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See detailInfluence of Brain-Derived Neurotrophic Factor val66met human polymorphism on declarative memory consolidation during sleep
Mascetti, Laura ULg; Foret, Ariane ULg; Matarazzo, Luca et al

Poster (2010, September 15)

Objectives The Brain-Derived Neurotrophic Factor (BDNF) is a neurotrophin which in the adult brain, regulates long-term potentiation and has been involved in the build up of the homeostatic sleep pressure ... [more ▼]

Objectives The Brain-Derived Neurotrophic Factor (BDNF) is a neurotrophin which in the adult brain, regulates long-term potentiation and has been involved in the build up of the homeostatic sleep pressure in rodents. In humans, valine (val) to methionine (met) substitution in the 5’ pro-region of the BDNF protein is associated with poorer episodic memory. Neurons transfected with met-BDNF-Green Fluorescence Protein showed lower depolarization-induced secretion, while constitutive secretion is unchanged. Here, we hypothesized that the differences in BDNF release determined by this polymorphism would influence sleep-dependent memory consolidation and that in comparison with the met-carriers (val/met or met/met), val/val individuals would show higher memory performance after one night of sleep rather than an immediate retrieval session. Methods Participants encoded a series of neutral faces in the afternoon. Retrieval sessions took place one hour after the encoding session, and in the following morning, after a night of polysomnographic-monitored sleep. During retrieval, studied faces and new ones were presented in random order. For each stimulus, the subjects indicated whether they could retrieve the encoding episode with (“Remember” response), or without details (“know” response), or if they thought the item had not been presented during encoding (“New” response). Results A repeated-measure ANOVA on discrimination index (d’) showed significant effects of group (F(1, 22)=4.66, p=0.042) and session (F(1, 22)=12.21, df=1, p=0.002). Although the group by session interaction was not significant (F(1, 22)=1.84, p=0.188), exploratory planned comparisons showed that at immediate retrieval, d’ was not significantly different between groups (val/val, d’ = 1.94±0.16; met-carriers, d’= 1.61±0.14; p>0.5). In contrast, during the second retest (the next day) d’ in the val/val group (d’=2.56±0.23) was significantly higher than in the met-carriers group (d’=1.88±0.21; p=0.041). Likewise, a between-session enhancement in d’ was detected only in the val/val population (p=0.003). Conclusion Val/val individuals demonstrate higher memory performance than met-carriers after a night of sleep but not at immediate retest. These data suggest that activity-dependent BDNF release promotes memory consolidation during the first post-training hours. Further analysis of the present data set will assess the respective effect of sleep and time on the BDNF-associated delayed memory enhancement. This study was supported by FNRS-FRIA, the University of Liège, and the QEMF. [less ▲]

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See detailTailor-made copolymers for responsive drug delivery nanosystems
Cajot, Sébastien ULg; Jérôme, Christine ULg

Poster (2010, September 15)

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See detailNon Stationary Multiresolution Analysis
Simons, Laurent ULg

Poster (2010, September 13)

An orthonormal basis of wavelets of $L^2(\R)$ is an orthonormal basis of $L^2(\R)$ of type \[ \psi_{j,k}=2^{j/2}\psi(2^j\cdot-k),\quad j,k\in\Z. \] A classical method to obtain such bases consists in ... [more ▼]

An orthonormal basis of wavelets of $L^2(\R)$ is an orthonormal basis of $L^2(\R)$ of type \[ \psi_{j,k}=2^{j/2}\psi(2^j\cdot-k),\quad j,k\in\Z. \] A classical method to obtain such bases consists in constructing a multiresolution analysis. When the mother wavelet $\psi$ depends on the scale (i.e. the index $j$), a non stationary version of multiresolution analysis is then used. It is for example the case in the general context of Sobolev spaces. We generalize different characterizations in the standard theory of wavelets to the case of multi-scales wavelets and non stationary multiresolution analyses. [less ▲]

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See detailSome results about prevalence and strongly monoHölder functions
Kreit, Damien ULg

Poster (2010, September 13)

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See detailRecognisable languages over an algebra
Cavus, Rukiye ULg

Poster (2010, September 13)

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See detailAffine bundles are affine spaces
Leuther, Thomas ULg

Poster (2010, September 13)

We show that the category of affine bundles over a smooth manifold M is equivalent to that of affine spaces modeled on locally free modules over the algebra of smooth functions on M.

