Conclusions: This is the first systematic spectroscopic characterisation of faint stars located in the SEP field. During the coming years, we plan to continue our survey and gather additional high- and mid-resolution data to better constrain our knowledge on key reference targets for Gaia. Tables 1-3, 5, 7, and 8 are only available at the CDS via anonym- ous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/597/A10Based on data taken with the VLT-UT2 of the European Southern Observatory, programmes 084.D-0427(A), 086.D-0295(A), and 088.D-0305(A).Based on data obtained from the ESO Science Archive Facility under request number 84886.Based on data obtained with the HERMES spectrograph, installed at the Mercator Telescope, operated on the island of La Palma by the Flemish Community, at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias and supported by the Fund for Scientific Research of Flanders (FWO), Belgium, the Research Council of KU Leuven, Belgium, the Fonds National de la Recherche Scientifique (F.R.S.-FNRS), Belgium, the Royal Observatory of Belgium, the Observatoire de Genève, Switzerland and the Thüringer Landessternwarte Tautenburg, Germany. [less ▲]Detailed reference viewed: 16 (4 ULg) Pest regulation and support of natural enemies in agriculture: Experimental evidence of within field wildflower stripsHatt, Séverin ; Chevalier Mendes Lopes, Thomas ; Boeraeve, Fanny et alin Ecological Engineering (2017), 98tRestoring ecosystem services in agriculture is vital to reach a sustainable food production. More specif-ically, developing farming practices which enhance biological pest control is a main issue for ... [more ▼]tRestoring ecosystem services in agriculture is vital to reach a sustainable food production. More specif-ically, developing farming practices which enhance biological pest control is a main issue for today’sagriculture. The aim of this study was to assess whether the two strategies of complicating the search ofhost plants by pests by increasing plant diversity, and of supporting their natural enemies by managinghabitats, could be combined simultaneously at the field scale to restore biological pest control and reducechemical insecticide use. In Gembloux (Belgium), wildflower strips (WFS) were sown within wheat cropsin which pests (i.e., aphids), their predators (i.e. aphidophagous hoverflies, lacewings and ladybeetles)and parasitoid wasps were monitored for 10 weeks in the period of May through July 2015 as indicatorsof the ES of pest control. Aphids were significantly reduced and adult hoverflies favoured in wheat inbetween WFS, compared to monoculture wheat plots. No significant differences were observed for adultlacewings, ladybeetles and parasitoids. In all treatments, very few lacewing and ladybeetle larvae wereobserved on wheat tillers. The abundance of hoverfly larvae was positively correlated with the aphid den-sity on tillers in between WFS, showing that increasing food provisions by multiplying habitats withinfields, and not only along margins, can help supporting aphidophagous hoverflies in crops. By enhancingthe ecosystem services of biological pest control, this study shows that increasing both plant diversityand managing habitats for natural enemies may reduce aphid populations, hence insecticide use. Futureresearch should continue this vein of work by quantifying the link between agricultural practices and thedelivery of ecosystem services in order to guide future measures of agricultural policies. [less ▲]Detailed reference viewed: 53 (8 ULg) A new, challenging benchmark for nonlinear system identificationTiso, Paolo; Noël, Jean-Philippe in Mechanical Systems & Signal Processing (2017), 84The progress accomplished during the past decade in nonlinear system identi fication in structural dynamics is considerable. The objective of the present paper is to consolidate this progress by ... [more ▼]The progress accomplished during the past decade in nonlinear system identi fication in structural dynamics is considerable. The objective of the present paper is to consolidate this progress by challenging the community through a new benchmark structure exhibiting complex nonlinear dynamics. The proposed structure consists of two o ffset cantilevered beams connected by a highly flexible element. For increasing forcing amplitudes, the system sequentially features linear behaviour, localised nonlinearity associated with the buckling of the connecting element, and distributed nonlinearity resulting from large elastic deformations across the structure. A finite element-based code with time integration capabilities is made available at http://sem.org/TDIV-Nonlin.asp. This code permits the numerical simulation of the benchmark dynamics in response to arbitrary excitation signals. [less ▲]Detailed reference viewed: 18 (1 ULg) Genomic Studies of Multiple Myeloma Reveal an Association between X Chromosome Alterations and Genomic Profile Complexity.Sticca, Tiberio ; CABERG, Jean-Hubert ; Wenric, Stéphane et alin Genes, Chromosomes & Cancer (2017)The genomic profile of multiple myeloma (MM) has prognostic value by dividing patients into a good prognosis hyperdiploid group and a bad prognosis non-hyperdiploid group with a higher incidence of IgH ... [more ▼]The genomic profile of multiple myeloma (MM) has prognostic value by dividing patients into a good prognosis hyperdiploid group and a bad prognosis non-hyperdiploid group with a higher incidence of IgH translocations. This classification, however, is inadequate and many other parameters like mutations, epigenetic modifications and genomic heterogeneity may influence the prognosis. We performed a genomic study by array-based comparative genomic hybridization (aCGH) on a cohort of 162 patients to evaluate the frequency of genomic gains and losses. We identified a high frequency of X chromosome alterations leading to partial Xq duplication, often associated with Xi deletion in female patients. This partial X duplication could be a cytogenetic marker of aneuploidy as it is correlated with a high number of chromosomal breakages. Patient with high level of chromosomal breakage had reduced survival regardless the region implicated. A higher transcriptional level was shown for genes with potential implication in cancer and located in this altered region. Among these genes, IKBKG and IRAK1 are members of the NFKB pathway which plays an important role in MM and is a target for specific treatments. [less ▲]Detailed reference viewed: 35 (7 ULg) Employee perspectives on safety citizenship behaviors and safety violationsChmiel, Nik; Laurent, Julie ; Hansez, Isabelle in Safety Science (2017), 93Two studies investigate whether employees viewing discretionary safety activities as part of their job role (termed safety citizenship role definitions, SCRDs) plays an important part in predicting two ... [more ▼]Two studies investigate whether employees viewing discretionary safety activities as part of their job role (termed safety citizenship role definitions, SCRDs) plays an important part in predicting two types of safety violation: routine violations conceptualized as related to an individual’s available cognitive energy or ‘effort’; and situational violations, which are those provoked by the organization (Reason, 1990). Study 1 showed SCRDs predicted situational violations only, and partially mediated the relationships between Perceived Management Commitment to Safety (PMCS) and work engagement with situational violations. These findings add to those by Hansez and Chmiel (2010), showing that routine and situational violations have predictors that differ. Study 1 findings also extend research reported by Turner et al. (2005), by showing that the effect of Job Control on SCRDs was mediated by both PMCS and work engagement. In study 2, participation in discretionary safety activities (safety participation) mediated the relationship between SCRDs and situational violations. Similar to study 1 The link between SCRDs and routine violations was non-significant and, strikingly, so was the link between safety participation and routine violations. These results support the view that processes involving SCRDs and safety participation are not cognitive-energetical in nature. In addition, study 2 findings extend previous work by Neal and Griffin (2006) by showing that SCRDs and safety knowledge partially mediated relationships between safety motivation and safety participation, whereas the direct effect of safety motivation on safety participation was non-significant. The results from both studies support the view that SCRDs are important in predicting situational violations. In study 2 SCRDs were shown to partially mediate the relationship between safety motivation and selfreported participation in discretionary safety activities (Safety Participation) which, in turn, related to situational violations. Interestingly there was no significant direct link between SCRDs and situational violations. These findings support the view that the effect of SCRDs on situational violations is fully mediated by participation in discretionary safety activities. [less ▲]Detailed reference viewed: 17 (8 ULg) Similarity of the Jovian satellite footprints: spots multiplicity and dynamicsBonfond, Bertrand ; Grodent, Denis ; Badman, S. V. et alin Icarus (2017)In the magnetospheres of Jupiter and Saturn, the intense interaction of the satellites Io, Europa, Ganymede and Enceladus with their surrounding plasma environment leaves a signature in the aurora of the ... [more ▼]In the magnetospheres of Jupiter and Saturn, the intense interaction of the satellites Io, Europa, Ganymede and Enceladus with their surrounding plasma environment leaves a signature in the aurora of the planet. Called satellite footprints, these auroral features appear either as a single spot (Europa and Enceladus) or as multiple spots (Io and Ganymede). Moreover, they can be followed by extended trailing tails in the case of Io and Europa, while no tail has been reported for Ganymede and Enceladus, yet. Here we show that all Jovian footprints can be made of several spots. Furthermore, the footprints all experience brightness variations on timescale of 2-3 minutes. We also demonstrate that the satellite location relative to the plasma sheet is not the only driver for the footprint brightness, but that the plasma environment and the magnetic field strength also play a role. These new findings demonstrate that the Europa and Ganymede