References of "Scientific congresses and symposiums"
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See detailBIOCONTROL PROPERTIES OF RECIRCULATING AQUACULTURE WATER AGAINST HYDROPONIC ROOT PATHOGENS
Stouvenakers, Gilles ULiege; Massart, Sébastien ULiege; Jijakli, Haissam ULiege

Conference (2017, October 18)

Integrated recirculated systems combining aquaculture and hydroponic, known as aquaponic systems, are today more and more studied. However one critical management point is still unclear, namely plant pest ... [more ▼]

Integrated recirculated systems combining aquaculture and hydroponic, known as aquaponic systems, are today more and more studied. However one critical management point is still unclear, namely plant pest management. In aquaponics, diseases found in the system are commonly the same than in hydroponics. Root pathogens and more specially oomycetes fungi responsible of root rot are among the most problematic due to their capacity of dispersion linked to zoospores production. On the other hand, compared with hydroponics, aquaponic plants production can give similar yields with less mineral nutrients concentration and even better yields for equivalent concentration in the nutritive solution (Pantanella et al., 2010; Delaide et al., 2016; Saha et al., 2016; Suhl et al., 2016). Furthermore one article opens the hypothesis of an in vitro protective activity of fish effluents versus plant pathogens (Gravel et al., 2015). Both phenomena could be linked to microorganisms or compounds present in fish water. Assumptions that don’t seem aberrant in light of suppressive action already observed in hydroponic systems (Postma et al., 2008). In addition, microorganisms potentially involving in this action could be richer because of organic compounds in aquaponic water. To confirm these observations, in vitro and in vivo experimentations have been made on the ability of recirculating aquaculture water to procure a plant protection effect towards Pythium aphanidermatum (Edson) Fitzp, an oomycetes pathogen. Firsts in vitro results show a significant decrease of mycelium production when 25% of fish water is present in a V8 CaCO3 broth. But no difference was made between the control and the broth containing 25% of 0,2 µm filtrated fish water. These finding highlight a direct microbial antagonist activity of recirculating aquaculture water against P. aphanidermatum. However dissolved compounds don’t display a direct action on this pathogen but biostimulation or elicitation effect on plants can’t be excluded. [less ▲]

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See detailTradition des textes épiques et sacré
Henrard, Nadine ULiege

Conference (2017, October 18)

Dans le manuscrit nouvelles acquisitions françaises 4232 de la BnF, qui est l’unique témoin le conserver, le Daurel et Beton, précède un Mystère de la Passion copié à sa suite directe sur le même folio ... [more ▼]

Dans le manuscrit nouvelles acquisitions françaises 4232 de la BnF, qui est l’unique témoin le conserver, le Daurel et Beton, précède un Mystère de la Passion copié à sa suite directe sur le même folio. La succession de ces deux textes si différents pose question, et elle ouvre la porte à une nouvelle interprétation de la figure de Beuve de Hantone, qui est un des protagonistes de l’histoire. Partant de cet exemple, la communication cherchera à explorer les contacts que les textes épiques entretiendraient au sein des manuscrits composites avec d’autres œuvres liées d’une quelconque façon à la sphère sacré, en s’efforçant de cerner les motivations qui président à de tels assemblages codicologiques et les parcours de lecture que ceux-ci peuvent éventuellement induire. [less ▲]

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See detailMRI-based mapping of the dorsal premotor cortex (PMd)
Genon, Sarah ULiege; Eickhoff, Simon

Conference (2017, October 18)

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See detailAQUAPONIC SLUDGE DIGESTION FOR ORGANIC REDUCTION AND NUTRIENT REMINERALIZATION IN UASB REACTOR.
Delaide, Boris ULiege

Conference (2017, October 18)

These first results on aquaponic sludge digestion are promising and highlight the interest to treat sludge directly onsite in order to reduce aquaponic system wastes and thus its impact on the environment ... [more ▼]

These first results on aquaponic sludge digestion are promising and highlight the interest to treat sludge directly onsite in order to reduce aquaponic system wastes and thus its impact on the environment and at the same time increase plant yield. [less ▲]

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See detailCases en cut-up: une lecture grammatextuelle de Last Look de Charles Burns
Crucifix, Benoît ULiege

Conference (2017, October 18)

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See detailNew Diva capabilities for climatologies
Barth, Alexander ULiege; Troupin, Charles ULiege; Watelet, Sylvain ULiege et al

Conference (2017, October 17)

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See detailProgress with analysis of DIVA as cloud service
Barth, Alexander ULiege; Troupin, Charles ULiege; Watelet, Sylvain ULiege et al

Conference (2017, October 16)

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See detailPRP et tendinopathies
Kaux, Jean-François ULiege

Conference (2017, October 14)

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See detailQuality assessment of marketed eggs in Hanoi (Vietnam)
Moula, Nassim ULiege; Luc, Do Duc; Bo, H. X. et al

Poster (2017, October 13)

Poultry farming is the first sector of livestock that has been industrialized. The poultry sector plays an important role in the GDP of Vietnam. It is the second largest livestock after the pig livestock ... [more ▼]

Poultry farming is the first sector of livestock that has been industrialized. The poultry sector plays an important role in the GDP of Vietnam. It is the second largest livestock after the pig livestock. The production and consumption of eggs in Vietnam is estimated as 5.64 billion and 102.6 eggs per person per year respectively. The aim of this study was to assess the quality of eggs in relation to the chicken breed and different marketing channels in Hanoi, Vietnam. In total, 431 chicken eggs were purchased from four different marketing channels in Hanoi, including households (89 eggs), supermarkets (152 eggs), public markets (130 eggs) and small grocery stores (50 eggs). Out of the 431 above-mentioned eggs, 119 eggs came from the commercial chicken breeds and 312 eggs from traditional local breeds. The quality of eggs for a consumer is represented by its cleanliness, nutritional quality, freshness, and price. A series of measurements is carried out just after their purchase. According to the breed and the marketing channel, highly significant differences (P <0.05) were found in the freshness of the eggs (Haugh units), egg prices, eggs weight, egg shell, the white and the yolk of the egg. Though the chicken breed and marketing channels do not significantly affect (P> 0.05) the freshness of the eggs, however, they have a significant effect (P <0.05) on the size of the eggs marketed in Hanoi. The results of this study show an important diversity in marketing channels and marketed eggs in Hanoi. [less ▲]

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See detailInventory of Beekeeping in the Algerian north (Tizi-ouzou and Bejaia)
Yahi, Krimou; Touazi, Leghel; Kaidi, Rachid et al

Poster (2017, October 13)

The objective of this study is to make an inventory of the honey production in the counties of Bejaia and Tizi-Ouzou in northeastern Algeria. To achieve this, a survey was carried out on 31 beekeepers (14 ... [more ▼]

The objective of this study is to make an inventory of the honey production in the counties of Bejaia and Tizi-Ouzou in northeastern Algeria. To achieve this, a survey was carried out on 31 beekeepers (14 in Bejaia and 17 in Tizi-Ouzou). The survey shows a social, cultural and religious role for 61.29% of the beekeepers. The beekeeping is primarily held by men (93.55%). It is the basic source of income for 64.52% of the respondents. The average age of the beekeepers is 42.90years (Min-Max: 28-67 years, Median: 40.5 years). The main products of the hive are honey (100%), swarms (16.13%), royal jelly (9.68%) and propolis (9.68%). The average honey production per hive is 7.70kg (Min-Max: 0.4-15kg hives, Median: 10kg). The average number of hives per beekeeper is 42.20 hives (Min-Max: 3-300 hives, Median: 17.50 hives). The average selling price of one kg of honey is 4000.00 DA / kg (Min-Max: 2000-5000DA; Median: 4000DA). The phenotype of the bee reported by 74.19% of the surveys is of small size with a long body and dark pigmentation corresponding to the breed “Apis mellifera intermissa”. Two apiculturists described another phenotype corresponding to the “Apis mellifera major”. The factors behind the motivations for beekeeping are consumption of honey (100%), income generation (90.32%), hobby (58.06%) and conservation of biodiversity (22.58%). The multiple constraints associated with several diseases, notably Varroase (mentioned by 80.65% of beekeepers), cause difficulties for the breeders. Thus they cannot profit maximum from beekeeping. Other constraints which were reported are; forest fires (35.48%), wasps (32.26%), absence of beekeeping professionals or technicians (29.03%), harsh and cold winters with snow (19.35%), high density of hives in the region (16.13%) and uncontrolled spreading of pesticides and crop protection products at farms (12.90%). The economic situation of the Algerian beekeepers can be optimized by improving the production potential of the local bees. [less ▲]

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See detailMédium et discours scientifique. La chronique comme genre de la recherche ?
Mayeur, Ingrid ULiege

Conference (2017, October 13)

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See detailCyclostratigraphic calibration of the Late Devonian time scale
Pas, Damien ULiege; Hinnov, Linda; Day, James E. (Day) et al

in 33 rd INTERNATIONAL MEETING OF SEDIMENTOLOGY, 16ème CONGRÈS FRANÇAIS DE SÉDIMENTOLOGIE (2017, October 13)

The Late Devonian period was affected by major, irreversible changes including two of the most severe biodiversity crises in Earth’s history, the so-called Kellwasser and Hangenberg Events (respectively ... [more ▼]

The Late Devonian period was affected by major, irreversible changes including two of the most severe biodiversity crises in Earth’s history, the so-called Kellwasser and Hangenberg Events (respectively at the Frasnian – Famennian and the Famennian – Carboniferous boundaries). Currently, hypotheses for the Late Devonian extinctions include sea-level fluctuations and regression, climate cooling, ocean anoxia, massive volcanism and/or bolide impact. Unfortunately, testing these hypotheses is impaired by a lack of sufficient temporal resolution in paleobiological, tectonic and proxy climate records. Recent advances in astronomical dating have improved the accuracy of the Frasnian time scale and part of the Famennian (De Vleeschouwer et al., 2012, 2013). However, the time duration of the Famennian stage remains poorly constrained even though this is the key to understanding cause-and-effect relationships of the Late Devonian greenhouse–icehouse transition and the onset of the end Famennian glaciation that ultimately led to the Hangenberg Event at the Devonian–Carboniferous boundary. During the Late Devonian an epieric sea in mid-continent North America occupied the Illinois Basin onto which a Late Frasnian – Early Carboniferous sequence of deep-shelf deposits was archived. A complete record of this sequence, mainly composed of marl, organic-rich shale, silty-shale and carbonate, is captured in three overlapping cores stored in the Iowa Geological Survey (H-30, Sullivan Slough and H-32). H-30 records the Frasnian-Famennian boundary, the Sullivan Slough covers almost all the Famennian (middle triangularis-upper expansa conodont zones) and H-32 spans the junction between the uppermost Famennian and lowermost Carboniferous. To have the best chance of capturing Milankovitch cycles (long- and short-eccentricity cycles as well as obliquity and precession), 2200 rock samples were collected at 5-cm intervals across the entire sequence. Magnetic susceptibility (MS) was measured on each sample and the preservation of paleoenvironmental/climatic information into the signal was verified through geochemical analyses (Ti, Al, Zr by XRF) and magnetic measurements (low temperature magnetic susceptibility and IRM acquisitions). Correlation and overlap between each core was made using available conodont biostratigraphy and then refined by comparing the trends in the MS and δ13C signals for critical intervals. To estimate the duration of the Famennian stage we applied multiple techniques on the MS signal (multitaper method, evolutive harmonic analysis and adaptive-weighted harmonic F-test). By combining these techniques, we identified highly stable 405-kyr cycles across the Sullivan Slough and the H-32 cores. 405-kyr cycles were not observed in H-30, but 100-kyr cycles were identified. A preliminary estimate of the duration for the Famennian stage using the 405-kyr cycle as chronometer constrains the duration of the Famennian stage to 13 ± 0.4 Myr with an average sedimentation rate of 0.5 cm/kyr across the sequence. [less ▲]

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See detailLes francophones de Belgique et le voyage du général de Gaulle au Québec (1967)
Lanneau, Catherine ULiege

Conference (2017, October 13)

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See detailLa mort en images. Le cinéma et les fictions du trépas
Tomasovic, Dick ULiege

Conference (2017, October 13)

Approche historique et anthropologique de la représentation de la mort au cinéma.

