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See detailOceanic forcing of Antarctic climate change: A study using a stretched-grid atmospheric general circulation model
Krinner, Gerhard; Largeron, Chloé; Ménégoz, Martin et al

in Journal of Climate (in press)

A variable-resolution atmospheric general circulation model (AGCM) is used for climate change projections over the Antarctic. The present-day simulation uses prescribed observed sea-surface conditions ... [more ▼]

A variable-resolution atmospheric general circulation model (AGCM) is used for climate change projections over the Antarctic. The present-day simulation uses prescribed observed sea-surface conditions, while a set of five simulations for the end of the 21st century (2070-2099) under the SRES-A1B scenario uses sea- surface condition anomalies from selected CMIP3 coupled ocean-atmosphere climate models. Analysis of the results shows that the prescribed sea-surface condition anomalies have a very strong influence on the simulated climate change on the Antarctic continent, largely dominating the direct effect of the prescribed greenhouse gas concentration changes in the AGCM simulations. Complementary simulations with idealized forcings confirm these results. An analysis of circulation changes using self-organizing maps shows that the simulated climate change on regional scales is not principally caused by shifts of the frequencies of the dominant circulation patterns, except for precipitation changes in some coastal regions. The study illustrates that in some respects the use of bias-corrected sea- surface boundary conditions in climate projections with a variable-resolution atmospheric general circulation model has some distinct advantages over the use of limited-area atmospheric circulation models directly forced by generally biased coupled climate model output. [less ▲]

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See detailLa traducción en el Borges de Bioy: una mirada lateral sobre la institución literaria
Willson, Patricia ULg

in Olea Franco, Rafael (Ed.) El legado de Borges (in press)

As with other writer’s journals, many entries of Borges by Adolfo Bioy Casares are related to spaces in dispute within the literary institution. One of these spaces is the literary import of texts from ... [more ▼]

As with other writer’s journals, many entries of Borges by Adolfo Bioy Casares are related to spaces in dispute within the literary institution. One of these spaces is the literary import of texts from foreign traditions. This article examines a selection of the journal entries about translation, not only from an aesthetical or theoretical standpoint, but also in connection to its concrete practice. [less ▲]

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See detailExpression microarray as a tool to identify candidate blood biomarkers in horses suffering from inflammatory airway disease
Ramery, Eve ULg; Fraipont, Audrey ULg; Art, Tatiana ULg et al

in Veterinary Clinical Pathology (in press)

Background: Inflammatory airway disease (IAD) affects performance and well-being in horses. Diagnosis is primarily reached by bronchoalveolar lavage (BAL) cytology but this is invasive and requires ... [more ▼]

Background: Inflammatory airway disease (IAD) affects performance and well-being in horses. Diagnosis is primarily reached by bronchoalveolar lavage (BAL) cytology but this is invasive and requires sedation. Objectives: The purpose of this study was to identify candidate blood biomarkers of IAD using species-specific expression microarrays. Methods: Horse Gene Expression Microarrays were used to investigate global mRNA expression in circulating leukocytes from healthy and IAD-affected standardbreds and endurance horses. Results: Nine genes were significantly differentially regulated in standardbreds and 61 in endurance horses (P < 0.001). These genes were mainly related to inflammation (eg. ALOX15B, PLA2G12B and PENK), oxidant/antioxidant balance (eg. DUOXA2 and GSTO1-1) and stress (eg. V1aR, GRLF1, Homer-2 and MAOB). DUOXA2, ALOX15B, PLA2G12B, MAOB and GRLF1 variations of expression were further validated by RT-qPCR. The deregulation of the oxidant/antioxidant balance was demonstrated at the protein level by an increase of glutathione peroxidase (GPx) activity in heparinised whole blood of IAD-affected standardbreds (P = 0.0025) and endurance horses (P = 0.0028). There was good correlation (r = 0.7354) between BAL neutrophil percentage and whole blood GPx activity in all horses. Conclusions: There is accumulating evidence that, even when systemic clinical signs are not evident, circulating leukocyte gene expression can reflect responses of other tissues, leading to potential diagnostic applications in the future. Although not specific for IAD, whole blood GPx activity appears to reflect BAL neutrophil percentage. This finding should be further assessed by testing a larger number of horses. [less ▲]

