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See detailConsequences of cannabis use in schizophrenia patients
Boulanger, Marie ULg; Blairy, Sylvie ULg

Poster (2007, October 26)

Previous research has shown that the ability to organize information for remembering in an intentional and strategic way is impaired in schizophrenia patients (Rizzo et al., 1996) and that the remembering ... [more ▼]

Previous research has shown that the ability to organize information for remembering in an intentional and strategic way is impaired in schizophrenia patients (Rizzo et al., 1996) and that the remembering is accompanied by a low level of autonoetic awareness (Danion et al., 1999). Chronic and heavy uses of cannabis induce cognitive impairments. These impairments persist while the user remains intoxicated, and may or may not be reversible after prolonged abstinence from cannabis (Lundqvist, 2005). The aim of the present study was to investigate whether past cannabis use may reduce more subtle deficits in neurocognitive functioning such as deficit of the specificity of autobiographical memories and the associated level of autonoetic awareness in a population of schizophrenia patients. The TEMPau (Piolino, 2000) was used to evaluate the autobiographic memory and the level of autonoetic consciousness. Participants were asked to generate 3 specific memories for four life periods (0-9 years old, 10-19 years old, after 20 years old and the last 12 months). Performances from 6 past cannabis use schizophrenia patients were compared to performances of 8 schizophrenia patients no users. Patients were not treated with benzodiazepines. The analysis revealed a significant group difference for the 10-19 years old period for the specificity of autobiographical memories ( t2,11 = 2.3 ; p = 0.041). Past cannabis users reported less specific events (m = 6.83 (1.94)) compared to the no users patients (m = 9.14 (1.67)). The implications of this result will be discussed. [less ▲]

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See detailIonosphere Modelling for GALILEO Single Frequency Users
Bidaine, Benoît ULg; Warnant, René ULg

Poster (2007, October 17)

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See detailThe nature and evolution of working memory deficits in multiple sclerosis
DELRUE, Gaël ULg; Caps, Emilie; Gryglewicz, Céline et al

Poster (2007, October 12)

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See detailContribution to the valorisation of pomegranate (Punica granatum L.)
Bchir, Brahim ULg; Roiseux, Olivier; Attia, Hamadi et al

Poster (2007, October 11)

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See detailSelective thermal denaturation of Pisum sativum L. proteins using salt.
Dehon, Lydie; Deroanne, Claude; Blecker, Christophe ULg

Poster (2007, October 11)

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See detailInfluence of hydratation time and ambient humidity on the adhesion of food particle aggregates.
Detry, Jean; Deroanne, Claude; Sindic, Marianne ULg

Poster (2007, October 11)

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See detailCyanobacterial diversity at Utsteinen: The impact of the “zero emission” research station in Antarctica
Fernandez Carazo, Rafael ULg; Ertz, Damien; Wilmotte, Annick

Poster (2007, October 11)

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See detailEnzymatic synthesis of sugar esters obtained from renewable stabilized by dairy components.
Torezan, Gabriela; Ronkart, Sébastien; Paquot, Michel ULg et al

Poster (2007, October 11)

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See detailBio-cracking of sugar beet leaves targeting on Rubisco.
Akpa, Eric; Paquot, Michel ULg; Deroanne, Claude et al

Poster (2007, October 11)

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See detailEffect of moisture uptake on amorphous inulin properties.
Ronkart, Sébastien; Paquot, Michel ULg; Fougnies, C. et al

Poster (2007, October 11)

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See detailContribution to the valorization of^pomegranate (Punica granatum L.)
Bchir, Brahim; Roiseux, Olivier; Attia, Hamadi et al

Poster (2007, October 11)

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See detailExtraction of ferulic acid from Walloon agro-industrial by-products.
Barberousse, Hélène; Roiseux, Olivier; Deroanne, Claude et al

Poster (2007, October 11)

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See detailCharacterization of the physical state of spray-dried inulin.
Ronkart, Sébastien; Deroanne, Claude; Paquot, Michel ULg et al

