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See detailThe effect of cement and aggregate type and w/c ratio on the bound water content and neutron shielding efficiency of concretes
Prochon, Piotr ULiege; Piotrowski, Tomasz

in Construction and Building Materials (2020), 264(120210),

Modeling studies of the effect of cement type, aggregate type and w/c ratio on the bound water amount and shielding properties against neutron ionising radiation of concretes are presented. The change of ... [more ▼]

Modeling studies of the effect of cement type, aggregate type and w/c ratio on the bound water amount and shielding properties against neutron ionising radiation of concretes are presented. The change of cement or aggregate type had an significant influence on the bound water amount and neutron linear attenuation coefficient (NLAC) calculated in Monte Carlo N-Particle Transport Code. The multiple regression analysis for the dependent variable NLAC suggested no correlation between w/c ratio and examined parameter.. Data gained in ionic chamber implies an influence of cement type on the concrete shielding properties. [less ▲]

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See detailRéfugiés kurdes de Turquie dans l'Ouest de la France et en Belgique de 1977 à nos jours
Rondeau, Coline ULiege

Doctoral thesis (2020)

Les "carrières migratoires" des Kurdes dans l'Ouest de la France et en Belgique - et plus particulièrement des demandeurs d'asile kurdes - constituent le point de départ de cette étude. Entrés dans le ... [more ▼]

Les "carrières migratoires" des Kurdes dans l'Ouest de la France et en Belgique - et plus particulièrement des demandeurs d'asile kurdes - constituent le point de départ de cette étude. Entrés dans le cadre de l'asile, les Kurdes se sont présentés et se sont racontés. Leurs récits de vie sont le fruit d'une construction sociale opposant le "qui suis-je ?" au "que suis-je ?" voire même "que dois-je être ?". Parallèlement, les décisions de rejet formulées par les institutions de l'asile ont - à la fois - dissocié et associé les Kurdes à des groupes d'appartenance. Face à l'intensité progressive du doute, les Kurdes ont utilisé de nombreuses stratégies de visibilisation et/ou d'invisibilisation lors de procédures diverses. Dans une approche croisée, les conditions de vie et les circulations des Kurdes en Turquie puis vers l'Europe apportent des éléments de réponse sur les routes migratoires empruntées, les transports utilisés. Les Kurdes se sont installés dans de nouveaux espaces nécessitant des réseaux pluriels et des solidarités multiples. Les recompositions territoriales entre les différentes générations de Kurdes se conjuguent à la création d'associations déplaçant le conflit turco-kurde en raison d'appartenances politiques plurielles et montrant la nécessité de transmettre une voire des mémoires. [less ▲]

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See detailLa prière de l'initié : du papyrus Mimaut à l'Asclépius
Rochette, Bruno ULiege

Conference (2020, December 17)

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See detailFactor XII/XIIa inhibitors: Their discovery, development, and potential indications
Davoine, Clara ULiege; Bouckaert, Charlotte; Fillet, Marianne ULiege et al

in European Journal of Medicinal Chemistry (2020), 208

Coagulation factor XII (FXII), a S1A serine protease, was discovered more than fifty years ago. However, its in vivo functions and its three-dimensional structure started to be disclosed in the last ... [more ▼]

Coagulation factor XII (FXII), a S1A serine protease, was discovered more than fifty years ago. However, its in vivo functions and its three-dimensional structure started to be disclosed in the last decade. FXII was found at the crosstalk of several physiological pathways including the intrinsic coagulation pathway, the kallikrein-kinin system, and the immune response. The FXII inhibition emerges as a therapeutic strategy for the safe prevention of artificial surface-induced thrombosis and in patients suffering from hereditary angioedema. The anti-FXII antibody garadacimab discovered by phage-display library technology is actually under phase II clinical evaluation for the prophylactic treatment of hereditary angioedema. The implication of FXII in neuro-inflammatory and neurodegenerative disorders is also an emerging research field. The FXII or FXIIa inhibitors currently under development include peptides, proteins, antibodies, RNA-based technologies, and, to a lesser extent, small-molecular weight inhibitors. Most of them are proteins, mainly isolated from hematophagous arthropods and plants. The discovery and development of these FXII inhibitors and their potential indications are discussed in the review. [less ▲]

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See detailReduced-order modelling of active distribution networks for large-disturbance simulations
Chaspierre, Gilles ULiege

Doctoral thesis (2020)

