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See detail4DCT EVALUATION OF THE RESPIRATORY-RELATED MOVEMENT OF THE BREAST USING SURGICAL CLIPS AS FIDUCIALS
JANVARY, Zsolt Levente ULiege; Broens, Audrey; MARTINIVE, Philippe ULiege 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 detailTHE EFFECT OF BETA MICROPROBE IMPLANTATION ON THE BLOOD BRAIN BARRIER
Warnock, Geoffrey ULiege; Dedeurwaardere, Stefanie; Bahri, Mohamed Ali ULiege et al

Poster (2010, September)

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See detailDigital holographic interferometry by using long infrared radiation (CO2 laser)
Alexeenko, Igor; Vandenrijt, Jean-François ULiege; Georges, Marc ULiege et al

in Advances in Experimental Mechanics VII (2010, September)

We show how digital holographic interferometry in the Long Wave InfraRed (LWIR) spectral range can be used for the investigation of mechanical structures. The 10.6 μm radiation is produced by a CO2 Laser ... [more ▼]

We show how digital holographic interferometry in the Long Wave InfraRed (LWIR) spectral range can be used for the investigation of mechanical structures. The 10.6 μm radiation is produced by a CO2 Laser. Experimental results showing that the method can be used to locate defect in a panel are presented and advantages and disadvantages of this approach are discussed [less ▲]

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See detailComparative toxicities of a wild Plant essential oil and blends of its major constituents on mortality and fecundity of spider mites (Acari: Tetranychidae)
Attia, Sabrina; Grissa, Kaouthar Lebdi; Ghrabi, Zeineb et al

in Lochynski, Stanislaw; Wawrzenczyk, Czeslaw (Eds.) 41th International Symposium on Essential Oils (ISEI 2010) (2010, September)

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See detailWet etching optimization for arbitrarly shaped planar electrode structures
Rattanasonti, H; Sterling, RC; Srinivasan, P et al

in Proceedings of "MME 2010 Conference, The Netherlands" (2010, September)

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See detailThe Venus oxygen nightglow and density distributions
Soret, Lauriane ULiege; Gérard, Jean-Claude ULiege; Montmessin, Franck et al

Conference (2010, September)

Observing Venus nightglow is a key tool to understand the composition and the dynamics of its atmosphere. Results deduced from observations can be implemented to produce a data model of Venus atmosphere ... [more ▼]

Observing Venus nightglow is a key tool to understand the composition and the dynamics of its atmosphere. Results deduced from observations can be implemented to produce a data model of Venus atmosphere. For instance, the Visible and Infra-Red Thermal Imaging Spectrometer (VIRTIS) instrument on board the Venus Express spacecraft is very useful to analyze the O2(a1Δ) nightglow at 1.27 µm in the Venus mesosphere. Nadir observations can be used to create a statistical map of the emission on Venus nightside. It appears that the maximum of the emission is located near the antisolar point. Limb observations also provide information on the altitude and on the shape of the emission layer. Combining nadir observations and vertically integrated limb observations improves the statistics of the emission map on Venus nightside. An associated limb profile can also be deduced for any point of the nightside. Given all these O2(a1Δ) intensity profiles, O2* density profiles can be calculated. O density profiles can also be calculated as long as CO2 density profiles are available. These can be retrieved either from the VTS3 model or from SPICAV stellar occultation measurements. Finally, three-dimensional maps of excited molecular and atomic oxygen densities can be generated. The oxygen density map shows significant differences from the VTS3 model predictions. [less ▲]

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See detailPreliminary study of effects of anaerobic digestion of manure on VFA content and Odor concentration
Ubeda, Yolanda; Nicolas, Jacques ULiege; Calvet, S. et al

Conference (2010, September)

In this study, the potential reduction of odor of anaerobic digestion has been evaluated in three commercial facilities located in Belgium, Luxembourg and Germany. Odor concentrations were measured by ... [more ▼]

In this study, the potential reduction of odor of anaerobic digestion has been evaluated in three commercial facilities located in Belgium, Luxembourg and Germany. Odor concentrations were measured by olfactometric analyses in two different situations: at normal conditions and after the stirring the odor source. Parallel to these measures, representative samples were taken for digested and untreated manure and other co-substrates present in the facilities. Volatile solids, total solids, total suspended solids, volatile suspended solids, soluble chemical oxygen demand, ammonia nitrogen, total kjeldhal nitrogen, volatile fatty acids, and pH were determined in laboratory. The performance of anaerobic digestion in terms of VFA concentration reduction achieved values of 77-96%. Odor concentration was reduced by anaerobic digestion in the two studied scenarios: at normal conditions and after the stirring the odor source. No significant effect of anaerobic digestion on chemical analyses was observed, except for an increase in the ammonia nitrogen content. Significant correlations were found between the logarithm of odor concentration and different odor compounds (VFA, acetic, butyric, isobutyric, isovaleric). Correlations between odor concentration, VFA and other parameters (VS, VSS and pH) were also obtained. These results confirm that anaerobic digestion may reduce odor annoyance potential and VFA concentrations. In addition, odor concentration seems to be related with other chemical parameters, therefore more research is needed to obtain further conclusions. [less ▲]

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See detailEVALUATION OF THE AUTOMATIC IMAGE REGISTRATION FEATURES OF A KV CONE-BEAM CT IMAGING SYSTEM
JANVARY, Zsolt Levente ULiege; JANSEN, Nicolas ULiege; MATHOT, Michel ULiege 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 detailOdour evaluation of a dairy farm with anaerobic digestion
Ubeda, Yolanda; Neyrinck, Roland ULiege; Calvet, S. et al

Conference (2010, September)

The present work focuses on odour evaluation of a dairy farm with anaerobic digestion, located in the Luxembourg province (Belgium). This study pursues three main goals: 1.- To evaluate the effect of the ... [more ▼]

