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See detailDes auteurs dans les ruines. Parcours arbitraire
Delhalle, Nancy ULg

in Alternatives Théâtrales (1997)

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See detailGeografia, storia e poetiche del fantastico.
Moreno, Paola ULg

in Revue Belge de Philologie et d'Histoire (1997)

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See detailZastosowanie ultrasonografii w diagnostyce klinicznej ukladu rozrodczego u bydla
Gajewski, Z.; Hanzen, Christian ULg; Thun, R. et al

in Nowa Weterynaria (1997)

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See detailPeptides in membranes: tipping the balance of membrane stability.
Brasseur, Robert ULg; Pillot, T.; Lins, Laurence ULg et al

in Trends in biochemical sciences (1997), 22(5), 167-71

This review describes a class of peptides that associate with lipids in membranes and are commonly known as 'oblique-orientated peptides'. Owing to an asymmetric distribution of hydrophobic residues along ... [more ▼]

This review describes a class of peptides that associate with lipids in membranes and are commonly known as 'oblique-orientated peptides'. Owing to an asymmetric distribution of hydrophobic residues along the axis of the alpha-helix, such peptides can destabilize membranes or lipid cores, thereby facilitating such cellular processes as vesicular fusion or protein transport across subcellular compartments, as well as remodelling of lipid cores. [less ▲]

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See detailFrom an architectural sketch to its semantic representation
Leclercq, Pierre ULg

in International Journal of Construction Information Technology (1997), 4(2), 67-84

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See detailBovine Herpesvirus 1-Induced Apoptosis Occurs At The G0/G1 Phase Of The Cell Cycle
Hanon, Emilien ULg; Hoornaert, S.; Dequiedt, Franck ULg et al

in Virology (1997), 232(2), 351-358

We have previously shown that bovine herpesvirus 1 (BHV-1), even when inactivated, induces apoptotic cell death in mitogen-stimulated bovine peripheral blood mononuclear cells (PBMCs) (Hanon et al., 1996 ... [more ▼]

We have previously shown that bovine herpesvirus 1 (BHV-1), even when inactivated, induces apoptotic cell death in mitogen-stimulated bovine peripheral blood mononuclear cells (PBMCs) (Hanon et al., 1996, J. Virol. 70, 4116-4120). In order to gain insight into this process, we have investigated the cell cycle phase at which BHV-1 induces apoptosis in PBMCs. Our results show that the percentage of cells that progress through the S phase was always lower in BHV-1-infected PBMCs than in control cells. This effect was not due to a defective activation of mitogen-stimulated PBMCs since BHV-1 only slightly affected the percentage of cells expressing BoCD25, a well-known lymphocyte activation marker. Furthermore, mimosine and cyclosporine A, two chemicals that inhibit entry into the S phase of the cell cycle by different pathways, did not affect the ability of BHV-1 to induce apoptosis. BHV-1-induced apoptosis also occurred in unstimulated PBMCs and interestingly, this was associated with the expression of c-myc and BoCD25 proteins both of which are related to cell cycle progression. All together, these data provide evidence demonstrating that BHV-1-induced apoptosis occurs at the G0/G1 phase of the cell cycle. [less ▲]

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See detailLinear Benard-Marangoni instability in rigid circular containers
Dauby, Pierre ULg; Lebon, Georgy ULg; Bouhy, E.

in Physical Review. E : Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics (1997), 56(1), 520-530

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See detailMultipole Transitions in Nicke-like and Palladium-like Spectra
Biémont, Emile ULg

in Journal of Physics : B Atomic Molecular & Optical Physics (1997), 30

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See detailDiagenetic and paleogeographic significance of clay and other sedimentary components in the middle Devonian limestones of Western Ardennes, France
Chamley, H.; Proust, J. N.; Mansy, J. L. et al

in Palaeogeography, Palaeoclimatology, Palaeoecology (1997), 129

Givetian deposits accumulated in a more than 300-m-thick succession on a carbonate platform developed on the passive margin of the so-called Rheic ocean. These rocks crop out in the Ardenne massif at ... [more ▼]

Givetian deposits accumulated in a more than 300-m-thick succession on a carbonate platform developed on the passive margin of the so-called Rheic ocean. These rocks crop out in the Ardenne massif at Glageon in a structural context marked by small fault-controlled basins subjected to moderate overburden, tectonic and metamorphic constraints. Data on the clay mineral distribution, associated with detailed information on limestone facies/microfacies, as well as data on the depositional profile and sequence stratigraphic evolution of these rocks indicate strong carbonate diagenesis and moderate clay diagenesis, the latter being favoured by the early occurrence of the former, which prevented further fluid-rock interaction. The clay assemblage distribution, which roughly parallels the palaeomorphologic and palaeobathymetric shape of the Givetian continental margin, is organized in five successive zones indicating large-scale sequence stratigraphic evolution and the control of regional sea-level fluctuations. The clay and other sedimentary components provide additional information on the warm and variably humid climate, northern, relative to southern, terrigenous sources, the open sea relative to restricted depositional environments, the temporary tectonic rejuvenation of the continental hinterland and the chemical conditions allowing early diagenetic modifications. [less ▲]

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See detailContribution à l'étude de la flore et de l'écologie des plantes de quelques grottes wallonnes.
Garbacki, Nancy ULg

in Bulletin des Chercheurs de la Wallonie (1997), XXXVI

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See detailClostridium spiroforme toxin genes are related to C. perfringens iota toxin genes but have a different genomic localization.
Gilbert, M.; Perelle, S.; Daube, Georges ULg et al

in Systematic & Applied Microbiology (1997), 20

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See detailStability margins of nonlinear receding horizon control via inverse optimality
Magni, L.; Sepulchre, Rodolphe ULg

in Systems & Control Letters (1997), 32(4), 241-245

Using the nonlinear analog of the Fake Riccati equation developed for linear systems, we derive an inverse optimality result for several receding horizon control schemes. This inverse optimality result ... [more ▼]

Using the nonlinear analog of the Fake Riccati equation developed for linear systems, we derive an inverse optimality result for several receding horizon control schemes. This inverse optimality result unifies stability proofs and shows that receding horizon control possesses the stability margins of optimal control laws. [less ▲]

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See detailThe intensity of emotional facial expression and decoding accuracy
Hess, U; Blairy, Sylvie ULg; Kleck, R

in Journal of Nonverbal Behavior (1997), 21

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See detailA 5,6-Dihydro-Isopyoverdin From Azomonas Macrocytogenes
Michalke, R.; Taraz, K.; Budzikiewicz, H. et al

in Zeitschrift Fur Naturforschung C-A Journal of Biosciences (1997), 52(11-12),

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See detailA gas chromatographic separation for the H and C stable isotope ratio determination of coal compounds
Antenucci, Diano; Bouquegneau, Jean-Marie ULg; Brasseur, Alain et al

in Analytical Chemistry (1997), 69(11), 2030-2034

A new, completely automated gas chromatography technique has been developed to separate the different gaseous compounds produced during underground coal gasification for their C-13/C-12 and D/H isotope ... [more ▼]

A new, completely automated gas chromatography technique has been developed to separate the different gaseous compounds produced during underground coal gasification for their C-13/C-12 and D/H isotope ratio measurements, ?he technique was designed for separation and collection of Hz, CO, CO2, H2O, H2S, CH4, and heavier hydrocarbons. These gaseous compounds are perfectly separated by the gas-phase chromatograph and quantitatively sent to seven combustion and collection lines. H-2, CO, CH4, and heavier hydrocarbons are quantitatively oxidized to CO2 and/or H2O. The isotopic analyses are performed by the sealed-tube method, The zinc method is used for reduction of both water and H2S to hydrogen for D/H analysis, Including all preparation steps, the reproducibility of isotope abundance values, for a quantity higher than or equal to 0.1 mt of individual components in a mixture (5 mt of gases being initially injected in the gas chromatograph), is +/-0.1 parts per thousand for delta(13)C(PDB) and +/-6 parts per thousand for delta(13)C(PDB) and +/-6 parts per thousand for delta(SMOW). [less ▲]

