References of "2011"
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See detailProduction et commerce mondial en céréales en 2010/2011
Burny, Philippe ULg

in De Proft, M.; Bodson, B. (Eds.) Livre blanc "Céréales-Gembloux", édition février 2011 (2011)

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See detailSimulations numériques de figures de diffractions à l'usage de la sixième secondaire et du premier baccalauréat
Leblanc, Christophe ULg

in Bulletin de l'Association Belge des Professeurs de Physique et de Chimie [Bulletins de l'ABPPC] (2011), 49(190),

La diffraction constitue de nos jours un phénomène physique incontournable pour la recherche (diffraction par rayons X, diffraction de neutrons, cristallographie, ...) et est, à juste titre, enseignée ... [more ▼]

La diffraction constitue de nos jours un phénomène physique incontournable pour la recherche (diffraction par rayons X, diffraction de neutrons, cristallographie, ...) et est, à juste titre, enseignée aussi bien en dernière année de secondaire qu'à l'université. Le logiciel présenté ci-dessous est un programme permettant de réaliser des figures de diffractions de manière simple et intuitive. Il existe naturellement déjà de nombreux programmes de simulations de figures de diffractions que l'on peut facilement trouver sur internet. Cependant ceux-ci sont, pour la plupart, ou bien limités (à la connaissance de l'auteur) à quelques cas particuliers - diffractions sur une ou plusieurs fentes, un rond, plus rarement un carré - ou bien complexes à l'utilisation. Bien que ces programmes soient dignes d'intérêts et peuvent se montrer utiles dans le cadre d'un enseignement, leurs limitations empêchent d'acquérir une intuition réelle de ce qu'est la diffraction. Par exemple, quelle est la figure de diffraction obtenue par un réseau cristallin cubique, un réseau hexagonal, ou encore une hélice ? C'est précisément cette faille pédagogique que vient combler le logiciel présenté ci-dessous. En effet, celui-ci permet d'obtenir la figure de diffraction de « n'importe quelle forme » (en deux dimensions), « forme » entièrement paramétrable par l'utilisateur au moyen d'un simple fichier bitmap ; format de fichier graphique le plus répandu et le plus simple à employer. Il est naturellement également possible d'effectuer de la diffraction de manière expérimentale au moyen d'un simple laser hélium-néon (facilement accessible dans le commerce et d'un prix modéré) et de diapositives. Cependant, outre que le logiciel présenté ci-dessous peut-être obtenu gratuitement par simple demande à l'auteur, celui-ci se montre beaucoup plus souple d'utilisation que de simples diapositives car entièrement paramétrable, et, comme tout logiciel, échappe aux aléas expérimentaux (poussières sur les diapositives, problèmes d'alignements diapositives-laser, nécessité d'un local sombre, ...) [less ▲]

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See detailThe Producerist Narrative in Right-wing Flanders
Jamin, Jérôme ULg

Conference (2011)

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See detailDescription of the bone-remodeling pattern after socket preservation procedures in human: a methodological study
LAMBERT, France ULg; VINCENT, Kim ULg; VANHOUTTE, Vanessa ULg et al

Poster (2011)

Background: The bone remodeling after tooth extraction can result in the loss of as much as 50% of the buccal wall and a global crestal reduction in width of 3.87mm according to a recent systematic review ... [more ▼]

Background: The bone remodeling after tooth extraction can result in the loss of as much as 50% of the buccal wall and a global crestal reduction in width of 3.87mm according to a recent systematic review. Multiple surgical protocols using biomaterials are proposed in order to limit the typical postextraction bone resorption. However, because of the heterogeneity of the studies and, more specifically, of the assessment methods, it is difficult to assert the superiority of one technique over another. Aim: The objective of this study was to develop a new radiographic method to assess alveolar bone remodeling after socket preservation procedures. Methods: Sixteen extraction sites (in 14 patients) localized in the upper anterior maxilla were treated with bovine hydroxyapatite (0.25–1mm particles) and a saddled connective tissue graft. A radiographic 3-dimensional assessment of the hard tissues was performed at baseline and at 3 months after the procedure. Standardized horizontal measurements were taken at three corono apical levels ( 2, 5, and 9mm) and at three mesio-diatal level (Mesial, Center, and Distal) in the buccal and palatal aspects. Vertical measurements were also recorded in nine regions over the top of the alveolar crest. Results: Extraction socket-preservation technique assessed in the present study significantly reduced horizontal bone remodeling. The horizontal dimension of the crest decreased by 1.6mm (20%) in the cervical regions ( 2mm level), experienced a moderate decrease of 1mm (12%) at the 5mm level, and experienced a very low decrease of 0.5mm(6%) in the apical ( 8mm) level. The losses were always significantly higher in the buccal than in the palatal aspect. Buccally, the maximal bone remodeling at the cervical level remained below 1mm. Vertical bone resorption was homogeneous and was < 1mm in the nine measured regions. Conclusions and clinical implications: The radiographic measuring methodology proved to be accurate and reproducible. It can be applied in other clinical settings. Moreover, the surgical procedure evaluated in the present study, significantly limits the postextraction buccal bone remodeling compared with the data found in the literature for untreated extraction socket in the aesthetic area. However, a complete inhibition of the bone remodeling was not reached and the authors suggest a surgical technique using a ‘‘saddled’’ connective tissue graft to thicken buccal soft tissue biotype and consequently compensate for cervical bone loss. [less ▲]

