References of "2011"
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See detailResearch of Structural Health Monitoring Based on Mode Analysis for UAV Wings
Guo, Yingnan; Wan, Fangyi; Wu, Ling ULiege et al

in Prognostics and System Health Management Conference (PHM-Shenzhen), 2011 IEEE Conference on (2011)

Unmanned Aerial Vehicle (UA V) structures are prone to damage during their service lives, caused by abominable environment factors. Its structural health monitoring can be effective in reducing ... [more ▼]

Unmanned Aerial Vehicle (UA V) structures are prone to damage during their service lives, caused by abominable environment factors. Its structural health monitoring can be effective in reducing maintenance costs and increasing service life to ensure safe and reliable operation. Two different damaged modal parameters based on modal analysis is discussed in this paper in order to develop an efficient damage identification technique for the UA V wing structures. Its structure modal is a natural attribute of structures, and apparently one of the most important parameters of structure dynamic characteristics. For a well designed aircraft wings structures, its modal pattern should be continuous without local mode. Therefore, based on the modal analysis utilizing numerical methods for a damaged structure, damages location and its extent can be revealed and damage level can be evaluated. All the numerical results illustrated these method are efficient and feasible for structural damage detection. And its can be utilized in structure [less ▲]

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See detailOstéroporose, le mal sournois
Reginster, Jean-Yves ULiege

in Athena (2011), 276

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See detailAn alternative view of deforestation in Central Africa based on a Boserupian framework
Bamba, I.; Visser, M.; Bogaert, Jan ULiege

in Tropicultura (2011), 29(4), 250-254

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See detailEnvironmental issues in the context of sustainable development
Petrescu-Mag, Ruxandra-Malina; Petrescu, Dacinia Crina; Burny, Philippe ULiege

Book published by Les Presses Agronomiques de Gembloux (2011)

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See detailL’adaptation au changement climatique en région wallonne
EcoRes-TEC Conseil; Amelung, Bas; Biernaux, Martin et al

Report (2011)

Climate change is now globally accepted. The 4th IPCC report, published in 2007, clearly indicates that this phenomenon is mostly the result of human activity. All parts of the globe are potentially at ... [more ▼]

Climate change is now globally accepted. The 4th IPCC report, published in 2007, clearly indicates that this phenomenon is mostly the result of human activity. All parts of the globe are potentially at risk. There are no activity sectors that will be left untouched. Adaptation is therefore necessary. Since 2006, the European Commission has been looking at the climate change adaptation issue. It first held a consultation on the European Commission Green Paper “adapting to climate change in Europe - options for EU action”. This led to the publication of the White Paper « Adapting to climate change: towards a European framework for action ». In this document, the EC puts forward the idea of a compulsory Adaptation Strategy at Member State level. Several EU countries have already done so: Finland, United Kingdom and France. Belgium, through the National Climate Commission, adopted its « National Climate Strategy » in late 2010. The objective is to recommend an operational action plan by 2012. This action plan will be the result of a merger between the action plans of the three regions and the federal governments. The Flemish region launched a study to start the development process of their action plan in 2010; the Walloon region has followed with this study and the Brussels region and the Federal should launch their studies during this year (2011). This study enabled to draw a complete review – characteristics, current vulnerabilities, future vulnerabilities - of the Walloon region on seven topics: Agriculture, water, infrastructure/ spatial planning, health, energy, biodiversity and forests. An enlarged experts’ consultation identified key measures to implement in order for Wallonia to adapt to climate change. Chapter 1, « climate change adaptation in European regions », is a stock-taking exercise of adaptation strategies found in Europe in order to draw relevant lessons for this study. Chapter 2: « the climate futures of Wallonia”, is an analysis of the climate projection specifically carried out for this study. Those projections were used to identify Wallonia’s vulnerabilities. Chapter 3 « Wallonia’s vulnerabilities to Climate change” explores the seven themes Agriculture, water, infrastructure/ spatial planning, health, energy, biodiversity and forests to describe the current and future risks and to put forward a time-dependent and sectoral hierarchy of impacts. Chapter 4 « Wallonia’s adaptation to climate change » states the core principles used to define the adaptation choices as well as the proposed guidelines for each theme. Chapter 5 « towards an action plan » presents the adaptation measures by theme along with the first elements of an evaluation procedure. Finally, the appendices contain the operational documents: the full thematic sheets, the action plan, the strategic guideline paper and the transversal analysis and the supporting documents: maps, climate projections database and the benchmarks. [less ▲]

