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See detailFatigue resistant designs using stress-based topology optimization
Collet, Maxime ULiege; Bauduin, Simon ULiege; Fernandez Sanchez, Eduardo Felipe ULiege et al

Conference (2017, September 15)

Fatigue is an important mode of failure in mechanical engineering and accounting for it as soon as the early stage of design using topology optimization sounds primordial. Structures undergoing high-cycle ... [more ▼]

Fatigue is an important mode of failure in mechanical engineering and accounting for it as soon as the early stage of design using topology optimization sounds primordial. Structures undergoing high-cycle fatigue can be described by the stress-based approach and then a stress-based topology optimization framework, which has received great interest since almost 20 years because of the innovative designs that can be achieved to answer strength requirements, can be used. Literature reports many good results for shape optimization [Mrzyglod & Zielinsky(2006)] whereas in the eld of topology optimization several authors have shown that considering fatigue in an optimization framework leads to more relevant solutions where fluctuating loads are involved [Holmberg E.(2015), Collet et al(2016), Sv ard(2015)]. The good behaviour of the implementation of an advanced fatigue criterion, i.e. the multiaxial Dang Van criterion [Dang Van et al(1989)] is first investigated in the framework of a density-based topology optimization problem. The choice of this fatigue criterion is justifed by its good applicability in automotive or aeronautic industry as well as its relevancy with respect to experimental results. We present the sensitivity analysis with stress constraints and present some classical benchmarks to illustrate the behaviour of the optimized solution. In a second time, the fatigue resistance is introduced in the well-known microstructural design [Sigmund (2000)] also know as architectured material design which are now considered in mechanical engineering because of their manufacturability thanks to additive manufacturing processes. Ensuring the fatigue resistance of the cellular material will by extension ensure the structural integrity of the overall structure itself. The optimization is performed by using the MMA optimizer [Svanberg(1987)] whereas the singularity phenomenon of the stress constraints is circumvented by using the qp-relaxation [Bruggi(2008)]. Both types of optimization framework are evaluated in term of their numerical performances and are compared to classical results generated by a regular stress-based topology optimization. Finally, the results are 3D-printed to assess for their manufacturability. [less ▲]

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See detailMusic in the Operating Room
XHAUFLAIRE, Gaël ULiege; Albert, Louisa; Gengoux, Monique

Poster (2017, September 15)

Listening to music during surgery has a subjective benefit to patients under local anesthesia. Its setting up during quiet routine oculoplastic surgery is easy and inexpensive. When subject to some ... [more ▼]

Listening to music during surgery has a subjective benefit to patients under local anesthesia. Its setting up during quiet routine oculoplastic surgery is easy and inexpensive. When subject to some elementary precautions, there is no increased risk. [less ▲]

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See detailLes documents d'urbanisme. Vers quel typologies de représentation sous le paradigme du BIM ?
Boutemadja, Abdelkader ULiege

Conference (2017, September 14)

Sous le nouveau paradigme du BIM et du SIG 3D, quel typologies de représentation graphique doivent adopter les documents d'urbanisme. Il s'agit d'une reflexion qui donne à entrevoir les possibilités de ... [more ▼]

Sous le nouveau paradigme du BIM et du SIG 3D, quel typologies de représentation graphique doivent adopter les documents d'urbanisme. Il s'agit d'une reflexion qui donne à entrevoir les possibilités de représentation qu'offrent les nouvelles technologies. [less ▲]

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See detailThe artistic patronage of Cardinal Charles II de Bourbon (1433-1488)
Laruelle, Anne-Sophie ULiege

Conference (2017, September 14)

As one of the most important political and religious figures of the mid-fifteenth century, Charles II de Bourbon (1433-1488) has not received the attention he deserves. Charles, archbishop of Lyon (1446 ... [more ▼]

As one of the most important political and religious figures of the mid-fifteenth century, Charles II de Bourbon (1433-1488) has not received the attention he deserves. Charles, archbishop of Lyon (1446), was made cardinal by the pope Sixtus IV in 1476. He was also an important courtier, and a confidant of King Louis XI of France, to whom he was related by marriage. Charles was present at the interview of Kings Louis XI and Edward IV of England in 1475 and in the signature of the peace treaty concluded between them, which formally ended the Hundred Years’ War. Among other posts, Charles held the governorship of Paris and was the head of the King’s Council. Grandson of John the Fearless and cousin to Charles the Bold, he also bore numerous connections with the Burgundian Court and the Southern Netherlands. This paper aims at re-appreciating the artistic patronage of the wealthy cardinal, in spite of the difficulties raised by the paucity of surviving artworks he commissioned. Charles was indeed an important patron, who founded a splendid funerary chapel in Lyon Cathedral, and had the archiepiscopal palace of Lyon built. The cardinal owned a lot of exceptional manuscripts, sculptures and tapestries. Due to his position, Charles may have influenced tastes of Louis XI for the arts, but also the future king Charles VIII’s (Charles de Bourbon was, along with Joan of Valois, Duchess of Bourbon and Edward of Westminster, godparent of the dauphin in 1470).Particular attention will be paid to his collection of tapestries, which have never received detailed analysis. Charles II de Bourbon’s arms (motto, initials, and his device of a flaming sword) appear on only three pieces today: “The Adoration of the Magi”, “The Three Coronations” (both preserved in Sens cathedral), and a scene from the “Story of Hercules” (Mobilier National, Paris). Woven with extremely high quality, probably in the Southern Netherlands, the cardinal’s tapestries are undoubtedly among the finest and most expensive pieces of the 15th century. [less ▲]

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See detail5. Froment 2017: une récolte hâtive et étalée avec une qualité moyenne
Sinnaeve, Georges; Gofflot, Sébastien; Chandelier, Anne et al

in Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2017, September 14)

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See detail2. Variétés
Meza Morales, Walter ULiege; Jacquemin, Guillaume; Dumont, Benjamin ULiege et al

in Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2017, September 14)

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See detailFrom Metabolomics Study of Age-Related Macular Degeneration (AMD) to the Development of New Pyruvate Dehydrogenase Kinase Inhibitors (PDK)
Arslan, Deniz ULiege; Schoumacher, Matthieu ULiege; Pirotte, Bernard ULiege et al

Poster (2017, September 14)

Age-related macular degeneration (AMD) is a leading cause of blindness in the elderly population of industrialized countries. This blindness results from the deterioration of the macula, a small part of ... [more ▼]

Age-related macular degeneration (AMD) is a leading cause of blindness in the elderly population of industrialized countries. This blindness results from the deterioration of the macula, a small part of the retina specialized for the high-acuity vision. Exudative AMD, called “wet”, is characterized by the formation of new blood vessels growing under the retina according to a process named choroidal neovascularization (CNV). Currently, the aetiology and pathogenesis of AMD remain unclear. Nevertheless, a recent metabolomics study performed on the serum of “wet” AMD patients and on a CNV murine model, that mimics the effect of “wet” AMD, have demonstrated that lactate level is clearly involved in the severity of the pathology as well as the relationship between lactate, CNV and AMD [1]. According to this result, we suggest a new therapeutic approach of AMD based on the normalization of blood lactate level. The modulation of the lactate plasma concentration by treatment of the animals with synthetic compounds and more specifically Pyruvate Dehydrogenase Kinase (PDK) inhibitors significantly decrease the CNV. PDK and its four isoforms (PDK1-4) regulate the activity of the pyruvate dehydrogenase complex (PDH), a mitochondrial enzyme that plays a major role in the metabolic pathway of glucose, by reversible phosphorylation. Starting from these results, development of new PDK inhibitors could open the way to innovative treatment opportunities in AMD disease. Different analogues of (R)-3,3,3-trifluoro-2-hydroxy-2-methylpropanamide (fig.1) have been already synthetized and pharmacological evaluation is currently in progress. According to the results obtained, various pharmacomodulations will be investigated. [less ▲]

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See detailExecutive functions in normal aging: the mediating effect of processing speed and attentional system
Gilsoul, Jessica ULiege; Simon, Jessica ULiege; Collette, Fabienne ULiege

Poster (2017, September 14)

Objective The normal aging is associated with decrease in executive functioning efficiency. However, the source of these cognitive difficulties could reside in some factors that are not executive per se ... [more ▼]

Objective The normal aging is associated with decrease in executive functioning efficiency. However, the source of these cognitive difficulties could reside in some factors that are not executive per se. Therefore, this present study is aimed at determining whether speed of processing and attentional variables would mediate the effect of age on the executive functioning. Participants and Methods Young (n = 104) and old (n = 63) participants were enrolled and carried out a large battery made of 21 executive (inhibition, shifting, working memory updating, and double task coordination), attentional (phasic alertness, selective attention, and sustained attention), and processing speed tasks. Based on Baron & Kenny’s recommendations (1986), mediation models of the age effect on the executive functioning were carried out with processing speed and attentional system taken as mediators. Results Selective attention significantly mediated the effect of age on working memory updating [􀇻R2 = 7%, p < .001]. Moreover, processing speed significantly mediated the effect of age on shifting [􀇻R2 = 7%, p < .001], working memory updating [􀇻R2 = 5%, p < .001], and double task coordination [􀇻R2 = 14%, p < .001]. Conclusions The mediating effect of age on most of the executive functions by measures of processing speed is in agreement with the literature showing a major influence of the slowdown of the processing speed on cognition (Salthouse, 1992; 2000; 2005). The age effect on inhibition did not seem to be mediated neither by the attentional variables nor the speed variables, which is in accordance with Zacks & Hasher’s hypothesis (1988). According to these authors, inhibition would be the first cognitive function to decline with age. [less ▲]

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See detail1. Implantation des cultures
Eylenbosch, Damien ULiege; Meza Morales, Walter ULiege; Monfort, Bruno et al

in Bodson, Bernard; Watillon, Bernard (Eds.) Livre Blanc Céréales (2017, September 14)

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See detailToward discovery of novel key genes for pancreatic beta cell regeneration in zebrafish
Carril Pardo, Claudio Andrès ULiege; Bergemann, David ULiege; Massoz, Laura ULiege et al

Poster (2017, September 14)

Diabetes is becoming a leading health issue worldwide. It occurs under insulin resistance/deficiency and when insulin-producing pancreatic beta-cell mass is dramatically reduced. Besides therapeutic ... [more ▼]

Diabetes is becoming a leading health issue worldwide. It occurs under insulin resistance/deficiency and when insulin-producing pancreatic beta-cell mass is dramatically reduced. Besides therapeutic strategies to preserve beta-cell mass and function and improve insulin treatments, beta-cell replacement constitutes a promising alternative to replenish the pancreas with functional beta-cells. Several observations of pancreatic cell plasticity has led to the hope that triggering beta-cell regeneration within the pancreas could be harnessed in future therapies. Still, mammals show limited regenerative capabilities, making difficult the study of these mechanisms. In contrast, zebrafish is extensively used for regeneration studies notably of beta-cells. We recently showed that the adult zebrafish ducts display characteristics of embryonic pancreatic progenitors that can give rise to beta-cells in physiological and induced diabetic condition*, and we determined the transcriptomic profile of zebrafish pancreatic ducts during beta-cell regeneration. To identify new genes crucial for beta-cell regeneration we plan to investigate the role of about 10 selected candidate genes by analyzing invalidating mutations created by CRISPR/Cas9. Their effect on beta-cell regeneration will be studied in 7-20 old larvae which we have established as experimental platform for functional studies. This project should help decipher the molecular mechanism of beta-cell regeneration. [less ▲]

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Peer Reviewed
See detailFrom one crisis (1929) to another (2008) : discussion of some critical issues in the framework of a long-term political economy of punishment
Vanneste, Charlotte ULiege

Conference (2017, September 14)

The wide angle adopted for our long-term analysis of Belgian data allows us to place in perspective two crucial moments of economic history, the two financial crises of 1929 and 2008. Economists have ... [more ▼]

The wide angle adopted for our long-term analysis of Belgian data allows us to place in perspective two crucial moments of economic history, the two financial crises of 1929 and 2008. Economists have established several parallels between these two historical periods and our long-term approach provides an opportunity to examine their respective impacts in terms of punishment. Notwithstanding the short hindsight for the second crisis, key issues are emerging from the analysis of both discourses and statistical (national and international) indicators, both in the socioeconomic and political spheres and in the penal field. Could the recent crisis and its consequences predict that we are at a threshold in terms of the use of punishment? Which ‘ingredients’ are at stake in the possible future trends? We propose to explore these questions in light of some available data. [less ▲]

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See detailModélisation des mécanismes psychologiques du processus de radicalisation
Garcet, Serge ULiege

Conference (2017, September 14)

Detailed reference viewed: 67 (4 ULiège)
See detailDevelopment of SERS nanosensors for the detection of small bioactive molecules by cellular analysis in complex matrices: Application to dopamine
Dumont, Elodie ULiege; De Bleye, Charlotte ULiege; Cailletaud, Johan ULiege et al

