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See detailLe rôle de la compréhension de la notion de modèle dans la vision des futurs enseignants des sciences de la structure atomique
Karous, Hamad ULg; Nihant, Brigitte ULg; Leyh, Bernard ULg

Conference (2016, October 16)

Atomic theory is a key concept in science education. However, it was found that students often have difficulties in learning the fundamental notions of this theory. These difficulties reveal themselves in ... [more ▼]

Atomic theory is a key concept in science education. However, it was found that students often have difficulties in learning the fundamental notions of this theory. These difficulties reveal themselves in the expression of some preconceptions which tend to persist over time and thus may occur up to the higher education level. The goal of our study is to highlight some difficulties related to the notions of models and modelling notions and to illustrate the causes of appearance of such preconceptions. To do this, two questionnaires were submitted to future sciences teachers (chemistry, biology and physics) who did a training at the University of Belgium in 2014-2015 and in 2015-2016 (40> participants). The first questionnaire deals with the modelling concept and process while the second one is about the atomic model diagrams which illustrate many textbooks. Identifying the nature of the models and their construction may lead to misconceptions while acquiring basic scientific knowledge. [less ▲]

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See detailUne hypokaliémie à Liège
VALDES SOCIN, Hernan Gonzalo ULg; EMONTS, Patrick ULg; HAMOIR, Etienne ULg et al

Conference (2016, October 15)

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See detailIs there a place for BTR markers in renal osteodystrophy?
DELANAYE, Pierre ULg

Conference (2016, October 15)

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See detailSartre et Merleau-Ponty : les matérialités de la politique
Caeymaex, Florence ULg

Conference (2016, October 15)

Detailed reference viewed: 24 (2 ULg)
See detailSeasonal changes and steroid control of perineuronal nets in the song control system
Cornez, Gilles ULg; Shevchouk, Olesya ULg; Madison, Farrah et al

Conference (2016, October 14)

Perineuronal nets (PNNs) are aggregations of extracellular matrix components surrounding the soma of some neurons, mainly GABAergic interneurons expressing the calcium binding protein parvalbumin (PV ... [more ▼]

Perineuronal nets (PNNs) are aggregations of extracellular matrix components surrounding the soma of some neurons, mainly GABAergic interneurons expressing the calcium binding protein parvalbumin (PV+). In mammals, the development of PNNs limits synaptogenesis around PV+ neurons and PNNs have been validated as a marker characterizing the end of critical periods for some types of learning. In oscines, song learning is limited to critical periods either during ontogeny in close-ended learners such as zebra finches or during specific phases of the annual cycle in open-ended learners such as canaries or starlings. In zebra finches, PNN expression increases when the song crystalizes and this increase is markedly inhibited if juveniles are deprived from a tutor, which is known to delay the closure of the critical period for song learning. Nothing is known however about a possible role of PNNs in adult seasonal plasticity of open-ended learners. We compared PNNs expression and their colocalization with PV+ neurons in photosensitive, photostimulated, and photorefractory starlings. Although this treatment affected as expected the testes volumes, testosterone concentrations and volumes of song control nuclei, it did not markedly change the expression of PNNs or PV+ neurons in song control or auditory nuclei. In a second experiment, brains of female canaries implanted with testosterone for 1, 2, 9, or 21 days displayed an increase of the total numbers of PV+ neurons and PNNs in HVC, the total number of PNNs in nucleus robustusarcopallialis (RA), the density of PNNs in Area X and the %PV+ neurons surrounded by PNNs in RA and Area X. Interestingly the density of PNNs in song control nuclei progressively decreases from zebra finches to canaries to starlings in parallel with the increased song plasticity in these species supporting the notion that PNNs may limit brain and thus song plasticity in a species-typical manner. [less ▲]

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See detailA full inference toolbox to measure multivariate relative dispersion
Aerts, Stéphanie ULg; Haesbroeck, Gentiane ULg

Conference (2016, October 14)

In the univariate context, coefficients of variation (CV) are widely used to compare the dispersion of a variable in several populations. When the comparison is based on p characteristics however, side-by ... [more ▼]

In the univariate context, coefficients of variation (CV) are widely used to compare the dispersion of a variable in several populations. When the comparison is based on p characteristics however, side-by-side comparison of marginal CV’s may lead to contradictions. In this talk, we present a multivariate coefficient of variation (MCV), defined as the inverse of the Mahalanobis distance between the mean and the origin, whose usefulness is demonstrated in some applications in finance and analytical chemistry. A full inference toolbox is provided for practitioners: several parametric and non-parametric bias-correction methods are suggested and compared, and some exact and approximate confidence intervals are built and analyzed in a simulation study. Finally, in order to meet the practical need to compare MCV’s in K populations, some asymptotic statistical testing procedures are derived, whose finite-sample performance is empirically assessed. Throughout the talk, the robustness of the techniques will be discussed. As a by-product, a test statistic allowing to reliably compare K univariate CV’s even in presence of outliers will be outlined. [less ▲]

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See detailMusik erzählt. Elektronische Musik im zeitgenössischen Roman
Neelsen, Sarah ULg

Conference (2016, October 14)

Die Möglichkeit, seit Ende des 19. Jahrhunderts Klänge elektronisch zu produzieren und zu reproduzieren, hat die Wahrnehmung für die Materialität von Musik im Laufe des 20. Jahrhunderts immer weiter ... [more ▼]

Die Möglichkeit, seit Ende des 19. Jahrhunderts Klänge elektronisch zu produzieren und zu reproduzieren, hat die Wahrnehmung für die Materialität von Musik im Laufe des 20. Jahrhunderts immer weiter geschärft. Durch neue Studiotechniken wurde der Klang sicht- und greifbar gemacht, konnte zerschnitten und abgemischt werden. Autoren der Beat Generation eigneten sich diese Möglichkeiten an und versuchten sie, auf das Textmaterial anzuwenden. Doch was geschieht genau, wenn Literatur elektrifiziert wird? Der Untersuchung dienen deutsche und französische Werke seit den 1980er Jahren, Werke von Rainald Goetz (Irre, Rave) und Virginie Despentes (Bye bye Blondie, Vernon Subutex), die neuere Entwicklungen der „electronic revolution“ (W.S. Burroughs) hervorheben. Beide Autoren bedienen sich der Nähe zur Musik um neue Kompositionsprinzipien, Raumgestaltungen und Figurenkonstellationen zu entwerfen, die in den jüngsten Werken – entgegen den Anfängen der Popliteratur – auch politische Stellungnahmen zum Umgang mit Rauschen und Geräusch skizzieren. [less ▲]

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See detailHow to measure renal function?
DELANAYE, Pierre ULg

Conference (2016, October 14)

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See detailMachine monstrueuse. Retour sur l'excès, l'exhibition et le gros plan
Jousten, Lison ULg

Conference (2016, October 14)

La communication propose de revenir sur certains aspects monstrueux du cinématographe. À la fois vectrice et créatrice d’un imaginaire intimement associé à la machine, il s’agit principalement d’envisager ... [more ▼]

La communication propose de revenir sur certains aspects monstrueux du cinématographe. À la fois vectrice et créatrice d’un imaginaire intimement associé à la machine, il s’agit principalement d’envisager comment cette « machine à voir » (Viva Paci, 2012) est aussi étroitement liée à la question de la monstruosité. [less ▲]

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See detailCase report autour de cristalluries médicamenteuses atypiques
Castiglione, Vincent ULg; GADISSEUR, Romy ULg

Conference (2016, October 14)

We report here the cases of uncommon-shaped crystals in patient's urine. The first one is a 73years-old man with massive crystalluria observed in his microscopic urinalysis on Sedimax° (Menarini ... [more ▼]

We report here the cases of uncommon-shaped crystals in patient's urine. The first one is a 73years-old man with massive crystalluria observed in his microscopic urinalysis on Sedimax° (Menarini). Observed crystals had various shape (needle, stick, Feather...). The patient was hospitalized because of lactic acidosis due to suicide attempt by medication overdose. The following medication had been taken: prazepam, acetaminophen, tramadol and Triumeq°, a new anti-retroviral association of dolutegravir, abacavir and lamivudine. Infrared analysis of dryed urine didn"t allow to identify any common stone component, nor any medication. We further discuss about the possible implication of dolutegravir in crystalluria in this patient. Secondly, we show several N-acetylsulfamethoxazol (sulfamethoxazol metabolite) urine crystals detected in microscopic urinalysis of various patients. All had uncommon shape and were sometimes associated to acute kidney injury [less ▲]

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See detailThe Terra Mosana Project
Billen, Roland ULg

Conference (2016, October 14)

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See detailTreg, Th17 and γδ T cells during normal and abortive pregnancy
Polese, Barbara ULg; Gridelet, Virginie ULg; Munaut, Carine ULg et al

Conference (2016, October 14)

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See detailExploring Metacognition as Support for Learning Transfer
Devlin, Marie; Draeger, John; Dvorakova, Lucie Sam et al

Conference (2016, October 14)

This presentation will share our efforts to investigate how metacognition might enhance the transfer of learning from one context to another. This topic is of relevance because the ability to transfer ... [more ▼]

This presentation will share our efforts to investigate how metacognition might enhance the transfer of learning from one context to another. This topic is of relevance because the ability to transfer one’s learning to new situations lies at the heart of lifelong learning and the employability of university graduates. [less ▲]

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See detailDual action of neuro-estrogens in the regulation of male sexual behavior
Cornil, Charlotte ULg

Conference (2016, October 13)

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See detailLeaving Gauss: extending Gaussian variance bounds to arbitrary targets
Clette, Emilie ULg; Swan, Yvik ULg

Conference (2016, October 13)

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See detailAccuracy of dichotomous logistic IRT models to estimate ability with multiple choice items
Magis, David ULg

Conference (2016, October 13)

This presentation focuse son multiple-choice items without any control or correction for guessing. Most often these items are recoded as binary outcomes (TRUE-FALSE) and logistic IRT models are calibrated ... [more ▼]

This presentation focuse son multiple-choice items without any control or correction for guessing. Most often these items are recoded as binary outcomes (TRUE-FALSE) and logistic IRT models are calibrated using these recoded data. The main purpose of this study is to highlight the limits of this approach by (a) proposing a simulation model to allow for guessing at various levels of ability, and (b) comparing the dichotomous approach to the use of nominal response model. Preliminary simulations indicate that none of the models are very accurate to estimate latent abilities accurately, though the nominal response model has fewer bias then the dichotomous models. [less ▲]

