Last 7 days     Results 2521-2540 of 5843.   122 123 124 125 126 127 128 129 130 131 132   Les tables rondes sectorielles comme outil de capacitation ou de renforcement des conflits de référentiel?Remy, Céline Conference (2017, April 03)Detailed reference viewed: 18 (2 ULiège) The nationalization of local elections: disentangling effects of voters’ demand and party’s organizational capacityDodeigne, Jérémy ; Jacquet, Vincent; Reuchamps, MinConference (2017, April 03)Detailed reference viewed: 12 (1 ULiège) WASP-167b/KELT-13b: Joint discovery of a hot Jupiter transiting a rapidly-rotating F1V starTemple, L. Y.; Hellier, C.; Albrow, M. D. et alin Monthly Notices of the Royal Astronomical Society (2017), 471(3), 2743-2752We report the joint WASP/KELT discovery of WASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a $V$ = 10.5, F1V star with [Fe/H] = 0.1 $\pm$ 0.1. The 1.5 R$_{\rm Jup}$ planet was ... [more ▼]We report the joint WASP/KELT discovery of WASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a $V$ = 10.5, F1V star with [Fe/H] = 0.1 $\pm$ 0.1. The 1.5 R$_{\rm Jup}$ planet was confirmed by Doppler tomography of the stellar line profiles during transit. We place a limit of $<$ 8 M$_{\rm Jup}$ on its mass. The planet is in a retrograde orbit with a sky-projected spin-orbit angle of $\lambda = -165^{\circ} \pm 5^{\circ}$. This is in agreement with the known tendency for orbits around hotter stars to be more likely to be misaligned. WASP-167/KELT-13 is one of the few systems where the stellar rotation period is less than the planetary orbital period. We find evidence of non-radial stellar pulsations in the host star, making it a $\delta$-Scuti or $\gamma$-Dor variable. The similarity to WASP-33, a previously known hot-Jupiter host with pulsations, adds to the suggestion that close-in planets might be able to excite stellar pulsations. [less ▲]Detailed reference viewed: 14 (4 ULiège) L’esprit de Cîteaux : des femmes et des hommes pour en vivreHenneau, Marie-Elisabeth Conference (2017, April 01)Detailed reference viewed: 16 (0 ULiège) Successional Dynamics of Cyanobacterial Communities Following the Retreat of Two Glaciers in Petunia Bay (Svalbard)Stelmach Pessi, Igor ; Pushkareva, Ekaterina; Lara, Yannick et alConference (2017, April)Most glaciers in Svalbard (High Arctic) have been retreating and thinning since the end of the Little Ice Age in the late 19th century. As a glacier retreats, it exposes new terrestrial habitats for the ... [more ▼]Most glaciers in Svalbard (High Arctic) have been retreating and thinning since the end of the Little Ice Age in the late 19th century. As a glacier retreats, it exposes new terrestrial habitats for the colonization by pioneering (micro)organisms. Here we report on the successional trajectories of cyanobacterial communities along a 100-year deglaciation gradient in the Ebba- and Hørbyebreen glacier forefields (Petunia Bay, central Svalbard). Cyanobacterial biomass and community composition were evaluated by epifluorescence microscopy and pyrosequencing of partial 16S rRNA gene sequences. Pseudanabaenales was the most abundant order in both forefields, followed by Chroococcales, Oscillatoriales, Synechococcales, Nostocales and Gloeobacterales. Succession was characterized by a decrease in phylotype richness and a marked turnover in community structure, resulting in a separation between initial (10–20 years since deglaciation), intermediate (30–50 years), and advanced (80–100 years) communities. Community turnover was explained by a combination of temporal and environmental factors, which accounted together for 46.9% of the variation in community structure. Interestingly, phylotypes associated with initial communities were related to potentially novel taxa (i.e. <97.5% similar to sequences currently available on GenBank) and sequences predominantly restricted to polar biotopes, suggesting that the initial colonization is performed by cyanobacteria from glacial and periglacial habitats. Advanced communities, on the other hand, included genotypes with a wider geographic distribution, which are likely able to establish only after the microenvironment has been modified by pioneering taxa. [less ▲]Detailed reference viewed: 27 (3 ULiège) Work environment and work-to-family conflict: Mediating role of work investment.Babic, Audrey ; Stinglhamber, Florence; Barbier, Marie et alPoster (2017, April)Detailed reference viewed: 24 (2 ULiège) Lessons learned from combined experimental and numerical modelling of urban ﬂoodsArchambeau, Pierre ; Bruwier, Martin ; Finaud-Guyot, Pascal et alConference (2017, April)Field data for validating hydraulic models remain scarce, They are often