The present work focuses on odour evaluation of a dairy farm with anaerobic digestion, located in the Luxembourg province (Belgium). This study pursues three main goals: 1.- To evaluate the effect of the anaerobic digestion process on the odour level in the farm, 2.- To compare field and laboratory odour measurement techniques and 3.-To study the influence of the meteorological observation frequency on the odour plume, through the use of dispersion models. Three different approaches were used to characterize the odour: dynamic and field olfactometry and sniffing team method. Odour emissions from all sources were measured by duplicated through dynamic chamber and olfactometric analysis in two different situations: in normal conditions and after stirring the odour source. Two odour field measurement campaigns were conduced in the surroundings of the farm, and meteorological conditions were recorded two times per minute with a weather station. After comparing odour emissions with field measurements through dispersion modeling, we concluded that the best results were obtained using minimum and averaged odour emission rates. Emission rates measured in stirring conditions overestimated the reach of odour perceived in the field in three field campaigns. Overall odour emitted from the farm increased with the anaerobic digestion process. Although odour emission from digested manure is reduced in comparison with non-treated manure, the presence of agricultural wastes increases global odour emission. Finally, meteorological data were averaged each one, five and fifteen minutes. Odour shape was thinner and more extended with 15-minutes data, whereas it was larger and shorter with 30-secondes records. One minute and 5-minute values showed intermediate situations. In conclusion, different techniques to measure odours were compared in this study and, according to the results, field techniques seemed to be more realistic than dynamic olfactometry. [less ▲]

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

Poster (2010, September)

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See detailChosen, arranged or forced marriage: a case study
Duchêne, Judith ULiege

Conference (2010, September)

This paper is the result of an ethnographic research conducted in the Turkish and Moroccan communities of the Hodimont neighborhood in Verviers. The analysis aims to highlight the matrimonial strategies ... [more ▼]

This paper is the result of an ethnographic research conducted in the Turkish and Moroccan communities of the Hodimont neighborhood in Verviers. The analysis aims to highlight the matrimonial strategies and the influence of the community into these ones.   A triangular interaction between parents / child / community is at the hart of each wedding’s decision. The modality of this interaction – more or less flexible – seems to be crucial in the determination of the marriage’s form and in the constraining force that can weigh on young people for the choice of their partner. Moreover, every component of young people’s life within the community is influenced by the relations with the parents and the community members. Education, socialization, religious experience, gender perceptions, economic contingencies are dimensions that are crossed by parental and community recommendations. In this context, it can be hard for young people to find a right balance between the fulfillment of the family’s wills and the respect of their own desire. This situation might cause constraints or acts of violence but it might also produce reconciliations and self‐affirmations.   [less ▲]

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See detailCongenital hypogonadism in a man associated with normal immunoreactive LH, high FSH and azoospermia
Valdes Socin, Hernan Gonzalo ULiege; Chachati, A.; De Roux, N. et al

in European Neuroendocrine Association - Liège, 22-25 septembre 2010 (2010, September)

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See detailPlatelet-Rich Plasma injection to improve tendon healing process
Kaux, Jean-François ULiege; Drion, Pierre ULiege; Renouf, Julien et al

in Osteoarthritis and Cartilage (2010, September), 18(Supplement 2), 221

Introduction It is well known that injured tendons do not heal easily. For example, tendinopathy is a condition which often becomes chronic in the case of bad or late management. Recently, several studies ... [more ▼]

Introduction It is well known that injured tendons do not heal easily. For example, tendinopathy is a condition which often becomes chronic in the case of bad or late management. Recently, several studies, essentially in vitro and, more recently, a few in clinical practice, have demonstrated the positive effects of platelets on the healing process of different tissues. In fact, platelets contain lots of growth factors which can be released after a local injection. These growth factors have the potentiality to enhance the tendon healing process, for example after rupture or tendinopathy. The aim of our experiment was to ascertain whether the use of Platelet-Rich Plasma (PRP) was of interest for accelerating the healing process of Achilles tendon after surgical induced lesion. Methods All experimental procedures and protocols used in this investigation / were reviewed and approved by the Institutional Animal Care and Use Committee of the University of Liège. 60 rats were divided into 2 groups: A: control (no injection) and B: PRP injection. A 5mm defect was surgically induced in the rats’ Achilles tendon after resection of plantaris tendon. Rats of group B received a PRP injection in situ after the surgery. Afterwards, rats of both groups were placed in their cages without immobilization. After 5, 15 and 30 days, the traumatized Achilles tendons of 10 rats of both groups were removed and dissected during their healing process. Immediately after sampling, tendons were submitted to a biomechanical tensile test up to rupture, using a “Cryo-jaw”. Rats were then euthanized. Statistical analyses were made with an ANOVA. Values are significant when p-value is below 0.05. Results We observed that the force necessary to induce tendon rupture during biomechanical tensile testing increased with time in both groups; that this force was greater for tendons which had been submitted to an injection of PRP. The ratio between force and weight increased with time in both groups; that this ratio was greater for tendons which had been submitted to an injection of PRP too. There is also a significant interaction between time and the group. The surface area of the section of the tendons increased between 5 and 15 days followed by a stabilization. After 30 days, sections in both groups were similar. Thus, the constraint was similar after 5 and 15 days but is significantly better for PRP group after one month. Discussion – Conclusion We demonstrated that the force necessary to induce tendon rupture during biomechanical tensile testing was greater for tendons which had been submitted to an injection of PRP. These results were observed and significant (p<0.05) from day 5 onwards. We observed too that the section of the tendon was the same in both groups after 30 days. Thus the quality of the healing tendon is better with an injection of PRP, as shown with the increase of the constraint until rupture. Acknowledgement This experimentation was partially financed by “Standard de Liège 2007” and “Lejeune-Lechien 2008” grants. [less ▲]

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See detailVEGF-111 as a new therapeutic tool for tendon lesion
Kaux, Jean-François ULiege; Drion, Pierre ULiege; Libertiaux, Vincent ULiege et al

in Osteoarthritis and Cartilage (2010, September), 18(Supplement 2), 22

Introduction: Tendon lesion is one of the most frequent pathology in sports and by physical workers. This pathology often becomes chronic. For this reason, it is of interest to develop new treatments ... [more ▼]

