References of "Scientific journals"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailRGD surface functionalization of the hydrophilic acrylic intraocular lens material to control posterior capsular opacification
Huang, Yi-Shiang ULg; Bertrand, Virginie ULg; Bozukova, Dimitriya et al

in PLoS ONE (2014), 9(12), 32

Posterior Capsular Opacification (PCO) is the capsule fibrosis developed on implanted IntraOcular Lens (IOL) by the de-differentiation of Lens Epithelial Cells (LECs) undergoing Epithelial Mesenchymal ... [more ▼]

Posterior Capsular Opacification (PCO) is the capsule fibrosis developed on implanted IntraOcular Lens (IOL) by the de-differentiation of Lens Epithelial Cells (LECs) undergoing Epithelial Mesenchymal Transition (EMT). Literature has shown that the incidence of PCO is multifactorial including the patient’s age or disease, surgical technique, and IOL design and material. Reports comparing hydrophilic and hydrophobic acrylic IOLs have shown that the former has more severe PCO. On the other hand, we have previously demonstrated that the adhesion of LECs is favored on hydrophobic compared to hydrophilic materials. By combining these two facts and contemporary knowledge in PCO development via the EMT pathway, we propose a biomimetically inspired strategy to promote LEC adhesion without de-differentiation to reduce the risk of PCO development. By surface grafting of a cell adhesion molecule (RGD peptide) onto the conventional hydrophilic acrylic IOL material, the surface-functionalized IOL can be used to reconstitute a capsule-LEC-IOL sandwich structure, which has been considered to prevent PCO formation in literature. Our results show that the innovative biomaterial improves LEC adhesion, while also exhibiting similar optical (light transmittance, optical bench) and mechanical (haptic compression force, IOL injection force) properties compared to the starting material. In addition, compared to the hydrophobic IOL material, our bioactive biomaterial exhibits similar abilities in LEC adhesion, morphology maintenance, and EMT biomarker expression, which is the crucial pathway to induce PCO. The in vitro assays suggest that this biomaterial has the potential to reduce the risk factor of PCO development. [less ▲]

Detailed reference viewed: 32 (8 ULg)
Full Text
Peer Reviewed
See detailAssessing spatio-temporal variability and trends in modelled and measured Greenland Ice Sheet albedo (2000–2013)
Alexander, P.; Tedesco, M.; Fettweis, Xavier ULg et al

in Cryosphere (The) (2014), 8

Accurate measurements and simulations of Greenland Ice Sheet (GrIS) surface albedo are essential, given the role of surface albedo in modulating the amount of absorbed solar radiation and meltwater ... [more ▼]

Accurate measurements and simulations of Greenland Ice Sheet (GrIS) surface albedo are essential, given the role of surface albedo in modulating the amount of absorbed solar radiation and meltwater production. In this study, we assess the spatio-temporal variability of GrIS albedo during June, July, and August (JJA) for the period 2000–2013. We use two remote sensing products derived from data collected by the Moderate Resolution Imaging Spectroradiometer (MODIS), as well as outputs from the Modèle Atmosphérique Régionale (MAR) regional climate model (RCM) and data from in situ automatic weather stations. Our results point to an overall consistency in spatio-temporal variability between remote sensing and RCM albedo, but reveal a difference in mean albedo of up to ~0.08 between the two remote sensing products north of 70° N. At low elevations, albedo values simulated by the RCM are positively biased with respect to remote sensing products by up to ~0.1 and exhibit low variability compared with observations. We infer that these differences are the result of a positive bias in simulated bare ice albedo. MODIS albedo, RCM outputs, and in situ observations consistently indicate a decrease in albedo of −0.03 to −0.06 per decade over the period 2003–2013 for the GrIS ablation area. Nevertheless, satellite products show a decline in JJA albedo of −0.03 to −0.04 per decade for regions within the accumulation area that is not confirmed by either the model or in situ observations. These findings appear to contradict a previous study that found an agreement between in situ and MODIS trends for individual months. The results indicate a need for further evaluation of high elevation albedo trends, a reconciliation of MODIS mean albedo at high latitudes, and the importance of accurately simulating bare ice albedo in RCMs. [less ▲]

Detailed reference viewed: 36 (1 ULg)
Full Text
Peer Reviewed
See detailReversible cross-linking of aliphatic polyamides bearing thermo- and photoresponsive cinnamoyl moieties
Tunc, Deniz ULg; Le Coz, Cédric; Alexandre, Michaël et al

in Macromolecules (2014), 47(23), 8247-8254

Detailed reference viewed: 36 (4 ULg)
Full Text
Peer Reviewed
See detailHigh plasma concentrations of sclerostin, an inhibitor of the Wnt signaling pathway in young horses affected by osteochondrosis
Serteyn, Didier ULg; Mendoza García, Luis ULg; Sandersen, Charlotte ULg et al

in Open journal of orthepedics (2014)

Osteochondrosis (OC) is a developmental disease in horses with a significant impact on the horse’s welfare and performance. The early disturbance of enchondral ossification progresses to inflammatory and ... [more ▼]

Osteochondrosis (OC) is a developmental disease in horses with a significant impact on the horse’s welfare and performance. The early disturbance of enchondral ossification progresses to inflammatory and healing process in older horses. Metabolic pathway analysis showed an obvious dysregulation of several signaling pathways related to cartilage formation and cartilage repair such as Wnt/β-catenin, Indian hedgehog and TGF-β signaling pathways. Other regulated genes appeared to be involved in high carbohydrate diet, abnormal insulin metabolism or inflammation. Sclerostin is an osteocyte-secreted soluble antagonist of the Wnt/β-catenin signaling pathway. It is crucial for osteoblast development and activity and is increased in naturally occurring lesions of equine osteochondrosis. The aim of this study is to compare the circulating sclerostin levels between OC-affected (n = 20) and healthy horses (n = 19). A significant linear regression between plasma sclerostin and age is observed especially in the healthy young horses. The mean plasma sclerostin concentration is significantly higher in young horses suffering from osteochondrosis compared to the control horses. These results reinforce the possible role of the Wnt/β-catenin signaling pathway in the OC pathogeny. The inhibition of this essential pathway could disturb the osteo-chondral differentiation. More studies are currently needed to define the eventual clinic interest of plasma sclerostin as future biomarker in bone and cartilage diseases. [less ▲]

Detailed reference viewed: 27 (4 ULg)
Full Text
Peer Reviewed
See detailConstraining the Exozodiacal Luminosity Function of Main-sequence Stars: Complete Results from the Keck Nuller Mid-infrared Surveys
Mennesson, B.; Millan-Gabet, R.; Serabyn, E. et al

in Astrophysical Journal (2014), 797

Forty-seven nearby main-sequence stars were surveyed with the Keck Interferometer mid-infrared Nulling instrument (KIN) between 2008 and 2011, searching for faint resolved emission from exozodiacal dust ... [more ▼]

Forty-seven nearby main-sequence stars were surveyed with the Keck Interferometer mid-infrared Nulling instrument (KIN) between 2008 and 2011, searching for faint resolved emission from exozodiacal dust. Observations of a subset of the sample have already been reported, focusing essentially on stars with no previously known dust. Here we extend this previous analysis to the whole KIN sample, including 22 more stars with known near- and/or far-infrared excesses. In addition to an analysis similar to that of the first paper of this series, which was restricted to the 8-9 mum spectral region, we present measurements obtained in all 10 spectral channels covering the 8-13 mum instrumental bandwidth. Based on the 8-9 mum data alone, which provide the highest signal-to-noise measurements, only one star shows a large excess imputable to dust emission (eta Crv), while four more show a significant (>3sigma) excess: beta Leo, beta UMa, zeta Lep, and gamma Oph. Overall, excesses detected by KIN are more frequent around A-type stars than later spectral types. A statistical analysis of the measurements further indicates that stars with known far-infrared (lambda >= 70 mum) excesses have higher exozodiacal emission levels than stars with no previous indication of a cold outer disk. This statistical trend is observed regardless of spectral type and points to a dynamical connection between the inner (zodi-like) and outer (Kuiper-Belt-like) dust populations. The measured levels for such stars are clustering close to the KIN detection limit of a few hundred zodis and are indeed consistent with those expected from a populat [less ▲]

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailInfluence of the protein context on the polyglutamine length-dependent elongation of amyloid fibrils
Huynen, Céline ULg; Willet, Nicolas ULg; Duwez, Anne-Sophie ULg et al

in Biochimica et Biophysica Acta-Proteins and Proteomics (2014)

Detailed reference viewed: 19 (5 ULg)
Full Text
Peer Reviewed
See detailFlow Cytometry Assessment of CD34+ Viability in Thawed Cord Blood Units: A Multi-Center Eurocord and Netcord Study
SACCARDI, RICCARDO; AZQUETA, Carmen; BALLERINI, Lara et al

in Blood (2014), 124

Detailed reference viewed: 14 (0 ULg)
Full Text
Peer Reviewed
See detailDirect route to well-defined poly(ionic liquid)s by controlled radical polymerization in water
Cordella, Daniela ULg; Kermagoret, Anthony ULg; Debuigne, Antoine ULg et al

in ACS Macro Letters (2014), 3

The precision synthesis of poly(ionic liquid)s (PILs) in water is achieved for the first time by the cobalt-mediated radical polymerization (CMRP) of N-vinyl-3-alkylimidazolium-type monomers following two ... [more ▼]

The precision synthesis of poly(ionic liquid)s (PILs) in water is achieved for the first time by the cobalt-mediated radical polymerization (CMRP) of N-vinyl-3-alkylimidazolium-type monomers following two distinct protocols. The first involves the CMRP of various 1-vinyl-3-alkylimidazolium bromides conducted in water in the presence of an alkyl–cobalt(III) complex acting as a monocomponent initiator and mediating agent. Excellent control over molar mass and dispersity is achieved at 30 °C. Polymerizations are complete in a few hours, and PIL chain-end fidelity is demonstrated up to high monomer conversions. The second route uses the commercially available bis(acetylacetonato)cobalt(II) (Co(acac)2) in conjunction with a simple hydroperoxide initiator (tert-butyl hydroperoxide) at 30, 40, and 50 °C in water, facilitating the scaling-up of the technology. Both routes prove robust and straightforward, opening new perspectives onto the tailored synthesis of PILs under mild experimental conditions in water. [less ▲]

Detailed reference viewed: 37 (7 ULg)
Full Text
Peer Reviewed
See detailEnrichment of Logging Gaps with a High Conservation Value Species (Pericopsis elata) in a Central African Moist Forest
Ouedraogo, Dakis-Yaoba ULg; Fayolle, Adeline ULg; Daïnou, Kasso ULg et al

in Forests (2014), 5(12), 3031-3047

In central Africa, most of the timber species require high light at the seedling stage for survival and growth. Forest managers face a regeneration shortage of these light-demanding timber species. To ... [more ▼]

In central Africa, most of the timber species require high light at the seedling stage for survival and growth. Forest managers face a regeneration shortage of these light-demanding timber species. To achieve long-term sustainability, there is a need for enrichment methods combining low cost and high species performance. The aim of this study was to assess the performance of Pericopsis elata seedlings in enriched logging gaps in Cameroon. Over five years; the survival and size of each seedling was monitored in 27 logging gaps that were either left without maintenance or cleared. Gaps were relatively small with an average total area of 155 m2. We found that planted seedlings of P. elata performed well in logging gaps. Even without any maintenance 61% of the planted seedlings survived after five years with an average annual diameter increment of 0.28 cm. P. elata appeared to be a good candidate species for enrichment in logging gaps. We demonstrated that the seedlings of P. elata tolerated a wide range of soil conditions but that their performance was strongly influenced by light availability (gap clearance), suggesting potentially improved performance of P. elata in high light environments such as in plantation or larger gaps. [less ▲]

Detailed reference viewed: 6 (2 ULg)
Full Text
Peer Reviewed
See detailNanocomposites based on MWCNT and polystyrene, styrene-acrylonitrile copolymer, or polymethylmethacrylate, obtained by miniemulsion polymerization
Donescu, Dan; Corobea, Mihai Cosmin; Petcu, Cristian et al

in Journal of Applied Polymer Science (2014), 131(23), 411481-10

Free radical miniemulsion polymerization of styrene (St), St/acrylonitrile 3 : 1 mixture or methylmethacrylate in the presence of multiwalled carbon nanotubes (MWCNT) was proven as a convenient way to ... [more ▼]

Free radical miniemulsion polymerization of styrene (St), St/acrylonitrile 3 : 1 mixture or methylmethacrylate in the presence of multiwalled carbon nanotubes (MWCNT) was proven as a convenient way to obtain homogenous hybrids with perspectives in associated applications like foams specialties materials. Miniemulsion polymerization was viable up to 2% wt. MWCNT to monomer, without agglomerations. The grafting on MWCNT during the polymerization occurs without the need for supplementary functionalization and the polymer grafted nanotubes showed stable dispersions in the polymer solvent. Monomer polarity affected the grafting ability during the polymerization process. The nanocomposites obtained after purification and drying were used in foaming process. MWCNT presence in the related nanocomposites decreased the pore sizes in foam-like materials (for all three different matrices). At 1 wt % MWCNT content, low density (< 0.3 g/cm3), low pore size (< 10 μm) and high cell density (>109 cell/cm3) were achieved. [less ▲]