Distribution systems are getting more and more complex owing to the increasing number of Inverter-Based Generators (IBGs) connected at Medium-Voltage (MV) level. This makes distribution networks more and ... [more ▼]

Distribution systems are getting more and more complex owing to the increasing number of Inverter-Based Generators (IBGs) connected at Medium-Voltage (MV) level. This makes distribution networks more and more responsive and their influence on the whole power system dynamics increases. Therefore, it becomes important for Transmission System Operators (TSOs) to model those Active Distribution Networks (ADNs) in their dynamic studies. First, this thesis deals with the derivation of reduced-order, “grey-box” models of ADNs, intended for dynamic simulations of the transmission system. The ADNs are assumed to host IBGs as well as static and motor loads, whose dynamic parameters are affected by uncertainty. This latter issue is addressed using Monte-Carlo simulations. The parameters of the equivalents are adjusted to match as closely as possible the average of the randomized responses, while their dispersion is accounted for through the weights of the weighted least-square minimization. A procedure is used to remove from the identification the parameters with negligible impact. To avoid over-fitting, the equivalents are tuned for multiple large-disturbance simulations. A recursive procedure is used to select the smallest possible subset of disturbances involved in the least-square minimization. Next, the methodology is extended to account for changing operating conditions. This consists of testing the accuracy of a set of previously derived equivalents, and updating the best of them if its accuracy is not satisfactory. In order to update the equivalent with minimal effort, an approach minimizes the number of parameters to update. In most cases, the results coincide with expectations coming from “engineering judgment”, involving the adjustment of a (very) small subset of parameters. Finally, a new application for a Battery Energy Storage System (BESS), connected at distribution level, is proposed. Its active and reactive powers are controlled such that the net power entering the distribution network matches the response of the available equivalent to large disturbances in the transmission system. The response of the equivalent is simulated in real time. This would allow using with a higher guarantee of accuracy the equivalent model in dynamic simulations of the transmission system. The BESS is supposed to be connected at the main substation of the distribution grid and its control does not use any model of that grid. All simulations reported in the thesis have been carried out on three ADN test systems with different characteristics, one of them being derived from an existing distribution grid. The tests involve large disturbance scenarios that trigger nonlinear, discontinuous responses of IBGs and loads. [less ▲]

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See detailIntegrated model of insect, fish and vegetable production
Hoc, Bertrand ULiege; Tomson, Thomas ULiege; Caparros Megido, Rudy ULiege et al

Poster (2020, December 12)

Global demand for food grow while resources including feed, water and spaces are limited To supply this demand in a context of sustainable development, new production models must be developed Integrated ... [more ▼]

Global demand for food grow while resources including feed, water and spaces are limited To supply this demand in a context of sustainable development, new production models must be developed Integrated productions of insects, fishes and vegetables maximize the use of resources and limit waste production The developed model allows local production of fishes and vegetables by insect bioconversion of many organic vegetable materials with small or no value [less ▲]

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See detailNew ways of working, new ways of living...What housing and planning implications? Ontologies and governance of live-work mix. A comparison of Amsterdam, Brussels and Stockholm
Uyttebrouck, Constance ULiege

Doctoral thesis (2020)

The ‘flexibilisation’ of labour markets has led to the blurring of the work and home spheres, which has had implications on housing and planning. This thesis addresses the ‘live-work mix’, that is, the ... [more ▼]

The ‘flexibilisation’ of labour markets has led to the blurring of the work and home spheres, which has had implications on housing and planning. This thesis addresses the ‘live-work mix’, that is, the renewed intertwining of living and working activities in new housing production and urban development. This phenomenon is related to the focus on new target groups, the restructuring of housing provision and changes in urban agendas. Three research questions are addressed in this research: (i) what are the different ontologies of live-work mix in contrasting institutional frameworks, (ii) what kind of governance arrangements are used to implement live-work mix and (iii) how do institutional frameworks influence the nature and governance of live-work mix. An embedded, comparative case-study analysis was conducted to tackle these questions, with three cities as main cases (Amsterdam, Brussels and Stockholm) and a typology of live-work mix as embedded cases. The analytical framework draws on path dependency and an institutionalist approach to collaborative governance. The first part of the thesis compares the housing and planning regimes as well as live-work mix strategies of the case-study cities. The analysis confirms the impact of early planning directions and shows how factors such as historically dominant actors impact local ontologies of live-work mix. Nevertheless, current issues conditioning live-work mix, such as the flexibilisation of tenure, apply across contexts. The governance of live-work mix is explored in the second part. The results indicate that local governments’ intervention is essential in live-work development, whereas market parties remain focused on residential development. Live-work mix also requires new instruments and strategic uses of existing tools. Although the actors share interests to enhance the attractiveness of a specific location for target demographics, their collaboration can be affected by divergent views, for instance, about the nature of live-work mix. As a result, the projects delivered are likely to favour housing, and affordability and accessibility issues can arise. A comprehensive discussion reconnects the empirical findings to the conceptual framework. It confirms that live-work mix is purposed for specific groups and draws on the emergence of new (commodified) housing forms in locations prioritised in urban agendas. Although institutional frameworks affect several variables of live-work mix, the implementation of live-work goals is not always more effective in more regulated frameworks. The discussion closes with suggestions for the regulation and governance of live-work mix that will inform planners and decision-makers on a phenomenon that is likely to expand in the future. [less ▲]

