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See detailMacrophyte biological index for rivers (MBIR) application for an ecological assessment of walloon rivers, prelilminary investigations.
Sossey Alaoui, Khadija ULg; Galoux, D.; Rosillon, Françis ULg

Conference (2009)

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of ... [more ▼]

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of rivers. Within each collected sample, macrophyte data were gathered at species level and the main water quality parameters were analyzed. This involved the use of two approaches: firstly, methods of ordination and classification (Principal Component Analysis and Multiple Factorial Analysis) and secondly, aquatic macrophyte community indexes. The Macrophyte Biological Index for Rivers (MBIR) was used to define the ecological status of the macrophyte community in response to eutrophication pressure. Four trophic qualities were detected in all the monitored stations: 56% of the sites showed a good trophic quality, with the Ardennes region in the leading position and only 2% of the sites showed a poor trophic quality. A Multiple Factorial Analysis (MFA) made it possible to regroup the species according to their ecological affinities and to specify their indicator values in relation to some abiotic parameters. As a result, a rivers typology was outlined based on this analysis. The dendrogram of the Hierarchical Cluster Analysis (HCA) gave three clusters determined by active variables of each compartment that defined functional parts of the Walloon network: Chiloscyphus polyanthos (L.) Corda, Rhynchostegium riparioides(Hedw.)C.Jens., Fontinalis squamosa(Hedw) and Ranunculus penicillatus (Dum.)Bb. showed an oligotrophic status and low mineralization in the Ardennes (GI), while P. pectinatus(Linne), Cladophora glomerata(Linnaeus)proved to be found more often in eutrophicated waters in the Region limoneuse (GIII). Pellia endvifolia (Dicks.)Dum, Fissidens crassipes(Br.Eur);Cinclidotus riparius (Web. & Mohr.) appeared in the Condroz and Famenne, rivers characterized by a high concentration of nitrogen (N-35. NO3-) (GII). [less ▲]

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See detailLa réception du droit international aux Etats-Unis, en France et en Belgique : Étude comparative
Orban, Hélène ULg

in Revue de la Faculté de Droit de l'Université de Liège (2009), (3), 381-403

The article summarizes the way three countries - the United States, France and Belgium - welcome the international law in their municipal system.

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See detailInterest of Locometrix compared with others clinical tests to assess gait’s profile in some specific old populations
Gillain, Sophie ULg; Warzee, Emmanuelle ULg; Maquet, Didier ULg et al

in Journal of Nutrition, Health & Aging (The) (2009), 13(Supp 1),

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See detailMay rare metallophytes benefit from disturbed soils following mining activities ? The case of the Crepidorhopalon tenuis in Katanga (D.R. COngo)
Faucon, Michel Pierre; Parmentier, Ingrid; Collinet, Gilles et al

in Restoration Ecology (2009), 19

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See detailTerritorial intelligence is also networking! Which strategies could be adopted to create a learning community regarding a public place?
Schmitz, Serge ULg; De Graef, Sarai; Ericx, Michel et al

in Girardot, Jean Jacques (Ed.) Acts of the Annual International Conference of Territorial Intelligence, Besançon 2008 (2009)

Although tools and methods are of major importance for territorial intelligence, each action research begins with the creation of a network of actors and researchers. How to do it? Which strategies are ... [more ▼]

Although tools and methods are of major importance for territorial intelligence, each action research begins with the creation of a network of actors and researchers. How to do it? Which strategies are the most efficient and ethically acceptable? The paper analyses how stakeholders of a public place were joined to work together on a new approach of management and use of a certain public place. It compares the different networking strategies used in five case studies of the Topozym action-research. [less ▲]

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See detailPrévention de la resténose et des accidents cardiaques après angioplastie coronaire chez le diabétique
Nyssen, Astrid; Legrand, Victor ULg; Scheen, André ULg

in Revue Médicale de la Suisse Romande (2009), 5

Différentes approches pharmacologiques systémiques ont été testées pour réduire le risque de resténose et de complications après angioplastie coronaire, avec ou sans stent, objectif prioritaire dans la ... [more ▼]

Différentes approches pharmacologiques systémiques ont été testées pour réduire le risque de resténose et de complications après angioplastie coronaire, avec ou sans stent, objectif prioritaire dans la population diabétique où ce risque est significativement accru. Le but de cet article est de décrire les effets des principales classes médicamenteuses évaluées quant au risque de resténose, à la nécessité de recourir à de nouvelles procédures de revascularisation et à l’incidence des événements cardiaques majeurs (décès, infarctus non mortels et revascularisations). Nous analyserons le rôle des antiagrégants plaquettaires, des acides gras oméga 3, des statines, des anti-inflammatoires, des immunomodulateurs, des anti-oxydants et des inhibiteurs du système rénine-angiotensine. Dans toute la mesure du possible, nous centrerons notre atten tion sur les résultats obtenus dans la population diabétique. [less ▲]

