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See detailLe cas clinique du mois. Sarcome primitif de l'artere pulmonaire.
Pestieau, S.; Detry, Olivier ULg; Canivet, Jean-Luc ULg et al

in Revue Médicale de Liège (1996), 51(11), 681-3

Nous rapportons un cas rare de sarcome de l'artère pulmonaire, diagnostiqué chez un patient souffrant de décompensation cardiaque. L'échographie cardiaque transoesophagienne et la tomodensitométrie ... [more ▼]

Nous rapportons un cas rare de sarcome de l'artère pulmonaire, diagnostiqué chez un patient souffrant de décompensation cardiaque. L'échographie cardiaque transoesophagienne et la tomodensitométrie thoracique ont permis un diagnostic précis de masse dans l'artère pulmonaire. Le traitement instauré fut une résection chirurgicale, aidée par une circulation extra corporelle et un arrêt cardiaque en hypothermie, et l'analyse anatomopathologique de la pièce réséquée a décris la présence d'un sarcome peu différencié de l'artère pulmonaire. Quoiqu'un traitement postopératoire complémentaire par chimiothérapie a été entrepris, le pronostic vital du patient reste sombre à moyen terme au vu des données de la littérature. [less ▲]

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See detailCombined enzymatic synthesis of nucleotide (deoxy) sugars from sucrose and nucleoside monophosphates
Zervosen, Astrid ULg; Stein, Andreas; Adrian, Holger et al

in Tetrahedron (1996), 52(7), 2395-2404

Abstract: The synthesis of NDP-glucose 3a-d (N= A, C, U, dU) with sucrose synthase B was combined with the enzymatic synthesis of nucleoside diphosphates 2a-d from their corresponding nucleoside ... [more ▼]

Abstract: The synthesis of NDP-glucose 3a-d (N= A, C, U, dU) with sucrose synthase B was combined with the enzymatic synthesis of nucleoside diphosphates 2a-d from their corresponding nucleoside monophosphates la-d by different kinases A. Further combination with recombinant dTDP-glucose 4,6-dehydratase D enabled us to synthesize dUDP-6-deoxy-alpha-D-xylo-4-hexulose 5 from ld on a preparative scale. By using the repetitive batch technique the enzymatic syntheses of nucleotide (deoxy) sugars 3a-d, 5 could be realized on a 0.1 - 0.5 g scale. [less ▲]

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See detailThe Appearance of CH3+ Ions from Methyl Halides by resonant photoionization. A translational energy surprisal analysis. Part I. CH3F.
Momigny, J.; Locht, Robert ULg

in Chemical Physics (1996), 206

A surprisal analysis has been applied to the translational energy distribution (TED) of CH3++F from CH3F giving rise to a new and deeper insight into the dissociation dynamics involved in the process. For ... [more ▼]

A surprisal analysis has been applied to the translational energy distribution (TED) of CH3++F from CH3F giving rise to a new and deeper insight into the dissociation dynamics involved in the process. For both the 16.5 eV and 21.22 eV photon energies used, the direct population at different energy levels of the B2E state of CH3F+ which is radiationlessly coupled to the repulsive CH3F+(A2A1) state, gives rise to wide and negatively surprised total TEDs. At both energies they have to be ascribed to severe limitations in the vibrational excitation of CH3+. Additionally, in the case of 21.22 eV photons, a non-statistical expression has to be used to account for the density of translational states. At both photon energies, the population of the CH3F+ electronic states through autoionization of Rydberg states accounts for (i) the concurrent appearance of TEDs governed by a pure RRKM behavour and (ii) the positively surprised TEDs where the angular momentum conservation plays an important role. At 16.85 eV photon energy the distributions are assigned to CH3F+ (X2E)->CH3+ (X1A'1)+F. At 21.22 eV photon energy, doubly excited electronic states of CH3F+ are assumed to take part and they are correlated with CH3+ (3A")+F channel. [less ▲]

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See detailDNA bending by the silencer protein NeP1 is modulated by TR and RXR.
Arnold, R.; Burcin, M.; Kaiser, Bruno ULg et al

in Nucleic Acids Research (1996), 24(14), 2640-7

NeP1 binds to the F1 silencer element of the chicken lysozyme gene and, in the presence of TR, v-ERBA or RAR, synergistically represses transcriptional activity. This repression involves a silencing ... [more ▼]

NeP1 binds to the F1 silencer element of the chicken lysozyme gene and, in the presence of TR, v-ERBA or RAR, synergistically represses transcriptional activity. This repression involves a silencing mechanism acting independently of the relative promoter position. Here we show that NeP1 alone can induce a significant directed bend on DNA. The chicken homologue of human NeP1, CTCF, shows identical binding and bending properties. In contrast, the isolated DNA binding domain of CTCF efficiently binds DNA, but fails to confer bending. Similarly, the TR-RXR hetero- or homodimer, binding adjacent to NeP1 at the F2 sequence, do not show significant DNA bending. The binding of the T3 ligand to TR changes neither the magnitude nor the direction of the NeP1 induced bend. However, when all factors are bound simultaneously as a quaternary complex, the TR-RXR heterodimer changes the location of the bend center, the flexure angle and the bending direction. [less ▲]

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See detailAn improved preparation method of benzyl and thenyl triphenylphosphonium salt
Zhang, Jian-Xin; Dubois, Philippe ULg; Jérôme, Robert ULg

in Synthetic Communications (1996), 26(16), 3091-3095

New benzyl and thenyl phosphonium salts have been prepared by an improved method in solution from the parent alcohols and triphenylphosphine hydrobromide. Benzyl-type alcohols containing a tertiary amine ... [more ▼]

New benzyl and thenyl phosphonium salts have been prepared by an improved method in solution from the parent alcohols and triphenylphosphine hydrobromide. Benzyl-type alcohols containing a tertiary amine can also be converted within high yields to phosphonium salts by removing the formed water by azeotropic distillation. Solvent (methylene chloride, chloroform and acetonitrile) and temperature have been chosen in close relation to the alcohol reactivity. Purification is straightforward and yields are relatively high. [less ▲]

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See detailMechanism of Single-Electron Capture by the Dichlorocarbene Dication.
Leyh, Bernard ULg; Hautot, D.

in Journal of the American Society for Mass Spectrometry (1996), 7

The single-electron capture (SEC) by dichlorocarbene with eight different atomic and molecular target gases, (CCl2)2++G->(CCl2)++G+, has been studied by product ion spectroscopy and ion kinetic energy ... [more ▼]

The single-electron capture (SEC) by dichlorocarbene with eight different atomic and molecular target gases, (CCl2)2++G->(CCl2)++G+, has been studied by product ion spectroscopy and ion kinetic energy spectroscopy. The experimental data have been interpreted in the framework of a theoretical model that describes the charge exchange process. Exothermic charge exchange is handled within the Landau-Zener model, whereas endothermic charge exchange is described by the Demkov model. The calculated data reproduce qualitatively the essential features of the experimental results: (1) the appearance of a reaction window centered at an exothermicity in the 4-4.5 eV range, (2) the lower SEC cross sections for endothermic charge exchange, (3) the wider internal energy distributions obtained for CCl2+ in the endothermic regime than in the exothermic one, which results in larger dissociation yields, (4) the excitation of molecular targets that accompany their ionization in the SEC process, and (5) the kinetic energy released on the CCl++Cl fragments in dissociative SEC. [less ▲]

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See detailIBD mapping of recessive traits in livestock: application to map the bovine syndactyly locus to chromosome 15
Charlier, Carole ULg; Farnir, Frédéric ULg; Berzi, P. et al

in Genome Research (1996), 6

Twelve animals affected with syndactyly or mulefoot were sampled in the Dutch black-and-white cattle population. Analysis of the pedigree data reveal that all of these individuals traced back to a single ... [more ▼]

