Our results strongly suggest that P2X1 ion channels play a protective role in sepsis by negatively regulating systemic neutrophil activation, thereby limiting oxidative damage, activation of coagulation and platelet accumulation into the lungs. Therefore, since antagonists of P2X1 ion channels may not only target platelets but also affect neutrophils, inhibiting these channels in the highly inflammatory environment of severe sepsis or of acute coronary syndromes might be detrimental. [less ▲]Detailed reference viewed: 23 (10 ULg) Decreased baroreflex gain more strongly predicts microalbuminuria and increased pulsatile stress than decreased rr e/i ratio in patients with type 1 diabetesSCHEEN, André ; MARCHAND, Monique ; PHILIPS, Jean-Christophe in Diabetologia (2011), 54(s1), 104Detailed reference viewed: 8 (2 ULg) Extended safety observations from denosumab administration in postmenopausal women from FREEDOM and FREEDOM extension trialsBrown, J. P.; Bone, H. G.; Chapurlat, R. et alin Arthritis and Rheumatism (2011), 63(S10), 431-432Detailed reference viewed: 20 (3 ULg) The clinical and economic burden of poor adherence with osteoporosis medications in IrelandHiligsmann, Mickaël ; McGowan, Bernie; Bennett, Kathleen et alin Value in Health (2011), 14Detailed reference viewed: 24 (8 ULg) Connexin 43 is downregulated in sclerotic human subchondral osteoblasts: a possible explanation for decrease of mechanosensitivity in these cellsSanchez, Christelle ; Pesesse, Laurence ; Henrotin, Yves in Osteoarthritis and Cartilage (2011), 19(Suppl 1), 200-201Detailed reference viewed: 11 (1 ULg) Strontium ranelate : an effective solution whatever the patient profilesReginster, Jean-Yves in Osteoporosis International (2011), 22(S5), 756-757Detailed reference viewed: 15 (1 ULg) Efficacy and safety of strontium ranelate in the treatment of knee ostoarthritis : a randomized, double-blind, placebo-controlled international trialReginster, Jean-Yves ; Chapurlat, R.; Christiansen, C. et alin Osteoporosis International (2011), 22(S5), 742-743Detailed reference viewed: 48 (1 ULg) Faire de sa vie une œuvre d'art paralittéraire. Quelques réflexions autour de la littérature-MesrineDenis, Benoît in Etudes Françaises (2011), 47(1), 141-155Detailed reference viewed: 11 (3 ULg) Study of the association between bone sialoprotein, hypertrophic differentiation of chondrocytes and cartilage lesions in osteoarthritic cartilagePesesse, Laurence ; Sanchez, Christelle ; Walsh, David et alin Osteoarthritis and Cartilage (2011), 19(Suppl 1), 106Detailed reference viewed: 14 (0 ULg) Online Sparse Bandit for Card GamesLupien St-Pierre, David ; Louveaux, Quentin ; Teytaud, Olivierin Advance in Computer Games (2011)Finding an approximation of a Nash equilibria in matrix games is an important topic that reaches beyond the strict application to matrix games. A bandit algorithm commonly used to approximate a Nash ... [more ▼]Finding an approximation of a Nash equilibria in matrix games is an important topic that reaches beyond the strict application to matrix games. A bandit algorithm commonly used to approximate a Nash equilibrium is EXP3. However, the solution to many problems is often sparse, yet EXP3 inherently fails to exploit this property. To the knowledge of the authors, there exist only an offline truncation to tackle such issue. In this paper, we propose a variation of EXP3 to exploit the fact that solution is sparse by dynamically removing arms; the resulting algorithm empirically performs better than previous versions. We apply the resulting algorithm to a MCTS program for the Urban Rivals card game. [less ▲]Detailed reference viewed: 29 (12 ULg) What's new on the horizon in therapyReginster, Jean-Yves in Osteoporosis International (2011), 22(S5), 682Detailed reference viewed: 9 (2 ULg) New alginate-chitosan hydrogel beads with anti-inflammatory and anabolic effects on human chondrocytesOprenyeszk, Frédéric ; Mathy, Marianne ; Sanchez, Christelle et alin Osteoarthritis and Cartilage (2011), 19(Suppl 1), 222Detailed reference viewed: 37 (18 ULg) SIRT1-deficient mice exhibit an altered cartilage phenotype and undergo increased cartilage breakdown and apoptosisGabay, Odile; Sanchez, Christelle ; Dvir-Ginzberg, Mona et alin Osteoarthritis and Cartilage (2011), 19(Suppl 1), 33Detailed reference viewed: 10 (0 ULg) Innovative minimally-invasive analytical strategies for human biomonitoring: Measurement of toxicants in dried-blood spotsL'Homme, Benjamin ; Brasseur, Catherine ; Focant, Jean-François in Organohalogen Compounds (2011), 73Detailed reference viewed: 58 (13 ULg) Quantitative evaluation of fluid resuscitation in burn children : a retrospective study.ROUSSEAU, Anne-Françoise ; LEDOUX, Didier ; RICHARD, Patrick et alin Burns : Journal of the International Society for Burn Injuries (2011), 37(suppl 1), 12Detailed reference viewed: 37 (10 ULg) Long-term denosuamab treatment in postmenopausal women with osteoporosis : results from the first two years of the FREEDOM trial extensionBone, H.; Chapurlat, R.; Brandi, M. et alin Osteoporosis International (2011), 22(S4), 527-528Detailed reference viewed: 16 (1 ULg) New look at the $[{\bf 70},1^-]$ nonstrange and strange baryons in the $1/N_c$ expansionMatagne, Nicolas; Stancu, Floarea in AIP Conference Proceedings (2011)The masses of excited nonstrange and strange baryons belonging to the multiplet $[{\bf 70},1^-]$ are calculated in the $1/N_c$ expansion to order $1/N_c$ with a new method which allows to considerably ... [more ▼]The masses of excited nonstrange and strange baryons belonging to the multiplet $[{\bf 70},1^-]$ are calculated in the $1/N_c$ expansion to order $1/N_c$ with a new method which allows to considerably reduce the number of linearly independent operators entering the mass formula. This study represents an extension to SU(6) of our work on nonstrange baryons, the framework of which was SU(4). [less ▲]Detailed reference viewed: 17 (7 ULg) Treatment of postmenopausal women with osteoporosis for 5 years with denosumab : two-year results from the FREEDOM trial extensionChapurlat, R.; Bone, H. G.; Brandi M L et alin Annals of the Rheumatic Diseases (2011), 70(S3), 166-167Detailed reference viewed: 31 (9 ULg) Predictors of generic and specific quality of life among paediatric cancer patients (2011)Detailed reference viewed: 7 (3 ULg) Clinical sedation and bispectral index in burn children receiving gamma-hydroxybutyrate.ROUSSEAU, Anne-Françoise ; SABOURDIN, Nada; RICHARD, Patrick et alin European Journal of Anaesthesiology. Supplement (2011), 28(Suppl 48), 150Detailed reference viewed: 16 (5 ULg) Stimulant effects of ethanol in adolescent Swiss mice: development of sensitization and consequences in adulthoodQuoilin, Caroline ; Didone, Vincent ; Quertemont, Etienne in Alcohol & Alcoholism (2011), 46(Supplément 1), 40The adolescent period is characterized by behavioral and neurobiological changes, which might predispose adolescents to the long-term negative consequences of alcohol. For example, enhanced risks of ... [more ▼]The adolescent period is characterized by behavioral and neurobiological changes, which might predispose adolescents to the long-term negative consequences of alcohol. For example, enhanced risks of alcohol dependence are reported when drinking is initiated early. In the present studies, we used Swiss female mice to test whether chronic ethanol injections during adolescence durably affect the sensitivity to the stimulant effects of ethanol in adulthood. In a first set of experiments, several groups of young (28 day-old) mice were daily injected with various ethanol doses (1.5 – 4 g/kg) to test for ethanol sensitization during adolescence in comparison to adult mice exposed to the same schedule of ethanol injections. The results show that young mice express much higher stimulant effects after acute ethanol injections. However, they also require higher ethanol doses than adult mice to develop a sensitization to the stimulant effects of ethanol. In a second set of experiments, 28 day-old mice were sensitized to ethanol for 14 days with high ethanol doses (2.5 or 4 g/kg) and then tested for the stimulant effects of ethanol and the development of ethanol sensitization in adulthood. The results of this second set of experiments show that mice sensitized to ethanol during their adolescence remain more sensitive to the acute stimulant effects of ethanol in adulthood, especially when high ethanol doses were administered. However, the rate of the development of a sensitization to this effect was only slightly affected relative to adult mice exposed to a chronic ethanol regimen for the first time. Together, these results indicate that adolescent mice are more sensitive to the stimulant effects of ethanol but require higher ethanol doses to develop a sensitization. However, when a sensitization develops during adolescence, these mice still experience higher ethanol stimulant effects when tested in adulthood. [less ▲]Detailed reference viewed: 30 (4 ULg) Maintenance of antifracture efficacy over 10 years with strontium ranelate in postmenopausal osteoporosisReginster, Jean-Yves ; Kaufman, J. M.; Devogelaer, J. P. et alin Arthritis and Rheumatism (2011), 63(S10), 436Detailed reference viewed: 35 (8 ULg) Long-term treatment of postmenopausal osteoporotic women with strontium ranelate : results at 10 yearsReginster, Jean-Yves ; Kaufman, J. M.; Devogelaer, J. D. et alin Annals of the Rheumatic Diseases (2011), 70(S3), 167Detailed reference viewed: 29 (8 ULg) Statistical analysis of low-flow based on short time series. The case of WalloniaVerstraete, Arnaud ; Gailliez, Sébastien; Degre, Aurore in Geophysical Research Abstracts (2011), 13The floods have always been the main concern resulting of extreme weather conditions. Now droughts and low flows are more and more recognized as risk situations due to the huge consequences of water ... [more ▼]The floods have always been the main concern resulting of extreme weather conditions. Now droughts and low flows are more and more recognized as risk situations due to the huge consequences of water shortage. Furthermore, the changing climate context constitutes a new threat even if the uncertainty in low-flows evolution remains high. In Wallonia (Southern part of Belgium), a knowledge gap remains on statistical analysis of low-flows. In this paper, we present a study of historical data in Walloon Region and the first steps of their statistical analysis. Wallonia is one of the three regions of Belgian federal state. It covers an area of 17000 km² and spreads on 4 districts (Meuse, Escaut, Rhin, Senne). The watercourses are divided in navigable watercourses (700km), not navigable watercourses that are listed in 3 categories (14300km) and streams that are not navigable and