References of "1998"
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See detailExploration isocinétique de la pathologie fémoro patellaire
Croisier, Jean-Louis ULg; Foidart-Dessalle, Marguerite ULg; Reginster, S. et al

in Actes de la 2ème Journée lilloise de Pathologie du Genou (1998, December 18)

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See detailPathologie fémoro patellaire et vaste médial
Croisier, Jean-Louis ULg; Forthomme, Bénédicte ULg; Crielaard, Jean-Michel ULg

in Actes de la 2ème Journée lilloise de Pathologie du Genou (1998, December 18)

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See detailLa prise en charge en Centre de Jour de patients Alzheimer au stade débutant
Adam, Stéphane ULg

Conference (1998, December 17)

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See detailDendrimer-like star block and amphiphilic copolymers by combination of ring opening and atom transfer radical polymerization
Hedrick, James L.; Trollsas, Mikael; Hawker, Craig Jon et al

in Macromolecules (1998), 31(25), 8691-8705

A new type of macromolecular architecture, denoted as dendrimer-like star block copolymers, is reported. These block copolymers are described by a radial geometry where the different generations or layers ... [more ▼]

A new type of macromolecular architecture, denoted as dendrimer-like star block copolymers, is reported. These block copolymers are described by a radial geometry where the different generations or layers are comprised of high molecular weight polymer emanating from a central core. A hexahydroxyl functional core was used as an initiator for the “living” ring opening polymerization (ROP) of ε-caprolactone producing a hydroxyl terminated six arm star polymer with controlled molecular weight and narrow polydispersities (PD < 1.1). Capping these chain ends with dendrons containing activated bromide moieties produced “macro-initiators” for atom transfer radical polymerization (ATRP). Methyl methacrylate was polymerized from these “macro-initiators” in the presence of an organometallic promoter to produce the requisite dendrimer-like star polymers. High molecular weight was obtained with low polydispersities (<1.2). Alternatively, amphiphilic character could be introduced by designing the different layers or generations to be either hydrophobic or hydrophilic. For example, methyl methacrylate (MMA) with either hydroxyethyl methacrylate (HEMA) or methacrylate functional ethylene oxide macromonomers (EO) were polymerized from these “macro-initiators” to provide a hydrophilic outer layer. The use of macromolecular building blocks allows rapid attainment of high polymer in a limited number of steps with purification between transformation requiring only polymer precipitation. [less ▲]

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See detailIn vivo and in vitro effect of new glibenclamide isosteres
Nguyen, Q. A.; Ouedraogo, R.; Antoine, M. H. et al

Conference (1998, December 12)

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See detailCoumarin derivatives, methods of preparation and application as medicines
Reboud-Ravaux, M.; Pochet, L.; Doucet, C. et al

Patent (1998)

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See detailProfils langagiers dans le syndrome de l'X-fragile et le syndrome de Down
Piérart, Bernadette; Comblain, Annick ULg

Conference (1998, December 10)

The analysis of language difficulties in SLI children (Specific Language Impairment children) with normal cognitive abilities and in mentally retarded children (with genetic pathologies) gives us the ... [more ▼]

The analysis of language difficulties in SLI children (Specific Language Impairment children) with normal cognitive abilities and in mentally retarded children (with genetic pathologies) gives us the opportunity to test these different hypotheses. The language specificities of these different syndromes allow us to analyse the reciprociqual and sequential effects of the different language components. This procedure has a theorical and fundamental interest but also a practical interest. Effectively, it leads to numerous applications in speech and language pathology (concerning the pathologies definition as well as the hierarchisation of the therapeutical goals and the construction of the therapeutical programs). [less ▲]

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See detailLa résistance bactérienne aux antibiotiques, un modèle exemplaire d'évolution moléculaire dirigée
Ghuysen, Jean-Marie ULg

in Verhandelingen - Koninklijke Academie voor Geneeskunde van Belgie (1998), 60(4), 287-294

The simplest conceivable event that can occur at the gene level can result in the development of efficacious resistance tot antibiotics. The bacterial world behaves as an enormous organism whose cells can ... [more ▼]

