Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
Peer Reviewed
See detailNew developments in the application of automatic learning to power system control
Wehenkel, Louis ULg; Glavic, Mevludin; Ernst, Damien ULg

in Proceedings of the 15th Power System Computation Conference (PSCC 2005) (2005)

In this paper we present the basic principles of supervised learning and reinforcement learning as two complementary frameworks to design control laws or decision policies within the context of power ... [more ▼]

In this paper we present the basic principles of supervised learning and reinforcement learning as two complementary frameworks to design control laws or decision policies within the context of power system control. We also review recent developments in the realm of automatic learning methods and discuss their applicability to power system decision and control problems. Simulation results illustrating the potentials of the recently introduced fitted Q iteration learning algorithm in controlling a TCSC device aimed to damp electro-mechanical oscillations in a synthetic 4-machine system, are included in the paper. [less ▲]

Detailed reference viewed: 27 (4 ULg)
Full Text
See detailNew developments in the functionalization of aliphatic polyesters by "click" copper-catalyzed azide-alkyne cycloaddition
Lecomte, Philippe ULg; Riva, Raphaël ULg; Schmeits, Stephanie ULg et al

Conference (2009, June 03)

Nowadays, biodegradable and biocompatible aliphatic polyesters are widely used as environmentally friendly thermoplastics and biomaterials. Nevertheless, the absence of any pendant functional group is a ... [more ▼]

Nowadays, biodegradable and biocompatible aliphatic polyesters are widely used as environmentally friendly thermoplastics and biomaterials. Nevertheless, the absence of any pendant functional group is a severe limitation for the development of novel applications. Our strategy aiming at functionalizing aliphatic polyesters relies on the “click” copper-catalyzed cycloaddition (CuAAC) of alkynes duly substituted by functional groups or even chains onto PCL bearing pendant azides. The aliphatic polyesters bearing pendant azides have been very efficiently synthesized by a straightforward approach, which relies on the ring-opening copolymerization of αClεCL (or γBrεCL) and εCL (or lactide) followed by reaction with sodium azide to convert pendant chlorides or bromides into azides. The alternative reported by Emrick et al. is based on the CuAAC reaction of azides substituted by any functional group onto copolyesters of poly(ε-caprolactone) bearing pendant alkynes. Interestingly enough, Emrick et al. carried out the CuAAc reaction in water at 80°C. Unfortunately, it turned out, at least in our hands, that these conditions can not be extended to the derivatization of more sensitive aliphatic polyesters because degradation was then unavoidable. Nevertheless, we found out that degradation can be minimized whenever the CuAAC reaction is carried out in an organic solvent at lower temperature. Typically, the CuAAC reaction was carried out in DMF or THF at 35°C. Recently, it was shown that supercritical carbon dioxide can be used as a more environmentally friendly solvent than DMF or THF. The contamination by catalytic residues of aliphatic polyesters functionalized by the CuAAC reaction is a severe limitation in view of future applications, especially in the biomedical field. In the last part of this talk, a special attention will be paid on our current efforts to get rid of copper residues. [less ▲]

Detailed reference viewed: 52 (21 ULg)
Full Text
Peer Reviewed
See detailNew developments in the management of osteoporosis.
Reginster, Jean-Yves ULg

in Climacteric : The Journal of the International Menopause Society (2008), 11(S2), 30

Detailed reference viewed: 13 (4 ULg)
Full Text
See detailNew developments in the synthesis of aliphatic polyesters by ring-opening polymerisation
Jérôme, Robert ULg; Lecomte, Philippe ULg

in Smith, R. (Ed.) Biodegradable polymers for polymer industrial applications (2005)

Detailed reference viewed: 50 (7 ULg)
See detailNew developments on the macromolecular engineering of ring-shaped aliphatic polyesters
Lecomte, Philippe ULg; Li, Haiying; Jérôme, Robert ULg

Scientific conference (2008, May 30)

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailNew developments on the ring opening polymerisation of polylactide
Jacobsen, Sven; Fritz, Hans-Gerhard; Degée, Philippe et al

in Industrial Crops & Products (2000), 11

Polylactides (PLA), biodegradable aliphatic polyesters, produced solely from renewable resources may substitute petrochemically based polymers in a broad range of applications in the near future, if we ... [more ▼]

Polylactides (PLA), biodegradable aliphatic polyesters, produced solely from renewable resources may substitute petrochemically based polymers in a broad range of applications in the near future, if we manage to produce them at lower cost and higher efficiency as nowadays. Possible applications include food packaging for meat and soft drinks, films for agro-industry and non-wovens in hygienic products. The authors developed, based on a new catalytic system, a reactive extrusion polymerisation process, which can be used to produce PLA continuously in larger quantities and at lower costs than before. This extrusion polymerisation process has been developed and tested with laboratory scale machines and the possibilities to extend this polymerisation process to lactide based blockcopolymers have been investigated. [less ▲]