Detailed reference viewed: 30 (2 ULg)
Full Text
Peer Reviewed
See detailFirst-line crizotinib versus chemotherapy in ALK-positive lung cancer.
Solomon, Benjamin J.; Mok, Tony; Kim, Dong-Wan et al

in The New England journal of medicine (2014), 371(23), 2167-77

BACKGROUND: The efficacy of the ALK inhibitor crizotinib as compared with standard chemotherapy as first-line treatment for advanced ALK-positive non-small-cell lung cancer (NSCLC) is unknown. METHODS: We ... [more ▼]

BACKGROUND: The efficacy of the ALK inhibitor crizotinib as compared with standard chemotherapy as first-line treatment for advanced ALK-positive non-small-cell lung cancer (NSCLC) is unknown. METHODS: We conducted an open-label, phase 3 trial comparing crizotinib with chemotherapy in 343 patients with advanced ALK-positive nonsquamous NSCLC who had received no previous systemic treatment for advanced disease. Patients were randomly assigned to receive oral crizotinib at a dose of 250 mg twice daily or to receive intravenous chemotherapy (pemetrexed, 500 mg per square meter of body-surface area, plus either cisplatin, 75 mg per square meter, or carboplatin, target area under the curve of 5 to 6 mg per milliliter per minute) every 3 weeks for up to six cycles. Crossover to crizotinib treatment after disease progression was permitted for patients receiving chemotherapy. The primary end point was progression-free survival as assessed by independent radiologic review. RESULTS: Progression-free survival was significantly longer with crizotinib than with chemotherapy (median, 10.9 months vs. 7.0 months; hazard ratio for progression or death with crizotinib, 0.45; 95% confidence interval [CI], 0.35 to 0.60; P<0.001). Objective response rates were 74% and 45%, respectively (P<0.001). Median overall survival was not reached in either group (hazard ratio for death with crizotinib, 0.82; 95% CI, 0.54 to 1.26; P=0.36); the probability of 1-year survival was 84% with crizotinib and 79% with chemotherapy. The most common adverse events with crizotinib were vision disorders, diarrhea, nausea, and edema, and the most common events with chemotherapy were nausea, fatigue, vomiting, and decreased appetite. As compared with chemotherapy, crizotinib was associated with greater reduction in lung cancer symptoms and greater improvement in quality of life. CONCLUSIONS: Crizotinib was superior to standard first-line pemetrexed-plus-platinum chemotherapy in patients with previously untreated advanced ALK-positive NSCLC. (Funded by Pfizer; PROFILE 1014 ClinicalTrials.gov number, NCT01154140.). [less ▲]

Detailed reference viewed: 18 (1 ULg)
Full Text
Peer Reviewed
See detailThe use of microorganisms of cassava retting for the production of pectinolytic enzymes
Kouhounde, Sonagnon Hermann Serge ULg; Adeoti, Kifouli; Delvigne, Frank ULg et al

in Journal of Microbiology Biotechnology and Food Sciences (2014), 4(3), 277-281

Detailed reference viewed: 16 (2 ULg)
Full Text
Peer Reviewed
See detailMixed modes in red giants: a window on stellar evolution
Mosser, B.; Benomar, O.; Belkacem, K. et al

in Astronomy and Astrophysics (2014), 572

Context. The detection of oscillations with a mixed character in subgiants and red giants allows us to probe the physical conditions in their cores. <BR /> Aims: With these mixed modes, we aim at ... [more ▼]

Context. The detection of oscillations with a mixed character in subgiants and red giants allows us to probe the physical conditions in their cores. <BR /> Aims: With these mixed modes, we aim at determining seismic markers of stellar evolution. <BR /> Methods: Kepler asteroseismic data were selected to map various evolutionary stages and stellar masses. Seismic evolutionary tracks were then drawn with the combination of the frequency and period spacings. <BR /> Results: We measured the asymptotic period spacing for 1178 stars at various evolutionary stages. This allows us to monitor stellar evolution from the main sequence to the asymptotic giant branch and draw seismic evolutionary tracks. We present clear quantified asteroseismic definitions that characterize the change in the evolutionary stages, in particular the transition from the subgiant stage to the early red giant branch, and the end of the horizontal branch. <BR /> Conclusions: The seismic information is so precise that clear conclusions can be drawn independently of evolution models. The quantitative seismic information can now be used for stellar modeling, especially for studying the energy transport in the helium-burning core or for specifying the inner properties of stars entering the red or asymptotic giant branches. Modeling will also allow us to study stars that are identified to be in the helium-subflash stage, high-mass stars either arriving or quitting the secondary clump, or stars that could be in the blue-loop stage. Table 1 is only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/572/L5">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/572/L5</A> [less ▲]

Detailed reference viewed: 6 (2 ULg)
Full Text
Peer Reviewed
See detailAlignment of quasar polarizations with large-scale structures
Hutsemekers, Damien ULg; Braibant, Lorraine ULg; Pelgrims, Vincent ULg et al

in Astronomy and Astrophysics (2014), 572

We have measured the optical linear polarization of quasars belonging to Gpc scale quasar groups at redshift z ~ 1.3. Out of 93 quasars observed, 19 are significantly polarized. We found that quasar ... [more ▼]

We have measured the optical linear polarization of quasars belonging to Gpc scale quasar groups at redshift z ~ 1.3. Out of 93 quasars observed, 19 are significantly polarized. We found that quasar polarization vectors are either parallel or perpendicular to the directions of the large-scale structures to which they belong. Statistical tests indicate that the probability that this effect can be attributed to randomly oriented polarization vectors is on the order of 1%. We also found that quasars with polarization perpendicular to the host structure preferentially have large emission line widths while objects with polarization parallel to the host structure preferentially have small emission line widths. Considering that quasar polarization is usually either parallel or perpendicular to the accretion disk axis depending on the inclination with respect to the line of sight, and that broader emission lines originate from quasars seen at higher inclinations, we conclude that quasar spin axes are likely parallel to their host large-scale structures. Based on observations made with ESO Telescopes at the La Silla Paranal Observatory under program ID 092.A-0221.Table 1 is available in electronic form at <A href="http://www.aanda.org/10.1051/0004-6361/201424631/olm">http://www.aanda.org</A> [less ▲]

Detailed reference viewed: 52 (14 ULg)
Full Text
Peer Reviewed
See detailWASP-94 A and B planets: hot-Jupiter cousins in a twin-star system
Neveu-VanMalle, M.; Queloz, D.; Anderson, D. R. et al

in Astronomy and Astrophysics (2014), 572

We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. <ASTROBJ>WASP-94A</ASTROBJ> (<ASTROBJ>2MASS 20550794-3408079</ASTROBJ>) is an F8 type star ... [more ▼]

We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. <ASTROBJ>WASP-94A</ASTROBJ> (<ASTROBJ>2MASS 20550794-3408079</ASTROBJ>) is an F8 type star hosting a transiting planet with a radius of 1.72 ± 0.06 R<SUB>Jup</SUB>, a mass of 0.452 ± 0.034 M<SUB>Jup</SUB>, and an orbital period of 3.95 days. The Rossiter-McLaughlin effect is clearly detected, and the measured projected spin-orbit angle indicates that the planet occupies a retrograde orbit. <ASTROBJ>WASP-94B</ASTROBJ> (<ASTROBJ>2MASS 20550915-3408078</ASTROBJ>) is an F9 stellar companion at an angular separation of 15'' (projected separation 2700 au), hosting a gas giant with a minimum mass of 0.618 ± 0.028 M<SUB>Jup</SUB> with a period of 2.008 days, detected by Doppler measurements. The orbital planes of the two planets are inclined relative to each other, indicating that at least one of them is inclined relative to the plane of the stellar binary. These hot Jupiters in a binary system bring new insights into the formation of close-in giant planets and the role of stellar multiplicity. The radial-velocity and photometric data used for this work are only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/572/A49">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/572/A49</A> [less ▲]

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailShort-term spectroscopic variability of Plaskett's star
Palate, Matthieu ULg; Rauw, Grégor ULg

in Astronomy and Astrophysics (2014), 572

Context. Plaskett's star (HD 47129) is a very massive O-star binary in a post Roche-lobe overflow stage. CoRoT observations of this system revealed photometric variability with a number of frequencies ... [more ▼]

Context. Plaskett's star (HD 47129) is a very massive O-star binary in a post Roche-lobe overflow stage. CoRoT observations of this system revealed photometric variability with a number of frequencies. <BR /> Aims: The aim of this paper is to characterize the variations in spectroscopy and investigate their origin. <BR /> Methods: To sample its short-term variability, HD 47129 was intensively monitored during two spectroscopic campaigns of six nights each. The spectra were disentangled and Fourier analyses were performed to determine possible periodicities and to investigate the wavelength dependence of the phase constant and the amplitude of the periodicities. <BR /> Results: Complex line profile variations are observed. Frequencies near 1.65, 0.82, and 0.37 d[SUP]-1[/SUP] are detected consistently in the He i λ 4471, He ii λ 4542, and N iii λ 4510-4518 lines. These frequencies are consistent with those of the strongest signals detected in photometry. The possibilities that these variations stem from pulsations, a recently detected magnetic field or tidal interactions are discussed. <BR /> Conclusions: Whilst all three scenarios have their strengths, none of them can currently account for all the observed properties of the line profile variations. Based on observations collected at the Observatoire de Haute Provence (OHP, France). [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailEvaluation of the durability of hydrophobic treatments on concrete architectural heritage
Lucquiaud, Vincent ULg; Courard, Luc ULg; Gérard, Olivier et al

in Restoration of Buildings and Monuments = Bauinstandsetzen und Baudenkmalpflege (2014), 20(6), 395404

The protection of historical concrete structures is a challenge for the coming years. Hydrophobic treatment may reduce the deterioration process while providing protection against water penetration ... [more ▼]

The protection of historical concrete structures is a challenge for the coming years. Hydrophobic treatment may reduce the deterioration process while providing protection against water penetration. Existing commercial products —mainly silane or siloxane in either water or solvent based formulations– were submitted to different ageing processes including UV radiation, dry-wet cycles, thermal shocks, freeze-thaw cycles, carbonation and their effectiveness has been evaluated on the basis of contact angle, vapour and chloride permeability and, capillarity water absorption. The results obtained clearly show that hydrophobic treatments display a good behaviour under the main ageing conditions. [less ▲]

Detailed reference viewed: 25 (2 ULg)
Full Text
Peer Reviewed
See detailMetacognitive components in learning to learn approaches
Frenkel, Stéphanie ULg

in International Journal of Psychology : A Biopsychosocial Approach (2014), 14

Background. Numerous students are having school difficulties linked to the way they learn. Some people speak of a “metacognitive deficit”. We refer to a “sleeping potential” instead. Be it psychologists ... [more ▼]

Background. Numerous students are having school difficulties linked to the way they learn. Some people speak of a “metacognitive deficit”. We refer to a “sleeping potential” instead. Be it psychologists, teachers or parents, all wish to develop their skills in order to help these students. This is the case in primary and secondary school. The EDUCA + project is intended to provide possible solutions. Purpose. The aim of this paper is to present a metacognitive and cognitive theory of learning to learn, which will (a) explain why numerous students are having school difficulties, and (b) predict the success of the EDUCA + project. [less ▲]

Detailed reference viewed: 65 (18 ULg)
Full Text
Peer Reviewed
See detailcompte rendu de : Luca MARTORELLI, Ps. Aurelii Augustini regulae
Rochette, Bruno ULg

in Latomus : Revue d'Etudes Latines (2014), 73(4), 1130-1132

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailFamily Members of Patients with Abdominal Aortic Aneurysms are at Increased Risk for Aneurysms: Analysis of 618 Probands and their Families from the Liege AAA Family Study.
SakalihasanN, Natzi ULg; Defraigne, Jean-Olivier ULg; Kerstenne, Marie-Ange et al

in Annals of vascular surgery (2014), 28

BACKGROUND: The objectives were to answer the following questions using a well-characterized population in Liege, Belgium: 1) what percentage of abdominal aortic aneurysm (AAA) patients have a positive ... [more ▼]

BACKGROUND: The objectives were to answer the following questions using a well-characterized population in Liege, Belgium: 1) what percentage of abdominal aortic aneurysm (AAA) patients have a positive family history for AAA, 2) what is the prevalence of AAAs among relatives of AAA patients; and 3) do familial and sporadic AAA cases differ in clinical characteristics. METHODS AND RESULTS: Unrelated AAA patients diagnosed at the Cardiovascular Surgery Department, University Hospital of Liege, Belgium, between 1999 and 2012 were invited to the study. A detailed family history was obtained in interviews and recorded using Progeny software. In the initial interview 62 (10%) of the 618 AAA patients reported a positive family history for AAA. We divided the 618 patients into two study groups: Group I: 296 AAA patients (268; 91% males) were followed up with computerized tomography combined with positron emission tomography, and Group II: 322 AAA patients (295; 92% males) whose families were invited to ultrasonography screening. Ultrasonography screening identified 24 new AAAs among 186 relatives (>/= 50 years) of 144 families yielding a prevalence of 13%. The highest prevalence (25%) was found among brothers. By combining the number of AAAs found by ultrasonography screening with those diagnosed previously the observed lifetime prevalence of AAA was estimated to be 32% in brothers. The familial AAA cases were more likely to have a ruptured AAA than the sporadic cases (8% vs. 2.4%; P<0.0001). CONCLUSIONS: The findings confirm previously found high prevalence of AAA among brothers, support genetic contribution to AAA pathogenesis and provide rationale for targeted screening of relatives of AAA patients. [less ▲]

