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See detailAOB community structure and richness under European beech, sessile oak, Norway spruce and Douglas-fir at three temperate forest sites
Malchair, Sandrine ULg; Carnol, Monique ULg

in Plant and Soil (2013), 366(1-2),

Abstract Background and aims The relations between tree species, microbial diversity and activity can alter ecosystem functioning. We investigated ammonia oxidizing bacteria (AOB) community structure and ... [more ▼]

Abstract Background and aims The relations between tree species, microbial diversity and activity can alter ecosystem functioning. We investigated ammonia oxidizing bacteria (AOB) community structure and richness, microbial/environmental factors related to AOB diversity and the relationship between AOB diversity and the nitrification process under several tree species. Methods Forest floor (Of, Oh) was sampled under European beech, sessile oak, Norway spruce and Douglas-fir at three sites. AOB community structure was assessed by PCR-DGGE and sequencing. Samples were analyzed for net N mineralization, potential nitrification, basal respiration, microbial biomass, microbial or metabolic quotient, pH, total nitrogen, extractable ammonium, organic matter content and exchangeable cations. Results AOB community structure and tree species effect on AOB diversity were site-specific. AOB richness was not related to nitrification. Factors regulating ammonium availability, i.e. net N mineralization or microbial biomass, were related to AOB community structure. Conclusion Our research shows that, at larger spatial scales, site specific characteristics may be more important than the nature of tree species in determining AOB diversity (richness and community structure). Within sites, tree species influence AOB diversity. The absence of a relation between AOB richness and nitrification points to a possibly role of AOB abundance, phenotypic plasticity or the implication of ammonia oxidizing archaea. [less ▲]

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See detailWinged Promises: Exploring the Discourse on Transgenic Mosquitoes in Brazil
Reis-Castro, Luisa; Hendrickx, Kim ULg

in Technology in Society (2013), 35(2),

The bioeconomy is a strategic program strongly promoted within OECD countries. This paper discusses an example of how the purposes and promises of the bioeconomy are enacted in Brazil, in line with local ... [more ▼]

The bioeconomy is a strategic program strongly promoted within OECD countries. This paper discusses an example of how the purposes and promises of the bioeconomy are enacted in Brazil, in line with local environmental and political specificities. We focus on scientific and political discourse portraying a technological solution to fight dengue disease as a public health problem. The technology involves genetically modified mosquitoes that are released into the environment in order to suppress populations of disease-carrying mosquitoes. We show how the promise of fighting dengue, through technical and scientific arguments, becomes connected to political discourse about the welfare and 'progress' of Brazil as a nation. We argue that this connection comes about through two types of rhetoric devices that downplay risk and uncertainties in favor of the promises inscribed in laboratory-bred mosquitoes. In line with a basic tenet in the field of Science and Technology Studies, it becomes clear that science and politics are intertwined in both discourse and practice. In addition, we highlight the experimental and political character of public health interventions from a spatial perspective. The mosquitoes are set free in an environment that is considered a natural environment while at the same time responding to certain laboratory conditions such as relative isolation. In addition, the genetically modified mosquitoes, as bio-objects, are expected to act like natural mosquitoes in the wild. With these types of proximity between technology and nature in mind, we argue that the mosquitoes are meant not only to enact the pest management program they have been designed for, but also a political program claiming an avant-garde position of Brazil in a global bioeconomy. [less ▲]

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See detailComputation of worst operation scenarios under uncertainty for static security management
Capitanescu, Florin; Wehenkel, Louis ULg

in IEEE Transactions on Power Systems (2013), 28(2), 1697-1705

This paper deals with day-ahead static security assessment with respect to a postulated set of contingencies while taking into account uncertainties about the next day system conditions. We propose a ... [more ▼]

This paper deals with day-ahead static security assessment with respect to a postulated set of contingencies while taking into account uncertainties about the next day system conditions. We propose a heuristic approach to compute the worst-case under operation uncertainty for a contingency with respect to overloads. We formulate this problem as a non-convex nonlinear bilevel program that we solve approximately by a heuristic approach which relies on the solution of successive optimal power flow (OPF) and security-constrained optimal power flow (SCOPF) problems of a special type. The method aims at revealing those combinations of uncertainties and contingencies for which the best combination of preventive and corrective actions would not suffice to ensure security. Extensive numerical results on a small, a medium, and a very large system prove the interest of the approach. [less ▲]

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See detailL’océan borderline, troubles des états limites, récits de voyage. Cancrini, L. (2009). Bruxelles, De Boeck
Aubinet, Suzanne ULg

in Carnet de notes sur les maltraitances infantiles (2013), 131(1), 22

L’ouvrage de Luigi Cancrini, l’Océan Borderline, et le regard nouveau, complexe et intégré qu’il propose nous semble une ressource intéressante et riche pour la prise en charge et la réflexion sur les ... [more ▼]

L’ouvrage de Luigi Cancrini, l’Océan Borderline, et le regard nouveau, complexe et intégré qu’il propose nous semble une ressource intéressante et riche pour la prise en charge et la réflexion sur les situations cliniques de maltraitance. Au sein de son ouvrage où il conceptualise les troubles borderline sous la forme d’un océan entouré de deux continents, la névrose et la psychose, l’auteur défend l’idée que les difficultés psychopathologiques des individus se référeraient bien plus à un fonctionnement contextuel et ponctuel qu’à une structure fixe et atemporelle de la personnalité. [less ▲]

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See detailMDRD versus CKD-EPI equation to estimate glomerular filtration rate in kidney transplant recipients
Masson, Ingrid; Flamant, Martin; Maillard, Nicolas et al

in Transplantation (2013), 95(10), 1211-1217

Background. The new Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) creatinine-based equation was developed to address the systematic underestimation of the glomerular filtration rate (GFR) by ... [more ▼]

Background. The new Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) creatinine-based equation was developed to address the systematic underestimation of the glomerular filtration rate (GFR) by the Modification of Diet in Renal Disease (MDRD) Study equation in patients with a relatively well-preserved kidney function. The performance of the new equation for kidney transplant recipients is discussed. Methods. We analyzed the performances of the CKD-EPI equation in comparison with the MDRD Study equation in 825 stable kidney transplant recipients. Bias, precision, and accuracy within 30% of true GFR were determined. GFR was measured by urinary clearance of inulin (n=488) and plasma clearance of 51Cr-EDTA (n=337). Results. Mean measured GFR (mGFR) was 50T19 mL/min/1.73 m2. On the whole cohort, bias was significantly lower for MDRD Study equation compared with CKD-EPI creatinine. This superiority translates into a better accuracy (80% and 74% for the MDRD and CKD-EPI creatinine, respectively). The best performance of the MDRD Study equation is confirmed both in the subgroups of patients with mGFR G60 mL/min/1.73 m2 and between 60 and 90 mL/min/1.73 m2. For mGFR 990 mL/min/1.73 m2, there were no significant differences between the two equations in terms of performance. Conclusions. The CKD-EPI creatinine equation does not offer a better GFR prediction in renal transplant patients compared with the MDRD Study equation, even in the earlier CKD stages. [less ▲]

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See detailChemical surface inhomogeneities in late B-type stars with Hg and Mn peculiarity: I. Spot evolution in HD 11753 on short and long time scales
Korhonen, Heidi; Gonzalez, J.F.; Briquet, Maryline ULg et al

in Astronomy and Astrophysics (2013), 553

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See detailL'implantation de la vaccination contre le papillomavirus en PSE
Miermans, Marie-Christine ULg; Swennen, Béatrice; Vermeeren, Axelle

in Education Santé (2013), (289), 8-13

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See detailReconstructing and Tracking Network State from a Limited Number of Synchrophasor Measurements
Glavic, Mevludin; Van Cutsem, Thierry ULg

in IEEE Transactions on Power Systems (2013), 28

A method is proposed to reconstruct and track network state from a limited number of Phasor Measurement Unit (PMU) data. To deal with the resulting unobservability, the state with bus powers and generator ... [more ▼]

A method is proposed to reconstruct and track network state from a limited number of Phasor Measurement Unit (PMU) data. To deal with the resulting unobservability, the state with bus powers and generator voltages closest to previously estimated values is computed. Those values, treated as pseudomeasurements, are obtained from the last reconstructed state, in a recursive manner. The method involves solving an optimization problem with linear constraints. It is scalable insofar as it accommodates from a few PMUs up to configurations ensuring full network observability. Reconstruction of only a region is possible. These and other features are demonstrated on the Nordic32 test system, with synchronized phasors obtained from detailed time simulation of a situation evolving towards instability. Suitable choices of PMU location and pseudo-measurements are also discussed. [less ▲]

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See detailLe rôle des RH dans l'entreprise tendue vers l'innovation
Pichault, François ULg; Picq, Thierry

in Revue Française de Gestion (2013), 39(233), 161-182

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See detailGestion et prévention des hypomagnésémies
Gaillot, Claire ULg; Guyot, Hugues ULg

in Point Vétérinaire (2013), (Numéro spécial rural), 142-148

Magnesium plays an important role at different levels in the body. It is absorbed essentially in the rumen. Numerous factors, such as an increase in the ruminal concentration of potassium, interfere with ... [more ▼]

Magnesium plays an important role at different levels in the body. It is absorbed essentially in the rumen. Numerous factors, such as an increase in the ruminal concentration of potassium, interfere with the bioavailability of magnesium in the body. There is no hormonal control of magnesium, so prevention of hypomagnesaemia is by intake of magnesium supplementation in the ration and management of risk factors. The different forms of tetany are treated in the same manner, that is, by perfusion of the animal and corrective supplementation for the at-risk animals on the farm. [less ▲]

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See detailFertilization Effects on the Chemical Composition and In Vitro Organic Matter Digestibility of Semi-natural Meadows as Predicted by NIR Spectrometry
Dale, Laura ULg; Thewis, André ULg; Rotar, Ioan et al

in Notulae Botanicae Horti Agrobotanici Cluj-Napoca (2013), 41(1), 42-48

Management of livestock grazing in highly-productive mountain meadows is an important aspect for the economic viability and the environmental impact of a grassland-based farm. The main aim of this study ... [more ▼]

Management of livestock grazing in highly-productive mountain meadows is an important aspect for the economic viability and the environmental impact of a grassland-based farm. The main aim of this study was to build near infrared models to determine the chemical composition and in vitro organic matter digestibility of Romanian meadow forages. The treatments were organic and mineral fertilizer combinations, and forage samples were obtained from three fertilization experiments conducted in the Apuseni Mountains; these samples were analysed using classical and NIR methods. The samples were scanned in the NIR wavelength band. The CRA-W Gembloux ‘local’ calibration models were validated with Romanian meadow forages and then used in order to predict the forage quality of samples. A second objective of the study was to determine the effects of fertilization on forage quality. The results showed a decrease in crude protein content from the NPK treatment (150:75:75), which can be explained by a reduction of Fabaceae plants with this treatment from 17.25% of the populations in the control (semi-natural meadow not fertilized) to 6.25% in the fertilized plots. The decrease in protein content and in vitro organic matter digestibility was related to a reduced Fabaceae presence. Our recommendation is to use mineral fertilization with NPK doses less than 100:50:50 to improve meadow productivity; meanwhile organic fertilization can also be used to complement and maintain biodiversity and forage quality. [less ▲]

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See detailLes venins d'animaux, nouvelle panacée?
Echterbille, Julien ULg; Quinton, Loïc ULg; De Pauw, Edwin ULg

in Athena (2013)

Araignées, serpents, scorpions,… autant d’animaux ayant une place particulière dans l’imaginaire collectif. Fascinants, horripilants voire même terrifiants, les adjectifs ne manquent pas pour qualifier ... [more ▼]

Araignées, serpents, scorpions,… autant d’animaux ayant une place particulière dans l’imaginaire collectif. Fascinants, horripilants voire même terrifiants, les adjectifs ne manquent pas pour qualifier les réactions qu’ils suscitent auprès des populations. Que dire alors de la peur engendrée par leur venin. Une simple piqûre, morsure ou contact peut s’avérer extrêmement dangereux voire létal... [less ▲]

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See detailDerivation of flow and transport parameters from outcropping sediments of the Neogene aquifer, Belgium
Rogiers, Bart; Beerten, K.; Smeekens, T. et al

in Geologica Belgica (2013), 16(3), 129-147

Centimetre-scale saturated hydraulic conductivities (K) are derived from air permeability measurements on a selection of outcrops of the Neogene aquifer in the Campine area, Belgium. Outcrop sediments are ... [more ▼]

Centimetre-scale saturated hydraulic conductivities (K) are derived from air permeability measurements on a selection of outcrops of the Neogene aquifer in the Campine area, Belgium. Outcrop sediments are of Miocene to Quaternary age and have a marine to continental origin. Grain size analyses for the same outcrops and corresponding K predictions using previously developed models are also presented. We discuss outcrop hydrogeological properties and quantify the heterogeneity within the outcrops in detail using geostatistical variography. Moreover, outcrop-scale K values, their anisotropy and dispersivities are numerically calculated as a means to upscale such small-scale measurements to a larger scale commensurate with the scale of flow and transport modelling. By studying the small-scale variability as observed in outcrops, we gain crucial understanding of the larger-scale behaviour of the corresponding hydrogeological units within the Neogene aquifer, the most important groundwater reservoir of Flanders. The results of this study will equally improve conceptual hydrogeological model building and parameterization. [less ▲]

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See detailGenotypic and phenotypic characterisation of methicillin-resistant Staphylococcus aureus (MRSA) isolated from milk of bovine mastitis
Bardiau, Marjorie ULg; Yamazaki, Kazuko; Duprez, Jean-Noel et al

in Letters in Applied Microbiology (2013)

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See detailA micro-meso-model of intra-laminar fracture in fi ber-reinforced composites based on a Discontinuous Galerkin/Cohesive Zone Method
Wu, Ling ULg; Tjahjanto, Denny; Becker, Gauthier ULg et al

in Engineering Fracture Mechanics (2013), 104

The recently developed hybrid discontinuous Galerkin/extrinsic cohesive law framework is extended to the study of intra{laminar fracture of composite materials. Toward this end, micro-volumes of di erent ... [more ▼]

