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See detailImproving TCP in wireless networks with an adaptive machine-learnt classifier of packet loss causes
El Khayat, Ibtissam; Geurts, Pierre ULg; Leduc, Guy ULg

in Lecture Notes in Computer Science (2005, May), 3462

TCP understands all packet losses as buffer overflows and reacts to such congestions by reducing its rate. In hybrid wired/wireless networks where a non negligible number of packet losses are due to link ... [more ▼]

TCP understands all packet losses as buffer overflows and reacts to such congestions by reducing its rate. In hybrid wired/wireless networks where a non negligible number of packet losses are due to link errors, TCP is unable to sustain a reasonable rate. In this paper, we propose to extend TCP Newreno with a packet loss classifier built by a supervised learning algorithm called 'decision tree boosting'. The learning set of the classifier is a database of 25,000 packet loss events in a thousand of random topologies. Since a limited percentage of wrong classifications of congestions as link errors is allowed to preserve TCP-Friendliness, our protocol computes this constraint dynamically and tunes a parameter of the classifier accordingly to maximise the TCP rate. Our classifier outperforms the Veno and Westwood classifiers by achieving a higher rate in wireless networks while remaining TCP-Friendly. [less ▲]

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See detailGeneralized Shape optimization based on the Level Set method
Van Miegroet, Laurent ULg; Moës, Nicolas; Fleury, Claude ULg et al

in Herskowitz, José (Ed.) Proceedings of the 6th World Congress of Structural and Multidisciplinary Optimization (WCSMO6) (2005, May)

This paper describes a first step work devoted to applying XFEM and Level Sets methods in optimization of structures. This first step work is based on integrating an existing XFEM code within a general ... [more ▼]

This paper describes a first step work devoted to applying XFEM and Level Sets methods in optimization of structures. This first step work is based on integrating an existing XFEM code within a general open optimization tool, SAMCEF BOSS QUATTRO. Unlike most of the existing works, this approach is more shape optimization oriented. A library of pre-formatted basic geometric entities (such as ellipses, squares, triangles, etc.) described by Level Sets functions are used. These basic Level Set features can be combined to represent many kinds of interfaces and holes. The construction parameters of the basic Level Sets are considered as the design variables. In order to evaluate the sensitivities, a finite difference scheme over the design variables is used in this first work. Different mechanical responses (energy, weight, displacement, . . .) can be considered as objective functions or constraints in the problem formulation. Several academic 2D test cases of shape and topology optimization are presented within the XFEM and Level Set approach. In addition, a work by Missoum et al. [11], in which the shape and topology optimization of the structure is carried out by an optimal selection of holes characteristics with a genetic algorithm is presented. [less ▲]

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See detailPlant Pathology unit of Gembloux: research activities and prospective
Jijakli, Haissam ULg

Conference (2005, May)

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See detailProduction of resorcinol formaldehyde xerogels by convective drying
Léonard, Angélique ULg; Jomaa, Wahbi; Crine, Michel ULg

in Proceedings of the joint conference of AFSIA (Association Française pour le Séchage dans l’Industrie et l’Agriculture) and Working group on Drying of EFCE at INA P-G, Paris, 12th and 13th May, 2005 (2005, May)

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See detailCaracterization del jambon belga de las ardenas.
Hannecart, François; Deroanne, Claude; Sindic, Marianne ULg

in Abstracts du 3ème Congrès mondial du jambon sec (2005, May)

Detailed reference viewed: 87 (5 ULg)
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See detailFoam and its control in fermentation process
Etoc, Ariane; Delvigne, Frank ULg; Lecomte, Jean-Pol et al

Conference (2005, April 30)

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See detailThe combined impact of changing terrestrial organic carbon reservoirs and fractionation effects induced by changing carbonate ion concentrations on the glacial-interglacial marine C-13 record
Munhoven, Guy ULg; François, Louis ULg; Ouberdous, Mohamed ULg

Conference (2005, April 27)

On the basis of the marine and atmospheric glacial-interglacial C-13 isotopic records, it has been calculated that the land biospheric carbon stock must have increased by 270–720 GtC from the Last Glacial ... [more ▼]

On the basis of the marine and atmospheric glacial-interglacial C-13 isotopic records, it has been calculated that the land biospheric carbon stock must have increased by 270–720 GtC from the Last Glacial Maximum (LGM) to the present. Estimates derived from vegetation mapping based on palynological or sedimentological data generally indicate a larger increase of the biospheric stock in the range of 700–1350 GtC and above. Although there is some overlap between the two ranges, they substantially disagree. Further complications arise when carbonate-ion dependent fractionation effects in the marine C-13 record are considered. A detailed budget of the C-13 isotope in the land biosphere at the LGM, as well as in the other reservoirs of the global carbon cycle is therefore required. Here, we analyse the response of the atmosphere–ocean–surface sediment system under the influence of variable release and uptake fluxes of C by the terrestrial biosphere. Glacial-interglacial variations of the carbon stocks and isotopic budgets of the land biosphere were derived from simulation experiments carried out with the global biosphere model CARAIB (CARbon Assimilation In the Biosphere) under boundary conditions typical for the Last Glacial Maximum and for mid-Holocene times. CARAIB uses a mechanistic description of both C3 and C4 photosynthetic pathways. It thus provides information on the C-13 signature of carbon fluxes involved. Using the eleven-box model MBM of the ocean-atmosphere system, we then investigate the effect of these biospheric changes on the oceanic carbon cycle and the CO2 concentration in the atmosphere. MBM has a complete representation of the transfer processes of carbon and alkalinity from the land to the ocean, and between the ocean and the surface sediment, including parameterisations for processes in the shelf area. MBM also considers C-13 signatures of the carbon fluxes and stocks represented. On the basis of empirical relationships for the incorporation of C-13 isotopes in foraminiferal shells as a function of carbonate ion concentration, synthetic carbon isotopic records are generated from the calculated seawater C-13 isotopic evolution, helping to better constrain estimates of the land biosphere carbon stock changes derived from the marine C-13 record. These simulations also test various scenarios for the alkalinity input to the system from weathering, which, through their effect on carbonate ion concentration, may also impinge to a non negligible extent on C-13 variations recorded in deep-sea sediments. [less ▲]

