventilation ... [more ▼]

An adult pony had a 1-month history of severe respiratory distress that was resistant to treatment and environmental changes. Results of blood gas analysis were indicative of alveolar hypoventilation. Simultaneous recordings of thoracic and abdominal wall motion by inductance plethysmography, together with complete pulmonary mechanics evaluation that included transdiaphragmatic pressure monitoring, revealed complete passive behavior of the diaphragm during breathing. Because radiography, necropsy, and histologic examination did not reveal any major lesion to explain the clinical and functional observations, bilateral diaphragmatic paralysis was diagnosed [less ▲]

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See detailConséquences microcirculatoires et cellulaires de l'endotoxine
D'Orio, Vincenzo ULg

in Réanimation (1994), 1

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See detailChromosomal localization of the callipyge gene in sheep (Ovis aries) using bovine DNA markers
Cockett, N. E.; Jackson, S. P.; Shay, T. D. et al

in Proceedings of the National Academy of Sciences of the United States of America (1994), 91

A mutation causing muscular hypertrophy, with associated leanness and improved feed efficiency, has been recently identified in domestic sheep (Ovis aries). Preliminary results indicate that an autosomal ... [more ▼]

A mutation causing muscular hypertrophy, with associated leanness and improved feed efficiency, has been recently identified in domestic sheep (Ovis aries). Preliminary results indicate that an autosomal dominant gene may be responsible for this economically advantageous trait. We have exploited the conservation in sequence and chromosomal location of DNA markers across Bovidae to map the corresponding callipyge locus to ovine chromosome 18 using a battery of bovine chromosome 21 markers. Chromosomal localization of the ovine callipyge locus is the first step toward positional cloning of the corresponding gene. [less ▲]

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See detailTechnical Efficiency and Productivity Growth in an Era of Deregulation: the Case of Airlines
Distexhe, Véronique; Perelman, Sergio ULg

in Schweizerische Zeitschrift für Volkswirtschaft und Statistik = Revue Suisse d'Economie Politique et de Statistique (1994), (130), 669-689

In this paper we measure technical efficiency and productivity gains in airline activities. Non-parametric frontiers and Malmquist indices of productivity are estimated for thirty-three airlines observed ... [more ▼]

In this paper we measure technical efficiency and productivity gains in airline activities. Non-parametric frontiers and Malmquist indices of productivity are estimated for thirty-three airlines observed over the period 1977-1988. We identify three sources of growth: technological progress, efficiency change and route network characteristics. The results bring to light the reasons that pushed several airlines to merge when markets were deregulated. [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 detailDe limite en frontière : le monde à la mesure de l'homme
Bachelet, Jean-François ULg

in Revue de l'Institut de Sociologie (1994), 3-4

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See detailOpportunities for fine gold recovery from a copper flotation circuit using Knelson concentrator
Patchejieff, B.; Gaydardzhiev, Stoyan ULg; Lazarov, D.

in Minerals Engineering (1994), 7(2/3), 405-408

Experiments aimed at determination of the character of the gold observed in a copper ore processed by flotation, and also to evaluate the possibilities of improvement of the total gold recovery have been ... [more ▼]

Experiments aimed at determination of the character of the gold observed in a copper ore processed by flotation, and also to evaluate the possibilities of improvement of the total gold recovery have been carried out. The gravity equipment used was a 7.5" Knelson screen hydrostatic concentrator, reported of being capable of treatment and upgrading of up to 1000 times raw material with about 30% hypothetical concentration of heavy flotation sized particles. The gold-to-sulfides ratio obtained during the various runs was chosen as a general criterion for the type of gold presented (free or locked) and for the gravity approach feasibility. [less ▲]

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See detailLa crise suicidaire de l'adolescent, un appel à la vie
Malchair, Alain ULg

in Observatoire : Revue d'Action Sociale & Médico-Sociale (1994), 2

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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 detailHereditary muscular hypertrophy in cattle is associated with a reduced myocardial contractility
Amory, Hélène ULg; Mc Entee, Kathleen ULg; Linden, Annick ULg et al

in Pflügers Archiv : European Journal of Physiology (1994), 426

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See detailSynthesis and biodistribution of [5-131I]iodotropapride: a potential D2 dopamine receptor imaging agent.
Cantineau, Robert; Guillaume, Marcel; Damhaut, Philippe et al

in Nuclear Medicine & Biology (1994), 21(2), 255-62

[5-131I]Iodotropapride is a benzamidic compound which displays high affinity and selectivity for dopaminergic receptors. It was prepared from the corresponding brominated compound by a nucleophilic ... [more ▼]

[5-131I]Iodotropapride is a benzamidic compound which displays high affinity and selectivity for dopaminergic receptors. It was prepared from the corresponding brominated compound by a nucleophilic substitution with [131I]iodine (t1/2 = 8.02 days, E gamma = 364 keV) based on the use of Cu(I) as catalyst and high specific activity of [131I]NaI. After i.v. injection in rats the tracer crosses the blood-brain barrier (0.42 +/- 0.06% of injected dose in the total brain) and demonstrates a high affinity binding to the striatum. The striatum-to-cerebellum ratio increases with time and reaches values of 9 and 22 at 30 and 120 min after injection, respectively. This specific uptake in the striatum is saturable and can be blocked by pretreatment with different D2 antagonists. When labeled with 123I (t1/2 = 13 h, E1 = 159 keV), the corresponding [123I]iodotropapride may be useful for the investigation of the D2 dopamine receptors in humans with single photon emission computer tomography (SPECT). [less ▲]

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See detailTHE BLOOD PROTEINS OF THE ANTARCTIC ICEFISH CHANNICHTHYS-RHINOCERATUS - BIOLOGICAL SIGNIFICANCE AND PURIFICATION OF THE 2 MAIN COMPONENTS
Feller, Georges ULg; Poncin, A.; Aittaleb, M. et al

in Comparative Biochemistry and Physiology. B : Comparative Biochemistry (1994), 109(1), 89-97

The lack of hemoglobin and of carbonic anhydrase in the blood of icefish suggest that substantial adaptations of the acid-base balance should occur in order to ensure blood pH homeostasis. The level of ... [more ▼]

The lack of hemoglobin and of carbonic anhydrase in the blood of icefish suggest that substantial adaptations of the acid-base balance should occur in order to ensure blood pH homeostasis. The level of peptidic histidyl and of reactive -SH groups per unit of body mass in icefish plasma are 12-13 times higher that those of Notothenia rossii, a common red-blooded Antarctic species. It is proposed that the high level of imidazole ring in icefish plasma improves the non-bicarbonate buffering capacity and that the reactive sulfhydryls are involved om a redox buffer as in some other hypoxia tolerant species. After plasma fractionation on Ultrogel AcA 34, the two main icefish serum proteins have been purified by DEAE cellulose chromatography (IFI) and by HPLC on anion exchange column (IF2). IFI has been identified as a cysteine-rich para-albumin and IF2 as an histidine-rich immunoglobulin-like protein. [less ▲]

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See detailPilot trial of combined administration of erythropoietin and granulocyte colony-stimulating factor to children undergoing allogeneic bone marrow transplantation.
Locatelli, F.; Zecca, M.; Ponchio, L. et al

in Bone Marrow Transplantation (1994), 14(6), 929-35

We carried out a pilot study to evaluate the combined use of recombinant human erythropoietin (rhEpo) and granulocyte colony-stimulating factor (G-CSF) for accelerating marrow engraftment in children ... [more ▼]