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See detailEtudes phénoménologiques
Ryle, Gilbert; Leclercq, Bruno ULg

in Recherches Husserliennes (1997), 7

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See detailImproved emulsifying and foaming of whey proteins after enzymic fat hydrolysis
Blecker, Christophe ULg; Paquot, Michel ULg; Lamberti, I. et al

in Journal of Food Science (1997), 62(1), 48-

In an effort to improve emulsifying and foaming of sweet whey and whey protein concentrate, we studied the hydrolysis of the residual fat in these preparations with a sn 1,3 specific lipase. This ... [more ▼]

In an effort to improve emulsifying and foaming of sweet whey and whey protein concentrate, we studied the hydrolysis of the residual fat in these preparations with a sn 1,3 specific lipase. This enzymatic lipolysis would convert almost all triglycerides into mono- and diglycerides which have strong surface-active properties. Therefore, the emulsifying and foaming capacities of such modified whey products should be increased in comparison with native products, as shown by results presented at both neutral pH and those similar to a salad dressing emulsion. It was also demonstrated that emulsions and foams formed with lipase-treated whey preparations were more shelf-stable. [less ▲]

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See detailLes jeunes, leur activité physique et leurs perceptions de la santé, de la forme, des capacités athlétiques et de l’apparence
Ledent, Maryse; Cloes, Marc ULg; Piéron, Maurice

in Sport (1997), 159/160

La perception de sa propre compétence exerce un rôle primordial dans la décision de pratiquer une activité physique. La continuité d'une pratique résulte notamment d'un niveau de compétence jugé suffisant ... [more ▼]

La perception de sa propre compétence exerce un rôle primordial dans la décision de pratiquer une activité physique. La continuité d'une pratique résulte notamment d'un niveau de compétence jugé suffisant. A partir de 12 ans, les jeunes sont capables d'évaluer leur compétence et de faire la distinction entre cette dernière et l'effort déployé dans la performance réalisée. ... [less ▲]

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See detailChanging sensitivity to duration in human scalar timing: An experiment, a review, and some possible explanations
Ferrara, André ULg; Lejeune, Helga ULg; Wearden, J. H.

in Quarterly Journal of Experimental Psychology. B, Comparative & Physiological Psychology (1997), 50B

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See detailPratique et importance des principales activités de loisirs chez des jeunes de 12 et 15 ans dans cinq pays européens
Cloes, Marc ULg; Ledent, Maryse; Didier, Pascale et al

in Sport (1997), 159/160

On admet généralement que les loisirs sont devenus une expression du style de vie dans les pays industrialisés. Dans ce contexte, la place qu'ils occupent dans le secteur social et dans le monde ... [more ▼]

On admet généralement que les loisirs sont devenus une expression du style de vie dans les pays industrialisés. Dans ce contexte, la place qu'ils occupent dans le secteur social et dans le monde économique semble croître régulièrement. Les comparaisons interculturelles des activités de loisirs s'avèrent très difficiles en raison des différences enregistrées dans la conception des instruments utilisés dans les enquêtes et dans les intérêts des équipes de recherche. ... [less ▲]

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See detailLes attitudes de jeunes Européens à l’égard de l’école et du cours d’éducation physique
Delfosse, Catherine; Ledent, Maryse; Carreiro da Costa, Francisco et al

in Sport (1997), 159/160

L'essentiel de la vie quotidienne des jeunes scolarisés s'organise entre le temps passé à l'école et des activités dites de loisirs. Une différence fondamentale sépare les deux domaines. Le premier, par ... [more ▼]

L'essentiel de la vie quotidienne des jeunes scolarisés s'organise entre le temps passé à l'école et des activités dites de loisirs. Une différence fondamentale sépare les deux domaines. Le premier, par son caractère obligatoire, concerne tous les enfants. Le second relève davantage du niveau social, économique et culturel des parents et nécessite une organisation familiale parfois complexe. On peut affirmer que tous les enfants ne disposent pas de chances égales de s'engager dans une pratique sportive organisée ou non organisée. ... [less ▲]

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See detailDesign for an Ipriflavone Multicenter European Fracture Study
Reginster, Jean-Yves ULg; Bufalino, L.; Christiansen, C. et al

in Calcified Tissue International (1997), 61(Suppl 1), 28-32

In order to investigate the efficacy of ipriflavone (i.p.) on the prevention of vertebral fractures and the effect on bone mineral density (BMD) in women with postmenopausal osteoporosis, a large ... [more ▼]

In order to investigate the efficacy of ipriflavone (i.p.) on the prevention of vertebral fractures and the effect on bone mineral density (BMD) in women with postmenopausal osteoporosis, a large multicentric European study was designed and is presently ongoing. Included in the study were 460 Caucasian, nonobese postmenopausal women aged > 45 and < 75 years, menopaused for at least 12 months. Inclusion was on the basis of a lumbar bone mineral density (BMD) lower than 2 SD compared with healthy women aged 50 years, corresponding to values below 0.860 g/cm2 (antero-posterior measurement) by Hologic QDR 1000. Women with prevalent vertebral fractures were excluded as well as those presenting secondary osteoporosis or having been treated with medications that could affect bone metabolism. This study was designed as a 3-year, double-blind, placebo-controlled, parallel group study that randomized the women to the oral administration of either 3 x 200 mg/day of i.p. or placebo. All patients received a daily supplement of 500 mg calcium. The primary purpose of the study was to evaluate the efficacy of i.p. in preventing vertebral nontraumatic fractures. Fracture is defined here as a > or = 20% decrease in any anterior, central, or posterior T4-L4 vertebral height. Blinded vertebral X-ray readings and vertebral morphometry have been centralized in an independent Center, with standardized evaluation of two experts. Power calculations have been based on the hypothesis that 21% of placebo-treated patients would fracture within 3 years and that treatment with i.p. would lead to a 50% reduction in the incidence of fracture. Statistical tests have been designed to have a power of 80%, with a type I error equal to 5%. Secondary endpoints were changes in vertebral, radial, and femoral BMD. Centralized controls on 100% BMD scans would ensure the good quality of BMD readings. This study should verify the hypothesis that i.p. significantly decreases the risk of vertebral fracture in postmenopausal, osteoporotic women. [less ▲]

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See detailParticipation des jeunes Européens aux activités physiques et sportives
Ledent, Maryse; Cloes, Marc ULg; Telama, Risto et al

in Sport (1997), 159/160

Le rôle primordial que jouent les activités physiques et sportives en matière de prévention de plusieurs maladies parfois fatales survenant à l'âge adulte constitue un argument essentiel en faveur d'une ... [more ▼]

Le rôle primordial que jouent les activités physiques et sportives en matière de prévention de plusieurs maladies parfois fatales survenant à l'âge adulte constitue un argument essentiel en faveur d'une pratique régulière de l'effort physique. Ses effets sur la santé, ou plus précisément sur les facteurs de risque chez les adultes, ont suscité l'éveil d'un nombre croissant de chercheurs. ... [less ▲]

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See detailSynthesis and characterization of porous silica-alumina xerogels
VanCantfort, Olivier; Abid, A.; Michaux, Bernard et al

in Journal of Sol-Gel Science and Technology (1997), 8

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See detailMonotonous stability for neutral fixed points
Bair, Jacques ULg; Haesbroeck, Gentiane ULg

in Bulletin of the Belgian Mathematical Society Simon Stevin (1997), 4(5), 639-646

We give subtle, simple and precise results about the convergence or the divergence of the sequence (x(n)), where x(j) = f(x(j-1)) for every integer j, when the initial element x(0) is in the neighbourhood ... [more ▼]

We give subtle, simple and precise results about the convergence or the divergence of the sequence (x(n)), where x(j) = f(x(j-1)) for every integer j, when the initial element x(0) is in the neighbourhood of a neutral fixed point, i.e. a point x* such that f(x*) = x* with \f'(x*)\ = 1 (where f is a C-infinity function defined on a subset of R). [less ▲]

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See detailComplications hepatiques de la chimiotherapie. De la cytolyse banale a la maladie veino-occlusive du foie.
Baron, Frédéric ULg; Beguin, Yves ULg

in Revue Médicale de Liège (1997), 52(2), 93-7

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See detailBicuculline methiodide potentiates NMDA-dependent burst firing in rat dopamine neurons by blocking apamin-sensitive Ca2+-activated K+ currents.
Johnson, S. W.; Seutin, Vincent ULg

in Neuroscience Letters (1997), 231(1), 13-6

Apamin, a bee venom toxin which blocks a Ca2+-dependent K+ current, potentiates N-methyl-D-aspartate (NMDA)-induced burst firing in dopamine neurons. We now report that burst firing is also potentiated by ... [more ▼]