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See detailGypsum residues in fine recycled aggregates: effects on mechanical and microstructural properties of cementitious composites
Colman, Charlotte ULiege

Doctoral thesis (2020)

Fine recycled aggregates are an important waste stream coming from the demolition of old concrete structures. They are up to now not valorized because of an increased water absorption, lower density and ... [more ▼]

Fine recycled aggregates are an important waste stream coming from the demolition of old concrete structures. They are up to now not valorized because of an increased water absorption, lower density and higher fines content compared to natural aggregates. Moreover, they often have a high sulfate concentration. These sulfates could have originated from plaster in a demolished building, or from the residual cement that is commonly present in these materials. The sulfate level of recycled aggregates is recommended to stay under 0.2 mass% by standard EN206, to limit the risk on sulfate attack: the reaction between cement components, water and sulfates results in the formation of expansive minerals such as ettringite. This expansion can eventually lead to cracking of the material and a general loss in mechanical performances. Fine recycled aggregates from recycling plants did contain 0.15 to 0.80 % of sulfates which is more than allowed, but these amounts did not cause any swelling or degradation when the aggregates were incorporated into mortars. A very elevated sulfate content of 3 % was needed to observe significant expansion, and even this level of contamination could be mitigated by increasing the alkalinity of a mix. Concretes made with varying sulfate levels either expanded or they didn’t: the absolute swelling amount was not proportional to its sulfate content. The actual threshold concentration that started the swelling reaction was dependant on the type of coarse aggregate. The results of this study provide recommendations for the use of fine recycled aggregates contaminated with gypsum residues: a sulfate content of at least 0.3 % could be possible, and even more if certain parameters and mix compositions can be adjusted accordingly. The current limit of 0.2 % seems too strict and hinders the valorization of fine recycled aggregates in high quality construction applications. [less ▲]

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See detailHamlet ou la modernité
Englebert, Jérôme ULiege

Conference given outside the academic context (2020)

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See detailAutofabuladores fabulosos. Estudios sobre las autoficciones no miméticas de Mario Bellatin, Alan Pauls, Valeria Luiselli y César Aira
Licata, Nicolas ULiege

Doctoral thesis (2020)

The title of this dissertation, which holds a descriptive value of its content, is a good starting point for its summary. The word “autofabulator” refers to the author of an “autofabulation”, a technical ... [more ▼]

The title of this dissertation, which holds a descriptive value of its content, is a good starting point for its summary. The word “autofabulator” refers to the author of an “autofabulation”, a technical term that in turn refers to an obviously imaginary type of narrative that a writer builds around his or her own person, playing in it a more or less leading role. “Autofabulators” is reinforced by the adjective “fabulous”, which should be understood in the sense of “unreal”, “extraordinary”, “implausible”, because the authors considered here are not moderate fabulators. On the contrary, the plots they imagine are resolutely fictitious, and their narratives bring out this fictitious nature in many ways. In the subtitle, the expression “non-mimetic autofictions” is used as a synonym for the word “autofabulation”, and I speak of “studies” in the plural (and not of “a study” in the singular) because each chapter focuses on only one of the four authors cited, giving the priority to the unicity of his or her work. That being said, the fact that each chapter offers a reading of an individual work does not preclude that it also builds bridges with the three other authors’ work, in order to elucidate one or various important aspects of autofabulation and/or autofiction in general. It is therefore recommended to read these chapters conjointly. From the subtitle, it can be deduced that this doctoral thesis does not aim at providing a panoramic study of autofabulation, one that would be based on a large number of its cultivators. This does not however mean that I have completely lost sight in my methodology of the variety that characterises the panorama. Instead of opting for a panoramic thesis, that would encompass a wide range of authors, I opted for integrating the panorama in my approach to the narratives: not a panoramic point of view, but a panorama of analytical points of view. Indeed, remaining always primarily literary, my approach to Mario Bellatin’s (Mexico City 1960), Alan Pauls’ (Buenos Aires 1959), Valeria Luiselli’s (Mexico City 1983) and César Aira’s (Coronel Pringles, province of Buenos Aires 1949) autofabulations renews itself from chapter to chapter, and often even from subchapter to subchapter. In the pages of this thesis, the following issues among others are dealt with: the critical relationship of autofiction with medicine and more globally with sciences, feminine autofiction, the similitudes between contemporary Hispano-American autofabulation and the French nouvelle autobiographie, the rhizomatic conception of identity developed in autofabulation, the social image that autofabulators create of themselves, the ludic reading pact they propose to their readers, as well as the openness of their narratives as defined by Umberto Eco. [less ▲]