Conference (2017, September 13)

This communication reports the different steps undertaken in order to develop a new Surface-Enhanced Raman Scattering (SERS) nanosensor for the quantification of dopamine in the culture medium of PC-12 ... [more ▼]

This communication reports the different steps undertaken in order to develop a new Surface-Enhanced Raman Scattering (SERS) nanosensor for the quantification of dopamine in the culture medium of PC-12 cells. First, the synthesis of the SERS substrate, gold nanoparticles, and its characterization. Then the development of the method with the help of a design of experiments and the demonstration of the specificity of the method over other structurally related catecholamines. And finally, the implementation of the method on the culture medium of PC-12 cells, on an HEPES buffer having served to wash the cells and on the PC-12 cells. [less ▲]

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See detailHow to distinguish between nouns and classifiers in Binominal Naming Constructions? Answers from two Western Amazonian languages
Van linden, An ULiege; Rose, Françoise

Conference (2017, September 13)

Western Amazonian languages stand out in showing classifiers that – in addition to the well-established classifier environments – also appear as derivational devices on nouns (Payne 1987; Aikhenvald 2000 ... [more ▼]

Western Amazonian languages stand out in showing classifiers that – in addition to the well-established classifier environments – also appear as derivational devices on nouns (Payne 1987; Aikhenvald 2000; Seifart & Payne 2007). Since classifiers are commonly assumed to originate in nouns (Aikhenvald 2000), classifier languages confront us with an analytical problem in the domain of Binominal Naming Constructions (BNCs), i.e. how to distinguish between the derivational use of classifiers on nouns (1)-(2) and noun-noun compounds (3)-(4). The present paper addresses this problem on the basis of primary data collected on Harakmbut (isolate, Peru), e.g. (1) and (3), and Mojeño Trinitario (Arawak, Bolivia), e.g. (2) and (4), two unrelated (and not in contact) Western Amazonian languages. While Mojeño Trinitario will be shown to be a multiple classifier language with an extensive set of classifiers, Harakmbut turns out to show (a small set of) classifiers only, in fewer environments. Yet, both languages will appear to behave strikingly similarly in the domain of BNCs. (1) classifier-derived nouns in Harakmbut a) siro-pi metal-CLF:stick ‘knife’ (cf. Hart 1963: 1) b) siro-pu’ metal-CLF:cylindrical;hollow ‘metal tube’ (cf. Hart 1963: 1) (2) classifier-derived nouns in Mojeño Trinitario a) yuk(u)-pi fire-CLF:long;flexible ‘candle’ b) wray(u)-'a chicken-CLF:oval ‘chicken egg’ (3) noun-noun compounds in Harakmbut a) ndumba-kuwa forest-dog ‘bush dog’ (Helberg 1984: 252; Tripp 1995: 194) b) äwït-ku giant.otter-head ‘giant otter’s head; person with giant otter’s head’ (4) noun-noun compounds in Mojeño Trinitario a) mari-chóchoku stone-river.bank ‘stony riverbank’ b) paku-miro dog-face ‘dog’s face; person with dog’s face’ In this paper, we will discuss how noun-classifier derivation compares to noun-noun compounding at the phonological, prosodic, semantic and syntactic levels in both Harakmbut and Mojeño Trinitario. For example, noun-noun compounds consist of clear “Thing-roots” (Haspelmath 2012) in both languages, with one element being the morphosyntactic and semantic head. In noun-CLF formations, however, classifiers do not really denote a “thing”, but rather a shape or quality; they do not contain a head. As a factor bearing on this analytical problem, we will show that in both languages the noun/classifier distinction is blurred by the fact that there is a class of nouns that share many features with the canonical classifiers. In both languages, these nouns refer to parts of entities, such as bodyparts, cf. (3b) and (4b), or plant parts. Morphologically, these are bound roots, which require affixation to obtain independent nominal status, specifically possessor prefixes in Mojeño Trinitario and (semantically empty) nominalizing prefixes in Harakmbut. Interestingly, in both languages such N-N compounds as (3b) and (4b) can be used as endocentric compounds in their literal sense, but they can also be used exocentrically to refer to a person whose (physical) characteristics resemble those of the referent of the endocentric compound. In Mojeño Trinitario, such exocentric uses take determiners for human referents, whereas neither component noun refers to a human entity (Harakmbut lacks any formal indication for such uses). More generally, we will examine to what extent these bound nouns can be analysed as incipient classifiers, and formulate diachronic hypotheses informed by our analysis of BNCs. [less ▲]

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See detailInfluences of feeding behaviour and forage quality on diurnal methane emission dynamics of grazing cows
Blaise, Yannick ULiege; Andriamandroso, Andriamasinoro ULiege; Heinesch, Bernard ULiege et al

in Berckmans, Daniel; Keita, Keita (Eds.) Precision Livestock Farming ‘17 (2017, September 12)

This study aimed to evaluate diurnal methane (CH4) emission dynamics of grazing cattle and highlight their relationships with biotic factors such as the feeding behaviour as well as seasonal changes in ... [more ▼]

This study aimed to evaluate diurnal methane (CH4) emission dynamics of grazing cattle and highlight their relationships with biotic factors such as the feeding behaviour as well as seasonal changes in pasture characteristics. Existing methods to assess grazing ruminants’ daily CH4 emissions provide useful insights to investigate mitigation strategies relying on feeding and genetic selection. Nonetheless such methods based on tracer gases (SF6) or feeding bins equipped with sniffers (e.g. GreenFeed) can hardly cover diurnal CH4 emission fluctuations which can influence the accuracy of total CH4 production estimations. Previous studies in barns showed that emission dynamics strongly vary during post feeding time, leading to a possible bias in estimates of daily CH4 emissions as high as 100%. To investigate whether such fluctuations are also taking place on pasture, a portable device was designed with infrared CH4 and CO2 sensors measuring concentrations in the exhaled air at a high sampling rate (4 Hz). Six grazing dry red-pied cows were equipped with the device and motion sensors during runs of 24h to monitor CH4 and CO2 emissions and detect their feeding behaviours (grazing, rumination and other behaviours), respectively. This experiment was performed in summer and fall in order to cover seasonal changes in pasture forage quality. Methane emission was estimated from the CH4:CO2 concentration ratio and the metabolic CO2 production of the cows. As for barn studies, variations were observed in total daily CH4 emission due to the seasons and diurnal variations were also observed due to animal behaviours. Relationships between animal feeding behaviour and CH4 emissions patterns on pasture were also unravelled. [less ▲]

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See detailComparaison de l'impact de deux méthodes d'apprentissage sur la sécurité d'administration des médicaments : stages cliniques versus simulation
Servotte, Jean-Christophe ULiege; Galerin, Catherine ULiege; Ghuysen, Alexandre ULiege et al

Conference (2017, September 12)

Introduction Drug administration is the act nurses most frequently do. However, 50% of errors occur during administration. The damage these errors causes to patients, results in excess mortality rates and ... [more ▼]

Introduction Drug administration is the act nurses most frequently do. However, 50% of errors occur during administration. The damage these errors causes to patients, results in excess mortality rates and health care costs, hence leading to a major public health problem. Therefore, it is advisable to consider the training of future nurses on the practice of this delicate act. The objective of this study is to evaluate the impact of teaching by simulation combined with the internship on the safety administration of intravenous drugs by nursing students, compared to just the internship alone. Material and method A selection of 99 students from the bachelors’ block two of the Namur-Liege-Luxembourg Higher Institute of Nursing met the inclusion criteria under consideration. They were divided into two groups, one experimental group which participated in a simulation session and a control group, the latter did not participate in the simulation session. At the start of the research, all students were assessed by an objective structured clinical examination (OSCE) with the theme of modifying infusion and syringe flow rates. They were also asked to complete a questionnaire concerning their knowledge and self-efficacy feeling related to drug administration. The experimental group then participated in the simulation sessions. The experimental group and the control group also went into four weeks of training in medical or surgical services before participating in the second stage of the study. The latter consisted of the same tests and questionnaires as stage one of the study. The evolution of the results of the two groups was first observed separately before being compared. Results The majority of the results shows that the simulation improves, in a way significantly more important than the clinical course, the acquisition of skills and knowledge, as well as the feeling of self-efficacy in drug administration. On the other hand, the assessment of the level of stress linked to drug administration and the professional attitude evaluated during the OSCE were not significantly more improved by the simulation than by the training alone (stress: p-value = 0.8269, professional attitude = 0.9857). Conclusions For the students in the experimental group, the simulation showed a positive impact on the skills, knowledge and feeling of self-efficacy associated with drug administration. Changes and continuation of the study would make it possible to go further in the generalization of results, in the evaluation of learning outcomes, and to attest to their sustainability. [less ▲]

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See detailLiDAR aérien et autres nuages de points pour la cartographie multi-échelles
Poux, Florent ULiege; Neuville, Romain ULiege; Kasprzyk, Jean-Paul ULiege et al

Conference (2017, September 12)

Utilisation de nuage de points pour la cartographie 3D multi-échelles. Exemples d'utilisation et définition de workflows pour assurer l'interopérabilité lors de la fusion de données issues de différents ... [more ▼]

Utilisation de nuage de points pour la cartographie 3D multi-échelles. Exemples d'utilisation et définition de workflows pour assurer l'interopérabilité lors de la fusion de données issues de différents capteurs. [less ▲]

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See detailInnovation et créativité : un nouvel objet d’apprentissage en formation
Hausman, Matthieu ULiege; Vincent, Coline

Conference (2017, September 12)

Comment amener les futurs-enseignants à innover pour faire face à leurs futurs défis professionnels ? Depuis deux ans, notre formation initiale propose un dispositif ayant pour visée principale de ... [more ▼]

Comment amener les futurs-enseignants à innover pour faire face à leurs futurs défis professionnels ? Depuis deux ans, notre formation initiale propose un dispositif ayant pour visée principale de stimuler la créativité des étudiants et, par extension, celle de leurs futurs élèves. Actuellement, la créativité n’apparait pas explicitement dans le référentiel de compétences des enseignants en Belgique francophone (2000). Nous y voyons néanmoins une compétence professionnelle indispensable à développer à l’heure où l’innovation est aussi au centre des préoccupations des acteurs de l’éducation. Un processus créatif est donc mené au sein d’activités visant à la fois une meilleure compréhension du concept et son appropriation en tant que démarche fonctionnelle. Les futurs-enseignants y développent des pistes d’innovations pédagogiques en référence aux étapes d’un modèle inspiré du Creative Problem Solving (Osborn et Parnes, 1926). Pour la seconde année consécutive, c’est donc la capacité à innover de nos étudiants que nous souhaitons développer. La créativité étant le moyen choisi pour y parvenir, l’hypothèse principale que nous allons vérifier suite aux ajustements qui ont suivi notre première analyse (2015-2016) est la suivante : Le dispositif permet aux étudiants de faire évoluer leurs représentations du métier en y intégrant le processus créatif comme démarche fonctionnelle. [less ▲]

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See detailManaging and authenticating non-institutional users in Alma: two experiences
Brownlie, Helen; De Groof, Robert ULiege; Renaville, François ULiege

Conference (2017, September 12)

The management of patron information within Alma is primarily reliant on two systems – the creation and updating of patron information by an external system such as student management or HR systems or ... [more ▼]

The management of patron information within Alma is primarily reliant on two systems – the creation and updating of patron information by an external system such as student management or HR systems or internally within Alma itself. A recent survey of the Alma community indicated the majority of institutions utilize a mixture of these external and internal processes. In addition to providing access to affiliated staff and students more than 89% of institutions responded that they provided user accounts to non-affiliated users such as the general public, members of other academic institutions, alumni, etc. Providing authenticated access to library services for the latter group relies heavily on Alma for password management. This presentation will outline the processes in place at the University of Otago and at the University of Liège for managing and authenticating non-institutional users and the possible effect of Ex Libris' proposed changes to internal authentication. [less ▲]

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See detailLa régulation pédagogique comme vecteur de valeurs professionnelles - Le cas d’étudiants de BAC 1, futurs enseignants
Hausman, Matthieu ULiege

Conference (2017, September 12)

En tant que jeune maître-assistant chargé de la formation pédagogique des futurs enseignants du secondaire à la Haute Ecole de la Ville de Liège (Belgique), j’accorde beaucoup d’importance à la ... [more ▼]

