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See detailL’interleukine-1β augmente le catabolisme de la fibuline-3 par les chondrocytes : démonstration in vitro par la mesure des fragments Fib3-1 et Fib3-2
Gharbi, Myriam; Legrand, Catherine; Sanchez, Christelle ULg et al

in Revue du Rhumatisme (2011), 78(suppl 5), 131-132

Detailed reference viewed: 27 (8 ULg)
See detailInterlocking Biological and Political Uncertainties in Public Decision Making : A Case Study at Mellery (Belgium)
Fallon, Catherine ULg; Laurent, Christian

Conference (1998, October 13)

A central question in health hazard associated with environmental pollution is the evaluation of level of exposure to a mixture of carcinogens and the estimation of the global health impact on the ... [more ▼]

A central question in health hazard associated with environmental pollution is the evaluation of level of exposure to a mixture of carcinogens and the estimation of the global health impact on the residents. The point is important to found a public health decision for site intervention or residents relocalisation. Belgium had to face such a problem at Mellery, a village which became internationally famous some years ago, when local residents denonced a local pollution originating from an industrial waste depository facility situated only 500 m from the centre of their village, in a former sand quarry. A central piece of the actions of the authorities was the original campaign organised to measure directly the level of exposure to carcinogens of a large group of voluntary local residents, children included, by measuring biomarkers of exposure in blood lymphocytes : for its high sensitivity, the frequency of sister chromatid exchanges (SCES) had been chosen. This biomonitoring method, quite commonly used to monitor occupational environment, had never before been applied to evaluate the potential health impact of the environment on a general population. Such data, although sophisticate and integrative, are only indicators of exposure and cannot be used, so far, as individual quantitative predictors of the possible evolution of the health of the individual persons. First designed as an epidemiological study, the campaign at Mellery revealed so high exposure levels that the experts did not keep with the original experimental line and decided to release individual information to the concerned persons, without much preparation nor risk communication policy. Several groups (experts, local doctors, local and regional authorities, public agencies and residents associations) were active integrating the information in their respective discourses, giving them specific interpretative and competing meanings. Any scenario for intervention had to be embedded in some meaningful and legitimating discourse : a quite difficult task for the authorities. The evolution of the expertise system used for public decision-making were marked by several such uncertainties (geological, biological, medical) but also by the difficult integration of health related aspects within environment interventions in the regulatory structures in Belgium : health responsibilities are scattered between federal and "communautaire" bodies, while most of the environmental actions are funded at the regional level. In this first heavy case, the young regional institutions reacted in a disorganized manner: they choose to not put at risk their frail power equilibrium and to not reconsider the attribution of the responsibilities. The authors propose to analyse how peculiar interlocking of the biological and political uncertainties were at the core of the general failure in public risk management around this landfill site: Mellery, after 10 years and a huge budget for site treatment, is still a nightmare for environmental authorities in Southern Belgium. [less ▲]

Detailed reference viewed: 7 (0 ULg)
See detailIntermédiaire du marché du travail : un métier en tensions
Orianne, Jean-François ULg

Conference (2011, November 21)

Detailed reference viewed: 26 (10 ULg)
See detailLes intermédiaires du marché du travail en Région wallonne : une conception clinique de l’employabilité
Orianne, Jean-François ULg

Conference given outside the academic context (2009)

Detailed reference viewed: 18 (2 ULg)
See detailLes intermédiaires du marché du travail en Wallonie : une profession consultante ?
Orianne, Jean-François ULg

Scientific conference (2009, January 26)

Detailed reference viewed: 24 (7 ULg)
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See detailIntermédiaires et dynamique des réseaux fluides. Du mode d'existence de la norme ISO 14001 en Région wallonne
Semal, Nathalie ULg

Doctoral thesis (2011)

How does a standard "make a living"? How does a written list of requirements acquire some reality? How can a particular agreement take effect in numerous worldwide distant sites?

Detailed reference viewed: 84 (7 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Tharakan, Joseph ULg

Conference (2013, July)

Detailed reference viewed: 2 (1 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg; Tharakan, Joseph ULg

E-print/Working paper (2011)

Transport costs play a key role in agricultural markets in developing countries and are one of the causes of poverty amongst farmers that are geographically isolated. Another characteristic of ... [more ▼]

Transport costs play a key role in agricultural markets in developing countries and are one of the causes of poverty amongst farmers that are geographically isolated. Another characteristic of agricultural markets is that they often involve interlinked transactions. However, the existing theoretical literature on interlinked transactions does not take into account the existence of transport costs. This paper develops a model of input-output interlinked contracts between geographically dispersed farmers and a trader, whether this trader is for-profit or non-profit. We derive implications of imposing either uniform or mill pricing policies, as opposed to spatial price discrimination. Impact on profit, farmers' income, level of production, social welfare and regional disparities are investigated. [less ▲]