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See detailCurating Canons of Comics: Daniel Clowes and Art Spiegelman's 'Private' Museums
Crucifix, Benoît ULg

Conference (2016, October 13)

As guest of honor at the 2012 International Comics Festival in Angoulême, Art Spiegelman did not only have a retrospective exhibition devoted to his work, but was also invited to act as the curator of the ... [more ▼]

As guest of honor at the 2012 International Comics Festival in Angoulême, Art Spiegelman did not only have a retrospective exhibition devoted to his work, but was also invited to act as the curator of the CIBDI museum’s archive, producing his own ‘private’ museum, as suggested by the exhibition title Le Musée privée d’Art Spiegelman. Similarly, for Daniel Clowes’s retrospective exhibit in Columbus, the Wexner Center of the Arts hosted Eye of the Cartoonist: Daniel Clowes’s Selections from Comics History, based on Clowes’s curatorial choices from the Billy Ireland Cartoon Library and Museum. In each case, the cartoonist literally frames the history of comics and exhibits his personal canon of comics. As Spiegelman put it: “I have been allowed to highjack the Centre of Bande dessinée Museum to replace what is primarily the Francophone patrimony of comics with my own perverse and private map of what comics are.” This quote clearly embodies the dual facet of such exhibitions – collective and singular, shared and idiosyncratic – foregrounding the anchorage of individual graphic novelists within traditions of comics. Articulated around personal canons, these two exhibitions offer fresh perspectives to think about canonization in the comics world. Albeit focused on two 'canonized' graphic novelists, this case study nuances the auteurism of comics scholarship: not only are these exhibitions the result of collaborative work, they also recast the author in the role of curator. The key aspect of these exhibitions lies in a canonizing act of selection that circulates in varied material forms showcasing the authors’ influences. Mapping out how Clowes and Spiegelman frame their entanglement with the past of comics within the contexts of institutions that store its archive, I will examine the specificities of these exhibitions in relation to a body and style of historiography I call ‘authors’ histories of the comics.’ [less ▲]

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See detailHalf a century of Space Adventure at Centre Spatial of Liège
Rochus, Pierre ULg

Conference (2016, October 12)

Created by the University of Liège, the Centre spatial de Liège is a research centre dedicated to space instrumentation including environmental test facilities and high level laboratories. It works for ... [more ▼]

Created by the University of Liège, the Centre spatial de Liège is a research centre dedicated to space instrumentation including environmental test facilities and high level laboratories. It works for the European Space Agency (ESA), for the space industry and for regionals firms. From the beginning of its more than 50 years long history, CSL develops, assembles, calibrates and/or tests observation instruments and relevant sub-systems capable to operate in a harsh environment, in order to serve the demands of the space science. Space Systems Program focuses its effort to incorporate CSL into the teams dedicated for definition, design, integration and/or ground and in flight calibration of scientific payload missions, mainly under the final authority of the most prestigious Space Agencies (ESA, NASA, JAXA …). Today, more than 15 complex pieces of CSL technology have been launched in space, all of them operating nominally. Some of the most significant instruments made by CSL are: EIT solar telescope (SOHO), HI (STEREO), SWAP (PROBA 2), optical monitors with OM (Newton), OMC (INTEGRAL) and various contributions on PACS (Herschel), MIRI (JWST), UVS (JUNO) and COROT. In 2011, this strong heritage allows CSL to be awarded with the Extreme UV Imager (EUI) PIship of Solar Orbiter (ESA M1 science mission). For the Future, CSL is involved in the L1 JUICE, L2 ATHENA, M1 Solar Orbiter, M2 EUCLID, M3 PLATO, M4, S1 CHEOPS, S2 SMILE ESA missions as well as the SPP, ICON NASA Missions. The presentation will concentrate on the development of Space Instruments during this half a century of Space Adventure, focusing on Solar Physics and Space Weather Instruments. [less ▲]

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See detailMigration in Extreme Climate Change Scenarios
Gemenne, François ULg; Blocher, Julia; de Longueville, Florence et al

Conference (2016, October 12)

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See detailSemiochemicals to control wireworms
Verheggen, François ULg

Conference (2016, October 12)

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See detailLiège Game Lab Showcase
Dozo, Björn-Olav ULg

Conference (2016, October 11)

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See detailStudy of the volatile organic compounds in the interaction between banana plants and the fungal disease Fusarium oxysporum f.sp. cubense Tropical Race 4 (FocTR4)
Berhal, Chadi ULg; De Clerck, Caroline ULg; LEVICEK, CAROLINA et al

Conference (2016, October 11)

Banana fruit (Musa sp.) ranks fourth in term of worldwide production, and has economical and nutritional key values. Cavendish is the popular and most dominant variety of the dessert banana group ... [more ▼]

Banana fruit (Musa sp.) ranks fourth in term of worldwide production, and has economical and nutritional key values. Cavendish is the popular and most dominant variety of the dessert banana group. Nowadays, it is endangered by the emergent race of the Panama disease, caused by Fusarium oxysporum f.sp. cubense TR4 (Foc TR4). Despite the importance of the Volatile Organic Compounds (VOCs), which are secondary metabolites with a high vapour pressure, and their role in plant protection, they have never been documented as a way to manage this disease on Cavendish. Thus, the aim of this PhD thesis is to study the VOCs in the specific interaction Cavendish/Foc TR4, as a way to manage this threat. Based on the work previously done with other plants at Gembloux Agro-Bio Tech, a protocol was optimized for the extraction of the banana plant’s VOCs. In parallel, models of in-vitro and in-vivo inoculations are under development to distinguish the VOCs emitted by the root zone and those emitted by the aerial part of the plant. The results of the first analysis showed that the majority of the Cavendish VOCs belongs to the terpenes group, as well as ketones and an organic ester. The VOCs specifically emitted during the plant-pathogen interaction will be studied more in depth by evaluating their effect on the plant and the pathogen. At long term, and depending on the results, agro-ecological applications of this knowledge could include breeding for new variety or combining banana with other plants expressing VOCs against Foc TR4, applying VOCs on field to stimulate plant defences or to contain the pathogen. [less ▲]

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See detailRelative positioning with Galileo E5 AltBOC code measurements
Deprez, Cécile ULg; Warnant, René ULg

Conference (2016, October 11)

For over a decade, Europe has started to develop its own Global Navigation Satellite System (GNSS). Initiated in 1999, the Galileo project finally materialized a few years ago, recently experiencing a ... [more ▼]

For over a decade, Europe has started to develop its own Global Navigation Satellite System (GNSS). Initiated in 1999, the Galileo project finally materialized a few years ago, recently experiencing a prompt expansion with the launch, in 2015 and 2016, of 8 satellites belonging to the Full Operational Capability (FOC) generation. Broadcasting new signals, with new modulations, the first studies addressing this system reveal promising level of precisions on both code and carrier phase observables. Still in test phase but already available for measurements, this recent system can be used to estimate positions. Among the new signals developed by the Galileo program, the Galileo E5 AltBOC, also known as Galileo E5a+b or Galileo E5, reveals great characteristics. Thanks to its particular AltBOC modulation, it allows more precise code and phase observations besides being less affected by multipath. These innovative performances should lead to more precise position estimations than with any other signal presently in use. In this master thesis, we compared the positions estimated with GPS and Galileo on their different frequencies (L1, L2, L5 for GPS and E1, E5a, E5b and E5 AltBOC for Galileo). We combined the observations made by the receivers belonging to the University of Liège (2 Trimble NetR9 receivers, 1 Septentrio PolaRxS receiver and one Septentrio PolaRx4 receiver) in double differences (DD) combinations using various configurations (zero baseline (ZB), short baseline (SB) and medium baseline (MB)). It turns out that Galileo E5 AltBOC outperforms all other signal in terms of observation precision (estimated in a DD SB configuration in order to remove atmospheric and clock error sources affecting the signal). Regarding the precision obtained on the computed positions, we could reach a few decimetres with Galileo E5 code pseudoranges on baselines up to 25 kilometres. [less ▲]

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See detailTo Speak, or Not to Speak: That Is the Question. Contrapuntal Shakespearean Intertextuality in Gail Jones's Sorry
Belleflamme, Valérie-Anne ULg

Conference (2016, October 10)

In Alev Adil’s words, Australian novelist and essayist Gail Jones has chosen “to speak of silence, not of the silenced. [Her novel Sorry (2007)] is careful not to ventriloquize Aboriginal histories. The ... [more ▼]

In Alev Adil’s words, Australian novelist and essayist Gail Jones has chosen “to speak of silence, not of the silenced. [Her novel Sorry (2007)] is careful not to ventriloquize Aboriginal histories. The elegiac and occluded nature of [its] narrative is an ethical as much as aesthetic choice” (qtd. in Herrero 2011, 287). Ironically perhaps, the novel starts by immediately inviting the reader to be silent and to perk up his or her ears in order to listen to this story “that can only be told in a whisper” (3). This, I argue, functions as a kind of warning for readers, that throughout their reading they need to be attentive to, and perhaps search for, the hushed tone which this story demands and which suggests the existence of some deeper, underlying truth. In an article tackling the issue of writing and justice in the Australian context, Jones vindicates this form of obliquity, confessing that Sorry has “a political-allegorical aspect – as one would expect, claiming such a title”, yet that “it is not centrally concerned with representing the Stolen Generations. As a white Australian, it would be presumptuous to do so and it would risk appropriation of others’ painful experience” (2008, 84). She also contends that non-Indigenous writers who wish “to engage with ‘stolen’ matters must write from another perspective and perhaps use forms of indirection that will signal a refusal to ‘claim’ the experience of others” (79). Interacting with Russell West-Pavlov’s view of the Shakespearean intertext in Sorry as a “self-critical element of White usurping culture but also, possibly, as a collaborator in a coalition against the ongoing oppression of the Indigenous population which characterizes contemporary Australia” (2015, 391), my paper will examine how Jones exploits defamiliarizing techniques in order to undermine the dominant European discourse (as encoded in the Shakespearean text) without assuming an Aboriginal perspective. Her aim is to facilitate the emergence of an incipient, tentatively-defined counter-discourse sufficiently attuned to the specific realities of Australia. The paper argues that by adopting an Australian cultural perspective designed to decentre Shakespeare Jones hopes to reconcile history and writing, but also the divided aspects of White Australia’s twofold identity at a time of profound national changes. Works Cited Belleflamme, Valérie-Anne. 2015. “‘Shakespeare was wrong’: counter-discursive intertextuality in Gail Jones’s Sorry.” Journal of Postcolonial Writing 51 (6): 661-671. Herrero, Dolores. 2011. “The Australian Apology and Postcolonial Defamiliarization: Gail Jones’s Sorry.” Journal of Postcolonial Writing 47 (3): 283-295. Jones, Gail. 2007. Sorry. London: Harvill Secker. Jones, Gail. 2008. “Speaking Shadows: Justice and the Poetic.” In Just Words?: Australian Authors Writing for Justice, edited by Bernadette Brennan, 76-86. St Lucia: University of Queensland Press. West-Pavlov, Russell. 2015. “Shakekspeare Among the Nyoongar: Post-Colonial Texts, Colonial Intertexts and their Imbrications – Macbeth in Gail Jones’s Sorry.” Zeitschrift fur Anglistik und Amerikanistik 63 (4): 391-410. [less ▲]