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See detailEuropese rechtspraak : actualia
Durviaux, Ann-Lawrence ULiege

in Marchés et Contrats Publics = Overheidsopdrachten en -Overeenkomsten (2011), 4/2011

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See detailSex differences in the rapid control of aromatase activity in the quail preoptic area.
Konkle, A. T. M.; Balthazart, Jacques ULiege

in Journal of Neuroendocrinology (2011), 23(5), 424-34

Adult male quail show high levels of aromatase activity in the preoptic area-hypothalamus (POA-HYP), which parallels the high number of aromatase-immunoreactive cells and elevated mRNA concentrations ... [more ▼]

Adult male quail show high levels of aromatase activity in the preoptic area-hypothalamus (POA-HYP), which parallels the high number of aromatase-immunoreactive cells and elevated mRNA concentrations detected in this brain region by in situ hybridisation. Interestingly, females display considerably lower aromatase activity than males but have almost equal numbers of aromatase-immunoreactive cells and express similar levels of aromatase mRNA. Aromatase activity in the male POA-HYP can be rapidly regulated by calcium-dependent phosphorylations, in the absence of changes in enzyme concentration. In the present study, we investigated whether aromatase activity is differentially regulated by phosphorylations in males and females. A linear increase in accumulation of aromatisation products was observed in both sexes as a function of time but the rate of conversion was slower in females. Saturation analysis confirmed the lower maximum velocities (V(max) ) in females but indicated a similar affinity (K(m) ) in both sexes. Aromatase activity in females reacted differentially to manipulations of intracellular calcium. In particular, chelating calcium with ethylene glycol tetraacetic acid (EGTA) resulted in a larger increase of enzymatic activity in males than in females, especially in the presence of ATP. A differential reaction to kinase inhibitors was also observed between males and females (i.e. a larger increase in aromatase activity in females than in males after exposure to specific inhibitors). These findings suggest that the nature of aromatase is conserved between the sexes, although the control of its activity by calcium appears to be different. Additional characterizations of intracellular calcium in both sexes would therefore be appropriate to better understand aromatase regulation. [less ▲]

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See detailUne solution numérique au test de Cattell pour déterminer le nombre de composantes principales à retenir
Raîche, Gilles; Magis, David ULiege; Walls, Theodore et al

in Raîche, Gilles; Paquette-Côté, Karine; Magis, David (Eds.) Des mécanismes pour assurer la validité de l’interprétation de la mesure en éducation. Tome 1 : la mesure. (2011)

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See detailNon-pharmacological management of osteoporosis: a consensus of the Belgian Bone Club
Body, J. J.; Bergmann, P.; Boonen, S. et al

in Osteoporosis International (2011), 22(11), 2769-88

This consensus article reviews the various aspects of the non-pharmacological management of osteoporosis, including the effects of nutriments, physical exercise, lifestyle, fall prevention, and hip ... [more ▼]