En tant que jeune maître-assistant chargé de la formation pédagogique des futurs enseignants du secondaire à la Haute Ecole de la Ville de Liège (Belgique), j’accorde beaucoup d’importance à la construction par les étudiants de savoirs et compétences solidement ancrés et utiles à l’exercice de leur futur métier. Il y a deux ans, ma participation au Master de spécialisation en pédagogie de l’enseignement supérieur (Formasup, Université de Liège) m’a donné l’occasion d’analyser mes pratiques d’enseignement à la lumière de mes valeurs « constructivistes ». J’ai alors pu constater que le dispositif qui vise le développement de compétences de planification pédagogique par les étudiants de BAC1 n’était pas tout à fait en phase avec ces valeurs. Ce constat m’a amené à revoir le dispositif pour davantage solliciter l’engagement et la réflexion des étudiants par rapport aux « invariants opératoires » associés à la planification. Conformément à l’approche SoTL prônée par Formasup, j’ai mené une recherche en classe afin d’étudier les effets du dispositif régulé sur la qualité d’apprentissage et la motivation de mes étudiants. Cette recherche m’a permis de confirmer que le dispositif permettait effectivement aux étudiants de s’approprier les invariants opératoires de planification et, par le processus de contextualisation – décontextualisation – recontextualisation au cœur du dispositif, d’appliquer ceux-ci à des situations de plus en plus proches du futur contexte professionnel. La recherche a montré aussi que l’approche réflexive que je souhaitais voir mes étudiants adopter n’est pas encore suffisamment soutenue par le dispositif qui doit encore être amélioré à cet égard. [less ▲]

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See detailAnalyse critique du dispositif du groupement d’employeurs en Belgique
Pichault, François ULiege

Conference (2017, September 12)

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See detailFrom seed to vegetable and from vegetable to seed : constructing a right to existence
Hecquet, Corentin ULiege

Conference (2017, September 12)

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See detailSampling only 10 μL of whole blood to study the bioavailability of itraconazole formulations in rats
Kok, Miranda ULiege; Thiry, Justine ULiege; Evrard, Brigitte ULiege et al

Conference (2017, September 12)

Background Volumetric absorptive microsampling (VAMS) offers a unique opportunity to collect small and accurate quantities of biological fluids. This sampling technique is of great interest for volume ... [more ▼]

Background Volumetric absorptive microsampling (VAMS) offers a unique opportunity to collect small and accurate quantities of biological fluids. This sampling technique is of great interest for volume-limited samples and for the collection of multiple samples from the same animal. This serial sample collection may reduce the number of required study animals, thereby fulfilling the three Rs rule (refine, reduce, replace). Here, we demonstrate the applicability of VAMS to study the bioavailability of drug formulations in rats. Methods Four itraconazole-containing formulations were successively administered to rats with a wash-out period of one week. VAMS was used to collect 14 whole blood samples of only 10 μL each within a time frame of 48 hours after administration of the different drug formulations. Particular attention was paid to sample preparation and stability. The extraction of itraconazole and its main metabolite hydroxy-itraconazole was optimized to provide a high recovery and minimal matrix effects. A developed and validated LC–MS/MS method was used for the quantification of the two compounds. Pharmacokinetic profiles for the different formulations were constructed and compared. Results The stability of itraconazole and hydroxy-itraconazole in dried VAMS samples of whole rat blood could not be guaranteed for more than a day when the samples were stored at room temperature. However, samples were stable for at least two weeks when stored at -80°C after sample preparation. Differences in pharmacokinetic profiles were observed for the tested drug formulations. Whole blood concentrations of itraconazole and its main metabolite were significantly higher after administration of three in-house produced formulations compared to concentrations obtained with a commercially available product. Moreover, these in vivo results could be partly related to in vitro dissolution rates of the various formulations. Conclusions VAMS is an attractive approach for bioavailability studies. Due to the low blood volumes per sampling point, the same rats can be used to compare various drug formulations. Therefore, the number of required animals can be drastically reduced. Moreover, this helps to suppress the inter-individual variability and strengthens the validity of results. [less ▲]

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See detailCitoyens dans un système handicapant : le cas des outsiders.
Fontaine, Sébastien ULiege

Conference (2017, September 12)

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See detailContent Working Group Report 2016-2017
Renaville, François ULiege; Varjabedian, Kathy

Conference (2017, September 11)

Report on the activities in 2016-2017 of the Content Working Group (previously Knowledge Base Advisory Board [KBAB]).

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See detailOverall borrowing and borrowing in basic vocabulary: A typological perspective on lexical change in Ancient Egyptian-Coptic
Grossman, Eitan; Polis, Stéphane ULiege

Conference (2017, September 11)

The notion of ‘basic vocabulary’ is associated with the name of Morris Swadesh, who proposed a list of 200 (and later 100) items. These lists, widely used in historical and comparative linguistics, were ... [more ▼]

The notion of ‘basic vocabulary’ is associated with the name of Morris Swadesh, who proposed a list of 200 (and later 100) items. These lists, widely used in historical and comparative linguistics, were based on intuition rather than on empirical research. More recently, however, the Leipzig Loanword Typology Project conducted a cross-linguistic survey of loanwords (Haspelmath & Tadmor 2009). One of the results is a 100-item list of basic vocabulary items — the ‘Leipzig-Jakarta list of basic vocabulary.’ This list is the product of four factors, computed for a database of 1440 meanings in 41 languages: borrowability, representation in the database, analyzability / simplicity, and age. As Tadmor (2009) states, this is the first list of basic vocabulary items based on extensive cross-linguistic comparison, and it constitutes a ‘full-fledged basic vocabulary’ that ‘comprises the notions normally associated with this concept: stability (our age score), universality (our representation score) and simplicity (our analyzability score), as well as resistance to borrowing (our unborrowed score)’ (2009: 68). In this talk, we examine this list of 100 meanings in order to evaluate the influence of Greek (Indo- European) on the basic vocabulary of Coptic (Afroasiatic), which shows massive lexical borrowing. First, Coptic data were collected from Crum (1939) for four dialects: Sahidic, Bohairic, Fayyumic, and Akhmimic. Additionally, a questionnaire was submitted to specialists in order to detect Greek loanwords that also lexicalized these meanings. Furthermore, we used etymological dictionaries (Černý 1976; Westendorf 1977; Vycichl 1983) in order to attribute an age score (from 0 = Greek loanword to 4 = Old Egyptian) to the lexemes at two levels: the formal level (when is the word first attested in Ancient Egyptian) and the semantic level (when is the meaning attested in Coptic first associated with this word). As a result of this study, we (1) evaluate the influence of Greek on the basic vocabulary of the main Coptic dialects, (2) describe the basic vocabulary of Coptic dialects independently and to observe how they differ from one another, (3) produce a first estimate of the rate of change in basic vocabularies over the course of Egyptian as a whole. Some of our main findings are as follows: 233 items lexicalize the 100 meanings. Of these, nearly half are attested already in the oldest Egyptian texts; a major peak in lexical replacement is around 1500 BCE, a time of considerable political and cultural upheaval in Egypt. Rates of lexical change do not always correspond to neat semantic categories: while body part terms were generally replaced, semantic categories like perception show heterogeneity (e.g., the verb ‘to hear’ remained throughout the entire history of Egyptian, while the verb ‘to see’ was replaced several times; similarly, ‘to come’ remained stable, while ‘to go’ was replaced several times). All in all, very few of the meanings on the Leipzig-Jakarta list are lexicalized by loanwords in Coptic, and no meanings show complete replacement of a native word by a loanword. This study has broader methodological implications. One is the clear distinction between (and possible independence of) overall lexical borrowing and borrowing of basic vocabulary: while Coptic borrowed an estimated 5000 lexical items (types), with a basic vocabulary borrowing score of 7.53, it is only a low-to-middle borrower in terms of basic vocabulary (cf. Fig. 1). The comparison of scores in overall borrowing vs. borrowing of basic vocabulary raises important questions about the types of socio-historical contact situations that lead to these different situations. [less ▲]

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See detailA tiny magic drawing board to track the penetration of magnetic flux in superconductors
Silhanek, Alejandro ULiege

Conference (2017, September 11)

Local polarization of a magnetic layer, a well-known method for storing information, has found its place in numerous applications such as the popular magnetic drawing board toy or the widespread credit ... [more ▼]

Local polarization of a magnetic layer, a well-known method for storing information, has found its place in numerous applications such as the popular magnetic drawing board toy or the widespread credit cards and computer hard drives. Here we experimentally show that a similar principle can be applied for imprinting the trajectory of quantum units of flux (vortices), travelling in a superconducting film (Nb), into a soft magnetic layer of permalloy (Py). In full analogy with the magnetic drawing board, vortices act as tiny magnetic scribers leaving a wake of polarized magnetic media in the Py board. The mutual interaction between superconducting vortices and ferromagnetic domains has been investigated by the magneto-optical imaging technique. For thick Py layers, the stripe magnetic domain pattern guides both the smooth magnetic flux penetration as well as the abrupt vortex avalanches in the Nb film. It is however in thin Py layers without stripe domains where superconducting vortices leave the clearest imprints of locally polarized magnetic moment along their paths. In all cases, we observe that the flux is delayed at the border of the magnetic layer. Our findings open the quest for optimizing magnetic recording of superconducting vortex trajectories. [less ▲]

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See detailBuckling of steel plates at elevated temperatures: Theory of perfect plates vs finite element analysis
Maraveas, Chrysanthos ULiege; Gernay, Thomas ULiege; Franssen, Jean-Marc ULiege

in Proceedings of CONFAB'17 Conference (2017, September 11)

The local buckling capacity of fire exposed thin-walled steel cross sections is affected by the reduction in strength and stiffness due to elevated temperatures and the amplitude of the initial local ... [more ▼]

The local buckling capacity of fire exposed thin-walled steel cross sections is affected by the reduction in strength and stiffness due to elevated temperatures and the amplitude of the initial local imperfections. Several researchers have proposed design methods to calculate the capacity of the plates (i.e. web and flanges) that compose these steel members at elevated temperatures, but they used different shapes of steel plates (sides ratio a/b) and different amplitudes of local imperfections. This variability in hypotheses happens because there is no clear provision defining the numerical modeling procedure for fire design of steel plates in the codes (European or US). According to the theory of perfect plates, the critical load depends of the shape of the rectangular plate (e.g. the sides ratio a/b) and the corresponding buckling mode (number of half waves), the boundary and the loading conditions. This paper reviews the existing code provisions and compares the existing design models and their assumptions for thin-walled steel cross sections. Elements of the theory of perfect plates are presented. Parametric finite element analyses are then conducted on isolated steel plates at elevated temperatures to investigate the effect of the plate shape (a/b ratio) and imperfections (amplitude and number of half wave lengths). From the analysis, the governing parameter will be estimated (a/b vs imperfections) for simulation of isolated flanges and webs. Finally, recommendations for the numerical modeling of steel plates at elevated temperatures are proposed. [less ▲]

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See detailWho are “the people” in populist rhetoric? The case of the “Front National” (FN) and the “Freiheitliche Partei Österreichs” (FPÖ)
Debras, François ULiege

Conference (2017, September 09)

In recent years, the “Front National” (FN) in France has claimed to be the “defender of the people” and “guarantor of their interests”. In 2017, the campaign slogan of Marine Le Pen, party leader and ... [more ▼]

In recent years, the “Front National” (FN) in France has claimed to be the “defender of the people” and “guarantor of their interests”. In 2017, the campaign slogan of Marine Le Pen, party leader and candidate in the presidential election, was “in the name of the people”. In Austria, the “Freiheitliche Partei Österreichs” (FPÖ) stood as the “voice of the oppressed majority”. The party is demanding “a direct democracy in order to let the people speak”. These elements lead us to question the notion of “the people”. How should we define “the people”? What reality does it refer to? What are the underlying political and ideological issues? Firstly, to answer this question, I aim to clarify the term “the people” in populist rhetoric. The FN and the FPÖ are often described as “far-right parties”. However, many scholars also refer to them as “populist parties”. These terms clearly need explaining. Secondly, this work will analyse the political discourse of the FN and the FPÖ. The focus will be on the political programmes and oral communication coming from their principal representatives. This analysis is discursive. It isn’t an examination of the work performed by party supporters or members (parliamentary work, action in local authorities, etc.). Apparently, the rhetoric from both parties is structured around two dichotomies: 1) the removal of social boundaries in favour of a people/elite opposition; 2) the affirmation of cultural boundaries in favour of an opposition between natives to a country and foreigners. I will explain why these notions of social and cultural boundaries have a prominent place in rhetoric in line with populist theory. The desire to suppress social boundaries, allows us to identity a first issue: sovereignty. The affirmation of cultural boundaries illustrates a second issue: unity. Finally, a third issue is transmitted through the notion of sovereignty and unity: identity. To conclude, I will return to the classification of the “Front National” and the “Freiheitliche Partei Österreichs” as “right-wing-populist” parties. I will end by answering the question: “who are ‘the people’”? This will explain why populist rhetoric responds to a feeling of unease within society and, more generally, within Western democracies. [less ▲]

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See detailUsing IPCAPS to identify fine-scale population structure
Chaichoompu, Kridsadakorn ULiege; Fentaw Abegaz, Yazew ULiege; Tongsima, Sissades et al