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See detailImpaired verbal short-term memory for serial order information in dyslexic adults
Martinez Perez, Trecy ULg; Majerus, Steve ULg; Poncelet, Martine ULg

Poster (2010, September 10)

This study used the distinction of item and order information in verbal short-term memory (STM) to further our understanding of verbal STM impairments in dyslexia. Item STM has been shown to depend on the ... [more ▼]

This study used the distinction of item and order information in verbal short-term memory (STM) to further our understanding of verbal STM impairments in dyslexia. Item STM has been shown to depend on the quality of underlying phonological representations and hence should be impaired in dyslexic participants given their poor phonological processing abilities. On the other hand, order STM represents a specific STM capacity predicting learning capacity for new phonological and orthographic sequences (Majerus et al., 2006; Nithart et al, 2010). If STM impairments contribute to dyslexia, then especially order STM should be impaired, in addition to item STM. [less ▲]

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See detailCategorization and abstraction of construction schemas in children with specific language impairment
Leroy, Sandrine ULg; Duquet, Adèle ULg; Parisse, Christophe et al

Poster (2010, September 10)

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See detailStylistic Issues in New Nigerian Literature
Tunca, Daria ULg

Poster (2010, September 09)

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See detailLinking abstract form and grammatical function : a construction-grammar experiment
Parisse, Christophe; Maillart, Christelle ULg

Poster (2010, September 09)

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See detailSpoken sentence comprehension in children with developmental dyslexia
Leclercq, Anne-Lise ULg; Majerus, Steve ULg; Guasti, Maria Teresa et al

Poster (2010, September 09)

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See detailChitosan-based wound dressings produced by electrospinning
Croisier, Florence ULg; Sorlier, Pierre; Jérôme, Christine ULg

Poster (2010, September 07)

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See detailREAL-TIME MONITORING OF ENVIRONMENTAL FACTORS TO MODEL WHEAT YIELD PRODUCTION
Dumont, Benjamin ULg; Leemans, Vincent ULg; Lebeau, Frédéric ULg et al

Poster (2010, September 07)

This paper presents the results of a one year preliminary study in which a real-time monitoring system was used to feed the STICS soil crop model. The monitoring system was made of a self-organising ... [more ▼]

This paper presents the results of a one year preliminary study in which a real-time monitoring system was used to feed the STICS soil crop model. The monitoring system was made of a self-organising wireless network within which microsensors collected and stored microclimatic and environmental data. As indicated by the statistical criteria (RMSE, normalized deviation and model efficiency), the optimisation of some wheat crop parameters allows the STICS model to predict the yields with good accuracy for three different soil types and seven different nitrogen application rates. [less ▲]

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See detailConversion of waste glycerol into valuable biopolyesters
Cavalheiro, J.M; de Almeida, Catarina; Cesario, Teresa et al

Poster (2010, September 06)

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See detailBioremediation of hydrocarbon polluted soil - Improvement of in situ bioremediation by bioaugmentation with endogenous and exogenous strains
Tarayre, Cédric ULg

Poster (2010, September 03)

Petroleum pollution has now become a real problem because hydrocarbons are persistent contaminants in soils and water. Contamination problems increase when ages of relevant facilities, such as oil storage ... [more ▼]

Petroleum pollution has now become a real problem because hydrocarbons are persistent contaminants in soils and water. Contamination problems increase when ages of relevant facilities, such as oil storage tanks and pipelines, increase over time. The evolution of Legislation concerning soil pollution has led to the need of efficient techniques able to restore the polluted ground. Unfortunately, these techniques are expensive. Bioremediation of hydrocarbon polluted soils has been recognized as an efficient, economic and environmentally sound treatment. Particularly biostimulation and bioaugmentation are being studied in labs. A lot of studies tried to determine which method is the most efficient, but the conclusions diverge. Moreover, conditions are different in labs and contaminated sites. [less ▲]

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See detailPotentiel secondary metabolite biosynthesis operons in environmental colonies of Woronichinia
Lara, Yannick ULg; Lambion, Alexandre ULg; Codd, Goeffrey A. et al

Poster (2010, September 01)

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See detail4DCT EVALUATION OF THE RESPIRATORY-RELATED MOVEMENT OF THE BREAST USING SURGICAL CLIPS AS FIDUCIALS
JANVARY, Zsolt Levente ULg; Broens, Audrey; MARTINIVE, Philippe ULg et al

Poster (2010, September)

To explore the respiratory-related displacement of the tumour bed in patients undergoing breast conserving <br />surgery followed by external-beam radiotherapy, by using respiratory correlated imaging and ... [more ▼]

