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See detailPALETTE : User centred description of PALETTE tools and services and first analysis of usability
Vandeput, Etienne ULg; Denis, Brigitte ULg; Ledent, M. et al

Report (2007)

The present deliverable aims at providing any CoP member, CoP animator or CoP mediator with the most complete view of the PALETTE tools and services. It gives a voice to the developer, the educationalist ... [more ▼]

The present deliverable aims at providing any CoP member, CoP animator or CoP mediator with the most complete view of the PALETTE tools and services. It gives a voice to the developer, the educationalist, the ergonomist and of course the user to explain how they consider them. So, it suggests use cases, scenarios but also shows to the reader where are the obstacles of use (with the aim of avoiding a too quick discouragement on his/her part) and it provides real users’ testimonies. It illustrates the participative design, core of the project, by showing how various kinds of partners in the project work at their evolvement. Several times, it evokes how they interact in that way. More, for the sake of completeness, external services which are "social network" oriented, are described in terms of functionalities and with the concern of providing the audience with a largest view of how ICT may help CoPs to grow up. [less ▲]

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See detailPALETTE: Analysis of Instrumental Genesis lived by the CoPs
Daele, Amaury; Charlier, Bernadette; Ciussi, Mélanie et al

Report (2009)

The research presented in this deliverable aimed at observing and analysing the use of PALETTE services in authentic CoP contexts. We first present our conceptual framework based on the instrumental ... [more ▼]

The research presented in this deliverable aimed at observing and analysing the use of PALETTE services in authentic CoP contexts. We first present our conceptual framework based on the instrumental genesis theory. We then present our methodology for the generation of data and the analysis. Seven cases of design in use of PALETTE services and scenarios by CoPs are then described and analysed. In the discussion section, we carry out a cross-case analysis aiming at highlighting the common conditions of use of the services through the seven analysed cases. This discussion provides reflection that may inform the use of PALETTE services by other CoPs in other contexts. Finally, in the conclusion, we reflect on our methodological approach and results, and provide guidelines for further research. [less ▲]

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See detailPALETTE: Grid of Analysis Supporting the Participative Design Methodology
Pironet, Fabienne ULg; Charlier, Bernadette; Daele, Amaury et al

Report (2006)

This deliverable presents the participatory design methodology of the PALETTE project and some first results of the implementation of this process. Some principles of the Actor Network Theory and of the ... [more ▼]

This deliverable presents the participatory design methodology of the PALETTE project and some first results of the implementation of this process. Some principles of the Actor Network Theory and of the Agile Methodology are embedded in the different stages of this methodology whose twelve stages (described in details in the last section) will be the basis of the participative development of services and scenarios of use. The first two stages of the process, establishing the collaboration with the CoPs and modelling their activities, have been implemented. Concrete results are available, i.e. procedures implemented to enrol the partners, methodological tools to gather and analyse the data from the CoPs. Some information has been communicated to partners of WPs 2, 3, 4 and 5 that needed it to progress in the development of their work. This process is not ended; it is iterative and will be refined all along the project. [less ▲]

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See detailPALETTE: Learning and Organisational Resources: Conceptual Instruments for Self- Analysis, Learning and Developments of CoPs
Ashwin, Paul; Daele, Amaury; Barlatier, Pierre-Jean et al

Report (2009)

The purpose of this deliverable is to present the researches that have been led for modelling learning and activities in CoPs. On the basis of these models, we developed Learning and Organisational ... [more ▼]

The purpose of this deliverable is to present the researches that have been led for modelling learning and activities in CoPs. On the basis of these models, we developed Learning and Organisational Resources (LORs) that are short activity scenarios aiming at developing learning, collaboration and uses of technological services in CoPs. The LORs are especially focused on the Generic Scenarios developed by WP5 and presented in D.IMP.08 i.e. ‘Reification’, ‘Debate & Decide’, and ‘Identity building’. The LORs have been trialled and evaluated by CoPs. In the conclusions, we synthesize the evaluation accounts from the CoPs and we provide advices for the use of the LORs by CoPs from various domains and contexts. [less ▲]