Introduction: Tendon lesion is one of the most frequent pathology in sports and by physical workers. This pathology often becomes chronic. For this reason, it is of interest to develop new treatments. Injection of platelet-rich plasma (PRP) seems to be a promising one by releasing growth factors (GF) locally. Among all the GF released by activated platelets, the vascular endothelial growth factor-A (VEGF-A) is known to induce positive effects on vascular function and angiogenesis, and could be implicated in the healing process of tendons. Recently, a novel VEGF-A isoform was identified, the VEGF-111, a biologically active and proteolysis-resistant VEGF-A isoform, also known to present beneficial effects on ischemic diseases. This prompted us to evaluate whether VEFF-111 would have a therapeutic interest within the framework of the tendon pathology. Methods: 60 Rats were divided into 2 groups: A: control (no injection), B: VEGF-111 treatment. A 5mm defect was surgically induced in rat Achilles tendon after resection of plantaris tendon. Rats received a local injection of VEGF-111 (100ng) in situ after the surgery and were placed in their cages without immobilization. After 5, 15 and 30 days, the traumatized Achilles tendons of 10 rats of both groups were removed and dissected during their healing process. Immediately after sampling, tendons were submitted to a biomechanical tensile test up to rupture, using a “Cryo-jaw”. Rats were then euthanized. Statistical analyses were made with an ANOVA. Values are significant when p-value is below 0.05. Results: Our results shown that the developed force necessary to induce tendon rupture during biomechanical tensile test was greater for tendons which had received an injection of 100ng of VEGF-111. These results were already noticed from day 5 onwards. The ratio between force and weight increased with time in both groups, but this ratio was greater for tendons which had been submitted to an injection of VEGF111. The surface area of the section of the tendons increased between 5 and 15 days followed by a stabilization. After 30 days, sections in both groups were similar. Thus, the constraint was similar after 5 and 15 days but was better for VEGF111 group after one month. Discussion - Conclusion: This experimentation has shown that a 100ng injection of VEGF-111 stimulated tendon healing process as suggested by the increased force needed to break tendons during its healing process and the increased of constraint in comparison with the control group. Other experimentations with different concentration of VEGF111 are now in process. Acknowledgement This experimentation was partially financed by “Standard de Liège 2007” and “Lejeune-Lechien 2008” grants. [less ▲]

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See detailExploration des relations entre les capacités sémantiques et le manque du mot chez la personne âgée saine
Verhaegen, Clémence ULiege; Poncelet, Martine ULiege; 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 detailTOLERANCE INTERVALS AS CONTROL CHART: COMPARISON TO CLASSIC SHEWHART X̅-R CONTROL CHART
Marini Djang'Eing'A, Roland ULiege; Lambert, Véronique; Denooz, Raphael ULiege et al

Poster (2010, September)

Detailed reference viewed: 152 (44 ULiège)
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See detailA VALIDATED METHOD COMBINING SPE and HPLC-UV FOR THE QUANTIFICATION OF ROTENONEIN SEEDS OF YAM BEAN (PACHYRHIZUS SP.)
Lautié, Emmanuelle; Rozet, Eric ULiege; Hubert, Philippe ULiege et al

Poster (2010, September)

Detailed reference viewed: 138 (13 ULiège)
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See detailEtude des processus d’adaptation aux nouvelles technologies par l’analyse des communications : le cas de la chirurgie robotique
Blavier, Adelaïde ULiege; Nyssen, Anne-Sophie ULiege

Conference (2010, September)

Ce papier propose d’étudier les processus d’adaptation lors de l’introduction d’une nouvelle technologie en chirurgie, par l’analyse des communications recueillies en situation réelle. Nous avons comparé ... [more ▼]

Ce papier propose d’étudier les processus d’adaptation lors de l’introduction d’une nouvelle technologie en chirurgie, par l’analyse des communications recueillies en situation réelle. Nous avons comparé les communications lors de l’utilisation de deux techniques différentes (laparoscopie classique et système robotique, étude 1) ainsi que les communications lorsque les équipes sont composées de chirurgiens experts ou novices avec la nouvelle technologie (étude 2). Nous mettons également en évidence l’existence de deux types de communications qui se distinguent selon l’expertise des acteurs: 1) les communications qui traitent de la manipulation et de l’orientation spatiale, elles disparaissent avec l’expertise et mettent en évidence un stratégie d’adaptation à court terme ; 2) les ordres et les confirmations qui restent présentes dans la pratique experte et qui témoignent d’un changement radical de structure de la tâche, induisant un mode de contrôle symbolique basé sur l’adressage verbal et augmentant le coût cognitif dans les situations de télé-opération. Centre(s) de recherche : Centre d'expertise en psychotraumatisme et psychologie légale [less ▲]

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See detailGrazing with a mobile milking robot
Dufrasne, Isabelle ULiege; Robaye, Vincent ULiege; Istasse, Louis ULiege et al

in Schnyder, Hans; Isselstein, J.; Taube, F. (Eds.) et al Grassland in a changing world (2010, September)

The size of dairy cow herds in Europe is increasing. Farmers have to manage larger herds but want, at the same time, benefit from a normal social life. So, the milking robot can bring solutions. Its use ... [more ▼]

The size of dairy cow herds in Europe is increasing. Farmers have to manage larger herds but want, at the same time, benefit from a normal social life. So, the milking robot can bring solutions. Its use can reduce physical labour and allow flexibility. During the past 10 years, the number of milking robots has been increased in Europe. In farm practice, this technology has resulted in a reduction in the amount of grazing even though grazing appears as a natural practice which is appreciated by the consumers. At the experimental farm of the University of Liège, we are developing the concept of a mobile milking robot in collaboration with a private company. This prototype will allow cows to graze and could be moved to different locations on pastures during the grazing season. The prototype will be used indoors during the end of the winter season and will be moved outdoor during the 2010 grazing season. The feasibility of this prototype has to be tested in the field. Milk production and quality, the number of visits and the grazing parameters will be recorded. Different equipments in view to attract the cows to the robot as the presence of a cow brush, the location of the drinking point, will be compared. The behaviour of animals will be also assessed. [less ▲]

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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 ULiege; Raoelison, Guy E. et al

