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See detailEcological Impacts of Invasive Plant Species
Vanderhoeven, Sonia ULg

Conference (2007)

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See detailDifferent approaches to measure environmental odours emitted by landfill areas
Romain, Anne-Claude ULg; Delva, Julien ULg; Nicolas, Jacques ULg

Conference (2007)

This paper presents different methods to assess the odour emission and the odour annoyance in the surroundings. It is shown, on the example of landfill areas and composting facilities, that chemical ... [more ▼]

This paper presents different methods to assess the odour emission and the odour annoyance in the surroundings. It is shown, on the example of landfill areas and composting facilities, that chemical analyses are helpful to identify key compounds of the odour release, and to set up the specification of a monitoring instrument. Sensitive methods, like dynamic olfactometry or sniffing team investigation, are mainly applicable to provide a global odour plume or an average annoyance zone. And the electronic nose can supply a warning signal to the plant manager or a real time estimation of the annoyance zone. [less ▲]

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See detailEHEC dialogue with eucaryotic cells
Mainil, Jacques ULg

Conference (2007)

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See detailClimatic differentiation of the invasive alien plant Senecio inaequidens (Asteraceae) during invasion
Monty, Arnaud ULg; Mahy, Grégory ULg

Conference (2007)

Despite the problems they cause, biological invasions represent a great opportunity to study large-scale plant evolution, e.g. in response to changing climate. Senecio inaequidens DC. is an herbaceous ... [more ▼]

Despite the problems they cause, biological invasions represent a great opportunity to study large-scale plant evolution, e.g. in response to changing climate. Senecio inaequidens DC. is an herbaceous perennial originating from South Africa. It was introduced as a wool alien in a few precise locations about one century ago and after a lag phase of several decades, started to spread rapidly throughout Europe and its contrasted climate. Our study uses common garden experiments to assess the differentiation of the species along both altitudinal and climatic gradients. Life history traits are measured and linked to climatic conditions of source populations. Results show that the species evolved along a climatic gradient from the Mediterranean to the high Pyrenean. This along-invasion differentiation can be linked to mean temperature evolution along the gradient and shows how an introduced species can potentially develop adaptations to new encountered thermic conditions in a length of time of several decades. How understanding the adaptive response of a plant to new climatic conditions will help anticipating the potential response of the flora to climate change is discussed. [less ▲]

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See detailQuark model: recent issues
Stancu, Floarea ULg

Conference (2007)

In the first part I briefly survey recent issues in constituent quark models raised by the observation of unusual hadronic states. In particular I discuss the role of higher Fock components in the wave ... [more ▼]

In the first part I briefly survey recent issues in constituent quark models raised by the observation of unusual hadronic states. In particular I discuss the role of higher Fock components in the wave function of baryons and the possible interpretation of open charm and of new charmonium-type resonances as tetraquarks. In the second part I show support for the quark model dynamics obtained in a model independent way from the 1/Nc expansion approach of QCD which proved to be successful in describing baryon properties. [less ▲]

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See detailOptimization of drug-cyclodextrin complexation reaction by a static supercritical carbon dioxide method
Brion, Michael; Nizet, Dominique; Piel, Géraldine ULg et al

Conference (2007)

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Peer Reviewed
See detailKnowledge-aided Array Calibration for Registration-based Range-dependence Compensation in Airborne STAP Radar with Conformal Antenna Arrays
Ries, Philippe; Lesturgie, Marc; Lapierre, Fabian D. et al

Conference (2007)

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See detailPARTICIPATION OF ULG STUDENTS TO THE SSETI MICROSATELLITE PROGRAMME USING SAMCEF
Bolland, M.; COLLIGNON, G.; VANDENPLAS, X. et al

Conference (2007)

The objective of this presentation is to discuss the participation of students at the University of Liège to the educational spacecraft project SSETI-ESEO proposed by the European Space Agency. SSETI ... [more ▼]

