References of "Scientific conferences in universities or research centers"
     in
Bookmark and Share    
Full Text
See detailEnquete militante ouvrière. Eléments de problématisation pour une analyse de la praxis collective
Cavazzini, Andrea ULg; Pihet Stéphane

Scientific conference (2011, September 24)

Detailed reference viewed: 19 (5 ULg)
Full Text
See detailValorisation des matériaux de construction en RD Congo:Aspects environnementaux et développement durable
Matamba Jibikila, Raphaël ULg; Wetshondo Osomba, Dominique ULg

Scientific conference (2011, September 23)

The exploitation of mineral resources other than building materials was for a long time the main business sector in RD-Congo. Further to the striking degradation of the road infrastructure and various ... [more ▼]

The exploitation of mineral resources other than building materials was for a long time the main business sector in RD-Congo. Further to the striking degradation of the road infrastructure and various architectural works, it turned out indispensable to investigate the various resources in building materials (abundant in the country), to characterize them in order to indicate the fields of appropriate applications. In this note, we are respectively interested in the carbonated and clayey materials of the regions of Mbuji-Mayi and Kinshasa. And we show the various valuations that meet the criteria of sustainable development. [less ▲]

Detailed reference viewed: 115 (10 ULg)
Full Text
See detailBreakdown points of the TCLUST procedure
Ruwet, Christel ULg

Scientific conference (2011, September 22)

The TCLUST procedure is a new robust clustering method introduced by García-Escudero et al. (2008). It performs clustering with the aim of finding clusters with different scatters and weights. As the ... [more ▼]

The TCLUST procedure is a new robust clustering method introduced by García-Escudero et al. (2008). It performs clustering with the aim of finding clusters with different scatters and weights. As the corresponding objective function can be unbounded, a restriction is added on the eigenvalues-ratio of the scatter matrices. The robustness of the method is guaranteed by allowing the trimming of a given proportion of observations. This trimming level has to be chosen by the practitioner, as well as the number of clusters. Suitable values for these parameters can be obtained throughout the careful examination of some classification trimmed likelihood curves (García-Escudero et al., 2010). The first part of this talk will consist of a brief presentation of this clustering procedure and the related R package (tclust). In the second part of the talk, the robustness of the TCLUST procedure, and more precisely its breakdown behavior, will be studied. We will see that the estimator of the scatter matrices can resist to more outliers than the number of trimmed observations. However, the brekdown point of estimator of the centers is very poor. Two observations are sufficient to make the centers break down. This is due to the stringency of the classical breakdown point; the estimator has to have a good behavior even on samples which can hardly be clustered. For this reason, Gallegos and Ritter (2005) introduced the restricted breakdown point. The idea is to restrict the analysis to the class of “well-separated” data sets. On this class, the estimator of the centers has a breakdown point of α, the level of trimming. [less ▲]

Detailed reference viewed: 20 (1 ULg)
See detailContribution of GC×GC TOFMS to tobacco analysis
Brokl, Michal ULg; Bishop, Louise; Wright, Christopher et al

Scientific conference (2011, September 21)

Detailed reference viewed: 8 (2 ULg)
Full Text
See detailHerstelrecht - Restorative Justice
Lauwaert, Katrien ULg

Scientific conference (2011, September 16)

Detailed reference viewed: 8 (2 ULg)
See detailControl in Biological Systems - from Intercellular Signalling to the Organism
Bullinger, Eric ULg

Scientific conference (2011, September 16)

Detailed reference viewed: 11 (0 ULg)
See detailWorkshop 24: Artistic Separation vs Mixing in multicultural cities
Martiniello, Marco ULg

Scientific conference (2011, September 07)

Detailed reference viewed: 10 (1 ULg)
See detailStructure spatiale et impact écologique des processus d'anthropisation des paysages terrestres: développement d'une instrumentation générique d'analyse
Vranken, Isabelle ULg

Scientific conference (2011, September 06)

The current project aims to develop a generic set of analysis methods to quantify anthropogenic degradation of tropical ecosystems. This will assist in landscape planning for ecosystem restoration and ... [more ▼]

The current project aims to develop a generic set of analysis methods to quantify anthropogenic degradation of tropical ecosystems. This will assist in landscape planning for ecosystem restoration and sustainable management of human impacts. Indeed, the analysis methods will enable to detect landscape degradation and its anthropogenic drivers based on their spatial properties, less complex or expensive to obtain than in-situ data. The project consists of two parts: - methodological research and development, based on principles landscape ecology and combined with other disciplines like remote sensing, geographic information systems, sociology and agronomy (in progress), - application of the developed pattern metrics on new study cases for evaluation and validation. Using study cases in tropical areas, the development of a typology enables to identify, classify and analyze degradation origin, its spatial properties and the ecosystems involved. The following pressures: woodcut for charcoal production, agricultural extension, mining activity and climate change have already been tested for the following natural ecosystems: rainforest, woodland, savannah. Afterwards, different metrics will be evaluated statistically with regard to their potential to capture anthropogenic effects. The Simpson diversity index, Largest Patch Index, fractal dimension and O'Neill disturbance index have already been tested and sometimes adapted. Critical thresholds will be defined in order to detect critical degradation levels of the terrestrial ecosystems. The best metrics will be calculated for new case(s) of anthropogenic impacts on landscapes (Cambodia?) in order to validate the correlation between metric outcomes and in situ observations. [less ▲]

Detailed reference viewed: 18 (5 ULg)
Full Text
See detailRobustesse des classifications obtenues par clustering
Ruwet, Christel ULg

Scientific conference (2011, September 02)

La différence entre les méthodes de classi cation et les méthodes de cluster- ing réside dans le fait que, en clustering, on ne dispose pas d'un échantillon de travail pour lequel l'appartenance à l'un ... [more ▼]

