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See detailRecollection versus familiarity in normal aging and in mild cognitive impairment: Impact of test format
Simon, Jessica ULg; Gilsoul, Jessica ULg; SALMON, Eric ULg et al

Poster (2017, March 24)

If familiarity is better preserved than recollection in aging and in the early stage of Alzheimer's disease (Koen & Yonelinas, 2014), the experimental conditions promoting its use should be beneficial to ... [more ▼]

If familiarity is better preserved than recollection in aging and in the early stage of Alzheimer's disease (Koen & Yonelinas, 2014), the experimental conditions promoting its use should be beneficial to these populations. One condition influencing the relative contribution of recollection and familiarity during recognition is the format of the test. The aim of this study was to investigate the impact of test format on recollection and familiarity in normal aging and in MCI in two tasks where the level of performance is equalized. Seventy young participants, 70 younger-old (55-69 years old), 69 older-old (70-85 years old), and 13 MCIs were presented with forced-choice and yes/no visual recognition memory tasks with the Remember/Know/ Guess paradigm. Young participants had better recognition memory performance than younger-old, who performed better than older-old and MCIs. Recollection and familiarity declined progressively in healthy aging. In MCI, recollection was more affected than familiarity, but patients demonstrated a more liberal use of familiarity. Finally, test format did not influence strongly the results. Young people used recollection more often in the forced-choice task compared to the yes/no task. [less ▲]

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See detailRecognition memory is associated with hippocampal volume in aging population: new evidence from brain imaging study
Narbutas, Justinas ULg; Blanpain, Manon ULg; Van Egroo, Maxime ULg et al

Poster (2017, March 23)

Introduction. The hippocampus is crucial for episodic memory, especially for recollection and pattern separation (i.e., the ability to store similar episodes as distinct memory traces). Episodic memory ... [more ▼]

Introduction. The hippocampus is crucial for episodic memory, especially for recollection and pattern separation (i.e., the ability to store similar episodes as distinct memory traces). Episodic memory declines with aging and this has been associated with hippocampal dysfunction. The main objective of our study was to explore how performance on a recognition memory task designed to assess pattern separation is associated with hippocampal volume in aging population. Methods. Fourteen healthy late middle-aged participants (52-69 years-old) were evaluated on a Mnemonic Similarity Task (MST). In this task, participants study pictures and then have to discriminate between targets, similar lures, and unrelated foil objects. Recognition memory (RM) is assessed as the difference between hits and false alarms to unrelated foils, while pattern separation Bias metric (BPS) is the difference between the rate of ‘‘Similar’’ responses given to the lure items minus ‘‘Similar’’ responses given to the foils. Hippocampal volume was calculated using ASHS software, which uses T1-weighted and T2-weighted MRI to obtain optimal segmentation of hippocampal subfields. Results. Correlation analysis of preliminary data revealed that RM was significantly positively associated with the volume of the left subiculum and left perirhinal area 35, while there were no significant correlations in the right hemisphere. BPS was positively correlated with the volume of right CA2 region, but negatively associated with the volume of right CA3 region, what is more contradictory according to the current literature. No significant link was found between BPS and the volume of hippocampal subfields in the left hemisphere. Conclusion. In a middle-aged population, better visual recognition memory is associated with larger volume of the left subiculum and perirhinal area 35, two regions supporting representation of objects [less ▲]

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See detailRelating pessimistic memory predictions to Alzheimer’s disease brain structure
Genon, Sarah ULg; Simon, Jessica ULg; Bahri, Mohamed Ali ULg et al

Poster (2017, March 23)

Patients with Alzheimer’s disease (AD) show impairment of episodic memory and related metacognitive processes. The present study examined subjective metacognitive judgments preceding objective memory ... [more ▼]

Patients with Alzheimer’s disease (AD) show impairment of episodic memory and related metacognitive processes. The present study examined subjective metacognitive judgments preceding objective memory retrieval and investigated the neural correlates of pessimistic predictions for successfully retrieved memories in AD patients. AD patients and healthy older participants provided predictive judgements on their recognition performance before retrieval of famous (semantic) and recently learned (episodic) names. Correlations between grey matter volume (GMV) in T1 images and behavioural scores were examined with multivariate (PLS) and univariate (GLM) analyses in AD patients. AD patients showed a significant proportion of successful name recognition preceded by pessimistic prediction (Prediction_low_hits) in episodic memory. PLS revealed that behavioural pattern in AD patients was related with a mainly right lateralized pattern of GMV decrease including medial temporal lobe and posterior cingulate cortex, but also right ventrolateral prefrontal cortex (VLPFC). GLM further confirmed that pessimistic prediction negatively correlated with GMV in VLPFC. Thus, impaired monitoring processes (possibly influenced by inaccurate beliefs) allowing inferences about one’s own memory performance are primarily related to decrease GMV in VLPFC in AD patients. [less ▲]

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See detailAmok. De quelques perdants radicaux chez Hans Magnus Enzensberger.
Hamers, Jérémy ULg; Cormann, Grégory ULg

Conference (2017, March 23)

En 2006, l’écrivain et essayiste allemand Hans Magnus Enzensberger publie Le perdant radical, un « essai sur les hommes de la terreur », conformément au sous-titre de cet ouvrage d’une soixantaine de ... [more ▼]

En 2006, l’écrivain et essayiste allemand Hans Magnus Enzensberger publie Le perdant radical, un « essai sur les hommes de la terreur », conformément au sous-titre de cet ouvrage d’une soixantaine de pages dans lequel l’auteur décrit les multiples facettes d’un ensemble de figures meurtrières. Du tireur fou dans un lycée américain au combattant islamiste ceinturé d’explosifs, isolé ou organisé en groupe, tout perdant radical répond au même mécanisme : c’est « lorsqu’il aura repris à son compte le jugement des autres, ceux qu’il tient pour les gagnants (…) qu’il pète les plombs. » L’indistinction est frappante : pour Enzensberger, le perdant radical peut sévir seul ou en groupe ; son moteur profond, irréductible à un engagement politique ou religieux, reste le même dans les deux cas. Car pour l’essayiste, rien, pas même une théorie critique de la société, ne permet de rendre compte de la nature du perdant radical, si ce n’est la suppression de l’instinct de conservation. Dans plusieurs textes littéraires – on songe notamment à son poème Zur Frage der Bedürfnisse (1991) et à son entretien autobiographique fictif avec lui-même Erinnerungen an einen Tumult (2014) –, Hans Magnus Enzensberger crée ou recrée des figures de terroristes qui réalisent parfaitement le profil type du perdant radical. Andreas Baader, les jeunes bourgeois d’une secte marxiste en Suède, un terroriste islamiste en fuite, un guérillero sud-américain qui a perdu tout sens de la réalité, autant de figures fictionnelles ou refictionnalisées qui, partant d’une même position d’échec apparemment imposée de l’extérieur et assumée en tant que telle, superposent destruction et autodestruction. L’hypothèse générale à laquelle nous voudrions soumettre ces personnages de terroristes est qu’ils sont les héritiers d’une figure essentielle pour la littérature allemande et anglo-saxonne : l’amok. [less ▲]

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See detailImpact of the number of alternatives during a forced-choice recognition task on recollection and familiarity in normal aging
Simon, Jessica ULg; Gilsoul, Jessica ULg; Bastin, Christine ULg

Poster (2017, March 23)

Forced-choice recognition tasks are often used to evaluate recognition memory. However, no study have specifically investigate the impact of the number of alternatives on memory performance. Here, we ... [more ▼]

Forced-choice recognition tasks are often used to evaluate recognition memory. However, no study have specifically investigate the impact of the number of alternatives on memory performance. Here, we wanted to determine, on the one hand, if the number of alternatives - two or three - and on the other hand if the degree of similarity between targets and foils have an impact on recognition strategies. Moreover, we investigated how aging interacted with these variables. We recruited 20 young and 20 older participants. During the reconnaissance task, they had to choose, among two or three photographs of faces, the one that was presented previously. Some couples of targets and foils were more similar than others (sharing 60% of common characteristics versus 40%). For each selected item, the participants had to explain what guided their choice via verbal reports. We observed similar performance between the groups for the two-alternative recognition memory task, while young participants had better performance than the older participants in the three-alternative task. Young participants used more often recollection when the similarity between targets and foils was higher, unlike older participants whose rate of recollection was not influenced by target-foil similarity. Both groups used more often familiarity in the two-alternative task, but older participants demonstrated a more liberal bias. Finally, our participants used more often elimination strategies when the similarity is low or when they had to select one item out of three. [less ▲]

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See detailOils and CO2, a promising combination for designing insulating foams and high performance coatings
Detrembleur, Christophe ULg; Alves, Margot ULg; Grignard, Bruno ULg et al

Conference (2017, March 21)

Making plastics more sustainable by valorizing waste CO2 as a cheap, inexhaustible and renewable feedstock is an early stage technology with strong innovation potential that imposes itself as a strategic ... [more ▼]

Making plastics more sustainable by valorizing waste CO2 as a cheap, inexhaustible and renewable feedstock is an early stage technology with strong innovation potential that imposes itself as a strategic driver for developing future low carbon footprint materials and technologies. With a global production estimated to 18 million tons for 2016, polyurethane (PU) is one of the most important polymers in our everyday life applications (automotive, building and construction, coatings, etc.). Industrially, PU is produced by step-growth polymerization between di- or polyisocyanates and di- or polyols. However, isocyanates are toxic and drastic changes in the REACH regulations limiting/banning the use of isocyanates are expected. There is a need today to develop new greener and safer alternatives to produce PU. Valorizing CO2 as C1 feedstock for producing precursors entering in the synthesis of polyurethanes by a non-isocyanate route (NIPU) is a promising strategy to solve this challenge. In this talk, we will focus on the synthesis and characterization of novel NIPUs foams for thermal insulation, and NIPUs coatings for metal protection. Our research highlights benefit of merging bio-resources (such as vegetable oils) with carbon dioxide transformation. In the first part of this talk, we will report on the fast synthesis of bio- and CO2-sourced cyclic carbonates by coupling CO2 with epoxides using a new highly efficient bicomponent homogeneous organocatalyst under solvent-free and mild experimental conditions. The mechanism of the activation of the reaction will be discussed, and scaling up of the technology will be demonstrated (15kg scale). In the second part, we will illustrate the use of these bio- and CO2-sourced cyclic carbonates for the production of microcellular NIPU foams with closed cells morphology for thermal insulating applications, but also for preparing hybrid NIPUs coatings for metal protection. [less ▲]

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See detailThe Belgian election system
Bouhon, Frédéric ULg