The objective of this presentation is to discuss the participation of students at the University of Liège to the educational spacecraft project SSETI-ESEO proposed by the European Space Agency. SSETI students are now mainly involved in the ESEO satellite for which the University of Liège is in charge of the MECH work package. The students have to propose a design for the structure of the solar panels (including the geometry and materials) and their deployment and pointing mechanisms (including electrical circuits, motors, hinges and actuators). Through detailed finite element computations in the SAMCEF software, they have to verify the structural integrity of the panels during the launch phase and to guarantee a safe deployment once on-orbit. Another task is to ensure an appropriate orientation of the solar panels to collect the maximum power from the sun. An industrial partner specialized in the development of computer-aided engineering solutions, SAMTECH, and a research center, Liège Space Center (CSL), also bring their expertise to the project. [less ▲]

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See detailLEODIUM project and student space activities at the University of Liege
Vandenrijt, Jean-François ULg; Rochus, Pierre ULg; Kerschen, Gaëtan ULg et al

Conference (2007)

the origin of the LEODIUM project which stands for Low Earth Orbit Demonstration of Innovations in University Mode. This project aims to create student pico- or nano-satellites. There is a strong ... [more ▼]

the origin of the LEODIUM project which stands for Low Earth Orbit Demonstration of Innovations in University Mode. This project aims to create student pico- or nano-satellites. There is a strong motivation coming from the students and from the academic members to promote space. Being unexperienced in complete satellite design, as a first step in this direction, we started working with the ESA funded SSETI association. At the moment, two teams of students are working on SSETI satellites. One is working as the MECH team which is in charge of the design of the sun-pointing solar panels of the European Student Earth Orbiter (ESEO) satellite mechanisms, the other team is working on the phase-A studies of the Narrow Angle Camera (NAC) which will be the core payload of the European Student Moon Orbiter (ESMO) satellite, both in collaboration with local industrials. The students are mainly working on ESEO and ESMO as part of their master thesis. In addition to that, two PhD students are in charge of the coordination of the teams (one for the ESEO team and another for the ESMO team). They will also be the link between previous and new students every times an overlap will occur and ensure that information is not lost during the transition. In this paper, we will describe the current design and the achievements on the ESEO solar panels and the ESMO NAC camera. Explanation will also be given on how the collaboration between the local student and the SSETI association is managed. Finally, we will briefly introduce the prospective for the LEODIUM project. [less ▲]

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See detailIAS Mesoscale Surface Circulation Observed Through Satellite Altimetry and its Influence in a Small Scale, Coastal Domain, Studied with a ROMS Model of the Cariaco Basin
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Virmani, J. I. et al

Conference (2007)

The Intra-Americas Sea (IAS) surface circulation is characterized by large scale currents. The Caribbean current, which originates in the Lesser Antilles, travels westwards through the Caribbean Sea and ... [more ▼]

The Intra-Americas Sea (IAS) surface circulation is characterized by large scale currents. The Caribbean current, which originates in the Lesser Antilles, travels westwards through the Caribbean Sea and eastern Mexico and passes through the Gulf of Mexico to finally form the Gulf Stream. This complex system of currents is also characterized by a high mesoscale variability, such as eddies and meanders. The objectives of this work are twofold: first, the multi-scale surface circulation of the IAS is described using satellite altimetry. The topographic influence of the different basins forming the IAS, the characteristic time and spatial scales, and the time variability of the surface circulation will be addressed. The second objective is to analyze the influence of this large scale circulation on a small scale coastal domain with a ROMS-based model of the Cariaco basin (Venezuela). Cariaco is a deep (1400 m), semi-enclosed basin connected to the open ocean by two shallow channels (Tortuga and Centinela Channels). Its connection with the open sea, and therefore the ventilation of the basin, occurs in the surface layers. The Cariaco ROMS model will be used to study the exchanges of mass, heat and salt through the channels. A 1/60 degree ROMS model nested in the global 1/12 degree HYCOM model from the Naval Research Laboratory will be used for this study. In addition, a series of observations (satellite altimetry and in situ temperature, salinity and velocity data), will be used to assess the influence of the Caribbean circulation on the basin. [less ▲]