Poster (2017, September 09)

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See detailTowards a web-based platform for plotting, visualizing and enriching diachronic semantic maps: With a case study on the Greek and Egyptian temporal semantic field
Georgakopoulos, Athanasios ULiege; Polis, Stéphane ULiege

Conference (2017, September 09)

Semantic maps aim at detecting cross-linguistic regularities and recurrent patterns in semantic structure (Haspelmath 2003). This method was initially applied to the grammatical domain, mostly in a ... [more ▼]

Semantic maps aim at detecting cross-linguistic regularities and recurrent patterns in semantic structure (Haspelmath 2003). This method was initially applied to the grammatical domain, mostly in a synchronic perspective (with some exceptions, see, e.g., van der Auwera & Plungian 1998). Recent research, however, has drawn attention to the lexical domain, showing that the model can also include lexical semantics (see, e.g., François 2008). Intimately related to the semantic map method has been the issue of finding appropriate ways of creating those maps and of capturing visually the semantic regularities. Up until recently, the maps were plotted and drawn manually. However, Regier et al. (2013) showed that a good approximation algorithm exists for inferring semantic maps based on polysemy data. Elaborating on their method, this paper aims to demonstrate that information about the directionality and the weight of the edges can be automatically added, thereby providing valuable information regarding the paths of semantic extensions and their frequency. In order to illustrate the method, we take the example of the semantic extension of time-related lexemes (e.g. TIME, HOUR, SEASON, DAY) in Ancient Greek (8th – 1st c. BC) and Ancient Egyptian – Coptic (26th c. BC – 10th c. AD). Both languages give access to significant diachronic material, allowing us to trace long term processes of semantic change. The results of our diachronic investigations are then checked against databases giving information on synchronic polysemies (e.g., List et al. 2014). In doing so, we also assess the adequacy of the use of polysemy as a tool to investigate semantic change. [less ▲]

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See detailExploring insulin resistance in migraine: a population-based study
Streel, Sylvie ULiege; Donneau, Anne-Françoise ULiege; Schoenen, Jean ULiege et al

Poster (2017, September 09)

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See detailRound table. Quaternary Prevention(P4) or first do not harm.
Jamoulle, Marc ULiege; Widmer, Daniel; La Valle, Ricardo et al

Conference (2017, September 09)

Quaternary prevention (P4), born from a reflection on the doctor-patient relationship, began as an answer of family doctors facing overmedicalization. It aims to protect the patient or population against ... [more ▼]

Quaternary prevention (P4), born from a reflection on the doctor-patient relationship, began as an answer of family doctors facing overmedicalization. It aims to protect the patient or population against the danger of medicine. Harmful effects can appear with preventive activities (example: prostate cancer screening by PSA) as well as by therapeutic interventions (example: disruptive medicine). P4 promoted by the World Organization of Family Doctors (WONCA) is practiced in different ways around the world through the activity of the WONCA Special Interest Group on Quaternary Prevention and Overmedicalisation (P4&O). There are multiple initiatives and backgrounds of P4. All these multiple initiatives that lead to P4 have their origin in denouncing the inadequacies of the Hegemonic Medical Model and the excesses perpetrated in the pursuit of profit. There are many schools of thought that try to solve this situation, such as "Medicines Based on ..." These contributions are valuable but usually point to a single dimension of the problem so they do not change the situation too much. The P4, however, have understood the centrality of the political and economic dimensions and, that is why, P4 has become a movement. P4 has understood that the root causes far exceed the limits of medicine, have understood that the problem includes ethical, political, economic and epistemological aspects of medicine. It is for this reason that the definition of P4 has shifted to the function of foundational idea since the movement that has been generated around this concept has surpassed this initial definition centered in a, yet complex, but still medical vision. P4 has understood that a new model of medicine and a new pact with society is necessary. P4 is a counter-hegemonic movement with predominant development in peripheral countries. This movement includes many other perspectives developed in the central countries but is the only one that has an ideological position that discusses the current paradigm of medicine that legitimates the same causes that give rise to P4, proposing to think a new way of practice the medicine that includes Ethical values, other forms of knowledge and the return to human medicine for humans with place for uncertainty, compassion, the encounter between people and non-commodified. Justice in health care is a central aspect of this new way of conceiving the medicine that we propose. Remember what Rudolf Virchow said in the nineteenth century "Physicians are the natural advocates of the poor and social problems fall largely under their jurisdiction. Medicine is a social science, and politics is nothing more than medicine in large scale". We must reformulate our contract with society and for this we must be very clear that our loyalty must always be with the sick, the poor and those who are weak. For this new contract we must also take into account the magnitude of the power that has been given to us and to live up to such responsibility. In the Rio manifesto (2016) we propose to “Avoid and denounce the naturalization of: hunger, exclusion, manipulation, inequality, violence, racism, exploitation, which harm health more than "diseases"” . There is a better and fairer world, let's fight to get it! More about P4 on www.ph3c.org/p4 [less ▲]

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See detailInscription, iteration, transformation
De Winter, Mélanie ULiege; Slomian, Cynthia ULiege

Conference (2017, September 09)

In “Knowledge in policy”, Freeman and Sturdy propose a phenomenology with the aim of “knowing knowledge” (Freeman & Sturdy, 2014, p. 2). Knowledge can have different forms called “inscribed”, “embodied” ... [more ▼]

In “Knowledge in policy”, Freeman and Sturdy propose a phenomenology with the aim of “knowing knowledge” (Freeman & Sturdy, 2014, p. 2). Knowledge can have different forms called “inscribed”, “embodied” and “enacted”. This framework is presented as a way to categorize and describe the form, the circulation and the transformation of knowledge in policymaking. In this paper, we intend to focus on inscribed knowledge, and particularly on documents conceived as essential artefacts of public policies (Freeman & Maybin, 2011). Freeman and Sturdy defined inscribed knowledge as “written down in texts, or represented in pictures and diagrams; or it may be incorporated into instruments, tools and machines, among other things”(Freeman & Sturdy, 2014, p. 10). This form of knowledge is particularly “stable”, “easily reproducible” and “highly mobile” so “it can be communicated or made available to many different individuals separated in time and/or space”(Freeman & Sturdy, 2014, p. 10). This statement draws from works in sociology of science and technology. These works, especially Latour’s (1987) studies of the laboratory work and Law's (1986) analysis of control at distance particularly emphasize the power of inscriptions in constraining social action over time and space. Through the analysis of the implementation of two policy plans in the Belgian healthcare sector, we question and put the role of inscriptions in perspective with moments of enactment, by focusing on meetings. We intend to show that some documents are crucial at particular moments and lose value at other moments. In the same vein, we also aim to show the importance of iteration, moments, duration, and rhythms in public action. By doing so, we show how the public policy itself is transformed through time, documents and meetings. We address this issue by drawing on two PhD researches focusing on the devising and implementation of the policy plans mentioned above. By relying on interviews, observations and document analysis, we describe the policy strategies inscribed in documents as well as key moments of both documents’ trajectories. In so doing, we emphasise that documents and meetings articulate with each other in an iterative process that in turn transforms the public policies themselves. [less ▲]

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See detailA method for hybrid fire testing: Development, implementation and numerical application
Sauca, Ana ULiege; Mergny, Elke ULiege; Gernay, Thomas ULiege et al

in Gillie, Martin; Wang, Yong (Eds.) Proceedings of ASFE 2017 Conference (2017, September 08)

Hybrid Fire Testing (HFT) is a technique that allows assessing experimentally the fire performance of a structural element under real boundary conditions that capture the effect of the surrounding ... [more ▼]

Hybrid Fire Testing (HFT) is a technique that allows assessing experimentally the fire performance of a structural element under real boundary conditions that capture the effect of the surrounding structure. To enable HFT, there is a need for a method that is unconditionally stable, ensures equilibrium and compatibility at the interface and captures the global behaviour of the analysed structure. A few attempts at conducting HFT have been described in the literature, but it can be shown, based on the analytical study of a simple one degree-of-freedom elastic system, that the considered method was fundamentally unstable in certain configurations which depend on the relative stiffness between the two substructures, but which cannot be easily predicted in advance. In this paper, a new method is introduced to overcome the stability problem and it is shown through analytical developments and applicative examples that the stability of the new method does not depend on the stiffness ratio between the two substructures. The new method is applied in a virtual hybrid test on a 2D reinforced concrete beam part of a moment resisting frame, showing that stability, equilibrium and compatibility are ensured on the considered multiple degree-of-freedom system. Besides, the virtual HFT succeeds in reproducing the global behaviour of the analysed structure. The method development and implementation in a virtual (numerical) setting is described, the next step being its implementation in a real (laboratory) hybrid test. [less ▲]

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See detailThe γ Dor stars as revealed by Kepler: A key to reveal deep-layer rotation in A and F stars
Salmon, Sébastien ULiege; Ouazzani, R.-M.; Antoci, V. et al

in EPJ Web of Conferences (2017, September 08), 152

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See detailCreativity and Innovation
Artige, Lionel ULiege

Conference (2017, September 08)

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See detailComparative fire analysis of steel-concrete composite buildings designed following performance-based and U.S. prescriptive approaches
Elhami Khorasani, Negar; Fang, Chenyang; Gernay, Thomas ULiege

in Gillie, Martin; Wang, Yong (Eds.) Proceedings of ASFE 2017 Conference (2017, September 08)

Performance-based structural fire design provides a rational methodology for designing modern buildings with cost-effective solutions. However, in the United States, fire design still largely relies on ... [more ▼]

Performance-based structural fire design provides a rational methodology for designing modern buildings with cost-effective solutions. However, in the United States, fire design still largely relies on design at the component level using prescriptive approaches. With performance-based approaches, there is an opportunity to benefit from increased flexibility and reduced cost in the design, but these advantages need to be explicitly described and disseminated to promote this shift in paradigm. In this paper, a comparative analysis is conducted on multi-story steel-concrete buildings designed following performance-based and U.S. prescriptive approaches. The steel-concrete composite structure allows taking advantage of tensile membrane action in the slab during fire, and therefore removing the fire protection on secondary beam elements. The nonlinear finite element software SAFIR is used to model the behavior of the buildings under the standard ASTM fire and a natural fire determined using the two-zone fire model CFAST. The numerical simulations show that performance-based design can be used to achieve the required level of safety currently enforced in the U.S. prescriptive guidelines, while providing an opportunity for cost reduction in fire protection material. [less ▲]

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See detailEffect of upgrading concrete strength class on fire performance of reinforced concrete columns
Gernay, Thomas ULiege; Peric, Vlado; Mihaylov, Boyan ULiege et al

in Gillie, Martin; Wang, Yong (Eds.) Proceedings of ASFE 2017 Conference (2017, September 07)

High strength concrete (HSC) provides several advantages over normal strength concrete (NSC) and is being used in multi-story buildings for reducing the dimensions of the columns sections and increasing ... [more ▼]

High strength concrete (HSC) provides several advantages over normal strength concrete (NSC) and is being used in multi-story buildings for reducing the dimensions of the columns sections and increasing the net marketable area. However, upgrading of concrete strength class in a building may affect the fire performance, due to higher rates of strength loss with temperature and higher susceptibility to spalling of HSC compared with NSC. Reduction of columns sections also leads to increased member slenderness and faster temperature increase in the section core. These detrimental effects are well known, but their impact on fire performance of structures has not been established in terms of comparative advantage between NSC and HSC. In other words, it is not clear whether the consideration of fire resistance limits the opportunities for use of HSC for reducing the dimensions of columns sections in multi-story buildings. This research aims to address this question by comparing the fire behaviour of reinforced concrete columns made of NSC and HSC using nonlinear finite element modelling. The evolution of load bearing capacity of the columns is established as a function of the fire exposure duration. A 15-story car park structure is adopted as a case study with alternative designs for the columns based on strength classes ranging from C30 to C90. Results show that, although the replacement of NSC by HSC accelerates the reduction rate of columns capacity under fire, the columns generally have significant reserves in resistance leading to sufficient fire resistance. This study gives an insight into the impact of replacing stocky sections in NSC by more slender sections in HSC on fire resistance rating for multi-story structures. [less ▲]

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See detailSensitivity of elevated temperature load carrying capacity of thin-walled steel members to local imperfections
Maraveas, Chrysanthos ULiege; Gernay, Thomas ULiege; Franssen, Jean-Marc ULiege

in Gillie, Martin; Wang, Yong (Eds.) Proceedings of ASFE 2017 Conference (2017, September 07)

The local buckling capacity of fire exposed thin-walled steel cross sections is affected by the reduction in strength and stiffness due to elevated temperatures and by the amplitude of the initial local ... [more ▼]