Conference (2017, March 21)

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See detailSynergistic observations of the giant planets with HST and JWST: Jupiter's auroral emissions
Grodent, Denis ULg

Conference (2017, March 20)

The James Webb Space Telescope is perfectly suited to observe most Solar System objects, including the extended giant planets. Its high sensitivity, high spatial resolution, field of view, very high ... [more ▼]

The James Webb Space Telescope is perfectly suited to observe most Solar System objects, including the extended giant planets. Its high sensitivity, high spatial resolution, field of view, very high spectral resolution and wide spectral coverage all combine to make JWST a fantastic instrument that will result in significant advances and progress in most fields of Solar System exploration. Here, we focus on the case of Jupiter’s aurora for several reasons. 1) The auroral emissions on Jupiter are very intense, both in ultraviolet and in infrared. Each of these bandpasses is bringing complementary information on how Jupiter is interacting with its near and distant environment. 2) Even though Jupiter’s aurora appears to be responding to the conditions prevailing in the solar wind, contrary to the Earth it is a permanent emission that can also be observed on the sunlit side of the planet. 3) The NASA Juno mission is currently exploring the magnetosphere and the atmosphere of this planet with a suite of in situ and remote instruments, including an ultraviolet spectrograph (UVS) and an infrared imaging spectrograph (JIRAM). The Juno mission is gathering a broad scientific community that will foster the study of Jupiter’s system for several years. 4) A large HST program was allocated in support of the NASA Juno prime mission (GO-14634) and is currently providing us with regular movies of Jupiter’s ultraviolet aurora. They provide a global magnetospheric context for the different Juno instruments, as well as for the numerous ground based (infrared) and space based observatories participating to the Juno mission. 5) It is currently very difficult to plan truly simultaneous UV and IR observations, mainly because of the inherent limitations of Earth based infrared telescopes. As a result, comparisons of Jupiter’s auroral emissions rest on a very limited dataset. Nevertheless, they are suggesting similarities and discrepancies between IR and UV aurorae, the study of which would greatly benefit from synergistic observations with HST and JWST. 6) The case of Saturn’s aurora is as important, especially in view of the upcoming ‘Grand Finale’ of the Cassini mission, and all above arguments apply to Saturn as well. The case of Uranus and Neptune’s aurorae still belongs to the area of discovery and will take full advantage of JWST’s advanced capabilities. [less ▲]

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See detailCatalytic functionalisation of starch and amylose using plant oils: towards polymeric materials and composites
Scholten, Philip ULg; Söyler, Zafer; Detrembleur, Christophe ULg et al

Poster (2017, March 19)

Fossil fuels have been the main source of starting materials for the chemical industry over the last century. Especially synthetic polymers rely on this feedstock and are indispensible for mankind’s ... [more ▼]

Fossil fuels have been the main source of starting materials for the chemical industry over the last century. Especially synthetic polymers rely on this feedstock and are indispensible for mankind’s technological advances and status quo. However, a shift to renewable and sustainable resources is needed, as the end of the fossil fuel era is in sight. Biomass presents one possible alternative to fossil fuels, as it consists of a large pool of different chemicals and is inexhaustible. Cellulose, and the closely related starch and amylose, are available cheaply from plants and have favourable properties, such as high strength, thermal stability and biodegradability. However, such poly(saccharides) have been difficult to use directly as materials because of the lack of thermoplasticity, low solubility and high hydrophilicity. Modifications are thus necessary to be able to exploit their advantageous properties. Recently, our group published the catalytic transesterification of maize starch with different plant oils to obtain fully renewable fatty acid starch esters in a sustainable fashion. Polymeric materials with glass transition temperatures (Tgs), soluble in common organic solvents and an increased hydrophobicity were obtained. Compatibilisation tests of the modified starch and amylose with low-density poly(ethylene) (LDPE) and cellulose are being investigated to obtain composites of commodity plastics with improved mechanical properties. [less ▲]

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See detailLichtenstein procedure under local anaesthesia
DETRY, Olivier ULg

Conference (2017, March 18)

LICHTENSTEIN REPAIR UNDER LOCAL ANAESTHESIA Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, CHU Liège, Liège, Belgium. Email: oli.detry@chu.ulg.ac.be Despite many studies confirming the ... [more ▼]

LICHTENSTEIN REPAIR UNDER LOCAL ANAESTHESIA Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, CHU Liège, Liège, Belgium. Email: oli.detry@chu.ulg.ac.be Despite many studies confirming the feasibility and the interest of local anaesthesia for inguinal hernia repair [1-3], its use is not generalized amongst abdominal surgeons. The advantages of local anaesthesia are indeed clear, including reduced costs, reduced hospital stay and reduced post operative pain. The success of the procedure depends on the skills and the motivation of the surgeon, of the nursing teams, and of the patient him/herself. Perfect knowledge of the surgical technique and of the regional nerve anatomy is required. The Lichtenstein repair may be easily performed under local anaesthesia, but should be proposed in the early experience to non-obese patients suffering from limited inguinal hernia. It can even be performed by surgical residents [4]. Practically, local anaesthesia requires some patience and quiet in the operative room. Operators should be aware that the action of local anaesthesia is delayed after injection. Local anaesthetics should be buffered [5] and at body temperature at time of injection. Local anaesthetics containing Adrenalin allow longer pain control, with limitation of bleeding and less toxicity. Large and brutal movements should be avoided. Transversus abdominis plane (TAP) block can also be proposed [6]. The surgical and anaesthetic techniques for inguinal hernia repair should be tailored to the specific characteristics of the hernia and of the patient. There is no method of choice that might fit for every patient. References [1] van Veen RN, Mahabier C, Dawson I, Hop WC, Kok NF, Lange JF, et al. Spinal or local anesthesia in lichtenstein hernia repair: a randomized controlled trial. Ann Surg 2008;247:428-433. [2] Verstraete L, Becaus N, Swannet H, Ceelen W, Duchateau L, Speybroeck N. Long term outcome after lichtenstein hernia repair using general, locoregional or local anaesthesia. Acta Chir Belg 2015;115:136-141. [3] Dhankhar DS, Sharma N, Mishra T, Kaur N, Singh S, Gupta S. Totally extraperitoneal repair under general anesthesia versus Lichtenstein repair under local anesthesia for unilateral inguinal hernia: a prospective randomized controlled trial. Surg Endosc 2014;28:996-1002. [4] Paajanen H, Varjo R. Ten-year audit of Lichtenstein hernioplasty under local anaesthesia performed by surgical residents. BMC Surg 2010;10:24. [5] Ball EL, Sanjay P, Woodward A. Comparison of buffered and unbuffered local anaesthesia for inguinal hernia repair: a prospective study. Hernia : the journal of hernias and abdominal wall surgery 2006;10:175-178. [6] Milone M, Di Minno MN, Musella M, Maietta P, Salvatore G, Iacovazzo C, et al. Outpatient inguinal hernia repair under local anaesthesia: feasibility and efficacy of ultrasound-guided transversus abdominis plane block. Hernia : the journal of hernias and abdominal wall surgery 2013;17:749-755. [less ▲]

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See detailApprentissage et mémoire chez l'enfant et l'adulte trisomique 21
Comblain, Annick ULg

Conference (2017, March 17)

Si le profil langagier des personnes trisomiques 21 est de mieux en mieux connu et décrit, certains aspects du développement et du fonctionnement cognitif des personnes atteintes demeurent encore peu ... [more ▼]

Si le profil langagier des personnes trisomiques 21 est de mieux en mieux connu et décrit, certains aspects du développement et du fonctionnement cognitif des personnes atteintes demeurent encore peu étudiés. Ainsi, les conséquences de la présence d’un chromosome surnuméraire dans leur patrimoine génétique, sur des domaines tels que le développement mnésique, les apprentissages académiques (lecture et arithmétique) ou la problématique du vieillissement cognitif restent peu étudiés et encore sujets à controverse. Même si depuis plusieurs décennies, on sait que la mémoire à court terme verbale des personnes trisomiques 21 est déficitaire, son fonctionnement exact et les conséquences de ce déficit sur le développement d’autres domaines comme le langage oral et la lecture restent relativement peu explorés en regard des nombreuses études descriptives sur les déficits observés dans la maîtrise langage oral. A l'heure ou l'inclusion des personnes atteintes d'une déficience intellectuelle devient une pratique de plus en plus courante et recommandée, il semble essentiel d'approfondir notre connaissance du développement cognitif de ces personnes de manière à mettre en place des moyens adaptés au sein des classes et de potentialiser apprentissages. Par ailleurs, la problématique du vieillissement et plus particulièrement de l’incidence de la maladie d’Alzheimer est devenue, de par l’espérance de vie accrue des personnes trisomiques 21, un sujet de recherche de plus en plus développé. [less ▲]

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See detailL’animation à l’épreuve de la danse : Norman McLaren ou la conquête du chorégraphique
Tomasovic, Dick ULg

Conference (2017, March 17)

Figuremajeure du cinéma d’animation artisanal et expérimental, Norman McLaren, à travers l’apprentissage de multiples techniques d’animation (dessin animé, stop motion, pixillation, pellicule peinte ou ... [more ▼]

Figuremajeure du cinéma d’animation artisanal et expérimental, Norman McLaren, à travers l’apprentissage de multiples techniques d’animation (dessin animé, stop motion, pixillation, pellicule peinte ou grattée, expositions multiples...) n’a cessé d’étudier le mouvement. Si le cinéaste a, d’une part, émis un certain nombre de rapprochements entre la figure de l’animateur et celle du danseur, et, d’autre part, livré une œuvre qui fait date dans l’histoire du film de danse (le célèbre Pas de deux, 1968), c’est à une question moins apparente sur les liens entre danse et cinéma que cette intervention souhaite s’intéresser. En effet, à travers le commentaire d’une série de films conçus entre 1935 et 1972, il s’agira de comprendre de quelle manière la conception même du geste animé chez McLaren s’inscrit, dès ses prémisses, dans une logique d’invention chorégraphique. [less ▲]

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See detailImages à entendre. Le vocabulaire sonore des fêtes de 1622 dans les anciens Pays Bas
De Marco, Rosa ULg; Heering, Caroline

Conference (2017, March 16)

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See detailPrésentation du projet de thèse : Performance des entreprises et ressources territoriales multi-échelles en Belgique et Wallonie
Wilmotte, Pierre-François ULg

Conference (2017, March 16)

Présentation du projet doctoral dans le cadre du séminaire des doctorants de l'ASRDLF. L'objectif est de présenter le projet mais aussi de mettre en avant les difficultés éventuelles pour recueillir des ... [more ▼]

