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See detailThe FLC-dependent vernalization pathway in Sinapis alba.
D'Aloia, Maria ULg; Tocquin, Pierre ULg; Périlleux, Claire ULg

in Comparative Biochemistry and Physiology. Part A, Physiology (2006), 143A

In many plants, flowering is promoted by a long exposure to cold, a process known as ‘vernalisation’. In Arabidopsis, the vernalisation pathway was shown to promote flowering via the repression of the ... [more ▼]

In many plants, flowering is promoted by a long exposure to cold, a process known as ‘vernalisation’. In Arabidopsis, the vernalisation pathway was shown to promote flowering via the repression of the FLOWERING LOCUS C (FLC) gene, which encodes a repressor of flowering. As far as we know, the genetical control of flowering is conserved among Brassicaceae, and we reported elsewhere cloning of flowering times genes of the photoperiodic pathway in Sinapis alba, based on sequence similarity with Arabidopsis. However, little is known about vernalisation in Sinapis. We therefore undertook a physiological and molecular study of this process. Plants of Sinapis were grown in non inductive short days and vernalised at 7°C, at the seedling stage. Vernalisation was found to accelerate flowering and an increasing effect was observed for vernalisation treatments longer than 2 weeks. We cloned an FLC-like sequence (SaFLC) by screening a cDNA library, and used it as a probe to perform expression analyses. We observed that SaFLC was almost completely repressed after 1 week of vernalisation, but repression was stable only after 2 weeks, which is consistent with the fact that 2-week is the minimal duration of vernalisation that promotes flowering. Hence the molecular mechanisms of vernalisation seem to be conserved in Sinapis and Arabidopsis. [less ▲]

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See detailExperimental evaluation of a spray drift Gaussian tilting plume model.
Stainier, Charles; Robaye, Vincent ULg; Destain, Marie-France ULg et al

in Aspects of Applied Biology (2006), 77(2), 365-370

This paper evaluates the application of a Gaussian tilting plume model to study agricultural spraying drift. The spray drift deposit of each droplet diameter class, measured by a laser particle analyser ... [more ▼]

This paper evaluates the application of a Gaussian tilting plume model to study agricultural spraying drift. The spray drift deposit of each droplet diameter class, measured by a laser particle analyser, is computed independently and summed to give footprint results for different nozzle. The methodology is used to model the drift from a fiat fan nozzle operating in a wind tunnel. Discrepancies with experimental data and the potential for further improvement of this approach are discussed. [less ▲]

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See detailEngagement et contre-engagement. Des politiques de la littérature
Denis, Benoît ULg

in Kaempfer, Jean-Marie; Florey, Sonya; Meizoz, Jérôme (Eds.) Formes de l'engagement littéraire (XVe-XXIe siècles) (2006)

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See detailL’évolution du droit des étrangers
Carlier, Jean-Yves ULg

in Khader, Bichara; Martiniello, Marco; Rea, Andrea (Eds.) et al Penser l’immigration et l’intégration autrement (2006)

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See detailAlimenter le lien entre consommateurs, éleveurs et animaux.
Lamine Claire; Stassart, Pierre M ULg; Bartiaux, Nicole et al

Report (2006)

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See detailEffect Of The Antibiotic Azithromycin On Thermotropic Behavior Of Dopc Or Dppc Bilayers
Fa, N.; Ronkart, Sébastien ULg; Schanck, A. et al

in Chemistry and Physics of Lipids (2006), 144(1),

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See detailMurine gammaherpesvirus-68 glycoprotein H-glycoprotein L complex is a major target for neutralizing monoclonal antibodies.
Gill, Michael B.; Gillet, Laurent ULg; Colaco, Susanna et al

in Journal of General Virology (The) (2006), 87(Pt 6), 1465-75

Herpesviruses characteristically persist in immune hosts as latent genomes, but to transmit infection they must reactivate and replicate lytically. The interaction between newly formed virions and pre ... [more ▼]

Herpesviruses characteristically persist in immune hosts as latent genomes, but to transmit infection they must reactivate and replicate lytically. The interaction between newly formed virions and pre-existing antibody is therefore likely to be a crucial determinant of viral fitness. Murine gammaherpesvirus-68 (MHV-68) behaves as a natural pathogen of conventional, inbred mice and consequently allows such interactions to be analysed experimentally in a relatively realistic setting. Here, monoclonal antibodies (mAbs) were derived from MHV-68-infected mice and all those recognizing infected-cell surfaces were tested for their capacity to neutralize MHV-68 virions. All of the neutralizing mAbs identified were specific for the viral glycoprotein H (gH)-gL heterodimer and required both gH and gL to reproduce their cognate epitopes. Based on antibody interference, there appeared to be two major neutralization epitopes on gH-gL. Analysis of a representative mAb indicated that it blocked infection at a post-binding step--either virion endocytosis or membrane fusion. [less ▲]