We carried out a pilot study to evaluate the combined use of recombinant human erythropoietin (rhEpo) and granulocyte colony-stimulating factor (G-CSF) for accelerating marrow engraftment in children given allogeneic bone marrow transplantation (BMT). Fifteen consecutive children were enrolled in this study; 13 completed it and were evaluable. Using analysis of variance, laboratory and clinical data referring to these children were compared with those of 15 patients previously treated with rhEpo alone and with those of 16 historical controls. Erythroid repopulation, evaluated sequentially through serum transferrin receptor and reticulocyte count, was similarly accelerated in children receiving rhEpo alone and in those receiving combined treatment. These latter, however, showed a further reduction in the total number of red blood cell units required to reach transfusion independence (1.1 +/- 0.7 in the study population vs 2.7 +/- 1.2 in rhEpo group vs 4.2 +/- 2.3 in historical controls; values are mean +/- 1 SD; p < 0.001). Neutrophil engraftment, i.e. time for neutrophils to reach 0.5 x 10(9)/l, was 11 +/- 3 days in children receiving combined treatment, significantly shorter than that of the control groups (16 +/- 3 and 18 +/- 5, respectively; p < 0.001). Acceleration of neutrophil recovery translated into fewer infections: days of fever were significantly reduced in the study population (4 +/- 2 vs 11 +/- 8 vs 15 +/- 6, respectively).(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailSpectrum analysis of diaphragmatic global electromyograms in cattle, with special regard to appropriate strategy for detection of fatigue.
Desmecht, Daniel ULg; Linden, Annick ULg; Close, R. P. et al

in American Journal of Veterinary Research (1994), 55

Although the respiratory tract of healthy and diseased cattle has been intensively studied during the past few years, only a few attempts to detect dysfunctions of bovine inspiratory muscles have been ... [more ▼]

Although the respiratory tract of healthy and diseased cattle has been intensively studied during the past few years, only a few attempts to detect dysfunctions of bovine inspiratory muscles have been reported. Such technique would be useful in assessing the possibility of inspiratory muscle fatigue in the context of ventilatory failure. Fatigue in skeletal muscle is associated with characteristic changes in the electromyographic power spectrum. Power spectral analysis was therefore applied to cattle diaphragmatic electromyograms (EMGdi) to precisely determine the exact influence of motion and ECG artifacts, describe its basic frequency content, and extract a spectral index capable of providing an accurate warning of fatigue. The EMGdi was recorded via intramuscularly placed fishhook electrodes in 5 healthy young bulls during resting and stimulated respiration. The EMGdi and EGC signals were analyzed by use of power spectral density analysis after band-pass filtering (20 to 1,800 Hz). The EMGdi spectrum was concentrated in the band width 20 to 530 Hz. Electrode motion artifacts were absent, and it was always possible to find an electrode pair giving ECG-free EMGdi. Of the 12 power and frequency values used to quantitate the spectrum, the most stable was the centroid frequency. It was reproducible within and between calves and was only minimally altered by changing inspiratory load.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailMicroencapsulation by Coacervation of Poly(lactide-co-glycolide). III. Characterization of the Final Microspheres
Nihant, Nicole; Stassen, Sophie; Grandfils, Christian ULg et al

in Polymer International (1994), 34

This paper deals with protein microencapsulation by coacervation of poly(lactide-co-glycolide) solutions in CH2Cl2 induced by the addition of silicone oils of various viscosities. This coating technique ... [more ▼]

This paper deals with protein microencapsulation by coacervation of poly(lactide-co-glycolide) solutions in CH2Cl2 induced by the addition of silicone oils of various viscosities. This coating technique proceeds along three steps: phase separation of the coating polyester, adsorption of the coacervate droplets around the protein phase, and hardening of microparticules. Size distribution, surface morphology and internal porosity of the final microspheres clearly depend on the main characteristics of the coacervate, particularly the viscosity, in a direct connection with the CH2Cl2 content. Indeed, the whole porosity (which may be as high as 80%), average pore size and broadness of pore size distribution decrease as the coacervate is more viscous. Hardening of the coacervate droplets is thus so fast that the organic solvent is entrapped within the polymer matrix and predetermines the internal porosity. Finally, size distribution of microspheres is bimodal in a clear relation with the coacervate viscosity. A less viscous coacervate favours smaller microspheres (within the 7-90 µm range), contaminated with a minor population of microparticles below 4 µm. [less ▲]

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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 detailUn formalisme unique peut-il décrire les phénomènes acoustiques et lumineux ?
Embrechts, Jean-Jacques ULg

in Bulletin d'Acoustique (1994), 16

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See detailEvolution of shoot density of the Posidonia seagrass bed of Calvi Bay (Corsica)
Soullard, Mady; Bourge, Isabelle; Fogel, Julie et al

in Vie et Milieu (1994), 44

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See detailPyoverdine production is not the sole trait involved in the biological control of soil diseases by Pseudomonas fluorescens ATCC 17400.
Jacques, Philippe ULg; Cornelis, P.; Gaballa, A. et al

in Archives Internationales de Physiologie, de Biochimie et de Biophysique (1994), 102(B81),

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See detailSTRUCTURAL AND KINETIC CHARACTERIZATION OF A BETA-LACTAMASE-INHIBITOR PROTEIN
STRYNADKA, N. C. J.; JENSEN, S. E.; JOHNS, K. et al

in Nature (1994), 368(6472), 657-660

THE past decade has seen an alarming worldwide increase in resistance to beta-lactam antibiotics among many pathogenic bacteria1, which is due mainly to plasmid- or chromosomally encoded beta-lactamases ... [more ▼]

THE past decade has seen an alarming worldwide increase in resistance to beta-lactam antibiotics among many pathogenic bacteria1, which is due mainly to plasmid- or chromosomally encoded beta-lactamases that specifically cleave penicillin and cephalosporins, rendering them inactive. There is therefore a need to develop new strategies in the design of effective inhibitors of beta-lactamase. All the small-molecule inhibitors in clinical use are not very effective and are rapidly degraded2,3. Furthermore, newly characterized mutants of the plasmid-mediated beta-lactamase TEM-1 are highly resistant to these small-molecule inhibitors, including clavulanic acid and tazobactam4. It has been shown that Streptomyces clavuligerus produces an exocellular beta-lactamase inhibitory protein (BLIP; M(r) 17.5 K)5. Here we present data defining BLIP as the most effective known inhibitor of a variety of beta-lactamases, with K(i) values in the subnanomolar to picomolar range. To identify those features in BLIP that make it such a potent inhibitor, we have determined its molecular structure at 2.1 angstrom resolution. BLIP is a relatively flat molecule with a unique fold, comprising a tandem repeat of a 76-amino-acid domain. Each domain consists of a helix-loop-helix motif that packs against a four-stranded antiparallel beta-sheet (Fig. 1a). To our knowledge, BLIP is the first example of a protein inhibitor having two similarly folded domains that interact with and inhibit a single target enzyme. [less ▲]

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See detailENANTIOSELECTIVE SYNTHESES OF NCA (S)-L-[BETA-C-11]-4-CHLOROPHENYLALANINE AND (S)-L-(ALPHA-METHYL)-[BETA-C-11]-4-CHLOROPHENYLALANINE
Plenevaux, Alain ULg; Al-Darwich, M. J.; Lemaire, Christian ULg et al

in Applied Radiation & Isotopes (1994), 45(3), 361-369

The radiolabeling of (S)-L-4-chlorophenylalanine and (S)-L-(alpha-methyl)-4-chlorophenylalanine were realized with carbon-11 at position beta through a radiochemical synthesis relying on the highly ... [more ▼]

The radiolabeling of (S)-L-4-chlorophenylalanine and (S)-L-(alpha-methyl)-4-chlorophenylalanine were realized with carbon-11 at position beta through a radiochemical synthesis relying on the highly enantioselective reaction between 4-chloro[alpha-C-11]benzyl bromide and the lithium enolate of (S)-1-(t-butyloxycarbonyl)-2-(t-butyl)-3-methyl-1,3-imidazolidine-4-one for (S)-L-[beta-C-11]-4-chlorophenylalanine and of (2S,5S)-1-(t-butyloxycarbonyl)-2-(t-butyl)-3,5-dimethyl-1,3-imidazolidin e-4-one for (S)-L-(alpha-methyl)-[beta-C-11]-4-chlorophenylalanine. Quantities of about 25-35 mCi were obtained at the end of synthesis, ready for injection, after hydrolysis and HPLC purification with a radiochemical yield of 19% corrected to EOB within 45 min. The enantiomeric excesses were shown to be greater than or equal to 97% for both molecules without chiral separation. The radiochemical and the chemical purities of the final compounds were greater than or equal to 98% and the specific activity at the end of synthesis ranged between 250-800 mCi/mu mol. [less ▲]

