Last 7 days
Bookmark and Share    
Full Text
Peer Reviewed
See detailDecrease in climatic conditions favouring floods in the south-east of Belgium over 1959-2010 using the regional climate model MAR
Wyard, Coraline ULg; Scholzen, Chloé ULg; Fettweis, Xavier ULg et al

in International Journal of Climatology (2017), 37(5), 27822796

The Ourthe River, in the south-east of Belgium, has a catchment area of 3,500 km2 and is one of the main tributaries of the Meuse River. In the Ourthe, most of the flood events occur during winter and ... [more ▼]

The Ourthe River, in the south-east of Belgium, has a catchment area of 3,500 km2 and is one of the main tributaries of the Meuse River. In the Ourthe, most of the flood events occur during winter and about 50% of them are due to heavy rainfall events combined to an abrupt melting of the snowpack covering the Ardennes massif during winter. This study aims to determine whether trends in extreme hydroclimatic events generating floods can be detected over the last century in Belgium, where a global warming signal can be observed. Hydroclimatic conditions favourable to floods were reconstructed over 1959- 2010 using the regional climate model MAR (“Modèle Atmosphérique Régional”) forced by the ERA-Interim/ERA-40, the ERA-20C and the NCEP/NCAR-v1 reanalyses. Extreme run-off events, which could potentially generate floods, were detected using run-off caused by precipitation events and snowpack melting from the MAR model. In the validation process, the MAR-driven temperature, precipitation and snow depth were successfully compared to daily weather data over the period 2008-2014 for 20 stations in Belgium. MAR also showed its ability to detect up to 90% of the hydroclimatic conditions which effectively generated observed floods in the Ourthe River over the period 1974- 2010. Conditions favourable to floods in the Ourthe River catchment present a negative trend over the period 1959-2010 as a result of a decrease in snow accumulation and a shortening of the snow season. This trend is expected to accelerate in a warmer climate. However, regarding the impact of the extreme precipitation events evolution on conditions favouring floods, the signal is less clear since the trends depend on the reanalysis used to force the MAR model. [less ▲]

Detailed reference viewed: 94 (44 ULg)
See detailKranzhugeln et seconde révolution urbaine en Haute Mésopotamie au IIIe millénaire av. J.-C.
Mas, Juliette ULg

Scientific conference (2017, April)

Detailed reference viewed: 12 (1 ULg)
Full Text
Peer Reviewed
See detailSize fractionation as a tool for separating charcoal of different fuel source and recalcitrance in the wildfire ash layer
Mastrolonardo, Giovanni ULg

in Science of the Total Environment (2017), 595

Charcoal is a heterogeneous material exhibiting a diverse range of properties. This variability represents a serious challenge in studies that use the properties of natural charcoal for reconstructing ... [more ▼]

Charcoal is a heterogeneous material exhibiting a diverse range of properties. This variability represents a serious challenge in studies that use the properties of natural charcoal for reconstructing wildfires history in terrestrial ecosystems. In this study, we tested the hypothesis that particle size is a sufficiently robust indicator for separating forest wildfire combustion products into fractions with distinct properties. For this purpose, we examined two different forest environments affected by contrasting wildfires in terms of severity: an eucalypt forest in Australia, which experienced an extremely severe wildfire, and a Mediterranean pine forest in Italy, which burned to moderate severity. We fractionated the ash/charcoal layers collected on the ground into four size fractions (>2, 2–1, 1–0.5, <0.5 mm) and analysed them for mineral ash content, elemental composition, chemical structure (by IR spectroscopy), fuel source and charcoal reflectance (by reflected-light microscopy), and chemical/thermal recalcitrance (by chemical and thermal oxidation). At both sites, the finest fraction (<0.5 mm) had, by far, the greatest mass. The C concentration and C/N ratio decreased with decreasing size fraction, while pH and the mineral ash content followed the opposite trend. The coarser fractions showed higher contribution of amorphous carbon and stronger recalcitrance. We also observed that certain fuel types were preferentially represented by particular size fractions. We conclude that the differences between ash/charcoal size fractions were most likely primarily imposed by fuel source and secondarily by burning conditions. Size fractionation can therefore serve as a valuable tool to characterise the forest wildfire combustion products, as each fraction displays a narrower range of properties than the whole sample. We propose the mineral ash content of the fractions as criterion for selecting the appropriate number of fractions to analyse. [less ▲]

