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See detailL'interscripteur et le rhapsode
Servais, Christine ULiege

in Parouty-David, Françoise; Zilberberg, Claude (Eds.) Sémiotique et esthétique (2003)

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See detailIntersections on the "Map of Art": Metaphor in Ben Okri's Dangerous Love and Wilson Harris's The Mask of the Beggar
Tunca, Daria ULiege

in Collier, Gordon; Davis, Geoffrey V.; Delrez, Marc (Eds.) et al The Cross-Cultural Legacy: Critical and Creative Writings in Memory of Hena Maes-Jelinek (2017)

Inspired by the work and legacy of Hena Maes-Jelinek, this essay proposes a parallel reading of Ben Okri’s Dangerous Love (1996) and Wilson Harris’s The Mask of the Beggar (2003), focusing on the novels’ ... [more ▼]

Inspired by the work and legacy of Hena Maes-Jelinek, this essay proposes a parallel reading of Ben Okri’s Dangerous Love (1996) and Wilson Harris’s The Mask of the Beggar (2003), focusing on the novels’ use of metaphor. More precisely, the article relies on conceptual metaphor theory to explore how these two Künstlerromane conceptualize the artistic development of their respective protagonists. It is argued that, while both novels use spatial metaphors to present art as a journey undertaken by their artist-hero, Okri privileges forward motion on the creative path, whereas Harris additionally foregrounds movement towards the travelling artist. In doing so, the Guyanese writer defeats readers’ instinctive search for a sense of direction on the “map of art,” a move that is emblematic of the elusive dialectic at the heart of his work. [less ▲]

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See detailLes intersémiotiques
Badir, Sémir ULiege

in Estudos Semióticos (2013), 9(1), 1-12

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See detailInterspecific competition between three congeneric species of Carabid beetles in sympatry: a morphometric approach
Baguette, Michel; Castin, Yves; Dufrêne, Marc ULiege

in Stork, Nigel (Ed.) The Role of Ground Beetles in Ecological and Environmental Studies (1990)

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See detailInterspecific hybridization for cotton improvement
Mergeai, Guy ULiege

in Cotton biotechnology (1993)

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See detailInterspecific hybridization with Phaseolus vulgaris L.: embryo development and its genetics.
Baudoin, Jean-Pierre ULiege; Silue, S.; Geerts, P. et al

in Recent Research Developments in Genetics & Breeding. Vol. 1, Part II (2004)

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See detailInterspecific recombination between two ruminant alphaherpesviruses, bovine herpesviruses 1 and 5
Meurens, F.; Keil, G. M.; Muylkens, Benoît ULiege et al

in Journal of Virology (2004), 78(18), 9828-9836

Homologous recombination between different species of alphaherpesviruses has been described between herpes simplex viruses 1 and 2 but has not yet been observed between other alphaherpesviruses. In the ... [more ▼]

Homologous recombination between different species of alphaherpesviruses has been described between herpes simplex viruses 1 and 2 but has not yet been observed between other alphaherpesviruses. In the present study we chose to assess to what extent in vitro recombination can occur between members of a well-defined group of closely related viruses such as ruminant alphaherpesviruses. At 24 h after infection of epithelial bovine kidney cells with a double-deleted mutant of bovine herpesvirus 1 (BoHV-1) (containing green fluorescent protein and red fluorescent protein genes) and different ruminant alphaherpesviruses, four types of progeny viruses were detected and distinguished according to their phenotype. Frequent recombination events between identical or different strains of BoHV-1 were observed (up to 30%), whereas only two BoHV-1/BoHV-5 recombinants were identified, and no recombinants between BoHV-1 and less closely related caprine and cervine herpesviruses were detected. Restriction analysis of the genomes of the two BoHV-1/BoHV-5 recombinants showed different genetic backgrounds. One possessed a restriction pattern close to BoHV-1, whereas the other one was close to BoHV-5. This exhaustive analysis of each combination of coinfection in a unique situation of five closely related alphaherpesviruses revealed the importance of a high degree of genetic relatedness and similar parental virus growth kinetics for successful interspecific recombination. [less ▲]