not listed (4000km). Hydrological monitoring has a short history in Wallonia. The first monitoring site was installed in 1960. It consisted in a limnimetric scale and daily manual readings. Since 1974, hourly data are recorded. The number of measurement sites reached 244 stations in 2011. About 60 % of the monitoring sites have less than 20 years of hourly data. A qualitative analysis of monitoring stations led us to disregard 184 stations. The main quality problems were important discharge rating curve extrapolation, algae development in summer or low flow inferior to 5l/s. In preparation for a statistical analysis of low-flows, the old manual daily readings were analyzed. Unusable in high flow situations, they still hold practical and usable information during drought. This analysis allowed us to extend the registration period up of 7 stations and to recover 16 stations. There were lots of missing data during the 1960-1994 period, due to a poor management of the monitoring network. A yearly hydrograph analysis leads us to keep years of partial measurement when the gaps were found to be out of the low-flow period. The monitoring sites presenting more than 20 years of readings were selected for the statistical analysis. A homogeneity test was performed. Finally 64 out of 244 monitoring sites are kept for the frequency analysis. The indicators used to characterize low-flows are the popular Q95 and MAM7. Five below bounded distributions are tested with the HYFRAN software: Weibull (2 parameters), log-normal 2 parameters and 3 parameters, Gamma and Pearson type III. The parameters of the laws are estimated by the maximum likelihood estimation. The selection of the three best laws is performed for each site thanks to three Bayesian criterions proposed by HYFRAN. Then the distribution that fits the best the data is visually chosen. The results of the adjustment method are the same for the two indicators. The Gamma distribution is the most used followed by the lognormal with 2 parameters. However in some cases a law of three parameters is more appropriate. This preliminary work gives a first analysis of low-flows statistics in Wallonia. Yet a lot of missing data or short recording duration still limits our knowledge, this analysis allows us to progress towards best management practices in rivers and watersheds. [less ▲]Detailed reference viewed: 53 (21 ULg) Safety observations from denosumab long-term extension and cross-over studies in postmenopausal women with osteoporosisBone, H. G.; Chapurlat, R.; Libanati, C. et alin Journal of Bone and Mineral Research (2011), 26(S1), 22-23Detailed reference viewed: 53 (1 ULg) NMHC Climatology from Central European Mountain ObservatoriesPlass-Duelmer, C.; Reimann, S.; Wallasch, M. et alin Geophysical Research Abstracts (2011), 13NMHC (non-methane hydrocarbons) are a major group of atmospheric trace gases with impact on photochemical processes in the atmosphere, especially oxidant formation with ozone being the most prominent of ... [more ▼]NMHC (non-methane hydrocarbons) are a major group of atmospheric trace gases with impact on photochemical processes in the atmosphere, especially oxidant formation with ozone being the most prominent of them, and contributions to SOA (secondary organic aerosols). By this, they are coupled to climate issues via the oxidizing capacity of the atmosphere, the greenhouse gas ozone and aerosol effects. NMHC monitoring was initiated in Europe in the “Tropospheric Ozone Research” project (1988-1995), and it was continued in EMEP and GAW (Global Atmosphere Watch) where it is an ongoing initiative which recently has been reinforced (GAW Report 171). In this presentation we will focus on time series from Central European mountain stations (46-49°N, 7-13°E): Hohenpeissenberg (985 m, DWD, Germany, 1998-ongoing), Rigi (1031 m, EMPA, Switzerland, 2003-ongoing), Junfraujoch (3580 m, EMPA, Switzerland, 2000-ongoing, and ULg (FTIR), Belgium, 1984-ongoing), Zugpitze (2650 m, UBA, Germany, 2000-ongoing), Schauinsland (1205 m, FZ-Jülich (1989-94), and UBA, Germany, 2004-ongoing), Brotjacklriegel (1016 m, UBA, Germany, 2000-2004), Donon (775 m, EMD, France, 1997-2007). Most sites used weekly flask samples but also on-line measurements were carried out with higher time resolution within the former TOR project and in the more recent time series at Hohenpeissenberg, Rigi, and Jungfraujoch. All samples were analysed by GC. Additionally to these GC measurements, a time series of column integrated acetylene and ethane by FTIR (Fourier Transform InfraRed spectrometry) is available from Jungfraujoch, from 1984 onwards. We focus here on time series of monthly averages of anthropogenic hydrocarbons over the 1997-2009 time period. They show quite similar patterns among the various stations over the whole period with pronounced seasonal cycles. Significantly lower mixing ratios were measured at the highest elevated sites, the Zugspitze and Jungfraujoch. Differences between the lower mountain sites (775-1200 m) are on first view surprisingly small. Generally, the differences between the high altitude and the other mountain sites are lowest in summer due to enhanced vertical mixing and thermal upslope winds. Downward trends for anthropogenic hydrocarbons are very similar at the various stations and are 2 %/yr for C2-C3 alkanes (+/- 1%), 3-6 %/yr for C4-C7 alkanes (+/- 2%), 2-3%/yr for