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailAn innovative non-animal chitosan hydrogel is able to restore the rheology of osteoarthritis synovial fluid ex vivo
Henrotin, Yves ULg; Rocasalbas, Guillem; Chausson, Mickaël et al

in Osteoarthritis and Cartilage (2017, April)

Detailed reference viewed: 20 (2 ULg)
Full Text
See detailUncertainty quantification of Antarctic contribution to sea-level rise using the fast Elementary Thermomechanical Ice Sheet (f.ETISh) model
Bulthuis, Kevin ULg; Arnst, Maarten ULg; Pattyn, Frank et al

Conference (2017, April)

Uncertainties in sea-level rise projections are mostly due to uncertainties in Antarctic ice-sheet predictions (IPCC AR5 report, 2013), because key parameters related to the current state of the Antarctic ... [more ▼]

Uncertainties in sea-level rise projections are mostly due to uncertainties in Antarctic ice-sheet predictions (IPCC AR5 report, 2013), because key parameters related to the current state of the Antarctic ice sheet (e.g. sub-ice- shelf melting) and future climate forcing are poorly constrained. Here, we propose to improve the predictions of Antarctic ice-sheet behaviour using new uncertainty quantification methods. As opposed to ensemble modelling (Bindschadler et al., 2013) which provides a rather limited view on input and output dispersion, new stochastic methods (Le Maître and Knio, 2010) can provide deeper insight into the impact of uncertainties on complex system behaviour. Such stochastic methods usually begin with deducing a probabilistic description of input parameter uncertainties from the available data. Then, the impact of these input parameter uncertainties on output quantities is assessed by estimating the probability distribution of the outputs by means of uncertainty propagation methods such as Monte Carlo methods or stochastic expansion methods. The use of such uncertainty propagation methods in glaciology may be computationally costly because of the high computational complexity of ice-sheet models. This challenge emphasises the importance of developing reliable and computationally efficient ice-sheet models such as the f.ETISh ice-sheet model (Pattyn, 2015), a new fast thermomechanical coupled ice sheet/ice shelf model capable of handling complex and critical processes such as the marine ice-sheet instability mechanism. Here, we apply these methods to investigate the role of uncertainties in sub-ice-shelf melting, calving rates and climate projections in assessing Antarctic contribution to sea-level rise for the next centuries using the f.ETISh model. We detail the methods and show results that provide nominal values and uncertainty bounds for future sea- level rise as a reflection of the impact of the input parameter uncertainties under consideration, as well as a ranking of the input parameter uncertainties in the order of the significance of their contribution to uncertainty in future sea-level rise. In addition, we discuss how limitations posed by the available information (poorly constrained data) pose challenges that motivate our current research. [less ▲]

Detailed reference viewed: 98 (18 ULg)
Full Text
Peer Reviewed
See detailL’ÉCHOGRAPHIE EN SITUATION DE SOIN : STÉTHOSCOPE DU FUTUR POUR LE MÉDECIN GÉNÉRALISTE ?
Henrard, Gilles ULg; Froidcoeur, Xavier ULg; Schoffeniels, Colombe et al

in Revue Médicale de Liège (2017)

Ultrasound is presently emerging not only as a specialist-delegated diagnostic procedure, but also as a tool used by clinicians for guiding decision. If this paradigm shift has taken roots in places like ... [more ▼]

Ultrasound is presently emerging not only as a specialist-delegated diagnostic procedure, but also as a tool used by clinicians for guiding decision. If this paradigm shift has taken roots in places like emergency departments, initiatives are also set up here and there in general practice. The aim of this article is , through a literature review, to identify possible indications of ultrasound performed by the general practitioner and to initiate a discussion about the obstacles and opportunities associated with its introduction in Belgian General Practice settings. [less ▲]

Detailed reference viewed: 78 (6 ULg)
Full Text
Peer Reviewed
See detailDéploiement de dispositifs numériques au sein de nouvelles formes d’organisation : de l’émergence à la stabilisation
Jemine, Grégory ULg

in Sociologies Pratiques (2017), 34(1), 49-59

De plus en plus d’organisations du secteur des services s’équipent aujourd’hui de dispositifs numériques variés qui modifient les contextes et les contenus du travail. Ces outils sont présentés comme des ... [more ▼]

