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See detailDetermination of phenolic organohalogens in human serum from a Belgian population and assessment of parameters affecting the human contamination
Dufour, Patrice ULiege; PIRARD, Catherine ULiege; CHARLIER, Corinne ULiege

in Science of the Total Environment (2017), 599-600

Many in vitro or in vivo studies highlighted the potential deleterious effects of phenolic organohalogenated compounds (POHs) on the health, particularly on the thyroid system homeostasis, however few ... [more ▼]

Many in vitro or in vivo studies highlighted the potential deleterious effects of phenolic organohalogenated compounds (POHs) on the health, particularly on the thyroid system homeostasis, however few large scale human epidemiological studies have been carried out, especially in Europe. Further studies monitoring the human contamination by POHs, the sources of exposure and the influence of these compounds on thyroid health are still needed. Therefore we determined the concentrations of 16 POHs (pentachlorophenol (PCP), tetrabromobisphenol A (TBBPA), 4 bromophenols (BPs), 3 hydroxy-polybromodiphenylethers (OH-PBDEs) and 7 hydroxy-polychlorobiphenyls (OH-PCBs)) in serum from 274 people aged from 18 to 76 years old living in Liege (Belgium) and the surrounding area. A questionnaire about their alimentary habits, life style and home environment was also administered to the volunteers. The predominant compound measured in the population was PCP (median concentration of 593.0 pg mL−1). 4-OH-CB 107, 4-OH-CB 146 and 4-OH-CB 187 were detected in all samples and contributed for 75% of the sum of OH-PCBs (ΣOH-PCBs). The median measured in our population for ΣOH-PCBs was 143.7 pg mL−1. TBBPA and 2,4,6-tribromophenol were detected in 31% and 63.8% of the samples respectively while the detection frequency observed for the other BPs and the OH-PBDEs was close to zero. We computed multivariate regression models in order to assess the influence of demographic and lifestyle parameters on the PCP and ΣOH-PCBs contamination levels. Significant correlation was found between the PCP concentration and sex, smoker status, sea fish consumption and level of education, although the model seemed to be a poor (R2 = 0.14) predictor of the PCP concentration. The model computed for ΣOHPCBs was more explanatory (R2 = 0.61) and involved age, BMI and sea fish consumption. Finally, we assessed the parameters affecting the ΣOH-PCBs/ΣPCBs ratio. The model proposed involved age, BMI, smoker status and parent PCB level, and explained 41% of the variability of the ΣOH-PCBs/ΣPCBs ratio. [less ▲]

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See detailLes communs fonciers à l’ère d’internet au Cambodge, une approche par les conflits
Mellac, Marie; Diepart, Jean-Christophe ULiege

in Netcom (2017), 31(1/2), 129-152

Résumé - Depuis les années 2000, la vie politique cambodgienne est marquée par des conflits majeurs provoqués par la destruction de communs fonciers, ruraux et urbains. Ces conflits jaillissent dans un ... [more ▼]

Résumé - Depuis les années 2000, la vie politique cambodgienne est marquée par des conflits majeurs provoqués par la destruction de communs fonciers, ruraux et urbains. Ces conflits jaillissent dans un contexte où la violence et les relations clientélistes propres à l’exercice du pouvoir d’Etat cambodgien limitent la formation de contre-pouvoirs. Des espaces de résistance existent néanmoins et les possibilités d’internet les transforment ou les amplifient. A travers les conflits fonciers, cet article examine les mobilisations du web et montre qu’elles apportent une dimension informationnelle aux dynamiques sociales de protection des communs fonciers. La mise à disposition de données et informations foncières sur internet par des acteurs de la société civile bouscule le rôle central de l’Etat en la matière. Toutefois, le lien entre les interventions du numérique et la gouvernance foncière ne va pas de soi et reste une piste à explorer. Abstract - Since the years 2000, political life in Cambodia has been deeply marked by land conflicts, brought about by the destruction of rural and urban commons. These conflicts occur in a context where violence and patronage, which are at the core of Cambodian State formation practises, limit approaches to counter power. However, spaces of resistance exist and are actively transformed by the internet. Through the prism of land conflicts, this article examines how different mobilizations of the Web bring an informational dimension to the social dynamics of protecting land-based commons. The release of land-related data and information on the internet by civil society actors shakes up the central role of the State as data gatekeeper. Yet, the link between these intervention on the Web and land governance is not obvious and remain to be explored. Keywords - Land tenure ; Commons ; Internet ; Governance ; Conflict [less ▲]

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See detailB stars seen at high resolution by XMM-Newton
Cazorla, Constantin ULiege; Nazé, Yaël ULiege

in Astronomy and Astrophysics (2017), 608(A54), 1-15

We report on the properties of 11 early B stars observed with gratings on board XMM-Newton and Chandra, thereby doubling the number of B stars analysed at high resolution. The spectra typically appear ... [more ▼]

We report on the properties of 11 early B stars observed with gratings on board XMM-Newton and Chandra, thereby doubling the number of B stars analysed at high resolution. The spectra typically appear soft, with temperatures of 0.2-0.6 keV, and moderately bright (log [L[SUB]X[/SUB]/L[SUB]BOL[/SUB]] -7) with lower values for later type stars. In line with previous studies, we also find an absence of circumstellar absorption, negligible line broadening, no line shift, and formation radii in the range 2-7 R[SUB]⋆[/SUB]. From the X-ray brightnesses, we derived the hot mass-loss rate for each of our targets and compared these values to predictions or values derived in the optical domain: in some cases, the hot fraction of the wind can be non-negligible. The derived X-ray abundances were compared to values obtained from the optical data, with a fair agreement found between them. Finally, half of the sample presents temporal variations, either in the long-term, short-term, or both. In particular, HD 44743 is found to be the second example of an X-ray pulsator, and we detect a flare-like activity in the binary HD 79351, which also displays a high-energy tail and one of the brightest X-ray emissions in the sample. Based on observations collected with the ESA science mission XMM-Newton, an ESA science mission with instruments and contributions directly funded by ESA member states and the USA (NASA). [less ▲]

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See detailThe LBTI Fizeau imager - I. Fundamental gain in high-contrast imaging
Patru, F.; Esposito, S.; Puglisi, A. et al

in Monthly Notices of the Royal Astronomical Society (2017), 472

We show by numerical simulations a fundamental gain in contrast when combining coherently monochromatic light from two adaptive optics (AO) telescopes instead of using a single stand-alone AO telescope ... [more ▼]

We show by numerical simulations a fundamental gain in contrast when combining coherently monochromatic light from two adaptive optics (AO) telescopes instead of using a single stand-alone AO telescope, assuming efficient control and acquisition systems at high speed. A contrast gain map is defined as the normalized point spread functions (PSFs) ratio of a single Large Binocular Telescope (LBT) aperture over the dual Large Binocular Telescope Interferometer (LBTI) aperture in Fizeau mode. The global gain averaged across the AO-corrected field of view is improved by a factor of 2 in contrast in long exposures and by a factor of 10 in contrast in short exposures (i.e. in exposures, respectively, longer or shorter than the coherence time). The fringed speckle halo in short exposures contains not only high-angular resolution information, as stated by speckle imaging and speckle interferometry, but also high-contrast imaging information. A high-gain zone is further produced in the valleys of the PSF formed by the dark Airy rings and/or the dark fringes. Earth rotation allows us to exploit various areas in the contrast gain map. A huge-contrast gain in narrow zones can be achieved when both a dark fringe and a dark ring overlap on to an exoplanet. Compared to a single 8-m LBT aperture, the 23-m LBTI Fizeau imager can provide a gain in sensitivity (by a factor of 4), a gain in angular resolution (by a factor of 3) and, as well, a gain in raw contrast (by a factor of 2-1000 varying over the AO-corrected field of view). [less ▲]

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See detailLe droit de l’Union européenne face à l’économie collaborative
Van Cleynenbreugel, Pieter ULiege

in Revue Trimestrielle de Droit Européen (2017), (4), 697-722

La présente contribution a pour objectif de proposer un état de lieux de l’incidence du droit de l’Union européenne sur le développement, la promotion et la règlementation de l’économie collaborative au ... [more ▼]

La présente contribution a pour objectif de proposer un état de lieux de l’incidence du droit de l’Union européenne sur le développement, la promotion et la règlementation de l’économie collaborative au sein du marché intérieur. Pour ce faire, cet article se divise en deux parties. Dans la première partie, le phénomène de l’économie collaborative ainsi que les approches réglementaires envisagées par les institutions de l’Union européenne pour mieux encadrer cette économie seront analysés. Nous soulignerons que l’Union européenne décide pour l’instant de ne pas proposer de nouveaux instruments de réglementation, préférant plutôt interpréter les instruments et dispositions déjà existants du droit de l’Union européenne. S’inscrivant dans cette approche, la deuxième partie de la contribution dressera une cartographie des dispositions pertinentes du droit de l’Union européenne qui gouvernent l’économie collaborative, en proposant des lignes directrices supplémentaires qui devraient permettre d’encore mieux intégrer l’économie collaborative dans le cadre juridique de l’Union européenne. [less ▲]

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See detailEls Witte, parmi les historiens et leur Cité
Genin, Vincent ULiege

in Contemporanea (2017), XXXIX(4),

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See detailLa « mode existentialiste » : lieux de vie et formes de pensée
Franck, Thomas ULiege

in COnTEXTES : Revue de Sociologie de la Littérature (2017), 19

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See detailHyperoxalurie primaire de type 1 : de l'enfance à l'âge adulte, comment gérer adéquatement l'adhésion au traitement médical?
LEFLOT, Marie ULiege; Krzesinski, Jean-Marie ULiege; COLLARD, Laure ULiege et al

in Néphrologie & Thérapeutique (2017)

We report the cases of three young patients suffering from type 1 primary hyperoxaluria, a metabolic genetic disorder characterized by intracellular accumulation of oxalate and which may result in ... [more ▼]

We report the cases of three young patients suffering from type 1 primary hyperoxaluria, a metabolic genetic disorder characterized by intracellular accumulation of oxalate and which may result in endstage renal disease with systemic impairment. A number of effective conservative therapeutic means are available for early management of affected children particularly when he is growing older. Despite the demonstrated efficacy of conservative therapy, compliance represents a major and daily challenge. Monitoring therapeutic compliance is thus an important task for physicians in charge of this disease. A better understanding of non-compliance causes is required to improve the follow-up of patients for whom treatment education must be a priority. [less ▲]

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See detailSpasticity Management in Disorders of Consciousness
Martens, Géraldine ULiege

in Brain Sciences (2017)

Background: Spasticity is a motor disorder frequently encountered after a lesion involving the central nervous system. It is hypothesized to arise from an anarchic reorganization of the pyramidal and ... [more ▼]

Background: Spasticity is a motor disorder frequently encountered after a lesion involving the central nervous system. It is hypothesized to arise from an anarchic reorganization of the pyramidal and parapyramidal fibers and leads to hypertonia and hyperreflexia of the affected muscular groups. While this symptom and its management is well-known in patients suffering from stroke, multiple sclerosis or spinal cord lesion, little is known regarding its appropriate management in patients presenting disorders of consciousness after brain damage. Objectives: Our aim was to review the occurrence of spasticity in patients with disorders of consciousness and the therapeutic interventions used to treat it. Methods: We conducted a systematic review using the PubMed online database. It returned 157 articles. After applying our inclusion criteria (i.e., studies about patients in coma, unresponsive wakefulness syndrome or minimally conscious state, with spasticity objectively reported as a primary or secondary outcome), 18 studies were fully reviewed. Results: The prevalence of spasticity in patients with disorders of consciousness ranged from 59% to 89%. Current treatment options include intrathecal baclofen and soft splints. Several treatment options still need further investigation; including acupuncture, botulin toxin or cortical activation by thalamic stimulation. Conclusion: The small number of articles available in the current literature highlights that spasticity is poorly studied in patients with disorders of consciousness although it is one of the most common motor disorders. While treatments such as intrathecal baclofen and soft splints seem effective, large randomized controlled trials have to be done and new therapeutic options should be explored [less ▲]

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See detailAbnormally adherent and invasive placenta: a spectrum disorder in need of a name
Collins, Sally; CHANTRAINE, Frédéric ULiege; Morgan, Terry et al

in Ultrasound in Obstetrics & Gynecology (2017)

There is little doubt that the worldwide Cesarean delivery epidemic has led to an increased incidence of abnormally adherent and invasive placentation. The significant impact that this disorder has on ... [more ▼]

There is little doubt that the worldwide Cesarean delivery epidemic has led to an increased incidence of abnormally adherent and invasive placentation. The significant impact that this disorder has on maternal morbidity and mortality has led to a flurry of publications in the literature concerning all aspects of the condition. These papers have arisen from many sources, notably pathologists, epidemiologists, obstetricians and radiologists. [less ▲]

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See detailData-driven probabilistic post-earthquake fire ignition model for a community
Elhami Khorasani, Negar; Gernay, Thomas ULiege; Garlock, Maria

in Fire Safety Journal (2017), 94

Fire following earthquake (FFE), a cascading multi-hazard event, can cause major social and economical losses in a community. In this paper, two existing post-earthquake fire ignition models that are ... [more ▼]

Fire following earthquake (FFE), a cascading multi-hazard event, can cause major social and economical losses in a community. In this paper, two existing post-earthquake fire ignition models that are implemented in Geographic Information System (GIS) based platforms, Hazus and MAEViz/Ergo, are reviewed. The two platforms and their FFE modules have been studied for suitability in community resiliency evaluations. Based on the shortcomings in the existing literature, a new post-earthquake fire ignition model is proposed using historical FFE data and a probabilistic formulation. The procedure to create the database for the model using GIS-based tools is explained. The proposed model provides the probability of ignition at both census tract scale and individual buildings, and can be used to identify areas of a community with high risk of fire ignitions after an earthquake. The model also provides a breakdown of ignitions in different building types. Finally, the model is implemented in MAEViz/Ergo to demonstrate its application in a GIS-based software. [less ▲]

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See detailA 3U CubeSat to Collect UV Photometry of Bright Massive Stars
Desselle, Richard ULiege; Kintziger, Christian ULiege; Rochus, Pierre ULiege et al

in Journal of Small Satellites (2017), 6(3), 635-650

Following the amazing progresses in miniaturizing essential components of spacecraft, the last decade has witnessed an important development of nano- and micro-satellites. Beyond the mere technological ... [more ▼]

Following the amazing progresses in miniaturizing essential components of spacecraft, the last decade has witnessed an important development of nano- and micro-satellites. Beyond the mere technological experiment, these small satellites are now considered as important complements of much larger and more sophisticated probes to do scientific research. In this context we have conducted a feasibility study of a near-UV telescope on-board a 3U CubeSat. The scientific purpose of this payload will be to collect time series of photometric measurements of bright, mainly massive, stars down to an optical magnitude of V=5. This paper presents the optimized optical design of the payload and its associated detector. We further discuss the system accommodation and integration as well as a preliminary mission analysis. A photometric budget taking into account the characteristics of the target stars and the payload performances is also presented. With this feasibility study we demonstrate that it is possible to do a robust science mission using a very small satellite and for a limited cost. [less ▲]