Poster (2010, September)

Detailed reference viewed: 108 (14 ULiège)
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See detailA Taxonomy of Distinctive Explanatory Business Failure Patterns amongst Small Firms : A Qualitative Approach
Crutzen, Nathalie ULiege; Van Caillie, Didier ULiege

in Cahier de Recherche du CEPE (2010, September)

Whereas it is obvious that the failure process can vary from one firm to another (Argenti, 1976; D'Aveni, 1989; Laitinen, 1991), to date, few researchers have worked on the detection of several ... [more ▼]

Whereas it is obvious that the failure process can vary from one firm to another (Argenti, 1976; D'Aveni, 1989; Laitinen, 1991), to date, few researchers have worked on the detection of several (explanatory or subsequent) failure patterns. In addition, none of the reviewed research really focuses on small firms while their failure is important and particular (Haswell and Holmes, 1989). Considering these observation and on the basis of an abductive and qualitative analysis (Thiétart, 2003), this paper identifies, among a sample of 208 small distressed firms, a taxonomy of five explanatory business failure patterns, i.e. five homogenous groups of small firms on the basis of the reasons for their failure. As the detection of the fundamental explanatory failure factors is the basis of failure prevention (Argenti, 1976), the identification of these patterns is of crucial importance for a better understanding and for a better prevention of this phenomenon amongst small businesses. [less ▲]

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

Poster (2010, September)

Detailed reference viewed: 69 (0 ULiège)
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See detailNature des traitements morphologiques chez les dyslexiques : une étude en amorçage masqué
Quemart, Pauline ULiege; Casalis, Séverine

Conference (2010, September)

Detailed reference viewed: 33 (2 ULiège)
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See detailTransfer of a conventional LC method for the screening of conterfeit antimalarial medicines to UHPLC
Nistor, Iolanda ULiege; Lecomte, Frédéric ULiege; Mbinze Kindenge, Jérémie et al

Poster (2010, September)

Detailed reference viewed: 128 (56 ULiège)
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See detailPrevalence of the mutation responsible for primary ciliary dyskinesia a large population of European and American old English sheepdogs
Merveille, Anne-Christine ULiege; Bataille, G.; Davis, E. et al

in 20th ECVIM Meeting - Toulouse - France - 9-12 septembre 2010 (2010, September)

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See detailInfluence du type de représentation visuelle sur l’évaluation de l’ambiance d’un espace architectural
Van de Vreken, Anne ULiege; Safin, Stéphane ULiege

in Proceedings of IHM 2010 : Conférence francophone sur l'interaction homme-machine. Luxembourg, 20-23 Septembre. (2010, September)

This paper describes the results of an experiment comparing the effectiveness and the impact of three kinds of usual architectural representation (plan, mock-up and virtual visit of a 3D model) for the ... [more ▼]

This paper describes the results of an experiment comparing the effectiveness and the impact of three kinds of usual architectural representation (plan, mock-up and virtual visit of a 3D model) for the perception of ambiances. We compare the judgments of people (inexperi- enced in the architecture domain) on 32 ambiance criteria, made on the basis of one of these representations. We compare these judgments on those made by the same participants on the basis of a visit of the real space. We conclude on propositions to enhance representation of ambiances in architecture. [less ▲]

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See detailRecherche de la mutation du gène CDKN1B dans les adénomes hypophysaires familiaux isolés (FIPA): analyse de 86 familles
Beckers, Albert ULiege; Tichomirowa, M.; Pellegata, N. et al

in Annales d'Endocrinologie (2010, September), 71(5), 398

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See detailSCREENIN G AND PREDICTING MALNUTRITION IN lUNG CANCER PATIENTS: DEVELOPING NEW TOOLS.
BARTHELEMY, Nicole ULiege; Donneau, Anne-Françoise ULiege; Haterte, Stéphanie ULiege et al

in Radiotherapy & Oncology (2010, September), 96(supp 1), 378

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See detailCotoneaster horizontalis on calcareous grasslands in Belgium : from ornament to management
Frisson, Gwenn ULiege; Piqueray, Julien ULiege; Halford, Mathieu ULiege 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 detailDioxin levels in European eels, a Belgian study
Focant, Jean-François ULiege; Geeraerts, C.; Eppe, Gauthier ULiege et al

in Organohalogen Compounds (2010, September)

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See detailEtude échocardiographique longitudinale chez des patients atteints de prolactinome et traités par cabergoline
Lancellotti, Patrizio ULiege; Latta, K.; O'Connor, Kim ULiege et al

in Annales d'Endocrinologie (2010, September), 71(5), 399

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See detailQUELLES TRANSFORMATIONS DU TRAVAIL COLLABORATIF ARCHITECTURAL INDUITES PAR L’UTILISATION DU « STUDIO DIGITAL COLLABORATIF » ?
Honigman, Ambre; Mayeur, Anaïs; Darses, Françoise et al

in 45ème Congrès de la Société d’Ergonomie de Langue Française (2010, September)

Cet article présente un pronostic des transformations du travail collaboratif architectural qui pourraient être induites par l’utilisation du Studio Digital Collaboratif (SDC). Ce dispositif permet à ... [more ▼]

Cet article présente un pronostic des transformations du travail collaboratif architectural qui pourraient être induites par l’utilisation du Studio Digital Collaboratif (SDC). Ce dispositif permet à l’architecte de collaborer avec d’autres protagonistes du projet, en dessinant, en annotant et en manipulant des esquisses « à distance » et « en coprésence » à l’aide d’un stylo électronique et d’un bureau digital connecté à internet. Dans le cadre de notre étude, l’environnement SDC a, pour la première fois, été implanté dans un contexte professionnel, à savoir dans un important cabinet d’architecture. En nous basant sur les méthodologies de l’observation et de l’entretien semi-dirigé, nous avons analysé les modes actuels de collaboration à distance en architecture (sans utilisation du SDC), de même que les transformations du travail induites par l’introduction du système. Les résultats ont montré que, malgré une utilisation peu fréquente, le SDC répond à une réelle utilité et présente des avantages certains, différents selon que son utilisation ait lieu en coprésence ou à distance. [less ▲]