Apamin, a bee venom toxin which blocks a Ca2+-dependent K+ current, potentiates N-methyl-D-aspartate (NMDA)-induced burst firing in dopamine neurons. We now report that burst firing is also potentiated by an apamin-like effect of bicuculline methiodide (BMI) at the same concentration (30 microM) which blocks GABA(A) receptors in vitro. Using microelectrodes to record intracellularly from rat dopamine neurons in the midbrain slice, BMI reduced the apamin-sensitive afterhyperpolarization in all cells tested. BMI also mimicked apamin (100 nM) by potentiating burst firing produced by a concentration of NMDA (10 microM) which is too low to evoke burst firing when perfused alone. When recording under voltage-clamp, both BMI and apamin reduced a depolarization-activated outward current which was also sensitive to perfusate containing no-added Ca2+. Although picrotoxin (100 microM) and bicuculline free base (30 microM) blocked the inhibition of firing produced by the GABA(A) agonist isoguvacine (100 microM), neither had apamin-like effects. We conclude that BMI potentiates burst firing by blocking an apamin-sensitive Ca2+-activated K+ current. [less ▲]

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See detailNotes of the flea fauna (Insecta, Siphonaptera) of the terrestrial azorean mammals
Libois, Roland ULg; Fons, Roger; Mathias, Maria da Luz et al

in Arquivos do Museu Bocage. Nova série (1997), 3(1), 1-11

During three successive years, field samplings of wild mammals were organised on different Azorean islands and the ectoparastes were collected. Among 340 murid rodents, 31 did bear at least one flea ... [more ▼]

During three successive years, field samplings of wild mammals were organised on different Azorean islands and the ectoparastes were collected. Among 340 murid rodents, 31 did bear at least one flea. Nosopsyllus l. londiniensis has been found on the mouse in São Miguel. Stenoponia t. tripectinata has been discovered in Terceira and in São Miguel, mainly on house mice and on one black rat out of 121. Nosopsyllus fasciatus was present on the mouse and on both the black and the Norway rats. Its presence has been evidenced in four islands: São Miguel, Terceira, Graciosa and Flores. Numerous rabbits were also examined in the visited islands (São Miguel, Terceira, Pico, São Jorge, Faial and Flores) and were found heavily parasited by their commonest flea, Spilopsyllus cuniculi. In Flores, however, that flea seems to be lacking. Though no systematic search has been done on domestic animals, the presence of Ctenocephalides f. felis is also reported from Flores, Terceira and Graciosa whereas C. canis has been found on a dog in Florès. The flea fauna of the Azorean archipelago is therefore characterized by a few species amongst the most cosmopolitan ones [less ▲]

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See detailUsefulness of 18fdg Positron Emission Tomography in Detection and Follow-up of Digestive Cancers
Paulus, P.; Hustinx, Roland ULg; Daenen, Frédéric ULg et al

in Acta Gastro-Enterologica Belgica (1997), 60(4, Oct-Dec), 278-80

PET is a diagnostic method that creates high resolution, 3 dimensional tomographic images of the distribution of positron emitting radionuclides in the human body. Recent technological developments allow ... [more ▼]

PET is a diagnostic method that creates high resolution, 3 dimensional tomographic images of the distribution of positron emitting radionuclides in the human body. Recent technological developments allow the use of whole-body PET devices in clinical oncology. 18FDG is a glucose analog transported and competitively used with glucose reflecting the increased glucose metabolism into malignant cells. Differential diagnosis between chronic pancreatitis and pancreatic cancer is already a well-documented indication. For initial staging of gastro-esophageal and colorectal tumours, results are preliminary but the clinical impact seems to be rather limited. At present, the major indication of FDG-PET is the detection and staging of colorectal cancer recurrences. FDG-PET allows the differentiation between scared tissue and tumour when structural imaging is often confusing. In the same time, the whole-body imaging capability provides unique information that can modify loco-regional and liver staging. Overall, FDG-PET affects the clinical management of 30 to 40% of these patients. Quantitative assessment of therapeutic response to chemotherapy regimen appears to be one of the most promising applications of FDG-PET. Since the most effective therapy of colorectal cancer are often surgical, the role of chemotherapy in colorectal cancer remains limited to adjuvant therapy and in advanced disease. However, FDG-PET could be of great value in assessing the response of oesophageal carcinomas to chemo-radio therapy, before surgery. In our experience, FDG-PET appears to be the first line diagnostic method in the detection and staging of colorectal recurrence and differential diagnosis of pancreatic tumour versus chronic pancreatitis. [less ▲]

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See detailL’arsénopyrite du Massif de Stavelot, Belgique
Hatert, Frédéric ULg

in Bulletin de la Société Royale des Sciences de Liège (1997), 66

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See detailLattice dynamics and ferroelectric instability of barium titanate
Ghosez, Philippe ULg; Gonze, X.; Michenaud, J. P.

in Ferroelectrics (1997), 194

Using first-principles calculations, we investigate the lattice dynamics of cubic and rhombohedral BaTiO3 and rye discuss the origin of the structural instability of this ferroelectric material. First, we ... [more ▼]

Using first-principles calculations, we investigate the lattice dynamics of cubic and rhombohedral BaTiO3 and rye discuss the origin of the structural instability of this ferroelectric material. First, we report results on the Born effective charges and the dielectric tensor and we emphasize the important reduction of these quantities in the ferroelectric phase, Then, the phonon frequencies at the Gamma point are calculated. We point out the similarity of theoretical eigenvectors in the cubic and rhombohedral phases. We examine the interaction of the vibration modes with the electric field and in particular the giant LO-TO splitting of the ferroelectric mode. Finally, separating the dipole-dipole interaction from the remaining short-range forces, we quantify the balance of forces leading to an unstable phonon in the cubic phase and we demonstrate its sensitivity to tiny effective charge changes. Within our decomposition, the stabilization of the unstable mode in the rhombohedral phase is produced by a reduction of the Born effective charges, while its stabilization under isotropic pressure is associated with a modification of the short-range forces. [less ▲]

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See detailCompte rendu de l'ouvrage de Th. Bardinet, Les papyrus médicaux de l'Egypte pharaonique, Paris, 1995
Marganne, Marie-Hélène ULg

in Archives Internationales d'Histoire des Sciences (1997), 47(139 bis), 139-141

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See detailPresence of pap-, sfa- and afa-related sequences in necrotoxigenic Escherichia coli isolates from cattle : evidence for new variants of the AFA family
Mainil, Jacques ULg; Jacquemin, E.; Hérault, F. et al

in Canadian Journal of Veterinary Research = Revue Canadienne de Recherche Vétérinaire (1997), 61

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See detailScintigraphic visualization of intrathecal liposome biodistribution.
Umbrain, V; D'Haese, J; Alafandy, M et al

in Acta Anaesthesiologica Scandinavica (1997), 41(1 Pt 1), 25-34

BACKGROUND: Liposomes containing local anaesthetics have been administered intrathecally and in the epidural space. Poor attention has been given to the pharmacokinetics of liposomes as drug carriers ... [more ▼]

BACKGROUND: Liposomes containing local anaesthetics have been administered intrathecally and in the epidural space. Poor attention has been given to the pharmacokinetics of liposomes as drug carriers. Therefore, we observed the biodistribution of liposomes after intrathecal injection in rats by scintigraphic imaging during 24 h. METHODS: We administered 99mTc-labeled multilamellar (MLV) and small unilamellar vesicles (SUV) of defined size and volume dispersities into the cerebrospinal fluid at the lumbar level. Those vesicles were free of contamination by radiolabeled colloids as visualized by light and electron microscopy and of neurotoxic products from phosphatidylcholine hydrolysis and peroxidation, both during the preparation process and after 24 h incubation in cerebrospinal fluid at 37 degrees C in vitro. RESULTS: SUV immediately diffused from the lumbar site of injection to the head and were cleared between 1 and 24 h after injection. MLV were cleared more slowly from the spinal space and appeared in the head region 1 h after injection where they accumulated up to 24 h. These differences were explained in terms of vesicle sizes and volumes. SUV with 0.05 micron diameters were rapidly absorbed into the blood through the arachnoid granulations. In contrast, particles larger than the upper size limit of the arachnoid granulations permeability (+/- 8 microns) could accumulate in the head with a slow elimination rate. CONCLUSION: This difference in clearance from the intrathecal space outlines the importance of defining the size of the liposomes, the distribution of a tracer or a drug inside the liposomal preparation, the chemical stability and the absence of toxic degradation products of liposome formulations before clinical use. [less ▲]

