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Peer Reviewed
See detailCyanobacterial sequences retrieved directly from the Great Sippewissett Salt Marsh, MA, USA
Dillon, Jesse; Wilmotte, Annick ULg

in Bulletin de l'Institut Océanographique. Numéro spécial (1999), 19

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See detailCyanobacterial 
molecular 
diversity 
and distribution 
in 
microbial 
mats from 
antarctic 
lakes
De Carvalho Maalouf, Pedro ULg; Lambion, Alexandre ULg; Zakhia, Frédéric et al

Poster (2009, December 11)

The coastal deglaciated areas of Antarctica hold lakes and other water bodies with a wide spectrum of limnological conditions. Aquatic habitats offer milder conditions to the microorganisms, which are the ... [more ▼]

The coastal deglaciated areas of Antarctica hold lakes and other water bodies with a wide spectrum of limnological conditions. Aquatic habitats offer milder conditions to the microorganisms, which are the only permanent inhabitants of this glacial desert. Among them, cyanobacteria are the first photosynthetic colonisers, sometimes forming thick, cohesive and pigmented benthic mats. In the frame of the BELSPO AMBIO project (Antarctic Microbial BIOdiversity, influence of geographical and ecological factors, www.ambio.ulg.ac.be), we have obtained benthic mat samples coming from lakes from various coastal regions of the continent (MERLIN 2007 and BELARE 2007 field campaigns and by collaborations). We have investigated cyanobacterial molecular diversity via Polymerase Chain Reaction and Denaturating Gradient Gel Electrophoresis (PCR-DGGE) on a set of 80 samples. We couple the numerical analysis of the obtained band patterns with the phylogenetic analysis of the sequences, and by using multivariate analysis, we will assess the role of the ecological and geographical factors shaping the distribution and the diversity of cyanobacteria. Preliminary results of the analysis of 13 samples seem to indicate that lakes separated by a small distance have different cyanobacterial communities, highlighting the importance of ecological factors. Fifty per cent of the obtained Operational Taxonomic Units (OTUs) are potentially endemic to Antarctica while others seem to have a global distribution. The completed study will give us a wide scale view on the distribution and the diversity of cyanobacteria in two biogeographical zones: Continental Antarctica and Maritime Antarctica. Finally, our studies will supply new data and arguments for the ongoing “everything is everywhere, but the environment selects” debate concerning microbial biogeography. [less ▲]

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Peer Reviewed
See detailThe cyanophyte Arthrospira fusiformis from Mozambique, Africa: Morphological and molecular characterization
Mussagy, Aidate; Wilmotte, Annick ULg; Cronberg, Gertrud

in Algological Studies (2006), 121

The morphology and the Internally Transcribed Spacer sequences of two Arthrospira (Cyanobacteria) strains with tightly coiled and loosely coiled trichome, isolated from waste water treatment ponds in ... [more ▼]

The morphology and the Internally Transcribed Spacer sequences of two Arthrospira (Cyanobacteria) strains with tightly coiled and loosely coiled trichome, isolated from waste water treatment ponds in Maputo, Mozambique, were investigated. According to the accepted traditional classification the tightly coiled strains were assigned as Arthrospira fusiformis and the loosely coiled as Arthrospira maxima. In both clonal cultures, initiated from a tightly coiled (strain 1) or a loosely coiled trichome (strain 2), different variants arose, in which the tightly coiled forms were more lax than the inoculated cloned trichomes, and loosely coiled forms became tightly coiled. In both cultures, different transient forms appeared, and even straight trichomes were observed. The straight form (variant 1) was isolated and cultivated under different light intensities. After two months, this straight form had not changed into coiled trichomes. However, the trichomes obtained after growth of the hormogonia of the straight trichomes contained a mixture of loosely coiled and straight trichomes.On the basis of the morphological analysis of Arthrospira, it is evident that the degree of coiling is highly variable, which creates uncertainty when used to define the different species. The DNA from the two clonal strains 1 and 2 was isolated and a part of the rRNA operon (including the 3' end of the 16S rRNA gene and the Internally Transcribed Spacer) was determined after amplification by PCR using specific primers. The two ITS sequences were identical and belonged to the subcluster I.A., as defined by Baurain et al. (2002). Variant 1 gave also an identical ITS sequence. A PCR to test the presence of mcyE, a gene involved in the synthesis of the microcystin synthetase, was negative for the two strains and the variant 1. This study showed that for a reliable identification of Arthrospira species, information from specimens collected in the field, cultured strains, developmental stages, and molecular analysis, should be combined. [less ▲]