The simplest conceivable event that can occur at the gene level can result in the development of efficacious resistance tot antibiotics. The bacterial world behaves as an enormous organism whose cells can exchange their genes very easily. Accordingly, oppotunities for the exhcange of genetic material in nature are probably unlimited. This knowledge cannot be ignored. It leads to the important conclusion that the antibiotics are societal drugs. A resistance gene which has appeared somewhere in the world can travel far and fast. [less ▲]

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See detailDeep imaging of AXJ2019+112: The luminosity of a ``Dark Cluster''
Benitez, N.; Broadhurst, T.; Rosati, P. et al

in Paul, J.; Montmerle, T.; Aubourg, E. (Eds.) 19th Texas Symposium on Relativistic Astrophysics and Cosmology (1998, December 01)

We detect a distant cluster of galaxies at z ~1 centered on the QSO lens and luminous X-ray source AXJ2019+112 (Hattori et al 1997). The mass-to-light ratio within an aperture of 0.4 h ^{-1}Mpc determined ... [more ▼]

We detect a distant cluster of galaxies at z ~1 centered on the QSO lens and luminous X-ray source AXJ2019+112 (Hattori et al 1997). The mass-to-light ratio within an aperture of 0.4 h ^{-1}Mpc determined using the X-ray temperature is M_x / L_V = 190^{+95}_{-66}h(M/L_V)[SUB]sun[/SUB]. The strong lens model yields a compatible value, M/L_V = 315^{+80}_{-80}h(M/L_V)[SUB]sun[/SUB], whereas an independent weak lensing analysis sets an upper limit of M/L_V < 440 h(M/L_V)[SUB]sun[/SUB]. This confirms that AXJ2019+112 has a M/L ratio similar to that of z < 1 massive clusters. [less ▲]

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See detailPhase behavior of diblock copolymers between styrene and n-alkyl methacrylates
Ruzette, A. V. G.; Banerjee, P.; Mayes, A. M. et al

in Macromolecules (1998), 31(24), 8509-8516

In contrast to most diblock copolymers which exhibit the classical upper critical ordering transition (UCOT), polystyrene-b-poly n-butyl methacrylatePS-b-PBMAhas been shown to undergo ordering upon ... [more ▼]

In contrast to most diblock copolymers which exhibit the classical upper critical ordering transition (UCOT), polystyrene-b-poly n-butyl methacrylatePS-b-PBMAhas been shown to undergo ordering upon heating through a lower critical ordering transition (LCOT). Here we report the phase behavior of a family of diblock copolymers formed from styrene and a homologous series of n-alkyl methacrylates, as determined by combined dynamic rheological testing and small-angle neutron scattering (SANS). It is shown that the shortest side chain methacrylates, with the exception of methyl methacrylate, exhibit the LCOT, while for side chains longer than n-butyl, the copolymers exhibit the classical UCOT behavior. Combined group contribution/lattice fluid model calculations of the solubility parameter and specific volume of the corresponding homopolymers qualitatively support these observations. The same calculations were further employed to molecularly design LCOT behavior into a new diblock material consisting of styrene and a random copolymer of methyl and lauryl methacrylate, denoted PS-b-P(MMA-r-LMA). The success of this approach suggests a simple semiquantitative method for predicting and designing the phase behavior of weakly interacting polymer pairs. [less ▲]

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See detailObservations of Coronal Structures Above an Active Region by EIT and Implications for Coronal Energy Deposition
Neupert, W. M.; Newmark, J.; Delaboudinière, J.-P. et al

in Solar Physics (1998), 183

Solar EUV images recorded by the EUV Imaging Telescope (EIT) on SOHO have been used to evaluate temperature and density as a function of position in two largescale features in the corona observed in the ... [more ▼]