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See detailDevelopment and characterization of lipid-polymeric nanoparticles for oral insulin delivery
Sgorla, Débora; Lechanteur, Anna ULiege; Almeida, Andreia et al

in Expert Opinion on Drug Delivery (2017)

Introduction: The oral route is widely accepted as the most physiological path for exogenous administration of insulin, as it closely mimic the endogenous insulin pathway. Thus, in this work it is ... [more ▼]

Introduction: The oral route is widely accepted as the most physiological path for exogenous administration of insulin, as it closely mimic the endogenous insulin pathway. Thus, in this work it is proposed an innovative lipid-polymeric nanocarrier to delivery insulin orally. Areas covered: Nanoparticles were produced through a modified solvent emulsification-evaporation method, using ethyl palmitate and hydroxypropylmethylcellulose acetate succinate as matrix. Lipid-polymeric nanoparticles were around 300 nm in size, negatively charged (-20 mV) and associated insulin with efficiency higher than 80%. Differential scanning calorimetry suggested thermal stability of nanoparticles. In vitro release assays under simulated gastrointestinal conditions resulted in 9% and 14% of insulin released at pH 1.2 during 2 h and at pH 6.8 for 6 h, respectively, demonstrating the ability of those nanoparticles to protect insulin against premature degradation. Importantly, nanoparticles were observed to be safe at potential therapeutic concentrations as did not originate cytotoxicity to intestinal epithelial cells. Lastly, the permeability of nanoencapsulated insulin through Caco-2 monolayers and a triple Caco-2/HT29-MTX/Raji B cell model correlated well with slow release kinetics, and fosters the effectiveness of nanoparticles to promote intestinal absorption of peptidic drugs. Expert Opinion: Lipid-polymeric nanoparticles were developed to encapsulate and carry insulin through intestine. Overall, nanoparticles provide insulin stability and intestinal permeability. [less ▲]

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See detailChildhood-onset form of myotonic dystrophy type 1 and autism spectrum disorder: Is there comorbidity?
Angeard, N.; Huerta, E.; Jacquette, A. et al

in Neuromuscular disorders : NMD (2017)

Myotonic dystrophy type 1 (DM1) is a multisystemic disorder with neuromuscular symptoms and brain dysfunctions. Depending on the phenotypic expression, the degree of cognitive impairment remains ... [more ▼]

Myotonic dystrophy type 1 (DM1) is a multisystemic disorder with neuromuscular symptoms and brain dysfunctions. Depending on the phenotypic expression, the degree of cognitive impairment remains heterogeneous, ranging from moderate to severe intellectual disability in the congenital form, to executive, visuospatial and personality dysfunction in the adult-onset form. Studies exploring the cognitive or psychiatric impairments in the childhood form of DM1, characterized by an age of onset between one and ten years, uneventful pre and post natal history and normal development the first year of life, are scarce and show conflicting results in regard to a comorbid diagnosis of Autism Spectrum Disorder (ASD). The aim of the current review is to summarize diagnostic criteria and update the state of the debate regarding comorbidity. Evidence from 9 studies collected in PubMed database (representing a total of 175 cases) focusing on clinical, neuropsychological and neuroimaging domains in childhood DM1 is considered and similarities or differences between childhood DM1 and ASD are identified. Highlighting what is known about the neurocognitive features specific to the childhood-onset form of DM1 could help (1) propose early screening regarding socio-emotional and attentional/executive functions or (2) implement therapeutic programs based on reinforcement of executive skills or social cognition. [less ▲]

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See detailDes odeurs pour combattre les taupins
La Forgia, Diana ULiege; Verheggen, François ULiege

in Fiwap info (2017)

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See detailLe droit à la liberté d'expression du travailleur salarié : le devoir de loyauté et le whistle-blowing
Cordier, Quentin ULiege

in Revue de la Faculté de Droit de l'Université de Liège (2017), 3

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See detailHow pixel size affects a sediment connectivity index in central Belgium
Cantreul, Vincent ULiege; Bielders, Charles; Calsamiglia, Aleix et al

in Earth Surface Processes & Landforms (2017)

Connectivity has become an increasingly used concept in hydrological and sediment research. In order to quantify it, various indices have been proposed since the start of the 21st century including the ... [more ▼]

Connectivity has become an increasingly used concept in hydrological and sediment research. In order to quantify it, various indices have been proposed since the start of the 21st century including the index of connectivity developed by Borselli et al. (2008). This index is based on a limited number of factors, the most important one being topography. Sediment connectivity indices values are likely to depend on the digital elevation model (DEM) resolution. The aim of this study was, first, to compare the effect of DEM pixel size (between 0.25 and 10 m, using an UAV) in the Belgian loess belt, a lowland area. We show that the index values were lower when the pixel size decreased (a difference of about 20 % in value between 0.25 and 10 m). In addition, the impact of linear features in the watershed (e.g., grass strip, bank and road) was lower with the largest pixel sizes, and the connectivity pattern was affected with a pixel size of 5 m or more. At lower pixel sizes (1 m or below), some more disconnected regions appeared. These corresponded to zones where there had been water stagnation during and after rainfalls, and was corroborated by field observations. This confirmed the need for a proper resolution according to the objectives of the study. The second aim of this study was to deduce a minimum pixel size for connectivity study, helping local erosion or sedimentation location and consequent land management decisions. In our context, 1 m stands as the optimum DEM resolution. This pixel size permitted to locate all “key areas” in terms of erosion. Very high resolutions (<0.5 m) did not generate much more information, and their calculation time was far greater. [less ▲]

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See detailSunscreens block cutaneous vitamin D production with only a minimal effect on circulating 25-hydroxyvitamin D
Libon, Florence ULiege; Courtois, Justine; LE GOFF, Caroline ULiege et al

in Archives of Osteoporosis (2017)

Summary A 50+ SPF sunscreen decreased significantly cutaneous vitamin D production following a single narrow-band (nb)UVB exposure, independently from the body surface area exposed. In contrast, the ... [more ▼]

Summary A 50+ SPF sunscreen decreased significantly cutaneous vitamin D production following a single narrow-band (nb)UVB exposure, independently from the body surface area exposed. In contrast, the circulating 25(OH)D3 levels were only minimally affected. It is probable that another endogenous source of precursors is selected when skin-originated precursors are lacking. Purpose Sunscreen use, highly advocated for preventing cutaneous carcinogenesis, is potentially leading to an aggravation of vitamin D deficiency with its consequences on bone health. The effect of sunscreens on circulating vitamin D levels remains debated. This study investigated the effect of sunscreen on cutaneous vitamin D production and circulating 25(OH)D3 levels, according to different body surface areas (BSA). Methods Vitamin D and 25(OH)D3 levels were measured in four groups exposed to a single nbUVB exposure on 9% (group I: head and hands), 23% (group II: head, hands and arms), 50% (group III: head, hands, arms and legs) and 96% (group IV: total body) of the body surface without and with a 50+ sun protection factor sunscreen. Results Sunscreen use decreased by 83, 88.3, 75.7 and 92.5% the cutaneous vitamin D production in groups I to IV, respectively, but only by 13.2, 10.5, 7.7 and 10.4% the values of circulating 25(OH)D3, correspondingly. Conclusions Although a 50+ sunscreen decreases significantly cutaneous vitamin D production following a single nbUVB exposure, and independently from the BSA, the circulating 25(OH)D3 levels were only minimally affected. This could be explained by a switch to another endogenous source of precursors. Short-term sunscreen use probably does not affect circulating vitamin D levels and hence does not increase the risk for osteoporosis. The effect of long-term sunscreen use remains however to be determined. [less ▲]

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See detailTraduction en langue française de la version longue du « Back Pain Attitudes Questionnaire » et étude de ses qualités psychométriques
Demoulin, Christophe ULiege; Halleux, Valentine; Darlow, Ben et al

in Mains libres (2017), 4

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See detailThe worked bone industry and intrusive fauna associated with the prehistoric cave burials of Abri des Autours (Belgium)
Goffette, Quentin; Rots, Veerle ULiege; Polet, Caroline et al

in Anthropozoologica (2017), 52(2), 185-201

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See detailDawn Auroral Breakup at Saturn Initiated by Auroral Arcs: UVIS/Cassini Beginning of Grand Finale Phase
Radioti, Aikaterini ULiege; Grodent, Denis ULiege; Yao, Zhonghua ULiege et al

in Journal of Geophysical Research. Space Physics (2017)

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See detailBis(formylphenolato)cobalt(II)-mediated alternating radical copolymerization of tert-butyl 2-trifluoromethylacrylate with vinyl acetate
Banerjee, Sanjib; Bellan, Ekaterina V.; Gayet, Florence et al

in Polymers (2017), 9(12), 705

The organometallic-mediated radical polymerization (OMRP) of vinyl acetate (VAc) and its OMR copolymerization (OMRcoP) with tert-butyl 2-trifluoromethylacrylate (MAF-TBE) mediated by Co(SAL)2 (SAL = 2 ... [more ▼]

The organometallic-mediated radical polymerization (OMRP) of vinyl acetate (VAc) and its OMR copolymerization (OMRcoP) with tert-butyl 2-trifluoromethylacrylate (MAF-TBE) mediated by Co(SAL)2 (SAL = 2-formylphenolato or deprotonated salicylaldehyde) produced relatively well-defined PVAc and poly(VAc-alt-MAF-TBE) copolymers at moderate temperature (<40 ◦C) in bulk. The resulting alternating copolymer was characterized by 1H-, 13C- and 19F-nuclear magnetic resonance (NMR) spectroscopies, and by size exclusion chromatography. The linear first-order kinetic plot, the linear evolutions of the molar mass with total monomer conversion, and the relatively low dispersity (Đ~1.55) of the resulting copolymers suggest that this cobalt complex provides some degree of control over the copolymerization of VAc and MAF-TBE. Compared to the previously investigated cobalt complex OMRP mediators having a fully oxygen-based first coordination sphere, this study emphasizes a few peculiarities of Co(SAL)2: a lower ability to trap radical chains as compared to Co(acac)2 and the absence of catalytic chain transfer reactions, which dominates polymerizations carried in the presence of 9-oxyphenalenone cobalt derivative. [less ▲]

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See detailNormalizing shoulder EMG: an optimal set of maximum isometric voluntary contraction tests considering reproducibility
Schwartz, Cédric ULiege; Tubez, François ULiege; WANG, François-Charles ULiege et al

in Journal of Electromyography and Kinesiology (2017), 37

Normalization of the electromyography (EMG) signal is often performed relatively to maximal voluntary activations (MVA) obtained during maximum isometric voluntary contraction (MVIC). The first aim was to ... [more ▼]

Normalization of the electromyography (EMG) signal is often performed relatively to maximal voluntary activations (MVA) obtained during maximum isometric voluntary contraction (MVIC). The first aim was to provide an inter-session reproducible protocol to normalize the signal of eight shoulder muscles. The protocol should also lead to a level of activation >90% of MVA for >90% of the volunteers. The second aim was to evaluate the influence of the method used to extract the MVA from the EMG envelope on the normalized EMG signal. Thirteen volunteers performed 12 MVICs twice (one-week interval). Several time constants (100 ms to 2 s) were compared when extracting the MVA from the EMG envelope. The EMG activity was also acquired during an arm elevation. Our results show that a combination of nine MVIC tests was required to meet our requirements including reproducibility. Both the number of MVIC tests and the size of the time constant influence the normalized EMG signal during the dynamic activity (variations up to 15%). A time constant of 1 s was a good compromise to extract the MVA. These findings are valuable to improve the reproducibility of EMG signal normalization. [less ▲]

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See detailPalynologie et environnements des sédiments du Dévonien de Saïda (Algérie nord occidentale)
Bougara, M; Steemans, Philippe ULiege; Le Hérissé, A. et al

in Carnets de Géologie = Notebooks on Geology (2017), 17(10), 191-219

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See detailFibrinolysis Shutdown in Severely Injured Trauma Patients: A New World to Explore.
TONGLET, Martin ULiege; D'ORIO, Vincenzo ULiege; GHUYSEN, Alexandre ULiege et al

in Journal of the American College of Surgeons (2017), 225(6), 831-832

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See detailTwo-dimensional speckle tracking echocardiography in calves: feasibility and repeatability study
Lecoq, Laureline ULiege; Moula, Nassim ULiege; Amory, Hélène ULiege et al

in Journal of Veterinary Cardiology : The Official Journal of the European Society of Veterinary Cardiology (2017)

Objectives: To assess the feasibility and repeatability of two-dimensional speckle tracking echocardiography for the evaluation of left ventricular function in healthy calves. Animals: 12 Holstein calves ... [more ▼]

Objectives: To assess the feasibility and repeatability of two-dimensional speckle tracking echocardiography for the evaluation of left ventricular function in healthy calves. Animals: 12 Holstein calves, 62 ± 11.6 days old; 75.25 ± 5.4 Kg. Methods: Observational study. Right parasternal short-axis views at papillary muscle level were recorded in standing calves and subsequently analysed by two-dimensional speckle tracking for global and regional radial and circumferential strains and strain rates and radial displacement. Echocardiographic examinations were performed by 2 observers to evaluate intra- and interobserver repeatability and variability. Results: Two-dimensional speckle tracking was feasible in all calves. Automated tracking was better in systole than in diastole. Repeatability of the technique was good in calves. Systolic radial strain and strain rate peak values showed little variability compared to systolic circumferential strain and strain rate and to all diastolic measurements. Variability of the interobserver measurements was greater than the intraobserver measurements. Conclusions: Two-dimensional speckle tracking is feasible in calves. As in other species, evaluation of systolic radial left ventricular function is more reliable than circumferential and diastolic left ventricular function. [less ▲]

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See detailAlbertina, más viva que muerta
Dubois, Jacques ULiege; Mogollon Zapata, Juan Manuel ULiege

in Revista Linguística y Literatura (2017), 72(38), 272-287

El siguiente texto hace parte de un reciente libro que Jacques Dubois tituló Figuras del deseo. Por una crítica amorosa (Les Impressions Nouvelles, 2011). A Dubois lo conocemos hoy en día como fundador ... [more ▼]

