Publications ORBi OA
Bookmark and Share    
Full Text
See detailOnderzoek Verplaatsingsgedrag Vlaanderen 4.1 (2008-2009): Verkeerskundige interpretatie van de belangrijkste gegevens
Miermans, Willy; Janssens, Davy; Cools, Mario ULiege et al

Report (2010)

Detailed reference viewed: 6 (0 ULiège)
Full Text
See detailFish farm impacts on meiofauna and the microbenthic loop in Posidonia oceanica meadows
Pete, Dorothée ULiege; Mannard, Jennifer ULiege; Velimirov, Branko et al

in Hendrik, Gheerardyn; Nara Bezerra, Tania; Cnudde, Clio (Eds.) et al Fourteenth International Meiofauna Conference, Aula Academia, Ghent, 11-16 July 2010. (2010, July)

For about ten years, fish farming has been expanding all over the world. Even if this way of producing fishes is presented as a solution against overfishing, its impact on the surrounding environment can ... [more ▼]

For about ten years, fish farming has been expanding all over the world. Even if this way of producing fishes is presented as a solution against overfishing, its impact on the surrounding environment can be important. For example, meadows of Posidonia oceanica, the endemic seagrass of the Mediterranean coastal zone, are fading close to those aquaculture, showing negative impacts on this hot spot of biodiversity. This seagrass is used as an indicator of perturbations, although it does not react quickly, mainly because of its low turnover rate (1,5 y-1). So, it is proposed here to use meiofauna and the microbenthic loop (organic matter, bacteria, microphytobenthos and meiofauna) of this ecosystem to detect earlier perturbations due to fish farms. Moreover, the exergy index, measuring the distance between an ecosystem and its optimum state (climax), is also calculated on the microbenthic loop in order to show its interrest in ecological studies. Study sites are both situated in the Gulf of Calvi (Corsica, France), in P. oceanica meadows, at a depth of 22 m. The studied fish farm is small (10 cages), situated offshore in front of Calvi and produces 40 tons of seabass (Dicentrarchus labrax) per year. The reference site is located in front of the research station STARESO (STation de REcherches Sous-marine et Oceanographiques). Sediment cores (diameter: 4,7 cm) were taken in November 2008 at both sites and sliced in four layers (0-1 cm, 1-2 cm, 2-5 cm and 5-10 cm), according to the expected abundance of meiofauna organisms. Biomass and abundance of every parts of the microbenthic loop were thus analysed. Results concerning abundance, biomass and diversity of meiofauna organisms are presented here and compared with the rest of the microbenthic loop. Values of biomasses are also integrated in the calculation of the exergy index. Finally, this study evaluate the interest of meiofauna and the microbenthic loop to detect perturbations due to an aquaculture. [less ▲]

Detailed reference viewed: 93 (12 ULiège)
Full Text
See detailThermal performance of condensing boilers
Makaire, Danielle ULiege; Ngendakumana, Philippe ULiege

Scientific conference (2010, July)

Nowadays, condensing technology is widely used in space heating. This paper presents a model that predicts thermal performance of condensing boilers. The structure of the model is similar to the one of a ... [more ▼]

Nowadays, condensing technology is widely used in space heating. This paper presents a model that predicts thermal performance of condensing boilers. The structure of the model is similar to the one of a conventional boiler model with a dry heat exchanger at which a wet heat exchanger is added to simulate the heat recovered by condensation. Tests have been performed on two household 24 kW condensing boilers (gas- and oil-fired boilers). The experimental results are compared to the simulated values. According to the results, the model correctly predicts the thermal efficiency of the boiler. Indeed, predicted values are in good agreement with measured values (if one takes into account the measurements uncertainties). [less ▲]

Detailed reference viewed: 167 (5 ULiège)
Full Text
See detailCAPACITY BUILDING OF ACP EXPERTS AND MIDDLE MANAGERS
Schiffers, Bruno ULiege

in EDULEARN10 Conference (2010, July)

Detailed reference viewed: 31 (9 ULiège)
Full Text
See detailL'abreuvement des porcs : une eau en quantité et de qualité !
Boudry, Christelle ULiege

Article for general public (2010)

Detailed reference viewed: 110 (5 ULiège)
Full Text
Peer Reviewed
See detailCongostrip, La Bande Dessinée Congolaise
Dony, Christophe ULiege; Bragard, Véronique

in Revue Nouvelle (2010)

Detailed reference viewed: 88 (13 ULiège)
Full Text
Peer Reviewed
See detailShort range of motion isokinetic testing of wrist flexors and extensors strength in normal subjects and patients with carpal tunnel syndrome
Reichard, L. Bezalel; Katz-Leurer, Michal; Rubinstein, Meron et al

in Journal of Strength & Conditioning Research (2010), 24(7), 1866-1873

Detailed reference viewed: 80 (10 ULiège)
Full Text
Peer Reviewed
See detailFormation and evolution of planetary systems: the impact of high-angular resolution optical techniques
Absil, Olivier ULiege; Mawet, Dimitri

in Astronomy and Astrophysics Review (2010), 18(3), 317-382

The direct images of giant extrasolar planets recently obtained around several main sequence stars represent a major step in the study of planetary systems. These high-dynamic range images are among the ... [more ▼]

