References of "Scientific congresses and symposiums"
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See detailSynthèse et évaluation pharmacologique d’un méthanesulfonamide pyridinique apparenté à l’acide niflumique
Julemont, F.; De Leval, X.; Neven, P. et al

Poster (2001, June 01)

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See detailComposite structures design for strength and stiffness with respect to ply thickness and/or fibers orientation
Bruyneel, Michaël ULg; Duysinx, Pierre ULg; Fleury, Claude ULg

in CHENG, Gen Dong (Ed.) Proceedings of the 4th World Congress of Structural and Multidisciplinary Optimization WCSMO4 (2001, June)

This paper presents an optimization approach that allows the design of composite structures under stiffness and strength criteria, with fibers orientations and plies thickness taken into account in the ... [more ▼]

This paper presents an optimization approach that allows the design of composite structures under stiffness and strength criteria, with fibers orientations and plies thickness taken into account in the same optimization loop. The approach is based on the sequential convex programming. An industrial application is presented. [less ▲]

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See detailScreening of pectolytic microorganisms by near infrared reflectance spectroscopy.
Sinnaeve, G.; Ciza, A.; Deconinck, T. et al

Poster (2001, June)

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See detailLeast Cost Structural Optimization Oriented Preliminary Design
Rigo, Philippe ULg

in Ship Production Symposium’2001, SNAME, Ypsilanti, Michigan, USA, Paper #15, Juin 2001 (2001, June)

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See detailRepresenting Periodic Temporal Information with Automata
Wolper, Pierre ULg

in Proc. Eighth International Symposium on Temporal Representation and Reasoning (2001, June)

Motivated by issues in temporal databases and in the verification of infinite-state systems, this talk considers the problem of representing periodic dense time information. Doing so requires handling a ... [more ▼]

Motivated by issues in temporal databases and in the verification of infinite-state systems, this talk considers the problem of representing periodic dense time information. Doing so requires handling a theory that combines discrete and continuous variables, since discrete variables are essential for representing periodicity. An automata-based approach for dealing with such a combined theory is thus introduced. [less ▲]

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See detailSolvent detection in indoor air with a sensor array
Maternova, J.; Romain, Anne-Claude ULg; Nicolas, Jacques ULg

in Proceedings of the 8th conference Eurodeur (2001, June)

Air composition in dwellings and public buildings is studied by means of gas chromatography and a sensor micro array 01D28 (MICROSENS, Swiss). Only benzene and its alkyl-derivatives are quantified. The ... [more ▼]

Air composition in dwellings and public buildings is studied by means of gas chromatography and a sensor micro array 01D28 (MICROSENS, Swiss). Only benzene and its alkyl-derivatives are quantified. The micro array 01D28 is composed of six metal oxide gas sensors (SnO2 doped by Pd) equipped with standard or inter-digited electrodes. Isothermal working mode (500oC for all sensors) is applied. Conductivities after 10 minutes of signal acquisition in the studied air are considered as characterizing its chemical composition. Discriminant Function Analysis (DFA) and different linear regression techniques (Inverse Least Squares, Principal Components Regression and Partial Least Squares) are applied to find a relation between the sensors signals and the indoor air composition as determined by the gas chromatography. The presented results suggest that the monitoring of aromatics substances in the indoor air by means of a micro-array of metal oxide gas sensors is possible. The array distinguishes polluted and non-polluted air and it can even evaluate the concentration of the benzene and the toluene. [less ▲]

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See detailA Framework for Simulation Bases Design of Ship Structures
Rigo, Philippe ULg; Karr, D.; Na, S. S. et al

in Ship Production Symposium’2001, SNAME: Ypsilanti, Michigan ,USA, Paper #9, June 2001 (2001, June)

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See detailCell turnover in BLV-infected sheep
Debacq, Christophe; Peremans, T.; Kerkhofs, Pierre et al

in Aids Research and Human Retroviruses": 10th International Conference on Human Retrovirology: HTLV and Related Viruses, (2001, June)

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See detailThe follow-up of financial value creation indicators to prevent bankruptcies in Belgian SMEs : an empirical multivariate approach
Van Caillie, Didier ULg; Arnould, Sophie ULg

in Babson College Conference (Ed.) Acts of the 2001 Babson College Conference (2001, June)

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Peer Reviewed
See detailMulti-Sensor 3D Image Fusion: Technologies for an Urban Common Operating Picture
Waxman, Allen M.; Verly, Jacques ULg; Fay, David A.