footprints are very similar to the Io footprint. As a consequence, the processes expected to take place at Io, such as the bi-directional electron acceleration by Alfvén waves or the partial reflection of these waves on plasma density gradients, can most likely be extended to the other footprints, suggesting that they are indeed universal processes. [less ▲]Detailed reference viewed: 19 (3 ULg) The Tourist on the farm: a 'muddled' imageDubois, Charline ; Cawley, Mary; Schmitz, Serge in Tourism Management (2017), 59Agritourism is promoted as a method of offsetting decline in farm incomes, and is defined in different ways which creates difficulties in attracting tourists. The present research contributes to a better ... [more ▼]Agritourism is promoted as a method of offsetting decline in farm incomes, and is defined in different ways which creates difficulties in attracting tourists. The present research contributes to a better understanding of agritourism, based on evidence in Wallonia (Belgium) and Luxembourg. It does so by studying the image held by four groups of actors: (i) farmers who provide ‘agritourist’ experiences; (ii) promotional organisations; and tourists who both (iii) have and (iv) have not engaged in agritourism. Agritourism is a muddled concept between realities and stakeholder expectations but opportunities exist for targeting particular niche interests. [less ▲]Detailed reference viewed: 52 (15 ULg) Diet effects on bumblebee healthRoger, N.; Michez, D.; Wattiez, R. et alin Journal of Insect Physiology (2017), 96Among physiological processes, the maintenance of immunity is one of the most energetically costly in invertebrates. Disease resistance can be quantified by measuring immunocompetence, which is defined as ... [more ▼]Among physiological processes, the maintenance of immunity is one of the most energetically costly in invertebrates. Disease resistance can be quantified by measuring immunocompetence, which is defined as the ability of an organism to mount an immune response, either in cellular, humoral or behavioural forms. In insects, immune capacity can be affected by a variety of factors including pesticides, genetic diversity or diet. Here we focus on an important species of domesticated pollinator, Bombus terrestris, and the potential impact of a poor pollen diet (low nutritional content and toxic) on its health. We investigate three responses at both colony and individual levels: behavioural, humoral and cellular. Our results show that poor pollen diets decrease larval and pupal masses and increase larval ejection as well as adult constitutive immunity (i.e., prophenoloxidase assays). The susceptibility of bumblebees to disease and infection might therefore be greater after a nutritive stress. These findings raise the importance of available plant hosts, especially floral plant species providing pollen with suitable nutritive quality (i.e., nutrient pollen content) for bumblebees. © 2016 Elsevier Ltd [less ▲]Detailed reference viewed: 9 (0 ULg) A dynamic, sex-specific expression pattern of genes regulating thyroid hormone action in the developing zebra finch song control systemRaymaekers, S.R.; Verbeure, W.; Ter Haar, S.M. et alin General and Comparative Endocrinology (2017), 240The zebra finch (Taeniopygia guttata) song control system consists of several series of interconnected brain nuclei that undergo marked changes during ontogeny and sexual development, making it an excel ... [more ▼]The zebra finch (Taeniopygia guttata) song control system consists of several series of interconnected brain nuclei that undergo marked changes during ontogeny and sexual development, making it an excel- lent model to study developmental neuroplasticity. Despite the demonstrated influence of hormones such as sex steroids on this phenomenon, thyroid hormones (THs) – an important factor in neural devel- opment and maturation – have not been studied in this regard. We used in situ hybridization to compare the expression of TH transporters, deiodinases and receptors between both sexes during all phases of song development in male zebra finch. Comparisons were made in four song control nuclei: Area X, the lateral magnocellular nucleus of the anterior nidopallium (LMAN), HVC (used as proper name) and the robust nucleus of the arcopallium (RA). Most genes regulating TH action are expressed in these four nuclei at early stages of development. However, while general expression levels decrease with age, the activating enzyme deiodinase type 2 remains highly expressed in Area X, HVC and RA in males, but not in females, until 90days post-hatch (dph), which marks the end of sensorimotor learning. Furthermore, the L-type amino acid transporter 1 and TH receptor beta show elevated expression in male HVC and RA respectively compared to surrounding tissue until adulthood. Differences compared to sur- rounding tissue and between sexes for the other TH regulators were minor. These developmental changes are accompanied by a strong local increase in vascularization in the male RA between 20 and 30 dph but not in Area X or HVC. Our results suggest that local regulation of TH signaling is an important factor in the development of the song control nuclei during the song learning phase and that TH activation by DIO2 is a key player in this process. [less ▲]Detailed reference viewed: 14 (1 ULg) Evaluation of hazardous chemicals in edible insects and insect-based food intended for human consumptionPoma, G; Cuykx, M; Amato, E et alin Food and Chemical Toxicology (2017), 100Detailed reference viewed: 31 (3 ULg) La géographie linguistique au nord du domaine d'oïlBaiwir, Esther in Bien Dire et Bien Aprandre : Bulletin du Centre d'Etudes Médiévales et Dialectales de l'Université de Lille III (2017), 32Detailed reference viewed: 12 (0 ULg) Estrogen receptors and estetroldependent neuroprotective actions: a pilot studyTskitishvili, Ekaterine ; Pequeux, Christel ; Munaut, Carine et alin Journal of Endocrinology (2017), 232(1), 85-95Estetrol (E4) has strong antioxidative, neurogenic and angiogenic effects in neural system resulting in the attenuation of neonatal hypoxic–ischemic encephalopathy. We aimed to define the role of estrogen ... [more ▼]Estetrol (E4) has strong antioxidative, neurogenic and angiogenic effects in neural system resulting in the attenuation of neonatal hypoxic–ischemic encephalopathy. We aimed to define the role of estrogen receptors in E4-dependent actions in neuronal cell cultures and prove the promyelinating effect of E4. In vitro the antioxidative and cell survival/ proliferating effects of E4 on H2O2-induced oxidative stress in primary hippocampal cell cultures were studied using different combinations of specific inhibitors for ERα (MPP dihydrochloride), ERβ (PHTTP), GPR30 (G15) and palmytoilation (2-BR). LDH activity and cell survival assays were performed. In vivo the promyelinating role of different concentrations of E4 (1mg/kg/day, 5mg/kg/day, 10mg/kg/day, 50mg/kg/day) was investigated using the hypoxic–ischemic brain damage model in the 7-day-old immature rats before/after the induction of hypoxic–ischemic insult. Myelin basic protein (MBP) immunostaining was performed on brain coronal sections. Our results show that LDH activity is significantly upregulated in cell cultures where the E4’s effect was completely blocked by concomitant treatment either with ERα and ERβ inhibitors (MPP and PHTPP, respectively), or ERα and ERβ inhibitors combined with 2-BR. Cell survival is significantly downregulated in cell cultures where the effect of E4 was blocked by ERβ inhibitor (PHTTP) alone. The blockage of GRP30 receptor did affect neither LDH activity nor cell survival. MBP immunostaining is significantly upregulated in E4-pretreated groups at a concentration of 5mg/kg/day and 50mg/kg/day E4, whereas the MBP-positive area OD ratio is significantly increased in all the E4-treated groups. E4’s antioxidative actions mostly depend on ERα and ERβ, whereas neurogenesis and possibly promyelinating activities might be realized through ERβ. [less ▲]Detailed reference viewed: 17 (7 ULg) Sampling only ten microliters of whole blood for the quantification of poorly soluble drugs: Itraconazole as case studyThiry, Justine ; Evrard, Brigitte ; Nys, Gwenaël et alin Journal of Chromatography. A (2017), 1479Nowadays in animal studies, it is important to comply with the so-called Three Rs rule by replacing or reducing the number of tested animals. Volumetric absorptive microsampling (VAMS) can be used to ... [more ▼]Nowadays in animal studies, it is important to comply with the so-called Three Rs rule by replacing or reducing the number of tested animals. Volumetric absorptive microsampling (VAMS) can be used to collect small quantities (10 or 20 µL) of whole blood, thereby limiting the amount of animals needed. In this study, a quantitative method was developed and subsequently validated for the poorly soluble drug itraconazole (ITZ) using VAMS and ultra-high performance liquid chromatography (UHPLC) coupled to tandem mass spectrometry (MS). A proof of concept study showed that the optimized method is applicable to test the bioavailability of drug formulations containing ITZ. Using VAMS, smaller blood volumes can be taken per sampling point (10-20 µL instead of the conventional 0.2-0.5 mL) avoiding the sacrifice of animals. Moreover, the same rats can be used to compare different drug formulations which strengthens the validity of the results. In long-term bioavailability studies, it is necessary to guarantee the stability of the tested drugs supported on VAMS devices. In this study, we show that ITZ was only stable for 24 hours after collection with VAMS, but for at least two weeks by the storage of extracted samples at -80°C. [less ▲]Detailed reference viewed: 11 (2 ULg) Membrane Interactions of Natural Cyclic Lipodepsipeptides of the Viscosin GroupGeudens, Niels; Nasir, Mehmet Nail ; Crowet, Jean-Marc et alin Biochimica et Biophysica Acta - Biomembranes (2017), 1859(3), 331-339Many Pseudomonas spp. produce cyclic lipodepsipeptides (CLPs), which, besides their role in biological functions such as motility, biofilm formation and interspecies interactions, are antimicrobial. It ... [more ▼]Many Pseudomonas spp. produce cyclic lipodepsipeptides (CLPs), which, besides their role in biological functions such as motility, biofilm formation and interspecies interactions, are antimicrobial. It has been established that interaction with the