Detailed reference viewed: 10 (0 ULiège)
See detailRab guanine nucleotide exchange factor 1 (Rabgef1) restricts intestinal inflammation by limiting pro-inflammatory signals in Intestinal Epithelial Cells (IECs)
El Abbas, Sophie ULiege; Beguin, Charline ULiege; Schyns, Joey ULiege et al

in Proceedings: 4th FARAH-DAY (2017, October 13)

Rab guanine nucleotide exchange factor (GEF-)1 (Rabgef1), a multifunctional protein whose in vivo functions remained unknown until recently, is highly expressed in mouse and human epithelial cells. The ... [more ▼]

Rab guanine nucleotide exchange factor (GEF-)1 (Rabgef1), a multifunctional protein whose in vivo functions remained unknown until recently, is highly expressed in mouse and human epithelial cells. The aim of this study is to investigate the role of Rabgef1 in intestinal epithelial cells (IECs) and intestinal homeostasis in mice. We performed conditional deletion of Rabgef1 gene using the cre-lox system to obtain mice lacking Rabgef1 specifically in IECs (Rabgef1IEC-KO), under the wild-type (WT) or the colitis-prone Interleukin-10 (Il-10)-deficient background. In addition, we used the CRISPR-Cas9 technology to obtain a murine IEC line deficient in Rabgef1. Rabgef1IEC-KO mice under the WT background did not develop spontaneous intestinal abnormalities but exhibited an altered intestinal microbial composition associated with minor changes in IEC pro-inflammatory gene expression profile. Moreover, Rabgef1IEC-KO mice exhibited an increased susceptibility to inflammation in a dextran sodium sulfate (DSS)-induced model of colitis under the WT background, as well as in a constitutive model of colitis under the Il-10-¬deficient background. In vitro, we showed that mouse IECs lacking Rabgef1 significantly overexpressed several pro-inflammatory cytokines and chemokines as compared to control cells. Taken together, these results support that Rabgef1 acts as a regulator of intestinal homeostasis and inflammation, and that dysregulated Rabgef1 expression could contribute to intestinal barrier dysfunction in inflammatory conditions of the gut. [less ▲]

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See detailComparison of the effects of Opuntia ficus-indica powder on growth performance and serum parameters of the Broiler Chicken in Algeria
Moula, Nassim ULiege; Humbel, Maïlis ULiege; Leterrier, Mélanie ULiege et al

Poster (2017, October 13)

In Algeria, the ingredients used in the broiler feed are exclusively imported from abroad, which affects negatively the production cost of the chicken meat and its sale price in the market at national ... [more ▼]

In Algeria, the ingredients used in the broiler feed are exclusively imported from abroad, which affects negatively the production cost of the chicken meat and its sale price in the market at national level. Because of the wide diversity in soil and climate, Algeria has a substantial number of plants which can be used in animal feed. This work is part of the valuation of the feed potential of the barbaric fig tree, widely present in the Algerian rural landscape, for the broiler chicken. The Opuntia ficus-indica is known for its edible fruits and for use of its fleshy leaves or “racquets” as fodder especially during periods of drought. It is also used to control the water and wind erosion as well as for the protection and improvement of soil fertility in arid and semi-arid regions. The aim of this study was to measure the effects of Opuntia ficus-indica powder on growth performance, serum composition and carcass yield of broiler chickens. The experiments were performed in a private poultry farm in the Chemini region (Wilaya de Bejaia). In this study, 120 Ross-308 day-old male chicks were monitored. They were divided in 3 groups (Group 1, 2 and 3) according to the specific diet (4 x 10 chicks / group). The group 1 was offered commercial feed. The group 2 and group 3 were offered the same commercial feed as group 1 but 5% and 10% of the commercial feed was replaced by the Opuntia ficus-indica powder respectively. The Opuntia ficus-indica powder did not show any negative effect (p>0.05) on the final body-weight, average daily gain and carcass yield. However, it decreased (p<0.05) the biochemical parameters -blood concentration- (plasma glucose, uremia, cholesterol and triglycerides). In conclusion, the Opuntia ficus-indica powder has the potential to be used in poultry feed to reduce the cost of broiler feed in Algeria [less ▲]

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See detailA case of splenic myelolipoma in a German Shepherd dog
Dernier, Adrienne ULiege; Bayrou, Calixte ULiege; Desmecht, Daniel ULiege et al

Poster (2017, October 13)

An older neutered female German Shepherd dog was referred to our Department for necropsic evaluation after euthanasia for chronic renal insufficiency. Apart from chronic renal lesions and gastrointestinal ... [more ▼]

An older neutered female German Shepherd dog was referred to our Department for necropsic evaluation after euthanasia for chronic renal insufficiency. Apart from chronic renal lesions and gastrointestinal ulcerations, the macroscopic examination showed multiple off-white multifocal splenic nodules. Histologic examination revealed multiple, well-demarcated, unencapsulated masses of hematopoietic elements admixed with mature adipose tissue, consistent with a diagnosis of myelolipoma. This benign tumor is rarely reported in dogs in the literature and is more often observed in the form of a single encapsulated nodule. The other possible sites where these tumors can be seen are adrenal glands and organs retaining hematopoietic activity. Although several hypotheses have been proposed, the exact origin of myelolipoma still remain unknown [less ▲]

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See detailClinical and haematological alterations in foot and mouth disease virus naturally-infected domestic water buffaloes in Vietnam
Dam Van Phai, ULiege; BUI TRAN ANH, Dao, ; Desmecht, Daniel ULiege

Poster (2017, October 13)

Foot and mouth disease (FMD) has been one of the most important epizootic diseases in several cloven-hoofed animals including buffaloes, causing severe economic losses in Vietnam. This study aimed at ... [more ▼]

Foot and mouth disease (FMD) has been one of the most important epizootic diseases in several cloven-hoofed animals including buffaloes, causing severe economic losses in Vietnam. This study aimed at observing clinical indicators, physiological parameters, haematological and blood chemistry values of 30 buffaloes naturally infected with FMD virus (FMDV). The study was undertaken from January 2015 to February 2016 in Hanoi, Vietnam. Results show that buffaloes infected with FMDV displayed significantly higher fever, increased respiratory rate and increased heart frequency compared to healthy animals. Moreover, FMDV-infected animals always showed high fever and vesicular stomatitis, often showed edging nail congestive inflammation and, sometimes only, blisters on the nipple. Haematological indicators showed that FMDV-infected buffaloes were dehydrated (increased total protein). Besides, infected animals also underwent anaemia as mean corpuscular haemoglobin and mean corpuscular haemoglobin concentrations were plummeted. Total white blood cell count plummeted too, especially the number and proportion of neutrophils. Meanwhile, the number and proportion of lymphocytes sharply increased compared to healthy animals. Infected buffaloes also displayed signs of liver and heart damages as judged by an increase in concentration of AST and ALT, while there was not renal damage since creatinine concentration remained stable [less ▲]

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See detailElectrode materials for Li/Na-ion batteries: Improving electrochemical performance through carbon addition during synthesis
Mahmoud, Abdelfattah ULiege; Karegeya, Claude; Eshraghi, Nicolas ULiege et al

Poster (2017, October 12)

Lithium-ion batteries have been widely applied as a power source for portable and stationary energy storage systems. Na-ion batteries are considered to be an alternative to Li-ion batteries owing to the ... [more ▼]

Lithium-ion batteries have been widely applied as a power source for portable and stationary energy storage systems. Na-ion batteries are considered to be an alternative to Li-ion batteries owing to the natural abundance of sodium. New electrode materials are required to increase the energy density of Li/Na-ion batteries. In this study, we show that the addition of the carbon sources during the synthesis leads to control the particles size and morphology and improve their conductivity properties that enhance the electrochemical performance [1-5]. In order to study the effect of the carbon on the structural, morphological and electrochemical properties of the prepared materials by a spray-drying [1-3] or hydrothermal methods [4, 5]. The crystal and local structure were analyzed by XRD and Mössbauer spectroscopy. The morphological properties were characterized by SEM and TEM. The carbon content was determined by TG/TDA and carbon analyzer. The electrochemical properties were studied by impedance spectroscopy and galvanostatic cycling in lithium cells. Finally, the reaction mechanism during cycling was investigated using operando XRD technique. 1- A. Mahmoud, S. Caes, M. Brisbois, R.P. Hermann, L. Berardo, A. Schrijnemakers, C. Malherbe, G. Eppe, R. Cloots, B. Vertruyen, F. Boschini, Spray-drying as a tool to disperse conductive carbon inside Na2FePO4F particles by addition of carbon black or carbon nanotubes to the precursor solution, J. Solid State Electrochem. (2017) 1–10. 2- N. Eshraghi, S. Caes, A. Mahmoud, R. Cloots, B. Vertruyen, F. Boschini, Sodium vanadium (III) fluorophosphate/carbon nanotubes composite (NVPF/CNT) prepared by spray-drying: good electrochemical performance thanks to well-dispersed CNT network within NVPF particles, Electrochim. Acta, 228 (2017) 319–324. 3- M. Brisbois, S. Caes, M-T. Sougrati, B. Vertruyen, A. Schrijnemakers, R. Cloots, N. Eshraghi, R-P. Hermann, A. Mahmoud, F. Boschini, Na2FePO4 F/multi-walled carbon nanotubes for lithium-ion batteries: Operando Mössbauer study of spray-dried composites, Solar Energy Materials & Solar Cells 148 (2016) 67-72. 4- C. Karegeya, A. Mahmoud, B. Vertruyen, F. Hatert, R.P. Hermann, R. Cloots, F. Boschini, One-step hydrothermal synthesis and electrochemical performance of sodium-manganese-iron phosphate as cathode material for Li-ion batteries, J. Solid State Chem.253 (2017) 389–397. 5- C. Karegeya, A. Mahmoud, R. Cloots, B. Vertruyen, F. Boschini, Hydrothermal synthesis in presence of carbon black: Particle-size reduction of iron hydroxyl phosphate hydrate for Li-ion battery, Electrochimica Acta. Electrochim. Acta 250 (2017) 49–58. [less ▲]

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See detailL’auto-évaluation dans l’application des exceptions en droit économique de l’UE : plusieurs acteurs, nouveaux risques ?
Van Cleynenbreugel, Pieter ULiege

Conference (2017, October 12)

In this presentation, I will analyse the role of self-evaluation techniques in EU internal market and competition law.

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See detailPrévention et résolution des conflits
Caprasse, Olivier ULiege; Léonard, Laura ULiege

in Caprasse, Olivier (Ed.) Joint Ventures : Questions choisies de droit belge et international (2017, October 12)

Detailed reference viewed: 33 (5 ULiège)
See detailMOOC et formation professionnelle : une approche par les capacités
Orianne, Jean-François ULiege

Conference (2017, October 12)

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See detailLe graffiti ou la consubstantialité du médium et de la situation d’énonciation
Mathy, Adrien ULiege

Conference (2017, October 12)

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See detailSaadien Mosaic (Zellige) from historical monuments of Marrakech, Morocco: Degradation state and production technology
El Halim, Mouhssin ULiege; Daoudi, Lahcen; El Ouahabi, Meriam ULiege et al

in Azrour, Mohamed (Ed.) International Symposium on Architectural patrimony and Local building Materials, Abstract Book (2017, October 12)

This study is focused on Saadian ceramics called zellige from the archaeological sites of "El Badi palace" and "Saadian Tombs" (Marrakech, Morocco) dated in late 16th Century and classified as world ... [more ▼]

This study is focused on Saadian ceramics called zellige from the archaeological sites of "El Badi palace" and "Saadian Tombs" (Marrakech, Morocco) dated in late 16th Century and classified as world heritage by UNESCO in 2008. A multi-analytical approach based on optical microscopy, cathodoluminescence, scanning electron microscopy, X-ray fluorescence and X-ray diffraction investigations and re-firing tests on ceramic supports has been used,in order to determineraw materials source, technical manufacturing and firing temperatures used by the Saadian artisans. Production technology, microstructure and the chemical compositionsuggest that the zellige pieces used in the construction of Saadian monuments in Marrakech are either imported from Fez, i.e. the main center of production of the zellige in Morocco, or manufactured locally in Marrakech according to the current standards and procedures in Fez. The calcareous clay raw materialwas used to manufacture these ceramics, but firing temperature was different. Zellige of El Badi palace was fired at a maximum temperature of 700°C in oxidizing atmosphere, while the one of Saadian Tombs was fired in the range 900-950 °C. The low firing temperature for Zellige facilitates the pieces cutting but it is responsible for the poor quality of these materials due to the absence of the vitreous phases. The results provide a scientific support for decision making in future conservation and restoration strategies of historical monumentsacross Morocco. [less ▲]

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See detailSize and Value Matter But Not the Way You Thought
Lambert, Marie ULiege

Conference (2017, October 12)

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See detailSocial ‘tipping points’ under climate/environmental change
Ozer, Pierre ULiege; Koala, Ouango; Clervil, Luc et al

Conference (2017, October 12)

There is growing recognition that climate change has the potential to trigger social ‘tipping points’, potentially involving abrupt (i.e. non-linear) increases in climate damages, even under smooth (i.e ... [more ▼]

There is growing recognition that climate change has the potential to trigger social ‘tipping points’, potentially involving abrupt (i.e. non-linear) increases in climate damages, even under smooth (i.e. linear) climate change. Whilst the notion of a ‘tipping point’ originated in the social sciences, in the last decade or so it has been widely used by climate scientists, referring in particular to strongly self-amplifying (positive feedback) dynamics in parts of the climate system [sensu Lenton et al. 2008]. We argue that reinvigorating the concept of social tipping points has considerable potential to help researchers understand the social impacts of climate change and consider their human consequences. Whilst feedback dynamics can also be important in social systems, here we review a broader phenomenology of social ‘tipping points’ that could give rise to abrupt changes e.g. in climate damages. We focus in particular on migration dynamics as the original example of ‘social tipping’ which can also be affected by climate change. We include the potential for the perception of climate change (as well as the actual experience of it) to trigger ‘social tipping’. We note how a lack of system resilience can increase the likelihood and magnitude of ‘social tipping’ driven by climate change, and scope out the potential for early warning signals of particular types of social tipping. We argue that in the developing world at least there is potential for social tipping points to be triggered by climate change long before potential climate tipping points unfold. Looking ahead, the application of network theory methods to social data provides a rapidly expanding opportunity to monitor and in some cases forewarn of social tipping. [less ▲]