El siguiente texto hace parte de un reciente libro que Jacques Dubois tituló Figuras del deseo. Por una crítica amorosa (Les Impressions Nouvelles, 2011). A Dubois lo conocemos hoy en día como fundador del famoso Grupo μ, al que le debemos la Retórica general (1970), como autor en 1978 de una obra fundamental para la sociología de la literatura, La institución de la literatura, y como especialista de Georges Simenon y de la literatura francesa de los siglos xix y xx. En su último libro, el científico riguroso cede la palabra al lector ferviente, crítico-amoroso desconcertante y lleno de imaginación, pero que no deja de sorprendernos con una nueva propuesta metodológica que bien podría calificarse como «una lectura activa del deseo». ¿En qué consiste esta «crítica amorosa»? ¿Cómo definirla? Se trata, ante todo, de una lectura en la que el crítico, animado por su deseo, rehúsa desempeñar un rol pasivo para intervenir así en la narración que le da vida a los personajes, dejando al mismo tiempo que estos se inmiscuyan en el relato de su propia vida. ¡Y su intervención resulta reveladora! Habitado por el mundo de la novela, el crítico «activo e imaginativo» que es Dubois termina por colaborar con el novelista, o por lo menos con el narrador, para desentrañar los posibles significados del universo narrativo, pero también para encontrar allí posibles fisuras en las que pueda deslizar su potente acción creadora, abriendo así «la perspectiva de una novela que pudo haber sido otra cosa de lo que es» (Dubois, 2011, p. 8). Nos encontramos pues frente a una «lectura activa» que se erige entre las exigencias de significación impuestas por el texto y el deseo que este genera de prolongarlo, de transformarlo. Los vectores de dicho deseo serán los personajes mismos, que el crítico-amoroso acompaña y hace brillar en todas sus potencialidades significativas, dotándolos de una vida segunda. De ahí que, como lo señala el mismo Dubois, «la lectura activa, en su versión amorosa, adquiera derechos sobre la ficción» (p. 10) sin que esto signifique por lo tanto que se traicione el texto, pues se trata más bien de hacerlo explotar. Y es en esta explosión que surge la pregunta, latente en la nueva propuesta que nos hace Dubois, por el acto de la lectura: «¿Qué significa amar un personaje?» ¿Cómo se desarrolla una lectura crítica y creadora? La respuesta nos llevará a lo que podríamos llamar desde ya una lectura social del deseo en la que se opera «un deslizamiento progresivo del placer y de lo sexual hacia lo social», como lo muestra el autor en el siguiente capítulo. [less ▲]

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See detailL'Open Access en Belgique francophone du côté du droit et des juristes: bientôt une réalité ?
Desseilles, François ULiege; Thys, Laurence ULiege

in Cahiers de la Documentation = Bladen voor Documentatie (2017), (4),

Cet article s’attache à faire le point sur le cadre juridique qui entoure le mouvement du Libre Accès (Open Access) en Belgique ainsi qu’à analyser la pratique du milieu juridique eu égard à l’Open Access ... [more ▼]

Cet article s’attache à faire le point sur le cadre juridique qui entoure le mouvement du Libre Accès (Open Access) en Belgique ainsi qu’à analyser la pratique du milieu juridique eu égard à l’Open Access. En ce qui concerne le cadre juridique, on remarque une volonté des autorités tant au niveau fédéral qu’au niveau de la Communauté française de Belgique de soutenir le mouvement et de promouvoir la libre circulation des résultats de la recherche scientifique à tout le moins lorsque celle-ci est financée en tout ou en partie par des fonds publics. Les textes en discussion ne sont certes pas exempts de défauts ; ils constituent néanmoins une avancée qui devrait épargner aux auteurs la tâche difficile de négocier avec les éditeurs le droit de déposer leurs contributions dans un répertoire, nonobstant la cession consentie. L’analyse de la pratique du milieu juridique s’est d’abord concentrée sur celle des éditeurs juridiques belges et a permis de montrer qu’ils oscillent entre statu quo et anticipation dans leur approche individuelle voire collective de l’Open Access. L’intérêt s’est ensuite porté sur la documentation scientifique et juridique en accès libre en partant de l’examen du modèle classique de publication dominant la doctrine juridique, en passant par un des nouveaux canaux de diffusion de cette dernière – les blogs juridiques –, pour arriver aux quelques exemples de périodiques, principalement ou accessoirement juridiques, en accès libre. Enfin, il s’est agi de souligner la pratique du côté de la communauté universitaire et quelques initiatives en la matière. [less ▲]

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See detailMorphological integration and alternative life history strategies: a case study in a facultatively paedomorphic newt
Tomašević, Natasa; Cvijanović, Milena; Denoël, Mathieu ULiege et al

in Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution (2017), 328(8), 737-748

Tetrapod limbs are serially homologous structures that represent a particularly interesting model for studies on morphological integration, i.e. the tendency of developmental systems to produce correlated ... [more ▼]

Tetrapod limbs are serially homologous structures that represent a particularly interesting model for studies on morphological integration, i.e. the tendency of developmental systems to produce correlated variation. In newts, limbs develop at an early larval stage and grow continuously, including after the habitat transition from water to land following metamorphosis. However, aquatic and terrestrial environments impose different constraints and locomotor modes that could affect patterns of morphological integration and evolvability. We hypothesize that this would be the case for alternative heterochronic morphs in newts, i.e. aquatic paedomorphs that keep gills at the adult stage and adult metamorphs that are able to disperse on land. To this end, we analysed patterns and strengths of correlations between homologous skeletal elements of the fore- and hindlimbs as well as among skeletal elements within limbs in both phenotypes in the alpine newt, Ichthyosaura alpestris. Our results showed that metamorphs and paedomorphs had similar, general patterns of limb integration. Partial correlations between homologous limb elements and within limb elements were higher in paedomorphs when compared to metamorphs. Decrease in partial correlation between homologous limb elements in metamorphs is accompanied with a higher evolvability of the terrestrial morph. All these results indicate that environmental demands shaped the patterns of morphological integration of alpine newt limbs and that the observed diversity in correlation structure could be related to a qualitative difference in the modes of locomotion between the morphs. [less ▲]

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See detailPlasma riche en plaquettes (PRP) et lésions discales : revue de la littérature
Charneux, Laurent ULiege; Demoulin, Christophe ULiege; Vanderthommen, Marc ULiege et al

in Neuro-Chirurgie (2017), 63(6), 473-477

The spine has been the subject of extensive clinical research since it is the source of many painful complaints. However, there is little scientific evidence concerning the therapeutic proposals. During ... [more ▼]

The spine has been the subject of extensive clinical research since it is the source of many painful complaints. However, there is little scientific evidence concerning the therapeutic proposals. During the course of life, the intervertebral disc degenerates, which over time diminishes its damping capacity and facilitates the expulsion of the nucleus pulposus through the annulus fibrosus. The degeneration of the intervertebral disc (DDI) is the origin of some back pain and various specific treatments have been developed. These include the infiltration at the center of the intervertebral disc of plasma rich platelet (PRP), composed of multiple growth factors which act on the disc degeneration. This treatment is recent and less invasive than surgery. Preliminary results seem promising. However, many gray areas and several parameters remained to be clarified. In an attempt to do this, a literature review was conducted based on bibliographic databases Pubmed, Medline and Scopus® using the following Mesh terms : PRP, platelet-rich plasma, intradiscal disc degeneration, disc, intradiscal, discogenic. This analysis reveals that at the present time, no reported study has a sufficient perspective to judge the effectiveness of the infiltration of PRP. Early harvest results will be used to set the limits of this treatment. Accordingly, it is therefore currently recommended to introduce PRP injection as a complementary solution to comprehensive care of the spine. Future research will need to generate randomized controlled studies including comparing the results with conservative treatment and measure the cost-benefit relationship. [less ▲]

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See detailResponse.
KEMPENEERS, Céline ULiege; Seaton, Claire; Chilvers, Mark A.

in CHEST (2017), 152(6), 1349-1350

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See detailBeyond dried blood spot: Current microsampling techniques in the context of biomedical applications
Nys, Gwenaël ULiege; Kok, Miranda ULiege; Servais, Anne-Catherine ULiege et al

in TrAC Trends in Analytical Chemistry (2017), 97

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See detailThe Photoelectron Spectroscopy of The Dichoroetylenes: The Geminal Isomer 1,1- Cl2C2H2. An Experimental and Quantum Chemical Study.
Locht, Robert ULiege; Dehareng, Dominique; Leyh, Bernard ULiege

in Journal of Physics Communications (2017), 1(5), 5030

This work analyzes the threshold photoelectron spectrum (TPES) and selected Constant Ion State (CIS) spectra of the 1,1-C2H2Cl2 isomer measured using synchrotron radiation. The TPES is compared to the HeI ... [more ▼]

This work analyzes the threshold photoelectron spectrum (TPES) and selected Constant Ion State (CIS) spectra of the 1,1-C2H2Cl2 isomer measured using synchrotron radiation. The TPES is compared to the HeI-, NeI- and ArII-photoelectron spectra (PES). In the HeI-PES nine photoelectron bands have been observed at vertical ionization energies of 9.992 eV, 11.652 eV, 12.157 eV, 12.536 eV, 13.633 eV, 14.195 eV, at about 15.9 eV and 16.2 eV and at 18.496 eV successively. For most of these bands the adiabatic ionization energy could be determined and a detailed vibrational analysis of the first four bands is presented. All these bands exhibit an extended vibrational structure. In particular, the ground electronic state and the third excited state display an extended vibrational structure upon excitation by the ArII-resonance line. The assignments of the electronic bands and of the vibrational structure are based on quantum chemical calculations. These allowed us to assign the nine electronic states in terms of ionization and double excitation in a molecular orbital scheme. The good correlation between predicted vibrational wavenumbers and the experimental values allowed us to assign all observed vibrational structures. The CIS spectrum of the eight first electronic states of 1,1-C2H2Cl2+ have also been recorded. Vibrationally resolved CIS spectra of the molecular ion ground state have been obtained and are discussed. [less ▲]

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See detailThe cognitive psychology and neuroscience of naming people
Brédart, Serge ULiege

in Neuroscience & Biobehavioral Reviews (2017), 83

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See detailNon-renewable and intermittent renewable energy sources: friends and foes?
Jacqmin, Julien ULiege; Barranes, Edmond; Poudou, Jean-christophe

in Energy Policy (2017), 111

This paper studies the links between non-renewable and intermittent renewable energy sources in the production of electricity. Using U.S. state-level data from 1998 to 2015, we find that the relationship ... [more ▼]

This paper studies the links between non-renewable and intermittent renewable energy sources in the production of electricity. Using U.S. state-level data from 1998 to 2015, we find that the relationship between the price of natural gas and investments in solar and wind capacity is non-linear and can be represented by an inverted U-shape. Hence, for relatively low natural gas prices, the two modes of production are substitutes. After a price threshold is reached, the two are complementary. A theoretical explanation argues that this stylized fact is the result of a trade-off between two characteristics of these modes of production: the high degree of flexibility of electricity production using natural gas as an input and the low marginal cost of renewable energy sources. [less ▲]

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See detailLa mesure de la perfection
Dony, Arthur ULiege

in Revue de Métaphysique et de Morale (Paris, France : 1945) (2017), n°96(2017/4), 555-574

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See detailA Method for Architectural Inclusive Design: the Case of Users Experiencing Down Syndrome
Schelings, Clémentine ULiege; Elsen, Catherine ULiege

in International Journal on Advances in Life Sciences - 1942-2660 (2017), 9(3&4), 151-162

This paper develops an in-situ methodology to help architects insure better inclusion of people with Down syndrome all along preliminary phases of the architectural design process, and eventually to the ... [more ▼]

This paper develops an in-situ methodology to help architects insure better inclusion of people with Down syndrome all along preliminary phases of the architectural design process, and eventually to the designed space. This methodology first offers architects some design keys in regard of how people with Down syndrome interact with two types of spaces: their personal dwellings and some completely unknown spaces. The methodology then unfolds towards more pro-active inclusion of the participants thanks to playful expression of their feelings and perceptions. This paper discusses how this methodology relates to inclusive and universal principles, useful to design smart environments, be they ICT-enabled or not. This paper closes on prevalent models of disability in architecture and how they articulate with the model of “architectural handicap”. [less ▲]

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See detailTraumatologie des sports olympiques de ballon en salle. Partie 3 : le volley-ball et comparaison des 3 sports
Kaux, Jean-François ULiege; Roberjot, Mathieu; DELVAUX, François ULiege et al

in Journal de Traumatologie du Sport (2017), 34(4), 217-222

In volleyball, there is no contact between opponents (excepting faults). Overloading injuries are very frequent, and often involve the knee joint(jumper’s knee), the shoulders (cuff injuries), or the ... [more ▼]

In volleyball, there is no contact between opponents (excepting faults). Overloading injuries are very frequent, and often involve the knee joint(jumper’s knee), the shoulders (cuff injuries), or the spine (spondylolysis). Ankle sprains is the most common trauma, mainly occurring during theattack phase and in the defense position at the net. Among the three Olympic indoor ball sports, volleyball produces the least number of seriousinjuries due to the absence of contact between opponents. Trauma prevalence is mainly observed during games and when the playing surface isinappropriate. [less ▲]

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See detail"Je n'ai jamais eu aucun lien réel avec le romantisme allemand." (W. Herzog) Notes sur 'Les Nains aussi ont commencé petits'
Hamers, Jérémy ULiege; Jousten, Lison ULiege

in Germanica (2017), 61

Les nains aussi ont commencé petits (W. Herzog, 1970) a fait l’objet de nombreuses lectures qui se sont principalement attachées à attribuer une signification politique et sociale à ce film atypique. Ces ... [more ▼]

Les nains aussi ont commencé petits (W. Herzog, 1970) a fait l’objet de nombreuses lectures qui se sont principalement attachées à attribuer une signification politique et sociale à ce film atypique. Ces entreprises interprétatives sont suscitées par la singularité essentielle qui fonde le long-métrage : un casting exclusivement composé de nains. À rebours de ces approches explicatives qui abordent le film en tant que « parabole », mais partant de la singularité qui en est à l’origine, ce texte démontre que la figure du nain et, corollairement, quelques contes de Grimm auxquels le film renvoie l’analyste (Sneewittchen, Das eigensinnige Kind, Wie Kinder Schlachtens mit einander gespielt haben), invitent au dépassement du paradigme explicatif lui-même. C’est donc en quelque sorte à un mouvement de déconstruction de l’intérieur, à partir du cœur même de ce qui justifiait la posture explicative, que ce texte construit un plaidoyer pour une approche des productions culturelles qui lui tourne résolument le dos. [less ▲]

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See detailThe Belgian Internet Investigatory Powers Act – A Model to Pursue at European Level?
Franssen, Vanessa ULiege

in European Data Protection Law Review (2017), (4), 534-542

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See detailBrentano e il pensiero come atto mentale
Boccaccini, Federico ULiege

in Rivista di filosofia (2017), CVIII(3), 365-380

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See detailLe GRIF, la forme revue au féminin ?
Glorie, Caroline ULiege

in Cahiers du GRM (2017), n°12

L’article propose une grille de lecture des Cahiers du Grif à partir des concepts et de la réception en leur sein de la pensée d’Hannah Arendt. L’enjeu de l’article est d’interpréter les continuités et ... [more ▼]

L’article propose une grille de lecture des Cahiers du Grif à partir des concepts et de la réception en leur sein de la pensée d’Hannah Arendt. L’enjeu de l’article est d’interpréter les continuités et les ruptures qui ont marqué les Cahiers du Grif pendant les années quatre-vingt. [less ▲]