Conference (2001, June)

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See detailEstimating diagonal second order terms in structural approximations with quasi-Cauchy techniques
Duysinx, Pierre ULg; Nguyen, Van Hien; Bruyneel, Michaël ULg et al

in CHENG, Gen Dong (Ed.) Proceedings of the 4th World Congress of Structural and Multidisciplinary Optimization WCSMO4 (2001, June)

This paper reports preliminary results obtained when estimating diagonal second order terms to be used in structural approximations with the quasi-Cauchy updates which was recently proposed by Zhu ... [more ▼]

This paper reports preliminary results obtained when estimating diagonal second order terms to be used in structural approximations with the quasi-Cauchy updates which was recently proposed by Zhu, Nazareth, and Wolkowicz (SIAM J. of Optimization, 9 (4), 1192-1204, 1999). At first, the theory of quasi-Cauchy updates is presented. Main characteristics of the developments that were necessary to use quasi-Cauchy updates in the context of structural optimization are drawn. The available numerical results allow comparing quasi-Cauchy second order term estimations with other estimation procedures. [less ▲]

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See detailA time-frequency technique for the stability analysis of impulse responses from nonlinear aeroelastic systems
Dimitriadis, Grigorios ULg; Cooper, J. E.

in Proceedings of the 2001 International Forum on Aeroelasticity and Structural Dynamics (2001, June)

A time-frequency method is proposed for the analysis of response time histories from nonlinear aeroelastic systems. The approach is based on a time-varying curve-fit of the Short Time Fourier Transform of ... [more ▼]

A time-frequency method is proposed for the analysis of response time histories from nonlinear aeroelastic systems. The approach is based on a time-varying curve-fit of the Short Time Fourier Transform of the impulse response. It is shown that the method can be used in order to obtain a clear picture of the sub-critical stability of a number of aeroelastic systems with a variety of structural and aerodynamic nonlinearities. Additionally, frequency and amplitude information can be obtained for both the linear and nonlinear signatures of the response signals in the sub and post-critical regions. Finally, it is shown that, given certain types of nonlinear functions, subcritical damping trends can be extrapolated to predict bifurcation airspeeds. [less ▲]

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See detailAeroelastic and Structural Design of an All-Moveable Aircraft Fin
Cooper, J. E.; Bureerat, S.; Sensberg, O. et al

in Hönlinger, Heinz (Ed.) Proceedings of the CEAS Conference on Multidisciplinary Aircraft Design and Optimization (2001, June)

The Lagrange Multi-Disciplinary Design Optimisation (MDO) code is used for the preliminary study into design aspects of a generic all-movable aircraft fin. It is shown how the control effectiveness at ... [more ▼]

The Lagrange Multi-Disciplinary Design Optimisation (MDO) code is used for the preliminary study into design aspects of a generic all-movable aircraft fin. It is shown how the control effectiveness at high speeds can be increased through variation of the attachment position and stiffness, whilst still meeting strength and aeroelastic stability constraints. [less ▲]

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See detailForce Limiting at CSL premises
Grodent, Christophe ULg; Cucchiaro, Antonio ULg; ronchain, philippe

(2001, June)

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Peer Reviewed
See detailSum-frequency generation characterisation of the water/polyethylene glycol interface
Dreesen, Laurent ULg; Humbert, Christophe; Hollander, Philippe et al

Poster (2001, June)

Detailed reference viewed: 8 (1 ULg)
See detailOutil d'aide à l'optimisation de l'enveloppe de bâtiment, au stade de l'esquisse d'avant-projet
Hauglustaine, Jean-Marie ULg

Conference (2001, June)

L'étude a pour but d'introduire, au stade de l'esquisse, une méthode rationnelle d'aide à la conception de l'enveloppe d'un bâtiment, avec pour double objectif de respecter les coûts (de construction et d ... [more ▼]

L'étude a pour but d'introduire, au stade de l'esquisse, une méthode rationnelle d'aide à la conception de l'enveloppe d'un bâtiment, avec pour double objectif de respecter les coûts (de construction et d'usage) et d'améliorer la performance énergétique du projet (réglementaire et consommations). Respectant le contexte multicritère et multi-acteurs propre à tout projet d'architecture, un outil interactif a été développé, qui propose, aux acteurs d'un projet, de définir le projet qu'ils souhaitent en répondant à un questionnaire et/ou en dessinant l'esquisse, à main levée. Une procédure d'optimisation utilisant un algorithme génétique permet également de déterminer : pour un seul acteur, le projet optimal, défini par la combinaison de paramètres, qui présente des performances lui offrant la meilleure satisfaction possible ; pour un ensemble d'acteurs, le meilleur compromis entre les scénarios spécifiés, résultant de la combinaison des valeurs de paramètres, qui, à la fois, maximise les performances du projet, et donne, à tous les acteurs, la plus égale et la plus grande satisfaction possible. [less ▲]