The local buckling capacity of fire exposed thin-walled steel cross sections is affected by the reduction in strength and stiffness due to elevated temperatures and by the amplitude of the initial local imperfections. Several researchers have proposed design methods to calculate the capacity of these steel members at elevated temperatures, but they used different methodologies and different amplitude of local imperfections in the extensive numerical analyses that are typically at the base of these methods. This variability in hypotheses happens because there is no clear provision defining the local imperfection amplitude for fire design in the codes (European or US). EN 1993-1-5 proposes amplitude values of local imperfections for ambient temperature design, while EN 1090-2 defines a -different- maximum allowed size of fabrication tolerance during production. Meanwhile, other sizes of local imperfections have also been proposed in the literature, with values different than those from EN 1993-1-5 and EN 1090-2. This paper reviews the existing code provisions and compares the existing design models and their assumptions for thin-walled steel cross sections. Finite element analyses are then conducted on isolated steel plates at elevated temperatures to investigate the effect of local imperfections. Finally, specific amplitude of local imperfections is proposed for fire design of thin-walled steel members. [less ▲]

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See detailAdvanced oxidative treatment for waste water contamined by pharmaceutical products
Belet, Artium ULiege; Vreuls, Christelle; Gillard, Nathalie et al

Poster (2017, September 07)

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See detailOptimization of hydroxyapatite synthesis via sol-gel process for bone reconstruction application
Tilkin, Rémi ULiege; Regibeau, Nicolas ULiege; Grandfils, Christian ULiege et al

Poster (2017, September 07)

During the past few years, tissue engineering has become one of the most promising techniques to maintain, improve, or reconstruct human tissue, even complete human organs. This solution is frequently ... [more ▼]

During the past few years, tissue engineering has become one of the most promising techniques to maintain, improve, or reconstruct human tissue, even complete human organs. This solution is frequently based on the realization of temporary porous matrices, also called "scaffolds". Scaffolds are highly porous matrices notably designed to structure the development of cells, but also to guarantee the function of the implant during the regeneration process. Several materials have been proposed for the conception of scaffold. These have to meet strict criteria regarding biocompatibility, degradability, mechanical and surface properties. As a result of their biomimetism, bioceramics, like hydroxyapatite (Ca5(PO4)3(OH)), have been widely developed during the past few years for bone reconstruction. The aim of this study is the optimization of the synthesis of hydroxyapatite by sol-gel process to be used in the conception of scaffold for bone reconstruction application. In this optic, powder obtained from two synthesis processes (wet precipitation and sol-gel process) were compared with commercial hydroxyapatite. For wet precipitation process, calcium nitrate and phosphoric acid were used as reagent. For sol-gel process, calcium acetate was used as the source of calcium and triethylphosphate as the source of phosphate. Reagents were mixed and the solution was aged. The powder was then dried and sintered. Finally, particles were washed in HCl to remove CaO and then dried. Those new materials were characterized, particularly in terms of chemical composition (XRD, FTIR), crystallinity (XRD), morphology (SEM, TEM), size (TEM, DLS) and Ca/P ratio (EDX). [less ▲]

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See detailValidation of a TEOS based sol-gel coating for the protection of carbon fibres against oxidation regarding their use in metal matrix composites
Montrieux, Henri-Michel ULiege; Lecomte-Beckers, Jacqueline ULiege; Halleux, Jacques et al

Poster (2017, September 07)

The use of sol-gel coating on graphite substrates has sucessfuly been done. In particular, in the field of metal matrix composites, some authors state that the use and cure of TEOS sol-gel on carbon based ... [more ▼]

The use of sol-gel coating on graphite substrates has sucessfuly been done. In particular, in the field of metal matrix composites, some authors state that the use and cure of TEOS sol-gel on carbon based fibres may improve the liquid magnesium infiltration. The described mechanism is the lowering of the liquid/solid contact angle under some specific conditions of time and temperature by the occurrence of a metal-oxide exothermal chemical reaction. Furthermore the application of silica based sol-gels on carbon fibres in order to control the medium to high temperature oxidation of fibres preforms is less investigated. The primary objective is to understand more deeply the oxidation of some uncoated fibres by the comparison of ESEM observations to TGA/ATD curves. The secondary objective is to formulate and coat a TEOS based sol-gel on T300 carbon fibres and to evaluate the new oxidation behaviour. The ternary objective is to measure in a simple way the gain of oxidation resistance of some coated fibres. [less ▲]

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See detailLaterality patterns for Gestalts of language
Dumitru, Magdalena ULiege; Van Calster, Laurens ULiege; Bouffier, Marion ULiege et al

Poster (2017, September 07)

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See detailCatalytic reforming of biomass gasification tars with bimetallic catalysts
Wolfs, Cédric ULiege; Claude, Vincent; Lambert, Stéphanie ULiege

Poster (2017, September 07)

The thermochemical method called “biomass gasification” is generating emphatic interest for the production of bio-Syngas (CO+H2) since this process presents the advantage of being renewable without ... [more ▼]

The thermochemical method called “biomass gasification” is generating emphatic interest for the production of bio-Syngas (CO+H2) since this process presents the advantage of being renewable without emitting CO2. However, in practical applications, there are still some technical problems due to high concentration of tars in the outlet gas, which can condensate and clog the pipes. Previous studies have highlighted the fact that the tar elimination via catalytic reforming seem to be the more practical and economical solution. Reforming catalysts present the following properties : a tailored mesoporous texture for the support and the high dispersion of active sites like metallic nanoparticles (Ni, Pd, Fe,…) [1]. In this work, Ni based alumina catalysts and doped with a second metal (Co, Cu, Fe, Mn, Mo) are synthesized by an aqueous sol-gel process. [less ▲]

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See detailProtein-polysaccharide complexes, a tool for protein delivery in CaCO3 microparticles
Ramalapa, Bathabile ULiege; Crasson, Oscar ULiege; Vandevenne, Marylène ULiege et al

Poster (2017, September 06)

INTRODUCTION The controlled delivery of proteins within calcium carbonate (CaCO3) particles is currently widely investigated. The success of these carriers has been driven by the ionic interactions ... [more ▼]

INTRODUCTION The controlled delivery of proteins within calcium carbonate (CaCO3) particles is currently widely investigated. The success of these carriers has been driven by the ionic interactions between proteins and particles making the encapsulation of proteins highly dependent on the pH of reaction solutions and the isoelectric point of the protein.1 This poses a great limitation on the successful loading of proteins into microparticles. In this study, we explored the use of polysaccharide-protein interactions to strongly enhance the encapsulation of proteins in CaCO3 microparticles. EXPERIMENTAL METHODS Previously, Vandevenne and colleagues2 inserted a human chitin binding domain (ChBD) that has intrinsic affinity for hyaluronic acid (HA) into β-lactamase (BlaP). This generated chimeric protein, named BlaPChBD, was shown to be fully bifunctional. In this study this hybrid protein (BlapChBD) was associated to HA and successfully loaded into CaCO3 microparticles using super critical CO2 technology aided by the templating effect of HA on CaCO3. Furthermore, thrombin cleavage sites were engineered on both sides of the inserted ChBD in the chimeric BlaP so that release of the protein from the microparticles could be easily achieved by protease cleavage. The microparticles were characterised for size, surface charge, poly-morphism and protein loading and in-vitro release assays were performed. RESULTS AND DISCUSSION The presence of ChBD inserted into the β-lactamase increased the encapsulation of the protein by 6-fold when complexed with HA (Fig. 1). In addition, we also showed that the encapsulated BlaP remains stable during this process using kinetic reaction of β-lactam hydrolysis. Our data showed that vaterite CaCO3 microparticles of sizes ranging between 4 and 7 µm were produced. We were also able to demonstrate that thrombin cleavage increased the release of the protein from the microparticles within 36 hours from <25% to 87% (Fig. 2). In conclusion, the presence of ChBD successfully improved the encapsulation yield of the protein while retaining up to 81% of its activity. CONCLUSION Protein-polysaccharide complexation demonstrates an excellent approach for the delivery of sensitive biomacromolecules which can otherwise be complicated due to electrostatic hindrances. Future prospects include using the methods we have developed for encapsulation of therapeutic proteins and using calcium carbonate as a carrier and scaffold in bone regeneration for example. [less ▲]

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See detailUsing Geophysical Hard Data to Enhance the Reliability of Hydrological Models
De Schepper, Guillaume; Paulus, Claire; Molron, J. et al

in EarthDoc (2017, September 06)

Appropriate design of geophysical experiments combined with common hydrological measurements offer opportunities to use geophysical data as hard data in hydrological models, regarding their ... [more ▼]

Appropriate design of geophysical experiments combined with common hydrological measurements offer opportunities to use geophysical data as hard data in hydrological models, regarding their conceptualisation or their calibration. Two study sites located in Wallonia, Belgium, were investigated. In the first case (fractured limestone aquifer), streaming potentials were linked to piezometric measurements, allowing us to better conceptualise the local groundwater flow model and calibrate it. In the second example (alluvial sandy aquifer), the use of 4D electrical resistivity tomography and temperature measurements appeared to be a reliable methodology to predict heat storage and recovery cycles in hydrological models with a better constrained calibration process. [less ▲]

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See detailQuantification of Temperature with Time-lapse electrical resistivity using the prediction-focused approach-A field case
Hermans, Thomas ULiege; Nguyen, Frédéric ULiege; Caers, Jef

in EarthDoc (2017, September 06)

Standard inversion of time-lapse geophysical suffers from spatially and temporally varying resolution due to the regularization procedure used during the inversion process. In this study, we apply the ... [more ▼]

Standard inversion of time-lapse geophysical suffers from spatially and temporally varying resolution due to the regularization procedure used during the inversion process. In this study, we apply the recently developed prediction-focused approach (PFA) to directly estimate temperature with electrical resistance data, without classic tomographic inversions. PFA is based on a set of prior subsurface models coherent with our prior knowledge of the site. From this set of models, we generate a prior set of temperature distribution and resistance data mimicking the field experiment. Then, we use dimension-reduction techniques to derive a direct relationship between the data and the desired prediction. The use of canonical correlation analysis linearize the relationship and allows using Gaussian regression to sample the posterior. In this paper, we demonstrate the ability of PFA to process time-lapse ERT data during a field experiment. We propose an analysis of time-lapse reciprocals to derive an error model and generate the posterior distribution of temperature. We validate the results using direct measurements in the aquifer. This successful application opens new ways to process and integrate geophysical data in hydrogeological model. [less ▲]

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See detailOptimization and machine learning for smart-microgrids
Cornélusse, Bertrand ULiege

Conference (2017, September 06)

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See detailGoing Inside Structural and Physicochemical Properties of Polymers using Ion Mobility-Mass Spectrometry
Haler, Jean ULiege; de la Rosa, Victor R.; Far, Johann ULiege et al

Conference (2017, September 06)

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See detailEnvironmental impact of food waste treatment in an EcoCleaner, a portable accelerated composter
Groslambert, Sylvie ULiege; Léonard, Angélique ULiege; Finet, Sébastien

Poster (2017, September 06)

Canteen and catering food wastes represent a challenge in waste management since they contain a large part of water and can be subject to biological processes during the waste management chain, especially ... [more ▼]

Canteen and catering food wastes represent a challenge in waste management since they contain a large part of water and can be subject to biological processes during the waste management chain, especially during storage. Different solutions exist to manage this organic waste, for instance local and centralized composting, anaerobic digestion, or co-incineration with municipal waste. Except for local composting, theses methods need to collect and transport food waste to be processed, which mean transporting a lot of water. The Life Cycle in Practice (LCiP) (LIFE12 ENV/FR/001113) project helps SMEs to reduce the environmental impacts of their products and services across the entire life cycle. Within the frame of this project, the environmental impact of the Eco-Cleaner system is evaluated with the standardized life cycle assessment (LCA) methodology. Eco-Cleaner (EC) is a stand alone accelerated system that can transform food waste in valuable compost in only 24 hours. It is designed by Biowaste Recycling (http://biowasterecycling.com/). It can be declined in different capacities, from family size (about 1-2 kg/days of food waste) to large communities of 1300 place settings (up to 700 kg/days). EC technology is based on a permanent control of the ratio of humidity and temperature to optimize fermentation rate of food waste by a special consortium of more than thirty thermophilic bacteria. Waste reduction is about 90% and compost is sanitized to ensure the destruction of active parasites, insect eggs and germs. EC compost is dry (80-90% siccity level), and it has a quite high nitrogen content (about 3-4% on dry matter) and is rich in organic matter. Thanks to an activated carbon filter (replaced every two years), it is odourless and has no noxious gas emission. Since it's dry, this compost can be stored without further degradation, and its transport has a reduced environmental cost. The functional unit is the composting of one ton of food waste. The inventory includes the machine itself, its use, its refitting every twelve years, and its end of life. Refurbishing includes mainly the replacement of the motor, the heating resistance, the plastic parts, the seals, and only 5% of metals. Avoided chemical fertilizers consecutive to compost application are considered as system expansion, and it induces negative impact values in all categories. Electricity for use is the main impacting element in all categories (BE mix) but this impact can be reduced by the use of on-site photovoltaic panels. Abiotic depletion is highly impacted due to the metals the EC is made of (92% of total weight, principally steel), but a large improvement is achieved by the quadruplicating of the life span because of refurbishing, and the recycling of metals at the end of life. Specific process data are processed in SimaPro 8.1 software, using Ecoinvent 3.1 database for additional generic data, and analysed with the CML IA 3.03 method. [less ▲]