Detailed reference viewed: 38 (12 ULg)
Full Text
Peer Reviewed
See detailEvaluation of the oxidative stability of blends of ‘Arbequina’ olive oils with other monovarietal olive oils
Mansouri, F.; Ben Moumen, A.; Houmy, N. et al

in Olivae (Official Journal of the International Olive Council) (2014), 120

Like elsewhere in the Mediterranean, the olive oil sector is one of the strategic branches of the Moroccan economy owing to its social and economic significance. This research entailed evaluation of the ... [more ▼]

Like elsewhere in the Mediterranean, the olive oil sector is one of the strategic branches of the Moroccan economy owing to its social and economic significance. This research entailed evaluation of the oxidative stability of olive oils made up of a blend of ‘Arbequina’ olive oil with ‘Arbosana’ and ‘Koroneiki’ monovarietal oils known for their high content of natural antioxidants (phenols and tocopherols) and their superior oxidative stability compared with ‘Arbequina’ oil. The monovarietal oils produced from the ‘Arbequina’, ‘Arbosana’ and ‘Koroneiki’ varieties, which have recently been introduced under intensive cultivation in the eastern region of Morocco, underwent physico–chemical characterisation to determine quality criteria, natural antioxidant content, fatty acid composition and triacylglycerol profile. The Rancimat test* was performed to assess the oxidative stability of these monovarietal oils and their three-variety blends. The oxidation tests were performed on five freshly prepared blends (A) of the three varieties – ‘Arbequina’/’Arbosana’/‘Koroneiki’ – according to the following volume ratios: A1: 60/30/10; A2: 60/20/20; A3: 60:10:30; A4: 50:25:25 and A5: 40:30:30. The test results show that blends A4 and A5 displayed the best oxidative stability, recording respective values of 72.67 h and 75.42 h. These results are comparable to those obtained for ‘Arbosana’ monovarietal oil (75.42 h), which is considered to be relatively stable. Hence, blending is an excellent tool for enhancing oils produced from varieties which, despite their excellent initial quality and their organoleptic attributes, are handicapped by their poor stability, as is the case of ‘Arbequina’ oil. [less ▲]

Detailed reference viewed: 7 (0 ULg)
Full Text
Peer Reviewed
See detailPolysaccharide-coated PCL nanofibers for wound dressing applications
Croisier, Florence ULg; Atanasova, Ganka; Poumay, Yves et al

in Advanced Healthcare Materials (2014), 3(12), 2032-2039

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

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

Detailed reference viewed: 44 (7 ULg)
Full Text
Peer Reviewed
See detailA study of one-dimensional transport of Bose-Einstein condensates using exterior complex scaling
Dujardin, Julien ULg; Saenz, Alejandro; Schlagheck, Peter ULg

in Applied Physics B : Lasers & Optics (2014), 117(3), 765

We numerically investigate the one-dimensional transport of Bose-Einstein condensates in the context of guided atom lasers using a mean-field description of the condensate in terms of a spatially ... [more ▼]

We numerically investigate the one-dimensional transport of Bose-Einstein condensates in the context of guided atom lasers using a mean-field description of the condensate in terms of a spatially discretized Gross-Pitaevskii equation. We specifically consider a waveguide configuration in which spatial inhomogeneities and nonvanishing atom-atom interactions are restricted to a spatially localized scattering region of finite extent. We show how the method of smooth exterior complex scaling can be implemented for this particular onfiguration in order to efficiently absorb the outgoing flux within the waveguide. A numerical comparison with the introduction of a complex absorbing potential as well as with the analytically exact elimination of the dynamics of the free non-interacting motion outside the scattering region, giving rise to transparent boundary conditions, clearly confirms the accuracy and efficiency of the smooth exterior complex scaling method. [less ▲]

Detailed reference viewed: 76 (30 ULg)
Full Text
Peer Reviewed
See detailGérer les différences : une préoccupation commune
Blondin, Christiane ULg; Cornet, Jacques; Delvaux, Bernard

in Education et formation (2014), e-302

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailLes Phénomènes
Dewalque, Arnaud ULg; Seron, Denis ULg

in Philosophie (2014), 124

Le présent numéro thématique explore quelques aspects de la question de la phénoménalité. Les trois premiers textes portent sur les phénomènes sensibles: sur le nombre des sens (Brentano), le traitement ... [more ▼]

Le présent numéro thématique explore quelques aspects de la question de la phénoménalité. Les trois premiers textes portent sur les phénomènes sensibles: sur le nombre des sens (Brentano), le traitement des phénomènes sensibles dans la phénoménologie de Husserl (Stumpf) et l'héritage du phénoménisme de Mach dans le néokantisme de Natorp (Palette). Les contributions suivantes s’inscrivent dans le cadre du débat contemporain sur la conscience phénoménale. Elles discutent la pertinence et les difficultés d’une approche phénoménologique du monde (Uriah Kriegel), de l’intentionnalité (Dan Zahavi) et du mental (Dewalque & Seron). [less ▲]

Detailed reference viewed: 30 (1 ULg)
Full Text
See detailTravail de différentes disciplines collectives sous forme de circuit
Masrouki, Monia; Cloes, Marc ULg

in Revue de l'Education Physique (2014), 54(4), 101-110

In Wallonia, when teaching team sports, secondary school level physical education teachers generally use a traditional (technicist) and single discipline approach. Moreover, teachers meet some ... [more ▼]

In Wallonia, when teaching team sports, secondary school level physical education teachers generally use a traditional (technicist) and single discipline approach. Moreover, teachers meet some difficulties to apply the accountability and literacy principles. In this paper, authors present a practical example of PE lesson demonstrating that it is possible to change teaching. [less ▲]

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailGrey-box identification of a non-linear solar array structure using cubic splines
Noël, Jean-Philippe ULg; Kerschen, Gaëtan ULg; Foltête, Emmanuel et al

in International Journal of Non-Linear Mechanics (2014), 67

Most identification methods in non-linear structural dynamics assume in advance a mathematical model of the non-linearities. This is however possible in specific situations only, since non-linear effects ... [more ▼]

Most identification methods in non-linear structural dynamics assume in advance a mathematical model of the non-linearities. This is however possible in specific situations only, since non-linear effects may be caused by numerous phenomena and a priori knowledge is generally limited. The present paper investigates the usefulness of piecewise third-order polynomials, termed cubic splines, to identify the complex non-linear dynamics of solar arrays in their stowed configuration. The estimation of the model parameters is achieved using the frequency-domain non-linear subspace identification (FNSI) method. A distinct advantage of the FNSI approach is its capability to calculate accurately a large number of parameters, while maintaining an acceptable computational burden. This makes tractable the use of cubic splines to represent non-linearity in real-life mechanical systems, as the dimensionality of the inverse problem is known to increase dramatically in this case. The experimental structure of interest consists of two parallel aluminium plates assembled with bolted connections. This application is challenging because of the existence of impacts between the two plates at high excitation amplitude, and of the activation of complicated stiffness and damping mechanisms within the bolted connections. [less ▲]

Detailed reference viewed: 29 (3 ULg)
Full Text
See detailCracs, Neets... and Agency, le vocabulaire d’un autre monde... ou pas?
Vandoorne, Chantal ULg

in Education Santé (2014), (306), 7-8

Detailed reference viewed: 26 (0 ULg)
Full Text
See detailPlasma riche en plaquettes et tendinopathies
KAUX, Jean-François ULg; Crielaard, Jean-Michel ULg

in Ortho-Rhumato (2014), 12(6), 35-39

Certaines tendinopathies présentent une évolution désespérément chronique malgré l’instauration d’un traitement conservateur bien conduit. Diverses études soulignent les propriétés réparatrices des ... [more ▼]

Certaines tendinopathies présentent une évolution désespérément chronique malgré l’instauration d’un traitement conservateur bien conduit. Diverses études soulignent les propriétés réparatrices des plaquettes qui pourraient accélérer la cicatrisation de différents tissus. Le plasma riche en plaquettes (platelet-rich plasma ou PRP) représenterait une thérapeutique d’avenir. Les plaquettes libéraient, lors de leur dégranulation, divers facteurs de croissance. Ceux-ci favoriseraient la cicatrisation tendineuse. Actuellement, les effets du PRP restent toujours discutés voire controversés : les résultats cliniques sont parfois contradictoires même si son efficacité in vitro et sur animal apparait plus franche. Cette variabilité pourrait s’expliquer par l’absence de consensus relatif au mode de préparation du PRP, à la concentration plaquettaire, à la présence ou non de leucocytes, à la technique d’infiltration et au protocole post-infiltration. [less ▲]

Detailed reference viewed: 29 (8 ULg)
Full Text
Peer Reviewed
See detailGouvernementalité, subjectivité et vérité
Thirion, Nicolas ULg

in Acta Fabula : Revue des Parutions en Théorie Littéraire (2014), 15(10),

Detailed reference viewed: 21 (5 ULg)
Full Text
Peer Reviewed
See detailUn blog plutôt qu’un Word ? Retour d’expérience de l’insertion d’un cours en ligne dans un programme de formation d’enseignants du supérieur.
Jérôme, Françoise ULg; Verpoorten, Dominique ULg

in Education & Formation (2014), e-302

En 2012-2013, le CAPAES (Certificat d’Aptitude Pédagogique Approprié à l’Enseignement Supérieur) de l’Université de Liège a incorporé pour la première fois à son programme un cours entièrement en ligne ... [more ▼]

En 2012-2013, le CAPAES (Certificat d’Aptitude Pédagogique Approprié à l’Enseignement Supérieur) de l’Université de Liège a incorporé pour la première fois à son programme un cours entièrement en ligne. L’article en expose les motivations sous-jacentes, présente les outils utilisés et analyse la réception du dispositif par les étudiants. Les données récoltées font apparaitre : a) la familiarité antérieure restreinte des enseignants avec les deux outils exploités dans le cours (une plate-forme eLearning traditionnelle et un blog comme représentant du Web 2.0), b) la capacité, en dépit de cette familiarité limitée, de faire bon usage des deux outils en tant qu’apprenant, c) une satisfaction générale pour le cours en ligne mais faiblement liée à la découverte des deux outils et à la prise de conscience, en tant qu’enseignant, de leur potentiel pédagogique. (L'article fournit en annexe le questionnaire complet utilisé pour recueillir le feed-back des enseignants ayant terminé le cours en ligne). [less ▲]

Detailed reference viewed: 31 (6 ULg)
Full Text
Peer Reviewed
See detailDivision ethnoraciale et pénalisation
Vanneste, Charlotte ULg

in Revue de l'Institut de Sociologie de l'Université Libre de Bruxelles (2014), volume 2013

Detailed reference viewed: 20 (2 ULg)
Full Text
Peer Reviewed
See detailLes fondamentaux de la valeur des entreprises en Europe
Lambert, Marie ULg; Lenglois, Julien; Streel, Alexandre ULg et al

in Comptabilité et Fiscalité Pratiques (2014)

Detailed reference viewed: 19 (5 ULg)
Full Text
Peer Reviewed
See detailLes solutions humaines. Victor Serge dans le XXe siècle
Cavazzini, Andrea ULg

in Cahiers du GRM (2014)

Detailed reference viewed: 5 (0 ULg)
Full Text
Peer Reviewed
See detailEchos en série. Formes et enjeux de la réplique dans "The Wire"
Belloi, Livio ULg

in TV/Series (2014), 6

Vaste « roman visuel » (David Simon), la série The Wire (HBO, 2002-2008) se donne pour ambition d’explorer sous toutes ses coutures la ville américaine de Baltimore. En termes de construction narrative ... [more ▼]

Vaste « roman visuel » (David Simon), la série The Wire (HBO, 2002-2008) se donne pour ambition d’explorer sous toutes ses coutures la ville américaine de Baltimore. En termes de construction narrative, les soixante épisodes composant cette série s’ordonnent à un ample mouvement cyclique, au terme duquel rien, en définitive, n’a vraiment changé : The Wire se clôture en effet par un cinglant retour à la case départ. Au sein de cette structure en boucle, les phénomènes d’écho et de reprise foisonnent et affectent la série sous de multiples aspects. Le présent article s’emploie à dégager divers effets d’écho en tant qu’ils se jouent dans la sphère du langage. Il s’agit plus précisément de porter au jour un curieux micro- phénomène selon lequel, tout au long de la série, certains personnages sont amenés à prononcer les mêmes lignes de dialogue, tantôt de manière délibérée, tantôt de manière inconsciente. Après avoir débusqué la première occurrence de ce phénomène dans la trame complexe de The Wire, nous nous attachons à examiner quelques cas de figure précis, dans une perspective qui se veut d’abord morphologique. Chemin faisant, une notion s’impose : celle de réplique, que The Wire, comme objet de langage, nous invite à entendre dans un fécond double sens – ligne de dialogue et fait d’itération. [less ▲]