C2-C3 alkynes and ethene (+/- 2%), 4 % /yr for propene and benzene (+/- 2%), and 5-10%/yr for toluene and xylenes (+/-3 and 5%, respectively). [less ▲]Detailed reference viewed: 28 (10 ULg) Method for the Measurement of Dechlorane 602 in Human SerumBrasseur, Catherine ; Pirard; Focant, Jean-François in Organohalogen Compounds (2011), 73Detailed reference viewed: 9 (3 ULg) A phase 3 study of the efficacy and safety of Denosumab in men with low bone mineral density : design of the ADAMOOrwoll, E.; Stubbe Teglbjaerg, Ch; Langdahl, B. et alin Journal of Bone and Mineral Research (2011), 26(S1), 511Detailed reference viewed: 20 (2 ULg) Reduction in incidence of vertebral fractures with once yearly zoledronic acid in men with osteoporosisBoonen, S.; Kaufman, J. M.; Reginster, Jean-Yves et alin Journal of Bone and Mineral Research (2011), 26(S1), 23Detailed reference viewed: 16 (1 ULg) Rapid changes of aromatase activity in discrete brain regions following social interactionsde Bournonville, Catherine ; Ball, Gregory, F.; Balthazart, Jacques et alin Trabajos del Instituto Cajal (2011), LXXXIIIDetailed reference viewed: 28 (11 ULg) Retrieving semantic information from faces and voicesBarsics, Catherine in In L. Carlson, C. Hoelscher, & T.F. Shipley (Eds.), Proceedings of the 33rd Annual Conference of the Cognitive Science Society (2011)Detailed reference viewed: 13 (4 ULg) Safety and Performance of Stochastic Targeted (STAR) Glycemic Control of Insulin and Nutrition – First Pilot ResultsShaw, Geoffrey M.; Le Compte, Aaron; Evans, Alicia et alin Intensive Care Medicine (2011)Detailed reference viewed: 12 (2 ULg) Maxwell rigidity and topological constraints in amorphous phase-change networksMicoulaut, M.; Otjacques, C.; Raty, Jean-Yves et alin AIP Conference Proceedings (2011), 1393By analyzing first-principles molecular-dynamics simulations of different telluride amorphous networks, we develop a method for the enumeration of radial and angular topological constraints, and show that ... [more ▼]By analyzing first-principles molecular-dynamics simulations of different telluride amorphous networks, we develop a method for the enumeration of radial and angular topological constraints, and show that the phase diagram of the most popular system Ge-Sb-Te can be split into two compositional elastic phases: a tellurium rich flexible phase and a stressed rigid phase that contains most of the materials used in phase-change applications. This sound atomic scale insight should open new avenues for the understanding of phase-change materials and other complex amorphous materials from the viewpoint of rigidity. [less ▲]Detailed reference viewed: 14 (0 ULg) Denosumab therapy in postmenopausal women with osteoporosis : results from the first two years of the freedom trial extensionBone, H. G.; Chapurlat, R.; Brandi, M. L. et alin Endocrine Reviews (2011), 32Detailed reference viewed: 43 (1 ULg) Glucosamine sulfate for structure modification in osteoarthritis : fact of fantasy ?Reginster, Jean-Yves in Ortopedia, Traumatologia, Rehabilitacja (2011), 13(S1), 44Detailed reference viewed: 9 (1 ULg) Cryogenic Zone Compression Gas Chromatography Combined With High Resolution Mass Spectrometry (CZC GC-HRMS) - Approaches to Sub Femtogram Level Analysis of DioxinsKrumwiede, D; Mehlmann; Focant, Jean-François et alin Organohalogen Compounds (2011), 73Detailed reference viewed: 7 (0 ULg) Automated Procedures in Iso17025 Routine Dioxin Laboratory:Impact on the ThroughputFocant, Jean-François ; Scholl, Georges ; Eppe, Gauthier et alin Organohalogen Compounds (2011), 73Detailed reference viewed: 19 (1 ULg) Effects of different spatial interpolators on the estimate of extreme precipitationsLy, Sarann ; Beckers, Eléonore ; Charles, Catherine et alin Geophysical Research Abstracts (2011), 13The design values of the areal precipitation are needed for engineer to manage vital elements of our infrastructure. The areal precipitation can be generated by different interpolation methods. The ... [more ▼]The design values of the areal precipitation are needed for engineer to manage vital elements of our infrastructure. The areal precipitation can be generated by different interpolation methods. The problem involves choosing the interpolation method that we should use to estimate the extreme event. This work aimed at analyzing the effects of different interpolation methods on the estimate of extreme events of daily areal precipitations at catchment scale. The extreme rainfalls were estimated using areal daily rainfall interpolated by several interpolation methods (Thiessen polygon, Inverse Distance Weighting, Ordinary Kriging, Universal Kriging, Kriging with an External Drift and Ordinary Cokriging). We used thirty-years-long daily time series and different density of rain gages (from 4 to 70 rain gages). Our study is located in the Ourthe and Ambleve catchment area (2908 km²) in the southern part of Belgium). Spatial interpolation with the geostatistical and Inverse Distance Weighting algorithms outperformed considerably interpolation with the Thiessen polygon. Kriging with an External Drift and Ordinary Cokriging presented the highest Root Mean Square Error between the geostatistical and Inverse Distance Weighting methods. Ordinary Kriging and Inverse Distance Weighting were considered to be the best methods, as they provided smallest Root Mean Square Error for nearly