Poster (2007, October 11)

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See detailThe milk fat globule membrane MFGM : natural source of functional compounds.
Bodson, Pascal; Vanderghem, Caroline ULg; Danthine, Sabine ULg et al

Poster (2007, October 11)

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See detailInteraction between the vaccine of cervical cancer associated and natural killer (NK) cells
Renoux, Virginie ULg; Longton, Laurence; Dortu, Estelle ULg et al

Poster (2007, October 11)

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See detailTop-Down Proteomics using Matrix-Enhanced ISD
Demeure, Kevin ULg; Quinton, Loïc ULg; Gabelica, Valérie ULg et al

Poster (2007, October 11)

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See detail"Trans-free" food products formulation : Thermal behavior of "trans-free" fat blends.
Danthine, Sabine ULg; Blecker, Christophe ULg; Deroanne, Claude

Poster (2007, October 11)

Detailed reference viewed: 13 (2 ULg)
See detailAnalysis of the dynamic localization of atRSZp22 splicing factor by Flip-shuttling assay
Rausin, Glwadys ULg; Tillemans, Vinciane ULg; Wernimont, Pierre et al

Poster (2007, October 11)

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See detailBm-573, an original thromboxane receptor antagonist, reduces development of atherosclerosis in apoe–deficient (apo e-/-) mice
Cherdon, Céline ULg; Rolin, Stéphanie; Hanson, Julien ULg et al

Poster (2007, October 11)

To test the efficacy of BM-573 in atherogenesis, the effect of 10 weeks of treatment with BM573 (10 mg/l) on early aortic atherosclerotic lesions of apo E deficient mice was assessed. These mice were fed ... [more ▼]

To test the efficacy of BM-573 in atherogenesis, the effect of 10 weeks of treatment with BM573 (10 mg/l) on early aortic atherosclerotic lesions of apo E deficient mice was assessed. These mice were fed with chow diet, with spontaneous increase of total plasma cholesterol and triglycerides. In this experiment, while BM-573 did not affect body weight, it significantly decreases early atherogenesis lesions confirmed by macroscopic, microscopic and biochemical analysis. These results confirm that selective antagonism of TP receptor is effective in reducing atherosclerotic lesion in apo E deficient mice. Consequently, BM-573 could be a potential drug for prevention of atherosclerosis [less ▲]

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See detailOptoacoustic specific detection of prostate cancer using functionalized gold nanorods
Fleron, Maximilien ULg; Schol, Daureen ULg; Greisch, Jean-François et al

Poster (2007, October 10)

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See detailLa maladie de l'aulne: Situation en Région Wallonne et recommandations de Gestion
Debruxelles, Natacha; Claessens, Hugues ULg; Dufays, Edwin ULg et al

Poster (2007, October 10)

C’est en 1999, que la maladie de l’aulne a été identifiée pour la première fois en Belgique. Cette maladie causée par Phytophthora alni touche autant l’aulne glutineux, espèce indigène la plus fréquente ... [more ▼]

C’est en 1999, que la maladie de l’aulne a été identifiée pour la première fois en Belgique. Cette maladie causée par Phytophthora alni touche autant l’aulne glutineux, espèce indigène la plus fréquente le long de nos cours d’eau, que l’aulne blanc. Les aulnes atteints présentent différents types de symptômes. En 2002, un inventaire par échantillonnage a été réalisé sur tous les cours d’eau classés et navigables en Région wallonne afin de cibler les zones concernées par la maladie et apprécier l’importance du phénomène. [less ▲]

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See detailAdaptation de l'entretien des ripisylves au patrimoine naturel
Mouchet, Frédéric; Laudelout, Arnaud; Claessens, Hugues ULg et al

Poster (2007, October 10)

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See detailLa sectorisation des cours d'eau wallons de première catégorie
Mouchet, Frédéric; Claessens, Hugues ULg; Henrotay, Frédéric ULg et al