Twelve animals affected with syndactyly or mulefoot were sampled in the Dutch black-and-white cattle population. Analysis of the pedigree data reveal that all of these individuals traced back to a single acknowledged carrier founder individual. Between seven and nine generations separated the founder from its 12 affected descendents. The 12 affected offspring were genotyped for a battery of 213 microsatellites spanning the 29 bovine autosomes. The resulting genotypes were analyzed using a maximum likelihood approach searching for shared homozygous haplotypes among affected individuals. Three candidate regions for the syndactyly locus emerged from this initial screening. syndactyly was shown to map to one of these candidate regions on chromosome 15 by genotyping 29 additional individuals linking founder and affected offspring and performing a conventional linkage analysis with the LINKAGE programs. This study illustrates the potential of identity-by-descent mapping in livestock populations. [less ▲]

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See detailUnimolecular Reaction Dynamics from Kinetic Energy Release Distributions. 2. A Study of the Reaction C6H5Br+->C6H5++Br by the Maximum Entropy Method.
Urbain, P.; Remacle, Françoise ULg; Leyh, Bernard ULg et al

in Journal of Physical Chemistry (1996), 100(19), 8003-8007

The kinetic translational energy released in the unimolecular fragmentation reaction C6H5Br+->C6H5++Br has been experimentally studied in the microsecond time scale and theoretically analyzed by the ... [more ▼]

The kinetic translational energy released in the unimolecular fragmentation reaction C6H5Br+->C6H5++Br has been experimentally studied in the microsecond time scale and theoretically analyzed by the maximum entropy formalism. The appropriate functional form relating the actual distribution to its prior distribution (eq.2.3) involves the square root of the kinetic energy (i.e. the momentum associated with the relative translational energy). A value of 0.26+/-0.02 eV is obtained by the entropy deficiency distribution at an internal energy of 0.85 eV above the reaction threshold. From this value, it can be concluded that 77% of the transition state phase space is efficiently sampled. [less ▲]

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See detailA Possible Role for the Alpha 1-->3 Galactosyl Epitope and the Natural Anti-Gal Antibody in Oncogenesis
Gollogly, L.; Castronovo, Vincenzo ULg

in Neoplasma (1996), 43(5), 285-9

Glycoconjugates and their antibodies are vital components of host-tumor interaction. This review concentrates on the oncological implications of research concerning the alpha gal triad; the alpha 1-->3 ... [more ▼]

Glycoconjugates and their antibodies are vital components of host-tumor interaction. This review concentrates on the oncological implications of research concerning the alpha gal triad; the alpha 1-->3 galactosyl epitope (alpha Gal), the enzyme responsible for its construction, alpha 1,3 galactosyl transferase (alpha 1-3GT), and its associated antibody: anti-gal. Alpha gal epitopes, previously assumed to be absent from human tissue, have been demonstrated on several human cancer cell lines, senescent red blood cells, and Graves' disease thyrocytes. Alpha-gal presence on neoplastic lines is correlated with increased metastatic formation in animal models. The mechanisms of human response to these neoantigens are complex, as natural anti-gal antibodies exist in high titers in normal sera, thus predicting immunological recognition of cells expressing alpha gal epitopes. Hypotheses vary regarding the pathogenic contributions of metastasis-associated phenomena such as de novo expression of alpha gal and its unmasking by desialylation. The means by which alpha gal is sporadically expressed in human tissue remain unknown, as the galactosyl transferase which produces this epitope in constitutively expressive animals has undergone significant mutation at the genomic level in humans. Pathological re-expression is presumed to require permissive changes at a cellular level. Detailing these alterations is a prerequisite to the comprehension of the metastatic phenotype. In this context, the possibility of therapeutic strategies affecting alpha gal expression are also discussed. [less ▲]

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See detailNew ribonucleotide reductase inhibitor, (E)-2′-deoxy-(fluromethylene) cytidine, acts as a radiosensitizer on human colon and cervix cancer cell lines
Coucke, Philippe ULg; LI, XY; Cottin, E et al

in Radiotherapy & Oncology (1996), 40(Supplément 1), 135

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See detailRole of the metallothioneins in metal regulation by the guillemot Uria aalge
Bouquegneau, Jean-Marie ULg; Debacker, Virginie ULg; Gobert, Sylvie ULg et al

in Comparative Biochemistry and Physiology. C : Comparative Pharmacology and Toxicology (1996), 113C(2), 135-139

Guillemots, like other seabird species living in the North Sea, appear to be heavily contaminated by copper. Metallothioneins are present in both liver and kidney but, at least in the specimens stranded ... [more ▼]

Guillemots, like other seabird species living in the North Sea, appear to be heavily contaminated by copper. Metallothioneins are present in both liver and kidney but, at least in the specimens stranded along the Belgian coast, fail to maintain constant the copper, zinc and cadmium load of the high molecular weight soluble proteins of both organs, stressing the potential toxic role of these metals, mainly copper. [less ▲]

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See detailLocalisation respiratoire d'un lymphosarcome cutané chez un cheval.
Anciaux, Nathalie; Amory, Hélène ULg

in Pratique Vétérinaire Equine (1996), 28

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See detailInfection of cattle with Yersinia enterocolitica O:9 a cause of the false positive serological reactions in bovine brucellosis diagnostic tests.
Weynants, V.; Tibor, A.; Denoel, P. A. et al

in Veterinary Microbiology (1996), 48(1-2), 101-12

During the last four years, an increasing number of cattle herds were classified positive by brucellosis screening tests in areas of Belgium and France free of the disease. No clinical symptom of ... [more ▼]

During the last four years, an increasing number of cattle herds were classified positive by brucellosis screening tests in areas of Belgium and France free of the disease. No clinical symptom of brucellosis was reported in these animals and no Brucella abortus strains were isolated. After two years, no brucellosis outbreak was registered in all of the herds concerned. On this basis, all the serological reactions observed were classified as false positive. An ELISA using Yersinia Outer membrane Proteins (YOPs) as antigens was developed in order to discriminate between a Yersinia enterocolitica O:9 infection and a Brucella abortus infection. Antibodies against YOPs were detected in sera from Y. enterocolitica O:9 experimentally infected cattle (n = 4) but not in sera from B. abortus experimentally infected cattle (n = 4). In a field study, 66.7% of the 174 serum samples from cattle presenting false positive serological reactions showed anti-YOPs antibodies whereas only 10% of 454 sera, classified negative by the brucellosis screening tests, showed anti-YOPs antibodies. Our results suggest that infections with Y. enterocolitica O:9 may cause false positive reactions in brucellosis testing. [less ▲]

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See detailFormal Methods: State of the Art and Future Directions
Clarke, Edmund M; Wing, Jeannette M; Alur, Rajeev et al

in ACM Computing Surveys (1996), 28(4), 626--643

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See detailLes constructions analogiques du futur III
Winand, Jean ULg

in Revue d'Egyptologie (1996), 47

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See detailFréquence et importance du charriage dans des rivières à charge de fond graveleuse
Petit, François ULg; Pauquet, A.; Pissart, Albert ULg

in Géomorphologie : Relief, Processus, Environnement (1996)

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See detailHigh prevalence of cardiovascular risk factors in children from the Belgian Luxembourg province. The Belgian Luxembourg Child Study.
Guillaume, Michèle ULg; Lapidus, L.; Beckers, F. et al

in American Journal of Epidemiology (1996)

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See detailLivestock Genomics Comes of Age
Georges, Michel ULg; Andersson, L.