limited to inundation extents and water marks, which provide little insights into the dynamic features of the ﬂow in urbanized ... [more ▼]Field data for validating hydraulic models remain scarce, They are often limited to inundation extents and water marks, which provide little insights into the dynamic features of the ﬂow in urbanized ﬂoodplains, such as the discharge partition in-between the streets and the velocity ﬁelds. To address this issue, a unique experimental setup representing a whole urban district was built in the laboratory ICube in Strasbourg and the state-of-the-art shallow- water model Wolf 2D was tested against the experimental measurements (An'ault et al, 2016), The numerical model was also used to extend and reﬁne the analysis of the laboratory observations. The experimental model (5 m >< 5 m) represents a square urban district with a total of l4 streets of different Widths and 49 intersections (crossroads). The inﬂow discharge can be controlled in each street individually and the outﬂow discharges were measured downstream of each street. The numerical model Wolf was developed at the University of Liege and has been extensively used in ﬂood risk research (Beckers et al, 2013, Bruwier et al. 2015, Detrembleur et al. 2015). Several lessons could be learned from this combined experimental and numerical analysis. First, we found that the discharge partition in—between the streets is primarily controlled by the street widths. Second, although the standard shallow-water equations reproduce satisfactorily tnost of the ﬂow characteristics, adding a turbulence model improves the prediction of the shape and length of the ﬂow recirculations in the streets. Yet, this has little inﬂuence on the discharge partition because the computed recirculation widths are hardly affected by the turbulence model. The experiments and the numerical model also show that the water depths in the streets remain fairly constant in~between two intersections, while they drop suddenly downstream of each intersection as a result of complex ﬂow interactions at the intersections. This hints that friction has little inﬂuence on the water depths obtained in the experiments. However, tailored numerical tests demonstrate that this is a direct consequence of the distorted nature of the experimental setup. Indeed, the ratio between the water depth and the street width is close to 1 in the experiments, while it would be at least one order of magnitude lower in real-world conditions, even for extreme ﬂoods. Finally, remote sensing data, such as digital elevation models, are generally available on a regular grid, which makes it convenient to use also a Cartesian grid for hydraulic modelling, We show here that the discretization of the geometry of the buildings on such a Cartesian grid has a major inﬂuence on the modelling accuracy (overestimation of the overall ﬂow resistance). An extended shallow-water model based on non-isotropic porosity parameters is shown to improve substantially the prediction of the discharge partition in-between the streets. It is therefore considered as a valuable tool to advance urban ﬂood modelling in practice. From the lessons learned here, we recommend that future research focuses on the design and exploitation of a less distorted experimental model, as well as on the analysis of extra ﬂow processes such as transient conditions and interactions between overland ﬂow and pressurized ﬂow in underground passages. [less ▲]Detailed reference viewed: 19 (5 ULiège) Transition between symmetric and asymmetric ﬂow in rectangular shallow reservoirs — a case of maximum dissipation?westhoff, Martijn; Erpicum, Sébastien ; Archambeau, Pierre et alConference (2017, April)Shallow reservoirs are often used in hydraulic engineering as sediment traps or storage basins, Sedimentation within these reservoirs depends on the ﬂow pattern, which in turn depends on the shape of the ... [more ▼]Shallow reservoirs are often used in hydraulic engineering as sediment traps or storage basins, Sedimentation within these reservoirs depends on the ﬂow pattern, which in turn depends on the shape of the reservoir. For short rectangular reservoirs, the main jet ﬂows straight from the inlet to the outlet with on both sides identical recirculation zones. In longer reservoirs, however, the main jet reattaches to the side of the reservoir leading to a small and a large recirculation zone. Previous studies have found an empirical geometric relation describing the switch between these two different ﬂow patterns. In this study, we demonstrate that this switch in ﬂow pattern coincides with a maximization of energy dissipation in the shear layer between