Detailed reference viewed: 42 (3 ULg)
Full Text
Peer Reviewed
See detailLes porcheries : réservoirs des Culicoides (Diptera: Ceratopogonidae), vecteurs des virus de la Maladie de la Langue bleue et de Schmallenberg ?
Zimmer, Jean-Yves ULg; Saegerman, Claude ULg; Martinelle, Ludovic ULg et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2014), 18(4), 480-487

La fièvre catarrhale ovine (FCO) est une arbovirose qui affecte les ruminants domestiques et sauvages. Depuis sa récente apparition en Europe du Nord, cette épizootie virale a engendré des pertes ... [more ▼]

La fièvre catarrhale ovine (FCO) est une arbovirose qui affecte les ruminants domestiques et sauvages. Depuis sa récente apparition en Europe du Nord, cette épizootie virale a engendré des pertes économiques considérables. Les vecteurs biologiques du virus de la FCO sont des moucherons piqueurs appartenant au genre Culicoides (Diptera : Ceratopogonidae). Plusieurs campagnes de piégeage lumineux de ces moucherons adultes ont été réalisées précédemment en Belgique au sein d’exploitations bovines et ovines, mais aucune à l’intérieur des exploitations porcines. Cette étude vise donc à évaluer, au moyen de pièges lumineux, les populations de culicoïdes éventuellement présentes à l’intérieur de deux porcheries belges au cours de l’automne et de l’hiver 2008. La présence des espèces (potentiellement) vectrices du genre Culicoides a ainsi été mise en évidence à l’intérieur de ces bâtiments durant l’automne : 8 et 749 spécimens appartenant à 2 et 7 espèces ont ainsi respectivement été piégés au sein des porcheries, avec une majorité de femelles du complexe Obsoletus. L’ouverture des bâtiments semble fortement influencer leur présence. L’observation du statut alimentaire des femelles laisse supposer que ces moucherons sont susceptibles de se nourrir ou de pondre au sein des porcheries, même si le sang de porc n’a pas pu être identifié dans l’abdomen des femelles gorgées et que le lisier n’a pas révélé la présence de larves. Les porcs pourraient ainsi intervenir dans le maintien des populations d’espèces potentiellement vectrices du virus de la FCO, ou du nouveau virus dénommé virus Schmallenberg. [less ▲]

Detailed reference viewed: 50 (17 ULg)
Full Text
Peer Reviewed
See detailThe sentence repetition task: A powerful diagnostic tool for French children with specific language impairment
Leclercq, Anne-Lise ULg; Quémart, Pauline; Magis, David ULg et al

in Research in Developmental Disabilities (2014), 35

This study assesses the diagnostic accuracy and construct validity of a sentence repetition task that is commonly used for the identification of French children with specific language impairment (SLI ... [more ▼]

This study assesses the diagnostic accuracy and construct validity of a sentence repetition task that is commonly used for the identification of French children with specific language impairment (SLI). Thirty-four school-aged children with a confirmed, diagnostically based diagnosis of SLI, and 34 control children matched on age and nonverbal abilities performed the sentence repetition task. Two general scoring measures took into account the verbatim repetition of the sentence and the number of words accurately repeated. Moreover, five other scoring measures were applied to their answers in order to separately take into account their respect of lexical items, functional items, syntax, verb morphology, and the general meaning of the sentence. Results show good to high levels of sensitivity and specificity at the three cut-off points for all scoring measures. A principal component analysis revealed two factors. Scoring measures for the respect of functional words, syntax and verb morphology provided the largest loadings to the first factor, while scoring measures for the respect of lexical words and general semantics provided the largest loadings to the second factor. Sentence repetition appears to be a valuable tool to identify SLI in French children, and the ability to repeat sentences correctly is supported by two factors: a morphosyntactic factor and a lexical factor. [less ▲]

Detailed reference viewed: 66 (15 ULg)
Full Text
Peer Reviewed
See detailThe PAX2-null immunophenotype defines multiple lineages with common expression signatures in benign and neoplastic oviductal epithelium.
Ning, Gang; Bijron, Jonathan G.; Yamamoto, Yusuke et al

in The Journal of pathology (2014), 234

The oviducts contain high-grade serous cancer (HGSC) precursors (serous tubal intraepithelial neoplasia or STINs), which are gamma-H2AXp - and TP53 mutation-positive. Although they express wild-type p53 ... [more ▼]

The oviducts contain high-grade serous cancer (HGSC) precursors (serous tubal intraepithelial neoplasia or STINs), which are gamma-H2AXp - and TP53 mutation-positive. Although they express wild-type p53, secretory cell outgrowths (SCOUTs) are associated with older age and serous cancer; moreover, both STINs and SCOUTs share a loss of PAX2 expression (PAX2n ). We evaluated PAX2 expression in proliferating adult and embryonic oviductal cells, normal mucosa, SCOUTs, Walthard cell nests (WCNs), STINs, and HGSCs, and the expression of genes chosen empirically or from SCOUT expression arrays. Clones generated in vitro from embryonic gynaecological tract and adult Fallopian tube were Krt7p /PAX2n /EZH2p and underwent ciliated (PAX2n /EZH2n /FOXJ1p ) and basal (Krt7n /EZH2n /Krt5p ) differentiation. Similarly, non-ciliated cells in normal mucosa were PAX2p but became PAX2n in multi-layered epithelium undergoing ciliated or basal (WCN) cell differentiation. PAX2n SCOUTs fell into two groups: type 1 were secretory or secretory/ciliated with a 'tubal' phenotype and were ALDH1n and beta-cateninmem (membraneous only). Type 2 displayed a columnar to pseudostratified (endometrioid) phenotype, with an EZH2p , ALDH1p , beta-cateninnc (nuclear and cytoplasmic), stathminp , LEF1p , RCN1p , and RUNX2p expression signature. STINs and HGSCs shared the type 1 immunophenotype of PAX2n , ALDH1n , beta-cateninmem , but highly expressed EZH2p , LEF1p , RCN1p , and stathminp . This study, for the first time, links PAX2n with proliferating fetal and adult oviductal cells undergoing basal and ciliated differentiation and shows that this expression state is maintained in SCOUTs, STINs, and HGSCs. All three entities can demonstrate a consistent perturbation of genes involved in potential tumour suppressor gene silencing (EZH2), transcriptional regulation (LEF1), regulation of differentiation (RUNX2), calcium binding (RCN1), and oncogenesis (stathmin). This shared expression signature between benign and neoplastic entities links normal progenitor cell expansion to abnormal and neoplastic outgrowth in the oviduct and exposes a common pathway that could be a target for early prevention. Copyright (c) 2014 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd. [less ▲]

Detailed reference viewed: 25 (2 ULg)
Full Text
Peer Reviewed
See detailImpact of gender difference in hospital outcomes following percutaneous coronary intervention. Results of the Belgian Working Group on Interventional Cardiology (BWGIC) registry
LEMPEREUR, Mathieu ULg; Magne, Julien; Cornelis, Kristoff et al

in EuroIntervention : Journal of EuroPCR in Collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology (2014)

Aims: To determine whether there are gender-based differences in in-hospital outcomes among patients undergoing percutaneous coronary intervention (PCI). Methods and results: We studied a large cohort ... [more ▼]

Aims: To determine whether there are gender-based differences in in-hospital outcomes among patients undergoing percutaneous coronary intervention (PCI). Methods and results: We studied a large cohort using clinical data from a registry of 130,985 PCI procedures in Belgium, from January 2006 to February 2011. Compared to males, females were significantly older (70.3 vs. 64.8 years), and were more frequently diabetic or hypertensive. Men smoked more and more frequently had previous myocardial infarction (MI), previous PCI or previous coronary artery bypass graft (CABG) surgery. Coronary artery disease (CAD) was less severe in women, and PCI to the left anterior descending artery was more common in female patients. Unadjusted in-hospital mortality rates were higher in females versus males (2.5% for women and 1.6% for men, p<0.0001). After multivariable analysis, female gender remained an independent predictor of mortality (odds ratio 1.35, 95% CI: 1.22-1.49, p<0.0001). Conclusions: Gender-based differences in hospital mortality rates after PCI were observed in this large registry. Female sex remained an independent predictor of mortality after multivariable adjustment. [less ▲]

Detailed reference viewed: 36 (4 ULg)
Full Text
Peer Reviewed
See detailEmpirical modelling of the bifurcation behaviour of a bridge deck undergoing across-wind galloping
Andrianne, Thomas ULg; Dimitriadis, Grigorios ULg

in Journal of Wind Engineering & Industrial Aerodynamics (2014), 135

This work presents an empirical model capable to describe the galloping bifurcation behaviour of a bridge deck. It is based on a general polynomial form proposed by Novak, which we limit to the 5th order ... [more ▼]

This work presents an empirical model capable to describe the galloping bifurcation behaviour of a bridge deck. It is based on a general polynomial form proposed by Novak, which we limit to the 5th order. The advantage of choosing this function for modelling the vertical force coefficient is that asymmetry of the even terms is enforced in order to reproduce the sub-critical aeroelastic behaviour of the bridge deck. The coefficients of the polynomial are identified from several pairs of displacement amplitudes and the corresponding airspeeds, measured in a wind tunnel during dynamic tests on the sectional bridge model. The identification is carried out using a first order harmonic balance technique. A stability analysis is presented in order to highlight the need of such a model to catch the complete bifurcation behaviour of the system. The resulting force coefficient of this full order model is compared to the well known models of Parkinson and Novak. Finally, the concept universal curve is used in order to discuss the galloping responses of square and rectangular cylinders, in comparison with the one of the bridge deck. [less ▲]

Detailed reference viewed: 37 (20 ULg)
Full Text
See detailVitrification, an efficient cryopreservation procedure but still rising some debates
Vanderzwalmen, Pierre; Ectors, Fabien ULg; Stecher, Astrid et al

in Current Trends in Clinical Embryology (2014), 1(1), 34-45

Detailed reference viewed: 21 (15 ULg)
Full Text
Peer Reviewed
See detailEnfants en situation de vulnérabilité médico-psycho-sociale repérés par la médecine scolaire : les oubliés du réseau de soins ?
Noirhomme-Renard, Florence ULg; Bullens, Quentin ULg; Malchair, Alain ULg et al

in Revue Médicale de Liège (2014), 69(12),

Les besoins actuels de santé des enfants sortent largement du cadre biomédical. La prise en compte des déterminants sociaux de la santé dans la surveillance des enfants offre au médecin scolaire un poste ... [more ▼]

Les besoins actuels de santé des enfants sortent largement du cadre biomédical. La prise en compte des déterminants sociaux de la santé dans la surveillance des enfants offre au médecin scolaire un poste « vigie » pour le repérage d’enfants en situation de vulnérabilité, qui le conduit à la nécessité d’un réel « travail en réseau » pour concourir au développement harmonieux de l’enfant. [less ▲]

Detailed reference viewed: 107 (39 ULg)
Full Text
See detailDe Christophe Colomb à Barack Obama - une chronologie des musiques afro-américaines
Sacré, Robert ULg

in ABS Magazine (2014), (44), 15

Compte rendu d'un ouvrage de Jean Paul Levet , tome 1 ( sous titré Une chronologie des musiques afro-américaines)

Detailed reference viewed: 15 (1 ULg)
Full Text
Peer Reviewed
See detailLa vernacularización de la conservación en los territorios indígenas amazónicos. Un análisis de la revalorización ancestral indígena en dos proyectos de ecoturismo comunitario en áreas protegidas
Marquez Guerra, José Francisco ULg

in Boletín de Antropología Universidad de Antioquia (2014), 29(48), 92-118

Bolivia adopted the international regime for the conservation of biodiversity in the 90s, while cultural diversity was implementing policies for the indigenous peoples of the lowlands. This two-way ... [more ▼]

Bolivia adopted the international regime for the conservation of biodiversity in the 90s, while cultural diversity was implementing policies for the indigenous peoples of the lowlands. This two-way process was crystallized in a new form of state intervention in the Amazon Region through the implementation of Protected Areas on previously inhabited territories. Based on protection criteria of "nature" and revitalization of the ancient cultures, management areas support sustainable economic development initiative for the locals. From two experiences of indigenous community tourism projects in protected areas, we use the concept of vernacularization of norms to understand how, through these dispositive of generating local income with "low environmental impact", the principles of conservation and sustainable development try to be translated into life forms of three Amazonian people, the Quechua-Tacana Uchupiamonas San Jose, Tsimane 'and Mosetene Pilon Lajas. [less ▲]

Detailed reference viewed: 18 (7 ULg)
Full Text
Peer Reviewed
See detailTermite mound identification through aerial photographic interpretation in Lubumbashi , Democratic Republic of the Congo : methodology evaluation
Vranken, Isabelle ULg; Adam, Marielle; Mujinya Baziraké, Basile et al

in Tropical Conservation Science (2014), 7(4), 733-746

Les termites des régions tropicales sont d’une importance critique pour le fonctionnement et les services écosystémiques dans les régions de forêt claire et de savane. Les termitières peuvent également ... [more ▼]

