References of "1998"
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See detailOptimization of Ship Structure – Minimum Cost
Rigo, Philippe ULg

in Second International Shipbuilding Conference, ISC’98, Krylov Shipbuilding Research Inst. (1998, November)

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See detailCapillary and Gravity-driven Instabilities in Finite Circular Containers
Dauby, Pierre ULg; Narayanan, Ranga; Johnson, D. et al

in Bulletin of the American Physical Society, Vol. 43, n°9 (1998, November)

When a horizontal fluid layer is heated from below, convection sets in provided the vertical temperature gradient exceeds a critical value. The motion is due to a combined effect of gravity and ... [more ▼]

When a horizontal fluid layer is heated from below, convection sets in provided the vertical temperature gradient exceeds a critical value. The motion is due to a combined effect of gravity and capillarity when the upper surface of the fluid is free. Convection usually takes the form of a regular pattern of convective cells, which are often hexagonal or roll-like in horizontally infinite layers. In confined geometries, the appearance of the instability phenomenon is greatly influenced by the presence of lateral walls which inhibit convection due to friction and which also determine the shape of the convective cells. In this work we present a theoretical and experimental analysis of the thermo-convective instability of a fluid layer contained in a circular container. The motion and the temperature perturbations in the air layer above the fluid are also taken into account. The convective threshold is determined as a function of the aspect ratio of the vessel and the convective stationary and oscillatory structures appearing in the non linear regime are also studied. Experimental results are presented and compared with the theoretical approach. [less ▲]

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See detailCultured Oligodendrocyte Progenitors Derived from Cerebral Cortex Express a Glycine Receptor Which Is Pharmacologically Distinct from the Neuronal Isoform
Belachew, Shibeshih ULg; Rogister, Bernard ULg; Rigo, Jean-Michel et al

in European Journal of Neuroscience (1998), 10(11), 3556-64

Using the whole-cell patch-clamp technique, we demonstrate glycine-induced currents in oligosphere-derived oligodendrocyte progenitors cultured from newborn rats. Similar inward currents are also ... [more ▼]

Using the whole-cell patch-clamp technique, we demonstrate glycine-induced currents in oligosphere-derived oligodendrocyte progenitors cultured from newborn rats. Similar inward currents are also triggered by beta-alanine and taurine, two established glycine receptor agonists. In our recording conditions, glycine-gated currents in oligodendrocyte progenitors reverse about 0 mV and are reversibly inhibited by the glycine competitive antagonist strychnine, the Cl- channel blocker picrotoxinin and the non-competitive antagonist cyanotriphenylborate. The oligodendrocyte progenitors glycine receptor (GlyR) differs from the corresponding neuronal receptor: [3H]strychnine binding data and the strychnine inhibition curve of glycine-induced currents in oligodendrocyte progenitor cultures suggest the existence of two strychnine binding sites on the oligodendroglial GlyR. Using total RNA isolated from oligodendrocyte progenitors cultures, reverse transcription-polymerase chain reaction analysis of glycine receptor subunit expression shows the presence of alpha2 and beta subunits and immunocytochemical stainings confirm that this GlyR contains an alpha subunit which is not alpha1. The molecular structure of the oligodendroglial GlyR could be either homopentameric alpha2 or heteromeric alpha2beta but in both cases, the sequence of the alpha2 or beta subunits have to be different from the known neuronal sequences in order to explain, respectively, the cyanotriphenylborate (alpha2) and picrotoxinin (beta) sensitivities. This work thus demonstrates that GlyR are expressed by oligodendrocytes obtained not only from spinal cord but also from supraspinal structures. The pharmacological properties and presumably the molecular structure of oligodendroglial GlyR are original. The physiological meaning of the presence of such receptors on developing and mature oligodendrocytes remains unknown. [less ▲]

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See detailElectrografting of acrylic and methacrylic monomers onto metals: influence of the relative polarity and donor-acceptor properties of the monomer and the solvent
Baute, Noëlle; Teyssié, Philippe; Martinot, Lucien et al

in European Journal of Inorganic Chemistry (1998), 1998(11), 1711-1720

The possibility of grafting a series of alkyl polyacrylates and polymethacrylates onto a nickel cathode by electropoly-merization of the parent monomers has been investigated and has emphasized the ... [more ▼]