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See detailAnesthésie du patient asthmatique
Brichant, Jean-François ULg

Conference (2005, April 27)

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See detailSincérité et mensonge dans les manuscrits de Yale
Cormann, Grégory ULg

Conference (2005, April 25)

Detailed reference viewed: 7 (0 ULg)
See detailChina : the new economic power of the 21st century
Hermans, Michel ULg

Conference (2005, April 25)

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See detailDescription of Saturn’s auroral morphology during Cassini’s approach of the magnetosphere
Grodent, Denis ULg; Gérard, Jean-Claude ULg; Cowley, S. W. et al

Conference (2005, April 24)

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See detailDo echinoderms store temperature changes in their skeleton?
Ranner, Herwig; Ladrière, Ophélie ULg; Navez, Jacques et al

Poster (2005, April 24)

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See detailTypical and atypical myopathies of horses
Votion, Dominique ULg

in 2ème Congrès de biologie clinique (2005, April 24)

Une fonction musculaire efficiente repose sur l’intégrité fonctionnelle des systèmes nerveux et musculaire. Les myopathies peuvent résulter d’atteintes nerveuses (myopathies neurogéniques) ou musculaires ... [more ▼]

Une fonction musculaire efficiente repose sur l’intégrité fonctionnelle des systèmes nerveux et musculaire. Les myopathies peuvent résulter d’atteintes nerveuses (myopathies neurogéniques) ou musculaires (myopathies myogéniques). La classification des myopathies selon leur origine n’est pas aisée car, quel que soit le processus pathologique initial, les signes cliniques et les lésions histologiques sont souvent aspécifiques. Dans cet écrit, les principales myopathies équines sont classées selon le tableau clinique. Ainsi, les subdivisions de ce classement incluent le diagnostic différentiel des principales atteintes neuromusculaires. Un type de myopathie pouvant avoir différents tableaux cliniques, il peut se retrouver plusieurs fois dans le tableau. Le détail des principales myopathies équines est précédé de la description des outils dont dispose le vétérinaire afin de poser le diagnostic de myopathie voire de spécifier le type de myopathie dont souffre le cheval. [less ▲]

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See detailUtilisation des IEC ou des sartans en pathologie
Krzesinski, Jean-Marie ULg

Conference (2005, April 21)

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See detailFeelings of justice at school: Results of a survey among 8th graders in Europe
Baye, Ariane ULg

Conference (2005, April 13)

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See detailEquity in Education: A typology of European Educational Systems
Baye, Ariane ULg

Conference (2005, April 13)

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See detailEvidence for HLA-DQA1 locus being associated with abdominal aortic aneurysms in the Belgian population
Ogata, T.; Gregoire, L.; Goddard, K. A. et al

in Circulation (2005, April 12), 111(14), 219

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See detailBioencapsulated animal cell and biopolymers : preparation and applications in biomedical fields
Markvicheva, E; Svirshchevskay, E; Grandfils, Christian ULg et al

Poster (2005, April 03)

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See detailDrogas de especies representativas del ecosistema costero de El Saler (Valencia)
Cascales - Miñana, Borja ULg; Soriano, Pilar; Martínez-Solís, Isabel

Poster (2005, April)

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See detailNumerical Simulation of Cold Roll Forming Process
Bui, Quoc Viet; Papeleux, Luc ULg; Boman, Romain ULg et al

in Banabic, Dorel (Ed.) Proceedings of the 8th ESAFORM Conference on Material Forming (2005, April)

Cold roll-forming process of a U profile is modelled and simulated. The simulation is based on a 3D finite element analysis with the help of the home made Metafor code. The prediction on dimensions and ... [more ▼]

Cold roll-forming process of a U profile is modelled and simulated. The simulation is based on a 3D finite element analysis with the help of the home made Metafor code. The prediction on dimensions and deformed shape of the cold roll-formed sheet is in good agreement with the experimental results. Parametric study on roll forming parameters, such as the yield limit and the hardening property of materials, and the distance between stations is performed. [less ▲]

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See detailImproved Algorithms for Network Topology Discovery
Donnet, Benoît ULg; Friedman, Timur; Crovella, Mark

in International Workshop on Passive and Active Network Measurement (2005, April)

Topology discovery systems are starting to be introduced in the form of easily and widely deployed software. However, little consideration has been given as to how to perform large-scale topology ... [more ▼]

Topology discovery systems are starting to be introduced in the form of easily and widely deployed software. However, little consideration has been given as to how to perform large-scale topology discovery efficiently and in a network-friendly manner. In prior work, we have described how large numbers of traceroute monitors can coordinate their efforts to map the network while reducing their impact on routers and end-systems. The key is for them to share information regarding the paths they have explored. However, such sharing introduces considerable communication overhead. Here, we show how to improve the communication scaling properties through the use of Bloom filters to encode a probing stop set. Also, any system in which every monitor traces routes towards every destination has inherent scaling problems. We propose capping the number of monitors per destination, and dividing the monitors into clusters, each cluster focusing on a different destination list. [less ▲]

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See detailExperimental validation of a diffusion equation-based modeling of the sound field in coupled rooms
Billon, Alexis ULg; Valeau, Vincent; Picaut, Judicaël et al

in Journal of the Acoustical Society of America (2005, April), 117(4), 2581-2581

Sound modeling in coupled rooms (i.e., two acoustically coupled rooms separated by an open area) has attracted considerable attention in the past. However accurate and operational models are still needed ... [more ▼]