La différence entre les méthodes de classi cation et les méthodes de cluster- ing réside dans le fait que, en clustering, on ne dispose pas d'un échantillon de travail pour lequel l'appartenance à l'un des groupes est connue. Néanmoins, même lorsque l'on dispose de cette information, il est toujours possible d'appliquer une méthode de clustering aux données en oubliant les appartenances. On pour- rait alors s'attendre à une perte d'efficacité. Lors de ce séminaire, nous allons voir qu'en appliquant la méthode 2-means, il est possible de gagner de l'efficacité par rapport à certaines méthodes de classiffication lorsque la répartition des ob- servations est symétrique. A coté de cela, nous étudierons l'impact que l'introduction de contamina- tion dans les observations peut avoir sur la procèdure 2-means. Pour cela, nous utiliserons deux outils bien connus en statistique robuste : la fonction d'influence qui mesure l'impact d'une contamination infinitésimale en un point et le point de rupture qui mesure la quantité de contamination nécessaire pour déstabiliser complétement un estimateur. Nous verrons également d'autres procèdure de clustering plus résistante à la contamination, comme la méthode 2-means généralisée et la procèdure TCLUST. [less ▲]

Detailed reference viewed: 15 (5 ULg)
Full Text
See detailProjects in Fracture Simulations
Noels, Ludovic ULg; Becker, Gauthier; Wu, Ling ULg et al

Scientific conference (2011, September)

Detailed reference viewed: 9 (6 ULg)
Full Text
See detailThe size and book-to-market effects revisited
Lambert, Marie ULg; Hübner, Georges ULg

Scientific conference (2011, September)

Detailed reference viewed: 10 (0 ULg)
See detailLa validation de la DLUO
Chèné, Christine; Delacharlerie, Sophie ULg

Scientific conference (2011, September)

Detailed reference viewed: 20 (0 ULg)
Full Text
See detailLa spectroscopie Raman au service de l’archéométrie
Lepot, Laurent ULg

Scientific conference (2011, August 31)

La spectroscopie Raman est une technique particulièrement bien adaptée à l'analyse des oeuvres d'art et des pièces archéologiques. Cette présentation illustre, sans être exhaustive, plusieurs domaines d ... [more ▼]

La spectroscopie Raman est une technique particulièrement bien adaptée à l'analyse des oeuvres d'art et des pièces archéologiques. Cette présentation illustre, sans être exhaustive, plusieurs domaines d'application comme l'étude des pigments, des molécules organiques, des produits de corrosion et des minéraux et gemmes. Elle se focalise ensuite sur deux exemples détaillées concernant l'étude des peintures murales de la Cathédrale de Tournai et celle des restes colorés d'un insigne d'épaule retrouvé sur la dépouille d'un soldat australien de la première guerre mondiale. [less ▲]

Detailed reference viewed: 46 (1 ULg)
Full Text
See detailAbelian symmetries in NHDM
Keus, Venus ULg

Scientific conference (2011, August 27)

Detailed reference viewed: 2 (1 ULg)
Full Text
See detailMise en perspective et pistes de solutions pour rendre l'approche par compétences en langues étrangères plus équitable
Simons, Germain ULg

Scientific conference (2011, August 26)

Cette communication avait pour objectif de baliser l'atelier "langues modernes" organisé dans le cadre de l'Université d'été du Cifen 2011. Après avoir défini quelques termes-clés comme "compétences" et ... [more ▼]

Cette communication avait pour objectif de baliser l'atelier "langues modernes" organisé dans le cadre de l'Université d'été du Cifen 2011. Après avoir défini quelques termes-clés comme "compétences" et "approche par compétences", G. Simons a introduit la notion de risques d'inéquité liés à l'adoption de l'approche par compétences en langues. Enfin, quelques pistes de solutions ont été proposées aux niveaux macro, meso et micro pour tenter de réduire ces risques d'inéquité. [less ▲]

Detailed reference viewed: 26 (1 ULg)
See detailVHHs as structural probes to investigate the mechanis of fibril formation by the amyloidogenic variants of human lysozyme
Dumont, Janice; Kumita, Janet; Menzer, Linda et al

Scientific conference (2011, August 26)

Detailed reference viewed: 20 (0 ULg)
See detailIonic Liquids: Past, Present and Future
Robert, Thierry ULg

Scientific conference (2011, August 24)

Detailed reference viewed: 68 (6 ULg)
Full Text
See detailBasic use and programming in the R language
Magis, David ULg

Scientific conference (2011, August 22)

R is an open-source statistical software and of increasing interest for the scientific community. It can be installed on all usual platforms (Windows, Linux, Mac) and is suitable for many statistical ... [more ▼]

R is an open-source statistical software and of increasing interest for the scientific community. It can be installed on all usual platforms (Windows, Linux, Mac) and is suitable for many statistical analyzes, graphical representation, intensive computation and programming, among others. New functionalities and packages are developed regularly and the R web community ensures a constant development and increasing usefulness of R, not only for pure statisticians but also for practitioners from various fields (psychology, education, biometrics, econometrics, etc.). Its main drawback, however, is that it requires preliminary training and practice to handle the various aspects of the software and to become efficient in using R. The purpose of this workshop is to present the basic aspects of R, from the installation to the basic statistical analysis. The following themes will be developed: installation, importing data, R objects and structures, basic computations, graphics, packages and libraries, programming in R, basic statistical modeling and testing. The workshop will be practice-oriented, with sessions mixing both “theoretical” presentations and practical applications. Live demonstrations of R will also be performed. Participants are invited to bring their laptop and to take part to the practical exercises. Slides, R scripts and illustrative data sets will be provided. [less ▲]

Detailed reference viewed: 27 (8 ULg)
Full Text
See detailCIMEDE: a wood based industrialized system for housing, seeking after an ambitious environmental performance
Vierset, Martin ULg

Scientific conference (2011, August)

The project has three main objectives. The first objective is to design a method of construction wood that can be industrialized, so that the elements are then assembled on site. In this way, the ... [more ▼]

The project has three main objectives. The first objective is to design a method of construction wood that can be industrialized, so that the elements are then assembled on site. In this way, the manufacturing costs should be reduced. The second objective is to design a low energy house, whose consumption is less than an equivalent of 6 litres of oil per square meter per year (or 60 kWh/m²yr). The third objective is to employ less qualified workers in workshops or on site. Because the construction industry suffers from a shortage of workers, despite a high unemployment rate in our region. [less ▲]

Detailed reference viewed: 65 (13 ULg)
See detailHomogenization techniques in electromagnetics
Vazquez Sabariego, Ruth ULg