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See detailDonner à voir et à comprendre
Havelange, Carl ULiege

Conference (2017, October 12)

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See detailSedimentary infill at the western tip of the Gulf of Corinth during the last 120 ka: Evidence for an acceleration of the subsidence
Beckers, Arnaud; Hubert, Aurelia ULiege; Beck, Christian et al

Poster (2017, October 12)

The Corinth Rift, Greece, is a young and active continental rift stretching over 150 km between the cities of Patras and Athens, and is partly covered by the sea forming the Gulf of Corinth. The present ... [more ▼]

The Corinth Rift, Greece, is a young and active continental rift stretching over 150 km between the cities of Patras and Athens, and is partly covered by the sea forming the Gulf of Corinth. The present study is focused on the western tip of the Gulf, west of the town of Aigion, where the extension rate measured by GPS is the highest, reaching 14-16 mm/yr. The sediments were investigated using seismic reflection profiling (600 km) to characterize the evolution over the last 120 ka of the sedimentation, subsidence and faulting activity. We combined two lines of evidence, the position of lowstand deltas and isopach maps. The isopach maps were built using two stratigraphic markers could be traced through the seismic grid, the most recent one corresponds to the last post-glacial transgression and the antecedent one to MIS 6 / MIS 5 transgression, at ca. 130 ka. The related isopach maps evidence a spatial change in sedimentary infill along the rift axis probably related to a decrease in activity of the south-dipping faults (i.e. Trizonia/Mornos Faults) that formed the northern edge of the westernmost Corinth Rift in an early stage of the rifting. The different identified lowstand fluvio-deltaic deposits are related to global sea-level lowstands during which the Gulf of Corinth was a lake, whose last reconnection to the Sea occurred around 11.5 ka. Concerning lowstand deltas formed around 11.5 ka, the subsidence rates exceed 3 mm/yr and are maximal under the apex of the Mornos fan-delta (5.0-6.6 mm/yr) and in the hanging wall of the north-dipping Lambiri fault (5.9-7.5 mm/yr). Regarding the anterior lowstand delta, the subsidence was lower ranging from 1 to 2.7 mm/yr. These changes would arise because of the northward migration of the strain toward the north, e.g. the Marathias fault. [less ▲]

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See detailIntramolecular continuous-flow strategy towards methylphenidate (Ritalin) hydrochloride
Gerardy, Romaric ULiege; Winter, Marc; Vizza, Alessandra et al

Poster (2017, October 12)

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See detailLa relation entre professionnel-le-s et familles dans les centres d’éducation et d’accueil des jeunes enfants de 0 à 3 ans : risques et potentialités
Sharmahd, Nima; Pirard, Florence ULiege

Conference (2017, October 11)

La communication questionne les manières de considérer la relation entre les familles et les professionnel-le-s de la petite enfance du point de vue de ces dernièr-e-s. Reconnaitre la qualité de service ... [more ▼]

La communication questionne les manières de considérer la relation entre les familles et les professionnel-le-s de la petite enfance du point de vue de ces dernièr-e-s. Reconnaitre la qualité de service comme un processus contextualisé et objet de négociations entre une série d’acteurs (Dahlberg, Moss, Pence, 2007) au sein d’un « système compétent » (Urban, Vandenbroeck, Peeters, Lazzari, Van Laere, 2011) conduit à souligner l’importance des compétences de négociation dans le chef des professionnel-le-s de l’enfance dans leurs relations avec autrui, en particulier avec les familles dans un contexte de diversité (Pirard, F., Camus, C., Barbier, J. M., forthcoming). Même si les prescrits et les recommandations internationales valorisent un investissement dans le travail avec les familles au sein des institutions d’accueil des jeunes enfants, caractérisé par une double orientation potentiellement en tension visant à la fois un soutien à la parentalité et des démarches coéducatives, force est de constater que sur le terrain, ce travail avec les familles pose souvent question aux professionnel-le-s et peut faire l’objet de significations différentes (Camus, Dehier, Pirard, 2012). Il s’agit de mieux comprendre les difficultés rencontrées par les professionnel-le-s dans leur relation aux familles considérée comme génératrice de risques et de potentialités. La communication offre le regard croisé d'une chercheuse francophone intéressée par les dynamiques co-éducatives mises en place dans les régions centre nord de l'Italie et d’une chercheuse italienne qui a étudié cet objet d’abord dans cette région où la collaboration avec les familles dans la gestion des institutions s’est renforcée depuis de nombreuses années avec des visées communautaires (Sharmahd, 2007), ensuite sur un autre contexte, celui de la Fédération Wallonie Bruxelles où au contraire le travail avec les familles est envisagé de manière essentiellement individualisée et reste encore trop peu développé (Sharmahd, 2009 ; 2016). A partir d’une recherche collaborative comprenant trois entretiens semi structurés avec huit professionnelles de cinq services différents implantés dans une même région (au total 24 auprès), complétés de cinq entretiens semi-structurés avec leur direction, l’analyse des résultats réalisée à partir de codes-catégories spécifiques mettent en évidence deux tensions majeures dans les discours. Les professionnelles mettent en avant une volonté d’ouverture et de souplesse dans leur relation aux familles, mais en même temps elles recherchent une sécurité et dans cette optique, évitent ce qu’elles pourraient considérer comme des prises de risque (être sûr VS ouverture à l’incertitude). Ensuite, elles souffrent d’un manque de reconnaissance, y compris des parents, ce qui peut les conduire à se démarquer de ces derniers par une affirmation de leurs savoirs ou par des pratiques validées par leur institution au travers du projet d’établissement, sans mesurer les effets non désirés d’un tel positionnement professionnel. Ces manières de rechercher une reconnaissance sont en même temps des signes de protection qui peuvent restreindre les possibilités d’autonomie dans l’agir valorisées par ailleurs (être protégé VS être reconnu). Les résultats de cette recherche ouvrent des perspectives pour la recherche et l’action : importance des recherches collaboratives qui impliquent les professionnel-le-s de l’enfance dans l’analyse des résultats, nécessité de cadres d’analyse permettant une approche dialectique de l’objet et une prise en compte des tensions et contradictions dans lesquelles les professionnel-le-s sont pris-es, pistes d’action pour la formation initiale, le développement et l’accompagnement professionnel ainsi que les conditions de travail inscrits dans une approche systémique de la professionnalisation et permettant aux professionnel-le-s de faire face à la gestion des risques et de l’incertitude inhérente à leur activité. [less ▲]

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See detailRelationship between brain activity and ocular movements during wakefulness and drowsiness
François, Clémentine ULiege; Wertz, Jérôme; Verly, Jacques ULiege

Poster (2017, October 11)

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See detailReturn to play after groin injury
Kaux, Jean-François ULiege; Delvaux, François ULiege; LEHANCE, Cédric ULiege et al

Conference (2017, October 10)

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See detailLa remédiation numérique des savoirs critiques : enjeux formels et heuristiques
Provenzano, François ULiege; Lapointe, Olivier; Mayeur, Ingrid ULiege

Conference (2017, October 10)

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See detailA 3000 yr paleoseismological history of the central East Anatolian Fault (Turkey) based on sedimentary record of Hazar Lake
Lamair, Laura ULiege; Hubert, Aurelia ULiege; Hage, Sophie et al

Poster (2017, October 10)

The East Anatolian Fault (EAF) is a major left-lateral strike-slip fault accommodating with the conjugate North Anatolian Fault the westward extrusion of the Anatolian Plate away from the Arabia-Eurasia ... [more ▼]

The East Anatolian Fault (EAF) is a major left-lateral strike-slip fault accommodating with the conjugate North Anatolian Fault the westward extrusion of the Anatolian Plate away from the Arabia-Eurasia collision zone. During the 20th century, the EAF activity was mostly quiestcent with only two events of magnitude greater than 6 recorded (1905 Malatya and the 1971 Bingol earthquakes). Historical seismicity suggests that the EAF is capable of generating earthquakes of magnitude greater than 7. In order to retrace the seismic history of the EAF in its central part, we study Hazar Lake. Hazar Lake is a 20 km long pull-apart basin with a maximum depth of 216 m. Short cores and long sediment cores were collected at four different sites to retrieve a paleoseismological record. Detailed analysis of the sediment cores (e.g. magnetic susceptibility, XRF, XRD, thin sections) were performed to identify sedimentary events. The ages of the sedimentary events were inferred based on a detailed age-depth model combining radiocarbon dating and 137Cs/210Pb. In total, 65 radiocarbon dating were done on bulk sediment and on terrestrial organic matter. The results show that Hazar Lake region was impacted by two fault zones: The East Anatolian Fault (EAF) and the North Anatolian Fault. Based on historical documents, the seismic intensity of each seismic event recorded in Hazar Lake was calculated. Here, we discuss the seismic threshold for earthquake records as well as the seismic recurrence pattern for the EAF over the last 3000 years. [less ▲]

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See detailThe LNQ25 and ELN PVT Metrics Exhibit a Good Sensitivity to Sleep Deprivation and are Independent from the Subject
Latour, Philippe ULiege; Van Droogenbroeck, Marc ULiege

Poster (2017, October 09)

Introduction Performance of people undergoing critical tasks (like driving) may be impaired completely by the lowering of their vigilance level, due to sleep deprivation for instance. This reduction of ... [more ▼]

Introduction Performance of people undergoing critical tasks (like driving) may be impaired completely by the lowering of their vigilance level, due to sleep deprivation for instance. This reduction of performance may be measured by metrics computed from the reaction times (RT) recorded during a 10min Psychomotor Vigilance Test (PVT). Here, we analyze and compare the sensitivity to sleep deprivation and the subject dependent variability of the PVT metrics performance, with a special emphasis on the time interval sizes. Materials and Methods Individuals (22 volunteers; 11 males, 11 females, mean 22.2y., range 19-34 years) follow an uninterrupted 28h sleep deprivation standard PVT protocol during which they achieved two groups of three PVT sessions (in different conditions). The first PVT of each group is in Non-SDP condition (9h30 and 10h30 Day 1) and the second and third PVT of each group are in SDP condition (2h30, 3h30, 10h30 and 11h30 day 2). The subjects fill a sleep journal during the week before the experiment. We checked that they had a normal sleep-wake cycle with no sleep deprivation, jet-lag or shift work and no medication. During the PVT of the first group, the subjects were wearing the glasses of the Phasya’s Drowsimeter. We compute the usual PVT metrics; meanRT, meanRS (Reaction Speed) and LN500 (500ms lapses number). We also compute LNQ25 (adaptive lapses number computed with a subject dependent threshold) and ELN (Expected Lapse Number, computed from a subject-dependent estimation of the lapse probability). Results We use the “Effect Size” (ES, ratio of the mean by the standard deviation of the difference of metrics in the SDP and Non-SDP conditions) to assess the sensitivity to sleep deprivation. For the 10min (resp. 1min, 3min) interval, the ES of LNQ25 and ELN are respectively 1.38 (resp. 0.95, 1.22) and 1.35 (resp. 0.85, 1.14), the ES of meanRS, meanRT and LN500 are 1.23 (resp. 0.91, 1.09), 0.81 (resp. 0.54, 0.68) and 0.85 (resp. 0.63, 0.77). We classify the intervals on which metrics are computed as SDP or non-SDP. We use a fixed threshold for the metrics, independent of the subject. In the ROC curves, the TPR (for a FPR of 10%) assesses the quality of the classification, and then also the subject independence. For the 10min (resp. 1min, 3min) interval, the TPR of LNQ25 and ELN are respectively 0.86 (resp. 0.56, 0.75) and 0.83 (resp. 0.58, 0.75), the TPR of meanRS, meanRT and LN500 are 0.42 (resp. 0.38, 0.41), 0.40 (resp. 0.39, 0.40) and 0.42 (resp. 0.24, 0.30). Conclusions We demonstrate that LNQ25 and ELN enable a quite good classification of the SDP condition for time intervals greater than or equal to 3min, independently of the subject. On the other hand, these metrics provide also a good sensitivity to sleep deprivation. They outperform the usual metrics for both criteria. For time intervals below 3min, the performances degrade first progressively and then much more quickly below 1min. [less ▲]

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See detailPhysico-chemical Approach for Characterising Probiotics: example of High Concentrated Multistrain-Based Formulation
Razafindralambo, Hary ULiege; Delvigne, Frank ULiege; Blecker, Christophe ULiege

Poster (2017, October 09)

Probiotics are receiving today unprecedented growing interests in Europe, Asia, and in the rest of the world. Their applications are not only limited to food and health sectors, but cover also agriculture ... [more ▼]