cellular membrane is central to the mode of action of CLPs. In this work, we focus on the CLPs of the so-called viscosin group, aiming to assess the impact of the main structural variations observed within this group on both the antimicrobial activity and the interaction with model membranes. The antimicrobial activity of viscosin, viscosinamide A, WLIP and pseudodesmin A were all tested on a broad panel of mainly Gram-positive bacteria. Their capacity to permeabilize or fuse PG/PE/cardiolipin model membrane vesicles is assessed using fluorescent probes. We find that the Glu2/Gln2 structural variation within the viscosin group is the main factor that influences both the membrane permeabilization properties and the minimum inhibitory concentration of bacterial growth, while the configuration of the Leu5 residue has no apparent effect. The CLPmembrane interactions were further evaluated using CD and FT-IR spectroscopy on model membranes consisting of PG/PE/cardiolipin or POPC with or without cholesterol. In contrast to previous studies, we observe no conformational change upon membrane insertion. The CLPs interact both with the polar heads and aliphatic tails of model membrane systems, altering bilayer fluidity, while cholesterol reduces CLP insertion depth [less ▲]Detailed reference viewed: 16 (3 ULg) Exome copy number variation detection: Use of a pool of unrelated healthy tissue as reference sampleWenric, Stéphane ; Sticca, Tiberio ; CABERG, Jean-Hubert et alin Genetic Epidemiology (2017)An increasing number of bioinformatic tools designed to detect CNVs (copy number variants) in tumor samples based on paired exome data where a matched healthy tissue constitutes the reference have been ... [more ▼]An increasing number of bioinformatic tools designed to detect CNVs (copy number variants) in tumor samples based on paired exome data where a matched healthy tissue constitutes the reference have been published in the recent years. The idea of using a pool of unrelated healthy DNA as reference has previously been formulated but not thoroughly validated. As of today, the gold standard for CNV calling is still aCGH but there is an increasing interest in detecting CNVs by exome sequencing. We propose to design a metric allowing the comparison of two CNV profiles, independently of the technique used and assessed the validity of using a pool of unrelated healthy DNA instead of a matched healthy tissue as reference in exome-based CNV detection. We compared the CNV profiles obtained with three different approaches (aCGH, exome sequencing with a matched healthy tissue as reference, exome sequencing with a pool of eight unrelated healthy tissue as reference) on three multiple myeloma samples. We show that the usual analyses performed to compare CNV profiles (deletion/amplification ratios and CNV size distribution) lack in precision when confronted with low LRR values, as they only consider the binary status of each CNV. We show that the metric-based distance constitutes a more accurate comparison of two CNV profiles. Based on these analyses, we conclude that a reliable picture of CNV alterations in multiple myeloma samples can be obtained from whole-exome sequencing in the absence of a matched healthy sample. [less ▲]Detailed reference viewed: 23 (6 ULg) On the evaluation of interface quality in concrete repair system by means of impact-echo signal analysisGarbacz, Andrzej; Piotrowski, Tomacz; Courard, Luc et alin Construction and Building Materials (2017), 134According to Concrete Repair Manual as well as ACI 562-16 and European EN 1504-10 standards, a bond strength as a measure of adhesion is one the main feature of repair system necessary to be assessed. The ... [more ▼]According to Concrete Repair Manual as well as ACI 562-16 and European EN 1504-10 standards, a bond strength as a measure of adhesion is one the main feature of repair system necessary to be assessed. The most common laboratory and engineering method for bond strength evaluation is pull-off test. This is however a semi-destructive method that needs a repair in a place of measurement. Recently, the great interest in nondestructive techniques (NDT) development is noted. Impact-Echo (IE) is considered as one of the most promising methods for this purpose. In this paper, the study on the usability the IE test based on frequency spectrum analysis for bond strength evaluation is analyzed. Both Finite Element Method (FEM) simulation and experimental tests were performed in order to obtain potential relations between IE frequency spectrum and parameters characterizing concrete substrate quality that may affect the final bond strength and the real value of pull-off bond strength measured on samples as well. It was concluded that the IE method can be a useful tool for interface quality and bond strength evaluations in concrete repair system. However, more complex signal analysis, e.g. wavelet analysis, should be considered in the future. [less ▲]Detailed reference viewed: 21 (3 ULg) L’ÉVALUATION DES POLITIQUES PUBLIQUES DANS LE CHAMP DE LA COOPÉRATION AU DÉVELOPPEMENT BELGE : LE CAS DU SERVICE DE L’ÉVALUATION SPÉCIALEContor, Justine in Pyramides : Revue du Laboratoire d'Etudes et de Recherches en Administration Publique (2017)Cette contribution s’intéresse à l'évolution institutionnelle de l'évaluation au sein de la coopération belge au développement et plus spécifiquement à notre cas d’étude : le Service de l’Evaluation ... [more ▼]Cette contribution s’intéresse à l'évolution institutionnelle de l'évaluation au sein de la coopération belge au développement et plus spécifiquement à notre cas d’étude : le Service de l’Evaluation Spéciale de la coopération belge au développement (SES). Nous présenterons dans ce document les raisons de la création de ce service au début des années 2000. En effet, le SES, avec d’autres acteurs, est le résultat d’une grande réforme de la coopération issue d’une lourde crise. Nous reviendrons sur son mandat, sur ses spécificités organisationnelles (ressources financières et humaines) ainsi que son cadre de référence normatif. La question de la culture évaluative sera questionnée, ainsi que son lien avec l’émergence du New Public Management dans la politique de coopération au développement. Enfin, nous questionnerons la légitimité d’une structure telle que le SES au regard d’un cadrage théorique mixte (Scott, 1995 ; Suchmann, 1995) et de la théorie des parties prenantes. [less ▲]Detailed reference viewed: 23 (0 ULg) Can DEM time series produced by UAV be used to quantify diffuse erosion in an agricultural watershed?Pineux, Nathalie ; Lisein, Jonathan ; Swerts, Gilles et alin Geomorphology (2017), 280Erosion and deposition modelling should rely on field data. Currently these data are seldom available at large spatial scales and/or at high spatial resolution. In addition, conventional erosion ... [more ▼]Erosion and deposition modelling should rely on field data. Currently these data are seldom available at large spatial scales and/or at high spatial resolution. In addition, conventional erosion monitoring approaches are labour intensive and costly. This calls for the development of new approaches for field erosion data acquisition. As a result of rapid technological developments and low cost, unmanned aerial vehicles (UAV) have recently become an attractive means of generating high resolution digital elevation models (DEMs). The use of UAV to observe and quantify gully erosion is now widely established. However, in some agro-pedological contexts, soil erosion results from multiple processes, including sheet and rill erosion, tillage erosion and erosion due to harvest of root crops. These diffuse erosion processes often represent a particular challenge because of the limited elevation changes they induce. In this study,we propose to assess the reliability and development perspectives of UAV to locate and quantify erosion and deposition in a context of an agricultural watershed with silt loam soils and a smooth relief. Erosion and deposition rates derived from high resolution DEM time series are compared to field measurements. The UAV technique demonstrates a high level of flexibility and can be used, for instance, after a major erosive event. It delivers a very high resolution DEM(pixel size: 6 cm) which allows us to compute high resolution runoff pathways. This could enable us to precisely locate runoff management practices such as fascines. Furthermore, the DEMs can be used diachronically to extract elevation differences before and after a strongly erosive rainfall and be validated by field measurements. While the analysis for this study was carried out over 2 years, we observed a tendency along the slope from erosion to deposition. Erosion and deposition patterns detected at the watershed scale are also promising. Nevertheless, further development in the processing workflow of UAV data is required in order to make this technique accurate and robust enough for detecting sediment movements in an agricultural watershed affected by diffuse erosion. This area of investigation holdsmuch potential as the images processing is relatively new and expanding. [less ▲]Detailed reference viewed: 15 (3 ULg) Optimized approach to retrieve information on atmospheric carbonyl sulfide (OCS) above the Jungfraujoch station and change in its abundance since 1995Lejeune, Bernard ; Mahieu, Emmanuel ; Vollmer, M. K. et alin Journal of Quantitative Spectroscopy & Radiative Transfer (2017), 186In this paper, we present an optimized retrieval strategy for carbonyl sulfide (OCS), using Fourier transform infrared (FTIR) solar observations made at the high-altitude Jungfraujoch station in the Swiss ... [more ▼]In this paper, we present an optimized retrieval strategy for carbonyl sulfide (OCS), using Fourier transform infrared (FTIR) solar observations made at the high-altitude Jungfraujoch station in the Swiss Alps. More than 200 lines of the nu3 fundamental band of OCS have been systematically evaluated and we selected 4 microwindows on the basis of objective criteria minimizing the effect of interferences, mainly by solar features, carbon dioxide and water vapor absorption lines, while maximizing the information content. Implementation of this new retrieval strategy provided an extended time series of the OCS abundance spanning the 1995-2015 time period, for the study of the long-term trend and seasonal variation of OCS in the free troposphere and stratosphere. Three distinct