Detailed reference viewed: 63 (1 ULg)
Full Text
Peer Reviewed
See detailNew developments on thromboxane and prostacyclin modulators. Part I: thromboxane modulators
Dogné, Jean-Michel ULg; De leval, X.; Hanson, Julien ULg et al

in Current Medicinal Chemistry (2004), 11

Detailed reference viewed: 21 (2 ULg)
Full Text
Peer Reviewed
See detailNew developments on thromboxane and prostacyclin modulators. Part II: prostacyclin modulators
De Leval, X.; Hanson, Julien ULg; David, Jean-Louis ULg et al

in Current Medicinal Chemistry (2004), 11

Detailed reference viewed: 21 (1 ULg)
Full Text
Peer Reviewed
See detailNew developments on thromboxane modulators
Dogné, Jean-Michel ULg; Hanson, Julien ULg; De leval, X. et al

in Mini Reviews in Medicinal Chemistry (2004)

Detailed reference viewed: 19 (3 ULg)
Full Text
Peer Reviewed
See detailA new Devonian flora in Argentina: palaeobotanical and stratigraphic implications
Prestianni, C.; Rustan, J. J.; Vaccan, N. E. et al

Conference (2012)

Detailed reference viewed: 22 (4 ULg)
Full Text
Peer Reviewed
See detailNew Devonian fossil localities in Bolivia
Blieck, A; Gagnier, PY; Bigey, FP et al

in Journal of South American Earth Sciences (1996), 9(5-6), 295--308

Detailed reference viewed: 2 (0 ULg)
Full Text
Peer Reviewed
See detailA new diagnostic tool for in vitro allergy
Gadisseur, Romy ULg; Chapelle, Jean-Paul ULg; Cavalier, Etienne ULg

in Allergy (2009, June), 64

Detailed reference viewed: 73 (17 ULg)
Peer Reviewed
See detailNew dibenzazepine derivatives with disinhibitory and/or antidepressant potential: neurochemical and behavioural study in the open-field and forced swimming tests.
Bruhwyler, J.; Liégeois, Jean-François ULg; Lejeune, C. et al

in Behavioural pharmacology (1995), 6(8), 830-838

Original bioisosteric analogues of clozapine were evaluated for potential disinhibitory and/or antidepressant effects using the open-field test in the rat and Porsolt's forced swimming test in the mouse ... [more ▼]

Original bioisosteric analogues of clozapine were evaluated for potential disinhibitory and/or antidepressant effects using the open-field test in the rat and Porsolt's forced swimming test in the mouse. Attempts to relate the behavioural results to the binding affinities for dopamine (D1, D2), serotonin (5-HT(2)) and muscarinic (M) receptors were also undertaken. In the open-field test, two main profiles were observed. The first profile corresponded to disinhibitory molecules resembling diazepam and ritanserin. The second profile corresponded to antipsychotic compounds resembling either typical (haloperidol, clothiapine) or atypical (clozapine) neuroleptics. The results obtained in the forced swimming test confirmed the neuroleptic-like activity of the second group of compounds, while two compounds of the first group (JL 3 and JL 26) showed an antidepressant-like activity, JL 3 being as active as imipramine. While it was not possible to relate the first profile to any binding interaction, a relation could be established among the second group of compounds between the typical or atypical antipsychotic behavioural profile and the 5-HT(2)/D2 ratio. [less ▲]

Detailed reference viewed: 26 (1 ULg)
Full Text
Peer Reviewed
See detailNew digestive symbiosis in the hydrothermal vent amphipoda Ventiella sulfuris
Corbari, L.; Durand, L.; Cambon-Bonavita, M.-A. et al

in Comptes Rendus Biologies (2012), 335(2), 142-154

Ventiella sulfuris Barnard and Ingram, 1990 is the most abundant amphipod species inhabiting the Eastern Pacific Rise (EPR 9°N) vent fields. This vent-endemic species is frequently encountered near ... [more ▼]

Ventiella sulfuris Barnard and Ingram, 1990 is the most abundant amphipod species inhabiting the Eastern Pacific Rise (EPR 9°N) vent fields. This vent-endemic species is frequently encountered near colonies of Pompeii worms Alvinella pompejana. V. sulfuris specimens were collected during the oceanographic cruise LADDER II at the Bio9 (9°50.3′ N, 2508 m depth) hydrothermal vent site. Main objectives were to highlight the occurrence of bacterial symbiosis in V. sulfuris and to hypothesise their implications in nutrition. Observations in light and electron microscopy (SEM, TEM) showed that the outer body surface and appendages are free of microorganisms. In contrast, the digestive system revealed two major microbial communities settled in the midgut and in the hindgut. Gut contents showed bacterial traces together with abundant fragments of Alvinellid cuticle and setae, from A. pompejana, suggesting that V. sulfuris could directly feed on Alvinellids and/or on their bacterial epibionts. Molecular analyses based on the 16S rRNA genes revealed the diversity of bacterial communities in the digestive system, of which, the Epsilonproteobacteria phylum, could be considered as one of the major bacterial group. Hypotheses were proposed on their symbiotic features and their implications in V. sulfuris nutrition. © 2011 Académie des sciences. Published by Elsevier Masson SAS. All rights reserved. [less ▲]