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See detailNumerical Simulation of Lubricated Contact between Solids in Metal Forming Processes using the Arbitrary Lagrangian Eulerian Formulation
Boman, Romain ULg; Ponthot, Jean-Philippe ULg

in Simulation of Material Processing: Theory, Methods and Application: Proceedings of the 7th International Conference NUMIFORM 2001 (2001, June)

Detailed reference viewed: 18 (10 ULg)
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See detailStudy of the sugar ingot flow-patterns in the Notre-Dame Refinery silo in Oreye
Job, Nathalie ULg; Dardenne, A.; Pirard, Jean-Paul ULg

Poster (2001, May 29)

Detailed reference viewed: 4 (2 ULg)
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See detailSoup 'n Old Clothes : The Arts of Frank Zappa and Captain Beefheart
Delville, Michel ULg

in Oficina de poesia : Revista de palavra e da imagem (2001, May 29)

Detailed reference viewed: 17 (2 ULg)
See detailX-Ray Emissions from Jupiter
Gladstone, G.; Waite, J.; Grodent, Denis ULg et al

Conference (2001, May 29)

X-ray emissions from Jupiter have been observed for over 20~years. Jovian x-ray emissions are associated with the high-latitude aurora and with solar fluorescence and/or an energetic particle source at ... [more ▼]

X-ray emissions from Jupiter have been observed for over 20~years. Jovian x-ray emissions are associated with the high-latitude aurora and with solar fluorescence and/or an energetic particle source at low-latitudes as identified by past Einstein and ROSAT observations. Enhanced auroral x-rays were also observed to be associated with the impact of Comet Shoemaker-Levy~9. The high-latitude x-ray emissions are best explained by energetic sulfur and oxygen ion precipitation from the Jovian magnetosphere, a suggestion that has been confirmed by recent Chandra ACIS observations. Exciting new information about Jovian x-ray emissions has been made possible with Chandra's High Resolution Camera. We report here for the first time the detection of a forty minute oscillation associated with the Jovian x-ray aurora. With the help of ultraviolet auroral observations from Hubble Space Telescope, we pinpoint the auroral mapping of the x-rays and provide new information on the x-ray source mechanism. [less ▲]

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See detailSynthesis and pharmacological evaluation of pyridinic methanesulfonamides as potential COX-2 inhibitors
Julémont, F.; de Leval, X.; Neven, P. et al

Conference (2001, May 24)

Detailed reference viewed: 4 (0 ULg)
Peer Reviewed
See detailThe Flexihealth project: combining the competing demands of flexibility practices and employee health.
Vandenberghe, Christian; De Zanet, Fabrice ULg; Demez, G. et al

Conference (2001, May 19)

Detailed reference viewed: 8 (3 ULg)
Peer Reviewed
See detailMigrant workers in the Pearl River Delta : Between Discursive Inclusion and Exclusion
Florence, Eric ULg

in Martiniello, Marco; Withol de Wenden, Catherine; Entzinger, Han (Eds.) Migration Between States and Markets (2001, May 17)

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See detailSynthesis and ring-opening polymerization of α-chloro-ε-caprolactone
Lecomte, Philippe ULg; Lenoir, Sandrine ULg; Xudong, Lou et al

Poster (2001, May 16)

Detailed reference viewed: 20 (4 ULg)
See detailElectrografting of conducting polymers onoto ITO surfaces
Labaye, David Emmanuel; Jérôme, Christine ULg; Demoustier-Champagne, Sophie et al

Poster (2001, May 16)

Detailed reference viewed: 20 (2 ULg)
See detailL'hypertension artérielle et risque cardio-vasculaire
Krzesinski, Jean-Marie ULg

Conference (2001, May 10)

Detailed reference viewed: 5 (1 ULg)
See detailCusp studies with IMAGE-FUV
Frey, H. U.; Mende, S. B.; Fuselier, S. A. et al

Conference (2001, May 01)