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See detailFlow modeling in an underground gasifier at great depth by the Boundary-Element Method
MATHY, B.; PIRLOT, Pierre; Pirard, Jean-Paul ULg et al

in In Situ (1994), 18(4), 399-418

In order to simulate the cavity growth of an underground gasifier in thin seams at great depth, Wilks1 has developed an original model that solves the continuity equation in the horizontal plane with the ... [more ▼]

In order to simulate the cavity growth of an underground gasifier in thin seams at great depth, Wilks1 has developed an original model that solves the continuity equation in the horizontal plane with the hypothesis of radial fluid flow around the injection well. In the model presented here, the continuity equation in the horizontal plane has been taken into account, removing the limiting assumption on flow (radial direction) assumed by Wilks. The simultaneous solution of the continuity equation and the Darcy law has been carried out using the Boundary Element Method (BEM); this method is particularly suitable for solving problems where boundary conditions are of prime importance. The model enables the influences of the permeability of the medium and gasifier geometry to be demonstrated. [less ▲]

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See detailRedox Mechanism For The Chaperone Activity Of Heat-Shock Proteins Hsp-60, Hsp-70 And Hsp-90 As Suggested By Hydrophobic Cluster-Analysis - Hypothesis
Callebaut, I.; Catelli, Mg.; Portetelle, Daniel ULg et al

in Comptes Rendus de l'Académie des Sciences. Série III, Sciences de la Vie (1994), 317(8),

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See detailConstruction d'un modèle de répartition des arbres par classes de grosseur pour des plantations d'épicéa commun (Picea abies L Karst) en Ardenne belge
Lejeune, Philippe ULg

in Annales des Sciences Forestières (1994), 51(1), 53-65

The construction of a girth distribution model for Norway spruce (Picea abies L Karst) plantations has been considered using 141 sample plots of 1 000 m². The effects of the theoretical distribution ... [more ▼]

The construction of a girth distribution model for Norway spruce (Picea abies L Karst) plantations has been considered using 141 sample plots of 1 000 m². The effects of the theoretical distribution (comparison of the normal and Weibull distributions) and the estimation methods have been analysed. Despite the higher flexibility of the Weibull distribution, its use does not lead to a more accurate prediction of the distribution. The small number of samples measured in the plots seems to be the primary cause of the inaccuracy of the various models. Considering the data analysed, the normal distribution, which is easier to use, is proving to be more suitable for the creation of distribution model for such stands. [less ▲]

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See detailFluid transfer in anorthosites and related rocks from Rogaland (Southwest Norway): Evidence from stable isotopes
Wilmart, Edith; Pineau, Françoise; Réjou-Michel, A. et al

in Earth & Planetary Science Letters (1994), 125

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See detailLifetime Measurements for the 4p2P° and 5p2P° Levels and calculation of Transition Probabilities in Na I
Lowe, R. M.; Biémont, Emile ULg

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

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See detailEffet du chargement et de la période de complémentation au pâturage sur les performances de taurillons finis en stabulation
Dufrasne, Isabelle ULg; Gielen, Marc ULg; Limbourg, Pierre et al

in Annales de Médecine Vétérinaire (1994), 138

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See detailLe financement au niveau communal
Jurion, Bernard ULg

in Mouvement communal, Union des Villes et des Communes de Belgique (1994)

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See detailImmunohistochemical analysis of estrogen and progesterone receptors in endometrium and peritoneal endometriosis: a new quantitative method.
NISOLLE, Michelle ULg; Casanas-Roux, Françoise; Wyns, Christine et al

in Fertility and Sterility (1994), 62(4), 751-9

Objective: To evaluate estrogen receptors (ER) and progesterone receptors (PR) content in glandular and stromal cells of eutopic and ectopic endometrium. DESIGN: A recently advanced stereographic computer ... [more ▼]

Objective: To evaluate estrogen receptors (ER) and progesterone receptors (PR) content in glandular and stromal cells of eutopic and ectopic endometrium. DESIGN: A recently advanced stereographic computer technology was applied for the investigation of steroid receptors. SETTING: University hospital department of gynecology. PATIENTS: Biopsies of endometrium and typical peritoneal endometriotic lesions were taken from 19 infertile patients with laparoscopically proved endometriosis. Endometrial biopsies were also taken from 15 patients without endometriosis. All of them were untreated. RESULTS: In normal endometrium, the highest concentrations of ER and PR occurred in the epithelial and stromal cells during the late proliferative phase of the menstrual cycle. Estrogen receptor and PR content declined throughout the secretory phase. Progesterone receptor content was found not to be significantly decreased in the stroma during the early secretory phase and quite high in the late secretory phase. In peritoneal endometriotic lesions, the highest concentrations of ER and PR were found during the late proliferative phase. When compared with normal endometrium, a lower ER content ans a similar PR content were observed, and the cyclic changes in peritoneal endometriosis lesions were also similar. CONCLUSION: A new computerized technology for the evaluation of ER and PR in eutopic and ectopic endometrium. Although the ER content was found to be lower in endometriotic tissue when compared with endometrium, the cyclic pattern was similar in both eutopic and ectopic endometrium. Progesterone receptor content was similar in both tissues, except during the late secretory phase in ectopic glandular epithelium in which a high persistent PR content was observed. [less ▲]

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See detailCloning And Characterization Of Mn, A Human Tumor-Associated Protein With A Domain Homologous To Carbonic-Anhydrase And A Putative Helix-Loop-Helix Dna-Binding Segment
Pastorek, J.; Pastorekova, S.; Callebaut, I. et al

in Oncogene (1994), 9(10),

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See detailEndoscopic management of ectopic pregnancy.
Donnez, Jacques; NISOLLE, Michelle ULg

in Bailliere's Clinical Obstetrics & Gynaecology (1994), 8(4), 707-2

The rationale for the conservative management of ectopic pregnancy is the preservation of reproductive potential. Removal of trophoblast through a linear incision (salpingotomy) can be easily performed by ... [more ▼]

The rationale for the conservative management of ectopic pregnancy is the preservation of reproductive potential. Removal of trophoblast through a linear incision (salpingotomy) can be easily performed by endoscopy. The injection of vasopressin into the broad ligament is required in less than 10% of cases and its routine use is not recommended because of the risk of severe side-effects. The techniques in cases of isthmic or cornual tubal pregnancy are also described. Other alternatives such as expectant management, methotrexate, RU 486 and prostaglandins have also recently been proposed. Although methotrexate therapy has been demonstrated to be effective in cases of unruptured tubal pregnancy, further studies are needed to determine whether or not this medical therapy is a safer option than laparoscopic surgery and to compare the subsequent intrauterine and recurrent ectopic pregnancy rates. Endoscopic salpingotomy is an efficacious procedure. Indeed, residual trophoblast is found in only 5% of cases after this surgical procedure. In these cases of persistent trophoblast, methotrexate is proposed as the medical approach of choice. Evaluation of the postoperative fertility after linear salpingotomy demonstrates an intrauterine pregnancy rate of 63% and a recurrent ectopic pregnancy rate of 8%. In conclusion, endoscopic management of tubal pregnancy is a safe and efficacious therapy. The contraindications are relative and depend essentially on the surgeon's experience. [less ▲]

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See detailL'enseignement du français instrumental à l'université: quelles possibilités?
Vanden Berghe, Kristine ULg; Sanctobin, Véronique; Slootmaekers, An et al

in Rencontres (1994), 5

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See detailEffect of the emulsion stability on the morphology and porosity of semicrystalline poly-L-lactide micriparticles prepared by w/o/w double emulsion-evaporation
Schugens, Ch; Laruelle, N; Nihant, N et al

in Journal of Controlled Release (1994), 32

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See detailPossessoire, pétitoire, référé, plainte, bornage et revendication ...Quand tout s'emmêle!
Lecocq, Pascale ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (1994)