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See detailInterspecific variation in bumblebee performance on pollen diet: New insights for mitigation strategies
Moerman, R.; Roger, N.; De Jonghe, R. et al

in PLoS ONE (2016), 11(12),

Bumblebees (i.e. Bombus genus) are major pollinators of flowering wild plants and crops. Although many species are currently in decline, a number of them remain stable or are even expanding. One factor ... [more ▼]

Bumblebees (i.e. Bombus genus) are major pollinators of flowering wild plants and crops. Although many species are currently in decline, a number of them remain stable or are even expanding. One factor potentially driving changes in bumblebee distribution is the suitability of plant communities. Actually, bees probably have specific nutritional requirements that could shape their floral choices and constraint them in the current context of global change. However, most studies primarily focus on one bumblebee species at a time, making comparative studies scarce. Herein we performed comparative bioassays on three bumblebee species (i.e. Bombus hypnorum, B. pratorum and B. terrestris) fed on three different pollen diets with distinct nutritive content (Cistus, Erica and Salix pollen diets). Micro-colony performance was compared through different developmental and resource collection parameters for understanding the impact of change in pollen diet on different bumblebee species. The evidence suggests that B. terrestris is by far the most competitive species because of its performance compared to the other species, regardless of pollen diet. Our results also highlight a Bombus species effect as pollen diet impacts the micro-colonies in different ways according to the actual bumblebee species. Such interspecific variation in Bombus performance in response to a dietetic change underlines the importance of considering different bumblebee species in mitigation strategies. Such comparative studies are good advice for developing appropriate suites of plant species that can benefit threatened species while supporting stable or expanding ones. Copyright © 2016 Moerman et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. [less ▲]

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See detailInterspecific variation of calls in clownfishes: degree of similarity in closely related species
Colleye, Orphal ULiege; Vandewalle, Pierre ULiege; Lanterbecq, Déborah et al

in BMC Evolutionary Biology (2011), 11

Clownfishes are colorful coral reef fishes living in groups in association with sea anemones throughout the Indo-Pacific Ocean. Within their small societies, size hierarchy determines which fish have ... [more ▼]

Clownfishes are colorful coral reef fishes living in groups in association with sea anemones throughout the Indo-Pacific Ocean. Within their small societies, size hierarchy determines which fish have access to reproduction. These fishes are also prolific callers whose aggressive sounds seem to play an important role in the social hierarchy. Agonistic interactions being involved in daily behaviour suggest how acoustic communication might play an important role in clownfish group. Sounds were recorded and compared in fourteen clownfish species (some of which have never been recorded before) to evaluate the potential role of acoustic communication as an evolutionary driving force. Surprisingly, the relationship between fish size and both dominant frequency and pulse duration is not only species-specific; all the specimens of the 14 species are situated on exactly the same slope, which means the size of any Amphiprion can be predicted by both acoustic features. The number of pulses broadly overlaps among species, whereas the pulse period displays the most variation even if it shows overlap among sympatric species. Sound comparisons between three species (A. akallopisos, A. ocellaris and A. frenatus) having different types of teeth and body shape do not show differences neither in the acoustic waveform nor in the power spectrum. Significant overlap in acoustic features demonstrates that the sound-producing mechanism is highly conservative among species. Differences in the calls of some species are due to size dimorphism and the sound variation might be in this case a by-product. This morphological constraint does not permit a consideration of acoustic communication as the main driving force in the diversification of clownfishes. Moreover, calls are not produced to find mate and consequently are less subject to variations due to partner preference, which restricts the constraints of diversification. Calls are produced to reach and defend the competition to mate access. However, differences in the pulse period between cohabiting species show that, in some case, sounds can help to differentiate the species, to prevent competition between cohabiting species and to promote the diversification of taxa. [less ▲]

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See detailInterspecific variation of warning calls in piranhas: a comparative analysis
Melotte, Geoffrey ULiege; Vigouroux, Régis; Michel, Christian ULiege et al

Conference (2016, December 17)

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic ... [more ▼]