The FUV instrument on IMAGE frequently observes localized ultraviolet emission on the high latitude dayside, poleward of the normal auroral oval location. This emission is especially distinct in the ... [more ▼]

The FUV instrument on IMAGE frequently observes localized ultraviolet emission on the high latitude dayside, poleward of the normal auroral oval location. This emission is especially distinct in the observations of Doppler shifted Lyman alpha emission from precipitating protons. We interpret this emission as the optical signature of precipitation into the cusp after lobe reconnection at the magnetopause. Several cusp crossings by the FAST satellite are used to establish an estimate of the energy input and the characteristics of the precipitating protons. Multivariate cluster analysis and other statistical tools are used to determine the dependence of this precipitation on solar wind parameters. This shows that under northward IMF and high solar wind dynamic pressure, proton precipitation can be the dominating energy input into the cusp region. [less ▲]

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See detailElectron and Proton Auroral Dynamics
Mende, S. B.; Frey, H. U.; Carlson, C. et al

Conference (2001, May 01)

Data from the IMAGE Wide-band Imaging Camera (WIC),sensitive to far ultraviolet auroras and from the Spectrographic Imager (SI) channel SI12, sensitive to proton precipitation induced Lyman alpha, were ... [more ▼]

Data from the IMAGE Wide-band Imaging Camera (WIC),sensitive to far ultraviolet auroras and from the Spectrographic Imager (SI) channel SI12, sensitive to proton precipitation induced Lyman alpha, were analyzed during a high altitude orbit segment of the IMAGE spacecraft. This segment began during the expansive phase of a substorm. The aurora developed into a double oval configuration, consisting of a set of discrete poleward forms and a separate diffuse auroral oval equatorwards. Although IMF Bz was negative, considerable activity could be seen poleward of the high latitude arcs in the polar cap region. The optical signature of precipitating protons showed that the proton aurora was on the equatorward side of the diffuse aurora and there was a lack of intense energetic proton fluxes in the poleward arcs. A simultaneous FAST pass provided a diagnostic of the particle types in the various regions. These data showed that lower intensity protons were present throughout the entire double oval configuration but with insufficient intensity to produce aurora that could be observed by IMAGE. The FAST data also showed that the bright poleward discrete arcs were accelerated by electrostatic processes, and the wave accelerated electrons were located on the poleward edge of these features. [less ▲]

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See detailDetermination of electron and proton auroral energy inputs from FUV-IMAGE
Gérard, Jean-Claude ULg; Hubert, Benoît ULg; Meurant, M. et al

Conference (2001, May 01)

The FUV experiment onboard the IMAGE spacecraft offers the unique possibility to obtain simultaneous snapshots of the global north aurora every 2 minutes in three different spectral channels. The WIC ... [more ▼]

The FUV experiment onboard the IMAGE spacecraft offers the unique possibility to obtain simultaneous snapshots of the global north aurora every 2 minutes in three different spectral channels. The WIC camera has a broadband channel covering the 135-190 nm interval including the N[SUB]2[/SUB] LBH bands, part of which may be absorbed by O[SUB]2[/SUB]. The SI13 channel is centered on the OI 135.6 nm line which is optically thin and includes a ~ 40% LBH contribution. Finally, the SI12 camera images the Doppler-shifted Ly-α emission excited by the proton aurora. This set of instrumentation is combined with auroral models to determine the electron and the proton energy fluxes from the magnetosphere. Examples will be presented and compared with the values deduced from the NOAA satellites. Simultaneous in-situ measurements of the particle characteristic energy have been combined with the data extracted from the FUV images to validate the models and derive empirical relationships between the particle flux measured by the detectors and the brightness observed by FUV-IMAGE at the footprint of the same magnetic field line. Finally, we will assess the ability to deduce the characteristic energy of the auroral particles from the ratio of co-registered images in the WIC and SI13 cameras. This method is based on the difference of vertical distribution of the LBH and the OI 135.6 nm emissions. It offers the potential to globally remotely sense not only the energy flux from the magnetosphere but also the main features of the electron characteristic energy. [less ▲]

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See detailCusp studies with IMAGE-FUV
Frey, H. U.; Mende, S. B.; Fuselier, S. A. et al

Conference (2001, May 01)

The FUV instrument on IMAGE frequently observes localized ultraviolet emission on the high latitude dayside, poleward of the normal auroral oval location. This emission is especially distinct in the ... [more ▼]