Scientific conference (2011, August)

Detailed reference viewed: 11 (1 ULg)
See detailGCxGC-HRTOFMS in POP Analyses
Brasseur, Catherine ULg; L'Homme, Benjamin ULg; Focant, Jean-François ULg

Scientific conference (2011, August)

Detailed reference viewed: 23 (4 ULg)
See detailAutomation for the Measurement of Selected PBDEs in Human Serum
Focant, Jean-François ULg

Scientific conference (2011, August)

Detailed reference viewed: 5 (2 ULg)
Full Text
See detailOrbits of language operations: finiteness and upper bounds
Charlier, Emilie ULg

Scientific conference (2011, August)

Detailed reference viewed: 7 (1 ULg)
Full Text
See detailUsing a DNA buiding code to manage the housing stock energy performance
Monfils, Stéphane ULg; Hauglustaine, Jean-Marie ULg

Scientific conference (2011, August)

The goal of this research is to qualify (and quantify) the Walloon residential building stock, in order to identify majority typologies which can be considered as representative of the Walloon dwelling ... [more ▼]

The goal of this research is to qualify (and quantify) the Walloon residential building stock, in order to identify majority typologies which can be considered as representative of the Walloon dwelling stock. This would therefore help us find potential improvement room, strategies of action when it comes to sustainable and large scale renovation of the described typologies. [less ▲]

Detailed reference viewed: 41 (12 ULg)
Full Text
See detailReflex: development of a decision help tool for residential renovation
Hauglustaine, Jean-Marie ULg; Monfils, Stéphane ULg

Scientific conference (2011, August)

In Belgium, like in many European countries, the existing buildings represent the main part of the building stock. These buildings are relatively old, and most of the dwellings are not at all or not well ... [more ▼]

In Belgium, like in many European countries, the existing buildings represent the main part of the building stock. These buildings are relatively old, and most of the dwellings are not at all or not well thermally insulated; their airtightness is weak and their heating installations are old. We can find there real potential improvement and high possibilities of renovation. The owner, the contractor and the architect are confronted with many renovation options, and choosing the best intervention scenarios is never easy. It’s in this context that the software REFLEX (for Rénovation EFficace d’un Logement EXistant, in English: efficient renovation of an existing dwelling) has been developed. [less ▲]

Detailed reference viewed: 53 (7 ULg)
See detailTax Evasion, Welfare Fraud, and "The Broken Windows" Effect: An Experiment in Belgium, France and the Netherlands
Lefebvre, Mathieu ULg

Scientific conference (2011, July 29)

In a series of experiments conducted in Belgium (Wallonia and Flanders), France and the Netherlands, we compare behavior regarding tax evasion and welfare dodging, with and without information about ... [more ▼]

In a series of experiments conducted in Belgium (Wallonia and Flanders), France and the Netherlands, we compare behavior regarding tax evasion and welfare dodging, with and without information about others’ behavior. Subjects have to decide between a ‘registered’ income, the realization of which will be known to the tax authority for sure, and an ‘unregistered’ income that will only be known with some probability. This unregistered income comes from self-employment in the Tax treatment and from black labor supplementing some unemployment compensation in the Welfare treatment. Subjects have then to decide on whether reporting their income or not, knowing the risk of detection. The results show that (i) individuals evade more in the Welfare treatment than in the Tax treatment; (ii) many subjects choose an option that allows for tax evasion or welfare fraud but report their income honestly anyway; (iii) examples of low compliance tend to increase tax evasion while examples of high compliance exert no influence; (iv) tax evasion is more frequent in France and the Netherlands; Walloons evade taxes less than the Flemish. There is no cross-country difference in welfare dodging. [less ▲]

Detailed reference viewed: 17 (1 ULg)
Full Text
See detailStudying the Fomalhaut debris disk with infrared interferometry
Absil, Olivier ULg

Scientific conference (2011, July 15)

In this talk, I will describe two recent studies carried out with infrared interferometry to characterise the planetary system around Fomalhaut, and its debris disk in particular. In the first study, we ... [more ▼]

In this talk, I will describe two recent studies carried out with infrared interferometry to characterise the planetary system around Fomalhaut, and its debris disk in particular. In the first study, we aimed to determine whether the debris disk is located within the equatorial plane of the stellar photosphere, in an attempt to improve our understanding of spin-orbit misalignements in planetary systems in general. We measured the orientation of the rotationnally-distorted stellar photosphere using micro-arcsecond precision VLTI/AMBER spectro-astrometry within the Br-gamma line. The derived poition angle is in perfect agreement with the position angle of the cold debris disk measured in visible and sub-millimeter images. We discuss the implications of this result on our understanding of the dust grain properties in the Fomalhaut disk. In the second study, we aimed at characterising the dust content of the innermost part of the debris disk. We used archival high-precision K-band visibility measurements with VLTI/VINCI and obtained N-band nulling observations with the Keck Interferometer Nuller. We report a significant excess emission at K band, and a marginal excess emission at N band, that we attempt to reproduce with a 2D debris disk model. A comprehensive Bayesian analysis of the main disk parameters is performed to derive most-probable values. Our analysis points towards a very compact ring of hot dust close to the sublimation radius as the origin of the reported excess emission. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Full Text
See detailStil und Stilisierung bei Joseph Roth. Conférence d'ouverture
Küpper, Achim ULg

Scientific conference (2011, July 15)

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailIdentidades en Bélgica
Jacquemain, Marc ULg

Scientific conference (2011, July 14)

Una historia paralela del movimiento flamenco y del movimiento walon desde 1815 para explicar a ensenantes y estudaintes peruanos la dialectica economica/cultural del antagonismo entre comunidades en ... [more ▼]

Una historia paralela del movimiento flamenco y del movimiento walon desde 1815 para explicar a ensenantes y estudaintes peruanos la dialectica economica/cultural del antagonismo entre comunidades en Belgica hasta la paralisis actual del gobierno federal y el posible estallamieto del pais. [less ▲]

Detailed reference viewed: 61 (8 ULg)
Full Text
See detailThéorie de l’argumentation I : Analyse d’une argumentation
Leclercq, Bruno ULg