in Genome Research (1996), 6(10), 907-21

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See detailCellular and molecular mechanisms involved in thymic T-cell education to neuroendocrine self principles
Geenen, Vincent ULg; Benhida, Abdellah; Kecha, Ouafae et al

in International Journal of Thymology (1996), 4

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See detailPurification of soybean lipoxygenase isoenzyme-1 and characterization of its inhibition by 13-hydroperoxides.
Fauconnier, Marie-Laure ULg; Marlier, M.

in Grasas y Aceites (1996), 47(4), 242-246

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See detailVariations interannuelles des précipitations mensuelles et leur répartition spatiale en Belgique
Alexandre, Jean ULg; Mabille, Georges ULg; Erpicum, Michel ULg

in Publication Association Internationale de Climatologie (1996), 9

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See detailCost effectiveness of treatment in osteoporosis
Reginster, Jean-Yves ULg

in Journal of Rheumatology (1996), 23(7), 1312-1313

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See detailPaget’s disease of bone : diagnosis and management
Hosking, D; Meunier, PJ; Ringe, JD et al

in British Medical Journal (1996), 312

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See detailExpression of protein encoded by varicella-zoster virus open reading frame 63 in latently infected human ganglionic neurons
Mahalingam, Ravy; Wellish, Mary; Cohrs, Randall et al

in Proceedings of the National Academy of Sciences of the United States of America (1996), 93(5), 2122-2124

The ganglionic cell type in which varicellazoster virus (VZV) is latent in humans was analyzed by using antibodies raised against in vitro-expressed VZV open reading frame 63 protein, VZV open reading ... [more ▼]

The ganglionic cell type in which varicellazoster virus (VZV) is latent in humans was analyzed by using antibodies raised against in vitro-expressed VZV open reading frame 63 protein, VZV open reading frame 63 protein was detected exclusively in the cytoplasm of neurons of latently infected human trigeminal and thoracic ganglia. This is, to our knowledge, the first identification of a herpesvirus protein expressed during latency in the human nervous system. [less ▲]

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See detailCloning and expression of a new HOXC6 transcript encoding a repressing protein
Chariot, Alain ULg; Castronovo, Vincenzo ULg; Le, P. et al

in Biochemical Journal (1996), 319

Homeodomain-containing proteins are transcription factors that regulate the co-ordinated expression of multiple genes involved in development, differentiation and malignant transformation. In an attempt ... [more ▼]

Homeodomain-containing proteins are transcription factors that regulate the co-ordinated expression of multiple genes involved in development, differentiation and malignant transformation. In an attempt to characterize expressed homeobox (HOX) genes in breast cancer cells, we cloned two distinct HOXC6 transcripts from an MCF7 cDNA library, Interestingly, one of them represents a new HOXC6 mRNA encoding a homeodomain-containing protein harbouring a unique N-terminal sequence. Moreover we demonstrate that this HOXC6 transcript is less abundant in human breast cancer cells than in non-tumorigenic cell lines, is detected in breast carcinomas and adjacent tissues and is expressed in a variety of human tumours. In addition, transient co-transfection experiments illustrated that both HOXC6 transcripts encode gene products that repress transcription from a HOX binding sequence in MDA-MB231 cells and co-operate with other HOX gene products such as HOXB7 on their target genes. Taken together, our results suggest that HOXC6 proteins might contribute to the breast cell phenotype through co-operative interactions with other HOX-derived proteins and repression of their target genes. [less ▲]

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See detailRichtlinien für eine verbesserte Therapiesstrategie bei Patienten mit Ostitis deformans Paget
Ringe, JD; Reginster, Jean-Yves ULg; Gennari, C et al

in Zeitschrift für Rheumatologie (1996), 55

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See detailEvolution des directions et des vitesses des vents de 1951 à 1994 sur la façade Atlantique de l’Afrique de l’Ouest du sud du Sénégal au nord de la Mauritanie.
Ozer, Pierre ULg

in Publications de l'Association Internationale de Climatologie (1996), 9

The Sahel is affected by a severe drought since the late 1960s. This paper analyses the potential fluctuations of wind on a 44-year period (1951-1994) on the Atlantic coast of West Africa. The change in ... [more ▼]

The Sahel is affected by a severe drought since the late 1960s. This paper analyses the potential fluctuations of wind on a 44-year period (1951-1994) on the Atlantic coast of West Africa. The change in wind direction could be a witness of a modification on a synoptic scale. The wind velocity recorded in four meteorological stations does not show any rise which could be linked with a continuous aridification. [less ▲]

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See detailPrévention de l’ostéoporose à Liège. Histoire d’un PIGEPS : dix ans plus tard.
Reginster, Jean-Yves ULg; DEROISY, Rita ULg; LECART, Marie-Paule ULg et al

in Santé Publique : Revue Multidisciplinaire pour la Recherche et l'Action (1996), 2

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See detailHow complex can be the Unimolecular Decomposition of a simple Molecule? The case of Acetylene. An Electron Impact and PIPECO Investigation.
Locht, Robert ULg; Servais, Christian ULg

in Zeitschrift für Physikalische Chemie (1996), 195

The dissociative ionization of C2H2, C2D2 and C2HD is presented in this work. Excepting the H2+ formation, all dissociation channels are thoroughly investigated by electron impact. The translational ... [more ▼]

The dissociative ionization of C2H2, C2D2 and C2HD is presented in this work. Excepting the H2+ formation, all dissociation channels are thoroughly investigated by electron impact. The translational energy distribution as a function of the impinging electron energy and the appearance energy as a function of the translational energy are measured for all fragment ions. KE versus AE diagrams are obtained and the isotope effect is examined. All observed thresholds are analyzed in detail and dissociation mechanisms are proposed. For the C2H+ ion the PIPECO technique has also been used. From these discussions the H-C2H, HC-CH and H-C2 binding energy values are proposed, i.e. 5.33+/-0.23 eV, 9.83+/0.10 eV and 5.44+/-0.40 eV respectively. The fragmentation path leading to C+, CH2+ and C2+ are discussed in terms of dissociation mechanisms involving the transient vinylidene structure of the molecular ion as an intermediate. [less ▲]

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See detailSelection and identification of lumped models of the arterial vasculature using multiple regression and backward elimination in the time domain
POCHET, T; GERARD, P; LAMBERMONT, Bernard ULg et al

in Medical & Biological Engineering & Computing (1996), 34

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See detail"Born to be wild oder doch geleernt?" Neue verhaltensmedizinische Erkenntnisse zur Ätiopathogenese der Migräne
Gerber, W. D.; Kropp, P.; Schoenen, Jean ULg et al

in Verhaltenstherapie (1996), 6

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See detailExperimental research on the determination of the main parameters affecting the behaviour of reinforced concrete columns under fire conditions
Dotreppe, Jean-Claude ULg; Franssen, Jean-Marc ULg; Bruls, Alois et al

in Magazine of Concrete Research (1996), 48(6), 117-127

The design of reinforced concrete columns under fire conditions is generally made on the basis of national and international recommendations. The CEB/FIP recommendations have been used for many years ... [more ▼]

The design of reinforced concrete columns under fire conditions is generally made on the basis of national and international recommendations. The CEB/FIP recommendations have been used for many years. Recently, in the framework of the Eurocodes, the document ENV 1992-1-2 (Eurocode 2-1-2), Structural fire design, has been approved by Commission CEN/TC250/SC2 of the European Committee for Standardization. In the CEB/FIP documents and in Eurocode 2-1-2 the main part is devoted to design from tabulated data containing the dimensions of the cross-sections and values for the concrete cover. The use of simplified calculation methods is not current practice for concrete elements, while they are widely used in the case of steel. The determination of the temperature distribution in the cross-section does not facilitate the development of a simplified method. Furthermore, in columns there is a wide scatter of experimental results. In order to gain additional information, an extensive experimental research programme on the behaviour of reinforced concrete columns under fire conditions, financially supported by the Belgian Funds for Fundamental Collective Research (FRFC-FKFO), has been performed at the Universities of Liege and Ghent. In this article the results of this research are presented and the influence of the main parameters is analysed. [less ▲]