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Peer Reviewed
See detailCyanures et thiocyanates en toxicologie hospitalière
Charlier, Corinne ULg; Gougnard, Th; Lamiable, D. et al

in Annales de Toxicologie Analytique (2000), XII(2), 131-136

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See detailCybearctivistes et société civile. Les ambigüités de la révolution tunisienne
Lecomte, Romain ULg

Article for general public (2011)

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See detailLes cyber-taureaux des vétérinaires liégeois
Durand, Pascal ULg

Article for general public (1996)

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See detailCybercontestation tunisienne
Lecomte, Romain ULg

Article for general public (2011)

Les récents soulèvements arabes ont conduit nombre de journalistes et experts à se focaliser sur le rôle décisif d'Internet dans les mobilisations. Autant les usages contestataires d'Internet dans le ... [more ▼]

Les récents soulèvements arabes ont conduit nombre de journalistes et experts à se focaliser sur le rôle décisif d'Internet dans les mobilisations. Autant les usages contestataires d'Internet dans le monde arabe étaient jusque là largement ignorés, par les médias traditionnels (occidentaux ou non) mais aussi par le monde académique, autant désormais on observe une surenchère sur le rôle révolutionnaire des médias sociaux, souvent agrémentés de titres accrocheurs : « Révolution 2.0. », « Révolution Facebook », « Cyber-révolution »... À partir d'une recherche de doctorat portant sur les usages citoyens et contestataires d'Internet par les Tunisiens, je souhaiterais ici apporter un éclairage plus nuancé sur le rôle d'Internet dans ce petit pays du Maghreb où le « printemps arabe » est né, en prenant en considération à la fois son importance et ses limites. Je commencerai par poser le contexte contraignant dans lequel les internautes tunisiens devaient évoluer sous le régime de Ben Ali. Ensuite, je retracerai l'évolution des usages citoyens et contestataires d'Internet depuis la fin des années 90 jusqu'à aujourd'hui. Enfin, à la lumière de cette courte mais déjà riche histoire, je proposerai quelques éléments d'analyse du rôle d'Internet dans la conjoncture critique de décembre 2010-janvier 2011 en Tunisie. [less ▲]

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See detailCYBERDEPENDANCE : MYTHE OU REALITE ?
Triffaux, Jean-Marc ULg

Conference (2012, October 27)

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See detailCyberdépendance ? Réalité clinique ou invention psychopathologique ?
Lakaye, Ariane; Triffaux, Jean-Marc ULg

Article for general public (2012)

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See detailCyberdépendance? Une nouvelle forme d'addiction comportementale?
Triffaux, Jean-Marc ULg; Desert, Jean-Benoît ULg; Lakaye, Ariane

in Revue Médicale de Liège (2013), 68(5-6), 365-370

The speed of the development of new technologies of information and communication (I.C.T.) modified the mode of our intersubjective relations leading certain individuals to develop new forms of behavioral ... [more ▼]

The speed of the development of new technologies of information and communication (I.C.T.) modified the mode of our intersubjective relations leading certain individuals to develop new forms of behavioral dependence. If the majority of the users consume the Internet with moderation, 1 to 2% of the general population would suffer from “problematic use of the Internet” and /or of “Internet addiction”. These figures are to be taken with caution because of the lack of reliable epidemiologic data. If, beside the classical forms of addictions to the psychoactive substances, the concept of “addictions without drugs” is more and more the subject of scientific works, it is appropriate however not to call pathological all these new behaviours. We will approach in this article the clinical reality relating to the problematic or abusive use of new technologies with or without the Internet. We will then describe the possible therapeutic approaches that is ambulatory or in the form of day-hospitalization. Lastly, we will conclude with some recommendations to the attention of the relatives or the close friends. [less ▲]

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See detailLE CYBERKNIFE AIME LES DEFIS ! Aperçu d'indications pour la radiothérapie extracrânienne robotisée
JANVARY, Zsolt Levente ULg; JANSEN, Nicolas ULg; COUCKE, Philippe ULg

in Revue Médicale de Liège (2014), 69(Supp 1), 87-93

Toute l’histoire de la radiothérapie illustre la quête continue vers une distribution de dose la plus haute possible sur la cible tumorale, tout en réduisant au maximum l’irra - diation des tissus sains ... [more ▼]