The direct images of giant extrasolar planets recently obtained around several main sequence stars represent a major step in the study of planetary systems. These high-dynamic range images are among the most striking results obtained by the current generation of high-angular resolution instruments which will be superseded by a new generation of instruments in the coming years. It is, therefore, an appropriate time to review the contributions of high-angular resolution visible/infrared techniques to the rapidly growing field of extrasolar planetary science. During the last 20 years, the advent of the Hubble Space Telescope, of adaptive optics on 4- to 10-m class ground-based telescopes, and of long-baseline infrared stellar interferometry, has opened a new viewpoint on the formation and evolution of planetary systems. By spatially resolving the optically thick circumstellar discs of gas and dust where planets are forming, these instruments have considerably improved our models of early circumstellar environments and have thereby provided new constraints on planet formation theories. High-angular resolution techniques are also directly tracing the mechanisms governing the early evolution of planetary embryos and the dispersal of optically thick material around young stars. Finally, mature planetary systems are being studied with an unprecedented accuracy thanks to single-pupil imaging and interferometry, precisely locating dust populations and putting into light a whole new family of long-period giant extrasolar planets. [less ▲]

Detailed reference viewed: 22 (2 ULiège)
Full Text
See detailÉditer autrement. Faire comme tout le monde comme personne
Habrand, Tanguy ULiege

Article for general public (2010)

Detailed reference viewed: 72 (15 ULiège)
Full Text
See detailPublie.net : La littérature est-elle soluble dans le numérique ?
Habrand, Tanguy ULiege

Article for general public (2010)

Detailed reference viewed: 70 (10 ULiège)
Full Text
See detailLe classement des bois feuillus sur pied
Jourez, Benoît ULiege; de Wauters, Philippe; Bienfait, Orane

in Silva Belgica (2010), 117

Cet article a pour objectif de se familiariser avec les critères d’estimation de la qualité et du classement des bois feuillus. Cette technique relativement subjective répartit la ressource en différentes ... [more ▼]

Cet article a pour objectif de se familiariser avec les critères d’estimation de la qualité et du classement des bois feuillus. Cette technique relativement subjective répartit la ressource en différentes catégories correspondant à des qualités particulières. Avec l’expérience, il est possible d’évaluer la valeur d’un arbre assez rapidement sur base de critères simples. Néanmoins, cette valeur globale dépend du prix attribué à chaque qualité. Le prix est en effet lié à de nombreux paramètres tels que l’offre et la demande, les quantités proposées, les conditions d’exploitation, la confiance de l’acheteur, la connaissance des marchés potentiels, … [less ▲]

Detailed reference viewed: 160 (1 ULiège)
Full Text
Peer Reviewed
See detailA sorting optimization curve with quality and yield requirements
Ooms, David ULiege; Palm, Rodolphe ULiege; Leemans, Vincent ULiege et al

in Pattern Recognition Letters (2010), 31(9), 983-990

Binary classifiers used for sorting can be compared and optimized using receiver-operating characteristic (ROC) curves which describe the trade-off between the false positive rate and true positive rate ... [more ▼]

Binary classifiers used for sorting can be compared and optimized using receiver-operating characteristic (ROC) curves which describe the trade-off between the false positive rate and true positive rate of the classifiers. This approach is well suited for the diagnosis of human diseases where individual costs of misclassification are of great concern. While it can be applied to the sorting of merchandise or other materials, the variables described by the ROC curve and its existing alternatives are less relevant for that range of applications and another approach is needed. In this paper, quality and yield factors are introduced into a sorting optimization curve (SOC) for the choice of the operating point of the classifier, associated with the prediction of output quantity and quality. Given examples are the sorting of seeds and apples with specific requirements. In both cases the operating point of the classifier is easily chosen on the SOC, while the output characteristics of the sorted product are accurately predicted. [less ▲]

Detailed reference viewed: 159 (37 ULiège)
Full Text
See detailUn outil en ligne pour évaluer et concevoir des projets d'urbanisme durable
Boniver, Véronique ULiege; Cremasco, Veronica; Dopagne, Claude ULiege et al

in Cahiers de l'Urbanisme (Les) (2010), 75

In regards to the works of CPDT (Conférence Permanente du Développement Territorial: Standing Conference regarding Land Use and Planning in Wallonia, Be), an interdisciplinary research between the ... [more ▼]