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See detailAnalysis of synchronization constraints and associated errors in collective work environments
Nyssen, Anne-Sophie ULg; Javaux, D.

in Ergonomics (1996), 39(10), 1249-1264

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See detailInsectes ravageurs: Protection des grains stockés
Mignon, Jacques ULg; Haubruge, Eric ULg; Gaspar, Charles

in Agricontact (1996), 287

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See detailRecommendations for registration of drugs used in the treatment of osteoarthritis
Dougados, M; Devogelaer, JP; Annefeldt, M et al

in Annals of the Rheumatic Diseases (1996), 55

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See detailDélocalisation d'une division de l'entreprise et intérêt social
Thirion, Nicolas ULg

in Revue pratique des sociétés (1996), (1), 60-90

Les titulaires d'intérêts catégoriels dans une société (tels que les travailleurs) disposent-ils d'un droit d'agir en justice au nom de l'intérêt social, à la suite de la décision de délocalisation de l ... [more ▼]

Les titulaires d'intérêts catégoriels dans une société (tels que les travailleurs) disposent-ils d'un droit d'agir en justice au nom de l'intérêt social, à la suite de la décision de délocalisation de l'activité sociétaire? [less ▲]

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See detailTaurine increases in the nucleus accumbens microdialysate after acute ethanol administration to naive and chronically alcoholised rats
Dahchour, Abdelkhader; Quertemont, Etienne ULg; De Witte, Philippe

in Brain Research (1996), 735

The extracellular changes of amino acids glutamate, taurine and GABA in the nucleus accumbens of freely moving rats were estimated using the microdialysis technique following acute and chronic ethanol ... [more ▼]

The extracellular changes of amino acids glutamate, taurine and GABA in the nucleus accumbens of freely moving rats were estimated using the microdialysis technique following acute and chronic ethanol injections (1, 2, and 3 g/kg body weight). Compared to baseline values, taurine increased by 154%, 142% and 162%, 20 min after the acute injection of, respectively, 1, 2 and 3 g/kg body weight ethanol, while 40 min after ethanol injection, taurine had increased by 124%, 146% and 168%. No changes in either glutamate or GABA were detected at any time points assayed. In the rats which had received chronic ethanol administration prior to a further acute ethanol injection (1, 2, and 3 g/kg body weight), taurine increased by 138%, 144% and 180%, 20 min after the ethanol injection, and at 40 min post ethanol injection taurine had increased by 134%, 160% and 158%, compared to the basal baseline value. No significant changes were observed in either glutamate or GABA microdialysate content in these chronic studies. The biological role played by taurine after acute ethanol injection in the nucleus accumbens remains unclear but may be associated with a yet, undefined mechanism, in reducing the cytotoxicity of ethanol. [less ▲]

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See detailComparison of some modules of the Lie algebra of vector fields
Lecomte, Pierre ULg; Mathonet, Pierre ULg; Tousset, E.

in Indagationes Mathematicae (1996), 7(4), 461-471

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See detailMicroscopic observation of the retinal photoreceptor layer of the common barbel (Teleostei: Cyprinidae)
Compère, Philippe ULg; Poncin, Pascal ULg

in Belgian Journal Of Zoology (1996), 126(1), 49-56

Light and electron microscopic observations show that cones-belonging to four types are present in the retina of the common barbel Barbus barbus (L.): short single cones, long single cones, twin cones ... [more ▼]

Light and electron microscopic observations show that cones-belonging to four types are present in the retina of the common barbel Barbus barbus (L.): short single cones, long single cones, twin cones, and unequal double cones. They do not exhibit any particular arrangement. Estimates of cone density suggest that the common barbel has multichromatic vision but of low acuity and that no difference exists between the lower and the upper parts of the retina. Both cone density (approximately 3000 units/mm(2)) and the proportion of double cones to single cones (approximately 1:3) are low. The view that the barbel has an inferior colour vision is in good agreement with the fact that this species is active mainly at twilight, but with diurnal activity during spawning. [less ▲]

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See detailDemande d'indemnisation des dommages dus aux plans : éléments de recevabilité et de fondement
Delnoy, Michel ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (1996)

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See detailIntensive culture of juvenile and adult Eurasian perch (P. fluviatilis): effect of major biotic and abiotic factors on growth
Mélard, Charles ULg; Kestemont, P.; Grignard, J. C.

in Journal of Applied Ichthyology (1996), 12

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See detailDescription des plantules de quatre Caesalpiniacées africaines
Léonard, J.; Doucet, Jean-Louis ULg

in Bulletin du Jardin Botanique National de Belgique = Bulletin van de Nationale Plantentuin van België (1996), 66

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See detailMélanges Pierre Colman
Duchesne, Jean-Patrick ULg

in Art&fact (1996), 15

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See detailAlterations in the ultradian oscillations of insulin secretion and plasma glucose in aging.
Scheen, André ULg; Sturis, J.; Polonsky, K. S. et al

in Diabetologia (1996), 39(5), 564-72

Normal insulin secretion includes oscillations with a period length of 80-150 min which are tightly coupled to glucose oscillations of similar period. To determine whether normal aging is associated with ... [more ▼]

Normal insulin secretion includes oscillations with a period length of 80-150 min which are tightly coupled to glucose oscillations of similar period. To determine whether normal aging is associated with alterations in these ultradian oscillations, eight, modestly overweight, older men (65 +/- 5 years) and eight weight-matched young control subjects (25 +/- 4 years) were studied during 53 h of constant glucose infusion. Blood samples were collected every 20 min and insulin secretion rates were calculated by deconvolution. Ultradian oscillations of glucose and insulin secretion were evident in both groups. Pulse frequency was similar for glucose and insulin secretion, and was not affected by age. The absolute amplitude of the glucose oscillations was similar in both groups but their relative amplitude was slightly dampened in the older adults. Both the absolute and the relative amplitudes of insulin secretory oscillations were markedly reduced in the older subjects. The normal linear increase in the amplitude of insulin oscillations occurring with increasing amplitudes of glucose oscillations was still present in the older adults but analysis of covariance indicated that the slope was significantly lower than in the young control subjects (p < 0.0005), reflecting a decreased responsiveness of the beta cell to glucose changes. The temporal concordance between insulin and glucose oscillations, as estimated by pulse concomitancy and cross-correlation, was also lower in older subjects. The similarities between the alterations in the ultradian oscillations of insulin secretion and glucose in older healthy adults and those occurring in diabetic patients suggest that an impairment of beta-cell function may play a primary role in the deterioration of glucose tolerance in aging. [less ▲]

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See detailManger juste. Les droits de l'animal dans les encyclopédies de 1750 à 1800. De l'éthique au politique
Strivay, Lucienne ULg

in Colloques d'Histoire des Connaissances Zoologiques (1996), 7

Les encyclopédistes du 18° inclurent leurs définitions de la spécificité humaine par rapport à celle de l'animal dans leur nouvelle synthèse du savoir. A la même époque, resurgit le concept des "droits de ... [more ▼]