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See detailColony collapse disorder: a descriptive study.
Vanengelsdorp, Dennis; Evans, Jay D; Saegerman, Claude ULg et al

in PLoS ONE (2009), 4(8), 6481

BACKGROUND: Over the last two winters, there have been large-scale, unexplained losses of managed honey bee (Apis mellifera L.) colonies in the United States. In the absence of a known cause, this ... [more ▼]

BACKGROUND: Over the last two winters, there have been large-scale, unexplained losses of managed honey bee (Apis mellifera L.) colonies in the United States. In the absence of a known cause, this syndrome was named Colony Collapse Disorder (CCD) because the main trait was a rapid loss of adult worker bees. We initiated a descriptive epizootiological study in order to better characterize CCD and compare risk factor exposure between populations afflicted by and not afflicted by CCD. METHODS AND PRINCIPAL FINDINGS: Of 61 quantified variables (including adult bee physiology, pathogen loads, and pesticide levels), no single measure emerged as a most-likely cause of CCD. Bees in CCD colonies had higher pathogen loads and were co-infected with a greater number of pathogens than control populations, suggesting either an increased exposure to pathogens or a reduced resistance of bees toward pathogens. Levels of the synthetic acaricide coumaphos (used by beekeepers to control the parasitic mite Varroa destructor) were higher in control colonies than CCD-affected colonies. CONCLUSIONS/SIGNIFICANCE: This is the first comprehensive survey of CCD-affected bee populations that suggests CCD involves an interaction between pathogens and other stress factors. We present evidence that this condition is contagious or the result of exposure to a common risk factor. Potentially important areas for future hypothesis-driven research, including the possible legacy effect of mite parasitism and the role of honey bee resistance to pesticides, are highlighted. [less ▲]

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See detailQuelques réflexions sur l'irrecevabilité des poursuites
Franchimont, Michel; Jacobs, Ann ULg

in Liber amicorum Henri-D. Bosly (2009)

L'article tente d'identifier les causes, tant légales que jurisprudentielles d'irrecevabilité des poursuites et leurs conséquences sur le procès.

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See detailLa motivation des arrêts de la cour d'assises : révolution ou marche d'Echternach ?
Jacobs, Ann ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2009)

Dans la foulée de l'arrêt de l'arrêt Taxquet c. Belgique rendu le 13 janvier 2009 par la Cour européenne des droits de l'homme, la Cour de cassation est saisie de différents pourvois contre des verdicts ... [more ▼]

Dans la foulée de l'arrêt de l'arrêt Taxquet c. Belgique rendu le 13 janvier 2009 par la Cour européenne des droits de l'homme, la Cour de cassation est saisie de différents pourvois contre des verdicts de culpabilité non motivés; elle se montre hésitante quant à exiger la motivation du verdict de culpabilité de la cour d'assises dans tous les cas. [less ▲]

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See detailGenetic diversity and germplasm conservation of three minor Andean tuber crop species
Malice, Marie ULg; Baudoin, Jean-Pierre ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2009), 13(3), 441-448

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See detailAdjoint Equations and Error Measure in Radiative Heat Transfer with Diffuse Reflection
Vueghs, Pierre ULg; Rochus, Pierre ULg

in Proceedings of the ASME 2009 Heat Transfer Summer Conference HT2009 (2009)

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See detailUse of the “Radiosity Importance Concept” in the Error Estimation in Radiative Heat Transfer Design of Spacecraft
Vueghs, Pierre ULg; Rochus, Pierre ULg; de Koning, Hans-Peter et al

in 1st INTERNATIONAL CONFERENCE OF SPACE TECHNOLOGY - ICST 2009 (2009)

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See detailA Xylophone Bar Magnetometer for micro/pico satellites
Rochus, Véronique ULg; Lamy, Hervé; Niyonzima, Innocent et al

in Materials and Structures Symposium (C2.8): Specialised Technologies, including Nanotechnology (2009)