Detailed reference viewed: 24 (1 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Scientific conference (2011, March)

Detailed reference viewed: 4 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Conference (2011, October)

Detailed reference viewed: 4 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Scientific conference (2011, January)

Detailed reference viewed: 2 (0 ULg)
See detailIntermediaries, transport costs and interlinked transactions
Lefevre, Mélanie ULg

Conference (2011, December)

Detailed reference viewed: 6 (0 ULg)
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See detailIntermediate basal cells of the prostate: In vitro and in vivo characterization
Garraway, Levi; Lin, Douglas; Signoretti, Sabina et al

in Prostate (2003), 55(3), 206-218

BACKGROUND. Progenitor cells within the prostate basal layer may play important roles in differentiation and carcinogenesis; however, prostate stem cell populations remain uncharacterized. METHODS ... [more ▼]

BACKGROUND. Progenitor cells within the prostate basal layer may play important roles in differentiation and carcinogenesis; however, prostate stem cell populations remain uncharacterized. METHODS. Immunohistochemical and immunoblot analyses were used to characterize prostate epithelial cells (PrEC), a commercially available prostate basal cell isolate. RESULTS. Proliferating PrECs exhibited immunophenotypic characteristics most consistent with basal cells, but during senescence PrECs up-regulated androgen receptor (AR) mRNA, p27, and low-molecular-weight cytokeratin (LMWCK) expression, suggestive of partial differentiation. PrECs also stained strongly for involucrin, which marked a subset of intermediate prostate basal cells in vivo. Basal hyperplasia consisting of involucrin-positive cells was prevalent in prostate tissue from androgen-ablated patients, and formed epithelial clusters flanked by involucrin-negative basal and luminal monolayers. Cultivation of PrECs on matrigel together with androgen-treated stromal conditioned media resulted in dense aggregates, with a peripheral rim of basal-like cells expressing p63 and basal cytokeratins. CONCLUSIONS. PrEC represents an epithelial population whose basal characteristics are modified in response to matrigel, stromal factors, and senescence, consistent with a transient amplifying population. These cells may derive from a previously unrecognized, involucrin-positive subset present in vivo. (C) 2003 Wiley-Liss, Inc. [less ▲]

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See detailAn intermediate in the evolution of superfast sonic muscles.
Mok, H.; Parmentier, Eric ULg; Chiu, H. et al

in Frontiers in Zoology (2011), 8

Background Intermediate forms in the evolution of new adaptations such as transitions from water to land and the evolution of flight are often poorly understood. Similarly, the evolution of superfast ... [more ▼]

Background Intermediate forms in the evolution of new adaptations such as transitions from water to land and the evolution of flight are often poorly understood. Similarly, the evolution of superfast sonic muscles in fishes, often considered the fastest muscles in vertebrates, has been a mystery because slow bladder movement does not generate sound. Slow muscles that stretch the swimbladder and then produce sound during recoil have recently been discovered in ophidiiform fishes. Here we describe the disturbance call (produced when fish are held) and sonic mechanism in an unrelated perciform pearl perch (Glaucosomatidae) that represents an intermediate condition in the evolution of super-fast sonic muscles. Results The pearl perch disturbance call is a two-part sound produced by a fast sonic muscle that rapidly stretches the bladder and an antagonistic tendon-smooth muscle combination (part 1) causing the tendon and bladder to snap back (part 2) generating a higher-frequency and greater-amplitude pulse. The smooth muscle is confirmed by electron microscopy and protein analysis. To our knowledge smooth muscle attachment to a tendon is unknown in animals. Conclusion The pearl perch, an advanced perciform teleost unrelated to ophidiiform fishes, uses a slow type mechanism to produce the major portion of the sound pulse during recoil, but the swimbladder is stretched by a fast muscle. Similarities between the two unrelated lineages, suggest independent and convergent evolution of sonic muscles and indicate intermediate forms in the evolution of superfast muscles. [less ▲]

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See detailIntermediate integer programming representations using value disjunctions
Köppe, Matthias ULg; Louveaux, Quentin ULg; Weismantel, Robert

in Discrete Optimization (2008), 5(2), 293-313

We introduce a general technique to create an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The ... [more ▼]

We introduce a general technique to create an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The extended formu- lation is constructed by creating a new binary variable for each generated value. Initial experiments show that the extended formulation can have a more compact complete description than the original formulation. We prove that, using this reformulation technique, the facet descrip- tion decomposes into one “linking polyhedron” per block and the “aggre- gated polyhedron”. Each of these polyhedra can be analyzed separately. For the case of identical coefficients in a block, we provide a complete description of the linking polyhedron and a polynomial-time separation algorithm. Applied to the knapsack with a fixed number of distinct coeffi- cients, this theorem provides a complete description in an extended space with a polynomial number of variables. Based on this theory, we propose a new branching scheme that analyzes the problem structure. It is designed to be applied in those subproblems of hard integer programs where LP-based techniques do not provide good branching decisions. Preliminary computational experiments show that it is successful for some benchmark problems of multi-knapsack type. [less ▲]

