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See detailIntraoperative brain image update based on biomechninical models
Vigneron, Lara M.; Robe, Pierre A.; Verly, Jacques ULg

Conference (2006)

See detailLa régénération des espèces forestières vulnérables à l'Est du Cameroun : cas de Milicia excelsa
Daïnou, Kasso ULg; Doucet, Jean-Louis ULg; Mahy, Grégory ULg

Conference (2006)

Au Cameroun, le processus de la gestion durable des forêts a conduit une société d'exploitation forestière industrielle à procéder depuis quelques années, en partenariat avec des institutions de recherche ... [more ▼]

Au Cameroun, le processus de la gestion durable des forêts a conduit une société d'exploitation forestière industrielle à procéder depuis quelques années, en partenariat avec des institutions de recherche locales ou internationales, à des études scientifiques d'espèces identifiées comme vulnérable dans ses concessions. A ce titre, la détermination de techniques d'interventions sylvicoles pragmatiques ainsi que l'écologie d'espèces telles que l'iroko, Milicia excelsa sont étudiées afin de comprendre et de remédier au faible niveau de régénération naturelle. Les observations portent d'une part sur les performances de fructification (phénologie, pluie de graine, germination) et de dispersion des semences, et d'autre part, sur la dynamique de populations naturelles de juvéniles. Etant donné qu'une faible performance de régénération peut être due à la consanguinité, elle-même résultant de la raréfaction des populations, il est prévu également une analyse de la diversité génétique locale. Parallèlement, des essais de plantations permettent de juger des effets de différents facteurs abiotiques ou biotiques sur la dynamique des plantules. [less ▲]

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See detailManagement of soils polluted by heavy metals in cultivated areas : which kind of bioremediation ?
Schvartz, Christian; Zu, Yanqun; Douay, Francis et al

Conference (2006)

Within the periurban areas of big cities, soils are often contaminated by heavy metals spread by human activity: atmospheric fallouts due to industry and traffic, recycling of urban wastes (directly or ... [more ▼]

Within the periurban areas of big cities, soils are often contaminated by heavy metals spread by human activity: atmospheric fallouts due to industry and traffic, recycling of urban wastes (directly or after water treatment), fertilizers and pesticides used in agriculture… This is, among others, verified in the surroundings of Kunming (Yunnan, PR China) and Lille (Nord-Pas de Calais, France), areas with high density of population and traditional metallurgical industries. These areas have also intensive agricultural activities characterized by important vegetable productions, and are generally known as the "green belts" of the cities. These cultures, with short vegetative period, need high biodisponibility of nutrients, biodisponibility which may also occur for other unwanted elements existing in the soil, such as heavy metals. For evident human health reasons the quality of the crops must be ensured and their heavy metal content kept as low as possible, at least under the values of relevant legal thresholds. Thus, vegetables are particularly sensitive to the presence of heavy metals in the soils where they are growing. It is therefore necessary to manage these soils in order to preserve public health or, more basically, the income of the farmers, as contaminated vegetables would not be marketable. Thus, for these large areas contaminated by diffuse pollution, bioremediation looks to be appropriate. But the kind of the bioremediation which will be applied has to be adapted to the severity of the soil pollution and to the intended land use. In this project, we have assessed the contents of Pb, Cd, Zn and Cu of soils and vegetables within the Chenggong county (near Kunming), and compared the results to the already known situation of the surroundings of two lead and zinc smelters located close to Lille. Then goals and ways of bioremediation have been discussed and the first steps of implementation experimented. [less ▲]

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See detailSubaerial exposure recording on a Paleocene carbonate platform – Example of the Campo section, Spain
Da Silva, Anne-Christine ULg; Loisy, Corinne; Toullec, Renaud et al

Conference (2006)

Detailed reference viewed: 14 (5 ULg)
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See detailPost-invasion evolution of an invasive plant : altitudinal differenciation in germination and growth
Monty, Arnaud ULg; Mahy, Grégory ULg

Conference (2006)

Senecio inaequidens DC. was introduced from South Africa to Europe more than one hundred years ago, in a few precise locations linked to wool industry and extended its distribution throughout Europe. In a ... [more ▼]