Probiotics are receiving today unprecedented growing interests in Europe, Asia, and in the rest of the world. Their applications are not only limited to food and health sectors, but cover also agriculture and aquaculture areas. The quality of probiotic products depends on many factors such as, the properties of each individual strain and its proportion in mixed products, the viable probiotic dose, and other selective ingredients like prebiotics and protectant agents incorporated into the formulation. Several strategies are employed for ensuring high product qualities, which can be controlled by different methods and techniques. To date, the physico-chemical approach for characterizing and controlling probiotic qualities and performances appears very attractive, but less exploited. It particularly consists in characterizing probiotic products in terms of thermal, surface and colloidal properties, which could be correlated to probiotic viability and functionalities. In this communication, we report the efficiency of such an approach when applied to a high concentrated multistrain-based formulation which has been shown a metabolic variability impacting on the inflammatory response, depending on the production site. [less ▲]

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See detailAteliers de (dé)construction de jeux vidéo: une question de démocratie culturelle
Hurel, Pierre-Yves ULiege; Verbesselt, Maxime

Conference (2017, October 07)

Entre août et octobre 2016, l’asbl Arts&Publics, en association notamment avec Action Média Jeunes, a organisé un atelier de création de jeux vidéo déconstruisant la théorie du choc des civilisations ... [more ▼]

Entre août et octobre 2016, l’asbl Arts&Publics, en association notamment avec Action Média Jeunes, a organisé un atelier de création de jeux vidéo déconstruisant la théorie du choc des civilisations (Huttington 1997). L’expérience s’est déroulée en trois phases pour un total de 107 heures et a réuni une quinzaine de participants, presque tous néophytes en programmation et pour certains en terme de jeux vidéo. La première phase, pilotée par le philosophe et écrivain Roland De Bodt, a consisté à introduire la thématique, à la discuter et à analyser ses applications vidéoludiques. La deuxième étape était une initiation à l’utilisation du logiciel Construct 2, qui facilite la création de jeux vidéo. Enfin la dernière phase était celle de la réalisation, et s’est déroulée sous forme de game jam. Cet atelier expérimental a abouti à la création de sept prototypes de jeux vidéo (disponibles sur rivesdeurope.org) par les participants. Ces derniers avaient entre 15 et 55 ans et des profils relativement diversifiés : étudiants, travailleurs sociaux, éducateurs, militants politiques, etc. Chaque jeu se veut être l’expression personnelle de ces personnes quant à la thématique centrale. Nous voudrions, dans le cadre de cette communication, exposer et évaluer la méthodologie qui a été expérimentée, à la croisée de l’éducation aux médias et de la médiation culturelle. L’idée était d’inciter les participants de l’atelier à s’approprier des éléments de la culture vidéoludique, en particulier la rhétorique vidéoludique. Dans cette optique, nous avons opéré un balancier constant entre, d’une part, l’analyse d’œuvres à déconstruire, d’autre part, la projection de jeux à construire. Cette méthodologie s’appuie notamment sur un travail de recherche sur la création amateur de jeu vidéo (Hurel 2017) qui met en lumière comment l’appropriation se nourrit de la reproduction et la modification des éléments saillants dans les jeux expérimentés. La démarche exposée consiste ici en la mise en place d’un cadre lâche dans lesquels les participants sont invités à s’exprimer librement sur une thématique, sans être nécessairement eux-mêmes des amateurs de jeux vidéo. Cette expérimentation cherchait à élargir le champ de la culture vidéoludique entendue comme un rapport de force (Shaw 2010) sur plusieurs niveaux et a été conçue comme dispositif favorisant la démocratie culturelle (Chatzimanassis 2013). D’abord, partant du principe qu’il y a lieu de favoriser l’hétérogénéité des personnes ayant accès à la création de jeux vidéo (Anthropy 2012), nous avons ouvert l’atelier à toute personne curieuse. Ensuite, les prototypes créés devaient participer à une double redéfinition performative : ils affirmeraient la capacité d’amateurs à s’emparer du jeu vidéo comme média d’expression citoyenne tout en proposant d’autres points de vue que celui du choc des civilisations. Cette initiative entend donc appuyer la montée en puissance des amateurs (Flichy 2011) dans un cadre qui ne soit pas exclusivement celui d’une convergence entre industries culturelles et publics (Jenkins 2006). En partageant ce retour d’expérience, nous souhaitons enfin appeler les institutions culturelles et les acteurs sociaux à s’approprier le jeu vidéo comme moyen d’expression. Bibliographie Anna Anthropy, Rise of the Videogame Zinesters, Seven Stories Press, 2012. Chatzimanassis Alice, « Démocratisation de la culture et démocratie culturelle à partir de l’exemple québécois », Comité d’histoire du ministère de la Culture et de la Communication, Centre d’histoire de Sciences-Po Paris, La démocratisation culturelle au fil de l’histoire contemporaine, Paris, 2013. Patrice Flichy. Le sacre de l’amateur. Sociologie des passions ordinaires à l’ère numérique, Paris, Seuil, 2010. Samuel Huntington, Le Choc des civilisations, Éditions Odile Jacob, Paris, 1997. Pierre-Yves Hurel, « Le passage du jeu à la création : le cas du jeu vidéo amateur », Sciences du jeu, 7, 2017 (sous presse). Henry Jenkins, La culture de convergence, Paris, Armand Colin, 2013. Adrienne Shaw, « What Is Video Game Culture? Cultural Studies and Game », Games and Culture, 5, pp. 403–24, 2010. [less ▲]

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See detailRuminal function influenced by diet parameters in dairy herds with milk fat drop syndrome in Belgium
Knapp, Emilie ULiege; Sartelet, Arnaud ULiege; Malniece, Aija et al

Poster (2017, October 06)

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See detailAux origines de l'Université de Liège
Lanneau, Catherine ULiege

Conference (2017, October 06)

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See detailDrepakis : Contribution to the management of Sickle cell disease in the city of Kisangani (D.R. Congo)
Marini Djang'Eing'A, Roland ULiege; Batina Agasa, Salomon; Gulbis, Béatrice et al

Conference (2017, October 06)

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See detailA NEW TRIFOCAL DESIGN
Gatinel, Damien; Loicq, Jerôme ULiege

Conference (2017, October 06)

Purpose: Contributions of IOL biomaterial (Abbe #) and diffractive pattern topography on LCA of various types of multifocal IOLs. Methods: The LCAs associated with the different focal points of ... [more ▼]

Purpose: Contributions of IOL biomaterial (Abbe #) and diffractive pattern topography on LCA of various types of multifocal IOLs. Methods: The LCAs associated with the different focal points of diffractive hydrophobic – made of aromatic and/or aliphatic materials – and hydrophilic multifocal IOLs were experimentally determined on an optical bench in RGB conditions (650, 546 and 480 nm). The effects of Abbe number and of the topography of the different diffractive profiles were evaluated. Based on wavelength–dependent MTF through-focus curves, polychromatic behavior of multifocal IOLs was assessed. Results: LCA amplitudes and signs were different for each of the focal points. While far vision LCA was of negative sign and appeared to be controlled by the material Abbe number, the diffractive LCA for near and intermediate visions was independent of IOL material. The diffractive pattern characteristics, which control the closer distance powers, prove to be pivotal in fine-tuning the LCA related to these near and intermediate foci. Conclusions: Diffractive multifocal IOLs show chromatic aberrations with are controlled by the biomaterial Abbe number for its refractive component on the one hand, and by the topography of the diffractive pattern for the second component on the other hand. [less ▲]

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See detailJeu, narration et réflexivité : le rôle de l’avatar
Delbouille, Julie ULiege; Barnabé, Fanny ULiege

Conference (2017, October 06)

Par sa nature même, le jeu entretient avec la réflexivité une parenté certaine. En effet, pour qu’une situation ou un objet soit reconnu comme ludique par les participants, il est nécessaire que ces ... [more ▼]

Par sa nature même, le jeu entretient avec la réflexivité une parenté certaine. En effet, pour qu’une situation ou un objet soit reconnu comme ludique par les participants, il est nécessaire que ces derniers superposent à leur action le message « ceci est un jeu » (Bateson, 1977). L’acte ludique, le « jouer » (Henriot, 1989), constitue donc un procédé de « méta-communication » (Bateson, 1977) supposant une interaction au second degré avec le réel (le joueur « fait comme si » ; Schaeffer, 1999 : 11). Le jeu vidéo n’échappe pas à cette dynamique réflexive, comme en témoigne le nombre important d’œuvres vidéoludiques qui – par le biais de différents outils formels – discourent sur leur propre organisation ludo-narrative, sur leurs possibilités d’utilisation ou sur le médium qui les supporte. Cette parenté entre réflexivité et jeu explique sans doute en partie la fréquence, au sein de ce domaine, des figures transgressant les seuils de la narration. Ainsi, dans les jeux vidéo, les métalepses sont des procédés tout à fait banals et non problématiques. Il n’est pas rare, par exemple, que des personnages fictionnels expliquent les mécaniques ludiques à l’avatar en des termes mêlant la fiction et l’univers référentiel du joueur (comme dans ces exemples issus du jeu Le monde de Nemo : « “(...) tu peux accélérer en appuyant sur la flèche de déplacement (...)”, “(...) tu peux peut-être y arriver en appuyant sur la touche action (...)” » ; Nélide-Mouniapin, 2005 : 245). Plus généralement, tout avatar de jeu vidéo se rapproche de ce que Genette nomme un « opérateur de métalepse » (Genette, 2004 : 110). En faisant se rencontrer un joueur empirique et un personnage fictif, cette « enveloppe pilotable » (Amato et Perény, 2013) assure effectivement une fonction d’embrayeur. Point de passage privilégié vers le monde fictionnel, l’avatar acte continuellement la perte et la reprise du contrôle sur le jeu, interrogeant ainsi le joueur sur sa propre posture – lorsqu’il n’est « ni tout à fait en [lui-même], ni tout à fait à l’écran, mais dans une zone intermédiaire, un entre-deux » (Triclot, 2011 : 19). La fréquence des métalepses ou mises en abyme dans les jeux et la centralité du rôle de l’avatar dans ces procédés réflexifs interrogent la manière dont le jeu vidéo peut construire une narration. En effet, ces figures peuvent être envisagées comme les vecteurs d’une destruction du pouvoir de représentation de l’œuvre, puisqu’elles mettent en pause la construction d’un univers pour faire discourir le jeu sur lui-même. Afin de mettre au jour les mécanismes de ces ruptures des seuils de la fiction et leur fonction dans l’articulation du jeu et de la narration, notre communication analysera ces procédés en puisant des exemples au sein de trois jeux distincts : Portal (Valve Corporation, 2007), ​The Stanley Parable (Galactic Cafe, 2013) et ​INSIDE (Playdead, 2016). Ceux-ci ont effectivement en commun de mettre en abyme le rapport du joueur à la machine par ​ le biais de leurs avatars (et de leur relation respective avec GLaDOS dans ​Portal, avec le​ narrateur dans The Stanley Parable, et avec le deuxième avatar dans ​INSIDE). Dans ces trois œuvres, les personnages jouables sont les opérateurs d’un méta-discours qui – tout en ne cessant d’opérer des « sorties » hors de la fiction pour s’adresser au joueur empirique – constitue en vérité le socle de la narration elle-même. [less ▲]

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See detailBorgese in mare verso l'Albania nel 1917
de Seta, Ilaria ULiege

Conference (2017, October 06)

Nel Fondo Borgese di Trieste, custodito presso la Biblioteca Attilio Hortis, donato dal figlio Leonardo negli anni Settanta e inventariato nel 2015, tra i vari documenti inediti vi è anche del materiale ... [more ▼]

Nel Fondo Borgese di Trieste, custodito presso la Biblioteca Attilio Hortis, donato dal figlio Leonardo negli anni Settanta e inventariato nel 2015, tra i vari documenti inediti vi è anche del materiale fotografico. Di particolare interesse un "Album di fotografie scattate da Borgese e altri in Albania (48 istantanee) 1917". In realtà si tratta di foto scattate durante il viaggio per mare sulla nave Corbière e poi sulla nave Ferruccio. Le didascalie consentono di ricostruire le tappe del viaggio, tra cui Taranto, Gallipoli, Corfù, Sajada, baia di Plataria. Si metterà in rilievo lo spirito di viaggiatore con cui la campagna militare è vissuta dall'autore che pubblicherà successivamente ben cinque libri di viaggio. Inoltre l’inedita "Relazione di G. A. Borgese di un viaggio in Albania e Macedonia nel giugno 1917" costituisce idealmente il testo di accompagnamento all'opuscolo fotografico e getta nuova luce su questioni storico-politiche di estremo rilievo (anti-imperialismo e antifascismo a venire). [less ▲]

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See detailL’amateurisme comme processus au cœur de la culture vidéoludique
Hurel, Pierre-Yves ULiege

Conference (2017, October 06)

Pierre-Yves Hurel – L’amateurisme comme processus au cœur de la culture vidéoludique 16h, vendredi 6 octobre 2017 Il y a des amateurs.trices de jeu vidéo. Des personnes qui aiment cette activité et s’y ... [more ▼]