periods characterize the evolution of the tropospheric partial columns: a first decreasing period (1995-2002), an intermediate increasing period (2002-2008), and the more recent period (2008-2015) which shows no significant trend. Our FTIR tropospheric and stratospheric time series are compared with new in situ gas chromatography mass spectrometry (GCMS) measurements performed by Empa (Laboratory for Air Pollution/Environmental Technology) at the Jungfraujoch since 2008, and with space-borne solar occultation observations by the ACE-FTS instrument on-board the SCISAT satellite, respectively, and they show good agreement. The OCS signal recorded above Jungfraujoch appears to be closely related to anthropogenic sulfur emissions. [less ▲]Detailed reference viewed: 68 (19 ULg) Extreme intra-clutch egg size dimorphism is not coupled with corresponding differences in antioxidant capacity and stable isotopes between eggsPoisbleau, Maud; Beaulieu, Michaël; Dehnhard, Nina et alin Comparative Biochemistry and Physiology Part A : Molecular & Integrative Physiology (2017), 205Oviparous females need to allocate resources optimally to their eggs in order to maximize their ﬁtness. Among these resources, dietary antioxidants, acquired by females and transferred to the eggs during ... [more ▼]Oviparous females need to allocate resources optimally to their eggs in order to maximize their ﬁtness. Among these resources, dietary antioxidants, acquired by females and transferred to the eggs during egg formation, can greatly affect the development and survival of the embryo and chick. In crested penguins, incubation starts after the second and last egg is laid and, as opposed to many other bird species, this egg hatches ﬁrst, thereby enhancing the survival of the chick. Here, we assessed whether antioxidant and isotopic composition could underlie these differences between eggs within clutches of southern rockhopper penguins (Eudyptes chrysocome chrysocome). The second-laid egg had higher total antioxidant capacity than the ﬁrst-laid egg, although this was not due to higher antioxidant concentration but to its higher mass. This suggests that resources are allocated by females at a constant rate in both eggs within clutches. Accordingly, we found a strong correlation for isotopic compositions between eggs suggesting that resources were allocated similarly to each egg within the clutch. Overall, we found little evidence for a signiﬁcant role of antioxidant and isotopic compositions to explain differences in terms of embryo/chick development between eggs in crested penguins. However, since our results suggest a constant rate of antioxidant transfer from females to eggs, limiting the mass of the ﬁrst-laid egg might represent a strategy for females to spare antioxidant defences and preserve self-maintenance. [less ▲]Detailed reference viewed: 9 (0 ULg) Caryl Phillips’s The Lost Child: A Story of Loss and ConnectionLedent, Bénédicte ; O'Callaghan, Evelynin Ariel : A Review of International English Literature (2017)Detailed reference viewed: 39 (3 ULg) Administrative Change in the EU: a Cross-Country Empirical Study on the Contextual Determinants of NPM Reform RhetoricEsposito, Giovanni ; Gaeta, Giuseppe Lucio; Trasciani, Giorgiain Annals of Public and Cooperative Economics (2017)Framed within the paradigm of New Public Management (NPM), structural reforms in the EU aimed at modernizing the public administrations of Member States (MSs) have long since been a priority area of the ... [more ▼]Framed within the paradigm of New Public Management (NPM), structural reforms in the EU aimed at modernizing the public administrations of Member States (MSs) have long since been a priority area of the EU’s economic policy. Since the 1990s, these reforms have been sharply intensified across European countries with the declared purpose of enhancing economy, efficiency and effectiveness in their national public sectors’ organizations. In line with the European Commission’s recent research initiatives in search for novel quantitative data on NPM in the EU, this paper studies European parties’ NPM reform rhetoric. More specifically, it investigates the MSs’ institutional, economic and political context within which parties have declared their intention of reforming national administrative systems. Thus, it sheds light on the MSs’ domestic factors that are associated with the diffusion of the NPM values across the political discourse of EU’s national parties. [less ▲]Detailed reference viewed: 24 (4 ULg) Computerized adaptive testing with R: Recent updates of the package catRMagis, David ; Barrada, Juan Ramonin Journal of Statistical Software (2017), 76(1), 1-19The purpose of this paper is to list the recent updates of the R package catR. This package allows for generating response patterns under a computerized adaptive testing (CAT) framework with underlying ... [more ▼]The purpose of this paper is to list the recent updates of the R package catR. This package allows for generating response patterns under a computerized adaptive testing (CAT) framework with underlying item response theory (IRT) models. Among the most important updates, well-known polytomous IRT models are now supported by catR; several item selection rules have been added; and it is now possible to perform post-hoc simulations. Some functions were also rewritten or withdrawn to improve the usefulness and performances of the package. [less ▲]Detailed reference viewed: 68 (1 ULg) La « personnalité antisociale », antithèse de la psychopathologieEnglebert, Jérôme ; Adam, Christophein Déviance et Société (2017), 41(1), L’article propose une réflexion critique et clinique sur la notion de « personnalité antisociale », largement usitée dans le domaine de la nosographie des troubles mentaux et des pratiques « psy- » au ... [more ▼]L’article propose une réflexion critique et clinique sur la notion de « personnalité antisociale », largement usitée dans le domaine de la nosographie des troubles mentaux et des pratiques « psy- » au sein du système de justice pénale. Notre réflexion débutera par une généalogie du vocable dans différentes versions de la classification psychiatrique, depuis les années cinquante jusqu’aujourd’hui, et plus particulièrement celle faisant autorité du Manuel statistique et diagnostique des troubles mentaux (DSM). L’absence de raisonnement sociologique dans l’usage d’une notion impliquant pourtant la référence au « social » sera discutée ainsi que ses évolutions historiques. Ensuite, la démonstration de l’antithèse que cette notion constitue pour une perspective psychopathologique digne de ce nom – dynamique, compréhensive et phénoménologique – sera développée en six arguments majeurs et plurivoques, tantôt empiriques et cliniques, tantôt théoriques. [less ▲]Detailed reference viewed: 44 (2 ULg) An Analysis of the Interaction Effect between Employee Technical and Emotional Competencies in Emotionally Charged Service EncountersDelcourt, Cécile ; Gremler, Dwayne; De Zanet, Fabrice et alin Journal of Service Management (2017), 28Purpose—Customers often experience negative emotions during service experiences. The ways that employees manage customers’ emotions and impressions about whether the service provider is concerned for them ... [more ▼]Purpose—Customers often experience negative emotions during service experiences. The ways that employees manage customers’ emotions and impressions about whether the service provider is concerned for them in such emotionally charged service encounters (ECSEs) is crucial, considering the criticality of the encounter. Drawing on cognitive appraisal theory, this study proposes that two key competencies—employee emotional competence (EEC) and employee technical competence (ETC)—affect negative customer emotions and customer satisfaction with employee response in ECSEs. Design/methodology—This study relies on a video-based experiment that depicts a customer involved in an ECSE as a service provider delivers bad news to him. The hypothesis tests use a two-way independent analysis of covariance. Results—Both emotional and technical competencies must be displayed to improve the customer experience in an ECSE. When EEC is low, ETC does not decrease negative customer emotions or increase customer satisfaction with employee response. When EEC is high, ETC instead has a significant impact on both customer outcomes. Practical implications—Managers must train employees to develop both technical and emotional competencies. Employees who demonstrate only one type cannot temper customers’ emotions or enhance their perceptions of the employees’ response as well as can those strong in both competencies. Originality/value—Using a video-based experiment, this study examines the moderating role of EEC in the relationship between ETC and two key aspects of the customer experience in an ECSE (negative customer emotions and customer satisfaction with employee responses) following the delivery of bad news. [less ▲]Detailed reference viewed: 56 (6 ULg) Embedded solids of any dimension in the X-FEM. Part I - Building a dedicated P1 function spaceDuboeuf, Frédéric ; Béchet, Eric in Finite Elements in Analysis and Design (2017)This paper focuses on the design of a dedicated P1 function space to model elliptic boundary value problem on a manifold embedded in a space of higher dimension. Using the traces of the linear P1 shape ... [more ▼]This paper focuses on the design of a dedicated P1 function space to model elliptic boundary value problem on a manifold embedded in a space of higher dimension. Using the traces of the linear P1 shape functions, it introduces an algorithm to reduce the function space into an equivalent space having the same properties than a P1 Lagrange approximation. Convergence studies involving problems of codimension one or two embedded in 2D or 3D show good accuracy with regard to classical finite element and analytical solutions. The effects of the relative position of the domain with respect to the mesh are studied in a sensitivity analysis; it illustrates how the proposed solution allows to keep the condition number bounded. A comparative study is performed with the method introduced by Olshanskii et al. 2009 on a closed surface to validate our approach. The robustness of the proposed approach is investigated with regard to their method and that of Burman et al. 2016. This paper is the first in a series of two, on the topic of embedded solids of any dimension