Toute l’histoire de la radiothérapie illustre la quête continue vers une distribution de dose la plus haute possible sur la cible tumorale, tout en réduisant au maximum l’irra - diation des tissus sains. La radiothérapie en conditions stéréo - taxiques est la suite logique de cette évolution tant au niveau de la précision d’exécution du traitement qu’au niveau de la concentration de la dose, et donc de l’efficacité du traitement. Cette technique a d’abord été mise en application clinique pour des lésions intra-crâniennes. Une radiothérapie de haute précision ne peut être sensible aux mouvements incontrôlés de la cible. Vu la nécessité en clinique d’aborder les mêmes concepts de précision et d’efficacité pour des cibles extra-crâ - niennes, il a fallu développer des solutions qui permettent de tenir compte du mouvement de la cible. Les solutions infor - matiques et robotiques ont été combinées dans le concept du CyberKnife ® . Nous présentons cette technique particulière d’irradiation et voulons faire part de l’expérience des deux premières années acquise au CHU de Liège. Nous voulons également revoir les indications potentielles de cette radiothé - rapie de très haute précision [less ▲]

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Peer Reviewed
See detailCyberknife et pathologies bénignes
LALLEMAND, François ULg; JANVARY, Zsolt Levente ULg; JANSEN, Nicolas ULg et al

in Revue Médicale de Liège (2011), 66(11), 568-574

Conventional radiotherapy is known to be an effective treatment approach even for “benign” pathologies. However, this kind of treatment yields a high potential for side effects. The Cyberknife®, a robotic ... [more ▼]

Conventional radiotherapy is known to be an effective treatment approach even for “benign” pathologies. However, this kind of treatment yields a high potential for side effects. The Cyberknife®, a robotic stereotactic radiotherapy device, enables to offset a large proportion of the disadvantages encountered with conventional radiotherapy essentially through the high precision of dose administration and sparing of healthy tissues. Therefore, it seems to be a treatment of choice in the approach of some benign intracranial diseases. We review published data on indications and outcome of Cyberknife® for intracranial “non-malignant” disease. [less ▲]

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See detailCyberknife for lung tumors : the first Belgian experience at CHU Liege and initiated research projects
JANSEN, Nicolas ULg; COUCKE, Philippe ULg

Conference (2011, October 15)

Results are presented of the first Belgian Cyberknfe experience (robotic stereotactic radiotherapy of early lung cancer). Future research projects are detailed : (1) cost analysis (2) comparative ... [more ▼]

Results are presented of the first Belgian Cyberknfe experience (robotic stereotactic radiotherapy of early lung cancer). Future research projects are detailed : (1) cost analysis (2) comparative dosimetry (3) predictive markers for response [less ▲]

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See detailCycle de conférences relatives aux méthodes et innovations pédagogiques en enseignement supérieur
Hanzen, Christian ULg

Scientific conference (2014, May 20)

Ce cycle de conférences a pour but de sensibiliser les enseignants aux méthodes et moyens disponibles pour construire et évaluer une activité d’enseignement. 1. Qui suis-je 2. Les étudiants, quels ... [more ▼]

Ce cycle de conférences a pour but de sensibiliser les enseignants aux méthodes et moyens disponibles pour construire et évaluer une activité d’enseignement. 1. Qui suis-je 2. Les étudiants, quels étudiants 3. Les objectifs de formation 4. L’approche par compétences 5. L’apprentissage au raisonnement clinique 6. Les cartes conceptuelles 7. Comment saloper une présentation Power Point 8. Les boitiers de vote électronique 9. Les questions à choix multiples et les degrés de certitude 10. Le cycle de qualité d’une évaluation 11. Les class room assessments 12. Les Massive Online Open Courses [less ▲]

Detailed reference viewed: 58 (2 ULg)
Peer Reviewed
See detailLe cycle de Guillaume d’Orange ou les Aliscans rajeunis
Henrard, Nadine ULg

in Cazanave, Caroline; Houssais, Yvon (Eds.) Grands textes du Moyen Âge à l'usage des petits (2010)

Examen d'une douzaine de versions de récritures de la geste de Guillaume d'Orange parues entre 1905 et 1995 et destinées à la jeunesse

Detailed reference viewed: 52 (6 ULg)
See detailLe cycle des femmes vertueuses provenant de Herkenrode et sa restauration. Histoire et iconographie du cycle
Oger, Cécile ULg

in Denhaene, Godelieve (Ed.) Lambert Lombard, Peintre de la Renaissance. Liège 1505/06-1566 :Essais interdiscipinaires et catalogue de l'exposition (2006)

Detailed reference viewed: 38 (7 ULg)
See detailLe cycle des Femmes vertueuses provenant de Herkenrode et sa restauration. Le dessin sous-jacent
Oger, Cécile ULg

in Denhaene, Godelieve (Ed.) Lambert Lombard, Peintre de la Renaissance. Liège 1505/06-1566 :Essais interdiscipinaires et catalogue de l'exposition (2006)

Detailed reference viewed: 16 (6 ULg)