the main jet and the recirculation zones. To show this we described the power received from the jet by the recirculation zone as the product of a ﬂuid-ﬂuid friction coefﬁcient and the square of the velocity difference times the shear velocity of the recirculation zone. This power is balanced by the bottom friction of the recirculation zone. Energy dissipation in the shear layer is then determined as the difference between the power performed by the jet and the power received by the recirculation zone. In this setup, energy dissipation is maximized by optimizing the friction coefﬁcient. We show that for short reservoir lengths, energy dissipation is higher in the case of a symmetric ﬂow pattern, while for longer reservoir the energy dissipation is higher for asymmetric ﬂow patterns. The simulated switch between the two ﬂow patterns appears to be very close to the empirical relation. This suggests that the flow pattem adapts in order to maximize energy dissipation between the jet and recirculation zones. The strength of this approach lies in the fact that no detailed knowledge of small scale processes is needed, while large scale structure formation can still be predicted. [less ▲]Detailed reference viewed: 15 (1 ULiège) Price Discrimination and Dispersion under Asymmetric Profiling of ConsumersLam, Wing Man Wynne ; Belleflamme, Paul; Vergote, WouterE-print/Working paper (2017)Detailed reference viewed: 18 (2 ULiège) Les retardateurs de flamme bromés : impact sur l'environnement et la santé des individus exposésDufour, Patrice ; Charlier, Corinne in Annales de Biologie Clinique (2017), 75(2), 146-157Depuis l’antiquité, l’homme utilise des moyens chimiques pour protéger ses biens des incendies. Efficaces et faciles d’emploi, les retardateurs de flamme bromés sont utilisés depuis plusieurs décennies de ... [more ▼]Depuis l’antiquité, l’homme utilise des moyens chimiques pour protéger ses biens des incendies. Efficaces et faciles d’emploi, les retardateurs de flamme bromés sont utilisés depuis plusieurs décennies de façon massive dans l’industrie du plastique. À l’instar d’autres composés organohalogénés, les retardateurs de flamme bromés sont très persistants dans l’environnement et capables de s’accumuler le long de la chaîne alimentaire. De nombreux auteurs ont mis en évidence leur présence dans notre environnement, chez différentes espèces animales mais également dans le sérum humain. Plus inquiétant encore, l’homme est exposé à ces polluants dès la grossesse et par la suite via le lait maternel. Cette exposition pourrait avoir des conséquences sur notre santé. De nombreuses études in vitro, in vivo ou épidémiologiques ont mis en lumière une influence néfaste des retardateurs de flamme bromés sur notre système endocrinien, principalement au niveau de la fonction thyroïdienne mais également de la reproduction, du neurodéveloppement chez l’enfant et du métabolisme avec un risque accru de développer un diabète. Si une certaine prise de conscience a déjà eu lieu au niveau des autorités et de certaines grandes entreprises, de nouvelles études sont nécessaires pour confirmer les tendances déjà dégagées, élucider les mécanismes sous-jacents et déterminer s’il existe des synergies avec d’autres polluants tels que par exemple les PCB. [less ▲]Detailed reference viewed: 25 (4 ULiège) Tectonic, human and climate signal over the last 4000 years in the Lake Amik record (southern Turkey)El Ouahabi, Meriam ; Hubert, Aurelia ; Vander Auwera, Jacqueline et alPoster (2017, April)This study investigates the upper sediments infilling the central part of the Amik Basin in Southern Turkey. The Amik Basin is located in a tectonically active area: it is crossed by the Dead Sea Fault, a ... [more ▼]This study investigates the upper sediments infilling the central part of the Amik Basin in Southern Turkey. The Amik Basin is located in a tectonically active area: it is crossed by the Dead Sea Fault, a major neotectonic structure in the Middle East extending from the Red Sea in the South to the East Anatolian Fault Zone in the North. Continuous human occupation is attested since 6000-7000 BC in the Amik Basin. The study focuses on the sedimentary record of the Lake Amik occupying the central part of the Basin. Our objective is to constrain major paleo-environmental changes over the last 4000 years. The lake has been drained and progressively dried up since the mid-50s. The absence of water column during the summer season allows to collect lacustrine samples along a 5 meter depth trench with a sampling resolution of 1 to 2 cm. Diverse complementary methods were applied to characterize the sedimentary record: i.e. magnetic susceptibility, grain