Senecio inaequidens DC. was introduced from South Africa to Europe more than one hundred years ago, in a few precise locations linked to wool industry and extended its distribution throughout Europe. In a context of global warming, the potential evolution in germination and growth during the invasion process was studied in relation to altitude and climate. Seeds were collected along two transects (both altitudinal and climatic) in Belgium and France, going from the sea level to high altitudes (respectively 485 m and 1700 m) through the introduction spots. Respectively four and five climatic zones per transect, two populations per zone and ten randomly selected individuals per population were sampled. Seeds were sorted in order to discard maternal effects. Ten seeds per parent individual were thereafter sown in pots in a common garden experiment in Gembloux (Belgium). Germination was checked every two days. Height and diameter of plants, enabling the calculation of plant volume, were measured every 25 days. Despite an important variability, linear regression of first germination time (since sowing) vs altitude was significant (p = 0.001) for the French gradient, but not for the Belgian one. No significant difference was found in germination rate between climatic zones. For each of the three measurement times of plant height and diameter, regression of plant volume vs altitude was also significant for the French transect (p varying from 0.025 to 0.000 according to time), but not for the Belgian one. French plants from elevated locations germinated later and grow slowlier. These preliminary results suggest that contrasted climatic conditions in the French gradient, going from the Mediterranean coast to the Pyrrenean high elevations led to genetic differenciation of Senecio populations during its invasion in southern France. Less contrasted climatic conditions, together with a supposed loss of genetic variability (Lafuma 2003), did not lead to a clear differenciation in Belgium. References : Lafuma, L. (2003). L'invasion de Senecio inaequidens (Asteraceae) en Europe: une approche évolutive. PhD thesis, Montpellier University. [less ▲]

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Peer Reviewed
See detailPreoperative Brain Image Update with FEM- and XFEM-based Biomedical Model
Vigneron, Lara M.; Boman, Romain C.; Robe, Pierre A. et al

Conference (2006)

Detailed reference viewed: 2 (0 ULg)
See detailAlimentation et produits locaux
Duquesne, Brigitte ULg

Conference (2006)

Detailed reference viewed: 18 (1 ULg)
Peer Reviewed
See detailHybridization and polyploidy: driving forces of evolutionary processes in the Fallopia spp complex
Vanderhoeven, Sonia ULg; Saad, Layla ULg; Tiébré, Marie-Solange et al

Conference (2006)

Detailed reference viewed: 10 (0 ULg)
See detailLa conscience esthétique et les poupées de cire chez Husserl
Steinmetz, Rudy ULg

Conference (2006)

Detailed reference viewed: 10 (0 ULg)
Peer Reviewed
See detailAn astrobiology QUIZZ: How to recognize extraterrestrial life?
Vandenabeele-Trambouze, O.; Alekina, I.; Benzerara, K. et al

Conference (2006)

Detailed reference viewed: 13 (0 ULg)
Peer Reviewed
See detailEen contrast in contrastief taalonderzoek
Hiligsmann, Philippe; Rasier, Laurent ULg

Conference (2006)

Detailed reference viewed: 5 (0 ULg)
Peer Reviewed
See detailBenevolent sexism and cognitive performance of women
Bollier, T.; Dardenne, Benoît ULg

Conference (2006)

Detailed reference viewed: 6 (0 ULg)
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See detailEvolution de la consommation alimentaire en Belgique et en Région wallonne
Duquesne, Brigitte ULg; Matendo, Sadrac; Lebailly, Philippe

Conference (2006)

Detailed reference viewed: 58 (6 ULg)
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See detailProbing the existence of axions with the polarization of objects at cosmological distances
Hutsemekers, Damien ULg

Conference (2006)

Photon - axion conversion within a magnetic field over cosmological distances can affect the polarization of distant objects like quasars. We report the observation of large-scale alignments of quasar ... [more ▼]

Photon - axion conversion within a magnetic field over cosmological distances can affect the polarization of distant objects like quasars. We report the observation of large-scale alignments of quasar polarization vectors as well as a rotation of their polarization angles with distance. This effect might be due to the presence of axions along the line of sight. [less ▲]

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See detailPatterns of early eukaryote diversification
Javaux, Emmanuelle ULg

Conference (2006)

Detailed reference viewed: 3 (0 ULg)
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See detailEvaluation of concrete substrate prior to overlay. Bonded concrete overlays – Recommendations and Applications
Courard, Luc ULg

Conference (2006)

The knowledge and analysis of the causes of degradations is the first step in repairing existing concrete structures. The assessment is performed by using destructive and non destructive methods. These ... [more ▼]