To explore the respiratory-related displacement of the tumour bed in patients undergoing breast conserving <br />surgery followed by external-beam radiotherapy, by using respiratory correlated imaging and surgical clips as fiducials. [less ▲]

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See detailSynovium angiogenesis in osteoarthritis: a new therapy target for chondroitin sulfate
Mathy, Marianne ULg; Lambert, Cécile ULg; Dubuc, Jean Emile et al

Poster (2010, September)

Osteoarthritis (OA) is an important cause of pain and disability in the ageing population. Angiogenesis and inflammation are closely integrated process in OA and may contribute to its pathogenesis, as ... [more ▼]

Osteoarthritis (OA) is an important cause of pain and disability in the ageing population. Angiogenesis and inflammation are closely integrated process in OA and may contribute to its pathogenesis, as well as, affect disease progression and pain. Chondroitin sulfate (CS) is a symptomatic slow acting drug for OA and there is strong evidence suggesting that CS may also be a structure disease modifying osteoarthritis drug. The mechanisms underlying these effects remain poorly understood. This work aimed to demonstrate the relation between inflammation and angiogenesis of synovium and to study the effect of CS on synovium angiogenesis. [less ▲]

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See detailEmotion, faux souvenirs DRM et vieillissement normal
Dehon, Hedwige ULg; Laroi, Frank ULg; Van der Linden, Martial ULg

Poster (2010, September)

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See detailDoes placebo based validation standards mimic well real batch products behaviour? A case study
Bouabidi, Abderrahim ULg; Talbi, M.; Bouklouze, A. et al

Poster (2010, September)

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See detailKynurenic acid decreases sensitivity to cortical spreading depression in rat
Chauvel, Virginie ULg; Vamos, Eniko; Pardutz, Arpat et al

Poster (2010, September)

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See detailMesure de la sensibilité circadienne à la lumière avec la pupillométrie : données préliminaires
Daneault, V; Hébert, M; Vandewalle, Gilles ULg et al

Poster (2010, September)

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See detailEVALUATION OF THE AUTOMATIC IMAGE REGISTRATION FEATURES OF A KV CONE-BEAM CT IMAGING SYSTEM
JANVARY, Zsolt Levente ULg; JANSEN, Nicolas ULg; MATHOT, Michel ULg et al

Poster (2010, September)

As a part of the clinical implementation of a kV cone-beam CT (CBCT) volumetric imaging system for new Elekta Synergy linear accelerators, the automatic image registration (IR) system of the XVI Software ... [more ▼]

As a part of the clinical implementation of a kV cone-beam CT (CBCT) volumetric imaging system for new Elekta Synergy linear accelerators, the automatic image registration (IR) system of the XVI Software was studied. We examined the effect of the variability of matching parameters of the software on the results of the patient position errors. [less ▲]

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See detailFlora and plant communities of the city of Bujumbura (Burundi): diversity, origin and conservation value.
Bigirimana, J; Bogaert, Jan ULg; De Cannière, C et al

Poster (2010, September)

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See detailImplication of plasmacytoid dendritic cells in the malignant transformation of cervical epithelial metaplasia
Demoulin, Stéphanie ULg; Herfs, Michael ULg; Somja, Joan ULg et al

Poster (2010, September)

The cervical transformation zone is a dynamic area of a few millimeters in which a glandular epithelium has been replaced by a squamous epithelium through a metaplastic process. Interestingly, a ... [more ▼]

The cervical transformation zone is a dynamic area of a few millimeters in which a glandular epithelium has been replaced by a squamous epithelium through a metaplastic process. Interestingly, a substantial majority (87%) of cervical (pre)cancerous lesions develops within this peculiar microenvironment. Our previous studies reported that intrinsic immune features altered in the metaplastic epithelium could contribute to cancer development by preventing efficient antitumor/antiviral immune response. Plasmacytoid dendritic cells (pDC) are key effectors in host innate immunity and orchestrate adaptive immune responses. Recently, infiltration by these subtypes of dendritic cells has been shown in different cancers. However their implication in antitumor response is largely debated. The present study was performed to determine the implication of pDC in the cervical “metaplasia-dysplasia-cancer” sequence. We demonstrated that the density of pDC increases in the epithelium of metaplastic and (pre)cancerous cervical tissues as well as in underlying stroma as compared with normal exocervical epithelium. This could be partially explained by the increased expression of chemerin, their chemotactic peptide, observed in those areas. We developed a method to efficiently generate pDC cells exhibiting morphological and immunohistochemical features of blood pDC from a limited number of CD34+ cord blood progenitors. Using these in vitro generated pDC, we demonstrated that medium conditioned by transformed keratinocytes modified the activation status of pDC, by inducing a decreased expression of costimulatory molecules such as CD86 and HLA-DR. Moreover, malignant keratinocytes diminished the ability of pDC to produce IFNα in response to an oligonucleotide containing CpG motifs, a defined microbial stimulus for pDC. These results suggest that pDC could be educated within the metaplastic and/or (pre)cancerous microenvironment to acquire a tolerogenic phenotype that could promote carcinogenesis. In agreement with those results, we observed that both metaplastic areas and (pre)cancerous lesions of the cervix are infiltrated by T regulatory cells. [less ▲]