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See detailWhat about concrete in the next thirty years ?
Courard, Luc ULg

Conference (2007)

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See detailPhase I/IIclinical trial of local GM-CSF application in patients with cervical HPV-associated low grade squamous intraepithelial lesions
Hubert, Pascale ULg; Doyen, Jean ULg; Chapelle, X. et al

Conference (2007)

Background: Quantitative and functional alterations of professional antigen-presenting cells (APC) in SIL suggest that these lesions may have a diminished capacity to capture viral antigens. Moreover, GM ... [more ▼]

Background: Quantitative and functional alterations of professional antigen-presenting cells (APC) in SIL suggest that these lesions may have a diminished capacity to capture viral antigens. Moreover, GM-CSF (whose production is decreased in HPV-transformed keratinocytes) is an essential factor for the migration of APC in cervical (pre)neoplastic lesions formed in vitro and transplanted in vivo on mouse. In this study we performed a phase I/II clinical trial in order to determine whether a local application of GM-CSF on cervical low-grade squamous intraepithelial lesions (LSIL) might increase the recruitment of APC into the epithelium and indirectly the viral antigen presentation to the immune system. Methods: Fifteen patients with LSIL (10 GM-CSF and 5 placebo) were enrolled in this study. Patients received 4 GM-CSF applications (or placebo gel) and were followed during 6-7 months. APC infiltration was quantified by immunostaining with anti-CD1a mAb. Cellular immune response was evaluated by using an IFN-gamma intracellular staining on PBMC stimulated in vitro with the E7 HPV16 protein and L1 HPV16 Virus-like particles (VLP). Hybrid capture was performed to semi-quantify the viral DNA in cervical brush specimens. Results: GM-CSF applications were well tolerated in all patients. No difference in the cytological/histological and viral parameters assessed at 2 and 6 months after the last application was observed between the GM-CSF and the placebo group. An increased number of CD1a+ APC was observed in 6/10 patients treated by GM-CSF compared to 1/5 patient in the placebo group. There was an increased immune response against HPV in the GM-CSF group showed by NK and T cells producing IFN-gamma. [less ▲]

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See detailThe Pregnancy-Associated Glycoproteins: Biochemical Aspects and Clinical Application for Pregnancy Follow-up
Melo de Sousa, Noelita ULg; Barbato, O.; Bella, Amina ULg et al

Conference (2007)

Pregnancy diagnosis is an important part in reproduction management of ruminants. In the last years, a large polymorphic family of placenta-expressed proteins has been discovered in ruminant species and ... [more ▼]

Pregnancy diagnosis is an important part in reproduction management of ruminants. In the last years, a large polymorphic family of placenta-expressed proteins has been discovered in ruminant species and used for pregnancy diagnosis. Members of this family are named pregnancy-associated glycoproteins (PAG), being synthesized in the mono- and binucleate cells of the ruminant’s trophectoderm. Part of them are released in the maternal blood circulation where they can be assayed by different laboratory techniques. Due to large variety of expressed molecules and to large variations in the post-translational processing of the PAG, different immuno-systems present different ability to quantify the PAG released in blood. The sensitivity (92 to 100%) and specificity of PAG radioimmunoassay when used for pregnancy diagnosis are very high. The assay of PAG can also bring very interesting information for researchers working in programs focused on the study of embryonic and fetal mortalities, as well as on embryo biotechnology (ET, FIV, clonage), animal nutrition, or infections diseases resulting in pathologies affecting the pregnancy. [less ▲]

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See detailThermal and structural behavior of blends made of palm oil, anhydrous milk fat or their fractions.
Braipson, Sabine ULg; Gibon, Véronique; Deroanne, Claude

Conference (2007)

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See detailSperm quality and cryopreservation in Perca fluviatilis
Linhart, Ottomar; Alavi Hadi, S. M.; Rodina, M. et al

Conference (2007)