The recently developed hybrid discontinuous Galerkin/extrinsic cohesive law framework is extended to the study of intra{laminar fracture of composite materials. Toward this end, micro-volumes of di erent sizes are studied. The method captures the debonding process, which is herein proposed to be assimilated to a damaging process, before the strain softening onset, and the density of dissipated energy resulting from the damage (debonding) remains the same for the di erent studied cell sizes. Finally, during the strain softening phase a micro{crack initiates and propagates in agreement with experimental observations. We thus extract a resulting mesoscale cohesive law, which is independent on the cell sizes, using literature methods. [less ▲]

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See detailJ.E. Skinner, The Invention of Greek Ethnography: From Homer to Herodotus. Oxford, University Press, 2012.
Caneva, Stefano ULg

in Bryn Mawr Classical Review [=BMCR] (2013), 2013.05.05

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See detailHyperfine-structure splitting of the 716 nm R(90)3–10 molecular iodine transition
Huet, Nicolas ULg; Krins, Stéphanie ULg; Dubé, Pierre et al

in Journal of the Optical Society of America. B, Optical Physics (2013), 30

We report on the hyperfine-structure splitting of the 716 nm R 90 3–10 molecular iodine transition. We show that this particular iodine line provides a very useful frequency reference in the context of a ... [more ▼]

We report on the hyperfine-structure splitting of the 716 nm R 90 3–10 molecular iodine transition. We show that this particular iodine line provides a very useful frequency reference in the context of a laser cooling experiment of iron atoms, an atomic species that has so far never been laser cooled and trapped to our knowledge. We provide experimental values for the hyperfine constants ΔeQq and ΔC of the investigated iodine transition. Dispersive signals of this transition are also presented and used to lock the frequency of a Ti:sapphire laser. The reported stabilization performance is fully compatible with the requirements of a laser cooling experiment of iron atoms. [less ▲]

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See detailL’ALCOOLISME, UN MODÈLE D’ADDICTION AUX COMPLICATIONS SOMATIQUES MULTIPLES
PAQUOT, Nicolas ULg; DE FLINES, Jenny ULg; SCHEEN, André ULg

in Revue Médicale de Liège (2013), 68(5-6), 272-280

Alcoholism is, after smoking, the most common addiction in our society. It is associated with multiple familial, social and professional negative consequences. In addition, alcohol disturbs cellular ... [more ▼]

Alcoholism is, after smoking, the most common addiction in our society. It is associated with multiple familial, social and professional negative consequences. In addition, alcohol disturbs cellular metabolism and its excessive chronic consumption may lead to multiple dysfunctions that can provoke somatic complications targeting numerous tissues or organs. The present article describes the most important ones involving the liver, the digestive tract, the heart, both the central and peripheral nervous system, and bone marrow. We also discuss the metabolic disturbances associated with chronic alcohol consumption, among which those affecting glucose regulation, lipid profile, uric acid and various vitamins. Finally, we describe the nutritional deficiencies that may be observed in alcoholic people and may contribute to aggravate somatic complications. [less ▲]

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See detailBovine lymphotropic herpesvirus detected in Belgium
Garigliany, Mutien-Marie ULg; Bayrou, Calixte ULg; Cassart, Dominique ULg et al

in Veterinary Record : Journal of the British Veterinary Association (2013), 172

The bovine lymphotropic herpesvirus was detected for the first time outside the US, Canada and UK in a cow with nonresponsive chronic metritis.

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See detailL'héroïne
Demaret, Isabelle ULg; Lemaître, André ULg; Ansseau, Marc ULg

in Revue Médicale de Liège (2013), 68(5-6), 287

Summary : Heroin (or diacetylmorphine), a depressant of the nervous central system, is a semi-synthetic opiate. Its main adverse effect, respiratory depression, can lead to death, especially after an ... [more ▼]

Summary : Heroin (or diacetylmorphine), a depressant of the nervous central system, is a semi-synthetic opiate. Its main adverse effect, respiratory depression, can lead to death, especially after an intravenous injection. By loss of tolerance, an overdose can be lethal following heroin use after a period of abstinence (voluntary or not). Mortality rate among heroin users is between 1 and 3%. Addiction, following a regular and continuous use, occurs in less than a quarter of persons who ever tried heroine. Heroin addicts often present with different problems (for instance, a criminal behaviour), without any obvious link with addiction. For a fraction of the addicts, addiction becomes a chronic relapsing disease, requiring a long term maintenance substitution therapy. However, relapses and sometimes continuous heroin use are frequent. For treatment resistant and severe heroin addicts, heroinassisted treatment can be a solution. Despite the numerous available therapies, heroin is considered to be the drug with the most negative effects on the user. [less ▲]

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See detailJean Baubérot : La laïcité au pluriel
Jacquemain, Marc ULg

in Politique : Revue de Débats (2013), 80

Le travail de Jean Baubérot autour de la laîcité française est à la fois celui d'un historien, d'un sociologue et d'un théoricien politique. L'article tente de synthétiser sa réflexion à partir de ses ... [more ▼]

Le travail de Jean Baubérot autour de la laîcité française est à la fois celui d'un historien, d'un sociologue et d'un théoricien politique. L'article tente de synthétiser sa réflexion à partir de ses principaux textes récents. Il met en évidence la "provincialisation" de la laïcité à la française, qui parcourt toute l'oeuvre du sociologue, où celui-ci développe l'idée que la France n'est qu'un modèle de laicité parmi bien d'autres. Par ailleurs, comme Baubérot y insiste, il faut faire une différence marquée entre la laïcité "narrative", à savoir les récits qui s'expriment dans le débat public, et les pratiques réelle, souvent plus accomodantes. Enfin, cette laïcité narrative tend à faire dériver la laïcité comme ensemble de principes politiques vers une conception "culturaliste" qui tendrait à en faire un marqueur identitaire français. [less ▲]

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See detailGeodesics on a supermanifold and projective equivalence of superconnections
Leuther, Thomas ULg; Radoux, Fabian ULg; Tuynman, Gijs

in Journal of Geometry & Physics (2013), 67

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See detailHepatitis B virus and hepatitis C virus infection in Belgium: similarities and differences in epidemic and initial management
De Vroey, B; Moreno, C; Laleman, W et al

in European Journal of Gastroenterology & Hepatology (2013), 25(5), 613-619

Introduction Nationwide studies comparing patients with hepatitis B and C virus (HBV and HCV) infections are mandatory for assessing changes in epidemiology. Aim The aim of this study was to compare ... [more ▼]

Introduction Nationwide studies comparing patients with hepatitis B and C virus (HBV and HCV) infections are mandatory for assessing changes in epidemiology. Aim The aim of this study was to compare epidemiological data and initial management of newly diagnosed patients with persistent HBV (HBsAg positive) or HCV (detectable HCV RNA) infection in Belgium. Patients and methods Data were extracted from two Belgian observational databases. Results A total of 655 patients (387 HBV and 268 HCV) were included. Compared with HCV patients, HBV patients were younger, more frequently men, more often of Asian or African origin (43 vs. 10%, P < 0.0001), and less frequently contaminated by transfusion or intravenous drug use (9 and 6% vs. 34 and 44%, P< 0.0001). Viral replication was assessed in 89% of HBV patients. Compared with HCV patients, HBV patients more frequently had normal alanine aminotransferase (ALT) levels (65 vs. 29%, P < 0.0001), less frequently underwent liver biopsy (29 vs. 67%, P < 0.0001), and were less often considered for antiviral therapy (25 vs. 54%, P < 0.0001). When taking only HBV patients with detectable viral replication into consideration, results remained unchanged. During the multivariate analysis, ALT was a major factor for performing liver biopsy or considering antiviral therapy in both groups. Conclusion HBV and HCV screening policies should be targeted toward immigrants and intravenous drug users, respectively. Guidelines recommending systematic search for viral replication should be reinforced in HBV patients. HBV patients less frequently underwent liver biopsy and were less often considered for antiviral therapy compared with HCV patients. Despite the lack of sensitivity and specificity, ALT remains a pivotal decision-making tool for liver biopsy and antiviral therapy in both infections. [less ▲]

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See detailLa face cachée des intrigues de cour. Prolégomènes à une étude du rôle des femmes royales dans les royaumes hellénistiques
Caneva, Stefano ULg

in Mètis : Revue d’Anthropologie du Monde Grec Ancien : Philologie, Histoire, Archéologie (2013)

Dans mon intervention je me propose de partir des représentations du rôle des femmes dans les récits stéréotypés sur la dégénération des cours hellénistiques pour réfléchir sur les « dessous » politiques ... [more ▼]

Dans mon intervention je me propose de partir des représentations du rôle des femmes dans les récits stéréotypés sur la dégénération des cours hellénistiques pour réfléchir sur les « dessous » politiques (institutionnels et idéologiques) que ces récits ne sont pas à même, ou ne veulent pas, révéler. J’articulerai mon discours suivant quatre mots-clés : complot ; basilissa ; Aphrodite ; euergétisme. Le complot, la première activité qui caractérise les reines hellénistiques dans l’historiographie, dépend en fait souvent de l’incapacité des auteurs grecs de comprendre en sens politique le rôle des femmes dans une tradition, celle de la Macédoine, qui est différente de celle qu’ont développée les poleis de la Grèce péninsulaire. Par conséquent, les intrigues amoureuses dont les reines sont protagonistes peuvent être lues, dans la plupart des cas, comme une ressource narrative topique, employée pour palier à un déficit d’interprétation politique. Pourtant, l’insuffisance du récit historiographique n’est pas toujours un symptôme de naïveté : l’analyse de certains cas spécifiques montre que la topique de la femme qui utilise la séduction pour tramer des complots à l’intérieur de la cour fonctionne parfois comme un instrument de propagande, visant à effacer les vraies motivations politiques des guerres et des conspirations. Mais propagande diffamatoire mise à part, où faut-il chercher les vrais enjeux du rôle politique des reines hellénistiques ? Un premier problème se pose parce que, dans le vocabulaire politique de l’hellénisme, le féminin basilissa n’a pas une fonction équivalente au masculin basileus. Alors que celui-ci renvoie à l’unicité institutionnelle du roi, basilissa peut être la reine, en tant que femme du roi (terme qui se révèle déjà ambigu dans le système de polygamie traditionnelle argéade), aussi bien que d’autres femmes royales, à partir des princesses jusqu’aux hetairai royales. A l’unicité institutionnelle du basileus, s’oppose donc la pluralité, ouverte à plusieurs types de relations familiales, des basilissai. Ce décalage linguistique et politique a notamment des conséquences sur notre compréhension des sources, d’autant plus quand il s’agit de la traduction regina dans l’historiographie romaine sur l’hellénisme. Les reines hellénistiques sont presque toujours associées à Aphrodite. Pourquoi ? Une comparaison entre Theocr. XVII et le dossier épigraphique sur Laodike III montrera les liens entre cette identification avec la déesse de la séduction, évoquant aussi bien la fécondité des nouvelles épouses, et la ratification idéologique d’un modèle de légitimité de la reine à l’intérieur de la cour et de la société. Ce modèle s’appuie sur une relation entre l’ euérgetisme de la reine, c’est à dire son intervention résolutive à la fois dans la vie de la cour et dans les relations politiques avec les poleis et les temples, et la diffusion des cultes en son honneur. Mais, comme pour les rois, l’euergétisme n’a pas seulement un côté idéologique. Les reines hellénistiques peuvent agir comme des bienfaiteurs parce qu’elles peuvent disposer de rentes et d’un certain niveau d’indépendance économique et politique, selon un statut dont les modèles seront à distinguer suivant plusieurs traditions, de celle de la Macédoine à celles de la Perse et de l’Égypte, en passant par des cultures de contact, comme celles qu’a développées l’histoire séculaire des dynasties de l’Asie Mineure. [less ▲]

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See detailCompte-rendu de l'ouvrage d'Adolf Reinach, Phénoménologie réaliste.
Zincq, Aurélien ULg

in Bulletin d'Analyse Phénoménologique (2013), IX(3), 5-8

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See detailHOMOPHOBIE AU PAYS DE L'ONCLE TOM
Sacré, Robert ULg

in ABS Magazine (2013), (38),

Considerations personnelles et developpements consecutifs à la publicaton du dernier livre de Tony HEILBUT : "The Fan who knew too much" ; homosexualité, bisexualite et lesbianisme au sein des églises ... [more ▼]

Considerations personnelles et developpements consecutifs à la publicaton du dernier livre de Tony HEILBUT : "The Fan who knew too much" ; homosexualité, bisexualite et lesbianisme au sein des églises noires et blanches en Amerique, des groupes et solistes de black gospel [less ▲]

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See detailLSP sneutrino decays into heavy standard model pairs
Aristizabal Sierra, Diego ULg; Restrepo, Diego; Spinner, Sogee

in Journal of High Energy Physics [=JHEP] (2013), 1305

In bilinear R-parity violation (BRpV), in which the superpotential includes a bilinear term between the lepton doublet and the up-type Higgs superfields, a sneutrino LSP can decay into pairs of heavy ... [more ▼]

In bilinear R-parity violation (BRpV), in which the superpotential includes a bilinear term between the lepton doublet and the up-type Higgs superfields, a sneutrino LSP can decay into pairs of heavy standard model states: W's, Z's, tops or Higgs bosons. These finals states can dominate over the traditionally considered bottom pair final state. This would lead to unique and novel supersymmetric signals with each supersymmetric event possibly producing two pairs of these heavy standard model fields. We investigate this possibility and find that the branching ratio into heavier states dominates when the bilinear term is much smaller than the sneutrino vacuum expectation value for a given sneutrino flavor. When BRpV is the only source of neutrino masses these decays can only dominate for one of the sneutrino generations. Relaxing this constraint opens these channels for all three generations. [less ▲]

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See detailTransient Fokker-Planck-Kolmogorov equation solved with smoothed particle hydrodynamics method
Canor, Thomas ULg; Denoël, Vincent ULg

in International Journal for Numerical Methods in Engineering (2013), 94(6), 535553

Probabilistic theories aim at describing the properties of systems subjected to random excitations by means of statistical characteristics such as the probability density function (pdf). The time ... [more ▼]

