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See detailInfluence of process operating conditions on solvent thermal and oxidative degradation in post-combustion CO2 capture
Léonard, Grégoire ULg; Crosset, Cyril; Toye, Dominique ULg et al

in Computers & Chemical Engineering (in press)

///Document soumis, la révision doit encore être faite./// The CO2 post-combustion capture with amine solvents is modeled as a complex system interconnecting process energy consumption and solvent ... [more ▼]

///Document soumis, la révision doit encore être faite./// The CO2 post-combustion capture with amine solvents is modeled as a complex system interconnecting process energy consumption and solvent degradation and emission. Based on own experimental data, the kinetics of monoethanolamine degradation is included into a model of the CO2 capture process. The influences of operating conditions and flowsheet improvements on solvent loss and process energy requirement are quantified and validated with pilot plant data. Oxidative degradation in the absorber is identified as the major cause of solvent loss. On the contrary, thermal degradation does not appear as a major concern. Finally, this study leads to a decrease by 10% of the process exergy requirement along with a reduction by 11% of the solvent loss, all that by using a single model. Thus, this model provides a practical tool to minimize both the energy requirement and the solvent degradation by the design of large-scale CO2 capture units. [less ▲]

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See detailRevisiting the origin and diversification of vascular plants through a comprehensive Bayesian analysis of the fossil record
Silvestro, Daniel; Cascales - Miñana, Borja ULg; Bacon, Christine D. et al

in New Phytologist (in press)

Plants have a long evolutionary history, during which mass extinction events dramatically affected Earth’s ecosystems and its biodiversity. The fossil record can shed light on the diversi- fication ... [more ▼]

Plants have a long evolutionary history, during which mass extinction events dramatically affected Earth’s ecosystems and its biodiversity. The fossil record can shed light on the diversi- fication dynamics of plant life and reveal how changes in the origination–extinction balance have contributed to shaping the current flora. We use a novel Bayesian approach to estimate origination and extinction rates in plants throughout their history. We focus on the effect of the ‘Big Five’ mass extinctions and on estimating the timing of origin of vascular plants, seed plants and angiosperms. Our analyses show that plant diversification is characterized by several shifts in origination and extinction rates, often matching the most important geological boundaries. The estimated origin of major plant clades predates the oldest macrofossils when considering the uncertainties associated with the fossil record and the preservation process. Our findings show that the commonly recognized mass extinctions have affected each plant group differently and that phases of high extinction often coincided with major floral turnovers. For instance, after the Cretaceous–Paleogene boundary we infer negligible shifts in diversification of non-flowering seed plants, but find significantly decreased extinction in spore-bearing plants and increased origination rates in angiosperms, contributing to their current ecological and evolutionary dominance. [less ▲]

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See detailPremier Aperçu de la céramique de Bash Tapa
Mas, Juliette ULg

in Marti, L; Nicolle, C (Eds.) Recherches en Haute Mésopotamie 2 (in press)

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See detailLes premiers résultats du Sondage 1
Mas, Juliette ULg; Angevin, Raphaël

in Marti, L; Nicolle, C (Eds.) Recherches en Haute Mésopotamie 2 (in press)

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See detailRelire Durkheim à partir de Zola : Ce que le roman naturaliste fait à la sociologie du suicide de Durkheim
Ledent, David ULg

in Le suicide : question individuelle ou question sociétale ? (in press)

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See detailLe partage du sensible
Havelange, Carl ULg

in Fritz, Jean-Marie; Duhl, Olga (Eds.) Les cinq sens entre Moyen Age et Renaissance (in press)

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See detailLiège de 1914 à 1927 : mort et résurrection d’un bassin industriel
Pirot, Pascal ULg; Peters, Arnaud ULg; Destatte, Julien ULg

in Actes du colloque: Guerres mondiales et bassins industriels en territoire occupé (1900-1950), Maubeuge, 20-21 novembre 2014 (titre provisoire) (in press)

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See detailDiversity patterns of the vascular plant group Zosterophyllopsida in relation to Devonian palaeogeography
Cascales - Miñana, Borja ULg; Meyer-Berthaud, Brigitte

in Palaeogeography, Palaeoclimatology, Palaeoecology (in press)

See detailConclusion. De nouvelles approches pour repenser l’(in)sécurité
Wintgens, Sophie ULg; Grandjean, Geoffrey ULg; Vanhaeren, Stéphanie ULg

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L’insécurité en question. Définition, enjeux et perspectives (in press)