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See detailDroplet Size Spectra And Drift Effect Of Two Phenmedipham Formulations And Four Adjuvants Mixtures
Stainier, C.; Destain, Marie-France ULg; Schiffers, Bruno ULg et al

in Crop Protection (2006), 25(12),

Relative drift potential was evaluated for three types of hydraulic nozzles (a flat-fan nozzle, a hollow cone nozzle and an air induction nozzle) spraying different liquids: water, emulsifiable ... [more ▼]

Relative drift potential was evaluated for three types of hydraulic nozzles (a flat-fan nozzle, a hollow cone nozzle and an air induction nozzle) spraying different liquids: water, emulsifiable concentrate (EC) and suspension concentrate (SC) formulations of phenmedipham dispersed in water, with or without addition of 4 different tank-mix adjuvants. The droplet size spectra were measured for these 15 spray mixtures using a Malvern Particle Sizer and characterised by the Volume Median Diameter (VMD) and the percentage of liquid contained in droplets less than 100 m (% < 100 m). Horizontal ground drift was measured in a wind tunnel, on glass fibre collectors using a fluorescent tracer dye technique. The relative drift of each spray mixture was characterised by the Drifted Part (DP) which is the part of the sprayed volume drifted between 2 and 6 metres. Although the nozzle type was the predominating parameter regarding to the droplet size spectra and the DP, differences were observed due to the liquids characteristics. The EC formulation produced a smaller droplet size and a greater DP than the SC formulation whatever the tank mix adjuvant used. For the different spray mixtures, the DP was poorly correlated to the VMD or the % < 100 m. However, correlations between the VMD, the % < 100 m and the DP of the flat-fan nozzle and of the hollow cone nozzle were significant. This suggests that a reference nozzle could be used to estimate the drift potential of other nozzle with a similar liquid sheet break-up mechanism. [less ▲]

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See detailMarchés publics et paradigme concurrenciel: état du droit
Navez, Françoise ULg; Durviaux, Ann-Lawrence ULg

in Dossiers d'ASBL Actualités (Les) (2006), 2

Les pouvoirs adjudicateurs désirant avoir une consommation responsable, favorable au développement durable, hésitent souvent à insérer des considérations "autres que strictement économiques" dans leurs ... [more ▼]

Les pouvoirs adjudicateurs désirant avoir une consommation responsable, favorable au développement durable, hésitent souvent à insérer des considérations "autres que strictement économiques" dans leurs procédures d'achat et donc à valoriser les spécificités des entreprises d'économie sociale. Mais d'où vient cette hésitation? L'argument généralement avancé est le fait que l'insertion de considérations autres que strictement économiques va à l'encontre de la logique de marché imposée par la législation nationale, le droit communautaire ou encore l'Accord sur les marchés publics. L'exercice leur apparait dès lors difficile et périlleux. Qu'en est-il de l'état du droit aujourd'hui? [less ▲]

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See detailIntoxications au dextropropoxyphène et au tramadol: bilan d'un an de recueil
Cohen, Sabine; Manchon, Monique; Artur, Michèle et al

in Annales de Toxicologie Analytique (2006), 2

La prescription de plus en plus fréquente du dextropropoxyphène (DP) et du tramadol, deux antalgiques opioïdes, a conduit les membres du groupe de travail "Toxicologie hospitalière" de la Société ... [more ▼]

La prescription de plus en plus fréquente du dextropropoxyphène (DP) et du tramadol, deux antalgiques opioïdes, a conduit les membres du groupe de travail "Toxicologie hospitalière" de la Société Française de Toxicologie Analytique (SFTA) à étudier leur toxicité clinique observée. L'étude a consisté en l'analyse des cas où l'une ou l'autre de ces molécules a été identifiée au décours d'un screening toxicologique réalisé durant l'année 2004 dans les laboratoires hospitaliers des membres de ce groupe. Pour chaque patient ont été recueillis les données démographiques, les concentrations plasmatiques en dextropropoxyphène, norpropoxyphène (NP) ou tramadol, la concentration plasmatique en paracétamol, les médicaments associés et les signes cliniques (digestifs, respiratoires, cardiaques et neurologiques). Aucune relation entre les concentrations plasmatiques de dextropropoxyphène et de paracétamol, ni entre celles de dextropropoxyphène ou de tramadol et la gravité clinique n'a été observée. Les concentrations plasmatiques observées en dextropropoxyphène sont faibles mais doivent attirer l'attention sur une éventuelle intoxication au paracétamol. Les concentrations plasmatiques en tramadol peuvent être élevées mais les intoxications sont dans l'ensemble peu sévères et les concentrations toxiques semblent très supérieures à la concentration de 1 mg/L. [less ▲]

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See detailChemical Composition Of The Leaf Oil Of Mentha Rotundifolia (L.) From Algeria
Brada, M.; Bezzina, M.; Marlier, M. et al

in Journal of Essential Oil Research (2006), 18(6), 663-665

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See detailNormal and aberrant biological self-assembly: Insights from studies of human lysozyme and its amyloidogenic variants
Dumoulin, Mireille ULg; Kumita, Janet; Dobson, Christopher M

in Accounts of Chemical Research (2006), 39

Studies of lysozyme have played a major role over several decades in defining the general principles underlying protein structure, folding, and stability. Following the discovery some 10 years ago that ... [more ▼]