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See detailHamartome angiomateux eccrine néonatal en plaques plurifocales
Benzarti, H.; Fazaa, B.; Ben Hamida, H. et al

in Giornale Internazionale di Dermatologia Pediatrica (1994), 6(1), 15-17

We report a case of eccrine angiomatous hamartoma disclosed in a 5-year-old girl. The lesion was painful and multifocal in plaques on a forearm. The diagnosis was made on the basis of histologic and ... [more ▼]

We report a case of eccrine angiomatous hamartoma disclosed in a 5-year-old girl. The lesion was painful and multifocal in plaques on a forearm. The diagnosis was made on the basis of histologic and immunohistochemistric assays. This conditions must be distinguished from other neonatal angiomatoses. [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 detailLa pompe musculo-veineuse de la personne âgée
Petermans, Jean ULg; Zicot, M.

in Journal des Maladies Vasculaires (1994), 19(2), 115-8

We study the musculo-venous pump in an elderly population, free of venous disease, by use of a digitized photoplethysmograph. We measure the venous refilling time (To) and the venous drainage (Vo) during ... [more ▼]

We study the musculo-venous pump in an elderly population, free of venous disease, by use of a digitized photoplethysmograph. We measure the venous refilling time (To) and the venous drainage (Vo) during active and passive movement. In the first part, we measure Vo and To during active and passive ankle flexions among 17 patients (34 limbs) aged 82.2 years. These variables are compared to the results of the same measurements obtained among 15 young adults aged 45.1 years (30 limbs). We find that To and Vo are significantly lower in the oldest population (To j 35.9 +/- 4.8 sec, To aged 16.1 +/- 5.2 sec, p < 0.001, Vo j 4.98 +/- 1.1%, Vo ag 2.97 +/- 1%, p < 0.001). In the second part of this work, a passive massage of the calf is substituted to the ankle flexions. This technique is applied to 19 elderly people aged 80.4 years (37 limbs) compared to 6 young adults aged 24 years (12 limbs). In these conditions the comparison is no more in favour of the younger group (To j 37 +/- 7.5 sec, To ag 30.6 +/- 4.1 sec, Vo j 4.03 +/- 1.5%, Vo ag 3.8 +/- 0.06%). The values measured in the elderly group are in the range of normal values. We conclude that senescence does not alter the venous system itself. The present work confirms the influence of extravascular factors as muscles, understanding and coordination of the motions, articular flexibility, on the performance of the musculo venous pomp. As far as possible, the muscular and articular activity has to be encouraged in elderly people in order to reduce the venous stasis. [less ▲]

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See detailQuantitative Assessment of Aerial Ammonia Toxicity to the Nasal Mucosa by Use of the Nasal Lavage Method in Pigs
Urbain, B.; Gustin, Pascal ULg; Prouvost, J. F. et al

in American Journal of Veterinary Research (1994), 55(9), 1335-1340

Effects of atmospheric ammonia (NH3) on the nasal mucosa and somatic growth were investigated in pigs exposed to 4 NH3 concentrations (0; 25; 50; and 100 ppm) for 6 days in a specifically designed air ... [more ▼]

Effects of atmospheric ammonia (NH3) on the nasal mucosa and somatic growth were investigated in pigs exposed to 4 NH3 concentrations (0; 25; 50; and 100 ppm) for 6 days in a specifically designed air-pollutant exposure chamber. Nasal lavage (NAL) was applied to quantify the ammonia-induced inflammatory response by measuring the number of neutrophils and the albumin (porcine serum albumin) concentration in the NAL liquid. In control pigs, these variables remained unchanged throughout the exposure period. In all other groups, an important ammonia concentration-related increase was recorded. The equation of the linear regression line established between the mean values of the number of neutrophils (x 10(3)) per milliliter of NAL liquid (y) recorded at the end of the exposure period and the ammonia concentrations (ppm) was: y = 69.7 + 3.3 [NH3] (r = 0.979; P < 0.020). The increase in the neutrophil count was significant (P < 0.05) at concentrations as low as 25 ppm. For albumin concentration nanograms per milliliter, the corresponding equation was: y = 574 + 14.3 [NH3] (r = 0.953; P < 0.045). However, the first significant change (P < 0.05) in this variable was only obtained for the higher concentration (100 ppm). In exposed pigs, a concentration-related depression of somatic growth was observed. The equation of the regression line plotted relating the individual values of the changes in body weight gain recorded over the exposure period expressed as percentage of the initial body weight (y) and the ammonia concentration was: y = 3.507-0.203 [NH3] + 0.001 [NH3]2 (r = 0.55; P < 0.010).(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailCONTINUOUS ENZYMATIC-SYNTHESIS OF 2'-DEOXYTHYMIDINE-5'(ALPHA-D-GLUCOPYRANOSYL)DIPHOSPHATE
Zervosen, Astrid ULg; ELLING, Lothar; KULA, Maria-Regina

in Angewandte Chemie (International ed. in English) (1994), 33(5), 571-572

The preparation of primary nucleotide sugars like dTDP-glucose with sucrose synthase, a glycosyl transferase in plants, provides an alternative in enzymatic synthesis to the use of highly specific ... [more ▼]

The preparation of primary nucleotide sugars like dTDP-glucose with sucrose synthase, a glycosyl transferase in plants, provides an alternative in enzymatic synthesis to the use of highly specific pyrophosphorylases. In an enzyme membrane reactor a continuous synthesis can be performed on preparative scale. [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 detailActualités bibliographiques: les assurances dans la littérature criminologique
Lemaître, André ULg

in Déviance et Société (1994), 18(N°3), 297-329

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See detailEffects of Atmospheric Ammonia on Pulmonary Hemodynamics and Vascular Permeability in Pigs: Interaction with Endotoxins
Gustin, Pascal ULg; Urbain, B.; Prouvost, J. F. et al

in Toxicology and Applied Pharmacology (1994), 125(1), 17-26

The influence of atmospheric ammonia on the somatic growth, the plasma cortisol and ammonia concentrations, and cell blood counts was investigated in pigs exposed to four concentrations (0, 25, 50, and ... [more ▼]

The influence of atmospheric ammonia on the somatic growth, the plasma cortisol and ammonia concentrations, and cell blood counts was investigated in pigs exposed to four concentrations (0, 25, 50, and 100 ppm) for 6 days in a specifically designed air-pollutants exposure chamber. The effects of this gas on pulmonary vascular hemodynamics and permeability and on the endotoxin-induced vascular response were also assessed using an isolated perfused lung preparation. The total pulmonary blood flow resistance (Rt) was partitioned into four components: arterial (Ra), pre-(Ra′) and post-(Rv′) capillary and venous (Rv). The capillary filtration coefficient (Kf,c) was evaluated by using a gravimetric technique. None of the concentrations of ammonia significantly modified the plasma cortisol and ammonia concentrations or the differential leukocyte percentages and total white blood cell count, suggesting an absence of stress related to ammonia. In exposed animals, lethargy and a concentration-related depression of the somatic growth were observed. The equation of the regression line plotted relating the mean values of the changes in body weight gain recorded over the exposure period expressed as percentages of the initial body weight (y) and ammonia concentrations (x) was: y = 3.204 − 0.177x + 0.001x2(r = 0.99; p≤0.013). Endotoxin infused in the perfusion liquid of lungs from unexposed animals for 180 min induced a significant 208% increase in Rt (p < 0.001) which can be ascribed to a 338 and 180% increase in Ra′ and Rv′, respectively. Endotoxin infusion also induced a 62% (p ≤ 0.001) increase in the Kf,c. Exposure of pigs to ammonia at any concentration did not modify the baseline values of any hemodynamic or permeability parameters. However, the hemodynamic response to endotoxins in lungs from pigs exposed to 100 ppm was significantly altered. The increase in Rt, Ra′, and Rv′ observed in unexposed pigs was completely abolished as shown by the limited changes in Rt (+34.9%). An intermediate reaction (+131.7%) was obtained in pigs exposed to 50 ppm. This inhibiting effect of ammonia was closely correlated with gas concentration by a linear regression (r = 0.99; p ≤ 0.037). The changes in the Kf,c recorded in the control group were not modified by exposure to ammonia. It was concluded that exposure of pigs to aerial ammonia concentrations from 0 to 100 ppm for 6 days has no direct effect on the pulmonary microvascular hemodynamics and permeability and induces no stress response. A marked depressive effect on the somatic growth is observed at concentrations greater than 25 ppm. Concentrations greater than 50 ppm can modulate the pulmonary vascular response to endotoxins [less ▲]