Présentation du projet doctoral dans le cadre du séminaire des doctorants de l'ASRDLF. L'objectif est de présenter le projet mais aussi de mettre en avant les difficultés éventuelles pour recueillir des conseils et suggestions de doctorants ou d'enseignants-chercheurs. Le projet a été présenté avec les éléments suivants : contexte, questions de recherche, méthodologie, premiers résultats et éléments attendus. [less ▲]

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See detailAdministration of Third-Party Mesenchymal Stromal Cells at the Time of Kidney Transplantation: Interim Safety Analysis at One-Year Follow-Up
WEEKERS, Laurent ULg; ERPICUM, Pauline ULg; DETRY, Olivier ULg et al

Conference (2017, March 16)

Mesenchymal stromal cells (MSC)-based therapy has been proposed in kidney transplantation (KTx). We report on the 1-year follow-up of an open-label phase I trial using MSC in KTx. On postoperative day 3 ... [more ▼]

Mesenchymal stromal cells (MSC)-based therapy has been proposed in kidney transplantation (KTx). We report on the 1-year follow-up of an open-label phase I trial using MSC in KTx. On postoperative day 3, third-party MSC (~2.0x106/kg) were administered to 7 non-immunized first-transplant recip- ients from deceased donors, under standard immunosuppression (Basiliximab, Tacrolimus, MMF and steroids). No HLA matching was required for MSC donors. Seven comparable KTx recipients were included as controls. Informed consent was obtained. No side-effect was noted at the time of MSC injection. Still, 1 patient with a history of ischemic heart disease had a NSTEMI ~3h after MSC infusion. Ten months after KTx, 1 MSC patient had type B aortic dissection and STEMI. Four MSC patients had at least 1 opportunistic infection, whereas 3 controls had polyoma-BK viremia. At day 14, eGFR in MSC and control groups was 47.1 ± 6.8 and 39.7 ± 5.9 ml/min, respectively (p, 0.05). At 1 year, eGFR in MSC and control groups was 46.5 ± 18.6 and 54.2 ± 16.3 ml/min, respectively (p, 0.42). Per-cause biopsies evidenced 1 bor- derline and 1 acute rejections in MSC group, whereas no AR was biopsy-proven in controls. Three patients developed anti-HLA antibodies against MSC (n=1) or shared kidney/MSC (n=2) mismatches.MSC infusion was safe in all patients except one. Incidence of opportunist infections was similar in both groups. No difference in eGFR was found at 1-year post KTx. Putative immunization against MSC was observed in 3 patients. [less ▲]

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See detailCancer in the organ donor
DETRY, Olivier ULg

Conference (2017, March 16)

Organ Donation and Cancer Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, University of Liege The risk of transmission of cancer with the transplanted organ has been known since the ... [more ▼]

Organ Donation and Cancer Pr Olivier Detry, Dpt of Abdominal Surgery and Transplantation, University of Liege The risk of transmission of cancer with the transplanted organ has been known since the pioneering years of solid organ transplantation, and is enhanced by immunosuppression and particularly the calcineurin inhibitors. Therefore, classically, potential organ donors with past history of cancer are excluded from donation, with the exception of low-grade malignant tumours of the central nervous system, the skin and the cervix uteri. Despite that policy, every year, some cases of cancer transmission with organ transplantation were regularly reported in transplant medical journals. At the other hand, there is a clear graft shortage, with long organ transplant waiting lists and inacceptable mortality while waiting for a life saving graft. One mean to increase the number of available grafts could be to accept donation from donors with past history of cancer. Several uncertainties remain: what is the risk of cancer transmission with organ transplantation? This risk depends of course of many donor factors, as the staging and the nature of the donor malignant tumour, the oncological management, the delay between the remission and the organ procurement. This risk may also vary according to the type of organ transplanted, as livers and lungs are more prone to bear occult metastases, compared to the hearts for example. In fact, this risk is unknown, and was clearly overestimated by the old registries as the IPTR, and by the various case reports. All modern prospective registries, as from UNOS or from UK transplant, now report a very low rate of cancer transmission when the donor cancer was known and evaluated before organ donation. Undiagnosed or occult cancer transmission with transplantation is clearly another issue that should not be mistaken with the donors with past history of cancer. In most of the recent reported cases of cancer transmission with transplantation, the donor cancer was not diagnosed before and during organ donation. And this risk increases in modern organ transplantation, as we are now accepting older and older donors, particularly in transplantation of the liver, an organ particularly at risk of metastases. Therefore surgical donor exploration is an important step of organ procurement. Body CT could be a tool to diagnose some, but not all, of these tumours. To my view, the risk of cancer transmission with transplantation has to be balanced with the risk of dying on the waiting lists. Donors with active or recent aggressive cancers have to be excluded from donation. Some types of aggressive cancers, as lymphoma or melanoma, are at high risk. In donors with past history of cancer with some years of remission, organ donation should be considered for recipients at high risk of death without a rapid transplantation. Particularly, heart transplantation, an organ with a low risk of cancer transmission but with a severe organ shortage, could benefit from such a policy. [less ▲]

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See detailMulti-instrument overview of the 1-hour pulsations in Saturn's magnetosphere
Palmaerts, Benjamin ULg; Roussos, Elias; Radioti, Aikaterini ULg et al

Conference (2017, March 16)

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See detailPositioning in multi-GNSS mode
Deprez, Cécile ULg; Warnant, René ULg

Conference (2017, March 16)

Satellite positioning is facing new challenges with the appearance of mass-market receivers and smartphones. Mainly, the reliability of the car navigation systems, the accuracy of positioning in ... [more ▼]

Satellite positioning is facing new challenges with the appearance of mass-market receivers and smartphones. Mainly, the reliability of the car navigation systems, the accuracy of positioning in smartphone—based applications and the availability of positions in urban canyon or deep forests suffer from the hardware limitations of these low-cost receivers. Would the multi-GNSS positioning be the solution to handle those challenges? Indeed, the number of satellites available has dramatically increased, given the expansion of two new global satellite constellations (Galileo (EU) and BeiDou (C)), and might meet these positioning challenges, at least to some extent. [less ▲]

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See detailintravenous administration of mesenchymal stream cells modulates renal lipid metabolism in rats
ERPICUM, Pauline ULg; Rowart, Pascal ULg; POMA, Laurence ULg et al

Conference (2017, March 16)

Mesenchymal stromal cells (MSC) have been shown to attenuate renal ischemia/reperfusion (I/R) injury in rodents. Still, the mechanisms of such a nephroprotection remain unclear. Here, rats were ... [more ▼]

Mesenchymal stromal cells (MSC) have been shown to attenuate renal ischemia/reperfusion (I/R) injury in rodents. Still, the mechanisms of such a nephroprotection remain unclear. Here, rats were intravenously infused with MSC (1.5x10^6 cells in 1 ml saline; MSCD-7 group, n=6) or equivalent volume of saline (SD-7 group, n=6) 7 days before kidney sampling. High-throughput RNA sequencing technology was used to compare transcriptomic renal profiles, using TopHat and Cufflinks open-source software tools. A total of 494 and 256 genes were found to be significantly (q-value <.05) down- and up-regulated in mscd-7 versus sd-7 groups, respectively. Hierarchical cluster analysis by “david” “webgestalt” softwares highlighted that the metabolic pathways mostly affected msc included adipogenesis, insulin signalling, fatty acid (fa) biosynthesis, il-6 b-cell receptor il-3 pathway nuclear receptors involved lipid me- tabolism. Real-time qpcr immunoblotting analyses confirmed pivotal enzymes of fa biosynthesis were significantly downregulated group, whereas expression ppar alpha, a transcription factor oxidation, was induced msc. Additional- ly, fat />CD36 – a key regulator of membrane uptake of FA – was increased in MSCD-7 kidneys, with a preferential localization in proximal tubules (PT). As a whole, our data suggest that MSC infusion causes critical modifications of lipid metabolism, including (i) down-regulation of FA biosynthesis; (ii) activation of PPAR alpha pathway, and (iii) prioritization of FA as sources of energy in PT cells, which may eventually prevent lipid peroxidation and attenuate renal I/R damage. [less ▲]

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See detailDeformations of soap bubbles in a uniform electric field
Mawet, Sébastien ULg

Conference (2017, March 15)

The study of the deformations undergone by a soap bubble submitted to an electrical force began with Taylor and Wilson 1 and the observation of the so-called Taylor’s cones. Beyond this particular ... [more ▼]

The study of the deformations undergone by a soap bubble submitted to an electrical force began with Taylor and Wilson 1 and the observation of the so-called Taylor’s cones. Beyond this particular structure, few studies analyzed the bubble deformations. For example, what is the link between the deformations and the electrical force ? Or, how do charges move in the thin soap film formed by the bubble ? To answer those questions, we characterize the shape variations of the surface of the bubble immersed in the uniform electric field of a plan capacitor. In particular, our study focuses on hemispherical bubbles lying on the bottom electrode of a plane capacitor. This study allows us to observe some interesting phenomena like the appearance of a hysteresis cycle in the deformation amplitude. [less ▲]

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See detailCabinet de curiosités contemporains : de l'oeuvre au musée
Bawin, Julie ULg

Conference (2017, March 15)

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See detailImprinting superconducting vortex footsteps in a magnetic layer
Brisbois, Jérémy ULg

Conference (2017, March 14)

We experimentally show that the principle of local polarization of a magnetic layer, a well-known method to store information, namely in hard drives and credit cards, can be applied for imprinting into a ... [more ▼]

We experimentally show that the principle of local polarization of a magnetic layer, a well-known method to store information, namely in hard drives and credit cards, can be applied for imprinting into a soft magnetic layer of permalloy (Py) the trajectory of vortices moving in a superconducting film (Nb). In full analogy with a magnetic drawing board, vortices act as tiny magnetic scribers leaving a wake of polarized magnetic media in the Py layer. We have used the magneto-optical imaging technique to investigate the mutual interaction between superconducting vortices and ferromagnetic domains. In general, we observe that the flux propagation is delayed at the border of the magnetic layer. Interestingly, in thin Py layers without stripe domains, vortices leave clear imprints of locally polarized magnetic moments along their trajectories. Furthermore, the printings were found to be stable and could still be observed at room temperature, allowing for ex situ observation of the flux penetration in superconductors. We expect our findings to pave the way for further studies for optimizing magnetic recording of superconducting vortex trajectories. [less ▲]