within the context of the extended finite element method. It investigates problems involving borderless domains or domains with boundary subject to Dirichlet constraint defined only on the boundaries of the bulk mesh, while the forthcoming paper overcomes this limitation by introducing a new stable Lagrange multiplier space for Dirichlet boundary condition (and more generally stiff condition), that is valid for every combination of the background mesh and manifold dimensions. The combination of both algorithms allows to handle any embedding i.e. 1D, 2D and 3D problems embedded in 2D or 3D background meshes. [less ▲]Detailed reference viewed: 14 (3 ULg) Troubles du comportement alimentaire et régulation émotionnelleEnglebert, Jérôme in Psychosomatique Relationnelle (2017), 7Detailed reference viewed: 20 (4 ULg) Impaired familiarity in individuals at risk for Alzheimer's disease: Commentary on Schoemaker et al. (2016)Bastin, Christine ; Besson, Gabriel in Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring (2017), 6Detailed reference viewed: 26 (3 ULg) Seasonal characterization of the nutrients state in Oualidia Lagoon (Moroccan Atlantic coast)Damsiri, Zainab; Natij, L.; Khalil, Karima et alin Journal of Materials and Environmental Science (2017), 8(1), 67-77The nutrient cycle in Oualidia lagoon, on the Atlantic Moroccan coast, was studied at both spatial and temporal scales, covering spring and summer conditions. Water samples were collected bimonthly at ... [more ▼]The nutrient cycle in Oualidia lagoon, on the Atlantic Moroccan coast, was studied at both spatial and temporal scales, covering spring and summer conditions. Water samples were collected bimonthly at high tide from March to August during years 2011 and 2012 at six stations distributed throughout the lagoon. The physico- chemistry (temperature, salinity, dissolved O2) and nutrient enrichment of the lagoon surface water were monitored. The average nutrient concentration of surface water were 14.4 μmol.l-1 and 28.1 μmol.l-1 for NH4+, 20.4 μmol.l-1 and 19.9 μmol.l-1 for PO43- and 3.7 μmol.l-1 and 7.6 μmol.l-1 for NO2- in 2011 and 2012, respectively. Strong seasonal differences of nutrient distribution at the different stations were noticed. Temperature, salinity and dissolved O2 were correlated with nutrient concentrations, all parameters showing low spatial (inter-station) variability. Hydrological conditions exert a major control on the nutrient cycling in the lagoon. Results of this study are important to increase the richness on the scientific knowledge of nutrient dynamics along the Moroccan Atlantic coast, particularly in the semi-enclosed lagoons that are important transitional systems. [less ▲]Detailed reference viewed: 11 (1 ULg) Study of the photocatalytic activity of Fe3+, Cr3+, La3+ and Eu3+ single-doped and co-doped TiO2 catalysts produced by aqueous sol-gel processingMalengreaux, Charline; Pirard, Sophie ; Léonard, Géraldine et alin Journal of Alloys and Compounds (2017), 691An aqueous sol-gel process, previously developed for producing undoped and Cu2+, Ni2+, Zn2+ or Pb2+ doped TiO2 photocatalysts with remarkably high photocatalytic activity without requiring any calcination ... [more ▼]An aqueous sol-gel process, previously developed for producing undoped and Cu2+, Ni2+, Zn2+ or Pb2+ doped TiO2 photocatalysts with remarkably high photocatalytic activity without requiring any calcination step, has been adapted to produce Fe3+, Cr3+, La3+ or Eu3+ single-doped TiO2 photocatalysts as well as La3+-Fe3+ and Eu3+-Fe3+ co-doped TiO2 catalysts. The physicochemical properties of the obtained catalysts have been characterized using a suite of complementary techniques, including ICP-AES, XRD, UV-Vis spectroscopy, nitrogen adsorption-desorption and Fe-57 Mössbauer. The active crystalline phase is obtained without requiring any calcination step and all the different catalysts are composed of nanocrystallites of anatase with a size of 6-7 nm and a high specific surface area varying from 181 to 298 m² g-1. In this study, the effect of the NO3:Ti(IV) mole ratio used to induce the peptisation reaction during the synthesis has been studied and the results revealed that this ratio can influence significantly the textural properties of the resulting catalyst. A screening of the photocatalytic activity of the undoped and Fe3+, Cr3+, La3+ or Eu3+ single-doped and co-doped photocatalysts has been performed by evaluating the degradation of 4-nitrophenol under UV-Visible light (330 nm < λ < 800 nm). This study suggests that the photocatalytic activity is significantly influenced by the dopant nature and content with an optimal dopant content being observed in the case of Fe3+ or La3+ single-doped as well as in the case of La3+-Fe3+ and Eu3+-Fe3+ co-doped catalysts. In the case of Cr3+ single-doped catalysts, a detrimental effect of the dopant on the photocatalytic degradation of 4-nitrophenol has been observed while no significant influence of the dopant has been detected in the case of Eu3+ single-doped catalysts. The role of the different dopants in modulating the photocatalytic activity is discussed. [less ▲]Detailed reference viewed: 38 (6 ULg) Continuous Production of Itraconazole-based Solid Dispersions by Hot Melt Extrusion: Preformulation, Optimization and Design Space Determination.Thiry, Justine ; Lebrun, Pierre; Vinassa, Chloé et alin International Journal of Pharmaceutics (2016), 515(1-2), 114-124Detailed reference viewed: 45 (8 ULg) Interpellation du genre et sujets mélancoliques. Butler lectrice d’AlthusserBorotto, Jessica in Cahiers du GRM (2016), 8Cet article propose d’explorer la manière dont Judith Butler remobilise la thèse althussérienne de l’interpellation dans La Vie psychique du pouvoir . Nous essaierons de saisir les éléments qui nous ... [more ▼]Cet article propose d’explorer la manière dont Judith Butler remobilise la thèse althussérienne de l’interpellation dans La Vie psychique du pouvoir . Nous essaierons de saisir les éléments qui nous paraissent enrichir la problématique althussérienne, suggérant que la compréhension de la dimension psychique du pouvoir qui ressort de sa lecture permet de complexifier la relation du sujet au pouvoir. Afin de tisser des liens précis entre l’interpellation chez Althusser et la subjectivation chez Butler, nous examinerons d’abord le rôle que Nietzsche et Foucault recouvrent dans la formulation de la théorie de la subjectivation chez Butler. Ensuite, il s’agit de comprendre en quoi la matérialité et l’ambiguïté des mécanismes de subjectivation, qui déjà caractérisent l’interpellation althussérienne, deviennent chez Butler les sources d’une relation critique aux conditions d’émergence du sujet. Enfin nous préciserons comment elle mobilise de telles sources pour élaborer cette figure de la psychanalyse qu’est la mélancolie et pour décrire sa transformation en deuil. [less ▲]Detailed reference viewed: 15 (1 ULg) Comprehension of an organosolv process for lignin extraction on Festuca arundinacea and monitoring of the cellulose degradationSchmetz, Quentin ; Maniet, Guillaume ; Jacquet, Nicolas et alin Industrial Crops and Products (2016), 94It is commonly accepted that the current society needs to partially substitute fossil resources by renewable ones. Among many solutions, one approach consists in the development of biorefinery involving ... [more ▼]It is commonly accepted that the current society needs to partially substitute fossil resources by renewable ones. Among many solutions, one approach consists in the development of biorefinery involving lignocellulosic biomass to produce bio-based materials and fuels. This study focuses on the comprehension of an organosolv treatment designed to break the complex lignocellulosic structure for high purity lignin extraction from tall fescue (Festuca arundinacea Schreb.). This grass benefits from an increasing interest in Western Europe and has been suggested as feedstock for biorefinery. However, its use as material for high purity lignin production has not been determined yet. Ethanol/water, 92/8% [v/v] with H2SO4 0.32 M was investigated at pilot scale under conventional heating (5 °C min−1 during 30 min and stabilized at 148 °C for 5 min). Precipitated lignin were analyzed as well as the composition of side-stream products (recovered cellulosic pulp and the aqueous hydrolysate). Lignin has been recovered at a purity level of 90% with a yield of 60%. The main contaminants were nitrogen containing compounds and degraded hemicelluloses. 2D-HSQC NMR (Two Dimension-Heteronuclear Single Quantum Correlation Nuclear Magnetic Resonance) revealed a co-extraction of ferulates and coumarates function as well as arabinoxylan. Cellulose was recovered at 53% purity with 60% yield. The conditions appear to be too harsh for tall fescue and led to significant amount of cellulose degradation. A process using a lower alcohol concentration will be developed to provide better yields of both cellulose and lignin. [less ▲]Detailed reference viewed: 61 (15 ULg) Learning from Incidents and Incident Reporting: Safety Governance at a Belgian Nuclear Research CenterRossignol, Nicolas ; Van Oudheusden, Michiel in Science, Technology & Human Values (2016), Online FirstThis article examines how incidents are governed in a Belgian Nuclear Research Center by way of an incident reporting system named REX. Drawing on a documentary analysis of incident reports, interviews ... [more ▼]This article examines how incidents are governed in a Belgian Nuclear Research Center by way of an incident reporting system named REX. Drawing on a documentary analysis of incident reports, interviews and focus groups with personnel, it illustrates how REX enacts a safety governmentality centered on identifying incident causes and culprits. As this governmentality mode obscures the epistemic and political character of incidents, it closes down important opportunities for collective learning about safety and safety governance. It is argued that joint reflection about incidents and resistances towards incident reporting serve as fruitful starting points for a more reflexive safety governance that makes explicit how decisions are made in high-risk contexts. Social scientists can enhance governance of this kind by pointing to different perceptions and evaluations of incidents and by insisting that contending interpretations are confronted and accounted for. [less ▲]Detailed reference viewed: 13 (3 ULg) EditorialBorotto, Jessica ; Petteni, Oriane ; Wustefeld, Sophie et alin Cahiers du GRM (2016), 10Detailed reference viewed: 15 (6 ULg) SU(3) flavor symmetry breaking in large $N_c$ excited baryonsStancu, Floarea in Physical Review. D : Particles and Fields (2016), 94The $1/N_c$ expansion method for studying the mass spectrum of excited baryons is shortly reviewed together with applications to mixed symmetric states. The $[{\bf 70, \ell^+}]$ multiplet, belonging to ... [more ▼]The $1/N_c$ expansion method for studying the mass spectrum of excited baryons is shortly reviewed together with applications to mixed symmetric states. The $[{\bf 70, \ell^+}]$ multiplet, belonging to the $N$ = 2 band, is reanalyzed, with emphasis on hyperons and the SU(3) symmetry breaking operators entering the mass formula to first order. An important result is that the hierarchy of masses as a function of strangeness is correctly reproduced for all multiplets. Predictions for unknown excited hyperons to SU(6) $\times$ O(3) multiplets are made. [less ▲]Detailed reference viewed: 10 (2 ULg) Effect of the Extraction Technique, Heating Time and Cryogenic Grinding (N2 at -196°C) on the Composition of Cumin Seeds Volatile OilMékaoui, R; Benkaci-Ali, Farid; Scholl, Georges et alin Journal of Essential Oil-Bearing Plants [=JEOBP] (2016), 19(8), 1903-1919Two techniques of extraction of essential oils (Steam distillation assisted by microwave (SDAM) and hydrodistillation assisted by microwave (HDAM)) are respectively advanced steam distillation (SD) and ... [more ▼]Two techniques of extraction of essential oils (Steam distillation assisted by microwave (SDAM) and hydrodistillation assisted by microwave (HDAM)) are respectively advanced steam distillation (SD) and hydrodistillation techniques (HD), in which a microwave oven is used in the extraction process. They are considered as accelerated techniques extraction performed at atmospheric pressure. The cryogrinding (CG) showed a difference on the yields and aromatic profile comparing to the sample grinding. Isolation and concentration of volatile compounds are performed by a single stage for the extraction of volatile oil from Algerian (Sahara) Cuminum cyminum seeds (CCS). The chemical composition of the essential oil of this plant as a function of extraction time was also studied. The major components and family classes showed a significant variation with the extraction time. Gas chromatography (GC), GCxGC-mass spectrometry (GCxGC-MS)] were utilised for qualitative and quantitative analysis of essential oils extracted by these two methods. The major compounds are cumin aldehyde (HDAM-CG: 20.50-53.35 %, SDAM-CG: 21.68 66.6 %), p-cymene (HDAM-CG: 14.1-37.54 %, SDAM-CG: 6.06-20.18 %), β-pinene (HDAM-CG: 4.53-14.74 %, SDAM-CG: 4.3-32.65 %) and γ-terpinene (HDAM-CG: 1.26-14.70 %, SDAM-CG: 5.13-18.23 %). [less ▲]Detailed reference viewed: 11 (1 ULg) La SNCB : prête pour la libéralisation totale du rail ?Gautier, Axel ; Salem, Imanin Regards Economiques (2016)La SNCB n’a pas su s’adapter à la libéralisation du fret ferroviaire faute de rentabilité. Dans la perspective d’une libéralisation du transport de passagers annoncée pour 2023, nous évaluons les ... [more ▼]La SNCB n’a pas su s’adapter à la libéralisation du fret ferroviaire faute de rentabilité. Dans la perspective d’une libéralisation du transport de passagers annoncée pour 2023, nous évaluons les performances de l’entreprise. Notre étude met en avant un déficit de productivité et une contribution faible des passagers aux coûts par rapport à d’autres opérateurs européens. [less ▲]Detailed reference viewed: 32 (2 ULg) New data on the incertae sedis biota and foraminifera of the mid-Famennian Baelen Member (Late Devonian, eastern Belgium)Vachard, Daniel; Dreesen, Roland; Mottequin, Bernard et alin Paleobiodiversity and Paleoenvironments (2016), 21The Baelen mud mounds in eastern Belgium represent a local member of the mid-Famennian Souverain-Pré Formation (an important carbonate interval within the Condroz Sandstone Group). The lower part of this ... [more ▼]The Baelen mud mounds in eastern Belgium represent a local member of the mid-Famennian Souverain-Pré Formation (an important carbonate interval within the Condroz Sandstone Group). The lower part of this member contains silty bioclastic wackestones and packstones that are particularly rich in the problematical algae Serrisinella and Dreesenullella. Plurilocular foraminifera (Septabrunsiina and Baelenia) and rare solitary rugose corals (Neaxon? sp.) occur within crinoidal grainstones (tempestites) interfingering with the latter bioclastic wacke-/packstones and red-stained stromatactoid spiculitic mudstones (carbonate mound core facies). Although Serrisinella is quite common in other mid- and late Famennian limestones, of Belgium, Dreesenulella is almost endemic of the Baelen Member. Both genera apparently inhabited the muddy sediment-water interface, constituting meadows probably in zones of intermittently strong bottom currents. The taxonomic similarities between Dreesenulella and Saccamminopsis are discussed, as well as their possible affinities with the Xenophophyrea and Kokomiacea. Moreover, the first stages of the Septabrunsiina–Baelenia foraminiferal lineage are analysed in detail. The taxonomic and palaoecological positioning of Serrissinella and Dreesenulella adds to the discussion about the palaeobathymetry of the Baelen mud mounds and corroborates sedimentological evidence for their relatively shallow carbonate ramp depositional setting. [less ▲] Insights on Molecular Mechanisms of Chondrocytes Death in OsteoarthritisCHARLIER, Edith ; RELIC, Biserka ; Deroyer, Céline et alin International Journal of Molecular Sciences (2016)Abstract: Osteoarthritis (OA) is a joint pathology characterized by progressive cartilage degradation. Medical care is mainly based on alleviating pain symptoms. Compelling studies report the presence of ... [more ▼]Abstract: Osteoarthritis (OA) is a joint pathology characterized by progressive cartilage degradation. Medical care is mainly based on alleviating pain symptoms. Compelling studies report the presence of empty lacunae and hypocellularity in cartilage with aging and OA progression, suggesting that chondrocyte cell death occurs and participates to OA development. However, the relative contribution of apoptosis per se in OA pathogenesis appears complex to evaluate. Indeed, depending on technical approaches, OA stages, cartilage layers, animal models, as well as in vivo or in vitro experiments, the percentage of apoptosis and cell death types can vary. Apoptosis, chondroptosis, necrosis, and autophagic cell death are described in this review. The question of cell death causality in OA progression is also addressed, as well as the molecular pathways leading to cell death in response to the following inducers: Fas, Interleukin-1 (IL-1 ), Tumor Necrosis factor- (TNF- ), leptin, nitric oxide (NO) donors, and mechanical stresses. Furthermore, the protective role of autophagy in chondrocytes is highlighted, as well as its decline during OA progression, enhancing chondrocyte cell death; the transition being mainly controlled by HIF-1 /HIF-2 imbalance. Finally, we have considered whether interfering in chondrocyte apoptosis or promoting autophagy could constitute therapeutic strategies to impede OA progression. [less ▲]Detailed reference viewed: 9 (4 ULg) High resolution (1 km) positive degree-day modelling of Greenland ice sheet surface mass balance, 1870–2012 using reanalysis dataWilton, D.; Jowett, A.; Hanna, E. et alin Journal of Glaciology (2016), onlineWe show results from a positive degree-day (PDD) model of Greenland ice sheet (GrIS) surface mass balance (SMB), 1870–2012, forced with reanalysis data. The model includes an improved daily temperature ... [more ▼]We show results from a positive degree-day (PDD) model of Greenland ice sheet (GrIS) surface mass balance (SMB), 1870–2012, forced with reanalysis data. The model includes an improved daily temperature parameterization as compared with a previous version and is run at 1 km rather than 5 km resolution. The improvements lead overall to higher SMB with the same forcing data. We also compare our model with results from two regional climate models (RCMs). While there is good qualitative agreement between our PDD model and the RCMs, it usually results in lower precipitation and lower runoff but approximately equivalent SMB: mean 1979–2012 SMB (± standard deviation), in Gt a−1, is 382 ± 78 in the PDD model, compared with 379 ± 101 and 425 ± 90 for the RCMs. Comparison with in situ SMB observations suggests that the RCMs may be more accurate than PDD at local level, in some areas, although the latter generally compares well. Dividing the GrIS into seven drainage basins we show that SMB has decreased sharply in all regions since 2000. Finally we show correlation between runoff close to two calving glaciers and either calving front retreat or calving flux, this being most noticeable from the mid-1990s. [less ▲]Detailed reference viewed: 22 (0 ULg) The role of AIP mutations in pituitary adenomas: 10 years onDaly, Adrian ; BECKERS, Albert in Endocrine (2016)Detailed reference viewed: 17 (4 ULg) Aging of monolithic zirconia dental prostheses: Protocol for a 5-year prospective clinical study using ex vivo analysesKOENIG, Vinciane ; Wulfman, Claudine; DERBANNE, Mathieu et alin Contemporary Clinical Trials Communication (2016), 4Background: Recent introduction of computer-aided design/computer-aided manufacturing (CAD/CAM) monolithic zirconia dental prostheses raises the issue of material low thermal degradation (LTD), a ... [more ▼]Background: Recent introduction of computer-aided design/computer-aided manufacturing (CAD/CAM) monolithic zirconia dental prostheses raises the issue of material low thermal degradation (LTD), a wellknown problem with zirconia hip prostheses. This phenomenon could be accentuated by masticatory mechanical stress. Until now zirconia LTD process has only been studied in vitro. This work introduces an original protocol to evaluate LTD process of monolithic zirconia prostheses in the oral environment and to study their general clinical behavior, notably in terms of wear. Methods/design: 101 posterior monolithic zirconia tooth elements (molars and premolars) are included in a 5-year prospective clinical trial. On each element, several areas between 1 and 2 mm2 (6 on molars, 4 on premolars) are determined on restoration