Les termites des régions tropicales sont d’une importance critique pour le fonctionnement et les services écosystémiques dans les régions de forêt claire et de savane. Les termitières peuvent également être utilisées comme engrais et bio-indicateurs de perturbations anthropiques telles que l’agriculture ou la production de charbon. La télédétection peut contribuer à identifier et caractériser la densité et la distribution des termitières à moindres frais. Afin de tester son efficacité, les termitières ont été identifiées sur le terrain et comparées avec les résultats d’interprétation de photographies aériennes Google Earth en libre accès. Cette comparaison a été appliquée sur 17 sites dans l’hinterland de la ville minière de Lubumbashi, Katanga, République Démocratique du Congo, confrontée à une croissance élevée de population, à l’insécurité alimentaire ainsi que d’intenses fragmentation et dégradation de la couverture originelle de forêt claire (Miombo). Les influences de la hauteur et du diamètre des termitières ainsi que de la période d’acquisition de l’image (année et saison) ont été testées statistiquement. Le nombre de termitières observées sur le terrain est généralement surestimé sur l’image. La hauteur et la saison des pluies en favorisent l’identification correcte, tandis que la distribution spatiale n’est pas significativement influencée par les erreurs d’identification. Un modèle correctif a été défini et sa pertinence statistiquement vérifiée. L’identification des termitières via Google Earth s’avère efficace tant que la position précise de chaque termitière n’est pas requise. Cette approche constitue une réduction considérable des coûts de missions de terrain liées aux études sur les termitières. [less ▲]

Detailed reference viewed: 21 (4 ULg)
Full Text
Peer Reviewed
See detailSpecialist nurse in Europe: education, regulation and role
Dury, Cécile ULg

in International Nursing Review (2014), 61(4), 454-462

Background: The concept of a ‘specialist nurse’ has existed for many years and related education programmes are proliferating. However, while literature clearly outlines the roles and practice of ... [more ▼]

Background: The concept of a ‘specialist nurse’ has existed for many years and related education programmes are proliferating. However, while literature clearly outlines the roles and practice of registered nurses and advanced practice nurses, those of specialist nurses remain unclear and nursing specializations across Europe need clarifying. Aim: This pilot study aimed to explore the competencies, education requirements and regulation of specialist nurses in Europe. Design: A descriptive cross-sectional survey. Methods: An online questionnaire named ‘Specialist nurse and specialization in Europe’ was sent to 550 members of the European Federation of Nurse Educators and ten members of the European Specialist Nurses Organizations. Snowball sampling was then used to build a convenience sample of nurse educators, clinical nurses and specialist nurses, national nursing association members, and chief nursing officers from all European countries. Besides quantitative aspects, responses to open-ended questions were analysed using a qualitative content analysis process. Results: A total of 77 experts from 29 European countries responded to the questionnaire. Findings highlighted variations in titles, levels and length of education, certification, regulation and scope of practice for specialized nurses in Europe. Analysis of the promoted competencies revealed dominant clinical and technical aspects of the role with a high level of knowledge.Conclusions: The study emphasized the need to improve standards for education, certification and regulation for specialist nurses. Interpretation of the role and competencies is diverse with a weak presence of health policy that would enhance and develop the specialities. Implications for nursing and health policy: To address the current lack of provisions for automatic recognition of specialist nurses, common training frameworks corresponding to the relevant level of the European Qualifications Framework should promote lifelong learning and mobility, and enhance levels of health care and patient safety. [less ▲]

Detailed reference viewed: 4 (0 ULg)
Full Text
Peer Reviewed
See detailAdolescent Risk Behaviours and Protective Factors Against Peer Influence
Cattelino, Elena; Glowacz, Fabienne ULg; Born, Michel ULg et al

in Journal of Adolescence (2014), 37(8), 1353-1362

This study examined the relationships between protective factors and involvement in risk behaviour of Italian adolescents with friends involved in risk. Protective factors were drawn from models of peers ... [more ▼]

This study examined the relationships between protective factors and involvement in risk behaviour of Italian adolescents with friends involved in risk. Protective factors were drawn from models of peers and from individual skills (perceived regulatory self-efficacy, intolerant attitudes about deviance) and orientation (to health, school, religion). The data are from two waves, 1 year apart, of a questionnaire survey of adolescents in northwestern Italy. Participants were 908 adolescents (42% boys) ages 14–16 years. Results of a hierarchical regression revealed that religiosity is a protective factor and that friends’ models for conventional behaviours and positive attitude about health can mitigate the influence of deviant friends on adolescent risk behaviour 1 year later, even after controlling for prior levels of risk behaviour. Possible implications of this study suggest the importance of implementing preventive interventions by involving the peer group, especially at about 16 years, and working with heterogeneous (deviant and nondeviant) groups. [less ▲]

Detailed reference viewed: 29 (2 ULg)
Full Text
Peer Reviewed
See detailExperimental validation of a thermal model of a LOx flooded ball bearing
Servais, Christophe ULg; Bozet, Jean-Luc ULg; Kreit, Patrick ULg et al

in Tribology International (2014), 80

Ball bearings of turbopumps of rocket engines work in very singular conditions; they are flooded into liquid oxygen or liquid hydrogen. Therefore, the use of any conventional lubricants (oil or grease) is ... [more ▼]

Ball bearings of turbopumps of rocket engines work in very singular conditions; they are flooded into liquid oxygen or liquid hydrogen. Therefore, the use of any conventional lubricants (oil or grease) is prescribed. Although cryogenic fluids can cool this kind of ball bearing, they cannot separate the surfaces in contact. As a result, there is a significant increase in frictional power losses. This paper presents tests performed on a cryotechnic ball bearing flooded in liquid oxygen. The test results showed that beyond a critical loading of the bearing, a sudden increase in temperature occurred. A thermal model is also put forward, in order to understand and anticipate especially the thermal instability described above. [less ▲]

Detailed reference viewed: 50 (12 ULg)
Full Text
Peer Reviewed
See detailDe beklemtoning van samenstellingen in de tussentaal van Franstalige leerders van het Nederlands uit het immersie- en niet-immersieonderwijs
Bui-Anh, Vu ULg; Jouniaux, Anthony; Hiligsmann, Philippe et al

in n/f (2014), 12

Detailed reference viewed: 38 (8 ULg)
Full Text
See detailLa Garde civique liégeoise au XIXème siècle
Genin, Vincent ULg

in Militaria Belgica. Annales d'uniformologie et d'histoire militaire (2014)

Detailed reference viewed: 20 (2 ULg)
Full Text
Peer Reviewed
See detailTheoretical power spectra of mixed modes in low-mass red giant stars
Grosjean, Mathieu ULg; Dupret, Marc-Antoine ULg; Belkacem, Kevin et al

in Astronomy and Astrophysics (2014), 572

CoRoT and Kepler observations of red giant stars revealed very rich spectra of non-radial solar-like oscillations. Of particular interest was the detection of mixed modes that exhibit significant ... [more ▼]

CoRoT and Kepler observations of red giant stars revealed very rich spectra of non-radial solar-like oscillations. Of particular interest was the detection of mixed modes that exhibit significant amplitude, both in the core and at the surface of the stars. It opens the possibility of probing the internal structure from their innermost layers up to their surface throughout their evolution on the red giant branch, as well as on the red clump. Our objective is primarily to provide physical insight into the mechanism responsible for mixed-mode amplitudes and lifetimes. Subsequently, we aim at understanding the evolution and structure of red-giant spectra along with their evolution. The study of energetic aspects of these oscillations is also important for predicting the mode parameters in the power spectrum. Non-adiabatic computations, including a time-dependent treatment of convection, are performed and provide the lifetimes of radial and non-radial mixed modes. We then combine these mode lifetimes and inertias with a stochastic excitation model that gives us their heights in the power spectra. For stars representative of CoRoT and Kepler observations, we show under which circumstances mixed modes have heights comparable to radial ones. We stress the importance of the radiative damping in determining the height of mixed modes. Finally, we derive an estimate for the height ratio between a g-type and a p-type mode. This can thus be used as a first estimate of the detectability of mixed modes. [less ▲]

Detailed reference viewed: 16 (5 ULg)
Full Text
Peer Reviewed
See detailLa place des savoirs dans l'approche par compétences
Simons, Germain ULg

in Education & Formation (2014), e-302

Ce texte est une mise en perspective de l'axe 1 du n° e-302 de la revue Education & Formation consacré à la publication des actes du colloque d'ABC-Educ (octobre 2013).

Detailed reference viewed: 33 (3 ULg)
Full Text
Peer Reviewed
See detailA New Shift-Share Method
Artige, Lionel ULg; Van Neuss, Leif ULg

in Growth and Change (2014), 45(4), 667-683

Shift-share analysis is a decomposition technique widely used in regional studies to quantify an industry-mix effect and a competitive effect on the growth of regional employment (or any other relevant ... [more ▼]

Shift-share analysis is a decomposition technique widely used in regional studies to quantify an industry-mix effect and a competitive effect on the growth of regional employment (or any other relevant variable) relative to the national average. This technique has always been subject to criticism for its lack of theoretical basis. This paper presents a critical assessment of the methods suggested by Dunn (1960) and by Esteban-Marquillas (1972) and proposes a new shift-share method, which separates out the two effects unambiguously. By way of illustration, we provide an application to manufacturing employment in the Belgian provinces between 1995 and 2007. [less ▲]

Detailed reference viewed: 66 (15 ULg)
Full Text
Peer Reviewed
See detailA finite-element reciprocity solution for EEG forward modeling with realistic individual head models
Ziegler, Erik ULg; Chellappa, Sarah Laxhmi ULg; Gaggioni, Giulia ULg et al

in NeuroImage (2014), 103

Highlights • Creates EEG forward models suitable for high-resolution source localization. • Automatic T1-based whole-head finite element meshing and leadfield computation. • Pipelines can incorporate ... [more ▼]

Highlights • Creates EEG forward models suitable for high-resolution source localization. • Automatic T1-based whole-head finite element meshing and leadfield computation. • Pipelines can incorporate conductivity tensors from diffusion-weighted images. • Open-source toolbox shared under a permissive software license. • Accuracy comparable to SimBio FEM and superior to OpenMEEG BEM solutions. [less ▲]

Detailed reference viewed: 71 (21 ULg)
Full Text
Peer Reviewed
See detailCalcifications des tissus mous des jambes
COLLIN, Romain ULg; ANDRE, Béatrice ULg; Crielaard, Jean-Michel ULg et al

in Revue Médicale de Liège (2014), 69(12), 641-643

Detailed reference viewed: 25 (3 ULg)
Full Text
Peer Reviewed
See detailPoly( N-vinylcaprolactam): A thermoresponsive macromolecule with promising future in biomedical field
Liu, Ji; Debuigne, Antoine ULg; Detrembleur, Christophe ULg et al

in Advanced Healthcare Materials (2014), 3(12), 1941-1968

Poly( N -vinylcaprolactam) (PNVCL) is a thermoresponsive and biocompatible polymer that raises an increasing interest in the biomedical area, especially in drug delivery systems (DDS) that include ... [more ▼]

Poly( N -vinylcaprolactam) (PNVCL) is a thermoresponsive and biocompatible polymer that raises an increasing interest in the biomedical area, especially in drug delivery systems (DDS) that include micelles, hydrogels, and hybrid particles. The thermoresponsiveness of PNVCL, used alone or in combination with other stimuli- responsive polymers or particles (pH, magnetic fi eld, or chemicals), is often key in the loading and/or release process in these DDS. The renewed focus on this polymer, which is known for decades, is to a large extent due to recent progress in synthetic strategies. Especially, the advent of efficient controlled radical polymerization (CRP) methods for NVCL monomer gives now access to unprecedented well-defi ned NVCL-based copolymers with unique properties. This Review article addresses up-to-date synthetic aspects, biological features, and biomedical applications of the latest NVCL-containing systems. [less ▲]

Detailed reference viewed: 52 (5 ULg)
Full Text
Peer Reviewed
See detailSur les définitions de Dieu. Entretien avec Valère Novarina
Dubouclez, Olivier ULg; Novarina, Valère

in Littérature (2014)

Detailed reference viewed: 48 (1 ULg)
Full Text
Peer Reviewed
See detailHeterogeneity of phenotypes in severe asthmatics. The Belgian Severe Asthma Registry (BSAR).
SCHLEICH, FLorence ULg; Brusselle, G.; Louis, Renaud ULg et al

in Respiratory medicine (2014), 108(12), 1723-32

The Belgian severe asthma registry is a web-based registry encompassing demographic, clinical, functional and inflammatory data of severe asthmatics (SA), aiming at improving awareness, knowledge on its ... [more ▼]