Poster (2007, October 10)

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See detailLe monitoring des bandes riveraines : Vitrine des cours d'eau wallons
Debruxelles, Natacha; Claessens, Hugues ULg; Dufays, Edwin ULg et al

Poster (2007, October 10)

La gestion des cours d’eau est un exercice difficile qui nécessite souvent de conjuguer différents objectifs et contraintes. Pour assurer une gestion de qualité soucieuse du respect de la ... [more ▼]

La gestion des cours d’eau est un exercice difficile qui nécessite souvent de conjuguer différents objectifs et contraintes. Pour assurer une gestion de qualité soucieuse du respect de la multifonctionnalité de ces milieux, il apparaît primordial de disposer d’un état des lieux des ressources à un moment donné et surtout de leur évolution au cours du temps de celles-ci. Le monitoring des bandes riveraines doit donc être considéré comme un outil d’aide à la gestion, à la disposition tant des gestionnaires que des décideurs politiques. [less ▲]

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See detailSchizophrenia and the attribution of interpersonal intentions from emotional facial expression
Blairy, Sylvie ULg; Nachtergael, Hilde; Neumann, Aurore

Poster (2007, October 04)

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See detailDo tonsilar FDCs express PrPc in sheep?
Toppets, Vinciane ULg; Piret,J; Minne,M et al

Poster (2007, October)

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See detailEvaluation de la résistance des aménagements par techniques végétales face aux événements hydrologiques
Peeters, Alexandre ULg; Hallot, Eric ULg; Houbrechts, Geoffrey ULg et al

Poster (2007, October)

Lors du suivi géomorphologique d’aménagement ou de restauration de cours d’eau par techniques végétales réalisé en Région Wallonne, nous nous sommes entre autres intéressés à la résistance que ces ... [more ▼]

Lors du suivi géomorphologique d’aménagement ou de restauration de cours d’eau par techniques végétales réalisé en Région Wallonne, nous nous sommes entre autres intéressés à la résistance que ces techniques offraient face aux différents évènements hydrologiques. Nous avons étudié plusieurs types de techniques (telles que plantations, caissons, épis, peignes et fascines, végétalisation de gabions, techniques combinées...) réalisés sur des rivières de différentes tailles, situées dans des contextes géomorphologiques régionaux variés (impliquant une dynamique différente). La résistance de ces techniques a été évaluée en utilisant la puissance spécifique calculée lors des différentes crues subies par l’aménagement. Cette dernière représente la capacité de travail qu'une rivière peut effectuer et elle permet, ente autres, d'appréhender l'activité des rivières en ce qui concerne les formes et la dynamique des méandres (Ferguson, 1981 ; Bravard, 1991) mais également la possibilité de réaction et d'adaptation des rivières en réponse à des travaux d'aménagement (Brookes, 1998). Les puissances spécifiques ont été calculées non seulement pour le débit à plein bord mais aussi pour la première crue importante survenue après la mise en place du chantier. Par ailleurs, les récurrences des crues ont également été déterminées. Ces premiers résultats nous permettent de proposer une synthèse s’intégrant dans un guide technique (Technique végétales : conception, application et recommandations, GIREA - LHGF) destinés aux différents gestionnaires. BRAVARD J.P., 1991. La dynamique fluviale à l’épreuve des changements environnementaux : Quels enseignements applicables à l’aménagement des rivières ? La Houille Blanche, 7-8, 515-521. BROOKES A., 1988. Channelized rivers, perspectives for environmental management. Wiley, New York, 326 p. FERGUSON R.I., 1981. Channel form and channel changes ; In British Rivers, Lewin J. (Ed), Allen, London,, 91- 125. [less ▲]

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See detailThe influence of affective valence on false recognition in the Deese/Roediger & McDermott procedure.
Dehon, Hedwige ULg; Laroi, Frank ULg; van der linden, Martial

Poster (2007, October)