size, organic and inorganic matter by loss-of-ignition, mineralogy by X-ray diffraction and core scanner X-ray fluorescence (XRF) geochemistry. The age of the record is constrained combining radionuclide and radiocarbon datings. Structural disturbances observed in the lacustrine sediments record are linked with major historical earthquakes from the 6th to the 9th century AD due to the Hasipasa Fault rupture. In addition to the tectonic influence, the sedimentary record clearly shows two periods indicating strong soil erosion in the lake catchment: (1) the most recent erosion phase occurs over the Roman period to Present; (2) the oldest one would have occurred during the Late Bronze period. Such changes are most probably related to change in land use. In term of climate influences, the mineralogical and geochemical results allow to evidence variations in chemical weathering conditions in the watershed and lake water level fluctuations, respectively. The clay mineral assemblages attest for significant pedogenesis transformations, especially during the Islamic/Ottoman period. Based on XRF results, an increase in potassium is attributed to a lake development phase during a wet phase An overflow of the Orontes River would be responsible for clay deposition. By contrast, increased calcium and strontium rather correspond to a low lacustrine level and a drier period. The Bronze and Iron/Hellenistic periods are both characterized by low lake level with limited contribution from the watershed. To conclude, our multiproxy study of the Lake Amik allows to decipher between tectonic, human and climate influences over the last 4000 years. Further step would be to compare the Amik record with other regional archives to evidence local and regional events. [less ▲]Detailed reference viewed: 40 (3 ULiège) Fluvial dike breaching due to overtopping: how different is it from dam breaching?Rifai, Ismail; Erpicum, Sébastien ; Archambeau, Pierre et alConference (2017, April)Detailed reference viewed: 15 (1 ULiège) Sustainable Transport through Taxation. Analysis of Road Passenger Transport: Constraints, Limits and ProspectsVanrykel, Fanny Scientific conference (2017, April)Présentation du projet de thèse "La fiscalité au service d’un transport durable. Analyse du transport routier de personnes: contraintes, limites et perspectives"Detailed reference viewed: 15 (2 ULiège) L'image du mois: Perforation intestinale grêle sur corps étrangerMaquet, Justine ; BOULANGER, Yves-Gautier ; MILICEVIC, Mladen in Revue Médicale de Liège (2017), 72(4), 165-167Les perforations intestinales grêles sont rares et ont de multiples étiologies. Nous rapportons le cas d'un patient âgé de 52 ans présentant des douleurs chroniques en fosse iliaque gauche depuis plus de ... [more ▼]Les perforations intestinales grêles sont rares et ont de multiples étiologies. Nous rapportons le cas d'un patient âgé de 52 ans présentant des douleurs chroniques en fosse iliaque gauche depuis plus de 9 mois. L'imagerie par entéro-IRM et CT scanner a permis de mettre en évidence d'une manière rétrospective une perforation intestinale grêle couverte par un corps étranger. L'intérêt de cette observation est de montrer d'une part les signes indirects de la perforation grêle et d'autre part le caractère migrant du corps étranger. [less ▲]Detailed reference viewed: 41 (5 ULiège) IgG4-related membranous glomerulonephritis and generalized lymphadenopathy without pancreatitis: a case reportHUART, Justine ; GROSCH, Stéphanie ; BOVY, Christophe et alin BMC Nephrology (2017), 18Abstract Background: IgG4-related disease is a recently described pathologic entity. This is the case of a patient with nephrotic syndrome and lymphadenopathy due to IgG4-related disease. Such a kidney ... [more ▼]Abstract Background: IgG4-related disease is a recently described pathologic entity. This is the case of a patient with nephrotic syndrome and lymphadenopathy due to IgG4-related disease. Such a kidney involvement is quite peculiar and has only been described a few times recently. Renal biopsy showed a glomerular involvement with membranous glomerulonephritis in association with a tubulo-interstitial nephropathy. Moreover, the patient was not suffering from pancreatitis. Case presentation: The patient is a middle-aged man of Moroccan origin. He has developed recurrent episodes of diffuse lymphadenopathies, renal failure and nephrotic syndrome. Renal biopsies showed membranous glomerulonephritis. Discussion and conclusion: The diagnostic approach of this atypical presentation is discussed in this case report as well as diagnostic criteria, therapeutic strategies, biomarkers and pathophysiology of IgG4-related