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See detailA mysterious giant ichthyosaur from the lowermost Jurassic of Wales
Martin, Jeremy E; Vincent, Peggy; Suan, Guillaume et al

in Acta Palaeontologica Polonica (in press)

Ichthyosaurs rapidly diversified and colonised a wide range of ecological niches during the Early and Middle Triassic period, but experienced a major decline in diversity near the end of the Triassic ... [more ▼]

Ichthyosaurs rapidly diversified and colonised a wide range of ecological niches during the Early and Middle Triassic period, but experienced a major decline in diversity near the end of the Triassic. Timing and causes of this demise and the subsequent rapid radiation of the diverse, but less disparate, parvipelvian ichthyosaurs are still unknown, notably because of inadequate sampling in strata of latest Triassic age. Here, we describe an exceptionally large radius from Lower Jurassic deposits at Penarth near Cardiff, South Wales (UK) the morphology of which places it within the giant Triassic shastasaurids. A tentative total body size estimate, based on a regression analysis of various complete ichthyosaur skeletons, yields a value of 12-15 m. The specimen is substantially younger than any previously reported last known occurrences of shastasaurids and implies a Lazarus range in the lowermost Jurassic for this ichthyosaur morphotype. [less ▲]

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See detailBayesian versus frequentist methods for estimating disease true prevalence and 4 diagnostic test performance
Sanogo, M; Abatih, E; Saegerman, Claude ULg

in Veterinary Journal (in press)

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See detailUrban governance adaptation in an old industrial city: Liège (Belgium)
Breuer, Christophe ULg; Halleux, Jean-Marie ULg; Teller, Jacques ULg

in Francese, Dora (Ed.) Napoli Citta Metropolitana (in press)

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See detailChemical abundances of fast-rotating OB stars
Cazorla, Constantin ULg; Morel, Thierry ULg; Nazé, Yaël ULg et al

in IAU Symposium (in press)

Fast rotation in massive stars is predicted to induce mixing in their interior, but a population of fast-rotating stars with normal nitrogen abundances at their surface has recently been revealed (Hunter ... [more ▼]

Fast rotation in massive stars is predicted to induce mixing in their interior, but a population of fast-rotating stars with normal nitrogen abundances at their surface has recently been revealed (Hunter et al. 2009; Brott et al. 2011, but see Maeder et al. 2014). However, as the binary fraction of these stars is unknown, no definitive statements about the ability of single-star evolutionary models including rotation to reproduce these observations can be made. Our work combines for the first time a detailed surface abundance analysis with a radial-velocity monitoring for a sample of bright, fast-rotating Galactic OB stars to put strong constraints on stellar evolutionary and interior models. [less ▲]

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See detailLes défis colossaux auxquels la santé publique va devoir faire face !
COUCKE, Philippe ULg

in Onco : Revue Multidisciplinaire d'Oncologie (in press)

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See detailL’acte incendiaire, son sujet et sa signification : propositions à partir du Saint Genet de Jean-Paul Sartre
Englebert, Jérôme ULg

in Annales Médico-Psychologiques (in press)

Objectives In this paper we studied fire setters with the hermeneutics’ method from the philosophy of Jean-Paul Sartre. In the psychobiography of Jean Genet, the philosopher raises issues of the ... [more ▼]

Objectives In this paper we studied fire setters with the hermeneutics’ method from the philosophy of Jean-Paul Sartre. In the psychobiography of Jean Genet, the philosopher raises issues of the infractional acting and its social meaning. Methods After recalling the basic notions of international literature about fire setters (including confusion with pyromania, diagnostic problems proposed by the DSM IV and the concept of "communicative arson"), we propose phenomenological and existential clues to discuss the act and its meaning. It is the unlawful act that is analysed and more specifically the arson. We propose different analysis than the psychic causality which is inspired by psychoanalysis. The criminogenesis gives way to a questioning of identity, about the place of fire in the subject’s history and within its relationships to others. As proposed by Sartre, the paradigm of this research is to consider the meaning "as the return of the future in the present". The second field of this study is an analysis of three clinical cases. These cases are the result of a forensic practice. The method is focused on the analysis of a narrative and autobiographical production. By this way we studied the temporal process of these three arsonists. Results A comparative reading of the psychobiography of Jean Genet written by Sartre and of the situation of arsonists gives accurate information. The "criminogenesis" gives way to a questioning of identity. In this way we discuss the meaning of fire in the subject's history and within its relationship to others. We highlight the inscription of the act in the social and constitutive process of the individual. From the clinical material, the author demonstrates a link between arson and construction of identity. Identity is considered as a dialectic between “ipse” and “idem”, as suggested by Ricœur. We can therefore consider the real sense that the arson has from the perspective of the actor but also from the viewpoint of the society and these conceptions may be similar or different. In clinical practice, we recommend to pay special attention to how the fire is part of the biography of the patient. Conclusions The fascination for fire is a source of meaning which can be radically different depending on whether we consider the external interpreter (the world or the clinician) or the author of the action. The basic principles of hermeneutics, as described by Gadamer and Ricœur, are to demonstrate that the understanding and the interpretation are not only the methods used in the human sciences but are also part of the fundamental processes inherent in human nature. Hermeneutics in general is the opposite of a doctrine of truth. It rather seeks to show arbitrarily how the interpretation and the search for meaning are paradigmatic of the human experience. [less ▲]