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See detailPALETTE: Online pedagogical catalogue of tools and services
Denis, Brigitte ULg; Vandeput, Etienne ULg

Report (2009)

This deliverable presents services and tools developed during the PALETTE project. Online descriptions, video teasers and printable documents are available from a “Service Gallery”. The teasers provide ... [more ▼]

This deliverable presents services and tools developed during the PALETTE project. Online descriptions, video teasers and printable documents are available from a “Service Gallery”. The teasers provide information from different points of views: a problem evoked by a CoP member, the answer provided by the developer and a supplementary account by a CoP mediator or an educationist. A series of printable documents give information on the services from the developer’s and a learning specialist’s points of views. The interface of the Service Gallery also provides a link to the PALETTE portal. A short survey helps the potential users to choose which service start to explore. A link to the Learning and Organisational Resources and another one to examples of generic scenarios illustrate some potential uses of the tools and services in order to sustain CoP’s activities. From the end of the PALETTE project (February 2009), these resources will be available from a website hosted at the CRP. [less ▲]

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See detailPALETTE: Second analysis of usability
Vandeput, Etienne ULg; Denis, Brigitte ULg; Roisin, Cécile et al

Report (2006)

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See detailPALETTE: User Centred Description of PALETTE tools and services and first analysis of usability
Vandeput, Etienne ULg; Denis, Brigitte ULg; Ledent, Maryse ULg et al

Report (2006)

The present deliverable aims at providing any CoP member, CoP animator or CoP mediator with the most complete view of the PALETTE tools and services. It gives a voice to the developer, the educationalist ... [more ▼]

The present deliverable aims at providing any CoP member, CoP animator or CoP mediator with the most complete view of the PALETTE tools and services. It gives a voice to the developer, the educationalist, the ergonomist and of course the user to explain how they consider them. So, it suggests use cases, scenarios but also shows to the reader where are the obstacles of use (with the aim of avoiding a too quick discouragement on his/her part) and it provides real users’ testimonies. It illustrates the participative design, core of the project, by showing how various kinds of partners in the project work at their evolvement. Several times, it evokes how they interact in that way. More, for the sake of completeness, external services which are "social network" oriented, are described in terms of functionalities and with the concern of providing the audience with a largest view of how ICT may help CoPs to grow up. [less ▲]

Detailed reference viewed: 28 (0 ULg)
See detailPALETTTE : Knowledge Management Services for CoPs : Final Report
Giboin, Alain; El Ghali, Adil; Barlatier, Pierre-Jean et al

Report (2009)

Detailed reference viewed: 53 (9 ULg)
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See detailPalicoside: précurseur naturel de l'akagérine
Brandt, Viviane; Tits, Monique ULg; Penelle, Jacques et al

Poster (2000, July)

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See detailLe Palimpseste noir. Notes sur l’impétigo, la terreur et le cinéma américain contemporain
Tomasovic, Dick ULg

Book published by Yellow Now (2002)

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See detailPalladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene - I. Synthesis and characterization
Heinrichs, Benoît ULg; Delhez, Patrice; Schoebrechts, Jean-Paul et al

in Journal of Catalysis (1997), 172(2), 322-335

Low-density xerogel Pd-Ag/SiO2 catalysts were prepared by a cogelation of tetraethoxysilane with organically substituted alkoxides capable of forming chelates with palladium and silver ions, followed by a ... [more ▼]