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See detailBryophytes diversified slowly but surely since the mid-Mesozoic
Laenen, B.; Shaw, B.; Schneider, H. et al

in Nature Communications (in press)

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See detailDynamic single-cell analysis of Saccharomyces cerevisiae under process perturbation: comparison of different methods for monitoring the intensity of population heterogeneity
Delvigne, Frank ULg; Baert, Jonathan ULg; Gofflot, Sébastien et al

in Journal of Chemical Technology & Biotechnology (in press)

BACKGROUND: Single cell biology has attracted a lot of attention these past few years and has led to numerous fundamental results pointing out the heterogeneity of clonal cell populations. In this context ... [more ▼]

BACKGROUND: Single cell biology has attracted a lot of attention these past few years and has led to numerous fundamental results pointing out the heterogeneity of clonal cell populations. In this context, microbial phenotypic heterogeneity under bioprocessing conditions needs to be further investigated. In this study, yeast based processes have been investigated by using on-line flow cytometry in combination with a fluorescent transcriptional reporter (GFP) and viability fluorescence tags (propidium iodide, PI). Methods aiming at expressing the dispersion of these fluorescence tags among the yeast populations have been investigated for different bioreactor operating conditions. RESULTS: Yeast viability was determined on the basis of PI uptake. Segregation between PI negative and positive subpopulations could be efficiently quantified on the basis of the mean-to-median ratio or the amplitude of the interquartile range. On the other hand, the same quantification could not be made for the segregation occurring at the level of GFP synthesis. Indeed, when cells were exposed to sub-lethal or mild stresses (such as in scale-down reactors) two GFP subpopulations could be visualized by real-time FC, but quantification by one of the above-mentioned methods was not possible. CONCLUSIONS: Yeast population heterogeneity was observed in representative bioreactor operating conditions. Difficulties for the determination of segregation at the level of GFP synthesis point out the fact that one needs to understand the segregation mechanisms for the applied fluorescent reporters, to judge whether simple mathematical tools may be applied or if more sophisticated computational tools are needed for the quantification of the microbial population segregation. [less ▲]

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See detailDynamics of Environmental Migration
Gemenne, François ULg; Jäger, Jill; Entzinger, Han

Book published by Palgrave Macmillan (in press)

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See detailJouer, chanter et danser pour Isis
Veymiers, Richard ULg

in Gasparini, Valentino; Veymiers, Richard (Eds.) The Agents of Isiac Cults. Proceedings of the VIth International Conference of Isis Studies, Erfurt, May 6-8 2013 – Liège, September 23-24 2013 (in press)

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See detailDistribution des propriétés morphologiques et chimiques d’un sol le long d’un versant forestier
Deraedt, Deborah ULg; Degré, Aurore ULg; Colinet, Gilles ULg

in Revue Forestière Française (in press)

La fertilité d’un sol conditionne la productivité des plantes, c’est pourquoi il est intéressant de connaitre la distribution des caractéristiques chimiques et morphologiques du sol afin de permettre une ... [more ▼]

La fertilité d’un sol conditionne la productivité des plantes, c’est pourquoi il est intéressant de connaitre la distribution des caractéristiques chimiques et morphologiques du sol afin de permettre une exploitation et une gestion optimales de celui-ci. Un versant forestier, en pente forte (140m de long, 40m de dénivelée), sur matériaux schisto-gréseux et sous une plantation de résineux fait l’objet d’un suivi du fonctionnement hydrodynamique et pédochimique en relation avec le développement des arbres. Au vu du contexte de forte pente, nous suspectons la présence d’apports par solifluction. La position dans le versant est souvent un facteur de différenciation des sols et, en préalable à l’étude de l’évolution temporelle des propriétés des sols et de la végétation et de l’évolution spatiale des flux d’eau, nous nous sommes attachés à la caractérisation de la distribution des propriétés morphologiques et chimiques le long du versant. Huit fosses ont été creusées et échantillonnées selon les horizons. Outre les descriptions selon un protocole standardisé, nous avons effectué des comptages racinaires, des mesures de densité apparente et de charge caillouteuse. Les analyses en laboratoire visent la caractérisation du statut nutritif : pH, teneurs échangeables (NH4Cl) en K, Mg, Na et Ca, et P assimilable (Dyer). Les résultats confirment l’importance de la différenciation verticale au sein des profils. On notera également une légère tendance à la hausse du pH et des teneurs en éléments nutritifs entre le haut et le bas du versant, à l’exception du dernier profil de la séquence. [less ▲]