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See detailRelativiser la "transition", penser la "contradiction". Ce que nous apprennent les transformations dans le monde du "Blanc-Bleu Belge" en Wallonie aujourd'hui
Gérard, Marie ULiege

in Pour (2017), n°231(2016/3),

En Wallonie, la race blanc-bleu belge incarne de façon exemplaire l’entreprise de modernisation agricole de l’après-guerre. Si, plusieurs décennies durant, elle fut considérée comme une fierté nationale ... [more ▼]

En Wallonie, la race blanc-bleu belge incarne de façon exemplaire l’entreprise de modernisation agricole de l’après-guerre. Si, plusieurs décennies durant, elle fut considérée comme une fierté nationale, l’air du temps a bien changé depuis les années 1970. À l’heure de « l’environnement », du « bien-être animal » et de la « transition agro-écologique », le « BBB » n’échappe plus à la critique qui condamne le « productivisme » agricole, met en évidence les impasses dans lesquelles il nous a conduits et réclame une agriculture respectueuse des animaux, de la nature et des consommateurs. Il n’est dès lors guère surprenant, lorsqu’on se rend sur le terrain, de constater que le monde du blanc-bleu belge connaît de profondes transformations ; reste à savoir ce qu’elles nous enseignent. Après avoir décrit l’émergence d’une double tendance – le durcissement de la logique des « productions animales » à l’œuvre depuis le XIXe siècle, l’émergence d’alternatives multiples renouant avec « l’élevage » –, cet article vise à relativiser la « transition » en vue de mieux penser la « contradiction ». Car ces deux tendances sont contradictoires : la possibilité de leur « coexistence » n’est due qu’à des inégalités économiques, sociales et culturelles de plus en plus importantes entre les classes sociales – inégalités que le modèle de la « transition » a notamment pour effet d’occulter. [less ▲]

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See detailiMAX: a new tool to assess peripheral motor axonal hypoexcitability
MILANTS, Christophe ULiege; BENMOUNA, Karim ULiege; WANG, François-Charles ULiege

in Clinical Neurophysiology (2017), 128(12), 2382-3

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See detailThe review of Audiovisual Media Services Directive: many political voices for one digital Europe?
Vlassis, Antonios ULiege

in Politique Européenne (2017), 56

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See detailLa politique européenne de la culture. Entre paradigme économique et rhétorique de l'exception
Calligaro, Oriane; Vlassis, Antonios ULiege

in Politique Européenne (2017), 56

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See detailThe Rise and Fall of Take Eat Easy, or Why Markets are not Easy to Take in the Sharing Economy
Belleflamme, Paul; Neysen, Nicolas ULiege

in Digiworld Economic Journal (2017), (108/4th Quad.),

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See detailCuriosité : le « curly birch ». Une figuration ondée, rare et recherchée du bois de bouleau
Dubois, Héloïse ULiege; Layon, José; Claessens, Hugues ULiege

in FORÊT.NATURE (2017), (145), 12-15

Nos forêts et leur gestion doivent s’adapter à de grands changements, qu’ils soient climatiques, socio-économiques ou sanitaires. De ce point de vue, le bouleau possède de nombreux atouts, tant en termes ... [more ▼]

Nos forêts et leur gestion doivent s’adapter à de grands changements, qu’ils soient climatiques, socio-économiques ou sanitaires. De ce point de vue, le bouleau possède de nombreux atouts, tant en termes écologiques qu’économiques et sylvicoles. De plus en plus abondant en Europe occidentale, il deviendra à l’avenir un facteur déterminant des décisions sylvicoles. Une recherche approfondie sur l’intérêt de l’essence pour la gestion forestière, ses filières économiques, sa croissance et, surtout, la sylviculture à lui apporter, est en cours à Gembloux Agro-Bio Tech (Liège Université) avec le financement de l’Accord-cadre de recherches et vulgarisation forestières. Elle a notamment été l’occasion de riches échanges avec la Finlande, pays le plus boisé d’Europe. Le bouleau y est une composante très importante des forêts, de l’économie du pays, de la construction et de l’ameublement. Cet article constitue un détour original afin de présenter une figuration rare du bois de bouleau, qui amusera les passionnés du bois et les curieux. Il s’agit du « curly birch », littéralement le « bouleau ondé », actuellement anecdotique mais très lucratif. [less ▲]

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See detailA randomized phase II study evaluating different maintenance schedules of nab-Paclitaxel in the first-line treatment of metastatic breast cancer: final results of the IBCSG 42-12/BIG 2-12 SNAP trial.
Gennari, A.; Sun, Z.; Hasler-Strub, U. et al

in Annals of oncology : official journal of the European Society for Medical Oncology (2017)

Background: The phase II SNAP trial was designed to evaluate the efficacy of alternative chemotherapy schedules for prolonged administration in HER2-negative metastatic breast cancer (MBC), after a short ... [more ▼]

Background: The phase II SNAP trial was designed to evaluate the efficacy of alternative chemotherapy schedules for prolonged administration in HER2-negative metastatic breast cancer (MBC), after a short induction at conventional doses. Methods: Between April 2013 and August 2015, 258 women untreated with chemotherapy for MBC were randomly assigned to receive three different maintenance chemotherapy schedules after three cycles of identical induction chemotherapy: Arm A, nab-Paclitaxel 150 mg/m2 days 1,15 Q28; Arm B, nab-Paclitaxel 100 mg/m2 days 1,8,15 Q28; Arm C, nab-Paclitaxel 75 mg/m2 days 1,8,15,22 Q28. Induction was three cycles nab-Paclitaxel 150/125 mg/m2, days 1,8,15 Q28. The primary objective was to evaluate the efficacy of each maintenance schedule, in terms of progression-free survival (PFS), as compared to the historical reference of 7-month median PFS reported by previous studies with first-line docetaxel. One-sample, one-sided log-rank tests were utilized. Quality-of-life evaluation was performed, global indicator for physical well-being was defined as the primary endpoint; completion rates of quality-of-life forms were >90%. Results: 255 patients were evaluable for the primary endpoint. After 18.2 months median follow-up, 182 PFS events were observed. Median PFS was 7.9 months (90%CI 6.8-8.4) in Arm A, 9.0 months (90%CI 8.1-10.9) in Arm B and 8.5 months (90%CI 6.7-9.5) in Arm C. PFS in Arm B was significantly longer than the historical reference of first-line docetaxel (P=0.03). Grade>/=2 sensory neuropathy was reported in 37.9%, 36.1% and 31.2% of patients in Arm A, Arm B and Arm C, respectively (Grade>/=3 in 9.1%, 5.6% and 6.6% of patients, respectively). Noteworthy, the quality-of-life scores for sensory neuropathy did not worsen with prolonged nab-Paclitaxel administration in any of the maintenance arms. Conclusion: The SNAP trial demonstrated that alternative nab-Paclitaxel maintenance schedules with reduced dosages after a short induction at conventional doses are feasible and active in the first-line treatment of MBC. Registration: ClinicalTrials.gov NCT01746225. [less ▲]

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See detailSepsis prediction in critically ill patients by platelet activation markers on ICU admission: a prospective pilot study
LAYIOS, Nathalie ULiege; Delierneux, Céline ULiege; Hego, Alexandre ULiege et al

in Intensive Care Medicine Experimental (2017), 5(1), 32

Background: Platelets have been involved in both surveillance and host defense against severe infection. To date, whether platelet phenotype or other hemostasis components could be associated with ... [more ▼]

Background: Platelets have been involved in both surveillance and host defense against severe infection. To date, whether platelet phenotype or other hemostasis components could be associated with predisposition to sepsis in critical illness remains unknown. The aim of this work was to identify platelet markers that could predict sepsis occurrence in critically ill injured patients. Results: This single-center, prospective, observational, 7-month study was based on a cohort of 99 non-infected adult patients admitted to ICUs for elective cardiac surgery, trauma, acute brain injury and post-operative prolonged ventilation and followed up during ICU stay. Clinical characteristics and severity score (SOFA) were recorded on admission. Platelet activation markers, including fibrinogen binding to platelets, platelet membrane P-selectin expression, plasma soluble CD40L, and platelet-leukocytes aggregates were assayed by flow cytometry at admission and 48h later, and also at the time of sepsis diagnosis (Sepsis-3 criteria) and 7 days later for sepsis patients. Hospitalization data and outcomes were also recorded. Of the 99 patients, 19 developed sepsis after a median time of 5 days. SOFA at admission was higher; their levels of fibrinogen binding to platelets (platelet-Fg) and of D-dimers were significantly increased compared to the other patients. Levels 48h after ICU admission were no longer significant. Platelet-Fg % was an independent predictor of sepsis (P = 0.030). By ROC curve analysis cutoff points for SOFA (AUC=0.85) and Platelet-Fg (AUC=0.75) were 8 and 50%, respectively. The prior risk of sepsis (19%) increased to 50% when SOFA was above 8, to 46% when Platelet-Fg was above 50%, and to 87% when both SOFA and Platelet-Fg were above their cutoff values. By contrast, when the two parameters were below their cutoffs, the risk of sepsis was negligible (3.8%). Patients with sepsis had longer ICU and hospital stays and higher death rate. Conclusion: In addition to SOFA, platelet-bound fibrinogen levels assayed by flow cytometry within 24h of ICU admission help identifying critically ill patients at risk of developing sepsis. [less ▲]

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See detailImpact d’une réathlétisation précoce sur les performances des sportifs amateurs opérés d’une rupture du ligament croisé du genou
Duval, Thomas; LEHANCE, Cédric ULiege; Croisier, Jean-Louis ULiege et al

in Journal de Traumatologie du Sport (2017), 34(4), 203-207

The analysis of the isokinetic test and the questionnaire of KOOS, enabled us to note differences between the two groups using quantifiedvalues; however, the results were significant. On the other hand ... [more ▼]

The analysis of the isokinetic test and the questionnaire of KOOS, enabled us to note differences between the two groups using quantifiedvalues; however, the results were significant. On the other hand, the analysis of the results obtained through the functional tests showed significantdifferences between the two groups, highlighting the increased performance and benefit for the group participating in weekly reathletization.Conclusion. – In the preliminary study, the quantified values for both groups indicated a greater improvement, but non-significant, in the performancesof the experimental group. A study with more large population should be undertaken. [less ▲]

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See detailLe cinéma corrompu. Film, numérique et glitch art
Tomasovic, Dick ULiege

in Art&Fact (2017), 36

Approche de la pratique du data moshing et de ses expérimentations cinématographiques.

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See detailLa revue comme échec. Sur quelques avatars du projet de « Revue internationale » (1960-1964)
Letawe, Céline ULiege; Provenzano, François ULiege

in Cahiers du GRM (2017)

L’article porte sur le projet de revue avorté Gulliver (1960-1964) et la fascination qu’il a pu exercer dans plusieurs revues d’idées postérieures (1964-2007). Comparer les différentes manières de ... [more ▼]

L’article porte sur le projet de revue avorté Gulliver (1960-1964) et la fascination qu’il a pu exercer dans plusieurs revues d’idées postérieures (1964-2007). Comparer les différentes manières de réfléchir l’échec de Gulliver permet de préciser la finalité et la nature de ces gestes archéologiques, et, dans le même temps, de saisir ce que produit la forme revue quand elle rencontre à la fois l’imaginaire de l’échec et la mythologie de la radicalité. [less ▲]

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See detailCOMPROMIS ET RÉGULATION DES ÉTATS LAÏCS LIBÉRAUX ET DÉMOCRATIQUES
Somabe, Kokou Kouzouahin ULiege

in Mosaïque, Revue Interafricaine de Philosophie, Littérature et Sciences Humaines (2017), 20

While political modernity was marked by a split between spiritual and temporal powers, consecrated by the religious neutrality of the States, which had become secular, actually we notice that the two ... [more ▼]

While political modernity was marked by a split between spiritual and temporal powers, consecrated by the religious neutrality of the States, which had become secular, actually we notice that the two entities find a common framework for cooperation beyond their differences. This new relationship between the state and the religious is revealed to us as a compromise which can be mobilized to rethink social link in secular states, where public spaces are shaken by conflicts of values. In this case, this figure of compromise constitutes for us a pragmatic tool for the construction of a common plural world, which we mobilize to think on the regularization of the current secular societies shaken by the identity crises [less ▲]

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See detailOral supplementation of organic trace minerals to double-muscled Belgian Blue dams in late gestation: clinical and biochemical aspects
Guyot, Hugues ULiege; Martin-Tereso, Javier; Litjens, Wilbert et al

in Vlaams Diergeneeskunde Tijdschift = Flemish Veterinary Journal (2017), 86

Beef cattle are susceptible to trace element deficiencies. The goal of this trial was to study the efficacy of dam supplementation with organic or inorganic trace minerals. Thirteen Belgian Blue farms ... [more ▼]

Beef cattle are susceptible to trace element deficiencies. The goal of this trial was to study the efficacy of dam supplementation with organic or inorganic trace minerals. Thirteen Belgian Blue farms divided into two groups per farm were investigated, resulting in a randomized block design, with two treatments. Animals in treatment A group received a supplement containing 50% organic and 50% inorganic selenium, zinc, and copper, while those in treatment B group received 100% inorganic sources. Blood zinc (p=0.08), selenium in blood (p<0.01) and colostrum (p<0.01) were higher in group A. No difference (p>0.1) was found between treatments regarding the incidence of disease or daily weight gain of the calves. Although the zootechnical performance was equal for both treatments, supplementation with organic trace minerals resulted in a greater nutritional efficacy to sustain the selenium and zinc statuses of the Belgian Blue cattle, and also seemed to mitigate inflammation associated with cesarean section. [less ▲]

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See detailThe Role of Fire in the Life of an Adhesive
Cnuts, Dries ULiege; Tomasso, Sonja ULiege; Rots, Veerle ULiege

in Journal of Archaeological Method & Theory (2017)

The use of fire is essential for the preparation of hafting adhesives; both are suggested to be a proxy for distinguishing the technological expertise and complex cognition among Palaeolithic populations ... [more ▼]

The use of fire is essential for the preparation of hafting adhesives; both are suggested to be a proxy for distinguishing the technological expertise and complex cognition among Palaeolithic populations. While use of fire has been argued to exist from about 1.0 Ma onwards, evidence for adhesives in the Palaeolithic record is rare and fragmented. In spite of the close link between fire places and adhesives, no study has ever focussed on examining the impact of heat on adhesive deposition and preservation. This paper discusses the results of a combustion experiment that was undertaken to understand the impact of heat exposure on hafting adhesives. The results have significant implications for archaeological interpretations. Deposition in or near a fire proves to severely impact the types of residues that preserve on a stone tool. The vertically transferred heat is responsible for the loss of adhesives but also for the incidental production of adhesives and their deposition on stone tools. It can be hypothesised that the rare survival of adhesives on archaeological stone tools might not only be the result of direct contact with the fire but also the result of degradation due to heat from overlying fireplaces. If we are to improve our understanding of the preservation of adhesives, it is important to unstand the taphonomic processes that affect these adhesives, in particular heat alteration. [less ▲]