Sound modeling in coupled rooms (i.e., two acoustically coupled rooms separated by an open area) has attracted considerable attention in the past. However accurate and operational models are still needed, principally when three or more rooms are coupled. In recent papers, a diffusion equation-based model has been applied to unusual room shapes. For the coupled rooms geometry, this diffusion model has been validated successfully by comparison with the classical statistical theory in a parametrical study of the coupling parameters [Billon et al., J. Acoust. Soc. Am. 116, 2553 (2004)]. In the present work, the diffusion model results are validated by means of a comparison with experimental results, both in terms of sound attenuation and reverberation time. A comparison is also provided with results given by the statistical theory and a ray tracing program. For this purpose, experiments have been conducted in two coupled classrooms with two different sound source locations. The results show a very good agreement between the diffusion model and the experiments. Conversely, the statistical model is not valid for modeling accurately the sound field distribution and decay in both coupled rooms. At last, the diffusion model runs much faster than the ray tracing program. [less ▲]

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See detailA nation-wide project for the revision of the Belgian Nursing Minimum Data Set : from concept to implementation
SERMEUS, Walter; VAN DEN HEEDE, Koen; MICHIELS, Dominik et al

in OUD, Nico; SERMEUS, Walter; EHNFORS, Margareta (Eds.) Proceedings of the fifth biennial European Conference of the Association for Common European Nursing Diagnoses, Interventions and Outcomes (2005, April)

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See detailA 12-year study of the upstream migration of Anguilla anguilla in a fish-pass in the river Meuse reveals a dramatic decline of the stock in Belgium.
Philippart, Jean-Claude ULg; Ovidio, Michaël ULg; Sonny, Damien

Conference (2005, April)

From 1992 to 2004 upstream migrating eels were collected in a trap (0,5 cm mesh size) installed at the top of a small pool-type fish-pass at the Visé-Lixhe dam (built in 1980 for navigation purposes and ... [more ▼]

From 1992 to 2004 upstream migrating eels were collected in a trap (0,5 cm mesh size) installed at the top of a small pool-type fish-pass at the Visé-Lixhe dam (built in 1980 for navigation purposes and hydropower generation; height : 8,2 m; not equipped with a ship-lock) on the international River Meuse near the Dutch -Belgium border (290 km from the North Sea; width: 200 m; mean annual discharge: 238 m3/s; summer water temperature 21-26°C).The trap in the fish-pass was checked continuously (three times a week) over the migration period from March to September each year, except in 1994. We caught a total number of 32157 eels (biomass 1,955 kg) with a size from 14 cm to 85 cm and a mean value of 31,6 cm corresponding to yellow eels. The study based on a constant year-to-year sampling effort revealed a regular decrease of the annual catch from a maximun of 5613 fish in 1992 to a minimum of 423 in 2004. This demographic trend is fitted by the equation: number per year = 5.614 - 299 t, where t is time in years with 1992 as year 1. According to this model, the upstream migrating yellow eelstock in the Belgian Meuse should drop to near zero within the next ten years, as an expression of a collapsing recruitment of glass eels in the estuary in the Netherlands. In the discussion of these results, we examine the possible role of two other factors on the decrease over time of the number of yellow eels caught in the fish-pass. i) the effect of environmental variables (river discharge, water temperature and dissolved oxygen content) on the timing and intensity of upstream migration waves and ii) the existence and use of alternative migration routes. [less ▲]

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See detailAnalysis of isokinetic parameters in the development of anterior knee pain syndrome: a prospective study in a military setting
Van Tiggelen, D.; Witvrouw, E.; Coorevits, P. et al

in Abstract Book of the XIV International Congress on Sports Rehabilitation and Traumatology: «The Accelerated Rehabilitation of the Injured Athlete» (2005, April)

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See detailPrédiction numérique des défauts de forme engendrés par l'usinage
Debongnie, Jean-François ULg; Masset, Luc ULg

in Actes du 7ème Congrès de Mécanique. Volume I. Mécanique des Solides (2005, April)

Presentation of a prediction method of form errors arising during machining which has been developed in the manufacturing laboratory of the University of Liège. It combines empirical force models and a ... [more ▼]

Presentation of a prediction method of form errors arising during machining which has been developed in the manufacturing laboratory of the University of Liège. It combines empirical force models and a finite element model of the machined part. A particularly efficient solution scheme has been developed, leading to a valuable tool for the industry. [less ▲]

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See detailSpeciation of particulate trace metals in estuarine sediments of the Scheldt determined by the acidimetric titration approach.
Bouezmarni, Mohamed ULg; El Ghalbzouri, F.; Petit, J. et al

Conference (2005, April)

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See detailEffect of a bovine colostrum supplementation in piglet diet at weaning on growth performances, food ingestion and faecal E. coli concentrations.
Boudry, Christelle ULg; Didderen, Isabelle; Wavreille, José et al

in Proceedings of the British Society of Animal Science (2005, April)

Bovine colostrum supplementation in piglets diet stimulates food intake and reduces the faecal E. coli population during the first week after weaning, inducing a liveweight gain increase. A reduction of ... [more ▼]

Bovine colostrum supplementation in piglets diet stimulates food intake and reduces the faecal E. coli population during the first week after weaning, inducing a liveweight gain increase. A reduction of the food conversion ratio was also observed, suggesting a better nutrient assimilation by the piglets. [less ▲]

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See detailLocal assimilation of sea surface temperature and elevation in a two-way nested model of the Gulf of Lions, using a single multigrid state vector
Vandenbulcke, Luc ULg; Barth, Alexander ULg; Ben Bouallegue, Z. et al

Conference (2005, April)

A three fold nested model is built, covering (a) the Mediterranean Sea (resolution 1/4 degree) (b) its North-Western part (resolution 1/20 degree), and (c) the Gulf of Lions (resolution 1/100 degree). The ... [more ▼]