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See detailMutations AIP chez les jeunes patients en-dessous de 30 ans avec adénome hypophysaire agressif
Beckers, Albert ULiege; Tichomirowa, M.; Barlier, A. et al

in 27ème Congrès de la Société Française d'Endocrinologie - Deauville, 29 septembre - 2 octobre 2010 (2010, September)

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See detailThermo-elastic distortion measurements by holographic interferometry and correlation with finite element models for SiC connections/junctions on spacecraft
Thizy, Cédric ULiege; Stockman, Yvan ULiege; Eliot, Fabienne et al

Conference (2010, September)

Scientific, earth observation and telecommunication spacecrafts are submitted to severe thermal environments while their mission performance requires more and more high stable structures. Due to on-ground ... [more ▼]

Scientific, earth observation and telecommunication spacecrafts are submitted to severe thermal environments while their mission performance requires more and more high stable structures. Due to on-ground constraints, the verification by test of the performances of these stable structures is usually limited. However accurate prediction methodology and verification capability of thermal distortions becomes mandatory for ensuring the in-orbit performance objectives of future programs. The main thermo-elastic contributors of the final stability performances are: - Material and assembly physical properties knowledge (Coefficient of Thermal Expansion, Young modulus, Poisson ratio…) - Modeling and simulation capabilities: temperature mapping, accurate thermo-elastic finite element models… - Verification test performances: advanced measurement techniques are required to characterize and determine the different main contributors to the final end to end performance and to perform accurate correlation. In this study, material characteristics are assumed to be well known. The objective was to improve and develop analytical predictions and verification of thermo elastic distortions using sample testing for modeling correlation. The samples have been chosen to be representative of the connections/junctions that can be encountered in stable structures on spacecraft and can have a dominant impact on the instrument stability. The results presented in this paper concern SiC/SiC and SiC/TA6V bonded and bolted samples. For the tests, temperature variations between -20°C and +15°C from ambient have been applied to the samples. Thermo-elastic distortions have been measured with a holographic camera. This holographic camera can measure displacements in the range of 20 nm to 20 m without physical contact with the samples. The tests results have been compared to the predictions obtained by Finite Element Modelling. From this comparison modelling guidelines have been issued with the aim of improving the accuracy of computed thermo elastic distortions: the FEM predictions lead to quite good correlation with the test data, with most of the time less than 10% discrepancies. A second phase to this study is planned. The objective is to implement all the benefits on improvement of thermo-elastic distortions predictions and verification achieved during the first phase on real spacecraft hardware. [less ▲]

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See detailSleep in Disorders of Consciousness
Schabus, Manuel; Cologan, Victor ULiege; 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 detailCaractérisation des facteurs associés à la perte d'expression de AIP dans les adénomes hypophysaires somatotropes
Jaffrain-Rea, M. L.; Angelini, M.; Tichomirowa, M. et al

in Annales d'Endocrinologie (2010, September), 71(5), 406

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See detailEmotion, faux souvenirs et vieillissement normal.
Dehon, Hedwige ULiege

in société française de psychologie: cognition, émotion et société - 52eme congrès (2010, September)

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See detailDiagnostico precoz de gestation en Ganado ovino mediante un kit enzimoimmunoanalisis (EIA) de la glicoproteina asociada a la gestation (PAG) plasmatica.
Alabart, J. L.; Lahoz, B.; Folch, J. et al

in Proceedings of the XXXV Congreso de la Sociedad Espanola de Ovinotechnia y Caprinotecnia (SEOC) (2010, September)

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See detailCan we really get rid of Japanese knotweed clones? Two years of management tests in Belgium
Monty, Arnaud ULiege; Delbart, Emmanuel ULiege; Mahy, Grégory ULiege 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 ULiege; 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 detailImplication of plasmacytoid dendritic cells in the malignant transformation of cervical epithelial metaplasia
Demoulin, Stéphanie ULiege; Herfs, Michael ULiege; Somja, Joan ULiege 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 detailGeostatistical analysis of primary and secondary data in a sandy aquifer at Mol/Dessel (Belgium)
Rogiers, Bart; Mallants, Dirk; Batelaan, Okke et al

in Cokx, L.; Van Meirvenne, M.; Bogaert, P. (Eds.) et al 8th International Conference on Geostatistics for Environmental Applications (GeoENV2010) (2010, September)

In the framework of the disposal of short-lived low- and intermediate-level radioactive waste in a near-surface disposal facility in Dessel, Belgium, additional extensive site characterization has been ... [more ▼]

In the framework of the disposal of short-lived low- and intermediate-level radioactive waste in a near-surface disposal facility in Dessel, Belgium, additional extensive site characterization has been performed in 2008. The gathered data now enclose 388 hydraulic conductivity measurements on samples of 8 cored boreholes. Secondary information as grain size analysis, porosity, and borehole geophysical parameters was also gathered. In addition, the geology of the study area has also been thoroughly characterized by a set of 178 cone penetration tests (CPTs) to approximate 50 m depth. This dataset allowed to refine the hydrostratigraphical model of the region. The existing groundwater model, based on large-scale effective hydraulic properties, was updated accordingly. The next step is a small-scale probabilistic approach 1) to validate the current existing deterministic groundwater models and 2) to support design for a monitoring network. In preparation for stochastic realizations of the subsurface, a geostatistical analysis of the available primary and secondary data is performed. [less ▲]

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See detailDirect multiple-point geostatistical simulation of edge properties for modeling thin irregularly-shaped surfaces
Huysmans, Marijke; Dassargues, Alain ULiege

in Cockx, L.; Van Meirvenne, M.; Bogaert, P. (Eds.) et al 8th International Conference On Geostatistics for Environmental Applications, GeoENV’2010 (2010, September)

Thin irregularly-shaped surfaces such as clay drapes often have a major control on flow and transport in heterogeneous porous media. Clay drapes are often complex curvilinear 3-dimensional surfaces and ... [more ▼]