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See detailDe margarine van Van Ostaijen
Spinoy, Erik ULiege

in Zuurvrij (2017), (33), 44-52

This article opposes the dominant autonomist, decontextualized readings of Paul van Ostaijen's poetry volume Bezette Stad, arguing that the text is highly referential and should therefore be studied by ... [more ▼]

This article opposes the dominant autonomist, decontextualized readings of Paul van Ostaijen's poetry volume Bezette Stad, arguing that the text is highly referential and should therefore be studied by replacing it into its historic and cultural context. [less ▲]

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See detailEnteropathogenic Escherichia coli O80:H2 in Young Calves with Diarrhea, Belgium
Thiry, Damien ULiege; Saulmont, Marc; Takaki, Shino et al

in Emerging Infectious Diseases (2017), 23(12),

Serogroup O80 was detected in 40% of 104 enteropathogenic Escherichia coli isolates from calves with diarrhea from 42 farms in Belgium during 2008‒2015. These isolates harbored the eae-ξ and fliCH2 genes ... [more ▼]

Serogroup O80 was detected in 40% of 104 enteropathogenic Escherichia coli isolates from calves with diarrhea from 42 farms in Belgium during 2008‒2015. These isolates harbored the eae-ξ and fliCH2 genes, similar to the O80 attaching-effacing Shigatoxigenic E. coli isolates found in humans in France. This strain might be emerging. [less ▲]

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See detailThymic haemorrhage due to ingestion of human anticoagulant medication in a puppy
Vangrinsven, Emilie ULiege; Girod, Maud; Etienne, Anne-Laure ULiege et al

in Veterinary Record Case Reports (2017)

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See detailMore than just ‘friends’? Locating migrant domestic workers’ transnational Voluntary Kin relationships
Vivas Romero, Maria ULiege

in Journal of Family Studies (2017)

The author explores the practices through which migrant domestic workers established Transnational Voluntary Kin relations with individuals who are non-blood or law-related. Transnational Voluntary Kin ... [more ▼]

The author explores the practices through which migrant domestic workers established Transnational Voluntary Kin relations with individuals who are non-blood or law-related. Transnational Voluntary Kin are intimate relationships, which alleviate migrants’ reproductive needs by replacing, overlapping or complementing traditional family support. Drawing from Braithwaite, Bach, Baxter, Hosek, & Wolf [(2010). Constructing family: A typology of Voluntary Kin. Journal of Social and Personal Relationships, 27(3), 388–407] four relationships are explored. Firstly, there are ‘More than family’ Kin that replace the care of absent or dead family members. Secondly, there are ‘Just like Family’ Kin that replace the care of physically proximate relatives unable to perform their roles. Thirdly, there are ‘Whenever needed it’ Kin that replace or overlap traditional kin aid in particular situations. Fourthly, there are ‘In law or extended’ Kin constructed through the marriage of traditional kin. Data are drawn from a multi-sited ethnography with Peruvian-Colombian migrant domestic workers and their Transnational Voluntary or Traditional kin. The analysis contributes both to the constructivist sociology of the family and transnational family studies where these relationships remain underexplored. [less ▲]

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See detailMémoire de la bande dessinée dans Au travail de Olivier Josso Hamel – Cases remémorées, redessinées.
Crucifix, Benoît ULiege

in Comicalités : Études de Culture Graphique (2017)

In the first volume of Au travail (2012), Olivier Josso Hamel remembers his childhood readings of classic Franco-Belgian comics by actually redrawing those fetishized panels into the texture of his own ... [more ▼]

In the first volume of Au travail (2012), Olivier Josso Hamel remembers his childhood readings of classic Franco-Belgian comics by actually redrawing those fetishized panels into the texture of his own work. Rooted in an autobiographical approach, this quotational practice denotes a retrospective reflection on what Pierre Sterckx called the “case mémorable” (or “memorable panel”), that is fetishized panels stocked into the readers's memory. Au travail invites us to revisit the memorable panel, which is no longer limited to intimate reading memories but becomes a specific manner through which comics are citable, bound to specific aspects of “graphiation,” defining an individual and collective memory of its past. [less ▲]

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See detailGenotype and protein level interaction in growth traits of meat-type quail through reaction norm models
da Costa Caetano, G.; Fonseca Silva, F.; Calderano, A. et al

in Journal of Animal and Feed Sciences (2017), 26

One possible strategy to optimize breeding programmes in terms of feed costs is selecting animals based on their genetic performance over protein levels (PL). A genotype and environment (G×E) interaction ... [more ▼]

One possible strategy to optimize breeding programmes in terms of feed costs is selecting animals based on their genetic performance over protein levels (PL). A genotype and environment (G×E) interaction in which the gradual environmental changes are represented by the respective PL is such a strategy. Reaction norm models (RNM) are suitable to perform these analyses, since they enable to evaluate genetic differences among animals as well as variance components and heritability estimates over PL. The aim of the study was to investigate the G and PL interaction in two meat-type quail lines (UFV1 and UFV2) for their body weight at day 28 (BW28) and 35 (BW35) of age by using RNM. Diets were composed in order to have different PL (22, 23, 24, 25, 26, 27, 28 and 29%) but the same metabolizable energy (2900 kcal) by keeping constant amino acids : lysine ratio for animal performance. The data set contained 970 and 410 animals from UFV1 and UFV2 lines, respectively. Several RNM (with different Legendre polynomial orders and residual variance classes) were compared via Akaike (AIC) and Schwarz Bayesian (BIC) information criteria. The RNM outperformed (lower AIC and BIC values) the traditional model disregarding G×E and suggested G×PL interaction for BW28 and BW35. The observed moderate-to-high heritabilities increased over PL, thus proving the existence of G×PL for growth traits in meat-type quail. [less ▲]

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See detailInvasive plants as potential food resource for native pollinators: A case study with two invasive species and a generalist bumble bee
Drossart, Maxime; Michez, Denis; Vanderplanck, Maryse ULiege

in Scientific Reports (2017)

It is now well established that invasive plants may induce drifts in the quantity and/or quality of floral resources. They are then often pointed out as a potential driver of bee decline. However, their ... [more ▼]

It is now well established that invasive plants may induce drifts in the quantity and/or quality of floral resources. They are then often pointed out as a potential driver of bee decline. However, their impact on bee population remains quite unclear and still controversial, as bee responses are highly variable among species. Here, we compared the amino acid composition of pollen from three native and two invasive plant species included in diets of common pollinators in NW Europe. Moreover, the nutritional intake (i.e., pollen and amino acid intakes) of Bombus terrestris colonies and the pollen foraging behaviour of workers (i.e., visiting rate, number of foraging trips, weight of pollen loads) were considered. We found significant differences in pollen nutrients among the studied species according to the plant invasive behaviour. We also found significant differences in pollen foraging behaviour according to the plant species, from few to several foraging trips carrying small or large pollen loads. Such behavioural differences directly impacted the pollen intake but depended more likely on plant morphology rather than on plant invasive behaviour. These results suggest that common generalist bumble bees might not always suffer from plant invasions, depending on their behavioural plasticity and nutritional requirements. [less ▲]

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See detailThe feeding system impacts relationships between calving interval and economic results of dairy farms
Dalcq, Anne-Catherine ULiege; Beckers, Yves ULiege; Mayeres, Patrick et al

in Animal (2017)

The calving interval (CI) can potentially impact the economic results of dairy farms. This study highlighted the most profitable CI and innovated by describing this optimum as a function of the feeding ... [more ▼]

The calving interval (CI) can potentially impact the economic results of dairy farms. This study highlighted the most profitable CI and innovated by describing this optimum as a function of the feeding system of the farm. On-farm data were used to represent real farm conditions. A total of 1832 accounts of farms recorded from 2007 to 2014 provided economic, technical and feeding information per herd and per year. A multiple correspondence analysis created four feeding groups: extensive, low intensive, intensive and very intensive herds. The gross margin and some of its components were corrected to account for the effect of factors external to the farm, such as the market, biological status, etc. Then the corrected gross margin (cGMc) and its components were modelled by CI parameters in each feeding system by use of GLM. The relationship between cGMc and the proportion of cows with CI<380 days in each feeding group showed that keeping most of the cows in the herd with CI near to 1 year was not profitable for most farms (for the very intensive farms there was no effect of the proportion). Moreover, a low proportion of cows (0% to 20%) with a near-to-1-year CI was not profitable for the extensive and low intensive farms. Extending the proportion of cows with CI beyond 459 days until 635 days (i.e. data limitation) caused no significant economic loss for the extensive and low intensive farms, but was not profitable for the intensive and very intensive farms. Variations of the milk and feeding components explained mainly these significant differences of gross margin. A link between the feeding system and persistency, perceptible in the milk production and CI shown by the herd, could explain the different relationships observed between the extent of CI and the economic results in the feeding groups. This herd-level study tended to show different economic optima of CI as a function of the feeding system. A cow-level study would specify these tendencies to give CI objectives to dairy breeders as a function of their farm characteristics. [less ▲]

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See detailInvestigating the effects of hydrodynamics and mixing on mass transfer through the free-surface in stirred tank bioreactors
de Lamotte, Anne ULiege; Delafosse, Angélique ULiege; Calvo, Sébastien ULiege et al

in Chemical Engineering Science (2017), 172

In stirred-tank bioreactors, flow structures of various length and time scales are implied in scalar transport phenomena, such as gas species transfer through the liquid free-surface and their ... [more ▼]

In stirred-tank bioreactors, flow structures of various length and time scales are implied in scalar transport phenomena, such as gas species transfer through the liquid free-surface and their homogenization in the bulk. A proper understanding of the underlying mechanisms, i.e. hydrodynamics, mixing and mass transfer, and of their interactions is required to design and develop reliable and efficient production-scale bioprocesses. The objective of the present work is to experimentally investigate the coupling between gas-liquid mass transfer of oxygen with mixing efficiency and circulation patterns inside an arbitrarily chosen stirred-tank configuration aerated through the liquid free-surface, a baffled 20 L-vessel agitated by two Rushton turbines. Based on global parameter values, the most appropriate rotating speed, N = 300 rpm, is selected in order to further study local hydrodynamic quantities using Particle Image Velocimetry (PIV), as well as mixing and mass transfer dynamics using Planar Laser-Induced Fluorescence (PLIF). The results obtained with these local experimental methods are analyzed in detail. Their averages are first successfully compared to global data. Statistical analysis of their spatial distributions show that large-scale flow patterns significantly influence mass transfer through the free-surface of the stirred tank. Even if global measurements show that global characteristic times for mixing and mass transfer differ by two orders of magnitude, local experimental characterization shows persistent vertical gradients of dissolved gas concentrations. So the dissolved gas concentration is not as perfectly uniform as one might expect. [less ▲]

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See detailGenome-wide association study and annotating candidate gene networks affecting age at first calving in Nellore cattle
REIS MOTA, Rodrigo ULiege; Guimarães, S.E.F; Fortes, M.R.S. et al

in Journal of Animal Breeding & Genetics (2017), 134(6), 484492

We performed a genome-wide mapping for the age at first calving (AFC) with the goal of annotating candidate genes that regulate fertility in Nellore cattle. Phenotypic data from 762 cows and 777k SNP ... [more ▼]

We performed a genome-wide mapping for the age at first calving (AFC) with the goal of annotating candidate genes that regulate fertility in Nellore cattle. Phenotypic data from 762 cows and 777k SNP genotypes from 2,992 bulls and cows were used. Single nucleotide polymorphism (SNP) effects based on the single- step GBLUP methodology were blocked into adjacent windows of 1 Megabase (Mb) to explain the genetic variance. SNP windows explaining more than 0.40% of the AFC genetic variance were identified on chromosomes 2, 8, 9, 14, 16 and 17. From these windows, we identified 123 coding protein genes that were used to build gene networks. From the association study and derived gene networks, putative candidate genes (e.g., PAPPA, PREP, FER1L6, TPR, NMNAT1, ACAD10, PCMTD1, CRH, OPKR1, NPBWR1 and NCOA2) and transcription factors (TF) (STAT1, STAT3, RELA, E2F1 and EGR1) were strongly associated with female fertility (e.g., negative regulation of luteinizing hormone secretion, folliculogenesis and establishment of uterine receptivity). Evidence suggests that AFC inheritance is complex and controlled by multiple loci across the genome. As several windows explaining higher proportion of the genetic variance were identified on chromosome 14, further studies investigating the interaction across haplotypes to better understand the molecular architecture behind AFC in Nellore cattle should be undertaken. [less ▲]

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See detailBulk superconducting tube subjected to the stray magnetic field of a solenoid
Hogan, Kevin ULiege; Fagnard, Jean-François ULiege; Wera, Laurent ULiege et al

in Superconductor Science and Technology (2017), 31(1),

Hard type-II hollow superconductors are well suited for low frequency magnetic shielding. The properties and performances of superconducting magnetic shields subjected to homogeneous magnetic fields have ... [more ▼]

Hard type-II hollow superconductors are well suited for low frequency magnetic shielding. The properties and performances of superconducting magnetic shields subjected to homogeneous magnetic fields have been extensively discussed in the literature. In the present work, we investigate the magnetic shielding and the penetration of magnetic flux in a bulk high temperature superconducting tube subjected to the inhomogeneous fringe field of a solenoidal coil. Thanks to a bespoke microdisplacement measurement system, we measure the magnetic field distribution around the tube. We develop a full 3D finite element model based on an H formulation to understand the flux penetration mechanisms and predict the shape of the current loops. Using constitutive law parameters obtained from previous independent experiments, our model is found to be in excellent agreement with the measurements. We discuss how to assess the degree of inhomogeneity of the magnetic field and show that, in our case study, the field can be treated as the magnetic field of an equivalent magnetic dipole. We also show that some features of the flux penetration in inhomogeneous field can be also observed when the tube is subjected to an oblique homogeneous magnetic field, which offers a better understanding of the shielding current density distribution inside the shield. Finally, we discuss the magnetic field concentration occurring around the shield for different magnetic field configurations. In particular, we show that the extremities of the tube on the side not facing the magnetic field source experience the highest flux concentration. [less ▲]

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See detailLes structures sémiotiques dans le croisement football-publicité
Bassilua Nzuzi, Anicet ULiege

in Estudos Semióticos (2017), v. 13(2017),

La production du sens dans l’interaction est un des domaines vers lequel s’orientent aujourd’hui beaucoup de recherches en sémiotique. Il suffit, pour cela, de considérer par exemple les récents travaux ... [more ▼]