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See detailDroit patrimonial des couples
Leleu, Yves-Henri ULg

Book published by Anthémis (2011)

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See detailRobust maximum weighted independent-set problems on interval graphs
Talla Nobibon, Fabrice ULg; Leus, Roel

Report (2011)

We study the maximum weighted independent-set problem on interval graphs with uncertainty on the vertex weights. We use the absolute robustness criterion and the min-max regret criterion to evaluate ... [more ▼]

We study the maximum weighted independent-set problem on interval graphs with uncertainty on the vertex weights. We use the absolute robustness criterion and the min-max regret criterion to evaluate solutions. For a discrete scenario set, we nd that the problem is NP-hard for each of the robustness criteria; we also provide pseudo-polynomial time algorithms when there is a constant number of scenarios and show that the problem is strongly NP-hard when the set of scenarios is unbounded. When the scenario set is a Cartesian product, we prove that the problem is equivalent to a maximum weighted independent-set problem on the same interval graph but without uncertainty for the rst objective function and that the scenario set can be reduced for the second objective function. [less ▲]

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See detailCompetitive facility location problem with attractiveness adjustment of the follower: A bilevel programming model and its solution
Kucukaydin, Hande ULg; Aras, Necati; Altinel, I. Kuban

in European Journal of Operational Research (2011), 208(3), 206-220

We are concerned with a problem in which a firm or franchise enters a market by locating new facilities where there are existing facilities belonging to a competitor. The firm aims at finding the location ... [more ▼]

We are concerned with a problem in which a firm or franchise enters a market by locating new facilities where there are existing facilities belonging to a competitor. The firm aims at finding the location and attractiveness of each facility to be opened so as to maximize its profit. The competitor, on the other hand, can react by adjusting the attractiveness of its existing facilities with the objective of maximizing its own profit. The demand is assumed to be aggregated at certain points in the plane and the facilities of the firm can be located at predetermined candidate sites. We employ Huff's gravity-based rule in modeling the behavior of the customers where the fraction of customers at a demand point that visit a certain facility is proportional to the facility attractiveness and inversely proportional to the distance between the facility site and demand point. We formulate a bilevel mixed-integer nonlinear programming model where the firm entering the market is the leader and the competitor is the follower. In order to find the optimal solution of this model, we convert it into an equivalent one-level mixed-integer nonlinear program so that it can be solved by global optimization methods. Apart from reporting computational results obtained on a set of randomly generated instances, we also compute the benefit the leader firm derives from anticipating the competitor's reaction of adjusting the attractiveness levels of its facilities. The results on the test instances indicate that the benefit is 58.33% on the average. [less ▲]

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See detailCoordination of verbal dependents in Old French : Coordination as a specified juxtaposition or apposition
Mazziotta, Nicolas ULg

in Gerdes, Kim; Hajičova, Eva; Wanner, Leo (Eds.) Proceedings of Depling 2011, International Conference on Dependency Linguistics, Barcelona (2011)

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See detailA mechanistic basis for potent, glycoprotein B-directed gammaherpesvirus neutralization.
Glauser, Daniel L; Kratz, Anne*-Sophie; Gillet, Laurent ULg et al

in Journal of General Virology (The) (2011), 92(Pt 9), 2020-33

Glycoprotein B (gB) is a conserved, essential component of gammaherpes virions and so potentially vulnerable to neutralization. However, few good gB-specific neutralizing antibodies have been identified ... [more ▼]

Glycoprotein B (gB) is a conserved, essential component of gammaherpes virions and so potentially vulnerable to neutralization. However, few good gB-specific neutralizing antibodies have been identified. Here, we show that murid herpesvirus 4 is strongly neutralized by mAbs that recognize an epitope close to one of the gB fusion loops. Antibody binding did not stop gB interacting with its cellular ligands or initiating its fusion-associated conformation change, but did stop gB resolving stably to its post-fusion form, and so blocked membrane fusion to leave virions stranded in late endosomes. The conservation of gB makes this mechanism a possible general route to gammaherpesvirus neutralization. [less ▲]