The FUV instrument on IMAGE frequently observes localized ultraviolet emission on the high latitude dayside, poleward of the normal auroral oval location. This emission is especially distinct in the observations of Doppler shifted Lyman alpha emission from precipitating protons. We interpret this emission as the optical signature of precipitation into the cusp after lobe reconnection at the magnetopause. Several cusp crossings by the FAST satellite are used to establish an estimate of the energy input and the characteristics of the precipitating protons. Multivariate cluster analysis and other statistical tools are used to determine the dependence of this precipitation on solar wind parameters. This shows that under northward IMF and high solar wind dynamic pressure, proton precipitation can be the dominating energy input into the cusp region. [less ▲]

Detailed reference viewed: 8 (1 ULg)
See detailDerivation of Auroral Conductances from IMAGE FUV
Immel, T. J.; Mende, S. B.; Frey, H. U. et al

Conference (2001, May 01)

Auroral emissions are observed in 3 separate Far-Ultraviolet (FUV) wavelength regimes by IMAGE. The Wideband Imaging Camera (WIC) is sensitive mainly to N[SUB]2[/SUB] LBH and N I emissions in the 140-190 ... [more ▼]

Auroral emissions are observed in 3 separate Far-Ultraviolet (FUV) wavelength regimes by IMAGE. The Wideband Imaging Camera (WIC) is sensitive mainly to N[SUB]2[/SUB] LBH and N I emissions in the 140-190-nm range, while the Spectrographic Imager (SI) spectrally separates the OI 135.6-nm emission and Doppler shifted hydrogen emissions of the proton aurora at 121.8 nm. The brightness of the N[SUB]2[/SUB] LBH and OI 135.6-nm emissions depend in part on the spectrum and total energy flux of incoming electrons, and on the height-density profile of the respective species, and O[SUB]2[/SUB]. Due mainly to these atmospheric factors, the ratio of the N[SUB]2[/SUB] and OI emissions depends strongly on the characteristic energy of precipitating electrons which, once estimated, can in turn be used to calculate the total energy flux. The proton aurora generates secondary electrons, which excite additional emissions of N[SUB]2[/SUB] and OI. It is not possible to absolutely determine either the total proton energy flux or the characteristic proton energy (<E[SUB]p[/SUB]>) with a single proton imaging channel. However, the proton-induced N[SUB]2[/SUB] and OI emissions depend mainly on the total proton energy flux, so reasonable estimates of <E[SUB]p[/SUB]> can be used in the calculation of proton energy input. Ground-based or in-situ observations of proton energies can help in this determination. With accurate corrections for N[SUB]2[/SUB] and OI airglow emissions, and formulae such as those provided by Robinson et al. [1987], IMAGE FUV can provide global maps of height-integrated conductivity (conductance) in the auroral oval. It is also possible to examine the degree to which the proton aurora contributes to enhanced conductance on a global scale. The promise of providing these conductances using IMAGE's real-time capabilities will be discussed. Robinson, R. M., R. R. Vondrak, K. Miller, T. Dabbs, and D. Hardy, On Calculating Ionospheric Conductances from the Flux and Energy of Precipitating Electrons, J. Geophys. Res., 92, 2566, 1987. [less ▲]

Detailed reference viewed: 16 (2 ULg)
See detailElectron and Proton Auroral Dynamics
Mende, S. B.; Frey, H. U.; Carlson, C. et al

Conference (2001, May 01)

Data from the IMAGE Wide-band Imaging Camera (WIC),sensitive to far ultraviolet auroras and from the Spectrographic Imager (SI) channel SI12, sensitive to proton precipitation induced Lyman alpha, were ... [more ▼]

Data from the IMAGE Wide-band Imaging Camera (WIC),sensitive to far ultraviolet auroras and from the Spectrographic Imager (SI) channel SI12, sensitive to proton precipitation induced Lyman alpha, were analyzed during a high altitude orbit segment of the IMAGE spacecraft. This segment began during the expansive phase of a substorm. The aurora developed into a double oval configuration, consisting of a set of discrete poleward forms and a separate diffuse auroral oval equatorwards. Although IMF Bz was negative, considerable activity could be seen poleward of the high latitude arcs in the polar cap region. The optical signature of precipitating protons showed that the proton aurora was on the equatorward side of the diffuse aurora and there was a lack of intense energetic proton fluxes in the poleward arcs. A simultaneous FAST pass provided a diagnostic of the particle types in the various regions. These data showed that lower intensity protons were present throughout the entire double oval configuration but with insufficient intensity to produce aurora that could be observed by IMAGE. The FAST data also showed that the bright poleward discrete arcs were accelerated by electrostatic processes, and the wave accelerated electrons were located on the poleward edge of these features. [less ▲]