Studies of lysozyme have played a major role over several decades in defining the general principles underlying protein structure, folding, and stability. Following the discovery some 10 years ago that two mutational variants of lysozyme are associated with systemic amyloidosis, these studies have been extended to investigate the mechanism of amyloid fibril formation. This Account describes our present knowledge of lysozyme folding and misfolding, and how the latter can give rise to amyloid disease. It also discusses the significance of these studies for our general understanding of normal and aberrant protein folding in the context of human health and disease. [less ▲]

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See detail'Do plant species and climate warming influence nitrification and ammonia oxidiser community structure
Malchair, Sandrine ULg; Carnol, Monique ULg

in 11th International symposium on microbial ecology (ISME-11) 'The Hidden Powers – Microbial Communities in Action', Vienna, Austria, August 20-25, 2006, Book of Abstracts (2006)

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See detailBacteriocin Activity By Lactobacillus Curvatus Cwbi-B28 To Inactivate Listeria Monocytogenes In Cold-Smoked Salmon During 4 Degrees C Storage
Ghalfi, H.; Allaoui, A.; Destain, Jacqueline ULg et al

in Journal of Food Protection (2006), 69(5),

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See detailApplication Of The Hough Transform For Seed Row Localisation Using Machine Vision
Leemans, Vincent ULg; Destain, Marie-France ULg

in Biosystems Engineering (2006), 94(3),

This paper compares two methods based on machine vision to provide driver assistance in seed drill guidance in order to improve spacing accuracy during contiguous passages. The first case consisted of ... [more ▼]

This paper compares two methods based on machine vision to provide driver assistance in seed drill guidance in order to improve spacing accuracy during contiguous passages. The first case consisted of following the furrow created at the preceding passage by a special marker disc attached to the seed drill. A camera was located on the tractor and detected this furrow. In the second case, the seed rows themselves were detected by the camera without making use of the marker disc. In both cases, several video sequences were acquired in various situations, including different soil textures and various illumination conditions (375 sequences were acquired during three years). A pre-treatment of these sequences was performed and included a background subtraction in order to remove shadows and other wide unevenness. In the first case, the best results were obtained by using an image treatment based on the Hough transform coupled to a recursive filter. The search of the maximum of the Hough transform was performed using a mean shift algorithm. In the second case, where several parallel rows were simultaneously present on the images, an adapted Hough transform was proposed which took into account the a priori knowledge of the rows spacing. The trueness and precision in row detection were superior in the second case. The results are compatible with the application, since the trueness was smaller than 30 mm. This suggested that it can be possible to assist the manual guidance of a seed drill by an automatic system consisting in a camera detecting the seed rows. [less ▲]

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See detailCompte rendu de Sylvain ROUX, "La Recherche du principe chez Platon, Aristote et Plotin"
Gavray, Marc-Antoine ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (2006), 75

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See detailAntilisterial Bacteriocin-Producing Strain Of Lactobacillus Curvatus Cwbi-B28 As A Preservative Culture In Bacon Meat And Influence Of Fat And Nitrites On Bacteriocins Production And Activity
Ghalfi, H.; Kouakou, P.; Duroy, M. et al

in Food Science and Technology International (2006), 12(4),

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See detailQTL and candidate genes for fecundity in sows
Buske, Bernd ULg; Sternstein, Ina; Brockmann, Gudrun

in Animal Reproduction Science (2006), 95(3), 167-183

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See detailEssai de construction d'un dispositif d'ingénierie pédagogique facilitant l'autonomie et la motivation : l'expérience du PMTIC en Région wallonne de Belgique
Van de Poël, Jean-François ULg; Brundseaux, Marie-France ULg; Georges, François ULg et al

in Jean-Montcler, Gérard (Ed.) Faciliter les apprentissages autonomes (2006)

Le « Plan Mobilisateur TIC » (PMTIC) est né en 2002 de l'initiative de la Ministre wallonne de l'Emploi et de la Formation, Mme Marie Arena. Ce plan est destiné à sensibiliser et à former aux TIC une ... [more ▼]

Le « Plan Mobilisateur TIC » (PMTIC) est né en 2002 de l'initiative de la Ministre wallonne de l'Emploi et de la Formation, Mme Marie Arena. Ce plan est destiné à sensibiliser et à former aux TIC une partie du public des demandeurs d'emploi. Il s'inscrit dans la perspective du sommet de Lisbonne sur la société de la connaissance et dans le contrat d'avenir de la Région wallonne (2002).[...] Le Laboratoire de Soutien à l’Enseignement Télématique (LabSET) de l’Université de Liège s’est vu confier la coordination pédagogique des 109 opérateurs de formation retenus dans le cadre du PMTIC. Cette mission de coordination pédagogique recouvre des tâches nombreuses parmi lesquelles nous pouvons distinguer notamment un suivi sur le terrain des opérateurs, la mise en place de journées de formation continue des formateurs et le développement de modules de formation disponibles en ligne pour les stagiaires. [less ▲]

Detailed reference viewed: 66 (14 ULg)