Pierre-Yves Hurel – L’amateurisme comme processus au cœur de la culture vidéoludique 16h, vendredi 6 octobre 2017 Il y a des amateurs.trices de jeu vidéo. Des personnes qui aiment cette activité et s’y investissent sur le mode passionnel. Cela semble évident et pourtant la notion d’amateurisme a très peu été problématisée dans le cadre des sciences du jeu. On trouvera fréquemment la locution « amateurs de jeux vidéo » dans les productions scientifiques mais il s’agit alors de paraphraser l’appellation consacrée : il est plus généralement question de « joueurs.euses ». Sébastien Genvo fait d’ailleurs figure d’exception lorsqu’en 2003 il consacre quelques pages à cette question. A la suite de Leveratto (2000), il considère que c’est l’investissement des amateurs qui permet la mise en forme culturelle d’objets méprisés. Et effectivement, il n’y aurait pas de culture vidéoludique sans amateurs, tout comme il n’y aurait pas de culture cinématographique s’il n’y avait que des spectateurs (et non des cinéphiles). Les game studies se sont largement penchées sur les caractéristiques intrinsèques des dispositifs puis sur l’analyse du jeu en tant qu’activité. C’est probablement pourquoi elles n’ont pas eu le besoin de s’attaquer à la question du goût pour le jeu vidéo et de ses modalités. C’est au moment de se questionner sur ce qu’est la culture vidéoludique que ce besoin se fait jour. Comment comprendre sinon ce qui se joue chez les lecteurs de presse spécialisée, chez les spectateurs de lives sur Twitch (ces « joueurs secondaires » (Delbouille 2016)), chez les auteurs de fanfictions, de machinimas ou encore de fangames ? Ainsi, nous pensons qu’il serait salutaire que les sciences du jeu s’emparent de la question des modalités du goût pour le jeu vidéo. Nous proposons une première contribution à cette problématique ambitieuse dans le cadre de cette communication. Sébastien Genvo ne définit pas réellement l’amateur, si ce n’est sur le plan quantitatif : être un amateur, dit-il, c’est être un joueur assidu et régulier. Nous proposons plutôt, à la suite d’Antoine Hennion, de remettre le goût entendu comme processus au centre de l’analyse. En effet, les amateurs « (…) ne cessent d’élaborer des procédures pour mettre leur goût à l’épreuve et déterminer ce à quoi il répond (…) » (Hennion 2009: 58). C’est l’attitude réflexive et une forme d’attention prêtée lors de la « dégustation » qui fait l’amateur. On peut alors étudier ce qui caractérise le plaisir de jeu en situation, par exemple dans les dispositions prises par le joueur au niveau local (Boutet 2012, Ter Minassian et Boutet 2015) ou dans les types de plaisirs qui seraient propres au jeu vidéo (la fascination pour une mécanique de jeu particulière). Un prolongement possible consiste alors à interroger les activités créatives des amateurs de jeux vidéo (dessins, jeux amateurs, etc.) comme autant d’autres moyens de stimuler et travailler son goût. Les deux pans sont à articuler : à titre d’exemple, la création de jeux vidéo en amateur, peut donner une ampleur nouvelle au plaisir de compréhension du fonctionnement d’un programme informatique, déjà présent dans l’activité de jeu elle-même. En prenant appui sur les outils conceptuels des études de pratiques culturelles et sur une ethnographie de créateurs de jeux vidéo en amateur (Hurel 2017), notre problématisation de l’amateurisme dans le cadre du jeu vidéo montrera la position centrale de cette notion pour penser la culture vidéoludique. Bibliographie Emmanuel Boutet, « Jouer aux jeux vidéo avec style. Pour une ethnographie des sociabilités vidéoludiques », Réseaux, 2012, n°173-174, pp. 207-234. Hovig Ter Minassian et Emmanuel Boutet, « Les jeux vidéo dans les routines quotidienne », Espace Populations Sociétés, 2015/1-2. Julie Delbouille, « L’avatar vidéoludique : retour sur les notions d’immersion et de joueur secondaire », Séminaire du Liège Gamelab, 5 octobre 2016. Sébastien Genvo, « Introduction aux enjeux artistiques et culturels des jeux vidéo », L’Harmattan : Paris, 2009. Antoine Hennion, « Réflexivités. L’activité de l’amateur », Réseaux, 2009, n°153, La découverte : Paris, pp. 55-78. Pierre-Yves Hurel, « Le passage du jeu à la création : le cas du jeu vidéo amateur », Sciences du jeu, 7, 2017 (sous presse). Jean-Marc Leveratto, La Mesure de l’art. Sociologie de la qualité artistique, La Dispute : Paris, 2000. [less ▲]

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See detailLongitudinal Chromatic Aberration discussion on diffractive intraocular lenses
Loicq, Jerôme ULiege; Gatinel, Damien

Conference (2017, October 06)

Diffractive multifocal IOLs show chromatic aberration especially along the axis (LCA-longitudinal Chromatic aberration) but also out of the optical axis. These chromatic aberrations are the results of the ... [more ▼]

Diffractive multifocal IOLs show chromatic aberration especially along the axis (LCA-longitudinal Chromatic aberration) but also out of the optical axis. These chromatic aberrations are the results of the refractive chromatic properties of the lens, driven by refractive indexes involved into the light path and the diffractive profiles. Refractive effects are mainly controlled by the biomaterial Abbe number while diffractive effects are controlled by the topography of the diffractive pattern. The insertion of a multifocal diffractive lens after crystalline lens extraction may significantly modify the chromatic aberration of the pseudophakic eye. Chromatic aberrations are inducing vision losses due sharpness reduction of any object edges. The contrast sensitivity as much as the visual acuity are then reduced. This has been proven with measurements optical benches. Diffractive and refractive effects act in an opposite way and can in principle be compensated. However rules to creates an achromatic lens based on refractive-diffractive lens are quite complex because topology, dioptry , abbe number,… In this study, we will investigate the effect of wavelength on the through-focus modulation transfer function (MTF) and diffraction efficiency for different pupil apertures and different diffractive intraocular lenses. Pin-hole effect will also be discussed and addressed with the point of view of chromatic effect. [less ▲]

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See detailSelf et perspective en première personne
Englebert, Jérôme ULiege; Monville, François

Conference (2017, October 06)

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See detailAbdominal steatonecrosis in a twelve-year old Highland bull.
Casalta, Hélène ULiege; Bayrou, Calixte ULiege; Denis, Marine ULiege et al

Poster (2017, October 05)

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See detailExperiences with using netCDF 4
Troupin, Charles ULiege; Watelet, Sylvain ULiege; Barth, Alexander ULiege et al

Conference (2017, October 05)

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See detailQuantitative profiling of endogenous polar metabolites from low volumes of blood samples
Kok, Miranda ULiege; Fillet, Marianne ULiege

Poster (2017, October 05)

The etiology of many diseases is not yet completely understood. The involved biological processes might be resolved using a metabolomics approach, because metabolomics provides unique challenging ... [more ▼]

The etiology of many diseases is not yet completely understood. The involved biological processes might be resolved using a metabolomics approach, because metabolomics provides unique challenging opportunities to correlate the metabolome with a physiological or pathophysiological status and provides a vision on the relationships between genes, gene expression, environment and lifestyle. Here, we present the development of two ultra-high performance liquid chromatography (UHPLC) methods coupled to mass spectrometry (MS) for the separation and quantitation of polar metabolites in blood samples. A reversed-phase UHPLC-MS/MS method has been developed to quantify anionic energetic metabolites, whereas hydrophilic interaction chromatography (HILIC)-MS/MS has been used to determine amino acids. Two sample pretreatment procedures have been developed for an optimal recovery of the respective metabolites from whole blood samples. One method involved the precipitation of proteins with acetonitrile and acids. In addition, volumetric absorptive microsampling has been used for the sample preparation. Small and accurate quantities of biological fluids (10 or 20 µL) can be collected with this sampling technique, which is of great interest for volume-limited samples or serial collection of samples. The developed methods have been validated and will be applied to determine differences in metabolite concentrations between plasma samples from patients and controls. This can lead to a breakthrough in the understanding of diseases and can open new therapeutic perspectives. [less ▲]

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See detailL’intention des maitres de stage lié à l’utilisation d’un référentiel de compétences
Detroz, Pascal ULiege; Giet, Didier ULiege; MASSART, Valérie ULiege et al

Conference (2017, October 05)

En s’appuyant notamment sur deux référentiels internationaux : le WONCA tree et le Canmeds une équipe de travail, constituée des enseignants du département de médecine générale de notre institution ... [more ▼]

En s’appuyant notamment sur deux référentiels internationaux : le WONCA tree et le Canmeds une équipe de travail, constituée des enseignants du département de médecine générale de notre institution, accompagnés de 20 médecins en activité, a listé les activités et tâches que devait pouvoir accomplir un clinicien compétent. Ils ont ensuite organisé ces tâches en six grandes catégories. Pour chacune d’elles, une compétence centrale a été identifiée, ainsi qu’une série de familles de situations dans lesquelles cette compétence est mobilisée. Une fois finalisé, le document a été soumis à un panel d’experts de terrain et aux étudiants pour validation afin de s’assurer que le projet soit perçu comme dynamique et mobilisant. Le référentiel terminé, la seconde étape méthodologique a été la reconfiguration de l’enseignement pour qu’il permette l’atteinte des compétences visées. Le problème qui s’est posé à l’équipe enseignante est qu’une partie importante de la formation se fait en dehors des murs de l’université : elle se passe en de nombreux lieux de stage sous la supervision de maîtres de stage, souvent des médecins en activité ayant pour la plupart peu de lien avec la faculté. Afin d’être efficace, il est cependant nécessaire que l’ensemble des intervenants dans la formation des étudiants, y compris ces maîtres de stages, utilise le référentiel de formation comme référent aux activités d’apprentissages proposées aux étudiants. Or, une telle utilisation ne coule pas de source. L’objectif de cette étude est de connaître les intentions des maîtres de stage (MdS) quant à cette utilisation. Afin de connaître les éléments prédicteurs de cette intention, nous avons fait appel à la théorie du comportement planifié (Ajzen, 1985, 1991 ; Ajzen et Fishbein, 2005) pour guider notre démarche. Ce modèle est réputé comme étant le plus puissant pour prédire les comportements. Il a été utilisé dans de très nombreuses études, y compris dans le domaine de la santé. (Reid et Wood, 2008, Hardeman et al, 2002, Stecker, Fortney, Hamilton et Ajzen, 2007)… Selon cette théorie le comportement peut être directement prédit à partir d’une intention et celle-ci est déterminée par trois facteurs. [1] l’attitude envers le comportement [2] La norme subjective et [3] Le contrôle perçu. Conformément à la méthodologie proposée par Ajzen, nous avons dès lors conçu un questionnaire mesurant de manière directe et indirecte les divers paramètres de ce modèle (attitudes, normes sociales et contrôle perçu) sur la base de sept entretiens avec des maîtres de stage. Ce questionnaire a ensuite été proposé à la population des Maitre de Stage. Nous avons obtenu 68 réponses. Après avoir effectué des régressions hiérarchiques pas à pas ascendantes, nous avons conclu qu’ensemble, les attitudes, les normes sociales et le contrôle perçu expliquaient 83 % de l’intention d’utiliser le référentiel. D’autres analyses ont permis de déterminer les leviers et les freins influant directement sur cette intention. Ils seront présentés lors de notre communication. [less ▲]

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See detailAtypical polypoid leiomyosarcoma in an ouessant ewe.
Bayrou, Calixte ULiege; Casalta, Hélène ULiege; Cassart, Dominique ULiege et al

Poster (2017, October 05)

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See detailLa réalité virtuelle : un outil d'enseignement universitaire pour les modèles de croyances liés à la santé,
Etienne, Anne-Marie ULiege

Conference (2017, October 05)

L’Université a un rôle à jouer dans la transition vers la société numérique. Le support numérique permet un accès aux savoirs moins contraint temporellement et géographiquement (Goastellec, 2014) et en ... [more ▼]