Scientific conference (2011, July 11)

Detailed reference viewed: 10 (1 ULg)
Full Text
See detailThéorie de l’argumentation II : Evaluation d’une argumentation
Leclercq, Bruno ULg

Scientific conference (2011, July 11)

Detailed reference viewed: 16 (1 ULg)
Full Text
See detailTricks of Invention and Epistemological Uncertainty in Janet Frame's An Angel at My Table
Delrez, Marc ULg

Scientific conference (2011, July 08)

Detailed reference viewed: 24 (6 ULg)
See detailPharmacological management of orofacial pain
Chavarria Bolanos, Daniel ULg

Scientific conference (2011, July 08)

Detailed reference viewed: 1 (0 ULg)
Full Text
See detailHistoire des ouvrages religieux en béton en province de Liège: état des lieux et pathologies
Courard, Luc ULg; Gillard, Anne; Paquet, Pierre ULg

Scientific conference (2011, July 08)

Élément clé de l'évolution architecturale, le béton armé a participé à l'évolution de l'architecture religieuse catholique en particulier. Depuis sa découverte au XIXe siècle, ce matériau inventé ... [more ▼]

Élément clé de l'évolution architecturale, le béton armé a participé à l'évolution de l'architecture religieuse catholique en particulier. Depuis sa découverte au XIXe siècle, ce matériau inventé, économique et résistant au feu, a cependant montré ses limites: fissures, épaufrures, désintégration. Il paraît donc nécessaire de s'inquiéter de l'état actuel des églises, témoins de l'évolution architecturale, mais aussi points de repère d'un quartier ou d’un village. Dans l'arrondissement de Liège, neuf églises paroissiales en béton ont été identifiées. Pour chacune d'entre elles, une inspection visuelle a été menée. Cet examen visuel, qui ne constitue qu'une première étape dans une démarche de restauration ou de rénovation, a été précédé de recherches documentaires destinées à connaître l'histoire des églises et à ainsi mieux comprendre leur état. Cet article s'intéresse à une église de Liège, en particulier : l'église Saint-Vincent, située à l'entrée de la ville. Construite en vingt mois à peine, de 1928 à 1930, cet édifice monumental montre actuellement des épaufrures, des fissures et des traces d'humidité. L'inspection visuelle, ainsi que les essais en laboratoire et l'examen au radar qui ont suivi, ont permis d'émettre des hypothèses quant aux dégradations qui affectent cet édifice à la qualité architecturale reconnue. [less ▲]

Detailed reference viewed: 95 (6 ULg)
See detailStochastic Uncertainty Quantification of Eddy Currents in the Human Body by Polynomial Chaos Decomposition
Gaignaire, Roman; Scorretti, Riccardo; Vazquez Sabariego, Ruth ULg et al

Scientific conference (2011, July 07)

Detailed reference viewed: 14 (4 ULg)
See detailLa gestion intégrée des systèmes de production bananière
Lassois, Ludivine ULg

Scientific conference (2011, July)

Detailed reference viewed: 24 (9 ULg)
Full Text
See detailCIMEDE : Architectural modeler for modular industrial building system
Leclercq, Pierre ULg; Van de Vreken, Anne ULg; Lorquet, Cyril ULg et al

Scientific conference (2011, July)

The main scope of this applied research project was to implement a software platform able to efficiently assist the various stakeholders (architects, clients, process managers, builders, factory workers ... [more ▼]

The main scope of this applied research project was to implement a software platform able to efficiently assist the various stakeholders (architects, clients, process managers, builders, factory workers, etc.) involved in the life-cycle of CIMEDE housings. CIMEDE is an industrialized building system focused on modularity, sustainability and cost effectiveness. Our contribution consisted mostly in analyzing (ergonomics, UI, interactions) and implementing a bespoke 3D CAD modeler tailored to the CIMEDE industrialized building system and the specific needs of future users. [less ▲]

Detailed reference viewed: 47 (9 ULg)
See detailEthnic Diversity and Integration Policies in Belgium
Martiniello, Marco ULg

Scientific conference (2011, June 24)

Detailed reference viewed: 66 (4 ULg)
Full Text
See detailL'accompagnement sociologique de l'opération de rénovation de Droixhe
Frankignoulle, Pierre ULg

Scientific conference (2011, June 24)

Detailed reference viewed: 30 (8 ULg)
See detail« Social Mobility and Migration. Multidisciplinary Perspectives »
Martiniello, Marco ULg

Scientific conference (2011, June 21)

Detailed reference viewed: 16 (0 ULg)
See detailThe concept of Career in Ethnic and Migration Studies
Martiniello, Marco ULg

Scientific conference (2011, June 21)

Detailed reference viewed: 21 (1 ULg)
Full Text
See detailTransnational harmonisation of hydraulic models
Dewals, Benjamin ULg

Scientific conference (2011, June 20)

The AMICE project covers the whole river basin of river Meuse, which extends over parts of France, Belgium, The Netherlands, Germany as well as a small portion of Luxembourg. The goal of the project ... [more ▼]

The AMICE project covers the whole river basin of river Meuse, which extends over parts of France, Belgium, The Netherlands, Germany as well as a small portion of Luxembourg. The goal of the project consists in the development of a basin-wide coordinated strategy to cope with hydrological impacts of climate change, including floods and low flows. As this strategy is intended to be truly integrated at the scale of the international basin of river Meuse, the modelling tools used (e.g., hydraulic modelling, impact assessment, risk management) are also required to be consistent throughout the basin. However, so far, there are as many models and data sets as regions. Each region has developed its own climate scenarios, rainfall-runoff models and hydrological time series as well as its own procedures for hydraulic modelling and risk modelling. This calls definitely for a transnational harmonization effort, as presented here. [less ▲]

Detailed reference viewed: 28 (3 ULg)
See detailDialectique du banal et de l’imaginaire : le cas particulier de l’Univers carcéral
Englebert, Jérôme ULg

Scientific conference (2011, June 18)

Detailed reference viewed: 43 (7 ULg)
See detailGéographie et psychose : territoire et perte de corps commun
Englebert, Jérôme ULg

Scientific conference (2011, June 18)