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See detailCelestina, del personaje reubicado al mito
Francois, Jeromine ULg

Conference (2016, October 10)

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See detailAnorexie et régulation émotionnelle
Englebert, Jérôme ULg

Conference (2016, October 08)

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See detailPARTNERSHIP with a glass wool producer for accurate LCA
Gerbinet, Saïcha ULg; Briard, Vincent; Pigeolet, Jean-Pierre et al

Conference (2016, October 08)

This presentation aims to illustrate how a partnership with the private sector can progressively become a win-win collaboration. Taking into account the environmental aspects in the building sector has ... [more ▼]

This presentation aims to illustrate how a partnership with the private sector can progressively become a win-win collaboration. Taking into account the environmental aspects in the building sector has become unavoidable. Knauf Insulation, a glass wool producer, has started to evaluate the environmental impacts of it manufacturing processes for drafting Environmental Product Declarations (EPD). This first objective was mainly intended to respond to a market demand for EPDs of their products. Our first contact with Knauf Insulation was for drawing up EPDs of 10 of their products. This first work has shown the need for a more flexible tool to allow rapid life cycle analyze of a product and publication of an EPD, and thus respond quickly to market demands. The need of a better understanding of the environmental impact of the process is also underline to allow to follow the evolution of the impact and to reduce it. All the glass wool products are manufactured in a similar way, only a few parameters, such as density or thickness, are modified in the process to produce a given product. We have therefore chosen to develop a generic model that can be used for all glass wool products produced by Knauf Insulation, in any of their plants. The LCA model was developed in GaBi, and thanks to a positive collaboration with Thinkstep, the software editor, and Knauf Insulation, the model is finetuned for the production plants. Knauf Insulation can use this model for EPDs as well as for Ecoconception. The model is built to be user-friendly: the user sets the product characteristics and dimensions, and in which plant (or combination of plants) it is produced. The data collection is performed by Knauf Insulation with our support. When new data are available, the model is easily updated. Therefore the model is easy to use, easy to update and accurate. Thanks to this positive experience the collaboration is ongoing. The same modelling aspects have been adapted to another insulation product from Knauf Insulation, stone wool. Furthermore, Knauf Insulation has developed a new binder for its products called ECOSE and produced from renewable materials (biomass), and is formaldehyde-free. The previous LCA underline the need of a better characterization of ECOSE in a LCA perspective. Therefore, a PhD is underway to evaluate the impacts of this binder and its applications (glass wool products) as well as its future applications. This story underlines how the partnership between the university and private sector is a win-win situation, staring from EPD and leading to much needed fundamental research, more accurate EPDs and better awareness of the environmental impacts in general, when the private sector is convinced with the interest of the demarche. [less ▲]

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See detailShaping (im)mobility: borders, camps, and non-state actors
Da Silva, Amanda Carolina ULg

Conference (2016, October 07)

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See detailThe reinforcement opportunitie of a cross-border train connection: the example of the railway between Liège (Belgium) and Maastricht (Netherlands)
Wilmotte, Pierre-François ULg; Lambotte, Jean-Marc ULg; Cools, Mario ULg et al

Conference (2016, October 07)

The research topic was to understand why it is so difficult to increase the train frequency on Liège - Maastricht line. The outline of our presentation was structured in 4 parts : the (current, potential ... [more ▼]

The research topic was to understand why it is so difficult to increase the train frequency on Liège - Maastricht line. The outline of our presentation was structured in 4 parts : the (current, potential and future) supply, the (current, potential and future) demand, some options to solve the deadlock between the Belgian's and the Dutch's outlooks and the conclusions. [less ▲]

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See detailIrrigated food systems in Maradi Republic of Niger: A comparison between operating accounts
Andres, Ludovic ULg; Dambo, Lawali; Bode, Sambo et al

Conference (2016, October 07)

In Niger, most food systems are based on pluvial crops (millet, sorghum and cowpea). However, during the last decade, agricultural policy and technical and financial partners focused on increasing the ... [more ▼]

In Niger, most food systems are based on pluvial crops (millet, sorghum and cowpea). However, during the last decade, agricultural policy and technical and financial partners focused on increasing the productivity of irrigated food products. The region of Maradi, located in the Central-South of Niger, is an area traditionally dedicated to agriculture. Some parts of this region are particularly adapted for irrigation, especially the Goulbi of Kaba and the Goulbi of Maradi valleys. The goal of this study is to establish the socio-economic situation of the main irrigated food productions, based on the following indicators: (i) the crop management technics used; (ii) the results of the operating account; and (iii) the comparison between the village and the adoption of new technic (farmer field school). This paper is based on direct surveys conducted in three areas of the Maradi’s region: Soumarana (commune of Safo, department of Madarounfa); N’Yelwa (commune of Madarounfa, department of Madarounfa); Madarounfa (commune of Madarounfa, department of Guidan Roumdji). The software used is Minitab and Excel. The results highlight a good perspective for the irrigation system but this food system is conditioned by the petroleum price and some other input (fertilizer and seed). The operating accounts show that irrigation is a non-negligible income source, which increases the resilience of the farmers. [less ▲]

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See detailIntroduction
Masson, Christophe ULg

Conference (2016, October 07)

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See detailQuelques réflexions méthodologiques sur les abandons de sanctuaires en Grèce antique
Palamidis, Alaya ULg

Conference (2016, October 07)

The archeological identification of the abandonment of cults faces two main difficulties. First, the absence of material posterior to a certain date in an excavated sanctuary does not necessarily mean ... [more ▼]

The archeological identification of the abandonment of cults faces two main difficulties. First, the absence of material posterior to a certain date in an excavated sanctuary does not necessarily mean that the sanctuary was abandoned. Secondly, the abandonment of a sanctuary does not necessarily mean the abandonment of the cult, since the cult may have been transferred to another sanctuary. [less ▲]

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See detailVariations sur le moi: Mach, Musil, Hofmannsthal
Zincq, Aurélien ULg

Conference (2016, October 07)

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See detailEnvironmental impact of glucose: influence of the datasets choice on LCA results
Gerbinet, Saïcha ULg; Belboom, Sandra ULg; Léonard, Angélique ULg

Conference (2016, October 06)

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be ... [more ▼]

The aim of this study is to have a good understanding of the environmental impact of glucose production. Glucose is generally produced from corn or wheat. Since agricultural processes are known to be difficult to evaluate by LCA, the results obtained with two different LCA databases, Gabi and Ecoinvent, are compared in this work. The production of glucose from raw materials can be divided in two steps: the agricultural steps allowing the plant production, and the conversion step including the extraction of the starch from the plant and its hydrolysis into glucose. Preliminary results underline the high impact of the agricultural step, so a special attention has been paid to these data. Specific Belgian data collected by the Walloon Agricultural Research Centre (CRA-W) (2014) [1] have been used as primary data (yield, amount of fertilizers, etc.), either using Ecoinvent or GaBi datasets background data to model fertilizers, diesel consumption, etc. A third model was built using only data available in Ecoinvent for corn and wheat cultures. For the conversion steps, literature data have been used along with some industrial data. As few studies are available in the literature concerning starch hydrolysis, the focus has been placed on data validation (mass balance checks, cross-reference information, etc.). Based on these multiple sources, it is possible to compare the LCA results for the production of 1 kg of glucose for three different cases, summarized in the following table. The results obtained using these three models will be presented, at both the inventory and the impact assessment steps. They show significant differences and highlight the need to understand in depth the involved assumptions when developing the datasets, in addition to the ones adopted for the inventory. [less ▲]

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See detailThe project PhytoKat in Lubumbashi, D.R. Congo: conditions for the integration of traditional medicine in modern healthcare
Bakari, A.; Meerts, P.; Vandenput, Sandrina ULg et al

Conference (2016, October 06)

The D.R. Congo still faces multiple health problems. Notably the access to conventional medicine is limited; as in most Sub-Saharan countries, traditional medicine is the primary, and often the only ... [more ▼]

The D.R. Congo still faces multiple health problems. Notably the access to conventional medicine is limited; as in most Sub-Saharan countries, traditional medicine is the primary, and often the only, source of care for a majority of the population and the WHO advocates its recognition and modernization for primary health care. This pilot project aims to establish the necessary foundation for progress in this direction in Katanga: • The conditions for the introduction of traditional practices in modern medicine will be evaluated (quality of the practitioners and diagnostics; quality, efficiency, safety of treatments); • Many plants used in traditional medicine have already been documented in Katanga; certain traditional practices have been validated by the identification of active compounds. The project proposes to deepen the botanical, pharmacological, chemical and agronomic study of these interesting species; • In the context of regional erosion of plant diversity, excessive harvesting of some vulnerable medicinal species could represent a serious threat; developing a conservation strategy is urgent and requires an inventory of their current distribution. Through 5 doctoral theses in pharmacognosy, biomedical and agronomic sciences, the project will aim at correcting the weaknesses identified by the recent Joint Context Analysis, performed in R.D. Congo at DGD initiative, for the domain environment/natural resources: "Lack of information, knowledge and awareness among decision makers and local communities on the benefits of biodiversity-related development". [less ▲]