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See detailRealization of the Najafi-Golestanian microswimmer
Hubert, Maxime ULg; Grosjean, Galien ULg; Lagubeau, Guillaume et al

Conference (2017, March 14)

The development of artificial microswimmers, microscopic robots that swim in a fluid like sperm cells and motile bacteria, could cause a leap forward in various fields such as microfluidics, microsystems ... [more ▼]

The development of artificial microswimmers, microscopic robots that swim in a fluid like sperm cells and motile bacteria, could cause a leap forward in various fields such as microfluidics, microsystems, or minimally invasive medicine. Nature provides plenty of examples of efficient microswimmers. However, a bottom-up approach, looking at the simplest ingredients needed to generate a microswimmer, can lead to a deeper under- standing of the swimming problem. First described by Najafi and Golestanian 1 , a paradigmatic microswimmer is the three-linked-spheres model, which follows a minimalist approach for propulsion by shape shifting. In this presentation, we describe the experimental realisation of this microswimmer using self-assembled ferromagnetic particle at an air-water interface, powered by an uniform oscillating magnetic field 2 . A model, using two har- monic oscillators, reproduces the experimental findings. Because the model remains general, the same approach could be used to design a variety of efficient microswimmers. [less ▲]

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See detailFormation and characterization of artificial lipid bilayers on optical fibers
Toussaint, Pauline ULg; Dreesen, Laurent ULg

Conference (2017, March 14)

Transports across cellular membranes are at the basis of a lot of biological processes such as the transmission of information in neurons. Their characterization is therefore of crucial interest. As they ... [more ▼]

Transports across cellular membranes are at the basis of a lot of biological processes such as the transmission of information in neurons. Their characterization is therefore of crucial interest. As they are equivalent to biological membranes, artificial lipid bilayers can be created to study membranes and transmembrane proteins properties or transmembrane transports. The aim of this work is to develop a new method for the fabrication of artificial membranes based on the use of optical fibers as support for the bilayer, and for their characterization by fluorescence measurements. We use microfluidics on fibers to create two phospholipid monolayers that we approach close enough to form a bilayer. The membrane formation is checked using fluorescein or a fluorescent sodium probe, Tetra (tetramethylammonium) salt (sodium green), whose optical signal depends on sodium concentration. [less ▲]

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See detailEvaluation de la fonction rénale
DELANAYE, Pierre ULg

Conference (2017, March 14)

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See detailMechanisms of Igf2 inhibition in thymic epithelial cells infected with CVB4 E2
Michaux, Hélène ULg; Charlet-Renard, Chantal; Martens, Henri ULg et al

Poster (2017, March 12)

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See detailPolitiques Architecturales en Belgique
De Visscher, Lisa ULg

Poster (2017, March 10)

The procedures for tenders proposed by the different government architects or the Cellule Architecture in Flanders, Brussels and Wallonia have an important influence on the quality of the process of the ... [more ▼]

The procedures for tenders proposed by the different government architects or the Cellule Architecture in Flanders, Brussels and Wallonia have an important influence on the quality of the process of the project and therefore on its physical result. Comparison and analysis of the different existing procedures. [less ▲]

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See detailMUNIX vs TASPM
WANG, François-Charles ULg

Conference (2017, March 10)

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See detailDéveloppements scientifiques et nouvelles technologies pour l'application de produits phytosanitaires de précision
Lebeau, Frédéric ULg

Conference (2017, March 10)

Depuis leur introduction, les produits phytosanitaires ont largement démontré leur efficacité pour assurer des rendements agricoles élevés. Toutefois, les nuisances sanitaires et environnementales sont ... [more ▼]

Depuis leur introduction, les produits phytosanitaires ont largement démontré leur efficacité pour assurer des rendements agricoles élevés. Toutefois, les nuisances sanitaires et environnementales sont rapidement apparues ainsi que le développement de diverses résistances. Les développements scientifiques récents, qui permettent une meilleure compréhension du processus d’application tant pour les chercheurs que les agriculteurs, ouvrent la porte à de nombreux développements technologiques. Une présentation des principales bases physiques du processus permet d’éclaircir les diverses options technologiques à la disposition des agriculteurs pour améliorer leurs pratiques en traitement des cultures. En particulier, l’attention est portée sur la trajectoire des gouttes entre la buse et sa cible ainsi que la rétention du produit par les plantes. Ces considérations se traduisent par diverses options technologiques au niveau des agro-équipements et produits de traitement qui doivent être prises en considération pour effectuer les investissements les plus pertinents et choisir les meilleures options lors du traitement. [less ▲]

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See detailAnticoherence measures for spin states
Baguette, Dorian ULg; Martin, John ULg

Poster (2017, March 09)

Among all possible spin states, spin-coherent states are the most classical because the spin expectation value in these states yields a vector of maximal norm pointing in a well defined direction. In ... [more ▼]

Among all possible spin states, spin-coherent states are the most classical because the spin expectation value in these states yields a vector of maximal norm pointing in a well defined direction. In contrast, anticoherent spin state to order t are such that <(J.n)^k> is independent of the unit vector n for k = 1, ..., t [1]. By construction, coherent and anticoherent spin states are at both ends of the spectrum of classicality. The aim of this work is to position all possible spin states on such a spectrum, that is to provide measures of anticoherence. To this aim, we introduce an axiomatic definition of anticoherence measures to any order t. In particular, we show that the total variance of a pure spin state, first introduced in [2] can be used to define a measure of anticoherence to order 1. We describe a systematic way of constructing anticoherence measures to any order that relies on the mapping between spin-j states and symmetric states of N = 2j spin-1/2. In particular, we exploit the fact that anticoherent spin states to order t have maximally mixed t-spin-1/2 reduced density matrices in the symmetric subspace [3]. [1] J. Zimba, Electron. J. Theor. Phys. 3, 143 (2006). [2] A. A. Klyachko, B. Öztop, and A. S. Shumovsky, Phys. Rev. A 75, 032315 (2007). [3] D. Baguette, T. Bastin, and J. Martin, Phys. Rev A 90, 032314 (2014). [less ▲]

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See detailSensations of the Shallow Body: Surgery, Dissections, and Technologies of Touch in Renaissance Italy
Von Hoffmann, Viktoria ULg

Conference (2017, March 09)

My contribution is part of a new work in progress exploring the sense of touch in Italian Renaissance anatomy. Through regular experiences of surgery and dissections, anatomists/surgeons refined their ... [more ▼]

My contribution is part of a new work in progress exploring the sense of touch in Italian Renaissance anatomy. Through regular experiences of surgery and dissections, anatomists/surgeons refined their sense of touch and developed a particularly acute ability to feel and act upon bodily parts and substances. By looking at the dissecting body—the hand, fingers, and skin of anatomists/surgeons—this paper will examine the body dissected—especially its bones, muscles, and surfaces—highlighting the multiple layers of the sense of touch in the Renaissance. [less ▲]

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See detailUne illustration de multidisciplinarité:"La concertation multidisciplinaire"
Buret, Laetitia ULg

Conference (2017, March 09)

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See detailLong-range Rydberg-blockade entangling gate mediated by auxiliary atoms
Cesa, Alexandre ULg; Martin, John ULg

Poster (2017, March 09)

Arrays of qubits encoded in the ground state manifold of trapped neutral atoms appear as a promising platform for the realisation of a scalable quantum computer. Indeed, such physical qubits have a long ... [more ▼]

Arrays of qubits encoded in the ground state manifold of trapped neutral atoms appear as a promising platform for the realisation of a scalable quantum computer. Indeed, such physical qubits have a long coherence time and allow for high-fidelity single-qubit operations [1]. In such a platform, entangling two-qubit gates can be implemented by exploiting the Rydberg-blockade mechanism to produce a phase shift or a flip of the state of a target atom conditioned on the state of a control atom [2]. However, because dipole-dipole interactions fall off rapidly with the interatomic distance, such entangling gates based on Rydberg-blockade are impractical between distant qubits. In this work, we propose a protocol to implement long-range Rydberg-blockade gates (CZ or CNot) using auxillary non-coding atoms to transfer the Rydberg excitation from the control to the target qubit. The dependence of the fidelity on the number of auxillary atoms, the blockade strength and the decay rates of the Rydberg states are determined. When compared to a sequential application of nearest neighbours entangling gates, our protocol leads to a larger fidelity and a reduction of the overall gate duration (which scales linearly with the number of auxillary atoms). [1] M. Saffman, J. Phys. B: At. Mol. Opt. Phys. 49, 202001 (2016). [2] D. Jaksch, J. I. Cirac, P. Zoller, S. L. Rolston, R. Côté, and M. D. Lukin, Phys. Rev. Lett. 85, 2208 (2000). [less ▲]

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See detailUnravelling Potential Roles of HTLV-1 Tax and HBZ Proteins in mRNA Splicing Regulation
Vandermeulen, Charlotte ULg; Cherkaoui, Majid ULg; A. Calderwood, Michael et al

Poster (2017, March 08)

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See detailCatalytic reforming of gasification tars with bi- and trimetallic catalysts optimized with organosilane precursors
Claude, Vincent ULg; Lambert, Stéphanie ULg

Poster (2017, March 07)

Biomass gasification is interesting for the production of CO + H2 from wastes and catalysts are necessary for tars degradation. Catalysts were synthesized by the sol-gel process to develop γ-Al2O3 doped ... [more ▼]

Biomass gasification is interesting for the production of CO + H2 from wastes and catalysts are necessary for tars degradation. Catalysts were synthesized by the sol-gel process to develop γ-Al2O3 doped with 10%wt of nickel and 2 wt.% of a second dopant (Co, Cu, Fe, Mn, Mo). Before their adding in AlOOH sol, metallic dopants were complexed with (OCH3)3-Si-(CH2)3-NH-(CH2)2-NH2 (EDAS) to increase their dispersion by cogelation between EDAS and AlOOH clusters. These catalysts were tested at 650°C for toluene reforming. [less ▲]

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See detailCharacterizing exoplanetary atmospheres with a mid-infrared nulling spectrograph
Defrere, Denis ULg; Léger, Alain; Absil, Olivier ULg et al

Poster (2017, March 07)

The discovery of an increasing number of terrestrial planets around nearby stars marks the dawn of a new era in the exoplanet field: the characterization and understanding of their atmospheres. To make ... [more ▼]

The discovery of an increasing number of terrestrial planets around nearby stars marks the dawn of a new era in the exoplanet field: the characterization and understanding of their atmospheres. To make significant progress, it becomes clear that a large number of exoplanetary atmospheres have to be studied at various wavelengths. This is particularly relevant for identifying possible bio-signatures. In this poster, we present a concept of a space-based mid-infrared nulling spectrograph that can characterize a large number of exoplanetary atmospheres and provide key information on their size, surface temperature, and the presence of key molecules such as CO2, H2O, CH4 and O3. The proposed mission concept would be particularly suited to characterize Proxima Cen b. [less ▲]