The Belgian severe asthma registry is a web-based registry encompassing demographic, clinical, functional and inflammatory data of severe asthmatics (SA), aiming at improving awareness, knowledge on its natural history and subphenotypes, and offering tools to optimize care of this asthma population. METHODS: The cross-sectional analyses of this registry included 350 SA as defined by the ATS (2000) from 9 Belgian centres, with at least one year follow up. RESULTS: Mean age was 55 +/- 14 yrs. SA were more frequently female (57%) and atopic (70%). Late-onset asthma (>/=40 yr) was observed in 31% of SA. Current smokers represented 12% while 31% were ex-smokers. In addition to high doses ICS + LABA, 65% of patients were receiving LTRA, 27% anti-IgE and 24% maintenance oral corticosteroids (8 mg (Interquartile range-IQR:4-8) methylprednisolone). Despite impaired airflow (median FEV1:67%; IQR: 52-81) only 65% had a post-bronchodilator FEV1/FVC ratio <70%. The median blood eosinophil count was 240/mm(3). The median FENO was 26 ppb (IQR: 15-43) and 22% of SA had FENO >/= 50 ppb. Induced sputum was successful in 86 patients. Eosinophilic asthma (sputum Eos >/= 3%) was the predominant phenotype (55%) while neutrophilic (sputum Neu >/= 76%) and paucigranulocytic asthma accounted for 22% and 17% respectively. Comorbidities included rhinitis and chronic rhinosinusitis (49%), nasal polyposis (19%), oesophageal reflux (36%), overweight and obesity (47%) and depression (19%). In addition, 8% had aspirin-induced asthma and 3% ABPA. Asthma was not well-controlled in 83% according to ACT < 20 and 77% with ACQ > 1.5. CONCLUSION: In this cohort of patients with severe asthma, the majority displayed indices of persistent airflow limitation and eosinophilic inflammation despite high-dose corticosteroids, suggesting potential for eosinophil-targeted biotherapies. [less ▲]

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailThe Growth of the Skull Roof Plates in Arabosteus variabilis (Acanthothoraci, Placodermi) from the Early Devonian Jauf Formation (Saudi Arabia): Preliminary Results
Olive, Sébastien ULg; Goujet, Daniel; Lelièvre, Hervé et al

in Paleontological Journal (2014), 48(9), 992-1002

The skull roof growth of Arabosteus variabilis (Acanthothoraci), from the Pragian-Early Emsian of Saudi Arabia is studied on the basis of well preserved growth lines on the dermal plates. A clear tendency ... [more ▼]

The skull roof growth of Arabosteus variabilis (Acanthothoraci), from the Pragian-Early Emsian of Saudi Arabia is studied on the basis of well preserved growth lines on the dermal plates. A clear tendency towards growth in length, i.e. allometry in length, can be observed for all studied skull roof plates of Arabosteus variabilis as well as for the skull roof in general. Each studied plate displays particular growth shaping the skull roof according to its position in the skull roof pattern, e.g., the preorbital plate controls the shape of the part of the orbit and the nuchal plate retains the relative proportions in the skull roof during growth. [less ▲]

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailManifesto de Curitiba: pela Prevenção Quaternária e por uma Medicina sem conflitos de interesse
Silva, André Luiz da; Mangin, Derelie; Pizzanelli, Miguel et al

in Revista Brasileira de Medicina de Família e Comunidade (2014), 9(33), 371-374

Detailed reference viewed: 27 (3 ULg)
Full Text
Peer Reviewed
See detailSpeciation in Malagasy lemurs: a review of the cryptic diversity in genus Lepilemur
Wilmet, Leslie ULg; Schwitzer, Christoph; Devillers, Pierre et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2014), 18(4), 577-588

Madagascar is one of the highest biodiversity hotspots on the planet; however, it is also one of the most heavily impacted countries in the world in terms of forest degradation and general habitat ... [more ▼]

Madagascar is one of the highest biodiversity hotspots on the planet; however, it is also one of the most heavily impacted countries in the world in terms of forest degradation and general habitat destruction. Genus Lepilemur, in family Lepilemuridae, is a genus of small, nocturnal, exclusively arboreal Malagasy folivores. All species in the genus have small ranges of distribution. Fully forest-dependent, they have a high risk of extinction. Various models and theories of speciation mechanisms have been developed for the fauna and flora of Madagascar. For instance, in the northwestern part of the island, some authors used Lepilemur spp. to test two existing models of distribution: the “Martin model” and “Wilmé model”. Regarding the impact of forest destruction and habitat degradation in Madagascar, conservation strategies for Lepilemur need to be put in place. This paper gives an overview of the current knowledge of the genus Lepilemur and examines speciation for Malagasy lemurs. The understanding of species distribution within biodiversity hotspots is important to identify target for conservation. Therefore, we summarize and compare three biogeography models related to lemurs distribution in order to understand the reasons behind the high diversity (26 species in total) among the genus Lepilemur. Particular attention is also given to the concept of species regarding biodiversity issues and the taxonomic explosion in genus Lepilemur. [less ▲]

Detailed reference viewed: 36 (6 ULg)
Full Text
See detailPicpus et ses doubles
Demoulin, Laurent ULg; Lemoine, Michel

in Traces (2014), 21

Simenon a écrit Signé Picpus dans des conditions particulières. Il s’est essayé à construire une intrigue complexe en multipliant les personnages, les indices matériels et les mobiles sordides. Ce faisant ... [more ▼]

Simenon a écrit Signé Picpus dans des conditions particulières. Il s’est essayé à construire une intrigue complexe en multipliant les personnages, les indices matériels et les mobiles sordides. Ce faisant, il n’a pas laissé à ses lecteurs le rôle d’herméneutes psychologiques qu’il leur confère d’ordinaire. [less ▲]

Detailed reference viewed: 17 (2 ULg)
Full Text
See detailLa "nuit étoilée" et le "triangle hyperéchogène péri-veineux hilaire", signes de torsion splénique à l'échographie?
Terradas Crespo, Emilia; Barthelemy, Nicolas ULg; Gommeren, Kris ULg et al

in Monde Vétérinaire (Le) : European Veterinary Magazine (2014), 147

Une splénomégalie avec des plages hypoéchogènes diffuses et de multiples lignes hyperéchogènes parallèles dans le parenchyme, appelé lacy pattern ou stary sky = nuit étoilée, est un signe ayant une haute ... [more ▼]

Une splénomégalie avec des plages hypoéchogènes diffuses et de multiples lignes hyperéchogènes parallèles dans le parenchyme, appelé lacy pattern ou stary sky = nuit étoilée, est un signe ayant une haute probabilité de torsion splénique à l’échographie. Un autre signe échographique a été décrit comme étant un signe encore plus fiable de torsion splénique aigue. Il s’agit du triangle hyperéchogène péri-veineux hilaire. Cependant, ces signes ne sont pas des signes pathognomoniques de torsion splénique à l’échographie. [less ▲]

Detailed reference viewed: 12 (2 ULg)
Full Text
Peer Reviewed
See detailDeux ans de formation et d’accompagnement techno-pédagogique à l’ULg : public, impact et perspectives
Van de Poël, Jean-François ULg; Verpoorten, Dominique ULg

in Education & Formation (2014), e-302

Cet article présente une recherche quanti-qualitative portant sur 225 enseignants ayant suivi des formations techno-pédagogiques dispensées par la Cellule eCampus (IFRES, Université de Liège, Belgique) de ... [more ▼]

Cet article présente une recherche quanti-qualitative portant sur 225 enseignants ayant suivi des formations techno-pédagogiques dispensées par la Cellule eCampus (IFRES, Université de Liège, Belgique) de 2011 à 2013. Les données récoltées sont utilisées pour : a) qualifier le public de ces formations, b) évaluer, grâce à une grille d’analyse de discours nommée CInOpTIC, leurs effets sur le développement techno-pédagogique des participants, c) étudier la demande d’accompagnement techno-pédagogique, considérée comme un effet induit par les formations. Sur base des données empiriques analysées, l’article élabore des perspectives pour la régulation des formations eLearning. [less ▲]

Detailed reference viewed: 34 (2 ULg)
Full Text
Peer Reviewed
See detailGenetic parameters for direct and maternal calving ease in Walloon dairy cattle based on linear and threshold models
Vanderick, Sylvie ULg; Troch, Thibault ULg; Gillon, Alain et al

in Journal of Animal Breeding & Genetics (2014), 131(6), 513-521

Calving ease scores from Holstein dairy cattle in the Walloon Region of Belgium were analysed using univariate linear and threshold animal models. Variance components and derived genetic parameters were ... [more ▼]

Calving ease scores from Holstein dairy cattle in the Walloon Region of Belgium were analysed using univariate linear and threshold animal models. Variance components and derived genetic parameters were estimated from a dataset including 33,155 calving records. Included in the models were season, herd and sex of calf age of dam classes group of calvings interaction as fixed effects, herd year of calving, maternal permanent environment and animal direct and maternal additive genetic as random effects. Models were fitted with the genetic correlation between direct and maternal additive genetic effects either estimated or constrained to zero. Direct heritability for calving ease was about 8% with linear models and about 12% with threshold models. Maternal heritabilities were about 2% and 4%, respectively. Genetic correlation between direct and maternal additive effects was found to be not significantly different from zero. Models were compared in terms of goodness of fit and predictive ability. Criteria of comparison such as mean squared error, correlation between observed and predicted calving ease scores as well as between estimated breeding values were estimated from 85,118 calving records. The results provided few differences between linear and threshold models even though correlations between estimated breeding values from subsets of data for sires with progeny from linear model were 17% and 23 % greater for direct and maternal genetic effects, respectively, than from threshold model. For the purpose of genetic evaluation for calving ease in Walloon Holstein dairy cattle, the linear animal model without covariance between direct and maternal additive effects was found to be the best choice. [less ▲]

Detailed reference viewed: 32 (10 ULg)
Full Text
Peer Reviewed
See detailCellules stromales mésenchymateuses et transplantation d'organes
DETRY, Olivier ULg; JOURET, François ULg; VANDERMEULEN, Morgan ULg et al

in Revue Médicale de Liège (2014), 69

Mesenchymal stromal cells (MSC) are multipotent and self-renewing cells. MSC are studied for their in vivo and in vitro immunomodulatory effects, in the prevention or the treatment of ischemic injury, and ... [more ▼]

Mesenchymal stromal cells (MSC) are multipotent and self-renewing cells. MSC are studied for their in vivo and in vitro immunomodulatory effects, in the prevention or the treatment of ischemic injury, and for their potential properties of tissue or organ reconstruction. Over the last few years, the potential role of MSC in organ transplantation has been studied both in vitro and in vivo, and their properties make them an ideal potential cell therapy after solid organ transplantation. A prospective, controlled, phase 1-2 study has been initiated at the CHU of Liege, Belgium. This study assesses the potential risks and benefits of MSC infusion after liver or kidney transplantation. Even if the preliminary results of this study look promising, solely a prospective, randomized, large scale, phase 3 study will allow the clinical confirmation of the theoretical benefits of MSC in solid organ transplantation. [less ▲]

Detailed reference viewed: 27 (9 ULg)
Full Text
Peer Reviewed
See detailBronchial thermoplasty: a new therapeutic option for the treatment of severe, uncontrolled asthma in adults.
Dombret, Marie-Christine; Alagha, Khuder; Philippe Boulet, Louis et al

in European respiratory review : an official journal of the European Respiratory Society (2014), 23(134), 510-8

Bronchial thermoplasty is a young yet promising treatment for severe asthma whose benefit for long-term asthma control outweighs the short-term risk of deterioration and hospitalisation in the days ... [more ▼]

Bronchial thermoplasty is a young yet promising treatment for severe asthma whose benefit for long-term asthma control outweighs the short-term risk of deterioration and hospitalisation in the days following the treatment. It is an innovative treatment whose clinical efficacy and safety are beginning to be better understood. Since this is a device-based therapy, the overall evaluation of risk-benefit is unlike that of pharmaceutical products; safety aspects, regulatory requirements, study design and effect size assessment may be unfamiliar. The mechanisms of action and optimal patient selection need to be addressed in further rigorous clinical and scientific studies. Bronchial thermoplasty fits in perfectly with the movement to expand personalised medicine in the field of chronic airway disorders. This is a device-based complimentary asthma treatment that must be supported and developed in order to meet the unmet needs of modern severe asthma management. The mechanisms of action and the type of patients that benefit from bronchial thermoplasty are the most important challenges for bronchial thermoplasty in the future. [less ▲]

Detailed reference viewed: 12 (3 ULg)
Full Text
Peer Reviewed
See detailTransient small-scale structure in the main auroral emission at Jupiter
Palmaerts, Benjamin ULg; Radioti, Aikaterini ULg; Grodent, Denis ULg et al

in Journal of Geophysical Research. Space Physics (2014), 119

Detailed reference viewed: 23 (10 ULg)
Full Text
Peer Reviewed
See detailExplaining the CMS Higgs lepton-flavor violating
Aristizabal Sierra, Diego ULg; Vicente, Avelino ULg

in Physical Review. D : Particles and Fields (2014), 90(11), 115004

Direct searches for lepton flavor violating Higgs boson decays in the τ μ channel have been recently reported by the CMS collaboration. The results display a slight excess of signal events with a ... [more ▼]