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See detailSpatio-temporal Monitoring of Heat Storage in a Shallow Aquifer Using Electrical Resistivity 4D Imagery and DTS
Lesparre, Nolwenn ULiege; Hermans, Thomas ULiege; Nguyen, Frédéric ULiege et al

in EarthDoc (2017, September 06)

The design of groundwater heat pumps requires a good understanding of the aquifer and heat flow conditions. Issues of short-circuit or recycling between cold and hot wells have to be carefully considered ... [more ▼]

The design of groundwater heat pumps requires a good understanding of the aquifer and heat flow conditions. Issues of short-circuit or recycling between cold and hot wells have to be carefully considered. Surface geophysical methods allow monitoring subsurface processes without additional perturbations of the medium. Within available methods, the electrical resistivity imagery (ERI) applied in time-lapse (TL) is appropriate. Here, we monitored with ERI and distributed temperature sensors (DTS) a heat plume propagation during an experiment of hot water injection in a shallow aquifer. DTS and TL ERI measurements acquired from two boreholes provide a local estimate of the heat propagation through the medium. TL ERI were also performed from a grid at surface to follow the 3D plume shape formation and evolution through time. The different complementary data validate the potential of surface TL ERI for monitoring in 3D the behavior of shallow heat plumes. ERI highlight the heterogeneity of the aquifer by distinguishing regions with higher or lower hydraulic conductivity. In the higher hydraulic conductivity zone, the heat might be evacuated through water flow, while in the lower hydraulic conductivity area heat storage is achievable. Thus, in that last region the plume temperature decreases progressively with time. [less ▲]

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See detailOrdovician to Early Devonian miospores from South America: a state of the art - review
Rubinstein, C.V.; Garcia Muro, V.J.; Gerrienne, Philippe ULiege et al

Conference (2017, September 05)

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See detailComparison of the electrochemical performance of Li4Ti5O12 spinel as negative electrodes for lithium-ion batteries prepared by sol gel and spray drying methods
Mahmoud, Abdelfattah ULiege; Piffet, Caroline ULiege; Berardo, Loris ULiege et al

Poster (2017, September 05)

Energy is considered as the lifeblood of modern society. Rechargeable batteries are the most promising to meet the human needs concerning the energy storage thanks their high energy density and high ... [more ▼]

Energy is considered as the lifeblood of modern society. Rechargeable batteries are the most promising to meet the human needs concerning the energy storage thanks their high energy density and high energy efficiency. Most difficult challenges of the development of promising rechargeable batteries concern the electrode materials. Li4Ti5O12 (LTO) is one the most promising anode materials for Li-ion batteries, as it demonstrates very stable cycling stability and excellent safety. Its high operating potential (~1.5 V) allows to avoid the formation of SEI during the first cycle. The three-dimensional structure offers LTO excellent reversibility due to the near zero volume strain during the Li+ ion intercalation and deintercalation cycling. The main objective of this study on LTO samples was to evidence the effect of synthesis method and thermal conditions on their structural, morphological and electrochemical properties [1, 2]. The results demonstrate the strong influence of the synthesis route (Sol-Gel and spray-drying methods) and the thermal treatment on the capacity, cyclability and rate capability of the LTO spinel in Li-half-cell and Li-ion full-cell (see Figure 1). References [1] A. Mahmoud, J. M. Amarilla, K. Lasri, I. Saadoune, Electrochim. Acta 93 (2013) 163-172. [2] A. Mahmoud, J. M. Amarilla, I. Saadoune, Electrochim. Acta 163 (2015) 213-222. [less ▲]

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See detailSpatial hybridization and its implications on housing in Brussels and Amsterdam
Uyttebrouck, Constance ULiege; Teller, Jacques ULiege

Conference (2017, September 04)

This paper aims to address the effects of labour market mutations on housing through an analysis of “spatial hybridization”, focusing on the qualitative comparison of Brussels and Amsterdam. The objective ... [more ▼]

This paper aims to address the effects of labour market mutations on housing through an analysis of “spatial hybridization”, focusing on the qualitative comparison of Brussels and Amsterdam. The objective is to provide first elements of context, methodology and results of a wider on-going research. In the first section, we highlight underlying trends, in particular the emergence of NWoW in a context of new economy, and current issues on the housing market (flexibilisation, commodification, gentrification). Then, we discuss the relevance of applying path dependence in our research, before presenting our two case-study cities from a historical perspective and pointing out innovative practices and the current public discourse. Finally, we discuss differences and similarities through four elements of comparison: functional mix at the block level, service-oriented housing, economic and housing paths. The discussion is based on our literature review, early policy analysis and interviews with key-stakeholders. [less ▲]

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See detailRegulation of mitochondrial respiration by modulating calcium fluxes in the green algae Chlamydomonas reinhardtii
Fattore, Nicolo; Remacle, Claire ULiege; Morosinotto, Tomas et al

Poster (2017, September 04)

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See detailSurface solar radiation modelling over 1900-2014: comparison between the regional climate model MAR and reanalyses
Wyard, Coraline ULiege; Doutreloup, Sébastien ULiege; Belleflamme, Alexandre ULiege et al

Poster (2017, September 04)

Many studies show that the surface solar radiation has underwent large variations over the second half of the 20th century as a result of variations in cloud cover and aerosol loading in the atmosphere ... [more ▼]

Many studies show that the surface solar radiation has underwent large variations over the second half of the 20th century as a result of variations in cloud cover and aerosol loading in the atmosphere. However, it is difficult to build strong conclusions before the 1950s because of the observations scarcity. The evolution of the surface solar radiation has been reconstructed over 1900-2014 using the regional model MAR (« Modèle Atmosphérique Régional ») which has recently been chosen to be part of the EURO-CORDEX project, thanks to the CORDEX.be project. Simulations were performed at a horizontal resolution of 5 km over a domain of 600 x 550 km² covering Belgium. Boundary conditions were provided by four reanalysis products: ERA-interim (1979-2014) completed by the ERA40 (1958-1978), NCEP/NCAR-v1 (1948-2014), ERA-20C (1900-2010) and 20CRV2C (1900-2010). Surface solar radiation measurements from the Global Energy Balance Archive and cloud cover observations from Belgocontrol covering 1966-2007 were used for the evaluation of the MAR model and the forcing reanalyses. Results show that MAR produces much better results than the reanalyses. The driving reanalyses can generate divergent trends while they assimilate observations and are supposed to represent the same climate. [less ▲]

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See detailLCM of construction waste towards circular economy of buildings: VALDEM project
Roy, Aubin; Groslambert, Sylvie ULiege; Pasquet, Vanessa et al

Poster (2017, September 04)

From resource prospective, building and construction sector is responsible for more than third of global resource consumption, including 12% of the fresh water use and its generation of solid waste is ... [more ▼]

From resource prospective, building and construction sector is responsible for more than third of global resource consumption, including 12% of the fresh water use and its generation of solid waste is estimated to be 40% of the total waste volume. At European level, construction and demolition waste is the largest waste stream representing one third of all waste produced in EU. Therefore the resource efficiency and management is crucial in building construction. A very significant part of the Construction and Demolition Waste (CDW) is not recycled today. Also a very limited part is used as a recycled content in the construction and building products and materials. This lack is mainly due to heterogeneity and dispersion of waste flows decreasing efficiency and economic viability of recycling. To address this issue, VALDEM project (funded by Interreg FWVL European Fund) aims to overcome barriers to increase up-cycling applications. The project focuses its activities in North of France, Flanders and Walloon regions (Belgium), and stands out from usual approaches by its cross-border view of circular economy. VALDEM aims, on one hand, to optimize buildings end of life management by developing new deconstruction, sorting and recycling processes to produce uniform and accessible material flows. On the other hand, the project aims at increasing recycling and generating high quality secondary materials (concrete and other flows) to be used in future buildings within an up-cycling prospective. And finally it aims at validating the solutions from technical, scientific, economic and environmental point of view. The Environmental assessment, based on LCA, consists of identifying hotspots and key aspects to prioritize the efforts of different economic actors. As a first step, an LCA meta-analysis is conducted to provide an environmental picture for different potential activities within the scope of the project. As a next step, a comparative LCA is conducted to assess the environmental benefits and impacts of different solutions proposed in the framework of the project in a decision making context, and to limit the impact transfer and to generate the maximum value for all the stakeholders. Finally, results will be transferred to main actors (recycling operators, buildings contractors, product manufacturers …) in the three regions in order to consolidate future key aspects to eco-design a building in light of circular economy. [less ▲]

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See detailElectrochemical Mechanism of TiMnSn4 as Anode Material for Li-ion Batteries
Lippens, Pierre-Emmanuel; Jumas, Jean-claude; Olivier-Fourcade, Josette et al

Conference (2017, September 04)

Li-ion batteries are widely used in portable electronic devices, electric vehicles or energy storage systems for intermittent energy sources, due to their high energy density, light weight and long cycle ... [more ▼]

Li-ion batteries are widely used in portable electronic devices, electric vehicles or energy storage systems for intermittent energy sources, due to their high energy density, light weight and long cycle life. However, the performances must be continuously improved, which requires the development of new electrode materials. Carbon is commercially used for the anode but its specific capacity is limited to 372 mAh g-1 due to the electrochemical insertion mechanism involving only 1 Li per 6 C. In order to increase the specific capacity, Sn was considered as electrochemically active element although it is about ten times heavier than C. This is due to the alloying/dealloying mechanism with up to 4.4 Li per Sn, providing a theoretical capacity of 992 mAh g-1. However, the Sn ↔ Li4.4Sn reversible transformations are associated with large volume variations responsible for capacity fading.Tin intermetallic compounds of the form MSnx, where M is a transition metal, were proposed to overcome this problem. The first lithiation transforms the pristine material into Li7Sn2/M nanocomposites where the M nanoparticles are expected to buffer the volume variations [1]. However, the delithiation process is more complex involving a possible back reaction of M with Sn, which could play a crucial role in the cycling stability. Such reaction was observed for Ni3Sn4 [2] and MnSn2 [3] but not for FeSn2 [4]. In addition, TiSnx intermetallics show very poor electrochemical activity [5]. The present work concerns the tin based ternary phase TiMnSn4 as new anode material for Li-ion batteries. This compound is of particular interest because it contains two different transition metals that are expected to react differently with Sn during delithiation, if we consider the previous results obtained for MnSnx and TiSnx. TiMnSn4 was obtained by mechanosynthesis to optimize the microstructure and characterized by different experimental tools and DFT (density functional theory) calculations. We propose an analysis of the reaction mechanism based on operando X-ray diffraction and 119Sn Mössbauer spectroscopy combined with a DFT interpretation of the electrochemical potential curve. References 1) M. Chamas, M.T. Sougrati, C. Reibel, P.E. Lippens, Chem. Mater. 25, 2410 (2013). 2) K.K.D. Ehinon, S. Naille, R. Dedryvère, P.E. Lippens, J.C. Jumas, D. Gonbeau, Chem. Mater. 20, 5388 (2008). 3) A. Mahmoud, M. Chamas, J.C. Jumas, B. Philippe, R. Dedryvère, D. Gonbeau, I. Saadoune, P.E. Lippens, J. Power Sources 244, 246 (2013). 4) M. Chamas, P.E. Lippens, J.C. Jumas, K. Boukerma, R. Dedryvère, D. Gonbeau, J. Hassoun, S. Panero, B. Scrosati, J. Power Sources 196, 7011 (2011). 5) A. Ladam, L. Aldon, P.E. Lippens, J. Olivier-Fourcade, J.C. Jumas, C. Cenac-Morthe, Hyperfine Interact. 237, 51 (2016). [less ▲]

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See detailIntrasite spatial analysis based in a Geographic Information System and apply to extensive Middle Palaeolithic open-air sites in northern France. The example of Caours (Somme, France).
Moreau, Gwénaëlle ULiege; Locht, Jean-Luc; Auguste, Patrick

Conference (2017, September 02)

During middle Palaeolithic, northern France was occupied only by Neanderthals groups. However, the succession of glacial and interglacial periods explain a complex and discontinuous settlement, which ... [more ▼]