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See detailA DESIGN SPACE APPROACH TO DEVELOP A GENERIC CE METHOD FOR THE SEPARATION OF 19 ANTIMALARIAL DRUGS
Lamalle, Caroline ULg; Marini Djang'Eing'A, Roland ULg; Debrus, Benjamin ULg et al

Poster (2010, September)

This project consists in analysing different molecules used against malaria by capillary electrophoresis (CE).

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See detailInvolvement of Placental growth factor in Wallerian degeneration
Chaballe, Linda ULg; Close, Pierre ULg; Sempels, Maxime ULg et al

Poster (2010, September)

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See detailFunctional suppression of the yeast msb3- mutation
Biver, Sophie ULg; Vandenbol, Micheline ULg

Poster (2010, September)

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See detailFemale bonding in bonobos: Testing the "artificial sisterhood" hypothesis in a newly formed group of bonobos (Pan paniscus)
Dieudonné, Mélodie ULg; Stevens, Jeroen; Servais, Véronique

Poster (2010, September)

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See detailTOLERANCE INTERVALS AS CONTROL CHART: COMPARISON TO CLASSIC SHEWHART X̅-R CONTROL CHART
Marini Djang'Eing'A, Roland ULg; Lambert, Véronique; Denooz, Raphael ULg et al

Poster (2010, September)

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See detailSleep in Disorders of Consciousness
Schabus, Manuel; Cologan, Victor ULg; Weihart, K et al

Poster (2010, September)

Résultats préliminaires de l'étude du sommeil chez les patients cérébrolésés en état de conscience altéré.

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See detailApplication of experimental design for the HPLC-UV-MS separation of aporphine alkaloids from leaves of Spirospermum Penduliflorum thouars
Rafamantanana, Mamy H.; Debrus, Benjamin ULg; Raoelison, Guy E. et al

Poster (2010, September)

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See detailComparaison d'une méthode "acide" et enzymatique pour le dosage de l'inuline
Thibaudin, L.; Delanaye, Pierre ULg; Maillard, N. et al

Poster (2010, September)

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See detailNew MALDI-Mass Spectrometry Imaging Procedures to Highlight Potential Proteic And Lipidic Biomarkers in Ovarian Cancer
Mériaux, Céline; Franck, Julien; Longuespée, Rémi ULg et al

Poster (2010, September)

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See detailTransfer of a conventional LC method for the screening of conterfeit antimalarial medicines to UHPLC
Nistor, Iolanda ULg; Lecomte, Frédéric ULg; Mbinze Kindenge, Jérémie et al

Poster (2010, September)

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See detailTHE EFFECT OF BETA MICROPROBE IMPLANTATION ON THE BLOOD BRAIN BARRIER
Warnock, Geoffrey ULg; Dedeurwaardere, Stefanie; Bahri, Mohamed Ali ULg et al

Poster (2010, September)

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See detailPrediction of genetic interactions in yeast using machine learning
Schrynemackers, Marie ULg

Poster (2010, September)

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See detailExploration des relations entre les capacités sémantiques et le manque du mot chez la personne âgée saine
Verhaegen, Clémence ULg; Poncelet, Martine ULg; Kaivers, Vinciane

Poster (2010, September)

Le manque du mot (ou anomie) est une plainte langagière fréquente chez le sujet âgé. Les facteurs cognitifs qui y contribuent et l’âge auquel il apparaît sont cependant controversés (Mortensen et al ... [more ▼]

