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See detailProgrammes et actions publiques pour stimuler l’innovation régionale dans la compétitivité mondiale
Doloreux, D.; Devillet, Guénaël ULg; Melançon, Y.

in Canadian Public Administration / Administration publique du Canada (2010), 53

Abstract: Theobjectiveofthisarticleistoanalysepublicinitiativestostimulateregional innovation in Walloon region in Belgium and in the Province of Quebec. The empirical analysis relies on the competitive ... [more ▼]

Abstract: Theobjectiveofthisarticleistoanalysepublicinitiativestostimulateregional innovation in Walloon region in Belgium and in the Province of Quebec. The empirical analysis relies on the competitive poles program in Walloon and on the ACCORD project (Action Concerte ́e de Coope ́ration Re ́gionale de De ́veloppement) in Quebec. The comparison will allow discussing the implementation and regional embedding of these programs and will reveal the similarities and the differences between the structure, the organization and the deployment of these strategies in the various regions targeted. [less ▲]

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See detailRelating Jupiter's auroral features to magnetospheric sources
Vogt, Marissa F.; Kivelson, Margaret G.; Khurana, Krishan K. et al

Poster (2010, December)

In order to understand the physical processes that produce the various auroral features we must first understand how the auroral emissions are linked to magnetospheric sources. However, magnetic mapping ... [more ▼]

In order to understand the physical processes that produce the various auroral features we must first understand how the auroral emissions are linked to magnetospheric sources. However, magnetic mapping of Jupiter’s polar auroral emissions to equatorial regions in which source currents are plausibly generated is highly uncertain because the available field models are inaccurate beyond ~30 Jovian radii. We have related auroral features to their magnetospheric sources through a flux equivalence calculation, where we require that the magnetic flux in some specified region at the equator equals the magnetic flux in the area to which it links in the ionosphere. This approach is preferred to tracing model field lines for mapping the auroral polar regions, because the latter method is inaccurate at large distances. Here we present our results, highlighting new mappings for the southern hemisphere, and will compare our mapping to auroral observations from both hemispheres. In particular we relate equatorial regions in which reconnection events have been identified with the locations of polar dawn spots and other possible auroral signatures of tail reconnection. We find that the mapping reproduces several other key auroral features. The polar auroral active region maps to just outside the dayside magnetopause, a region that we identify as the Jovian polar cusp. The polar auroral swirl region maps to open tail field lines and is interpreted as the Jovian polar cap. These interpretations are consistent with some earlier predictions based on auroral observations. We identify the boundary between open and closed flux in the ionosphere, which previously was not well defined. We show that the magnetic flux through the regions interpreted as the polar caps in both hemispheres closely matches the estimated flux through the tail lobe, consistent with the suggestion that this area maps to open field lines. [less ▲]

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See detailWhat can we learn from the auroral footprints of the Jovian moons? (Invited)
Bonfond, Bertrand ULg

Conference (2010, December)

The signature of electromagnetic interaction between the moons Io, Europa and Ganymede and the Jovian magnetosphere can be observed on Jupiter’s polar ionosphere in the form of auroral footprints. The ... [more ▼]

The signature of electromagnetic interaction between the moons Io, Europa and Ganymede and the Jovian magnetosphere can be observed on Jupiter’s polar ionosphere in the form of auroral footprints. The observation campaigns carried out during the past few years by the Hubble Space Telescope in the Far UV domain provided not only a high spatial and temporal resolution but also an unprecedented System III longitude coverage. Consequently, these recent observations of the morphology and the dynamics of the footprints proved to be very powerful tools to probe these interactions. For example, the locations of the satellite footprints have been used as a valuable constraint for building Jovian magnetic field models. Moreover, analysis of the multiplicity of the Io footprint spots as well as their relative motion lead to new conclusions on the electron acceleration processes. The altitude of the Io footprint has also been used to infer the typical energy of the impinging electrons. Finally, the study of the three-dimensional shape and of the brightness of the different sub-structures of the footprints provides important clues on the processes at play between Io and the Jovian ionosphere. On the theoretical side, considerable efforts have also been recently carried out in order to model the propagation of the Alfvén waves generated at Io and the subsequent acceleration of auroral electrons. Coupled with HST images, radio decametric measurements and in situ data from the Galileo spacecraft, these advances provide a brand new understanding of the satellite footprints. [less ▲]