During middle Palaeolithic, northern France was occupied only by Neanderthals groups. However, the succession of glacial and interglacial periods explain a complex and discontinuous settlement, which involved complication in the study of the population dynamics at regional scale. Thereby, some aspects of Neanderthals behaviour are still obscure: in many cases, the sites function have to be precise. The intrasite spatial analysis will help us to answer those questions through the description of human activity areas and their interactions. However, for Middle Palaeolithic sites, we can’t see systematically on the field the spatial organisation directly, we sometimes need modelization. Therefore, we started to build a spatial analysis protocol based on a Geographic Information System and rely on sites of Caours and Beauvais (France). They are two open air sites that are exceptionally well preserved and displaying a large amount of faunal and lithic rests. Our protocol’s aim is showing the existence of a spatial organisation in form of artefacts concentration area. We first hypothesize with mesh analysis – or density, widely used in archaeology. Nevertheless, this method is limited by subjective choices like that of the mesh analysis. For that reason, we decided to use another methodology based on artefacts density but also on the distance between each other: The Kernel Density Estimation. Then, we will specified the function of this areas in a life space and their interactions through the spatial distribution of different lithic artefacts and faunal remains. [less ▲]

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See detailMunicipalities’ understanding and importance of the concept of Smart Cities: an exploratory analysis in Belgium
Desdemoustier, Jonathan ULiege; Crutzen, Nathalie ULiege; Giffinger, Rudolf

Conference (2017, September 01)

Even if an increasing number of scientific publications are dealing with it, the concept of “smart city” is not yet well defined and it is not fully understood (Anthopoulos and Vakali 2012; Caragliu,Bo ... [more ▼]

Even if an increasing number of scientific publications are dealing with it, the concept of “smart city” is not yet well defined and it is not fully understood (Anthopoulos and Vakali 2012; Caragliu,Bo, and Nijkamp 2009; Lazaroiu and Roscia 2012). Due to the lack of a proper conceptualization, defined method or credentials for smart cities (Angelidou 2015; Nam and Pardo 2011), cities across the geographical spectrum claim themselves 'smart' with self-congratulatory note (Hollands 2008). Despite this increasing popularity of smart cities, there are few critical discourse and rigorous analytical or statistical analyses of the concept and its application on urban territories (Caragliu, Bo, and Nijkamp 2009; R G Hollands 2015; Kitchin 2015; Vanolo 2014). This paper aims at understanding where Belgian municipalities stand in the field of smart city in 2016. How Belgian municipalities approach the phenomenon smart city? Which focus in smart city -sustainable, technologic, creative and human-do attract Belgian municipalities? The paper answers to these questions thanks to a comprehensive territorial analysis of the country, a presentation of current trends on smart cities in the three Belgian regions, and the construction of a typology of municipalities’ understandings of the phenomenon. It also analyses how these understandings impact priorities and smart city developments of Belgian municipalities. It investigates how they affect municipal priorities in the six dimensions of the smart city and their state of development in some key smart city fields. Finally, it examines how do this typology is related to the municipal perception of difficulty to set up smart city projects and the relevance of the concept for their territories. The data used comes from the results of a quantitative research amongst Belgian municipalities carried out in 2016 by the Smart City Institute. The research points out key statistical observations around the smart city phenomenon in Belgium. A typology with four different understandings (technological, holistic, specialized and inexistent) emerged from the analyses. [less ▲]

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See detailJuno-UVS and Chandra Observations of Jupiter's Polar Auroral Emissions
Gladstone, G. R.; Kammer, J. A.; Versteeg, M. H. et al

Conference (2017, September 01)

New results are presented comparing Jupiter's auroras at far-ultraviolet and x-ray wavelengths, using data acquired by Juno-UVS and Chandra. The highly variable polar auroras (which are located within the ... [more ▼]

New results are presented comparing Jupiter's auroras at far-ultraviolet and x-ray wavelengths, using data acquired by Juno-UVS and Chandra. The highly variable polar auroras (which are located within the main auroral oval) track each other quite well in brightness at these two wavelengths. [less ▲]

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See detailJovian aurora from Juno perijove passes: comparison of ultraviolet and infrared images
Gérard, Jean-Claude ULiege; Bonfond, Bertrand ULiege; Adriani, A. et al

Conference (2017, September 01)

The electromagnetic radiation emitted by the Jovian aurora extends from the X-Rays presumably caused by heavy ion precipitation and electron bremsstrahlung to thermal infrared radiation resulting from ... [more ▼]

The electromagnetic radiation emitted by the Jovian aurora extends from the X-Rays presumably caused by heavy ion precipitation and electron bremsstrahlung to thermal infrared radiation resulting from enhanced heating by high-energy charged particles. Many observations have been made since the 1990s with the Hubble Space Telescope, which was able to image the H2 Lyman and Werner bands that are directly excited by collisions of auroral electrons with H2. Ground-based telescopes obtained spectra and images of the thermal H3+ emission produced by charge transfer between H2+ and H+ ions and neutral H2 molecules in the lower thermosphere. However, so far the geometry of the observations limited the coverage from Earth orbit and only one case of simultaneous UV and infrared emissions has been described in the literature. The Juno mission provides the unique advantage to observe both Jovian hemispheres simultaneously in the two wavelength regions simultaneously and offers a more global coverage with unprecedented spatial resolution. This was the case. [less ▲]

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See detailMAVEN IUVS Observations of the Aftermath of the Comet Siding Spring Meteor Shower on Mars
Schneider, N. M.; Crismani, M.; Deighan, J. I. et al

Conference (2017, September 01)

A comet's close passage by Mars deposited an unprecedented amount of vaporized dust whose elements were detected by the MAVEN spacecraft.

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See detailUnveiling Mars nightside mesosphere dynamics by IUVS/MAVEN global images of NO nightglow
Stiepen, Arnaud ULiege; Jain, S. K.; Schneider, N. M. et al

Conference (2017, September 01)

We analyze the morphology of the ultraviolet nightglow in the Martian upper atmosphere through Nitric Oxide (NO) δ and γ bands emissions observed by the Imaging Ultraviolet Spectrograph instrument on the ... [more ▼]

We analyze the morphology of the ultraviolet nightglow in the Martian upper atmosphere through Nitric Oxide (NO) δ and γ bands emissions observed by the Imaging Ultraviolet Spectrograph instrument on the Mars Atmosphere and Volatile EvolutioN spacecraft. The seasonal dynamics of the Martian thermosphere-mesosphere can be constrained based on the distribution of these emissions. We show evidence for local (emission streaks and splotches) and global (longitudinal and seasonal) variability in brightness of the emission and provide quantitative comparisons to GCM simulations. [less ▲]

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See detailA bottom-up approach to the analysis of deliberate metaphors in Belgian political discourse
Heyvaert, Pauline ULiege

Conference (2017, September 01)

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See detailRelationships between methane emissions and technico-economic data from commercial dairy herds
Delhez, Pauline ULiege; Wyzen, Benoit; Dalcq, Anne-Catherine ULiege et al

Conference (2017, September 01)

Considering economic and environmental issues is important for the sustainability of dairy farms. Regarding environment, direct methane (CH4) emissions from cows are of increasing concern. Many studies ... [more ▼]

Considering economic and environmental issues is important for the sustainability of dairy farms. Regarding environment, direct methane (CH4) emissions from cows are of increasing concern. Many studies examined CH4 variation factors but often on a low number of experimental cows. Also, few studies linked CH4 to economic aspects of dairy farms. The innovative aim of this study was to highlight technical factors associated with dairy cow CH4 emissions and gain insight into the relationships between CH4 and herd economic results by the use of large scale and on-farm data. A total of 525,697 individual CH4 predictions from milk mid-infrared (MIR) spectra [MIR-CH4 (g/day)] of milk samples collected on 206 farms during the Walloon milk recording were used to create a CH4 proxy at the herd by year (herd*year) level. This proxy was merged with accounting data. This allowed a simultaneous study of CH4 emissions and 56 technico-economic variables for 1,024 herd*year records from 2007 to 2014. Significant effects were detected from ANOVA analyses and correlations (r). MIR-CH4 was weakly linked to technical variables considered individually (r < 0.38), suggesting complex associations between variables. Lower MIR-CH4 was associated with lower fat and protein corrected milk (FPCM) yield (r=0.18), lower milk fat and protein content (r=0.38 and 0.33, respectively), lower quantity of milk produced from forages (r=0.12) and suboptimal reproduction and health performances (e.g. higher calving interval (r=-0.21), higher culling rate (r=-0.15)). On an economic point of view, lower MIR-CH4 was associated with lower gross margin per cow (r=0.19) and per litre FPCM (r=0.09). To conclude, this study suggested that low dairy cow CH4 emissions tended to be associated with suboptimal and also less profitable herd management practices. Further research is needed to confirm and expand on these results. [less ▲]

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See detailA First Look at the Prevalence and Persistence of Middleboxes in the Wild
Edeline, Korian ULiege; Donnet, Benoît ULiege

in International Teletraffic Congress (2017, September)

Recent years have seen an uprise in the development of middleboxes functionalities (CGNATs, proxies, accelerators, etc), participating so in the ossification of the Internet. In parallel, various ... [more ▼]

Recent years have seen an uprise in the development of middleboxes functionalities (CGNATs, proxies, accelerators, etc), participating so in the ossification of the Internet. In parallel, various solutions have been developed to detect or circumvent unwanted middleboxes interferences such as UDP-based middlebox-proof transports (Google's QUIC, PLUS), middlebox-proof extensions to TCP (HICCUPS, TCPcrypt), and middlebox traversal mechanisms (STUN, ICE, PLUS). All those solutions make the assumption of ubiquitous middleboxes. However, a view of their actual deployment in the wild, in IPv4 wired networks, is missing. In particular, knowing how autonomous systems (ASes) deploy middleboxes in terms of prevalence and persistence would provide additional relevant information to Internet topology models. In this paper, we aim at filling this gap. Based on a large-scale measurement campaign, we highlight different characteristics of middlebox deployment within ASes to elicit middleboxes profiles. [less ▲]

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See detailSemantic Background Subtraction
Braham, Marc ULiege; Pierard, Sébastien ULiege; Van Droogenbroeck, Marc ULiege

in IEEE International Conference on Image Processing (ICIP), Beijing 17-20 September 2017 (2017, September)

We introduce the notion of semantic background subtraction, a novel framework for motion detection in video sequences. The key innovation consists to leverage object-level semantics to address the variety ... [more ▼]

We introduce the notion of semantic background subtraction, a novel framework for motion detection in video sequences. The key innovation consists to leverage object-level semantics to address the variety of challenging scenarios for background subtraction. Our framework combines the information of a semantic segmentation algorithm, expressed by a probability for each pixel, with the output of any background subtraction algorithm to reduce false positive detections produced by illumination changes, dynamic backgrounds, strong shadows, and ghosts. In addition, it maintains a fully semantic background model to improve the detection of camouflaged foreground objects. Experiments led on the CDNet dataset show that we managed to improve, significantly, almost all background subtraction algorithms of the CDNet leaderboard, and reduce the mean overall error rate of all the 34 algorithms (resp. of the best 5 algorithms) by roughly 50% (resp. 20%). Note that a C++ implementation of the framework is available at http://www.telecom.ulg.ac.be/semantic. [less ▲]

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See detailAn active bacterial community linked to high chl-a concentrations in Antarctic winter-pack ice and evidence for the development of an anaerobic sea-ice bacterial community
Eronen-Rasimus; Luhtanen, A.-M.; Rintala, J.-M. et al

Poster (2017, September)

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See detailDEVELOPMENT OF AN ELECTRONIC EDUCATION BOOKLET FOR PATIENTS WITH LOW BACK PAIN
Demoulin, Christophe ULiege; Pauly, Laura; Grosdent, Stéphanie ULiege et al

Conference (2017, September)

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See detailPREVALENCE OF CERVICAL DYSFUNCTION IN PATIENTS WITH EPICONDYLALGIA: A PRELIMINARY STUDY
Colman, David ULiege; Demoulin, Christophe ULiege; Neumann, Valentin et al

Conference (2017, September)

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See detailUp-scalable spray-drying synthesis of Na2Ti3O7
Piffet, Caroline ULiege; Vertruyen, Bénédicte ULiege; Mahmoud, Abdelfattah ULiege et al

Poster (2017, September)

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See detailATTITUDES AND BELIEFS CONCERNING LOW BACK PAIN AMONG PHYSIOTHERAPY STUDENTS IN BELGIUM AND THE NETHERLANDS: A CROSS-SECTIONAL STUDY
Leysen, Marijke; Nijs, Jo; Van Wilgen, C.P. et al

Conference (2017, September)

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See detailA Techno-Functional Study of the Aterian Technocomplex at Ifri n'Ammar
Tomasso, Sonja ULiege; Rots, Veerle ULiege

Poster (2017, September)

The tanged tools of the Aterian technocomplex have generally formed the central point in debates on early indications of hafting (Clark, 1970). However, in order to obtain a true understanding of the ... [more ▼]