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See detailIntroduction au Colloque "Du vivant au social: les semences en question"
Hecquet, Corentin ULg; Hermesse, Julie

Conference (2016, October 06)

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See detailDevelopment of polymer-based systems for healthcare applications
Grandfils, Christian ULg

Conference (2016, October 06)

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See detail“Avoiding disease has never favoured health”: Governance of plant health and management of crop diversity -the case of bean health management among members of the association Croqueurs de Carottes
Klaedtke, Stephanie ULg; Chable, Véronique; Stassart, Pierre M ULg

Conference (2016, October 06)

In 2010, a hot debate on bean seed quality in the framework of a European Research project led a French-speaking association of artisan seed companies to challenge EU "quarantine" measures on the ... [more ▼]

In 2010, a hot debate on bean seed quality in the framework of a European Research project led a French-speaking association of artisan seed companies to challenge EU "quarantine" measures on the bacterial agents of Common Bacterial Blight (CBB), a seedborne disease of common bean. The artisan seed companies (artisans semenciers) forming the association Croqueurs de Carottes are small enterprises producing and marketing seed of open-pollinated vegetable varieties from the public domain, based on networks of organic seed growing farmers. In doing so, the artisan seed companies contribute to the dynamic conservation of crop diversity and to making this diversity accessible to home and market gardeners. For the Croqueurs as member of the French Réseau Semences Paysannes (peasant seed network), this commercial activity also forms part of a wider movement of seed re-appropriation. The research presented here departs from the hypothesis that the dispute on the CBB "quarantine" measures reveals a more general discrepancy: The rationale behind the plant health management practices of the seed artisans differs from the rationale behind the quarantine measures which they face in the form of phytosanitary inspections. In the aim of specifying the plant health management practices of the artisan seed companies, these practices and the rationale behind it will be unfolded as an actor-network. In terms of actor network theory (ANT), the contestation of quarantine measures on common bean by the Croqueurs in France reveals the actor-network behind their bean health management. Disturbed by the quarantine measures, the network becomes apparent in a process of reassemblage. The network behind this particular plant health management will be unfolded by taking controversial elements of the implementation of quarantine measures as a starting point, such as the official protocol for the detection of bacterial pathogens on seeds and the competences of inspectors in charge of phytosanitary seed inspections. The description of the plant health management by artisanal seed companies will be based on the practices of the Croqueurs in France and Belgium, but also on the practices of two artisanal seed companies in Germany. By contrast, discrepancies with the dominant plant health management rationale will appear. Whereas the "quarantine" measures aim at eradicating CBB in the EU by admitting only CBB-free bean seed on the seed market, the artisan seed companies rather seek to live with plant diseases and integrate plant pathogens in their production systems. For the latter, managing crop and seed health also goes through managing sound environments. In the framework of evolving EU plant regulations and a reorganisation of phytosanitary seed inspections in France, the debates on plant health management in artisanal seed companies persist. Although much has been written and publically debated by non-profit organizations, small-scale seed companies and researchers concerning EU seed legislations, but the role of phytosanitary regulations in the dynamic conservation of crop biodiversity has received little attention. The research presented here represents a first step in addressing this question in the scientific arena. [less ▲]

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See detailMusic(ality) in Phillips’s Fiction
Mascoli, Giulia ULg

Conference (2016, October 06)

Caryl Phillips is a contemporary Anglo-Caribbean author. Phillips’s radio play on Marvin Gaye entitled “A Long Way From Home”, the television documentary “Darker than Blue” that he made about Curtis ... [more ▼]

Caryl Phillips is a contemporary Anglo-Caribbean author. Phillips’s radio play on Marvin Gaye entitled “A Long Way From Home”, the television documentary “Darker than Blue” that he made about Curtis Mayfield, and his novel Dancing in the Dark, which is entirely devoted to Bert Williams, a famous vaudeville entertainer, are just a few examples testifying to his interest in popular music. Surprisingly, although the musicality of Phillips’s writing has been mentioned in passing (Ledent & Tunca xiv) and the author himself has declared that his only model, if any, was music (Clingman 108), a detailed study of what exactly characterizes this musicality or what purposes it serves has yet to be undertaken. What I would like to do in this presentation is not only to conduct an in-depth examination of this pervasive musicality but, more importantly, to attempt to define what musicality is in the first place. [less ▲]

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See detailHTA du patient transplanté : quelles données pour adapter le traitement?
Krzesinski, Jean-Marie ULg

Conference (2016, October 06)

Hypertension en Transplantation Rénale: conclusions •L’HTA est fréquente , souvent multifactorielle et sa prise en charge est importante pour le pronostic. •Le recours aux techniques de mesure de la PA en ... [more ▼]

Hypertension en Transplantation Rénale: conclusions •L’HTA est fréquente , souvent multifactorielle et sa prise en charge est importante pour le pronostic. •Le recours aux techniques de mesure de la PA en dehors de la consultation est nécessaire. •La cible de la PA est d’autant plus basse que l’on s’éloigne de la date de la Transplantation (cible de la PA proposée <130/80 mmHg après le 1ier trimestre). •Rôle de l’alimentation dans l’approche thérapeutique et des AC DHP et Bêtabloquant. Changer l’IS peut être bénéfique. •Si résistance au traitement, rechercher une cause secondaire, une mauvaise adhérence à la diététique et aux médicaments. [less ▲]

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See detailEmergence d'une catégorie de "non ayant droit". La Belgique et la réforme de l'assurance-chômage
Remy, Céline ULg; Senhadji, Khadija

Conference (2016, October 06)

Les récentes évolutions de l’assurance-chômage en Belgique font apparaître des vagues d’exclusions ‘automatiques’ de chômeurs allocataires d’insertion, ce qui étend par conséquent la catégorie de « non ... [more ▼]

Les récentes évolutions de l’assurance-chômage en Belgique font apparaître des vagues d’exclusions ‘automatiques’ de chômeurs allocataires d’insertion, ce qui étend par conséquent la catégorie de « non ayant-droit ». Cette dernière constitue un réel défi pour les institutions publiques car ces personnes disparaissent des radars institutionnels. Nous nous intéressons plus particulièrement au cas bruxellois où dès 2004, deux outils d’accompagnement ont été mis en place tout spécialement pour encadrer les jeunes chercheurs d’emploi. Une analyse chiffrée de la situation de ce public-cible encadré par les services publics bruxellois permettra de mettre en évidence le processus de (dé)régulation du marché de l’emploi. [less ▲]

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See detailLes nouvelles recommandations 2016 dans l’insuffisance cardiaque & Présentation d'une étude de Télémédecine
Troisfontaines, Pierre; D'ORIO, Virginie ULg; Melissopoulou, Maria et al

Conference (2016, October 06)

Epidémiologie, diagnostic et Approche médicamenteuse. Dr M. Melissopoulou (CHR de liège) • Approche non médicamenteuse & comorbidités. Dr Troisfontaines (CHR de Liège) • Insuffisance cardiaque aigue ... [more ▼]

Epidémiologie, diagnostic et Approche médicamenteuse. Dr M. Melissopoulou (CHR de liège) • Approche non médicamenteuse & comorbidités. Dr Troisfontaines (CHR de Liège) • Insuffisance cardiaque aigue & Insuffisance cardiaque terminale. Dr V. D’Orio (CHU de Liège) • Présentation de l’étude Télémédecine Dr A. Ancion (CHU de Liège) [less ▲]

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See detailGastronomy, a cultural heritage for our present and future time. An important protection for our territory, our agriculture and our welfare
Aresu, Anna Rosa ULg

Conference (2016, October 06)

The environment, the beautiful landscapes, the good air, the agriculture with its local products are the most important assets we have in our countries. They have great potential economically, but are not ... [more ▼]

The environment, the beautiful landscapes, the good air, the agriculture with its local products are the most important assets we have in our countries. They have great potential economically, but are not well exploited in some regions. In recent years the agri-food sector is the focus of interest of the development of these places, and we could start from this cultural heritage to develop our territory. The smaller agricultural realities, which cannot compete on price, must rely on the quality of their products with local, traditional and cultural characteristics (product placement techniques and production techniques), as a differentiating factor and position in market niches that reward their typicality and originality. Today the rediscovery of food as a journey, a path, a reference point for a culture of high-level, comprehensive, preserves the most important values for humans. Agricultural products, recipes, methods of preparation have been passed down for centuries, rediscovered and represented with great joy by those who are aware that good food should not be used exclusively to satisfy the palate and stomach.The products of our land are very important in building our ethnic identity, both individual and collective. For these reasons, they have an ethical, social, religious, and existential symbolism that goes beyond the economic sphere. And then we can write: gastronomy is culture. Today it is a desired and loved culture that moves the economy. Gastronomy is rich in history, tradition, customs, "know-how" that occurred across generations: how small producers live and grow, their work, mastery of men and women, respect for the land and for their territory. It’s intimately linked with our earth. [less ▲]

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See detailTowards a data model for (inter)textual relationships. Connecting Ancient Egyptian texts and understanding scribal practices
Polis, Stéphane ULg; Razanajao, Vincent ULg; Sojic, Nathalie ULg

Conference (2016, October 05)

The goal of this lecture is theory-oriented: we propose a conceptual data model that allows us to deal with complex textual relationships. It is empirically grounded in our experience of digital ... [more ▼]

The goal of this lecture is theory-oriented: we propose a conceptual data model that allows us to deal with complex textual relationships. It is empirically grounded in our experience of digital annotation of Ancient Egyptian texts. This paper is initially born out of the practical need of annotating and linking together hundreds of textual witnesses in the framework of the Ramses project (Polis et al. 2013; Polis & Winand 2013), the aim of which is to build and publish online (http://ramses.ulg.ac.be) the first richly annotated corpus of Late Egyptian texts (c. 1350-900 BCE). [less ▲]

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See detailQuelle(s) langue(s) pour l'enseignement supérieur ?
Winand, Jean ULg

Conference (2016, October 05)