The knowledge and analysis of the causes of degradations is the first step in repairing existing concrete structures. The assessment is performed by using destructive and non destructive methods. These allow to detect modification of physical, chemical and/or mechanical properties of concrete: cracking, deformation, spalling, carbonation, …etc are various causes of distress, with potential irreversible consequences on concrete structure behaviour. A description of specific methods for pavements and structural slabs is proposed; it is usually recommended to combine complementary methods for efficient diagnosis. This chapter wants to offer an overview of techniques and references that could help the user in selecting the most appropriate investigation program. [less ▲]

Detailed reference viewed: 7 (0 ULg)
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See detailProposition pour l'édition des sources primaires CCFM
Mazziotta, Nicolas ULg

Conference (2006)

Detailed reference viewed: 15 (2 ULg)
See detailLes reboisements en moabi, le cas du village de Medjoh
Semereab, E.; Doucet, Jean-Louis ULg

Conference (2006)

Detailed reference viewed: 36 (14 ULg)
Full Text
See detailIn situ study of cotton dyed fibres by Raman spectroscopy
Lepot, Laurent ULg

Conference (2006)

Detailed reference viewed: 11 (5 ULg)
See detailL’employabilité : un impératif de concurrence
Orianne, Jean-François ULg; Conter, Bernard

Conference (2005, December 16)

Detailed reference viewed: 35 (5 ULg)
See detailEuropa's FUV auroral tail observed on Jupiter
Grodent, Denis ULg

Conference (2005, December 12)

Detailed reference viewed: 2 (0 ULg)
See detailPromoter-driven high expression of metal homeostasis genes in Arabidopsis halleri
Hanikenne, Marc ULg

Conference (2005, December 08)

Detailed reference viewed: 6 (1 ULg)
See detailQualité des travaux de fin d'études
Bruyère, Olivier ULg

Conference (2005, December 06)

Detailed reference viewed: 1 (1 ULg)
See detailObservations of Saturn's Atmosphere and Auroras by Cassini UVIS and VIMS
Pryor, W. R.; Baines, K.; West, R. et al

Conference (2005, December 01)

Cassini's Ultraviolet Imaging Spectrograph (UVIS) has completed a year of study of Saturn's atmosphere and auroras. Two long slit spectral channels are used to obtain EUV data from 56.3-118.2 nm and FUV ... [more ▼]

Cassini's Ultraviolet Imaging Spectrograph (UVIS) has completed a year of study of Saturn's atmosphere and auroras. Two long slit spectral channels are used to obtain EUV data from 56.3-118.2 nm and FUV data from 111.5-191.3 nm. 64 spatial pixels along each slit are combined with slit motion to build up spectral images of Saturn, with sufficient spatial resolution to reveal Saturn's auroral oval. Saturn images include evidence for rapid auroral variations and polar UV-dark regions mostly inside the auroral ovals. Absorption bands of acetylene are clearly seen in the reflected sunlight spectrum. The auroral emission spectrum is similar to that of Jupiter, showing H2 band emission and H Lyman-alpha emission. Saturn's auroral, dayglow, and nightglow spectra show significant differences. Saturn's aurora is observed to vary in brightness by at least a factor of four. The brightest auroral emissions seen so far occurred after 2004 day 207 19:30 when Cassini CAPS and MAG recorded passage of a solar wind shock. The enhanced auroral brightness persisted for days, and is seen at both poles of Saturn. Cassini RPWS observed enhanced auroral kilometric emissions during several auroral brightening events seen by UVIS. A campaign of Hubble Space Telescope UV imaging with ACS (Advanced Camera for Surveys) of Saturn's dayside southern auroral zone took place on 2005 February 17. Cassini UVIS and VIMS observed Saturn's nightside northern aurora during this period. The UVIS long slit was aligned with lines of latitude on Saturn, providing information about intensity and spectral variations along the auroral oval. Cassini VIMS has now obtained an initial image and spectrum of Saturn's H3}+ auroral emissions. [less ▲]

Detailed reference viewed: 31 (6 ULg)
See detailMagnetic Flux Closure Directly Induced by Interplanetary Shocks: Observations Using IMAGE-FUV and SuperDARN, and Modelling With GUMICS-4.
Hubert, Benoît ULg; Palmroth, M.; Milan, S. E. et al

Conference (2005, December 01)