Le manque du mot (ou anomie) est une plainte langagière fréquente chez le sujet âgé. Les facteurs cognitifs qui y contribuent et l’âge auquel il apparaît sont cependant controversés (Mortensen et al., 2006). Selon Barresi et al. (2000), l’anomie serait liée à une dégradation des représentations sémantiques chez les personnes de plus de 70 ans, les erreurs de dénomination d’images commises par celles-ci étant consistantes contrairement à celles observées chez les personnes de 50-60 ans. Le but de cette étude est de déterminer l’âge d’apparition de l’anomie et d’examiner plus directement les liens entre celle-ci et les capacités sémantiques chez la personne plus âgée. Nous avons évalué les capacités de dénomination d’images d’objets (issues de Bonin et al., 2003) ainsi que de jugement de synonymie et d’association sémantique d’images de trois groupes (N=19-18-19) de personnes saines (score>137 à l’échelle de Mattis), âgés respectivement de 25-35 ans, 50-60 ans et plus de 70 ans. Des ANOVA sur les réponses correctes et les temps de réponse en dénomination d’images révèlent un effet de groupe (respectivement, F(2,53)=21.76, p<.001 et F(2,53)=53.29, p<.001). Les personnes de plus de 70 ans sont plus lentes et commettent plus d’erreurs que les personnes de 50-60 ans et de 25-35 ans qui ne diffèrent pas entre elles. Un effet de groupe apparaît également dans les tâches de jugement de synonymie (F(2,53)=24.71, p<.001) et d’association sémantique (F(2,53)=15.40, p<.01). Les personnes de plus de 70 ans présentent des performances à ces tâches inférieures à celles des deux autres groupes d’âge, égaux entre eux. Cette étude montre que les capacités de dénomination sont altérées chez les personnes de plus de 70 ans mais pas de 50-60 ans et appuie la conception selon laquelle cette altération pourrait être liée à une dégradation des représentations sémantiques chez les personnes plus âgées. [less ▲]

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See detailFaux souvenirs et traitement hémisphérique dans le vieillissement.
Gajewski, Celine; Dehon, Hedwige ULg; Peigneux, Philippe ULg et al

Poster (2010, September)

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See detailNear-Death Experiences : Real or imagined memories?
Thonnard, Marie ULg; Laureys, Steven ULg; Brédart, Serge ULg et al

Poster (2010, September)

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See detailDevelopment of an immobilisation device for treatment of patients after breast conserving surgery for mammary carcinoma.
COUCKE, Philippe ULg; WONNER, Michel ULg; JANVARY, Zsolt Levente ULg et al

Poster (2010, September)

To develop an immobilisation device for prone positioning for breast irradiation. The basic requirements for the device are: rapid and accurate patient (re)positioning, compatibility with modern imaging ... [more ▼]

To develop an immobilisation device for prone positioning for breast irradiation. The basic requirements for the device are: rapid and accurate patient (re)positioning, compatibility with modern imaging devices and easy to handle by the treating technologists. [less ▲]

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See detailCotoneaster horizontalis on calcareous grasslands in Belgium : from ornament to management
Frisson, Gwenn ULg; Piqueray, Julien ULg; Halford, Mathieu ULg et al

Poster (2010, September)

Cotoneaster horizontalis DECAISNE, a Rosaceae coming from Asia, was introduced in Belgium as an ornamental species. Different sides of the invasion were studied, from the distribution of the species and ... [more ▼]

Cotoneaster horizontalis DECAISNE, a Rosaceae coming from Asia, was introduced in Belgium as an ornamental species. Different sides of the invasion were studied, from the distribution of the species and the invasion status, the impacts, to management methods. To describe the invasion status, information was gathered about the occurrence and the distribution of the species in Belgium by compiling various databases. The naturalization status in calcareous grasslands, high-value habitats recognized as biodiversity hotspots, was assessed. Occurrence, population status, preferred habitats, invaded communities, growth rate and fruiting capacity were characterized. Once naturalization established, we investigated its impacts on calcareous grasslands communities, individual species and pollinators. C. horizontalis occurred in seven of the nine studied calcareous grasslands, with densities from 0.34 to 10 individuals/ha. In the most invaded sites, an ongoing colonization process was suggested by a high proportion of small individuals. Moreover, 3-year-old individuals already showed fruiting capacities. Germination rate reached about 30%. Significant impacts on habitat structure and vegetation were showed. Community structure and composition changes were demonstrated in invaded sites by decreasing species richness and diversity. As calcareous grasslands are priority Natura2000 habitats, measures must be taken to control the spread of C. horizontalis. For this purpose, we performed management tests to identify the most efficient techniques that would help the restoration of calcareous grasslands. Both mechanical and chemical management techniques were tested. Methods choice was driven by the environmental constraints of calcareous grasslands, which require highly selective techniques, and by species characteristics. Tested methods were cuttings, stump burning, spraying, cutting plus glyphosate application on stump and glyphosate application on stem basis. Efficiency, cost, feasibility and side-effects on ecosystems were estimated. Management tests are still ongoing but some results have already been drawn: spraying and single cutting are not efficient, the last one generating production of numerous sprouts. Finding the best management method will not be sufficient to stop the invasion. C. horizontalis is still present in 53% of the sale catalogs of horticulturists in Southern Belgium. As long as the species is used in the vicinity of calcareous grasslands, propagules are continuously provided, jeoparding management actions. [less ▲]