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See detail1D numerical modeling of the flow over a Piano Key Weir
Erpicum, Sébastien ULg; Machiels, Olivier ULg; Archambeau, Pierre ULg et al

in Erpicum, Sébastien; Laugier, Frédéric; Boillat, Jean Louis (Eds.) et al Labyrinth and Piano Key Weirs - PKW 2011 (2011)

Because of the PK-Weir geometric specificities, its hydraulic capacity remains difficult to predict without using experimental techniques. A 1D numerical model of the flow over a PK-Weir has been ... [more ▼]

Because of the PK-Weir geometric specificities, its hydraulic capacity remains difficult to predict without using experimental techniques. A 1D numerical model of the flow over a PK-Weir has been developed at the Research unit HACH at the University of Liege. It is based on a 1D modeling of the inlet and the outlet separately, with a single upstream reservoir and interactions between both flows by exchange of mass and momentum along the lateral crest. The comparison of the numerical results with various experimental data showed the ability of the numerical model to predict with reasonable accuracy the release capacity of a PK-Weir, whatever its geometry. The tests of the solver enable to highlight the significant influence of the inlet and outlet width on the weir release capacity. They also suggest that improvements of the numerical model may lie in the evaluation of the discharge coefficient of the lateral crest. [less ▲]

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See detailZinc complexes with 1,2,4-triazole functionalized amino acid derivatives: Synthesis, structure and b-lactamase assay
Naik, Anil; Beck, Joséphine; Dîrtu, Marinela et al

in Inorganica Chimica Acta (2011), 368

Coordinating abilities of 4R-1,2,4-triazole derivatives (R = glycine ethyl ester (L1), glycine (L2), diethylamino malonate (L3), methionine (L4) and diethyl aminomethylphosphonate (L5)) towards ZnII ions ... [more ▼]

Coordinating abilities of 4R-1,2,4-triazole derivatives (R = glycine ethyl ester (L1), glycine (L2), diethylamino malonate (L3), methionine (L4) and diethyl aminomethylphosphonate (L5)) towards ZnII ions have been studied in solution, in solid state and versus three zinc-b-lactamases. The crystal structure of [Zn3(L4)6(H2O)6] (6) is described; it is the first crystal structure involving a 1,2,4-triazole functionalized methionine. It forms a trinuclear complex with central zinc octahedrally coordinated by only L4, whereas terminal zinc ions coordination sphere is completed by three water molecules. L4 exhibits a dual functionality of a bridging bidentate ligand as well as an anion. A dense hydrogen bonding network connects these trinuclear entity into a 3D supramolecular network. The ZnII ions in 6 are held at equidistance (3.848 Å) which coincidently matches with the corresponding Zn Zn distance in the binuclear zinc enzyme from Bacillus cereus (3.848 and 4.365 Å). Among L1–L5 screened for b-lactamase assay, L4 shows modest inhibition for BcII enzyme. [less ▲]

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See detailTechniques de séchage des starters lactiques et mécanismes affectant la viabilité cellulaire suite à la lyophilisation
Coulibaly, Ibourahema ULg; Dubois Dauphin, Robin ULg; Danthine, Sabine ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2011), 15(2), 287-299

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See detailQuantitative food webs of herbivore and related beneficial community in non–crop and crop habitats
Alhmedi, Ammar; Haubruge, Eric ULg; D’Hoedt, Sandrine et al

in Biological Control (2011), 58

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See detailOptimal linear taxation under endogenous longevity
Pestieau, Pierre ULg; Leroux, ML; Ponthiere, Gregory

in Journal of Population Economics (2011), 24

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See detailAntibody production by injection of living cells expressing non self antigens as cell surface type II transmembrane fusion protein.
Nizet, Yannick; Gillet, Laurent ULg; SCHROEDER, Hélène ULg et al

in Journal of immunological methods (2011)

Antigen expression and purification are laborious, time consuming and frequently difficult steps in the process of antibody production. In the present study, we developed a method avoiding these two steps ... [more ▼]

