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See detailEpidermodysplasia Verruciformis–like HPV infection of the Vulva in Immunosuppressed Women
Pohthipornthawat, Natkrita; Feldman, Sarah; Granter, Scott et al

in International Journal of Gynecological Pathology : Official Journal of the International Society of Gynecological Pathologists (in press)

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See detailUrethral intussusception following traumatic catheterization in a male cat
Broux, Olivier ULiege; Vangrinsven, Emilie ULiege; Etienne, Anne-Laure ULiege et al

in Canadian Veterinary Journal = Revue Vétérinaire Canadienne (in press)

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See detailDe culpable a perseguido: Baudelaire y el proceso de Las Flores del mal
Mogollon Zapata, Juan Manuel ULiege

in Revista Historia, Teoría, Crítica (in press)

¿Cómo el poeta de Las Flores del Mal paso de ser un autor proscrito, y en consecuencia sospechoso, al autor perseguido e incomprendido que ha inmortalizado la historia literaria? ¿Cómo Baudelaire pudo ... [more ▼]

¿Cómo el poeta de Las Flores del Mal paso de ser un autor proscrito, y en consecuencia sospechoso, al autor perseguido e incomprendido que ha inmortalizado la historia literaria? ¿Cómo Baudelaire pudo desviar a su favor una circunstancia que, a primera vista, era desafortunada? Baudelaire supo utilizar el escándalo que provocó la publicación de Las Flores del Mal para promover su figura pública. Un análisis de las posturas discursivas desplegadas por Baudelaire y por sus pares durante y después del proceso nos permitirá comprender mejor la inversión que el poeta hace de su condenación al transformar la sanción penal y moral, y la exclusión a la que ésta conduce, en un signo de su grandeza y de su gloria póstuma. [less ▲]

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See detailA method for independent component graph analysis of resting-state fMRI. Brain and Behavior 2017, in press
Ribeiro de Paula, Demetrius; Ziegler, Erik; Abeyasinghe, P et al

in Brain and Behavior (in press)

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See detailComparison of Different Ion Mobility Setups using Poly(ethylene oxide) PEO Polymers: Drift Tube, TIMS and T-Wave
Haler, Jean ULiege; Massonnet, Philippe ULiege; Chirot, Fabien et al

in Journal of the American Society for Mass Spectrometry (in press)

Over the years, polymer analyses using ion mobility-mass spectrometry (IM-MS) measurements have been performed on different ion mobility spectrometry (IMS) setups. In order to be able to compare ... [more ▼]

Over the years, polymer analyses using ion mobility-mass spectrometry (IM-MS) measurements have been performed on different ion mobility spectrometry (IMS) setups. In order to be able to compare literature data taken on different IM(-MS) instruments, ion heating and ion temperature evaluations have already been explored. Nevertheless, extrapolations to other analytes are difficult and thus straightforward same-sample instrument comparisons seem to be the only reliable way to make sure that the different IM(-MS) setups do not greatly change the gas phase behavior. We used a large range of degrees of polymerization (DP) of poly(ethylene oxide) PEO homopolymers to measure IMS drift times on three different IM-MS setups: a homemade drift tube (DT), a trapped (TIMS) and a travelling wave (T-Wave) IMS setup. The drift time evolutions were followed for increasing polymer DPs (masses) and charge states and they are found to be comparable and reproducible on the three instruments. [less ▲]

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See detailHagiographie et mise en prose au XIIIe siècle : l’exemple de Barlaam et Josaphat
Lambert, Adélaïde ULiege

in Moyen Age (Le) (in press)

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See detailRotational and continuous grazing does not affect the total net ecosystem exchange of a pasture grazed by cattle but modifies CO2 exchange dynamics
Gourlez de la Motte, Louis ULiege; Mamadou, Ossenatou; Beckers, Yves ULiege et al

in Agriculture, Ecosystems & Environment (2018), 253

Grassland carbon budgets are known to be greatly dependent on management. In particular, grazing is known to directly affect CO2 exchange through consumption by plants, cattle respiration, natural ... [more ▼]

Grassland carbon budgets are known to be greatly dependent on management. In particular, grazing is known to directly affect CO2 exchange through consumption by plants, cattle respiration, natural fertilisation through excreta, and soil compaction. This study investigates the impact of two grazing methods on the net ecosystem exchange (NEE) dynamics and carbon balance, by measuring CO2 fluxes using eddy covariance in two adjacent pastures located in southern Belgium during a complete grazing season. Rotational (RG) grazing consists of an alternation of rest periods and short high stock density grazing periods. Continuous grazing (CG) consists of uninterrupted grazing with variable stocking rates. To our knowledge, this is the first study to assess the impact of these grazing methods on total net ecosystem exchange and CO2 exchange dynamics using eddy covariance. The results showed that NEE dynamics were greatly impacted by the grazing method. Following grazing events on the RG parcel, net CO2 uptake on the RG parcel was reduced compared to the CG parcel. During the following rest periods, this phenomenon progressively shifted towards a higher assimilation for the RG treatment. This behaviour was attributed to sharp biomass changes in the RG treatment and therefore sharp changes in plant photosynthetic capacity. We found that differences in gross primary productivity at high radiation were strongly correlated to differences in standing biomass. In terms of carbon budgets, no significant difference was observed between the two treatments, neither in cumulative NEE, or in terms of estimated biomass production. The results of our study suggest that we should not expect major benefits in terms of CO2 uptake from rotational grazing management when compared to continuous grazing management in intensively managed temperate pastures. [less ▲]

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See detailInfluence of urban pattern on inundation flow in floodplains of lowland rivers
Bruwier, Martin ULiege; Mustafa, Ahmed Mohamed El Saeid ULiege; Aliaga, Daniel G. et al

in Science of the Total Environment (2018), 622–623

The objective of this paper is to investigate the respective influence of various urban pattern characteristics on inundation flow. A set of 2,000 synthetic urban patterns were generated using an urban ... [more ▼]

The objective of this paper is to investigate the respective influence of various urban pattern characteristics on inundation flow. A set of 2,000 synthetic urban patterns were generated using an urban procedural model providing locations and shapes of streets and buildings over a square domain of 1 x 1 km². Steady two-dimensional hydraulic computations were performed over the 2,000 urban patterns with identical hydraulic boundary conditions. To run such a large amount of simulations, the computational efficiency of the hydraulic model was improved by using an anisotropic porosity model. This model computes on relatively coarse computational cells, but preserves information from the detailed topographic data through porosity parameters. Relationships between urban characteristics and the computed inundation water depths have been based on multiple linear regressions. Finally, a simple mechanistic model based on two district-scale porosity parameters, combining several urban characteristics, is shown to capture satisfactorily the influence of urban characteristics on inundation water depths. The findings of this study give guidelines for more flood-resilient urban planning. [less ▲]