The possibility of grafting a series of alkyl polyacrylates and polymethacrylates onto a nickel cathode by electropoly-merization of the parent monomers has been investigated and has emphasized the critical importance of the solvent used. Indeed, the intensity of the inhibition peak, which is the electrochemical mark of the cathode passivation as result of the polymer grafting, clearly depends on both the polarity and the donor-acceptor properties of the solvent. The Gutmann concept is used to account for these experimental results. An increase in the donicity of the solvent used for the electrochemical medium has allowed, for the very first time, several polyacrylates and polymethacrylates [such as poly(ethyl acrylate), poly(methyl methacrylate), and poly(2-trimethylsilyloxyethyl methacrylate)] to be electrografted onto Ni. This observation is consistent with a competition process between the monomer and the solvent for being adsorbed on the cathode and amassing in its very close vicinity. The outcome of this competition is controlled by the relative polarity (in case of low donicity) and the relative donor-acceptor properties (when the difference is high enough) of the monomer/solvent pair, and by the monomer concentration (in case of weak competition). A semiquantitative relationship has also been observed between the monomer ability to be electrografted and the electron-accepting character of the vinyl β-carbon atom as measured by 13C NMR. [less ▲]

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See detailTransplantation d'un rein prélevé laparoscopiquement chez un donneur vivant apparente
Detry, Olivier ULg; Defechereux, Thierry ULg; Hamoir, Etienne ULg et al

in Revue Médicale de Liège (1998), 53(11), 657-9

Transplantation of kidney grafts harvested in living donors has demonstrated better results than grafts harvested from brain dead donors. Recently, laparoscopic live donor nephrectomy has been introduced ... [more ▼]

Transplantation of kidney grafts harvested in living donors has demonstrated better results than grafts harvested from brain dead donors. Recently, laparoscopic live donor nephrectomy has been introduced to reduce the live procurement morbidity. [less ▲]

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See detailVaricella-zoster virus IE63, a virion component expressed during latency and acute infection, elicits humoral and cellular immunity
Sadzot-Delvaux, Catherine ULg; Arvin, Ann M.; Rentier, Bernard ULg

in Journal of Infectious Diseases (1998), 178(Suppl. 1), 43-47

Varicella-zoster virus (VZV) latency in human dorsal root ganglia is characterized by the transcription of large regions of its genome and by the expression of large amounts of some polypeptides, which ... [more ▼]

Varicella-zoster virus (VZV) latency in human dorsal root ganglia is characterized by the transcription of large regions of its genome and by the expression of large amounts of some polypeptides, which are also expressed during lytic cycles. The immediate early 63 protein (IE63) is a virion component expressed very early in cutaneous lesions and the first viral protein detected during latency. Immune response against IE63 has been evaluated among naturally immune adults with a history of chickenpox: Specific antibodies were detected in serum, and most subjects who had a T cell proliferation with unfractionated VZV antigens had T cell recognition of purified IE63. The cytotoxic T cell (CTL) response to IE63 was equivalent to CTL recognition of IE62, the major tegument component of VZV, whose immunogenicity has been previously described. T cell recognition of IE63 and other VZV proteins is one of the likely mechanisms involved in controlling VZV reactivation from latency. [less ▲]

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See detailSer dos
Irigaray, Luce; Willson, Patricia ULg

Book published by Ediciones Paidós (1998)

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See detailAmine polymers : relation : chemical structure
Grandfils, Christian ULg; Peulen, Olivier ULg; Deloyer, P et al

Conference (1998, November)

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See detailMieux connaître sa voix
Morsomme, Dominique ULg

Conference given outside the academic context (1998)

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See detailJuvenile Rheumatoid Arthritis and Del(22q11) Syndrome: A Non-Random Association
Verloes, Alain ULg; Curry, C.; Jamar, Michelle ULg et al

in Journal of Medical Genetics (1998), 35(11), 943-7

Del(22q11) is a common microdeletion syndrome with an extremely variable phenotype. Besides classical manifestations, such as velocardiofacial (Shprintzen) or DiGeorge syndromes, del(22q11) syndrome may ... [more ▼]

