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See detailAbout almost periodic sequences of integers and related concepts
Crama, Yves ULg

Scientific conference (2014, May 07)

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See detailCOMPARISON AND MOLECULAR CHARACTERIZATION OF ANIMAL AND HUMAN CLOSTRIDIUM DIFFICILE STRAINS
Rodriguez Diaz, Cristina ULg; Taminiau, Bernard ULg; Korsak Koulagenko, Nicolas ULg et al

Poster (2014, May 07)

The main objective of this study was to characterize and compare animal and human C. difficile strains with respect to the PCR-ribotype and the antibiotic resistance. Multilocus sequence typing analysis ... [more ▼]

The main objective of this study was to characterize and compare animal and human C. difficile strains with respect to the PCR-ribotype and the antibiotic resistance. Multilocus sequence typing analysis (MLST) was performed in order to study clonal relationships of the isolates. [less ▲]

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See detailContributions à l’amélioration des systèmes d’évaluations génétiques
Vanderick, Sylvie ULg; Gengler, Nicolas ULg

Conference given outside the academic context (2014)

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See detailL'Etat congolais souverain ou sous-tutelle? Essai d'analyse de la dynamique politique nationale.
Baenda Fimbo, Zacharie ULg

Scientific conference (2014, May 07)

Après la définition de certains concepts tels que l'Etat, la souveraineté et la tutelle, la présente communication a analysé la dynamique politique congolaise à travers l'histoire. De la première ... [more ▼]

Après la définition de certains concepts tels que l'Etat, la souveraineté et la tutelle, la présente communication a analysé la dynamique politique congolaise à travers l'histoire. De la première république à la troisième. Des interventions étrangères ayant divisé les leaders politiques congolais pendant la première législative à la présence quasi permanente de la Communauté internationale à travers la Mission des Nations Unies au Congo, en passant par la deuxième république de Mobutu, les réalités locales laissent voir que certaines décisions politiques, voire certaines prises de position sont dictées de l'étranger. Les faits analysés fait douter l'applicabilité de la notion de souveraineté à la gestion politique de l'Etat congolais. [less ▲]

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See detailPolitiques institutionelles et migrations. Quelle place les institutions belges laissent-elles à la diversité ?
Grandjean, Geoffrey ULg

Conference given outside the academic context (2014)

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See detailLa Cour européenne des droits de l'homme
Habran, Maxime ULg

Scientific conference (2014, May 07)

Cette conférence vise à mettre en perspective la liberté d'expression dans le cadre des arrêts de la CEDH

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See detailAvancées récentes dans l'investigation olfactive de la mort
Stefanuto, Pierre-Hugues ULg; Focant, Jean-François ULg

Scientific conference (2014, May 07)

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See detailÉcrire les «petites langues»: entre transparence et universalisme
Baiwir, Esther ULg

Conference (2014, May 06)

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See detailJustice environnementale et mobilisations environnementales locales
Lejeune, Zoé ULg

Scientific conference (2014, May 06)

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See detailNew perspectives on probabilistic methods for nonlinear transient dynamics in civil engineering
Canor, Thomas ULg

Doctoral thesis (2014)

The objective of this thesis is to develop probabilistic methods to perform nonlinear transient analysis in civil engineering applications. The manuscript is divided into two parts. For large-dimensional ... [more ▼]

The objective of this thesis is to develop probabilistic methods to perform nonlinear transient analysis in civil engineering applications. The manuscript is divided into two parts. For large-dimensional structures subject to coherent random loads, an asymptotic expansion-based method is used to improve linear evolutionary spectral analysis. Then, this method is extended to equivalent statistical linearization by a multiple timescales approach. The second part of the thesis is focused on small-dimensional systems. It explores the solution of the Fokker-Planck equation with the smoothed particle hydrodynamics method. This meshless Lagrangian method particularly ensures the conservation and the positivity of the probability field. The accuracy and efficiency of both approaches are compared with Monte-Carlo simulations. [less ▲]

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See detailNouvelle méthode de criblage de mutants respiratoires du complexe I chez Chlamydomonas
Massoz, Simon ULg; Larosa, véronique; bailleul, benjamin et al