Low-density xerogel Pd-Ag/SiO2 catalysts were prepared by a cogelation of tetraethoxysilane with organically substituted alkoxides capable of forming chelates with palladium and silver ions, followed by a drying under vacuum, a calcination, and a reduction. The resulting Pd-Ag alloy particles have diameters of about 2-3 nm and are dispersed inside the silica particles which exhibit a monodisperse micropore size distribution centered at 0.8 nm. At low silver loading, the composition of the bimetallic particles is almost identical to the overall composition, but when this loading is increased, the percentage of silver in the alloy particles is appreciably lower than the overall percentage, In all bimetallic samples, a few large pure silver particles are observed. When dried under vacuum, the xerogels exhibit a texture similar to that of aerogels dried under supercritical conditions with pore volumes in the range 2-6 cm(3)/g and pores ranging from micro- to macropores of several hundred nanometers. When the silver loading is increased, xerogels containing palladium show aggregates of increasingly interpenetrated silica particles. This is explained bq an aggregation, during the gelation reaction, of colliding SiO2 particles which is limited by an increasingly slow sticking reaction due to the growing basicity in the precursor solution when the concentrations of Ag and associated compounds are increased. During thermal treatments, the Pd-Ag alloy seems to form by the migration, through the porous network, of silver which finally alloys with Pd crystallites trapped inside SiO2 particles. Whereas ethane is the main product when hydrodechlorination of 1,2-dichloroethane is performed over pure palladium, the dilution of this active metal by silver leads to a strong increase in ethylene selectivity. (C) 1997 Academic Press. [less ▲]

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See detailPalladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene - IV. Deactivation mechanism and regeneration
Heinrichs, Benoît ULg; Noville, Francis ULg; Schoebrechts, Jean-Paul ULg et al

in Journal of Catalysis (2003), 220(1), 215-225

The activity and selectivity of a 1.9% Pd-3.7% Ag/SiO2 catalyst during selective hydrodechlorination of 1,2-dichloroethane into ethylene have been followed in the course of time. The deactivation curves ... [more ▼]

The activity and selectivity of a 1.9% Pd-3.7% Ag/SiO2 catalyst during selective hydrodechlorination of 1,2-dichloroethane into ethylene have been followed in the course of time. The deactivation curves show two distinct periods: an initial period at the very beginning of catalyst operation, that is, during the first 20 operating hours, characterized by a sharp decrease of the rates of both reactions involved in the process (1,2-dichloroethane hydrodechlorination and undesired ethylene hydrogenation) and a second period, after the first 20 operating hours and investigated for more than 600 h, characterized by a clearly slower deactivation. During the initial period, the hydrodechlorination rate decreases less quickly than the hydrogenation rate and this results in a fast increase of ethylene selectivity which reaches a maximum at the end of this period. After the initial period, the hydrodechlorination rate decreases faster than the hydrogenation rate and this results in a slow decrease of ethylene selectivity. A comparison between the physico-chemical properties of the fresh catalyst and of the deactivated one suggests a deactivation mechanism by poisoning or coking of silver sites at the surface of the active Pd-Ag alloy particles whereas palladium sites would remain intact. The selectivity evolution during the second period, that is, after the very first operating hours, is in agreement with such a mechanism. However, the sharp ethylene selectivity increase during the initial operating hours suggests, in addition to the deactivation by silver sites disappearance, the presence of a further nonidentified phenomenon. The characterization of the catalyst after a regeneration treatment including an oxidation step followed by a reduction step shows that this treatment allows restoration near to the physico-chemical properties of the fresh catalyst. (C) 2003 Elsevier Inc. All rights reserved. [less ▲]

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See detailPalladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene II. Surface composition of alloy particles
Heinrichs, Benoît ULg; Noville, Francis ULg; Schoebrechts, Jean-Paul et al

in Journal of Catalysis (2000), 192(1), 108-118

The surface composition of alloy particles in Pd-Ag/SiO2 hydrodechlorination (HDC) sol-gel catalysts has been determined by combining three experimental techniques, carbon monoxide chemisorption, X-ray ... [more ▼]