surface: areas submitted or non-submitted to mastication mechanical stress, glazed or non-glazed. Before prosthesis placement, ex vivo analyses regarding LTD and wear are performed using Raman spectroscopy, SEM imagery and 3D laser profilometry. After placement, restorations are clinically evaluated following criteria of the World Dental Federation (FDI), complemented by the analysis of fracture clinical risk factors. Two independent examiners perform the evaluations. Clinical evaluation and ex vivo analyses are carried out after 6 months and then each year for up to 5 years. Discussion: For clinicians and patients, the results of this trial will justify the use of monolithic zirconia restorations in dental practice. For researchers, the originality of a clinical study including ex vivo analyses of material aging will provide important data regarding zirconia properties. [less ▲]Detailed reference viewed: 51 (13 ULg) The influence of spatially structured soil properties on tree community assemblages at a landscape scale in the tropical forests of southern CameroonVleminckx, Jason; Doucet, Jean-Louis ; Morin, Julie et alin Journal of Ecology (2016)Species distribution within plant communities results from both the influence of deterministic processes, related to environmental conditions, and neutral processes related to dispersal limitation and ... [more ▼]Species distribution within plant communities results from both the influence of deterministic processes, related to environmental conditions, and neutral processes related to dispersal limitation and stochastic events, the relative importance of each factor depending on the observation scale. Assessing the relative contribution of environment necessitates controlling for spatial dependences among data points. Recent methods, combining multiple regression and Moran's eigenvectors maps (MEM), have been proved successful in disentangling the influence of pure spatial processes related to dispersal limitation, pure environmental variables (not spatially structured) and spatially structured environmental properties. However, the latter influence is usually not testable when using advanced spatial models like MEM. To overcome this issue, we propose an original approach, based on torus-translations and Moran spectral randomizations, to test the fraction of species abundance variation that is jointly explained by space and seven soil variables, using three environmental and tree species abundance data sets (consisting of 120, 52 and 34 plots of 0·2 ha each, located along 101-, 66- and 35-km-long transect-like inventories, respectively) collected in tropical moist forests in southern Cameroon. The overall abundance of species represented by ≥30 individuals, and 27% of these species taken individually, were significantly explained by fine-scale (<5 km) and/or broad-scale (5–100 km) spatially structured variations in soil nutrient concentrations (essentially the concentration of available Mn, Mg and Ca) along the 120-plots area. The number of significant tests considerably decreased when investigating the two smaller data sets, which mostly resulted from low statistical power rather than weaker floristic and/or edaphic variation captured among plots. Synthesis. Our results provide evidence that tree species turnovers are partly controlled by spatially structured concentrations in soil nutrients at scales ranging from few hundreds of metres to c. 100 km, a poorly documented subject in Central African forests. We also highlight the usefulness of our testing procedure to correctly interpret the space-soil fraction of variation partitioning analyses (which always accounted here for the most important part of the soil contribution), as this fraction was sometimes relatively high (R2 values up to c. 0·3) but nearly or not significant. [less ▲]Detailed reference viewed: 12 (3 ULg) Limited Impact of Imatinib in a Murine Model of Sclerodermatouc Chronic Graft-versus-Host DiseaseBelle, Ludovic; Fransolet, Gilles ; Somja, Joan et alin PLoS ONE (2016)Background Sclerodermatous chronic Graft-versus-Host Disease (scl-cGVHD) is one of the most severe form of cGVHD. The Platelet-derived Grotwth Factor (PDGF) and the Transforming Growth Factor-β (TGF-β ... [more ▼]Background Sclerodermatous chronic Graft-versus-Host Disease (scl-cGVHD) is one of the most severe form of cGVHD. The Platelet-derived Grotwth Factor (PDGF) and the Transforming Growth Factor-β (TGF-β) play a significant role in the fibrosing process occurring in scl-cGVHD. This prompted us to assess the impact of the PDGF-r and c-Abl tyrosine kinase inhibitor imatinib on scl-cGVHD. Methods To assess the impact of imatinib on T cell subset proliferation in vivo, Balb/cJ recipient mice were lethally (7 Gy) irradiated and then injected with 10x106 bone marrow cells from B10.D2 mice on day 0. Fourteen days later, 70x106 carboxyfluorescein succinimidyl ester (CFSE)- labeled splenocytes from B10.D2 mice were infused and imatinib or sterile water was administered for 5 days. To induce severe scl-cGVHD, Balb/cJ mice were injected i.v. with 10.106 bone marrow cells and 70.106 splenocytes from B10.D2 donor mice after 7 Gy irradiation. Mice were then given sterile water or imatinib from day +7 after transplantation to the end of the experiment (day +52). Results Imatinib decreased the proliferation of total T cells (P = 0.02), CD8+ T cells (P = 0.01), and of regulatory T cells (Tregs) (P = 0.02) in the spleen. In the severe scl-cGVHD model, imatinib- treated mice had significantly lower levels of PDGF-r phosphorylation than control mice on day 29 after transplantation (P = 0.008). However, scl-cGVHD scores were similar between vehicle- and imatinib-treated mice during the whole experiment, while there was a suggestion for less weight loss in imatinib-treated mice that reached statistical significance at day +52 following transplantation (P = 0.02). [less ▲]Detailed reference viewed: 16 (5 ULg) Correcting circulation biases in a lower-resolution global general circulation model with data assimilationCanter, Martin ; Barth, Alexander ; Beckers, Jean-Marie in Ocean Dynamics (2016)In this study, we aim at developing a new method of bias correction using data assimilation. This method is based on the stochastic forcing of a model to correct bias by directly adding an additional ... [more ▼]In this study, we aim at developing a new method of bias correction using data assimilation. This method is based on the stochastic forcing of a model to correct bias by directly adding an additional source term into the model equations. This method is presented and tested first with a twin experiment on a fully controlled Lorenz ’96 model. It is then applied to the lower-resolution global circulation NEMO-LIM2 model, with both a twin experiment and a real case experiment. Sea surface height observations are used to create a forcing to correct the poorly located and estimated currents. Validation is then performed throughout the use of other variables such as sea surface temperature and salinity. Results show that the method is able to consistently correct part of the model bias. The bias correction term is presented and is consistent with the limitations of the global circulation model causing bias on the oceanic currents. [less ▲]Detailed reference viewed: 18 (5 ULg) Brisons le système, pouvoir aux femmes ! (Padoue, 1974)Borotto, Jessica in Cahiers du GRM (2016), 10Detailed reference viewed: 12 (1 ULg) Introduction du Dossier de traductionBorotto, Jessica ; Cavazzini, Andreain Cahiers du GRM (2016), 10Detailed reference viewed: 11 (0 ULg) In vitro evaluation of biocompatibility of uncoated thermally reduced graphene and carbon nanotube-loaded PVDF membranes with adult neural stem cell-derived neurons and gliaDefteralı, Çağla; Verdejo, Raquel; Majeed, Shahid et alin Frontiers in Bioengineering and Biotechnology (2016), 4(n° 64), Graphene, graphene-based nanomaterials (GBNs), and carbon nanotubes (CNTs) are being investigated as potential substrates for the growth of neural cells. However, in most in vitro studies, the cells were ... [more ▼]Graphene, graphene-based nanomaterials (GBNs), and carbon nanotubes (CNTs) are being investigated as potential substrates for the growth of neural cells. However, in most in vitro studies, the cells were seeded on these materials coated with various proteins implying that the observed effects on the cells could not solely be attributed to the GBN and CNT properties. Here, we studied the biocompatibility of uncoated thermally reduced graphene (TRG) and poly(vinylidene fluoride) (PVDF) membranes loaded with multi-walled CNTs (MWCNTs) using neural stem cells isolated from the adult mouse olfactory bulb (termed aOBSCs). When aOBSCs were induced to differentiate on coverslips treated with TRG or control materials (polyethyleneimine-PEI and polyornithine plus fibronectin- PLO/F) in a serum-free medium, neurons, astrocytes, and oligodendrocytes were generated in all conditions, indicating that TRG permits the multi-lineage differentiation of aOBSCs. However, the total number of cells was reduced on both PEI and TRG. In a serum-containing medium, aOBSC-derived neurons and oligodendrocytes grown on TRG were more numerous than in controls; the neurons developed synaptic boutons and oligodendrocytes were more branched. In contrast, neurons growing on PVDF membranes had reduced neurite branching, and on MWCNTs-loaded membranes oligodendrocytes were lower in numbers than in controls. Overall, these findings indicate that uncoated TRG may be biocompatible with the generation, differentiation, and maturation of aOBSC-derived neurons and glial cells, implying a potential use for TRG to study functional neuronal networks. [less ▲]Detailed reference viewed: 28 (1 ULg) Résister à l’essentialisation de l’Allemagne : Les Temps Modernes, revue franco-allemande ?Franck, Thomas in Trajectoires (2016), 10Im Zentrum des vorliegenden Aufsatzes steht die Doppelausgabe (46-47) der französischen Zeitschrift Temps Modernes, die unter dem Titel „Allemagne“ im August-September 1949 erschien und einen besonderen ... [more ▼]Im Zentrum des vorliegenden Aufsatzes steht die Doppelausgabe (46-47) der französischen Zeitschrift Temps Modernes, die unter dem Titel „Allemagne“ im August-September 1949 erschien und einen besonderen Fall von kulturellem und intellektuellem Transfer zwischen Deutschland und Frankreich darstellt. Mit Mitteln der Diskursanalyse und der Imagologie