Antigen expression and purification are laborious, time consuming and frequently difficult steps in the process of antibody production. In the present study, we developed a method avoiding these two steps. This method relies on the injection of histocompatible living cells stably expressing the antigen as a cell surface type II transmembrane fusion protein. A vector, nicknamed pCD1-CD134L, was constructed to express the antigen fused at the carboxyterminal end of the human CD134 ligand (CD134L) type II transmembrane protein on the surface of eucaryotic cells. This vector was shown to induce cell surface expression of epitopes from human c-Myc (soluble protein), uterogloblin-related protein 1 (secreted protein) and CD94 (type II transmembrane protein). Using this vector, we developed a method to produce antibodies without antigen production. The flowchart of this method is as follows: (i) cloning of the antigen in the pCD1-CD134L vector; (ii) production of a histocompatible cell line stably expressing the CD134L-antigen fusion protein; (iii) testing for cell surface expression of the fusion protein by targeting the CD134L carrier; and (iv) prime-boost immunisation with living cells expressing the fusion protein. This method was successfully used for production of polyclonal antibodies raised against Ixodes ricinus calreticulin (secreted protein) in mice and for production of monoclonal antibodies raised against an epitope of Vaccinia virus A56 (type I transmembrane protein) protein in rat. The present study is the first to demonstrate the use of a type II transmembrane protein as a carrier for cell surface display of antigens. [less ▲]

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See detailChlamydomonas can play a role in the study of a heteroplasmic human mitochondrial mutation
Larosa, Véronique ULg; Coosemans, Nadine ULg; Bonnefoy, Nathalie et al

Scientific conference (2011)

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See detailComparison of phenotypic and genotypic tropism determination in triple-class-experienced HIV patients eligible for maraviroc treatment.
Vandekerckhove, Linos; Verhofstede, Chris; Demecheleer, Els et al

in Journal of Antimicrobial Chemotherapy (2011), 66(2), 265-72

BACKGROUND: Determination of HIV-1 tropism is a pre-requisite to the use of CCR5 antagonists. This study evaluated the potential of population genotypic tropism tests (GTTs) in clinical practice, and the ... [more ▼]

BACKGROUND: Determination of HIV-1 tropism is a pre-requisite to the use of CCR5 antagonists. This study evaluated the potential of population genotypic tropism tests (GTTs) in clinical practice, and the correlation with phenotypic tropism tests (PTTs) in patients accessing routine HIV care. METHODS: Forty-nine consecutive plasma samples for which an original Trofile(TM) assay was performed were obtained from triple-class-experienced patients in need of a therapy change. Viral tropism was defined as the consensus of three or more tropism calls obtained from the combination of two independent population PTT assays (Trofile Biosciences, San Francisco, CA, USA, and Virco, Beerse, Belgium), population GTTs and GTTs based on ultra-deep sequencing. If no consensus was reached, a clonal PTT was performed in order to finalize the tropism call. This two-step approach allowed the definition of a reference tropism call. RESULTS: According to the reference tropism result, 35/49 samples were CCR5 tropic (R5) (patients eligible for maraviroc treatment) and 14/49 were assigned as non-R5 tropic. The non-R5 samples [patients not eligible for maraviroc treatment according to the FDA/European Medicines Agency (EMEA) label] group included both the CXCR4 (X4) samples and the dual and mixed CCR5/CXCR4 (R5/X4) samples. Compared with Trofile(TM) population PTTs, population GTTs showed a higher sensitivity (97%) and a higher negative predictive value (91%), but almost equal specificity and an equal positive predictive value. CONCLUSIONS: In line with recent reports from clinical trial data, our data support the use of population genotypic tropism testing as a tool for tropism determination before the start of maraviroc. [less ▲]

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See detailSentiment d’altérité dans la correspondance de Rousseau en 1762
Biquet, Stéphanie ULg

in Turekova, Andrea (Ed.) Conférence internationale Autre - Autrui - Altérité (2011)

Jean-Jacques Rousseau est né avec la conscience de son altérité : fils d’horloger, citoyen de Genève, il se sent dès son plus jeune âge différent du monde qui l’entoure. Par sa « réforme » au début des ... [more ▼]

Jean-Jacques Rousseau est né avec la conscience de son altérité : fils d’horloger, citoyen de Genève, il se sent dès son plus jeune âge différent du monde qui l’entoure. Par sa « réforme » au début des années 1750, il transformera officiellement cette altérité en faire-valoir. Pourtant, quand résonne le glas de la condamnation de ses œuvres (Émile et le Contrat social) en 1762, l’homme jusque-là différent, se sent étranger, incompris, seul contre tous, comme en témoigne sa correspondance. Cet article se donne pour objectif d’étudier ce sentiment d’altérité et d’étrangeté à travers la correspondance personnelle de Jean-Jacques Rousseau de 1762 à 1765 (soit de la condamnation de l’Émile et du Contrat social jusqu'au départ pour l’Angleterre chez David Hume). [less ▲]

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