Detailed reference viewed: 9 (1 ULg)
See detailSum-frequency generation characterisation of the water/polyethylene glycol interface
Dreesen, Laurent ULg; Humbert, Christophe; Hollander, Philippe et al

Poster (2001, May)

Detailed reference viewed: 2 (0 ULg)
See detailEffects of a new impeller on oxygen transfer rates in 5L-bioreactors
Bakri, Y.; Jacques, Ph.; Shi, K. et al

Poster (2001, May)

Detailed reference viewed: 12 (0 ULg)
See detailStudies on the Biosynthesis of Bacillomycin homologous compounds by Bacillus subilis NT02
Akpa, E.; Jacques, Ph.; N'Dir, B. et al

Poster (2001, May)

Detailed reference viewed: 7 (0 ULg)
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See detailWind turbines turbulence effects on cable structures in their vicinity
Lilien, Jean-Louis ULg; keutgen, Renaud; raimarckers, Nicolas

in Proceedings of the ISCD 2001 (2001, May)

Actual wind turbines size can be as large as 80 meters diameter (1 MW and over). Behind the wind turbines, mean wind speed is sensibly reduced (approximately 50%) and turbulence severely increased. The ... [more ▼]

Actual wind turbines size can be as large as 80 meters diameter (1 MW and over). Behind the wind turbines, mean wind speed is sensibly reduced (approximately 50%) and turbulence severely increased. The spectral density power of disturbed wind can be assumed similar to classical wind but centred on the rotational speed of the motor. Due to classical speed and shape of wind turbine, corresponding key frequency for disturbed wind is close to one Hz. Any structure in the vicinity of wind turbine can be disturbed by the new wind spectrum created by the turbine, thus existing most of the time for wind speed up to 25 m/s. Cable structure, f.e. overhead lines, have clearly 1 Hz in their first modal shapes. This make them very sensible to buffeting due to the disturbed wind induced by the turbine. Due to continuous excitation, most of the year, fatigue may occur near clamping point and extra damping may be required as well as minimum distance from the wind turbine may be recommended. The anchoring tower (whose first eigenfrequency is generally close to 1 Hz for high voltage lines) will also be affected. This paper will present some simulations of overhead lines disturbances induced by wind turbine in their vicinity. The power spectral density of wind behind the turbine will be deduced from classical spectra of Davenport, but with adaptation due to the rotation of the turbine. Effects on cable will be shown and tentative recommendations of damping as well as clearances from the turbine will be suggested. [less ▲]

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See detailÉtude par microtomographie aux rayons X du retrait associé au séchage convectif d'une boue
Léonard, Angélique ULg; Blacher, Silvia ULg; Crine, Michel ULg

in Boudrant, J.; Pons, M.-N. (Eds.) Récents progrès en génie des procédés N°78 Vol.15 2001 : visualisation, image, modélisation (2001, May)

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See detailThe effect of treadmill training on motor recovery after a spinal cord injury (SCI) in the adult rat.
Oliveira, C.; Multon, S.; Scholtes, Félix ULg et al

Conference (2001, May)

Detailed reference viewed: 1 (1 ULg)
Peer Reviewed
See detailEffects on cellular invasion of two synthetic coumarins
Kempen, I.; Papapostolou, D.; Pochet, L. et al

Conference (2001, May)

Detailed reference viewed: 6 (1 ULg)
See detailTranscriptional regulation of the Chlamydomonas alternative oxidase (Aox1) gene studied with a reporter gene construct
Baurain, Denis ULg; Dinant, Monique; Matagne, René-Fernand ULg

Poster (2001, May)

Beside the cytochrome pathway of respiration, mitochondria of higher plants and many microeukaryotes possess an alternative pathway that bypasses complexes III and IV to directly catalyze the oxidation of ... [more ▼]