Detailed reference viewed: 51 (18 ULg)
Full Text
See detailF-LARSP: une adaptation francophone du LARSP. Premières données
Maillart, Christelle ULg; Parisse, Christophe; Tommerdahl, Jodi

Scientific conference (2011, June 17)

Detailed reference viewed: 96 (5 ULg)
Full Text
See detailLe syndrome Thyro-Gastrique: de l’auto-immunité thyroïdienne aux tumeurs gastriques neuroendocriniennes.
VALDES SOCIN, Hernan Gonzalo ULg; BECKERS, Albert ULg

Scientific conference (2011, June 17)

THE THYRO-GASTRIC SYNDROME: FROM THYROID AUTOIMMUNITY TO NEUROENDOCRINE GASTRIC TUMORS. In 1849, Prof Addison described a fatal case of anemia, or anemia perniciosa. Dr Biermer expanded this original ... [more ▼]

THE THYRO-GASTRIC SYNDROME: FROM THYROID AUTOIMMUNITY TO NEUROENDOCRINE GASTRIC TUMORS. In 1849, Prof Addison described a fatal case of anemia, or anemia perniciosa. Dr Biermer expanded this original description in 1872. Nowadays, this pathological condition associating a megaloglastic anemia associated with a metabolic polyneuropathy is recognized as Biermer disease. Biermer anemia or anemia perniciosa and its associated polyneuropathy are the consequence of vitamine B12 malabsorption, due to autoimmune gastritis. Autoimmune gastritis is caused by lymphocitc infiltration and the generation of parietal gastric antibodies and intrinsic factor antibodies. Parietal gastric antibodies are cytotoxic: they specifically recognize the gastric proton pump, causing mucosal gastric atrophia and acloridia. This pathological condition can later degenerate into gastrin enterochromaffin cell hyperplasia , progressing to gastrin neuroendocrine tumors in nearly 10% of cases. In 1912 Dr Hakaru Hashimoto described the thyroid of four women affected by a struma lymphomatosa. This disease was later recognized as Hashimoto thyroiditis, being one of the most frequent causes of autoimmune hypothyroidism. Thyroid peroxodase (TPO) autoantibodies and lymphocytic infiltration are responsible for autoimmune thyroiditis and subsequent thyroid destruction. The thyrogastric syndrome was described in the seventies, in patients which the serum crossreacted both with parietal gastric antigens and thyroid TPO antigens. Whereas autoimmune polyendocrinopathies type 1 and 2 are rare, the real prevalence of the thyrogastric autoimmune syndrome is unknown. We conducted a prospective study to determine the prevalence of vitamine B12 malabsorption and gastric autoimmunity in patients with Hashimoto Thyroiditis seen in our clinical practice. A second end point of the study was to analyse gastric histological characteristics in such patients. A total of 240 consecutive patients with Hashimoto Thyroiditis were studied in our clinic from 2008 to 2009. Patients underwent TSH, FT4, FT3, ATPO, ATG, parietal cell autoantibodies (PCA), intrinsic factor antibodies (IFA), gastrine, vitamin B12 determinations and thyroid ultrasound. Patients with PCA and/or IFA were invited to have a gastric endoscopy and biopsies for histology and immunohistochemical studies. Patients with Hashimoto thyroiditis and gastric autoimmunity had a mean age of 52±19 years (28F/4M) at inclusion. Mean TSH was 21 ±28 µUI/ml (0.5-4) and 47% (15/32) of patients received levothyroxine treatment. Mean thyroid volume was 9.2±7 ml. Parietal cell autoantibodies were present in 13% (32/240). Intrinsic factor autoantibodies were found in 37.5% (6/16).In 3/6 patients with intrinsic factor antibodies we did not found PCA. Hypergastrinemia (>120 pg/ml) was present in 37 % (12/32) of patients with a mean of 323±507pg/ml. No patient had megaloblastic anemia, whereas only two patients had macrocytosis. Vitamine B12 was less than 200 pg/ml in 18% (6/32) of patients. A total of 59% (19/32) with PCA underwent a gastroscopy, with mucosal abnormalities in 79% (15/19) gastroscopies. Gastric and duodenal biopsies shown in 68% (13/19) histological signs of lymphocitosis infiltration, 42% (8/19) had signs of metaplasia and ECC hyperplasia and 21% (4/19) had signs of mucosal atrophy. Interestingly, H. pylori infection was found in 16% (3/19) of patients. No gastric carcinoid was found in this prospective series. In this oral presentation, we discuss the potential role of cross reacting epitopes between gastric proton pump ATP ase, thyroid autoantibodies and H pylori suggesting some physiopathological clues to explain this syndrome. Although the prevalence of the thyrogastric syndrome seems higher in our study, much of the previous studies were retrospective. Moreover, in these previous studies the physiopathological role of H pylori was not explored. Interestingly, in our experience, H. pylori can mimick gastric autoimmunity but this is reversible, after eradication. The high prevalence of autoimmune gastritis and vitamin B12 deficiency in this series provide a strong rationale for an early serologic screening and gastroscopic diagnosis in patients with Hashimoto's thyroiditis. The physiopathological model of the thyrogastric , or as already suggested gastro-thyroideal syndrome, shoud be revised in light of these new data. References H Valdes-Socin, L Lutteri, A Latta, L Vroonen, D Betea, P Petrossians, V Geenen, A Beckers. Prévalence de gastrite auto-immune et études histologiques dans une série prospective de 240 patients avec thyroïdite de Hashimoto. Abstract book. ENEA (Liège) 2010. H Valdes-Socin, L Lutteri, A Latta, L Vroonen, D Betea, P Petrossians, V Geenen, A Beckers. Prévalence de gastrite auto-immune et études histologiques dans une série prospective de 240 patients avec thyroïdite de Hashimoto. In XXVII Congrès de la SFE Abstract book. Annales d’Endocrinologie (Paris) 2010. H Valdes-Socin, A Beckers. Conférence pour médecins généralistes: «Le syndrome thyro-gastrique : de la carence en vitamine B12 aux tumeurs carcinoïdes de l’estomac». 18 mai 2011 à 20H00. Lieu : « Centre d’Endocrinologie d’Oupeye », Rue du Roi Albert, 261 – 4680 Oupeye. [less ▲]