A three fold nested model is built, covering (a) the Mediterranean Sea (resolution 1/4 degree) (b) its North-Western part (resolution 1/20 degree), and (c) the Gulf of Lions (resolution 1/100 degree). The GHER hydrodynamic model (see e.g. [1]) is used for a simulation of the springs of 1997 and 1998. As the model allows mode splitting, the timestep in each grid is 3 seconds for the barotropic modes, and 3 minutes for the baroclinic modes. ECMWF atmospheric forcings and MODB4/MEDAR climatic data are used. This simulation is run with one-directionnal and bi-directionnal nesting (i.e. without and with statevector feedback), and results are compared. The output of the 1997 and 1998 simulations (3D temperature and salinity fields, and sea surface elevation field) are then used to build 3D multivariate EOFs over the 3 grids alltogether. This guarantees perfect correlations between points from different grids, that are physically at the same location. The following twin experiment is then set up. The simulation from 1998 serves as a control run. A delayed state of this run, serves as initial conditions for the perturbed run. The first 40 EOFs are used to build a reduced-rank model errorspace. Sea surface temperature and sea surface elevation from the reference run, physically located in the Gulf of Lions, are then assimilated in the perturbed run, using a reduced-rank optimal interpolation assimilation scheme. A previous experiment showed non-physical long-range corrections (far outside the Gulf of Lions); these corrections are removed by multiplying the corrections with a radial Gaussian function centered on the corresponding observations. The multivariate statevector ensures corrections are made to temperature, salinity and sea surface elevation fields. Using the corrected fields, the geostrophic equilibrium is used to calculate corrections to the velocity field. In this above twin experiment, observations are assimilated all at once in the 3 grids since a single statevector is used. The results are compared to classic approaches where each grid has a corresponding statevector, and observations are assimilated in a single grid (or in different grids separately). Finally, ongoing research about statistical predictors is presented. Indeed, primitive equation models are too costly to evolve the errorspace in time, even when reducedrank assimilation schemes are used. Statistical methods aim to replace the hydrodynamic model by a much faster method, that would then be used to evolve in time each of the directions of the errorspace, or alternately, the members of an ensemble method. Statistical methods need to be trained on real results; they are thus first tested on the model itself rather than on the errorspace. Preliminary results are presented. [less ▲]

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See detailEffect of various levels of imbalance between energy and nitrogen supplies in the rumen on nitrogen metabolism in growing double-muscled Belgian Blue bulls fed maize silage based diet.
Valkeners, Damien; Beckers, Yves ULg; Amant, Stéphanie et al

in Proceedings of the British Society of Animal Science annual conference2005, York, UK. 4th-6th April, 2005 (2005, April)

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See detailPreliminary results on the biogeochemistry in the Mekong estuary and delta (Vietnam)
Borges, Alberto ULg; Koné; Schiettecatte, L. S. et al

Poster (2005, April)

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See detailMobility prediction's influence on QoS in wireless networks: a study on a call admission algorithm
François, Jean-Marc; Leduc, Guy ULg

(2005, April)

Several mechanisms increase the QoS level of mobile networks thanks to an underlying mobility prediction method (i.e. a means to predict a mobile's next access router). This paper aims at studying how the ... [more ▼]

Several mechanisms increase the QoS level of mobile networks thanks to an underlying mobility prediction method (i.e. a means to predict a mobile's next access router). This paper aims at studying how the accuracy of the prediction method can influence the network QoS in the particular context of call admission control. It shows that (a) the mobiles behaviour must be adapted according to the prediction scheme accuracy in order to achieve good performance and (b) the admission algorithm can be modified to increase its fairness and to give mobiles an incentive to do such an adaptation. [less ▲]

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See detailInvestigation of germinal centres in vivo and in vitro in the context of prion disease
Demonceau, C.; Defaweux, Valérie ULg; Flandroy, S. et al

Poster (2005, April)

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See detailInfluence of the nozzle capacity on the performance of a domestic fuel oil boiler
Ngendakumana, Philippe ULg; Masy, Cédric

in 2nd Edition of European Combustion Meeting (ECM 2005) (2005, April)

In order to investigate the influence of the nozzle capacity on the performance of fuel oil boilers, tests have been performed in transient and steady state regimes on our experimental boiler. The aim of ... [more ▼]

In order to investigate the influence of the nozzle capacity on the performance of fuel oil boilers, tests have been performed in transient and steady state regimes on our experimental boiler. The aim of the tests was to deduce the better couple nozzle - fuel injection pressure to reach the desired output power while producing fewer pollutants as possible. In short, a high fuel injection pressure associated with a low capacity nozzle is recommended. [less ▲]

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See detailThe electronic nose as a warning device of the odour emergence in a compost hall
Nicolas, Jacques ULg; Romain, Anne-Claude ULg; Ledent, C.

in Marco, S.; Montoliu, I. (Eds.) Proceedings of the 11th International Symposium on olfaction and electronic nose (ISOEN 2005) (2005, April)

A self-made electronic nose consisting in a sensor array of six commercial tin oxide gas sensors is used to monitor the odour emission from a compost facility. Supervised data processing tools, such as ... [more ▼]

A self-made electronic nose consisting in a sensor array of six commercial tin oxide gas sensors is used to monitor the odour emission from a compost facility. Supervised data processing tools, such as discriminant analysis, are able to recognize, in real time, the odour of compost with respect to other possible sources in the hall. The paper shows that with unsupervised methods, such as principal component analysis, it is not essential to identify all the possible odour sources during the learning phase. The closeness to the compost group centroid could be used as an indicator of the compost odour level. Alternatively, by a suitable calibration from olfactory measurements, the signals generated by the sensor array can be used to estimate the odour emission rate from the compost hall. Such real time monitoring should allow to assess and to anticipate the annoyance in the surrounding. [less ▲]