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See detailRelic charcoal hearth soils: A neglected carbon reservoir. Case study at Marsiliana forest, Central Italy
Mastrolonardo, Giovanni ULiege; Francioso, Ornella; Certini, Giacomo

in Geoderma (2018), 315

Charcoal production in forests is one of the oldest forms of forest exploitation. The legacy of such once widespread activity is a plethora of relic charcoal hearths (RCHs1), where soil shows a thick ... [more ▼]

Charcoal production in forests is one of the oldest forms of forest exploitation. The legacy of such once widespread activity is a plethora of relic charcoal hearths (RCHs1), where soil shows a thick, black, charcoal-rich top horizon. Even where very common, such as in European forests, RCHs were rarely studied to assess their relevance as C reservoir. For this purpose, as a case study, we investigated some RCHs at Marsiliana, a typical Mediterranean oak forest from Central Italy. We found that RCHs soils, in spite of representing < 0.5% of total surface, gave a substantial contribution in terms of C, i.e. 1.1% to 4.2% of total ecosystem C, including litter, the top 30 cm of soil, deadwood, above-ground and below-ground biomass. On average, soil C content in RCHs was eight times higher than the soil outside the RCHs. The environmental significance of RCHs soils appears still greater considering that, on average, 43% of their C stock was charcoal, a form of C highly recalcitrant to mineralization. These results would stress the importance of accounting for the contribution of RCHs in terms of soil C and giving an estimation of their charcoal content in future C inventories, both as macroscopic and microscopic particles in soil. This study support the necessity of safeguarding the anthropogenic soils of RCHs as a precious C reservoir as well as a memory of past land uses. [less ▲]

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See detailDissolved Si export: Impact of increased water fluxes through soil
Ronchi, Bénédicta; Dassargues, Alain ULiege; Batelaan, Okke

in Geoderma (2018), 312

Intense deforestation over large areas is an important component of global models which aim to quantify the transfer of terrestrial siliceous material from the continent to the coast. Hence, there is a ... [more ▼]

Intense deforestation over large areas is an important component of global models which aim to quantify the transfer of terrestrial siliceous material from the continent to the coast. Hence, there is a need for improved understanding of land use impact on Si export. We present a model that simulates the kinetic dissolution of biogenic Si in a forest soil. A kinetic equation was calibrated based on leaching experiments of soil columns at constant water flux. The calibrated equation was then used to simulate the Si export from a forest soil under varying atmospheric conditions and provided realistic Si concentrations in soil water. The same model was used to simulate the impact of reduced evapotranspiration due to deforestation and consequently increased soil water fluxes on the Si export. Results showed that lower amounts of biogenic silicon dissolved and higher Si fluxes were released to the system once water flux increased. The use of the kinetic dissolution equation for biogenic Si improves our understanding and the modelling of the Si release from soils towards the hydrographic system. [less ▲]

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See detailComparison of chlordecone and NDL-PCB decontamination dynamics in growing male kids after cessation of oral exposure: Is there a potential to decrease the body levels of these pollutants by dietary supplementation of activated carbon or paraffin oil?
Lastel, Marie-Laure; Fournier, Agnès; Jurjanz, Stefan et al

in Chemosphere (2018), 193

Sixteen weaned male Alpine kids (Capra hircus) were subjected to a 21-day oral daily exposure of 0.05 mg kg 1 BW. d 1 of chlordecone (CLD) and 0.30 mg kg 1 BW. d 1 of each non-dioxin-like polychlorinated ... [more ▼]

Sixteen weaned male Alpine kids (Capra hircus) were subjected to a 21-day oral daily exposure of 0.05 mg kg 1 BW. d 1 of chlordecone (CLD) and 0.30 mg kg 1 BW. d 1 of each non-dioxin-like polychlorinated biphenyls (NDL-PCBs, congeners 28, 52, 101, 138, 153 and 180). Four kids, identified as the CONTA group, were slaughtered at the end of the exposure, while the remaining animals (n ¼ 12) were fed with specific diets for an additional 21-day decontamination period before slaughtering. Kids from the DECONTA (n ¼ 4) group were fed a control diet, while those from the AC10% and PO8% group received pellets supplemented with 10% activated carbon (AC) and 8% paraffin oil (PO), respectively. CLD and NDL-PCB levels in blood, liver, peri-renal fat and muscles from different groups were analysed to compare the decontamination dynamics of the pollutants and to determine the efficiency of AC and PO to decrease the body levels of pollutants. After the decontamination period, the CLD levels considerably decreased (more than 60%) in blood, liver, muscles and fat. Concerning NDL-PCBs, the decontamination process was much lower. Overall, CLD appeared to be less retained in kids’ organism compared with NDL-PCBs, and the decontamination dynamics of these pollutants appeared to be different because of their specific physicochemical properties and lipophilicity. Furthermore, the dietary supplementation with AC or PO did not significantly affect the decontamination dynamics. [less ▲]

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See detailCritical review of surface-enhanced Raman spectroscopy applications in the pharmaceutical field
Cailletaud, Johan ULiege; De Bleye, Charlotte ULiege; Dumont, Elodie ULiege et al

in Journal of Pharmaceutical & Biomedical Analysis (2018), 147

Surface-enhanced Raman spectroscopy (SERS) is a sensitive analytical tool used in the pharmaceutical field in recent years. SERS keeps all the advantages of classical Raman spectroscopy while being is ... [more ▼]

Surface-enhanced Raman spectroscopy (SERS) is a sensitive analytical tool used in the pharmaceutical field in recent years. SERS keeps all the advantages of classical Raman spectroscopy while being is more sensitive allowing its use for the detection and the quantification of low-dose substances contained in pharmaceutical samples. However, the analytical performance of SERS is limited due to the difficulty to implement a quantitative methodology correctly validated. Nevertheless, some studies reported the development of SERS quantitative methods especially in pharmaceutical approaches. In this context, this review presents the main concepts of the SERS technique. The different steps that need to be applied to develop a SERS quantitative method are also deeply described. The last part of the present manuscript gives a critical overview of the different SERS pharmaceutical applications that were developed for a non-exhaustive list of pharmaceutical compounds with the aim to highlights the validation criteria for each application. [less ▲]