L’Université a un rôle à jouer dans la transition vers la société numérique. Le support numérique permet un accès aux savoirs moins contraint temporellement et géographiquement (Goastellec, 2014) et en même temps, il est porteur d’une culture du foisonnement et de l’instantané aux antipodes de la tradition académique (Loisy, 2014). En conséquence, un des enjeux d’une transition numérique réussie réside dans la transformation du métier de l’enseignant, tout en laissant une belle place à la créativité (Psotka, 2013). Les référentiels de compétences définissent ce qui doit être appris aux différents moments du parcours universitaire et le niveau de maitrise à atteindre. Ces compétences supposent tant l’éducation “au” numérique que “par” le numérique (Merchant et al., 2014 ; Pacte d’excellence, 2017). C’est pourquoi à l’Université de Liège (Belgique), un nouveau projet transversal d’enseignement par le numérique est en cours de construction ; un de ses objectifs sera de faciliter la progression des compétences et apprentissages critiques des étudiants pendant leur cursus universitaire : du Bloc 1 du Bachelier au Bloc 2 du Master. Le cours de psychologie de la santé constituera un des pilotes de cette nouvelle façon d’enseigner. Il s’agira d’intégrer la réalité virtuelle comme outil d’aide à la compréhension. Les environnements virtuels permettront d'incorporer des concepts abstraits (les attitudes, les normes subjectives, etc) dans des expériences concrètes (l’adoption d’un comportement de santé par l’usager). Pour illustrer ces concepts abstraits, nous utiliserons les principes du dispositif de l'échafaudage (Scaffolding). La compétence de l’étudiant ira en augmentant : nous partirons d’environnements virtuels « secure » et généraux vers des environnements plus complexes : par exemple mettre en place un comportement de santé, seul ou en présence d’autrui, à son domicile puis dans un restaurant; ou encore en état de « bonne » santé versus malade. Les étudiants (psychologues et acteurs en santé publique) recevront les concepts associés aux modèles de santé à l’intérieur d’un module de cours qui comprendra des exposés classiques, un chapitre de livre, des exercices et plusieurs séances d’immersion en réalité virtuelle en grand auditoire. Il y aura uniquement trois temps d’évaluation : avant de commencer ce dispositif, une semaine après avoir terminé le module et au cours de la session d’examen (Merchant, 2014). Les étudiants (n = +/- 200) répondront à plusieurs questionnaires : sentiment de présence, connaissances théoriques et pratiques à propos des concepts ainsi que les compétences acquises (cf. Référentiel de psychologie / santé publique), Nous discuterons de la plus value de ce dispositif pour l’enseignant. Ainsi, selon Quales et al. (2009), les résultats attendus pourraient être que la fusion des espaces réels et virtuels devraient offrir "un niveau unique d'échafaudages éducatifs", ainsi qu’un transfert d'apprentissage amélioré des domaines abstraits et concrets". Nos attentes vont dans ce sens et même nous pensons que la réalité virtuelle peut ne pas être juste efficace, elle peut donner envie de poursuivre l’apprentissage de manière informelle et en dehors de l’université. [less ▲]

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See detailDissection de l’évolution du dispositif d’évaluation en anatomie macro- et microscopique : une réponse à l’évaluation de compétences complexes dans les grands groupes
Bonnet, Pierre ULiege; Crahay, Vinciane ULiege; Humblet, Jean-Philippe ULiege et al

Conference (2017, October 05)

Contexte et problématique : L’apprentissage de l’anatomie aboutit à l’acquisition de compétences complexes. Outre la maîtrise de connaissances factuelles (noms, circuits…) l’apprenant se construit ... [more ▼]

Contexte et problématique : L’apprentissage de l’anatomie aboutit à l’acquisition de compétences complexes. Outre la maîtrise de connaissances factuelles (noms, circuits…) l’apprenant se construit progressivement une vision interne tridimensionnelle de l’architecture du corps humain qu’il mettra en pratique au contact du corps du patient ou des représentations de celui-ci (imagerie médicale, coupes microscopiques). Le dispositif d’apprentissage mis en place entraîne ces compétences de vision spatiale par le recours à la schématisation, l’utilisation de ressources vidéo, la pratique de la dissection… Une évaluation en phase avec le dispositif d’enseignement (alignement pédagogique) se heurte à la problématique des grands groupes : 1500 étudiants sont évalués en première année, 300 en seconde et en troisième rendant impossible le recours à une évaluation orale. L’évaluation écrite mise en place comportait dans un premier temps des questions de type QCM (connaissances factuelles) combinées à une question ouverte (QO) (réalisation d’un schéma, d’une coupe). Au départ, la correction de la QO était basée sur une grille de critères d’importance pondérée dont la présence ou non (mode binaire) est encodée dans un fichier FMP (File Maker Pro) élaboré à cet effet par l’enseignant. À chaque évaluation correspondait une fiche encodée sur ordinateur. Description : La lourdeur de l’élaboration du fichier correctif propre à chaque question et la multiplicité des demandes de ce type de solution de correction au sein de l’institution ont permis l’élaboration d’une solution institutionnelle, le logiciel SQORE développé grâce à l’appui du Service de Méthodologie et d’Aide à la Réalisation de Test (SMART). L’étudiant est évalué sur base d’une QO rédigée dans un cadre désigné sur une feuille à lecture optique. La réponse se présente sous forme de texte, de schéma, de graphique… suivant les consignes données. En anatomie, l’énoncé comporte un ou des schémas de base afin de baliser la réponse. L’enseignant a fourni au SMART sa grille de correction établie sur base de critères divisés en indices multiples. La correction s’effectue une fois les copies scannées. Via Internet, l’enseignant accède à ses corrections. Il dispose à l’écran de la copie et de sa grille à scorer. Le dispositif est utilisé en anatomie, histologie, physiologie, psychiatrie, médecine vétérinaire, droit, Agro-Bio Tech et HEC. Une fois la correction réalisée, les résultats sont accessibles, et l’enseignant peut définir un intervalle de cotes totales dans le but de vérifier sa correction initiale (cas limites entre 9 et 11/20 par exemple). Discussion : La dématérialisation, la traçabilité, le calcul et le transfert automatiques des notes vers le système de gestion de notes de l’institution facilitent la tâche du correcteur, mais la plus-value docimologique concerne la démarche qualité qui sous-tend l’outil, ayant pour but d’améliorer l’objectivité des corrections, notamment en imposant une grille de correction, en rendant les copies anonymes et en obligeant à corriger par question ou groupe de critères. Conclusion : À terme le dispositif permettra le recours à des correcteurs multiples pour tout ou partie de l’évaluation permettant de s’assurer de la cohérence inter-correcteurs. À plus longue échéance, l’outil pourra être utilisé pour de l’auto-évaluation. [less ▲]

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See detailFurther insight into the iterative ecological radiation of damselfishes (Pomacentridae)
Gajdzik, Laura ULiege; Lepoint, Gilles ULiege; Michel, Loic et al

Conference (2017, October 05)

The evolutionary history of Pomacentridae (damselfishes) is a rare example of the occurrence of an iterative ecological radiation in the ocean. Damselfishes have experienced many repeated convergences ... [more ▼]

The evolutionary history of Pomacentridae (damselfishes) is a rare example of the occurrence of an iterative ecological radiation in the ocean. Damselfishes have experienced many repeated convergences wherein subclades radiated across similar trophic strategies (i.e. pelagic foragers, benthic feeders, and an intermediate group) and similar morphologies. The presence of evolutionary convergences in damselfishes was recently highlighted by the combination of ecological and morphological data, and the use of phylogenetic comparative methods. Nevertheless, many other aspects of these replicated sets of lineages remain unexplored. For example, little is known about the functional diversity of assemblages including convergent lineages that emerged from iterative processes of ecological radiation, or which of the niche-related processes and phylogenetic conservatism are the major factors shaping these assemblages. Here, we conducted a quantitative comparison of these processes in damselfish assemblages that belong to three distinct Indo-Pacific coral reefs differing in taxonomic composition, morphology and degree of human disturbance. Using various metrics, we compared the functional diversity (based on a dataset of eight functional traits) and the isotopic diversity (a proxy of trophic diversity) among assemblages, grasping many aspects of the eco-functional diversity of Pomacentridae. We also tested whether these eco-functional traits displayed some evolutionary conservatism. Our results demonstrate that the eco-functional diversity of damselfishes follows similar patterns among Indo-Pacific coral reefs. The trophic space remains equivalent despite gradient in species richness, whereas the number of functional entities occupied by taxa dictates the size of the functional space. In each assemblage, eco-functional niches are highly differentiated and evenly distributed in spaces of similar size. The inconsistent phylogenetic structure of eco-functional traits suggests that the similarity in the diversity of damselfish assemblages is mainly driven by niche-based processes and not by phylogenetic relatedness. We suggest that a broader application of our approach will help to uncover the mechanisms of reef fish community assembly over space and time. [less ▲]

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See detailThe mathematical challenges in agrogeophysics: examples and ways ahead
Garré, Sarah ULiege; Nguyen, Frédéric ULiege; Lesparre, Nolwenn ULiege et al

Conference (2017, October 05)

Electrical resistivity tomography (ERT) is increasingly used in the context of agriculture since the measured resistivity distribution can be linked to soil moisture, soil structure or pore water salinity ... [more ▼]

Electrical resistivity tomography (ERT) is increasingly used in the context of agriculture since the measured resistivity distribution can be linked to soil moisture, soil structure or pore water salinity. Due to its minimally invasive character, its spatial coverage and its monitoring abilities, ERT can be used to study field heterogeneity and competition between plants, quantify water fluxes throughout a growing season or distinguish preferential flow pathways in soils. Nevertheless, a lot of challenges still remain. From a mathematical point of view, the inverse problem linked to ERT is ill-posed. To solve it, the inverse problem is often regularized with a Tikhonov-type approach. The latter is typically done using a gradient operator, resulting in smoothed resistivity distribution. However, strong contrasts can exist due to e.g. compacted soil layers due to ploughing, water infiltration fronts, etc. In such a case, other operators such as the total variation or the minimum gradient support may be used. In such approaches, the selection of the regularization parameter with respect to the data quality and the definition of image appraisal indicators still remains a challenge. Uncertainty quantification of ERT-derived results often relies on data-error propagation around the inverse solution. Given the inherent non-uniqueness of the problem, both mathematically but also from a pedological point of view, challenges for stochastic approaches lie in providing realistic uncertainty estimation, encompassing all uncertainties (e.g. prior, pedophysics or data error). Monitoring data allows further elements to constrain the inverse problems, data can be replaced by data difference and regularization may incorporate the temporal dimension for instance. However, such constraints require their compatibility with the studied temporal process. Whereas the above challenges stay true for monitoring data, several alternative strategies are being developed more specifically, such as coupled hydrogeophysical inversion, with the challenge of addressing the non-stationarity of pedophysical relationships and the accuracy of the conceptual flow and transport model using deterministic approaches. Stochastic approaches allow to a certain extent to tackle those challenges in particular using a prior falsification/validation approach following a Popper-Bayes philosophy. In this presentation, we will illustrate the challenges and some of the recent developments with numerical and field examples. [less ▲]

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See detailInvestigation of content of Panda oleosa (Pierre), a plant used in Kisangani areas for its antihyperglycemic activity
Katemo Muhoya, Frédéric; Kadima Ntokamunda, Justin; Njakarinala Ranarivelo et al

Conference (2017, October 05)

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See detailValidité et utilité d'un test d'orientation dans le secteur de la santé en Fédération Wallonie Bruxelles
Detroz, Pascal ULiege; Monseur, Christian ULiege; Romainville, Marc et al

Poster (2017, October 04)

La Fédération Wallonie Bruxelles de Belgique n’avait pas, jusqu’en 2016, de Filtres à l’entrée des études de Médecine. Elle avait par contre un test diagnostique, formatif, obligatoire, mais non ... [more ▼]

La Fédération Wallonie Bruxelles de Belgique n’avait pas, jusqu’en 2016, de Filtres à l’entrée des études de Médecine. Elle avait par contre un test diagnostique, formatif, obligatoire, mais non contraignant (il n'avait pas d'effet sur l'avenir des étudiants). Ce test se présentait sous la forme d’un questionnaire à choix multiple (QCM) évaluant plusieurs matières : la chimie, la physique, la biologie, les mathématiques, le français et l’anglais. Il se déroulait en même temps sur le site des cinq universités concernées par les études dans le domaine de la santé de la FWB. Les questions du test sont identiques dans ces différentes universités. Il a été organisé entre 2013 et 2016 , deux fois par année en juillet et septembre. L’enjeu était de permettre aux étudiants de mesurer leur compétence à l’entrée des études pour se rassurer (pour les plus fort d’entre eux), pour s’améliorer à travers des activités de remédiation, ou éventuellement pour renoncer (pour les pl us faible d’entre eux). La présente étude a pour objet d’évaluer l’efficacité de ce test diagnostic. Concrètement, les objectifs de l'étude décrite étaient de/d’ : 1. Analyser la qualité psychométrique du test d'orientation. 2. Établir le lien entre les données biographiques de l’étudiant et les résultats au test d'orientation. 4. Établir le lien entre les résultats au test d'orientation et l’inscription réelle en faculté de médecine.(l'effet de dissuasion du test) 3. Établir le lien entre le test d'orientation et la réussite globale et par matière à la fin de la première année. Nos conclusions générales sont les suivantes : Les tests d’orientation présentent une bonne qualité psychométrique. C’est toutefois plus vrai pour les disciplines scientifiques que pour l’anglais et le français. Le test vise bien les aptitudes spécifiques et les compétences prérequises pour entreprendre des études supérieures dans le secteur de la santé. Les candidats proviennent d’un milieu socio-économique élevé et présentent un parcours scolaire au dessus de la moyenne. Ces variables expliquent, chez les étudiants diplômés du secondaire en Belgique, plus de 30% de la variance du score de sciences au test d'orientation (score factorisé à partir des scores de maths, bio, chimie et physique) et plus de 10% du score de langue (score factorisé à partir des scores de français et d’anglais) à ce même test. Ces mêmes variables de présage expliquent aussi en partie le résultat en fin de premier bachelier (22% de variance expliquée pour les étudiants diplômés en Belgique, 34% pour les étudiants diplômés en France). Les résultats aux tests d’orientation, quant à eux, expliquent ensemble 29% de la variance aux résultats de bac1 pour les étudiants diplômés en Belgique et 17% pour ceux diplômés en France. Le test de sciences s’avère beaucoup plus prédictif que le test de langues Les test dissuade peu les étudiants les plus faibles de s’inscrire. Ces résultats seront présentés lors de la communication [less ▲]