Les encyclopédistes du 18° inclurent leurs définitions de la spécificité humaine par rapport à celle de l'animal dans leur nouvelle synthèse du savoir. A la même époque, resurgit le concept des "droits de l'animal" (relayant les anciens procès intentés à des animaux). La communication examine comment Diderot et d'Alembert, Panckoucke, Robinet, De Lisle de Sales, Valmont de Bomare, etc., s'y prirent pour concilier les droits de l'homme et ceux de l'animal dans les articles de leurs encyclopédies. Si l'animal appartient à la catégorie de "l'autre", sa proximité avec l'homme, en raison du développement des premières intuitions transformistes et du sensualisme matérialiste, s'affirme de plus en plus, en opposition au cartésianisme qui considérait l'animal comme une machine et l'écartait, par essence, de l'homme et de Dieu. En conséquence, les points de vue qui s'expriment au siècle des Lumières au sujet des animaux ont suscité des idées dérangeantes sur le lien unissant tous les êtres vivants entre eux et, d'autre part, ils ont soulevé de nouvelles questions, les unes théoriques : au sujet de l'origine des espèces, les autres pratiques : sur le droit de l'homme à manger les animaux, le choix des viandes et ses conséquences morales, voire politiques. Car, fondé comme il l'est sur des formes de violence publique ou privée, l'abattage des animaux afin de produire de la viande a toujours eu de nombreuses implications, notamment sociales, propres à induire finalement des réformes ou des changements d'ensemble. [less ▲]

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See detailPerforation Strength of Geosynthetics and Sphericity of Coarse Grains: a new approach
Courard, Luc ULg; Antoine, R.

in Geotextiles & Geomembranes (1996), 14

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See detailRelationship between Parathion and Paraoxon Toxicokinetics, Lung Metabolic Activity, and Cholinesterase Inhibition in Guinea Pig and Rabbit Lungs
Lessire, Françoise ULg; Gustin, Pascal ULg; Delaunois, Annie et al

in Toxicology and Applied Pharmacology (1996), 138(2), 201-210

Kinetic parameters of parathion and paraoxon uptake were determined in isolated and perfused rabbit and guinea pig lungs. They were related to organophosphate-induced lung cholinesterase inhibition. A ... [more ▼]

Kinetic parameters of parathion and paraoxon uptake were determined in isolated and perfused rabbit and guinea pig lungs. They were related to organophosphate-induced lung cholinesterase inhibition. A single pass procedure was used to perfuse the lungs with an artificial medium perfusate containing paraoxon or parathion. The paraoxon and parathion concentrations were determined in the effluents collected at chosen intervals over an 18-min period beginning at the start of perfusion. Three inflowing concentrations (1 nmol/ml, 10 nmol/ml, and 20 nmol/ml) were tested in guinea pig lungs and one (10 nmol/ml) in rabbit lungs. Cholinesterase activity was determined at time 0 and at the end of the experiment. The lungs abundantly extracted paraoxon and parathion over the perfusion period. The extraction ratio was consistently greater in guinea pig than in rabbit lungs. The uptake velocity varied biexponentially in time, suggesting the existence of two compartments. Initial uptake velocities (A, B) and slopes (alpha and beta) were calculated for both compartments. In guinea pigs, A, B and A + B increased proportionally to the supply rate of paraoxon and parathion while a and b remained constant. No significant difference was observed between parathion and paraoxon uptake kinetics. Parameter B was the only one to differ significantly between the two species (rabbits: 8.19 +/- 1.53 for parathion and 6.85 +/- 1.26 for paraoxon; guinea pigs: 12.75 +/- 0.88 for parathion and 15.02 +/- 3.84 for paraoxon). In the lungs of both species, there was a linear relation between y, the percentage of cholinesterase inhibition induced by either organophosphate, and X, the total amount of drug taken up by the lung tissue (in nmol/g/18 min). The following equations were obtained: y = 0.128 x + 0.979 (R2 = 0.89, p < 0.001 for paraoxon); y = 0.120 x - 6.57 (R2 = 0.82, p < 0.005 for parathion). No difference was observed between the two organophosphates. After treatment with the cytochrome P450 inhibitor piperonyl butoxide, the above relations ceased to apply, but this treatment did not influence the kinetics of paraoxon and parathion uptake. The IC50 value calculated for paraoxon, i.e., the paraoxon concentration required to produce 50% inhibition of lung cholinesterase activity, was similar for guinea pigs (2.22 10(-7) +/- 0.22 M) and rabbits (2.36 10(-7) +/- 0.24 M). In conclusion, the biexponential evolution of the velocity of paraoxon and parathion uptake by the lungs thus demonstrates the presence of two pools. The lower extraction ratios calculated for rabbit lungs reflect the lower initial uptake velocity of the second compartment. In the range of concentrations investigated in guinea pigs, no saturable mechanism could be demonstrated for paraoxon and parathion. Cytochrome P450-related lung metabolic activity, through which parathion is converted to paraoxon, appears as a major step in parathion-induced lung cholinesterase inhibition, although it does not appear to affect parathion toxicokinetics [less ▲]

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See detailRetard neuromoteur et neuropsychologique: critères de recours à une prise en charge spécialisée
Misson, Jean-Paul ULg; Dubru, Jean-Marie ULg; Leroy, Patricia et al

in Percentile (1996), .(3), 103-107

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See detailActivated forms of MMP2 and MMP9 in abdominal aortic aneurysms.
SakalihasanN, Natzi ULg; Delvenne, Philippe ULg; Richelle, Betty ULg et al

in Journal of Vascular Surgery (1996), 24(1), 127-33

PURPOSE: This consistent observation of a reduction of the elastin concentration in abdominal aortic aneurysms (AAAs) has led us to investigate in AAA specimens two metalloproteinases that display ... [more ▼]

PURPOSE: This consistent observation of a reduction of the elastin concentration in abdominal aortic aneurysms (AAAs) has led us to investigate in AAA specimens two metalloproteinases that display elastase activity, MMP2 (gelatinase A/72kDa) and MMP9 (gelatinase B/92 kDa). METHODS: Samples of full-thickness aortic wall, adherent thrombus, and serum were collected in 10 patients with AAAs. Samples of normal aortic wall and serum were taken from 6 age-matched control patients. Quantitative gelatin-zymography and gelatinolytic soluble assays after acetyl-phenyl mercuric acid activation were performed on serum and tissue extracts, and the results were expressed in units on a comparative wet-weight basis. Histologic analysis was performed in parallel to score the inflammatory infiltrate. RESULTS: The luminal and parietal parts of the thrombus contained, respectively, 20- and 10-fold more gelantinolytic activity than the serum. The predominate form was MMP9. Although the total gelatinolytic activity was in the same range both in AAAs and in normal walls, a significantly higher proportion of MMP9 was found in the aneurysmal aortic walls. Furthermore, a significant proportion of MMP9 was under its processed active form, which was never observed in normal samples. A significantly higher proportion of MMP2 was also present as processed active form in AAA wall. This latter parameter positively correlated with the inflammatory score. CONCLUSIONS: The presence of activated MMP9 and MMP2 might contribute to the degradation of the extracellular matrix proteins that occurs during the development of aneurysms. [less ▲]

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See detailLa dérivée schwarzienne
Bair, Jacques ULg; Haesbroeck, Gentiane ULg

in Mathématique et Pédagogie (1996), 108

Dans cette note est introduit le concept de dérivée schwarzienne pour une fonction réelle univariée. Diverses propriétés et applications sont également proposées.