A method has been developed to monitor the dayside and nightside reconnection rates using FUV remote sensing of the proton aurora and ionospheric convection patterns. Global images of the proton aurora ... [more ▼]

A method has been developed to monitor the dayside and nightside reconnection rates using FUV remote sensing of the proton aurora and ionospheric convection patterns. Global images of the proton aurora are obtained using the SI12 instrument of the FUV experiment on board the IMAGE satellite, and used to identify the open/closed (o/c) field line boundary. SuperDARN data are used to determine the ionospheric convection velocity, and the associated electric field. The dayside and nightside reconnection voltages are then determined accounting for the ionospheric electric field and the motion of the o/c boundary. This method is used to compute the dayside and nightside reconnection voltages during two interplanetary shocks for which the IMF was mostly northward, so that the amount of open magnetic flux was so small that no significant substorm expansion phase could develop. The flux closure voltage shows a sharp signature when the interplanetary shocks sweep by the nightside magnetosphere. MHD simulations conducted using the GUMICS-4 model for similar conditions show a similar signature in the nightside flux closure rate. We suggest that this flux closure event is directly induced by the compression of the magnetotail. [less ▲]

Detailed reference viewed: 21 (1 ULg)
See detailHST/ACS UV Imaging of Saturn's Southern Aurora in a Quiet State
Wannawichian, S.; Clarke, J. T.; Gérard, Jean-Claude ULg et al

Conference (2005, December 01)

Prior observations of Saturn's aurora have suggested that the aurora are highly variable, with much of the activity controlled by conditions in the solar wind. Observations of Saturn's UV aurora on 17 ... [more ▼]

Prior observations of Saturn's aurora have suggested that the aurora are highly variable, with much of the activity controlled by conditions in the solar wind. Observations of Saturn's UV aurora on 17 February 2005 were performed with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST) to further test this. The UV Solar Blind Camera (SBC) imaged the UV emissions from 115.0 to 170.0 nm for a period of 5 HST orbits, or 8 hours, corresponding to 74% of a Saturn rotation. In that observation period, HST imaged the southern auroral region in sunlight, but not the northern auroral region because of the tilt of Saturn rotation axis. Saturn's aurora appeared in its most quiet state, comparable or fainter than those observed by HST's Space Telescope Imaging Spectrograph (STIS) in January 2004. Discrete emissions were detected, with some evidence of latitudinal variations of localized emissions and motions. At the same time, Cassini's Ultraviolet Imaging Spectrograph (UVIS) studied the intensity and spectral distribution of Saturn's northern night side emission region. With the benefit of simultaneous observations, we found that the characteristics of Saturn's emission region in the day side southern aurora appeared correlated with Saturn kilometric radio (SKR) emissions, charged particles and magnetic field measurements in the night side Saturn magnetosphere. The faint UV aurora are consistent with the previously reported correlation between radio and UV emissions, and the low disturbance in Saturn's magnetosphere observed by Cassini. In this quiet state, the auroral oval brightness is a few kilorayleighs (KR). The summed images show evidence of an offset auroral oval toward midnight responding to solar wind pressure and more diffuse features in the dusk side. The specific properties of Saturn's aurora in its minimum state will be presented, and compared with more active periods. [less ▲]

Detailed reference viewed: 18 (4 ULg)
See detailOpen Flux Estimates and Reconnection Rates in Saturn's Magnetosphere, Derived Using HST and Cassini Data
Badman, S. V.; Bunce, E. J.; Clarke, J. T. et al

Conference (2005, December 01)

During January 2004, a sequence of 68 UV images of Saturn's southern aurora was obtained by the Hubble Space Telescope (HST), coordinated with measurements of the upstream interplanetary conditions made ... [more ▼]