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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 detailMultiple muscarinic receptor subtypes mediating pulmonary oedema in the rabbit.
Delaunois, Annie ULg; Gustin, Pascal ULg; Ansay, Michel ULg

in Pulmonary Pharmacology (1994), 7(3), 185-93

The effects of various muscarinic antagonists on acetylcholine (ACh)-induced pulmonary oedema were studied in isolated perfused rabbit lungs. ACh induced a dose-dependent increase in the capillary ... [more ▼]

The effects of various muscarinic antagonists on acetylcholine (ACh)-induced pulmonary oedema were studied in isolated perfused rabbit lungs. ACh induced a dose-dependent increase in the capillary filtration coefficient (Kf,c). This effect has been previously related to the activation of the capsaicin-sensitive nerve fibres and the release of substance P. Atropine, pirenzepine (M1-selective antagonist) and 4-DAMP (M3-selective antagonist) altered this response, producing a dose-dependent shift to the right of the ACh concentration-Kf,c response curve. By contrast, the M2-selective antagonist AFDX-116 shifted the ACh concentration-response curve to the left. Atropine, pirenzepine and 4-DAMP also significantly reduced the capsaicin-induced increase in the Kf,c, while AFDX-116 enhanced it. We conclude that multiple muscarinic receptor subtypes are present in the rabbit lung, located on the C-fibres, and are involved in the ACh-induced pulmonary oedema. M1 and M3 receptors seem to stimulate the release of neuropeptides from C-fibres, whereas M2 receptors have an inhibitory effect on these fibers. [less ▲]

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See detailFouilles 1994 à l'Abri du Pape et à la Grotte du Bois Laiterie (Province de Namur)
Otte, Marcel ULg; Straus, Lawrence; Lacroix, Philippe et al

in Notae praehistoricae (1994), 14

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See detailCinétique de récupération fonctionnelle de la ventilation pulmonaire après pontage aortocoronaire
Croisier, Jean-Louis ULg; Parisse, J.; Camus, G. et al

in Annales de Réadaptation et de Médecine Physique (1994), 37

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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 detailCell localization and redistribution of the 67 kD laminin receptor and alpha 6 beta 1 integrin subunits in response to laminin stimulation: an immunogold electron microscopy study.
Romanov, V.; Sobel, M. E.; pinto da Silva, P. et al

in Cell Adhesion and Communication (1994), 2(3), 201-9

The 67 kDa laminin receptor (67LR), one of several cell surface laminin-binding proteins, is involved in the interactions between cancer cells and laminin during tumor invasion and metastasis. A 37 kDa ... [more ▼]

The 67 kDa laminin receptor (67LR), one of several cell surface laminin-binding proteins, is involved in the interactions between cancer cells and laminin during tumor invasion and metastasis. A 37 kDa polypeptide (37LRP), previously identified as the 67LR precursor, is abundantly present in the cytoplasm and has been implicated in polysome formation. To better understand the cellular localization of the 67LR and its precursor, transmission electron microscopic studies of human melanoma A2058 cells were carried out using immunogold labeling and a variety of antibodies: (a) affinity purified antibodies directed against 37LRP cDNA-derived synthetic peptides; (b) anti-67LR monoclonal antibodies raised against intact human small cell lung carcinoma cells; and (c) monoclonal antibodies against the subunits of the integrin laminin receptor, alpha 6 beta 1. Double-labeling immunocyto-chemistry revealed that anti-67LR monoclonal antibodies as well as anti-37 LRP antibodies recognized antigens that were localized in the cytoplasm in electron dense structures. As expected, cell membrane labeling was also observed. Surprisingly, alpha 6 and beta 1 integrin subunits were detected in the same cytoplasmic structures positive for the 67LR and the 37LRP. After addition of soluble laminin to A2058 cells in suspension, the number of labeled cytoplasmic structures increased especially in the vicinity of the plasma membrane, and were exported onto the cell surface. Neither fibronectin nor BSA induced such an effect. The data demonstrate that the 67 LR and the 37 LRP antibodies detect colocalized antigens that are in cytoplasmic structures with alpha 6 beta 1 integrin.(ABSTRACT TRUNCATED AT 250 WORDS) [less ▲]

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See detailNew Energy Levels in Ne II deduced from FTS spectra in the Infrared Region (1800-9000 cm-1)
Quinet, Pascal ULg; Palmeri, P.; Biémont, Emile ULg

in Physica Scripta (1994), 49

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See detailMuscle Fibre Type and Size, and Muscle Capillary Density in Young Double-Muscled Blue Belgian Cattle
Stavaux, D.; Art, Tatiana ULg; Mc Entee, Kathleen ULg et al

in Zentralblatt für Veterinarmedizin. Reihe A (1994), 41(3), 229-236

Bovine muscle biopsies were analysed for fiber type and capillary density by the acid ATP-ase and amylase-PAS methods respectively. Samples obtained from Belgian blue double muscled (DM) calves were ... [more ▼]

Bovine muscle biopsies were analysed for fiber type and capillary density by the acid ATP-ase and amylase-PAS methods respectively. Samples obtained from Belgian blue double muscled (DM) calves were compared for their fibre type, size and vascularization with samples from Friesian (F) calves. The animals were sampled both at 2 and 7 months of age. Changes in histochemical composition occurring with ageing, independently of the breed, and differences related to the muscle sampled by comparing biopsies obtained from the longissimus dorsi (LD) and gluteobiceps (GB) muscles in animals of both breed were also investigated. Independently of age and muscle, fibre type I percentage and area were significantly higher in F than in DM muscles. Type IIa area was significantly larger in F than in DM, while fibre type IIb percentage and area were higher in DM. The number of capillaries/mm2 was significantly higher in F than in DM. Fibre type IIa and IIb percentage as well as the diameter of the three fibre types was significantly higher in the oldest animals. Finally, independently of age and breed, fibre type I and IIb percentages were significantly higher in LD but lower in GB. The results mainly demonstrated that Belgian blue DM muscles present a higher proportion of IIb fibres and a lower capillary supply than F muscles. [less ▲]

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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 detailThird Catalogue of stars measured in the Long-Term Photometry of Variables project.
Manfroid, Jean ULg; Sterken, C.; Cunow, B. et al

in European Southern Observatory Scientific Report (1994), 14

Not Available

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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 detailHooliganisme: approches descriptives et explicatives, avec une attention particulière aux faits observés en Belgique
Comeron, Manuel ULg

in Revue Internationale de Criminologie et de Police Technique (1994), 2

Etude du phénomène de violence dans les stades de football en Belgique avec une approche empirique des supporters et hooligans du Standard de Liège couplée avec une synthèse théorique des travaux anglo ... [more ▼]

Etude du phénomène de violence dans les stades de football en Belgique avec une approche empirique des supporters et hooligans du Standard de Liège couplée avec une synthèse théorique des travaux anglo-saxons. [less ▲]

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See detailLa prothèse pénienne dans le traitement de l'impuissance: La décision du patient
Kempeneers, Philippe ULg; Andrianne, R.; Mormont, Christian ULg

in Cahiers de Sexologie Clinique (1994), 20(124), 31-36

In the population who look advice from our interdisciplinary team, penile prosthesis is estimated been indicated in about 13% of the cases. Among these 13% of patients to whom a penile implant was ... [more ▼]

