References of "2006"
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See detailQuantifying lymphocyte kinetics in vivo using carboxyfluorescein diacetate succinimidyl ester (CFSE).
Asquith, Becca; Debacq, Christophe; Florins, Arnaud-Francois ULg et al

in Proceedings of the Royal Society B : Biological Sciences (2006), 273(1590), 1165-71

The cytoplasmic dye carboxyfluorescein diacetate succinimidyl ester (CFSE) is used to quantify cell kinetics. It is particularly important in studies of lymphocyte homeostasis where its labelling of cells ... [more ▼]

The cytoplasmic dye carboxyfluorescein diacetate succinimidyl ester (CFSE) is used to quantify cell kinetics. It is particularly important in studies of lymphocyte homeostasis where its labelling of cells irrespective of their stage in the cell cycle makes it preferable to deuterated glucose and BrdU, which only label dividing cells and thus produce unrepresentative results. In the past, experiments have been limited by the need to obtain a clear separation of CFSE peaks forcing scientists to adopt a strategy of in vitro labelling of cells followed by their injection into the host. Here we develop a framework for analysis of in vivo CFSE labelling data. This enables us to estimate the rate of proliferation and death of lymphocytes in situ, and thus represents a considerable advance over current procedures. We illustrate this approach using in vivo CFSE labelling of B lymphocytes in sheep. [less ▲]

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See detailEnergy conserving balance of explicit time steps to combine implicit and explicit algorithms in structural dynamics
Noels, Ludovic ULg; Stainier, Laurent ULg; Ponthot, Jean-Philippe ULg

in Computer Methods in Applied Mechanics & Engineering (2006), 195(19-22), 21692192

Recent developments have proved the advantage of combining both time implicit and time explicit integration algorithms in structural dynamics. A major problem is to define the initial conditions for the ... [more ▼]

Recent developments have proved the advantage of combining both time implicit and time explicit integration algorithms in structural dynamics. A major problem is to define the initial conditions for the implicit simulation on the basis of a solution obtained from an unbalanced explicit resolution. The unbalanced nature of the explicit algorithm leads to oscillations in the fields of interest. Therefore, the values obtained after an explicit computation cannot be used directly as initial conditions for an implicit simulation. In this paper, we develop such initial values that lead to a stable (no numerical creation of energy) and energy-conserving transition. (c) 2005 Elsevier B.V. All rights reserved. [less ▲]

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See detailSound production mechanism in Amphiprion clarkii (Teleostei: Pomacentridae)
Colleye, Orphal ULg; Herrel, Anthony; Vandewalle, Pierre ULg et al

Poster (2006)

In the family Pomacentridae, six genera were reported as sound producers: Amphiprion, Dascyllus, Stegastes, Chromis, Abudefduf and Plectroglyphidodon. The anemonefishes (Amphiprioninae) live in social ... [more ▼]

In the family Pomacentridae, six genera were reported as sound producers: Amphiprion, Dascyllus, Stegastes, Chromis, Abudefduf and Plectroglyphidodon. The anemonefishes (Amphiprioninae) live in social group in association with sea anemones, which protect them from predators. Their sound emissions seem involved in courtship and territorial defense, contributing to both survival and reproductive success. However, the mechanism of sound production is unresolved. It has been hypothesized that it involves swimbladder or the action of the pharyngeal jaws amplified by swimbladder. The aim of this study was to understand the sonic mechanism involved in the agonistic sounds in Amphiprion clarkii. The approach consists in high-speed cineradiography and functional morphology. During agonistic sounds (pops), fishes perform different movements such as skull elevation, pectoral girdle retraction, hyoid lowering and mouth closing. Pops are produced when the hyoid is completely lowered and the mouth closed. The simultaneous realization of these movements was never observed in teleost. In Amphiprion sp., it is possible due to an additional ligament inserted on the hyoid bar and on the inner lower jaw. The hyoid lowering combined to the closing (and thus the elevation) of the mandible could generate a tension of the ligament, provoking its vibration [less ▲]

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See detailDancing droplets onto liquid surfaces
Vandewalle, Nicolas ULg; Terwagne, Denis ULg; mulleners, karin et al

in Physics of Fluids (2006), 18

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See detailProfiter des différences grâce à la coopération : l'apprentissage coopératif, un outil au service des cours de langue en 5e et 6e années primaire
Blondin, Christiane ULg; Crepin, Françoise ULg; Mattar, Cathérine

in (Re)trouver le plaisir d'enseigner et d'apprendre : construire savoirs et compétences : actes du 4e congrès des chercheurs en éducation (2006)