De plus en plus d’organisations du secteur des services s’équipent aujourd’hui de dispositifs numériques variés qui modifient les contextes et les contenus du travail. Ces outils sont présentés comme des ingrédients indispensables des modes managériales actuelles qui permettraient à divers dispositifs organisationnels promouvant la flexibilité et la mobilité de s’incarner. La présente contribution propose une étude des ressorts de l’émergence et de la stabilisation de ces dispositifs numériques qui émergent dans le cours de transformations organisationnelles. Nous montrons comment, dans une compagnie d’assurances, les dispositifs numériques sont mobilisés pour répondre à une volonté de « modernisation » de l’organisation et d’optimisation de l’espace de travail. [less ▲]

Detailed reference viewed: 20 (7 ULg)
Full Text
Peer Reviewed
See detailPrimary hypertrophic osteoarthropathy due to a novel SLCO2A1 mutation masquerading as acromegaly
Mangupli, Ruth; Daly, Adrian ULg; Cuauro, Elvia et al

in Endocrinology, Diabetes and Metabolism Case Reports (2017)

Detailed reference viewed: 6 (0 ULg)
Full Text
Peer Reviewed
See detailA Royal Head
Laboury, Dimitri ULg; Connor, Simon

in Ben-Tor, Amnon; Zuckerman, Sharon; Bechar, Shlomit (Eds.) et al Hazor VII. The 1990-2012 excavations. The Bronze Age (2017)

Publication / entry in an archaeological report of a greywacke royal head excavated in Tell Hazor, in stratum XIII, in the debris of the final destruction of the site (mid-thirteenth century BCE)

Detailed reference viewed: 19 (1 ULg)
Full Text
Peer Reviewed
See detailVitamin D supplementation in the prevention and management of major chronic diseases not related to mineral homeostasis in adults: research for evidence and a scientific statement from the European society for clinical and economic aspects of osteoporosis and osteoarthritis (ESCEO)
Cianferotti, Luisella; Bertoldo, Francesco; Bischoff-Ferrari, Heike et al

in Endocrine (2017), 56(2), 245-61

Introduction Optimal vitamin D status promotes skeletal health and is recommended with specific treatment in individuals at high risk for fragility fractures. A growing body of literature has provided ... [more ▼]

Introduction Optimal vitamin D status promotes skeletal health and is recommended with specific treatment in individuals at high risk for fragility fractures. A growing body of literature has provided indirect and some direct evidence for possible extraskeletal vitamin D-related effects. Purpose and Methods Members of the European Society for Clinical and Economic Aspects of Osteoporosis and Osteoarthritis have reviewed the main evidence for possible proven benefits of vitamin D supplementation in adults at risk of or with overt chronic extra-skeletal diseases, providing recommendations and guidelines for future studies in this field. Results and conclusions Robust mechanistic evidence is available from in vitro studies and in vivo animal studies, usually employing cholecalciferol, calcidiol or calcitriol in pharmacologic rather than physiologic doses. Although many cross-sectional and prospective association studies in humans have shown that low 25-hydroxyvitamin D levels (i.e., <50 nmol/L) are consistently associated with chronic diseases, further strengthened by a dose-response relationship, several meta-analyses of clinical trials have shown contradictory results. Overall, large randomized controlled trials with sufficient doses of vitamin D are missing, and available small to moderate-size trials often included people with baseline levels of serum 25-hydroxyvitamin D levels >50 nmol/L, did not simultaneously assess multiple outcomes, and did not report overall safety (e.g., falls). Thus, no recommendations can be made to date for the use of vitamin D supplementation in general, parental compounds, or non-hypercalcemic vitamin D analogs in the prevention and treatment of extra-skeletal chronic diseases. Moreover, attainment of serum 25-hydroxyvitamin D levels well above the threshold desired for bone health cannot be recommended based on current evidence, since safety has yet to be confirmed. Finally, the promising findings from mechanistic studies, large cohort studies, and small clinical trials obtained for autoimmune diseases (including type 1 diabetes, multiple sclerosis, and systemic lupus erythematosus), cardiovascular disorders, and overall reduction in mortality require further confirmation. [less ▲]