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See detailExpanding the scope of cobalt-mediated radical polymerization towards the synthesis of novel poly(vinyl acetate-alt-tert-butyl-2-trifluoromethacrylate) alternating fluorocopolymers
Banerjee; Ladmiral, Vincent; Debuigne, Antoine ULg et al

Conference (2016, October 04)

Cobalt mediated radical polymerization (CMRP) is a nice technique to control the radical polymerization of vinyl acetate, VAc, but has never been reported on fluoromonomers. This presentation aims at ... [more ▼]

Cobalt mediated radical polymerization (CMRP) is a nice technique to control the radical polymerization of vinyl acetate, VAc, but has never been reported on fluoromonomers. This presentation aims at showing recent works on the use of CRMP to prepare well-defined unprecedented 1:1 alternating fluorocopolymers with narrow dispersity (≤1.3) comprised of a polar monomer (VAc) and a non-homopolymerizable fluoromonomer (tert-butyl-2-trifluoromethacrylate, MAF-TBE), under mild conditions.[1] The resulting poly(VAc-alt-MAF-TBE) copolymers have a precise 1:1 alternating structure over a wide range of the comonomer feed compositions in CMRP conditions as well as under free radical polymerization conditions,[2] as confirmed by NMR spectroscopies. Kinetics of radical copolymerization led to their reactivity ratios: rVAc = 0.014; rMAF-TBE = 0 at 40 °C). Simple adjustments of the monomer feed ratio and of the polymerization time, allow the synthesis of well-defined alternating copolymer or of novel poly(VAc- alt- MAF-TBE)-b-PVAc block copolymer composed of an alternating block and of a PVAc block. The block copolymer exhibited two glass transition temperatures (Tg) at 43 and 67 °C, which correspond to those of PVAc segment and poly(VAc-alt-MAF-TBE) alternating sequences, respectively. In contrast, the poly(VAc-alt-MAF-TBE) alternating copolymer displayed only one Tg at 40 °C. For the first time, CMRP of fluorinated monomer was achieved and this fluorine-containing alternating monomer system provides access to a wide range of new polymer materials, under progress. [less ▲]

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See detailLa communauté germanophone et la frontière orientale de Belgique : géohistoire et enjeux
Robelin, Cyril ULg; Brassart, Dorothée

Conference (2016, October 01)

Face aux querelles linguistiques entre Francophones et Néerlandophones qui paralysent le pays, la communauté germanophone de Belgique tente de trouver sa place dans un état multilingue. Pays de marche ... [more ▼]

Face aux querelles linguistiques entre Francophones et Néerlandophones qui paralysent le pays, la communauté germanophone de Belgique tente de trouver sa place dans un état multilingue. Pays de marche fondé lors de la Révolution de 1830, la Belgique a eu du mal à définir ses limites. Si la frontière méridionale avec la France n'est jamais vraiment remise en cause, celles du Nord et de l'Est sont davantage problématiques. La limite septentrionale fut fixée en 1839, lors du traité des XXIV articles de Londres, même si elle a eu du mal à renoncer aux bouches du Rhin ou au Limbourg. La frontière de l'Est reste épineuse. Le Grand Duché de Luxembourg demeure jusqu'à la Deuxième Guerre mondiale une revendication vive du Royaume. Celles de l'Allemagne sont également très critiquées. Pendant tout le XIXe siècle elle fut dans une large mesure largement fantasmée. Elle fut d'abord le cadre d'une expérience politique inédite, le Territoire neutre de Moresnet. Né d'un contentieux du traité de Vienne (1815), ce village et son gisement de cuivre furent coadministrés par le Royaume des Pays-Bas (puis la Belgique à partir de 1830) et la Prusse (devenue Allemagne en 1870). Pendant un siècle, ce territoire neutre réinvente totalement la notion de frontière. En effet, ici il s'agit non pas d'une ligne, mais d'une surface. Entité sans loi bien définie, elle devient un lieu totalement imaginé. Elle fut alors le havre supposé de toutes les canailles de l'Occident (« Far West » européen). Un des premiers casinos à voulu s'y installer. On a même voulu faire de Moresnet le premier territoire espérantiste du monde afin de dépasser les questions linguistiques. Les représentations de la frontière belgo-germanique sont polyformes tout au long du XIXe siècle. On la définit comme une zone de transition avec ses nombreux contrebandiers, une zone interlope (entre deux états, voire entre deux mondes comme en témoigne la présence de vampires), mais aussi une zone de fermeture avec l'avénement de l'Etat-nation et du nationalisme. A partir de 1914, elle devient un enjeu de géopolitique européenne. Il s'agit de la première frontière violée par l'Allemagne en août. Dès la fin du conflit, la Belgique souhaite annexer les districts de Moresnet, d'Eupen et de Malmedy avançant l'argument historique (ils faisaient partie des Pays-Bas espagnols) ou linguistique (Malmedy est largement francophone). A Versailles, la Belgique essaie de se faire entendre en s'appuyant avant tout sur le concours de Georges Clémenceau. Même si la délégation allemande tente de repousser cette annexion, le traité final attribue tous ces districts à la Belgique. Pour la première fois de son histoire le territoire de la Belgique s'étend. Un plébiscite est tout de même organisé en 1920, mais à main levée. L'écrasante majorité des électeurs se prononce pour un rattachement au royaume. Ils deviennent citoyens belges en 1925. Toutefois, la réorientation de cette périphérie vers Bruxelles n'est pas sans poser des problèmes techniques. Pendant les années 20 et 30, cet espace frontalier favorise l'irredentisme allemand, à tel point qu'on le nomme parfois « l'Alsace-Lorraine » belge. Ils sont même intégrés au Reich en 1940. A la fin de la Deuxième Guerre mondiale, ils font définitivement leur retour au territoire belge. L'état fait tout pour intégrer pleinement ces marges et cette communauté pleinement au sein de la société. Dans le cadre des querelles linguistiques et de la question du fédéralisme qui déchirent le royaume, les Germanophones restent discrets. Néanmoins, dans le cadre des lois linguistiques de 1963, une région de langue allemande est créée et reconnue : la Belgique reconnaît trois communautés linguistiques. Pourtant, part entière de la province de Liège, elle s'individualise au sein de la communauté culturelle germanophone de Belgique à partir des années 70 et 80, avec ses propres compétences, son gouvernement, son parlement, ses medias, sa police etc. Souvent loin du centre Bruxellois et de ses problèmes, elle semble davantage se tourner vers l'acteur européen, notamment par l'intermédiaire de l'eurorégion Rhin-Meuse. Ainsi, cette géohistoire de la frontière de l'Est et de la communauté germanophone de Belgique permet une réflexion intéressante sur les limites politiques mais aussi linguistiques à la fois à l'extérieur comme à l'intérieur du pays. Périphérie de la Belgique, elle n'en demeure pas moins un arbitre qui veut jouer pleinement son rôle au sein du Royaume et de l'Europe de demain. [less ▲]

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See detailOPTIMIZATION OF A FULLY AUTOMATED ELECTROPHORETICALLY MEDIATED MICROANALYSIS SYSTEM FOR CYP1A1 ACTIVITY MONITORING
Farcas, Elena ULg; Servais, Anne-Catherine ULg; Lamalle, Caroline et al

Conference (2016, October 01)

Objective of the study Since CYP1A1, a member of cytochrome P450 superfamily, has been described to be over expressed in various types of cancer, our study was focused on the optimization of a fully ... [more ▼]

Objective of the study Since CYP1A1, a member of cytochrome P450 superfamily, has been described to be over expressed in various types of cancer, our study was focused on the optimization of a fully automated system for the monitoring of this particularly interesting enzyme. Moreover, the potentiality of this approach to screen CYP1A1 inhibitors was investigated. Materials and methods The experiments were carried out on a HP3DCE system using an on-column DAD. The EMMA procedure was performed by injecting a plug containing the co-factor(NADPH) and the substrate(7-ethoxycoumarin) between two plugs of CYP1A1 supersomes. The reaction was triggered by the application of a voltage switch. The voltage was then turned off to allow the metabolic reaction to occur. The separation of the components was then performed. Results Satisfying results were obtained using CYP1A1 at a concentration of 200 pmol/mL, while the incubation time was settled to 15 min. A DoE was performed to find the best mixing conditions. The amount of metabolite obtained was comparable to the one detected after conventional off-line metabolization. The ability of our system to monitor CYP1A1 inhibition was then proven with apigenin, a well-known CYP1A1 inhibitor. Conclusions The present study describes the development of a fully automatized in-capillary method for CYP1A1 activity monitoring and proves the potentialy of our system to be used for the screening of CYP1A1 inhibitors. The advantages of performing inline metabolization assays are mainly the miniaturization and the automatization of the process. Besides, the reagents consumption is drastically reduced due to the injection of few tens of nanoliters. [less ▲]

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See detailThe Eating Context Drawing Test : clinical implications: a case study of an adolescent obese girl
Lepot, Aurélie ULg; D'Amore, Salvatore; Onnis, Luigi

Conference (2016, October 01)

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See detailUsing PCB signatures and enantiomer fractions for source identification and to age date exposure
Megson, D; Focant, Jean-François ULg; Patterson, D et al

Conference (2016, October)

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See detailWavelet series representations for pathwise Young integrals
Esser, Céline ULg

Conference (2016, October)

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See detailA review of Silurian dispersed spore assemblages from the Arabian Plate: biostratigraphy and palaeogeography
Wellman, CH; Steemans, Philippe ULg; Breuer, P et al

Conference (2016, October)

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See detailMise en oeuvre de l'intermédialité dans l'élaboration d'un théâtre politique
Delhalle, Nancy ULg

Conference (2016, October)

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See detailSmall-angle scattering analysis of empty or loaded hierarchical porous materials
Gommes, Cédric ULg

Conference (2016, October)

Small-angle scattering (SAXS or SANS) is one of the few experimental methods available for the nanometer-scale study of physicochemical phenomena inside porous solids. Its potential, however, is often ... [more ▼]