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See detailEtude du transport de la charge de fond des rivières grâce aux résidus de la sidérurgie ancienne
Houbrechts, Geoffrey ULg; Mols, Julien; Levecq, Yannick et al

Poster (2007, October)

En dynamique fluviale, différentes techniques de marquage sont couramment utilisées dans le but de cerner les critères de mise en mouvement de la charge de fond, de déterminer la compétence des cours ... [more ▼]

En dynamique fluviale, différentes techniques de marquage sont couramment utilisées dans le but de cerner les critères de mise en mouvement de la charge de fond, de déterminer la compétence des cours d’eau et d’estimer les distances de charriage. Toutefois, ces résultats sont basés sur des mobilisations d’éléments isolés et sur des pas de temps relativement courts. Il est donc difficile d’extrapoler ces données au déplacement de l’ensemble de la charge de fond vu l’existence de sites de piégeage, au sein même du lit mineur, qui peuvent immobiliser les éléments pendant de très longues périodes. Une méthode originale a toutefois été développée au laboratoire d’Hydrographie et de Géomorphologie fluviatile (ULg), pour étudier le transport de la charge de fond sur un pas de temps nettement plus long. Cette méthode consiste à utiliser les scories, rejetées en grande quantité par les anciens fondeurs dans les rivières, comme traceur de la progression de la charge de fond. Pendant plusieurs siècles, les scories se sont intimement mélangées avec les éléments naturels de la charge de fond et ont progressé conjointement. La taille des scories présentes sur les seuils permet donc d’estimer la compétence effective des rivières. Par ailleurs, les périodes de fonctionnement des sites sidérurgiques sont généralement connues. Sur la base des distances parcourues par les scories, il est donc possible d’évaluer la vitesse de progression des éléments de la charge de fond. [less ▲]

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See detailTechniques de marquage de la charge de fond des rivières
Hallot, Eric ULg; Houbrechts, Geoffrey ULg; Mols, Julien et al

Poster (2007, October)

Durant près d’une décennie, nous avons analysé le transport de la charge de fond dans une gamme de rivières de taille différente et situées dans des contextes géomorphologiques variés, au sein du massif ... [more ▼]

Durant près d’une décennie, nous avons analysé le transport de la charge de fond dans une gamme de rivières de taille différente et situées dans des contextes géomorphologiques variés, au sein du massif ardennais. Pour ce faire, des techniques de marquages traditionnels ont été mises en oeuvre (marquage de placette à la peinture, injection de galets peints) et des méthodes innovantes ont également été testées et développées (galets équipés d’émetteur radio, de pit-tag ou d’une charge métallique). Chacune de ces méthodes permet de déterminer certains aspects du transport de la charge de fond (paramètres de mobilisation, distance de charriage, compétence, échanges verticaux dans la couche active, tri hydraulique). Le type de marquage utilisé doit également être adapté aux caractéristiques intrinsèques de la rivière (pente, largeur, débit, espacement seuil mouille), de la charge de fond (granularité des sédiments, épaisseur de la couche active), de la disponibilité en matériaux et de l’héritage géomorphologique. Une étude systématique des taux de récupération des galets, des temps de mise en oeuvre, de la représentativité des résultats nous permet de présenter une première synthèse méthodologique détaillant les avantages et les inconvénients des différentes techniques en fonction du résultat escompté et du type de rivière. [less ▲]

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See detailThe influence of affective valence on false recall in the Deese/Roediger & McDermott procedure.
Dehon, Hedwige ULg; Laroi, Frank ULg; Van der Linden, Martial

Poster (2007, October)

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See detailPrevention and management of violence in Belgian psychiatric institutions: do current practices respect international guidelines?
Lardenois, Miguel; Duquesne, Patricia; Gillain, Nicolas ULg et al

Poster (2007, October)

Detailed reference viewed: 29 (9 ULg)
See detailEntanglement of localized states
Martin, John ULg; Giraud, Olivier; Georgeot, Bertrand

Poster (2007, October)