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See detailLa manie et la mélancolie comme crises de l’identité narrative et de l’intentionnalité
Englebert, Jérôme ULg; Stanghellini, Giovanni

in Evolution Psychiatrique (in press)

Objectives: Our objective is to achieve a phenomenological cross-study of melancholic and manic crises. To do this, we analyze the relationship between these two psychopathological states by means of the ... [more ▼]

Objectives: Our objective is to achieve a phenomenological cross-study of melancholic and manic crises. To do this, we analyze the relationship between these two psychopathological states by means of the concepts of "narrative identity" and "intentionality". Method: From clinical cases and with reference to various theoretical models derived from phenomenological psychopathology, we discuss similarities and differences between mania and melancholia. Results: Narrative identity is based on a double movement: that of the enunciation of a speech focused on his history and that of an act of creation. From different clinical situations, we find that: (1) the melancholic retains the ability to elaborate a narrative about his history but the creative dimension of this narrative is absent, and (2) conversely, the manic experiences only the creative dimension. Discussion: Intentionality, as the tendency of consciousness to move toward something beyond itself, proves to be the center of the manic existence without being able to set itself within the boundaries of factual constraints. The melancholic, conversely, experiences an existence in which consciousness has lost its capacity to aim beyond itself. Conclusions: Melancholia and mania are quite specific forms of being-in-world with particular identity and temporal experiences. These two states share a fundamental psychopathological feature, that we named here “manque chiasmatique”: they are disorders of the intentional movement that constitutes narrative identity, that is, of the dialectics between the rootedness (“enracinenment”) of self in its past and the possibility of creation of a new identity. [less ▲]

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See detailDominant amphipods of Posidonia oceanica seagrass meadows display considerable trophic diversity
Michel, Loïc ULg; Dauby, Patrick ULg; Gobert, Sylvie ULg et al

in Marine Ecology (in press)

Gut content examination and trophic markers (fatty acids, stables isotopes of C and N) were combined to delineate the diet of the dominant species of amphipods from Mediterranean Posidonia oceanica ... [more ▼]

Gut content examination and trophic markers (fatty acids, stables isotopes of C and N) were combined to delineate the diet of the dominant species of amphipods from Mediterranean Posidonia oceanica seagrass meadows and to highlight trophic diversity among this community. Our results indicate that, although all dominant species heavily relied on macroalgal epiphytes, considerable interspecific dietary differences existed. Carbon stable isotope ratios notably showed that some of the amphipod species favored grazing on epiphytes from leaves or litter fragments (Apherusa chiereghinii, Aora spinicornis, Gammarus aequicauda), while others like Dexamine spiniventris preferred epiphytes from rhizomes. The remaining amphipods (Caprella acanthifera, Ampithoe helleri and Gammarella fucicola) readily consumed both groups. In addition, SIAR modeling suggested that most species had a mixed diet, and relied on several food items. Fatty acid analysis and gut contents revealed that contribution of microepiphytic diatoms and of benthic and suspended particulate organic matter to the diet of amphipods were anecdotal. None of the examined species seemed to graze on their seagrass host (low 18:2(n-6) and 18:3(n-3) fatty acids contents), but G. aequicauda partly relied on seagrass leaf detritus, as demonstrated by the lesser 13C-depletion of their tissues. Overall, our findings suggest that amphipods, because of their importance in transfers of organic matter from primary producers and detritus to higher rank consumers, are key-items in P. oceanica associated food webs. [less ▲]

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See detailL'intentionnalité cognitive et ses modes. Reinach critique de Brentano
Dewalque, Arnaud ULg

in Philosophie (in press)

Dans cet article, je suggère que la théorie reinachienne du jugement peut être vue comme une contribution à une théorie générale de l’intentionnalité cognitive et de ses modes. À cette fin, je focaliserai ... [more ▼]

Dans cet article, je suggère que la théorie reinachienne du jugement peut être vue comme une contribution à une théorie générale de l’intentionnalité cognitive et de ses modes. À cette fin, je focaliserai mon attention sur certaines divergences significatives entre Reinach et Brentano. Après quelques réflexions introductives (§§ 1-2), j’examinerai plus exactement les questions suivantes : quels sont les motifs théoriques qui ont conduit Reinach à s’écarter de la théorie brentanienne du jugement (§§ 3-4) ? Et que retenir de ses analyses aujourd’hui (§§ 5-6) ? [less ▲]