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See detailLa localisation des productions agricoles : introduction méthodologique.
Merenne-Schoumaker, Bernadette ULg

in Bulletin de la Société Géographique de Liège (1997), (33), 129-138

First of all, the article specifies the links between agriculture and geography by emphasising both the speculiarities of the agricultural sector and the evolution of the problems concerning the ... [more ▼]

First of all, the article specifies the links between agriculture and geography by emphasising both the speculiarities of the agricultural sector and the evolution of the problems concerning the geographical researches dealing with the agricultural sector. Then, it defines the two main investigation areas of the agricultural geography : the analysis of the production distribution / sharing-out and the researches upon the factors and models of localisation. The two cases show how the authors endeavour to get devices that provide them a better understanding of the ever increasing complexity of the agricultural world. [less ▲]

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See detailLe rôle de l'officier de l'état civil requis de célébrer un mariage présumé simulé
Paris, Catherine ULg

in Revue Trimestrielle de Droit Familial (1997)

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See detailEvidence for enhanced inflammatory cell activity, ICAM-1 expression and eosinophil chemotactic activity in the sputum of asthmatics.
Louis, Renaud ULg; Shute, J.; Biaggi, S. et al

in American Journal of Respiratory & Critical Care Medicine (1997), 155(2), 466-472

We have applied the technique of sputum induction by hypertonic saline in asthmatics and nonatopic control subjects to study an array of indices of airway inflammation believed to be relevant to asthma ... [more ▼]

We have applied the technique of sputum induction by hypertonic saline in asthmatics and nonatopic control subjects to study an array of indices of airway inflammation believed to be relevant to asthma pathogenesis. Compatible with a central role for eosinophils and mast cells in asthma, sputum of asthmatic subjects contained increased numbers of eosinophils and levels of eosinophil cationic protein (ECP) and mast cell tryptase. Eosinophil numbers, and ECP and histamine levels correlated with the degree of methacholine airways responsiveness, and ECP, tryptase, and histamine correlated with raised concentrations of albumin. Using the micro-Boyden chamber technique eosinophil chemotactic activity was identified only in the sputum from asthmatics. The correlation between the raised levels of total IgA, IL- 8/IgA complexes, and tryptase and the degree of sputum eosinophilia and ECP levels, suggests possible mechanisms for eosinophil chemotaxis and activation in asthma. Row cytometric analysis of sputum lymphocytes showed an increase in CD4+ T cells and T cells expressing intercellular adhesion molecule-1 (ICAM-1) in asthma which, together with the finding of raised levels of soluble ICAM-1 in the sputum, indicates upregulation of this adhesion molecule. Finally, the proportion of CD16+ natural killer (NK) cells was reduced in the sputum of asthmatics. These observations highlight the importance of the airway inflammation in causing asthma and further confirm the usefulness of sputum induction as a tool in asthma research. [less ▲]

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See detailVers une chirurgie mammaire supraconservatrice des lésions mammaires infracliniques?
LIFRANGE, Eric ULg; COLIN, Claude

in Gunaïkeia (1997), 2

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See detailRadiotherapie externe focalisee apres resection de metastase cerebrale unique: etude prospective de phase I-II
Zouhair; COUCKE, Philippe ULg; Douglas, Pelham et al

in Bulletin du Cancer. Radiothérapie : Journal de la Société Française du Cancer : Organe de la Société Française de Radiothérapie Oncologique (1997), 1

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See detailUtilisation de l'habitat par la sérotine commune Eptesicus serotinus en Lorraine belge
Kervyn, Thierry; Brasseur, Jasmine; Libois, Roland ULg

in Bulletin de la Société Neuchâteloise des Sciences Naturelles (1997), 120(2), 35-41

The radiotracking of 10 serotine bats during a period of 73 nights shows that the animals hunt mainly at forest edges and above meadows. The mean distance between the main diurnal roost and hunting ... [more ▼]

The radiotracking of 10 serotine bats during a period of 73 nights shows that the animals hunt mainly at forest edges and above meadows. The mean distance between the main diurnal roost and hunting grounds is 2.1 +/- 1.2 km (n = 24). Secondary diurnal roosts are used within a radius of 250 m of the main diurnal quarters. Nocturnal resting places are situated in beech forests (Fagus sylvatica) near feeding areas. The activity area (minumum area method) of radiotracked serotine bats, all originating from the same colony, stretches to 15.8 km². [less ▲]

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See detailMeedogenloze schoonheid. De laatste gedichten van Paul van Ostaijen en Hans Faverey
Spinoy, Erik ULg

in Spiegel der Letteren (1997), 39(2), 183-203

This article reads two poems by Paul van Ostaijen and Hans Faverey, and goes on to demonstrate that both can be considered to be the fruit of an aesthetics of the sublime.

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See detailImprovement Of Lipase Production From Yarrowia Lipolytica
Destain, Jacqueline ULg; Weber, D.; Thonart, Philippe ULg

in Biotechnology Letters (1997), 19(2),

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See detailTechnique for long-term catheterization of large abdominal vessels in growing cattle.
Hornick, Jean-Luc ULg; Istasse, Louis ULg

in Contemporary Topics in Laboratory Animal Science (1997), 36(2), 66-8

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See detailPostoperative spirometry after laparoscopy for lower abdominal or upper abdominal surgical procedures.
Joris, Jean ULg; Kaba, Abdourahmane ULg; Lamy, Maurice ULg

in British Journal of Anaesthesia (1997), 79(4), 422-6

In this prospective study, we have compared women undergoing laparoscopic cholecystectomy, laparoscopic gynaecological surgery and laparoscopic minor gynaecological procedures (diagnostic, tubal, ligation ... [more ▼]

In this prospective study, we have compared women undergoing laparoscopic cholecystectomy, laparoscopic gynaecological surgery and laparoscopic minor gynaecological procedures (diagnostic, tubal, ligation) (n = 10 in each group) to determine if lower abdominal laparoscopy results in less postoperative pulmonary dysfunction than upper abdominal laparoscopy. Pulmonary testing was performed before operation, and 3 and 6 h after operation, on the first and second days after surgery. After operation, a significant reduction in forced vital capacity, forced expiratory volume in 1 s and peak expiratory flow rate occurred after laparoscopic cholecystectomy at each time. There were no significant changes after minor gynaecologic laparoscopy, whereas laparoscopic gynaecological surgery resulted in minor pulmonary dysfunction on the day of surgery only. We conclude that postoperative pulmonary function was less impaired after gynaecological laparoscopy than after laparoscopic cholecystectomy. This study suggests that the site of surgery is an important determinant of lung dysfunction after laparoscopy. [less ▲]

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See detailBilinguisme, traduction et histoire des textes dans l'Orient grec (Ier - IVe s. après J.-C.)
Rochette, Bruno ULg

in Revue d'Histoire des Textes (1997), 27

Vise à montrer l'intérêt que présentent les textes traduits pour l'étude de la transmission de l'original. Trois exemples de traductions du latin en grec, réalisées dans la Pars Orientis entre le Ier et ... [more ▼]

Vise à montrer l'intérêt que présentent les textes traduits pour l'étude de la transmission de l'original. Trois exemples de traductions du latin en grec, réalisées dans la Pars Orientis entre le Ier et le IVe s., sont étudiés : les Res gestae diui Augusti, les listes de mots compilées à partir de Virgile et de Cicéron sur papyrus, la uersio Graeca de la quatrième Bucolique de Virgile appartenant à l'Oratio ad Sanctorum coetum de Constantin le Grand. L'apport de ces traductions se situe sur deux plans. D'abord, constituant une tradition en soi, les traductions grecques d'œuvres latines permettent de connaître l'état du texte au moment de sa traduction et peuvent donc jouer un rôle dans l'ecdotique. Ensuite, ces traductions apportent une contribution à l'histoire de la littérature et des mentalités. La traduction d'un texte se situe dans un contexte culturel différent de celui dans lequel a été élaboré l'original. Loin de se contenter de traduire ad uerbum, le traducteur fait passer dans la version traduite des conceptions nouvelles, politiques, sociales ou religieuses. Ainsi, par exemple, le passage d'un régime politique à un autre (République-Empire) ou d'une conception religieuse à une autre (paganisme-christianisme) peut modifier radicalement la perspective du traducteur. [less ▲]