Solar EUV images recorded by the EUV Imaging Telescope (EIT) on SOHO have been used to evaluate temperature and density as a function of position in two largescale features in the corona observed in the temperature range of 1.0-2.0MK. Such observations permit estimates of longitudinal temperature gradients (if present) in the corona and, consequently, estimates of thermal conduction and radiative losses as a function of position in the features. We examine two relatively cool features as recorded in EIT's Feix/x (171Å) and Fexii (195Å) bands in a decaying active region. The first is a long-lived loop-like feature with one leg, ending in the active region, much more prominent than one or more distant footpoints assumed to be rooted in regions of weakly enhanced field. The other is a near-radial feature, observed at the West limb, which may be either the base of a very high loop or the base of a helmet streamer. We evaluate energy requirements to support a steady-state energy balance in these features and find in both instances that downward thermal conductive losses (at heights above the transition region) are inadequate to support local radiative losses, which are the predominant loss mechanism. The requirement that a coronal energy deposition rate proportional to the square of the ambient electron density (or pressure) is present in these cool coronal features provides an additional constraint on coronal heating mechanisms. [less ▲]

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See detailWFPC2 PSF Subtractions
Baggett, S.; Remy, M.; Surdej, Jean ULg et al

in Bulletin of the American Astronomical Society (1998, December 01)

Subtraction of scaled PSFs from direct CCD images of quasars (or stars) offers not only the possibility of detecting the presence of host or foreground galaxies (or companions like brown dwarfs or planets ... [more ▼]

Subtraction of scaled PSFs from direct CCD images of quasars (or stars) offers not only the possibility of detecting the presence of host or foreground galaxies (or companions like brown dwarfs or planets) but also provides a means of deriving accurate photometry of the primary objects. A series of PSF subtraction tests have been performed, using observed PSFs from the WFPC2 PSF Library as well as TinyTim PSFs; preliminary results indicate that appropriate synthetic TinyTim PSFs perform as well as observed PSFs. Specifically, using an optimally selected observed PSF, near the target on the chip ( < 10arcsec ), close in focus (within 1-2 microns), similar in spectral type, and with good S/N, yielded single photometric values with an RMS of ~ 0.01-0.02 mag. Using a carefully constructed synthetic PSF, close in focus and jitter to the target image, and as close as possible to the center of the target, resulted in photometric results with an RMS similar to that achieved with the observed PSF (0.01-0.02 mag). [less ▲]

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See detailVariabilite cyclique d'etoiles Wolf-Rayet apparemment isolees.
Morel, Thierry ULg; St-Louis, N.

in Journal of the Royal Astronomical Society of Canada (1998), 92

Not Available

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See detailPolarization properties of a sample of broad absorption line and gravitationally lensed quasars
Hutsemekers, Damien ULg; Lamy, H.; Remy, M.

in Astronomy and Astrophysics (1998), 340

New broad-band linear polarization measurements have been obtained for a sample of 42 optically selected QSOs including 29 broad absorption line (BAL) QSOs. The polarization properties of different sub ... [more ▼]

New broad-band linear polarization measurements have been obtained for a sample of 42 optically selected QSOs including 29 broad absorption line (BAL) QSOs. The polarization properties of different sub-classes have been compared, and possible correlations with various spectral indices searched for. The main results of our study are: (1) Nearly all highly polarized QSOs of our sample belong to the sub-class of BAL QSOs with low-ionization absorption features (LIBAL QSOs). (2) The range of polarization is significantly larger for LIBAL QSOs than for high-ionization (HI) BAL QSOs and non-BAL QSOs. (3) There is some indication that HIBAL QSOs as a class may be more polarized than non-BAL QSOs and therefore intermediate between LIBAL and non-BAL QSOs, but the statistics are not compelling from the sample surveyed thus far. (4) For LIBAL QSOs, the continuum polarization appears significantly correlated with the line profile detachment index, in the sense that LIBAL QSOs with P Cygni-type profiles are more polarized. No correlation was found with the strength of the low- or the high-ionization absorption features, nor with the strength or the width of the emission lines. These results are consistent with a scenario in which LIBAL QSOs constitute a different class of radio-quiet QSOs with more absorbing material and more dust. Higher maximum polarization can therefore be reached, while the actually measured polarization depends on the geometry and orientation of the system as do the line profiles. The observed correlation is interpreted within the framework of recent ``wind-from-disk'' models. Tables~2 and 3 are also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html}\fnmsep\thanks{Based on observations collected at the European Southern Observatory (ESO, La Silla) [less ▲]

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See detailProcédé pour la polymérisation radicalaire contrôlée
Creutz, Serge; Dubois, Philippe; Jérôme, Robert ULg

Patent (1998)

The invention concerns a method for making a polymer or a copolymer by radical polymerisation of at least one unsaturate monomer in the presence of a stabiliser.