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See detailRugose corals across the Devonian-Carboniferous boundary in NW Turkey
Denayer, Julien ULg

in Acta Palaeontologica Polonica (in press)

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See detailNon-adiabatic study of the Kepler subgiant KIC 6442183
Grosjean, Mathieu ULg; Dupret, Marc-Antoine ULg; Belkacem, Kevin et al

in The Space Photometry Revolution CoRoT Symposium 3, Kepler KASC-7 joint meeting (in press)

Thanks to the precision of Kepler observations, [3] were able to measure the linewidth and amplitude of individual modes (including mixed modes) in several sub- giant power spectra. We perform a forward ... [more ▼]

Thanks to the precision of Kepler observations, [3] were able to measure the linewidth and amplitude of individual modes (including mixed modes) in several sub- giant power spectra. We perform a forward modelling of a Kepler subgiant based on sur- face properties and observed frequencies. Non-adiabatic computations including a time- dependent treatment of convection give the lifetimes of radial and non-radial modes. Next, combining the lifetimes and inertias with a stochastic excitation model gives the ampli- tudes of the modes. We can now directly compare theoretical and observed linewidths and amplitudes of mixed-modes to obtain new constraints on our theoretical models. [less ▲]

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See detailExplorer la banque de graines du sol pour mieux comprendre la dynamique de régénération des forêts tropicales africaines (synthèse bibliographique)
Douh, Chauvelin ULg; Daïnou, Kasso ULg; Loumeto, Jean Joël et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (in press), 18(4),

La banque de graines du sol des forêts denses humides africaines a été très peu étudiée, alors qu’elle pourrait jouer un rôle déterminant dans les cycles sylvigénétiques naturels. Elle pourrait également ... [more ▼]

La banque de graines du sol des forêts denses humides africaines a été très peu étudiée, alors qu’elle pourrait jouer un rôle déterminant dans les cycles sylvigénétiques naturels. Elle pourrait également être avantageusement utilisée dans les programmes de restauration, à l’instar de ce qui se fait sur d’autres continents. La présente synthèse bibliographique fait le point sur les connaissances actuelles relatives à la banque de graines du sol, en mettant l’accent sur le continent africain. Elle montre qu’une meilleure caractérisation de la banque de graines du sol des différentes communautés végétales constituerait une contribution notable pour la gestion durable des forêts tropicales d’Afrique. [less ▲]

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See detailNew data on the recent history of the littoral forests of southern Cameroon: an insight into the role of historical human disturbances on the current forest composition
Biwolé, Achille ULg; Morin-Rivat, Julie ULg; Fayolle, Adeline ULg et al

in Plant Ecology and Evolution (in press)

Background and aims – Prior to European colonisation of Central Africa, human populations were dispersed through the forests, where they practiced slash-and-burn cultivation. From the 19th century they ... [more ▼]

Background and aims – Prior to European colonisation of Central Africa, human populations were dispersed through the forests, where they practiced slash-and-burn cultivation. From the 19th century they were progressively concentrated in villages along roads, leaving large areas of forest derelict. In south-western Cameroon, and elsewhere in Central Africa, forest canopy is dominated by long-lived lightdemanding tree species, suggesting a possible role of human disturbance. The aim of this study was to bring new insights into the possible effect of historical human disturbances in terms of timing and spatial extent on the current forest composition. Location – Wet evergreen littoral forest in south-western Cameroon. Methods and key results – A combined vegetation sampling and archaeobotanical survey were conducted. Potsherds, oil-palm endocarps, and charcoal were found throughout the study area, suggesting generalised human occupation and anthropogenic fire. Human occupancy occurred in two periods: between 2200 and 1500 BP, and, more recently, beginning three centuries ago. High frequency of fire and the presence of Elaeis guineensis both dated recently (between 260 and 145 BP) suggest slash-and-burn shifting cultivation practices. These human-induced disturbances may coincide with the age of the current emergent lightdemanding species, the age of which can be estimated around 200 years, or with the phases of drying climate recorded in the Central African forest in the early 18th century. Conclusions – These results support the idea that historical human disturbances are one of the major factors that shaped the current forest composition in Central Africa. [less ▲]

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See detailCharacterizing the morphology of suburban settlements: a method based on a semi-automatic classification of building clusters
de Smet, Fabian; Teller, Jacques ULg

in Landscape Research (in press)

Urban sprawl is transforming our landscapes and rural areas at a spectacular pace. Measuring the strength of the phenomenon and proposing dynamic ways to delineate suburban areas have been the object of ... [more ▼]