In regards to the works of CPDT (Conférence Permanente du Développement Territorial: Standing Conference regarding Land Use and Planning in Wallonia, Be), an interdisciplinary research between the university of Liège (Lepur) and the Catholic University of Louvain (CREAT) enabled the realization of a software. The aim of this software is to help in the conception or the evaluation of town planning projects sustainable development oriented. As a first stage, this tool has been created to evaluate on the environmental level projects of new buildings before their construction. Thanks to a dynamic website, this tool is scalable. Afterwards it could be improved regarding the propositions of the users. The tool is currently in its first version and enables users to test online their project and receive a first environmental evaluation of it including personalized recommendations based on a best practice guide. [less ▲]

Detailed reference viewed: 101 (18 ULiège)
Full Text
Peer Reviewed
See detailGrafted block complex coacervate core micelles and their effect on protein adsorption on silica and polystyrene
Brzozowska, Agata M.; de Keizer, Arie; Norde, Willem et al

in Colloid and Polymer Science (2010), 288(10/11), 1081-1095

We have studied the formation and the stability of grafted block complex coacervate core micelles (C3Ms) in solution and the influence of grafted block C3M coatings on the adsorption of the proteins beta ... [more ▼]

We have studied the formation and the stability of grafted block complex coacervate core micelles (C3Ms) in solution and the influence of grafted block C3M coatings on the adsorption of the proteins beta-lactoglobulin, bovine serum albumin, and lysozyme. The C3Ms consist of a grafted block copolymer PAA(21)-b-PAPEO(14) (poly(acrylic acid)-b-poly(acrylate methoxy poly(ethylene oxide)), with a negatively charged PAA block and a neutral PAPEO block and a positively charged homopolymer P2MVPI (poly(N-methyl 2-vinyl pyridinium iodide). In solution, these C3Ms partly disintegrate at salt concentrations between 50 and 100 mM NaCl. Adsorption of C3Ms and proteins has been studied with fixed-angle optical reflectometry, at salt concentrations ranging from 1 to 100 mM NaCl. In comparison with the adsorption of PAA(21)-b-PAPEO(14) alone adsorption of C3Ms significantly increases the amount of PAA(21)-b-PAPEO(14) on the surface. This results in a higher surface density of PEO chains. The stability of the C3M coatings and their influence on protein adsorption are determined by the composition and the stability of the C3Ms in solution. A C3M-PAPEO(14)/P2MVPI(43) coating strongly suppresses the adsorption of all proteins on silica and polystyrene. The reduction of protein adsorption is the highest at 100 mM NaCl (> 90%). The adsorbed C3M-PAPEO(14)/P2MVPI(43) layer is partly removed from the surface upon exposure to an excess of beta-lactoglobulin solution, due to formation of soluble aggregates consisting of beta-lactoglobulin and P2MVPI(43). In contrast, C3M-PAPEO(14)/P2MVPI(228) which has a fivefold longer cationic block enhances adsorption of the negatively charged proteins on both surfaces at salt concentrations above 1 mM NaCl. A single PAA(21)-b-PAPEO(14) layer causes only a moderate reduction of protein adsorption. [less ▲]

Detailed reference viewed: 42 (2 ULiège)
Full Text
See detail3D-reconstruction and overall topology of the dimeric mitochondrial ATP synthase of the colorless alga Polytomella sp
González-Halphen, Diego; Vázquez-Acevedo, Myriam; Cano-Estrada, Araceli et al

in Biochimica et Biophysica Acta (BBA) - Bioenergetics (2010, July), 1797(Supplement 1), 32

Detailed reference viewed: 45 (8 ULiège)
Full Text
Peer Reviewed
See detailCatherine Remy. La fin des bêtes. Une ethnographie de la mise à mort des animaux
Servais, Véronique ULiege

in Annales : Histoire, Sciences Sociales (2010), 4

Detailed reference viewed: 472 (17 ULiège)
Full Text
Peer Reviewed
See detailDynamic Modeling and Validation of Radiant Ceiling Systems Coupled to its Environment
Fonseca, Néstor; Cuevas, Cristian; Lemort, Vincent ULiege

(2010, July)

This paper presents the results of a study performed in order to develop a dynamic model of radiant ceiling panels in heating or cooling modes coupled to its environment (fenestration, walls, internal ... [more ▼]

This paper presents the results of a study performed in order to develop a dynamic model of radiant ceiling panels in heating or cooling modes coupled to its environment (fenestration, walls, internal loads and ventilation system). The model considers the radiant panels as a dynamic-state finned heat exchanger connected to a detailed lumped dynamic model of the building (R-C network). The behavior of the radiant ceiling system and the interactions with its environment has been experimentally and numerically evaluated. Using as inputs the radiant ceiling and room dimensions, material properties and the transient measurements of air temperature at the adjacent zones, supply air and water temperatures and mass flow rates, the model allows for the estimation of the water exhaust temperature, radiant ceiling average surface temperature, resultant and dry air room temperatures, radiant ceiling power and internal surface temperatures of the room in order to compare with measurements taken during the commissioning process. Two dynamic tests in heating and cooling modes are used to validate the model. [less ▲]

Detailed reference viewed: 53 (7 ULiège)