Probabilistic theories aim at describing the properties of systems subjected to random excitations by means of statistical characteristics such as the probability density function (pdf). The time evolution of the pdf of the response of a randomly excited deterministic system is commonly described with the transient Fokker-Planck-Kolmogorov equation (FPK). The FPK equation is a conservation equation of a hypothetical or abstract fluid, which models the transport of probability. This paper presents a generalized formalism for the resolution of the transient FPK equation using the well-known mesh-free Lagrangian method, Smoothed Particle Hydrodynamics (SPH). Numerical implementation shows notable advantages of this method in an unbounded state space: (i) the conservation of total probability in the state space is explicitly written, (ii) no artifact is required to manage far- eld boundary conditions , (iii) the positivity of the pdf is ensured and (iv) the extension to higher dimensions is straightforward. Furthermore, thanks to the moving particles, this method is adapted for a large kind of initial conditions, even slightly dispersed distributions. The FPK equation is solved without any a priori knowledge of the stationary distribution; just a precise representation of the initial distribution is required. [less ▲]

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See detailA NEW SIMPLIFIED ANALYTICAL DESIGN METHOD FOR STEEL AND COMPOSITE SWAY FRAMES
Demonceau, Jean-François ULg; Jaspart, Jean-Pierre ULg

in Journal of Constructional Steel Research (2013)

Eurocode 4 is the European design code for composite construction; in its so-called EN 1994-1-1 version, the design of “non-sway buildings” is mainly covered. As a result, EC4 focuses on the check of ... [more ▼]

Eurocode 4 is the European design code for composite construction; in its so-called EN 1994-1-1 version, the design of “non-sway buildings” is mainly covered. As a result, EC4 focuses on the check of structural elements like beams, columns, slabs and joints. However, in the last years, the construction of taller buildings and larger industrial halls without wind bracing systems tends to make global instability a relevant failure mode, which is not well covered by Eurocode 4. Recently, intensive experimental, numerical and theoretical investigations have been carried out at Liège University. The latter aimed at improving the knowledge in the field of sway composite building frames and at developing appropriate design rules. The rotational behavior of the beam-to-column composite joints is one of the key aspects of the problem to which a special attention has been paid. This paper reflects investigations carried out at Liège University on this topic. In particular, an innovative simplified analytical method to predict the ultimate loading factor and the associated collapse mode of both steel and composite frames subjected to static loadings is presented. [less ▲]

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See detailEvaluation of Fe(III) adsorption onto palygorskite surfaces
Middea, Antonieta; Lima Alves Pinheiro Fernandes, Thais; Neumann, Reiner et al

in Applied Surface Science (2013), 282

In this work, the adsorption of Fe(III) onto Brazilian palygorskite nanoparticles was investigated and the modifications of the mineral–aqueous solution interface properties were evaluated. We also ... [more ▼]

In this work, the adsorption of Fe(III) onto Brazilian palygorskite nanoparticles was investigated and the modifications of the mineral–aqueous solution interface properties were evaluated. We also investigated the influence of the adsorbent concentration and the best contact time for the adsorption to occur. The results showed that an increase in adsorbent dosage also increased the Fe(III) adsorption and the Langmuir model fitted the experimental data, showing that palygorskite is a potential clay mineral for the removal of cations from solutions. [less ▲]

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See detailDevonian miospores from northwestern Gondwana
Breuer, Pierre; Steemans, Philippe ULg

in Special Papers in Palaeontology (2013), 89

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See detailSAHBNET, an Accessible Surface-Based Elastic Network: An Application to Membrane Protein
Dony, Nicolas ULg; Crowet, Jean-Marc ULg; Joris, Bernard ULg et al

in International Journal of Molecular Sciences (2013), 14(6), 11510-26

Molecular Dynamics is a method of choice for membrane simulations and the rising of coarse-grained forcefields has opened the way to longer simulations with reduced calculations times. Here, we present an ... [more ▼]

Molecular Dynamics is a method of choice for membrane simulations and the rising of coarse-grained forcefields has opened the way to longer simulations with reduced calculations times. Here, we present an elastic network, SAHBNET (Surface Accessibility Hydrogen-Bonds elastic NETwork), that will maintain the structure of soluble or membrane proteins based on the hydrogen bonds present in the atomistic structure and the proximity between buried residues. This network is applied on the coarse-grained beads defined by the MARTINI model, and was designed to be more physics-based than a simple elastic network. The SAHBNET model is evaluated against atomistic simulations, and compared with ELNEDYN models. The SAHBNET is then used to simulate two membrane proteins inserted in complex lipid bilayers. These bilayers are formed by self-assembly and the use of a modified version of the GROMACS tool genbox (which is accessible through the gcgs.gembloux.ulg.ac.be website). The results show that SAHBNET keeps the structure close to the atomistic one and is successfully used for the simulation of membrane proteins. [less ▲]

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See detailCharacterization of methicillin-resistant Staphylococcus pseudintermedius isolated from dogs and cats
Bardiau, Marjorie ULg; Yamazaki, Kazuko; Ote, Isabelle et al

in Microbiology and Immunology (2013)

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See detailFirst report of banana mild mosaic virus infecting plantain in Ivory Coast
Kouadio, Kouakou Théodore ULg; Agneroh, Thérèse Atcham; De Clerck, Caroline ULg et al

in Plant Disease (2013), 97(5), 693

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See detailL'herméneutique paranoïaque
Englebert, Jérôme ULg

in Evolution Psychiatrique (2013), 78(2), 267-277

This paper addresses the issue of paranoiac hermeneutic (search for meaning and significance). As any human hermeneutics, this tendency to interpret the world includes a relational dimension as well as a ... [more ▼]

This paper addresses the issue of paranoiac hermeneutic (search for meaning and significance). As any human hermeneutics, this tendency to interpret the world includes a relational dimension as well as a bodily dimension. Three paradigms are proposed by the author to define this hermeneutics: (1) "the hazard does not exist" (2) " a certainty that is yet to be proved" and (3) "the paranoiac is unable to turn to a third party". This theoretical and clinical study also discusses the paranoiac logic in individuals free of mental illness and seeks to determine how a psychological paranoiac functioning will be part of the psychotic register or not. The concepts of "loss of natural evidence" and "pathology of common sense" are those which are used to demonstrate that is in the social and relational dimensions that the problems of the paranoiac lie. The fundamental question regarding the status of reality and knowledge (and of its diffusion) is the dimension that causes the switch to psychosis. The hermeneutics of the relationship is empty for the paranoiac and his "knowledge" no longer meets the social rules which normally turn interpretation into opinion and not into delusion. [less ▲]

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See detailEpreuves isocinétiques de résistance à la fatigue
Croisier, Jean-Louis ULg; Bosquet, L.; Maquet, Didier ULg et al

in Lettre de Médecine Physique et de Réadaptation (2013)

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See detailAstrochemistry: The issue of molecular complexity in astrophysical environments
De Becker, Michaël ULg

in Bulletin de la Société Royale des Sciences de Liège (2013), 83

Astrochemistry aims at studying chemical processes in astronomical environments. This discipline -- located at the crossroad between astrophysics and chemistry -- is rapidly evolving and explores the ... [more ▼]

Astrochemistry aims at studying chemical processes in astronomical environments. This discipline -- located at the crossroad between astrophysics and chemistry -- is rapidly evolving and explores the issue of the formation of molecules of increasing complexity in particular physical conditions that deviate signi - cantly from those frequently encountered in chemistry laboratories. The main goal of this paper is to provide an overview of this discipline. So far, about 170 molecules have been identi ed in the interstellar medium (ISM). The presence of this molecular diversity constitutes a rm evidence that e cient formation processes are at work in the interstellar medium. This paper aims at summarizing most of present ideas that are explored by astrochemists to investigate the chemistry taking place in various astronomical environments, with emphasis on the particular conditions which are met in space (including radiation elds, cosmic-rays, low densities...). The more ambitious question of the molecular complexity is addressed following two approaches presented to be converging. The rst approach considers the growing complexity starting from the most simple chemical species in interstellar environments, and the second approach envisages successive precursors of the most complex species commonly found on Earth, and in particular in our biochemistry. The issue of molecular complexity constitutes one of the main modern scienti c questions addressed by astrochemistry, and it is used as a guideline across this paper. [less ▲]

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See detailL’UE, l’interrégionalisme et les puissances émergentes. Le cas du ‘partenariat’ euro-brésilien
Santander, Sébastian ULg

in Politique Européenne (2013), 39

La contribution revient sur les relations développée avec le Brésil et s'intérroge sur les raisons de ce partenariat, sur les intérêts des parties pour une telle association, sur la manière dont cette ... [more ▼]

La contribution revient sur les relations développée avec le Brésil et s'intérroge sur les raisons de ce partenariat, sur les intérêts des parties pour une telle association, sur la manière dont cette dernière s’articule avec les relations que l’UE entretient avec le Mercosur ainsi que sur les obstacles et les limites qu’elle rencontre. [less ▲]

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See detailAccelerated oxidation test of freeze-dried Pseudomonas fluorescens BTP1, BB2 and PI9 strains.
Mputu Kanyinda, Jean-Noël ULg

in International Journal of Microbiology Research (2013)

Pseudomonas fluorescens strains are very susceptible to damage during freeze-drying and storage. It would be useful to have longer lasting viable powders. Membrane oxidation is one of the factors ... [more ▼]

Pseudomonas fluorescens strains are very susceptible to damage during freeze-drying and storage. It would be useful to have longer lasting viable powders. Membrane oxidation is one of the factors responsible for damages suffered by P. fluorescens strains during storage. Singlet oxygen (1O2) is a highly reactive form of molecular oxygen that may harm living systems by oxidizing critical cellular macromolecules. We exposed freeze-dried powders of three strains P. fluorescens (BB2, BTP1 and PI9) to singlet oxygen produced by photosensitisation of Methylene Blue/ light during 2 hours. We observe a significant loss in survival rate, a pronounced oxidation of polyunsaturated fatty acids, protein oxidation (carbonyl groups) and protein insolubilisation. This study enables better predictions of types of packaging suitable for freeze-dried powders of P. fluorescens. [less ▲]

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See detailStratification du risque cardiovasculaire selon la fonction rénale
Krzesinski, Jean-Marie ULg

in Journal de Cardiologie [= JDC] = Tijdschrift voor Cardiologie [= TVC] (2013), 3

Le risque cardiovasculaire est particulièrement important chez le patient qui a une insuffisance rénale (GFR abaissée et/ou albuminurie présente). Il est souvent sous-estimé en utilisant la table SCORE ... [more ▼]

Le risque cardiovasculaire est particulièrement important chez le patient qui a une insuffisance rénale (GFR abaissée et/ou albuminurie présente). Il est souvent sous-estimé en utilisant la table SCORE par l'agrégation de facteurs de risque traditionnels et non traditionnels quand i y a une IR, à identifier correctement et précocement. La prise en charge de ces facteurs agit sur la prévention à la fois rénale et cardiovasculaire. [less ▲]

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See detailAutour de Holger Meins. Documentaire et lutte armée dans l'entourage de la DFFB après 1969.
Hamers, Jérémy ULg

in Cahiers d'études germaniques (2013), 64(2013/1), 113-129

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See detailTwo new SB2 binaries with main sequence B-type pulsators in the Kepler field
Pápics, P. I.; Tkachenko, A.; Aerts, C. et al

in Astronomy and Astrophysics (2013), 553(127),

Context: OB stars are important in the chemistry and evolution of the Universe, but the sample of targets well understood from an asteroseismological point of view is still too limited to provide feedback ... [more ▼]

Context: OB stars are important in the chemistry and evolution of the Universe, but the sample of targets well understood from an asteroseismological point of view is still too limited to provide feedback on the current evolutionary models. Our study extends this sample with two spectroscopic binary systems. AIMS. Our goal is to provide orbital solutions, fundamental parameters and abundances from disentangled high-resolution high signal-to-noise spectra, as well as to analyse and interpret the variations in the Kepler light curve of these carefully selected targets. This way we continue our efforts to map the instability strips of beta Cep and SPB stars using the combination of high-resolution ground-based spectroscopy and uninterrupted space-based photometry. Methods: We fit Keplerian orbits to radial velocities measured from selected absorption lines of high-resolution spectroscopy using synthetic composite spectra to obtain orbital solutions. We use revised masks to obtain optimal light curves from the original pixel-data from the Kepler satellite, which provided better long term stability compared to the pipeline processed light curves. We use various time-series analysis tools to explore and describe the nature of variations present in the light curve. Results: We find two eccentric double-lined spectroscopic binary systems containing a total of three main sequence B-type stars (and one F-type component) of which at least one in each system exhibits light variations. The light curve analysis (combined with spectroscopy) of the system of two B stars points towards the presence of tidally excited g modes in the primary component. We interpret the variations seen in the second system as classical g mode pulsations driven by the kappa mechanism in the B type primary, and explain the unexpected power in the p mode region as a result of nonlinear resonant mode excitation. [less ▲]

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See detailRôle des oligo-éléments dans la santé du veau
Guyot, Hugues ULg

in Point Vétérinaire (2013), N° spécial(Mai), 24-30

Trace elements (TE) are essential for ruminant health. Numerous deficiencies are seen in Europe that cause diseases mainly in young animals. The main clinically important TE in ruminants are selenium (Se ... [more ▼]

Trace elements (TE) are essential for ruminant health. Numerous deficiencies are seen in Europe that cause diseases mainly in young animals. The main clinically important TE in ruminants are selenium (Se), iodine (I), zinc (Zn) and copper (Cu). They play a role in organogenesis and have most effect on immunity and growth. Placental passage of TE from the dam to the calf occurs, and after calving, Se and I pass via the colostrum/milk. Trace element supplements are essential during gestation for the development of the calf in utero, as well as for the animal’s health and growth after birth. [less ▲]

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See detailAssessing gaps and needs for integrating building performance optimization tools in net zero energy buildings design
Attia, Shady ULg; Hamdy, Mohamed; O’Brien, William et al

in Energy and Buildings (2013), 60

This paper summarizes a study undertaken to reveal potential challenges and opportunities for integrating optimization tools in net zero energy buildings (NZEB) design. The paper reviews current trends in ... [more ▼]