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See detailLesions observed on stranded seabirds along the Belgian coast from 1992 to 1995
Jauniaux, Thierry ULg; Brosens, L.; Coignoul, Freddy ULg

in ICES Journal of Marine Science (1997), 54(4), 714-717

From 1992 to 1995, dead seabirds found on Belgian beaches were collected and various tissues of 241 birds were sampled for histopathological, bacteriological, parasitological, and toxicological ... [more ▼]

From 1992 to 1995, dead seabirds found on Belgian beaches were collected and various tissues of 241 birds were sampled for histopathological, bacteriological, parasitological, and toxicological investigations. The most common species examined was the guillemot (Uria aalge). Necropsies revealed cachexia (severe emaciation), acute haemorrhagic gastro-enteropathy and oil contamination in many of these birds. Statistical analyses were performed in order to explore correlations of these with biological parameters such as age, sex, and origin (pelagic or non-pelagic). The pelagic origin of seabirds were associated with the three main findings. Oil contamination was associated with acute gastro-enteropathy and cachexia, and cachexia was more prevalent among juveniles. Finally, cachexia and acute gastro-enteropathy were strongly associated. It is possible that oiled pelagic seabirds become cachectic and die of acute gastro-enteropathy. (C) 1997 International Council for the Exploration of the Sea. [less ▲]

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See detailSpinal ischaemia after surgery for abdominal infrarenal aortic aneurysm. Diagnosis with nuclear magnetic resonance.
Defraigne, Jean-Olivier ULg; OTTO, Bernard ULg; SakalihasanN, Natzi ULg et al

in Acta Chirurgica Belgica (1997), 97(5), 250-6

A 76-year-old man underwent surgery for an infrarenal aortic aneurysm reaching 6 cm in maximal transverse diameter. The aorta was crossclamped below the level of the renal arteries. A tube graft was ... [more ▼]

A 76-year-old man underwent surgery for an infrarenal aortic aneurysm reaching 6 cm in maximal transverse diameter. The aorta was crossclamped below the level of the renal arteries. A tube graft was interposed and tend between the infrarenal aorta and the aortic bifurcation. Due to leakage on the suture line two consecutive episodes of crossclamping for a total duration of 40 min. were required. No hypotension was noted during or after the procedure. After operation, the patient complained of difficulties to move both legs and neurologic examination demonstrated paraparesis, with mild sensory deficit. Faecal and urinary incontinences were also noted and urodynamic testing demonstrated sphincterovesical palsy. Nuclear magnetic resonance imaging detected an ischaemic zone in the spinal cord at the level of T11. Faecal incontinence and motor deficit partially resolved but no bladder function recovery was observed. Spinal ischaemia is a rare complication after abdominal aortic surgery. Several risk factors have been suggested which include level and duration of the aortic crossclamping, possible interruption of the spinal cord blood supply via the greater medullary artery (the so-called artery of Adamkiewicz), presence of intra- or postoperative episodes of hypotension, atheromatous embolization, underlying occlusive arteriosclerosis of spinal arteries, and respect or not of the hypogastric circulation. In our case, the duration of the crossclamping and interruption of the blood flow in lumbar arteries probably supplying the distal spinal cord were likely contributive factors. [less ▲]

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See detailGenetic Diversity In Lima Bean (Phaseolus Lunatus L) As Revealed By Rapd Markers
Fofana, B.; Vekemans, X.; Du Jardin, Patrick ULg et al

in Euphytica (1997), 95(2),

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See detailAntisense galectin-3 alters thymidine incorporation in human MDA-MB435 breast cancer cells
van den Brûle, Frédéric; Bellahcene, Akeila ULg; Jackers, Pascale ULg et al

in International Journal of Oncology (1997), 11(2), 261-264

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See detailHooliganisme: la délinquance des stades de football
Comeron, Manuel ULg

in Déviance et Société (1997), 21(1), 97-113

Analyse de la violence des supporters: individuelle, groupale, foule et sociétale.

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See detailThe role of bisphosphonates in the treatment of osteoporosis
Reginster, Jean-Yves ULg; Halkin, V.; Gosset, Christiane ULg et al

in Drugs of Today (Barcelona, Spain : 1998) (1997), 33

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See detailLe concept de qualité de vie
Etienne, Anne-Marie ULg; Fontaine, Ovide ULg

in Revue Francophone de Clinique Comportementale et Cognitive (1997), II(3), 16-25

Les auteurs examinent les problèmes rencontrés pour définir et mesurer la qualité de vie. Il se dégage des multiples définitions un ensemble de propriétés et de caractéristiques telles que la ... [more ▼]

Les auteurs examinent les problèmes rencontrés pour définir et mesurer la qualité de vie. Il se dégage des multiples définitions un ensemble de propriétés et de caractéristiques telles que la multifactorialité, l'auto-évaluation, la variabilité temporelle et la subjectivité. De plus, l'étude comparative des multiples outils existants devrait permettre d'affiner leur spécificité et donc aider à la compréhension du concept... [less ▲]

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See detailThe Spectrum of Ne V
Bastin, Thierry ULg; Biémont, Emile ULg; Dumont, Paul-Dominique ULg et al

in Physica Scripta (1997), 55

A new investigation of the Ne V spectrum is reported. The beam-foil method has been used to produce spectra at two different energies (1.2 MeV and 2.5 MeV) between 450 and 11OOA Sixty-five lines of Ne V ... [more ▼]

A new investigation of the Ne V spectrum is reported. The beam-foil method has been used to produce spectra at two different energies (1.2 MeV and 2.5 MeV) between 450 and 11OOA Sixty-five lines of Ne V have been newly identified. Fifty levels have been determined for the first time and energies have been revised for seven levels. [less ▲]

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See detailSur les accents et les marques de quantité dans les papyrus latins
Rochette, Bruno ULg

in Zeitschrift für Papyrologie und Epigraphik (1997), 119

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See detailIncorporation of rapeseed meal extracted by pressure in a diet for growing fattening bulls .1. Intake, digestibility and fermentation in the rumen
Mayombo, A. P.; Baldwin, Paule ULg; Wathelet, Jean-Paul ULg et al

in Annales de Zootechnie (1997), 46(1), 57-70

Intake, digestibility, degradation kinetic and fermentation were studied with bulls offered fattening diets with four different incorporation rates of rapeseed meal obtained by pressure; the ether extract ... [more ▼]

Intake, digestibility, degradation kinetic and fermentation were studied with bulls offered fattening diets with four different incorporation rates of rapeseed meal obtained by pressure; the ether extract content was 8.6% and the glucosinolate content 17,6 mu molg. The control diet was made of sugar beet pulp, cereals, soya bean meal and linseed meal. In the three other diets, nitrogen from rapeseed meal provided 33, 66 or 100% of nitrogen from soya bean meal or linseed meal. The intakes of the control diet were 94.3 +/- 7.3 g/kg metabolic body weight. Intakes were maintained high in the diet with 33, 66 or 100% of protein from rapeseed meal at 93.5 +/- 7.7; 93.0 +/- 5.0 and 93.5 +/- 7.7 g/kg, respectively. The apparent digestibility of rapeseed meal in the ration containing only rapeseed meal was high at 74.9 +/- 1.9% for dry matter, 76.5 +/- 2.1% for organic matter, 69.9 +/- 3.9% for nitrogen, 59.1 +/- 4.8% for ADF and 74.6 +/- 6.9% for ether extract. Dry matter of rapeseed meal was less degradable (57.8 +/- 5.0%) than that of soya bean meal (65.5 +/- 2.6%) or of linseed meal (61.6 +/- 4.2%) but was not as well protected than that of protected soya bean meal (43.6 +/- 2.6%) (P < 0.001). Similar trends were observed for the degradability of nitrogen (P < 0.001). Ether extract of rapeseed meal was more degradable than that of linseed meal (P < 0.001). There were no significant effects of the incorporation rate of rapeseed meal on the pH in the rumen. The fermentations were mainly of the acetate type with usual concentrations of propionate, butyrate, total volatile fatty acids, glucose or alpha amino nitrogen. Ammonia concentration was higher with the control diet and lower with the diet with 100% of protein from rapeseed meal. Fatty acids of rapeseed meal were more protected against saturation by the rumen microorganisms than in linseed meal. [less ▲]