Detailed reference viewed: 137 (24 ULg)
See detailAwans et Waroux. Guerre de Troie en Hesbaye ou rivalités familiales
Masson, Christophe ULg

Scientific conference (2011, June 16)

Detailed reference viewed: 47 (7 ULg)
Full Text
See detailModélisation numérique de l'expérience in situ SDZ
Pardoen, Benoît ULg; Charlier, Robert ULg; Radu, Jean-Pol ULg

Scientific conference (2011, June 16)

An in situ ventilation test (SDZ) is performed by the French national radioactive waste management agency (ANDRA) in the Meuse/Haute-Marne underground research laboratory. The aim is to characterise the ... [more ▼]

An in situ ventilation test (SDZ) is performed by the French national radioactive waste management agency (ANDRA) in the Meuse/Haute-Marne underground research laboratory. The aim is to characterise the effect of the desaturation and possible resaturation of the damaged zone located around an experimental gallery due to controlled ventilation imposed in this gallery. Hydro and hydro-mechanical numerical modellings are realised in order to acquire a better understanding of clayey rock behaviour and transfers occurring during the test. [less ▲]

Detailed reference viewed: 74 (35 ULg)
See detailData mining
Martin, Didier ULg

Scientific conference (2011, June 15)

Detailed reference viewed: 18 (1 ULg)
See detail"La problématique de la grammaire en didactique des langues"
Defays, Jean-Marc ULg

Scientific conference (2011, June 14)

Detailed reference viewed: 36 (0 ULg)
See detailLe volontariat: ses enjeux sociaux et sociétaux
Defourny, Jacques ULg

Scientific conference (2011, June 10)

Detailed reference viewed: 20 (2 ULg)
See detailLe vécu psychique de l’espace et du temps en prison
Englebert, Jérôme ULg

Scientific conference (2011, June 10)

Detailed reference viewed: 37 (12 ULg)
See detailRôles et adaptations des entreprises sociales
Mertens de Wilmars, Sybille ULg

Scientific conference (2011, June 09)

Detailed reference viewed: 16 (1 ULg)
Full Text
See detailKaiserschnitt beim Rind. Resultate einer internationalen Studie mit Beteiligung von gegen 700 Tierärzten
Hanzen, Christian ULg; Hirsbrunner Gaby

Scientific conference (2011, June 09)

Detailed reference viewed: 53 (3 ULg)
See detailLe secret des géants
Beckers, Albert ULg

Scientific conference (2011, June 09)

Detailed reference viewed: 11 (5 ULg)
See detailEpidemiologie et génétique des adénomes hypophysaires
Beckers, Albert ULg

Scientific conference (2011, June 09)

Detailed reference viewed: 18 (2 ULg)
See detailFinalité "management des entreprises sociales" dans un master en sciences de gestion
Mertens de Wilmars, Sybille ULg

Scientific conference (2011, June 08)

Detailed reference viewed: 20 (2 ULg)
See detailModels of co-production and social economy in service delivery in Europe
Defourny, Jacques ULg

Scientific conference (2011, June 08)

Detailed reference viewed: 19 (0 ULg)
Full Text
See detailLes agroressources
Joly, Guillaume; Paquot, Michel ULg

Scientific conference (2011, June 07)

Detailed reference viewed: 20 (10 ULg)
See detailEvaluation de la performance des entreprises sociales
Mertens de Wilmars, Sybille ULg

Scientific conference (2011, June 07)

Detailed reference viewed: 21 (2 ULg)
See detailSymptomatologie dépressive à l'adolescence: Analyse textuelle grâce à Lexico3
Boulard, Aurore ULg

Scientific conference (2011, June 07)

Detailed reference viewed: 27 (6 ULg)
See detail« L’arme des faibles ? Musique, migration et politique en Europe »
Martiniello, Marco ULg

Scientific conference (2011, June 06)

Detailed reference viewed: 37 (18 ULg)
Full Text
See detailA life-attenuated BLV deletant as a candidate vaccine to inhibit viral transmission in bovine herds
Rodriguez, Sabrina ULg; Gutiérrez, G.; Florins, A. et al

Scientific conference (2011, June 06)

A life-attenuated BLV deletant as a candidate vaccine to inhibit viral transmission in bovine herds Sabrina M. Rodríguez1*†, Gerónimo Gutiérrez2*, Arnaud Florins3, Lucas Vagnoni2, Irene Alvarez2, Nicolas ... [more ▼]

A life-attenuated BLV deletant as a candidate vaccine to inhibit viral transmission in bovine herds Sabrina M. Rodríguez1*†, Gerónimo Gutiérrez2*, Arnaud Florins3, Lucas Vagnoni2, Irene Alvarez2, Nicolas Gillet1, Karina Trono2‡, Luc Willems1,3‡ *‡S.M. Rodríguez / G. Gutiérrez and K.Trono / L. Willems contributed equally to this work. 1 Molecular and Cellular Epigenetics, Interdisciplinary Cluster for Applied Genoproteomics (GIGA), University of Liège (ULg), Liège (4100), Belgium. 2 Instituto de Virología, CICVyA, Instituto Nacional de Tecnología Agropecuaria, (1712), Castelar, Argentina. 3 Molecular and Cellular Biology, Gembloux Agro-Bio Tech, University of Liège (ULg), Gembloux (5030), Belgium †E-mail: sabrina.rodriguez@ulg.ac.be Bovine Leukemia Virus (BLV) is a major sanitary concern in many countries where the virus is widely disseminated among dairy herds with obvious economic impact. Different control strategies have been implemented worldwide to control BLV infection or eradicate the disease with diverse success. Eradication by culling is not economically sustainable in highly infected regions such as Argentina, US or Japan. Segregation of BLV-infected cattle is expensive due to duplication of facilities. Finally, several candidate vaccines based on recombinant viral proteins were unsuccessful to protect from challenge. Therefore, here we propose a novel strategy aimed to decrease seroprevalence based on the employ of a life-attenuated BLV provirus as a candidate vaccine. The rationale behind this strategy is the deletion of genes required to induce pathogenesis leaving those involved in infectivity, resulting in an attenuated deletant with impaired transmissibility. Preliminary experiments showed that the deletant provirus is infectious and elicits an efficient immune response in sheep (n=3) and in the natural host, bovines (n=9). Lack of spread to sentinels further supports the safety of the vaccine. Based on these promissory results, an ongoing validation program is being performed to evaluate the capacity of the candidate vaccine to protect from wild-type BLV infection in herd conditions (n=105). Infection will be routinely monitored and proviral loads will be determined. The efficiency of the immune response will be evaluated by titration of specific antibodies, cytotoxic lysis efficiency and cytokine profile. Viral expression ex vivo and provirus clonality will be also evaluated. This data will be instrumental for understanding the basic mechanisms undergoing during BLV infection and for elaborating a novel vaccine. We do believe this practical and cost-effective vaccination strategy is the sole economically viable in countries with high prevalence. [less ▲]