The tanged tools of the Aterian technocomplex have generally formed the central point in debates on early indications of hafting (Clark, 1970). However, in order to obtain a true understanding of the specificity of this technocomplex, it is essential to study entire assemblages and understand the characteristics of and the relation between the tanged and non-tanged tool component, both on a technological and on a functional level. Until today no functional studies were yet undertaken on complete Aterian tool assemblages. We present the results of the technological and use-wear analysis of the non-tanged tool component of the Aterian assemblage of Ifri n’Ammar (Morocco) and focus on aspects of tool use and hafting. The rock shelter of Ifri n’Ammar, located in the eastern Moroccan Rif, is known for its rich stratified lithic assemblages, dating to 83 ± 6 ka to 130 ± 8 ka for the upper levels and to 145 ± 9 to 171 ± 12 ka for the lower levels (Richter et al., 2010). In the framework of the recently published dating results of other maghrebian sites (Dörschner et al., 2016), Ifri n’Ammar takes an important position within discussions on the chronological attribution of the Aterian: a large time span extended from MIS 6 to MIS 3 [3]. The sequence has provided a large diversity of tool morphologies which offer the possibility to contribute to the discussion about use and hafting of tanged and non-tanged tools. Aside from the tanged tools and foliates, the material from comparable Aterian assemblages can be defined by the presence of side scrapers, end-scrapers, denticulates, such as blades, bladelets or Levallois cores (Bouzouggar and Barton, 2012). Despite the frequent presence of post-depositional surface alterations, reliable functional interpretations could be identified on a large number of tools. Previous studies had already confirmed that the tanged tools were used while hafted for hunting and animal processing activities (Tomasso and Rots, 2017). Also a variety of tasks and gestures could be identified on the non-tanged tools based on a combination of diagnostic macro- and microscopic wear traces. Interestingly, also the non-tanged tool component shows evidence of hafting, indicating the existence of a variety in hafting techniques. The integration of the functional results on the non-tanged and tanged tool component allows addressing questions on tool variability, diversity in tool morphology and site function. We argue that the results highlight the importance of the site for improving our understanding of the North African MSA. [less ▲]

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See detailLes modes d'acquisition et de transmission du savoir médical dans l'antiquité gréco-romaine
Marganne, Marie-Hélène ULiege

in Histoire des Sciences Médicales (2017, September), 51(2), 163-173

This paper aims to define and describe the ways of acquiring and transmitting medical knowledge in Greco-Roman Antiquity through an analysis of literary, archaeological, and, primarily, papyrological ... [more ▼]

This paper aims to define and describe the ways of acquiring and transmitting medical knowledge in Greco-Roman Antiquity through an analysis of literary, archaeological, and, primarily, papyrological sources. The methods and practices revealed by these sources include experiment, analogy, and imitation, oral and written teaching, the composition and copying of books (illustrated or not), as well as the elaboration of commentaries, abridgments, questionnaires, and word lists. These modes of knowledge transfer were intended not only for medical practitioners and students, but also for philiatroi, for generally educated people, as well as for scribes, and eventually tachygraphers, of medical books. [less ▲]

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See detailReliability of a standardized protocol for bedside quadriceps strength measurement in critically ill patients
ROUSSEAU, Anne-Françoise ULiege; Freycenon, Gaëlle ULiege; KELLENS, Isabelle ULiege et al

in Intensive Care Medicine Experimental (2017, September), 5(S2), 327

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See detailIL-4Ra-dependent macrophage responses in the liver during murine schistosomiasis
Rolot, Marion ULiege; Dougall, Annette; Gillet, Laurent et al

Poster (2017, September)

During Schistosoma mansoni infection in mice, IL-4 receptor-dependent alternatively activated macrophages (aaMφ) response mediate host protection. Here, we used LysMcreIl4ra−/lox mice to determine whether ... [more ▼]

During Schistosoma mansoni infection in mice, IL-4 receptor-dependent alternatively activated macrophages (aaMφ) response mediate host protection. Here, we used LysMcreIl4ra−/lox mice to determine whether the absence of Mφ-specific IL-4 receptor signalling modifies the dynamics of Mφ responses in liver granulomas after S. mansoni infection. Liver inflammatory response was investigated after low-dose S. mansoni infection. We observed significantly increased total leukocyte numbers in the liver by week 8 in LysMcreIl4ra−/lox mice while mice survived the infection similarly to littermate controls. Over the course of infection, we observed that CD11blowMerTK+CD64+ resident Küpffer cells (KCs) were severely reducing in term of numbers independently of IL-4Rα signalling. While KCs lowered, Ly6Chi monocytes were recruited in the liver from 6 weeks pi, proliferate strongly at week 8 and acquire CD64 expression. The number of Ly6Chi recruited monocytes were significantly higher in LysMcreIl4ra−/lox mice than littermate controls. From 8 weeks pi, CD11blow KCs seemed to be replaced by CD11bhighMerTK+CD64+F4/80+ Mφ, probably derived from recruited Ly6Chi monocytes. At week 8 pi, expression of Ym1 and Relm-alpha was significantly reduced in hepatic CD11bhigh Mφ of LysMcreIl4ra−/lox mice compared to littermate controls. These results suggest that recruited monocytes differentiate into Mφ at the cost of resident KCs independently of IL-4Rα and validate the use of LysMcreIl4ra−/lox mice to study IL-4Rα-dependent activation of monocyte-derived granuloma Mφ during schistosomiasis. [less ▲]

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See detailBio-chemical Raman imaging using targeted-SERS
Verdin, Alexandre ULiege; Malherbe, Cédric ULiege; Eppe, Gauthier ULiege et al

Poster (2017, September)

Raman and SERS spectral imaging, which consists in reconstructing a Raman intensity profile over a 2D or 3D section of a given sample (in presence or not of a nanosubstrate), allow to visualise the ... [more ▼]

Raman and SERS spectral imaging, which consists in reconstructing a Raman intensity profile over a 2D or 3D section of a given sample (in presence or not of a nanosubstrate), allow to visualise the variation of the chemical composition associated with the micro-structure of the sample. In particular, targeted-SERS imaging also enables the specific imaging of various macromolecules targeted by SERS probes in complex biological samples such as cancerous cells. To illustrate the versatility of Raman imaging, we describe two applications that were investigated recently in our laboratory. First, 3D Raman imaging was used to investigate a microcavity in a matrix of gypsum, revealing fossilised carbonaceous compounds dispersed in a filamentous shape, highly suggesting the presence of fossilised bacteria. Secondly, SERS probes were synthesised to specifically target the FRα receptor of folic acid which are often over-expressed at the surface of cancerous cells. Confocal Raman imaging was used to study the localization of the probes after incubation with KB cells (oral cancer) to confirm the specific targeting of FRα membrane receptors (Fig. 1). Moreover, our SERS probes allowed us to distinguish two different cancerous cell lines (namely KB and PC-3), based on the degree of expression of the FRα receptor of these two lines (high for KB and low for PC-3). In the future, these SERS probes may be used for distinguishing between cancerous and healthy cells since healthy cells have a lower degree of expression of FRα. [less ▲]

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See detailExploring the effect of a second closely-timed PRP infiltration for tendinopathy
Kaux, Jean-François ULiege; Forthomme, Bénédicte ULiege; Le Goff, Caroline ULiege et al

in European Journal of Sports Medicine (2017, September), 5(Supplement 1), 20-21

INTRODUCTION: Although PRP is very popular in sport, especially since it was removed from the doping list, it remains controversed in literature (3). Up to now, there exists no general agreement on the ... [more ▼]

INTRODUCTION: Although PRP is very popular in sport, especially since it was removed from the doping list, it remains controversed in literature (3). Up to now, there exists no general agreement on the preparation and the use of PRP. Some clinical series have previously evaluated the effect of PRP in the treatment of proximal patellar tendinopathies. Although it is possible that a single infiltrative administration may prove to be an effective treatment for this indication, most of the existing studies evaluated the effects of two or three successive infiltrations. The multiplication of infiltrations is arguably likely to increase the risks of complications, and this treatment can be expensive. PURPOSE: We aimed to evaluate whether two infiltrations of PRP prove more effective than a single treatment. METHODS: Our study is a single blinded, randomized controlled clinical trial on leisure sportsmen with chronic proximal patellar tendinopathies, rebel to classical management, including physiotherapy, shock wave therapy… Twenty patients suffering from proximal patellar tendinopathies for over than 3 months were enrolled into the study. PRP was obtained using an aphaeresis machine (1). The subjects were split into two randomized groups and beneficed of 1 or 2 infiltrations of pure PRP, respectively. The one-year followup evaluation consisted of VAS, IKDC and VISAP scores, while algometer, isokinetic and ultrasounds evaluations were carried out up to 3 months. RESULTS: The concentration of the PRP used for each infiltration was similar in both groups (913.20 ± 65.60 × 103/ L for group 1 and 917.90 ± 63.08for group 2, with virtually no red (<0.001 × 106/ L) nor white cells (<0.001 × 103/ L) in either group). The VAS significantly decreased with time over the 3 month followup period (p = 0002), with no difference observed between the two groups (p = 0.2). Values obtained with the pressure algometer increased with time across both groups over the 3 month followup period (p < 0.0001), and values were significantly higher for Group 1 (p = 0.001). The IKDC score increased with time in both groups over the followup period (p = 0.034), with values again significantly higher for Group 1 (p = 0.0026). The VISAP score increased with time in both groups over the followup period (p = 0.0023), with no difference observed between the groups (p = 0.41). No improvements in isokinetic physical performance were observed in either group. However, pain during E30 significantly decreased over the 3 month followup period (p = 0.027) for patients in both groups. No improvement in either jumping performances or in pain was observed in either group during optojump evaluation. No improvements in US findings were observed. However, an increase of the sagittal hypoechoic area was observed in Group1 (p = 0.0038). After one year, 90% patients of group 1 did not report anymore pain during daily activities, in comparison with only 20% in group 2. In group 1, 20% of subjects still described pain during work activities and 40% during practicing sports versus 40% and 70%, respectively, in group 2. One patient in each group did not return to sport; both subjects still experienced pain through daily and occupational work activities. Six subjects among the group 1 (67%) and 7 among the group 2 (78%) returned to their former sport, and 55% of both groups to the former level than before the tendinopathy. However, 44% of the group 1 and 78% of the group 2 still experienced pain during sports activities. The practiced sports were football, handball, cycling, running, fitness.On the other hand, patients with only few months of symptoms did not evolved more favorably than those with symptoms for longer. CONCLUSIONS: The comparison between 1 or 2 infiltrations of PRP did not reveal any difference between the 2 groups after a followup period of 3 months. A second closely timed infiltration of PRP to treat proximal patellar tendinopathies is not necessary to improve the efficacy of this treatment in the short term (2). However, there remains a need to evaluate the longer term results. REFERENCES: Kaux JF, Croisier JL, Bruyere O, Rodriguez De La Cruz C, Forthomme B, Brabant G, Lapraille S, Lonneux V, Noel D, Le Goff C, Gothot A, Collette J, Crielaard JM. One injection of plateletrich plasma associated to a submaximal eccentric protocol to treat chronic jumper's knee. J Sports Med Phys Fitness. 2015 Sep;55(9):95361 Kaux JF, Croisier JL, Forthomme B, Le Goff C, Buhler F, Savanier B, Delcour S, Gothot A, Crielaard JM. Using plateletrich plasma to treat jumper's knees: Exploring the effect of a second closelytimed infiltration. J Sci Med Sport. 2016 Mar;19(3):2004. Kaux JF, Drion P, Croisier JL, Crielaard JM. Tendinopathies and plateletrich plasma (PRP): from preclinical experiments to therapeutic use. J Stem Cells Regen Med. 2015 May 30;11(1):717. A10 [less ▲]

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See detailLexical Diachronic Semantic Maps
Georgakopoulos, Athanasios ULiege; Polis, Stéphane ULiege

Poster (2017, September)

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See detailNightside temperature measurements at 95 km from OH nightglow in the Venus atmosphere
Migliorini, A.; Snels, M.; Gérard, Jean-Claude ULiege et al

Poster (2017, September)

Temperature estimations at an altitude of about 95 km on the night side of Venus are provided. They are derived from hydroxyl nightglow emissions, observed in the infrared spectral range at 2.7-3.5 micron ... [more ▼]

Temperature estimations at an altitude of about 95 km on the night side of Venus are provided. They are derived from hydroxyl nightglow emissions, observed in the infrared spectral range at 2.7-3.5 micron, using the Visible and Infrared Thermal Imaging Spectrometer on board Venus Express. [less ▲]

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See detailValidity and reliability of the French translation of the VISA-A questionnaire
Bruyère, Olivier ULiege; Kaux, Jean-François ULiege; Croisier, Jean-Louis ULiege

in European Journal of Sports Medicine (2017, September), 5(Supplement 1), 64

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