References of "2012"
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See detailOpening Participation through Participatory Technology Assessment: The Case of Nanotechnologies for Tomorrow's Society
Van Oudheusden, Michiel ULg

Doctoral thesis (2012)

This dissertation examines how participants in a Flemish participatory technology assessment (pTA) on nanotechnologies defined and negotiated the meaning of participation in (nano)science and technology ... [more ▼]

This dissertation examines how participants in a Flemish participatory technology assessment (pTA) on nanotechnologies defined and negotiated the meaning of participation in (nano)science and technology in the course of their engagements. It focuses explicitly on the initiating role that social scientists played in the project and how they performed participation. The dissertation proposes a critical reappraisal of the way in which participation in pTA is planned and implemented, which is explicitly political in character. [less ▲]

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See detailDéveloppement d'un photocatalyseur à base d'oxyde de titane pour l'élimination de polluants et de bactéries en milieu aqueux
Tasseroul, Ludivine ULg

Doctoral thesis (2012)

Dans le cadre de la réutilisation des eaux usées et de l’accès limité à l’eau potable dans certaines régions du globe, de nouvelles techniques d’épuration nécessitant de faibles consommations d’énergie ... [more ▼]

Dans le cadre de la réutilisation des eaux usées et de l’accès limité à l’eau potable dans certaines régions du globe, de nouvelles techniques d’épuration nécessitant de faibles consommations d’énergie sont étudiées. Parmi ces nouvelles techniques, la photocatalyse hétérogène utilise des réactions d’oxydation et de réduction pour la dégradation de polluants organiques et de micro-organismes. Le photocatalyseur le plus employé est le TiO2. Lorsqu’il est illuminé par un rayonnement UV, des paires électron/trou sont générées et réagissent avec l’eau et l’oxygène pour former des radicaux libres qui vont dégrader les polluants. Le procédé sol-gel permet de contrôler facilement la texture, la cristallinité, l’introduction de dopants et la mise en forme de matériaux. Il a été utilisé dans ce travail pour la synthèse de photocatalyseurs à base de TiO2, (xérogels). À partir de sols en cours de gélification, des films de TiO2 ont été déposés par spin-coating. Après calcination, ces films sont actifs pour la dégradation du bleu de méthylène sous UV-A. Afin d’améliorer l’activité photocatalytique de xérogels de TiO2, des particules d’argent ont été introduites dans la matrice par cogélification. Ces particules d’argent améliorent l’activité du TiO2 pour la dégradation du bleu de méthylène sous UV-A. En plus de l’amélioration de l’activité photocatalytique, l’extension de l’activation du TiO2 au domaine visible du spectre solaire a été étudiée par sensibilisation avec des porphyrines. Ces porphyrines sont introduites d’une part, par greffage sur le catalyseur Degussa P25 et d’autre part, in situ dans la matrice de xérogels de TiO2. Le greffage des porphyrines ne permet pas l’activation du catalyseur Degussa P25 sous lumière halogène. Par contre, l’introduction in situ des porphyrines permet l’activation du TiO2 avec des longueurs d’onde du domaine visible et améliore ainsi l’activité des xérogels sous lumière halogène pour la dégradation du p-nitrophénol. L’activité antibactérienne de plusieurs catalyseurs préparés au cours de la thèse a également été évaluée pour la dégradation de deux espèces de bactéries : Escherichia coli et Lactobacillus rhamnosus. Cette activité antibactérienne est corrélée à l’activité dépolluante des photocatalyseurs. L’étude cinétique de la dégradation du p-nitrophénol sur un xérogel de TiO2 dopé in situ avec une porphyrine a été réalisée. Cette étude montre que la dégradation implique un type de site actif correspondant aux trous h+ créés lorsque le TiO2 est exposé à la lumière. L’étape limitante correspond à la réaction de surface entre le p-nitrophénol adsorbé et les radicaux OH• adsorbés. Cette étude cinétique utilise une loi sigmoïdale plutôt que linéaire pour modéliser les courbes de dégradation du p-nitrophénol. [less ▲]

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See detailInvestigation of mechanochemical processes by single-molecule AFM
Willet, Nicolas ULg

Scientific conference (2012, March 23)

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See detailHealth claims for nutriceuticals products in the field of cartilage and joint
Bruyère, Olivier ULg

Conference (2012, March 23)

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See detailLes TICe, quelle plus-value pour l’apprentissage ?
Georges, François ULg

Conference (2012, March 23)

Les cours en ligne sont-ils efficaces ? Dans l'affirmative, dans quelles conditions ? Dans cette allocution, nous présentons l'état de la recherche sur l'efficacité des cours en ligne. Nous passons en ... [more ▼]

Les cours en ligne sont-ils efficaces ? Dans l'affirmative, dans quelles conditions ? Dans cette allocution, nous présentons l'état de la recherche sur l'efficacité des cours en ligne. Nous passons en revue les facteurs propices à l'apprentissage en ligne et les illustrons à travers des cours développés notamment à l'Université de Liège. Nous terminons notre exposé par une brève ouverture sur le monde du "mobile Learning" et tentons d'en présenter les plus-values par la présentation d'applications susceptibles de soutenir l'apprentissage. [less ▲]