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See detailCan we really get rid of Japanese knotweed clones? Two years of management tests in Belgium
Monty, Arnaud ULg; Delbart, Emmanuel ULg; Mahy, Grégory ULg et al

Poster (2010, September)

Japanese knotweed Fallopia japonica is an extremely abundant invasive plant in Belgium and surrounding countries. To date, no eradication method is available for managers facing the invasion of this ... [more ▼]

Japanese knotweed Fallopia japonica is an extremely abundant invasive plant in Belgium and surrounding countries. To date, no eradication method is available for managers facing the invasion of this rhizomatous plant. We tested different chemical herbicides and two application methods (spraying and stem injection), as well as mechanical treatments, on Fallopia clones throughout southern Belgium. The tested methods were selected to be potentially usable by Belgian managers, e.g. using legally accepted rates for herbicides. Stem volume, height and density reduction was assessed after one or two years depending on the treatment. No tested method allowed a complete eradication of the clone. However, stem injection with glyphosate-based herbicide caused the highest damage. The year following injection, no sprouts were observed. Two following year, however, stunted shoots sprouted. Among mechanical control measures, repeated cuts combined with native trees cuttings plantations most appreciably reduced knotweed development. The most efficient methods we tested appear as tools for curbing knotweed invasion but are not likely to be used to eradicate the species. As such they should be included in a more integrated control strategy, together with prevention and public awareness campaigns. [less ▲]

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See detailEcology and evolution of invasive plants: what to study next?
Monty, Arnaud ULg; Brown, Cynthia; Tepolt, Carolyn et al

Poster (2010, September)

In recent decades, a growing number of studies have addressed connections between ecological and evolutionary concepts in biologic invasions. These connections may be crucial for understanding the ... [more ▼]

In recent decades, a growing number of studies have addressed connections between ecological and evolutionary concepts in biologic invasions. These connections may be crucial for understanding the processes underlying invaders’ success. However, the extent to which scientists have worked on the integration of the ecology and evolution of invasive plants is poorly documented, as few attempts have been made to evaluate these efforts in invasion biology research. Such analysis can facilitate recognize well-documented relationships and identify gaps in our knowledge. In this study, we used a network-based method for visualizing the connections between major aspects of ecology and evolution in the primary research literature. Using the family Poaceae as an example, we show that ecological concepts were more studied and better interconnected than were evolutionary concepts. Several possible connections were not documented at all, representing knowledge gaps between ecology and evolution of invaders. Among knowledge gaps, the concepts of plasticity, gene flow, epigenetics and human influence were particularly under-connected. We discuss five possible research avenues to better understand the relationships between ecology and evolution in the success of Poaceae, and of alien plants in general. [less ▲]

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See detailIN VIVO PET IMAGING OF THE EFFECT OF THE NMDA ANTAGONIST MEMANTINE ON GLUCOSE METABOLISM IN THE RODENT BRAIN
Warnock, Geoffrey ULg; Dedeurwaerdere, Stefanie; Bahri, Mohamed Ali ULg et al

Poster (2010, September)

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See detailWhich evolutionary mechanisms allow Senecio inaequidens DC. to face a changing climate? A synthesis
Monty, Arnaud ULg; Mahy, Grégory ULg

Poster (2010, September)

Plant populations are expected to face gradual climatic variation in the next decades. Understanding and quantifying evolutionary and non-evolutionary mechanisms allowing populations response to climate ... [more ▼]

Plant populations are expected to face gradual climatic variation in the next decades. Understanding and quantifying evolutionary and non-evolutionary mechanisms allowing populations response to climate is therefore crucial to anticipate the actual consequences of climate change on plants. However, studying the direct effects of climate change in wild populations is of little anticipating interest… there invasive plants can help! We studied the sources of phenotypic variation in populations that gradually invaded different climatic zones over the last century, and assessed the role of local adaptation, non-adaptive genetic differentiation, phenotypic plasticity and environmental maternal effects in plant population response to climate. [less ▲]