La production du sens dans l’interaction est un des domaines vers lequel s’orientent aujourd’hui beaucoup de recherches en sémiotique. Il suffit, pour cela, de considérer par exemple les récents travaux d’Eric Landowski, d’Erik Bertin et d’autres encore, lesquels, en revisitant certaines notions comme la narrativité ou la discursivité, s’emploient à construire de nouveaux modèles sémiotiques, capables de rendre plus adéquatement compte de cette réalité. Dans les situations d’interaction, des grandeurs provenant de diverses entités qui interagissent se croisent en suivant quelques régimes possibles. Notre texte, qui examine le croisement du football avec la publicité, repère au moins deux de ces régimes, très liés : la programmation et l’ajustement, grâce auxquelles les unités de ces deux ensembles réalisent leur mise en commun au stade. Ces régimes produisent du sens en suivant des parcours spécifiques que nous identifions à travers les structures de significations qu’ils mettent en oeuvre. Notre texte, qui voudrait examiner l’héritage du structuralisme dans les études contemporaines, montre que l’étude des structures peut encore servir à l’examen de la production du sens, du moins dans les pratiques contemporaines dans lesquelles nous classons le croisement du football avec la publicité. [less ▲]

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See detailA Methodology to Determine the Potential of Urban Densification through Roof Stacking
Amer, Mohamed ULiege; Mustafa, Ahmed; Teller, Jacques ULiege et al

in Sustainable Cities and Society (2017), 35

Facing the need to accommodate a growing number of inhabitants in major European cities, this research aimed to establish a methodology that facilitates decision making on urban densification through roof ... [more ▼]

Facing the need to accommodate a growing number of inhabitants in major European cities, this research aimed to establish a methodology that facilitates decision making on urban densification through roof stacking. The methodology adopts a systematic approach on three consecutive levels: urban, engineering, and social. Multiple criteria are identified to assess and map the roof stacking potential in terms of location and number of added floors. The Brussels Capital Region was chosen as a case study to experiment with the developed workflow chart and validate the proposed approach, using ArcGIS software, by creating a map of the urban densification potential through roof stacking of Brussels at the city scale. The results show a realistic potential of accommodating 30% of the expected population increase in Brussels by the year 2040 using only roof stacking, provided that the current urban regulations are respected. In addition, a theoretical potential to accommodate more than the expected population increase by the same year is proposed provided that urban planning regulations are relaxed in relation to the height of buildings. Further applications to other cities in Europe would help create additional opportunities to develop an automated tool for estimating such potentials on a wider scope. [less ▲]

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See detailIn-depth glyco-peptidomics approach reveals unexpected diversity of glycosylated peptides and atypical post-translational modifications in dendroaspis angusticeps snake venom
Degueldre, Michel ULiege; Echterbille, Julien; Smargiasso, Nicolas ULiege et al

in International Journal of Molecular Sciences (2017), 18(11), 2483

Animal venoms represent a valuable source of bioactive peptides that can be derived into useful pharmacological tools, or even innovative drugs. In this way, the venom of Dendroaspis angusticeps (DA), the ... [more ▼]

Animal venoms represent a valuable source of bioactive peptides that can be derived into useful pharmacological tools, or even innovative drugs. In this way, the venom of Dendroaspis angusticeps (DA), the Eastern Green Mamba, has been intensively studied during recent years. It mainly contains hundreds of large toxins from 6 to 9 kDa, each displaying several disulfide bridges. These toxins are the main target of venom-based studies due to their valuable activities obtained by selectively targeting membrane receptors, such as ion channels or G-protein coupled receptors. This study aims to demonstrate that the knowledge of venom composition is still limited and that animal venoms contain unexpected diversity and surprises. A previous study has shown that Dendroaspis angusticeps venom contains not only a cocktail of classical toxins, but also small glycosylated peptides. Following this work, a deep exploration of DA glycopeptidome by a dual nano liquid chromatography coupled to electrospray ionization mass spectrometry (nanoLC-ESI-MS) and Matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS) analyses was initiated. This study reveals unsuspected structural diversity of compounds such as 221 glycopeptides, displaying different glycan structures. Sequence alignments underline structural similarities with natriuretic peptides already characterized in Elapidae venoms. Finally, the presence of an S-cysteinylation and hydroxylation of proline on four glycopeptides, never described to date in snake venoms, is also revealed by proteomics and affined by nuclear magnetic resonance (NMR) experiments. © 2017 by the authors. Licensee MDPI, Basel, Switzerland. [less ▲]

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See detailAnxious Mobilities in Accra and Beyond: Making Modern African Subjects in Ama Ata Aidoo’s Changes: A Love Story
Toivanen, Anna-Leena ULiege

in Matatu : Journal for African Culture and Society (2017), 49(2), 307-328

In Aidoo’s Changes: A Love Story (1991), the characters are constantly on the move: tropes of mobility recur throughout the novel. Cars, hotels, business and leisure travel, modern technologies and the ... [more ▼]

In Aidoo’s Changes: A Love Story (1991), the characters are constantly on the move: tropes of mobility recur throughout the novel. Cars, hotels, business and leisure travel, modern technologies and the figure of what can be referred to as the Afropolitan avant la lettre play a pivotal role in embodying meanings that pertain to class, gender, globalisation, and consumerism that mark the postcolonial African condition, and give the novel an articulately contemporary character. This article adopts a wholesale understanding of mobility in order to explore the ways in which Aidoo’s characters employ different forms of mobility in their processes of self-fashioning as modern African subjects. The article draws attention to the anxiety that informs African urban elites processes of self-fashioning, caught as they are between the tensions of the traditional and the modern. [less ▲]

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See detailOverview and future challenges of nearly Zero Energy Buildings (nZEB) design in Southern Europe
Attia, Shady ULiege; Polyvios, Eleftheriou; Xeni, Flouris et al

in Energy and Buildings (2017), 155

In times of great transition of the European construction sector to energy efficient and nearly zero energy buildings (nZEB), a market observation containing qualitative and quantitative indications ... [more ▼]

In times of great transition of the European construction sector to energy efficient and nearly zero energy buildings (nZEB), a market observation containing qualitative and quantitative indications should help to fill out some of the current gaps concerning the EU 2020 carbon targets. Next to the economic challenges, there are equally important factors that hinder renovating the existing residential building stock and adding newly constructed high performance buildings. Under these circumstances this paper summarises the findings of a cross-comparative study of the societal and technical barriers of nZEB implementation in 7 Southern European countries. The study analyses the present situation and provides an overview on future prospects for nZEB in Southern Europe. The result presents an overview of challenges and provides recommendations based on available empirical evidence to further lower those barriers in the European construction sector. The paper finds that the most Southern European countries are poorly prepared for nZEB implementation and especially to the challenge/opportunity of retrofitting existing buildings. Creating a common approach to further develop nZEB targets, concepts and definitions in synergy with the climatic, societal and technical state of progress in Southern Europe is essential. The paper provides recommendations for actions to shift the identified gaps into opportunities for future development of climate adaptive high performance buildings. [less ▲]

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See detailThe Vacuum UV Photoabsorption Spectrum of the Geminal Dichloroethylene (1,1-C2H2Cl2) in the 5-20 eV Range. A Vibrational Analysis of the Valence and Rydberg States.
Locht, Robert ULiege; Dehareng, Dominique; Leyh, Bernard ULiege

in Journal of Physics Communications (2017), 1(04), 5013

The vacuum UV photoabsorption spectrum of 1,1-C2H2Cl2 is presented and discussed in detail in the 6 - 20 eV photon energy range. The broad band observed at 6.488 eV includes the 2b1()→σ*, 2b1()→ ... [more ▼]

The vacuum UV photoabsorption spectrum of 1,1-C2H2Cl2 is presented and discussed in detail in the 6 - 20 eV photon energy range. The broad band observed at 6.488 eV includes the 2b1()→σ*, 2b1()→* valence transitions and the 2b1()→3s Rydberg transitions. A quantum chemical calculation analysis is proposed and applied to the intertwined vibrational structure belonging to these transitions. For the →σ* and →* transitions short vibrational progressions are observed, analyzed and tentatively assigned. The →3s Rydberg transition is characterized by a single progression starting at 6.746 eV. The fine structure observed between 7.5 eV and 10.1 eV has been analyzed in terms of vibronic transitions to ns- (δ= 0.89), np- (δ= 0.59 and 0.37) and nd-type (δ= 0.16) Rydberg states all converging to the 1,1-C2H2Cl2+( 2B1) ionic ground state. The vibrational structure analysis excitation leads to the following wavenumbers: ω2≈ 1310 cm-1 (162 meV), ω4≈ 650 cm-1 (81 meV) and ω5≈ 290 cm-1 (37 meV). These modes can be assigned to the C=C stretching, to the symmetric C-Cl stretching and to the symmetric Cl-C-Cl bending vibrations respectively. By the same way, eight other Rydberg states were analyzed. For the first time the vacuum UV spectrum of 1,1-C2H2Cl2 has been recorded in the 10 eV-20 eV range, revealing intense broad bands which are assigned to transitions to Rydberg states converging to excited states of 1,1-C2H2Cl2+. Assignments are also proposed for the vibrational excitations observed in this range. [less ▲]

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See detailL’expérience des amours infidèles : une forme d’engagement ?
Guillaume, Jean-François ULiege

in SociologieS (2017)

La fin du désir sexuel pour son conjoint, ou son émoussement, expliqueraient, motiveraient ou justifieraient l’infidélité conjugale. La fidélité durerait le temps de l’amour, le temps des émois (inter ... [more ▼]

La fin du désir sexuel pour son conjoint, ou son émoussement, expliqueraient, motiveraient ou justifieraient l’infidélité conjugale. La fidélité durerait le temps de l’amour, le temps des émois (inter)individuels. À la lecture du Grand résumé que Marie-Carmen nous propose, il semble bien que les choses ne sont pas aussi simples que cela. L’abondance des déclinaisons thématiques des amours infidèles et le foisonnement des concepts mobilisés ne peuvent laisser indifférent : il y est question de socialisation, d’identités, d’expérience, de parcours, d’engagement, de marché sexuel ou amoureux, de genre, de secret, de morale, d’éthique, de domination, de violence symbolique, de ressources, etc. [less ▲]

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See detailX-ray study of bow shocks in runaway stars
De Becker, Michaël ULiege; del Valle, M.V.; Romero, G.E. et al

in Monthly Notices of the Royal Astronomical Society (2017), 471(4), 4452-4464

Massive runaway stars produce bow shocks through the interaction of their winds with the interstellar medium, with the prospect for particle acceleration by the shocks. These objects are consequently ... [more ▼]

Massive runaway stars produce bow shocks through the interaction of their winds with the interstellar medium, with the prospect for particle acceleration by the shocks. These objects are consequently candidates for non-thermal emission. Our aim is to investigate the X-ray emission from these sources. We observed with XMM-Newton a sample of 5 bow shock runaways, which constitutes a significant improvement of the sample of bow shock runaways studied in X-rays so far. A careful analysis of the data did not reveal any X-ray emission related to the bow shocks. However, X-ray emission from the stars is detected, in agreement with the expected thermal emission from stellar winds. On the basis of background measurements we derive conservative upper limits between 0.3 and 10 keV on the bow shocks emission. Using a simple radiation model, these limits together with radio upper limits allow us to constrain some of the main physical quantities involved in the non-thermal emission processes, such as the magnetic field strength and the amount of incident infrared photons. The reasons likely responsible for the non-detection of non-thermal radiation are discussed. Finally, using energy budget arguments, we investigate the detectability of inverse Compton X-rays in a more extended sample of catalogued runaway star bow shocks. From our analysis we conclude that a clear identification of non-thermal X-rays from massive runaway bow shocks requires one order of magnitude (or higher) sensitivity improvement with respect to present observatories. [less ▲]

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See detailProtection contre le licenciement en matière de harcèlement, charge de la preuve et notification du congé
Linguelet, Renaud ULiege

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2017)

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See detailImpact of spatio-temporal shade dynamics on wheat growth and yield, perspectives for temperate agroforestry
Artru, Sidonie ULiege; Garré, Sarah ULiege; Dupraz, Christian et al

in European Journal of Agronomy (2017)

A stumbling block to the adoption of silvoarable agroforestry systems is the lack of quantitative knowledge on the performance of different crops when competing for resources with trees. In North-Western ... [more ▼]

A stumbling block to the adoption of silvoarable agroforestry systems is the lack of quantitative knowledge on the performance of different crops when competing for resources with trees. In North-Western Europe, light is likely to be the principal limiting resource for understorey crops, and most agronomic studies show a systematic reduction of final yield as shade increases. However the intensity of the crop response depends on both the environmental conditions and the shade characteristics. This study addressed the issue by monitoring winter wheat (Triticum aestivum L.) growth, productivity and quality under artificial shade provided by military camouflage shade-netting, and using the Hi-sAFe model to relate the artificial shade conditions to those applying in agroforestry systems. The field experiment was carried out over two consecutive years (2013–14 and 2014–15) on the experimental farm of Gembloux Agro-Bio Tech, Belgium. The shade structures recreated two shade conditions: periodic shade (PS) and continuous shade (CS), with the former using overlapping military camouflage netting to provide discontinuous light through the day, and the latter using conventional shade cloth. The experiment simulated shading from a canopy of late-flushing hybrid walnut leaves above winter wheat. Shading was imposed 16 (2013–14) and 10 (2014–15) days before flowering and retained until harvest. The crop experienced full light conditions until the maximum leaf area index stage (LAImax) had been reached. In both years, LAI followed the same dynamics between the different treatments, but in 2013–2014 an attack of the take-all disease (Gaeumannomyces graminis var. tritici) reduced yields overall and prevented significant treatment effects. In season 2014–15 the decrease in global radiation reaching the crop during a period of 66 days (CS: – 61% and PS: – 43%) significantly affected final yield (CS: – 45% and PS: – 25%), mainly through a reduction of the average grain weight and the number of grain per m2. Grain protein content increased by up to 45% under the CS treatment in 2015. Nevertheless, at the plot scale, protein yield (t/ha) did not compensate for the final grain yield decrease. The Hi-sAFe model was used to simulate an agroforestry plot with two lines of walnut trees running either north-south or east-west. The levels of artificial shade levels applied in this experiment were compared to those predicted beneath trees growing with similar climatic conditions in Belgium. The levels used in the CS treatment are only likely to occur real agroforestry conditions on 10% of the cropped area until the trees are 30 years old and only with east-west tree row orientation. [less ▲]

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See detailChina’s new relations with Panama and Costa Rica are another step towards a Beijing Consensus in Central America
Wintgens, Sophie ULiege

in LSE Latin America and the Caribbean (2017)

Increased trade, aid, investment, and diplomatic engagement between China and both Costa Rica and Panama signal a more general projection of Chinese economic and political standards in international trade ... [more ▼]

Increased trade, aid, investment, and diplomatic engagement between China and both Costa Rica and Panama signal a more general projection of Chinese economic and political standards in international trade policy. [less ▲]

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See detailGreenland Ice Sheet Surface Mass Loss: Recent Developments in Observation and Modeling
van den Broeke, M.; Box, J.; Fettweis, Xavier ULiege et al

in Current Climate Change Reports (2017)