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See detailLe Portrait d'homme en armure de Giovanni Gerolamo Savoldo, un portrait présumé de Gaston de Foix
Fagnart, Laure ULg

in Barreto, Joana (Ed.) Actes de la journée d'études Voir Gaston de Foix. La construction paradoxale d'un mythe national (in press)

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See detailLouise de Savoie (1476-1531)
Brioist, Pascal; Fagnart, Laure ULg; Michon, Cédric

Book published by Presses universitaires François-Rabelais de Tours / Presses universitaires de Rennes (in press)

Blâmée par Jules Michelet, en raison d'un goût que l'historien du XIXe siècle estime trop prononcé pour les intrigues, Louise de Savoie (1476-1531) est sans conteste l'une des personnalités les plus ... [more ▼]

Blâmée par Jules Michelet, en raison d'un goût que l'historien du XIXe siècle estime trop prononcé pour les intrigues, Louise de Savoie (1476-1531) est sans conteste l'une des personnalités les plus fascinantes de la première Modernité européenne. Comtesse puis duchesse d'Angoulême, Louise n'est pas seulement la mère de deux illustres enfants, Marguerite et François, futur François Ier. Elle se charge de leur éducation ; une fois son fils devenu le roi de France, elle devient un conseiller des plus influents, avant d'assurer, à deux reprises, la régence du royaume. Amatrice d'art et bibliophile avertie, son action concerne encore la musique, la littérature et l'architecture. Les textes rassemblés dans cet ouvrage - issu d'un colloque tenu, en décembre 2010, à Romorantin-Lanthenay, où Louise possédait le château et des terres sur lesquelles Léonard de Vinci avait projeté d'édifier une ville nouvelle pour la cour - ambitionnent de passer en revue tant les aspects biographiques du personnage, que son action dans le champ politique, religieux et culturel. [less ▲]

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See detail« Observation relative au poème Un Coup de Dés jamais n’abolira le Hasard par Stéphane Mallarmé » : une préface d’un nouveau genre ?
Durand, Pascal ULg

in Björn-Olav, Dozo; Saint-Amand, Denis (Eds.) Jeux et enjeux de la préface (in press)

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See detailPolysaccharide-coated PCL nanofibers for wound dressing applications
Croisier, Florence ULg; Atanasova, Ganka; Poumay, Yves et al

in Advanced Healthcare Materials (in press)

Polysaccharide-based nanofibers with amultilayered structure are prepared by combining electrospinning (ESP) and layer-by-layer (LBL) deposition techniques. Charged nanofibers are firstly prepared by ... [more ▼]

Polysaccharide-based nanofibers with amultilayered structure are prepared by combining electrospinning (ESP) and layer-by-layer (LBL) deposition techniques. Charged nanofibers are firstly prepared by electrospinning poly(ε-caprolactone) (PCL) with a block-copolymer bearing carboxylic acid functions. After deprotonation of the acid groups, the layer-by-layer deposition of polyelectrolyte polysaccharides, notably chitosan and hyaluronic acid, is used to coat the electrospun fibers. A multilayered structure is achieved by alternating the deposition of the positively charged chitosan with the deposition of a negatively charged polyelectrolyte. The construction of this multi-layered structure is followed by Zeta potential measurements, and confirmed by observation of hollow nanofibers resulting from the dissolution of the PCL core in a selective solvent. These novel polysaccharide-coated PCL fiber mats remarkably combine the mechanical resistance typical of the core material (PCL) – particularly in the hydrated state –, with the surface properties of chitosan. The control of the nanofiber structure offered by the electrospinning technology, makes the developed process very promising to precisely design biomaterials for tissue engineering. Preliminary cell culture tests corroborate the potential use of such system in wound healing applications. [less ▲]