Thin irregularly-shaped surfaces such as clay drapes often have a major control on flow and transport in heterogeneous porous media. Clay drapes are often complex curvilinear 3-dimensional surfaces and display a very complex spatial distribution. Variogram-based stochastic approaches are often also not able to describe the spatial distribution of clay drapes since complex, curvilinear, continuous and interconnected structures cannot be characterized using only two-point statistics. Multiple-point geostatistics aims to overcome the limitations of the variogram. The premise of multiple-point geostatistics is to move beyond two-point correlations between variables and to obtain (cross) correlation moments at three or more locations at a time using "training images" to characterize the patterns of geological heterogeneity. Multiple-point geostatistics is able to reproduce thin irregularly-shaped surfaces such as clay drapes but is often computationally intensive. To capture the thin surfaces, a small grid cell size should be adopted for the training image. This results in large training images and a large search template size and thus a large CPU and RAM demand (Huysmans and Dassargues, 2009). [less ▲]

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

Poster (2010, September)

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See detailStrategies for MSD prevention - A new model proposed by a Belgian task force
Somville, Pierre ULiege; Mairiaux, Philippe ULiege

in PREMUS 2010, Book of abstracts (2010, September)

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See detailRelation entre le regard expert et la mémoire visuelle à partir de l’enregistrement du mouvement oculaire
Blavier, Adelaïde ULiege; Nyssen, Anne-Sophie ULiege

Conference (2010, September)

Cette communication a pour objectif d’étudier le caractère adaptatif de la mémoire visuelle ainsi que ses limites. Nous comparons les performances mnésiques de sujets experts (historiens de l’art) et ... [more ▼]

Cette communication a pour objectif d’étudier le caractère adaptatif de la mémoire visuelle ainsi que ses limites. Nous comparons les performances mnésiques de sujets experts (historiens de l’art) et novices en fonction du mouvement du regard et en fonction du type de détail (background, intérêt central versus marginal). Nos données montrent que les experts n'explorent pas une oeuvre de la même façon que les novices. Ce premier résultat montre que le regard évolue en fonction des expériences passées. Nous mettons en évidence que la performance mnésique de tous les sujets dépend principalement de l’importance conceptuelle (les détails centraux sont mieux rappelés que les autres). En outre, nous montrons que les performances des novices sont influencées par le traitement visuel qu’ils sont opéré tandis que les experts se basent principalement sur leurs représentations mentales qu’ils ont en mémoire et cela, même si elles sont erronées. Ces études montrent le caractère adaptatif de la mémoire visuelle qui ne mémorise pas toute l’information visuelle traitée mais qui en sélectionne une partie avec les erreurs qui peuvent sous-tendre ce processus de sélection. [less ▲]

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See detailRelationship between dogs's signalement, biometric measurements and obesity
Ricci, Rebecca; Bevilacqua, F; Binato, S et al

in Liesegang, Annette; Wanner, Marcel (Eds.) Proceedings of the 14th Congress of the European Society of Veterinary and Comparative Nutrition. (2010, September)

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

Poster (2010, September)

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See detailBiological control formulations incorporating essential oils' components
Heuskin, Stéphanie ULiege; Lorge, Stéphanie; Wathelet, Jean-Paul ULiege et al

in Lochynski, Stanislaw; Wawrzenczyk, Czeslaw (Eds.) 41th International Symposium on Essential Oils - Programme and Book of Abstracts (2010, September)

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

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 detailL'esprit réflexif. Posture de recherche, approche sociolinguistique et indicateurs de réflexivité
Scheepers, Caroline ULiege

Conference (2010, September)

Dans le cadre de ma recherche doctorale (Scheepers, 2009), il s’est agi de solliciter, d’étayer et d’analyser des écrits réflexifs produits par de futurs instituteurs belges du primaire. Ont été plus ... [more ▼]

Dans le cadre de ma recherche doctorale (Scheepers, 2009), il s’est agi de solliciter, d’étayer et d’analyser des écrits réflexifs produits par de futurs instituteurs belges du primaire. Ont été plus spécifiquement étudiées des traces sémiotiques comme le journal de formation, les brouillons du travail de fin d’études et les versions finales des travaux de fin d’études (TFE). La présente contribution sera plus particulièrement consacrée à la discussion des dimensions méthodologiques des travaux entrepris. En effet, si les recherches consacrées à la réflexivité se multiplient à l’heure actuelle (entre autres, Chabanne et Bucheton, 2002 ; Thyrion et Dufays, 2004 ; Vanhulle, 2002 ; Dejemeppe et Dezutter, 2001 ; Crinon, 2002), la méthodologie qui les sous-tend n’est pas toujours explicitée. Dans d’autres travaux, les données sont quelquefois « racontées » et non interprétées. À la suite des démarches entreprises depuis quelques années par les chercheurs lillois à propos des méthodes de recherche en didactiques (entre autres, Lahanier-Reuter et Roditi, 2007), il me parait intéressant de débattre des choix méthodologiques adoptés par les chercheurs dès lors qu’ils envisagent la problématique de l’écriture réflexive en formation. Il me semble que cette discussion est de nature à contribuer à l’autonomisation et à la légitimation des recherches en éducation. [less ▲]

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See detailGroundwater model parameter identification using a combination of cone-penetration tests and borehole data
Rogiers, Bart; Schiltz, Marco; Beerten, Koen et al

in International Groundwater Symposium 2010, IAHR (2010, September)

In the framework of the disposal of short-lived low- and intermediate-level radioactive waste in a near-surface disposal facility in Dessel, Belgium, additional extensive site characterisation has been ... [more ▼]