In the population who look advice from our interdisciplinary team, penile prosthesis is estimated been indicated in about 13% of the cases. Among these 13% of patients to whom a penile implant was proposed, only 32% agreed to undergo the operation. From this statement, we wondered why some men require penile implantation and other ones resign. A follow-up survey allowed to compare the experience of 19 implants recipients to the experience of 17 patients who have refused this solution. The cost of the device appears being a very determinant argument in the decision to reject penile implantation. Our study fails to distinguls clearly the two groups of subjects on the basis of another motivation criterion. [less ▲]

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See detailKibaran A-type granitoids and mafic rocks generated by two mantle sources in a late orogenic setting (Burundi)
Tack, Luc; Liégeois, Jean-Paul ULg; Deblond, André et al

in Precambrian Research (1994), 68

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See detailComparative performance study of postal services: a productive efficiency approach
Pestieau, Pierre ULg; Perelman, Sergio ULg

in Annales d'Economie et de Statistique (1994), (33), 187-202

This paper first discusses the notion of economic performance as applied to public enterprises and argues that productive efficiency is an attractive approach to performance measurement for such firms. It ... [more ▼]

This paper first discusses the notion of economic performance as applied to public enterprises and argues that productive efficiency is an attractive approach to performance measurement for such firms. It then presents an empirical efficiency study of postal services which is aimed at comparing productive performance indicators across countries and at testing the effect of competition and regulation on these indicators. [less ▲]

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See detailSerine-Type D-Ala-D-Ala Peptidases and Penicillin-Binding Proteins
Granier, Benoît; Jamin, Marc; Adam, Maggy et al

in Methods in Enzymology (1994), 244

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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 detailGender and diagnostic performance of the growth hormone response to clonidine for major depression : A large scale multicenter study
Schittecatte, Michel; Charles, Gerard; Machowski, R. et al

in American Journal of Psychiatry (The) (1994)

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See detailNeuropeptides cutanés
Tassoudji, Nazli ULg; Nikkels, Arjen ULg; Pierard, Gérald ULg

in Les Nouvelles Dermatologiques (1994), 13

The neuropeptides act as mediators in the transmission of nervous influx and as messengers between the nervous system and other cell populations. The skin contains numerous neuropeptides which are ... [more ▼]

The neuropeptides act as mediators in the transmission of nervous influx and as messengers between the nervous system and other cell populations. The skin contains numerous neuropeptides which are involved in the regulation of inflammation, immunomodulation, and thermoregulation. Cutaneous trophicity, pigmentation, and to a lesser extent sebaccous secretions are also influenced by neuropeptides. This review describes the functions of the most important neuropeptides encountered at the level of the skin. [less ▲]

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See detailAsthme et bêta2-agonistes de longue durée d'action
Bury, Thierry ULg; Kayambe, JM; Radermecker, Maurice ULg

in Médecine et Hygiène (1994), 52

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See detailENANTIOSELECTIVE SYNTHESIS OF NCA (S)-L-([ALPHA-C-11]METHYL)-TRYPTOPHAN
Plenevaux, Alain ULg; Lemaire, Christian ULg; Delfiore, Guy et al

in Applied Radiation & Isotopes (1994), 45(6), 651-653

N.c.a. (S)-L-([alpha-C-11]methyl)-tryptophan was prepared by treatment at -78-degrees-C of (2S,3aR,8aS)-1,2-bis(-methoxycarbonyl)-1,2,3,3a,8,8a-hexahydropyrrolo[2, 3-b]-indole with lithium ... [more ▼]

N.c.a. (S)-L-([alpha-C-11]methyl)-tryptophan was prepared by treatment at -78-degrees-C of (2S,3aR,8aS)-1,2-bis(-methoxycarbonyl)-1,2,3,3a,8,8a-hexahydropyrrolo[2, 3-b]-indole with lithium diisopropylamide and [C-11]CH3I. After hydrolysis with HI and HPLC purification, the title compound was isolated with a radiochemical yield of 36% (EOB corrected) within 22 min; e.e. was shown > 97% (n = 20); specific activity was ranging between 0.8 and 1.2 Ci (30-45 GBq)/mu mol EOB. [less ▲]

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See detailMéléagre dans les Argonautiques
Renaud, Jean-Michel ULg

in Uranie : Mythes et Littératures (1994), 4

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See detailMaigret dans ses rapports avec les classes privilégiées
Mouton, Charles ULg

in Revue Générale (1994), 5

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See detailAsthme et hyperréactivité bronchique non spécifique
Louis, Renaud ULg; Kayembe, J. M.; Radermecker, Maurice ULg

in Acta Clinica Belgica (1994), 49(3-4), 148-57

Bronchial hyperresponsiveness is a hallmark of asthma although it can also be present, to a lesser extent, in other diseases. The level of bronchial responsiveness depends on immuno-inflammatory processes ... [more ▼]

Bronchial hyperresponsiveness is a hallmark of asthma although it can also be present, to a lesser extent, in other diseases. The level of bronchial responsiveness depends on immuno-inflammatory processes modifying the functional status of airway smooth muscle as well as the structure of the bronchial wall. The responsiveness toward a direct constricting pharmacological agent is poorly correlated to the one toward an indirect constricting agent or a physical stimulus which cause airway obstruction through a more complex mechanism. Transversal studies show a relationship between the severity of asthma and the level of methacholine airway responsiveness. Long term treatment with corticoids can reduce the bronchial hyperresponsiveness of asthmatics. [less ▲]

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See detailStudies of marine epiphytic algae, Calvi, Corsica. III. Variations in the populations of epiphytic Bangiophyceae
Hoffmann, Lucien; Detienne, Xavier; Goffart, Anne ULg et al

in Cryptogamie Algologie (1994), 15(1), 53-63

Variations in the populations of Bangiophyceae (Rhodophyta) epiphytic on Cladophora prolifera and Stypocaulon scoparium were monitored qualitatively and quantitatively for two years (1981/82 and 1987/88 ... [more ▼]

Variations in the populations of Bangiophyceae (Rhodophyta) epiphytic on Cladophora prolifera and Stypocaulon scoparium were monitored qualitatively and quantitatively for two years (1981/82 and 1987/88) in nine stations with constrasting water quality in the area of Calvi (Corsica). The development of Chroodactylon ornatum was temperature dependent and showed its maximum density during the summer. The development of the other Bangiophyceae (Erythrocladia irregularis, Erythrotrichia camea, Goniotrichum alsidii, G. cornu-cewi) was correlated to the water quality in that their density increased towards the sewage discharge near to the town of Calvi. A general increase in epiphytism by Bangiophyceae between 1981 and 1988 seems to indicate an increased degree of eutrophication in the bay of Calvi. [less ▲]

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See detailExpected returns and volatility in european stock markets
Corhay, Albert ULg; Tourani-Rad, Alireza

in International Review of Economics and Finance (1994), 3(1), 45-56

The type of return generating process we test here on three European markets are GARCH and AR-GARCH in mean models with innovations that have either normal or student-t densities with time dependant ... [more ▼]

The type of return generating process we test here on three European markets are GARCH and AR-GARCH in mean models with innovations that have either normal or student-t densities with time dependant variances. These models are appealing in that they estimate time varying volatility in disturbances of stock returns series and ex-ante relationship between stock returns and volatility. Our results indicate that there is no statistically significant coefficient estimates for the volatility in the mean equation and that variance might not be appropriate as a measure of risk. Other proxies for risk should then be searched for. [less ▲]

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See detailOvarian endometrial cysts: the role of gonadotropin-releasing hormone agonist and/or drainage.
Donnez, Jacques; NISOLLE, Michelle ULg; Gillerot, Stéphane et al

in Fertility and Sterility (1994), 62(1), 63-6

Objective: To evaluate the role of GnRH agonist (GnRH-a) and/or drainage in the management of large endometriomas. DESIGN: This prospective clinical study was conducted in a parallel and randomized design ... [more ▼]