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See detailEtude sur les activités des provinces wallonnes
Behrendt, Christian ULg

Report (2012)

L'étude se propose de réaliser une photographie aussi précise que possible de l'activité des cinq provinces wallonnes, tant au point de vue des compétences exercées et de leur importance financière, qu'au ... [more ▼]

L'étude se propose de réaliser une photographie aussi précise que possible de l'activité des cinq provinces wallonnes, tant au point de vue des compétences exercées et de leur importance financière, qu'au point de vue du nombre de personnels impliqués. Elle expose par ailleurs le cadre constitutionnel et légal de l'institution provinciale et dresse un portrait succinct de ses possibilités d'évolution à l'avenir. [less ▲]

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See detailConsistent model for \pi N transition distribution amplitudes and backward pion electroproduction
Lansberg, Jean-Philippe ULg; Pire, Bernard; Semenov-Tian-Chanski, Kirill ULg et al

in Physical Review. D : Particles and Fields (2012), 85

The extension of the concept of generalized parton distributions leads to the introduction of baryon to meson transition distribution amplitudes (TDAs), nondiagonal matrix elements of the nonlocal three ... [more ▼]

The extension of the concept of generalized parton distributions leads to the introduction of baryon to meson transition distribution amplitudes (TDAs), nondiagonal matrix elements of the nonlocal three quark operator between a nucleon and a meson state. We present a general framework for modeling nucleon to pion (\pi N) TDAs. Our main tool is the spectral representation for \pi N TDAs in terms of quadruple distributions. We propose a factorized Ansatz for quadruple distributions with input from the soft-pion theorem for \pi N TDAs. The spectral representation is complemented with a D-term like contribution from the nucleon exchange in the cross channel. We then study backward pion electroproduction in the QCD collinear factorization approach in which the nonperturbative part of the amplitude involves N TDAs. Within our two component model for N TDAs, we update previous leading-twist estimates of the unpolarized cross section. Finally, we compute the transverse target single spin asymmetry as a function of skewness. We find it to be sizable in the valence region and sensitive to the phenomenological input of our \pi N TDA model. [less ▲]

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See detailLes parlementaires québecois et wallons
Dodeigne, Jérémy ULg

Conference (2012, March 23)

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See detailA Quick Look into the past, present and future of competition Enforcement in the Pharmaceutical Sector
Petit, Nicolas ULg

Conference given outside the academic context (2012)

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See detailEnvironmental product declarations of mineral paving, a tool for sustainable product choices
Belboom, Sandra ULg; Renzoni, Roberto ULg; Tourneur, Francis ULg et al

Poster (2012, March 22)

This study performs the environmental product declarations for three Belgian mineral products, two granite and one sandstone paving. Both main goals of this work were to obtain Belgian environmental ... [more ▼]

This study performs the environmental product declarations for three Belgian mineral products, two granite and one sandstone paving. Both main goals of this work were to obtain Belgian environmental product declarations to strengthen existing databases and to get similar information for their Asian counterparts. Indeed, competition with China for bluestone products and with India for sandstone pavement is very important due to very competitive prices despite their foreign origin and possibly higher induced environmental impacts. [less ▲]

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See detailFrom universal to local: celebrating new saints in the Southern Netherlands
Delfosse, Annick ULg

Conference (2012, March 22)

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See detailDevelopment of diamond AGPM coronagraphs for VISIR and NACO
Delacroix, Christian ULg; Habraken, Serge ULg; Karlsson, Mikael et al

Conference (2012, March 22)

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See detailPartnership in medicine : how to promote the collaboration between general practitioners, occupational physicians and social insurance physicians
Mairiaux, Philippe ULg; Vanmeerbeek, Marc ULg; Schippers, Nathalie ULg et al

Conference (2012, March 22)

Introduction: Many situations justify a close collaboration between GP, OP and SIP. Health problems impact work activity and vice versa. An altered health situation confronts workers with the risk of ... [more ▼]

Introduction: Many situations justify a close collaboration between GP, OP and SIP. Health problems impact work activity and vice versa. An altered health situation confronts workers with the risk of exclusion from the labour market. An interprofessional collaboration is thus needed to promote a more active policy of rehabilitation of workers on long term sickness absence. The Belgian Ministry of Employment initiated this study to identify communication channels and tools that could support collaboration among those health professionals. Methods: To this purpose, 8 nominal groups were organised to think about proposals to improve interdisciplinary collaboration. In sum 42 GP’s, 16 OP’s and 16 SIP’s participated in the discussions. For the elaboration of the final proposals, the research team relied on a multidisciplinary expert group. Results: An asymmetric relation was observed; each group expressed the need to receive information from the two others, but proposals to transfer information were rare. Exchanges in the groups showed that reciprocal ignorance is important and communication modalities are poor. A profound revision of the information transmission procedures seemed necessary. Several practical proposals were made to improve communication in case of sickness absence over three months, to allow information transfer and to promote mutual respect between the three disciplines. Other proposals considered professional training, and professional competencies which need to be better defined. Discussion: Misconceptions of the role of the different professional disciplines form a barrier to an effective collaboration. Technical and regulatory measures alone will not bring about a real promotion of interdisciplinary collaboration. The proposals arising from the study will contribute to increase reciprocal knowledge between professionals from the three disciplines and thus form the basis of a more effective collaboration. In turn, the experience of collaboration could have a beneficial effect on the reciprocal representations of each partner role. [less ▲]