Surface processes currently dominate Greenland ice sheet (GrIS) mass loss. We review recent developments in the observation and modeling of GrIS surface mass balance (SMB), published after the July 2012 ... [more ▼]

Surface processes currently dominate Greenland ice sheet (GrIS) mass loss. We review recent developments in the observation and modeling of GrIS surface mass balance (SMB), published after the July 2012 deadline for the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC AR5). Since IPCC AR5, our understanding of GrIS SMB has further improved, but new observational and model studies have also revealed that temporal and spatial variability of many processes are still poorly quantified and understood, e.g., bio-albedo, the formation of ice lenses and their impact on lateral meltwater transport, heterogeneous vertical meltwater transport (‘piping’), the impact of atmospheric-circulation changes and mixed-phase clouds on the surface energy balance, and the magnitude of turbulent heat exchange over rough ice surfaces. As a result, these processes are only schematically or not at all included in models that are currently used to assess and predict future GrIS surface mass loss. [less ▲]

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See detailDevelopment and evaluation of injectable nanosized drug delivery systems for apigenin
Karim, Reatul ULiege; Palazzo, Claudio ULiege; Laloy, Julie et al

in International Journal of Pharmaceutics (2017), 532(2), 757-768

The purpose of this study was to develop different injectable nanosized drug delivery systems (NDDSs) i.e. liposome, lipid nanocapsule (LNC) and polymeric nanocapsule (PNC) encapsulating apigenin (AG) and ... [more ▼]

The purpose of this study was to develop different injectable nanosized drug delivery systems (NDDSs) i.e. liposome, lipid nanocapsule (LNC) and polymeric nanocapsule (PNC) encapsulating apigenin (AG) and compare their characteristics to identify the nanovector(s) that can deliver the largest quantity of AG while being biocompatible. Two liposomes with different surface characteristics (cationic and anionic), a LNC and a PNC were prepared. A novel tocopherol modified poly(ethylene glycol)-b-polyphosphate block-copolymer was used for the first time for the PNC preparation. The NDDSs were compared by their physicochemical characteristics, AG release, storage stability, stability in serum, complement consumption and toxicity against a human macrovascular endothelial cell line (EAhy926). The diameter and surface charge of the NDDSs were comparable with previously reported injectable nanocarriers. The NDDSs showed good encapsulation efficiency and drug loading. Moreover, the NDDSs were stable during storage and in fetal bovine serum for extended periods, showed low complement consumption and were non-toxic to EAhy926 cells up to high concentrations. Therefore, they can be considered as potential injectable nanocarriers of AG. Due to less pronounced burst effect and extended release characteristics, the nanocapsules could be favorable approaches for achieving prolonged pharmacological activity of AG using injectable NDDS. [less ▲]

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See detailDark ice dynamics of the south-west Greenland Ice Sheet
Tedstone, A.; Bamber, J.; Cook, J. et al

in Cryosphere (The) (2017), 11

Runoff from the Greenland Ice Sheet (GrIS) has increased in recent years due largely to changes in atmospheric circulation and atmospheric warming. Albedo reductions resulting from these changes have ... [more ▼]

Runoff from the Greenland Ice Sheet (GrIS) has increased in recent years due largely to changes in atmospheric circulation and atmospheric warming. Albedo reductions resulting from these changes have amplified surface melting. Some of the largest declines in GrIS albedo have occurred in the ablation zone of the south-west sector and are associated with the development of dark ice surfaces. Field observations at local scales reveal that a variety of light-absorbing impurities (LAIs) can be present on the surface, ranging from inorganic particulates to cryoconite materials and ice algae. Meanwhile, satellite observations show that the areal extent of dark ice has varied significantly between recent successive melt seasons. However, the processes that drive such large interannual variability in dark ice extent remain essentially unconstrained. At present we are therefore unable to project how the albedo of bare ice sectors of the GrIS will evolve in the future, causing uncertainty in the projected sea level contribution from the GrIS over the coming decades. Here we use MODIS satellite imagery to examine dark ice dynamics on the south-west GrIS each year from 2000 to 2016. We quantify dark ice in terms of its annual extent, duration, intensity and timing of first appearance. Not only does dark ice extent vary significantly between years but so too does its duration (from 0 to > 80 % of June–July–August, JJA), intensity and the timing of its first appearance. Comparison of dark ice dynamics with potential meteorological drivers from the regional climate model MAR reveals that the JJA sensible heat flux, the number of positive minimum-air-temperature days and the timing of bare ice appearance are significant interannual synoptic controls. We use these findings to identify the surface processes which are most likely to explain recent dark ice dynamics. We suggest that whilst the spatial distribution of dark ice is best explained by outcropping of particulates from ablating ice, these particulates alone do not drive dark ice dynamics. Instead, they may enable the growth of pigmented ice algal assemblages which cause visible surface darkening, but only when the climatological prerequisites of liquid meltwater presence and sufficient photosynthetically active radiation fluxes are met. Further field studies are required to fully constrain the processes by which ice algae growth proceeds and the apparent dependency of algae growth on melt-out particulates. [less ▲]

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See detailEvaluation of adaptive facades: The case study of Al Bahr Towers in the UAE
Attia, Shady ULiege

in Shaping Qatar’s Sustainable Built Environment (2017), 2(6), 1-13

The assessment of adaptive facades presents a barrier as there is no established assessment technique. Many of the available facade performance evaluation systems or frameworks have limited applicability ... [more ▼]

The assessment of adaptive facades presents a barrier as there is no established assessment technique. Many of the available facade performance evaluation systems or frameworks have limited applicability for such advanced building facades. The complexity of adaptive or dynamic facades’ evaluation is related to the performance evaluation of facade elements, systems, and overall building performance coupled with occupant behavior and occupant satisfaction. In this context, this paper presents a case study of an adaptive sunscreen facade and evaluation of its performance and occupant behavior. The evaluation mainly focuses on pre- and post-construction phases of adaptive facades: the design assist phase (including the durability test, visual mockup, onsite mashrabiya mounting, and weather stripping), the commissioning phase (field verification and performance testing), and the monitoring phase. The selected project is a 150-meter-high twin tower that stands with a honeycombinspired structure and automated dynamic solar screen that responds to the sun’s movement. These solar screens respond dynamically and automatically to the angle of the sun, which improves the control over energy consumption, solar radiation, and glare with the ability to allow natural light into the building. This paper is part of the research activities of working group 3 of the European COST Action 1403 on “Adaptive Facades”. Different methods were used for evaluation and these include the following: interviews with the architect, facade engineer, technical control specialist and occupants, reviews of standards and codes, review of energy models, and a systematic design process mapping. A documentation of the case study describing the post-construction occupant comfort and facade operation was prepared. This paper’s audience comprises mainly project managers, architects, and building facade engineers together with facility managers who are concerned with the process of design, construction, and operation of adaptive sunscreens facades. The outcome of this study identifies quantifiable performance indicators and effective strategies for the design and performance evaluation of optimal adaptive facades. [less ▲]

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See detailMulti-temporal monitoring of a regional riparian buffer network (>12,000 km) with LiDAR and photogrammetric point clouds
Michez, Adrien ULiege; Piégay, Hervé; Lejeune, Philippe ULiege et al

in Journal of Environmental Management (2017), 202(2), 424-436

Riparian buffers are of major concern for land and water resource managers despite their relatively low spatial coverage. In Europe, this concern has been acknowledged by different environmental ... [more ▼]

Riparian buffers are of major concern for land and water resource managers despite their relatively low spatial coverage. In Europe, this concern has been acknowledged by different environmental directives which recommend multi-scale monitoring (from local to regional scales). Remote sensing methods could be a cost-effective alternative to field-based monitoring, to build replicable “wall-to-wall” monitoring strategies of large river networks and associated riparian buffers. The main goal of our study is to extract and analyze various parameters of the riparian buffers of up to 12,000 km of river in southern Belgium (Wallonia) from three-dimensional (3D) point clouds based on LiDAR and photogrammetric surveys to i) map riparian buffers parameters on different scales, ii) interpret the regional patterns of the riparian buffers and iii) propose new riparian buffer management indicators. We propose different strategies to synthesize and visualize relevant information at different spatial scales ranging from local (<10 km) to regional scale (>12,000 km). Our results showed that the selected parameters had a clear regional pattern. The reaches of Ardenne ecoregion have channels with the highest flow widths and shallowest depths. In contrast, the reaches of the Loam ecoregion have the narrowest and deepest flow channels. Regional variability in channel width and depth is used to locate management units potentially affected by human impact. Riparian forest of the Loam ecoregion is characterized by the lowest longitudinal continuity and mean tree height, underlining significant human disturbance. As the availability of 3D point clouds at the regional scale is constantly growing, our study proposes reproducible methods which can be integrated into regional monitoring by land managers. With LiDAR still being relatively expensive to acquire, the use of photogrammetric point clouds combined with LiDAR data is a cost-effective means to update the characterization of the riparian forest conditions. [less ▲]

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See detailSeismic inversion of the solar entropy. A case for improving the standard solar model
Buldgen, Gaël ULiege; Salmon, Sébastien ULiege; Noels-Grötsch, Arlette ULiege et al

in Astronomy and Astrophysics (2017), 607

Context. The Sun is the most constrained and well-studied of all stars. As a consequence, the physical ingredients entering solar models are used as a reference to study all other stars observed in the ... [more ▼]

Context. The Sun is the most constrained and well-studied of all stars. As a consequence, the physical ingredients entering solar models are used as a reference to study all other stars observed in the Universe. However, our understanding of the solar structure is still imperfect, as illustrated by the current debate on the heavy element abundances in the Sun. <BR /> Aims: We provide additional information on the solar structure by carrying out structural inversions of a new physical quantity, a proxy of the entropy of the solar plasma whose properties are very sensitive to the temperature gradient below the convective zone. <BR /> Methods: We use new structural kernels to carry out direct inversions of an entropy proxy of the solar plasma and compare the solar structure to various standard solar models built using various opacity tables and chemical abundances. We also link our results to classical tests commonly found in the literature. <BR /> Results: Our analysis allows us to probe more efficiently the uncertain regions of the solar models, just below the convective zone, paving the way for new in-depth analyses of the Sun taking into account additional physical uncertainties of solar models beyond the specific question of chemical abundances. [less ▲]

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See detailA coupled electro-thermal Discontinuous Galerkin method
Homsi, Lina ULiege; Geuzaine, Christophe ULiege; Noels, Ludovic ULiege

in Journal of Computational Physics (2017), 348

This paper presents a Discontinuous Galerkin scheme in order to solve the nonlinear elliptic partial differential equations of coupled electro-thermal problems. In this paper we discuss the fundamental ... [more ▼]

This paper presents a Discontinuous Galerkin scheme in order to solve the nonlinear elliptic partial differential equations of coupled electro-thermal problems. In this paper we discuss the fundamental equations for the transport of electricity and heat, in terms of macroscopic variables such as temperature and electric potential. A fully coupled nonlinear weak formulation for electro-thermal problems is developed based on continuum mechanics equations expressed in terms of energetically conjugated pair of fluxes and fields gradients. The weak form can thus be formulated as a Discontinuous Galerkin method. The existence and uniqueness of the weak form solution are proved. The numerical properties of the nonlinear elliptic problems i.e., consistency and stability, are demonstrated under specific conditions, i.e. use of high enough stabilization parameter and at least quadratic polynomial approximations. Moreover the prior error estimates in the H1-norm and in the L2-norm are shown to be optimal in the mesh size with the polynomial approximation degree. [less ▲]

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See detailA modern study of HD 166734: a massive supergiant system
Mahy, Laurent ULiege; Damerdji, Yassine ULiege; Gosset, Eric ULiege et al

in Astronomy and Astrophysics (2017), 607

Aims: HD 166734 is an eccentric eclipsing binary system composed of two supergiant O-type stars, orbiting with a 34.5-day period. In this rare configuration for such stars, the two objects mainly evolve ... [more ▼]

Aims: HD 166734 is an eccentric eclipsing binary system composed of two supergiant O-type stars, orbiting with a 34.5-day period. In this rare configuration for such stars, the two objects mainly evolve independently, following single-star evolution so far. This system provides a chance to study the individual parameters of two supergiant massive stars and to derive their real masses. Methods: An intensive monitoring was dedicated to HD 166734. We analyzed mid- and high-resolution optical spectra to constrain the orbital parameters of this system. We also studied its light curve for the first time, obtained in the VRI filters. Finally, we disentangled the spectra of the two stars and modeled them with the CMFGEN atmosphere code in order to determine the individual physical parameters. Results: HD 166734 is a O7.5If+O9I(f) binary. We confirm its orbital period but we revise the other orbital parameters. In comparison to what we found in the literature, the system is more eccentric and, now, the hottest and the most luminous component is also the most massive one. The light curve exhibits only one eclipse and its analysis indicates an inclination of 63.0° ± 2.7°. The photometric analysis provides us with a good estimation of the luminosities of the stars, and therefore their exact positions in the Hertzsprung-Russell diagram. The evolutionary and the spectroscopic masses show good agreement with the dynamical masses of 39.5 M[SUB]⊙[/SUB] for the primary and 33.5 M[SUB]⊙[/SUB] for the secondary, within the uncertainties. The two components are both enriched in helium and in nitrogen and depleted in carbon. In addition, the primary also shows a depletion in oxygen. Their surface abundances are however not different from those derived from single supergiant stars, yielding, for both components, an evolution similar to that of single stars. Based on observations collected at the European Southern Observatory (La Silla, Chile) with FEROS and TAROT and on data collected at the San Pedro Mártir observatory (Mexico).The reduced spectra and the light curves are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/607/A96">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/607/A96</A> [less ▲]

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See detailH0LiCOW VII: cosmic evolution of the correlation between black hole mass and host galaxy luminosity
Ding, Xuheng; Treu, Tommaso; Suyu, Sherry H. et al

in Monthly Notices of the Royal Astronomical Society (2017), 472

Strongly lensed active galactic nuclei (AGN) provide a unique opportunity to make progress in the study of the evolution of the correlation between the mass of supermassive black holes (M_BH) and their ... [more ▼]