all cases. However, it’s not really the case of extreme estimates for particular return period. The extreme daily rainfall, corresponding to return periods of 25, 50 and 100 years, were computed by fitting of a statistical model to the series of maximum annual precipitation. These estimates were conducted using HYFRAN which allows us to fit 16 different statistical models, in 2 or 3 parameters. The most known are the models of Gumbel, Gamma, Weibull, exponential, Pareto, lognormale, Pearson III and GEV. Our results showed that the behaviour of extreme daily areal rainfall in this area was best described via the Gumbel and lognormal distributions. Using 70 rain gages, little differences in extreme rainfall were observed between the interpolation methods. The estimates from these methods were in the area of 95% confidence intervals of the estimates using the Thiessen polygon. However, when the number of rain gages diminishes, the Universal Kriging and Kriging with External drift methods produced extreme estimates outside the area of 95% confidence intervals of the estimates using the Thiessen polygon with all available stations. The analysis described here provides a means to choose the interpolation method in view to calculate extreme events. It shows to engineers or hydrologists the need for a particular care when working in the regions of sparse data. [less ▲]Detailed reference viewed: 111 (35 ULg) Dioxins in Human Milk from Different Regions of France: Pilot of the French Longitudinal Study of Children (ELFE)Vandentoren, S; Frery, N; Bidondo, ML et alin Organohalogen Compounds (2011), 73Detailed reference viewed: 17 (2 ULg) Enumeration and decidable properties of automatic sequencesCharlier, Emilie ; Rampersad, Narad; Shallit, Jeffreyin Lecture Notes in Computer Science (2011), 6795We show that various aspects of k-automatic sequences — such as having an unbordered factor of length n — are both decidable and effectively enumerable. As a consequence it follows that many related ... [more ▼]We show that various aspects of k-automatic sequences — such as having an unbordered factor of length n — are both decidable and effectively enumerable. As a consequence it follows that many related sequences are either k-automatic or k-regular. These include many sequences previously studied in the literature, such as the recurrence function, the appearance function, and the repetitivity index. We also give a new characterization of the class of k-regular sequences. Many results extend to other sequences defined in terms of Pisot numeration systems. [less ▲]Detailed reference viewed: 13 (4 ULg) ION MOBILITY – MASS SPECTROMETRY AS A NEW APPROACH FOR THE SCREENING OF PESTICIDE RESIDUES IN FOODGoscinny, Séverine ; Touilloux, Romain; Joly, Laure et alin Organohalogen Compounds (2011)Pesticide residue analysis requires methods that can determine hundreds of compounds at low levels in complex food matrices. This challenge has given rise to multi residue methods, the only efficient ... [more ▼]Pesticide residue analysis requires methods that can determine hundreds of compounds at low levels in complex food matrices. This challenge has given rise to multi residue methods, the only efficient analytical approach. This type of analytical method entails a “generic” extraction followed by a soft or no purification step to avoid any analytes looses. With over a 1000 active compounds with different physical chemical properties, gas and liquid chromatography are used as complementary separative techniques. In the past decade, the determination has been performed on tandem mass analyzers, a powerful tool to overcome co-eluting compounds with excellent sensitivity. Nevertheless, these instruments can guarantee these results per acquisition cycles for more or less 150 compounds. This represents a serious limitation when the number of pesticides to be sought for monitoring and MRL enforcement is growing each year. As multiple injections from the same sample are not viable for laboratories, alternative options have to be explored. We propose the investigation of ion mobility (IM) coupled with mass spectrometry as a new approach for pesticide residue analysis in food. [less ▲]Detailed reference viewed: 51 (2 ULg) Levels of PCDD/Fs and PCBs in Camel Milk (Camelus Bactrianus and Camelus Dromedarius) from KazakhstanKonuspeyeva, G; Faye, B; De Pauw, Edwin et alin Organohalogen Compounds (2011), 73Detailed reference viewed: 17 (0 ULg) Les modèles de l'entrepreneuriat social en Asie de l'EstDefourny, Jacques in Social Enterprise Journal (2011), 7(1), 86-111Detailed reference viewed: 96 (17 ULg) Study of the forbidden oxygen lines in a dozen comets observed at the VLT (ESO)Decock, Alice ; Jehin, Emmanuel ; Manfroid, Jean et alin EPSC Abstracts 2011 (2011)The forbidden lines are difficult to analyse because their detection requires high spectral and spatial resolutions. Their analysis is however interesting because it allows the determination of the ... [more ▼]The forbidden lines are difficult to analyse because their detection requires high spectral and spatial resolutions. Their analysis is however interesting because it allows the determination of the spatial distribution and the production rate of the parent molecules, supposedly H2O which doesn't have any feature in the optical range. But as shown by Cochran [2] [3], some issues remain about the nature