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See detailStability and LCO Amplitude Prediction for Aeroelastic Systems with Aerodynamic and Structural Nonlinearities Using Numerical Continuation
Vio, Gareth Arthur; Dimitriadis, Grigorios ULg; Cooper, Jonathan Edward

in RTO-MP-AVT-123 Flow-Induced Unsteady Loads and the Impact on Military Applications (2005, April)

This paper deals with the prediction of stability boundaries and Limit Cycle Oscillation amplitudes for aeroelastic systems with nonlinear unsteady aerodynamic loads and/or nonlinearity in the structure ... [more ▼]

This paper deals with the prediction of stability boundaries and Limit Cycle Oscillation amplitudes for aeroelastic systems with nonlinear unsteady aerodynamic loads and/or nonlinearity in the structure. The Numerical Continuation method is used to accurately predict bifurcation conditions and LCO amplitudes for aeroelastic systems with various types of nonlinearity without the need for extensive CFD calculations. It is shown that it is possible to completely characterise the stability of systems undergoing subcritical and supercritical bifurcations. The method is applied to a pitch-plunge airfoil subjected to transonic aerodynamics and freeplay structural nonlinearity. The results from this analysis are compared to those obtained from full numerical simulation to ensure their accuracy. [less ▲]

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See detailProjective primitives vs. Topological promitives: What’s the benefit ?
Billen, Roland ULg

Conference (2005, April)

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See detailA comparative study of isokinetic training using two brands of dynamometers
Croisier, Jean-Louis ULg; Herve, M. N.; Forthomme, Bénédicte ULg

in Abstract Book of the XIV International Congress on Sports Rehabilitation and Traumatology: «The Accelerated Rehabilitation of the Injured Athlete» (2005, April)

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See detailGauche, droite et engagement public
Italiano, Patrick ULg; Deflandre, Dimitri; Jacquemain, Marc ULg

Conference (2005, April)

The paper examines poll survey data to see if the way people invest in public envolvement is different between thos consider themselves to the left and those who consider themselves to the right. It ... [more ▼]

The paper examines poll survey data to see if the way people invest in public envolvement is different between thos consider themselves to the left and those who consider themselves to the right. It appears that the difference beween rightl and left is small and that the main difference is bewteen those who choose a position and those who refuse to choose or do not answer. Rather interestingly, people that see themselves at the center ressembles strongly to non respondants, as if the center was a "refuge value". [less ▲]

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See detailCriterion-related validity of the revised Belgian Nursing Minimium Data Set (B-NMDS) throught the actual B-NMDS
THONON, Olivier ULg; VAN BOVEN, Caroline ULg; CODOGNOTTO, Jean ULg et al

in OUD, Nico; SERMEUS, Walter; EHNFORS, Margareta (Eds.) Proceedings of the fifth biennial European Conference of the Association for Common European Nursing Diagnoses, Interventions and Outcomes (2005, April)

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See detailPhase transition in granular gases
Terwagne, Denis ULg; Frère, Benjamin; Masabo, Jean-Pierre et al

Conference (2005, April)

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See detailApplication of Lempel-Ziv complexity to alignment-free sequence comparison of protein families
Bacha, Sofiène; Baurain, Denis ULg

Poster (2005, April)

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See detailInfluence de la température du fluide de soufflage sur le bruit de fente
Glesser, Martin; Billon, Alexis ULg; Valeau, Vincent et al

Conference (2005, April)

Les bouches de soufflage des systèmes de ventilation peuvent produire des sifflements de forte intensité. Pour étudier leur mécanisme de production un modèle expérimental où un jet rectangulaire heurte ... [more ▼]

Les bouches de soufflage des systèmes de ventilation peuvent produire des sifflements de forte intensité. Pour étudier leur mécanisme de production un modèle expérimental où un jet rectangulaire heurte une plaque fendue est étudié. Cette configuration donne naissance à un type de sons auto-entretenus connus sous le nom de bruit de fente. [less ▲]

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See detailHétérogénéité, mon cher souci
Lafontaine, Dominique ULg

(2005, April)

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See detailEffect of ruminal degradable nitrogen deficit on nitrogen metabolism in growing double-muscled Belgian Blue bulls fed maize silage based diet.
Valkeners, Damien; Beckers, Yves ULg; Van Laere, Marc et al

in Proceedings of the British Society of Animal Science annual conference2005, York, UK. 4th-6th April, 2005 (2005, April)

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See detailArray of microsystem for live monitoring of high voltage power lines
Renson, Luc ULg; Jamar, Claude ULg; Guérard, Suzanne ULg et al

in Proceedings of the 1st IOMAC (2005, April)

How to use microsystems placed on power lines environment.

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See detaila comparison of control strategies applied to an existing ice-storage system
Lemort, Vincent ULg

(2005, April)

While ice storage systems are designed according to a defined strategy for warm day loads, it is interesting to consider other conventional control strategies for mid-season day loads. These different ... [more ▼]

While ice storage systems are designed according to a defined strategy for warm day loads, it is interesting to consider other conventional control strategies for mid-season day loads. These different control strategies, applied to an existing cooling plant, are compared in terms of operating costs and energy consumption. A simplified cooling plant model is built. The chillers, cooling towers, and the ice storage system are modeled as different systems connected together. A time stage equal to 15 minutes is considered to simulate the different control strategies. Existing technical constraints and set points are met. The operating costs of the cooling plant are evaluated by taking into account both the energy and the demand cost rate. In off-design conditions, savings of operating costs are made only if the storage tanks are fully discharged after being fully charged. In this case, ice storage systems reduce the operating costs of the cooling plant by shifting a significant fraction of on-peak energy consumption to off-peak periods and by reducing the on-peak demand. But at the same time, the introduction of an ice storage system in a cooling plant causes the electrical energy consumption to rise because the thermal efficiency of the chillers is reduced when working in ice formation mode. [less ▲]