Small-angle scattering (SAXS or SANS) is one of the few experimental methods available for the nanometer-scale study of physicochemical phenomena inside porous solids. Its potential, however, is often limited by the lack data analysis methods to convert scattering data into real-space structural information. This is notably the case for most porous materials of practical interest, which exhibit a hierarchical structure with micro, meso, and macropores, with often a secondary material confined in the pores, such as in supported catalysts, as well as fuel-cell and battery materials. Here, we discuss a general SAXS data analysis methodology for this type of material. Assuming that each structural level is statistically independent from the others and has a distinct characteristic length scale, compact mathematical expressions are derived for the scattering of the entire hierarchical structure [J.Phys.Chem.C, in press]. The method is illustrated with the SAXS analysis of SBA-15 micro- and meso-porous silica loaded with copper nitrate, as well as to supported catalysts obtained after calcining that material. The SAXS analysis shows that the nitrate permeates both the micro and mesopores, while the metallic copper obtained after calcination is found only in the mesopores. Moreover, the spatial distribution of the metal depends on the specifics of the calcination, as confirmed by electron tomography [Angew.Chem. 54 (2015) 11804]. The general methodology will be of interest to anyone interested in the quantitative analysis of small-angle scattering data from empty or loaded porous solids, and from any type of hierarchical material. [less ▲]

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See detailCation-doped Cu2O as a transparent p-type semiconducting oxide with enhanced performances: A comparison between strontium and magnesium incorporation
Avelas Resende, João ULg; Brochen, Stéphane; Bergerot, Laurent et al

Conference (2016, October)

In the group of semiconducting metallic oxides, cuprous oxide (Cu2O) presents promising electrical and manufacturing features for a variety of applications as p-type transparent material suitable in the ... [more ▼]

In the group of semiconducting metallic oxides, cuprous oxide (Cu2O) presents promising electrical and manufacturing features for a variety of applications as p-type transparent material suitable in the domains of transparent electronics and photovoltaic cells. However Cu2O suffers from optical and electrical limitations, due to a relatively small bandgap of 2.17 eV and a fairly high resistivity (> 102 Ω.cm) in intrinsic thin films at room temperature. In this work, we successfully doped Cu2O thin films with different divalent cations, namely Sr and Mg, by metal-organic chemical vapour deposition. We compared the effects of each element on crystallographic structure, films morphology, electronic transport and optical transmittance. In both cases, the presence of the cation contributed to a higher stability of the Cu2O phase, reducing the appearance of CuO parasitic phase. Nevertheless, a SrCO3 phase was detected in the Sr doped system. In terms of electrical properties, the incorporation of Sr, up to 16%, reduced the resistivity down to 1Ω.cm, with a mobility of 16 cm2.V-1.s-1. Moreover, the incorporation of strontium also leads to the emergence of a with a deep acceptor level located around EA = 278 ± 21 meV above the top of the valence band. The concentration of this deep acceptor level, attributed to simple copper vacancies, drastically increases with the strontium content, due to a decrease of its formation energy. The effect on optical transmittance could not be detected. The Mg-doped Cu2O thin films were monophasic and showed a higher resistivity of 6.6 Ω.cm at an Mg concentration of 17%, due to the lower mobility, 1 cm2.V-1.s-1. Although, the presence of this dopant contributes for the highest charge-carrier density observed in this work, up to 8x1017 cm-3. As in the Sr case, this can be explained by a simple copper vacancy doping mechanism assisted by cation incorporation. Additionally, a slight increase of transparency is observed when compared to intrinsic Cu2O. The control of carrier concentration and mobility values by dopant concentration, as well as the improvements in phase stability and transparency are key factors for the application of this versatile p-type oxide in transparent electronics and solar cells applications. [less ▲]

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See detailFondements théoriques du GLM et présentation d'un outil d'intervention inspiré du GLM
Corneille, Serge ULg; Henrard, Noémie ULg

Conference (2016, October)

L'objectif de cette communication sera de présenter les principes théoriques fondamentaux du GLM ainsi que de présenter brièvement un outil d'intervention clinique particulièrement exemplatif de la ... [more ▼]

L'objectif de cette communication sera de présenter les principes théoriques fondamentaux du GLM ainsi que de présenter brièvement un outil d'intervention clinique particulièrement exemplatif de la logique d'intervention spécifique du GLM: l'inventaire des souhaits et préoccupations personnels [less ▲]

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See detailStudy of insulin aggregation by SEC and CGE
Demelenne, Alice ULg; Napp, Aurore ULg; Servais, Anne-Catherine ULg et al

Conference (2016, October)

Introduction: Insulin is a widely used antidiabetic drug, which regulates carbohydrate and fat metabolism of human body. This hormone is mostly formulated in hexamer by addition of zinc as an excipient ... [more ▼]

Introduction: Insulin is a widely used antidiabetic drug, which regulates carbohydrate and fat metabolism of human body. This hormone is mostly formulated in hexamer by addition of zinc as an excipient but only the monomeric form is active once dissociated in the bloodstream. Insulin is prone to unfold when submitted to denaturating factors as temperature, ionic strength, agitation and pH. An accumulation of unfolded proteins results in a high tendency to aggregate and form amyloid fibrils. A deposit of those fibrils in the subcutaneous tissue leads to a complication called “insulin-derived amyloidosis”. Moreover, during its production, insulin is often subjected to extreme conditions making lack of aggregates an important parameter to be controlled during its quality control. United States and European Pharmacopoeias use both size exclusion chromatography (SEC) to assess the level of covalent high molecular weight species. This technique is reproducible, and easy to use but shows many drawbacks including possible changes in the aggregates composition by dilution into the HPLC system or adsorption of sample onto the stationary phase. For those reasons other techniques have been considered in the literature for studying aggregation of insulin. Optical microscopy, electron microscopy, dynamic light scattering, turbidimetry, Fourier Transform infrared spectroscopy, Raman spectroscopy, thioflavin T fluorescence and circular dichroism spectroscopy are some of them. In any cases, the use of orthogonal techniques is essential to assess the relevance of the results. Results: In this study, insulin aggregates were generated after optimization of incubation conditions (pH, temperature, agitation…). Those aggregates were then analyzed by SEC and capillary electrophoresis (CE). CE shows many advantages in terms of sample and solvent consumption and enables analysis of samples under their native form. We showed that capillary gel electrophoresis (CGE) is a promising technique to analyze covalent aggregates of insulin due to the fact that it separates the aggregates according to their size and not to their size/charge ratio. The use of a laser-induced fluorescence detector was also found attractive to enhance the sensitivity of the method. [less ▲]

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See detailQuality Control Laboratories involved in the WHO Prequalification
Marini Djang'Eing'A, Roland ULg

Conference (2016, October)

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See detailJuno Ultraviolet Spectrograph (Juno-UVS) Observations of Jupiter during Approach
Gladstone, G. Randall; Versteeg, Maarten; Greathouse, Thomas K. et al

Conference (2016, October)

We present the initial results from Juno Ultraviolet Spectrograph (Juno-UVS) observations of Jupiter obtained during approach in June 2016. Juno-UVS is an imaging spectrograph with a bandpass of 70<λ<205 ... [more ▼]

We present the initial results from Juno Ultraviolet Spectrograph (Juno-UVS) observations of Jupiter obtained during approach in June 2016. Juno-UVS is an imaging spectrograph with a bandpass of 70<λ<205 nm. This wavelength range includes all important ultraviolet (UV) emissions from the H<SUB>2</SUB> bands and the H Lyman series which are produced in Jupiter's auroras, and also the absorption signatures of aurorally-produced hydrocarbons. The Juno-UVS instrument telescope has a 4 x 4 cm<SUP>2</SUP> input aperture and uses an off-axis parabolic primary mirror. A flat scan mirror situated near the entrance of the telescope is used to observe at up to ±30° perpendicular to the Juno spin plane. The light is focused onto the spectrograph entrance slit, which has a "dog-bone" shape 7.2° long, in three sections of 0.2°, 0.025°, and 0.2° width (as projected onto the sky). Light entering the slit is dispersed by a toroidal grating which focuses UV light onto a curved microchannel plate (MCP) cross delay line (XDL) detector with a solar blind UV-sensitive CsI photocathode. Tantalum surrounds the spectrograph assembly to shield the detector and its electronics from high-energy electrons. All other electronics are located in Juno's spacecraft vault, including redundant low-voltage and high-voltage power supplies, command and data handling electronics, heater/actuator electronics, scan mirror electronics, and event processing electronics. The purpose of Juno-UVS is to remotely sense Jupiter's auroral morphology and brightness to provide context for in situ measurements by Juno's particle instruments. Prior to Jupiter Orbit Insertion (JOI) on July 5, Juno approach observations provide a rare opportunity to correlate local solar wind conditions with Jovian auroral emissions. Some of Jupiter's auroral emissions (e.g., polar emissions) may be controlled or at least affected by the solar wind. Here we compare synoptic Juno-UVS observations of Jupiter's auroral emissions (~40 minutes per hour, acquired during 2016 June 3-30) with in situ solar wind observations, as well as related Jupiter observations obtained from Earth. [less ▲]

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See detailLa notion de disposition au traitement : un exemple original d’application du GLM dans le cadre de l’accompagnement psychologique d’un plan de restructuration industriel
Corneille, Serge ULg; Dubois, Luc

Conference (2016, October)

Comment le Good Lives Model a t il été appliqué dans le cadre d'un plan social industriel à ArcelorMittal Liège? Comment les intervenants se sont-ils adaptés aux besoins des usagers? Quelle est la ... [more ▼]

Comment le Good Lives Model a t il été appliqué dans le cadre d'un plan social industriel à ArcelorMittal Liège? Comment les intervenants se sont-ils adaptés aux besoins des usagers? Quelle est la responsabilité des intervenants dans la disposition au traitement des usagers? Comment faciliter l'accessibilité de l'intervention? [less ▲]

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See detailCassini UVIS Auroral Observations in 2016
Pryor, Wayne R.; Jouchoux, Alain; Esposito, Larry et al

Conference (2016, October)

In June of 2016, the Cassini Saturn orbiter began a series of high inclination orbits that will continue until September 2017 when the mission ends as Cassini enters the Saturn atmosphere. These orbits ... [more ▼]