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See detailMusical(ized) Biographies: Jackie Kay’s Trumpet and Caryl Phillips’s Dancing in the Dark
Mascoli, Giulia ULg

Conference (2017, March 03)

My paper deals with two musical(ized) biographies: Jackie Kay’s Trumpet (1998) and Caryl Phillips’s Dancing in the Dark (2005). These literary works share features, at once thematic, since the protagonist ... [more ▼]

My paper deals with two musical(ized) biographies: Jackie Kay’s Trumpet (1998) and Caryl Phillips’s Dancing in the Dark (2005). These literary works share features, at once thematic, since the protagonist is a musical performer, and formal, as both writers’ prose is drenched with musicality. The two narratives can thus be considered what Emily Petermann (2014) calls “musical novels”, as both display sonic and structural patterns as well as elements of improvisation (the imitation of orality; the use of different narrators and the inclusion of various types of texts such as lyrics, interviews, excerpts from newspapers, and the solo performances through improvised jazzy breaks and the repetition of the same lexical item). In my paper, I will take my cue from Eric Prieto, who writes that interart analogies should not be taken as ends in themselves, and I will try to show the purpose of such intermediality and how it can contribute to the biographical genre. Among other things, I will examine whether these musicalized biographies have, through their unusual forms, particular social and political relevance and how approaching them from this methodological angle can serve as interpretative aid. [less ▲]

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See detailA meta-analysis of isotopic compositions of North Sea marine mammals
Damseaux, France ULg; Lepoint, Gilles ULg; Das, Krishna ULg

Conference (2017, March 03)

For over a decade, the North Sea has been undergoing significant changes due to global changes and overfishing. We conducted meta-analyses of previously published data on marine mammals sampled in the ... [more ▼]

For over a decade, the North Sea has been undergoing significant changes due to global changes and overfishing. We conducted meta-analyses of previously published data on marine mammals sampled in the North Sea to test the competition for food sources and spatial variations. The overall objective of this study was to assess the potential trophic changes of the grey seal, the harbour seal and the harbour porpoise. Data included δ13C and δ15N values measured in blood cells and muscles from the three species. SIBER, a trophic niche overlap quantification approach, highlighted potential competition between marine mammal species. The ellipse drawn for harbour seal data showed the highest δ15N values, reflecting its trophic position at the top of the food web. But the ellipse overlapping between the harbour seal and the grey seal of Germany was very important, showing a potential strong competition for food sources may be due to the overfishing. The harbour porpoise displayed a lower trophic position and a wide range of δ13C and δ15N values compared to harbour seal and grey seal as seen from its extended ellipse size. This may be due to a more opportunistic behaviour following the decline of some fish population in the North Sea. Surprisingly a group of grey seals sampled in Scotland present a very small ellipse size, presumably more selective in their prey choice, and showed the lowest δ15N values. Caution should be taken before comparing the trophic position of the groups of grey seals as the baseline differed between the two sampling areas. Low nitrates concentrations, higher latitudes, colder temperatures, deeper waters and rocky soils of the Scotland’s coasts of the North Sea cause a stratification phenomenon of the water column explaining the lower δ15N baseline in this area and so the spatial variation between these two groups of grey seals living in the North Sea. [less ▲]

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See detailIncreased sea ice cover disrupts food web structure in coastal Antarctica
Michel, Loïc ULg; Dubois, Philippe; Eleaume, Marc et al

Conference (2017, March 03)

Antarctica currently undergoes strong and contrasted impacts linked with climate change. While the West Antarctic Peninsula is one of the most rapidly warming regions in the world, resulting in sea ice ... [more ▼]

Antarctica currently undergoes strong and contrasted impacts linked with climate change. While the West Antarctic Peninsula is one of the most rapidly warming regions in the world, resulting in sea ice cover decrease, the sea ice cover of East Antarctica unexpectedly tends to increase, possibly in relation with changes in atmospheric circulation. Sea ice is a major environmental driver in Antarctica, and changes in sea ice cover are likely to influence benthic food web structure through several processes (modifications of benthic-pelagic coupling, disruption of benthic production and/or modifications of benthic community structure and therefore resource availability for benthic consumers). To date, regions where sea ice cover is decreasing have received more attention than regions where it is increasing. Here, on the other hand, we studied shallow (0-20 m) benthic food web structure on the coasts of Petrels Island (Adélie Land, East Antarctica) during an event of unusually high spatial and temporal (two successive austral summers without seasonal break-up) sea ice cover. Using time-tested integrative trophic markers (stable isotope ratios of carbon, nitrogen and sulfur) and state-of-the-art data analysis tools (bayesian ecological models), we studied the structure of the food web associated to benthic macroinvertebrates communities. In total, 28 macroinvertebrate taxa spanning most present animal groups (sponges, sea anemones, nemerteans, nematods, sipunculids, sessile and mobile polychaetes, gastropods, bivalves, pycnogonids, crustaceans, sea stars, sea urchins, brittle stars and sea cucumbers) and functional guilds (grazers, deposit feeders, filter feeders, predators, scavengers) were investigated. Our results indicate that the absence of seasonal sea ice breakup deeply influences coastal benthic food webs in Antarctica. We recorded marked differences from literature data, both in terms of horizontal (i.e. primary producers and resources supporting animal populations) and vertical (i.e. trophic level of the studied consumers) structure of the food web. Overall, sympagic (sea-ice associated) algae dominated the diet of many important consumers, and the trophic levels of invertebrates were low, suggesting omnivore consumers relied less on predation and/or scavenging than in normal environmental conditions. Surprisingly, few animals seemed to feed on the extremely abundant benthic biofilm, whose exceptional development was also presumably linked with the peculiar sea ice conditions. Interpretation of data was complicated by the peculiar ecophysiological features of Antarctic invertebrates, whose very low metabolic rates could be associated to low tissue turnover. However, comparison of data obtained in the austral summers of 2013-2014 (first year without seasonal breakup) and 2014-2015 (second year without seasonal breakup) clearly showed that the observed trends were linked with actual temporal changes in invertebrate feeding habits rather than with other potential ecological drivers. Our results provide insights about how Antarctic benthic consumers, which have evolved in an extremely stable environment, might adapt their feeding habits in response to sudden man-driven changes in environmental conditions and trophic resource availability. They also show that local and/or global trends of sea ice increase in Antarctica could cause strong changes in food web structure and therefore impact zoobenthic communities. This reinforces the view that, no matter their overall direction (i.e. increase or decrease), fluctuations in sea ice cover are likely to influence Antarctic benthic ecosystems' structure and functioning. [less ▲]

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See detailSemper Incertus: Authorization through Uncertainty in Hanif Kureishi’s My Ear at His Heart: Reading my Father
Munos, Delphine ULg

Conference (2017, March 02)

In Postcolonial Writers in the Global Literary Marketplace (2007), Sarah Brouillette discusses “the centrality of questions of biography in reception of postcolonial texts” (173). She argues that, as ... [more ▼]

In Postcolonial Writers in the Global Literary Marketplace (2007), Sarah Brouillette discusses “the centrality of questions of biography in reception of postcolonial texts” (173). She argues that, as against “the supposed dominant orthodoxy of anti-authorialism in literary studies” (173), successful marketing of postcolonial literature depends on – indeed requires – “biographical authenticity” so that postcolonial writers can figure valid interpreters of an authenticated location for an Anglo-American audience “schooled in multiculturalism.” Brouillette’s perception that the marketing of postcolonial writing depends on the coincidence between literary material and the biographical self of its author raises fascinating questions when it comes to examining ‘postcolonial’ biographies and autobiographies already relying on a “referential pact” (cf. Lejeune) because of their generic anatomy. Biographical fiction, then is a postcolonial nightmare come true, as the specificities of the genre endlessly displace the demand for “biographical authenticity” that is seen by Brouillette to condition the niche marketing of postcolonial literature. This paper looks at Hanif Kureishi’s My Ear at His Heart: Reading My Father (2004), in which the popular British Asian author narrativizes his ambivalent relationship with his father and retraces his father’s life from British India to the UK of the 1960s and 1970s. What is interesting is that Kureishi both relies on memory and on two unpublished ‘fictional’ texts by his late father to reconstruct the latter’s life, thus “imagining around [others’] imagination” (2004: 238), as he phrases it, that is, embracing fiction – not only memory – as a valid starting point for representing the life of his father. Susie Thomas writes that “It is a major irony that Kureishi, as a reader, approaches his father’s novels in a way that he would doubtless object to if his own fiction were raided for its autobiographical content” (2006: 189). My claim is that this “major irony” becomes a means, for Kureishi, of authorizing himself a place outside the ‘British Asian ghetto’ by playing up to the expectations of postcolonial niche marketing. [less ▲]

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See detailPhotonic photoanode for macroporous perovskite solar cells
Baron, Damien ULg; Dewalque, Jennifer ULg; Henrist, Catherine ULg et al

Poster (2017, March 01)

Organic-inorganic metal halide perovskite solar cells (PSCs) have reached power conversion efficiencies over 20%. Two archetypal PSC architectures are reported in the literature: mesoporous and planar ... [more ▼]

Organic-inorganic metal halide perovskite solar cells (PSCs) have reached power conversion efficiencies over 20%. Two archetypal PSC architectures are reported in the literature: mesoporous and planar PSCs. In the former one, a mesoporous TiO2 scaffold is incorporated into the cell. Because sizes of the mesopores are typically small compared to wavelengths of visible light, the scaffold barely scatters light. In this work, we propose to periodically structure a porous TiO2 scaffold incorporating pores with diameters comparable to wavelengths of visible light thanks to the use of colloidal crystal templating fabrication method. The resulting TiO2 scaffold filled with perovskite will constitute an opal-like photonic crystal incorporated in the solar cell, which will strongly interact with light. Through Finite Difference Time Domain (FDTD) simulations, we demonstrate that the photonic crystal induces resonances that can be exploited to modulate light harvesting in the macroporous TiO2 layer. Sunlight absorption by the PSC will be presented and discussed with dependency of pore sizes and number of opal layers. [less ▲]

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See detailInverse opal photoanodes: preparation and optical properties
Dewalque, Jennifer ULg; Spronck, Gilles ULg; Baron, Damien ULg et al

Conference (2017, March 01)