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See detailNew firm property and regional and local service development
Merenne-Schoumaker, Bernadette ULg

in GeolNova (2006), (12), 381-395

In less than ten years, a corporate property market has emerged in Wallonia. This market first covered offices and retail units and recently extended to semi-industrial establishments. Its development is ... [more ▼]

In less than ten years, a corporate property market has emerged in Wallonia. This market first covered offices and retail units and recently extended to semi-industrial establishments. Its development is largely related to the creation of a new type of demand resulting from the growth of new service activities and from new expectations regarding physical units, environment, accessibility and location choices – on both sub-regional and local scales. It has been favoured by the appearance of new property stakeholders, Belgians as well as foreigners (developers, investors and estate agents), but also by public authorities (the Walloon Region and economic development supra-communal agencies). This market’s emergence is related to the deepening of territorial contrasts as property development projects usually reinforce strong areas. [less ▲]

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See detailOrganiser la formation CAPAES : une expérience qui suscite quelques questions
Merenne-Schoumaker, Bernadette ULg

in Puzzle (2006), (20), 31-35

Bilan de l'expérience CAPAES à l'Université de Liège après quatre ans. Analyse au départ de cinq grandes questions

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See detailOptimization Of Issr Marker For African Edible-Seeded Cucurbitaceae Species' Genetic Diversity Analysis
Dje, Yao; Tahi, G. C.; Zoro Bi, Arsène I. et al

in African Journal of Biotechnology (2006), 5(2), 83-87

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See detailOn-line voltage security assessment
Vournas, Costas; Van Cutsem, Thierry ULg

in Savulescu, Savu (Ed.) Real-time stability in power systems: Techniques for the early detection of the risk of blackout (2006)

This chapter deals with voltage security assessment and its on-line application. Methods for contingency analysis are briefly reviewed. The associated con-cepts of transfer capability, loadability limit ... [more ▼]

This chapter deals with voltage security assessment and its on-line application. Methods for contingency analysis are briefly reviewed. The associated con-cepts of transfer capability, loadability limit, and secure operation margin are explored in some detail. Methods for preventive security control are outlined. An application of on-line VSA in the control center of a real system is then de-scribed and typical results available to operators are presented. [less ▲]

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See detailOccupational Activities and Cognitive Reserve: a Frontier Approach Applied to the Survey on Health, Ageing, and Retirement in Europe (SHARE)
Adam, Stéphane ULg; Bonsang, Eric; Germain, Sophie ULg et al

Report (2006)

The aim of this paper was to use a parametric stochastic frontier approach (coming from the economic literature) to explore the impact of the concept of activity (taken in a broad sense: i.e., including ... [more ▼]

The aim of this paper was to use a parametric stochastic frontier approach (coming from the economic literature) to explore the impact of the concept of activity (taken in a broad sense: i.e., including both professional and non-professional activities) on the constitution and the care of cognitive reserve among the European population aged 50 and up. For this purpose, we use individual data collected during the first wave of SHARE (Survey on Health, Ageing and Retirement in Europe) performed in 2004. The advantages of this survey were (1) it included a large population (n = 18,623) geographically distributed throughout Europe; and (2) it simultaneously analyzed several dimensions (physical and mental health, mobility, occupational activities, socioeconomic status, etc.). Our results confirm the positive impact of occupational activities on the cognitive functioning of elderly people. These results are discussed in terms of the prevention of cognitive aging and Alzheimer’s disease, and more particularly of retirement policy issues. [less ▲]

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See detailDévelopper une approche par compétences dans la formation universitaire. Bilan de trois expériences en géographie urbaine et économique
Merenne-Schoumaker, Bernadette ULg

in Bulletin de la Société Géographique de Liège (2006), (48), 55-64

In this article, we’ll be wondering about the point, the challenges and the limits of integrating competences in Higher Education, starting from three experiences lead in Urban and Economic Geography. For ... [more ▼]

In this article, we’ll be wondering about the point, the challenges and the limits of integrating competences in Higher Education, starting from three experiences lead in Urban and Economic Geography. For this purpose, we’ve managed to combine works from Higher Education specialists and observations from the field. This reflection has been built in three stages. First, we’ll be reminding the foundations and specificities of the competence based approach. Then, we’ll be analysing our three experiences with the help of a common grid allowing us to successively consider the original needs and motivations, the process design, its trial and its adjustment. Finally, we’ll be trying to draw conclusion in terms of impacts on the students learning process, and impacts on the way teachers approach their teaching process, its limits and constraints. [less ▲]

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See detailNon intrusive mercury porosimetry: Pyrolysis of resorcinol-formaldehyde xerogels
Job, Nathalie ULg; Pirard, René ULg; Pirard, Jean-Paul ULg et al

in Particle & Particle Systems Characterization (2006), 23(1), 72-81

When submitted to mercury porosimetry, some materials are penetrated by mercury whereas others, among the most porous, are densified by the isostatic pressure. Notably, this is the case for materials ... [more ▼]