Detailed reference viewed: 54 (3 ULg)
Full Text
See detailPathways of Human T-Lymphotropic Virus type I for viral entry
Boulanger, F.; Rodriguez, Sabrina ULg; Willems, L.

Scientific conference (2011, June 06)

Pathways of Human T-Lymphotropic Virus type I for viral entry Boulanger Fanny N.J., Rodriguez Sabrina and Willems Luc Cellular and Molecular Epigenetics, GIGA-Research, Liège The Human T-Lymphotropic ... [more ▼]

Pathways of Human T-Lymphotropic Virus type I for viral entry Boulanger Fanny N.J., Rodriguez Sabrina and Willems Luc Cellular and Molecular Epigenetics, GIGA-Research, Liège The Human T-Lymphotropic Virus type I (HTLV-1), the first discovered human retrovirus, infects an estimated number of 20 million people worldwide. HTLV-1 is the causative agent of Adult T-cell Leukemia/Lymphoma (ATL) and a neurodegenerative disease called HTLV associated myeolopathy / tropical spastic paraparesis (HAM/TSP). We have been interested in the early steps of HTLV entry into cells. Infection requires interaction of the viral envelope glycoproteins (SU and TM) with the cell membrane. Three molecules are required for binding and entry into cells: heparan-sulfate proteoglycans (HSPGs), the VEGF-165 receptor Neuropilin 1 (NRP-1) and the ubiquitous glucose transporter GLUT-1. Consecutive steps of HTLV-1 entry are poorly characterized. These could involve phagocytosis/macropinocytosis, caveolae pathway, clathrin-mediated endocytosis, and several mechanisms independent of these two organelles but mediated by dynamin. To identify the endocytic pathways of HTLV-1 entry, we used two complementary strategies based either on pharmacological inhibition or on dominant-negative proteins expression. First, we evaluated the effect of a series of pharmacological inhibitors to interfere with main endocytic pathways. We used wortmannin and cytochalasin D to interfere with phagocytosis and macropinocytosis through their action on phosphatidyl-inositol-3 kinase and on the actin network, respectively. Clathrin-mediated endocytosis was blocked with chlorpromazine and with a polyclonal anti-clathrin antibody as a direct competitor for the formation of clathrin-coated pits. The caveolar function was disrupted with the sterol-binding drug nystatin and the protein tyrosine-kinase inhibitor genistein. Finally, dynamin was competed with a peptide (Dynamin Inhibitory Peptide) or inhibited by dynasore. Since pharmacological inhibitors may have off-target effects, we also used an alternate approach based on dominant-negative proteins expressed by lentivirus-derived vectors. An AP-2-binding site from Eps15 (Epidermal Growth Factor Receptor Substrate 15) was used to interfere with clathrin-mediated endocytosis. A N-terminally GFP-tagged caveolin-1 construct acted as an inhibitor of the caveolae pathway. A dominant-negative GTP-binding mutant of dynamin2(aa) was used to interfere with dynamin-dependant internalization pathways. Lentiviruses expressing these dominant-negative proteins were transduced into several cell lines or primary cells (T-lymphocytes and dendritic cells). These transduced cells were then infected by co-cultivation with HTLV-1-infected T-lymphocytes (MT2) or with free particles. These different approaches will thus allow identifying the pathways involved in cell entry by HTLV-1. [less ▲]

Detailed reference viewed: 21 (2 ULg)
See detailAnalyses organoleptiques et nutritionnelles des aliments, quelles tendances?
Delacharlerie, Sophie ULg

Scientific conference (2011, June 06)

Detailed reference viewed: 24 (6 ULg)
Full Text
See detailEpidemiology and genetics of FIPA
Beckers, Albert ULg

Scientific conference (2011, June 06)

Detailed reference viewed: 26 (10 ULg)
Full Text
See detailDetection of bright multiply imaged quasars by GAIA
Finet, François ULg

Scientific conference (2011, June 06)

Bright multiply imaged quasars offer unique tools to investigate the properties of the Universe as a whole (cosmological parameters), the astrophysical properties of the remote galaxies acting as ... [more ▼]

Bright multiply imaged quasars offer unique tools to investigate the properties of the Universe as a whole (cosmological parameters), the astrophysical properties of the remote galaxies acting as deflectors (i.e. their mass, extinction law, ...) as well as the structure of the background sources (accretion disk, central engine, etc.). Multiply imaged quasars will represent the most easily identified signature of lensing in GAIA observations. Several thousands of such cases are expected with J <=20. Furthermore, the complete QSO catalog which will be built from the GAIA observations will be very attractive and unique in order to study QSO evolution, large scale structures, intervening absorbers, the inertial frame, ... The aim of this presentation is to report about a realistic estimate of the expected number of bright multiply imaged quasars that will be detected by GAIA. [less ▲]

Detailed reference viewed: 22 (3 ULg)
See detailTra ricette del Sè e ricette dell'Altro. Etnografia di pratiche culinarie marocchine in Italia.
Mescoli, Elsa ULg

Scientific conference (2011, June 04)

L’obiettivo della mia ricerca è studiare i processi di soggettivazione messi in atto da donne marocchine residenti nella città di Sesto San Giovanni attraverso le loro pratiche culinarie e gli oggetti ... [more ▼]