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See detailDeveloping a prognosis tool for urolithiasis with obstruction in Belgian blue cattle breed.
Casalta, Hélène ULiege; Greban de Saint Germain, Coralie; Djebala, Salem ULiege et al

Conference (2017, October 04)

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See detailEvolution récente du trait de côte en Afrique de l’Ouest: Impacts actuels et à venir sur les villes
Ozer, Pierre ULiege; Comoe, Raymond; De Longueville, Florence

Conference (2017, October 04)

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See detailOntogenetic and phylogenetic simplification during white stripe evolution in anemonefish
Salis, Pauline; Roux, Natacha; Soulat, Olivier et al

Poster (2017, October 04)

Coral reef fishes provide classical examples of complex colour patterns exhibiting a huge diversity. Most of these species display spots, stripes, repeated lines, eyespots, grids, etc. This diversity in ... [more ▼]

Coral reef fishes provide classical examples of complex colour patterns exhibiting a huge diversity. Most of these species display spots, stripes, repeated lines, eyespots, grids, etc. This diversity in colour patterns might serve for species recognition, camouflage, mimicry and/or warning. To date, work have mainly been focused on the link between colour patterns, ecology and behavior, that is the ultimate role of these patterns. However, the underlying development and cellular mechanisms controlling these patterns and their evolution, that is their proximal mechanisms, are still largely unknown. To address this question, we are using a well-known coral-reef fish models, anemonefishes (Amphiprion and the monotypic Premnas). This tribe (Amphiprionini) within the Pomacentridae is composed of 30 species that display a relatively simple colour pattern made of 0-3 white stripes that are well visible on a yellow to red, brown or even black body background. This simple colour pattern offers a unique opportunity to better delineate the pattern and processes allowing the diversification of such diversity. Here, we focus on the vertical white stripes present in most species of Amphiprion. We first map their striped patterns on the anemonefish evolutionary tree and reconstruct the ancestral state. Our results provide evidences that the diversification in colour pattern in anemonefish results from successive losses of stripes during evolution. Then, by an ontogenetic study, we show that larvae stripes always appear from rostral to caudal. Interestingly, larvae of some species such as A. frenatus have surplus stripes (with a maximum of three stripes) which disappear caudo-rostrally during the juvenile phase to acquire their adult color pattern. The reduction of stripes number over ontogeny totally matches the sequences of stripe losses across evolution. This demonstrates that the diversification in colour pattern among anemonefish lineages results from changes in developmental processes. Finally, assuming that the number of stripes may be related to the species ecology, we further determined the links between the number of stripes and ecomorphological traits. Together, this innovative study allows to understand how developmental processes are shaping the diversification of color pattern of anemonefishes and how it may be related with ecomorphological traits evolution. [less ▲]

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See detailPoor quality medicines in Africa: how to combat this real scourge
Marini Djang'Eing'A, Roland ULiege; Sacre, Pierre-Yves ULiege; Ziemons, Eric ULiege et al

Conference (2017, October 04)

Poor (or low) quality medicines remain a crucial problem of public health around the world. They encompass falsified /counterfeit, substandard or degraded drugs. If proportion of 1% is estimated in ... [more ▼]

Poor (or low) quality medicines remain a crucial problem of public health around the world. They encompass falsified /counterfeit, substandard or degraded drugs. If proportion of 1% is estimated in developed countries, they are globally about 10 % of counterfeit drugs according to Food and Drug Administration, with 30% in low income countries and astonishing values (80 %) reported in some African countries. The consequences and dangers of such medicines are therapeutic failure, drug poisoning, microbial resistance or even death. For the pharmaceutical industries, there are loss of image, loss of financial income and employment. There is need to combat this scourge, but most of the time, means are very limited and even lacking. In this context, several means or tools are developed by the ULg Pharmacy Department including the simple ones including organoleptic tests, simple analytical tests such as analytical balance, pHmeter, thin layer chromatography (TLC), UV-visible spectrophotometry to the more complex including liquid chromatography (LC) coupled to UV-Vis detector, or to mass spectrometry, nuclear magnetic resonance, Raman imagery (RIM) and near infrared (NIR) spectroscopy associated with the principal component analysis (PCA). In this way, we have analyzed several suspected samples obtained via the public health authorities of the D.R. Congo, Benin and Rwanda after their seizure or through collaborations. The results are presented by therapeutic class, namely: analgesics: - by using LC and complementary information from victim patients, we were able to discover an abnormal presence of a benzodiazepine at very high doses in paracetamol tablets which was the cause of unusual adverse effects (sedative effects, polyuria and hypotension) in patients who have consumed it; - by using the NIR-PCA, we were able to elucidate the substitution of an excipient (glycerol) by diethylene glycol in paracetamol syrup which caused the death of a hundred babies. antimalarials: - we faced cases of arthemether-lumefantrine tablets which had no therapeutic effect. By means of TLC and LC, the absence of these two active ingredients was clearly demonstrated, but the presence of starch was revealed by RIM; - another case of quinine tablets that had no expected pharmacological effect was faced. The use of several combined techniques (TLC, LC-MS, NMR and RIM) allowed to detect the presence of a substance with an imidazole structure (antamoeba). antibiotics: - the case of amoxicillin powder which after reconstitution in hospital caused poisoning of the babies until death for some was investigated. The reconstitution of the suspension in the laboratory had revealed the misuse of hydrogen peroxide instead of distilled water; - we participated to a large-scale study (80 samples of amoxicillin powder) that showed 8% of overdose. The cases presented indicate that there are effectively poor quality medicines and there is need to sustain strong collaborations while reinforcing appropriate measures to protect users. [less ▲]

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See detailSurface circulation in the Western Mediterranean shown by a synergy of satellite-derived datasets
Karimova, Svetlana ULiege

in Proc. SPIE 10422, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2017 (2017, October 03)

The present study is aimed at bringing together the benefits of different approaches for extracting information on surface currents from satellite-derived datasets and ocean data reanalysis. As a region ... [more ▼]

The present study is aimed at bringing together the benefits of different approaches for extracting information on surface currents from satellite-derived datasets and ocean data reanalysis. As a region of interest, we use the Western Mediterranean, which is having a peculiar pattern of surface circulation, due to the inflow of Atlantic water through the Strait of Gibraltar. Among the data analysed in this study, there are fields of sea surface temperature (SST) as well as different datasets on surface currents retrieved from satellite altimetry data, satellite imagery and their synergy. In particular, we analyse (i) fields of geostrophic currents retrieved from a gridded sea level anomaly (SLA) data product, (ii) the data on total surface currents derived in the framework of the GlobCurrent project, and (iii) the data provided by reanalysis. Special attention is being paid to the performance of different datasets in manifesting largest mesoscale eddies of the region of interest. As a result of the comparison performed, the general scheme of surface circulation in the region of interest was updated. Main novelties proposed by the renewed scheme concerns the number of cyclonic gyres presenting in the field of surface currents. [less ▲]

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See detailNotebooks for documenting work-flows
Troupin, Charles ULiege; Barth, Alexander ULiege; Muñoz, Cristian et al

Conference (2017, October 02)

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See detailExozodiacal disks
Absil, Olivier ULiege; Ertel, Steve

Conference (2017, October 02)

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See detailDevelopment of real-time PCR targets for the detection of Tenebrio molitor and Hermetia illucens
Marien, Aline; Debode, Frédéric; Aerts, Céline et al

Poster (2017, October 01)

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See detailFirst Detection of the Nitric Oxide Dayglow on Mars
Stevens, Michael H.; Siskind, David E.; Evans, J. Scott et al

Conference (2017, October 01)

Nitric oxide (NO) is a well-known indicator of solar and auroral activity in the terrestrial upper atmosphere. Direct measurements of NO on Mars can therefore constrain studies of energetic processes ... [more ▼]

Nitric oxide (NO) is a well-known indicator of solar and auroral activity in the terrestrial upper atmosphere. Direct measurements of NO on Mars can therefore constrain studies of energetic processes controlling the composition and structure of its upper atmosphere (80-200 km). Identifying and quantifying these processes is one of the science objectives of NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission currently orbiting Mars. NO can be observed directly by solar resonance fluorescence in the mid-ultraviolet (MUV). Indeed, this approach has routinely been used to measure terrestrial NO for 50 years. On Mars, this “dayglow” emission is very weak relative to other bright MUV features and thus has confounded attempts at its detection there for nearly the same amount of time. Here, we report the first detection of the NO dayglow in the Martian atmosphere using limb observations by the Imaging Ultraviolet Spectrograph (IUVS) on the MAVEN spacecraft. The detection is enabled by the spectral modeling and removal of the carbon monoxide Cameron bands, which dominate the MUV limb spectra. We focus on the spectral region between 213.0-225.5 nm, where three NO gamma bands emit. We will infer NO densities from the dayglow spectra and compare our observations with predictions from a photochemical model. We will discuss the implications, particularly in the context of previous in situ measurements. [less ▲]

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See detailMars’ seasonal mesospheric transport seen through nitric oxide nightglow
Milby, Zachariah; Stiepen, Arnaud ULiege; Jain, Sonal et al

Conference (2017, October 01)

We analyze the ultraviolet nightglow in the atmosphere of Mars through nitric oxide (NO) δ and γ band emissions as observed by the Imaging UltraViolet Spectrograph (IUVS) instrument onboard the Mars ... [more ▼]

We analyze the ultraviolet nightglow in the atmosphere of Mars through nitric oxide (NO) δ and γ band emissions as observed by the Imaging UltraViolet Spectrograph (IUVS) instrument onboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft when it is at apoapse and periapse.In the dayside thermosphere of Mars, solar extreme-ultraviolet radiation dissociates CO[SUB]2[/SUB] and N[SUB]2[/SUB] molecules. O([SUP]3[/SUP]P) and N([SUP]4[/SUP]S) atoms are carried from the dayside to the nightside by the day-night hemispheric transport process, where they descend through the nightside mesosphere and can radiatively recombine to form NO(C[SUP]2[/SUP]Π). The excited molecules rapidly relax by emitting photons in the UV δ and γ bands. These emissions are indicators of the N and O atom fluxes from the dayside to Mars’ nightside and the descending circulation pattern from the nightside thermosphere to the mesosphere (e.g. Bertaux et al., 2005 ; Bougher et al., 1990 ; Cox et al., 2008 ; Gagné et al., 2013 ; Gérard et al., 2008 ; Stiepen et al., 2015, 2017).Observations of these emissions are gathered from a large dataset spanning different seasonal conditions.We present discussion on the variability in the brightness and altitude of the emission with season, geographical position (longitude), and local time, along with possible interpretation by local and global changes in the mesosphere dynamics. We show the possible impact of atmospheric waves forcing longitudinal variability and data-to-model comparisons indicating a wave-3 structure in Mars’ nightside mesosphere. Quantitative comparison with calculations of the Laboratoire de Météorologie Dynamique-Mars Global Climate Model (LMD-MGCM) suggests the model reproduces both the global trend of NO nightglow emission and its seasonal variation. However, it also indicates large discrepancies, with the emission up to a factor 50 times fainter in the model, suggesting that the predicted transport is too efficient toward the night winter pole in the thermosphere by ˜20° latitude to the north.These questions are now addressed through an extensive dataset of disk images, in complement to improved simulations of the LMD-MGCM and the Mars Global Ionosphere-Thermosphere Model (MGITM) models. [less ▲]

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See detailMars topographic clouds: MAVEN/IUVS observations and LMD MGCM predictions
Schneider, Nicholas M.; Connour, Kyle; Forget, Francois et al

Conference (2017, October 01)

The Imaging Ultraviolet Spectrograph (IUVS) instrument on the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft takes mid-UV spectral images of the Martian atmosphere. From these apoapse disk ... [more ▼]

The Imaging Ultraviolet Spectrograph (IUVS) instrument on the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft takes mid-UV spectral images of the Martian atmosphere. From these apoapse disk images, information about clouds and aerosols can be retrieved and comprise the only MAVEN observations of topographic clouds and cloud morphologies. Measuring local time variability of large-scale recurring cloud features is made possible with MAVEN’s ~4.5-hour elliptical orbit, something not possible with sun-synchronous orbits. We have run the LMD MGCM (Mars global circulation model) at 1° x 1° resolution to simulate water ice cloud formation with inputs consistent with observing parameters and Mars seasons. Topographic clouds are observed to form daily during the late mornings of northern hemisphere spring and this phenomenon recurs until late summer (Ls = 160°), after which topographic clouds wane in thickness. By northern fall, most topographic clouds cease to form except over Arsia Mons and Pavonis Mons, where clouds can still be observed. Our data show moderate cloud formation over these regions as late as Ls = 220°, something difficult for the model to replicate. Previous studies have shown that models have trouble simulating equatorial cloud thickness in combination with a realistic amount of water vapor and not-too-thick polar water ice clouds, implying aspects of the water cycle are not fully understood. We present data/model comparisons as well as further refinements on parameter inputs based on IUVS observations. [less ▲]