During January 2004, a sequence of 68 UV images of Saturn's southern aurora was obtained by the Hubble Space Telescope (HST), coordinated with measurements of the upstream interplanetary conditions made by the Cassini spacecraft. Using the poleward edge of the observed aurora as a proxy for the open-closed field line boundary, the open flux content of the southern polar region has been estimated. It is found to range from 15 to 50 GWb during the interval, such a large variation providing evidence of a significant magnetospheric interaction with the solar wind, in particular with structures associated with corotating interaction regions (CIRs). Cassini measurements of the upstream interplanetary conditions have been used to estimate the rate of open flux production at the magnetopause. By comparison with the open flux values obtained from the images, the rate of open flux closure in Saturn's magnetotail is also estimated. We find that the rate of open flux production is high (200 kV) in the high-field strength intervals following the onset of CIR-related compressions, and elevated (30-40 kV) in an intermediate-field strength rarefaction region. High flux closure rates (100-200 kV) are estimated in association with the onset of solar wind compressions and are intermittently increased (30-60 kV) during a weak-field rarefaction region. The disturbed auroral forms seen in the images are discussed in relation to the estimated reconnection rates. Recent studies have suggested that Saturn Kilometric Radiation emissions are also disturbed by the onset of CIR compressions at Saturn. [less ▲]

Detailed reference viewed: 23 (3 ULg)
See detailStress et non qualité
Nyssen, Anne-Sophie ULg

Conference (2005, December)

Detailed reference viewed: 10 (1 ULg)
Peer Reviewed
See detailSubacute effects of sertraline on attentional and executive functions in depression
Constant, Eric; Adam, Stéphane ULg; Gillain, B. et al

Conference (2005, November 26)

Detailed reference viewed: 5 (0 ULg)
Peer Reviewed
See detailThe Sounds of Rock Poetry and the Avant-Garde
Delville, Michel ULg

Conference (2005, November 25)

Detailed reference viewed: 5 (1 ULg)
See detailPTH : what are we really assaying ?
Cavalier, Etienne ULg

Conference (2005, November 25)

Detailed reference viewed: 10 (0 ULg)
Peer Reviewed
See detailOptimisation de la spécificité d’encodage pour le diagnostic précoce de la maladie d’Alzheimer
Adam, Stéphane ULg; Van der Linden, Martial ULg; Ivanoiu, Adrian et al

Conference (2005, November 24)

Detailed reference viewed: 7 (1 ULg)
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See detailRites et récits dans l'Etat hébreu : l'enfance du politique selon Spinoza
Herla, Anne ULg

Conference (2005, November 24)

Detailed reference viewed: 1 (0 ULg)
See detailValidation of models tropospheric excess path length for GNSS, based on ECMWF analysis products
Bonfond, Bertrand ULg; Martelucci, Antonio

Conference (2005, November 23)

Detailed reference viewed: 6 (1 ULg)
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See detailTerritoires et développement durable
Halleux, Jean-Marie ULg; Larrue, Corine; Ruegg, Jean

Conference (2005, November 18)

Detailed reference viewed: 28 (8 ULg)
See detailLes morales de Sartre, une logique de l’erreur ?
Cormann, Grégory ULg

Conference (2005, November 18)

Detailed reference viewed: 34 (4 ULg)
See detailValeurs de référence: comment les établir? Comment les vérifier?
Chapelle, Jean-Paul ULg; Libeer, J. C.

Conference (2005, November 17)

Detailed reference viewed: 8 (0 ULg)
Peer Reviewed
See detailCartographie de l’accessibilité par les alternatives à la voiture
Cornet, Yves ULg; Daxhelet, D.; Halleux, Jean-Marie ULg et al

Conference (2005, November 09)

Detailed reference viewed: 24 (9 ULg)
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See detailAssessing the effects of compositional heterogeneity on phylogenomic analyses
Baurain, Denis ULg; Beiko, Robert G.; Ragan, Mark A.

Conference (2005, November 04)

Detailed reference viewed: 7 (3 ULg)
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See detailMédecine familiale et approche communautaire
Vanmeerbeek, Marc ULg

Conference (2005, November 02)

Detailed reference viewed: 13 (2 ULg)
Peer Reviewed
See detailEXploration des processus inhibiteurs dans le vieillissement normal et la maladie d'Alzheimer
Collette, Fabienne ULg; Adam, Stéphane ULg; Hogge, Michaël et al

Conference (2005, November)

Detailed reference viewed: 21 (2 ULg)
See detailEndogenous mode of competition in general equilibrium
Tharakan, Joseph ULg

Conference (2005, November)

Detailed reference viewed: 10 (1 ULg)
See detailPolitiques de l'autobiographie chez Sartre
Denis, Benoît ULg

Conference (2005, November)

Detailed reference viewed: 8 (0 ULg)
See detailNovel perspectives in the pathogenesis of type 1 diabetes
Geenen, Vincent ULg

Conference (2005, November)