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See detailSol-gel Ni-based/γ-Al2O3 as efficient catalysts for toluene reforming: Catalytic activity during long-term experiments and in presence of H2S
Claude, Vincent ULiege; Mahy, Julien ULiege; Douven, Sigrid ULiege et al

in Journal of Environmental Chemical Engineering (2020), 8

Last decades, the valorization of biomass became a topic of interest, and especially the production of syngas by the catalytic reforming of biomass. But one drawback for a large-scale development is the ... [more ▼]

Last decades, the valorization of biomass became a topic of interest, and especially the production of syngas by the catalytic reforming of biomass. But one drawback for a large-scale development is the associated production of tars. This work focuses on the catalytic reforming of tars present in bio-syngas reactors. Efficient Ni-based/γ-Al2O3 catalysts were developed in previous studies by an aqueous sol-gel process. Here, four of those catalysts, exhibiting promising catalytic properties for toluene reforming (used as tar model molecule), were further evaluated on long-term experiments and under H2S. Indeed, long-term performance and resistance to poisoning are two key properties of catalysts for industrial applications. One commercial catalyst, HifuelTM, was also evaluated for comparison. The results showed that the pure Ni/γ-Al2O3 catalyst presented a low deactivation throughout 30 h of experiment with neither Ni particle size nor support crystallinity alteration. All co-doped Ni/γ-Al2O3 catalysts were more resistant against deactivation than the pure Ni/γ-Al2O3 catalyst. As only amorphous carbon was deposited, an easy regeneration was performed by heating the catalysts 2 h at 650 °C under air. The catalytic activity remained unchanged in similar 30 h-experiment. Contrarily, the commercial HifuelTM catalyst underwent a strong and quick deactivation by the formation of filamentous carbon. The regeneration under air was not sufficient to regenerate the catalyst. The Ni/γ-Al2O3 catalyst activity was assessed in the presence of H2S. The results showed that the toluene conversion was only slightly affected by the presence of H2S in the syngas mixture, highlighting its very good resistance to poisoning. [less ▲]

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See detailDiplomatie sur le terrain: la première mission diplomatique florentine en territoire mamelouk
Rizzo, Alessandro ULiege

in Bauden, Frédéric (Ed.) Culture matérielle et contacts diplomatiques entre l’Occident latin, Byzance et l’Orient islamique (XIe-XVIe siècle). (2020, December)

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See detail50 ans de fédéralisation de l'Etat belge
Xhardez, Catherine; Counet, Maxime ULiege; Randour, François et al

Book published by Academia/L'Harmattan (2020)

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See detailThe Relationship between the Syrian War and the Appearance of the Promised Mahdi
Kassab, Madeleine ULiege

in Tikrit Journal for Political Science (2020)

This study is about promoting the idea of linking the appearance of Mahdi to the events and changes that have been taking place in the Arab world since 2010. Mixing politics with religion, militarizing ... [more ▼]

This study is about promoting the idea of linking the appearance of Mahdi to the events and changes that have been taking place in the Arab world since 2010. Mixing politics with religion, militarizing the events on a religious basis, religionizing the military events, and justifying the continuation of corruption, devastation and blood shedding on a fideistic basis are done with the help of communication media. The opinion leaders and the simple person share the process of the intellectual and fideistic cultivation. [less ▲]

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See detailPara uma semiótica da fotografia
Dondero, Maria Giulia ULiege; Bracchi, Daniela