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See detailIsotopic Ratios in a Peculiar Outbursting Comet
Yang, Bin; Hutsemekers, Damien ULiege; Shinnaka, Yoshiharu et al

in Bulletin of the American Astronomical Society (2017, October 01), 49

Isotopic ratios in comets provide keys for the understanding of the origin of cometary material, and the physical and chemical conditions in the early Solar Nebula. A newly discovered peculiar comet, C ... [more ▼]

Isotopic ratios in comets provide keys for the understanding of the origin of cometary material, and the physical and chemical conditions in the early Solar Nebula. A newly discovered peculiar comet, C/2015 ER61, underwent an outburst with a total brightness increase of 2 magnitudes on the night of April 4th, 2017. The sharp increase in brightness offers a rare opportunity to measure the isotopic ratios of the light elements of this comet. We obtained two high-resolution spectra of C/2015 ER61 with UVES on Apr. 13 and Apr. 17 respectively. At the time of our observations, the comet was fading gradually since the outburst. We measured the 12C/13C and 14N/15N isotopic ratios from the CN Violet (0,0) band. In addition, we determined the 14N/15N ratio in NH2 for C/2015 ER61 from four pairs of NH2 isotopologue lines. Some 18OH lines were detected but the S/N of these lines is too low to derive a reliable 18O/16O estimate. We will present our UVES spectra of C/2015 ER61, obtained shortly after the outburst. We will also present the comparison of the Isotopic ratios of C/2015 ER61 with those of other comets. [less ▲]

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See detailFirst Retrieval of Thermospheric Carbon Monoxide From Mars Dayglow Observations
Evans, J. Scott; Stevens, Michael H.; Jain, Sonal et al

Conference (2017, October 01)

As a minor species in the Martian thermosphere, Carbon Monoxide (CO) is a tracer that can be used to constrain changing circulation patterns between the lower thermosphere and upper mesosphere of Mars. By ... [more ▼]

As a minor species in the Martian thermosphere, Carbon Monoxide (CO) is a tracer that can be used to constrain changing circulation patterns between the lower thermosphere and upper mesosphere of Mars. By linking CO density distributions to dynamical wind patterns, the structure and variability of the atmosphere will be better understood. Direct measurements of CO can therefore provide insight into the magnitude and pattern of winds and provide a metric for studying the response of the atmosphere to solar forcing. In addition, CO measurements can help solve outstanding photochemical modeling problems in explaining the abundance of CO at Mars. CO is directly observable by electron impact excitation and solar resonance fluorescence emissions in the far-ultraviolet (FUV). The retrieval of CO from solar fluorescence was first proposed over 40 years ago, but has been elusive at Mars due to significant spectral blending. However, by simulating the spectral shape of each contributing emission feature, electron impact excitation and solar fluorescence brightnesses can be extracted from the composite spectrum using a multiple linear regression approach. We use CO Fourth Positive Group (4PG) molecular band emission observed on the limb (130 - 200 km) by the Imaging Ultraviolet Spectrograph (IUVS) on NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft over both northern and southern hemispheres from October 2014 to December 2016. We present the first direct retrieval of CO densities by FUV remote sensing in the upper atmosphere of Mars. Atmospheric composition is inferred using the terrestrial Atmospheric Ultraviolet Radiance Integrated Code adapted to the Martian atmosphere. We investigate the sensitivity of CO density retrievals to variability in solar irradiance, solar longitude, and local time. We compare our results to predictions from the Mars Global Ionosphere-Thermosphere Model as well as in situ measurements by the Neutral Gas and Ion Mass Spectrometer on MAVEN and quantify any differences. [less ▲]

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See detailWhat CoRoT tells us about δ Scuti stars. Existence of a regular pattern and seismic indices to characterize stars
Michel, Eric; Dupret, Marc-Antoine ULiege; Reese, Daniel et al

in European Physical Journal Web of Conferences (2017, October 01), 160

Inspired by the so appealing example of red giants, where going from a handful of stars to thousands revealed the structure of the eigenspectrum, we inspected a large homogeneous set of around 1860 δ ... [more ▼]

Inspired by the so appealing example of red giants, where going from a handful of stars to thousands revealed the structure of the eigenspectrum, we inspected a large homogeneous set of around 1860 δ Scuti stars observed with CoRoT. This unique data set reveals a common regular pattern which appears to be in agreement with island modes featured by theoretical non-perturbative treatments of fast rotation. The comparison of these data with models and linear stability calculations suggests that spectra can be fruitfully characterized to first order by a few parameters which might play the role of seismic indices for δ Scuti stars, as Δv and v[SUB]max[/SUB] do for red giants. The existence of this pattern offers an observational support for guiding further theoretical works on fast rotation. It also provides a framework for further investigation of the observational material collected by CoRoT ([1]) and Kepler ([2]). Finally, it sketches out the perspective of using δ Scuti stars pulsations for ensemble asteroseismology [less ▲]

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See detailUnderwater world: the end of the myth
Parmentier, Eric ULiege

Conference (2017, October)

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See detailin and out-of sequence event stratigraphy across the Devonian-Carboniferous Boundary - a view from the shelf in S Belgium
Denayer, Julien ULiege; Mottequin, Bernard; Prestianni, Cyrille et al

in 33rd International Meeting of Sedimentology - 16ème Congrès français de sédimentologie : Abstract book (2017, October)

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See detailAcoustic space sharing in the hullabaloo of a coral reef in Mooreas Island, French Polynesia
Bertucci, Frédéric; Maratrat, Katy; Parmentier, Eric ULiege et al

Conference (2017, October)

The more vocal species in a community, the more complex the acoustic environment, and signals produced by marine organisms in order to communicate may interfere. Since acoustic space is a limited resource ... [more ▼]

The more vocal species in a community, the more complex the acoustic environment, and signals produced by marine organisms in order to communicate may interfere. Since acoustic space is a limited resource to be shared, selection may have favored a partitioning of the available acoustic windows both at the temporal and spectral levels. This has already been reported in insects, frogs, birds or mammals but rarely in fishes. Our study aimed to investigate sounds produced within an ichthyological community in the North Coast of Moorea Island (French Polynesia). By using passive acoustic monitoring technics, we identified a total of 38 different types of sounds, some dominating during day-time while others dominated during night-time. Over 24h, we also observed a succession of optimal sound production periods for each sound type which suggests a finer level of temporal partitioning of fish vocalizations. Finally, we further showed that acoustic features of co-occurring sound types significantly differed allowing partitioning at the spectral level too. These results demonstrate the existence of acoustic partitioning and interference avoidance in a coral reef fish community and highlight how acoustic communication might be optimized in such a biologically rich and dense environment as coral reefs. [less ▲]

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See detailIntramolecular Continuous-Flow Strategy Towards Methylphenidate (Ritalin) Hydrochloride
Gerardy, Romaric ULiege; Winter, Marc; Vizza, Alessandra et al

Poster (2017, October)

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See detailSoftware citation and process traceability
Troupin, Charles ULiege; Muñoz, Cristian; Rújula, Miquel Angel et al

Conference (2017, October)

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See detailGenealogie der Autorschaft: Elfriede Jelinek, die 1968-er Generation und das literarische Feld Österreichs
Neelsen, Sarah ULiege

in Klein, Delphine; Vennemann, Aline (Eds.) „MACHEN SIE WAS SIE WOLLEN!“ AUTORITÄT DURCHSETZEN, ABSETZEN UND UMSETZEN. (2017, October)

La question de l’autorité de l’auteur est abordée à l’aide de deux concepts clés de la théorie du champ de Pierre Bourdieu: „la relation“ et „la position“. Ainsi Elfriede Jelinek n’est plus perçue comme ... [more ▼]

La question de l’autorité de l’auteur est abordée à l’aide de deux concepts clés de la théorie du champ de Pierre Bourdieu: „la relation“ et „la position“. Ainsi Elfriede Jelinek n’est plus perçue comme un phénomène isolé, mais comme un acteur du champ littéraire, dans lequel elle est reliée à d’autres positions (écrivains, institutions) et où l’autorité est conférée, disputée voire retirée. L’article essaie de mettre en évidence la construction de l’autorité en l’historicisant. Trois phases de la trajectoire d’Elfriede Jelinek sont présentées : ses débuts lors de la Semaine culturelle pour la jeunesse) Innsbruck, son ascension dans la presse et finalement son internationalisation. Ainsi le rôle des champs voisins, tels que les médias et les institutions culturelles, dans le processus d’autorisation d’un auteur se trouve pris en compte. Des contributions d’Elfriede Jelinek dans la presse germanophone, peu analysées jusqu’ici, servent d’illustrations à l’argumentation. [less ▲]

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See detailDevelopment and decease of the so-called Frasnian reefs in the Frasnian of Belgium
Poty, Edouard; Denayer, Julien ULiege; Mottequin, Bernard

in 33rd International Meeting of Sedimentology - 16ème Congrès français de sédimentologie : Abstrcat Book (2017, October)

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See detailCessation of nucleos(t)ide analogue treatment after HBeAg seroconversion is associated with a 4-fold increased risk of relapse in cirrhotic compared to non-cirrhotic patients
Van Hees, S; Bourgeois, S; Van Vlierberghe, H et al

in Hepatology (Baltimore, Md.) (2017, October), 66(S1), 934

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See detailTreatment and outcome for small bowel adenocarcinoma (SBA): a real life experience of two Italian centres
Occhipinti, Mario; Botticelli, Andrea; ONESTI, Concetta Elisa ULiege et al

in Annals of Oncology (2017, October), 28(Suppl 6),

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See detailA 5-year survey of dermatophytes strains circulating in Belgium
SACHELI, Rosalie ULiege; DARFOUF, Rajae ULiege; ADJETEY BAHUN, Akolé ULiege et al

Poster (2017, October)

Objectives Dermatophytosis refers to superficial fungal infections of keratinized tissues caused by keratinophilic dermatophytes. They are the most common cause of superficial fungal infections worldwide ... [more ▼]

Objectives Dermatophytosis refers to superficial fungal infections of keratinized tissues caused by keratinophilic dermatophytes. They are the most common cause of superficial fungal infections worldwide. Epidemiological studies regarding dermatophytes infections have been conducted in several countries and differences in the incidence and in etiological agents have been reported. That is why national surveillance of circulating strains causing dermatophytosis is critical. The National Reference Center (NRC) for mycoses conducted a survey on dermatophytes strains circulating in Belgium from 2012 to 2016. The present study was performed to assess the profile of dermatophytosis and to identify the species involved. Methods The Belgian NRC for mycoses (Leuven and Liège) collected 14227 strains between January 2012 and December 2016. The strains were obtained from clinically suspected fungal infections of skin, hair and nails. Strains were collected from Belgian laboratories in order to confirm the fungal identification which was performed by microscopy and in case of doubt by ITS sequencing. Results Among the 14227 samples collected, 6248 were identified as dermatophytes (44%). Trichophyton rubrum was the most prevalent species accounting for 61,3% (n=3820) of the strains collected from all sources, followed by T. mentagrophytes complex (19,2%, n=1199) according to the ancient classification (including T. interdigitale, T. benhamiae and T. mentagrophytes). Other less prevalent species were also recorded: M. audouinii (n=507, 8,1%), M. canis (n=210, 3,3%), T. tonsurans (n= 140, 2,2%), T. violaceum (n=133, 2,1%), T. soudanense (n=125, 2%), M. praecox (n=60, 0,96%) and E. floccosum (n=19, 0,3%) for the main ones. Our data show the predominance of anthropophilic species causing tinea capitis especially M. audouinii responsible for 43,4% (n=303/716) of hair/scalp infection with an increasing number from 2014 to 2016. Trichophyton soudanense, rarely observed in Belgium in the past, is an emerging agent of tinea capitis particularly since 2013, accounting for 11,3% (n=81) of the cases during the 5-year study period. Zoophilic strains such as M. canis which were well represented in the past epidemiology of tinea capitis are decreasing accounting for only 8,8% (n=63) of hair/scalp infection. Finally, our data confirm the high prevalence of T. rubrum as the main etiologic agent of onychomycosis (78,1%, n=3094/3968) followed by T. mentagrophytes complex (18,8%, n=743/3968). Both latter strains were also responsible for the majority of skin infections as they were isolated respectively in 46,2% (n=693/1612) and 21,7% (n=348/1612) of skin samples. Conclusions The present epidemiological survey provides recent data on the prevalence of all dermatophytes circulating in Belgium. Analyzing such data is critical for the establishment of measures for prevention and control of dermatophytes infections. Our study confirms the predominance of T. rubrum followed by species from the ancient T. mentagrophytes complex (T. interdigitale + T. benhamiae) in the Belgian population. This survey highlights also the persistent predominance of M. audouinii and the emergence of T. soudanense as causative agents of tinea capitis. [less ▲]

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