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See detailConservation of endemic plants from the Katanga copper belt (DR Congo)
Lebrun, Julie ULg; Minengo Handjila, Guylain; Weiskopf, Thomas et al

Poster (2010, December)

The Katanga copper belt, where natural outcrops of copper-rich rocks are colonised by highly original plant communities, has been recognised as a hotspot for metallophyte species. The flora comprises more ... [more ▼]

The Katanga copper belt, where natural outcrops of copper-rich rocks are colonised by highly original plant communities, has been recognised as a hotspot for metallophyte species. The flora comprises more than 600 species from which 30 are endemics. These plants represent a valuable phytogenetic resource for revegetation and restoration programs, for the phytostabilisation and for the remediation of heavy metal pollutions. However, the flora of metalliferous soils is threatened by mining activities in Katanga. Actions aiming at preserving these species are therefore urgent. Since 2007, a unique conservation project has been launched by scientists supported by a mining company. The aim is to elaborate a program that allows biodiversity conservation while being compatible with mining activities. The project combines in-situ and ex-situ conservation strategies involving ecosystem reconstruction, species translocations, protected areas designation and the development of seed banks in Belgium and in Katanga. [less ▲]

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See detailS-automatic sets
Charlier, Emilie ULg

Scientific conference (2010, December)

In this talk, I will discuss some new properties of S-automatic sets. First I will show that a multidimensional set is S-automatic for all abstract numeration systems S if and only if it is 1-automatic ... [more ▼]

In this talk, I will discuss some new properties of S-automatic sets. First I will show that a multidimensional set is S-automatic for all abstract numeration systems S if and only if it is 1-automatic. This result is surprising in the following sense: the class of multidimensional 1-automatic sets is a strict subclass of that of semi-linear sets. Hence, this result is not a generalization of the well-known result in integer base numeration systems: a multidimensional set is b-automatic for all integer bases b ≥ 1 if and only if it is semi-linear. Second I will describe the possible behaviors of the nth -term of an S-automatic set, depending on the growth function (i.e., the number of words of length n) of the numeration language. [less ▲]

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See detailHealth CoP : communautés de pratique dans le domaine de la santé
Denis, Brigitte ULg; Snoeck, Céline ULg; Grana-Monteirin, Casto ULg

Report (2010)

Ce rapport (privé) décrit les actions menées dans le cadre du projet Health CoP. http://www.crifa.ulg.ac.be/projets/healthcop/

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See detailNo evidence of human papillomavirus DNA in breast carcinoma in Tunisian patients
Hachana, Mohamed Ridha ULg; Ziadi, Sonia; Amara, Khaled et al

in Breast (Edinburgh, Scotland ) (2010), 19(6), 541-544

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See detailActualités en droit judiciaire
Georges, Frédéric ULg; Boularbah, Hakim

Book published by Anthemis (2010)

Cet ouvrage contient : - une chronique dédiée aux questions de compétence, matérielle et territoriale, des cours et tribunaux ; - une chronique consacrée à la procédure civile (introduction de l’instance ... [more ▼]

Cet ouvrage contient : - une chronique dédiée aux questions de compétence, matérielle et territoriale, des cours et tribunaux ; - une chronique consacrée à la procédure civile (introduction de l’instance, mesures avant dire droit, mise en état et les conclusions, demandes incidentes, incidents et mesures d’instruction, office du juge et audience de plaidoiries, jugement et emploi des langues); - une chronique relative à la répétibilité des frais et honoraires d’avocat ; - une chronique consacrée aux voies de recours et en particulier à l'appel [less ▲]

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See detailDiet supplement effect based on cottonseed meal and Vitellaria paradoxa leaves on Borgou cows performance in rainy season
Chabi Toko, Roukayath ULg; DAHOUDA, Mahamadou; GBAGUIDI, Fernand et al

in International Journal of Biological and Chemical Sciences (2010), (4(6): 2427-2432),