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See detailMucoadhesive nanostructured polyelectrolytes complexes modulate the intestinal permeability of methotrexate
Boni, Fernanda Isadora; Almeida, Andreia; Lechanteur, Anna ULiege et al

in European Journal of Pharmaceutical Sciences (2018), 111

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See detailModelling built-up expansion and densification with multinomial logistic regression, cellular automata and genetic algorithm
El Saeid Mustafa, Ahmed Mohamed ULiege; Heppenstall, Alison; Omrani, Hichem et al

in Computers, Environment and Urban Systems (2018), 67

This paper presents a model to simulate built-up expansion and densification based on a combination of a non-ordered multinomial logistic regression (MLR) and cellular automata (CA). The probability for ... [more ▼]

This paper presents a model to simulate built-up expansion and densification based on a combination of a non-ordered multinomial logistic regression (MLR) and cellular automata (CA). The probability for built-up development is assessed based on (i) a set of built-up development causative factors and (ii) the land-use of neighboring cells. The model considers four built-up classes: non built-up, low-density, medium-density and high-density built-up. Unlike the most commonly used built-up/urban models which simulate built-up expansion, our approach considers expansion and the potential for densification within already built-up areas when their present density allows it. The model is built, calibrated, and validated for Wallonia region (Belgium) using cadastral data. Three 100 × 100 m raster-based built-up maps for 1990, 2000, and 2010 are developed to define one calibration interval (1990–2000) and one validation interval (2000 − 2010). The causative factors are calibrated using MLR whereas the CA neighboring effects are calibrated based on a multi-objective genetic algorithm. The calibrated model is applied to simulate the built-up pattern in 2010. The simulated map in 2010 is used to evaluate the model's performance against the actual 2010 map by means of fuzzy set theory. According to the findings, land-use policy, slope, and distance to roads are the most important determinants of the expansion process. The densification process is mainly driven by zoning, slope, distance to different roads and richness index. The results also show that the densification generally occurs where there are dense neighbors whereas areas with lower densities retain their densities over time. [less ▲]

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See detailElectric Power Network State Tracking from Multirate Measurements
Alcaide-Moreno, Boris; Fuerte-Esquivel, Claudio; Glavic, Mevludin et al

in IEEE Transactions on Instrumentation and Measurement (2018), 67

This paper proposes a novel tracking state estimator to process both fast-rate synchronized phasor and slow rate SCADA measurements. The former are assumed to be in limited number. The latter are ... [more ▼]

This paper proposes a novel tracking state estimator to process both fast-rate synchronized phasor and slow rate SCADA measurements. The former are assumed to be in limited number. The latter are exploited as and when they arrive to the control center. In order to restore observability, after each execution of the tracking state estimator, forecasted SCADA measurements are used as pseudo-measurements in the next estimation. An event detection analysis allows assessing if the system is in quasi steady-state. If so, an innovation analysis is performed to identify and eliminate erroneous SCADA measurements. The system state is computed by Hachtel’s augmented matrix method. The option of exploiting time-tagged SCADA measurements is also considered. The method is illustrated through detailed dynamic simulations of a test system evolving towards voltage collapse, with and without emergency control. [less ▲]

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See detailOccurrence of greenhouse gases in the aquifers of the Walloon Region (Belgium)
Jurado Elices, Anna ULiege; Borges, Alberto ULiege; Pujades, Estanislao ULiege et al

in Science of the Total Environment (2018)

This work aims to (1) identify the most conductive conditions for the generation of greenhouses gases (GHGs) in groundwater (e.g., hydrogeological contexts and geochemical processes) and (2) evaluate the ... [more ▼]

This work aims to (1) identify the most conductive conditions for the generation of greenhouses gases (GHGs) in groundwater (e.g., hydrogeological contexts and geochemical processes) and (2) evaluate the indirect emissions of GHGs from groundwater at a regional scale in Wallonia (Belgium). To this end, nitrous oxide (N2O), methane (CH4) and carbon dioxide (CO2) concentrations and the stable isotopes of nitrate (NO3−) and sulphate were monitored in 12 aquifers of the Walloon Region (Belgium). The concentrations of GHGs range from 0.05 µg/L to 1631.2 µg/L for N2O, 0 µg/L to 17.1 µg/L for CH4, and 1769 to 100,514 ppm for the partial pressure of CO2 (pCO2). The highest average concentrations of N2O and pCO2 are found in a chalky aquifer. The coupled use of statistical techniques and stable isotopes is a useful approach to identify the geochemical conditions that control the occurrence of GHGs in the aquifers of the Walloon Region. The accumulation of N2O is most likely due to nitrification (high concentrations of dissolved oxygen and NO3− and null concentrations of ammonium) and, to a lesser extent, initial denitrification in a few sampling locations (medium concentrations of dissolved oxygen and NO3−). The oxic character found in groundwater is not prone to the accumulation of CH4 in Walloon aquifers. Nevertheless, groundwater is oversaturated with GHGs with respect to atmospheric equilibrium (especially for N2O and pCO2); the fluxes of N2O (0.32 kg N2O-N Ha-1 y-1) and CO2 (27 kg CO2 Ha-1 y-1) from groundwater are much lower than the direct emissions of N2O from agricultural soils and fossil-fuel-related CO2 emissions. Thus, indirect GHG emissions from the aquifers of the Walloon Region are likely to be a minor contributor to atmospheric GHG emissions, but their quantification would help to better constrain the nitrogen and carbon budgets. [less ▲]

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See detailHow does STICS crop model simulate crop growth and productivity under shade conditions?
Artru, Sidonie ULiege; Dumont, Benjamin ULiege; Ruget, Francois et al

in Field Crops Research (2018), 215

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See detailHeterogeneous incidence and propagation of spreading depolarizations
Kaufmann, D; SCHOENEN, Jean ULiege

in Journal of Cerebral Blood Flow & Metabolism (2018)

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See detailEnergy harvesting from different aeroelastic instabilities of a square cylinder
Andrianne, Thomas ULiege; Aryoputro, Renar; Laurent, Philippe ULiege et al

in Journal of Wind Engineering & Industrial Aerodynamics (2018), 172

This paper presents an experimental and numerical investigation of the power extraction from the oscillations of a square beam due to aeroelastic instabilities. The energy harvesting is performed using a ... [more ▼]