Perovskite compounds, used either in mesoscopic or planar solar cells, have allowed preparing highly efficient solid-state devices (>20%). In this study, we propose to design photoanodes with photonic ... [more ▼]

Perovskite compounds, used either in mesoscopic or planar solar cells, have allowed preparing highly efficient solid-state devices (>20%). In this study, we propose to design photoanodes with photonic structure in order to modulate light interaction. The periodic structure of porosity could add specific optical properties likely to increase light harvesting and reduce reflexion losses. Besides, current efficiencies reported for mesoscopic perovskite solar cells using an inorganic porous scaffold are slightly lower than those reported for planar perovskite cells mainly due to issues in perovskite infiltration. The control of the porous network architecture in terms of pore organization, size and connectivity could overcome this limitation. TiO2/perovskite and perovskite-only photoanodes with an inverse opal porous structure are prepared from templating techniques, using polystyrene beads as structuring agent. The photoanode microstructure is further characterized by scanning electron microscopy (SEM) and X-Ray diffraction (XRD). In parallel, light interaction is modeled in order to find the best compromise in terms of photonic architecture (pore size, organization, thickness…). [less ▲]

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See detailNear-death experiences: recent findings
Martial, Charlotte ULg

Conference (2017, March)

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See detailExpanding chemistry's horizon with continuous-flow reactors
Monbaliu, Jean-Christophe ULg

in Corning Reactor Technologies Annual Conference (2017) (2017, March)

Continuous-flow micro- and mesofluidic reactors come with inherent properties that can be advantageously utilized for expanding the horizon of synthetic organic chemistry. Accurate control over local ... [more ▼]

Continuous-flow micro- and mesofluidic reactors come with inherent properties that can be advantageously utilized for expanding the horizon of synthetic organic chemistry. Accurate control over local process parameters, even under extreme conditions, inherent safety, production homogeneity and seamless scale-up are amongst the most important assets of continuous-flow chemistry. Besides, flow chemistry enables the design of efficient multistep processes with significantly reduced footprints. In this lecture, we will discuss some of the most fascinating aspects of continuous-flow micro- and mesofluidic reactors in the specific context of preparative organic chemistry. Multiple examples illustrating the development and implementation of continuous-flow multistep strategies for the synthesis of high-value added organic targets will be presented. [less ▲]

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See detailImmunomodulatory effects of rapamycin in xenogeneic Graft versus Host Disease
Ehx, Grégory ULg; Hannon, Muriel ULg; DUBOIS, Sophie ULg et al

in Biology of Blood and Marrow Transplantation (2017, March), 23(3), 365366

Graft-versus-host disease (GVHD) remains a major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation. Several studies have suggested that rapamycin (RAPA), an mTOR ... [more ▼]

Graft-versus-host disease (GVHD) remains a major cause of morbidity and mortality after allogeneic hematopoietic stem cell transplantation. Several studies have suggested that rapamycin (RAPA), an mTOR inhibitor with immunosuppressive properties, may reduce GVHD severity and mortality, possibly by promoting regulatory T cells (Tregs). However, few data have been reported about the impact of this drug on overall T cell population. The present work aims at investigating the mechanisms by which RAPA impacts GVHD in a humanized mouse model of GVHD (NSG mice infused with human PBMCs). We observed that RAPA injections significantly reduced xenogeneic GVHD lethality and severity. RAPA dramatically reduced human cells chimerism in RAPA mice and increased CD4+/CD8+ T cells balance due to a lower proliferation of CD8+ T cells. In addition, the frequencies of naive CD4+ and CD8+ T cells were higher and the CD4+ T cells showed a reduced effector phenotype (CD45RO+CD27-). Further, the differentiation of helper T cells (Th1, Th2 and Th17) was significantly decreased in treated mice. Tregs were positively affected as RAPA up-regulated their expression of BCL-2 and KI67 as well as their STAT5 phosphorylation level, leading to higher Treg frequency in treated mice. Altogether these data suggest that RAPA ameliorates GVHD by lowering cytotoxic and effector CD4+ T cells frequency as well as promoting Tregs. [less ▲]

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See detailMetronomic treatments in Pediatric Neuro-Oncology, a new therapeutic alternative?
Fohn, Anaïs; Hoyoux, Claire; DRESSE, Marie-Françoise ULg et al

in Tijdschrift van de Belgische Kinderarts = Journal du Pédiatre Belge (2017, March), 19(1), 88

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See detailCan science explain consciousness? Lessons from coma and related states
Martial, Charlotte ULg

Conference (2017, March)

Understanding consciousness remains one of the greatest mysteries for science to solve. How do our brains work? How can we know if some patients in coma have any consciousness left and how could we ... [more ▼]

Understanding consciousness remains one of the greatest mysteries for science to solve. How do our brains work? How can we know if some patients in coma have any consciousness left and how could we communicate with them? What are near-death experiences? What is brain death? What happens in our brains during dreaming, hypnosis or meditation? At present, nobody understands how matter (our trillions of neural connections) becomes perception and thought. We will here briefly review some neurological facts on consciousness and impaired consciousness. Thanks to recent advances in (neuroimaging) technology, the mapping of conscious perception and cognition in health (e.g., conscious waking, sleep, dreaming, hypnosis, meditation, sleepwalking and anesthesia) and in disease (e.g., coma, near-death, “vegetative” state, seizures, hallucinations etc) is providing exiting new insights into the functional neuroanatomy of human consciousness. Our perception of the outside world (sensory awareness; what we see, hear, etc.) and our awareness of an inner world (self-awareness; the little "voice" inside that "speaks" to ourselves) seemingly depend on two separate networks we could recently identify. Philosophers might argue that the subjective aspect of the mind will never be sufficiently accounted for by the objective methods of reductionistic science. We here prefer a more pragmatic approach and remain naively optimistic that technological advances might ultimately lead to an understanding of the neural substrate of human consciousness. [less ▲]

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See detailRibbons of superparamagnetic colloids in magnetic field
Darras, Alexis ULg; Fiscina, Jorge; Pakpour, Maryam et al

Conference (2017, March)

While the aggregation process of superparamagnetic colloids in strong magnetic eld is well known on short time since a few decades, recent theoretical works predicted an equilibrium state reached after a ... [more ▼]

While the aggregation process of superparamagnetic colloids in strong magnetic eld is well known on short time since a few decades, recent theoretical works predicted an equilibrium state reached after a long time. In this talk, we present experimental observations of this equilibrium state with a twodimensional system and we compare our data with the predictions of a pre-existing model. Above a critical aggregation size, a deviation between the model and the experimental data is observed. This deviation is explained by the formation of ribbon-shaped aggregates. The ribbons are formed due to lateral aggregation of chains. An estimation of the magnetic energy for chains and ribbons shows that ribbons are stable structures when the number of magnetic grains is higher than N=30. [less ▲]

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See detailAging and Recollection: a context story
Folville, Adrien ULg; Bastin, Christine ULg; Willems, Sylvie ULg

Poster (2017, March)

Although aging is related to decline in recollection as measured by so-called objective measures, older adults’ subjective experience of recollection remains sometimes stable. Such dissociation could ... [more ▼]

Although aging is related to decline in recollection as measured by so-called objective measures, older adults’ subjective experience of recollection remains sometimes stable. Such dissociation could suggest that younger and older adults use details with different diagnosticity to make subjective recollection judgments. However, the type of details that are reported as bases for recollective experiences by younger adults can also vary as a function of context. Here, we directly investigated age-related changes in recollection and familiarity in different memorability context. Participants studied one set of words in a medium level of processing (LOP) task, and another set of words with either a shallow or deep LOP task (i.e., low vs. high memorability context, respectively). At test, participants discriminated between old and new words and provided information about the basis of their recollective experiences. In both age groups, medium items received more recollection judgments in low (vs. high) memorability context. These recollections seem to be associated with internal information (thought, image, emotion). In contrast, external details (list source, appearance, list position) more often accompanied recollection of medium items in high (vs. low) memorability context. We discuss this effect in terms of Gruppuso et al.’s (1997) functional account. Like younger adults, what older adults deem to be an experience of remembering arises from the functional utility of the recollected information for accomplishing the task. In the low (vs. high) memorability context, the information recollected for medium items more easily met the functional definition of remembering established by participants during the test. [less ▲]

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See detailOrder and Synopsis in Descartes 1640-1641
Dubouclez, Olivier ULg

Conference (2017, March)

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See detailINVESTIGATION DE LA QUALITE D’ANTIBIOTIQUES A BASE D'AMOXICILLINE DANS LE CADRE DE LA SURVEILLANCE DU MARCHE OFFICIEL ET PERIPHERIQUE DE QUELQUES VILLES DE LA R.D. CONGO
Kalenda Tshilombo, Nicodème ULg; Ciza Hamuli, Patient ULg; Mavungu Landu, Don Jethro ULg et al

Poster (2017, March)

Drug counterfeiting is a sad and worrisome reality, especially in developing countries where quality control is not effective and sometimes not existing at all despite political will of governments. The ... [more ▼]

Drug counterfeiting is a sad and worrisome reality, especially in developing countries where quality control is not effective and sometimes not existing at all despite political will of governments. The consequences are harmful in particular for substandard medicines that pose more threats to populations in those countries due to their direct negative impact on patients such as failure of medical treatment including development of drug resistance and even death. Socio-economic consequences and negative reputation concerning the pharmaceutical industry are also observed. Unfortunately accurate detailed data on such medicines are not easy to obtain. Most of the time available data are often estimated from case reports or studies carried out in a specific area and during a defined period.Health authorities’ in the Democratic Republic of Congo are trying to identify this scourge by set up several strategies to fight against. One of them is built on the best knowledge of drugs from several horizons through the assessment of their quality to allow appropriate measurement. In this context, we have focused our study towards amoxicillin alone and/or combined with potassium clavulanate since it is one the very used medicines in pediatric medications. The formulations are powder for suspension. Two analytical methods were developed based on the USP monography, applying isocratic liquid chromatography. Prior to their application in routine, we evaluated the suitability of these methods through validation applying the accuracy profile of total error. Since it was planned to transfer the methods to DRC, several operating factors were taken into account namely operator, day and equipment. Interesting results were obtained in terms of trueness (relative biases below than 2.3%), precision (RSD of Intermediate precision below 2.8%), accuracy (beta-expectation tolerance intervals between -6.0% and 3.8%) for the concentration levels of interest. The latter were able to allow monitoring the quality of the two active ingredients here above in the 65 samples from Congolese market. They were collected in Kinshasa, Lubumbashi, Matadi and Kolwezi at official and non-official medicines distributors, in peripheral area. The dramatic results obtained confirm that substandard and counterfeit medicines remain a crucial problem on public health in low-income countries. Appropriate measures are really needed to set up the drug quality improvement. [less ▲]