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See detailLa bryoflore d'une forêt alluviale fonctionnelle: la réserve naturelle rhénane de l'Ile de Rhinau (Bas-Rhin, France)
Klein, J. P.; Siebel, H.; Vanderpoorten, Alain ULg

in Mitteilungen des Badischen Landesvereins für Naturkunde und Naturschutz (1997), 16

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See detailSurveillance of foodborne illnesses in Belgium.
Daube, Georges ULg; Van Look, F.

in Archives of Public Health (1997), 55

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See detailImplication of collagen type I-induced membrane-type 1-matrix metalloproteinase expression and matrix metalloproteinase-2 activation in the metastatic progression of breast carcinoma.
Gilles, Christine ULg; Polette, M.; Seiki, M. et al

in Laboratory Investigation : Journal of Technical Methods & Pathology (1997), 76(5), 651-60

We have previously demonstrated that fibroblasts and invasive human breast carcinoma (HBC) cells specifically activate matrix metalloproteinase-2 (MMP-2) when cultured on 3-dimensional gels of type I ... [more ▼]

We have previously demonstrated that fibroblasts and invasive human breast carcinoma (HBC) cells specifically activate matrix metalloproteinase-2 (MMP-2) when cultured on 3-dimensional gels of type I collagen but not a range of other substrates. We show here the constitutive expression of membrane-type 1 (MT1)-MMP in both fibroblasts, and invasive HBC cell lines, that have fibroblastic attributes presumably acquired through an epithelial-to-mesenchymal transition (EMT). Treatment with collagen type I increased the steady-state MT1-MMP mRNA levels in these cells but did not induce either MT1-MMP expression or MMP-2 activation in noninvasive breast carcinoma cell lines, which retain epithelial features. Basal MT3-MMP mRNA expression had a pattern similar to that of MT1-MMP but was not up-regulated by collagen. MT4-MMP mRNA was seen in both invasive and noninvasive HBC cell lines and was also not collagen-regulated, and MT2-MMP mRNA was not detected in any of the HBC cell lines tested. These data support a role for MT1-MMP in the collagen-induced MMP-2-activation seen in these cells. In situ hybridization analysis of archival breast cancer specimens revealed a close parallel in expression of both collagen type I and MT1-MMP mRNA in peritumoral fibroblasts, which was correlated with aggressiveness of the lesion. Relatively high levels of expression of both mRNA species were seen in fibroblasts close to invasive tumor nests and, although only focally, in certain areas close to preinvasive tumors. These foci may represent hot spots for local degradation and invasive progression. Collectively, these results implicate MT1-MMP in collagen-stimulated MMP-2 activation and suggest that this mechanism may be employed in vivo by both tumor-associated fibroblasts and EMT-derived carcinoma cells to facilitate increased invasion and/or metastasis. [less ▲]

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See detailA propos de quelques utilisations non conventionnelles de la metformine
SCHEEN, André ULg; PAQUOT, Nicolas ULg; LETIEXHE, Michel ULg et al

in Médecine et Hygiène (1997), 55

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See detailPhylogenetic classification of the mitochondrial carrier family of Saccharomyces cerevisiae.
Elmoualij, Benaïssa ULg; Duyckaerts, Claire ULg; Brasseur, Josette ULg et al

in Yeast (Chichester, England) (1997), 13(6), 573-581

The screening of the open reading frames identified in the whole yeast genome has allowed us to discover 34 proteins belonging to the mitochondrial carrier family. By phylogenetic study, they can be ... [more ▼]

The screening of the open reading frames identified in the whole yeast genome has allowed us to discover 34 proteins belonging to the mitochondrial carrier family. By phylogenetic study, they can be divided into 27 subfamilies including ADP/ATP, phosphate and citrate carriers, putative oxoglutarate and GDC carriers and 22 new subfamilies. Topology predictions using the 'positive inside rule' approach have shown that the yeast carriers are similarly oriented with both extremities exposed to the cytosol. In each subfamily, a strict conservation of the charged residues in the six transmembrane alpha-helices is observed, suggesting a functional role for these residues and the existence of 27 functionally distinct carriers. [less ▲]

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See detailCompte rendu de L.I. Conrad - M. Neve - V. Nutton - R. Porter - A. Wear, The Western Medical Tradition: 800 BC to AD 1800, Cambridge, 1995
Marganne, Marie-Hélène ULg

in Archives Internationales d'Histoire des Sciences (1997), 47(139 bis), 153-154

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See detailProgramme EsQUIsE. Acquisition et interprétation de croquis d'architecture
Leclercq, Pierre ULg

in La lettre de l'IA (1997), 123

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See detailTechnical validation of a face mask adapted for dry powder inhalation in the equine species
Duvivier, Dominique Hannia; Votion, Dominique ULg; Vandenput, Sandrina ULg et al

in Equine Veterinary Journal (1997), 29(6), 471-476

Development of dry powder inhalation (DPI) for horses requires the use of an adapted face mask. In experiment I, 4 masks (A, B, C and D) were tested and factors influencing the delivery of the dry powder ... [more ▼]

Development of dry powder inhalation (DPI) for horses requires the use of an adapted face mask. In experiment I, 4 masks (A, B, C and D) were tested and factors influencing the delivery of the dry powder were determined. Mask A was one which is commercially available for metered-dose inhalation. Mask B had the same shape as Mask A but an airtight rubber seal was added for the connection between the mask and horse's head. Mask C was a prototype adapted for DPI with connection for the DPI device between the nostrils, airtight expiratory valves in front of each nostril and airtight rubber seal to attach the mask on the horse's head. Mask D was the same as Mask C but the airtight expiratory valve was situated in front of one nostril and the connection for the DPI device was placed in front of the other nostril. Inhalet emptying and peak inspiratory pressure were measured on 5 healthy horses with each face mask. Both Masks A and B gave a low rate of inhalet emptying. Inspiratory pressures created in Masks C and D were negative enough to ensure inhalet emptying rates of mean +/- s.d. 98.28 +/- 1.79% and 100% respectively. In experiment 2, the face masks giving the greatest inhalet emptying were used to test the therapeutic efficacy of ipratropium bromide DPI. This was tested on 6 horses suffering from acute exacerbation of chronic obstructive pulmonary disease (COPD). At a dose of 200 micrograms/100 kg bwt, ipratropium administered with Mask D improved significantly pulmonary function measurements compared to baseline values and placebo inhalation. With Mask C, a double dose of ipratropium (400 micrograms/100 kg bwt) was necessary to improve these parameters compared to baseline values. This indicated the importance of locating the DPI device in front of one nostril. It was concluded that inhalet emptying is correlated to inspiratory pressures measured in the face masks. Secondly, these pressures are in turn dependent on the air-tightness of the mask, i.e. air-tightness of the expiratory valve and close connection between the horse's head and the mask. Thirdly, position of the DPI device in front of a nostril allows bronchodilation at a dose half that required when the device is placed between the nostrils. Finally DPI using Mask D (EquiPoudre) is a rapid, effective and well tolerated inhalation treatment for COPD horses. [less ▲]

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See detailSequence Analysis of the Bovine Herpesvirus Type 1 Genes Homologous to the DNA Polymerase (Ul30), the Major DNA-Binding Protein (Ul29) and Icp18.5 Assembly Protein (Ul28) Genes of Herpes Simplex Virus
Meyer, Gilles; Vlcek, C.; Paces, V. et al

in Archives of Virology (1997), 142(1), 89-102

The nucleotide sequence of a 10.5 kb region (map position 0.332 to 0.410) of bovine herpesvirus type 1 (BHV-1) was determined. This region contained three open reading frames (ORFs) homologous to herpes ... [more ▼]