This paper presents an experimental and numerical investigation of the power extraction from the oscillations of a square beam due to aeroelastic instabilities. The energy harvesting is performed using a coil-magnet arrangement connected to a variable resistance load with the target objective to auto-power a remote sensor. Two aeroelastic phenomena are investigated: Vortex Induced Vibration (VIV) and cross-flow galloping. The first instability (VIV) is analyzed on a free-standing vertical structure. A second experimental set-up is developed on a horizontal square cylinder supported by springs, free to oscillate vertically as a rigid body. In this case, both galloping and VIV interact, leading to interesting characteristics in order to harvest energy from the wind. The behavior of each electro-mechanical aeroelastic system is investigated for different reduced wind speeds and load resistances in a wind tunnel. Observed efficiencies are rather low, but large enough to power a remote sensor with an adapted measuring strategy. Both harvesting systems are then studied numerically using a wake oscillator model (for VIV) coupled to a quasi-steady model (for galloping) and an electric model (for the harvester). This mathematical model is used to extend the parametric space and to highlight the effectiveness of the high stable branch of the VIV-galloping curve to harvest energy. [less ▲]

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See detail355nm UV laser patterning and post-processing of FR4 PCB for fine pitch components integration
Dupont, François ULiege; Stoukatch, Serguei ULiege; Laurent, Philippe ULiege et al

in Optics & Lasers in Engineering (2018), 100

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See detailBrentano’s epistemology of history: inner experience and the reality of the past
Boccaccini, Federico ULiege

in Perspectives on Science (2018)

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See detailAltered Expression of MicroRNAs in Rheumatoid Arthritis
Tavasolian, F.; Abdollahi, E.; Rezaei, R. et al

in Journal of Cellular Biochemistry (2018), 119(1), 478-487

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See detailStructural and optoelectronic properties of SnO2 thin films doped by group-1A elements
Benhebal, Hadj; Benrabah, Bedhiaf; Ammari, Aek et al

in Surface Review and Letters (2018), 25

This paper presents the results of an experimental work devoted to the synthesis and the characterization of tin dioxide (SnO2 Þ thin layers doped with group-IA elements (Li, Na and K). The materials were ... [more ▼]

This paper presents the results of an experimental work devoted to the synthesis and the characterization of tin dioxide (SnO2 Þ thin layers doped with group-IA elements (Li, Na and K). The materials were synthesized by the sol–gel method and deposited by dip-coating, using tin (II) chloride dihydrate as a source of tin and absolute ethyl alcohol as solvent. Thin ¯lms prepared were characterized by several techniques including X-ray di®raction (XRD), scanning electron microscopy (SEM), infrared spectroscopy (IR), visible and ultraviolet spectroscopy and complex impedance method. The results obtained show that the materials kept their tetragonal rutile structure with preferred orientation of (101), whereas doping leads to a reduction of their energy band gap. The complex impedance analysis suggests that the di®erent processes occurring at the electrode interface are modeled by an electrical circuit not a®ected by the doping. [less ▲]

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See detailAn algorithm for computing non-concave multifractal spectra using the Sν spaces
Kleyntssens, Thomas ULiege; Esser, Céline ULiege; Nicolay, Samuel ULiege

in Communications in Nonlinear Science & Numerical Simulation (2018), 56

We present an implementation of a multifractal formalism based on the Sν spaces and show that it effectively gives the right Hölder spectrum in numerous cases. In particular, it allows to recover non ... [more ▼]

We present an implementation of a multifractal formalism based on the Sν spaces and show that it effectively gives the right Hölder spectrum in numerous cases. In particular, it allows to recover non-concave spectra, where other multifractal formalisms only lead to the concave hull of the spectra. [less ▲]

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See detailA Modal Frequency-Domain Generalised Force Matrix for the Unsteady Vortex Lattice Method
Dimitriadis, Grigorios ULiege; Giannelis, N. F.; Vio, G. A.

in Journal of Fluids & Structures (2018), 76

The unsteady Vortex Lattice method is becoming an increasingly popular aerodynamic modelling method for incompressible aeroelastic problems, such as flexible low-speed aircraft, wind turbines and flapping ... [more ▼]

The unsteady Vortex Lattice method is becoming an increasingly popular aerodynamic modelling method for incompressible aeroelastic problems, such as flexible low-speed aircraft, wind turbines and flapping flight. It leads to discrete time aeroelastic state space equations, which must be solved in a time-marching framework. Eigenvalue or singular value decompositions of the discrete time equations can be used in order to perform stability analysis but such procedures must be accompanied by model order reduction because the size of the equations is large. This work proposes a modal frequency domain implementation of the Vortex Lattice method, resulting in a modal generalised force matrix. Model order reduction is implicit in the modal approach and stability analysis can be carried out using industry-standard flutter analysis techniques, such as the p-k method. The approach is validated by comparison to wind tunnel flutter data obtained from rectangular cantilever flat plate wings of different aspect ratios and sweep angles. It is found that the aeroelastic model predictions follow the experimental trends for both flutter speed and frequency but tend to be moderately conservative. [less ▲]

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See detailReduced specificity and enhanced subjective experience of future thinking in ageing: The influence of avoidance and emotion-regulation strategies
Jumentier, Sabrina; Barsics, Catherine ULiege; Van der Linden, Martial ULiege

in Memory (2018), 26(1), 59-73

Future thinking in older adults is characterised by a lack of specificity of imagined events and by an equal or even higher subjective experience, compared to younger adults. We considered whether this ... [more ▼]

Future thinking in older adults is characterised by a lack of specificity of imagined events and by an equal or even higher subjective experience, compared to younger adults. We considered whether this lack of specificity stemmed partly from the avoidance of a somewhat disturbing future and then examined the extent to which certain types of emotion-regulation strategies, namely positive reappraisal and positive refocusing, contributed to the subjective experience of future thinking. Middle-aged and older adults completed an adapted version of the AMT, in which temporal distance and cue word valence were manipulated, thus resulting in future conditions assumed to represent varying degrees of discomfort. Results indicate that distant future and negative cues restricted both the specificity and the subjective experience of future thinking. In addition, the use of avoidance strategies predicted the nature of future thoughts in the context of a supposed uncomfortable future (i.e., a distant future induced by negative cues), although it followed quite different age-related patterns. Together with the findings that positive reappraisal and positive refocusing (to a lesser extent) contributed to the subjective experience of future thinking, this study indicates that how individuals imagine their personal future also relies on affect- and emotion-regulation strategies. [less ▲]

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See detailThe Creative Economy as a Versatile Policy Script: Exploring the Role of Competing International Organizations
Vlassis, Antonios ULiege; De Beukelaer, Christiaan

in Media, Culture & Society (2018)

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See detailApproaches to handling future use of the single-family housing stock
Berndgen-Kaiser, Andrea; Kohler, Tine; Marique, Anne-Françoise ULiege et al

in Open House International (2018), 43(03),

Single-family houses are a common form of housing in Europe. Most were built in the context of the suburbanization after World War II and are now facing challenges arising from generational changes as ... [more ▼]