Scientific conference (2014, May 06)

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See detailL'astaxanthine: de la biologie à l'industrie
Fratamico, Anthony ULg

Scientific conference (2014, May 06)

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See detailStudy of the microbial flora of steak tartare by metagenomic approach
Korsak Koulagenko, Nicolas ULg; Delhalle, Laurent ULg; Nezer, Carine et al

Poster (2014, May 06)

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See detailHas oxygen depletion an impact on nutrients and macrofauna in a highly dynamic macrophytodetritus accumulation?
Remy, François ULg; Mascart, Thibaud ULg; Dauby, Patrick ULg et al

Poster (2014, May 06)

Posidonia oceanica is an endemic Mediterranean highly productive seagrass. Depending on the ability of the primary consumers to digest it alive, a generally important part of its foliar primary production ... [more ▼]

Posidonia oceanica is an endemic Mediterranean highly productive seagrass. Depending on the ability of the primary consumers to digest it alive, a generally important part of its foliar primary production falls in autumn, to decay inside the meadow or to be exported to sand patches to form “exported litter accumulations”. These accumulations are highly dynamic depending on hydrodynamics and seafloor geomorphology. Literature says that low O2 conditions might occur inside litter accumulations, but the annual oxygen dynamics or its impact on the litter-associated macrofauna has never been measured. We focused on 2 exported litter accumulations in Calvi Bay (Corsica), during 2 years for a total of 8 seasons. For each season, we collected water samples (n=6) from 3 different strata: Water Column (WC), Water Just Above the litter (WJA) and Water Inside the litter (WI). Oxygen was measured for each replicate using a Winkler-based automated routine for oxygen concentration measurements on micro-volumes. At the same time, nutrients concentrations (PO4, NH4, and NO2+NO3) were measured in WC, WJA and WI, but also in the Interstitial Water (IW) using a spectrophotometric continuous flow analyzer (adapted for low nutrients level in an oligotrophic environment). In parallel, macrofaunal (size >500µm) samples (n=3-6) were also collected, counted and identified to the specific level. Our results show significant differences between O2 concentrations/saturation from WI and the two other strata. Significant differences were detected between seasons, sites and years for WI which is the only stratum where really low O2 conditions can be observed. Significant differences were also detected between seasons for both WC and WJA but no differences between sites and years. On the other hand no significant differences were detected between WC and WJA. A similar observation was made for the nutrients at the annual, seasonal and spatial level. Moreover differences are also observed between the nutrients themselves. Our data shows no correlation between WI O2 concentrations and saturation, and global macrofauna abundance or biodiversity. Results are more contrasting at an individual specific level for the 4 most dominant species. For two amphipod species, Gammarella fucicola (55% of the global abundance) and Gammarus aequicauda, no significant correlations were detected between their abundance and O2. For the leptostracan species, Nebalia strausi, a significant negative correlation with O2 concentration was detected. For the last amphipod species, Melita hergensis, a significant positive correlation was observed. Our analyses also show significant correlations between WI O2 concentration/saturation, and WI / IW nutrients concentration. To conclude, this work shows that WI is a very particular and dynamic environment considering O2 concentration and saturation. Low O2 conditions can be observed in WI but never in WC or WJA showing that internal processes and relations with the sediment determine the O2 dynamics in WI and showing a potential “barrier” effect between WI and WC. Moreover O2 dynamics and its consequences may play a role in the nutrients dynamics and cycles. It is clear that faunal responses to low O2 conditions are not identifiable at a global community level. At a specific level, we show a more complex situation: some species do not seem to be impacted by low O2 conditions, but some present a significant positive, or a significant negative response. This shows the existence and complexity of species-dependent low O2 tolerance/adaptation, and the importance of a specific level data analyses to detect responses of dominant litter associated macro- invertebrates to O2 concentration and saturation variations. [less ▲]

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See detailLa Spiruline : a star is born (a long time ago)
de Marchin, Thomas ULg

Scientific conference (2014, May 06)

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