Detailed reference viewed: 7 (1 ULg)
Full Text
See detailIMPACT DE L’EVOLUTION REGLEMENTAIRE EUROPEENNE SUR LES PRATIQUES AGRICOLES DES EXPORTATEURS ACP ET PROGRAMME DE FORMATION DES CADRES DES ENTREPRISES MIS EN PLACE POUR LE PROGRAMME PIP DU COLEACP
Schiffers, Bruno ULg

Conference (2005, November)

La succession des crises alimentaires a poussé les consommateurs européens à exiger toujours plus de garantie quant à la sécurité de l’alimentation destinée à l’homme et aux animaux d’élevage. La ... [more ▼]

La succession des crises alimentaires a poussé les consommateurs européens à exiger toujours plus de garantie quant à la sécurité de l’alimentation destinée à l’homme et aux animaux d’élevage. La législation européenne a, en conséquence, évolué rapidement et le niveau d’exigence s’est fortement accru, le principe de base étant pour le producteur, l’importateur et le distributeur de pouvoir prouver aux autorités compétentes que toutes les précautions ont été prises, qu’une traçabilité des produits entrant dans la chaîne alimentaire existe et que, en cas de problème avéré ou suspecté, une procédure de notification, de rappel ou de retrait a été prévue et mise en place. Pour les producteurs ACP, ces évolutions les ont conduit à devoir modifier dans l’urgence leurs pratiques. La réussite de la mise en conformité et la mise en pratique dans les entreprises d’une politique de management de la qualité a exigé un effort important de formation non seulement au niveau des managers, des cadres et du personnel des entreprises, mais aussi au niveau de tous les acteurs qui gravitent autour de la filière « fruits et légumes d’exportation ». Le PIP a développé un dispositif de formation basé sur la capitalisation de compétences chez les acteurs locaux : prestataires de services et formateurs ACP, cadres techniques intermédiaires, responsables de laboratoire, agents de l’état chargés du contrôle, etc. Commencées depuis 2003, les actions du PIP en faveur des entreprises ACP concernent à présent plus de 80% du tonnage des fruits et légumes frais (hors bananes) exportés vers l’Union européenne. [less ▲]

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See detailSpace Weather influence on satellite based navigation and precise positioning
Warnant, René ULg; Lejeune, Sandrine; Bavier, Michaël

Conference (2005, November)

Detailed reference viewed: 9 (0 ULg)
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Peer Reviewed
See detailCGMS/WOFOST model principles
Tychon, Bernard ULg

Conference (2005, November)

Detailed reference viewed: 16 (1 ULg)
Peer Reviewed
See detailLa tremblante du mouton influence-t-elle le système immunitaire lors d’une réponse vis-à-vis d’un antigène
Defaweux, Valérie ULg; Dorban, G.; Demonceau, C. et al

Conference (2005, November)

Detailed reference viewed: 22 (15 ULg)
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See detailDiagnostique du syndrome d’apnées et hypopnées obstructives du sommeil par l’analyse des mouvements de la mandibule
Senny, Frédéric ULg; Destiné, Jacques ULg; Ansay, Pierre et al

Conference (2005, November)

Les mouvements de la mandibule donnent une image des efforts respiratoires, particulièrement en période d’apnées et d’hypopnées du sommeil. Ils sont donc une alternative à la pression oesophagienne. Cette ... [more ▼]

Les mouvements de la mandibule donnent une image des efforts respiratoires, particulièrement en période d’apnées et d’hypopnées du sommeil. Ils sont donc une alternative à la pression oesophagienne. Cette étude a mis en évidence le potentiel d’une analyse automatique des mouvements de la mâchoire pour le diagnostique du syndrome d’apnées et hypopnées obstructives du sommeil (SAHOS) par la mesure de l’indice d’apnées et d’hypopnées (IAH). [less ▲]

Detailed reference viewed: 35 (10 ULg)
See detailBienveillance et générosité chez Spinoza
Herla, Anne ULg

Conference (2005, October 27)

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See detailInterfollicular fibrosis and organohalogens in the thyroid of the harbour porpoise (phocoena phocoena) of the British and Belgian coasts
Schnitzler, Joseph ULg; Das, Krishna ULg; Beineke, Andreas et al

Conference (2005, October 27)

Previous studies have described high levels of polychlorobiphenyls (PCB), p,p`-dichlordiphenyl-dichlorethen (DDT), p,p`-dichlordiphenyl-trichlorethan (DDE) and polybrominated diphenylether (PBDE) in the ... [more ▼]