of the parents of the oxygen atoms. Moreover the width of the green line was found larger than that of the red lines. One of the goals of this study is to determine the parent species that photo-dissociate to produce oxygen atoms and see how this process depends on the heliocentric distance. We present here the results of the analysis of a homogeneous set of high quality spectra of 13 different comets observed with UVES at the ESO VLT since 2002 [4] [5]. [less ▲]Detailed reference viewed: 25 (8 ULg) Influence of practice characteristics on injury risk in young athletesFrisch, Anne ; Urhausen, Axel; Seil, Romain et alin British Journal of Sports Medicine (2011), 45Detailed reference viewed: 6 (0 ULg) Training on the alert phone CPR protocol in belgium : evaluation of the dispatchersEl Fassi, Mehdi; Skivee, V.; STIPULANTE, Samuel et alin Acta Clinica Belgica (2011), 66(2), 9Detailed reference viewed: 15 (1 ULg) Evaluation de la performance des muscles extenseurs du troncDemoulin, Christophe ; GROSDENT, Stéphanie ; Crielaard, Jean-Michel et alin Kinesitherapie Revue (2011), 111Detailed reference viewed: 53 (4 ULg) Genetic relationships between fertility and content of major fatty acids in milk for first-parity Wallon Holstein cowsBastin, Catherine ; Gengler, Nicolas ; Soyeurt, Hélène in Journal of Dairy Science (2011), 94 E-Suppl 1Detailed reference viewed: 27 (6 ULg) Comparison of subjective and objective methods to assess physical activity in professionally active adultsDemoulin, Christophe ; Prud'homme, M.; GROSDENT, Stéphanie et alin Physiotherapy (2011), 97Detailed reference viewed: 17 (5 ULg) Impact of thresholding techniques on X-ray soil microtomogram analysesBeckers, Eléonore ; Léonard, Angélique ; Beekkerk van Ruth, Jöran et alin Geophysical Research Abstracts (2011), 13Using X-ray microtomography, 3D soil structure can be visualised and analysed through useful factors like pore size distribution, shape, connectivity, orientation, etc. X-ray scans yield grey-level 2D ... [more ▼]Using X-ray microtomography, 3D soil structure can be visualised and analysed through useful factors like pore size distribution, shape, connectivity, orientation, etc. X-ray scans yield grey-level 2D images, which can be recombined to form 3D structures. Treatments of the grey-level images can consist of either a binarization -distinguishing soil and pores- or a permeability level attribution directly linked to the grey-level values. The latter leads to problems in order to assign a permeability for each point (in soil a same grey level value can be assigned to points with a different permeability), as well as to analyse the 3D structure. On the other hand, treatment of black and white 3D structures is well-handled. However, the impact of the choice of one thresholding technique on the resulting images has already been demonstrated. Moreover, thresholding methods are various and numerous. Many of them are based on the image histogram analysis. But because of the soil complexity, the relevance of these techniques becomes debatable, with a risk of producing non reliable images. We propose to palliate this with a simple new algorithm based on physical measurements: it uses a loop fixing the threshold value in order to match the measured porosity for each sample. In this communication, our point is to highlight the impact of different thresholding techniques on the analysis and interpretation of our soil microtomograms. The underlying questions could be: Does the thresholding method influence our conclusions? Are the results depending on the sample itself or on the methodology? In order to answer these questions we tested the Otsu technique and our physically based algorithm. Soils samples were removed from the upper layer (Ap horizon) of a silty soil (Gentinnes, Brabant Walloon, Belgium) in plots with different management practices. In fact, since 2004, the field has been cultivated in conventional tillage (CT) or reduced tillage (RT). In order to empty the meso- and macroporosity, samples were placed under a 1.5 MPa pressure (Richards apparatus). Samples were then scanned by X-ray microtomography using a Skyscan-1172 high-resolution desktop micro-CT system (Skyscan, Kontich, Belgium). The cone beam source operated at 100 kV, using an aluminium filter. The detector configuration, i.e. 1048x2000 pixels with a 16-bit X-ray camera, and the distance source-object-camera were adjusted to produce images with a pixel size of 17 µm. Porosity was measured for each scanned sample. Then the threshold methods -the Otsu technique on one hand and our developed algorithm on the other - were applied, and morphological factors were calculated for both methods. A comparison of the first results shows a threshold influence on average porosity and number of pores, but also on connectivity factors and size distribution. The apparent porosity of the images, as well as connectivity, is underestimated with the Otsu technique. Despite the fact that the changes induced by thresholding are more important for RT than CT, global conclusions about the comparison of these agricultural practices are approximately the same in this case. However, differences between tillage systems are less important with the Otsu method, confirming the impact of choosing the adapted threshold method. [less ▲]Detailed reference viewed: 67 (26 ULg) Experimental characterization and