This paper summarizes a study undertaken to reveal potential challenges and opportunities for integrating optimization tools in net zero energy buildings (NZEB) design. The paper reviews current trends in simulation-based building performance optimization (BPO) and outlines major criteria for optimization tools selection and evaluation. This is based on analyzing user's needs for tools capabilities and requirement specifications. The review is carried out by means of a literature review of 165 publications and interviews with 28 optimization experts. The findings are based on an inter-group comparison between experts. The aim is to assess the gaps and needs for integrating BPO tools in NZEB design. The findings indicate a breakthrough in using evolutionary algorithms in solving highly constrained envelope, HVAC and renewable optimization problems. Simple genetic algorithm solved many design and operation problems and allowed measuring the improvement in the optimality of a solution against a base case. Evolutionary algorithms are also easily adapted to enable them to solve a particular optimization problem more effectively. However, existing limitations including model uncertainty, computation time, difficulty of use and steep learning curve. Some future directions anticipated or needed for improvement of current tools are presented. [less ▲]

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See detailLa politique climatique en Belgique. Suivre les évolutions par les bifurcations et les turbulences (1987-2010)
Piet, Grégory ULg

in Carnet de recherche Socio-informatique et argumentation (2013), Logique d'enquête

Ce billet souligne l’intérêt, pour les sciences sociales et politiques, de produire des analyses sur un temps relativement long de dossiers complexes tels que le « changement climatique ». Il montre ... [more ▼]

Ce billet souligne l’intérêt, pour les sciences sociales et politiques, de produire des analyses sur un temps relativement long de dossiers complexes tels que le « changement climatique ». Il montre, d’autre part, comment organiser le suivi de ces dossiers à travers les bifurcations et les turbulences – l’ensemble s’inscrivant dans le suivi de corpus évolutifs, selon une démarche de balistique argumentative (Chateauraynaud, 2011). [less ▲]

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See detailAn essential role for gamma-herpesvirus latency-associated nuclear antigen homolog in an acute lymphoproliferative disease of cattle.
Palmeira, Leonor; Sorel, Océane ULg; Van Campe, Willem et al

in Proceedings of the National Academy of Sciences of the United States of America (2013)

Wildebeests carry asymptomatically alcelaphine herpesvirus 1 (AlHV-1), a gamma-herpesvirus inducing malignant catarrhal fever (MCF) to several ruminant species (including cattle). This acute and lethal ... [more ▼]

Wildebeests carry asymptomatically alcelaphine herpesvirus 1 (AlHV-1), a gamma-herpesvirus inducing malignant catarrhal fever (MCF) to several ruminant species (including cattle). This acute and lethal lymphoproliferative disease occurs after a prolonged asymptomatic incubation period after transmission. Our recent findings with the rabbit model indicated that AlHV-1 infection is not productive during MCF. Here, we investigated whether latency establishment could explain this apparent absence of productive infection and sought to determine its role in MCF pathogenesis. First, whole-genome cellular and viral gene expression analyses were performed in lymph nodes of MCF-developing calves. Whereas a severe disruption in cellular genes was observed, only 10% of the entire AlHV-1 genome was expressed, contrasting with the 45% observed during productive infection in vitro. In vivo, the expressed viral genes included the latency-associated nuclear antigen homolog ORF73 but none of the regions known to be essential for productive infection. Next, genomic conformation analyses revealed that AlHV-1 was essentially episomal, further suggesting that MCF might be the consequence of a latent infection rather than abortive lytic infection. This hypothesis was further supported by the high frequencies of infected CD8+ T cells during MCF using immunodetection of ORF73 protein and single-cell RT-PCR approaches. Finally, the role of latency-associated ORF73 was addressed. A lack of ORF73 did not impair initial virus replication in vivo, but it rendered AlHV-1 unable to induce MCF and persist in vivo and conferred protection against a lethal challenge with a WT virus. Together, these findings suggest that a latent infection is essential for MCF induction. [less ▲]

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See detailConvective drying of wastewater sludge: Introduction of shrinkage effect in mathematical modeling
Bennamoun, Lyes ULg; Crine, Michel ULg; Léonard, Angélique ULg

in Drying Technology (2013), 31(6), 643-654

Drying of two kinds of wastewater sludge was studied. The first part was an experimental work done in a discontinuous cross-flow convective dryer using 1 kg of wet material extruded in 12-mm-diameter ... [more ▼]

Drying of two kinds of wastewater sludge was studied. The first part was an experimental work done in a discontinuous cross-flow convective dryer using 1 kg of wet material extruded in 12-mm-diameter cylinders. The results show the influence of drying air temperature for both sludges. The second part consisted of developing a drying model in order to identify the internal diffusion coefficient and the convective mass transfer coefficient from the experimental data. A comparison between fitted drying curves, well represented by Newton's model, and the analytical solutions of the equation of diffusion, applied to a finite cylinder, was made. Variations in the physical parameters, such as the mass, density, and volume of the dried product, were calculated. This allowed us to confirm that shrinkage, which is an important parameter during wastewater sludge drying, must be taken into account. The results showed that both the internal diffusion coefficient and convective mass transfer coefficient were affected by the air temperature and the origin of the sludge. The values of the diffusion coefficient changed from 42.35 × 10−9 m2 · s−1 at 160°C to 32.49 × 10−9 m2 · s−1 at 122°C for sludge A and from 33.40 × 10−9 m2 · s−1 at 140°C to 28.45 × 10−9 m2 · s−1 at 120°C for sludge B. The convective mass transfer coefficient changed from 4.52 × 10−7 m · s−1 at 158°C to 3.33 × 10−7 m · s−1 at 122°C for sludge A and from 3.44 × 10−7 m · s−1 at 140°C to 2.84 × 10−7 m2 · s−1 at 120°C for sludge B. The temperature dependency of the two coefficients was expressed using an Arrhenius-type equation and related parameters were deduced. Finally, the study showed that neglecting shrinkage phenomena resulted in an overestimation that can attain and exceed 30% for the two coefficients. [less ▲]

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See detailCompost Pile Monitoring Using Different Approaches:GC-MS, E-nose and dynamic olfactometry
Gutierrez, M. C.; Chica, A. F.; Martin, M. A. et al

in Waste and Biomass Valorization (2013)

The evaluation of odour emissions associated to the composting process is complex because these emissions depend on several factors such as the raw material to be composted, the different stages of the ... [more ▼]

The evaluation of odour emissions associated to the composting process is complex because these emissions depend on several factors such as the raw material to be composted, the different stages of the composting process, meteorological conditions, and others. For this reason, the aim of this paper is to compare complementary approaches to monitor odours. The odour source selected for this study is green waste compost at different maturity stages. The study site is a composting facility located in the south of Belgium. The compared approaches were: a portable e-nose developed by the Environmental Monitoring Research team (Arlon, Belgium) to monitor odorous emissions from the composting piles; chemical analyses performed in the laboratory using a GC–MS (manufactured by Thermo) to analyse volatile organic compounds which were collected by active sampling on Tenax TA sorbent simultaneously to the in situ e-nose measurements and olfactometric measurements to determine the odour concentration (ouE/m3) using the Odile olfactometer (Odotech). The portable e-nose was also used in the laboratory with compost odour samples collected in bags. The large numbers of data sets obtained were explored by statistical methods such as principal components analysis. The results obtained highlight the advantages of monitoring the composting process with these three approaches. Each approach gives different information about the composting process and the emissions generated. While the e-nose is capable of identifying some chemical family emissions and some activities such as turning steps, the GC–MS identifies each chemical compound emitted and dynamic olfactometry quantifies the odour concentration (ouE/m3) in relationship with these emissions. [less ▲]

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See detail[70,l+] baryons in large Nc QCD revisited: The effect on Regge trajectories
Matagne, Nicolas; Stancu, Floarea ULg

in Physical Review. D : Particles and Fields (2013), 87(April), 076012

A simple procedure within the 1/N_c expansion method where all the N_c quarks are treated on the same footing has been found successful in describing mixed symmetric negative parity baryon states ... [more ▼]

A simple procedure within the 1/N_c expansion method where all the N_c quarks are treated on the same footing has been found successful in describing mixed symmetric negative parity baryon states belonging to the [{\bf 70},\ell^-] multiplets of the N = 1 and 3 bands. Presently it is applied to mixed symmetric positive parity [{\bf 70},0^+] and [{\bf 70},2^+] multiplets of the N = 2 band. We search for the most dominant terms in the mass formula. The results are compared to those obtained in the procedure where the system is separated into a core and an excited quark. We find that both the spin and isospin operators of the entire system of N_c quarks play dominant roles in describing the data, like for negative parity states. As a by-product we present the contribution of the leading spin-isospin singlet term as a function of the band number, which hints at distinct Regge trajectories for the symmetric and mixed symmetric states. [less ▲]

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See detailAn efficient algorithm to perform multiple testing in epistasis screening
Van Lishout, François ULg; Mahachie John, Jestinah ULg; Gusareva, Elena ULg et al

in BMC Bioinformatics (2013), 14

Background: Research in epistasis or gene-gene interaction detection for human complex traits has grown over the last few years. It has been marked by promising methodological developments, improved ... [more ▼]

Background: Research in epistasis or gene-gene interaction detection for human complex traits has grown over the last few years. It has been marked by promising methodological developments, improved translation efforts of statistical epistasis to biological epistasis and attempts to integrate different omics information sources into the epistasis screening to enhance power. The quest for gene-gene interactions poses severe multiple-testing problems. In this context, the maxT algorithm is one technique to control the false-positive rate. However, the memory needed by this algorithm rises linearly with the amount of hypothesis tests. Gene-gene interaction studies will require a memory proportional to the squared number of SNPs. A genome-wide epistasis search would therefore require terabytes of memory. Hence, cache problems are likely to occur, increasing the computation time. In this work we present a new version of maxT, requiring an amount of memory independent from the number of genetic effects to be investigated. This algorithm was implemented in C++ in our epistasis screening software MBMDR-3.0.3. We evaluate the new implementation in terms of memory efficiency and speed using simulated data. The software is illustrated on real-life data for Crohn's disease. Results: In the case of a binary (affected/unaffected) trait, the parallel workflow of MBMDR-3.0.3 analyzes all gene-gene interactions with a dataset of 100,000 SNPs typed on 1000 individuals within 4 days and 9 hours, using 999 permutations of the trait to assess statistical significance, on a cluster composed of 10 blades, containing each four Quad-Core AMD Opteron Processor 2352 2.1 GHz. In the case of a continuous trait, a similar run takes 9 days. Our program found 14 SNP-SNP interactions with a multiple-testing corrected p-value of less than 0.05 on real-life Crohn's disease data. Conclusions: Our software is the first implementation of the MB-MDR methodology able to solve large-scale SNP-SNP interactions problems within a few days, without using much memory, while adequately controlling the type I error rates. A new implementation to reach genome-wide epistasis screening is under construction. In the context of Crohn's disease, MBMDR-3.0.3 could identify epistasis involving regions that are well known in the field and could be explained from a biological point of view. This demonstrates the power of our software to find relevant phenotype-genotype higher-order associations. [less ▲]

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See detailA Methodology to Improve the Robustness of Gas Turbine Engine Performance Monitoring Against Sensor Faults
Dewallef, Pierre ULg; Borguet, Sébastien ULg

in Journal of Engineering for Gas Turbines and Power (2013), 135(5),

For turbine engine performance monitoring purposes, system identification techniques are often used to adapt a turbine engine simulation model to some measurements performed while the engine is in service ... [more ▼]

For turbine engine performance monitoring purposes, system identification techniques are often used to adapt a turbine engine simulation model to some measurements performed while the engine is in service. Doing so, the simulation model is adapted through a set of so-called health parameters whose values are intended to represent a faithful image of the actual health condition of the engine. For sake of low computational burden, the problem of random errors contaminating the measurements is often considered to be zero-mean, white and Gaussian random variables. However, when a sensor fault occurs, the measurement errors no longer satisfy the Gaussian assumption and the results given by the system identification rapidly become unreliable. The present contribution is dedicated to the development of a diagnosis tool based on a Kalman filter whose structure is slightly modified in order to accommodate sensor malfunctions. The benefit in terms of the diagnostic reliability of the resulting tool is illustrated on several sensor faults that may be encountered on a current turbofan layout. [less ▲]

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See detailSynthesis and pharmacological evaluation of 2-aryloxy/arylamino-5-cyanobenzenesulfonylureas as novel thromboxane A2 receptor antagonists
Bambi-Nyanguile, Sylvie-Mireille; Hanson, Julien ULg; OOMS, Annie ULg et al

in European Journal of Medicinal Chemistry (2013), 65C

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See detailEvapotranspiration amplifies European summer drought
Teuling, Adriaan J.; Van Loon, Anne F.; Seneviratne, Sonia Isabelle et al

in Geophysical Research Letters (2013)

Drought is typically associated with a lack of precipitation, whereas the contribution of evapotranspiration and runoff to drought evolution is not well understood. Here, we use unique long-term ... [more ▼]

Drought is typically associated with a lack of precipitation, whereas the contribution of evapotranspiration and runoff to drought evolution is not well understood. Here, we use unique long-term observations made in four headwater catchments in Central and Western Europe to reconstruct storage anomalies and study the drivers of storage anomaly evolution during drought. We provide observational evidence for the ‘drought-paradox’ in that region: a consistent and significant increase in evapotranspiration during drought episodes which acts to amplify the storage anomalies. In contrast, decreases in runoff act to limit storage anomalies. Our findings stress the need for the correct representation of evapotranspiration and runoff processes in drought indices. [less ▲]

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See detailInfluence of food resources on the ranging pattern of Northern pig-tailed macaques (Macaca leonina)
Albert, Aurelie; Huynen, Marie-Claude ULg; Savini, Tommaso et al

in International Journal of Primatology (2013)

Food availability may influence primates’ home range size and use. Understanding this relationship may facilitate the design of conservation strategies. We aimed to determine how fruit availability ... [more ▼]