An experiment was carried out to investigate the effect of supplementing lactating cows with cottonseed meal and Vitellaria paradoxa leaves in the rainy season on milk yield and content, cows daily weight ... [more ▼]

An experiment was carried out to investigate the effect of supplementing lactating cows with cottonseed meal and Vitellaria paradoxa leaves in the rainy season on milk yield and content, cows daily weight gain and profitability. The experimental design was 3 × 3 Latin square with 5 repetitions. Fifteen Borgou cows were offered three diets: grazing on natural pasture, grazing on pasture plus 1.5 kg of cottonseed meal supplement and grazing on natural pasture plus 500 g of Vitellaria paradoxa leaves. Daily milk yield was 946.58 g, 1690.07 g and 1176.89 g for the control, cottonseed meal and Vitellaria paradoxa leaves group respectively. Cows supplemented with cottonseed meal produce significantly (p < 0.05) more milk than the others. The mean values were 15.12%, 0.35%, 5.92% and 4.13% respectively for total solid, ash, fat and protein content. Vitellaria paradoxa leaves significantly (p < 0.05) increase total solid level and ash as well as ash with cottonseed meal. Furthermore, calves daily weight gain (DWG) was significantly different. A net return analysis shows that cottonseed meal and Vitellaria paradoxa leaves supplementation in rainy season was profitable even if Vitellaria paradoxa leaves were more beneficial. [less ▲]

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See detailAlternative photosynthetic electron pathways in different clades of Symbiodinium: the Mehler reaction
Roberty, Stéphane ULg; Poulicek, Mathieu ULg; Franck, Fabrice ULg

Poster (2010, December)

The high productivity of coral reef ecosystems is largely attributed to the mutualistic symbiosis between reef-building corals and their intracellular dinoflagellate in the genus Symbiodinium commonly ... [more ▼]

The high productivity of coral reef ecosystems is largely attributed to the mutualistic symbiosis between reef-building corals and their intracellular dinoflagellate in the genus Symbiodinium commonly referred to as zooxanthellae. These photosynthetic algae translocate a majority of their photosynthetically fixed carbon to the host and contribute greatly to their metabolic needs (Muscatine, 1990) and the calcification process (Gattuso, 1999). In the natural environment the holobiont have to cope with significant daily variations in light intensities that sometimes exceed Symbiodinium photosynthetic capacity. Fortunately, photosynthetic organisms possess regulatory features that help to ensure that high light intensities can be endured without the accumulation of photodamage. Thus, the regulation of photosynthesis can be viewed as a dynamic balance between photosynthetic efficiency (photochemical quenching) and photoprotection processes (i.e. non-photochemical quenching). Among them, the role of O2 as an alternative electron acceptor within the chloroplast could play a critical role (Ort & Baker, 2002). Under particular environmental conditions when sinks for photosynthetic electrons are scarce, the direct reduction of oxygen by the PSI could sustain significant levels of photosynthetic electron flux by initiating the ΔpH formation and of NPQ, regulating the ratio of ATP/NADPH to match the requirements of carbon reduction. However, this process leads to the formation of reactive oxygen species that are rapidly detoxified by superoxide dismutase and ascorbate peroxidase. An additional electron flux associated with this oxygen pathway is directed to the reduction of monodehydroascorbate (MDA), which is generated as a result of peroxide reduction by ascorbate (Asada, 2000). The present study aimed to highlight the existence of alternative photosynthetic electron pathways and more especially the Mehler ascorbate peroxidase pathway in different clades of Symbiodinium, cultivated at low and high light intensities. -Muscatine L (1990) The role of symbiotic algae in carbon and energy flux in reef corals. In: Dubinsky Z(ed) Ecosystems of the world: coral reefs. Elsevier, Amsterdam, pp 1-9. -Gattuso JP, Allemand D and M Frankignoulle (1999) Photosynthesis and calcification at cellular, organismal and community levels in coral reefs: A review on interactions and control by carbonate chemistry. American Zoologist 39(1): 160-183. -Ort, D. R. and N. R. Baker (2002). A photoprotective role for O2 as an alternative electron sink in photosynthesis? Current Opinion in Plant Biology 5(3): 193-198. -Asada, K. (2000) The water-water cycle as alternative photon and electron sinks. Philosophical Transactions of the Royal Society B-Biological Sciences 355(1402): 1419–1431. [less ▲]