Book published by Presses de l'université fédérale de Pernambouc (2020)

Este trabalho tem por objetivo elaborar o estado da arte sobre a questão da fotografia, relacionando a teoria semiótica atual com o campo muito vasto e diversificado dessa mídia, estudada por várias ... [more ▼]

Este trabalho tem por objetivo elaborar o estado da arte sobre a questão da fotografia, relacionando a teoria semiótica atual com o campo muito vasto e diversificado dessa mídia, estudada por várias disciplinas, tais como a sociologia das mídias, a filosofia da imagem, as ciências da informação e da comunicação. A obra se consagra a uma exploração semiótica das teorias da fotografia até aqui elaboradas por meio de outros paradigmas disciplinares, submetendo à revisão os trabalhos de Roland Barthes, Walter Benjamin, Philippe Dubois, Jean-Marie Floch, JacquesFontanille, Nelson Goodman, Algirdas Julien Greimas, Rosalind Krauss e Jean-Marie Schaeffer. Este estudo crítico e comparativo forma um terreno propício para uma reflexão renovada sobre questões fundamentais, tais como a indicialidade, a transparência/opacidade das imagens fotográficas e seus estatutos sociais. O campo da fotografia será explorado especialmente segundo três níveis de pertinência semiótica: textualidade, medialidade e objeto material. É possível assim abordar problemas cruciais da significação: a definição do objeto de estudo, as estratégias de análise, as práticas e os gêneros implicados por essa mídia que atravessa domínios tão diversos quanto a arte, a ciência e a documentação histórica. Desse modo, nos concentraremos em aprofundar certas questões que sempre foram controversas na literatura sobre a fotografia (studium/punctum, aura, etc.) e em levantar certo número de problemas de semiótica contemporânea, tais como a relação entre imagem fotográfica e corporeidade, as práticas de instanciação e de recepção, os gêneros da fotografia, a conservação do patrimônio, a digitalização e as práticas de catalogação museográfica. [less ▲]

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See detailL'aventure cartésienne de la substance. Ego autem substantia dans l'ordre des raisons
Dubouclez, Olivier ULiege

in Revue Internationale de Philosophie (2020, December)

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See detailLe moi et la substance. Lectures de Descartes
Arbib, Dan; Dubouclez, Olivier ULiege; Pelletier, Arnaud

Book published by Société Belge de Philosophie (2020)

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See detailHumpback whales (Megaptera novaeangliae) breeding off Mozambique and Ecuador show geographic variation of persistent organic pollutants and isotopic niches
Remili, Anaïs; Gallego Reyes, Pedro ULiege; Pinzone, Marianna ULiege et al

in Environmental Pollution (2020), 267

Humpback whales (Megaptera novaeangliae) from the Southern Hemisphere carry information on persistent organic pollutants (POPs) from their feeding zones in Antarctica to their breeding grounds, making ... [more ▼]

Humpback whales (Megaptera novaeangliae) from the Southern Hemisphere carry information on persistent organic pollutants (POPs) from their feeding zones in Antarctica to their breeding grounds, making this species a sentinel of contaminants accumulation in the Southern Ocean. This study aimed to evaluate driving factors, namely feeding areas, trophic level, and sex, affecting POP concentrations in the blubber of humpback whales breeding off Mozambique and off Ecuador. Biopsies of free-ranging humpback whales including blubber and skin were collected in 2014 and 2015 from Ecuador (n = 59) and in 2017 from Mozambique (n = 89). In both populations, HCB was the major contaminant followed by DDTs > CHLs > PCBs > HCHs > PBDEs. POP concentrations were significantly higher in males compared to females. HCB, DDTs, HCHs and PBDEs were significantly different between whales from the Mozambique population and the Ecuador population. Sex and feeding habits were important driving factors accounting for POP concentrations in Ecuador whales. The whales from our study had some of the lowest POP concentrations measured for humpback whales in the world. These whales fed predominantly on krill as reflected from the low δ13C and δ15N values measured in the skin. However, the isotopic niches of whales from Mozambique and Ecuador did not overlap indicating that the two populations are feeding in different areas of the Southern Ocean. [less ▲]

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See detailÉtat fédéral et demandes partisanes : Évolution des programmes de partis néerlandophones au sujet de la forme de l’État et de ses compétences (1991-2019)
Counet, Maxime ULiege

in Xhardez, Catherine; Counet, Maxime; Randour, François (Eds.) et al 50 ans de fédéralisation de l'Etat belge (2020)

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