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See detailRecalling semantic information about personally known faces and voices
Brédart, Serge ULg; Barsics, Catherine ULg; Hanley, Rick

in European Journal of Cognitive Psychology (2009), 21(7), 1013-1021

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See detailDetection of nonlinearity in a dynamic system using deformation modes obtained from the Wavelet Transfrom of measured responses
Nguyen, Viet Ha ULg; Peeters, Maxime ULg; Golinval, Jean-Claude ULg

Conference given outside the academic context (2009)

An efficient approach to Structural Health Monitoring of dynamical systems based on the Wavelet Transform (WT) and the concept of subspace angle is presented. The objective is to propose a detection ... [more ▼]

An efficient approach to Structural Health Monitoring of dynamical systems based on the Wavelet Transform (WT) and the concept of subspace angle is presented. The objective is to propose a detection method that is sensitive to the onset of nonlinear behaviour in a dynamic system. For this purpose, instantaneous frequencies are identified first from output-only vibration signals using the Wavelet Transform. Time varying deformation shapes are then extracted by analyzing the whole measurement data set on the structure. From this information, different dynamic states of the structure may be detected by inspecting time variations of ‘modal’ features. The experimental structure considered here as application example is a clamped beam with a geometric nonlinearity. Detection of nonlinearity is carried out by means of the concept of subspace angles between instantaneous deformation modes extracted from measurement data using the continuous Wavelet Transform. The method consists in controlling the angular coherence between active subspaces of the current and reference states respectively. The proposed technique, which shows a good sensitivity to small changes in the dynamic behaviour of the structure, may also be used for damage detection. [less ▲]

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See detailParameter estimation and structural model updating using modal methods in the presence of nonlinearity
Golinval, Jean-Claude ULg

Conference given outside the academic context (2009)

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See detailThe Masses and Radii of HD186753B and TYC7096-222-1B: The First M-dwarfs known to Eclipse A-type Stars
Bentley, S. J.; Smalley, B.; Maxted, P. F. L. et al

in Astronomy and Astrophysics (2009)

We present observations of two new single-lined eclipsing binaries, both consisting of an Am star and an M-dwarf, discovered by the Wide Angle Search for Planets transit photometry survey. Using WASP ... [more ▼]

We present observations of two new single-lined eclipsing binaries, both consisting of an Am star and an M-dwarf, discovered by the Wide Angle Search for Planets transit photometry survey. Using WASP photometry and spectroscopic measurements we find that HD186753B has an orbital period of $P=1.9194$ days, a mass of $M=0.24\pm0.02 M_{\odot}$ and radius of $R=0.31^{+0.06}_{-0.06} R_{\odot}$; and that TCY7096-222-1B has an orbital period of $P=8.9582$ days, a mass of between 0.29 and 0.54 $M_{\odot}$ depending on eccentricity and radius of $R=0.263^{+0.02}_{-0.07} R_{\odot}$. We find that the Am stars have relatively low rotational velocities that closely match the orbital velocities of the M-dwarfs, suggesting that they have been "spun-down" by the M-dwarfs. [less ▲]

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See detailBlack British Literature
Ledent, Bénédicte ULg

in Birch, Dinah (Ed.) The Oxford Companion to English Literature, seventh edition (2009)

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See detailDamage and functional recovery of the Atlantic cod (Gadus morhua) inner ear hair cells following local injection of gentamicin
Faucher, Karine ULg; Aas-Hansen, Øyvind; Damsgård, Borge et al

in International Journal of Audiology (2009), 48(7), 456-464

This study addresses the ultrastructural and functional damage and subsequent recovery of the inner ear in the Atlantic cod following intrasaccular gentamicin injection. Inner ear damage was assessed ... [more ▼]

This study addresses the ultrastructural and functional damage and subsequent recovery of the inner ear in the Atlantic cod following intrasaccular gentamicin injection. Inner ear damage was assessed using SEM and measurements of AEP following 250-Hz pure-tone stimuli. Data from gentamicin-treated fish were compared with control (no injection) and sham (injection of saline) fish. Control fish had normal response thresholds associated with welldeveloped hair cell bundles in their macula sacculi. Sham fish had higher response thresholds compared with control fish during the first week post-intervention, but response thresholds were subsequently normal. Treated fish displayed significant inner ear damage associated with an increased average AEP threshold on the third day following treatment. Thereafter, inner ear tissue displayed signs of progressive regeneration until it was comparable to controls from the 14th day. Response thresholds were similar to those of control fish from the 17th day following treatment. These observations suggest that the macula sacculi of Atlantic cod can regenerate towards a near-complete functional and ultrastructural recovery within 17-21 days following ototoxic gentamicin treatment. [less ▲]

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