In June of 2016, the Cassini Saturn orbiter began a series of high inclination orbits that will continue until September 2017 when the mission ends as Cassini enters the Saturn atmosphere. These orbits present excellent views of Saturn's polar regions suitable for auroral imaging at the closest distances to date, with the additional prospect of simultaneous particle and fields measurements within the sources of Saturn Kilometric Radiation (SKR) associated with ultraviolet auroral emissions and/or acceleration regions likely coinciding with them. We will present new Cassini Ultraviolet Imaging Spectrograph (UVIS) auroral images, spectra and movies obtained during the summer and fall of 2016 and put them in the context of auroral data collected since Cassini orbit insertion in 2004. Included in the new data will be UVIS south polar observations obtained simultaneously with Hubble Space Telescope observations of the north polar region on June 29, 2016 and August 19, 2016. [less ▲]

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See detailPotential for Composite Analysis in the Black Sea
Capet, Arthur ULg; Mason, Evan; Troupin, Charles et al

Conference (2016, October)

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See detailLa médiation interculturelle en milieu hospitalier
Cornet, Annie ULg; Coulée, Camille

Conference (2016, October)

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Peer Reviewed
See detailIT Manager Crisis Leadership: Do Prescriptions Given for General Management Apply?
Tapanainen, Tommi ULg; Hosoya, Ryuichi; Kamioka, Taro et al

Conference (2016, October)

Earthquakes are destructive events, but can also give opportunities for learning in crisis management for organizational information technology (IT) functions. In their role as stewards of company data ... [more ▼]

Earthquakes are destructive events, but can also give opportunities for learning in crisis management for organizational information technology (IT) functions. In their role as stewards of company data and IT, it is important that IT managers participate in company crisis management activities. However, the role of IT managers in crisis management is not well understood. This paper addresses IT manager actions during the crisis response effort, when appropriate actions need to be taken at short notice. Recognizing that few guidelines exist for IT manager leadership in these situations, we attempt to fit leadership recommendations intended for the general management to five cases of IT manager crisis response activity during earthquakes. We find that several recommendations from this set were relevant also for IT managers, showing that IT managers can learn from crisis response lessons derived from the general management. [less ▲]

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See detailUV emissions of Jupiter: exploration of the high-latitude regions through the UV spectrograph on NASA's Juno mission
Hue, Vincent; Gladstone, G. Randall; Versteeg, Maarten et al

Conference (2016, October)

The Juno mission offers the opportunity to study Jupiter, from its inner structure to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) planned for ... [more ▼]

The Juno mission offers the opportunity to study Jupiter, from its inner structure to its magnetospheric environment. Juno was launched on August 2011 and its Jupiter orbit insertion (JOI) planned for July 4th 2016, will place Juno in a 53.5 days capture orbit. A period reduction maneuver will be performed two orbits later to place Juno into 14-days elliptical orbits for the duration of the nominal mission, which includes 36 orbits. Juno-UVS is a UV spectrograph with a bandpass of 70 ≤ λ ≤ 205 nm, designed to characterize Jupiter UV emissions. One of the main additions of UVS compared to its predecessors is a 2.54 mm tantalum shielding, to protect it from the harsh radiation environment at Jupiter, and a scan mirror, to allow for targeting specific auroral regions during perijove passes. The scan mirror is located at the front end of the instrument and will be used to look at +/- 30° perpendicular to the Juno spin plane. The entrance slit of UVS has a dog-bone shape composed by three sections with field of views of 0.2°x2.5°, 0.025°x2.0° and 0.2°x2.5°, as projected onto the sky. It will provide new constraints on Jupiter’s auroral nightside morphology and spectral features as well as the vertical structure of these emissions. It will bring remote-sensing constraints for the onboard waves and particle instruments (JADE, JEDI, Waves and MAG). The ability to change the pointing will allow relating the observed UV brightness of the regions magnetically connected to where Juno flies with the particles and waves measurements. We will discuss the planned observations and scientific targets for the nominal mission orbital sequence, which will consist of three UV datasets per orbit. We will present the results from the first orbit. As Juno orbit evolves during the mission, we will also present how these objectives evolve over time. [less ▲]

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See detailUn chantier de modernisation des contextes de travail: le "New Way of Working" dans une compagnie d'assurances
Jemine, Grégory ULg

Conference (2016, October)

Dans les réflexions récentes portant sur l’organisation du travail en entreprise, nombreux sont les auteurs qui s’intéressent à la question des « nouvelles formes d’organisation ». Sous cette appellation ... [more ▼]

Dans les réflexions récentes portant sur l’organisation du travail en entreprise, nombreux sont les auteurs qui s’intéressent à la question des « nouvelles formes d’organisation ». Sous cette appellation se rassemblent des courants aux dénominations différentes (entreprise libérée, entreprise virtuelle, « holacracie »…) partageant cependant des principes fondateurs communs (tels que la flexibilité, l’autonomie du collaborateur ou encore la digitalisation des pratiques de travail). A travers une étude de trois mois au sein d’un département de protection juridique d’une importante compagnie d’assurances située à Bruxelles, nous étudions un projet de changement basé sur le « New Way of Working » (NWoW) – un chantier managérial se développant principalement aux Pays-Bas et en Belgique depuis une dizaine d’années, proposant une « nouvelle » vision des travailleurs dans le secteur tertiaire. Nous rendons compte des trois composantes clés du projet NWoW telles qu'il est problématisé dans notre étude de cas: les Bricks (travail en open-space, bureaux flexibles, travail à distance), les Bytes (nouveaux outils numériques, travail sans papier, connectivité) et les Behaviors (autonomie et responsabilité des collaborateurs, passage du contrôle à la confiance). Nous concluons par une réflexion structurée autour des "4C": dans ces nouveaux environnements de travail, de nouvelles questions émergent en termes de confiance, de contrôle, de cohésion et de coordination. [less ▲]

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See detailLe GLM appliqué à une population adolescente: quelles spécificités?
Devillers, Bérengère ULg; Henrard, Noémie ULg

Conference (2016, October)

L'intérêt croissant pour le "Good Lives Model" (Ward, 2001) a abouti, ces dernières années, à l'adaptation de celui-ci à diverses populations. L'objectif de cet atelier est d'exposer, dans un premier ... [more ▼]

L'intérêt croissant pour le "Good Lives Model" (Ward, 2001) a abouti, ces dernières années, à l'adaptation de celui-ci à diverses populations. L'objectif de cet atelier est d'exposer, dans un premier temps, l'adaptation du "Good Lives Model" à une population adolescente et, dans un second temps, d'ouvrir la discussion sur base de la présentation d'une vignette clinique. En s'inspirant des principes généraux du "Good Lives Model" très tôt dans le processus de prise en charge, les jeunes peuvent recevoir le message que, comme n'importe qui d'autre, ils se comportent de manière à rencontrer leurs besoins. Cette approche permet au jeune d'explorer, en lien avec les différents systèmes qui l'entourent, ses besoins particuliers et les forces qui pourraient lui permettre de les atteindre avec comme objectif secondaire une diminution des risques de récidive. [less ▲]

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See detailOceanBrowser: on-line visualization of gridded ocean data and in situ observations
Barth, Alexander ULg; Watelet, Sylvain ULg; Troupin, Charles et al

Conference (2016, October)

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See detailTransparent electrodes based on silver nanowire networks: from fundamental aspects to integration into device
Sannicolo, T.; Lagrange, M.; Xian, S. et al

Conference (2016, October)

The past few years have seen a considerable amount of research devoted to nanostructured transparent conducting materials which play a pivotal role in many modern devices such as: solar cells, flexible ... [more ▼]

The past few years have seen a considerable amount of research devoted to nanostructured transparent conducting materials which play a pivotal role in many modern devices such as: solar cells, flexible light-emitting devices, touch screens and flexible transparent thin film heaters. Metallic nanowire networks have recently been a heavily researched subject. Currently, the most commonly used material for such applications is Tin-doped Indium oxide (ITO). Although ITO exhibits very good physical properties, indium scarcity and brittleness have prompted the search for alternative materials. Among emerging transparent electrodes, silver nanowire (AgNW) networks appear as a promising substitute to ITO since these percolating networks exhibit excellent properties with sheet resistance of a few Ω/sq and optical transparency of 90%, fulfilling the requirements for many applications. It also shows very good electro-mechanical properties. In addition, the fabrication of these electrodes involves low-temperature process steps and upscaling methods, thus making them very appropriate for future use as TE for flexible devices. Our research is focused on the fundamental understanding of the physical phenomena taking place at the scales of both the network (macroscale) and the NW-to-NW junctions (nanoscale), and on the ability of AgNW networks to be integrated as transparent electrodes for different applications. In-situ electrical measurements performed during optimisation process such as thermal annealing provide useful information regarding the activation process of the junctions. This contribution aims at presenting a short overview of the main properties and applications of metallic nanowire networks, as well as the integration in devices. [less ▲]

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See detailPrésentation de l'Atlas national de Belgique - versions 1 à 3 et version numérique
Van Hecke, Etienne; Binard, Marc ULg; Donnay, Jean-Paul ULg

Conference (2016, September 30)

This presentation is divided into 3 parts: The "paper" version of the National Atlas, from the first to the third edition. The digital version of the National Atlas. A presentation of Geomatics Unit of ... [more ▼]

This presentation is divided into 3 parts: The "paper" version of the National Atlas, from the first to the third edition. The digital version of the National Atlas. A presentation of Geomatics Unit of the University of Liege, and its role in the realization of the 3rd edition of the National Atlas and its digital version. [less ▲]

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See detailLow Cost Concentrator Solar Array
Collette, Jean-Paul; Rochus, Pierre ULg; Hodgetts, Paul et al

Conference (2016, September 30)

Since the 70's, various researches have been undertaken to concentrate the solar flux on solar panels. In the 90's, concentrators with low concentration ratio appeared (C < 2.5), easily adapted to ... [more ▼]

Since the 70's, various researches have been undertaken to concentrate the solar flux on solar panels. In the 90's, concentrators with low concentration ratio appeared (C < 2.5), easily adapted to classical panels. From early 2000, the first commercial spacecrafts with such a technology were launched. Nevertheless, a gradual loss of power appeared and deep investigations concluded that this was due to various causes. From this incident, attention was paid to the contamination of the reflectors and more particularly to their operational temperature. Recently, in 2005, JAXA launched its small REIMEI scientific spacecraft, with two solar arrays equipped with a single lateral reflector. The good results achieved have triggered a new initiative in Europe to study a new concept of lightweight concentrator. The first results of this study including contamination and thermo-mechanical issues are presented. [less ▲]