Detailed reference viewed: 4 (0 ULg)
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See detailModel Extension Facilitates Parameter Estimation for Kinetic Reaction Networks
Fey, Dirk; Bullinger, Eric ULg

Poster (2007, September)

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See detailMeasurement of the magnetic flux threading holes of drilled superconductors
Lousberg, Grégory ULg

Poster (2007, September)

Article associé : Measurement of the magnetic field inside the holes of a drilled bulk high-Tc superconductor

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See detailEffect of ruminal degradable ,itrogen defocit on nitrogen metabolismingrowing double muscled Belgian Blue bulls fed beet pulp silage based diet
Valkeners, Damien; Beckers, Yves ULg; Lindebrings, Aurore et al

Poster (2007, September)

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See detailHole lattice influence on the magnetization of drilled superconductors
Lousberg, Grégory ULg

Poster (2007, September)

Article associé : Bulk high-Tc superconductors with drilled holes: how to arrange the holes to maximize the trapped magnetic flux?

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See detailAn atypical cell during development of the auditory organ : the inner pillar cell
Thelen, Nicolas ULg; Malgrange, Brigitte ULg; Thiry, Marc ULg

Poster (2007, September)

Although the structure of the auditory organ in mature mammals, the organ of Corti, is clearly established, its development is far to be elucidated. Using cytochemical and immunohistochemical methods at ... [more ▼]

Although the structure of the auditory organ in mature mammals, the organ of Corti, is clearly established, its development is far to be elucidated. Using cytochemical and immunohistochemical methods at the light and electron microscope levels, we examined its spatiotemporal development in rats from embryonic day 16 (E16) to E19. <br />At E16, whatever the region of the cochlear studied (base, middle, apex), the organ of Corti is not present. We demonstrate that the organ of Corti develops from a non-proliferative cell zone that is located in the junctional region between the greater epithelial ridge and the lesser epithelial ridge of the cochlear duct and that is characterized by the presence of numerous microvilli. Using the periodic acid-thiocarbohydrazide-silver proteinate method, we reveal that the first cells to develop in this zone are the inner pillar cells, a particular type of nonsensory supporting cells; they arise in the base of the cochlear duct at the boundary between the two ridges at E16. The cell differentiation in this prosensory region continues according to a base-to-apex gradient, the inner hair cells appear in the greater epithelial ridge at E17 and the outer hair cells in the lesser epithelial ridge at E18. At E19, all the different cell types of the organ of Corti are well in place. We also show that the development of the inner pillar cells within the prosensory region does not involve Notch1 signaling. These results highlight the central role that cells could play the inner pillar in the organ of Corti development. [less ▲]

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See detailModel Extension Facilitates Parameter Estimation for Kinetic Reaction Networks
Fey, Dirk; Bullinger, Eric ULg

Poster (2007, September)

Detailed reference viewed: 2 (0 ULg)
See detail. Study of neuronal cells preconditioning by ESR.
Guelluy, Pierre-Henri ULg; Deby-Dupont; Hoebeke, Maryse ULg

Poster (2007, September)

Detailed reference viewed: 9 (3 ULg)
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See detailDetection of micro-RNA/gene interactions involved in angiogenesis using machine learning techniques
Huynh-Thu, Vân Anh ULg; Hiard, Samuel ULg; Geurts, Pierre ULg et al

Poster (2007, September)

Motivation: Angiogenesis is the process responsible for the growth of new blood vessels from existing ones. It is also associated with the development of cancer, as tumors need to be irrigated by blood ... [more ▼]