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See detailMassivement histologique : entre continuité et (r)évolution pédagogique. Lancement du premier Massive Open Online Course (MOOC) sur des travaux pratiques en Histologie à destination de nos étudiants mais aussi du grand public.
Multon, Sylvie ULg; Pesesse, Laurence ULg; Weatherspoon, Alodie ULg et al

Poster (2017, March)

L’acronyme anglophone MOOC désigne les « Massive Open Online Courses » que l’on pourrait traduire par « formation en ligne massive ouverte à tous ». Nés aux États-Unis avec un programme sur l’intelligence ... [more ▼]

L’acronyme anglophone MOOC désigne les « Massive Open Online Courses » que l’on pourrait traduire par « formation en ligne massive ouverte à tous ». Nés aux États-Unis avec un programme sur l’intelligence artificielle dispensé par l’université de Stanford, ces cours en ligne accessibles gratuitement font miroiter la possibilité d’une démocratisation maximale des savoirs. A ce titre, les MOOC bénéficient des innovations issues du Web 2.0 : ils tirent le meilleur de la rencontre entre les nouveaux usages induits par les réseaux sociaux et les apports de la pédagogique active. Ces cinq dernières années, nous avons dispensé les travaux pratiques en Histologie aux premières années d’étude de la faculté de Médecine de l’Université de Liège par une méthodologie hybride alliant les bénéfices d’un enseignement à distance et ceux de séances menées en face-à-face (Multon et al., 2015). Notre dispositif d’auto-apprentissage invite chaque année plus de 500 étudiants à parcourir plusieurs coupes d’organes digitalisées afin de découvrir les structures histologiques pointées par des balises interactives pour chaque grande famille de tissus. La mise en ligne d’un MOOC dédié aux travaux pratiques d’Histologie s’inscrit dans une suite logique de nos activités avec une volonté de donner accès à nos ressources numériques à un public plus large. « Découvrir les tissus fondamentaux du corps humain en explorant par vous même des lames histologiques au microscope », tel est le programme de notre MOOC intitulé « Introduction à l’histologie, exploration des tissus du corps humain ». Celui-ci a débuté en février 2017 et est hébergé sur la plate-forme FUN encadrée par le ministère de l’Enseignement supérieur et de la Recherche du ministère français (https://www.fun-mooc.fr/courses/ulg/108001/session01/about). Ce MOOC s’adresse à un public large : aux étudiants ou futurs étudiants dans le domaine médical, paramédical ou scientifique, aux enseignants, chercheurs, professionnels dans le secteur de la santé, décideurs dans le domaine de l’éducation ou de la santé ou simplement aux curieux désireux de comprendre à partir de quoi le corps humain est construit. Deux parcours pédagogiques permettant d’approfondir différemment la matière sont proposés pour correspondre au mieux aux objectifs ou motivations de chacun. Au travers de vidéos explicatives contenant des dessins réalisés sous vos yeux et des liens avec l’anatomie suivie d’activités interactives telles que la manipulation d’un microscope virtuel, de nombreux quiz et d’activités réalisées avec les pairs, les participants seront capables de reconnaître les différents types de cellules et tous les éléments qui les entourent afin de comprendre comment ils s’organisent entre eux pour former des tissus aux fonctions spécifiques. Une recherche est actuellement en cours sur l’étude des traces d’activités des participants au MOOC en fonction du parcours pédagogique choisi afin d’évaluer notamment l’impact des différentes composantes de l’expérience d’apprentissage. [less ▲]

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See detailBetween practices and belongings: intersectional stories of migrant women around food
Mescoli, Elsa ULg

Conference (2017, March)

Short abstract Based on ethnographic fieldwork conducted among Moroccan women living in Milan hinterland in Italy, this paper aims at exploring the negotiated ways of performing both cultural and social ... [more ▼]

Short abstract Based on ethnographic fieldwork conducted among Moroccan women living in Milan hinterland in Italy, this paper aims at exploring the negotiated ways of performing both cultural and social belongings through food and at pointing out how these two dimensions can diverge or overlap in practice. Long abstract Migration constitutes for human beings an opportunity – among others – to develop a reflexive gaze upon one’s own habits (Rodier 2010), food habits in the case under study. In fact, not only changes that may occur in the ways of eating, cooking and supplying of produces, but also new relationships push individuals to question their everyday practices, which are associated with specific meanings. These meanings are socially and culturally oriented and performative, since they permit to state belongings as well as to take part to differently defined groups. In order to study these dynamics, I will present some ethnographic data collected during a research among Moroccan women living in Milan hinterland in Italy, mainly focusing on the history of two of them. The description of food practices, embedded in the narration of the migration experience and its consequences, which in its turn interacts with contextual discourses around immigrants and cultural diversity, reveals unexpected strategies to take social and cultural positionings within the collectivity. The theoretical framework upon which my analysis relies consists of a praxeological approach to subjectivation (Warnier 2001) combined with the consideration of the multi-dimensionality of the self which is derived from the intersectional perspective on identity (Crenshaw 1989; Anthias 2002; Yuval-Davis 2006). Through concrete practices involving food, individuals – women in this case – define their self as a layered complex of belongings, and they do that at both social and cultural level; thus proving how these two dimensions can diverge or overlap. [less ▲]

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See detailMicro-mechanical testing of magnesium based composites reinforced by carbon fibers manufactured by friction stir processing
Simar, Aude; Ryelandt, Sophie; Delannay, Francis et al

Conference (2017, February 28)

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been ... [more ▼]

Short C fibres–Mg matrix (AZ91D) composites have been produced by friction stir processing sandwiches made of a layer of C fabric stacked between two sheets of Mg alloy. The process parameters have been optimized to ensure a good fiber distribution. 3D X-ray tomography reveals that the fibers orient like onion rings. Thermal treatments have allowed to modify the flow stress level of the matrix material. Tensile testing inside the scanning electron microscope have revealed the decohesion at the fiber/matrix interface if the fibers are preferentially oriented perpendicularly to the loading direction. Modelling allows to estimate the stress needed to initiate this decohesion is about 250 MPa, i.e. appearing early in heat treated samples. To compare with different loading conditions, micro-compression and instrumented micro-indentation testing have also been performed. The consequence of the loading path on the decohesion is discussed. [less ▲]

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See detailOptimized integration of heat storage into district heating networks fed by a biomass CHP plant.
Sartor, Kevin ULg

in Proceedings (2017, February 28)

Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However ... [more ▼]

Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However, as CHP plants are not optimized for electricity production, their operation is profitable only if a sufficient heat demand is available throughout the year. On the other hand, these plants often work for baseline operation and back-up boilers are used to supply the peak demand. To extend the use of the CHP plants and reduce costs, conventional fuel use and emissions, it is proposed to study the feasibility of using additional high temperature heat storage as retrofit of an existing CHP plant. This work is based on a simple and effective methodology that provides accurate estimations of economic, environmental and energetic performances of CHP plants connected to district heating networks. The DHN of the University in Liège (Belgium) is used as an application framework to demonstrate the effectiveness of the selected approach. The potential energy and pollutant emissions savings and resulting energy costs are estimated and the current policy limitations will be discussed. [less ▲]

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See detailThermal comfort models for net zero energy buildings in hot climates
Belkhouane, Hamza ULg; Hensen, Jan; Attia, Shady ULg

in Second International Conference on Energy and Indoor Environment for Hot Climates (2017, February 26)

Several energy efficiency concepts and comfort models emerged in the last 15 years seeking high performance buildings and optimal occupant comfort conditions. The aim of high performance buildings is to ... [more ▼]

Several energy efficiency concepts and comfort models emerged in the last 15 years seeking high performance buildings and optimal occupant comfort conditions. The aim of high performance buildings is to reduce the carbon footprint and energy consumption of buildings while maintain a fit to purpose comfort. In this context, this work raises the question of fir to purpose comfort models that can from one side reduce the energy consumption of typical office buildings in hot climates (cooling dominated) while on the other side ensuring indoor thermal comfort. Indeed, studies that address energy efficiency are many, however it is in most cases applied to temperate or cold climates and barely explored for hot climates. The objective of this paper is to (1) combine several comfort models for a net zero energy building in hot climates, (2) select the comfort model that shows the optimal comfort quality of indoor environment and (3) compare the building's annual energy consumption for each used comfort model. To respond to our research problems, a methodology has been established, which goes through several phases. First identifying the different comfort models comfortable to use in hot climates (ISO 7730 / EN 15251 / adaptive ASHRAE / Givoni), secondly selecting a typical validated office building model as a reference building and finally selecting representative cities in the Mediterranean arid and hot climate (Algiers / Sicily / Cairo / Dubai). The study used building performance simulation to generate the different results on the energy consumption and the operative temperatures of the different models of comfort in each city. The paper ultimately identifies the fit to purpose comfort models for a medium size net zero energy office building in hot climates. The paper presents a comparison that can help building professional to identify the most appropriate comfort model that allows optimizing energy consumption, ensuring thermal comfort for robust perfromnce of net zero energy buildings in hot climates. [less ▲]

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See detailCarbon dioxide evasion from the Seine River: Drivers analysis and spatiotemporal reconstruction
Marescaux, A; Thieu, v; Borges, Alberto ULg et al

Conference (2017, February 26)

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See detailMethylglyoxal-induced carbonyl stress: perspectives of a new anti-GBM therapy
Nokin, Marie-Julie ULg

Conference (2017, February 24)

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See detailL’imprimerie à Bruxelles sous les archiducs Albert et Isabelle (1598-1633)
Adam, Renaud ULg

Conference (2017, February 23)

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See detailDécoder les verrous d’apprentissage d’une discipline
Verpoorten, Dominique ULg; Devyver, Julie ULg; Duchâteau, Dominique ULg et al

Conference (2017, February 21)

L’ULg a conduit une expérience pilote avec quelques enseignants. Elle vise à estimer le potentiel didactique et pédagogique d’un travail sur les « verrous d’apprentissage » (traduction délibérément ... [more ▼]

L’ULg a conduit une expérience pilote avec quelques enseignants. Elle vise à estimer le potentiel didactique et pédagogique d’un travail sur les « verrous d’apprentissage » (traduction délibérément adaptée de « bottleneck ») pour lutter contre l’échec, ou plutôt pour relever le défi de l’intégration intellectuelle du plus grand nombre. [less ▲]