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See detailLa chondroitine sulfate stimule la production des facteurs anti angiogéniques TSP-1 et VEGI par les synoviocytes arthrosiques : un nouveau mécanisme d’action pour cette molécule.
Mathy, Marianne ULg; Lambert, Cécile ULg; Dubuc, Jean Emile et al

Poster (2010, September)

: La chondroïtine sulfate (CS), la glucosamine sulfate (GS), la glucosamine HCl (GH) et l’acide hyaluronique (AH) sont des anti-arthrosiques symptomatiques d’action lente (AASAL) dont l’utilisation est ... [more ▼]

: La chondroïtine sulfate (CS), la glucosamine sulfate (GS), la glucosamine HCl (GH) et l’acide hyaluronique (AH) sont des anti-arthrosiques symptomatiques d’action lente (AASAL) dont l’utilisation est recommandée dans le traitement de l’arthrose. Les mécanismes d’action de ces molécules demeurent mal compris. Notre étude a comme objectif d’étudier les effets de ces molécules sur la production de médiateurs impliqués dans l’angiogenèse de la membrane synoviale (MS) arthrosique. [less ▲]

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See detailThe influence of climate on hillslope sediment supply : Insights from numerical modeling
Bovy, Benoît ULg; Demoulin, Alain ULg; Braun, Jean

Poster (2010, September)

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See detailExperience feed back committee (EFBC) in radiotherapy
DELGAUDINE, Marie ULg; JANSEN, Nicolas ULg; COUCKE, Philippe ULg

Poster (2010, September)

Radiotherapy is a powerful continuously evolving effective treatment tool. Our aim is to offer the best treatments and assure security for patients and personnel. A proactive quality approach copied from ... [more ▼]

Radiotherapy is a powerful continuously evolving effective treatment tool. Our aim is to offer the best treatments and assure security for patients and personnel. A proactive quality approach copied from the one implemented in the air transport industry has been established in our department. An Experience feed back committee (EFBC) has been set up to identify, record and analyze systematically all reported precursor events. Our final objective is to test and strengthen the security of the organization and the quality of care for patients. [less ▲]

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See detailContribution to fight against counterfeit medecines applying several analytical tools
Marini Djang'Eing'A, Roland ULg; Mbinze Kindenge, Jérémie; Montes, M. L. A. et al

Poster (2010, September)

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See detailOptimisation and validation of a fast HPLC method for the quantitation of sulindac and its impurities
Krier, Fabrice ULg; Brion, Michaël; Debrus, Benjamin ULg et al

Poster (2010, September)

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See detailScience with the Carlina hypertelescope
Le Coroller, H.; Dejonghe, J.; Regal, X. et al

Poster (2010, September)

Studies are currently underway to propose a generation of post-VLTI interferometers (Carlina, OHANA, Keops, etc.). Such interferometers will open new fields of research in astrophysics by imaging the ... [more ▼]

Studies are currently underway to propose a generation of post-VLTI interferometers (Carlina, OHANA, Keops, etc.). Such interferometers will open new fields of research in astrophysics by imaging the surfaces of supergiant stars, gravitational microlensing, AGN, Hot Jupiters, etc. To achieve these goals, they will have to respond to several criteria: to provide very high angular resolution (baselines > 100 m), to be equipped with a large number of mirrors (rich UV coverage), and to be able to accommodate high tech instrumentation such as an Adaptive Optics system and a coronagraph. We describe the optical Carlina architecture and show that it fulfills all these criteria. We give new results obtained with the prototype of Carlina currently built at Observatoire de Haute-Provence. Considering its expected specifications, Carlina will operate in complementarity with ELTs and very long baseline interferometers. [less ▲]

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See detailImpact of ageing and food additives on the physico-chemical properties of partially hydrolyzed and pregelatinized rice flour
Mertens, Cécile ULg; Blecker, Christophe ULg

Poster (2010, August 25)

Conservation of the quality of a food product is an essential preoccupation for industrials. Indeed, food acceptability by consummers depends of this quality. However, the latter decreases with time of ... [more ▼]

Conservation of the quality of a food product is an essential preoccupation for industrials. Indeed, food acceptability by consummers depends of this quality. However, the latter decreases with time of storage, due to complex alteration reactions. This study presents a first approach of alteration reactions in a particular range of products: drum-dried pregelatinized cereal products. While this type of product is widely used as thickeners or in infant foods, no study has ever been made on the subject. The cereal studied here is one of the most consumed by mankind: rice. We also investigated the impact of food additives (E170 & E340ii) on the ageing of such a product, because they are often used empirically in industry. [less ▲]