Del(22q11) is a common microdeletion syndrome with an extremely variable phenotype. Besides classical manifestations, such as velocardiofacial (Shprintzen) or DiGeorge syndromes, del(22q11) syndrome may be associated with unusual but probably causally related anomalies that expand its phenotype and complicate its recognition. We report here three children with the deletion and a chronic, erosive polyarthritis resembling idiopathic cases of juvenile rheumatoid arthritis (JRA). Patient 1, born in 1983, initially presented with developmental delay, facial dysmorphism, velopharyngeal insufficiency, and severe gastro-oesophageal reflux requiring G tube feeding. From the age of 3 years, he developed JRA, which resulted in severe restrictive joint disease, osteopenia, and platyspondyly. Patient 2, born in 1976, had tetralogy of Fallot and peripheral pulmonary artery stenosis. She developed slowly, had mild dysmorphic facial features, an abnormal voice, and borderline intelligence. JRA was diagnosed at the age of 5 years. The disorder followed a subacute course, with relatively mild inflammatory phenomena, but an extremely severe skeletal involvement with major osteopenia, restrictive joint disease (bilateral hip replacement), and almost complete osteolysis of the carpal and tarsal bones with phalangeal synostoses, leading to major motor impairment and confinement to a wheelchair. Patient 3, born in 1990, has VSD, right embryo-toxon, bifid uvula, and facial dysmorphism. She developed JRA at the age of 1 year. She is not mentally retarded but has major speech delay secondary to congenital deafness inherited from her mother. In the three patients, a del(22q11) was shown by FISH analysis. These observations, and five other recently published cases, indicate that a JRA-like syndrome is a component of the del(22q11) spectrum. The deletion may be overlooked in those children with severe, chronic inflammatory disorder. [less ▲]

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See detailAre there arguments allowing to propose that polyamines are preventive agents of food allergy
Dandrifosse, Guy ULg; Peulen, Olivier ULg; El Khefif, N et al

Conference (1998, November)

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See detailMorphometric Study of the Equine Navicular Bone: Variations with Breeds and Types of Horse and Influence of Exercise
Gabriel, Annick ULg; Jolly, Sandra ULg; Detilleux, Johann ULg et al

in Journal of Anatomy (1998), 193((Pt 4)), 535-49

Navicular bones from the 4 limbs of 95 horses, classified in 9 categories, were studied. The anatomical bases were established for the morphometry of the navicular bone and its variations according to the ... [more ▼]

Navicular bones from the 4 limbs of 95 horses, classified in 9 categories, were studied. The anatomical bases were established for the morphometry of the navicular bone and its variations according to the category of horse, after corrections were made for front or rear limb, sex, weight, size and age. In ponies, navicular bone measurements were smallest for light ponies and regularly increased with body size, but in horses, navicular bone dimensions were smallest for the athletic halfbred, intermediate for draft horse, thoroughbreds and sedentary halfbreds and largest for heavy halfbreds. The athletic halfbred thus showed reduced bone dimensions when compared with other horse types. Navicular bones from 61 horses were studied histomorphometrically. Light horses and ponies possessed larger amounts of cancellous bone and less cortical bone. Draft horses and heavy ponies showed marked thickening of cortical bone with minimum intracortical porosity, and a decrease in marrow spaces associated with more trabecular bone. Two distinct zones were observed for the flexor surface cortex: an external zone composed mainly of poorly remodelled lamellar bone, disposed in a distoproximal oblique direction, and an internal zone composed mainly of secondary bone, with a lateromedial direction for haversian canals. Flexor cortex external zone tended to be smaller for heavy ponies than for the light ponies. It was the opposite for horses, with the largest amount of external zone registered for draft horses. In athletic horses, we observed an increase in the amount of cortical bone at the expense of cancellous bone which could be the result of reduced resorption and increased formation at the corticoendosteal junction. Cancellous bone was reduced for the athletic horses but the number of trabeculae and their specific surfaces were larger. Increased bone formation and reduced resorption could also account for these differences. [less ▲]

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See detail“Sainte” : le double procès du texte
Durand, Pascal ULg

in Op. Cit. : Revue de Littératures Française et Comparée (1998), 11

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See detailAlkoxyamine-mediated Controlled Radical Polymerization in Emulsion
Smulders, Wilfred; Göttgens, Christianne; Olive, Gilles ULg et al

Poster (1998, November)

Alkoxyamine-mediated Controlled Radical Polymerization in Emulsion is presented here.