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See detailEffet du mode de conservation d’huile de Jatropha curcas L. sur son efficacité dans la lutte contre les principaux insectes ravageurs du niébé (Vigna unguiculata (L.) Walp. au Niger
Abdoul Habou, zakari; Toudou, Adam; Haubruge, Eric ULg et al

in Tropicultura (in press)

Jatropha curcas oil has an insecticidal activity harnessed by the farmers in Niger. In this study, we compared the insecticidal activity of two batches of oil conserved during 70 days, one exposed to ... [more ▼]

Jatropha curcas oil has an insecticidal activity harnessed by the farmers in Niger. In this study, we compared the insecticidal activity of two batches of oil conserved during 70 days, one exposed to light and the other kept in the dark. The insecticidal efficacy was evaluated in a field with three concentrations (5, 10 and 15%) trial on the main pests of Cowpea (Vigna unguiculata (L.) Walp) and in a laboratory test on Megalurothrips sjostedti Trybon (Thysanoptera: Thripidae) with different concentrations of crude oil (50; 100; 150 and 200 µl). No difference in insecticidal effect was found between the two modes of oil conservation, both in the laboratory and in the field. In the field, regardless of the mode of conservation, the concentrations of 10% of J. curcas oil enables a reduction of over than 80% of thrips, aphids, and bugs compared to the control. Its increased seeds yield more than 50%. The concentration of 15% gives an insecticidal effect comparable to that of the reference treatment (deltaméthrine) but induces phytotoxicity symptoms on the leaves of Cowpea. [less ▲]

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See detailL'antipsychologisme de Brentano
Boccaccini, Federico ULg

in Gyemant, Maria (Ed.) Psychologie et psychologisme (in press)

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See detailDevonian antiarch placoderms from Belgium revisited
Olive, Sébastien ULg

in Acta Palaeontologica Polonica (in press)

Anatomical, systematic, and paleobiogeographical data on the Devonian antiarchs from Belgium are reviewed, updated and completed thanks to new data from the field and re-examination of paleontological ... [more ▼]

Anatomical, systematic, and paleobiogeographical data on the Devonian antiarchs from Belgium are reviewed, updated and completed thanks to new data from the field and re-examination of paleontological collections. The material of Bothriolepis lohesti Leriche, 1931 is enhanced and the species better described. An undetermined species of Bothriolepis is recorded from the Famennian of Modave (Liège Province), one species of Asterolepis redescribed from the Givetian of Hingeon and another one described from the Givetian of Mazy (Namur Province). Grossilepis rikiki sp. nov. is recorded from the Famennian tetrapod-bearing locality of Strud (Namur Province) and from the Famennian of Moresnet (Liège Province). It is the first occurrence of Grossilepis after the Frasnian and on the central southern coast of the Euramerican continent. Its occurrence in the Famennian of Belgium may be the result of a late arrival from the Moscow Platform and the Baltic Depression, where the genus is known from Frasnian deposits. Remigolepis durnalense sp. nov. is described from the Famennian of Spontin near Durnal (Namur Province). Except for the doubtful occurrence of Remigolepis sp. in Scotland, this is the first record of this genus in Western Europe. Its occurrence in Belgium reinforces the strong faunal affinities between Belgium and East Greenland and the hypothesis of a hydrographical link between the two areas during the Late Devonian. [less ▲]

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See detailFin de siècle/Jahrhundertwende: Eine Tendenzgeschichte
Küpper, Achim ULg

in Roland, Hubert (Ed.) Eine kleine deutsch-französische Literaturgeschichte vom 18. Jahrhundert bis zum Ersten Weltkrieg (in press)