disease. IgG4-related membranous glomerulonephritis is a well-established cause of membranous glomerulonephritis. It must be sought after in every patient with a previous diagnosis of IgG4-related disease and in every patient with this histological finding on renal biopsy. Corticoids are still the first-line treatment of IgG4-related disease. New therapeutic strategies are needed to avoid glucocorticoids long term side-effects. Interestingly, the patient was prescribed cyclophosphamide in addition to glucocorticoids for an immune thrombocytopenia. This treatment had a very good impact on his IgG4-related disease. [less ▲]Detailed reference viewed: 27 (3 ULiège) Evaluation of the Abbott RealTime CMV and EBV assays on the m2000 (Abbott) platform.BONTEMS, Sébastien ; BOREUX, Raphaël ; CAPRARO, Valérie et alPoster (2017, April)Detailed reference viewed: 7 (2 ULiège) « Antigone » en droit fiscal : quelle évolution ?Bourgeois, Marc ; Verscheure, Céline in Bourgeois, Marc; Verscheure, Céline; Herbecq, François (Eds.) et al Le droit fiscal en 2017 : questions choisies (2017)Detailed reference viewed: 45 (5 ULiège) crossroads, le magazine sonore du blues et des musiques américainesSacré, Robert Diverse speeche and writing (2017)Magazine sonore du Blues et des musiques américaines. Chaque mercredi de 18h à 20h; rediffusion chaque samedi de 22h à minuit. streaming: www.equinoxefm.be ; podcasts www.mixcloud.com/robertsacre9; infos ... [more ▼]Magazine sonore du Blues et des musiques américaines. Chaque mercredi de 18h à 20h; rediffusion chaque samedi de 22h à minuit. streaming: www.equinoxefm.be ; podcasts www.mixcloud.com/robertsacre9; infos www.facebook.com/robert.sacre.9 [less ▲]Detailed reference viewed: 14 (0 ULiège) 18-Fluoro-deoxyglucose uptake in inflammatory hepatic adenoma: A case report.Liu, Willy; Delwaide, Jean ; BLETARD, Noëlla et alin World Journal of Hepatology (2017), 9(11), 562-566Positron emission tomography computed tomography (PET-CT) using 18-Fluoro-deoxyglucose (18FDG) is an imaging modality that reflects cellular glucose metabolism. Most cancers show an uptake of 18FDG and ... [more ▼]Positron emission tomography computed tomography (PET-CT) using 18-Fluoro-deoxyglucose (18FDG) is an imaging modality that reflects cellular glucose metabolism. Most cancers show an uptake of 18FDG and benign tumors do not usually behave in such a way. The authors report herein the case of a 38-year-old female patient with a past medical history of cervical intraepithelial neoplasia and pheochromocytoma, in whom a liver lesion had been detected with PET-CT. The tumor was laparoscopically resected and the diagnosis of inflammatory hepatic adenoma was confirmed. This is the first description of an inflammatory hepatic adenoma with an 18FDG up-take. [less ▲]Detailed reference viewed: 35 (9 ULiège) HST observations of Jupiter's UV aurora during Juno's orbits PJ03, PJ04 and PJ05Grodent, Denis ; Gladstone, G Randall; Clarke, John T. et alPoster (2017, April)The intense ultraviolet auroral emissions of Jupiter are currently being monitored in the frame of a large Hubble Space Telescope (HST) program meant to support the NASA Juno prime mission. The present ... [more ▼]The intense ultraviolet auroral emissions of Jupiter are currently being monitored in the frame of a large Hubble Space Telescope (HST) program meant to support the NASA Juno prime mission. The present study addresses the three first Juno orbits (PJ03, 04 and 05) during which HST obtained parallel observations. These three campaigns basically consist of a 2-week period bracketing the time of Juno’s closest approach of Jupiter (CA). At least one HST visit is scheduled every day during the week before and the week following CA. During the ∼12-hour period centered on CA and depending on observing constraints, several HST visits are programmed in order to obtain as many simultaneous observations with Juno-UVS as possible. In addition, at least one HST visit is obtained near Juno’s apojove, when UVS is continuously monitoring Jupiter’s global auroral power, without spatial resolution, for about 12 hours. We are using the Space Telescope Imaging Spectrograph (STIS) in time-tag mode in order to provide spatially resolved movies of Jupiter’s highly dynamic aurora with timescales ranging from seconds to several days. We discuss the preliminary exploitation of the HST data and present these results in such a way as to provide a global magnetospheric context for the different Juno instruments studying Jupiter’s magnetosphere, as well as for the numerous ground based and space based observatories participating to the Juno mission. [less ▲]Detailed reference viewed: 30 (5 ULiège)