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See detailChromosome aberrations and equine fertility.
Durkin, Keith ULg; Raudsepp, T; Chowdhary, B.P.

in Proceedings of the 32nd Annual Meeting of the Texas Genetics Society (2005, April)

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See detailPolygeneration and HVAC
Andre, Philippe ULg; Adam, Ch.; Aparecida Silva, Cl. et al

Conference (2005, April)

Decentralized cogeneration may help in energy conservation if a large enough amount of heat can be actually recovered. This restriction is becoming more and more severe because of the growing ... [more ▼]

Decentralized cogeneration may help in energy conservation if a large enough amount of heat can be actually recovered. This restriction is becoming more and more severe because of the growing effectiveness of modern power plants. Re-conversion of heating into cooling is not competitive with the use of modern vapor compression chillers. It may just help to extend a little the time during which the co-generation plant can be effectively used. A co-generation plant should not be sized above 30% of the maximal heating power in order to stay energy efficient. The results of a long term case study are summarized in the paper. These results show the incidence of the plant over-sizing : in this case, the system is consuming more than a classical solution [less ▲]

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See detailCellular and nervous environment of mouse mesenteric lymph node germinal centres
Wenders, Frédéric ULg; Dorban, G.; Piret, Joëlle ULg et al

Conference (2005, April)

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See detailClonage de l’herpèsvirus alcélaphin 1 sous forme d’un chromosome artificiel bactérien infectieux
Dewals, Benjamin G ULg; Boudry, Christel; Markine-Goriaynoff, Nicolas et al

Poster (2005, April)

L’herpèsvirus alcélaphin 1 (AlHV-1) est un Gammaherpesvirinae du genre Rhadinovirus ayant pour hôte naturel le gnou (Connochaetes taurinus). Apathogène pour son hôte naturel, ce virus induit par ailleurs ... [more ▼]

L’herpèsvirus alcélaphin 1 (AlHV-1) est un Gammaherpesvirinae du genre Rhadinovirus ayant pour hôte naturel le gnou (Connochaetes taurinus). Apathogène pour son hôte naturel, ce virus induit par ailleurs une pathologie mortelle lorsqu’il est transmis à un grand nombre d’espèces de ruminants sensibles. Cette pathologie, appelée forme africaine du coryza gangreneux (FACG) est associée à une lymphoprolifération et une destruction des tissus de l’hôte infecté. Pour étudier le rôle de l’AlHV-1 dans la pathogenèse de la FACG, il est nécessaire de pouvoir manipuler le génome viral afin de générer des virus recombinants et révertants pour certains gènes. A ce jour, aucune souche d’AlHV-1 recombinante n’a pu être produite. Cette carence résulte du fait que ce virus est strictement associé aux cellules et qu’il possède la caractéristique de s’atténuer spontanément lors de sa multiplication in vitro. De ce fait, la réalisation de virus mutants se révèle impossible par une approche classique de recombinaison homologue en cellules eucaryotes. Récemment, le développement des technologies de chromosome artificiel bactérien (BAC) a permis de cloner le génome entier de plusieurs gammaherpèsvirus de manière stable en bactérie ainsi que la production rapide de nombreuses souches recombinantes. Dans la présente étude, nous avons cloné le génome entier de la souche C500 de l’AlHV-1 sous forme d’un BAC appelé ci-après BAC-AlHV-1. Les résultats obtenus peuvent se résumer comme suit : (i) le BAC-AlHV-1 permet une propagation stable du génome de l’AlHV-1 en bactérie ; (ii) la transfection du BAC-AlHV-1 en cellules eucaryotes permet de régénérer des particules virales infectieuses ; (iii) la cassette BAC insérée initialement dans le génome de l’AlHV-1 étant flanquée de séquences loxP, la multiplication des virions générés à partir du BAC-AlHV-1 en cellules EBL-Cre (embryonic bovine lung ; exprimant la Cre recombinase) permet l’excision de la cassette BAC ; (iv) enfin, la capacité des virions générés à partir du BAC à induire la FACG en modèle lapin a été démontrée. En conclusion, le clone BAC-AlHV-1 généré dans cette étude va enfin permettre l’étude des rôles des différents gènes de l’AlHV-1 dans la genèse de la FACG. [less ▲]

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See detailThe reconstruction of an Atlantic salmon population in the Belgian River Meuse basin. First success and new threats.
Philippart, Jean-Claude ULg; Ovidio, Michaël ULg; Frank, Vincent et al

Conference (2005, April)

A 'Meuse Salmon' project aiming at restoring an Atlantic salmon run in the River Meuse basin was put forward in 1983 (after the discovery of several 'sea trout' in the Meuse near Liège) and started ... [more ▼]

A 'Meuse Salmon' project aiming at restoring an Atlantic salmon run in the River Meuse basin was put forward in 1983 (after the discovery of several 'sea trout' in the Meuse near Liège) and started officially in 1987 as a contribution of Wallonia to the European Year of Environment. In the course of this programme, most dams (3-8 m in height) obstructing the canalised River Meuse in Belgium and The Netherlands have been fitted with modern fish-ways in order to restore the free circulation of diadromous fish species. A second facet of the Salmon Meuse programme consisted in restocking salmonid streams in the Belgian Ardennes with hatchery reared salmon parr and smolt (maximum 200.000 fish per year) from foreign origins (Scotland, Ireland and France). Returning adult salmon have been scientifically recorded in the Meuse in The Netherlands (estuary and lower course) since 1994 but only since the year 2002 in Belgium: 13 (61-79 cm FL) fish in 2002 and 2 (71-76 cm FL) fish in 2003 caught mostly (13 fish) in a new big fish-pass at the Visé-Lixhe dam and (2 fish) in the River Berwinne, a small tributary of the Meuse known as the last spawning place for S. salar in Belgium in the 1920's. Female and male returning salmon in 2002 were successfully artificially reproduced in order to build a captive freshwater brood stock to be used for production of parrs and smolts of the new Meuse strain next autumn. The communication briefly reports on the progress of the program as concerns the salmon culture for stocking in Wallonia, the population dynamics of stocked parrs in nursery rivers, the patterns of upstream and downstream migration of salmon in the Belgian Meuse and its tributaries and the new challenges to meet (impact on salmon of rising water temperature, development of power generation, increasing predation on smolts by piscivorous birds). [less ▲]