Food availability may influence primates’ home range size and use. Understanding this relationship may facilitate the design of conservation strategies. We aimed to determine how fruit availability influences the ranging patterns of a group of northern pig-tailed macaques (Macaca leonina) living around the visitor center of Khao Yai National Park, Thailand. We predicted that macaques would increase their range during low fruit abundance periods to gather high-quality food and that they would go where there are more fruits or more fruits of particular species. We also predicted that human food, linked to human pre sence, would attract the macaques. We followed the macaques and recorded their diet and movements within their home range. We superimposed a grid on kernels defining the monthly home range surface to compare spatially macaques’ travel and the availability of fruits measured on botanical transects. Our results showed that the macaques increased their monthly home range in March, probably to obtain newly available fruits. During high fruit abundance seasons, they spent more time near particular fruit species. In August and September, although fruits became rare again, macaques kept their home range large, perhaps to find enough fruits as supplies dwindled. Finally, from October to February, they decreased their monthly home range size while consuming human food, a highquality item. In conclusion, the macaques used several ranging strategies according to fruit availability. however, we think that, without human food, macaques would tend to increase their range during low fruit abundance periods, as predicted. [less ▲]

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See detailInfluence of food resources on the ranging pattern of Northern pig-tailed macaques (Macaca leonina)
Albert, Aurelie; Huynen, Marie-Claude ULg; Savini, Tommaso et al

in International Journal of Primatology (2013)

Food availability may influence primates’ home range size and use. Understanding this relationship may facilitate the design of conservation strategies. We aimed to determine how fruit availability ... [more ▼]

Food availability may influence primates’ home range size and use. Understanding this relationship may facilitate the design of conservation strategies. We aimed to determine how fruit availability influences the ranging patterns of a group of northern pig-tailed macaques (Macaca leonina) living around the visitor center of Khao Yai National Park, Thailand. We predicted that macaques would increase their range during low fruit abundance periods to gather high-quality food and that they would go where there are more fruits or more fruits of particular species. We also predicted that human food, linked to human pre sence, would attract the macaques. We followed the macaques and recorded their diet and movements within their home range. We superimposed a grid on kernels defining the monthly home range surface to compare spatially macaques’ travel and the availability of fruits measured on botanical transects. Our results showed that the macaques increased their monthly home range in March, probably to obtain newly available fruits. During high fruit abundance seasons, they spent more time near particular fruit species. In August and September, although fruits became rare again, macaques kept their home range large, perhaps to find enough fruits as supplies dwindled. Finally, from October to February, they decreased their monthly home range size while consuming human food, a highquality item. In conclusion, the macaques used several ranging strategies according to fruit availability. however, we think that, without human food, macaques would tend to increase their range during low fruit abundance periods, as predicted. [less ▲]

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See detailOne-pot controlled synthesis of double thermoresponsive N-vinylcaprolactam-based copolymers with tunable LCSTs
Kermagoret, Anthony ULg; Fustin, Charles-André; Bourguignon, Maxime et al

in Polymer Chemistry (2013), 4(8), 2575-2583

N-Vinylcaprolactam (NVCL) was copolymerized statistically for the first time in a controlled manner with hydrophilic N-vinylamide or hydrophobic vinylester monomers in order to precisely tune up and down ... [more ▼]

N-Vinylcaprolactam (NVCL) was copolymerized statistically for the first time in a controlled manner with hydrophilic N-vinylamide or hydrophobic vinylester monomers in order to precisely tune up and down the lower critical solution temperature (LCST) of the resulting copolymers. The incorporation of these segments in complex architectures was also considered. Several narrowly distributed NVCL-based copolymers were prepared by cobalt-mediated radical polymerization (CMRP) using the bis-(acetylacetonato)cobalt(II) complex as a controlling agent and N-methyl-N-vinylacetamide (NMVA), N-vinylacetamide (NVA), vinyl acetate (VAc) or vinyl pivalate (VPi) as comonomers. PNVCL-containing block copolymers having two discrete LCSTs were also synthesized following a one-pot strategy based on the sequential CMRP of NVCL followed by the copolymerization of NMVA with the residual NVCL. Upon gradual heating of aqueous solutions of such double thermoresponsive copolymers, we noticed a transition from free chains to micelles before full dehydration and collapse of the block copolymers. These advances represent a significant step towards the development of a platform based on thermoresponsive PNVCL copolymers with a single phase separation or multistep assembly behaviors. [less ▲]

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See detailHERPES SIMPLEX VIRUS REACTIVATION AND DENTAL PROCEDURES
EL HAYDERI, Lara ULg; DELVENNE, Philippe ULg; ROMPEN, Eric ULg et al

in Clinical Oral Investigations (2013)

Objectives : Dental extraction is reportes to trigger recurrent herpes labialis (RHL). Aim : This aims to prospectively study the clinical occurrence of RHL and the oral herpes simplex virus type 1 (HSV-1 ... [more ▼]

Objectives : Dental extraction is reportes to trigger recurrent herpes labialis (RHL). Aim : This aims to prospectively study the clinical occurrence of RHL and the oral herpes simplex virus type 1 (HSV-1) viral shedding before and 3 days after different dental procedures. Materials and methods : Oral HSV-1 DNA was measured by real-time PCR before and 3 days after dental procedures of the inferior dentition in 57 immunocometent patients (mean age 32.4 years) who were selected and divided into four distinct subgroups (dental inspection without anesthesia, n=14; molar extraction under local anesthesia, n=15; and molar extraction under general anesthesia, n=9) and compared to 32 healthy controls (mean age 33 years). Results : None of the patients suffered from RHL at day 3. Oral HSV-1 DNA was detected before and after procedure in 1.7 % (1/57) and 5.3 % (3/57), respectively [dental inspection without anesthesia, 5.3 % (1/19); molar extraction under local anesthesia, 6.7 % (1/15); and molar extraction under general anesthesia, 11 % (1/9)]. None of the controls presented RHL or detectable oral HSV-1 DNA. There was no statistically significant difference between the study groups and controls. [less ▲]

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See detailLes francophones de Flandre : une communauté ? un avenir ? Enquête sociolinguistique auprès de jeunes francophones gantois
Dassargues, Alix ULg

in FrancoFonie: Revue du Centre d’Étude des Francophones en Flandre / Tijdschrift van het Studiecentrum Franstaligen in Vlaanderen (2013), (4),

Despite the fact that the presence of Francophones in Flanders is a most interesting sociolinguistic case, recent sociolinguistic data of French-speaking communities in Flanders are not available. So, an ... [more ▼]

Despite the fact that the presence of Francophones in Flanders is a most interesting sociolinguistic case, recent sociolinguistic data of French-speaking communities in Flanders are not available. So, an exploratory investigation has been conducted among young French-speaking people from Ghent. Through quantitative and qualitative data, this investigation raises questions about the existence of a linguistic and/or social community gathering French-speaking inhabitants in Flanders and about the uncertain future of French in Flanders. [less ▲]

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See detailL'-band AGPM vector vortex coronagraph's first light on VLT/NACO: Discovery of a late-type companion at two beamwidths from an F0V star
Mawet, D.; Absil, Olivier ULg; Delacroix, Christian ULg et al

in Astronomy and Astrophysics (2013), 552

Context. High contrast imaging has thoroughly combed through the limited search space accessible with first-generation ground-based adaptive optics instruments and the Hubble Space Telescope. Only a few ... [more ▼]

Context. High contrast imaging has thoroughly combed through the limited search space accessible with first-generation ground-based adaptive optics instruments and the Hubble Space Telescope. Only a few objects were discovered, and many non-detections reported and statistically interpreted. The field is now in need of a technological breakthrough. Aim. Our aim is to open a new search space with first-generation systems such as NACO at the Very Large Telescope, by providing ground-breaking inner working angle (IWA) capabilities in the L' band. The L' band is a sweet spot for high contrast coronagraphy since the planet-to-star brightness ratio is favorable, while the Strehl ratio is naturally higher. Methods. An annular groove phase mask (AGPM) vector vortex coronagraph optimized for the L' band, made from diamond subwavelength gratings was manufactured and qualified in the lab. The AGPM enables high contrast imaging at very small IWA, potentially being the key to unexplored discovery space. Results. Here we present the installation and successful on-sky tests of an L'-band AGPM coronagraph on NACO. Using angular differential imaging, which is well suited to the rotational symmetry of the AGPM, we demonstrated a \Delta L' > 7.5 mag contrast from an IWA ~ 0".09 onwards, during average seeing conditions, and for total integration times of a few hundred seconds. [less ▲]

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See detailFécondité des vaches et troupeaux laitiers wallons. Effet du management.
Chapaux, Philippe; Glorieux, Géry; Hanzen, Christian ULg

in Wallonie Elevages (2013), 4

L’intervalle moyen entre vêlages est de 409 jours. Pour les 25 % meilleurs troupeaux (3125 annéesz troupeaux) et vaches (107.700 lactations), il est respectivement de 387 et 346 jours. L’objectif ... [more ▼]

L’intervalle moyen entre vêlages est de 409 jours. Pour les 25 % meilleurs troupeaux (3125 annéesz troupeaux) et vaches (107.700 lactations), il est respectivement de 387 et 346 jours. L’objectif classiquement proposé d’un veau par vache et par an n’est atteint que dans 0,38% des troupeaux et par une vache sur quatre (27%). L’augmentation de la production laitière moyenne s’accompagne d’un allongement de l’intervalle entre vêlages. Des performances de reproduction comprises entre 380 jours pour les élevages dont la production est inférieure à 8000 kg et de 390 jours pour les élevages dont la production est supérieure à 8000 kg de lait sont néanmoins tout à fait possibles. L’impact de l’augmentation du niveau de production sur l’allongement de l’intervalle entre vêlages est limité. Les éleveurs dont les troupeaux ont des moyennes de production égales ou supérieures à 8.000 kg tirent un meilleur parti de l’environnement (effet positif) que ceux dont les troupeaux ont des moyennes de production inférieures à 7.000 Kg. La marge brute par vache augmente avec le niveau de production laitière moyen du troupeau. [less ▲]

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See detailImpact of diffuse light on isoprene and monoterpene emissions from a mixed temperate forest
Laffineur, Quentin ULg; Aubinet, Marc ULg; Schoon, Niels et al

in Atmospheric Environment (2013), 46(74), 385-392

This study investigated the impact of diffuse light on canopy scale emission of isoprene and monoterpenes measured continuously above a mixed temperate forest, using the disjunct eddy-covariance by mass ... [more ▼]

This study investigated the impact of diffuse light on canopy scale emission of isoprene and monoterpenes measured continuously above a mixed temperate forest, using the disjunct eddy-covariance by mass scanning technique with a proton transfer reaction-mass spectrometer (PTR-MS) instrument. To assess this impact, the relationship between emissions/radiation and emissions/gross primary production (GPP) under clear sky and cloudy conditions were analysed. Under cloudy conditions (high proportion of diffuse radiation), the isoprene and monoterpene fluxes were enhanced compared to clear sky conditions (low proportion of diffuse radiation) at equivalent temperature and above-canopy total radiation. The whole-canopy enzymatic activity of the metabolic isoprene production pathway, however, was suggested to be lower under cloudy conditions than under clear sky conditions at equivalent temperature. The mechanisms behind these observations are probably linked to the better penetration of diffuse radiation in the canopy. Shade leaves/needles receive more radiation in cloudy conditions than in clear sky conditions, thereby inducing the observed effects. [less ▲]

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See detailParametric study of metal/polymer multilayer coatings for temperature wrinkling prediction
Zhang, Lihong ULg; Habraken, Anne ULg; Ben Bettaieb, Amine ULg et al

in Journal of Materials Engineering & Performance (2013), 22(9), 2437-2445

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See detailThe histamine H3-receptor inverse agonist Pitolisant improves fear memory in mice
Brabant, Christian ULg; Charlier, Yana ULg; Tirelli, Ezio ULg

in Behavioural Brain Research (2013), 243

Numerous studies have demonstrated that brain histamine plays a crucial role in learning and memory and histamine H3 receptor inverse agonists (H3R inverse agonists) have been proposed to treat cognitive ... [more ▼]

Numerous studies have demonstrated that brain histamine plays a crucial role in learning and memory and histamine H3 receptor inverse agonists (H3R inverse agonists) have been proposed to treat cognitive disorders. Pitolisant (BF2.649, 1-{3-[3-(4-chlorophenyl)propoxy]propyl}piperidine, hydrochloride) was the first H3R inverse agonist that has been tested in human trials and is well tolerated. The present study investigated whether Pitolisant (0.625–20 mg/kg, i.p.) improves consolidation and reconsolidation processes in the fear conditioning task in female C57BL/6J mice. We also tested whether Pitolisant reverses memory deficits induced by the non-competitive N-methyl-d-aspartate (NMDA) antagonist dizocilpine (MK-801). Our results indicate that post-training systemic injections of Pitolisant facilitated consolidation of contextual fear memory and reversed amnesia induced by an i.p. injection of 0.12 mg/kg dizocilpine. In addition, none of the doses of Pitolisant we have tested after reactivation (reexposure to the context in which training took place 48 h earlier) affected reconsolidation, whereas dizocilpine disrupted it. However, Pitolisant was able to reverse the deficit in reconsolidation induced by 0.12 mg/kg dizocilpine. The present results are the first demonstration that Pitolisant is effective in improving consolidation processes in the fear condition task and add further evidence to its potential for treating cognitive disorders. [less ▲]

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See detailDual anticancer drug/superparamagnetic iron oxide-loaded PLGA-based nanoparticles for cancer therapy and magnetic resonance imaging
Schleich, N.; Sibret, Pierre ULg; Danhier, P. et al

in International Journal of Pharmaceutics (2013), 447(1-2), 94-101

We developed dual paclitaxel (PTX)/superparamagnetic iron oxide (SPIO)-loaded PLGA-based nanoparticles for a theranostic purpose. Nanoparticles presented a spherical morphology and a size of 240 nm. The ... [more ▼]

We developed dual paclitaxel (PTX)/superparamagnetic iron oxide (SPIO)-loaded PLGA-based nanoparticles for a theranostic purpose. Nanoparticles presented a spherical morphology and a size of 240 nm. The PTX and iron loading were 1.84 ± 0.4 and 10.4 ± 1.93 mg/100 mg respectively. Relaxometry studies and phantom MRI demonstrated their efficacy as T2 contrast agent. Significant cellular uptake by CT26 cells of nanoparticles was shown by Prussian blue staining and fluorescent microscopy. While SPIO did not show any toxicity in CT-26 cells, PTX-loaded nanoparticles had a cytotoxic activity. PTX-loaded nanoparticle (5 mg/kg) with or without co-encapulated SPIO induced in vivo a regrowth delay of CT26 tumors. Together these multifunctional nanoparticles may be considered as future nanomedicine for simultaneous molecular imaging, drug delivery and real-time monitoring of therapeutic response. [less ▲]