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See detailCompte rendu de Villages et villageois au Moyen Age, Paris, 1992
George, Philippe ULg

in Cahiers de Clio (1996)

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See detailPistoi Hermeneis. La traduction orale en Grèce
Rochette, Bruno ULg

in Revues des Etudes grecques (1996), 109(2), 325-347

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See detailAssessment of the cell-mediated immunity in cattle infection after bovine herpesvirus 4 infection, using an in vitro antigen-specific interferon-gamma assay.
Godfroid, J.; Czaplicki, G.; Kerkhofs, P. et al

in Veterinary Microbiology (1996), 53(1-2), 133-41

The cell-mediated immunity (CMI) following bovine herpesvirus 4 (BHV4) infection has been poorly investigated in cattle. The in vivo response measured by a delayed type of hypersensitivity (DTH) assay has ... [more ▼]

The cell-mediated immunity (CMI) following bovine herpesvirus 4 (BHV4) infection has been poorly investigated in cattle. The in vivo response measured by a delayed type of hypersensitivity (DTH) assay has been reported to be positive in only few animals showing serological evidences of BHV4 infection. We have investigated the CMI following BHV4 infection by an in vitro antigen-specific interferon gamma (IFN-gamma) release assay, as an indicator of an actively acquired immunity to BHV4. Our preliminary results using a partially purified antigen suggest that there was a measurable CMI in 75 out of 168 animals (44.4%) originating from a farm with a clinical history and serological evidences (76.3% seropositivity) of BHV4 infection. If the results of serological tests and BHV4 IFN-gamma test are interpreted in parallel, 81.5% of the animals are classified positive, demonstrating the complementarity of these tests. The specificity of the BHV4 IFN-gamma test was supported by the absence of a measurable CMI in 41 animals originating from a farm with no clinical history or serological evidence of BHV4 infection. In an allied study, we developed a bovine herpesvirus 1 (BHV1) IFN-gamma test. This allowed us to measure the antigen specific IFN-gamma release after stimulation with a mixture of BHV1 and BHV4 antigens. Animals that were classified negative by the BHV4 IFN-gamma test and by the BHV1 IFN-gamma test, were classified negative after stimulation with a mixture of both antigens. Animals that were classified positive by the BHV4 IFN-gamma test or the BHV1 IFN-gamma test, were classified positive after stimulation with a mixture of both antigens. Taken together these results suggest that the in vitro assessment of the CMI after BHV4 infection should be further investigated as a specific and valuable alternative to the DTH assay. [less ▲]

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See detailInfluence of Van Hove singularity on the electronic specific heat of high-Tc superconductors
Dorbolo, Stéphane ULg; Houssa, Michel; Ausloos, Marcel ULg

in Physica C: Superconductivity (1996)

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See detailGranuloma tuberculoide post-herpético en un paciente con leucemia linfocítica crónica
Nikkels, Arjen ULg; Arrese Estrada, Jorge ULg; Pierard, Gérald ULg

in Medicina Cutanea Ibero-Latino-Americana (1996), 24

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See detailMarginalia Vergiliana
Rochette, Bruno ULg

in Zeitschrift für Papyrologie und Epigraphik (1996), 114

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See detailPhylogenetic Relationships of Nonaxenic Filamentous Cyanobacterial Strains Based on 16S rRNA Sequence Analysis
Nelissen, Bart; De Baere, Raymond; Wilmotte, Annick ULg et al

in Journal of Molecular Evolution (1996), 42

In order to determine the nearly complete 16S rRNA gene sequences of cyanobacteria originating from nonaxenic cultures, a cyanobacterium-specific oligonucleotide probe was developed to distinguish ... [more ▼]

In order to determine the nearly complete 16S rRNA gene sequences of cyanobacteria originating from nonaxenic cultures, a cyanobacterium-specific oligonucleotide probe was developed to distinguish polymerase chain reaction (PCR) products of the cyanobacterial rRNA operons from those resulting from amplification of contaminating bacteria. Using this screening method the 16S rRNA genes of four nonaxenic filamentous cyanobacterial strains belonging to the genera Leptolyngbya and OscitIatoria were cloned and sequenced. For the genus Leptolyngbya, the 16S rRNA sequence of the axenic strain PCC 73110 was also determined. Phylogenetic trees were constructed based on complete and partial sequences. The results show that the strains Leptolyngbya Jbveolarum Kom~rek 1964/112, Leptolyngbya sp. VRUC 135 Albertano t985/1, and LeptoIyngbya boryanum PCC 73110 belong to the same cluster. Strain Oscillatoria cf. corallinae SAG 8.92, which contains the rare photosynthetic pigment CUphycoerythrin, is not closely related to other CUphycoerythrin- containing cyanobacteria. Oscillatoria agardhii CYA 18, which is a representative of planktonic Oscillatoria species that form toxic blooms in Norwegian inland waters, has no close relatives in the tree. [less ▲]

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See detailTabac et maladie parodontale
Geerts, Sabine ULg

in Actualités Dentaires de l'Université de Liège (1996), 19

Le tabac est un facteur aggravant la parodontite. Beaucoup d'études cliniques ont été menées et ont souvent montré des résultats contradictoires. Cet article est une revue de littérature sur la relation ... [more ▼]

Le tabac est un facteur aggravant la parodontite. Beaucoup d'études cliniques ont été menées et ont souvent montré des résultats contradictoires. Cet article est une revue de littérature sur la relation entre le tabagisme et la parodontite. [less ▲]

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See detailImproved RAPD amplification of recalcitrant plant DNA by the use of activated charcoal during DNA extraction.
Vroh Bi, I.; Harvengt, L.; Chandelier, A. et al

in Plant Breeding (1996), 115(3),

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See detailcr de E. Wente, Letters from Ancient Egypt
Winand, Jean ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1996), 71(141), 57-62

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See detailL’expérience du SEGEFA en géographie appliquée
Merenne-Schoumaker, Bernadette ULg

in Géographes Associés (1996), (19), 25-29

Presentation and critical analysis of the experience in applied geography SEGEF

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See detailEnhancement of nuclear receptor transcriptional signalling.
Renkawitz, Rainer; Kaltschmidt, Christian; Leers, Joerg et al

in Journal of Steroid Biochemistry & Molecular Biology (1996), 56(1-6 Spec No), 39-45

Glucocorticoids and thyroid hormones induce complex responses in about every mammalian tissue. These effects are mediated by the transcription factor function of the corresponding nuclear receptors, which ... [more ▼]

Glucocorticoids and thyroid hormones induce complex responses in about every mammalian tissue. These effects are mediated by the transcription factor function of the corresponding nuclear receptors, which in most cases achieve the observed regulatory strength in synergy with other factors. Here we describe the functional interaction of the glucocorticoid receptor (GR) with liver-specific transcription factors, the functional synergy of GR with the thyroid hormone receptor (TR), the synergizing sub-domains of the TR, and finally the direct interaction of the GR with other proteins. [less ▲]

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See detailEstimations du taux de la plus-value en Belgique (1948-1994): méthode et résultats
Geerkens Provin, Eric ULg

in Contradictions (1996), (78-79), 85-98

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See detailHyperfine structure of infrared Al II lines
Palmeri, P.; Biémont, Emile ULg

in Journal of Physics : B Atomic Molecular & Optical Physics (1996), 29

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See detailRheumatic and musculoskeletal diseases and impaired quality of life. A challenge for rheumatologists
Morales-Torres, J; Reginster, Jean-Yves ULg; Hochberg, MC

in Journal of Rheumatology (1996), 23

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See detailCompte rendu de l'ouvrage de ANDORLINI Isabella (Edizione e commento a cura di), Trattato di medicina su papiro, Firenze, Istituto Papirologico "G. Vitelli", 1995
Marganne, Marie-Hélène ULg

in Chronique d'Egypte : Bulletin Périodique de la Fondation Egyptologique Reine Elisabeth (1996), 71

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See detailAssessment of residual insulin secretion in diabetic patients using the intravenous glucagon stimulatory test: methodological aspects and clinical applications.
Scheen, André ULg; Castillo, M. J.; Lefebvre, Pierre ULg

in Diabètes & Métabolism (1996), 22(6), 397-406

Defective insulin secretion plays a crucial role in insulin-dependent (Type 1) and non-insulin-dependent (Type 2) diabetes mellitus as well as in many secondary forms of the disease. Glucagon is a potent ... [more ▼]