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See detailApprentissage d’associations noms-visages dans la DTA en début d’évolution : comparaison de méthodes d’apprentissage
Bier, Nathalie; Gagnon, Lise; Van der Linden, Martial et al

Poster (2005, March 30)

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See detailLe syndrome métabolique et le traitement antihypertenseur
Krzesinski, Jean-Marie ULg

Conference (2005, March 25)

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See detailEvaluation de la dynamique des réseaux : quelques pistes
Vandoorne, Chantal ULg; Absil, Gaëtan ULg

Conference (2005, March 24)

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See detailThe Missing Chapter in Janet Frame's 'Living in the Maniototo'
Delrez, Marc ULg

Conference (2005, March 23)

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See detailRVA : a tool to determine the intrinsic pasting properties of starch in groung wheat, flour and native starch.
Sinnaeve, Georges; Lenartz, Jonathan; Massaux, Carine et al

Conference (2005, March 23)

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See detailPerception of vocal and facial cues of four primary emotions tsadness, hapiness, anger, fear) in a patient affectied by Steinert disease and in a professional actor. Matching of vocal and visual signals
Morsomme, Dominique ULg; Verduyckt, Ingrid

Conference (2005, March 12)

Aims: This single-case study assess the emotional expression in a patient affected with Steinert disease in order to better analyze the patient's therapeutical needs as well as widen our perspective on ... [more ▼]

Aims: This single-case study assess the emotional expression in a patient affected with Steinert disease in order to better analyze the patient's therapeutical needs as well as widen our perspective on the therapeutical means in speech therapy. Methods: A neutral text was read by the patient and a comedian, with five different emotions (joy, anger, fear, sadness and neutral). A group of judges identified the emotions by categorical choice and graded their intensity on a 4-point scale. The samples included three modes: visual, audio and audio-visual. Results: Compared to the comedian, the patient’s expression of emotion is less well perceived in the visual mode (65%>51%, (p=0.009)). In the gradation of intensity, there is a better correlation for the comedian (0.583>0.325, p<0.001) than for the patient. Conclusion: The results suggests that the emotions expressed by the patient are less well identified, especially through the visual channel, which confirms the influence of the patient’s disease on the quality of his emotional expressions. In addition, the fact that the patient's expressions are less well transmitted through the facial channel leads the author to consider a therapy focused not only on vocal capacities but also on facial mimicry. [less ▲]

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See detailLes grandes lignes de l'interprétation heideggérienne de la monadologie
Pieron, Julien ULg

Conference (2005, March 10)

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See detailAnwendung der neuen Auslegungsmethode für Extraktionskolonnen auf ein technisches Beispiel
Weber, M; Bäcker, W; Grömping, T et al

Conference (2005, March 10)

See detailFormulation solide de la lipase de Yarrowia lipolytica
Alloue, M.; Destain, Jacqueline ULg; Thonart, Philippe ULg

Poster (2005, March 05)

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See detailMémoire verbale à court terme et langage.
Majerus, Steve ULg

Conference (2005, March 04)

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See detailNatural and human-induced variability in the stoichiometry of benthic organisms in rivers
Darchambeau, François ULg; Campeau, Stéphane; Cabana, Gilbert

Poster (2005, March 03)

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See detailPhotospheric abundance peculiarities in chromospherically active stars
Morel, Thierry ULg; Micela, G.; Favata, F.

in 13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun (2005, March 01)

Not Available

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See detailVertebral and non-vertebral anti-fracture efficacy of strontium ranelate in very elderly women with osteoporosis
Seeman, E.; Vellas, B.; Meunier, Pierre J et al

in Osteoporosis International (2005, March), 16(Suppl.3), 6

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See detailVitamin D inadequacy: global prevalence and skeletal implications
Reginster, Jean-Yves ULg; Richy, Florent; Rabenda, Véronique ULg et al

in Osteoporosis International (2005, March), 16(Suppl.3), 64

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See detailFatal outcome of herpes simplex virus superinfection of Darier disease
Nikkels, Arjen ULg; Quatresooz, Pascale ULg; Pierard, Gérald ULg

in Journal of the American Academy of Dermatology (2005, March), 52(3, Suppl. S), 132

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See detailOsteoporosis: a still increasing prevalence
Reginster, Jean-Yves ULg

in Osteoporosis International (2005, March), 16(Suppl.3), 119

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See detailPhysical functionning is the most severely affected health-related quality of life dimension during the aging process
Ethgen, Olivier ULg; Gosset, Christiane ULg; De Maeseneer, J. et al

in Osteoporosis International (2005, March), 16(Suppl.3), 25-26

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See detailA critical analysis of the efficacy of estrogens on spinal and non-spinal fracture reduction
Reginster, Jean-Yves ULg; Richy, Florent; Bruyère, Olivier ULg

in Osteoporosis International (2005, March), 16(Suppl.3), 47

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See detailIntermittent intravenous ibandronate injections and daily oral ibandronate provide at least equivalent increases in bone mineral density: 1-year results from DIVA
Delmas, P. D.; Sambrook, P.; Recker, R. et al

in Osteoporosis International (2005, March), 16(Suppl.3), 7

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See detailImpact des essences sur la fertilité des sols forestiers
Carnol, Monique ULg; Degrave, Frédéric; Weissen, Frantz