Motivation: Angiogenesis is the process responsible for the growth of new blood vessels from existing ones. It is also associated with the development of cancer, as tumors need to be irrigated by blood vessels for growing. New cancer therapies appear that exploit angiogenesis inhibitors, also called angiostatic agents, to asphyxiate and starve the tumors. Better understanding the regulatory mechanisms that control angiogenesis is thus fundamental. Recently, short non-coding RNA molecules, called micro-RNAs, have been discovered that are involved in post- transcriptional regulation of gene expressions. These molecules bind to RNA messengers following the base pairing rules, preventing them from being translated into proteins and/or tagging them for degradation. The main goal of this work is to use computational approaches to identify micro-RNAs involved in angiogenesis. Method: In order to identify genes involved in angiogenesis, bovine endothelial cells were treated by a known angiogenesis inhibitor [1], prolactin 16K, and their gene expression profile was compared to the profile of untreated cells. The genes were then divided into three classes: up-regulated, down-regulated, and unaffected genes. The 3'UTR regions of these genes were then analysed by machine learning techniques. Different approaches were considered. First, we described each gene by a vector of motif counts in their 3'UTR regions and used machine learning techniques to rank the motifs according to their relevance for separating the genes into the different classes. We considered successively motifs corresponding to the seeds of known micro- RNAs and also all possible motifs of a given length. To rank the motifs, we compared ensemble of decision trees and linear support vector machines. Second, we considered an approach called Segment and Combine that was proposed in [2]. Finally, we also carried out an exhaustive search of all motifs of a given length that satisfy some constraints on specificity and coverage with respect to a given gene category. Results: The ability of the different approaches at identifying relevant motifs was first assessed on genes predicted to be the target of some known miRNAs. In this simple setting, most methods were able to identify the micro-RNA seed. The results obtained on the genes regulated by prolactin 16K are also very encouraging. We were able to identify one micro-RNA already known to play a role in angiogenesis and several motifs are predicted by different approaches as very specific of up- or down-regulation by prolactin 16K. Their relationship with known micro-RNAs is certainly worth exploring. Conclusion: Machine learning approaches are promising techniques for the identification of micro-RNA/gene interactions. Future work will concern the application of the same kind of techniques on promoters for the identification of transcription factor binding sites. [less ▲]

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See detailLiaison VZV IgG and VZV IgM assays: a comparative study
Huynen, Pascale ULg; Melin, Pierrette ULg; De Mol, Patrick ULg

Poster (2007, September)

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See detailThe Ursidae phylogeny based on the combined analysis of nuclear genes
Pagès, Marie ULg; Calvignac, Sébastien; Klein, Catherine et al

Poster (2007, September)

To definitively solve the last the ambiguities concerning the evolutionary history of Ursidae, we sequenced ten nuclear genes for all the eight extant bear species. By combining these new sequences with ... [more ▼]

To definitively solve the last the ambiguities concerning the evolutionary history of Ursidae, we sequenced ten nuclear genes for all the eight extant bear species. By combining these new sequences with those of four other recently published nuclear markers, we provide new insights into the phylogenetic relationships of the Ursidae family members. The hypothesis that the giant panda was the first species to diverge among ursids is definitively confirmed and the branching order within the Ursus genus is clarified for the first time. Moreover, these analyses indicate that the American and the Asiatic black bears do not cluster as sister taxa, as had been previously hypothesised. Sun and sloth bears undoubtedly appear as the most basal ursine species but uncertainties about their exact relationships remain. [less ▲]

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See detailWall stent placement to prevent coils migration during intrahepatic embolisation of porto-systemic shunt in a dog
Bolen, Géraldine ULg; De Busscher, Virginie; Cavrenne, Romain et al

Poster (2007, September)

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See detailUse of supercritical carbon dioxide for polym/clay nanocomposites preparation and foaming
Urbanczyk, Laetitia ULg; Stassin, Fabrice; Calberg, Cédric ULg et al

Poster (2007, August 31)

Detailed reference viewed: 11 (1 ULg)
See detailSynthesis of high-relaxivity contrast agents for magnetic resonance imaging by "click" chemistry
Vanasschen, Christian; Thonon, David ULg; Lecomte, Philippe ULg et al

Poster (2007, August 31)

Detailed reference viewed: 51 (7 ULg)
See detailCobalt(II) complexes as controlling agents for the radical polymerization of vinyl monomers
Debuigne, Antoine ULg; Sciannaméa, Valérie; Piette, Yasmine ULg et al