Single-family houses are a common form of housing in Europe. Most were built in the context of the suburbanization after World War II and are now facing challenges arising from generational changes as well as increasing living and energy standards (Fina, Planinsek and Zakrzewski, 2009). According to the hypothesis of this paper, in several EU regions, single-family houses may face future challenges arising from oversupply and lack of adaptation to current demand. To examine this, the paper analyses the present situation and discusses the prognosis for the challenges described above regarding the three neighbouring north-western European countries Belgium, Germany, and the Netherlands, based on available data and a review of country-specific characteristics of housing markets as well as national policies. Despite an impending mismatch between demand and supply, planning policies still support the emergence of new single-family houses. The comparison of Belgium, Germany, and the Netherlands shows the growing polarization between shrinking and growing regions and central and peripheral sites apparent at different stages in the three countries. While a high rate of vacancies is already registered for some regions in Germany (Effenberger, 2015), in the Netherlands this phenomenon can only be seen near the borders and in villages within the Randstadt conurbation (Hospers et al., 2015). In Belgium also, this phenomenon is not yet widespread, but in some suburban neighbourhoods dating from the 1950’s and 1960’s more and more single-family houses are becoming more difficult to sell, indicating an emerging mismatch between supply and demand (Chambre des Notaires de la Province de Liège, 2015). This article proposes some instruments which enable municipalities to intervene in single family housing neighbourhoods which are largely dominated by private ownership. These instruments are not yet widely established in single-family housing neighbourhoods but that may become important in the future [less ▲]

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See detailFrom Ontology to Psychoanalysis. Benussi and Musatti on the Concept of Mental Reality
Boccaccini, Federico ULiege

in Meinong Studies / Meinong Studien (2018), 9

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See detailInfluence of different hydrocolloids on dough thermo-mechanical properties and in vitro starch digestibility of gluten-free steamed bread based on potato flour
Liu, Xingli ULiege; Mu, Taihua; Sun, Hongnan et al

in Food Chemistry (2018), 239

The effects of hydrocolloids (Hydroxypropylmethylcellulose (HPMC), Carboxymethylcellulose (CMC), Xanthan gum (XG), and Apple pectin (AP)) at different concentrations on dough thermo-mechanical properties ... [more ▼]

The effects of hydrocolloids (Hydroxypropylmethylcellulose (HPMC), Carboxymethylcellulose (CMC), Xanthan gum (XG), and Apple pectin (AP)) at different concentrations on dough thermo-mechanical properties and in vitro starch digestibility of gluten-free potato steamed bread were investigated. Results showed that hydrocolloids addition significantly increased the gelatinization temperature (from 52.0 to 64.2 °C) and water absorption (from 56.22 to 66.50 %) of potato dough. Moreover, hydrocolloids may be interacted with protein and starch, the density of potato protein bands was decreased by hydrocolloids addition, the reason might be that higher molecular weight complexes might be formed between proteins-hydrocolloids or proteins-proteins, thus change the protein solubility. Furthermore, steamed breads with hydrocolloids presented higher specific volume and lower hardness, and the rapidly digestible starch and estimated glycemic index were significantly decreased from 45.51 to 20.64, from 69.54 to 55.17, respectively. In conclusion, HPMC and XG could be used as improvers in the gluten-free potato steamed bread. [less ▲]

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See detailThe role of market-oriented institutions in the deployment of renewable energies: evidences from Europe
Jacqmin, Julien ULiege

in Applied Economics (2018), 50(2), 202-215

Focusing on European countries, this article investigates the link between market-oriented institutions, as measured by the Economic Freedom Index, and the production of energy from renewable sources. A ... [more ▼]

Focusing on European countries, this article investigates the link between market-oriented institutions, as measured by the Economic Freedom Index, and the production of energy from renewable sources. A dynamic panel approach shows that this correlation is positive and significant while the subcomponents of the Economic Freedom Index reveal that not all market-oriented institutions have a similar impact. Indeed, long-term price stability and freedom to trade boost the reliance on renewable energies whereas the importance given to markets rather than governments has no significant impact. [less ▲]

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See detailReden und Rufe, a neglected genre? Towards a definition of the speech captions in private tombs
Motte, Aurore ULiege

in Bulletin de l'Institut Français d'Archéologie Orientale (2018)

This paper aims at shedding light on a rather neglected corpus, the so-called ‘Reden und Rufe’. In this regard, I focus on the question of their identity as a literary genre. In seeking to define the ... [more ▼]

This paper aims at shedding light on a rather neglected corpus, the so-called ‘Reden und Rufe’. In this regard, I focus on the question of their identity as a literary genre. In seeking to define the identity of a literary genre, I first consider the structuralist approach of G. Genette and its possible applications to Ancient Egyptian texts (sections 1-2). In a second step, I apply his three criteria (modes, themes, and forms) to a workable sample of Reden und Rufe, in Old and Middle Kingdom private tombs, after having discussed the previous studies on the subject and the corpus dynamicity (section 3). I eventually offer a characterization of the Reden und Rufe, which appear to be subject to adaptations, either insertion in new kinds of ‘daily-life’ scenes or inception of a new literary genre, the harpist songs. [less ▲]

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See detailUnravelling the ‘ingredients’ of energy consumption: Exploring home-related practices in Belgium
Maréchal, Kevin ULiege; Holzemer, Laurence

in Energy Research & Social Science (2018), 39(May 2018), 19-28

To look at energy consumption through a different lens, we have developed the conceptual framework of habitual practices. The objective of the present paper is to propose an empirical application of this ... [more ▼]

To look at energy consumption through a different lens, we have developed the conceptual framework of habitual practices. The objective of the present paper is to propose an empirical application of this framework, with the aim of unravelling the constitutive ‘ingredients’ of energy-consuming practices. Therefore, we investigate whether discussing the relationship of people with their homes could help circumventing the methodological difficulties that inevitably arise when trying to approach less tangible (albeit crucial) elements such as norms and attached meanings. The empirical material comes from group conversations where participants discussed the extent to which a home has to be practical, comfortable and convivial in connection with a series of elements. The results confirm that this methodological setting generated useful insights for a finer understanding of energy-consuming practices and their underlying drivers. A related crucial finding is the role of key appliances – those with more contrasted use and attached meanings – which appear to mediate the interplay between comfort, conviviality, and practicality. A promising avenue for future research would thus be to further investigate the role of those key appliances as potential markers of wider tendencies in energy consumption and useful for designing segmentation strategies. [less ▲]