Beside the cytochrome pathway of respiration, mitochondria of higher plants and many microeukaryotes possess an alternative pathway that bypasses complexes III and IV to directly catalyze the oxidation of the ubiquinol pool by molecular oxygen. No proton motive force is generated during this reaction and free energy is thus lost as heat. The alternative oxidase (AOX), which is the sole enzyme implicated in this wasteful process, is generally subject to both transcriptional and post-translational regulation. — Recently, we have cloned and characterized two cDNAs and the corresponding gene sequences (AOX1 and AOX2) encoding the alternative oxidase in the green alga Chlamydomonas reinhardtii (1). In order to investigate the transcriptional regulation of the AOX1 gene (which is more strongly expressed than AOX2), we fused the AOX1 promoter to the arylsulfatase-encoding ARS reporter gene. Several transformants expressing the ARS protein were selected and characterized at the molecular level. While AOX transcription is induced or at least enhanced by cytochrome pathway inhibitors in fungi and higher plants, our results indicate that the expression of the AOX1:ARS construct remains unchanged following inhibitor addition in Chlamydomonas. Moreover, its expression was not affected by light, acetate as a carbon source and osmotic stress. A five-to-ten-fold stimulation was however achieved by using nitrate instead of ammonium as a nitrogen source. Effects of toxic compounds (oxidative stress agents and heavy metals) are currently investigated. This work was supported by grants from the Belgian FRFC (2.4527.97) and Fonds Spéciaux pour la Recherche dans les Universités. D. Baurain is a FNRS Research Fellow. (1) Dinant, M., Baurain, D., Coosemans, N., Joris, B. and Matagne, R. F. (2001) Characterization of two genes encoding the mitochondrial alternative oxidase in Chlamydomonas reinhardtii. Curr. Genet. (in press) [less ▲]

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See detailSynthesis and pharmacological evaluation of pyridinic methanesulfonamides as potential COX-2 inhibitors
Julemont, F.; De Leval, X.; Neven, P. et al

Conference (2001, May)

Detailed reference viewed: 3 (0 ULg)
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See detailA critical cysteine residue of bovine leukemia virus SU protein interacts with zinc and plays a role in viral infectivity.
Gatot, Jean-Stéphane; Kerkhofs, Pierre; Burny, Arsène et al

in The 2001 meeting on Retroviruses. (2001, May)

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See detailInhibition mechanism of serine protease by coumarin derivatives
Pochet; Doucet, C.; Dieu, M. et al

Conference (2001, May)

Detailed reference viewed: 43 (0 ULg)
Peer Reviewed
See detailVagal nerve stimulation increases thermal pain tolerance in rats.
Bohotin, C.; Scholsem, M.; Multon, S. et al

Conference (2001, May)

Detailed reference viewed: 2 (0 ULg)
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See detailSynthesis and pharmacological evaluation of 4,6-disubstituted 2,2-dimethylchromans structurally related to the KATP channel opener cromakalim
Sebille, S.; Becker, B.; Boverie, S. et al

Conference (2001, May)

Detailed reference viewed: 6 (3 ULg)
See detailAre cardiac markers useful in patients with chronic renal failure?
Chapelle, Jean-Paul ULg

Conference (2001, May)

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See detailCoastal and shelf biodiversity of the Southern Ocean: the "Ant'Phipoda" project
De Broyer, Claude; Chapelle, Gauthier; Duchesne, Paul-André et al

Poster (2001, May)

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See detailTen years of data gathering of radon exhalation in the Belgian "Province of Luxembourg"
Kuske, Martyna; Debbaut, Vincent ULg; Bomboire, A. et al

in Proceedings of the Third eurosymposium on protection against radon (2001, May)

Detailed reference viewed: 15 (2 ULg)
See detailAssociation between lipoprotein (A) and cardiac troponins in PTCA patients
Lutteri, Laurence ULg; Legrand, Victor ULg; Gielen, J. et al

Poster (2001, May)

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See detailEffects on cellular invasion of 6-(acetoxymethyl)-2-oxo-2H-1-benzopyran-3-carboxylic acid derivatives
Kempen, I.; Pochet, L.; Papapostolu, D. et al

Poster (2001, April 21)

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See detailThe Paradoxes of Marginalization: David Malouf and 'The Great World'
Delrez, Marc ULg

Conference (2001, April 21)

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See detailThe International Liquid Mirror Telescope: Science and Technology
Surdej, Jean ULg

Conference (2001, April 20)

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See detailRecent progress in the macromolecular engineering of poly(ε-caprolactone)
Lecomte, Philippe ULg

Conference (2001, April 19)

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See detailDetermination of divinyl ether synthase activity during storage of potato tubers
Hoyaux, P.; Delcarte, J.; du Jardin, Patrick ULg et al

Poster (2001, April 18)