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See detailRésultats d'une enquête sur la diffusion des thèses en droit
Bouhon, Frédéric ULg

Conference (2016, September 30)

Cette interviention, destinée aux doctorants et aux jeunes docteurs en droit, visait à présenter les résultats d'une enquête menée par l'auteur sur la diffusion des thèses en droit. Il s'agissait de ... [more ▼]

Cette interviention, destinée aux doctorants et aux jeunes docteurs en droit, visait à présenter les résultats d'une enquête menée par l'auteur sur la diffusion des thèses en droit. Il s'agissait de présenter les tendances suivies par les docteurs récemment diplômés dans les facultés de droit de Belgique francophone. L'intervention a été suivie d'un débat avec le public ainsi qu'avec des éditeurs présents. [less ▲]

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See detailStructure of the classe D β-lactamase OXA-29, an original dimer
Kerff, Frédéric ULg

Conference (2016, September 29)

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See detailInfluence of environmental factors on food intakes of nursing home residents: a survey combined to a video approach
Buckinx, Fanny ULg; Morelle, Alisson; Adam, Stéphane ULg et al

Conference (2016, September 29)

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See detailTransition to parenthood of lesbian parents: key processes and clinical implications
Scali, Thérèse ULg; D'Amore, Salvatore ULg; Haxhe, Stéphanie ULg et al

Conference (2016, September 29)

The transition to parenthood is a key process for understanding the development of family relationships in a systemic perspective. This process has been studied mostly in heterosexual families but very ... [more ▼]

The transition to parenthood is a key process for understanding the development of family relationships in a systemic perspective. This process has been studied mostly in heterosexual families but very few studies focus on families with same-sex families. This exploratory study analyzes the key passages of the transition from 17 lesbian headed families through a quantitative analysis of socio-demographic data, information about the coming-out, pair formation, project of the child, the child's arrival, as well as social and cultural pressures towards family and stressors. The main results show that the decision making to become parents is generally harmonious (70%) between the members of the couple, and only a few had substantial conflicts (17,1%). Moreover, the motivation to become parents seems to be stronger for the mother who carried the child (57, 1%)than for the social mother. The majority of the lesbian mothers reported no medical homophobia (64,3%) Regarding the caregiving tasks, they seem to be equally shared between social and biological mothers. In regards to the child, almost 70% are aware of their parents’ sexual orientation (as only 5.7% are not fully aware). Finally, no changes in the quality of relationship with the family of origin have been found after the birth of the baby. Clinical implications of these results will be discussed. [less ▲]

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See detailWho are the winners in the race against desiccation – phenotypic plasticity in a fossorial toad
Székely, Diana ULg; Székely, Paul; Denoël, Mathieu ULg et al

Conference (2016, September 29)

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See detailProphéties, lyrisme et chevalerie. Portrait de Jacques Le Gros, bourgeois de Paris († 1551)
Lambert, Adélaïde ULg

Conference (2016, September 29)

Notre communication consistait à analyser les documents qui encadrent la fresque épique Gerard du Frattre dans le manuscrit unique Paris, BnF, fr. 12791, copié intégralement de la main de Jacques Le Gros ... [more ▼]

Notre communication consistait à analyser les documents qui encadrent la fresque épique Gerard du Frattre dans le manuscrit unique Paris, BnF, fr. 12791, copié intégralement de la main de Jacques Le Gros, un marchand de soie parisien. Outre la table des matières de Gerard du Frattre, ce corpus est notamment composé d’un inventaire de la bibliothèque de Jacques Le Gros, de prophéties portant sur des événements politiques contemporains (entre autres, sur les guerres opposant François Ier à Charles Quint), de pièces de vers amoureuses, satiriques ou pieuses, d’un placard affiché sur les portes de Notre-Dame, etc. Copiés entre 1525 et 1545 puis rassemblés dans un même codex, ces documents constituent un témoignage exceptionnel sur les intérêts d’un bourgeois de Paris et, plus largement, sur ceux du public des réécritures médiévales, durant la première moitié du XVIe siècle. En guise de prolongement, les résultats de notre enquête pourront alimenter la question de l’influence qu’a pu exercer le contexte politique et social du début du siècle sur la refonte des légendes médiévales : les pièces qui accompagnent Gerard du Frattre peuvent-elles être considérées comme des éléments paratextuels susceptibles d’orienter l’interprétation de la fiction placée au centre du manuscrit ? [less ▲]

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See detailUsing a dynamic vegetation model for future projections of crop yields: simulations from the plot scale to the Belgian and European scales
Jacquemin, Ingrid ULg; Dury, Marie ULg; Henrot, Alexandra-Jane ULg et al

Conference (2016, September 29)

Dynamic vegetation models (DVM), such as CARAIB (“CARbon Assimilation In the Biosphere”) were initially designed to describe the dynamics of natural ecosystems as a function of climate and soil with the ... [more ▼]

Dynamic vegetation models (DVM), such as CARAIB (“CARbon Assimilation In the Biosphere”) were initially designed to describe the dynamics of natural ecosystems as a function of climate and soil with the aim of studying the role of vegetation in the carbon cycle. But their characteristics allow numerous other applications and improvements, such as the development of a crop module. This module can be validated at the plot scale, with the use of eddy-covariance data from agricultural sites in the FLUXNET network. The carbon fluxes (e.g., net ecosystem exchange (NEE), gross primary productivity (GPP)) and the evapotranspiration (ET) simulated with the CARAIB model are compared with the fluxes measured at several sites, in order to cover a maximum number of crop types (winter wheat/barley, sugar beets, potatoes, rapeseed,…) and to evaluate the model for different European regions (Belgium, France, Germany,…). The aim of this validation is to assess the model ability to reproduce the seasonal and inter-annual variability of carbon fluxes. In order to assess the spatial variability of the model, CARAIB will be applied over Belgium and forced with the outputs the regional climate model ALARO (4 km resolution), for the recent past and the decennial projections. To reach the larger scale, we also aim to assess crops yields over Europe and to quantify the uncertainties in the climatic projections. CARAIB will be driven with the outputs of different regional climatic models (RCMs), nested in CMIP5 GCM projections for the EURO-CORDEX project: ALADIN53 (Météo-France/CNRM), RACMO22E (KNMI), RCA4 (SMHI) and REMO2009 (MPI-CSC) RCMs. These climatic projections are at a high spatial resolution (0.11-degree, ≈12 km). The model will be set up for the most common crops in Europe and for simulations tests with marginal and/or new crops. Finally, this simulation ensemble will be used to highlight potential changes in the most productive areas of Europe. [less ▲]

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See detailINNOVATIVE INJECTABLE LIPOSOME AND DRUG-IN-CYCLODEXTRIN-IN LIPOSOME SYSTEMS ENCAPSULATING ESTETROL FOR THE TREATMENT OF ISCHEMIA DISEASES IN PREMATURE BABIES
Palazzo, Claudio ULg; Laloy, Julie; Delvigne, Anne-Sophie et al

Conference (2016, September 28)

Purpose: In 2010, almost 15 million of babies in the world are prematurely borned, 11.1 % of the total amount of alive children. Despite the better neonatology techniques, the number of preterm babies ... [more ▼]

Purpose: In 2010, almost 15 million of babies in the world are prematurely borned, 11.1 % of the total amount of alive children. Despite the better neonatology techniques, the number of preterm babies with motor, vision, hearing or mental deficiencies is still constant along the last twenty years. Moreover, no efficacy treatment is available to the present day. The estetrol (E4) has an important role in the brain development and protection. The aim of this study is to develop new injectable liposome and drug-in-cyclodextrin-in-liposome (DCL) formulations, encapsulating E4 in order to enhance its crossing through the blood-brain barrier (BBB). Methods: Hydroxypropyl-β-cyclodextrins (degrees of substitution 0.87 and 0.63) (HPβCD 0.87 and HPβCD 0.63) were used to increase E4 aqueous solubility. Liposome and DCL (E4-HPβCD 0.63 complex) formulations were prepared by thin-film hydration technique. The formulations were physicochemical characterized and stability in foetal bovine serum (FBS) was evaluated. LDH and MTS tests on endothelial, neuronal and BBB model cells were performed in vitro on the liposome formulation. Hemocompatibility of the formulations was evaluated on red blood cells, platelet aggregation and coagulation. BBB passage tests were performed using human BBB cell line (hCMEC/D3). Results: E4-HPβCD complexes proportionally increased the solubility of the hormone. Due to the lower solubility obtained with HPβCD ds 0.87, only HPβCD ds 0.63 was retained for future tests. Liposomes and DCL encapsulating E4 were prepared. All the formulations had average particle size below 150 nm, polydispersity index below 0.10 and ζ potential around + 30 mV. The encapsulation efficacy for liposomes was between 3% and 10% while those of DCL are between 15% and 35%. Moreover, the formulations are capable to release 80 % (liposome) and 90 % (DCL) of encapsulated E4 after 3 h at 37°C. The formulations, incubated in FBS at 37°C under gentle stirring, keep the same size and do not form protein corona up to 6 h. The effect of liposome and DCL formulations on cell viability and integrity was evaluated. The results showed no toxic effects on all the tested cell lines. Hemocompatibility tests showed no hemolysis, platelet aggregation or effects on coagulation, confirming the possibility of the formulations to be intravenously administrated. Preliminary BBB passage tests highlighted the capability of the formulations to pass the BBB and reach the brain. Conclusions: New non-toxic, hemocompatible liposome and DCL formulations encapsulating E4 were prepared. The formulations are promising drug delivery system to target estrogens to the brain, due to their physiochemical characteristics. Aknowledgment : The authors thank Estetra SPRL for providing Estetrol. [less ▲]

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See detailMathematical modelling of ectopic bone formation in bone morphogenetic (BMP) carrier device
Manhas, Varun ULg; Carlier, Aurelie; Geris, Liesbet ULg

Conference (2016, September 28)

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See detailEvolution récente des extrêmes pluviométriques au Niger (1950-2014)
Ozer, Pierre ULg; Laminou, Manzo Ousmane; Tidjani, Adamou Didier et al

Conference (2016, September 28)

Detailed reference viewed: 34 (1 ULg)