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See detailSartre in Venedig: der Mann, der in die Kälte ging
Cormann, Grégory ULiege; Viehöver, Vera ULiege

in Bulletin d'Analyse Phénoménologique (2018), 11

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See detailInteractions between Zn2+ or ZnO with TiO2 to produce an efficient photocatalytic, superhydrophilic and aesthetic glass
Léonard, Géraldine ULiege; Pàez Martinez, Carlos ULiege; Ramirez, Alfonso et al

in Journal of Photochemistry and Photobiology A : Chemistry (2018), 350

Zinc was coupled with titanium dioxide using different methods. SiO2 and Zn-SiO2 doped TiO2 films, on the one hand, and Zn doped TiO2 on the other hand, have been produced using controlled sol-gel ... [more ▼]

Zinc was coupled with titanium dioxide using different methods. SiO2 and Zn-SiO2 doped TiO2 films, on the one hand, and Zn doped TiO2 on the other hand, have been produced using controlled sol-gel processes by alcoholic, cogelation and aqueous ways. From these syntheses, films were deposited on soda lime glass. These samples were compared to ZnO samples but also to bilayer samples constituting one layer of TiO2 and one layer of ZnO. The physico-chemical properties of the films were characterized by grazing-incidence X-ray diffraction, profilometry and UV-Vis absorption analyses. The photocatalytic activity has been evaluated from the degradation of methylene blue under UV-A light, from the degradation of p-nitrophenol under visible light and from the degradation of H2O2 under halogen light (UV-A + visible light). Superhydrophilicity was evaluated from contact angle measurement after UV exposition and also from hysteresis effects. Finally, a haze measurement was performed to evaluate the impact of the coating on the aesthetic property of the coated glass. Aqueous films have better photocatalytic activity and superhydrophilicity than samples from alcoholic synthesis. The crystallization of the sample appears to be one key factor: alcoholic films required calcination to ensure the crystallization of TiO2, but the alkali migration from the glass support prevents this crystallisation, while aqueous synthesis promotes crystallized particles at low temperatures without alkali interference. It appears that the relative activity from one sample to another depends on the nature of the illumination and on the nature of the molecule to be degraded. Nevertheless, the sample with ZnO layer deposited on first TiO2 layer (ZnO 500 Alc/TiO2 100 AQ) composite is found to be the best sample, maintaining a high hydrophilicity similar to TiO2 and a good activity. [less ▲]

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See detailEffects of agricultural land use on fluvial carbon dioxide, methane and nitrous oxide concentrations in a large European river, the Meuse (Belgium)
Borges, Alberto ULiege; Darchambeau, F.; Lambert, T et al

in Science of the Total Environment (2018), 610–611

We report a data-set of CO2, CH4, and N2O concentrations in the surface waters of the Meuse river network in Belgium, obtained during four surveys covering 50 stations (summer 2013 and late winter 2013 ... [more ▼]

We report a data-set of CO2, CH4, and N2O concentrations in the surface waters of the Meuse river network in Belgium, obtained during four surveys covering 50 stations (summer 2013 and late winter 2013, 2014 and 2015), from yearly cycles in four rivers of variable size and catchment land cover, and from 111 groundwater samples. Surface waters of the Meuse river network were over-saturated in CO2, CH4, N2O with respect to atmospheric equilibrium, acting as sources of these greenhouse gases to the atmosphere, although the dissolved gases also showed marked seasonal and spatial variations. Seasonal variations were related to changes in freshwater discharge following the hydrological cycle, with highest concentrations of CO2, CH4, N2O during low water owing to a longer water residence time and lower currents (i.e. lower gas transfer velocities), both contributing to the accumulation of gases in the water column, combined with higher temperatures favourable to microbial processes. Inter-annual differences of discharge also led to differences in CH4 and N2O that were higher in years with prolonged low water periods. Spatial variations were mostly due to differences in land cover over the catchments, with systems dominated by agriculture (croplands and pastures) having higher CO2, CH4, N2O levels than forested systems. This seemed to be related to higher levels of dissolved and particulate organic matter, as well as dissolved inorganic nitrogen in agriculture dominated systems compared to forested ones. Groundwater had very low CH4 concentrations in the shallow and unconfined aquifers (mostly fractured limestones) of the Meuse basin, hence, should not contribute significantly to the high CH4 levels in surface riverine waters. Owing to high dissolved concentrations, groundwater could potentially transfer important quantities of CO2 and N2O to surface waters of the Meuse basin, although this hypothesis remains to be tested. [less ▲]

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See detailConfidentiality behind transparent doors : the European Central Bank and the EU law principle of openness
Van Cleynenbreugel, Pieter ULiege

in Maastricht Journal of European and Comparative Law (2018)

This paper questions to what extent the confidential decision-making structure maintained at the ECB is still compatible with the EU principle of openness recognised in Article 15 TFEU. To that extent, it ... [more ▼]

This paper questions to what extent the confidential decision-making structure maintained at the ECB is still compatible with the EU principle of openness recognised in Article 15 TFEU. To that extent, it analyses the different confidentiality regimes in place as well as the openness features adopted in both monetary policy and prudential supervision. It subsequently questions how those features comply with the letter and spirit of Article 15 TFEU. Aiming better to integrate existing confidentiality features with EU constitutional transparency obligations, the paper finally proposes some minor modifications to the ECB decision-making framework to align it more directly to the spirit of openness reflected in Article 15. [less ▲]

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See detailThe effect of heating rates on functional properties of wheat and potato starch-water systems
Malumba Kamba, Paul ULiege; Doran, Lynn ULiege; Danthine, Sabine ULiege et al

in LWT - Food Science and Technology = Lebensmittel-Wissenschaft & -Technologie (2018), 88

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See detailBelgium
Husson, Jean-François ULiege

in Yearbook of Muslims en Europe (2018), 9

This article reviews the position of Muslims in Belgium in 2016 in various aspects: demography, discrimination, relations with public authorities, public funding, Muslim organisations, etc.