Objective: To evaluate the role of GnRH agonist (GnRH-a) and/or drainage in the management of large endometriomas. DESIGN: This prospective clinical study was conducted in a parallel and randomized design. SETTING: Department of Gynecology, Cliniques Universitaires St. Luc, Brussels, Belgium. PATIENTS: Eight infertile women with laparoscopically confirmed ovarian endometriotic cysts. After laparoscopic drainage of the ovarian cyst, patients were randomized. Patients in group I (n = 40) received no therapy. Patients in group II (n = 40) received GnRH-a therapy for 12 weeks. A second-look laparoscopy was performed after 12 weeks in each woman. RESULTS: After drainage, a quick recurrence of the endometrial cyst was observed in only group I. Indeed, the score and the cyst size were similar to the values observed before the first laparoscopy. In group II, a significant decrease in score and cyst diameter was observed. Ovarian biopsies revealed significant reduction in the stromal vascularization and a significant reduction in the mitotic activity in the group of women treated with GnRH-a. CONCLUSION: The quick recurrence of the ovarian cyst after drainage proved that drainage alone is ineffective. Drainage followed by GnRH-a was effective in the reduction of cyst size and the glandular mitotic activity. [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 detailcerebral blood flow velocities measurements on anterior cerebral artery during general anesthesia and minor surgery
Battisti, Oreste ULg

in Circulation et Métabolisme du Cerveau (1994), 11

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See detailRécidive post-opératoire de la maladie de Crohn après chirurgie curatrice
Belaiche, Jacques ULg; Louis, Edouard ULg

in Médecine et Hygiène (1994), 52

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See detailTraitement de données par le logiciel Minitab
Claustriaux, Jean-Jacques ULg; Delvaux, A.

in Notes de Statistique et d'Informatique (1994), 1

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See detailCharacterization and Tumorigenicity of Spheroids Composed of Pigmented or Non Pigmented B16 Melanoma Cells
Coucke, P. H.; Gillet, Marie-Claire ULg; Bonjean, K. A. et al

in In Vivo (Athens, Greece) (1994), 8(3, May-Jun), 333-8

A parental line of mouse B16 melanoma cells (B16) and two derived cloned lines, either pigmented (B16P) or non pigmented (B16NP), were cultured in vitro as spheroids. After 48 hrs, the pigmented cells ... [more ▼]

A parental line of mouse B16 melanoma cells (B16) and two derived cloned lines, either pigmented (B16P) or non pigmented (B16NP), were cultured in vitro as spheroids. After 48 hrs, the pigmented cells (B16, B16P) formed smaller and looser aggregates, with higher rates of cell proliferation and lower amounts of extracellular matrix as compared to B16NP spheroids. The three lines were more tumorigenic when inoculated subcutaneously as spheroids than as isolated cells. Furthermore, B16P or B16 spheroids developed richly vascularized subcutaneous tumors and metastases more rapidly than B16NP aggregates. After intravenous injection of spheroids, the measurement with an image analyzer of the area of sections in lung colonies indicated that B16P colonies were larger and more numerous than those induced by B16NP cells. [less ▲]

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See detailStimulation of glutatione-peroxidase activity decreases HIV type-1 activation after oxidative stress
Sappey, C.; Legrand, Sylvie ULg; Best-Belopmme, M. et al

in AIDS Research and Human Retroviruses (1994), 10(11), 1451-1461

Am important aspect of human immunodeficiency virus (HIV-1) infection is the regulation of its expression by nuclear factor kappa B (NF-kappa B) by redox-controlled signal transduction pathways. In this ... [more ▼]

Am important aspect of human immunodeficiency virus (HIV-1) infection is the regulation of its expression by nuclear factor kappa B (NF-kappa B) by redox-controlled signal transduction pathways. In this study, we demonstrate that selenium supplementation can effectively increase glutathione peroxidase (GPx) activity in latently infected T lymphocytes. The Se-supplemented cells exhibited an important protection against the cytotoxic and reactivating effects of hydrogen peroxide (H2O2). Concomitantly, NF-kappa B activation by H2O2 was also decreased in Se-supplemented cells. Selenium stimulation of GPx activity also induces a protective effect against cell activation by tumor necrosis factor alpha (TNF-alpha) but less significantly by phorbol esters such as PMA. These Se-mediated effects were specific because they were not found when AP-1 DNA-binding activity was studied after H2O2-induced stress. Hyperthermia was also studied because it could promote intracellular electron leakage in electron transport chains. Elevating the temperature to 42 degrees C did not induce NF-kappa B directly. Rather, it sensitized infected cells to subsequent oxidative stress by H2O2, demonstrating the importance of hyperthermia, often associated with opportunistic infections in the development of immunodeficiency. In this case, Se induced partial protection against the sensitizing effect of hyperthermia. [less ▲]

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See detailIGF-I and IGFBP-3 increase independently of testosterone release during the onset of puberty in cattle
Renaville, Robert ULg; Sneyers, Myriam; Massart, Serge et al

in Growth Regulation (1994), 4(suppl 1), 116

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See detailReasoning about Infinite Computations
Vardi, Moshe Y.; Wolper, Pierre ULg

in Information & Computation (1994), 115(1), 1-37

We investigate extensions of temporal logic by connectives defined by finite automata on infinite words. We consider three different logics, corresponding to three different types of acceptance conditions ... [more ▼]

We investigate extensions of temporal logic by connectives defined by finite automata on infinite words. We consider three different logics, corresponding to three different types of acceptance conditions (finite, looping, and repeating) for the automata. It turns out, however that these logics all have the same expressive power and that their decision problems are all PSPACE-complete. We also investigate connectives defined by alternating automata and show that they do not increase the expressive power of the logic or the complexity of the decision problem. (C) 1994 Academic Press, Inc. [less ▲]

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See detailMutation analysis of coding sequences for type I procollagen in individuals with low bone density.
Spotila, L. D.; Colige, Alain ULg; Sereda, L. et al

in Journal of Bone and Mineral Research (1994), 9(6), 923-32

Mutations in one of the two genes encoding type I procollagen (COL1A1 and COL1A2) are frequently the cause of osteogenesis imperfecta (OI), a disorder characterized by brittle bones. Here we tested ... [more ▼]

Mutations in one of the two genes encoding type I procollagen (COL1A1 and COL1A2) are frequently the cause of osteogenesis imperfecta (OI), a disorder characterized by brittle bones. Here we tested whether patients with low bone density also have mutations in these genes. The 26 patients studied had no apparent metabolic bone disease, but most had a positive family history of osteopenia or osteoporosis. Although a diagnosis of OI was considered by the clinician in some cases, the clinical criteria for OI were not satisfied. Our strategy for mutation analysis consisted of PCR amplification of cDNA made to fibroblast mRNA using primers specific for the coding regions of COL1A1 and COL1A2. The PCR products were then sequenced directly with primers located within each PCR product. We found that 3 of 26 patients had mutations that altered the encoded amino acid. One mutation, at position alpha 2(I)-661 has been reported (Spotila et al. 1991 Proc Natl Acad Sci USA PNAS 88:5423). The other 2 patients, who were not related to each other, had a mutation that altered the proline codon at alpha 1(I)-27 to alanine. This mutation was not found in 81 normal individuals or in 37 additional osteopenic individuals. However, its effect on the biologic function of type I collagen, as well as its role in osteopenia, is uncertain. In addition to the two mutations, we found a polymorphism in codon alpha 2(I)-459. Although this polymorphism involved an amino acid substitution, it was present with equal frequency in the patient and the normal population. By analyzing this and previously reported neutral sequence variants in the COL1A2 gene, we determined that all patients expressed both alleles of the COL1A2 gene. The 12 patients who were heterozygous for a COL1A1 neutral sequence variant also expressed both alleles. Here we present all PCR primer and sequencing primer information. The results suggest that surveying a larger group of similarly selected individuals may reveal additional mutations in the COL1A1 or COL1A2 genes. [less ▲]

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See detailGeometric control of a pyridoxal-catalyzed aldol condensation
Koh, John T.; Delaude, Lionel ULg; Breslow, Ronald

in Journal of the American Chemical Society (1994), 116(25), 11234-11240

A chiral cyclophane derivative of pyridoxal has been synthesized that has amino groups oriented specifically over one face of the cofactor. The compound catalyzes the formation of threonine and allo ... [more ▼]

