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See detailHVDC control strategies to improve transient stability in interconnected power systems
Hazra, Jagabondhu; Phulpin, Yannick; Ernst, Damien ULg

in Proceedings of the 2009 IEEE Bucharest PowerTech (2009)

This paper presents three HVDC modulation strategies to improve transient stability in an interconnected power system. AC variables such as rotor speeds, voltage phasors, and tieline power flows are used ... [more ▼]

This paper presents three HVDC modulation strategies to improve transient stability in an interconnected power system. AC variables such as rotor speeds, voltage phasors, and tieline power flows are used as input to the controller that modifies the power flow settings through the HVDC-links. The proposed techniques are tested on the IEEE 24-Bus reliability test system and critical clearing times obtained for several contingencies are analyzed. The paper shows that HVDC modulation can lead to substantial improvement in transient stability. [less ▲]

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See detailTraitement automatique des langues et langues anciennes
Denooz, Joseph ULg; Rosmorduc, Serge

in Traitement automatique des langues (2009), 50

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See detailMonofluoride Bridged, Binuclear Metallacycles of First Row Transition Metals Supported by Third Generation Bis(1-pyrazolyl)methane Ligands: Unusual Magnetic Properties
Reger, Daniel; Watson, R. P.; Foley, E. A. et al

in Inorganic Chemistry (2009), 48

The reaction of M(BF4)2•xH2O, where M is Fe, Co, Cu, and Zn, and the bitopic, bis(pyrazolyl)methane ligand m-[CH(pz)2]2C6H4, Lm, where pz is a pyrazolyl ring, yields the monofluoride bridged, binuclear ... [more ▼]

The reaction of M(BF4)2•xH2O, where M is Fe, Co, Cu, and Zn, and the bitopic, bis(pyrazolyl)methane ligand m-[CH(pz)2]2C6H4, Lm, where pz is a pyrazolyl ring, yields the monofluoride bridged, binuclear [M2(μ-F)(μ-Lm)2](BF4)3 complexes. In contrast, a similar reaction of Lm with Ni(BF4)2•6H2O yields dibridged [Ni2(μ-F)2(μ-Lm)2](BF4)2. The solid state structures of seven [M2(μ-F)(μ-Lm)2](BF4)3 complexes, with M = Fe, Co, Cu, and Zn, indicate that the divalent metal ion is in a five-coordinate, trigonal bipyramidal, coordination environment with either a linear M–F–M bridging arrangement in five of the complexes, or with a slightly bent Cu–F–Cu bridge in two of the complexes. NMR results indicate that [Zn2(μ-F)(μ-Lm)2](BF4)3 retains its dimeric structure in solution. The [Ni2(μ-F)2(μ-Lm)2](BF4)2 complex has a dibridging fluoride structure that has a six-coordination environment about each nickel(II) ion. In the solid state, the [Fe2(μ-F)(μ-Lm)2](BF4)3 and [Co2(μ-F)(μ-Lm)2](BF4)3 complexes show weak intramolecular antiferromagnetic exchange coupling between the two metal(II) ions with J values of –10.4 and –0.67 cm–1, respectively; there is no observed long-range magnetic order. Three different solvates of [Cu2(μ-F)(μ-Lm)2](BF4)3 are diamagnetic between 5 and 400 K, thus showing strong antiferromagnetic exchange interactions of –600 cm–1 or more negative. Mössbauer spectra indicate that [Fe2(μ-F)(μ-Lm)2](BF4)3 exhibits no long-range magnetic order between 4.2 and 295 K and isomer shifts that are consistent with the presence of five-coordinate, high-spin iron(II). [less ▲]

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See detailModernidades múltiples y crítica social de las tecnologías
Delvenne, Pierre ULg; Erpicum, Martin ULg; Hupet, Pierre et al

in Cuadernos sobre Relaciones Internacionales, Regionalismo y Desarrollo (2009), 4(7), 65-90