Direct searches for lepton flavor violating Higgs boson decays in the τ μ channel have been recently reported by the CMS collaboration. The results display a slight excess of signal events with a significance of 2.5σ, which translates into a branching ratio of about 1%. By interpreting these findings as a hint for beyond the standard model physics, we show that the Type-III 2HDM is capable of reproducing such signal while at the same time satisfying vacuum stability, perturbativity, electroweak precision data, measured Higgs standard decay modes and low-energy lepton flavor violating constraints. We have found that the allowed signal strength ranges for the bb, WW* and ZZ* standard channels shrink as soon as BR(h→τμ)∼ 1% is enforced. Thus, we point out that if the excess persists, improved measurements of these channels may be used to test our Type-III 2HDM scenario. [less ▲]

Detailed reference viewed: 13 (1 ULg)
Full Text
Peer Reviewed
See detailPONTE ET QUALITÉ D’OEUFS DE CAILLES ÉLEVÉES EN CONDITIONS SEMI INTENSIVES DANS L’EST ALGÉRIEN
Moula, Nassim ULg; Philippe, François-Xavier ULg; Ait Kaki, Asma et al

in Archivos de Zootecnia (2014), 63(244), 693-696

This work investigates laying performances and egg quality of 200 quails during 266 laying days. The first collected 240 eggs, for the periods: 12, 16, 20, 24, 28, 32, 36, 40, 44 weeks were used in this ... [more ▼]

This work investigates laying performances and egg quality of 200 quails during 266 laying days. The first collected 240 eggs, for the periods: 12, 16, 20, 24, 28, 32, 36, 40, 44 weeks were used in this study. The average laying rate calculated over a period of 37 weeks is 74.44 %. All studied eggs quality parameters were significantly (p<0.001) influenced by the age of the quail. The average weight of the whole egg (13.66 g), yolk (3.99 g) and shell (2.28 g) reach their maximum value at the 40th week. The maximum albumen average weight (7.45 g) was observed at 32nd week. Albumen (12.02) and yolk (48.72) indices recorded their highest values at the 12th and the 16th weeks, respectively. The eggs freshness, expressed here by Haugh units decreased with age. They range from 89.56 at the 12th week to 83.71 at the 44th week of age. Yolk color registered values with irregular fluctuations (7.12 to 9.33) in a colorimetric scale of 15 ladders. Highly significant and positive correlations (p<0.001) and were recorded between the whole egg weight and the weight of albumen, yolk and shell. To conclude, the quail age affects significantly the various egg quality parameters. [less ▲]

Detailed reference viewed: 31 (6 ULg)
Full Text
Peer Reviewed
See detailUsing approximate dynamic programming for estimating the revenues of a hydrogen-based high-capacity storage device
François-Lavet, Vincent ULg; Fonteneau, Raphaël ULg; Ernst, Damien ULg

in IEEE Symposium Series on Computational Intelligence (2014)

This paper proposes a methodology to estimate the maximum revenue that can be generated by a company that operates a high-capacity storage device to buy or sell electricity on the day-ahead electricity ... [more ▼]

This paper proposes a methodology to estimate the maximum revenue that can be generated by a company that operates a high-capacity storage device to buy or sell electricity on the day-ahead electricity market. The methodology exploits the Dynamic Programming (DP) principle and is specified for hydrogen-based storage devices that use electrolysis to produce hydrogen and fuel cells to generate electricity from hydrogen. Experimental results are generated using historical data of energy prices on the Belgian market. They show how the storage capacity and other parameters of the storage device influence the optimal revenue. The main conclusion drawn from the experiments is that it may be advisable to invest in large storage tanks to exploit the inter-seasonal price fluctuations of electricity. [less ▲]

Detailed reference viewed: 29 (18 ULg)
Full Text
Peer Reviewed
See detailMethodology to characterize a residential building stock using a bottom-up approach: a case study applied to Belgium
Gendebien, Samuel ULg; Georges, Emeline ULg; Bertagnolio, Stéphane et al

in International Journal of Sustainable Energy Planning and Management (2014)

Detailed reference viewed: 30 (10 ULg)
Full Text
Peer Reviewed
See detailChanges in cerebral metabolism in patients with a minimally conscious state responding to zolpidem.
Chatelle, Camille ULg; Thibaut, Aurore ULg; Gosseries, Olivia ULg et al

in Frontiers in Neuroscience (2014)

Background:Zolpidem,ashort-actingnon-benzodiazepineGABAagonisthypnotic,hasbeenshowntoinduceparadoxicalresponsesinsomepatientswithdisordersofconsciousness(DOC ... [more ▼]

Background:Zolpidem,ashort-actingnon-benzodiazepineGABAagonisthypnotic,hasbeenshowntoinduceparadoxicalresponsesinsomepatientswithdisordersofconsciousness(DOC),leadingtorecoveryofarousalandcognitiveabilities.Wehereassessedzolpidem-inducedchangesinregionalbrainmetabolisminthreepatientswithknownzolpidemresponseinchronicpost-anoxicminimallyconsciousstate(MCS).Methods:[18F]-fluorodeoxyglucosepositronemissiontomography(FDG-PET)andstandardizedclinicalassessmentsusingtheComaRecoveryScale-Revisedwereperformedafteradministrationof10mgzolpidemorplaceboinarandomizeddoubleblind2-dayprotocol.PETdatapreprocessingandcomparisonwithahealthyage-matchedcontrolgroupwereperformedusingstatisticalparametricmapping(SPM8).Results:Behaviorally,allpatientsrecoveredfunctionalcommunicationafteradministrationofzolpidem(i.e.,emergencefromtheMCS).FDG-PETshowedincreasedmetabolismindorsolateralprefrontalandmesiofrontalcorticesafterzolpidembutnotafterplaceboadministration.Conclusion:Ourdatashowametabolicactivationofprefrontalareas,corroboratingtheproposedmesocircuithypothesistoexplaintheparadoxicaleffectofzolpidemobservedinsomepatientswithDOC.ItalsosuggeststhekeyroleoftheprefrontalcorticesintherecoveryoffunctionalcommunicationandobjectuseinhypoxicpatientswithchronicMCS. [less ▲]

Detailed reference viewed: 19 (10 ULg)
Full Text
Peer Reviewed
See detailLes arabismes dans le TLF : tentative de classement historique
Baiwir, Esther ULg

in Revue de Linguistique Romane (2014), 78

Parmi les nombreux mots traditionnellement étiquetés comme «arabismes» figurent des cas relevant de classes diverses. Nous jetons ici un regard diachronique et global sur cette classe de lexèmes ... [more ▼]

Parmi les nombreux mots traditionnellement étiquetés comme «arabismes» figurent des cas relevant de classes diverses. Nous jetons ici un regard diachronique et global sur cette classe de lexèmes particuliers, parmi lesquels nous distinguons les emprunts dits directs, émanant de contacts récurrents et prolongés entre populations arabophones et populations francophones, et les emprunts dits indirects, qu'en toute rigueur nous devrions exclure de notre étude en vertu de la défiance légitime envers l'etimologia remota. Nous tentons cependant de montrer que cette méfiance mérite d'être nuancée à l'aune des conclusions que cette pratique lexicographique permet de tirer sur les mouvements socio-historiques qu'elle illustre. En effet, de l'examen des itinéraires et des époques d'emprunt se dégage l'histoire des relations entre monde arabophone et monde roman. [less ▲]

Detailed reference viewed: 27 (4 ULg)
Full Text
Peer Reviewed
See detailUn nouvel instrument d’évaluation des altérations du comportement auditif chez l’enfant avec autisme : l’échelle EACAA - E (Echelle Altérations Comportement Auditif Autisme - Enfant)
Filipova, Marina; Boulard, Aurore ULg; Blanc, Romuald et al

in Revue Francophone de Clinique Comportementale et Cognitive (2014), XIX(3), 57-69

Detailed reference viewed: 96 (7 ULg)
Full Text
Peer Reviewed
See detailComment je traite … Recommandations pour interrompre un traitement médicamenteux
SCHEEN, André ULg

in Revue Médicale de Liège (2014), 69(12), 644-649

L’interruption d’un traitement pharmacologique est une situation clinique fréquente qui peut paraître plus simple à gérer que l’instauration d’un nouveau traitement, mais qui impose néanmoins de remplir ... [more ▼]

L’interruption d’un traitement pharmacologique est une situation clinique fréquente qui peut paraître plus simple à gérer que l’instauration d’un nouveau traitement, mais qui impose néanmoins de remplir certaines conditions et de respecter certaines précautions : 1) pouvoir expliciter les raisons qui justifient l’arrêt du traitement; 2) vérifier qu’il n’y a pas de danger à interrompre le traitement (même si cette interruption est transitoire); 3) savoir comment gérer au mieux l’arrêt de la thérapeutique, en particulier choisir entre une interruption immédiate et une décroissance posologique progressive; et, enfin, 4) assurer un suivi approprié du patient dûment informé chez lequel le traitement vient d’être stoppé. [less ▲]

Detailed reference viewed: 18 (2 ULg)
Full Text
Peer Reviewed
See detailComposantes métacognitives ; Définitions et outils d’évaluation
Frenkel, Stéphanie ULg

in Enfance : Psychologie, Pédagogie, Neuropsychiatrie, Sociologie (2014), 4

Many tools have been developed since the 1970s in order to assess metacognition and its first implementations. Over time, questionnaires, tests, interviews, observations, computer programmes, and other ... [more ▼]

Many tools have been developed since the 1970s in order to assess metacognition and its first implementations. Over time, questionnaires, tests, interviews, observations, computer programmes, and other methods have become more and more based on self-regulated learning theories. At the same time, for the last fifteen years or so, the number of students with learning difficulties linked to the way they learn seems to be increasing slowly but steadily. Therefore, it seems essential to enable these learners develop a more efficient learning behaviour. Similarly, we see that professional field workers are increasingly asking for efficient and adapted tools in this field. The purpose of this paper is twofold: it provides a review of the above-mentioned assessment tools, and it discusses them in order to contribute to the creation of new tools with a wider scope. Following an analysis of the abundant literature on the subject, two classifications were developed. Thirty-five tools were kept and categorised: first, according to a developmental perspective (preschool, primary school, secondary school and/or adult), second, according to the metacognitive component they assess (metacognitive knowledge, strategies and/or experiences). However, no existing tool covers the whole period of compulsory education. Moreover, in order to assess the learners’ metacognitive abilities fully, it is necessary to combine online and offline assessments in concrete situations. There are still some needs to be met in this regard. [less ▲]

Detailed reference viewed: 91 (22 ULg)
Full Text
Peer Reviewed
See detailInput of supercritical carbon dioxide to polymer synthesis: an overview
Boyère, Cédric; Jérôme, Christine ULg; Debuigne, Antoine ULg

in European Polymer Journal (2014), 61

The ongoing search for environmentally friendlier alternative to the organic solvents used in chemical processes has led to the development of technologies based on supercritical carbon dioxide (scCO2 ... [more ▼]

The ongoing search for environmentally friendlier alternative to the organic solvents used in chemical processes has led to the development of technologies based on supercritical carbon dioxide (scCO2), which is non-flammable, non-toxic and relatively inert fluid. Polymer chemistry does not escape this trend and last achievements in the field of polymer synthesis in scCO2 are reviewed here. Without claiming to be exhaustive, we go through and discuss the benefits of the main polymerization processes in scCO2 including homogeneous, precipitation, dispersion, suspension and emulsion systems. A particular attention is drawn to water/carbon dioxide emulsion polymerization and to the suited surface active agents. This review also underlines that heterogeneous polymerization based on CO2 is more than a strategy for reducing the ecological footprint of the polymer production but it allows structuring the polymer materials into particles or highly interconnected macroporous networks. [less ▲]

Detailed reference viewed: 42 (6 ULg)
Full Text
See detailLaTeX, un peu, beaucoup (6. Tableaux)
Dupont, Pascal ULg

in Losanges (2014), 27

Detailed reference viewed: 8 (1 ULg)
Full Text
Peer Reviewed
See detailCanagliflozine (Invokana®) : inhibiteur des cotransporteurs rénaux sglt2 pour traiter le diabète de type 2
SCHEEN, André ULg

in Revue Médicale de Liège (2014), 69(12), 692-699

Canagliflozin is an inhibitor of sodium-glucose cotransporters type 2 (SGLT2) that are present in renal tubules. This specific insulin-independent mechanism promotes glucosuria, which results in a ... [more ▼]

Canagliflozin is an inhibitor of sodium-glucose cotransporters type 2 (SGLT2) that are present in renal tubules. This specific insulin-independent mechanism promotes glucosuria, which results in a reduction in fasting and postprandial glycaemia and a decrease of glycated haemoglobin (HbA1c). Furthermore, canagliflozin promotes weight loss and lowers arterial (mainly systolic) blood pressure. Its efficacy is decreased in patients with renal insufficiency and the treatment should be stopped if estimated glomerular filtration rate is below 45 ml/min/1.73 m². Both the efficacy and safety of canagliflozin have been investigated in 24 to 104-week controlled trials versus placebo or versus an active comparator (glimepiride or sitagliptin). The mean reduction in HbA1c averages 0.75% when added to other treatments, as compared to placebo. The 100 mg dose is as active as sitagliptin 100 mg while the 300 mg canagliflozin dose is even more efficacious. Adverse events are mostly mycotic genital infections and more rarely mild urinary tract infections. Caution is required in elderly patients and the risk of volume depletion should be checked (hypotension). Hypoglycaemia may occur only in patients already treated with an insulin-secreting agent or insulin. Canagliflozin is commercialized under the trade name Invokana®, at the doses of 100 mg and 300 mg once daily, for the treatment of type 2 diabetes. [less ▲]