Detailed reference viewed: 15 (6 ULg)
Full Text
See detailD’une victime à l’autre: Posture ou (im)posture victimaire?
Garcet, Serge ULg

in Revue de la Faculté de Droit de l'Université de Liège (2017), 2017/1

Detailed reference viewed: 20 (8 ULg)
Full Text
Peer Reviewed
See detailSiblings and the coming out process: a comparative case study
Haxhe, Stéphanie ULg; Cerezo, Alison; Bergfeld, Jeanette et al

in Journal of Homosexuality (2017), 64

Detailed reference viewed: 58 (9 ULg)
Full Text
Peer Reviewed
See detailChemokine neutralization as an innovative therapeutic strategy for atopic dermatitis
Abboud, Dayana ULg; Hanson, Julien ULg

in Drug Discovery Today (2017), 22(4), 702-7011

Detailed reference viewed: 31 (4 ULg)
Full Text
Peer Reviewed
See detailFair Trade and Co-operatives
Nicholls, Alex; Huybrechts, Benjamin ULg

in Michie, Jonathan; Blassi, Joseph; Borzaga, Carlo (Eds.) The Handbook of Co-operative and Mutual Businesses (2017)

The Fair Trade and co-operative movements have much in common. This chapter aims to examine the convergences and divergences between the two fields, highlighting what they can learn from each other and ... [more ▼]

The Fair Trade and co-operative movements have much in common. This chapter aims to examine the convergences and divergences between the two fields, highlighting what they can learn from each other and how practitioners and researchers in the two areas can better collaborate. Fair trade is an innovative approach to economic development that uses a market-driven approach to exploit the growing trend in ethical, or caused-based, consumption (Nicholls & Opal 2005). Fair Trade organizations aim to re-engineer the value chains between poor producers and artisans - typically in developing countries - and their wholesale buyers such that a greater proportion of the overall rents accrue to those who provide the inputs. Put simply, Fair Trade aims to ensure that the poorest actors in a supply chain benefit from more of the overall financial value creation as a development tool. Moreover, Fair Trade reconnects producers and consumers at the point of purchase such that consumption becomes a political – or, at least, life style – choice. This chapter is structured as follows. After this introduction, the second section describes the development of Fair Trade from its historical roots to the current organizational landscape and market organization. Next there is a discussion of several key issues and challenges that have emerged as Fair Trade has become increasingly institutionalized. Then, the fourth section explores the relationship between Fair Trade and the co-operative and mutual movements. Finally, conclusions serve to sum up the chapter. [less ▲]

Detailed reference viewed: 165 (15 ULg)
Full Text
See detailDes "fabriques de mosquée" à Bruxelles?
Husson, Jean-François ULg

Article for general public (2017)

Le bourgmestre de Bruxelles a proposé la création de "fabriques de mosquées" pour encadrer l'action des lieux de culte musulmans. Cette carte blanche lui répond, en expliquant qu'un tel instrument existe ... [more ▼]

Le bourgmestre de Bruxelles a proposé la création de "fabriques de mosquées" pour encadrer l'action des lieux de culte musulmans. Cette carte blanche lui répond, en expliquant qu'un tel instrument existe déjà et que cela ne répondra par ailleurs pas à certaines inquiétudes exprimées. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailClinical sub-categorization of minimally conscious state according to resting functional connectivity
Aubinet, Charlène ULg; Heine, Lizette ULg; Martial, Charlotte ULg et al

Conference (2017, March 31)

Introduction: Patients in a minimally conscious state (MCS) have been subcategorized in MCS plus and MCS minus, respectively with and without command following capacity. Here we aim to characterize ... [more ▼]

Introduction: Patients in a minimally conscious state (MCS) have been subcategorized in MCS plus and MCS minus, respectively with and without command following capacity. Here we aim to characterize differences in MCS plus as compared to MCS minus by means of functional connectivity (FC). Method: Resting state functional magnetic resonance imagery (fMRI) was acquired in 292 MCS patients and a seed-based analysis was conducted on a convenience sample of 19 MCS patients (10 MCS plus and 9 MCS minus) and 35 healthy controls. We investigated the left and right frontoparietal networks (FPN), the auditory network and the default mode network (DMN). We employed a ROI-to-ROI analysis to investigate the inter-hemispheric connectivity and we investigated inter-group differences in grey and white matter volume by means of voxel-based morphometry. Results: We found a higher FC in MCS plus as compared to MCS minus in the left FPN, specifically between the left dorso-lateral prefrontal cortex and the left temporo-occipital fusiform cortex (TOFC). The FC of auditory network, right FPN and DMN, inter-hemispheric connectivity and structure of grey and white matter did not show differences between patients groups. Discussion: Our results suggest that the clinical sub-categorization of MCS is sustained by FC differences in a language-related executive control network. MCS plus and MCS minus patients are not differentiated by networks involved in auditory processing, perception of surroundings and internal thoughts, nor by differences in inter-hemispheric connectivity and in morphology. [less ▲]

Detailed reference viewed: 43 (7 ULg)