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See detailA fully coupled hydro-mechanical model for the modeling of coalbed methane recovery
Bertrand, François ULiege; Cerfontaine, Benjamin ULiege; Collin, Frédéric ULiege

in Natural Gas science and Engineering (2018)

Most coal seams hold important quantities of methane which is recognized as a valuable energy resource. Coal reservoir is considered not conventional because methane is held adsorbed on the coal surface ... [more ▼]

Most coal seams hold important quantities of methane which is recognized as a valuable energy resource. Coal reservoir is considered not conventional because methane is held adsorbed on the coal surface. Coal is naturally fractured, it is a dual-porosity system made of matrix blocks and cleats (i.e fractures). In general, cleats are initially water saturated with the hydrostatic pressure maintaining the gas adsorbed in the coal matrix. Production of coalbed methane (CBM) first requires the mobilization of water in the cleats to reduce the reservoir pressure. Changes of coal properties during methane production are a critical issue in coalbed methane recovery. Indeed, any change of the cleat network will likely translate into modifications of the reservoir permeability. This work consists in the formulation of a consistent hydro-mechanical model for the CBM production modeling. Due to the particular structure of coal, the model is based on a dual-continuum approach to enrich the macroscale with microscale considerations. Shape factors are employed to take into account the geometry of the matrix blocks in the mass exchange between matrix and fractures. The hydro-mechanical model is fully coupled. For example, it captures the sorption-induced volumetric strain or the dependence of permeability on fracture aperture, which evolves with the stress state. The model is implemented in the finite element code Lagamine and is used for the modeling of one production well. A synthetic reservoir and then a real production case are considered. To date, attention has focused on a series of parametric analyses that can highlight the influence of the production scenario or key parameters related to the reservoir. [less ▲]

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See detailFunctional properties and health benefits of bioactive peptides derived from Spirulina : a review
Ovando, C.A.; De Carvalho, J.C.; Vinicius de Melo Pereira, G. et al

in Food Reviews International (2018)

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See detailUnderstanding urban development types and drivers in Wallonia. A multi-density approach
El Saeid Mustafa, Ahmed Mohamed ULiege; Saadi, Ismaïl ULiege; Cools, Mario ULiege et al

in International Journal of Business Intelligence and Data Mining (2018), 13(Nos. 1/2/3), 309330

In this study, urban development process in the Walloon region (Belgium) has been analysed. Two main aspects of development are quantitatively measured: the development type and the definition of the main ... [more ▼]

In this study, urban development process in the Walloon region (Belgium) has been analysed. Two main aspects of development are quantitatively measured: the development type and the definition of the main drivers of the urbanisation process. Unlike most existing studies that consider the urban development as a binary process, this research considers the urban development as a continuous process, characterised by different levels of urban density. Eight urban classes are defined based on the Belgian cadastral data for years 2000 and 2010. A multinomial logistic regression model is employed to examine the main driving forces of the different densities. Sixteen drivers were selected, including accessibility, geo-physical features, policies and socio-economic factors. Finally, the changes from the non-urban to one of the urban density classes are detected and classified into different development types. The results indicate that zoning status (political factor), slope, distance to roads, population densities and mean land price, respectively, have impact on the urbanisation process whatever maybe the density. The results also show that the impact of these factors highly varies from one density to another. [less ▲]

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See detailChronique musicale 2017
Morales, Jorge ULiege

in Seizième siècle (2018), XIV

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See detailAmbivalences littéraires de la libido sciendi
Saint-Amand, Denis ULiege

in Revue d'Histoire du XIXe Siècle (2018), 57(2018/2),

Sous la Monarchie de Juillet, Balzac revendique volontiers une perspective didactique et s’autorise des digressions encyclopédiques pour instruire son lecteur ; quelques décennies plus tard, dans Bouvard ... [more ▼]

Sous la Monarchie de Juillet, Balzac revendique volontiers une perspective didactique et s’autorise des digressions encyclopédiques pour instruire son lecteur ; quelques décennies plus tard, dans Bouvard et Pécuchet, Flaubert se moque pour sa part d’une prétention au savoir universel tenue pour naïve. Entre ces deux extrêmes, le champ littéraire français est dynamisé par une série de productions ambivalentes, oscillant entre la fascination balzacienne et la satire flaubertienne, se déployant entre reprises de genres associés à un mode d’énonciation savant (la physiologie, le dictionnaire ou le manuel) et (dé)figurations d’un personnel scientifique (en particulier le savant, présenté quelquefois comme un alter ego de l’écrivain maudit, à la fois génial et marginal). C’est sur ces zones grises de la libido sciendi littéraire, se manifestant volontiers dans la petite presse et sur des imprimés extra-livresques, que nous souhaitons nous pencher dans la présente contribution, en questionnant les mécanismes de reprise et mise à distance de formes et de figures qui se déploient dans l’univers des lettres et contribuent à nourrir l’imaginaire social de l’époque. [less ▲]

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See detailLight and oxygen induce chain scission of conjugated polymers in solution
Caubergh, Stéphane ULiege; Louis, Boris; Larsson, Per-Olof et al

in Physical Chemistry Chemical Physics [=PCCP] (2017)

Conjugated polymers have been widely studied as flexible, versatile semiconductors in organic electronics. However, the material stability is one of the problems limiting their applications. Thus ... [more ▼]

Conjugated polymers have been widely studied as flexible, versatile semiconductors in organic electronics. However, the material stability is one of the problems limiting their applications. Thus, understanding the degradation process of conjugated polymers is crucial. In this work, we monitored the chain scission of the model polymer MEH-PPV in solutions under different conditions by assessing its molecular weight using Gel permeation chromatography and optical spectral measurements. We showed that changes in the UV-VIS spectrum can be seen only when the degradation has already progressed substantially. Fluorescence spectrum was found to be almost totally insensitive to the degradation stage of the polymers. We demonstrate that chain scission in solutions happens even in the dark leading to a decrease of about 15% of the molecular weight after just one day of storage. If exposed to room-light, the chain length decreases about 10 times over one day of exposure. Using stronger light intensity or enriching the solution with oxygen accelerates the degradation process dramatically. The rate of the reaction follows approximately a square root dependence with light intensity and oxygen concentration. We conclude that some extent of polymer degradation is difficult to avoid in common laboratory practices since to prevent it one needs to work in oxygen free atmosphere in the dark. Preparation of polymer films from partially degraded solutions might lead not only to losing the connection between the molecular weight and the opto-electronic properties but also to unintentional doping of the semiconductor by products of chains scission reactions. [less ▲]

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See detailInteractions between stereotype threat, subjective aging, and memory in older adults
Marquet, Manon ULiege; Missotten, Pierre ULiege; Dardenne, Benoît ULiege et al

in Aging, Neuropsychology, and Cognition (2017)

This study examined whether the effects of stereotype threat on memory and subjective age were moderated by positive age stereotypes and self-perceptions of aging among older adults. Perceived threat as a ... [more ▼]