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See detailEffect of bovine colostrum intake on growth, reproductive parameters and survival in red kids
Harouna, Abdou; Marichatou, Hamani; Beckers, Jean-François ULg et al

in Journal of Animal Physiology & Animal Nutrition (in press)

The aim of this study is to evaluate the efficacy of frozen Azawak colostrum supplementation on body weight (BW), average daily gain (ADG), reproductive parameters (mean age at first parturition ... [more ▼]

The aim of this study is to evaluate the efficacy of frozen Azawak colostrum supplementation on body weight (BW), average daily gain (ADG), reproductive parameters (mean age at first parturition, fertility, fecundity, prolificacy) and mortality rate among red kids. The study was conducted at the goat farm secondary centre of Maradi in Niger from September 2010 to September 2011. The control animals (n = 20) were left with their mother, while the treatment animals (n = 20) received in addition 50 ml/animal/day of bovine colostrum at birth and 15 ml/animal/day from d2 to d15. Weight was measured weekly from birth to d365. Mortalities were also recorded over the same period. For reproductive parameters, observations began at weaning (d197). Growth rate was higher (p < 0.001) in supplemented animal, and the treatment effects on ADG were observed up to 150 day after the end of supplementation. A similar long-lasting trend was also observed in relation to the mortality rate (25% for ColG vs. 55% for ConG; p = 0.05). The age at first kidding tended to be lower in the treated group (13.8 0.7 vs. 14.1 0.8 month; p < 0.1). In conclusion, mild bovine colostrum supplementation induces a long-lasting positive impact on growth rate and to a lower extent on reproduction parameters and survival rate. [less ▲]

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See detailLes progrès de la poésie en 1867. Portrait de Gautier en grand rapporteur
Durand, Pascal ULg

in Saminadayar-Perrin, Corinne (Ed.) Théophile Gautier et l'invention médiatique de l'histoire littéraire (in press)

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See detailThe sensitive period for male to female sex reversal begins at the embryonic stage in the Nile tilapia and is associated with the sexual genotype
Gennotte, Vincent ULg; Mélard, Charles ULg; D'Cotta, Helena et al

in Molecular Reproduction and Development (in press)

In this study, we applied feminization treatments of 4 h on XY (17α-ethynylestradiol 2000 µg l-1) and YY (6500 µg l-1) Nile tilapia embryos on the first dpf. The mechanism of early sex reversal was ... [more ▼]

In this study, we applied feminization treatments of 4 h on XY (17α-ethynylestradiol 2000 µg l-1) and YY (6500 µg l-1) Nile tilapia embryos on the first dpf. The mechanism of early sex reversal was investigated by searching for changes in the expression profiles of some sex-differentiating genes in the brain (cyp19a1b, foxl2 and amh) and in sexual steroids (testosterone, 17β-estradiol and 11-ketotestosterone) concentrations during embryogenesis and gonad differentiation. No sex reversal was observed in YY but sex reversal rates in XY progenies ranged from 0 to 60 %. These results, together with the clearance profile of 17α-ethynylestradiol confirmed the existence of an early sensitive period for sex determination encompassing embryonic and larval development, prior to any sign of gonad differentiation. The estrogen treatment induced an increased expression of cyp19a1b and a higher level of testosterone and 17β-estradiol at 4 dpf in XY and YY. Foxl2 and amh were repressed at 4 dpf and expression levels were not different between treated and control groups at 14 dpf suggesting that foxl2 did not control cyp19a1b in the brain of tilapia embryos. Increased cyp19a1b expression in treated embryos could reflect a sign of early brain sexualization but alone cannot account for the sex reversal effect as the treatment was ineffective in YY. The differential sensitivity of XY and YY genotypes to embryo induced-feminization suggests that a sex determinant on the sex chromosomes, either a Y repressor or an X activator may influence the sex reversal during the first steps of tilapia embryogenesis. [less ▲]

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See detailThe ideology of the British National Party
Jamin, Jérôme ULg

in Revue LISA : Littératures, Histoire des Idées, Images, Sociétés du Monde Anglophone = LISA e-Journal (in press)

Detailed reference viewed: 21 (8 ULg)