sollen hier rhetorische Strategien herausgearbeitet werden, die der Realisierung eines kritischen Projekts und der Anprangerung der Stereotypen dienen, die Deutschland damals zugeschrieben wurden. Aufgestellt wird folgende These: Indem sie Intellektuelle aus unterschiedlichen Orten und Disziplinen und heterogenes Wissen zusammenbringt, bietet sich die Zeitschrift besonders gut für eine kritische Reflexion der herrschenden Ideologien und kollektiven Überzeugungen an. Indem es Deutschen mit kommunistischer und antifaschistischer Gesinnung das Wort erteilt, will das Heft „Allemagne“ zu Erkenntnissen über ein ‚anderes Deutschland‘ kommen, das von Aufstand und Widerstand geprägt ist, und bricht so mit einer Reduktion des Landes auf eine unveränderliche und monolithische Identität, die als gleichermaßen fügsam und autoritär verstanden wurde. [less ▲]Detailed reference viewed: 17 (5 ULg) Dynamics of the flares in the active polar region of JupiterBonfond, Bertrand ; Grodent, Denis ; Badman, S. V. et alin Geophysical Research Letters (2016)The dusk-side of the polar region of Jupiter's UV aurorae, called the active region, sometimes exhibits quasi-periodic (QP) flares on time-scales of 2-3 minutes. Based on Hubble Space Telescope Far-UV ... [more ▼]The dusk-side of the polar region of Jupiter's UV aurorae, called the active region, sometimes exhibits quasi-periodic (QP) flares on time-scales of 2-3 minutes. Based on Hubble Space Telescope Far-UV time-tag images, we show for the first time that the northern hemisphere also displays QP-flares. The area covered by these flares can reach up to 2.4 × 108 km2 (i.e. the whole active region), but often only involves an area an order of magnitude smaller. Using a magnetic field mapping model, we deduced that these areas correspond to the dayside outer magnetosphere. In our dataset, quasi-periodic features are only seen on half of the cases and even on a given observation, a region can be quiet for one half and blinking on the other half. Consecutive observations in the two hemispheres show that the brightening can occur in phase. Combined with the size and location of the flares, this behaviour suggests that the QP-flares most likely take place on closed magnetic field lines. [less ▲]Detailed reference viewed: 25 (5 ULg) Aging Processes in Lithiated FeSn2 Based Negative Electrode for Li-ion Batteries: a New Challenge for Tin Based Intermetallic Materialschamas, mohamad; Mahmoud, Abdelfattah ; Tang, Junlei et alin Journal of Physical Chemistry C (2016)Tin based intermetallic compounds proposed as negative electrode materials for Li-ion batteries not only suffer from capacity fade during cycling due to volume variations but also from aging phenomena in ... [more ▼]Tin based intermetallic compounds proposed as negative electrode materials for Li-ion batteries not only suffer from capacity fade during cycling due to volume variations but also from aging phenomena in lithiated states. By using FeSn2 as a model compound, we propose an analysis of this process by combining electrochemical potential measurements, 119Sn and 57Fe Mössbauer spectroscopies, magnetic measurements and impedance spectroscopy. We show that the Fe/Li7Sn2 composite obtained at the end of the first discharge is progressively transformed during the aging process occurring within the electrochemical cell in open circuit condition. The Fe nanoparticles are stable while the Li7Sn2 nanoparticles are progressively delithiated with time leading to Sn-rich LixSn nano-alloys without observable back reaction with Fe. The deinserted lithium atoms react with the electrolyte and modify the surface electrode interphase (SEI) by increasing its thickness and/or decreasing its porosity [less ▲]Detailed reference viewed: 9 (0 ULg) La reconnaissance des génocides et la répression du négationnismeGrandjean, Geoffrey in Courrier Hebdomadaire du CRISP (2016), 2304-2305La reconnaissance politique d’un génocide et la répression de la négation de celui-ci représentent deux enjeux d’une grande importance symbolique. Surtout, elles constituent un exercice très délicat pour ... [more ▼]La reconnaissance politique d’un génocide et la répression de la négation de celui-ci représentent deux enjeux d’une grande importance symbolique. Surtout, elles constituent un exercice très délicat pour l’autorité politique qui pose de tels actes. Il s’agit en effet de consacrer une vérité historique et de dicter le souvenir qui doit en être véhiculé. L’intervention d’une instance politique dans le champ de l’histoire et de la mémoire est toujours entourée de nombreux débats. Les discussions, souvent vives, portent sur diverses questions. Le principe d’une action législative dans un tel domaine est-il recevable et pertinent ? Quelle définition de « génocide » convient-il d’adopter ? La répression du négationnisme est-elle de nature à justifier une limitation de la liberté d’expression ? Si oui, dans quelle mesure cette restriction s’applique-t-elle aussi aux chercheurs ? Lorsqu’il s’agit d’événements historiques relatifs à un autre État, faut-il faire primer l’éthique et la morale sur la diplomatie ? Les réponses à ces interrogations fondamentales se cristallisent dans des lignes de fracture qui échappent aux clivages partisans classiques. En Belgique, les initiatives de reconnaissance des crimes de génocide et de pénalisation de leur négation sont le fait des deux chambres du Parlement fédéral. Elles ont abouti à diverses dispositions législatives, telles la loi réprimant la négation du génocide commis par le régime nazi à l’encontre des Juifs pendant la Seconde Guerre mondiale (1995), une résolution relative au génocide perpétré par l’Empire ottoman à l’encontre des Arméniens en 1915 (1998), une résolution sur le génocide des Tutsis au Rwanda en 1994 (2004) et une résolution relative à la commémoration du centenaire du génocide arménien (2015). G. Grandjean retrace et éclaire l’ensemble des débats parlementaires qui se sont tenus en Belgique depuis 1992 autour de la question de la mémoire des crimes de masse. Son Courrier hebdomadaire offre les clés de lecture pour la compréhension des débats en cours quant à une extension de la loi de 1995. [less ▲]Detailed reference viewed: 22 (2 ULg) Large neighborhood search for multi-trip vehicle routingFrançois, Véronique ; Arda, Yasemin ; Crama, Yves et alin European Journal of Operational Research (2016), 255(2), 422-441We consider the multi-trip vehicle routing problem, in which each vehicle can perform several routes during the same working shift to serve a set of customers. The problem arises when customers are close ... [more ▼]We consider the multi-trip vehicle routing problem, in which each vehicle can perform several routes during the same working shift to serve a set of customers. The problem arises when customers are close to each other or when their demands are large. A common approach consists of solving this problem by combining vehicle routing heuristics with bin packing routines in order to assign routes to vehicles. We compare this approach with a heuristic that makes use of specific operators designed to tackle the routing and the assignment aspects of the problem simultaneously. Two large neighborhood search heuristics are proposed to perform the comparison. We provide insights into the configuration of the proposed algorithms by analyzing the behavior of several of their components. In particular, we question the impact of the roulette wheel mechanism. We also observe that guiding the search with an objective function designed for the multi-trip case is crucial even when exploring the solution space of the vehicle routing problem. We provide several best known solutions for benchmark instances. [less ▲]Detailed reference viewed: 54 (17 ULg) WASP-157b, a Transiting Hot Jupiter Observed with K2Močnik, T.; Anderson, D. R.; Brown, D. J. A. et alin Publications of the Astronomical Society of the Pacific (2016), 970We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like density with a mass of $0.57 ... [more ▼]We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like density with a mass of$0.57 \pm 0.10$M$_{\rm Jup}$and a radius of$1.06 \pm 0.05$R$_{\rm Jup}\$. We do not detect any rotational or phase-curve modulations, nor the secondary eclipse, with conservative semi-amplitude upper limits of 250 and 20 ppm, respectively. [less ▲]Detailed reference viewed: 13 (2 ULg) Killing it Softly: Girdling as an Efficient Eco-friendly Method to Locally Remove the Invasive Acer negundoMerceron, Nastasia in Ecological Restoration (2016), 34(4), 297-305Acer negundo (boxelder maple) is a North American native tree species that currently invades riparian and disturbed areas in Europe, affecting both bank stability and ecosystem biodiversity. As a response ... [more ▼]Acer negundo (boxelder maple) is a North American native tree species that currently invades riparian and disturbed areas in Europe, affecting both bank stability and ecosystem biodiversity. As a response to managers’ requests, we aimed at finding an eco-friendly method which would locally remove this species and help habitat restoration. Four control methods were tested on A. negundo adults and saplings from stands located in three experimental sites along different watercourses in Southwestern France: girdling, low cutting, high cutting, and cutting followed by the application of juglone (a natural allelopathic substance from walnut tree leaves). Mortality and resprout production on the treated A. negundo individuals were assessed during two years following the application of the control methods. Girdling was the most efficient method as it significantly induced higher mortality rates compared to the others (65 vs 15% of dead A. negundo two years after treatment administration). When healing emerged on trunks, yearly repeated girdling was required to reach full success. None of the control methods significantly reduced resprout production; not even the application of juglone. Girdling is the most recommended method to kill and remove A. negundo at a local scale in invaded natural habitats. Considering that A. negundo benefits from increases in light availability to outcompete native species, we further recommend removing seedlings from understories when applying girdling on adult and sapling individuals in order to optimize restoration conditions in natural stands and improve native species re-establishment. [less ▲]Detailed reference viewed: 19 (7 ULg)