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See detailIn situ nitroxide-mediated polymerization of styrene promoted by the N-tert-butyl-alpha-isopropylnitrone/BPO pair: ESR investigations
Detrembleur, Christophe ULg; Clément, Jean-Louis; Sciannaméa, Valérie et al

in Journal of Polymer Science. Part A, Polymer Chemistry (2013), 51(8), 1786-1795

The styrene polymerization initiated by benzoyl peroxide (BPO) in the presence of N-tert-butyl--isopropylnitrone as nitroxide precursor is well-controlled provided that a prereaction between the nitrone ... [more ▼]

The styrene polymerization initiated by benzoyl peroxide (BPO) in the presence of N-tert-butyl--isopropylnitrone as nitroxide precursor is well-controlled provided that a prereaction between the nitrone and BPO is carried out in suitable conditions prior to polymerization at a higher temperature. Electron spin resonance (ESR) spectroscopy was implemented to probe the nitroxides formed during both steps, that is, the prereaction and polymerization, and to get crucial information regarding the structure of the nitroxides responsible for the polymerization control. ESR studies combined with first principles calculations have evidenced that nitroxides observed during the prereaction in the presence of styrene and during the polymerization steps consist of a mixture of two macronitroxides. One is formed by the addition of a growing polystyrene chain to the nitrone as would be expected. However, the second one results from the addition of a polystyrene chain to tert-butyl nitroso that is in situ formed presumably by decomposition of the first macronitroxide type. [less ▲]

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See detailBrain dead yet mind alive: A positron emission tomography case study of brain metabolism in Cotard’s syndrome
Charland-Verville, Vanessa ULg; Bruno, Marie-Aurélie ULg; Bahri, Mohamed Ali ULg et al

in Cortex : A Journal Devoted to the Study of the Nervous System & Behavior (2013), 49(7), 1997-1999

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See detailRelationship between the Synthesis of Prussian Blue Pigments, Their Color, Physical Properties, and Their Behavior in Paint Layers
Samain, Louise ULg; Grandjean, Fernande ULg; Long, Gary J. et al

in Journal of Physical Chemistry C (2013), 117(19), 96939712

Prussian blue pigments, highly insoluble mixed-valence iron(III) hexacyanoferrate(II) complexes of typical stoichiometry Fe4III[FeII(CN)6]3·xH2O or KFeIII[FeII(CN)6]·xH2O, have been used as pigments in ... [more ▼]

Prussian blue pigments, highly insoluble mixed-valence iron(III) hexacyanoferrate(II) complexes of typical stoichiometry Fe4III[FeII(CN)6]3·xH2O or KFeIII[FeII(CN)6]·xH2O, have been used as pigments in oil paintings and watercolors for 300 years. For poorly understood reasons, these pigments often fade with time. Although the preparation methods have been recognized since the mid-eighteenth century as a contributory factor in the fading of the pigment, the spectral and physical properties of Prussian blue that vary with the type of synthesis were not precisely identified. Several Prussian blue pigments have been prepared by different methods and characterized by thermogravimetric analyses, high-energy powder X-ray diffraction, atomic absorption and flame emission, UV–visible, iron-57 Mössbauer, iron K-edge X-ray absorption, and Raman spectroscopy. The type of synthesis influences the hue, tinting strength, and hiding power properties of the Prussian blue pigments. Two major features appear to be strongly dependent on the preparative methods, the particle size and the local disorder. Both a nitrogen atmosphere and an intermediate aging step of the Berlin white, Fe2II[FeII(CN)6], during the synthesis are required to obtain a highly colored pigment through the optimization of particle size, minimization in the perturbations to the FeII–CN–FeIII intervalence electron transfer pathway, and the minimization of disordered vacancies. The potassium containing Prussian blue structure has been revisited. It can be described with the Pm3m space group, where approximately one-quarter of the [FeII(CN)6]4– sites are vacant and where the potassium cation is located at a zeolitic-like position inside the lattice cavities. The degree of ordering of the [FeII(CN)6]4– vacancies in all Prussian blues was quantified using atomic pair distribution analysis, an ordering that is consistent with the iron K-edge X-ray absorption spectra. The presence of strain in the crystals is observed by both powder X-ray diffraction and Mössbauer spectroscopy. The structural similarity between the alkali-free, improperly referred to as “insoluble”, and the alkali containing, “soluble”, Prussian blues may explain why the two varieties are almost undistinguishable by spectroscopic techniques. [less ▲]

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See detailThe future sea-level rise contribution of Greenland's glaciers and ice caps
Machguth, H.; Rastner, P.; Bolch, T. et al

in Environmental Research Letters (2013), 8(025005), 14

We calculate the future sea-level rise contribution from the surface mass balance of all of Greenland's glaciers and ice caps (GICs, ~90 000 km2) using a simplified energy balance model which is driven by ... [more ▼]

We calculate the future sea-level rise contribution from the surface mass balance of all of Greenland's glaciers and ice caps (GICs, ~90 000 km2) using a simplified energy balance model which is driven by three future climate scenarios from the regional climate models HIRHAM5, RACMO2 and MAR. Glacier extent and surface elevation are modified during the mass balance model runs according to a glacier retreat parameterization. Mass balance and glacier surface change are both calculated on a 250 m resolution digital elevation model yielding a high level of detail and ensuring that important feedback mechanisms are considered. The mass loss of all GICs by 2098 is calculated to be 2016 ± 129 Gt (HIRHAM5 forcing), 2584 ± 109 Gt (RACMO2) and 3907 ± 108 Gt (MAR). This corresponds to a total contribution to sea-level rise of 5.8 ± 0.4, 7.4 ± 0.3 and 11.2 ± 0.3 mm, respectively. Sensitivity experiments suggest that mass loss could be higher by 20–30% if a strong lowering of the surface albedo were to take place in the future. It is shown that the sea-level rise contribution from the north-easterly regions of Greenland is reduced by increasing precipitation while mass loss in the southern half of Greenland is dominated by steadily decreasing summer mass balances. In addition we observe glaciers in the north-eastern part of Greenland changing their characteristics towards greater activity and mass turnover. [less ▲]

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See detailOccupational activity and cognitive reserve: implications in terms of prevention of cognitive aging and Alzheimer’s disease
Adam, Stéphane ULg; Bonsang, Eric; Grotz, Catherine ULg et al

in Clinical Interventions in Aging (2013), 8

This paper investigates the relationship between the concept of activity (including both professional and nonprofessional) and cognitive functioning among older European individuals. In this research, we ... [more ▼]

This paper investigates the relationship between the concept of activity (including both professional and nonprofessional) and cognitive functioning among older European individuals. In this research, we used data collected during the first wave of SHARE (Survey on Health, Ageing and Retirement in Europe), and a measurement approach known as stochastic frontier analysis, derived from the economic literature. SHARE includes a large population (n . 25,000) geographically distributed across Europe, and analyzes several dimensions simultaneously, including physical and mental health activity. The main advantages of stochastic frontier analysis are that it allows estimation of parametric function relating cognitive scores and driving factors at the boundary and disentangles frontier noise and distance to frontier components, as well as testing the effect of potential factors on these distances simultaneously. The analysis reveals that all activities are positively related to cognitive functioning in elderly people. Our results are discussed in terms of prevention of cognitive aging and Alzheimer’s disease, and regarding the potential impact that some retirement programs might have on cognitive functioning in individuals across Europe. [less ▲]

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See detailMeasurements of hydrogen cyanide (HCN) and acetylene (C2H2) from the Infrared Atmospheric Sounding Interferometer (IASI)
Duflot, V.; Hurtmans, D.; Clarisse, L. et al

in Atmospheric Measurement Techniques (2013), 6

Hydrogen cyanide (HCN) and acetylene (C2H2) are ubiquitous atmospheric trace gases with medium lifetime, which are frequently used as indicators of combustion sources and as tracers for atmospheric ... [more ▼]

Hydrogen cyanide (HCN) and acetylene (C2H2) are ubiquitous atmospheric trace gases with medium lifetime, which are frequently used as indicators of combustion sources and as tracers for atmospheric transport and chemistry. Because of their weak infrared absorption, overlapped by the CO2 Q branch near 720 cm−1, nadir sounders have up to now failed to measure these gases routinely. Taking into account CO2 line mixing, we provide for the first time extensive measurements of HCN and C2H2 total columns at Reunion Island (21° S, 55° E) and Jungfraujoch (46° N, 8° E) in 2009–2010 using observations from the Infrared Atmospheric Sounding Interferometer (IASI). A first order comparison with local ground-based Fourier transform InfraRed (FTIR) measurements has been carried out allowing tests of seasonal consistency which is reasonably captured, except for HCN at Jungfraujoch. The IASI data shows a greater tendency to high C2H2 values. We also examine a nonspecific biomass burning plume over austral Africa and show that the emission ratios with respect to CO agree with previously reported values. [less ▲]

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See detailEvidence and analysis of 2012 Greenland records from spaceborne observations, a regional climate model and reanalysis data
Tedesco, M.; Fettweis, Xavier ULg; Mote, T. et al

in Cryosphere (The) (2013), 7

A combined analysis of remote sensing observations, regional climate model (RCM) outputs and reanalysis data over the Greenland ice sheet provides evidence that multiple records were set during summer ... [more ▼]

A combined analysis of remote sensing observations, regional climate model (RCM) outputs and reanalysis data over the Greenland ice sheet provides evidence that multiple records were set during summer 2012. Melt extent was the largest in the satellite era (extending up to ∼97% of the ice sheet) and melting lasted up to ∼2 months longer than the 1979–2011 mean. Model results indicate that near surface temperature was ∼3 standard deviations (σ) above the 1958–2011 mean, while surface mass balance (SMB) was ∼3σ below the mean and runoff was 3.9σ above the mean over the same period. Albedo, exposure of bare ice and surface mass balance also set new records, as did the total mass balance with summer and annual mass changes of, respectively, −627 Gt and −574 Gt, 2σ below the 2003–2012 mean. We identify persistent anticyclonic conditions over Greenland associated with anomalies in the North Atlantic Oscillation (NAO), changes in surface conditions (e.g., albedo, surface temperature) and preconditioning of surface properties from recent extreme melting as major driving mechanisms for the 2012 records. Less positive if not increasingly negative SMB will likely occur should these characteristics persist. [less ▲]

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See detailSurface mass balance model intercomparison for the Greenland ice sheet
Vernon, C.L.; Bamber, J.L.; Box, J.E. et al

in Cryosphere (The) (2013), 7

A number of high resolution reconstructions of the surface mass balance (SMB) of the Greenland ice sheet (GrIS) have been produced using global re-analyses data extending back to 1958. These ... [more ▼]

A number of high resolution reconstructions of the surface mass balance (SMB) of the Greenland ice sheet (GrIS) have been produced using global re-analyses data extending back to 1958. These reconstructions have been used in a variety of applications but little is known about their consistency with each other and the impact of the downscaling method on the result. Here, we compare four reconstructions for the period 1960–2008 to assess the consistency in regional, seasonal and integrated SMB components. Total SMB estimates for the GrIS are in agreement within 34% of the four model average when a common ice sheet mask is used. When models' native land/ice/sea masks are used this spread increases to 57%. Variation in the spread of components of SMB from their mean: runoff 42% (29% native masks), precipitation 20% (24% native masks), melt 38% (74% native masks), refreeze 83% (142% native masks) show, with the exception of refreeze, a similar level of agreement once a common mask is used. Previously noted differences in the models' estimates are partially explained by ice sheet mask differences. Regionally there is less agreement, suggesting spatially compensating errors improve the integrated estimates. Modelled SMB estimates are compared with in situ observations from the accumulation and ablation areas. Agreement is higher in the accumulation area than the ablation area suggesting relatively high uncertainty in the estimation of ablation processes. Since the mid-1990s each model estimates a decreasing annual SMB. A similar period of decreasing SMB is also estimated for the period 1960–1972. The earlier decrease is due to reduced precipitation with runoff remaining unchanged, however, the recent decrease is associated with increased precipitation, now more than compensated for by increased melt driven runoff. Additionally, in three of the four models the equilibrium line altitude has risen since the mid-1990s, reducing the accumulation area at a rate of approximately 60 000 km2 per decade due to increased melting. Improving process representation requires further study but the use of a single accurate ice sheet mask is a logical way to reduce uncertainty among models. [less ▲]

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See detailAdult Mesenchymal Stem Cells, Adult Neural Crest Stem Cells and Therapy of Neurological Pathologies: a State of Play
Neirinckx, Virginie ULg; Coste, Cécile ULg; Rogister, Bernard ULg et al

in Stem Cells Translational Medicine (2013), 2(4), 284-296

Adult stem cells are endowed with in vitro multi-lineage differentiation abilities, and constitute an attractive autologous source of material for cell therapy in neurological disorders. With regards to ... [more ▼]

Adult stem cells are endowed with in vitro multi-lineage differentiation abilities, and constitute an attractive autologous source of material for cell therapy in neurological disorders. With regards to lately published results, the ability of adult mesenchymal stem cells (MSC) and neural crest stem cells (NCSC) to integrate and differentiate into neurons once inside the central nervous system (CNS) is currently questioned. In this review, we collected exhaustive data on MSC/NCSC neural differentiation in vitro. We then analyzed pre-clinical cell therapy experiments in different models for neurological diseases and concluded that neural differentiation is probably not the leading property of adult MSC and NCSC concerning neurological pathologies management. Definitely, a fine analysis of the molecules that are secreted by MSC and NCSC would be of significant interest regarding their important contribution to the clinical and pathological recovery after CNS lesions. [less ▲]

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See detailTesting Convective-core Overshooting Using Period Spacings of Dipole Modes in Red Giants
Montalbán, J.; Miglio, A.; Noels-Grötsch, Arlette ULg et al

in Astrophysical Journal (2013), 766

Uncertainties on central mixing in main-sequence (MS) and core He-burning (He-B) phases affect key predictions of stellar evolution such as late evolutionary phases, chemical enrichment, ages, etc. We ... [more ▼]