Although, the links between the ideologies of progress and technological developments are often strong, we are currently observing amore and more virulent social criticism of these evolutions’ ... [more ▼]

Although, the links between the ideologies of progress and technological developments are often strong, we are currently observing amore and more virulent social criticism of these evolutions’ consequences. This paper,written by four European and Latin American researchers, addresses the way as sciences and technology issues are criticised and dealt with in Europe in the framework of “TechnologyAssessment” (TA) offices. Then, important for the authors is to consider that although TA practices proved to be efficient in a European context, such a tool may not be transferable as such in another context. Relying on the concept of “multiplemodernities”, they focus on Latin America to stress the usefulness of building an adapted local TA capacity, through an interactive process of co-construction by the practitionners and various stakeholders, including the public. [less ▲]

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See detailRésumé C.E. n°185.114, du 2 juillet 2008, ASBL Le Poumon Vert de La Hulpe
Delnoy, Michel ULg

in Aménagement - Environnement (2009), 1

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See detailRésumé C.E. n°185.951, du 29 août 2008, de Clercq
Delnoy, Michel ULg

in Aménagement - Environnement (2009), 2

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See detailLe décret du 31 mai 2007 relatif à la participation du public en matière d'environnement : avancées et questions
Delnoy, Michel ULg; Jadot, Benoît

in Delnoy, Michel (Ed.) Actualités du droit de l'aménagement du territoire et de l'environnement - plans et permis (2009)

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See detailLe décret wallon du 22 novembre 2007 sur la prévention et la réparation des dommages environnementaux en droit wallon (I)
Delnoy, Michel ULg; Born, Charles-Hubert

in Aménagement - Environnement (2009), 2

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See detailRésumé T.P.I.C.E., 1er juillet 2008, aff. T-34/04, Regiao autonoma des Açores et autres
Delnoy, Michel ULg

in Aménagement - Environnement (2009), 1

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See detailLe rapport urbanistique et environnemental dans le CWATUP
Delnoy, Michel ULg

in Les réformes du CoBAT et du CWATUP (2009)

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See detailLe dispositif d’interruption des chemins de fer belges pendant la guerre de 1870-1871
Bechet, Christophe ULg

in Colignon, Alain; Lanneau, Catherine; Raxhon, Philippe (Eds.) Radicalités, Identités, Patries, hommage au Professeur Francis Balace (2009)

Description exhaustive à l'aide des documents conservés au Musée Royal de l'Armée Belge du dispositif d'interruption des voies de chemin de fer belges pendant la guerre franco-allemande de 1870-1871 ... [more ▼]

Description exhaustive à l'aide des documents conservés au Musée Royal de l'Armée Belge du dispositif d'interruption des voies de chemin de fer belges pendant la guerre franco-allemande de 1870-1871. Préparatifs de guerre - Expérience de la Guerre - Bilan. [less ▲]

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See detailAntibubbles, liquid onions and bouncing droplets
Vandewalle, Nicolas ULg; Terwagne, Denis ULg; Gilet, Tristan ULg et al

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2009), 344

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See detailLes services à perte : modalités d'un honoraire digne ?
Wildemeersch, Jonathan ULg

in Regards croisées sur l'avenir des professions libérales (2009)

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See detailLa responsabilité des pouvoirs publics: valse à trois temps sur un air de 1382
Wildemeersch, Jonathan ULg

in Kohl, Benoît (Ed.) Droit de la responsabilité (2009)

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See detailBridging classical and molecular cytogenetics of Gossypium
Konan, N'Guessan ULg; Baudoin, Jean-Pierre ULg; D'Hont, A. et al

in Paterson, Andrew (Ed.) Genetics and Genomics of Cotton (2009)