The nucleotide sequence of a 10.5 kb region (map position 0.332 to 0.410) of bovine herpesvirus type 1 (BHV-1) was determined. This region contained three open reading frames (ORFs) homologous to herpes simplex virus DNA polymerase catalytic subunit (DNApol, UL30), major DNA-binding protein (MDBP, UL29) and ICP18.5 assembly protein (ICP18.5, UL28). The BHV-1 DNApol. MDBP and ICP18.5 ORFs were 1246, 1203 and 826 amino acids long with a calculated molecular mass of 134.2 kDa, 124.4 kDa and 86.9 kDa, respectively. They showed a high homology with alphaherpesvirus homologs despite large differences in the G + C content of the UL30-UL28 segment ranging from 44.4% for varicella zoster virus to 71.5% for BHV-1. Particularly well conserved among Alphaherpesvirinae are the putative functional domains of the DNApol and MDBP proteins which are discussed. Phylogenetic analysis revealed that BHV-1 clustered in the Varicellovirus genus with the animal D-type viruses. In this group, the BHV-1 position was shown to vary according to the investigated genes. Indeed, pseudorabies virus clustered with BHV-1 in the DNApol tree but with equine herpesvirus 1 in the ICP18.5 tree. [less ▲]

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See detail«Sui manoscritti veneziani del Foucon de Candie»
Moreno, Paola ULg

in Bulletin Bibliographique de la Société Rencesvals (1997)

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See detailOzone-Induced Stimulation of Pulmonary Sympathetic Fibers: A Protective Mechanism against Edema
Delaunois, Annie ULg; Segura, P.; Dessy, Cécile ULg et al

in Toxicology and Applied Pharmacology (1997), 147(1), 71-82

Tropospheric ozone exerts well-described toxic effects on the respiratory tract. Less documented, by contrast, is the ability of ozone to induce protective mechanisms against agents that are toxic to the ... [more ▼]

Tropospheric ozone exerts well-described toxic effects on the respiratory tract. Less documented, by contrast, is the ability of ozone to induce protective mechanisms against agents that are toxic to the lungs. In particular, interactions between ozone and the sympathetic nervous system have never been considered. Using a model of permeability edema in isolated perfused rabbit lungs, we report here that, immediately after exposure of rabbits to 0.4 ppm ozone for 4 hr, the pulmonary microvascular responses to acetylcholine and substance P are completely blocked. Several lines of evidence, including partial inhibition of the ozone-induced protective effect by several drugs (alpha2- and beta-adrenergic antagonists, neuropeptide Y antagonist, guanethidine), measured levels of released catecholamines in blood and urine and the in vitro response of isolated lungs exposed to 0.4 ppm ozone all seem to suggest that ozone can stimulate pulmonary adrenergic fibers and induce the local release of catecholamines and neuropeptide Y, this resulting in transient protection against pulmonary edema. We also showed that, 48 hr after the exposure, ozone increased the baseline microvascular permeability and the response to low concentrations of acetylcholine [less ▲]

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See detailRegular compactly supported wavelets in Sobolev spaces
Bastin, Françoise ULg; Laubin, P.

in Duke Mathematical Journal (1997), 87(3), 481-508

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See detailSurveillance des états hypertensifs sévères
Brichant, Jean-François ULg

in Vaisseaux, Coeur, Poumons (1997), 2

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See detailNaCl salinity and temperature effects on growth of three wood-rotting basidiomycetes from a Papua New Guinea coastal forest
Castillo Cabello, Gabriel ULg; Demoulin, Vincent ULg

in Mycological Research (1997)

The growth of three wood inhabiting basidiomycetes (Microporus xanthopus, Pycnoporus sanguineus and Schizophyllum commune) isolated from a tropical coastal forest of Papua New Guinea is characterized in ... [more ▼]

The growth of three wood inhabiting basidiomycetes (Microporus xanthopus, Pycnoporus sanguineus and Schizophyllum commune) isolated from a tropical coastal forest of Papua New Guinea is characterized in relation to temperature and NaCl salinity. P. sanguineus and M. xanthopus present a very similar response to NaCl salinity, but P. sanguineus has a wider tolerance for temperature variations. S. commune withstands wide temperature variations, but it is the only one to present a marked salt resistance. This correlates with its abundance along the sea. The presence of P. sanguineus in the same habitat is rather unexpected since it is very sensitive to NaCl salinity. Its high growth rate probably allows it to take advantage of periods of high rains that limit salt accumulation. [less ▲]

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See detailCalibration of a finite element model for bolted endplate steel connections
Bursi, O.; Jaspart, Jean-Pierre ULg

in Journal of Constructional Steel Research (1997), 44(No 3), 225-262

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See detailLa cavernostomie: une ancienne technique parfois efficace dans le traitement des abcès pulmonaires
Defraigne, Jean-Olivier ULg; Siquet, J.; Limet, Raymond ULg

in Revue Médicale de Liège (1997), 52(7), 498-501

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See detailThe Photoabsorption Spectrum of Vinylchloride (C2H3Cl) in the 8-12 eV Range.
Locht, Robert ULg; Leyh, Bernard ULg; Hottmann, K. et al

in Chemical Physics (1997), 220

The photoabsorption spectrum of vinylchloride (C2H3Cl) has been measured using synchrotron radiation and has been analyzed in detail between 8-12 eV photon energy. Valence and virtual valence and Rydberg ... [more ▼]

The photoabsorption spectrum of vinylchloride (C2H3Cl) has been measured using synchrotron radiation and has been analyzed in detail between 8-12 eV photon energy. Valence and virtual valence and Rydberg transitions have been identified and classified. Tentative assignments were based on the ionization energies as measured by He(I)- and threshold photoelectron spectroscopy, as reported in the joined paper. Many features have been identified as being members of vibrational progressions belonging to the observed Rydberg series. [less ▲]

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See detailIn vivo and in vitro development of preantral follicles
Van den Hurk, R.; Bevers, M. M.; Beckers, Jean-François ULg

in Theriogenology (1997), 47(1), 73-82

The paper presents the state of the art concerning the in vitro growth and differentiation of preantral follicles, i.e. from the primordial to the antral stage, in mammals. Attention is paid to their ... [more ▼]

The paper presents the state of the art concerning the in vitro growth and differentiation of preantral follicles, i.e. from the primordial to the antral stage, in mammals. Attention is paid to their normal structure and development, nomenclature, isolation and culture methods, effects of systemic and local compounds on their development, and viability of isolated and cultured follicules, with special reference to the bovine. In vivo, various endocrine and locally produced compounds stimulate neovascularization or innervation of small follicles, which provide nutrients, cytokines, hormones and neuropeptidergic substances, necessary of survival of follicles and initiation of follicle growth. In vitro, FSH, activin, EGF, TGFs and IVP seem important for survival and growth of cultured preantral follicles. However, many reported in vitro effects of hormonal compounds on preantral follicles, especially on those from the bovine, have to be interpreted carefully, since these studies presented little information on oocyte quality. In contrast to preantral follicles from small laboratory animals, pigs and humans, those from cows will not soon be usable for IVP, since their oocyte is relatively small and their growth rate relatively slow. Although practical application of especially small preantral for IVP of live-stock species still is far away, it should not be considered an utopia. [less ▲]

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See detailThe Major Homology Region Of Bovine Leukaemia Virus P24(Gag) Is Required For Virus Infectivity In Vivo
Willems, Luc ULg; Kerkhofs, P.; Attenelle, L. et al

in Journal of General Virology (1997), 78

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See detailBovine herpesvirus type 4. In Lymphotropicherpesviruses: Epstein-Barr virus and Human herpesvirus 8
Thiry, Etienne ULg; Lomonte, P.; Vanderplasschen, Alain ULg et al

in International Agency for research on cancer (1997)

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See detailIdiopathic hypertrophic cranial pachymeningitis mimicking multiple meningiomas: case report and review of the literature.
Deprez, Manuel ULg; Born, Jacques; Hauwaert, Cécile ULg et al

in Acta Neuropathologica (1997), 94(4), 385-9

A case of idiopathic hypertrophic cranial pachymeningitis with an unusual and misleading manifestation is reported. Computed tomography scan, angiographic and magnetic resonance imaging findings were ... [more ▼]

A case of idiopathic hypertrophic cranial pachymeningitis with an unusual and misleading manifestation is reported. Computed tomography scan, angiographic and magnetic resonance imaging findings were suggestive of multiple meningeal neoplasms and a correct diagnosis was made only after meningeal biopsy. This 44-year-old patient had a previous history of an ill-defined systemic disorder associating episcleritis, erythroderma nodosa and multiple peripheral arthritis. We review previous reports of idiopathic cranial pachymeningitis with emphasis on radiological investigation techniques, histopathology and possible dysimmune mechanisms of pathogenesis. [less ▲]

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See detailEfficiency and productivity of the insurance industry in the OECD countries
Fecher-Bourgeois, Fabienne ULg; Donni, Olivier

in Geneva Papers on Risk & Insurance - Issues & Practice (1997), 22(No. 85, October 1997), 523-535

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See detailLes modes de transmission du virus de l'hépatite C
Delwaide, Jean ULg; Gerard, Christiane ULg; Sondag, Danièle ULg et al

in Revue Médicale de Liège (1997), 52(6), 388-391

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See detailLe maintien des droits aux prestations de santé lors d'une séparation de fait ou de corps
Michiels, Olivier ULg

in Divorce : Actualité Juridique, Sociale et Fiscale (1997)

L'article examine la question du maintien des droits aux prestations de santé lors d'une séparation de corps ou d'une séparation de fait.