Uncertainties on central mixing in main-sequence (MS) and core He-burning (He-B) phases affect key predictions of stellar evolution such as late evolutionary phases, chemical enrichment, ages, etc. We propose a test of the extension of extra-mixing in two relevant evolutionary phases based on period spacing (ΔP) of solar-like oscillating giants. From stellar models and their corresponding adiabatic frequencies (respectively, computed with ATON and LOSC codes), we provide the first predictions of the observable ΔP for stars in the red giant branch and in the red clump (RC). We find (1) a clear correlation between ΔP and the mass of the helium core (M [SUB]He[/SUB]); the latter in intermediate-mass stars depends on the MS overshooting, and hence it can be used to set constraints on extra-mixing during MS when coupled with chemical composition; and (2) a linear dependence of the average value of the asymptotic period spacing (langΔPrang[SUB] a [/SUB]) on the size of the convective core during the He-B phase. A first comparison with the inferred asymptotic period spacing for Kepler RC stars also suggests the need for extra-mixing during this phase, as evinced from other observational facts. [less ▲]

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See detailWASP-64b and WASP-72b: two new transiting highly irradiated giant planets
Gillon, Michaël ULg; Anderson, D. R.; Collier-Cameron, A. et al

in Astronomy and Astrophysics (2013), 552

We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 ± 0.068 MJup) and larger (1.271 ± 0.039 RJup) than Jupiter, and is ... [more ▼]

We report the discovery by the WASP transit survey of two new highly irradiated giant planets. WASP-64 b is slightly more massive (1.271 ± 0.068 MJup) and larger (1.271 ± 0.039 RJup) than Jupiter, and is in very-short (a = 0.02648 ± 0.00024 AU, P = 1.5732918 ± 0.0000015 days) circular orbit around a V = 12.3 G7-type dwarf (1.004 ± 0.028 Msun, 1.058 ± 0.025 Rsun, Teff = 5500 ± 150 K). Its size is typical of hot Jupiters with similar masses. WASP-72 b has also a mass a bit higher than Jupiter's (1.461-0.056+0.059 MJup) and orbits very close (0.03708 ± 0.00050 AU, P = 2.2167421 ± 0.0000081 days) to a bright (V = 9.6) and moderately evolved F7-type star (1.386 ± 0.055 Msun, 1.98 ± 0.24 Rsun, Teff = 6250 ± 100 K). Despite its extreme irradiation (~5.5 × 109 erg s-1 cm-2), WASP-72 b has a moderate size (1.27 ± 0.20 RJup) that could suggest a significant enrichment in heavy elements. Nevertheless, the errors on its physical parameters are still too high to draw any strong inference on its internal structure or its possible peculiarity. [less ▲]

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See detailA massive parsec-scale dust ring nebula around the yellow hypergiant Hen 3-1379
Hutsemekers, Damien ULg; Cox, N. L. J.; Vamvatira-Nakou, Chloi ULg

in Astronomy and Astrophysics (2013), 552

On the basis of far-infrared images obtained by the Herschel Space Observatory, we report the discovery of a large and massive dust shell around the yellow hypergiant Hen 3-1379. The nebula appears as a ... [more ▼]

On the basis of far-infrared images obtained by the Herschel Space Observatory, we report the discovery of a large and massive dust shell around the yellow hypergiant Hen 3-1379. The nebula appears as a detached ring of 1 pc diameter which contains 0.17 M[SUB]&sun;[/SUB] of dust. We estimate the total gas mass to be 7 M[SUB]&sun;[/SUB], ejected some 1.6 × 10[SUP]4[/SUP] years ago. The ring nebula is very similar to nebulae found around luminous blue variables (LBVs) except it is not photoionized. We argued that Hen 3-1379 is in a pre-LBV stage, providing direct evidence that massive LBV ring nebulae can be ejected during the red supergiant phase. [less ▲]

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See detailThermal emission at 3.6-8 micron from WASP-19b: a hot Jupiter without a stratosphere orbiting an active star
Anderson, D. R.; Smith, A. M. S.; Madhusudhan, N. et al

in Monthly Notices of the Royal Astronomical Society (2013), 430(4), 3422-3431

We report detection of thermal emission from the exoplanet WASP-19b at 3.6, 4.5, 5.8 and 8.0 μm. We used the InfraRed Array Camera on the Spitzer Space Telescope to observe two occultations of WASP-19b by ... [more ▼]

We report detection of thermal emission from the exoplanet WASP-19b at 3.6, 4.5, 5.8 and 8.0 μm. We used the InfraRed Array Camera on the Spitzer Space Telescope to observe two occultations of WASP-19b by its host star. We combine our new detections with previous measurements of WASP-19b's emission at 1.6 and 2.09 μm to construct a spectral energy distribution of the planet's dayside atmosphere. By comparing this with model-atmosphere spectra, we find that the dayside atmosphere of WASP-19b lacks a strong temperature inversion. As WASP-19 is an active star (log R'HK = -4.50 ± 0.03), this finding supports the hypothesis of Knutson, Howard and Isaacson that inversions are suppressed in hot Jupiters orbiting active stars. The available data are unable to differentiate between a carbon-rich and an oxygen-rich atmosphere. [less ▲]

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See detailAbundance study of the two solar-analogue CoRoT targets HD 42618 and HD 43587 from HARPS spectroscopy
Morel, Thierry ULg; Rainer, M.; Poretti, E. et al

in Astronomy and Astrophysics (2013), 552

We present a detailed abundance study based on spectroscopic data obtained with HARPS of two solar-analogue main targets for the asteroseismology programme of the CoRoT satellite: HD 42618 and HD 43587 ... [more ▼]

We present a detailed abundance study based on spectroscopic data obtained with HARPS of two solar-analogue main targets for the asteroseismology programme of the CoRoT satellite: HD 42618 and HD 43587. The atmospheric parameters and chemical composition are accurately determined through a fully differential analysis with respect to the Sun observed with the same instrumental set-up. Several sources of systematic errors largely cancel out with this approach, which allows us to narrow down the 1-σ error bars to typically 20 K in effective temperature, 0.04 dex in surface gravity, and less than 0.05 dex in the elemental abundances. Although HD 42618 fulfils many requirements for being classified as a solar twin, its slight deficiency in metals and its possibly younger age indicate that, strictly speaking, it does not belong to this class of objects. On the other hand, HD 43587 is slightly more massive and evolved. In addition, marked differences are found in the amount of lithium present in the photospheres of these two stars, which might reveal different mixing properties in their interiors. These results will put tight constraints on the forthcoming theoretical modelling of their solar-like oscillations and contribute to increase our knowledge of the fundamental parameters and internal structure of stars similar to our Sun. Based on observations collected at the La Silla Observatory, ESO (Chile) with the HARPS spectrograph at the 3.6-m telescope, under programme LP185.D-0056.Tables 1 and 2 are available in electronic form at <A href="http://www.aanda.org">http://www.aanda.org</A> [less ▲]

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See detailAn XMM-Newton view of the M 17 nebula
Mernier, François ULg; Rauw, Grégor ULg

in New Astronomy (2013), 20

We present the analysis of an XMM-Newton observation of the M 17 nebula. The X-ray point source population consists of massive O-type stars and a population of probable low-mass pre-main sequence stars ... [more ▼]

We present the analysis of an XMM-Newton observation of the M 17 nebula. The X-ray point source population consists of massive O-type stars and a population of probable low-mass pre-main sequence stars. CEN 1a,b and OI 352, the X-ray brightest O-type stars in M 17, display hard spectra (kT of 3.8 and 2.6 keV) consistent with a colliding wind origin in binary/multiple systems. We show that the strong interstellar reddening towards the O-type stars of M 17 yields huge uncertainties on their L[SUB]X[/SUB]/L[SUB]bol[/SUB] values. The low-mass pre-main sequence stars exhibit hard spectra resulting from a combination of high plasma temperatures and very large interstellar absorption. We find evidence for considerable long term (months to years) variability of these sources. M 17 is one of the few star formation complexes in our Galaxy producing diffuse X-ray emission. We analyze the spectrum of this emission and compare it with previous studies. Finally, we discuss the Optical Monitor UV data obtained simultaneously with the X-ray images. We find very little correspondence between the UV and X-ray sources, indicating that the majority of the UV sources are foreground stars, whilst the bulk of the X-ray sources are deeply embedded in the M 17 complex. [less ▲]

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See detailA giant planet beyond the snow line in microlensing event OGLE-2011-BLG-0251
Kains, N.; Street, R. A.; Choi, J.-Y. et al

in Astronomy and Astrophysics (2013), 552

<BR /> Aims: We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing ... [more ▼]

<BR /> Aims: We present the analysis of the gravitational microlensing event OGLE-2011-BLG-0251. This anomalous event was observed by several survey and follow-up collaborations conducting microlensing observations towards the Galactic bulge. <BR /> Methods: Based on detailed modelling of the observed light curve, we find that the lens is composed of two masses with a mass ratio q = 1.9 × 10[SUP]-3[/SUP]. Thanks to our detection of higher-order effects on the light curve due to the Earth's orbital motion and the finite size of source, we are able to measure the mass and distance to the lens unambiguously. <BR /> Results: We find that the lens is made up of a planet of mass 0.53 ± 0.21 M[SUB]J[/SUB] orbiting an M dwarf host star with a mass of 0.26 ± 0.11 M[SUB]⊙[/SUB]. The planetary system is located at a distance of 2.57 ± 0.61 kpc towards the Galactic centre. The projected separation of the planet from its host star is d = 1.408 ± 0.019, in units of the Einstein radius, which corresponds to 2.72 ± 0.75 AU in physical units. We also identified a competitive model with similar planet and host star masses, but with a smaller orbital radius of 1.50 ± 0.50 AU. The planet is therefore located beyond the snow line of its host star, which we estimate to be around ~1-1.5 AU. [less ▲]

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See detailQuelques éléments en faveur d’une réflexion psychopathologique sur la psychopathie : seconde partie
Englebert, Jérôme ULg

in Annales Médico-Psychologiques (2013), 171(3), 147-153

Objectives: The objectives of this study are to offer some clinical and semiological considerations for a psychopathological conception of psychopathy. In the first part the author provides a history of ... [more ▼]

Objectives: The objectives of this study are to offer some clinical and semiological considerations for a psychopathological conception of psychopathy. In the first part the author provides a history of this diagnosis (see Introduction of this paper) and a description of the current trends in the international literature: the contributions of R.D. Hare and the PCL-R, D.J. Cooke and the Comprehensive Assessment of Psychopathic Personality (CAPP) and T.H. Pham for French-speaking validations (subtitle 2 of this paper). After that, the author proposes a definition of psychopathology in the sense of Minkowski and Jaspers proposals (i.e. these latter come from the principles of the continental phenomenology) (subtitle 3 of this paper). Patients and methods : This theoretical essay is improved by clinical situations. The psychopaths were interviewed in prison or in forensic centers. The method used was a psychopathological analysis from the clinical material , as well as references to the phenomenological psychopathology (continental phenomenology) and the philosophy of J.-P. Sartre, M. Foucault and P. Ricoeur. Results: This study shows that it is useful to consider a psychopathological reflection on psychopathy and this approach gives a framework for the clinical investigations. Regarding that, the author proposes a first comparison between the binswangerian conception of mania and the psychopathic functioning (subtitle 4 of this paper). By this way, we can understand why many studies show a positive correlation between the scoring in the PCL-R and the scale of the MMPI mania. The behavior is similar but the difference is about the dialectic between the “ego” and the “alter ego”. The maniac has a fundamental crisis of the “ego”, which the psychopath does not have. A second finding of our investigations concerns emotions and the dimension of the adaptive psychopathic disorder (subtitle 5 of this paper). An epistemological discussion of the concept of emotions allows us to say that the psychopath is competent in the management of emotional stimuli, which confers a psychological advantage to him. In addition, fundamental research on the management of the emotional stimuli in the psychopath seems to confirm our hypothesis of an adaptive dimension for the psychopathic disorder. The last point we discuss is about “morality” and “ethics” for the psychopath (these notions are from the concepts of empathy and sympathy). On the basis of Foucault's distinction between these two concepts, it becomes possible to study these dimensions and integrate them in the practice of psychopathology. This proposal enables to introduce the concept of narrativity. This observation prompts the clinician to listen to the patient and to pay attention to how he has to tell himself. Conclusions: Our contribution shows that it is possible to conduct a study about the psychopathology of psychopathy. Our study is not intended to be complete and irrefutable. Our goal is rather to give some evidence for a psychopathological consideration on psychopathy (as indicated by the title of this paper). Finally, we offered some thoughts on the practice of psychotherapy by integrating the adaptive dimension of this disorder which, when it is missed, can lead to a psychotherapeutic stalemate. [less ▲]

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See detailBilan des pratiques de veille stratégique au sein des PME wallonnes
Gretry, Anaïs ULg; Brandt, Céline ULg; Delcourt, Cécile ULg

in Revue Française du Marketing (2013)

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See detailLa biographie des diplomates en Belgique : genre mineur ou déclencheur ?
Genin, Vincent ULg

in Bulletin de l'Association belge d'histoire contemporaine (2013), 1

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See detailA fast and facile synthetic route toward the preparation of nanoparticles of polythiophene and its derivatives
Bozukova, Dimitriya; Jérôme, Robert ULg; Jérôme, Christine ULg

in Journal of Nanoparticle Research (2013), 15(4), 15831-18

A novel photochemical water-based approach for the preparation of nanoparticles of polymerized thiophene (Th), thiophene methanol (ThM), or their mixtures (Th-co/or-ThM) was developed. The influence of 3 ... [more ▼]

A novel photochemical water-based approach for the preparation of nanoparticles of polymerized thiophene (Th), thiophene methanol (ThM), or their mixtures (Th-co/or-ThM) was developed. The influence of 3-[(2-acryloyloxy)methyl] thiophene (ATh) as cross-link agent on the stability of the nanoparticles and on their performances was investigated. The occurrence of a polymerization process was confirmed by Fourier transform infrared (FT-IR), UV and fluorescence emission spectroscopies. Nanoparticles with very narrow size distribution (0.0092–0.105 ATh cross-linked, 0.0635–0.272 uncross-linked) and ideal spherical shape (radius 35–47 nm ATh cross-linked, 49–109 nm uncross-linked) were obtained whatever the reaction composition. The size of the particles was found to depend strongly on the level of ATh-stabilization and to diminish upon increase of the ATh content. In contrast, in the same order, their thermal stability shifted toward higher temperatures. Thermal decomposition of the nanoparticles led to formation of carbon-nanoobjects, as observed by transmission electron microscopy, FT-IR, and RAMAN spectroscopies. The re-dispersibility of the dry Th-co/or-ThM nanoparticles in some conventional monomers and solvents has been estimated. [less ▲]

