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See detailThéorie de l'erreur de circularité
Debongnie, Jean-François ULg

Report (2008)

This report gives the theory of the circularity error, as defined by ISO-norms, that is, the minimum of the radius difference between two concentric circles that enclose the measured curve. The common ... [more ▼]

This report gives the theory of the circularity error, as defined by ISO-norms, that is, the minimum of the radius difference between two concentric circles that enclose the measured curve. The common center of the optimal pair of circles being called the best center, the question of its existence is fully discussed. It is then proved that this problem is equivalent to the research of a circle which is the best approximation of the given curve by respect of a uniform norm. A characterization of the best center is developed, from which the unicity of the best center is proved. [less ▲]

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See detailVariability of edaphic conditions in metal-contaminated sites at multiple scales. Two case studies in temperate and tropical environments
Colinet, Gilles ULg; Leclercq, Julie; Faucon, Michel-Pierre et al

Conference (2008, August)

In numerous places, mining and ore treatment activities have generated environmental contaminations which endanger ecosystem viability and/or human health. In some places, the ecological pressure induced ... [more ▼]

In numerous places, mining and ore treatment activities have generated environmental contaminations which endanger ecosystem viability and/or human health. In some places, the ecological pressure induced by the metal contaminations allowed the development a specific flora, fromwhich candidates for phytoremediation may be selected. A survey of edaphic conditions prevailing for plant growing in contaminated areas around metal smelters has been conducted in belgian calaminary sites (Zn, Pb, Cd contaminations) and in the Katanga province of RDC (Cu contaminations). As the processes generated by the modifications of the soil environment may affect the form of a trace element, that is its distribution through various pools, we investigated physical and chemical fractionation of some metallic trace elements (Cu, Zn, Pb, and Cd) in soils and compared temperate and tropical cases. The results stress the need for a typology of the contaminations that takes into account the classical pedological parameters, even if contaminated sites are far from classical soil environment. The variability of edaphic properties that can occur within small distances is also an important point to consider when planning rehabilitation operations. [less ▲]

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See detailContributions of experimental mouse models to the understanding of African trypanosomiasis.
Antoine-Moussiaux, Nicolas ULg; Magez, Stefan; Desmecht, Daniel ULg

in Trends in Parasitology (2008), 24(9), 411-8

African trypanosomiasis is the collective name for a wide variety of trypanosome infections that affect humans and livestock. In recent years, experimental mice infection models have provided new insights ... [more ▼]

African trypanosomiasis is the collective name for a wide variety of trypanosome infections that affect humans and livestock. In recent years, experimental mice infection models have provided new insights into both human and animal trypanosomiasis. Mouse models seem to be a valuable and versatile tool in trypanosomiasis-associated pathology and immunology research and highlight the variety shown by African trypanosomiases. Indeed, inbred mouse strains have enabled the study of genetic determinants of susceptibility and of the roles of anti-parasite antibodies, inflammatory mediators and anti-inflammatory mediators for each trypanosome species. Remarkable advances relating to the encephalitic stage of sleeping sickness have also been achieved thanks to murine models. The different contributions of murine models to the African trypanosomiases knowledge are presented here. Future search directions are finally proposed, with respect to mouse model opportunities and limitations. [less ▲]

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See detailDu drapeau national, de Copernic et des angles morts en droit public
Behrendt, Christian ULg

Article for general public (2008)

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See detailWater vapor line parameters: Some feedback from atmospheric users
Fally, Sophie; Vandaele, A. C.; Trabelsi, Samy et al

in Proceedings of the "8th Atmospheric Spectroscopy Applications" meeting (ASA2008) (2008, August)

Despite recent major improvements of water vapour databases, the insufficient quality or consistency of the H2O spectroscopic parameters has been reported many times and line parameters are often manually ... [more ▼]

Despite recent major improvements of water vapour databases, the insufficient quality or consistency of the H2O spectroscopic parameters has been reported many times and line parameters are often manually adjusted to minimize residuals and improve the quality of the fits. Atmospheric observations allow assessing the quality of databases through their simulation using the different line parameters reported in those databases. This work presents four concrete examples of the spectroscopic problems and proposed improvements in various spectral regions. [less ▲]

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See detailThe Belgian Competition Council finds a non-profit association guilty of price fixing but does not impose any fine (AIAB)
Petit, Nicolas ULg; Digneffe, Kelly

in e-Competitions (2008), (22333),

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See detailA mathematical modelling of bloom of the coccolithophore Emiliania huxleyi in a mesocosm experiment
Joassin, Pascal ULg; Delille, Bruno ULg; Soetaert, Karline et al

Poster (2008, July 23)

A dynamic model has been developed to represent biogeochemical variables and processes observed during a bloom of Emiliania huxleyi coccolithophore. This bloom was induced in a mesocosm experiment during ... [more ▼]