In the framework of the disposal of short-lived low- and intermediate-level radioactive waste in a near-surface disposal facility in Dessel, Belgium, additional extensive site characterisation has been performed in 2008. The gathered data now include 388 hydraulic conductivity measurements on samples from 8 cored boreholes. Detailed characterisation of these cored boreholes, together with geophysical logging, enabled to identify various hydrostratigraphical units at 8 discrete locations in the research area. Various analyses were performed on the cores, yielding information on grain size, mineralogy, density and total porosity. Geophysical logging parameters were derived from gamma-ray and resistivity measurements. Subsequently, an extensive geotechnical logging campaign was performed in order to establish a 3D-model of the hydrostratigraphical units, based on a dense network of investigation points. About 180 cone penetration tests (CPTs) were executed and lithology was deduced in detail based on existing soil classi cation charts. As such, a description of the regional subsurface up to depths of nearly 50 m was established, and this information was integrated with the borehole data. Most importantly, the lateral extent, depth and thickness of a hydrogeologically important aquitard was identi fied. Based on the 2008 site characterisation results and their interpretation, an update of a ground- water fl ow model used in safety assessments was made. The CPT-based stratigraphic model and the hydraulic conductivity data determined at different scales were combined into a new 3D hydrostratigraphical model. The small-scale measurements (on 100 cm³ core samples) are compared with hydraulic conductivity values obtained from pumping tests and the large-scale parameters derived by inverse modelling. The performance of the original and the updated flow model are compared. The presented approach was succesfull in substantially decreasing the conceptual model and parameter uncertainty and resulted in an improved calibration of the groundwater flow model. [less ▲]

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See detailDosage de la 25-OH vitamine D: attention aux erreurs analytiques!
Cavalier, Etienne ULiege; Carlisi, Ignazia ULiege; Delanaye, Pierre ULiege et al

in Congrès de la Société Française d'Endocrinologie (2010, September)

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See detailEffect of an energy restricted diet in weight loss and haptoglobin concentration in Beagle dogs
Ricci, Rebecca; Jeusette, Isabelle; Godeau, Jean-Marie ULiege et al

in WALTHAM (Ed.) The WALTHAM International Nutritional Sciences Symposium " Pet Nutrition - Art or science ? " (2010, September)

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See detailRelationship between dog's lifestyle and obesity
Bevilacqua, F; Ricci, Rebecca; Binato, S et al

in Liesegang, Annette; Wanner, Marcel (Eds.) Proceedings of the 14th Congress of the ESVCN (2010, September)

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See detailA new method to enumerate low level of Listeria monocyogenes and Salmonella spp. in meat products
Delhalle, L.; Adolphe, Y; Jasick, A. et al

Poster (2010, September)

Micro-organisms counting techniques are a subject of major concern in the field of food hygiene. The European Community Regulation No 2073/2005 defined a quantitative limit for 100 cfu.g-1 which was is ... [more ▼]

Micro-organisms counting techniques are a subject of major concern in the field of food hygiene. The European Community Regulation No 2073/2005 defined a quantitative limit for 100 cfu.g-1 which was is applicable for certain types of food during their shelf life. However an adequate counting method for low contaminating levels is still lacking. The EN ISO 11290-2 European and International Standard method for enumeration of Listeria monocytogenes is characterized by a limit of enumeration of 10-100 cfu.g-1, and a poor accuracy. Recently a new method has been developed to enumerate L. monocytogenes at low contamination levels in several food matrices using a membrane filtration method (Baudouin et al., 2009). This method uses a combined enzyme/surfactant treatment to solubilize food components which increases handling period. The aim of the present work was to develop a new method to enumerate L. monocytogenes and Salmonella spp. at low concentration on meat products. This method is based on membrane filtration method without using treatment to solubilize food components. White pudding has been used as “experimental matrix” and artificially contaminated on surface with 4-12 cfu.g-1 of L. monocytogenes or Salmonella spp. For enumeration, 25 g of samples were placed into a plastic bag and homogenised in water peptone buffer (dilution 1/10) for 30 sec using a Pulsifier. Food suspension was filtered on a single use membrane of 47 mm diameter and 0.45 µm pore size. The filters were laid on specific plated media. To compare with a control, 25 g of samples were placed in classic Stomacher bags with a mesh screen liner (280 µm pore size) and homogenised using a Mix 2 Stomacher apparatus with the same dilution as above. A volume of 1 ml of filtered food suspension was laid on specific plated media according to EN ISO 11290-2 standard. Enumeration results obtained with the two methods are statically similar but the new one is easier, cheaper to carry out, and more sensitive. Moreover this methodology is faster than methods previously described and non destructive: food components solubilisation step is no more necessary. Preliminary tests were carried out using minced meat and, due to meat texture, problems with clog membrane occurred, therefore this method should be improved. This new method is useful for simulating the contamination level commonly found in food industries. [less ▲]

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

Poster (2010, September)

Detailed reference viewed: 144 (44 ULiège)
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See detailE-voting: Eid Card in action
Parotte, Céline ULiege

Conference (2010, September)

Presentation included in the track number 4 of EASST conference: What objects do: design, consumption and social practices.

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See detailRobustness of steel and composite buildings under impact loading
Coméliau, Ludivine ULiege; Demonceau, Jean-François ULiege; Jaspart, Jean-Pierre ULiege

in Batista, E.; Vellasco, P.; de Lima, L. (Eds.) Proceedings of the SDSS'Rio 2010 conference (2010, September)

In case of a vehicle impact against a building frame, one or more columns may be damaged or even fully destroyed. In such an exceptional event, the risk of progressive collapse of the whole structure has ... [more ▼]

In case of a vehicle impact against a building frame, one or more columns may be damaged or even fully destroyed. In such an exceptional event, the risk of progressive collapse of the whole structure has to be mitigated. Several approaches potentially exist to face this problem. In the present study, the so-called alternative load path method is followed. In two recent PhD studies at Liège University, a complete analytical procedure was developed permitting the prediction of the structural response of steel or composite plane frames further to the loss of a column. For sake of simplicity, these first works were based on the assumption of static behaviour. More recently, complementary research was carried out with the objective to address the dynamic effects. As a result, an original procedure for the appraisal of the structural robustness of plane building frames was proposed. The present paper presents this work. [less ▲]

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See detailLa santé mentale en mutation. Une poltique du savoir en formation
Cerfontaine, Gaëtan ULiege; Thunus, Sophie ULiege

in DEGARVRE, FLORENCE; DESMETTE, DONATIENNE; MANGEZ, ERIC (Eds.) et al Transformations et innovations économiques et sociales en Europe: quelles sorties de crise? Regards interdisciplinaires. (2010, September)