Defective insulin secretion plays a crucial role in insulin-dependent (Type 1) and non-insulin-dependent (Type 2) diabetes mellitus as well as in many secondary forms of the disease. Glucagon is a potent stimulus for the islet beta-cell, and intravenous bolus injection of 1 mg glucagon has been widely used to assess endogenous insulin secretion for clinical or research purposes. Plasma C-peptide levels (less commonly insulin) are usually measured immediately before and 6 min after glucagon injection. The C-peptide response to glucagon is well-correlated with the beta-cell response to mixed meals or other stimuli commonly used to characterize endogenous insulin secretion (oral or intravenous glucose, standard meals, arginine, etc.) and has the advantage of shorter duration and simple standardization. The glucagon test shows good intra-subject reproducibility, although in diabetic patients it may be influenced by variable prevailing blood glucose levels. Several applications of the glucagon test have been developed. In Type 1 diabetes, the glucagon test has been used to discriminate between patients with and without residual insulin secretion. This can be especially important during the first few months, or even years, following initiation of insulin therapy when attempts to stop the immunological destruction of the beta-cell are made. Assessment of endogenous insulin secretion is also important after pancreas or islet transplantation. In patients with Type 2 diabetes mellitus, in which residual endogenous insulin secretion is common, characterization of the disease may help in the choice of therapy for the individual patient (insulin, sulphonylureas or combined therapy). Thus, the glucagon test is a simple, reliable and useful tool for clinical evaluation of diabetes mellitus. [less ▲]

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See detailLe cheval de trait ardennais convient-il pour l'attelage sportif
Crigel, MH; Art, Tatiana ULg; Votion, Dominique ULg et al

in Pratique Vétérinaire Equine (1996), 28

The Ardennais draught horse (DH) is more and more used for harnessing competitions. The aim of this study was to improve our knowledge of its cardiorespiratory peculiarities, both at rest and during ... [more ▼]

The Ardennais draught horse (DH) is more and more used for harnessing competitions. The aim of this study was to improve our knowledge of its cardiorespiratory peculiarities, both at rest and during exercise. At rest, arterial blood gas analysis, venous blood analysis, a test of mechanics of breathing and an endoscopy of the upper airways were performed. Experiments during exercise were performed on a treadmill. The intensity of the standardised test was sufficient to overshoot the OBLA threshold. The test was of increasing intensity and lasted 22 min. The cardiorespiratory parameters were measured during the last 5 min. Expired volume minute (VE), VT and f were measured. Respiratory O2 and CO2 fraction were measured with a mass spectrometer. Oxygen uptake (VOA, CO2 output (VCO2) and VE/VO2 were calculated. Heart rate (HR) was continuously measured.The results were compared to data recorded in standarbred horses (SH) during a treadmill exercise test leading to a similar lactaci¬demia (LA) and peak HR.The DH have a significantly lower V02 than the SH while running at an exercise intensity inducing the same HR and LA modifications. The lower aerobic capacity of DH was at least partly correlated with their higher cost of breathing and lower blood gas transport capacity.Moreover, other measurements have been performed infield conditions, during 4 draft competitions, i.e. speed, maniability, power and endurance. Venous blood analyses before and after the competition, heart rate and body temperature measurements were performed. The results of this second set of measurements confirm the results obtained in the laboratory and allow assessing that these kinds of competition do not induce dramatic physiological modifications and therefore respect the welfare and limits of these horses. [less ▲]

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See detailInactivated Bovine Herpesvirus 1 Induces Apoptotic Cell Death of Mitogen-Stimulated Bovine Peripheral Blood Mononuclear Cells
Hanon, E.; Vanderplasschen, Alain ULg; Lyaku, S. et al

in Journal of Virology (1996), 70(6), 4116-4120

Bovine herpesvirus 1 (BHV-1) is able to inhibit the proliferation of bovine peripheral blood mononuclear cells. Here, we have demonstrated that live BHV-1 and, interestingly, inactivated BHV-1 can induce ... [more ▼]

Bovine herpesvirus 1 (BHV-1) is able to inhibit the proliferation of bovine peripheral blood mononuclear cells. Here, we have demonstrated that live BHV-1 and, interestingly, inactivated BHV-1 can induce apoptosis of mitogen-stimulated bovine peripheral blood mononuclear cells in vitro. [less ▲]

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See detailBessy & Chateauraynaud : Experts et faussaires
Melard, François ULg

in Recherches sociologiques (1996), 2

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See detailLes drogues prohibées
Lequarré, Françoise; Verjans, Pierre ULg

in Courrier Hebdomadaire du CRISP (1996), (n° 1506-1507),

Les politiques publiques vis-à-vis des produits psychotropes illustrent le va-et-vient entre une politique sécuritaire et une politique sanitaire, en fonction des produits et en fonction des époques.

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See detailPratiques d'auto-formation : une enquête en communauté française de Belgique
Denis, Brigitte ULg

in Cahiers d'Etudes du C U E E P (1996), 32-33

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See detailSeasonal temperature and salinity fields in the Mediterranean Sea: Climatological analyses of a historical data set
Brasseur, P.; Beckers, Jean-Marie ULg; Brankart, J. M. et al

in Deep-Sea Research Part I, Oceanographic Research Papers (1996), 43(2), 159-192

Climatological analyses of a historical data base have been carried out with the aim of reconstructing the three-dimensional temperature and salinity fields in the Mediterranean Sea. Seasonal and monthly ... [more ▼]

Climatological analyses of a historical data base have been carried out with the aim of reconstructing the three-dimensional temperature and salinity fields in the Mediterranean Sea. Seasonal and monthly distributions of hydrographic properties have been computed by a variational inverse method as an alternate to the standard Gandin (1969; Objective analysis of meterological fields, Israeli Program for Scientific Translation, Jerusalem) procedure. The spline solutions of the minimization problem are demonstrated to be numerically and theoretically equivalent to field estimates obtained by conventional objective analysis. The application of a finite-element technique allows analysis to be performed in the model space rather than in the observational space, which substantially improves the numerical efficiency of the procedure. The parameters of the scheme are adjusted according to the statistics of the climatological data. The results,realized as gridded data sets (horizontal resolution of 0.25 degrees), show some trends in seasonal variability affecting the properties of water masses. As expected, the upper layer is subject to a well-defined seasonal signal affecting both the temperature and salinity fields. Error maps, reflecting the degree of uncertainty in the analyses, have been systematically produced. The present work is conceived as a basic support to more advanced studies such as diagnostic calculations, initialization of dynamical models, assimilation of hydrological data into primitive equation models, or planning of experimental surveys. New versions of the climatological fields will be released as data are added to the historical data base. Copyright (C) 1996 Elsevier Science Ltd. [less ▲]

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See detailAcrylonitrile on Cu(100): a density functional theoretical study of adsorption and electrochemical grafting
Geskin, V. M.; Lazzaroni, Roberto; Mertens, Marc et al

in Journal of Chemical Physics (1996), 105(8), 3278-3289

We present a density functional theoretical study of neutral and negatively charged complexes of acrylonitrile (AN) with several clusters representing the Cu(100) surface. An external electric field is ... [more ▼]

We present a density functional theoretical study of neutral and negatively charged complexes of acrylonitrile (AN) with several clusters representing the Cu(100) surface. An external electric field is used to induce electron transfer onto the adsorbed molecule, in order to model the initial stage of electrochemical polymerization of AN on a copper electrode. We compare different possibilities of AN interaction with the metal and determine the most favorable configurations of the adsorbates in the absence and in the presence of the electric field. We discuss the influence of the electrochemical polarization on the type of AN adsorption, in relation with the experimental data on the adsorption of AN and electrochemical grafting of polyacrylonitrile. [less ▲]