Urban sprawl is transforming our landscapes and rural areas at a spectacular pace. Measuring the strength of the phenomenon and proposing dynamic ways to delineate suburban areas have been the object of much debate amongst scientists. The present article takes the view that, beyond measuring and delineating suburban areas, more efforts should be directed to qualifying the morphology of built settlements within these areas. Therefore it proposes a method based on a semi-automatic classification system of building clusters, designed to describe and interpret the phenomenon from a morphological perspective. This method is based on a combination of field surveys with numerical analyses of digital land cadastre maps. The application of this classification system to the suburban area around Liege reveals that, far from developing in a complete indifference of local conditions, contemporary suburban settlements are influenced by landscape structures inherited from the past. [less ▲]

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See detailB fields in OB stars (BOB): on the detection of weak magnetic fields in the two early B-type stars beta CMa and epsilon CMa
Fossati, L.; Castro, N.; Morel, Thierry ULg et al

in ArXiv e-prints (in press), 1411

Within the context of the "B fields in OB stars (BOB)" collaboration, we used the HARPSpol spectropolarimeter to observe the early B-type stars beta CMa (HD44743; B1 II/III) and epsilon CMa (HD52089; B1.5 ... [more ▼]

Within the context of the "B fields in OB stars (BOB)" collaboration, we used the HARPSpol spectropolarimeter to observe the early B-type stars beta CMa (HD44743; B1 II/III) and epsilon CMa (HD52089; B1.5 II). For both stars, we consistently detected the signature of a weak (<30 G in absolute value) longitudinal magnetic field. We determined the physical parameters of both stars and characterise their X-ray spectrum. For beta CMa, our mode identification analysis led to determining a rotation period of 13.6+/-1.2 days and of an inclination angle of the rotation axis of 57.6+/-1.7 degrees, with respect to the line of sight. On the basis of these measurements and assuming a dipolar field geometry, we derived a best fitting obliquity of ~22 degrees and a dipolar magnetic field strength (Bd) of ~100 G (60<Bd<230 G within 1 sigma), below what is typically found for other magnetic massive stars. For epsilon CMa we could only determine a lower limit on the dipolar magnetic field strength of 13 G. For this star, we determine that the rotation period ranges between 1.3 and 24 days. Both stars are expected to have a dynamical magnetosphere. We also conclude that both stars are most likely core hydrogen burning and that they have spent more than 2/3 of their main sequence lifetime. A histogram of the distribution of the dipolar magnetic field strength for the magnetic massive stars known to date does not show the magnetic field "desert" observed instead for intermediate-mass stars. The biases involved in the detection of (weak) magnetic fields in massive stars with the currently available instrumentation and techniques imply that weak fields might be more common than currently observed. Our results show that, if present, even relatively weak magnetic fields are detectable in massive stars and that more observational effort is probably still needed to properly access the magnetic field incidence. [less ▲]

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See detailCombining seismology and spectropolarimetry of hot stars
Neiner, Coralie; Briquet, Maryline ULg; Mathis, Stéphane et al

in IAU Symosium 307 (in press)

Asteroseismology and spectropolarimetry have allowed us to progress significantly in our understanding of the physics of hot stars over the last decade. It is now possible to combine these two techniques ... [more ▼]

Asteroseismology and spectropolarimetry have allowed us to progress significantly in our understanding of the physics of hot stars over the last decade. It is now possible to combine these two techniques to learn even more information about hot stars and constrain their models. While only a few magnetic pulsating hot stars are known as of today and have been studied with both seismology and spectropolarimetry, new opportunities - in particular Kepler2 and BRITE - are emerging and will allow us to rapidly obtain new combined results. [less ▲]

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See detailThe B Fields in OB Stars (BOB) Survey
Morel, Thierry ULg; Castro, N.; Fossati, L. et al

in IAU Symposium (in press)

The B fields in OB stars (BOB) survey is an ESO large programme collecting spectropolarimetric observations for a large number of early-type stars in order to study the occurrence rate, properties, and ... [more ▼]

The B fields in OB stars (BOB) survey is an ESO large programme collecting spectropolarimetric observations for a large number of early-type stars in order to study the occurrence rate, properties, and ultimately the origin of magnetic fields in massive stars. As of July 2014, a total of 98 objects were observed over 20 nights with FORS2 and HARPSpol. Our preliminary results indicate that the fraction of magnetic OB stars with an organised, detectable field is low. This conclusion, now independently reached by two different surveys, has profound implications for any theoretical model attempting to explain the field formation in these objects. We discuss in this contribution some important issues addressed by our observations (e.g., the lower bound of the field strength) and the discovery of some remarkable objects. [less ▲]

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