Poster (2007, August 31)

Detailed reference viewed: 14 (3 ULg)
See detailElectrospinning and nanofibers
Sorlier, Pierre; Grignard, Bruno ULg; Mitu, Alina et al

Poster (2007, August 31)

Detailed reference viewed: 24 (1 ULg)
See detailNovel amphiphilic degradable copolymers for drug deivery systems
Van Butsele, Kathy; Freichels, Hélène ULg; Rieger, Jutta et al

Poster (2007, August 31)

Detailed reference viewed: 15 (1 ULg)
See detailImplantable hydrogels
Zalfen, Alina; Bozukova, Dimitriya; Jérôme, Robert ULg et al

Poster (2007, August 31)

Detailed reference viewed: 25 (3 ULg)
See detailTrithiocarbonate (macro) RAFt agents for the preparation of polymeric nanomaterials in homogeneous and heterogeneous media
Rieger, Jutta; Alaimo, David ULg; Carron, Amélie et al

Poster (2007, August 31)

Detailed reference viewed: 33 (3 ULg)
See detailPolymer/carbon nanotubes nanocomposites
Thomassin, Jean-Michel ULg; Caldarella, Giuseppe ULg; Germain, Albert ULg et al

Poster (2007, August 31)

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See detailMacromolecular engineering of aliphatic polyesters based on macrocyclic units
Lecomte, Philippe ULg; Li, Haiying; Riva, Raphaël ULg et al

Poster (2007, August 31)

The last decades have witnessed a steadily increasing progress in the macromolecular engineering of the main families of synthetic polymers. Ring-shaped copolymers show a unique topology due to the ... [more ▼]

The last decades have witnessed a steadily increasing progress in the macromolecular engineering of the main families of synthetic polymers. Ring-shaped copolymers show a unique topology due to the absence of any chain-end and exhibit distinct properties from their linear counterparts, such as glass transition temperature, order-disorder transition, reduced viscosity, lower hydrodynamic volumes. This communication aims at reporting on a novel route to biodegradable cyclic polyesters. Our strategy is based on the work of Prof. Kricheldorf who initiated the ring-opening polymerization of ε-caprolactone by cyclic tin dialkoxides, e.g., 2,2-dibutyl-2-stanna-1,3-dioxepane (DSDOP) in order to obtain “living” macrocyclic PCL, still containing two endocyclic tin-oxygen bonds. In this work, the resumption of polymerization by a few units of ε-caprolactone substituted by an acrylic unit, e.g., 1-(2-oxooxepan-3-yl)ethyl prop-2-enoate, followed by intramolecular photo-cross-linking of pendant unsaturations and finally by hydrolysis gave rise to macrocyclic PCL. As a rule, this strategy is very well-suited for the synthesis of high molecular weight PCL. Moreover, tin alkoxides were kept untouched after the cross-linking step and remained thus available for further macromolecular engineering. The process was extended to the synthesis of other architectures such as sun-shaped, two-tail tadpole-shaped, eight-shaped and symmetrical four-tail eight-shaped copolyesters. [less ▲]

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See detailBiosensors based on electrochemically prepared polyanilines and bifunctional hybrid proteins
Faure, Emilie ULg; Halusiak, Emilie; Ruth, Nadia ULg et al

Poster (2007, August 31)

Detailed reference viewed: 30 (11 ULg)
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See detailContribution of "click" chemistry to the functionalization of aliphatic polyesters
Schmeits, Stephanie ULg; Riva, Raphaël ULg; Zednik, Jiri et al

Poster (2007, August 31)

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See detailSynthesis of PCL/clay masterbatches and their redispersion in poly(styrene-co-acrylonitrile)
Urbanczyk, Laetitia ULg; Stassin, Fabrice; Calberg, Cédric ULg et al

Poster (2007, August 27)

Detailed reference viewed: 9 (2 ULg)