When submitted to mercury porosimetry, some materials are penetrated by mercury whereas others, among the most porous, are densified by the isostatic pressure. Notably, this is the case for materials whose structure is made of particles aggregated into filament-like clusters that are interconnected in a 3-D array. Indeed, that kind of material undergoes a volume variation due to hierarchical pore collapse. In the case of intrusion, the mercury porosimetry data are classically analyzed by the Washburn equation. In the case of hierarchical pore collapse, data can be correctly analyzed by the collapse model equation. Using an equation that does not correspond to the mechanism leads to large errors in the pore size distribution. Thus, an accurate data analysis requires prior determination of the mechanism leading to the volume variation recorded as a function of the pressure. The present work particularly examines the complex and unusual behavior of partially pyrolyzed resorcinol-formaldehyde gels when submitted to mercury porosimetry. The unusual behavior encountered complicates the mechanism identification and, therefore, the equation selection. However, the major part of the volume distribution as a function of the pore size can be determined with a good accuracy. [less ▲]

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See detailRange-dependence Issues in Multistatic STAP-based Radar
Neyt, Xavier; Acheroy, Marc; Verly, Jacques ULg

Conference (2006)

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See detailFonctions affines par morceaux : une modélisation de la pratique des financiers
Bair, Jacques ULg; Henry, Valérie ULg

in Justens, Daniel (Ed.) Mathématiques concrètes (2006)

Nous montrons que les pratiques des financiers font apparaître tout naturellement des fonctions affines par morceaux.

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

in M. S. Alves, Pedro; Santos, José Manuel; Sá, Alexandre Franco de (Eds.) Humano e Inumano. A Dignidade do Homem e os Novos Desafios (Actas do Segundo Congresso Internacional da Associação Portuguesa de Filosofia Fenomenológica) (2006)

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See detailLes compétences numériques préverbales : une revue critique
Rousselle, Laurence ULg; Seron, Xavier

in ANAE : Approche Neuropsychologique des Apprentissages chez l'Enfant (2006), 85

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See detailThe immune system as a foundation for immunologic therapy and hematologic malignancies: a historical perspective.
Baron, Frédéric ULg; Storb, Rainer

in Bailliere's Best Practice & Research. Clinical Haematology = Best Practice & Research. Clinical Haematology (2006), 19(4), 637-53

In this review we aim to provide a historical overview of the immunotherapeutic approaches which have been developed for the treatment of hematological malignancies. After briefly summarizing the ... [more ▼]

In this review we aim to provide a historical overview of the immunotherapeutic approaches which have been developed for the treatment of hematological malignancies. After briefly summarizing the development of the theory of cancer immune surveillance, we describe how initial studies discovering the efficacy of the immune-mediated graft-versus-tumor effects after allogeneic hematopoietic cell transplantation led to new transplantation approaches (termed non-myeloablative transplantation) relying almost exclusively on graft-versus-tumor effects for tumor eradication. We then summarize important steps in the development of tumor vaccines and autologous adoptive immunotherapy in patients with hematological malignancies. Finally, we describe historical discoveries leading to the recent success with monoclonal antibodies as treatment for lymphomas, chronic lymphocytic leukemia, and acute myeloid leukemia. [less ▲]

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See detailPeripheral blood B-cell death compensates for excessive proliferation in lymphoid tissues and maintains homeostasis in bovine leukemia virus-infected sheep.
Debacq, Christophe; Gillet, Nicolas ULg; Asquith, Becca et al

in Journal of Virology (2006), 80(19), 9710-9719

The size of a lymphocyte population is primarily determined by a dynamic equilibrium between cell proliferation and death. Hence, lymphocyte recirculation between the peripheral blood and lymphoid tissues ... [more ▼]

The size of a lymphocyte population is primarily determined by a dynamic equilibrium between cell proliferation and death. Hence, lymphocyte recirculation between the peripheral blood and lymphoid tissues is a key determinant in the maintenance of cell homeostasis. Insights into these mechanisms can be gathered from large-animal models, where lymphatic cannulation from individual lymph nodes is possible. In this study, we assessed in vivo lymphocyte trafficking in bovine leukemia virus (BLV)-infected sheep. With a carboxyfluorescein diacetate succinimidyl ester labeling technique, we demonstrate that the dynamics of lymphocyte recirculation is unaltered but that accelerated proliferation in the lymphoid tissues is compensated for by increased death in the peripheral blood cell population. Lymphocyte homeostasis is thus maintained by biphasic kinetics in two distinct tissues, emphasizing a very dynamic process during BLV infection. [less ▲]

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