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See detailStudy of divinyl ether synthase in potato tubers (Solanum tuberosum L.)
Hoyaux, P.; Fauconnier, Marie-Laure ULg; Delcarte, J. et al

Poster (2001, April 18)

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See detailHusserl et Wittgenstein, critiques de la philosophie moderne de la représentation
Leclercq, Bruno ULg

Conference (2001, April 10)

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See detailLessons from the past for a better future: Ethnoecology, a promising link between tradition and science regarding biodiversity management
Malaisse, François ULg

Conference (2001, April 06)

After reviewing biological diversity data concerning tropical countries, main biodiversity issues and challenges are listed. The evolution of the “ethnoecology” concept and its present meaning are ... [more ▼]

After reviewing biological diversity data concerning tropical countries, main biodiversity issues and challenges are listed. The evolution of the “ethnoecology” concept and its present meaning are examined. Starting from two or four roots, including ethnoagronomy, ethnoecology is taking progressively a dominant position regarding local knowledge as well as in modern ecosystems’ management. The various levels of environmental knowledge are pinpointed from examples taken in Tibet, pre-Saharan Morocco, Guinea-Bisseau, Upper Katanga and Zambia, and finally Bolivia. Lessons from the past are highlighted through present ecological studies and interaction outputs are stressed and discussed. Finally, a success story of validation of non-woody forest product is presented, with the establishment of a business subject regarding wild edible mushrooms from the wetter miombo area of South Central Africa. [less ▲]

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See detailBreaking You Down
Delville, Michel ULg

Conference (2001, April 03)

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See detailProcalcitonine: aspects biochimiques et analytiques
Chapelle, Jean-Paul ULg

Conference (2001, April 03)

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See detailFusion of Multi- Sensor Passive and Active 3D Imagery
Fay, David A.; Verly, Jacques ULg; Braun, Michael I. et al

Conference (2001, April)

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See detailComplex protists in Mesoproterozoic rocks.
Javaux, Emmanuelle ULg; knoll, A. H.; Walter, M.

Conference (2001, April)

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See detailIncidence des pratiques parentales relatives au langage écrit et oral sur les attitudes et les compétences en lecture chez les enfants de 11 ans : approche longitudinale
Schillings, Patricia ULg

in Actes du XIIe congrès de l'AIFREF, St Sauveur des Monts, Québec, 18-21 avril 2001 (2001, April)

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See detailImpact assessment of breeding European kingfisher (Alcedo atthis) on prey fish
Hallet, Catherine; Libois, Roland ULg

in Cowx, Ian (Ed.) Interaction between fish and birds: implications for management (abstracts) (2001, April)

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See detailFace milling and turning simulation with the finite element method
Masset, Luc ULg; Debongnie, Jean-François ULg; Beckers, Pierre ULg

in Habraken, Anne (Ed.) Proceedings of the 4th International ESAFORM Conference on Material Forming (2001, April)

The paper describes a new simulation tool that gives the machined surface error in face milling and turning. The form error component due to the workpiece flexibility is computed using Samcef finite ... [more ▼]

The paper describes a new simulation tool that gives the machined surface error in face milling and turning. The form error component due to the workpiece flexibility is computed using Samcef finite element code. The finite element analyses are very efficient on industrial applications thanks to the superelement method. Results are obtained in a short time which makes possible a wide range of simulations such as finding the best tool trajectory, testing several tools and cutting conditions and choosing the most suited fixture design. [less ▲]

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See detailFurther exploration of the mere exposure effect in Alzheimer's disease
Willems, Sylvie ULg; Adam, Stéphane ULg; Van der Linden, Martial et al

in Journal of Cognitive Neuroscience (2001, March 25), Suppl. 58

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See detailLa hernie discale lombaire aujourd'hui.
Martin, Didier ULg

Conference (2001, March 15)

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See detailAdditive migration studied by atomic force microscopy"
Duwez, Anne-Sophie ULg; Nysten, B.

Conference (2001, March 07)

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See detailConsistency of stress smooting by convolution
Debongnie, Jean-François ULg; Beckers, Pierre ULg

Conference (2001, March)

A convolution process is presented in order to smoothen finite element stresses. A comprehensive analysis leads to the fact that a pertinent choice of the convolution kernel has to be done, as consistency ... [more ▼]

A convolution process is presented in order to smoothen finite element stresses. A comprehensive analysis leads to the fact that a pertinent choice of the convolution kernel has to be done, as consistency conditions have to be satisfied. Such kernels are then presented. [less ▲]

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