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See detailMolecular Evidence That The Whitefly-Transmitted Sweetpotato Mild Mottle Virus Belongs To A Distinct Genus Of The Potyviridae
Colinet, Dominique; Kummert, Jean; Lepoivre, Philippe ULg

in Archives of Virology (1996), 141(1), 125-135

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See detailGuide bibliographique pour l'histoire de la principauté de Liège au 18e siècle : La vie intellectuelle
Droixhe, Daniel ULg; Vanwelkenhuyzen, Nadine ULg

in Annuaire d'Histoire Liégeoise (1996), Numéro spécial

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See detailImages liées à la pathologie traumatique du système nerveux central
Leroy, Patricia; Dubru, Jean-Marie ULg; Misson, Jean-Paul ULg

in Acta Paediatrica Belgica (1996), 28(3), 216

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See detailCes histoires que l'on construit et que l'on se raconte...
Guillaume, Jean-François ULg

in Cahiers Internationaux de Sociologie (1996), 100

A partir des réflexions de Paul Ricoeur sur la temporalité et la narrativité, l'A. envisage les processus discursifs de construction identitaire chez les jeunes gens en fin de scolarité obligatoire. L ... [more ▼]

A partir des réflexions de Paul Ricoeur sur la temporalité et la narrativité, l'A. envisage les processus discursifs de construction identitaire chez les jeunes gens en fin de scolarité obligatoire. L'identité en construction est appréhendée à travers le récit qu'ils donnent de leurs projets d'avenir et de leur histoire familiale. La présentation de soi, perçue dans cette double dimension, est soumise à un ensemble de schèmes ou de modèles narratifs culturellement ancrés et socialement véhiculés. Elle prend forme et se constitue en une totalité cohérente et intelligible par une « mise en intrigue » de la diversité des péripéties vécues ou imaginées. [less ▲]

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See detailPreliminary study of the Black Sea's plankton bloom
Grégoire, Marilaure ULg; Beckers, Jean-Marie ULg; Nihoul, Jacques ULg et al

in Bulletin de la Société Royale des Sciences de Liège (1996), 65(1), 91-94

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See detailA propos de la genèse des orthostates néo-assyriens
Tunca, Önhan ULg

in Tablettes et images aux pays de Sumer et d'Akkad. Mélanges offerts à Monsieur H. Limet (A.P.H.A.O. Mémoires n° 1) (1996)

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See detailCalculation of inner shell transitions in Mn+
Quinet, Pascal ULg; Hibbert, A

in Journal of Physics : B Atomic Molecular & Optical Physics (1996), 29

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See detailAbsolute configuration of (R)-1-phenylethyl ammonium (S)-2-(6-methoxy-2-naphthyl)-propionate
Dupont, L.; Pirotte, Bernard ULg; De Tullio, Pascal ULg et al

in Acta Crystallographica (1996), C52

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See detailTheory of the thermal conductivity of metallic localized spin compounds in a magnetic field
Rassili, Ahmed ULg; Ausloos, Marcel ULg

in Journal of Magnetism & Magnetic Materials (1996), 163(1-2), 153-163

We calculated the influence of a de magnetic field on the thermal conductivity of localized spin metallic systems as a function of temperature. A variational method was used. The influence of the joint ... [more ▼]

We calculated the influence of a de magnetic field on the thermal conductivity of localized spin metallic systems as a function of temperature. A variational method was used. The influence of the joint impurity and phonon scattering processes together with the localized spin influence is shown. Remarkable features are found at low temperature and near the critical transition. An increase of conductivity with field near T-C is discussed. It is also argued that a coherent effect due to the field is the cause of the thermal conductivity enhancement at low temperature. The magneto-thermal conductivity is shown at different temperatures. [less ▲]

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See detailFirst synthesis of 4-substituted benzenesulfonylcyanoguanidines
Masereel, B.; Lebrun, P.; Dogne, J.-M. et al

in Tetrahedron Letters (1996), 37

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See detailClimatology
Erpicum, Michel ULg

in Bulletin de la Société Belge d'Etudes Géographiques = Tijdschrift van de Belgische Vereniging voor Aardrijkskundige Studies (1996), 64 (2)

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See detailLes infections utérines dans l’espèce bovine: 1. Aspects étiologiques et épidémiologiques
Hanzen, Christian ULg; Houtain, J. Y.; Laurent, Y.

in Point Vétérinaire (1996), 28(numéro spécial), 1013-1017

Assessing the frequency of metritis shows the animal uterine health as well as the herd . The practitioner prefers to use vaginal examination. The great diversity and variation postpartum in germs ... [more ▼]

Assessing the frequency of metritis shows the animal uterine health as well as the herd . The practitioner prefers to use vaginal examination. The great diversity and variation postpartum in germs responsible for uterine diseases make it difficult to interpret bacteriology. Uterine diseases are all the more frequent as the interval between calving and clinical examination is shorter, therefore the practitioner screening needs to be done as soon as possible. This recommendation is valid for the primiparous dairy cow as well as the suckler cow [less ▲]

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See detailThe Creb, Atf-1, And Atf-2 Transcription Factors From Bovine Leukemia Virus-Infected B Lymphocytes Activate Viral Expression
Adam, E.; Kerkhofs, P.; Mammerickx, M. et al

in Journal of Virology (1996), 70(3),

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See detailActivation of ATP-dependant K+ channels and inhibition of insulin release: effect of BPDZ 62
Lebrun, P.; Antoine, M.-H.; Ouedraogo, R. et al

in Journal of Pharmacology and Experimental Therapeutics (The) (1996), 277

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See detailControl of chorionic obstructive pulmonary disease in the horse
Lekeux, Pierre ULg; Art, Tatiana ULg; Roberts, C.

in British Veterinary Journal (The) (1996), 152

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See detailEffects of PEEP on abdominal aortic input impedance
LAMBERMONT, Bernard ULg; DETRY, Olivier ULg; FOSSION, A et al

in Intensive Care Medicine (1996), 22

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See detailInterregional correlation of cerebral glucose metabolism in unmedicated schizophrenia
Biver, Françoise; Goldman, Serge; De Maertelaer, Viviane et al

in European Neuropsychopharmacology (1996), 6(2), 141-147

To investigate metabolic relationships between different brain regions in schizophrenia, we measured regional brain metabolism using positron emission tomography (PET) and [18F]fluorodeoxyglucose (FDG) in ... [more ▼]

To investigate metabolic relationships between different brain regions in schizophrenia, we measured regional brain metabolism using positron emission tomography (PET) and [18F]fluorodeoxyglucose (FDG) in 15 unmedicated schizophrenic patients and 15 healthy subjects. We analyzed correlations between glucose metabolism data of multiple brain regions using factorial analysis and correlation coefficient comparisons. Absolute regional intercorrelations in schizophrenic brains were found to be significantly stronger than in controls, in relationship to the greater variability of metabolic rates in schizophrenic patients. Variability of normalized metabolic rates and regional intercorrelations were not significantly different between schizophrenic patients and control subjects. We conclude that a global metabolic factor accounts for the variability of metabolic data in untreated schizophrenia. [less ▲]

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See detail"Vielen Dank und auf Wiedersehen" : Mitteilungen an das Publikum in den Kinoprogrammen der Frühzeit
Belloi, Livio ULg

in KINtop : Jahrbuch zur Erforschung des frühen Films (1996), 5

Etude des vues d'annonce au public telles que la firme Lumière en a très tôt l'intuition, mais qui se développent surtout à partir de 1906, en conjonction avec l'émergence progressive des salles fixes et ... [more ▼]

Etude des vues d'annonce au public telles que la firme Lumière en a très tôt l'intuition, mais qui se développent surtout à partir de 1906, en conjonction avec l'émergence progressive des salles fixes et spécialisées, c'est-à-dire en même temps que l'apparition de cette instance historiquement constituée qu'est le spectateur de cinéma. [less ▲]

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