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See detailA modification of convex approximation methods for structural optimization
Zhang, Wei-Hong; Fleury, Claude ULg

in Computers & Structures (1997), 64(1-4), 89-95

The most popular convex approximation methods used today in structural optimization are discussed in this paper: the convex linearization method (CONLIN), the method of the moving asymptotes (MMA) and the ... [more ▼]

The most popular convex approximation methods used today in structural optimization are discussed in this paper: the convex linearization method (CONLIN), the method of the moving asymptotes (MMA) and the sequential quadratic programming method (SQP). Modifications are made to enhance the reliability of the CONLIN method. In addition, a generalized MMA (GMMA) is established. However, in view of practical difficulties of evaluating second-order derivatives, a fitting scheme is proposed in this work to adjust the convexity of the approximation based on the available function value at the preceding design iteration. Numerical results show that this simple scheme is efficient in our applications. [less ▲]

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See detailActivation of the transcription factor NF-kappaB in lipopolysaccharide-stimulated U937 cells
Legrand-Poels, Sylvie ULg; Maniglia, Salvator; Boelaert, J. R. et al

in Biochemical Pharmacology (1997)

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See detailPropriétés des profils de flux d'induction magnétique dans les céramiques supraconductrices
Vanderbemden, Philippe ULg

in Bulletin Scientifique de l'Association des Ingénieurs Electriciens sortis de l'Institut Electrotechnique Montefiore (1997), 2

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See detailLe bois de tension. 1 Définition et distribution dans l'arbre.
Jourez, Benoît ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (1997), 1(2), 100-112

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See detailOrigine des produits animaux et empreinte génétique
Portetelle, Daniel ULg; Mortiaux, Frédéric; Burny, Arsène et al

in Agricontact (1997), 294

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See detailNumerical simulation of a quantum particle in a box
Hermann, Raphaël ULg

in Journal of Physics : A Mathematical & General (1997), 30(11), 3967-3975

It is shown how one can get numerical prediction of quantum mechanical particle behaviour without using the Schrodinger equation. The main steps of this development are the non-differentiability ... [more ▼]

It is shown how one can get numerical prediction of quantum mechanical particle behaviour without using the Schrodinger equation. The main steps of this development are the non-differentiability hypothesis, the equations of motion entailed by this hypothesis, and the numerical formulation of a simple one-dimensional problem: the particle in a box. [less ▲]

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See detailBounds on the Soft Pomeron Intercept
Cudell, Jean-René ULg; Kang, Kyungsik; Kim, Sung Ku

in Physics Letters B (1997), 395

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See detailQuality of life as outcome in the treatment of osteoporosis : The development of a questionnaire for quality of life by the European Foundation for Osteoporosis
Lips, P; Cooper, C; Agnusdei, D et al

in Osteoporosis International (1997), 7

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See detailSurveillance des états hypertensifs sévères
Brichant, Jean-François ULg

in Percentile (1997), 2

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See detailMultiple seawater-derived geochemical signatures in Indian oceanic pelagic clays
Fagel, Nathalie ULg; André, Luc; Debrabant, Pierre

in Geochimica et Cosmochimica Acta (1997), 61(5), 989-1008

This paper reports a geochemical study of oceanic clays. Major and trace elements were analyzed on smectite-rich, clay size (<2 mu m) samples, bulk sediments, and leachate residues from the Central Indian ... [more ▼]

This paper reports a geochemical study of oceanic clays. Major and trace elements were analyzed on smectite-rich, clay size (<2 mu m) samples, bulk sediments, and leachate residues from the Central Indian Basin. Sr-Nd isotopes were also studied to investigate their geochemical evolution during transport in the water column, sedimentation, and diagenesis. The region is of special interest because the sedimentation records the interaction between the detrital supply from the Bengal Fan in the north and the biosiliceous input associated with the equatorial divergence in the south. The clay size fractions display extremely variable trace element contents, e.g., [Ba] = 100-5000 ppm, [Sr] = 20-200 ppm, Ce/Ce* = 0.9-3.3, [Nd] = 10-50 ppm. Although in the argillaceous samples, clay size fractions have a similar trace element imprint to the bulk sediment, some major fractionations occur in the biosiliceous samples between the clay and the bulk sediment, especially for Sr and rare earth elements (REE). Three major components may account for the variable geochemical signatures of these pelagic clays. The first component (component A), already identified by Fagel et al. (1994), is characterized by a homogeneous geochemical signature (La-N/Yb-N = 1.03-1.05; Th/Ta = 12.8-21.1; Ba/Th similar to 28) and a nonradiogenic Nd isotopic composition (Nd-143/Nd-144 similar to 0.511880): it traces a detrital Himalayan-derived origin. The two other components display a seawater-derived isotopic composition with global Sr (Sr-87/Sr-86 similar to 0.709060) and regional Indian Ocean Nd(Nd-143/Nd-144 similar to 0.512200) signatures. Both components are enriched in Sr and Ba (Sr similar to 150 ppm, Ba/Th similar to 500), and they are either enriched in light rare earth elements (LREE, e.g., Nd similar to 50 ppm) in the argillaceous sediments (component B) or LREE-depleted (Nd < 20 ppm) in the biosiliceous sediments (component C). The frequent occurrence of micrometric (<5 mu m) Sr-REE-Th enriched barite grains showing three major habits (rhombic, rounded, dendritic) suggests that these biologically-derived mineral phases had a major role in the genesis of components B and C. A strong clay-barite equilibration is deduced from the Post Archean Australian Shales PAAS-like REE patterns of these barites and the Ba enrichment of the clays. We suggest that it results from two successive mechanisms of exchange. First, at the top of the oxygen minimum zone, the microbial-induced decay of organic matter is proposed to trigger a series of trace element transfers between the various particulate-forming components (clays, barites, and decaying organic coatings). This is proposed as the origin of the clay component B: the barite-derived components (Ba, Sr) and the organic-derived positive Ce anomaly are imported to the clay particles while the PAAS signature of the clays is retained by the remaining barite crystals. Second, after settling, the barites are believed to partly dissolve and recrystallize, especially in the anoxic part of the sedimentary column. This diagenetic barite dissolution is proposed as the origin of the clay component C. Copyright (C) 1997 Elsevier Science Ltd. [less ▲]

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See detailA primal-dual approach in truss topology optimization
Beekers, M.; Fleury, Claude ULg

in Computers & Structures (1997), 64(1-4), 77-88

The objective of truss topology optimization is to find, for a given weight, the stiffest truss, defined as a subset of an initially choosen set of bars called the ground structure. The restrictions are ... [more ▼]

The objective of truss topology optimization is to find, for a given weight, the stiffest truss, defined as a subset of an initially choosen set of bars called the ground structure. The restrictions are bounds on bar volumes and the satisfaction of equilibrium equations. For a single load case and without bounds on bar volumes, the problem can be written as a linear programming problem with nodal displacements as variables. The addition to the objective function of a quadratic term vanishing at the optimum allows us to use a dual solution scheme. A conjugate gradient method is well suited to maximize the dual function. Several ground structures are introduced. For large networks, those where each node is connected to those situated in a certain vicinity give a good compromise between generating a reasonable number of bars and obtaining a sufficient number of possible directions. Some examples taken from the literature are treated to illustrate the quality of the solution and the influence of initial topology. (C) 1997 Civil-Comp Ltd and Elsevier Science Ltd. [less ▲]

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See detailHarm avoidance dimension of the Tridimensional Personality Questionnaire and serotonin-1A activity in depressed patients.
Hansenne, Michel ULg; Pitchot, William ULg; Moreno, A. G. et al

in Biological Psychiatry (1997), 42(10), 959-61

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