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See detailTransport of arginine and ornithine into isolated mitochondria of Saccharomyces cerevisiae.
Soetens, Oriane; Crabeel, Marjolaine; Elmoualij, Benaïssa ULg et al

in European Journal of Biochemistry (1998), 258(2), 702-9

In this work we have characterised the transport of L-arginine and L-ornithine into mitochondria isolated from a wild-type Saccharomyces cerevisiae strain and an isogenic arg11 knock-out mutant. The Arg11 ... [more ▼]

In this work we have characterised the transport of L-arginine and L-ornithine into mitochondria isolated from a wild-type Saccharomyces cerevisiae strain and an isogenic arg11 knock-out mutant. The Arg11 protein (Arg11p) is a mitochondrial carrier required for arginine biosynthesis [Crabeel, M., Soetens, O., De Rijcke, M., Pratiwi, R. & Pankiewicz, R. (1996) J. Biol. Chem. 271, 25011-25019]. Reconstitution experiments have confirmed that it is an L-ornithine carrier also transporting L-arginine and L-lysine by order of decreasing affinity, but not L-histidine [Palmieri, L., De Marco, V., Iacobazzi, V., Palmieri, F., Runswick, M. & Walker, J. (1997) FEBS Lett. 410, 447-451]. Evidence is presented here that the mitochondrial inner membrane contains an L-arginine and L-ornithine transporting system distinct from Arg11p, in keeping with the arginine leaky phenotype of arg11 knock-out mutants. The newly characterised carrier, which we propose to name Bac1p (basic amino acid carrier), behaves as an antiporter catalysing the electroneutral exchange of the basic amino acids L-arginine, L-lysine, L-ornithine and L-histidine and displays the highest affinity for L-arginine (Km of 30 microM). L-Arginine uptake has a pH optimum in the range of 7.5-9 and is inhibited by several sulphydryl reagents, by pyridoxal 5'-phosphate and by cations [less ▲]

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See detailEuropean multicentre evaluation of the Super Aution SA-4220 urinalysis analyser
Galimany, R.; Arambarri, M.; Biosca et al

in Clinical Chemistry & Laboratory Medicine (1998), 36(12), 947-58

A multicentre evaluation of the urine test strip analyser Super Aution-4220 was carried out in six laboratories. The analytical performance of the instrument with regard to imprecision, linearity ... [more ▼]

A multicentre evaluation of the urine test strip analyser Super Aution-4220 was carried out in six laboratories. The analytical performance of the instrument with regard to imprecision, linearity, detection limit, drift, carry-over and method comparison was studied. Using the Aution stick 8 test strip the pH, glucose, protein, ketones, bilirubin, blood, urobilinogen and leukocyte esterase were analysed. Specific gravity measurements were performed by refractive index method. Within-run and between-run imprecision determined at three levels of analyte were good. No carry-over was observed. Obtained results were linear through all the described analytical range. No significant drift was detected. Method comparison with some quantitative methods was performed and showed a good correlation with most of the analytes. The study of interferences showed minor interferences by common therapeutic drugs with the measurement of some analytes. During the assessment period of about 6 months no breakdown occurred in any laboratory. The Super Aution urine analyser appeared to be a highly automated analyser of urinary test strips. The operation was simple and the maintenance required only a few minutes a day. [less ▲]

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See detailSuivi du patient traité par amiodarone
LANCELLOTTI, Patrizio ULg; Melon, Pierre ULg; Kulbertus, Henri ULg

in Revue Médicale de Liège (1998), 53(12), 762-5

Amiodarone is a highly effective antiarrhythmic agent. Its iodine content and tissue accumulation are however responsible for various side effects. In this article, we review the various amiodarone ... [more ▼]

Amiodarone is a highly effective antiarrhythmic agent. Its iodine content and tissue accumulation are however responsible for various side effects. In this article, we review the various amiodarone related side effects and propose a monitoring chart for patients treated by this specific agent. [less ▲]

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