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See detailReconstitution of Holocene El Niño Cycles in Southern America from High-Resolution Lake Sediments.
Boes; Loutre; De Batist et al

Conference (2007)

Detailed reference viewed: 10 (0 ULg)
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See detailExperimental validation protocol for micro-CT as screening tool for bone tissue engineering scaffolds
Kerckhofs, Greet ULg; Schrooten, Jan; Van Cleynenbreugel, Tim et al

Conference (2007)

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See detailTwo millennia of atmospheric lead and heavy metal pollution in Belgium : a record from an ombrotrophic peat bog
De Vleeschouwer; Gerard; Goormaghtigh et al

Conference (2007)

Detailed reference viewed: 2 (1 ULg)
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See detailGivetian megaspores from Libya and Belgium
Steemans, Philippe ULg; Breuer, P.; Gerrienne, Philippe ULg et al

Conference (2007)

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See detailA new interpretation of the Io UV footprint morphology
Bonfond, Bertrand ULg; Grodent, Denis ULg; Gérard, Jean-Claude ULg et al

Conference (2007)

The electromagnetic interaction between Io and the jovian magnetic field leads to an auroral UV footprint consisting of single or multiple UV spots in both jovian hemi- spheres. According to current ... [more ▼]

The electromagnetic interaction between Io and the jovian magnetic field leads to an auroral UV footprint consisting of single or multiple UV spots in both jovian hemi- spheres. According to current theories, the perturbation induced by the motion of Io in the plasma torus propagates along the field lines in the form of Alfvén waves and finally causes electron precipitation in the jovian ionosphere. The occurrence and mul- tiplicity of the secondary spots appear to be related to the position of Io in the plasma torus and have been attributed to partial reflections of the Alfvén waves on the torus boundaries. Nevertheless, the discrepancies between the predicted inter-spot distances and the measurements were found difficult to explain. Additionally, some crucial con- figurations of Io in the torus had never been observed. Our recent HST/ACS observations of the footprint in so far unexplored Io-plasma torus configurations lead to the finding of a new feature in the footprint: a faint spot upstream of the main spot. The observations of this precursor emission, together with the inconsistencies related to the inter-spot distances, suggest a new interpretation of the footprint morphology. We propose that the precursor and the first secondary spot stem from the same mechanism and we interpret them as the counterparts of the main spot occurring in the opposite hemisphere. [less ▲]

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See detailHow does the age of hoverfly females affect their reproduction?
Almohamad, Raki; Verheggen, François ULg; Francis, Frédéric ULg et al

Conference (2007)

Detailed reference viewed: 9 (2 ULg)
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See detailProsody and foreign language learning
Rasier, Laurent ULg

Conference (2007)

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See detailOsteoblast : a cell under compression
Sanchez, Christelle ULg

Conference (2007)

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See detailThe development of extended type noun uses : a comparison between English sort/kind and French sorte/espèce
Brems, Lieselotte ULg; Willemse, Peter; Davidse, Kristin

Conference (2007)

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See detailAssimilation of High-Frequency Radar Currents in a Nested Model of the West Florida Shelf
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Weisberg, R. H.

Conference (2007)

High-frequency radar currents are assimilated in a West Florida Shelf (WFS) model based on the Regional Ocean Model System (ROMS), which is nested in the Atlantic Hybrid Coordinate Ocean Model (HYCOM) for ... [more ▼]

High-frequency radar currents are assimilated in a West Florida Shelf (WFS) model based on the Regional Ocean Model System (ROMS), which is nested in the Atlantic Hybrid Coordinate Ocean Model (HYCOM) for the purpose of including both local and deep-ocean forcing, particularly the Gulf of Mexico Loop Current. Tides are not included in this model. An ensemble simulation of the WFS model is carried out under different wind-forcings in order to estimate the error covariance of the model state vector and the covariance between ocean currents and winds. Radial currents measured by high-frequency radar antennas near Saint Petersburg and Venice, Florida, USA, are assimilated using this ensemble-based error covariance. Different assimilation techniques using a time-average ensemble, a filter to reduce surface-gravity waves and an extended state vector including wind stress were tested. Results of the WFS model assimilating surface currents show an improvement of the model currents not only at the surface but also at depth. [less ▲]