Detailed reference viewed: 62 (0 ULg)
Full Text
Peer Reviewed
See detailAbout the Uniform Hölder Continuity of Generalized Riemann Function
Bastin, Françoise ULg; Nicolay, Samuel ULg; Simons, Laurent ULg

in Mediterranean Journal of Mathematics (2014)

In this paper, we study the uniform H\"{o}lder continuity of the generalized Riemann function~$R_{\alpha,\beta}$ (with $\alpha>1$ and $\beta>0$) defined by \[ R_{\alpha,\beta}(x)=\sum_{n=1}^{+\infty}\frac ... [more ▼]

In this paper, we study the uniform H\"{o}lder continuity of the generalized Riemann function~$R_{\alpha,\beta}$ (with $\alpha>1$ and $\beta>0$) defined by \[ R_{\alpha,\beta}(x)=\sum_{n=1}^{+\infty}\frac{\sin(\pi n^\beta x)}{n^\alpha},\quad x\in\mathbb{R}, \] using its continuous wavelet transform. In particular, we show that the exponent we find is optimal. We also analyse the behaviour of~$R_{\alpha,\beta}$ as $\beta$ tends to infinity. [less ▲]

Detailed reference viewed: 28 (7 ULg)
Full Text
Peer Reviewed
See detailToward a tool aimed to quantify soil compaction risks at a regional scale: application to Wallonia (Belgium)
D'Or, Dimitri; Destain, Marie-France ULg

in Soil & Tillage Research (2014), 144

The spatial analysis of the soil compaction risk has been developed at the regional level and applied to Wallonia (Belgium). The methodology is based on the estimation of the probability of exceeding the ... [more ▼]

The spatial analysis of the soil compaction risk has been developed at the regional level and applied to Wallonia (Belgium). The methodology is based on the estimation of the probability of exceeding the preconsolidation stress due to the application of loads on the soil. Preconsolidation stresses (Pc) are computed from the pedotransfer functions of Horn and Fleige (2003) at pF 1.8 and 2.5 and classified into 6 categories ranging from very low Pc (< 30 kPa) to extremely high Pc (> 150 kPa). The computation requires the knowledge of pedological (texture, organic content), mechanical (bulk density, cohesion, internal friction angle), and hydraulic variables (water content available, non-available water content, air capacity, saturated hydraulic conductivity). These variables are obtained from databases like HYPRES or AARDEWERK or from pedotransfer functions. The computation of Pc takes into account the spatial structure of the data: in some cases, data are abundant (e.g. texture data) and spatial variability is taken into account through geostatistical methods. In other cases, the data is sparse but uncertainty information can be extracted from the knowledge of the statistical distribution. Maps of the most probable Pc class are produced. Uncertainty is computed as the classification error probability. Implementation of these methods in Wallonia showed that Pc values higher than 120 kPa are reached either on 64 % of the territory at pF 2.5 or on 55 % at pF 1.8. A higher uncertainty was found at pF 2.5 than at pF 1.8. Uncertainty was also found higher for clay and clayed loess than for other textural classes present in Wallonia. The risk of compaction is defined as the probability that Pc is exceeded by the stress created by a load applied to the soil at a depth of 40 cm, the loads being similar to those induced by agricultural or forestry tires. It appeared that subsoil compaction risks exist mainly in loamy forest soils with small coarse fragments supporting loads similar to that existing on logging machines. In the zones where the uncertainty is low, the developed tool could be used as a basis for providing policy measures in order to promote soil-friendly farming and forest practices. [less ▲]

Detailed reference viewed: 48 (20 ULg)
Full Text
Peer Reviewed
See detailMafia Practices and Italian Entrepreneurial Activities in the Belgian Food Sector. Research Objectives
De Biase, Marco ULg

in The European Review of Organised Crime (2014), 1(2), 81-96

This research aims to study the social and economic processes which encourage the spread of mafia practices among some Italian entrepreneurs in the Belgian food sector. My working hypothesis is that mafia ... [more ▼]

This research aims to study the social and economic processes which encourage the spread of mafia practices among some Italian entrepreneurs in the Belgian food sector. My working hypothesis is that mafia practices are violent and predatory strategies to monopolize the economic market, which rely on the use of heterogeneous and cross-class social networks. In this view, these activities of old and new Italian entrepreneurs in Belgium are not the result of the exportation of mafia methods through migratory or cultural ties, but rather the outcome of a complex economic system of production in which certain Italian entrepreneurs have established profitable enterprises in the legal market using violent modalities of accumulation and specific strategies of relation. This research is developed through an ethnographic approach grounded on biographical collection and on participant observation, which is carried out through direct involvement in commercial activities in the sectors of interest. [less ▲]

Detailed reference viewed: 5 (2 ULg)
Full Text
Peer Reviewed
See detailToward a tool aimed to quantify soil compaction risks at a regional scale: application to Wallonia (Belgium)
D'Or, Dimitri; Destain, Marie-France ULg

in Soil & Tillage Research (2014), 144

The spatial analysis of the soil compaction risk has been developed at the regional level and applied to Wallonia (Belgium). The methodology is based on the estimation of the probability of exceeding the ... [more ▼]

The spatial analysis of the soil compaction risk has been developed at the regional level and applied to Wallonia (Belgium). The methodology is based on the estimation of the probability of exceeding the preconsolidation stress due to the application of loads on the soil. Preconsolidation stresses (Pc) are computed from the pedotransfer functions of Horn and Fleige (2003) at pF 1.8 and 2.5 and classified into 6 categories ranging from very low Pc (< 30 kPa) to extremely high Pc (> 150 kPa). The computation requires the knowledge of pedological (texture, organic content), mechanical (bulk density, cohesion, internal friction angle), and hydraulic variables (water content available, non-available water content, air capacity, saturated hydraulic conductivity). These variables are obtained from databases like HYPRES or AARDEWERK or from pedotransfer functions. The computation of Pc takes into account the spatial structure of the data: in some cases, data are abundant (e.g. texture data) and spatial variability is taken into account through geostatistical methods. In other cases, the data is sparse but uncertainty information can be extracted from the knowledge of the statistical distribution. Maps of the most probable Pc class are produced. Uncertainty is computed as the classification error probability. Implementation of these methods in Wallonia showed that Pc values higher than 120 kPa are reached either on 64 % of the territory at pF 2.5 or on 55 % at pF 1.8. A higher uncertainty was found at pF 2.5 than at pF 1.8. Uncertainty was also found higher for clay and clayed loess than for other textural classes present in Wallonia. The risk of compaction is defined as the probability that Pc is exceeded by the stress created by a load applied to the soil at a depth of 40 cm, the loads being similar to those induced by agricultural or forestry tires. It appeared that subsoil compaction risks exist mainly in loamy forest soils with small coarse fragments supporting loads similar to that existing on logging machines. In the zones where the uncertainty is low, the developed tool could be used as a basis for providing policy measures in order to promote soil-friendly farming and forest practices. [less ▲]

Detailed reference viewed: 48 (20 ULg)
Full Text
Peer Reviewed
See detailThe construction of workers’ rights consciousness through legal intermediations: the case of employment discrimination in Belgium
Lejeune, Aude ULg; Orianne, Jean-François ULg

in International Journal of Discrimination and the Law (2014), 14(4), 221-243

Through their different encounters with union, court, and government equality agency lawyers, workers report diverse understandings of their personal experience of injustice in the workplace. This paper ... [more ▼]

Through their different encounters with union, court, and government equality agency lawyers, workers report diverse understandings of their personal experience of injustice in the workplace. This paper examines workers’ experiences of discrimination and the role legal professionals play in litigating these issues in Belgium. Bringing together legal and rights consciousness studies and the sociology of intermediation and tracking different stages in the construction of discrimination cases, from the moment when a future litigant describes an event as an injustice to the moment when the judge recognises a discriminatory behaviour (or conversely, dismisses a case), we suggest several possible empirical explanations of the way in which interactions with legal intermediaries affect workers’ rights consciousness. Because we refer to socio-legal studies from common law countries, this paper also calls into question how best to import these studies to assist in analysing legal mobilisations and legal consciousness in continental Europe. [less ▲]

Detailed reference viewed: 30 (13 ULg)
Full Text
Peer Reviewed
See detailIdentification and characterization of drought stress responsive genes in faba bean (Vicia faba L.) by suppression subtractive hybridization
Abid, Ghassen; Muhovski, Yordan; Mingeot, Dominique et al

in Plant Cell, Tissue & Organ Culture (2014)

Detailed reference viewed: 11 (1 ULg)
Full Text
Peer Reviewed
See detailThree sub-Jupiter-mass planets: WASP-69b & WASP-84b transit active K dwarfs and WASP-70Ab transits the evolved primary of a G4+K3 binary
Anderson, D. R.; Collier Cameron, A.; Delrez, Laetitia ULg et al

in Monthly Notices of the Royal Astronomical Society (2014), 445(2),

We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ˜ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3 ... [more ▼]

We report the discovery of the transiting exoplanets WASP-69b, WASP-70Ab and WASP-84b, each of which orbits a bright star (V ˜ 10). WASP-69b is a bloated Saturn-mass planet (0.26 MJup, 1.06 RJup) in a 3.868-d period around an active, ˜1-Gyr, mid-K dwarf. ROSAT detected X-rays 60±27 arcsec from WASP-69. If the star is the source then the planet could be undergoing mass-loss at a rate of ˜1012 g s-1. This is one to two orders of magnitude higher than the evaporation rate estimated for HD 209458b and HD 189733b, both of which have exhibited anomalously large Lyman alpha absorption during transit. WASP-70Ab is a sub-Jupiter-mass planet (0.59 MJup, 1.16 RJup) in a 3.713-d orbit around the primary of a spatially resolved, 9-10-Gyr, G4+K3 binary, with a separation of 3.3 arcsec (>=800 au). WASP-84b is a sub-Jupiter-mass planet (0.69 MJup, 0.94 RJup) in an 8.523-d orbit around an active, ˜1-Gyr, early-K dwarf. Of the transiting planets discovered from the ground to date, WASP-84b has the third-longest period. For the active stars WASP-69 and WASP-84, we pre-whitened the radial velocities using a low-order harmonic series. We found that this reduced the residual scatter more than did the oft-used method of pre-whitening with a fit between residual radial velocity and bisector span. The system parameters were essentially unaffected by pre-whitening. [less ▲]

Detailed reference viewed: 17 (1 ULg)
Full Text
Peer Reviewed
See detailToward a tool aimed to quantify soil compaction risks at a regional scale: application to Wallonia (Belgium)
D'Or, Dimitri; Destain, Marie-France ULg

in Soil & Tillage Research (2014), 144

The spatial analysis of the soil compaction risk has been developed at the regional level and applied to Wallonia (Belgium). The methodology is based on the estimation of the probability of exceeding the ... [more ▼]

The spatial analysis of the soil compaction risk has been developed at the regional level and applied to Wallonia (Belgium). The methodology is based on the estimation of the probability of exceeding the preconsolidation stress due to the application of loads on the soil. Preconsolidation stresses (Pc) are computed from the pedotransfer functions of Horn and Fleige (2003) at pF 1.8 and 2.5 and classified into 6 categories ranging from very low Pc (< 30 kPa) to extremely high Pc (> 150 kPa). The computation requires the knowledge of pedological (texture, organic content), mechanical (bulk density, cohesion, internal friction angle), and hydraulic variables (water content available, non-available water content, air capacity, saturated hydraulic conductivity). These variables are obtained from databases like HYPRES or AARDEWERK or from pedotransfer functions. The computation of Pc takes into account the spatial structure of the data: in some cases, data are abundant (e.g. texture data) and spatial variability is taken into account through geostatistical methods. In other cases, the data is sparse but uncertainty information can be extracted from the knowledge of the statistical distribution. Maps of the most probable Pc class are produced. Uncertainty is computed as the classification error probability. Implementation of these methods in Wallonia showed that Pc values higher than 120 kPa are reached either on 64 % of the territory at pF 2.5 or on 55 % at pF 1.8. A higher uncertainty was found at pF 2.5 than at pF 1.8. Uncertainty was also found higher for clay and clayed loess than for other textural classes present in Wallonia. The risk of compaction is defined as the probability that Pc is exceeded by the stress created by a load applied to the soil at a depth of 40 cm, the loads being similar to those induced by agricultural or forestry tires. It appeared that subsoil compaction risks exist mainly in loamy forest soils with small coarse fragments supporting loads similar to that existing on logging machines. In the zones where the uncertainty is low, the developed tool could be used as a basis for providing policy measures in order to promote soil-friendly farming and forest practices. [less ▲]

Detailed reference viewed: 48 (20 ULg)