This study examined whether the effects of stereotype threat on memory and subjective age were moderated by positive age stereotypes and self-perceptions of aging among older adults. Perceived threat as a mechanism underlying these effects was also explored. Results showed that stereotype threat (high vs. low threat) did not affect the dependent variables. Moreover, self-perceptions of aging did not moderate the effect of stereotype threat on the dependent variables. However, for people with more positive age stereotypes, older people under high threat perceived more threat than people under low threat. This could be explained by an effect of age stereotypes in the high-threat group: the more positive age stereotypes held by participants, the more they perceived threat, which in turn decreased their memory performance and made them feel mentally older. We hypothesized that age group identity is stronger in people with more positive age stereotypes, which increase perceived threat. [less ▲]

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See detailEcology, behaviour and management of the European catfish
Cucherousset, Julien; Horky, Pavel; Slavik, Ondrej et al

in Review in Fish Biology and Fisheries (2017)

The extreme body sizes of megafishes associated with their high commercial values and recreational interests have made them highly threatened in their native range worldwide by humaninduced impacts such ... [more ▼]

The extreme body sizes of megafishes associated with their high commercial values and recreational interests have made them highly threatened in their native range worldwide by humaninduced impacts such as overexploitation. Meanwhile, some megafishes have been introduced outside of their native range. A notable example is the European catfish (Silurus glanis), one of the few siluriforms native to Eastern Europe. It is among the 20 largest freshwater fish worldwide, attaining a total length over 2.7 m and a documented mass of 130 kg. Its distinct phylogeny and extreme size imply many features that are rare among other European fish, including novel behaviours (massive aggregations, beaching), consumption of large bodied prey, fast growth rates, long lifespan, high fecundity, nest guarding and large egg sizes. The spread of the species is likely to continue due to illegal introductions, primarily for recreational angling, coupled with natural range extension associated with climate change. Here, the most recentknowledge on the current distribution and the ecology of the species are reviewed. A series of key research questions are identified that should stimulate new research on this intriguing, yet largely unknown, species and, more generally, on the ecology of freshwater invaders. [less ▲]

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See detailLa quantité contre la qualité? Les professionnels de l'emploi entre "esprit gestionnaire" et relation de service
Remy, Céline ULiege; Lavitry, Lynda

in Revue Française de Socio-Economie (2017), 19

L’article explore les liens et les zones de tension entre les politiques de mesure de la performance et la qualité de l’accompagnement à l’emploi telle qu’elle est définie dans les pratiques et discours ... [more ▼]

L’article explore les liens et les zones de tension entre les politiques de mesure de la performance et la qualité de l’accompagnement à l’emploi telle qu’elle est définie dans les pratiques et discours des agents et prestataires des services publics de l’emploi en France et en Belgique francophone. L’objectif est de démontrer que le pilotage du travail des intermédiaires de l’emploi par les indicateurs de mesure donne lieu à des pratiques, parfois clandestines, de mise en conformité avec le rendement statistique de leur activité. Mais parallèlement, les excès d’une quantification perçue comme abusive ou dangereuse pour leur ethos professionnel poussent une partie d’entre eux à agir en contradiction avec ces principes gestionnaires et ce, au nom de l’intérêt du demandeur d’emploi et de la prise en compte de la qualité des emplois, tendances que l’on décèle dans les deux pays étudiés. [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 detailGenetic parameters estimation of growth in Polled Nellore cattle via random regression models
Coutinho de Barros, Isabella; Souza Carneiro, Paulo Luiz; REIS MOTA, Rodrigo ULiege et al

in Livestock Research for Rural Development (2017), 29(12),

In genetic breeding programs, body weight is measured overtime, and is historically the main source of information from animals. Random Regression Models (RRM) have been frequently used in beef cattle ... [more ▼]

In genetic breeding programs, body weight is measured overtime, and is historically the main source of information from animals. Random Regression Models (RRM) have been frequently used in beef cattle evaluations, but can significantly contribute to genetic progress in all species of economic importance. To our knowledge, there are no scientific studies using RRM to evaluate Polled Nellore. We aimed to estimate genetic parameters by using RRM as a way to provide basis for guidelines development of growth of this breed. The models included direct genetic and maternal genetic, permanent environmental and maternal permanent environmental as random, contemporary groups as fixed and cow age at calving as covariate effects. The residual variances were modeled from homogeneous to six heterogeneous classes. The model of orders 4, 2, 2 and 2 for direct additive genetic, maternal additive genetic, maternal permanent environmental and permanent environmental had greater performance according to statistical criteria (smaller AIC and BIC values). Estimates of direct additive genetic increased over time (range 0-5,000 Kg2) and the heritability estimates were up to 0.73 along the growth curve. Maternal heritability estimates were low, with values close to zero. Genetic correlations between ages ranged from moderate (0.60) to high (0.97). Random regression models may be an alternative to describe the changes in body weight variances throughout lifetime. [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 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 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 detailThe LBTI Fizeau imager – II. Sensitivity of the PSF and the MTF to adaptive optics errors and to piston errors
Patru, F.; Esposito, S.; Puglisi, A. et al

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

We show numerical simulations with monochromatic light in the visible for the LBTI Fizeau imager, including opto-dynamical aberrations due here to adaptive optics (AO) errors and to differential piston ... [more ▼]

We show numerical simulations with monochromatic light in the visible for the LBTI Fizeau imager, including opto-dynamical aberrations due here to adaptive optics (AO) errors and to differential piston fluctuations, while other errors have been neglected. The achievable Strehl by the LBTI using two AO is close to the Strehl provided by a single standalone AO system, as long as other differential wavefront errors are mitigated. The LBTI Fizeau imager is primarily limited by the AO performance and by the differential piston/tip–tilt errors. Snapshots retain high-angular resolution and high-contrast imaging information by freezing the fringes against piston errors. Several merit functions have been critically evaluated in order to characterize point spread functions and the modulation transfer functions for high-contrast imaging applications. The LBTI Fizeau mode can provide an image quality suitable for standard science cases (i.e. a Strehl above 70 per cent) by performing both at a time: an AO correction better than ≈λ/18 RMS for both short and long exposures, and a piston correction better than ≈λ/8 RMS for long exposures or simply below the coherence length for short exposures. Such results, which can be applied to any observing wavelength, suggest that AO and piston control at the LBTI would already improve the contrast at near- and mid-infrared wavelengths. Therefore, the LBTI Fizeau imager can be used for high-contrast imaging, providing a high-Strehl regime (by both AO systems), a cophasing mode (by a fringe tracker) and a burst mode (by a fast camera) to record fringed speckles in short exposures. [less ▲]

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

in Neuroscience & Biobehavioral Reviews (2017), 83

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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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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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