A dynamic model has been developed to represent biogeochemical variables and processes observed during a bloom of Emiliania huxleyi coccolithophore. This bloom was induced in a mesocosm experiment during which the ecosystem development was followed over a period of 23-days through changes in various biogeochemical parameters such as inorganic nutrients (nitrate, ammonium and phosphate), total alkalinity (TA), dissolved inorganic carbon (DIC), partial pressure of carbon dioxide (pCO2), dissolved oxygen (O2), photosynthetic pigments, particulate organic carbon (POC), dissolved organic carbon (DOC), Transparent Exopolymer Particles (TEP), primary production, and calcification. This dynamic model is based on unbalanced algal growth and balanced bacterial growth. In order to adequately reproduce the observations, the model includes an explicit description of phosphorus cycling, calcification, TEP production and an enhanced mortality due to viral lysis. The model represented carbon, nitrogen and phosphorus fluxes observed in the mesocosms. Modelled profiles of algal biomass and final concentrations of DIC and nutrients are in agreement with the experimental observations. [less ▲]

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See detailInteractive comment on “Presentation, calibration and validation of the low-order, DCESS Earth System Model” by G. Shaffer et al.
Munhoven, Guy ULg

in Geoscientific Model Development Discussions [=GMDD] (2008), 1

The paper "Presentation, calibration and validation of the low-order, DCESS Earth System Model” by G. Shaffer et al. is reviewed.

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See detailA Micromechanical Sensor of Temperature Based on Surface Plasmons Resonance
HASTANIN, Juriy; RENOTTE, Yvon; FLEURY-FRENETTE, Karl et al

in Sensors & Transducers Journal (2008)

This paper reports a new concept of micromechanical sensors of temperature. The sensors consist of a micro-cantilever transducer and optical readout means for monitoring cantilever mechanical response ... [more ▼]

This paper reports a new concept of micromechanical sensors of temperature. The sensors consist of a micro-cantilever transducer and optical readout means for monitoring cantilever mechanical response using the surface plasmons resonance (SPR) phenomenon. This solution has the advantage of reducing the cantilever length due to an ultrahigh resolution of the optical readout means and, therefore a high signal-to-noise ratio can be achieved. [less ▲]

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See detailA Micromechanical Sensor of Temperature Based on Surface Plasmons Resonance
Hastanin, Juriy ULg; Renotte, Yvon ULg; Habraken, Serge ULg

in Sensors & Transducers Journal (2008), 96(9), 8-17

This paper reports a new concept of micromechanical sensors of temperature. The sensors consist of a micro-cantilever transducer and optical readout means for monitoring cantilever mechanical response ... [more ▼]

This paper reports a new concept of micromechanical sensors of temperature. The sensors consist of a micro-cantilever transducer and optical readout means for monitoring cantilever mechanical response using the surface plasmons resonance (SPR) phenomenon. This solution has the advantage of reducing the cantilever length due to an ultrahigh resolution of the optical readout means and, therefore a high signal-to-noise ratio can be achieved. [less ▲]

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See detailLogistique durable
Nondonfaz, Robert ULg; Arda, Yasemin ULg

Article for general public (2008)

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See detailS13.45 Chlamydomonas reinhardtii mitoproteome adaptation in response to inactivation of the energy-dissipating alternative oxidase 1 by RNA interference
Cloes, Marie ULg; Mathy, Grégory ULg; Cardol, Pierre ULg et al

in Biochimica et Biophysica Acta (BBA) - Bioenergetics, Volume 1777, Supplement 1, 19 July 2008, Page S99 (2008, July 18), 1777(Supplement 1), 99

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See detailThe JWST MIRI Double-Prism, Design and Science Drivers
Fisher, Sebastian; Rossi, Laurence ULg; Renotte, Etienne ULg et al

in Proceedings of SPIE (2008, July 12), 7010

We present how it is achieved to mount a double prism in the filter wheel of MIRIM - the imager of JWST’s Mid Infrared Instrument. In order to cope with the extreme conditions of the prisms’ surroundings ... [more ▼]

We present how it is achieved to mount a double prism in the filter wheel of MIRIM - the imager of JWST’s Mid Infrared Instrument. In order to cope with the extreme conditions of the prisms’ surroundings, the low resolution double prism assembly (LRSDPA) design makes high demands on manufacturing accuracy. The design and the manufacturing of the mechanical parts are presented here, while ’Manufacturing and verification of ZnS and Ge prisms for the JWST MIRI imager’ are described in a second paper [1]. We also give insights on the astronomical possibilities of a sensitive MIR spectrometer. Low resolution prism spectroscopy in the wavelength range from 5-10 microns will allow to spectroscopically determine redshifts of objects close to/at the re-ionization phase of the universe. [less ▲]

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See detailEvaluation of the treatment of septic arthritis by arthrotomy in calves
Sartelet, Arnaud ULg; Touati, Kamal ULg

Conference (2008, July 10)

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See detailWhole blood viscosity and viscoelasticity in healthy dairy cows
Sandersen, Charlotte ULg; Dringenberg, B.; Vandeputte, Sébastien ULg et al

Poster (2008, July 10)

Detailed reference viewed: 52 (11 ULg)