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See detailUsing 3D to understand human motion
Schwartz, Cédric ULg; Forthomme, Bénédicte ULg; Bruls, Olivier ULg et al

Poster (2010, December)

The understanding and tracking of human motion has been a subject of interest in the scientific community for more than one century. The long history of human motion analysis comes from the large scope of ... [more ▼]

The understanding and tracking of human motion has been a subject of interest in the scientific community for more than one century. The long history of human motion analysis comes from the large scope of applications of such measurement that can be found in medicine, biomechanics, sport, ergonomics, and even civil engineering. More recently, those technologies have also been widely exploited for the development of animation movies and games. Needless to say, the techniques used one century ago significantly differ from those used today. This paper describes in a first part the evolution of the technological capabilities for motion analysis and the actual limitations. From this analysis and in a second part, we describe the experience related to the creation of a motion analysis laboratory at the University of Liège and show how such a platform could be the center of a multidisciplinary research and provide valuable information to various communities. [less ▲]

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See detailBientôt un code pénal social
Kefer, Fabienne ULg; Debauche, M.

in Droit pénal de l'entreprise (2010)

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See detailLa technique au quotidien. Poétique de la modernité industrielle dans les Physiologies
Stienon, Valérie ULg

in Romantisme (2010), 150(4), 11-21

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See detailFrom Metagenomes To Industrially Relevant Enzymes
Berlemont, Renaud ULg

Conference (2010, December)

Microorganisms living in extreme conditions have now been isolated from all type of extreme environments and numerous extremozymes originating from these organisms have been described and characterized ... [more ▼]

Microorganisms living in extreme conditions have now been isolated from all type of extreme environments and numerous extremozymes originating from these organisms have been described and characterized. Indeed, most of their potential resides in their enzymes. As stated by Huston in 2008 : “As environmental concerns arise, biological tools are increasingly replacing harsh chemical and physical means of processing materials and they even harbor promise for creating cost-effective sustainable energy sources. It is imperative that we continue investigating ways in which natural products can offer economical alternatives to traditional industrial processes”. In this context the search for valuable extremophiles and their integration in industrial processes will, without any doubt, fulfill these objectives in extending the use of microorganisms and of their products to unexpected transformations. Extensive investigations on extremophiles were therefore carried out for the reason that the large diversity of these organisms allowed to think that it is probably possible to find within them the appropriate isolate that produces the best possible product for a specific application. Of course these organisms have to be unravelled and their peculiarities sometimes render the culture conditions inappropriate. The recent emergence of the metagenomic approach has, however, modified the context and has now rendered possible the investigation of the world of non cultivable microorganisms. Indeed, recent advances of the metagenomic highlighted the underestimated gene diversity contained in environmental samples. In order to isolate new valuable cold adapted proteins, Antarctica soil metagenomic libraries were constructed and screened for various activities. Screenings were performed in industrially derived conditions, when feasible, and allowed the isolation of several new lipases/esterases, proteases, amylases, xylanases, … Hence, thorough characterization of the new enzymes is required prior their integration into industrial processes. We will discuss case-studies on three enzymes primarily isolated for the agro-food industry and displaying particular features. [less ▲]

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See detailMagnetic susceptibility correlation of km-thick Eifelian-Frasnian sections (Belgium-Czech Republic)
Boulvain, Frédéric ULg; Da Silva, Anne-Christine ULg; Mabille, Cedric et al

in Geologica Belgica (2010, December), 13(4), 5-7

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See detailLa lecture à 15 ans. Premiers résultats de PISA 2009
Baye, Ariane ULg; Demonty, Isabelle ULg; Lafontaine, Dominique ULg et al

in Cahiers des Sciences de l'Education (Les) (2010)

Detailed reference viewed: 148 (36 ULg)