See detailIntroduction. L’(in)sécurité : entre représentations et perceptions des concepts
Grandjean, Geoffrey ULg; Wintgens, Sophie ULg; Vanhaeren, Stéphanie ULg

in Wintgens, Sophie; Grandjean, Geoffrey; Vanhaeren, Stéphanie (Eds.) L’insécurité en question. Définition, enjeux et perspectives (in press)

See detailL'insécurité en question. Définition, enjeux et perspectives
Wintgens, Sophie ULg; Grandjean, Geoffrey ULg; Vanhaeren, Stéphanie ULg

Book published by Presses Universitaires de Liège (in press)

Ces dernières années, l’analyse et les pratiques de la sécurité et de l’insécurité ont fortement évolué sous l’influence de plusieurs facteurs fortement imbriqués, tels que le déclin de la souveraineté ... [more ▼]

Ces dernières années, l’analyse et les pratiques de la sécurité et de l’insécurité ont fortement évolué sous l’influence de plusieurs facteurs fortement imbriqués, tels que le déclin de la souveraineté nationale, l’accroissement de l’intensité des interactions transnationales ou encore l’éclatement conflictuel sous-tendu par des dynamiques identitaires. Ces constats et les représentations qui leur sont associées ont enjoint un réexamen de la manière dont la sécurité et l’insécurité se pensent et se pratiquent. Inscrit au cœur de ce double questionnement contemporain, cet ouvrage met en question la définition et les enjeux liés aux dynamiques actuelles d’(in)sécurité tout en proposant de nouvelles perspectives. Privilégiant les études empiriques et les approches originales en termes de politique interne et/ou externe, il repose sur trois axes de recherche transversaux : la (re)définition des concepts de sécurité et d’insécurité à l’heure de la globalisation ; les enjeux inhérents aux pratiques (in)sécuritaires et aux sentiments d’(in)sécurité qui les fondent ; les réponses à apporter aux questions de sécurité et d’insécurité. Complémentaire aux analyses disciplinaires classiques de ces objets de recherche en Science politique, cet ouvrage livre un regard neuf sur des thématiques plus que jamais d’actualité. [less ▲]

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See detailLe faussaire
Havelange, Carl ULg

in Durante, Erica (Ed.) De l'humain au post-humain: le double et ses récits (in press)

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See detailCahiers d'Etudes Germaniques : Lecteurs/spectateurs d'Alexander Kluge
Cormann, Grégory ULg; Hamers, Jérémy ULg; Letawe, Céline ULg

Book published by Université de Provence (2015)

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See detailFlexible multibody system modelling: A geometric local frame approach on SE(3)
Sonneville, Valentin ULg

Scientific conference (2015, October 30)

In order to improve computational costs in the frame of flexible multibody system modelling, we propose a geometrically exact framework relying on a local frame description. Thanks to this framework ... [more ▼]

In order to improve computational costs in the frame of flexible multibody system modelling, we propose a geometrically exact framework relying on a local frame description. Thanks to this framework, geometric non-linearities are strongly reduced for two reasons. Firstly, the equations of motion can be solved without introducing a global parametrization of the motion, which also leads to a naturally singularity-free description of large rotations. Secondly, the equations of motion are expressed in a local frame, both at position and rotation level, leading to intrinsic equations. Accordingly, these equations are insensitive to large amplitude motions, such that the geometric non-linearities are naturally filtered. The mathematical developments are carried out in a Lie group setting which, albeit more abstract than classical treatments, provides generic and powerful well established tools. So far, several elements have been formulated in this framework: rigid body, kinematic joints and a flexible beam finite element. A shell finite element and a super-element are also under development. Some interesting numerical advantages are observed following the reduction of geometric non-linearities, e.g., the iteration matrix depends on relative motion within the elements only and is thus invariant under rigid body motions. [less ▲]

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See detailBenedetto Varchi, gli artisti e l'accademia a Firenze
Geremicca, Antonio ULg

Scientific conference (2015, October 29)

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See detailLes visages d'Alain Baczynsky
Englebert, Jérôme ULg; Séguin, Marion

Scientific conference (2015, October 10)

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See detailEspace, temps et angoisse psychotique : à propos d'un cas magistral
Englebert, Jérôme ULg

Scientific conference (2015, October 10)

Detailed reference viewed: 21 (1 ULg)
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See detailOuverture des travaux
Valenti, Gianluca ULg; Miesse, Hélène ULg

Conference (2015, October 01)

Detailed reference viewed: 6 (0 ULg)