Previous studies have described high levels of polychlorobiphenyls (PCB), p,p`-dichlordiphenyl-dichlorethen (DDT), p,p`-dichlordiphenyl-trichlorethan (DDE) and polybrominated diphenylether (PBDE) in the blubber of the harbour porpoise (Phocoena phocoena) from the North Sea raising the question of a potential endocrine disruption in this species. In the present study, the thyroids of 36 harbour porpoises from the British and the Belgian coast have been collected for histological and immunohistological investigations. The number and mean diameter of follicles and the relative distribution of follicular, connective and vascular tissues (%) were quantified in the thyroid of each individual. Then, the relationship between the thyroid morphometry data and previously described organic compounds (namely PCB, DDT, DDE and PBDE) was investigated using factor analysis and multiple regressions. The results of this work were compared to the previous study of harbour porpoises from the German (North and Baltic Seas), Norwegian and Icelandic coasts. Thyroid morphology was similar between the harbour porpoises from the British and Belgian coast. Compared to the previous study, the thyroids differed strongly between sampling sites. Porpoises from the German (North and Baltic Seas) and Norwegian coasts displayed a high percentage of connective tissues between 30 and 38% revealing severe inter-follicular fibrosis. The thyroids of Icelandic coasts displayed only a light inter-follicular fibrosis (percentage of connective tissue of 3%). The thyroids of the porpoises from the British and Belgian coasts occupied an intermediary place with a moderate fibrosis (percentage of connective tissue of 10%). A relation between mean diameter of follicles and the body size and mass suggesting a downward trend of activity of the thyroid with increasing body size and mass and thus, the age of the porpoises. A correlation-based principal component analysis (PCA) revealed one principal components explaining 69% of the total variance. The variables PCB, PBDE, DDT, and DDE compounds loaded highest on PC1. Our results pointed out a relationship between PCBs, PBDE, DDE and DDT (PC1) compounds and interfollicular fibrosis in the thyroids of harbour porpoises from the German coast of the Baltic Sea. The present report supports the hypothesis of a contaminant-induced thyroid fibrosis in harbour porpoises raising the question of the long term-viability in highly polluted areas [less ▲]

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See detailAnkle-Brachial blood pressure index in hemodialyzed patients.
Saint-Remy, Annie ULg; Sumaili, Ernest; XHIGNESSE, Patricia ULg et al

Conference (2005, October 22)

Detailed reference viewed: 9 (6 ULg)
See detailLes arts du spectacle à Liège dans les années 70
Delhalle, Nancy ULg

Conference (2005, October 22)

Detailed reference viewed: 19 (4 ULg)
See detailIntroduction
Vrancken, Didier ULg

Conference (2005, October 14)

Detailed reference viewed: 3 (1 ULg)
See detailVaricella zoster virus infection: not always benign...but preventable
Sadzot, Catherine ULg

Conference (2005, October 12)

Varicella-Zoster virus (VZV) is a Herpesvirus responsible for both varicella or chickenpox, a common and highly contagious childhood infectious disease and zoster or shingles, a clinical manifestation of ... [more ▼]