constitutive modeling of TA6V mechanical behavior in plane strain state at room temperatureGilles, Gaëtan ; Tuninetti Vásquez, Victor ; Ben Bettaieb, Mohamed et alin AIP Conference Proceedings (2011), 1383This paper presents an experimental and theoretical study of the quasi-static behavior of TA6V titanium alloy in plane strain state. In order to quantify the anisotropy of the material, tests were carried ... [more ▼]This paper presents an experimental and theoretical study of the quasi-static behavior of TA6V titanium alloy in plane strain state. In order to quantify the anisotropy of the material, tests were carried out at room temperature on specimens cut out from a sheet along three loading directions. The initial yield locus is described by the phenomenological CPB06ex3 criterion and Voce’s type isotropic hardening is used. Finite element simulations are performed and compared with the experiments. [less ▲]Detailed reference viewed: 51 (32 ULg) Furan formation in baby food model system via lipid oxidation and sugar degradationOwczarek-Fendor, Agnieszka; De Meulenaer, Bruno; Scholl, Georges et alin Communications in Agricultural and Applied Biological Sciences (2011), 76(1), 107-110Detailed reference viewed: 27 (8 ULg) RELATIONS ENTRE GAIN BARO-REFLEXE ET STRESS PULSATILE CHEZ LE PATIENT DIABETIQUE DE TYPE 1SCHEEN, André ; MARCHAND, Monique ; PHILIPS, Jean-Christophe in Archives des Maladies du Coeur et des Vaisseaux (2011), hors série 3Detailed reference viewed: 7 (0 ULg) Traitement durant cinq ans par denosumab (DMAb) chez des femmes ménopausées ostéoporotiques : résultats d'efficacité des deux premières années de l'extension de l'essai FREEDOMChapurlat, R.; Roux, C.; Papapoulos, S. et alin Revue du Rhumatisme (2011), 78(S5), 214Detailed reference viewed: 11 (1 ULg) Trend evolution and seasonal variation of tropospheric and stratospheric carbonyl sulfide (OCS) above JungfraujochLejeune, Bernard ; Mahieu, Emmanuel ; Duchatelet, Pierre et alin Geophysical Research Abstracts (2011), 13Carbonyl sulfide (OCS) is the most abundant sulfur-containing trace gas in the atmosphere and accounts for a substantial portion of the sulfur in the stratospheric aerosol layer which influences the ... [more ▼]Carbonyl sulfide (OCS) is the most abundant sulfur-containing trace gas in the atmosphere and accounts for a substantial portion of the sulfur in the stratospheric aerosol layer which influences the Earth’s radiation budget and stratospheric ozone chemistry. The major identified OCS sources are oceans and anthropogenic emissions, while atmospheric loss and uptake by vegetation and soils constitute the main OCS sinks. The uptake by vegetation strongly influences the distribution and seasonality of OCS throughout most of the Northern Hemisphere, just like for CO2. Montzka et al. (2007) pointed that atmospheric OCS measurements have the potential to constrain the biomass Gross Primary Production (GPP). Unfortunately, there remain large uncertainties on some components strengths of the atmospheric OCS budget. A recent work by Suntharalingam et al. (2008) showed that uptake by plants has been strongly underestimated in actual balanced budgets, suggesting that additional significant OCS sources have still to be identified. In order to improve our understanding of the different processes governing seasonal and inter-annual OCS variability, a new approach has been developed and optimized, using the SFIT-2 algorithm, to retrieve atmospheric abundance of OCS from high-resolution ground-based infrared solar spectra. Our observations are recorded on a regular basis with Fourier Transform Infrared spectrometers (FTIRs), under clear-sky conditions, at the NDACC site (Network for the Detection of Atmospheric Composition Change, http://www.ndacc.org) of the International Scientific Station of the Jungfraujoch (Swiss Alps, 46.5°N, 8.0°E, 3580m asl). Information content analysis of the retrieved OCS products shows us that we are able to distinguish between tropospheric and stratospheric partial column contributions for this species. Thanks to our unique observational database, we have produced an updated OCS long-term trend from 1995 to 2010, representative for both the troposphere and stratosphere at northern mid-latitudes. In this contribution, we will present and critically discuss the recent OCS trend evolution, in particular the end of the slow decline of its abundance observed in 2002 and the maximum reached in 2008. In addition to the OCS inter-annual variations, we will analyze the OCS seasonal cycle during the 15 last years. We will also compare our results with simulations of seasonal OCS variations issued from a 3D global atmospheric chemical transport model (CTM), in order to try to quantify the individual contribution of the various processes playing a role in the Jungfraujoch OCS variability and influencing its atmospheric abundance. [less ▲]Detailed reference viewed: 68 (18 ULg) Constraining statistical-model parameters using fusion and spallation reactionsMancusi, D.; Charity, R. J.; Cugnon, Joseph in European Physics Journal: Web of conferences (2011)Detailed reference viewed: 15 (7 ULg) Trend and lifetime of sulfur hexafluoride at mid-latitudes deduced from ACE-FTS occultation measurementsMahieu, Emmanuel ; Duchatelet, Pierre ; Zander, Rodolphe et alin Geophysical Research Abstracts (2011), 13Sulfur hexafluoride (SF6) is one of the