A chiral cyclophane derivative of pyridoxal has been synthesized that has amino groups oriented specifically over one face of the cofactor. The compound catalyzes the formation of threonine and allo-threonine from glycine and acetaldehyde with enantioinductions that are a function of pH, reversing the optical selectivity between low pH and high pH. The stereochemical results are compared with those of structurally related pyridoxal cyclophanes that lack titratable catalytic groups. Explanations are advanced for this stereochemical reversal and for the otherwise surprising preference of most of these compounds to react on the more hindered face of the pyridoxal. Models indicate that the transamination intermediate is distorted by the transannular chain, and stereoelectronic arguments predict that this distortion should lead to reaction on the face that carries the chain, as observed. The stereochemical reversal with the attached (dimethylamino)alkyl group, as a function of pH, may reflect catalysis by the protonated form, but metal coordination by the basic form cannot be excluded. [less ▲]

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See detailDimensionless critical shear stress evaluation from flume experiments using different gravel beds
Petit, François ULg

in Earth Surface Processes & Landforms (1994)

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See detailSecteur public contre secteur privé : l'Etat de l'opinion en Wallonie
Jacquemain, Marc ULg; Doutrelepont, René; Vandekeere, Michel

in Recherches Sociologiques et Anthropologiques (1994), 25-1

Through survey results, the paper shows what fields of activity should be managed either by the public sector or by the private sector according to the opinion of the Walloons. It also shows how the ... [more ▼]

Through survey results, the paper shows what fields of activity should be managed either by the public sector or by the private sector according to the opinion of the Walloons. It also shows how the balance changes according to certain characteristics of the population [less ▲]

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See detailSynthesis by sol-gel process and characterization of barium-titanate
LECLOUX, A. J.; KOCKLENBERG, Régine; MICHAUX, Bernard et al

in Annales de Chimie Science des Materiaux (1994), 19(2), 67-78

Barium titanate gels are prepared by sol-gel process from titanium isopropoxide and barium hydroxide in presence of methoxyethanol, methanol and water. These gels are dried under vacuum. The influence of ... [more ▼]

Barium titanate gels are prepared by sol-gel process from titanium isopropoxide and barium hydroxide in presence of methoxyethanol, methanol and water. These gels are dried under vacuum. The influence of the hydrolysis ratio, the temperature and the vacuum level during drying is discussed. [less ▲]

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See detailSocio-prévention du hooliganisme et extrémisme dans le football
Comeron, Manuel ULg

in Réseaux : Revue Interdisciplinaire de Philosophie Morale et Politique (1994), 70

Etude de la problématique du racisme dans les stades de football et analyse de l'extrémisme politique des supporters

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See detailFunctional effects of a muscarinic receptor blockade during acute respiratory distress syndrome in double-muscled calves
Genicot, Bruno; Mouligneau, Frédéric; Close, Roland et al

in Veterinary Record : Journal of the British Veterinary Association (1994), 134(5), 110-113

Eighteen Belgian white and blue double-muscled calves suffering from the acute respiratory distress syndrome were studied. Fifteen of the calves inhaled ipratropium bromide (0.6 mg) four times a day for ... [more ▼]

Eighteen Belgian white and blue double-muscled calves suffering from the acute respiratory distress syndrome were studied. Fifteen of the calves inhaled ipratropium bromide (0.6 mg) four times a day for three to four days whereas the other three control calves inhaled sterile 0.9 per cent saline. All the animals were injected with ceftiofur sodium (1 mg/kg/day) for five days, the first injection being given one hour after the first inhalation of ipratropium bromide or saline. Arterial oxygen tension, alveolar arterial oxygen difference, carbon dioxide tension and arterial pH, respiratory and heart rates, oscillatory resistance and phase angle, measured by the mono-frequency forced oscillation technique, were recorded both before and one hour and 168 hours after the first inhalation. The measurement of oscillatory resistance and phase angle made it possible to resolve the impedance of the respiratory system into its real and imaginary components. The oscillatory compliance (Cosc) was determined from the imaginary component (Im). By one hour after the first inhalation of ipratropium bromide the oscillatory resistance was already significantly reduced and Im and Cosc had significantly increased, but the other parameters showed no significant improvement. However, between one hour and 168 hours after the first inhalation all the parameters reached physiological values. The control calves did not show any change. It was concluded that the pulmonary dysfunction associated with the acute respiratory distress syndrome in these calves was at least partly due to a severe bronchoconstriction. [less ▲]

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See detailRobotique pédagogique, d'un colloque à l'autre : vers l'émergence d'une communauté scientifique ?
Denis, Brigitte ULg; Baron, G. L.

in Sciences et Techniques Educatives (1994), 1

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See detailGenetic diversity among some wild populations of lima bean (Phaseolus lunatus L.) proceeding from Central Valley of Costa Rica
Maquet, Alain; Wathelet, Bernard ULg; Dubois, Sophie et al

in Annual Report of the Bean Improvment Cooperative (1994)

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See detailBiostatistical studies of Western European allogamous populations of the Epipactis helleborine (L.) Crantz species group (Orchidaceae)
Tyteca, D.; Dufrêne, Marc ULg

in Systematic Botany (1994), 19(3), 424-442

[No abstract available]

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See detailThe Moorcock / Hawkwind Connection: Science Fiction and Rock & Roll Culture
Delville, Michel ULg

in Foundation: The Review of Science Fiction (1994)

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See detailAcute biochemical variations induced by four different calcium salts in healthy male volunteers
Reginster, Jean-Yves ULg; Denis, D; Bartsch, V et al

in Equilibre (1994), 19

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See detailCationic and secretory effects of BPDZ 44 and diazoxide in rat pancreatic islets
Antoine, M.-H.; Pirotte, Bernard ULg; Hermann, M. et al

in Experientia (1994), 50

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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 Les Nouvelles de Rhumatologie (1994), 4

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See detailRecherches paléolithiques et mésolithiques en Belgique, 1993: le Trou Magrite, Huccorgne et l'Abri du Pape
Noiret, Pierre ULg; Otte, Marcel ULg; Straus, Lawrence et al

in Notae Praehistoricae (1994), 13

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See detailAspergillose chez les oiseaux marins échoués sur la côte belge
Jauniaux, Thierry ULg; Coignoul, Freddy ULg

in Annales de Médecine Vétérinaire (1994), 138(4), 277-281

Pulmonary aspergillosis is a respiratory disease usually present in birds. The agent is an ubiquitous and saprophitic fungus, belonging to the Aspergillus genus, A. fumigatus being the predominant species ... [more ▼]

Pulmonary aspergillosis is a respiratory disease usually present in birds. The agent is an ubiquitous and saprophitic fungus, belonging to the Aspergillus genus, A. fumigatus being the predominant species. Debilitation and stress are favourable for the mycosis installation in captive wild birds (Zoo and rehabilitation centers). During 90-91 and 91-92 winters, 386 birds found dead at the belgian seashore were necropsied and 9 birds were carriers of specific lesions. Complementary investigations were undertaken. Most animals were oiled and had been kept for some time in rehabilitation centers. [less ▲]

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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 detailMechanical Flow Obstruction after Heart Transplantation Diagnosed by Tee
CANIVET, Jean-Luc ULg; DEFRAIGNE, Jean ULg; Demoulin, Jean-Claude et al

in Annals of Thoracic Surgery (1994), 58(3), 890-1

We report a case of mechanical flow obstruction after heart transplantation caused by a prominent left atrium suture with a "pursestring" effect. The diagnosis was achieved by transesophageal ... [more ▼]

We report a case of mechanical flow obstruction after heart transplantation caused by a prominent left atrium suture with a "pursestring" effect. The diagnosis was achieved by transesophageal echocardiography. The mean transstenotic gradient was measured at 13 mm Hg. Because of the profound hemodynamic and multisystemic failure, no surgical correction was attempted. The postmortem examination confirmed the stenosis at the level of the left atrium. [less ▲]

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