Detailed reference viewed: 10 (2 ULg)
Full Text
See detailThe new digitized geological map of Wallonia and its applications
Barchy, Laurent; Marion, Jean-Marc ULg

Poster (2003, June)

Objectives: understanding of geological phenomena, development of new methodologies and techniques, to produce and disseminate pertinent, high-quality data and to provide for public authorities: - Surface ... [more ▼]

Objectives: understanding of geological phenomena, development of new methodologies and techniques, to produce and disseminate pertinent, high-quality data and to provide for public authorities: - Surface, subsurface and natural-ressource management - Preventing natural risks and pollution - Regional planning and developmentthe necessary tools [less ▲]

Detailed reference viewed: 12 (3 ULg)
Peer Reviewed
See detailNew dihydrocoumarine derivatives as potential mechanism-based inactivators of serine proteinases
Schynts, M.; Boggetto, N.; Masereel, B. et al

Poster (1992, November 06)

Detailed reference viewed: 3 (0 ULg)
Peer Reviewed
See detailNew dihydrocoumarine derivatives as potential mechanism-based inactivators of serine proteinases
Schynts, M.; Boggetto, N.; Masereel, B. et al

in Pharmaceutisch Weekblad (1992), 14

Detailed reference viewed: 14 (0 ULg)
Peer Reviewed
See detailNew dimensions in tumor immunology: what does 3D culture reveal?
Feder-Mengus, Chantal; Ghosh, Sourabh; Reschner, Anca ULg et al

in Trends in Molecular Medicine (2008), 14(8), 333-40

Experimental models indicate that tumor cells in suspension, unlike solid tumor fragments, might be unable to produce life-threatening cancer outgrowth when transferred to animal models, irrespective of ... [more ▼]

Experimental models indicate that tumor cells in suspension, unlike solid tumor fragments, might be unable to produce life-threatening cancer outgrowth when transferred to animal models, irrespective of the number of cells transferred, although they induce specific immune responses. Human tumor cells cultured in three dimensions display increased pro-angiogenic capacities and resistance to interferons, chemotherapeutic agents or irradiation, as compared with cells cultured in two-dimensional (2D) monolayers. Tumor cells cultured in three dimensions were also shown to be characterized by defective immune recognition by cytotoxic T lymphocytes (CTLs) specific for tumor-associated antigens (TAAs) and by a capacity to inhibit CTL proliferation and dendritic cell (DC) functions. Downregulation of human leukocyte antigen (HLA) or TAA expression and high production of lactic acid might play a role in the elicitation of these effects. Here, we propose that growth in 3D architectures might provide new insights into tumor immunology and could represent an integral missing component in pathophysiological tumor immune escape mechanisms. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailA New Dimethyl Sulfoxide-Based Method for Gene Promoter Methylation Detection
Kholod, Natalia ULg; Boniver, Jacques ULg; Delvenne, Philippe ULg

in Journal of Molecular Diagnostics (2007), 9(5), 574-81

The identification of gene promoter methylation is a useful tool for the molecular diagnosis of human diseases. We have developed a new PCR-based technique for detecting the methylation status of CpG ... [more ▼]

The identification of gene promoter methylation is a useful tool for the molecular diagnosis of human diseases. We have developed a new PCR-based technique for detecting the methylation status of CpG islands of gene promoters. This new method, named methyl-sensitive dimethyl sulfoxide-PCR (Ms-DMSO-PCR), is based on the finding that methylated and unmethylated DNAs show a different sensitivity to the amount of DMSO used in the PCR reaction. For the amplification of methylated DNA, more DMSO is required in comparison to unmethylated DNA. This finding resulted in the development of a simple PCR screening of CpG islands with addition of DMSO in the range from 0 to 8% (v/v), and the same pair of primers is sufficient for distinguishing hyper- or hypomethylated gene promoters from normally methylated sequences. This new technique is a one-step procedure and does not require any modifications of DNA or expensive equipment. Therefore, Ms-DMSO-PCR has the potential to be widely used for clinical applications as well in basic research. [less ▲]

Detailed reference viewed: 68 (1 ULg)
Full Text
See detailA New Discontinuous Galerkin Formulation for Kirchhoff-Love Shells
Noels, Ludovic ULg; Radovitzky, Raul

Conference (2007)

Detailed reference viewed: 13 (1 ULg)