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic communication as a driving force in clade diversification. All piranha species showed the same kind of sound-producing mechanism: sonic muscles originate on vertebrae and attach to a tendon surrounding the bladder ventrally. Contractions of the sound-producing muscles force swimbladder vibration and dictate the fundamental frequency. It results the calling features of the eight piranha species logically share many common characteristics. In all the species, the calls are harmonic sounds composed of multiple continuous cycles. However, the sounds of Serrasalmus elongatus (higher number of cycles and high fundamental frequency) and S. manueli (long cycle periods and low fundamental frequency) are clearly distinguishable from the other species. The sonic mechanism being largely conserved throughout piranha evolution, acoustic communication can hardly be considered as the main driving force in the diversification process. However, sounds of some species are clearly distinguishable despite the short space for variations supporting the need for specific communication. Behavioural studies are needed to clearly understand the eventual role of the calls during spawning events. [less ▲]

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See detailInterspecific variation of warning calls in piranhas: a comparative analysis
Melotte, Geoffrey ULiege; Vigouroux, Régis; Michel, Christian ULiege et al

in Scientific Reports (2016)

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic ... [more ▼]

Fish sounds are known to be species-specific, possessing unique temporal and spectral features. We have recorded and compared sounds in eight piranha species to evaluate the potential role of acoustic communication as a driving force in clade diversification. All piranha species showed the same kind of sound-producing mechanism: sonic muscles originate on vertebrae and attach to a tendon surrounding the bladder ventrally. Contractions of the sound-producing muscles force swimbladder vibration and dictate the fundamental frequency. It results the calling features of the eight piranha species logically share many common characteristics. In all the species, the calls are harmonic sounds composed of multiple continuous cycles. However, the sounds of Serrasalmus elongatus (higher number of cycles and high fundamental frequency) and S. manueli (long cycle periods and low fundamental frequency) are clearly distinguishable from the other species. The sonic mechanism being largely conserved throughout piranha evolution, acoustic communication can hardly be considered as the main driving force in the diversification process. However, sounds of some species are clearly distinguishable despite the short space for variations supporting the need for specific communication. Behavioural studies are needed to clearly understand the eventual role of the calls during spawning events. [less ▲]

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See detailInterspecific variation of warning calls in piranhas: comparative analysis
Mélotte, Geoffrey ULiege; Michel, Christian ULiege; Vigouroux, Régis et al

Poster (2016, July)

Fish sounds are often considered as species-specific with unique temporal and spectral features. Differences between acoustic signals of closely related species could be considered as pre-zygotic barrier ... [more ▼]

Fish sounds are often considered as species-specific with unique temporal and spectral features. Differences between acoustic signals of closely related species could be considered as pre-zygotic barrier and could be related to the evolutionary history of the species. In the present study, sounds were recorded and compared in eight piranha species (Serrasalmus elongatus, Serrasalmus marginatus, Serrasalmus compressus, Serrasalmus manueli, Serrasalmus spilopleura, Serrasalmus rhombeus, Serrasalmus eigenmanni and Pygocentrus nattereri) in order to evaluate the potential role of acoustic communication as a driving force in the clade diversification. The same kind of sound-producing mechanism was found in all the species: sonic muscles originate on vertebrae and attach to a tendon surrounding ventrally the bladder. Contractions of the sound-producing muscles force swimbladder vibration. Having the same kind of sound-producing mechanism, the calling features of the eight piranha species show logically many common characteristics. In all the species, the calls are harmonic sounds composed of several pulses without inter-pulse interval. It was possible to discern species-specific sounds, but the differences among species could be, in part, explained by the size. Only the sounds of S. elongatus and S. manueli are really distinguishable from the other species. Serrasalmus elongatus differed by having a higher number of pulses and high-pitched fundamental frequency, whereas S. manueli differed by having long pulse periods and a low fundamental frequency. In the framework of this study, acoustic communication cannot be considered as the main driving force in the diversification process of piranhas. Behavioral studies are however needed to clearly understand the eventual role of the calls during the spawning events. [less ▲]

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See detailThe interstellar absorption lines of molecular origin
Swings, Polydore ULiege

in Journal of the Royal Astronomical Society of Canada (1941), 35

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See detailInterstellar Bubbles in Two Young H II Regions
Nazé, Yaël ULiege; Chu, You-Hua; Points, Sean D et al

in Astronomical Journal (The) (2001), 122

Massive stars are expected to produce wind-blown bubbles in the interstellar medium; however, ring nebulae, suggesting the existence of bubbles, are rarely seen around main-sequence O stars. To search for ... [more ▼]