Varicella-Zoster virus (VZV) is a Herpesvirus responsible for both varicella or chickenpox, a common and highly contagious childhood infectious disease and zoster or shingles, a clinical manifestation of the viral reactivation, whose frequency increases with age. VZV infection is generally and wrongly regarded as a benign childhood disease: although it remains mild in the vast majority of cases, it can be associated with complications such as secondary skin bacterial infection, pneumonia, central nervous system dysfunction or Reye’s syndrome, and can even be occasionally fatal. The seriousness of VZV infection and its impact on health economic issues is becoming clearer as epidemiologic and pharmacoeconomic data become available. However, varicella is a vaccine preventable infectious disease since a live attenuated varicella vaccine based on the Oka Japanese VZV strain vaccine has been developed in the 1970s. The most widely used vaccine are Varilrix (GlaxoSmithKine) and Varivax (Merck & Co). A routine varicella vaccination programme targeting all healthy individuals over 1 year of age has been initiated in the US in 1995 and more recently in Canada and Australia. Vaccination is also recommended for susceptible healthy individuals at high risk if exposure. After a 10 years US experience, the vaccines have been shown to have a very good safety profile, to be well-tolerated and highly immunogenic and to provide around 85% protection against illness. When contracted after vaccination, what happens in a low percentage or cases, the disease remains mild and referred to as breakthrough. Immunity appears to assure a long-term protection. Although such a universal childhood vaccination as well as a vaccination of adults and adolescents without history of chickenpox is recommended by the WHO, Europe appears to be more reluctant to varicella vaccination. Due to health policies that are different from one European country to another, the situation is not yet uniform. Although varicella vaccine is actually licensed and recommended for high risk patients in most European countries, it has been included in a routine immunisation schedule solely in Germany in July 2004 and more recently in Sicily. The reluctance to the introduction of varicella vaccination is certainly due to the concern that low levels of coverage could increase the risk of delayed and thus more severe disease. The likelihood of achieving a high coverage rate, that could lead to a herd immunity and therefore avoid the problem of age-shift should be improved with a tetravalent vaccine which combine the existing measles-mums-rubella (MMR) vaccine for which high coverage levels are usually achieved with the varicella vaccine. Such a combined approach has already been approved by the FDA and has received a positive opinion at the European Medicines Agency. It will certainly help to implement, in the near future, the universal varicella vaccination. [less ▲]

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See detailFutur et modalité : le paradigme du Futur III en néo-égyptien
Polis, Stéphane ULg

Conference (2005, October 09)

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See detailEssai d'adpatation de l'index de handicap vocal (VHI) à la voix chantée.
Morsomme, Dominique ULg

Conference (2005, October 09)

L’index de handicap vocal de Jacobson et al (Voice Handicap Index) ne traduit pas les difficultés éprouvées par le chanteur. Notre étude vise à adapter le Voice Handicap Index à la voix chantée et à en ... [more ▼]

L’index de handicap vocal de Jacobson et al (Voice Handicap Index) ne traduit pas les difficultés éprouvées par le chanteur. Notre étude vise à adapter le Voice Handicap Index à la voix chantée et à en évaluer la fiabilité et la cohérence. Pour obtenir cette première échelle, nous avons procédé selon trois étapes. La première a consisté à modifier les items et à en créer d’autres. La deuxième nous a amené à mesurer la stabilité test-re test et la cohérence interne des items adaptés ou créés sur des groupes de chanteurs dysodiques et des professionnels de la voix. La troisième étape a consisté à évaluer la fiabilité et la cohérence de 31 items sur une population homogène de 132 chanteurs classiques avec et sans trouble vocal répartis en trois groupes. Le premier groupe comprenait 95 chanteurs normophoniques, le deuxième 37 chanteurs dysphoniques et le troisième constituait le groupe contrôle avec 20 sujets non chanteurs sans plainte vocale. Les résultats statistiques montrent une bonne stabilité test-retest (ICC=0.949 ; Rho : 0.912 ; Bland et Altman [-010.19, +13.23]. La cohérence interne de chaque sous échelle (alpha de Cronbach) est bonne (>0.70). Les corrélations entre les trois sous-échelles sont modérées (rho entre sous échelles fonctionnelle et émotionnelle : 0.58 ; entre émotionnelle et physique : 0.64 ; et entre fonctionnelle et physique : 0.78). Chaque sous-échelle mesure une dimension particulière tout en restant homogène entre elles. Quatre variables ont une influence significative sur les résultats: la pathologie (p<0.001), le fait d’être chanteur professionnel (p<0.001), l’effet de la répétition (p=0.003), le fait d’être choriste (p=0.002). Le V.H.I. adapté aux chanteurs se révèle fiable, valide et adapté à la population de chanteurs classiques dysodiques. [less ▲]

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See detailAmphibia-Reptilia: Editorial report 2003-2005
Denoël, Mathieu ULg

Conference (2005, October 01)

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See detailPourquoi tant de flux d’élèves dans les écoles en discrimination positive
Bouchat, Thérèse-Marie; Hindryckx, Geneviève ULg

Conference (2005, October)

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See detailHigh-resolution X-ray microtomography to determine the kinetics of water vapour adsorption
Lodewyckx, Peter; Léonard, Angélique ULg; Blacher, Silvia ULg

Conference (2005, October)

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See detailDating architectural ceramics by luminescence methods: actual state and potentials
Guibert, Pierre; Vieillevigne, Emmanuelle; Bechtel, Françoise et al

Conference (2005, October)

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