Conference (2005, March)

Depuis plusieurs siècles, l’écosystème forestier subit d’importantes pressions, engendrées p.ex. par la pollution atmosphérique, des modifications climatiques, des attaques de pathogènes et/ou des ... [more ▼]

Depuis plusieurs siècles, l’écosystème forestier subit d’importantes pressions, engendrées p.ex. par la pollution atmosphérique, des modifications climatiques, des attaques de pathogènes et/ou des exploitations intensives. Une prise de conscience au niveau international a mené à l’intégration du concept de développement durable dans les politiques conduites au niveau du secteur forestier, visant au maintien, à long terme, de la capacité de la forêt d’assurer son rôle économique (productivité), écologique (état sanitaire, biodiversité) et social (loisirs). Ainsi, la liste des ‘Indicateurs Paneuropéens améliorés pour une Gestion Forestière durable’ (Experts de la Conférence Ministérielle sur la Protection des Forêts en Europe, Vienne, octobre 2002), comprend les points suivants : ‘Maintien de la santé et de la vitalité des écosystèmes forestiers’, ‘Maintien, conservation et amélioration approprié de la diversité biologique dans les écosystèmes forestiers’ et ‘Maintien et amélioration approprié des fonctions de la protection dans la gestion des forêts – notamment sol et eau’. En particulier, le maintien de la qualité du sol est indispensable afin d’assurer son rôle de filtre, de zone tampon, de minéralisation de la matière organique pour la nutrition végétale et de protection des eaux de surface et des nappes. En Région wallonne, de nombreux sols forestiers se caractérisent par un pH trop faible, associé à une carence en calcium et surtout en magnésium. Cette pauvreté des sols, combinée à la pollution atmosphérique acide et azotée, a été mise en cause dans le cadre du dépérissement du hêtre et de l’épicéa en Ardenne. Parmi les remèdes, l’amendement calcaro-magnésien est efficace, mais la durabilité et le coût de l’intervention ne paraissent pas satisfaisants. Ainsi, le mélange d’essences principales et/ou secondaires a été proposé pour stabiliser les écosystèmes le plus fragiles. Outre l’impact sur la biodiversité, les essences jouent un rôle essentiel dans le fonctionnement de l’écosystème. Ainsi, l’impact des essences sur le cycle des éléments nutritifs se manifeste principalement à trois niveaux : (1) l’interception des polluants, (2) la composition et la décomposition des litières et (3) le lessivage des éléments minéraux. Ces impacts, ainsi que certains mécanismes sous-jacents, seront discutés au travers de plusieurs études menées en Région wallonne. Les résultats montrent notamment une plus grande interception des dépôts acides et potentiellement acidifiants sous épicéa, comparé au hêtre et au chêne. La composition foliaire des essences indique l’intérêt des essences secondaires, plus riches en bases, pour la stabilisation sanitaire de la forêt. Des différences dans le contenu en éléments minéraux des essences, croissant sur un même site, s’expliqueraient par des différences dans les mécanismes d’assimilation (production d’enzymes spécifiques à l’espèce), la production de substances solubilisant les minéraux, la production de protons favorisant les réactions d’échange et la profondeur d’enracinement. De même, l’essence forestière conditionne la composition minérale moyenne des litières, la vitesse de décomposition et la quantité des éléments nutritifs restitués lors de ce processus. Par exemple, comparées aux autres essences, les feuilles du sorbier des oiseleurs se décomposent rapidement avec une restitution importante de Ca et de Mg. Des premières mesures de lessivage d’éléments minéraux sous trois essences principales montrent une perte de nitrates importante sous pessière, comparée à une hêtraie et à une chênaie. Cette perte de nitrates entraîne le lessivage de cations et l’acidification des sols. Une analyse plus détaillée des résultats existants, ainsi que des recherches complémentaires permettront, à terme, l’utilisation d’un choix raisonné d’essences en mélange pour une stabilisation des sols pauvres. [less ▲]

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See detailResponders to glucosamine sulfate in knee osteoarthritis
Bruyère, Olivier ULg; Pavelka, K.; Richy, Florent et al

in Osteoporosis International (2005, March), 16(Suppl.3), 77

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See detailShort-term daily administration of 1500 mg glucosamine contributes to symptomatic improvement of osteoarthritis
Reginster, Jean-Yves ULg; Imschoot, J.; Ghys, A.

in Osteoporosis International (2005, March), 16(Suppl.3), 33

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See detailEstimation of direct unit costs associated with non-vertebral osteoporotic fractures in six European countries
Bouée, S.; Lafuma, A.; Fagnani, F. et al

in Osteoporosis International (2005, March), 16(Suppl.3), 13

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See detailThe activity of R126638, a new triazole antifungal, as assessed by corneofungimetry
Ausma, J.; Pierard-Franchimont, Claudine ULg; Borgers, M. et al

in Journal of the American Academy of Dermatology (2005, March), 52(3, Suppl. S), 129

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See detailCross-sectional assessment of risk factors associated with breast cancer among French postmenopausal women being prescribed an antiosteoporotic treatment
Tancredi, Annalisa ULg; Bosio-Le Goux, B.; Augendre-Ferrante, B. et al

in Osteoporosis International (2005, March), 16(Suppl.3), 108

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See detailBody composition, bone mineral density and Baecke physical activity scores in women aged 25 to 49 years
Gourlay, M. L.; Richy, Florent; Garrett, J. M. et al

in Osteoporosis International (2005, March), 16(Suppl.3), 106

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See detailAge- and sex-stratified prevalence of physical disabilities and handicap in the general population
Ethgen, Olivier ULg; GILLAIN, Daniel ULg; Gillet, Pierre ULg et al

in Osteoporosis International (2005, March), 16(Suppl.3), 25

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