Massive stars are expected to produce wind-blown bubbles in the interstellar medium; however, ring nebulae, suggesting the existence of bubbles, are rarely seen around main-sequence O stars. To search for wind-blown bubbles around main-sequence O stars, we have obtained high-resolution Hubble Space Telescope WFPC2 images and high-dispersion echelle spectra of two pristine H II regions, N11B and N180B, in the Large Magellanic Cloud. These H II regions are ionized by OB associations that still contain O3 stars, suggesting that the H II regions are young and have not hosted any supernova explosions. Our observations show that wind-blown bubbles in these H II regions can be detected kinematically, but not morphologically, because their expansion velocities are comparable to or only slightly higher than the isothermal sound velocity in the H II regions. Bubbles are detected around concentrations of massive stars, individual O stars, and even an evolved red supergiant (a fossil bubble). Comparisons between the observed bubble dynamics and model predictions show a large discrepancy (1-2 orders of magnitude) between the stellar wind luminosity derived from bubble observations and models and that derived from observations of stellar winds. The number and distribution of bubbles in N11B differ from those in N180B, which can be explained by the difference in the richness of stellar content between these two H II regions. Most of the bubbles observed in N11B and N180B show a blister structure, indicating that the stars were formed on the surfaces of dense clouds. Numerous small dust clouds, similar to Bok globules or elephant trunks, are detected in these H II regions, and at least one of them hosts on-going star formation. [less ▲]

Detailed reference viewed: 37 (0 ULiège)
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See detailInterstellar calcium towards supernova 1987A in the Large Magellanic Cloud
Magain, Pierre ULiege

in Nature (1987), 329

High-resolution and high SNR spectra of interstellar calcium towards SN1987A in the LMC are presented. They provide completely new results for the Ca I spectrum, in which 11 components are detected, not ... [more ▼]

High-resolution and high SNR spectra of interstellar calcium towards SN1987A in the LMC are presented. They provide completely new results for the Ca I spectrum, in which 11 components are detected, not only at velocities corresponding to the Galaxy and the LMC, but also at intermediate velocities. The spectra, which allow the ionization balance in these interstellar clouds to be estimated, provide some clues about their physical state and location. In particular, the components between 150 and 200 km/s show a much lower ionization degree than other components. This may be due to recent compressions of the gas by a shock, possibly associated with a former supernova explosion. This interpretation would require the corresponding clouds to be located inside the LMC, indicating that at least some intermediate velocity components are not of halo origin. [less ▲]

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See detailInterstellar Magnetic Fields-Observation and Theory -- R. Beck et R. Gräve
Manfroid, Jean ULiege

in Ciel et Terre (1988), 104

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See detailIntersterification of rapessed oil with anhydrous milk fat and its stearin fraction. I. Modifications of composition
Aguedo, Mario ULiege; Giet, Jean-Michel ULiege; Hanon, Emilien ULiege et al

in GCIRC Bulletin (2009), 25

Milk fat in human diet is associated with cardiovascular diseases due to its high content in saturated fatty acids and cholesterol. Most vegetable oils are much healthier as they are rich in unsaturated ... [more ▼]

Milk fat in human diet is associated with cardiovascular diseases due to its high content in saturated fatty acids and cholesterol. Most vegetable oils are much healthier as they are rich in unsaturated fatty acids (1,2). Lipase-catalysed interesterification of oils and fats has arisen as an alternative to hydrogenation or chemical processes to produce margarine and shortenings (3), notably because they do not give rise to undesirable trans fatty acids (4). The enzyme exchanges fatty acids from one triglyceride to another, resulting in a redistribution of fatty acids species. For such a reaction, the lipase of Thermomyces lanuginosa was shown to be an efficient tool in solvent-free fat blends batches and micro-aqueous conditions (5). Enzymatic interesterification can thus be used to enrich “hard” fats with unsaturated fatty acids (6,7). As an illustration, rapeseed oil (RO) (a choice source of unsaturation-rich residues) was used in the present study to enrich anhydrous milk fat (AMF) with unsaturated C18 fatty acids (FA) (oleic, linoleic and linolenic acids). Comparatively, one “harder” fraction of AMF underwent the same reaction. The physico-chemical properties modifications induced by the reaction were followed. The compositional changes are reported in this first part and the consequent physical modifications are presented in a second part. [less ▲]

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