Strongly lensed active galactic nuclei (AGN) provide a unique opportunity to make progress in the study of the evolution of the correlation between the mass of supermassive black holes (M_BH) and their host galaxy luminosity (L[SUB]host[/SUB]). We demonstrate the power of lensing by analysing two systems for which state-of-the-art lens modelling techniques have been applied to deep Hubble Space Telescope imaging data. We use (i) the reconstructed images to infer the total and bulge luminosity of the host and (ii) published broad-line spectroscopy to estimate M_BH using the so-called virial method. We then enlarge our sample with new calibration of previously published measurements to study the evolution of the correlation out to z ˜ 4.5. Consistent with previous work, we find that without taking into account passive luminosity evolution, the data points lie on the local relation. Once the passive luminosity evolution is taken into account, we find that black holes in the more distant Universe reside in less luminous galaxies than today. Fitting this offset as M_BH/L[SUB]host[/SUB] ∝ (1 + z)[SUP]γ[/SUP], and taking into account selection effects, we obtain γ = 0.6 ± 0.1 and 0.8 ± 0.1 for the case of M_BH-L[SUB]bulge[/SUB] and M_BH-L[SUB]total[/SUB], respectively. To test for systematic uncertainties and selection effects we also consider a reduced sample that is homogeneous in data quality. We find consistent results but with considerably larger uncertainty due to the more limited sample size and redshift coverage (γ = 0.7 ± 0.4 and 0.2 ± 0.5 for M_BH-L[SUB]bulge[/SUB] and M_BH-L[SUB]total[/SUB], respectively), highlighting the need to gather more high-quality data for high-redshift lensed quasar hosts. Our result is consistent with a scenario where the growth of the black hole predates that of the host galaxy. [less ▲]

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See detailHigh-precision multi-wavelength eclipse photometry of the ultra-hot gas giant exoplanet WASP-103 b
Delrez, L.; Madhusudhan, N.; Lendl, M. et al

in Monthly Notices of the Royal Astronomical Society (2017), 474(2), 2334-2351

We present sixteen occultation and three transit light curves for the ultra-short period hot Jupiter WASP-103 b, in addition to five new radial velocity measurements. We combine these observations with ... [more ▼]

We present sixteen occultation and three transit light curves for the ultra-short period hot Jupiter WASP-103 b, in addition to five new radial velocity measurements. We combine these observations with archival data and perform a global analysis of the resulting extensive dataset, accounting for the contamination from a nearby star. We detect the thermal emission of the planet in both the $z'$ and $K_{\mathrm{S}}$-bands, the measured occultation depths being 699$\pm$110 ppm (6.4-$\sigma$) and $3567_{-350}^{+400}$ ppm (10.2-$\sigma$), respectively. We use these two measurements together with recently published HST/WFC3 data to derive joint constraints on the properties of WASP-103 b's dayside atmosphere. On one hand, we find that the $z'$-band and WFC3 data are best fit by an isothermal atmosphere at 2900 K or an atmosphere with a low H$_2$O abundance. On the other hand, we find an unexpected excess in the $K_{\mathrm{S}}$-band measured flux compared to these models, which requires confirmation with additional observations before any interpretation can be given. From our global data analysis, we also derive a broad-band optical transmission spectrum that shows a minimum around 700 nm and increasing values towards both shorter and longer wavelengths. This is in agreement with a previous study based on a large fraction of the archival transit light curves used in our analysis. The unusual profile of this transmission spectrum is poorly matched by theoretical spectra and is not confirmed by more recent observations at higher spectral resolution. Additional data, both in emission and transmission, are required to better constrain the atmospheric properties of WASP-103 b. [less ▲]

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See detailTwenty-year tracking of lighting savings and power density in the residential sector
Attia, Shady ULiege; Hamdy, Mohamed; Ezzeldin, Sherif

in Energy and Buildings (2017), 154

Lighting energy consumption represents a significant percentage of total energy consumption in residential building sector. During the last 20 years, advanced energy-efficient lighting fixtures have been ... [more ▼]

Lighting energy consumption represents a significant percentage of total energy consumption in residential building sector. During the last 20 years, advanced energy-efficient lighting fixtures have been introduced worldwide to conserve the energy consumption in residences. In the Middle East and North Africa (MENA) region, very few studies have been conducted to evaluate the association between the introduced lighting fixtures and the resulted energy savings using valid measurements and verification techniques. This study evaluates the techno-economic impact of replacing new energy efficient lighting in residences in Egypt (a representative MENA region country). A quantitative analysis is applied by tracking the utility bills of 150 residential apartments in Cairo. The average measured power consumption before (1993-1998) and after (2009-2014) installation energy efficient lighting fixtures is analyzed. A building performance simulation model is developed to back the findings. The findings indicate a significant disparity between the estimated savings based on simulation and the real measured savings due to penetration, rebound effect and low quality lamps. Moreover, the findings present an example of quantified benefits of energy efficient lighting, which is very important to inform the decision making of public policy makers, investors and building occupants. [less ▲]

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See detailIncreasing plant functional diversity is not the key for supporting pollinators in wildflower strips
Uyttenbroeck, Roel ULiege; Piqueray, Julien; Hatt, Séverin ULiege et al

in Agriculture, Ecosystems & Environment (2017), 249

Intensification of agriculture has been one of the major drivers for biodiversity loss in recent decades. Pollinators, which serve an important role in pollinating crops as well as wild plants, have shown ... [more ▼]

Intensification of agriculture has been one of the major drivers for biodiversity loss in recent decades. Pollinators, which serve an important role in pollinating crops as well as wild plants, have shown a decline in species richness. Flower strips can be used to support pollinators in agro-ecosystems, however the question remains as to how their design can be optimized in order to best benefit pollinators. Increasing plant species diversity has been shown to be beneficial for pollinators, and it is often suggested that functional traits are driving this relationship. Therefore, increasing plant functional diversity could be a tool to support pollinator abundance and diversity. As experimental evidence on this relationship is scarce, we developed a field study with experimental sown flower strips with four functional diversity levels, based on multiple flower traits and with equal plant species richness. We monitored vegetation development, as well as the flower-visiting pollinator community and their interaction networks with flowers. We were able to create a functional diversity gradient while controlling for plant species richness and evenness. However, in contrast to our expectations, pollinator species richness and evenness were not influenced by functional diversity, and increasing functional diversity even resulted in lower flower visitation rates. Network stability metrics showed no effect or negative relationships with functional diversity. We conclude that increasing functional diversity was not the key for supporting pollinators in wildflower strips. Our results also suggest that, for a constant amount of flower resources, increasing plant functional diversity and thus decreasing redundancy of potential pollinator feeding niches, decreases the amount of flower resources present per feeding niche. As pollinator species tended to have less overlap in their feeding niches in flower strips with increased functional diversity, this may lead to a reduction of flower resources available for pollinator species with a more specialized feeding niche. [less ▲]

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See detailEffects of Transcranial Direct Current Stimulation, Transcranial Pulsed Current Stimulation, and Their Combination on Brain Oscillations in Patients with Chronic Visceral Pain: A Pilot Crossover Randomized Controlled Study.
Thibaut, Aurore ULiege; Russo, Cristina; Hurtado-Puerto, Aura-Maria et al

in Frontiers in Neurology (2017)

Objective: Chronic visceral pain (CVP) syndromes are persistently painful disorders with a remarkable lack of effective treatment options. This study aimed at evaluating the effects of different ... [more ▼]

Objective: Chronic visceral pain (CVP) syndromes are persistently painful disorders with a remarkable lack of effective treatment options. This study aimed at evaluating the effects of different neuromodulation techniques in patients with CVP on cortical activity, through electreocephalography (EEG) and on pain perception, through clinical tests. Design:A pilot crossover randomized controlled study. Settings: Out-patient. Subjects: Adults with CVP (>3 months). Methods: Participants received four interventions in a randomized order: (1) transcranial pulsed current stimulation (tPCS) and active transcranial direct current stimulation (tDCS) combined, (2) tPCS alone, (3) tDCS alone, and (4) sham condition. Resting state quantitative electroencephalography (qEEG) and pain assessments were performed before and after each intervention. Results were compared with a cohort of 47 healthy controls. Results: We enrolled six patients with CVP for a total of 21 visits completed. Compared with healthy participants, patients with CVP showed altered cortical activity characterized by increased power in theta, alpha and beta bands, and a significant reduction in the alpha/beta ratio. Regarding tES, the combination of tDCS with tPCS had no effect on power in any of the bandwidths, nor brain regions. Comparing tPCS with tDCS alone, we found that tPCS induced higher increase in power within the theta and alpha bandwidths. Conclusion: This study confirms that patients with CVP present abnormal EEG-indexed cortical activity compared with healthy controls. Moreover, we showed that combining two types of neurostimulation techniques had no effect, whereas the two interventions, when applied individually, have different neural signatures. [less ▲]

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See detailAn X-ray view of HD 166734, a massive supergiant system
Nazé, Yaël ULiege; Gosset, Eric ULiege; Mahy, Laurent ULiege et al

in Astronomy and Astrophysics (2017), 607(A97), 1-10

The X-ray emission of the O+O binary HD 166734 was monitored using Swift and XMM-Newton observatories, leading to the discovery of phase-locked variations. The presence of an f line in the He-like ... [more ▼]

The X-ray emission of the O+O binary HD 166734 was monitored using Swift and XMM-Newton observatories, leading to the discovery of phase-locked variations. The presence of an f line in the He-like triplets further supports a wind-wind collision as the main source of the X-rays in HD 166734. While temperature and absorption do not vary significantly along the orbit, the X-ray emission strength varies by one order of magnitude, with a long minimum state (Δ(φ) 0.1) occurring after a steep decrease. The flux at minimum is compatible with the intrinsic emission of the O-stars in the system, suggesting a possible disappearance of colliding wind emission. While this minimum cannot be explained by eclipse or occultation effects, a shock collapse may occur at periastron in view of the wind properties. Afterwards, the recovery is long, with an X-ray flux proportional to the separation d (in hard band) or to d[SUP]2[/SUP] (in soft band). This is incompatible with an adiabatic nature for the collision (which would instead lead to F[SUB]X[/SUB] ∝ 1 /d), but could be reconciled with a radiative character of the collision, though predicted temperatures are lower and more variable than in observations. An increase in flux around φ 0.65 and the global asymmetry of the light curve remain unexplained, however. Based on observations collected with Swift and the ESA science mission XMM-Newton, an ESA Science Mission with instruments and contributions directly funded by ESA Member States and the USA (NASA). [less ▲]

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See detailConstraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing. I. Models and simulations
Braibant, Lorraine ULiege; Hutsemekers, Damien ULiege; Sluse, Dominique ULiege et al

in Astronomy and Astrophysics (2017), 607

Recent studies have shown that line profile distortions are commonly observed in gravitationally lensed quasar spectra. Often attributed to microlensing differential magnification, line profile ... [more ▼]

Recent studies have shown that line profile distortions are commonly observed in gravitationally lensed quasar spectra. Often attributed to microlensing differential magnification, line profile distortions can provide information on the geometry and kinematics of the broad emission line region (BLR) in quasars. We investigate the effect of gravitational microlensing on quasar broad emission line profiles and their underlying continuum, combining the emission from simple representative BLR models with generic microlensing magnification maps. Specifically, we considered Keplerian disk, polar, and equatorial wind BLR models of various sizes. The effect of microlensing has been quantified with four observables: μ[SUP]BLR[/SUP], the total magnification of the broad emission line; μ[SUP]cont[/SUP], the magnification of the underlying continuum; as well as red/blue, RBI and wings/core, WCI, indices that characterize the line profile distortions. The simulations showed that distortions of line profiles, such as those recently observed in lensed quasars, can indeed be reproduced and attributed to the differential effect of microlensing on spatially separated regions of the BLR. While the magnification of the emission line μ[SUP]BLR[/SUP] sets an upper limit on the BLR size and, similarly, the magnification of the continuum μ[SUP]cont[/SUP] sets an upper limit on the size of the continuum source, the line profile distortions mainly depend on the BLR geometry and kinematics. We thus built (WCI,RBI) diagrams that can serve as diagnostic diagrams to discriminate between the various BLR models on the basis of quantitative measurements. It appears that a strong microlensing effect puts important constraints on the size of the BLR and on its distance to the high-magnification caustic. In that case, BLR models with different geometries and kinematics are more prone to produce distinctive line profile distortions for a limited number of caustic configurations, which facilitates their discrimination. When the microlensing effect is weak, there is a larger overlap between the characteristics of the line profile distortions produced by the different models, and constraints can only be derived on a statistical basis. [less ▲]

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See detailImproving fungal disease forecasts in winter wheat: A critical role of intra-day variations of meteorological conditions in the development of Septoria leaf blotch
El Jarroudi, Moussa ULiege; kOUADIO, Louis; EL JARROUDI, Mustapha et al

in Field Crops Research (2017), 213

Meteorological conditions are important factors in the development of fungal diseases in winter wheat and are the main inputs of the decision support systems used to forecast disease and thus determine ... [more ▼]

Meteorological conditions are important factors in the development of fungal diseases in winter wheat and are the main inputs of the decision support systems used to forecast disease and thus determine timing for efficacious fungicide application. This study uses the Fourier transform method (FTM) to characterize temporal patterns of meteorological conditions between two neighbouring experimental sites used in a regional fungal disease monitoring and forecasting experiment in Luxembourg. Three meteorological variables (air temperature, relative humidity, and precipitation) were included, all conducive to infection of wheat by Zymoseptoria tritici cause of Septoria leaf blotch (STB) in winter wheat, from 2006 to 2009. The intraday, diurnal, dekadal and intra-seasonal variations of the meteorological variables were assessed using FTM, and the impact of existing contrasts between sites on the development of STB was analyzed. Although STB severities varied between sites and years (P ≤ 0.0003), the results indicated that the two sites presented the same patterns of meteorological conditions when compared at larger temporal scales (diurnal to intra-seasonal scales, with time periods >11 h). However, the intraday variations of all the variables were well discriminated between the sites and were highly correlated to STB severities. Our findings highlight and confirm the importance of intraday meteorological variation in the development of STB in winter wheat fields. Furthermore, the FTM approach has potential for identifying microclimatic conditions prevailing at given sites and could help in improving the prediction of disease forecast models used in regional warning systems. [less ▲]

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See detailUltrasonic roll bite measurements in cold rolling - roll stress and deformation
Carretta, Yves; Hunter, Andrew; Boman, Romain ULiege et al

in Journal of Materials Processing Technology (2017), 249

In cold rolling of thin metal strip, contact conditions between the work rolls and the strip are of great importance: roll deformations and their effect on strip thickness variation may lead to strip ... [more ▼]

In cold rolling of thin metal strip, contact conditions between the work rolls and the strip are of great importance: roll deformations and their effect on strip thickness variation may lead to strip flatness defects and thickness inhomogeneity. To control the process, several online measurements are usually carried out such as the rolling load, forward slip and strip tensions at each stand. Shape defects of the strip are usually evaluated after the last stand of a rolling mill thanks to a flatness measuring roll. However, none of these measurements is made within the roll bite itself due to the harsh conditions taking place in that area. This paper presents a sensor capable of monitoring roll deformations as well as roll radial stresses in situ and in real time. The sensor emits ultrasonic pulses that reflect from the roll surface. The time-of-flight (ToF) of the pulses is recorded during the testing. The sensor system was incorporated into a work roll and tested on a pilot rolling mill. Measurements were taken as steel strips were rolled under different strip elongation. Roll deformation and radial stresses obtained from the experimental data are in good agreement with numerical results computed with a cold rolling model developed in non-linear Finite Element software. [less ▲]

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