The surface composition of alloy particles in Pd-Ag/SiO2 hydrodechlorination (HDC) sol-gel catalysts has been determined by combining three experimental techniques, carbon monoxide chemisorption, X-ray diffraction, and transmission electron microscopy, Values obtained through this method show a very marked silver enrichment of the surface, as expected: as a consequence of the important gap between palladium and silver surface energies. These values are in complete agreement with surface composition curves calculated in other studies by means of Auger electron spectroscopy and infrared spectroscopy. The influence of sample pretreatment temperature as well as the influence of carbon monoxide on surface composition are discussed. (C) 2000 Academic Press. [less ▲]

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See detailPalladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene III. Kinetics and reaction mechanism
Heinrichs, Benoît ULg; Schoebrechts, Jean-Paul; Pirard, Jean-Paul ULg

in Journal of Catalysis (2001), 200(2), 309-320

The kinetics of selective hydrodechlorination of 1,2-dichloro-ethane into ethylene over a Pd-Ag/SiO2 catalyst is studied. Kinetic data at 573, 596, and 647 K have been obtained by means of experimental ... [more ▼]

The kinetics of selective hydrodechlorination of 1,2-dichloro-ethane into ethylene over a Pd-Ag/SiO2 catalyst is studied. Kinetic data at 573, 596, and 647 K have been obtained by means of experimental designs in the space of the partial pressures of the four components influencing kinetics, that is, 1,2-dichloroethane, hydrogen, ethylene, and hydrogen chloride. One model among the numerous ones examined allows us to represent correctly the experimental data. Ii: corresponds to the following mechanism: dechlorination of 1,2-dichloroethane into ethylene occurs on silver through dissociative adsorption with successive breaking of the two C-Cl bonds and desorption of C2H4. Thanks to its activation power of hydrogen by dissociative chemisorption, palladium present at the surface of the alloy supplies hydrogen atoms for regeneration of the chlorinated silver surface into metallic silver. The presence of hydrogen adsorbed on Pd also causes the undesired ethylene hydrogenation leading to a loss of olefin selectivity. (C) 2001 Academic Press. [less ▲]

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See detailPalliative sedation: Why we should be more concerned about the risks that patients experience an uncomfortable death
Deschepper, R; Laureys, Steven ULg; Hachimi-Idrissi, S et al

in Pain (2013), Vol 154

[No abstract available]

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See detailLe palmarès des communes n'est pas un classement tangible
Dubois, Olivier; Jurion, Bernard ULg; Husson, Jean-François ULg

Article for general public (2006)

This paper discusses some ranking of Belgian municipalities produced by some researchers.

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See detailThe Palmomental Reflex in Parkinson's Disease. Comparisons with Normal Subjects and Clinical Relevance
Maertens De Noordhout, Alain ULg; Delwaide, Paul ULg

in Archives of Neurology (1988), 45(4), 425-7

We tested 356 normal subjects and 109 parkinsonian patients for the palmomental reflex. The total incidence of the reflex was 16.3% in normal subjects, increasing with age. In parkinsonian patients, the ... [more ▼]

We tested 356 normal subjects and 109 parkinsonian patients for the palmomental reflex. The total incidence of the reflex was 16.3% in normal subjects, increasing with age. In parkinsonian patients, the overall incidence of the reflex was 71.5%, without clear effect of age. A positive correlation was found between degree of akinesia and incidence as well as intensity of the reflex. In the dyskinetic patients, the reflex was seldom elicited, and, if so, it was small. Modifications of the characteristics of the response could be disclosed in parallel with variations of the patient's clinical status. These findings suggest that the presence of a palmomental reflex in parkinsonian patients could indirectly reflect the decrease of dopaminergic activity in the nigrostriatal pathways. [less ▲]

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See detailPalynological age for the lower part of the Hangenberg Shales in Sauerland, Germany
Higgs, K; Streel, Maurice ULg

in Annales de la Société Géologique de Belgique (1993), 116(Z), 243-247

Detailed reference viewed: 11 (1 ULg)