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See detailLe marché et l'état à l'heure de la mondialisation
Bourgeois, Marc ULg

Conference (2007)

Detailed reference viewed: 8 (1 ULg)
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See detailMaximum-likelihood Based Range-dependence Compensation for Coherent Multistatic STAP-based Radar
Neyt, Xavier; Acheroy, Marc; Verly, Jacques ULg

Conference (2007)

Detailed reference viewed: 6 (0 ULg)
See detailPsychanalyse et psychothérapie psychanalytique
Naziri, Despina ULg

Conference (2007)

Detailed reference viewed: 20 (0 ULg)
See detailHousehod dynamics and the well-beeing after partnership dissolution
Bould, S.; Hartmann, P.; Schmaus, G. et al

Conference (2007)

Detailed reference viewed: 6 (0 ULg)
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See detailDevelopment of discontinuous Galerkin method for linear strain gradient elasticity
Chandran, Ram B; Noels, Ludovic ULg; Radovitzky, Raul

Conference (2007)

Detailed reference viewed: 12 (1 ULg)
See detailInterest of DOC in the study of consciousness
Vanhaudenhuyse, Audrey ULg

Conference (2007)

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See detailInfluence of water exchanges on the gallery convergence
Gerard, Pierre ULg; Charlier, Robert ULg; Chambon, René et al

Conference (2007)

Detailed reference viewed: 21 (6 ULg)
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See detailLe tétras lyre dans les Hautes-Fagnes : quarante ans de suivis - dix ans d'actions.
Poncin, Pascal ULg; Keulen, Christine; Loneux, Michèle ULg et al

Conference (2007)

Detailed reference viewed: 6 (0 ULg)
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See detailTestostérone et troubles de l'humeur
Scantamburlo, Gabrielle ULg

Conference (2007)

Detailed reference viewed: 10 (1 ULg)
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See detailEvaluations plurielles : concepts et défis
Vandoorne, Chantal ULg; Demarteau, Michel

Conference (2007)

Detailed reference viewed: 22 (11 ULg)
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See detailEnhancement of the relaxation of SiGe layers by He ion implantation using a delta-Si:C layer
Buca, D.; Goryll, M.; Holländer, B. et al

Conference (2007)

Detailed reference viewed: 3 (0 ULg)
See detailUitspraakonderwijs en communicatieve aanpak: nog steeds een onmogelijke liefde?
Rasier, Laurent ULg; Hiligsmann, Philippe

Conference (2007)

Detailed reference viewed: 7 (0 ULg)
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See detailA multi-scale strategy for the modelling of failure in masonry plates and shells
Massart, Thierry J.; Mercatoris, Benoît ULg; Diaby, Adama

Conference (2007)

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See detailVoix et regards de femmes : Francesca Caccini, Barbara Strozzi
Corswarem, Emilie ULg

Conference (2007)

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See detailApplication of Laser Induced Breakdown Spectroscopy (LIBS) to the determination of transition probabilities of laser lines in Au II spectrum
Ortiz, M.; Mayo, R.; Biémont, Emile ULg et al

Conference (2007)

Experimental branching fractions for laser lines arising from excited states of 5d97s configuration of Au II have been determined by application of Laser Induced Breakdown Spectroscopy (LIBS). The ... [more ▼]

Experimental branching fractions for laser lines arising from excited states of 5d97s configuration of Au II have been determined by application of Laser Induced Breakdown Spectroscopy (LIBS). The experimental relative transition probabilities were converted into an absolute scale using theoretical values for the radiative lifetimes of the corresponding states, calculated in this work. Transition probabilities and radiative lifetimes have been determined by a relativistic Hartree - Fock method taking configuration interaction and core-polarization effects into account. A comparison of the present results with the available theoretical values has been made and shows a reasonable agreement although discrepancies are observed between theory and experiment for some transitions. [less ▲]