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See detailDéveloppement de techniques d'identification d'odeurs dans l'environnement
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Wiertz, Véronique et al

Report (1998)

Different techniques of evaluation of environmental odours were analysed and tested. More particularly, gas chromatography/mass spectrometry and electronic nose were investigated on 5 environmental ... [more ▼]

Different techniques of evaluation of environmental odours were analysed and tested. More particularly, gas chromatography/mass spectrometry and electronic nose were investigated on 5 environmental sources : printing house, compost area, waste water treatment plant, coach building and slaughter house. It is shown that electronic nose is a promising instrument able to identify qualitatively the odour type and to provide a global indicator of the odour level. [less ▲]

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See detailEfficiency and productivity of the health sector in the OECD countries (1970-1994)
Fecher-Bourgeois, Fabienne ULg

Scientific conference (1998, November)

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See detailVers une formation initiale en didactique des langues germaniques axée sur l'articulation de la théorie et de la pratique didactiques
Simons, Germain ULg

in Hiligsmann, Philippe (Ed.) ANBF-Nieuwsbrief (1998, November)

Selon G. Simons, le simple organigramme d'un cours de didactique spéciale véhicule une certaine représentation de ce que sont ou devraient être l'enseignement et l'apprentissage. Cette conception est ... [more ▼]

Selon G. Simons, le simple organigramme d'un cours de didactique spéciale véhicule une certaine représentation de ce que sont ou devraient être l'enseignement et l'apprentissage. Cette conception est progressivement intériorisée par les étudiants, dans le cas présent, de futurs enseignants en langues germaniques, et constitue un curriculum latent qui risque d'influencer (in)directement leur manière d'enseigner. Dans cette communication, G. Simons décrit et commente brièvement un ensemble de micro-réformes introduites dans la macro-structure méthodologique de la formation initiale en Didactique des Langues germaniques à l'Université de Liège de 1990 à 1998. Toutes ces micro-réformes poursuivent un seul et même objectif final : favoriser l'articulation de la théorie et de la pratique didactiques ou former des praticiens réfléchis. [less ▲]

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See detailPowerful alternative asymmetric Catalytic dihydroxylation of olefins
Colaux, Catherine ULg; Krief, Alain; Dumont, Willy

Poster (1998, November)

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See detailtournois internationaux, SUPPORTERS, HOOLIGANS ET MESURES DE PREVENTION DANS LES STADES EN EUROPE
Comeron, Manuel ULg; Kellens, Georges ULg; Demeulenaer, Stijn

Report (1998)

Analyse de la nature, de la dynamique et du mode de fonctionnement des supporters européens, dont les noyaux durs, attachés à des équipes nationales (avec une attention particulière aux pays de l’Est ... [more ▼]

Analyse de la nature, de la dynamique et du mode de fonctionnement des supporters européens, dont les noyaux durs, attachés à des équipes nationales (avec une attention particulière aux pays de l’Est). Constitution d’une « typologie» sur les caractéristiques, comportements et habitudes des supporters internationaux. Analyse et évaluation de l’impact des stratégies de contrôle des supporters et des mesures de sécurité policières (maintien de l’ordre public), préventives (stewarding, fanprojects, animations) et organisationnelles (infrastructures, billetterie, vente d’alcool) mises en place dans les stades de football européens, notamment à l’occasion des tournois internationaux (Championnats d’Europe des Nations et Coupes du Monde). Propositions afin de transposer et adapter des stratégies d’intervention expérimentées avec des effets positifs à l’étranger pour l’organisation sécuritaire de l’Euro 2.000 [less ▲]

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