Cette contribution propose une analyse du rôle des savoirs dans la réforme du champ de la santé mentale en Belgique. Celle-ci est appréhendée en tant que processus de changement au cours duquel l’action ... [more ▼]

Cette contribution propose une analyse du rôle des savoirs dans la réforme du champ de la santé mentale en Belgique. Celle-ci est appréhendée en tant que processus de changement au cours duquel l’action publique en santé mentale est influencée par des institutions internationales, à l’image de l’OMS ou de l’Union Européenne. Le compte-rendu de ce processus donne à voir comment la construction d’une « nouvelle » prise en charge en psychiatrie, au carrefour d’enjeux politiques, sociaux et économiques, a été performée par les savoirs issus de la branche santé mentale de l’OMS. Par ailleurs, les transformations du champ de la santé mentale en Belgique nous invitent à considérer l’autorité qu’acquièrent ces savoirs internationaux, au gré d’un processus dans lequel ils sont constamment mobilisés, pour penser l’innovation et pour la légitimer. Finalement, l’action en santé mentale témoigne d’un travail herméneutique, qui confère à ces savoirs une rationalité autonome. [less ▲]

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See detailStrategic Decision Making For Zero Energy Buildings in Hot Climates
Attia, Shady ULiege; De Herde, André

in Proceedings of EuroSun 2010 (2010, September)

The Net Zero Energy Buildings (NZEBs) objective has raised the bar for sustainable development among architects and developers in hot climates. The objective of this paper is to investigate the influence ... [more ▼]

The Net Zero Energy Buildings (NZEBs) objective has raised the bar for sustainable development among architects and developers in hot climates. The objective of this paper is to investigate the influence of setting a zero energy objective for existing buildings in hot climates. The paper compares the impact of passive and actives design strategies on energy consumption and comfort. Using EnergyPlus for energy simulation, an existing prototype of a residential apartment module will be used to evaluate energy performance and thermal comfort in two parametric series. The first one is the result of passive design strategies and the second one is guided by active solar strategies. Results show active design strategies can be reliable for constant energy generation for buildings in the existing urban context. However, the zero energy building objective needs to be the considered from early design phases during urban and architectural design process. [less ▲]

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See detailBioassay-guided isolation of antiplasmodial Strychnos alkaloids from the stem-bark of Strychnos icaja BAILLON
Tchinda Tiabou, Alembert ULiege; Tamze, Victorine; Frederich, Michel ULiege et al

in Planta Medica (2010, September), 76(12), 1305

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See detailFaites vos Je. Posture énonciative et élaboration de savoirs
Scheepers, Caroline ULiege

Conference (2010, September)

En Communauté française de Belgique, les futurs instituteurs du primaire sont tenus d’élaborer un travail de fin d’études (TFE), qui s’apparente assez bien au mémoire professionnel français. Ma ... [more ▼]

En Communauté française de Belgique, les futurs instituteurs du primaire sont tenus d’élaborer un travail de fin d’études (TFE), qui s’apparente assez bien au mémoire professionnel français. Ma contribution envisage les TFE analysés, tous inscrits dans le champ de la didactique du français, sous l’angle spécifique des savoirs. Dans le TFE, lequel s’affilie aux écrits réflexifs et scientifiques en formation, le scripteur est invité à mobiliser et à construire des savoirs académiques et professionnels, généralement pour fonder, décrire et interpréter un dispositif qu’il a expérimenté en stage. L’analyse se veut, dans un premier temps du moins, descriptive et compréhensive : le principe est d’identifier des indicateurs de réflexivité pouvant révéler des pratiques langagières différenciées/différenciatrices (Bautier, 1995), pratiques susceptibles de constituer des constellations idéal-typiques. La question des savoirs s’avère décisive pour dégager des postures réflexives hétérogènes. Six postures distinctes ont été mises au jour. [less ▲]

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See detailTotal error as natural decision criteria for analytical methods validation and transfer
Rozet, Eric ULiege; Boulanger, Bruno ULiege; Dewe et al

Conference (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 ULiege; WONNER, Michel ULiege; JANVARY, Zsolt Levente ULiege 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 detailNEW INSIGHTS INTO THE Early EVOLUTION OF LiFe: EVIDENCE FROM THE pilbara craton
Sugitani, Ken; Grey, Kath; Van Kranendonk, Martin et al

Conference (2010, September)

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See detailAnti-inflammatory potency of the traditionally used antimalarial plant Fagraea fragrans
Jonville, Marie ULiege; Baghdikian, Béatrice; Ollivier, Evelyne et al

in Planta Medica (2010, September), 76(12), 1171

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See detailAntioxidant activity of Passiflora edulis and Passiflora alata fruits
Yariwake, J.; Zeraik, M.; Serteyn, Didier ULiege et al

in Planta Medica (2010, September), 76(12), 1274-1275

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See detailHigh Kisspeptine-10 levels in obese hypogonadic patients : is kisspeptine-10 a periheral signal between metabolism and reproduction
Valdes Socin, Hernan Gonzalo ULiege; Cavalier, Etienne ULiege; Beckaert, A. C. et al

in European Neuroendocrine Association - Liège, 22-25 septembre 2010 (2010, September)

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See detailConsensus on Nonlinear Spaces
Sepulchre, Rodolphe ULiege

in Proceedings of the 8th IFAC Symposium on Nonlinear Control Systems (2010, September)

Consensus problems have attracted significant attention in the control community over the last decade. They act as a rich source of new mathematical problems pertaining to the growing field of cooperative ... [more ▼]

Consensus problems have attracted significant attention in the control community over the last decade. They act as a rich source of new mathematical problems pertaining to the growing field of cooperative and distributed control. This paper is an introduction to consensus problems whose underlying state-space is not a linear space, but instead a highly symmetric nonlinear space such as the circle and other relevant generalizations. A geometric approach is shown to highlight the connection between several fundamental models of consensus, synchronization, and coordination, to raise significant global convergence issues not present in linear models, and to be relevant for a number of engineering applications, including the design of planar or spatial coordinated motions. [less ▲]

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

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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