L’obiettivo della mia ricerca è studiare i processi di soggettivazione messi in atto da donne marocchine residenti nella città di Sesto San Giovanni attraverso le loro pratiche culinarie e gli oggetti usati e posseduti. Gli elementi analizzati sono stati raccolti nel corso di un’indagine etnografica condotta all’interno delle case, in spazi pubblici, in ristoranti e bazar. Il mio interesse è rivolto alle micropratiche del quotidiano (De Certeau 1980, Mahmood 2005) attraverso le quali le donne intervistate definiscono il proprio sé (Martin et al. 1992), esercitano la propria individualità in maniera creativa ed artistica (Adapon 2008) così come la propria appartenenza ad un gruppo, micropratiche che la storia migratoria ha influenzato, ridefinito, fissato. I gesti e gli oggetti maneggiati, seguendo la teoria praxeologica della soggettivazione (Warnier 2001, Julien et al. 2009), sono centrali nella formazione dinamica del soggetto. Tali gesti e oggetti comunicano valori, posizioni, appartenenze culturali (Douglas e Isherwood 1984, Bourdieu 1979) costantemente ridefinite e negoziate, sono strumenti di riti sociali e di fedi incorporate che si ancorano alla loro concretezza. Nel contesto discorsivo in cui le dinamiche analizzate si producono, lo spazio dedicato agli “stranieri” in generale e in particolare al cibo etnico è sovradeterminato. Il cibo “dell’Altro” è rappresentativo della cultura di quest’ultimo e definito come possibile luogo di incontro (Parisi 2007, Montanari 2006), nell’ottica di una cultura “da assaggiare”. Ciò crea degli ambiti di movimento ben precisi per le donne considerate nella ricerca, spazi determinati quasi istituzionalmente e inseriti in complesse dinamiche di potere, ma all’interno dei quali una messa in scena (Goffman 1987) di sé è però anche funzionale ad un posizionamento attivo nel contesto sociale vissuto (Naji 2009, Adapon 2008). Gli oggetti, che raccontano le storie di vita delle donne alle quali appartengono, sono considerati anche nel contesto delle dinamiche internazionali di circolazione dei beni, mettendo in luce peculiari traiettorie fisiche e di significato (Appadurai 1986), una sorta di “via delle spezie” che si dipana in uno spazio sensibile tanto quanto culturale. Emerge infatti una definizione della tradizione e dell’originalità della gastronomia marocchina basata non sempre sull’attestazione della provenienza dal paese in questione di ingredienti e utensili usati, quanto sull’aderenza ad uno stile (Gell 1998) che la identifica inequivocabilmente. Le due storie che presenterò saranno interpretate alla luce di queste considerazioni, con una particolare attenzione agli aspetti relativi alla definizione del sé e di uno stile proprio e/o condiviso attraverso la materialità. [less ▲]

Detailed reference viewed: 16 (2 ULg)
See detailThe Justification for Pillage: Human Resources Management in a Gold Mining Multinational (Ghana)
Andre, Géraldine ULg; Hilgers, Mathieu

Scientific conference (2011, June)

Detailed reference viewed: 21 (0 ULg)
See detailAutomated SPE and clean-up for PBDEs in human blood
Focant, Jean-François ULg

Scientific conference (2011, June)

Detailed reference viewed: 4 (0 ULg)
See detailAdvances in Automation for the Measurement of Selected PBDEs in Human Serum
Focant, Jean-François ULg

Scientific conference (2011, June)

Detailed reference viewed: 4 (1 ULg)
See detailProbing recognition processes, forces and motions within single molecules
Willet, Nicolas ULg

Scientific conference (2011, June)

Detailed reference viewed: 9 (1 ULg)
See detailGenetics of pituitary tumor
Beckers, Albert ULg

Scientific conference (2011, June)

Detailed reference viewed: 18 (7 ULg)
See detailLa conciliation vie privée-vie professionnelle des gestionnaires d’une grande société de transport au Québec : une analyse en termes de genre
Grodent, Françoise ULg; Linckens, Aurélie ULg; Tremblay, Diane-Gabrielle

Scientific conference (2011, June)

Cette communication a pour principal objectif d’aborder ce thème relatif à l’adéquation entre vie privée et vie professionnelle sous le regard du genre. Il s’agit donc, notamment, d’identifier le rôle que ... [more ▼]

Cette communication a pour principal objectif d’aborder ce thème relatif à l’adéquation entre vie privée et vie professionnelle sous le regard du genre. Il s’agit donc, notamment, d’identifier le rôle que joue le genre de la personne dans la recherche d’un équilibre famille/emploi, dans la façon de prioriser les exigences familiales et professionnelles, dans la manière de gérer la relation à l’entreprise ainsi que la carrière professionnelle caractérisée, en partie, par les promotions et les opportunités d’ascension hiérarchique, etc. De plus, notons que cette problématique est analysée dans un environnement masculin qu’est celui d'une grande société de transport québécoise et concerne une catégorie socio-professionnelle bien définie, à savoir les gestionnaires des trois premiers niveaux, sur les quatre que compte cette entreprise publique. [less ▲]

Detailed reference viewed: 33 (1 ULg)
See detailp27(Kip1) as a master regulator of cortical neuron migration
Godin, Juliette ULg; Thomas, Noémie; Laguesse, Sophie ULg et al

Scientific conference (2011, June)

Detailed reference viewed: 16 (1 ULg)
See detailL'Atlas linguistique de la Wallonie: un nouveau volume et quelques perspectives
Baiwir, Esther ULg

Scientific conference (2011, May 30)

Detailed reference viewed: 17 (1 ULg)
Full Text
See detailOn the use of gender-marked personal pronouns: the emergence of a new system in southern Dutch?
De Vos, Lien ULg

Scientific conference (2011, May 30)

Detailed reference viewed: 19 (7 ULg)
See detailRaymond Lemaire (1921-1997) and the Quartier des Arts Association in Brussels
Houbart, Claudine ULg

Scientific conference (2011, May 30)

Detailed reference viewed: 21 (4 ULg)
See detailMémoire et pathologies neurodégénératives
Adam, Stéphane ULg

Scientific conference (2011, May 28)

Detailed reference viewed: 5 (0 ULg)