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See detailThe development and experimental validation of a reduced ternary kinetic mechanism for the auto-ignition at HCCI conditions, proposing a global reaction path for ternary gasoline surrogates
Machrafi, Hatim ULg; Cavadias, Simeon; Amouroux, Jacques

in Fuel Processing Technology (2009), 90(2), 247-263

To acquire a high amount of information of the behaviour of the Homogeneous Charge Compression Ignition (HCCI) auto-ignition process, a reduced surrogate mechanism has been composed out of reduced n ... [more ▼]

To acquire a high amount of information of the behaviour of the Homogeneous Charge Compression Ignition (HCCI) auto-ignition process, a reduced surrogate mechanism has been composed out of reduced n-heptane, iso-octane and toluene mechanisms, containing 62 reactions and 49 species. This mechanism has been validated numerically in a OD HCCI engine code against more detailed mechanisms (inlet temperature varying from 290 to 500 K, the equivalence ratio from 0.2 to 0.7 and the compression ratio from 8 to 18) and experimentally against experimental shock tube and rapid compression machine data from the literature at pressures between 9 and 55 bar and temperatures between 700 and 1400 K for several fuels: the pure compounds n-heptane, iso-octane and toluene as well as binary and ternary mixtures of these compounds. For this validation, stoichiometric mixtures and mixtures with an equivalence ratio of 0.5 are used. The experimental validation is extended by comparing the surrogate mechanism to experimental data from an HCCI engine. A global reaction pathway is proposed for the auto-ignition of a surrogate gasoline, using the surrogate mechanism, in order to show the interactions that the three compounds can have with one another during the auto-ignition of a ternary mixture. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

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See detailMain characteristics of hypertensive patients seen in academic hospitals from Belgium: Preliminary analysis
Persu, A.; Ngueta, G.; Krzesinski, Jean-Marie ULg et al

in Acta Clinica Belgica (2009), 64-2(6), 165

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See detailLes anticorps monoclonaux en transplantation rénale
Bonvoisin, Catherine ULg; Weekers, Laurent ULg; Grosch, Stéphanie ULg et al

in Revue Médicale de Liège (2009), 64(5-6), 287-292

Renal transplantation is the best treatment for end-stage renal disease, but requires efficient immunosuppressive therapy. The latter has evolved over recent years with the development of more powerful ... [more ▼]

Renal transplantation is the best treatment for end-stage renal disease, but requires efficient immunosuppressive therapy. The latter has evolved over recent years with the development of more powerful drugs and of monoclonal antibodies with very specific target. The first monoclonal antibodies, acting against the interleukin 2 receptor, named basiliximab and daclizumab, have showed an excellent tolerance profile and efficacy to reduce acute graft rejection. However, in spite of these properties, the development of delayed graft function or the graft and patient survivals at 1 year were not modified by the use of such specific treatment. One potential advantage could yet be a decreasing need for corticosteroids and sometimes calcineurin inhibitors which could provide some long term benefits for the renal graft, but also the patient. Alemtuzumab, another monoclonal antibody, aimed at the membrane glycoprotein CD52, can also decrease the incidence of acute rejection and the depth of the required immunosuppressive therapy. Other antibodies are still in development with some interesting preliminary results which however demand confirmation in larger studies. [less ▲]

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See detailRamses. A New Research Tool in Philology and Linguistics
Rosmorduc, Serge; Polis, Stéphane ULg; Winand, Jean ULg

in Strudwick, Nigel (Ed.) Information Technology and Egyptology in 2008. Proceedings of the meeting of the Computer Working Group of the International Association of Egyptologists (Informatique et Egyptologie), Vienna, 8–11 July 2008 (2009)

This paper introduces Ramses, a database of Late Egyptian texts, currently under development at the University of Liège (Belgium). Ramses sets out to be a new and powerful research tool. Its main ... [more ▼]

This paper introduces Ramses, a database of Late Egyptian texts, currently under development at the University of Liège (Belgium). Ramses sets out to be a new and powerful research tool. Its main applications are linguistically and philologically orientated. After a general overview of the structure of the database, the search engines are described with some detail. [less ▲]

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