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See detailLe rôle de l'immobilier d'entreprise dans la compétitivité des territoires : le cas de la Wallonie
Vandermeer, Marie-Caroline ULg; Halleux, Jean-Marie ULg

in Urbia (2013)

La recherche doctorale en relation avec cet article vise à préciser les liens entre la compétitivité territoriale, l’immobilier d’entreprise et le sujet des parcs d’activités économiques. Le terrain ... [more ▼]

La recherche doctorale en relation avec cet article vise à préciser les liens entre la compétitivité territoriale, l’immobilier d’entreprise et le sujet des parcs d’activités économiques. Le terrain empirique investigué est celui de la Wallonie, une région où la disponibilité en terrains à vocation économique est considérée comme un levier essentiel du redéploiement économique. L’objectif de cet article est de rendre compte des grands questionnements ayant conduit à structurer notre projet de thèse. Afin de répondre à cet objectif, nous avons organisé l’article en trois chapitres. Le premier vise à présenter le contexte investigué. Nous y dressons un bref état des lieux quant à la problématique des parcs d’activités en Wallonie. Au deuxième chapitre, nous synthétisons notre état de l’art, en précisant comment la compétitivité territoriale s’articule au domaine de l’immobilier d’entreprise. Enfin, en troisième partie, nous présentons les principales étapes de notre projet doctoral, dont l’objectif opérationnel est d’aider les autorités wallonnes à mieux préciser leur stratégie en matière de terrains à vocation économique. [less ▲]

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See detailAIP (abnormally invasive placenta) – from a retained placenta to destruction of the uterine wall
Langhoff-Roos, Jens; CHANTRAINE, Frédéric ULg; Geirrson, Reynir

in Acta Obstetricia et Gynecologica Scandinavica (2013), 92(4), 367-8

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See detailBio-Objects' Political Capacity: A Research Agenda
Maeseele, Pieter; Hendrickx, Kim ULg; Pavone, Vincenzo et al

in Croatian Medical Journal (2013), 54

This article explores the merits of foregrounding the dichotomy of politicization vs de-politicization for our understanding of bio-objects in order to study their production, circulation, and governance ... [more ▼]

This article explores the merits of foregrounding the dichotomy of politicization vs de-politicization for our understanding of bio-objects in order to study their production, circulation, and governance in European societies. By asking how bio-objects are configured in science, policy, public, and media discourses and practices, we focus on the role of socio-technical configurations in generating political relations. The bio-object thereby serves as an entry point to approach and conceptualize “the political” in an innovative way. Drawing from our previous work, which uses the concepts of de-politicization and (re-)politicization, this paper puts forward a research agenda for studying the political relations generated by specific socio-technical configurations of bio-objects. [less ▲]

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See detailMultiobjective Genetic Algorithm Approach to the Economic Statistical Design of Control Charts with an application to Xbar and S2 charts
Faraz, Alireza ULg; Saniga, Erwin

in Quality and Reliability Engineering International (2013), 29(3), 407-415

Control charts are the primary tools of statistical process control. These charts may be designed by using a simple rule suggested by Shewhart, by a statistical criterion, an economic criterion or a joint ... [more ▼]

Control charts are the primary tools of statistical process control. These charts may be designed by using a simple rule suggested by Shewhart, by a statistical criterion, an economic criterion or a joint economic-statistical criterion. Each method has its strengths and weaknesses. One weakness of the methods of design listed above is their lack of flexibility and adaptability, a primary objective of practical mathematical models. In this paper, we explore multi objective models as an alternative for the methods listed above. These provide a set of optimal solutions rather than a single optimal solution and thus allow the user to tailor their solution to the temporal imperative of a specific industrial situation. We present a solution to a well known industrial problem and compare optimal multi objective designs to economic designs, statistical designs, economic statistical designs and heuristic designs. [less ▲]

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See detailEnzymatic but not compensated Jaffe methods reach the desirable specifications of NKDEP at normal levels of creatinine. results of the French multicentric evaluation
Boutten, Anne; Bargnoux, Anne-Sophie; Carlier, Marie-Christine et al

in Clinica Chimica Acta (2013), 419

The French Society of Clinical Biochemistry conducted this study to compare the accuracy and performances of the best creatinine enzymatic assays and the compensated Jaffe methods from the same ... [more ▼]

The French Society of Clinical Biochemistry conducted this study to compare the accuracy and performances of the best creatinine enzymatic assays and the compensated Jaffe methods from the same manufacturers. Creatinine was measured in 3 serum pools with creatinine levels of 35.9±0.9 μmol/L, 74.4±1.4 μmol/L, and 97.9±1.7 μmol/L (IDMS determination). The performances of the assays (total error that includes the contribution of bias and imprecision) were evaluated using Monte-Carlo simulations and compared against desirable NKDEP criteria. The enzymatic assays always fell within the desirable total Error of 7.6%. By contrast, this requirement was never obtained for the compensated Jaffe methods at the critical level of 74.4±1.4 μmol/L. Only the compensated Jaffe creatinine on Olympus analyzer reached this specification at 35.9±0.9 and 97.9±1.7 μmol/L levels. This study demonstrates that, despite substantial improvement regarding traceability to the IDMS reference method and precision, compensated Jaffe creatinine methods, by contrast to enzymatic ones, do not reach the desirable specifications of NKDEP at normal levels of creatinine. [less ▲]

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See detailPredicting response to rFVIIa in neonates with intractable bleeding or severe coagulation disturbances.
GKIOUGKI, Evangelia ULg; Mitsiakos, Georgios; Chatziioannidis, Elias et al

in Journal of pediatric hematology/oncology (2013), 35(3), 221-6

BACKGROUND: To date, clinical experience with recombinant factor VIIa (rFVIIa) in neonates is rather limited because of the lack of controlled studies. AlphaIM: The objective of this study was to present ... [more ▼]

BACKGROUND: To date, clinical experience with recombinant factor VIIa (rFVIIa) in neonates is rather limited because of the lack of controlled studies. AlphaIM: The objective of this study was to present further experience from our center with regard to the use of rFVIIa in newborns with severe bleeding or coagulopathy resistant to conventional therapy and to determine factors affecting the clinical outcome. METHODOLOGY: We performed a retrospective data analysis of 29 neonates with intractable bleeding or severe coagulation disturbances. All patients received 100 mug/kg of rFVIIa per dose bolus intravenously (maximum of 23 doses), as rescue procedure after other interventions had failed to achieve hemostasis. RESULTS: Fourteen neonates survived (group A), whereas 15 died (group B). There was no difference in birth weight, gestational age, and bleeding site and causes between the 2 groups. In the neonates who survived, rFVIIa had been administered earlier in the disease process (<24 h of beginning of bleeding) compared with those who died (P=0.009). In all 29 neonates, international normalized ratio was directly restored (from 2.99+/-1.4 before rFVIIa administration to 1.6+/-1.1 afterward, P<0.001) and prothrombin time and activated partial thromboplastin time were significantly decreased after administration of rFVIIa (from 28 to 16.4 and from 180 to 67, respectively; P=0.001 and 0.05, respectively). Blood products administered were significantly less in group A than in group B, as time from the beginning of bleeding to the administration of rFVIIa was significantly less in group A than in group B. Neither acute adverse events nor thromboembolic complications were observed. CONCLUSIONS: In this neonatal group with intractable bleeding and/or severe coagulation disturbances, rFVIIa was more effective in early intervention as rescue therapy, without any adverse events in all neonates. Upon failure to achieve hemostasis with initial administration of blood products, fast intervention with rFVIIa could be considered in neonates with serious bleeding and coagulation disorders. [less ▲]

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See detailCensures
Durand, Pascal ULg

in Matière & l'Esprit (La) (2013), 25-27(avril-novembre), 144

Dossier de revue comportant les articles suivants : 1. Pascal Durand (Université de Liège), « La censure au pluriel »; 2. Jean-Pierre Cavaillé (École des Hautes Études en Sciences Sociales), « Censure et ... [more ▼]

Dossier de revue comportant les articles suivants : 1. Pascal Durand (Université de Liège), « La censure au pluriel »; 2. Jean-Pierre Cavaillé (École des Hautes Études en Sciences Sociales), « Censure et acceptabilité des énoncés religieux à l’époque médiévale et sous l’ancien régime. La croyance et l’incroyance dans l’histoire et sous le regard de l’historien » ; 3. Laurent Martin (Centre d’histoire de Sciences Po, Paris), « La vraie chasse aux sorcières. Comics et bande dessinée entre censure, répression et autocensure en France, aux États-Unis et au Royaume-Uni au tournant des années 1950 » ; 4. Sarah Sindaco (Université de Gand), « De la Question à la Sensure. L’imprimé en France face à la guerre d’Algérie » ; 5. Sophie Biass (Conservatrice Palais des Papes) & Jean-Louis Fabiani (École des Hautes Études en Sciences Sociales), « La liberté de création à l’épreuve des politiques locales. Sur quelques affaires concernant l’art contemporain » ; 6. Nicolas Thirion (Université de Liège), « Ceci n’est pas une censure. Sur les rapports entre liberté d’expression artistique et liberté de religion » ; 7. Claude Javeau (ULB), « Auto-censure et censure dans les sciences du social » ; 8. François-Emmanuël Boucher (Collège militaire du Canada), « Politiquement correct et censure à rebours. A propos de Philippe Muray » ; 9. Mélanie Geelkens et Marc Vanesse (Université de Liège) : « Un débat barré. Les dessous d'une carte blanche : l'affaire du Vif-L'Express ». [less ▲]

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See detailVeille internet
Godin, Julie ULg

in Mondes en Développement (2013), 161(1), 161-162

Internet resources on the topic of citizen participation in international cooperation.

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See detailStrength enhancements in cold-formed structural sections — Part I: 2 Material testing
Afshan, Sheida; Rossi, Barbara ULg; Gardner, Leroy

in Journal of Constructional Steel Research (2013), 83

This paper describes a material test programme carried out as part of an extensive study into the prediction of strength enhancements in cold-formed structural sections. The experiments cover a wide range ... [more ▼]

This paper describes a material test programme carried out as part of an extensive study into the prediction of strength enhancements in cold-formed structural sections. The experiments cover a wide range of cross-section geometries – twelve Square Hollow Sections (SHS), five Rectangular Hollow Sections (RHS) and one Circular Hollow Section (CHS), and materials – austenitic (EN 1.4301, 1.4571 and 1.4404), ferritic (EN 1.4509 and 1.4003), duplex (EN 1.4462) and lean duplex (EN 1.4162) stainless steel and grade S355J2H carbon steel. The experimental techniques implemented, the generated data and the analysis methods employed are fully described. The results from the current test programme were combined with existing measured stress-strain data on cold-formed sections from the literature and following a consistent analysis of the combined data set, revised values for Young’s modulus E and the Ramberg-Osgood material model parameters n, n' 0.2,u and n'0.2,1.0 are recommended. A comparison between the recommended values and the codified values provided in AS/NZS 4673, SEI/ASCE-8 and EN 1993-1-4 is also presented. The test results are also used in a companion paper for developing suitable predictive models to determine the strength enhancements in cold-formed structural sections that arise during the manufacturing processes. [less ▲]

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See detailBoundary lines in symbiosis forms
Parmentier, Eric ULg; Michel, Loïc ULg

in Symbiosis (2013)

Symbiosis can take different forms (parasitism, mutualism, commensalism, etc.) but boundaries between different types of symbiotic interactions are not well defined. The kinds of symbiotic associations ... [more ▼]

Symbiosis can take different forms (parasitism, mutualism, commensalism, etc.) but boundaries between different types of symbiotic interactions are not well defined. The kinds of symbiotic associations between organisms cannot however be restricted to isolated and distinct categories. These associations are part of a broad continuum in which it is difficult to know where one type of association ends and another begins. Moreover, different scientists use the same term to mean different things or different terms tomean the same thing. This can obscure what is biologically important and what is not. This communication proposes a new classification scheme, which simply and comprehensively illustrates relationships between the various kinds of associations. The scheme illustrates relationships clearly and highlights the continuum between types of associations. It further indicates where modifications to the scheme are possible over time. The classification of the association between two organisms can be reduced to two factors: 1) the impact incurred by the host (benefit or damage) and 2) the relative duration of the association (RDA), i.e. the ratio of the duration of the association to the life expectancy of the symbiont. The conceptual figure provides concrete examples and illustrates some relationships that can change during different life stages. This figure should help teachers and students in the understanding of symbiosis, and could be a starting point for future discussions in the continuously developing research fields studying ecological and evolutionary implications of symbiotic relationships. [less ▲]

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See detailPotential role of Alternaria and Cladosporium species in canine lymphoplasmacytic rhinitis
Mercier, Elise ULg; Peters, I.R.; Billen, Frédéric ULg et al

in Journal of Small Animal Practice (2013), 54 (4)

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See detailL'ambassade de Belgique à Paris et la guerre d'Algérie. Marcel-Henri Jaspar, des légionnaires belges et une Algérie française (août 1959-avril 1961)
Genin, Vincent ULg

in Guerres Mondiales et Conflits Contemporains (2013), (125), 91-110

In a context of generalized decolonization, it turns out useful to study the attitude of the colonial Powers one towards the others. On this account, Belgium, wrapped up in the Congolese crisis, will ... [more ▼]

In a context of generalized decolonization, it turns out useful to study the attitude of the colonial Powers one towards the others. On this account, Belgium, wrapped up in the Congolese crisis, will adopt a specific attitude towards Algerian War, in particular from 1959 till 1961. Two main questions occupy then the current events : the Belgian legionaries enlisted in Algeria and the evolution of the Belgian foreign policy towards the Algeria’s fate. It is the object of our contribution. [less ▲]

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