Detailed reference viewed: 54 (9 ULg)
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See detailIntermediate integer programming representations using value disjunctions
Louveaux, Quentin ULg

Conference (2006, January)

We introduce a general technique for creating an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The ... [more ▼]

We introduce a general technique for creating an extended formulation of a mixed-integer program. We classify the integer variables into blocks, each of which generates a finite set of vector values. The extended formulation is constructed by creating a new binary variable for each generated value. Initial experiments show that the extended formulation can have a more compact complete description than the original formulation. We prove that, using this reformulation technique, the facet description decomposes into one “linking polyhedron” per block and the “aggregated polyhedron”. Each of these polyhedra can be analyzed separately. For the case of identical coefficients in a block, we provide a complete description of the linking polyhedron and a polynomial-time separation algorithm. Applied to the knapsack with a fixed number of distinct coefficients, this theorem provides a complete description in an extended space with a polynomial number of variables. On the basis of this theory, we propose a new branching scheme that analyzes the problem structure. It is designed to be applied in those subproblems of hard integer programs where LP-based techniques do not provide good branching decisions. Preliminary computational experiments show that it is successful for some benchmark problems of multi-knapsack type. [less ▲]

Detailed reference viewed: 9 (0 ULg)
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See detailIntermediate report on the development of the Geer hydrological model (surface and subsurface water) for climatic change scenario on that sub-catchment
Goderniaux, Pascal ULg; Orban, Philippe ULg; Dassargues, Alain ULg et al

Report (2007)

In the framework of Workpackage BASIN R3 Meuse, the Hydrology Group of the University of Liège (Belgium) is developing a hydrological model of the Geer sub-catchment, in order to assess climate change ... [more ▼]

In the framework of Workpackage BASIN R3 Meuse, the Hydrology Group of the University of Liège (Belgium) is developing a hydrological model of the Geer sub-catchment, in order to assess climate change impacts on groundwater reserves. This report describes the calculation code used, the general hypotheses chosen to develop the model, the conceptual model, the climate change scenarios and the final objectives of the study. [less ▲]

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See detailLes intermittences du corps filmique: Pathologies et blessures de l’image dans la pratique contemporaine du found footage
Thonon, Jonathan ULg

in André, Emmanuelle; Lioult, Jean-Luc (Eds.) Penser la création audiovisuelle (2008)

Depuis un demi-siècle et de manière exponentielle ces vingt dernières années, le champ de l’art contemporain et celui du cinéma n’ont cessé d’engendrer des processus mutuels d’hybridation, par ... [more ▼]

Depuis un demi-siècle et de manière exponentielle ces vingt dernières années, le champ de l’art contemporain et celui du cinéma n’ont cessé d’engendrer des processus mutuels d’hybridation, par contamination(s), échange(s) et transfert(s), rendant à la fois tangible et poreuse la frontière qui semblait s’être définitivement érigée entre l’art de masse et l’art d’élite. Il est une pratique assez symptomatique de cette interrogation muséale qui naît de l’exposition de cinéma. Pratique historiquement ancrée dans cet espace plastique charnière que constitue le cinéma expérimental, le cinéma de found footage nous offre le terrain idéal qui nous permet, à la fois, de penser l’histoire (du cinéma et des formes cinématographiques) au moyen de films qui en constituent, en quelque sorte, la pensée en acte, mais aussi, au regard de l’histoire même de cette pratique et de son évolution et à partir d’objets contemporains qui en réactualisent la forme et le discours, de repenser le rapport « cinéma – art contemporain » à la lueur de formes filmiques renouvelées. [less ▲]

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See detail"Les intermittences du visible. Reprises de vue dans le cinéma expérimental américain"
Belloi, Livio ULg

in Recherches Anglaises et Nord-Américaines [= RANAM] (2012), 45

After a brief historical and theoretical survey of the found footage film tradition, this text discusses the issue of reprise in the field of contemporary experimental cinema, focusing on two films by ... [more ▼]

After a brief historical and theoretical survey of the found footage film tradition, this text discusses the issue of reprise in the field of contemporary experimental cinema, focusing on two films by American filmmaker Bill Morrison. In "The Death Train" (1993), Morrison takes up again three series of distinct images in a gesture that tends to foreground the mechanical dimensions of the cinematic spectacle. In "Decasia" (2002), the filmmaker capitalizes on fragments of decaying nitrate film, thus exploring film as materiality. However different they may seem, both works seem to address the same visual theme, that of visible intermittencies, in so far as they can be considered as an act of definition of a modernity ingrained in the very mechanics of the gaze. [less ▲]

Detailed reference viewed: 21 (4 ULg)