strongest greenhouse gases on a per molecule basis, with a global warming potential of 22800 (100-yr horizon). This is an extremely stable gas in the atmosphere ... [more ▼]Sulfur hexafluoride (SF6) is one of the strongest greenhouse gases on a per molecule basis, with a global warming potential of 22800 (100-yr horizon). This is an extremely stable gas in the atmosphere, which results in a very long lifetime, with large uncertainties. The value adopted by IPCC is 3200 years, but some studies suggest shorter lifetimes, as low as 800 years. Surface concentrations are now about 7 ppt, with reported trends indicating a steady and strong increase of 0.3 ppt/yr. Most emissions are of anthropogenic origin, related to its use as an insulator in high-voltage electrical installations. Secondary contributions result from magnesium and aluminum production as well as from the manufacturing of semiconductors (see e.g. Levin et al., 2010; Rigby et al., 2010 and references therein). In this contribution, we use occultation measurements performed by the ACE-FTS (Atmospheric Chemistry Experiment Fourier Transform Spectrometer) instrument, launched in August 2003 onboard the Canadian SCISAT satellite (Bernath et al., 2005). ACE-FTS is still in operation to date, with no significant degradation in its performance. This spectrometer achieves a spectral resolution of 0.02 cm-1 in the broad 750-4400 cm-1 range which covers the unresolved nu-3 band Q branch of SF6 centered at 947.9 cm-1. Signal-to-noise ratios of 200-300 are typically obtained in the spectral region of interest. Version 3 retrievals performed by University of Waterloo give volume mixing ratio profiles of SF6 in the 11-32 km altitude range. We consider all available sunrise and sunset occultation measurements obtained at midlatitudes in both hemispheres to derive the trend of SF6 in the lower stratosphere, from late February 2004 onwards. Consistency between both hemispheres will be investigated. In addition, concurrent N2O measurements are used to evaluate the atmospheric lifetime of SF6, following a method used previously for other long-lived gases (e.g. Zander et al, 1996). Comparisons with trends derived from in situ surface measurements or from ground-based remote-sensing observations (e.g. at the Jungfraujoch station, 46.5ºN) are also included. [less ▲]Detailed reference viewed: 34 (4 ULg) Finite orbits of language operationsCharlier, Emilie ; Domaratzski, Michael; Harju, Tero et alin Lecture Notes in Computer Science (2011), 6638We consider a set of natural operations on languages, and prove that the orbit of any language L under the monoid generated by this set is finite and bounded, independently of L. This generalizes previous ... [more ▼]We consider a set of natural operations on languages, and prove that the orbit of any language L under the monoid generated by this set is finite and bounded, independently of L. This generalizes previous results about complement, Kleene closure, and positive closure. [less ▲]Detailed reference viewed: 21 (3 ULg) Récit de paroles et expériences de l’altérité dans Le Monde vrai de MarivauxTilkin, Françoise in Philologia (2011), XXI(Supplementum I), 281-290Detailed reference viewed: 18 (5 ULg) Taux sérique de vitamine D et réponse au traitement par alendronateRoux, C.; Chartier, C.; Boonen, S. et alin Revue du Rhumatisme (2011), 78(S5), 102Detailed reference viewed: 14 (3 ULg) Les ostéoblastes des zones sclérosées de l’os sous-chondral arthrosique expriment moins de connexine-43 : une explication possible à la diminution de la sensibilité mécanique de ces cellulesSanchez, Christelle ; Pesesse, Laurence ; Henrotin, Yves in Revue du Rhumatisme (2011), 78(suppl 5), 75Detailed reference viewed: 9 (0 ULg) Oscillations in rapidly rotating starsReese, Daniel in Astronomische Nachrichten (2010, December 01), 331Spurred by the spectroscopic and interferometric observations of rapidly rotating stars and the highly accurate pulsation data coming from asteroseismology space missions, theoreticians have spent many ... [more ▼]Spurred by the spectroscopic and interferometric observations of rapidly rotating stars and the highly accurate pulsation data coming from asteroseismology space missions, theoreticians have spent many years developing models for such stars and studying their oscillations. This has led to the discovery of new phenomena and new types of pulsation modes. In what follows, a review is given of the different methods used to model the effects of rotation on stellar pulsations, as well as a description of these effects on inertial, gravito-inertial, r and acoustic modes. [less ▲] Evolution of the Kızılırmak river and its interaction with the North Anatolian Fault, TurkeyDrab, Laureen; Hubert, Aurelia ; Benedetti, Lucilla et alin AGU Abstract (2010, December)Detailed reference viewed: 28 (1 ULg) Application of magnetic susceptibility to the Maastrichtian-Eocene phosphatic deposits of Séjla section in Gafsa-Métlaoui basin (Southern Tunisia)Akermi, Souha; Abdallah, H.; Da Silva, Anne-Christine et alin Geologica Belgica (2010, December), 13(4), Detailed reference viewed: 45 (6 ULg) Magnetic susceptibility records in recent (Cenozoic) and Ancient (Devonian – Palaeozoic) mound systems.Foubert, Anneleen; Da Silva, Anne-Christine ; Boulvain, Frédéric et alin Geologica Belgica (2010, December), 13(4), Detailed reference viewed: 32 (3 ULg)