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See detailAMICE: erste internationale Modellrechnung der Maas
Becker, Bernhard; Patzke, Simone; Detrembleur, Sylvain ULg et al

in Forum für Hydrologie und Wasserbewirtschaftung (2012, March 22), 12(31), 165-170

Im Rahmen des AMICE-Projektes wurde eine erste zusammenhängende internationale Modellrechnung für den gesamten Flusslauf der Maas inklusive des Nebenflusses Rur durchgeführt. Dazu wurden die in den ... [more ▼]

Im Rahmen des AMICE-Projektes wurde eine erste zusammenhängende internationale Modellrechnung für den gesamten Flusslauf der Maas inklusive des Nebenflusses Rur durchgeführt. Dazu wurden die in den Anrainerstaaten Frankreich, Belgien, Deutschland und der Niederlande vorgehaltenen numerischen Modelle verwendet. Die Randbedingungen dieser Modelle wurden in einem iterativen Prozess abgeglichen. Die Ergebnisse der zusammenhängenden Simulation tragen zunächst zu einem besseren Systemverständnis bei. Im weiteren Verlauf des Projektes fließen sie in eine Risikobetrachtung ein und werden zur Bewertung von Maßnahmen zur Reduzierung des Hochwasserrisikos vor dem Hintergrund zu erwartender Änderung der Bemessungsgrößen infolge einer erwarteten Klimaänderung herangezogen. [less ▲]

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See detailRickert On Historical Sciences: A Critical Appraisal
Dewalque, Arnaud ULg

Conference (2012, March 22)

In this talk I discuss a significant objection that has been raised against the view of historical sciences held by Heinrich Rickert: the accusation of “fruitless formalism”. This accusation has been ... [more ▼]

In this talk I discuss a significant objection that has been raised against the view of historical sciences held by Heinrich Rickert: the accusation of “fruitless formalism”. This accusation has been expressed by a large number of thinkers, including for instance Wilhelm Wundt, Edmund Husserl, Max Frischeisen-Köhler and Eduard Spranger. As one knows, Rickert answered the objection in the last editions of his major book, "The Limits of the Concept Formation in Natural Sciences". His strategy was, first, to distance himself from a certain interpretation I will call the “formal view”, and, second, to argue for the fruitfulness of his own, more sophisticated view. However, as suggested by other representatives of the Bade School (like Richard Kroner), it is doubtful that the Rickert view perfectly succeeded in resorbing the shortcomings of the formal view. - In the first, introductive section I will put the formalism-problem in connection with a definite sub-set of issues within the broader framework of the philosophy of history (1). In the second and third sections I will address two questions related, respectively, to the nature of historical form (2) and to the nature of historical material (3). I will then contrast the formal view with the Rickert view on the one hand and with Kroner’s contentual view on the other hand. In the last, conclusive section I will try to draw some general implications of the formalism-controversy (4). [less ▲]

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See detailThe connection between inner and outer debris disks probed by infrared interferometry
Absil, Olivier ULg

Conference (2012, March 22)

The far-infrared surveys of nearby main sequence stars performed since the launch of IRAS have shown that a significant fraction of main sequence stars are surrounded by cold dust populations. These ... [more ▼]

The far-infrared surveys of nearby main sequence stars performed since the launch of IRAS have shown that a significant fraction of main sequence stars are surrounded by cold dust populations. These surveys are now culminating with the the DUNES and DEBRIS key projects of the Herschel Space Observatory, which is more sensitive than ever and is able to detect cold dust populations with densities similar to that of the solar system Kuiper belt. However, little is known about the occurence of warm dust populations, the equivalent of our zodiacal cloud. Since 2005, high-precision infrared interferometers have opened a new way to directly resolve these exozodiacal dust populations. Interferometric observations enable to reach dynamic ranges (larger than 100:1) that are generally not achievable with classical spectro-photometric observations. We are currently carrying out a survey to characterise the hot dust populations around main sequence stars. The first results of this survey, performed on the CHARA array with the FLUOR instrument, will be presented in this talk. The results are based on a magnitude-limited sample of stars surrounded by cold dust and on an equivalent sample of stars showing no cold dust emission. The statistics for the occurence of bright exozodiacal disks will be presented, and compared with the Spitzer and Herschel results. The possible (dynamical) connections between the two populations will be discussed. We will also review the results obtained by other interferometers and discuss the on-going projects. [less ▲]

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See detailL'explosion du journalisme : des médias de masse à la masse des médias. Animation du débat avec Ignacio Ramonet
Geuens, Geoffrey ULg

Conference given outside the academic context (2012)

Detailed reference viewed: 49 (13 ULg)