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See detailLa coopération unversitaire belgo-congolaise
Rubbers, Benjamin ULg; Petit, Pierre

Conference (2007)

Detailed reference viewed: 13 (2 ULg)
See detailExposer l'art conceptuel: entre oeuvre d'art et concept
Eloy, Céline ULg

Conference (2007)

Detailed reference viewed: 27 (0 ULg)
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See detailMercury in the blood of free ranging pinnipeds: levels, sources of variation, toxicocinetic and potential impact using an in vitro model
Das, Krishna ULg; Gillet, Marie-Claire ULg; Habran, Sarah ULg et al

Conference (2007)

Despite 30 years of international regulations, Hg levels in marine mammals have not decreased. Various environmental models even suggest a rise of mercury in the biota during the next decades, linked to ... [more ▼]

Despite 30 years of international regulations, Hg levels in marine mammals have not decreased. Various environmental models even suggest a rise of mercury in the biota during the next decades, linked to climate change. The objective of this study is (1) to assess Hg levels in blood samples of free-ranging pinnipeds, (2) to understand level variation during different periods of life (gestation, lactation, fasting) and potential impact on lymphocytes using a preliminary in vitro model (peripheral blood mononuclear cells, PBMC). Blood samples were collected from harbour seals (Phoca vitulina n= 22) from the North Sea and from elephant seals from the Californian coast (Mirounga angustirostris 12 females and 12 pups). Harbour seal PBMC were isolated, set in medium culture and contaminated with methyl-Hg (1 µM). Biological tests and proteomic assay were realized on control and contaminated PBMC. Hg levels were from the same order of magnitude for the two species despite two different lifestyles and habitats: from 40 to 590 ng.g-1 fw in harbour seal and from 63 to 919 ng.g-1 fw in elephant seal. Hg concentrations in the blood depend upon several factors such as body weight, fasting and lactation duration for mothers and pups. After 21 days of lactation, female elephant seals doubled their blood Hg levels (from 308 to 593 ng.g-1fw) while a decrease is observed for pups. This increase is linked to mobilization from blubber and muscle during fasting associated to lactation. Cell model revealed an in vitro effect of Hg even at low concentration (1µM). Number of PBMC, viability, metabolic activity, DNA and RNA synthesis were reduced in vitro suggesting deleterious effects of Hg in concentrations encountered in free-ranging pinnipeds. Knowing that Hg methylation in the ocean is linked to temperature, one can wonder on Hg levels (and effects) in pinnipeds during the next decades. [less ▲]

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See detailNew methodology for generating realistic data for evaluation of performance of radar STAP algorithms
Ries, Philippe; Tey, Shuwen; Verly, Jacques ULg et al

Conference (2007)

Detailed reference viewed: 5 (0 ULg)
See detailGeneration of Dicke states in Distant Matter Qubits with Linear Optics
Thiel, C.; von Zanthier, J.; Bastin, Thierry ULg et al

Conference (2007)

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See detailLa situation économique de la culture des céréales en Belgique
Burny, Philippe ULg

Conference (2007)

Detailed reference viewed: 2 (0 ULg)
See detailCreation of Dicke States in Distant Qubits with Linear Optics
Thiel, C.; von Zanthier, J.; Bastin, Thierry ULg et al

Conference (2007)

Detailed reference viewed: 5 (0 ULg)
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See detailGESTION DU RISQUE LORS DU TRANSFERT DE METHODES ANALYTIQUES – CAS D’UNE METHODE BIOANALYTIQUE
Rozet, Eric ULg; Dewe, W.; Morello, R. et al

Conference (2007)

Detailed reference viewed: 20 (2 ULg)
See detailY a-t-il un discours universitaire dans la salle (de cours)?
Defays, Jean-Marc ULg

Conference (2007)

Detailed reference viewed: 18 (2 ULg)