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See detailAncient Egyptian philology: The digital turn. Current projects and future perspectives for the study of Ancient Egyptian texts
Polis, Stéphane ULg; Razanajao, Vincent ULg

Conference (2017, February 21)

Use of Information Technologies in Egyptology can be traced back to the early 1960s, when first efforts were made in documenting Meroitic scripts or emblematic corpora such as the Pyramid Texts. With the ... [more ▼]

Use of Information Technologies in Egyptology can be traced back to the early 1960s, when first efforts were made in documenting Meroitic scripts or emblematic corpora such as the Pyramid Texts. With the rise of the Digital Humanities in the mid-2000s, many new academic projects that implement IT solutions not only as a way to manage and present data, but also to produce, process and analyse the material, have come to light in the field. The aim of this paper is to give a survey of current digital projects related to the study of ancient Egyptian and Coptic texts. Our goal is not to be exhaustive, but to discuss the methods and tools that are being used and to describe the variety of scholarly practices. The first set of projects to be examined are those related to digital text editions and annotated corpora (including the types of representation format). Second, the question of how to handle the complex writing systems of Ancient Egypt will be addressed by looking at projects that focus on encoding (Manuel de Codage vs Unicode), on establishing hieroglyphic sign-lists (the Thot-Sign-List), on palaeographical databases and on ways to OCRize original texts efficiently. The issue of interoperability and data sharing will then be investigated through a presentation of several related projects working on a XML/TEI interchange format as well as on digital resources for enabling a Linked Open Data approach to the ancient Egyptian written material (http://thot.philo.ulg.ac.be/). Finally, we will argue in favour of a coherent data model so that encoding of data and metadata is done in the most effective way. [less ▲]

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See detailA Raster SOLAP Designed for the Emergency Services of Brussels Agglomeration
Kasprzyk, Jean-Paul ULg; Donnay, Jean-Paul ULg

in CLOUD COMPUTING 2017 - The Eighth International Conference on Cloud Computing, GRIDs, and Virtualization (2017, February 20)

In order to quickly reach incident locations, emergency services have to fairly distribute their resources on the territory. This distribution is based on an analysis which depends on heterogeneous ... [more ▼]

In order to quickly reach incident locations, emergency services have to fairly distribute their resources on the territory. This distribution is based on an analysis which depends on heterogeneous spatial data like past interventions (recurring risk), specific geographical places (sporadic risk), road network or socio-economic variables. On the other hand, Spatial Online Analytical Processing (SOLAP) tools are designed for the collection and the analysis of large spatial data sets. In this study, an original raster SOLAP model is implemented for emergency services of Brussels agglomeration. It allows decision-makers to freely generate risk maps (continuous fields), depending on several dimensions (time, intervention type, risk type, etc.), and to compare them with the accessibility of firefighters and ambulances. Simulations can also be performed on resources locations to see their impact on the main accessibility. [less ▲]

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See detailHTA et cholestérol : prise en charge intégrée - Cas cliniques
Krzesinski, Jean-Marie ULg

Conference (2017, February 18)

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See detailLe remembrement-relotissement en Wallonie et aux Pays-Bas : est-il possible de réveiller la Belle Endormie ?
Dethier, Perrine ULg; Halleux, Jean-Marie ULg

Conference (2017, February 17)

Le dispositif du remembrement-relotissement, aussi appelé « Association Foncière Urbaine » en France, est un outil foncier qui permet de réaménager le maillage parcellaire et les espaces publics. Il a ... [more ▼]

Le dispositif du remembrement-relotissement, aussi appelé « Association Foncière Urbaine » en France, est un outil foncier qui permet de réaménager le maillage parcellaire et les espaces publics. Il a pour finalité de matérialiser un projet urbain et il est associé au transfert à une structure de copropriété des droits de propriété relatifs aux terrains nécessaires à la réalisation du projet en question. Il revient ensuite à cette structure de copropriété de gérer le développement du périmètre. À l’issue de l’aménagement, les propriétaires sont rétribués proportionnellement à la valeur de leurs apports fonciers respectifs. Le remembrement-relotissement est considérée comme une « Belle endormie » de l’aménagement . En effet, alors que ce dispositif présente de nombreux avantages (mobilisation du foncier à faible coût, développement de projets intégrés…), il n’est que très rarement appliqué sur le terrain . C’est dans ce cadre que se situe notre proposition, dont l’objectif est de chercher à comprendre les raisons qui limitent l’usage de cette procédure ainsi que les leviers susceptibles d’enfin banaliser sa pratique. Notre intervention sera structurée en trois parties. En première partie, nous développerons les résultats d’une analyse ayant cherché à comprendre la non-utilisation du dispositif au sein du contexte wallon . Ce travail a mis en avant que le remembrement-relotissement souffre d’une mauvaise image auprès des experts wallons de l’aménagement du territoire. Le problème fondamental réside dans la faible faisabilité liée à l’incapacité de mobiliser de concert un nombre suffisamment élevé de propriétaires. La seconde partie de notre intervention sera consacrée à la situation néerlandaise. Aux Pays-Bas, le remembrement-relotissement n’est pas non plus un outil fréquemment utilisé, ce qui s’explique par la tradition de production foncière publique. En effet, il est inutile de chercher à travailler avec les propriétaires lorsque les collectivités locales sont directement à la manœuvre pour mettre en place les projets de développement. Pour autant, en raison de la crise du modèle néerlandais de la production foncière publique, le remembrement-relotissement est aujourd’hui considéré par les autorités néerlandaises comme un outil très important afin de continuer à contrôler les montages opérationnels tout en limitant l’implication financière des collectivités. Il ressort de la comparaison entre les Pays-Bas et le Wallonie que le différentiel de confiance entre acteurs est une explication fondamentale de l’opposition entre les deux contextes. Dans ce cadre, la troisième partie de notre intervention rendra compte d’une recherche en cours qui vise à objectiver l’impact des cultures d’aménagement sur les montages opérationnels. Ce projet, qui s’appuie sur le champ de l’économie comportementale , vise en particulier à traiter des thématiques de l’aversion face aux risques et de l’importance de la confiance dans le développement des partenariats et des coopérations. [less ▲]

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See detailLevinas et les limites de la phénoménologie
Boccaccini, Federico ULg

Conference (2017, February 17)

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See detailÉtudier un genre littéraire en Égypte Ancienne : approche(s) et méthode
Motte, Aurore ULg

Conference (2017, February 16)

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See detailStuttered and non-stuttered disfluencies in normally fluent, French-speaking preschool children
Leclercq, Anne-Lise ULg; Moyse, Astrid

Conference (2017, February 16)

The criterion of 3% of stuttered disfluencies – (part-)word repetitions, sound prolongations and blocks – is often suggested to diagnose the stuttering in children (e.g., Boey et al., 2007; Yairi ... [more ▼]

The criterion of 3% of stuttered disfluencies – (part-)word repetitions, sound prolongations and blocks – is often suggested to diagnose the stuttering in children (e.g., Boey et al., 2007; Yairi & Ambrose, 2005). There is a long-lasting debate among scholars about the relevance of considering monosyllabic word repetitions as stuttered disfluencies, given their high frequency in typically developing children (e.g., Howell, 2013; Wingate, 2001). Yet, these are the prime characteristics that prompt identification of early stuttering by parents (Yairi & Ambrose, 2013). Nevertheless, very few normative data exist concerning the disfluencies occurring in the speech of normally fluent children (Tumanova et al., 2014), and none exist in French. The aim of this study is to examine the need for reference data in French in order to distinguish typical developmental disfluency from stuttering. We used the CHAT transcription system and the coding conventions of FluencyBank to transcribe and analyse the speech disfluencies of twenty monolingual, French speaking children who do not stutter, aged 4 years. FluencyBank (Bernstein-Ratner & MacWhinney) is a shared database for the study of the development of fluency in both normal and disordered populations. It is a project of Talkbank that seeks to archive and facilitate sharing of data relevant to fluency research. [less ▲]

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See detailImpact of poplar trees on the soil water dynamics of a maize field in West-Flanders
Coussement, Tom; Janssens, Pieter; Elsen, Annemie et al

Conference (2017, February 15)

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See detailBest Practices for NZEB design in Mixed & Cooling Dominated Climates
Attia, Shady ULg

in HARPUTLUGİL, Timuçin (Ed.) Symposium for Improving Energy Efficiency in Buildings Project (2017, February 14)

High performance buildings including net zero energy buildings (NZEB) are facing difficulty to become market mainstream in warm and hot climates. Beside the economic there are serious technical and design ... [more ▼]

High performance buildings including net zero energy buildings (NZEB) are facing difficulty to become market mainstream in warm and hot climates. Beside the economic there are serious technical and design challenges that hampers design teams design, construct and operate NZEB in mixed and cooling dominated climates. There is a difficulty to make the Passive House standard cross the heating dominated climatic zones in Northern and Central Europe to get implemented in mixed or cooling dominated climates as an ultra-energy efficient building concept. There is a need for setting new climate adaptive energy efficiency target metrics for NZEBs in warm and hot climates. This paper presents guidance and recommendations on the necessary performance target metrics for NZEBs and makes them explicit. Results are based on cross analysis of several case studies, presenting an overview of challenges and providing recommendations based on available empirical evidence to further lower those barriers Worldwide with a focus on the European construction sector. By defining the performance thresholds for NZEBs including the metrics we offer design team the possibility of verification and design assessment during early design decision making phases to instil a kind of practical, evidence based and quantifiable guidance for high performance buildings and in particular NZEBs. [less ▲]

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See detailMulti-evaporator air-conditioning system
Gillet, Thomas ULg; Lemort, Vincent ULg; Andres, Emmanuelle et al

Conference (2017, February 14)

Regulation in terms of greenhouse gas emissions becomes more and more stringent and the fuel consumption targets decrease. In order to meet these demands, vehicle electrification has increased over the ... [more ▼]

Regulation in terms of greenhouse gas emissions becomes more and more stringent and the fuel consumption targets decrease. In order to meet these demands, vehicle electrification has increased over the last decade. With the arrival of plug-in hybrids and battery electric vehicles, efficient battery cooling system becomes a necessity and has to be integrated into the vehicle thermal management. One of the possibility is to integrate a chiller in the air conditioning system for extreme operating points. Moreover, this kind of system can be dedicated to luxury or large passenger cars for which a secondary evaporator is present to guarantee the comfort for rear passengers. The main challenge of this air-conditioning architecture is to maintain simultaneously the cabin thermal comfort via one or two evaporators on one hand and to maintain the battery cells in an ideal temperature range on the other hand. [less ▲]

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