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See detailLiposomes loaded with diglyceride esters of methotrexate and mephalan studies on stability and hemocompatibility
Kuznetsova, N; Kandyba, A.K; Bovin, N et al

Poster (2010, August 24)

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See detailInfluence of steam explosion and thermal degradation of cellulose
Jacquet, Nicolas ULg; Quiévy, Nicolas; Vanderghem, Caroline ULg et al

Poster (2010, August 20)

The aim of the present work is to compare the effect of different steam explosion pretreatments on the thermal degradation of a bleached cellulose where components like hemicelluloses and lignin have ... [more ▼]

The aim of the present work is to compare the effect of different steam explosion pretreatments on the thermal degradation of a bleached cellulose where components like hemicelluloses and lignin have already been removed by acid and alkaline treatments. The results of this study show that thermal degradation of cellulose fibres, studied by TGA, is still limited for a temperature process below 240 °C. However, derivative TGA show that thermal stability of cellulose obtained by these conditions decreases with the increase of temperature. For temperatures above 250°C, char level is higher at the end of the pyrolysis. According to the literature, the increase of the char level is correlated to an increase of the degradation product1. Determination of the degradation products in the liquor obtained after the pretreatment show an important increase of furfural and 5-hydroxymethylfurfural concentration with the temperature in agreement with the increase of the char level. These results confirm the important degradation of the cellulose fibres. [less ▲]

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See detailCan we predict troubles during horse clinical examination by a simple test?
Peeters, Marie ULg; Godfroid, Sandra; Sulon, Joseph et al

Poster (2010, August 03)

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See detailEstimation of Genetic Parameters for Test Day Milk Yields of Moroccan Holstein Cows Using Random Regression Test Day Model
Tijani, Aziz; Rgayai, Brahim; Hammami, Hedi ULg et al

Poster (2010, August 02)

Detailed reference viewed: 44 (8 ULg)
See detailICT Challenges in Belgian Businesses: an overview
Lisein, Olivier ULg

Poster (2010, August)

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See detailInvolvement of odorant cues in the process of superparasitism avoidance
Vandermoten, Sophie ULg; Frere, Isabelle; Hance, Thierry et al

Poster (2010, August)

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See detailWear study on polymers and bio-materials by ultra thin layer activation
Delhalle, René ULg; Marchal, André ULg; Lucas, S. et al

Poster (2010, August)

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See detailImpacts of growth development and age at first calving on first lactation yield in Holstein dairy cows
Picron, Pascale ULg; Froidmont, Eric; Turlot, Amélie et al

Poster (2010, August)

In a context of economic constraints, reducing the herd replacement costs represents a way to improve the economic efficiency of the dairy sector. Studies reported that heifers calving between 23 and 24.5 ... [more ▼]

In a context of economic constraints, reducing the herd replacement costs represents a way to improve the economic efficiency of the dairy sector. Studies reported that heifers calving between 23 and 24.5 mo of age achieved the highest economic return. However, the heifer has to be well developed to guarantee milk performance, calving ease and low stillbirth rate. Monitoring growth, by Heart Girth (HG) measurements, constitute a convenient way to evaluate the feasibility to inseminate heifers early. The aim of this study was to analyse the relationship between HG, age at first calving and milk production at first lactation. HG measurements of 704 Walloon (Belgium) Prim Holstein heifers have been recorded, every 3 months, during 2 years (2006 – 2008). The impact of development, at key-ages (from 3 to 24 mo, every 3 mo), on age at first calving and first lactation yield, was determined using analysis of variance. Mean total milk production in February 2010 (n = 319) rose to 7686 ± 1388 l/365 days of lactation, for a mean age at first calving (n = 421) of 27.4 ± 3.5 mo. These preliminary results suggest a positive correlation between growth performances and first calving age. Heifers with a better conformation (HG > 2.5 % of the French reference) calved significantly earlier than smaller animals. For instance, a lack of conformation at 15 mo implied a delay at first calving of 4.1 mo of age. HG measurement should therefore constitute a preferential tool of management of heifers herd. First lactation yield was significantly higher (950 l/365 d) for heifers calving older (> 30 mo) comparatively to early calving animals (24 mo). These results do not correspond to those related to larger samples in Wallonia. No significant relation could state, at this time, a direct relation between growth development and first lactation yield. Lactation data are still collected to complete this study. [less ▲]

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