This consensus article reviews the various aspects of the non-pharmacological management of osteoporosis, including the effects of nutriments, physical exercise, lifestyle, fall prevention, and hip protectors. Vertebroplasty is also briefly reviewed. Non-pharmacological management of osteoporosis is a broad concept. It must be viewed as an essential part of the prevention of fractures from childhood through adulthood and the old age. The topic also includes surgical procedures for the treatment of peripheral and vertebral fractures and the post-fracture rehabilitation. The present document is the result of a consensus, based on a systematic review and a critical appraisal of the literature. Diets deficient in calcium, proteins or vitamin D impair skeletal integrity. The effect of other nutriments is less clear, although an excessive consumption of sodium, caffeine, or fibres exerts negative effects on calcium balance. The deleterious effects of tobacco, excessive alcohol consumption and a low BMI are well accepted. Physical activity is of primary importance to reach optimal peak bone mass but, if numerous studies have shown the beneficial effects of various types of exercise on bone mass, fracture data as an endpoint are scanty. Fall prevention strategies are especially efficient in the community setting, but less evidence is available about their effectiveness in preventing fall-related injuries and fractures. The efficacy of hip protectors remains controversial. This is also true for vertebroplasty and kyphoplasty. Several randomized controlled studies had reported a short-term advantage of vertebroplasty over medical treatment for pain relief, but these findings have been questioned by recent sham-controlled randomized clinical studies. [less ▲]

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See detailMaintenance of antifracture efficacy over 10 years with strontium ranelate in postmenopausal osteoporosis
Reginster, Jean-Yves ULiege; Kaufman, J. M.; Devogelaer, J. P. et al

in Arthritis and Rheumatism (2011), 63(S10), 436

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See detailGlucosamine sulfate for structure modification in osteoarthritis : fact of fantasy ?
Reginster, Jean-Yves ULiege

in Ortopedia, Traumatologia, Rehabilitacja (2011), 13(S1), 44

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See detailAvis des entraîneurs belges francophones sur leur formation. Approche quantitative
Theunissen, Catherine ULiege; Cloes, Marc ULiege

in Spallanzani, Carlo; Goyette, Robert; Roy, Martin (Eds.) et al Mieux former pour agir dans une société en mouvement (2011)

L'origine de cette recherche est liée à une étude précédente (Theunissen, 2007) consacrée à la formation des entraîneurs en Communauté française de Belgique. Dans la première, une étude qualitative ... [more ▼]

L'origine de cette recherche est liée à une étude précédente (Theunissen, 2007) consacrée à la formation des entraîneurs en Communauté française de Belgique. Dans la première, une étude qualitative analysait l'avis d'entraîneurs débutants à propos de la formation dispensée au sein de leur fédération sportive. La présente étude consiste à travailler à une plus grande échelle fin d'obtenir une vision beucoup plus globale de la situation en interrogeant des entraîneurs de toutes disciplines et de tous niveaux confondus. [less ▲]

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See detailCrossing abilities of ALS Target-Site Resistant Black-grass (Alopecurus myosuroides HUDS.)
Maréchal, Pierre-Yves ULiege; Henriet, François; Vancutsem, Françoise ULiege et al

in Communications in Agricultural and Applied Biological Sciences (2011)

Black-grass crossings were conducted outdoor for two successive years in a way to determine the percentage of resistant black-grass that can be engendered in one generation, after the introduction of one ... [more ▼]

Black-grass crossings were conducted outdoor for two successive years in a way to determine the percentage of resistant black-grass that can be engendered in one generation, after the introduction of one Target-Site resistant individual. After germination, plants were genotyped and couples of resistant and susceptible individuals were formed, then planted outdoor and enclosed with a pollen-proof cloth to avoid any external pollen contamination. Seeds were collected and tested in glasshouses with herbicide spraying. DNA analyses were also performed on surviving plants to distinguish hetero- from homozygotes. The resistance level of the progeny seems to be fairly high and Mendelean distribution is generally confirmed. The offspring of self-crossings was also observed to assess the facultative autogamy ability, according to the genotype and the presence of mutant ALS alleles (position W-574). [less ▲]

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See detailEuropese rechtspraak : actualia/Actualia, Rechtspraak Grondwettelijk Hof
Durviaux, Ann-Lawrence ULiege

in Marchés et Contrats Publics = Overheidsopdrachten en -Overeenkomsten (2011), 1/2011

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See detailLe droit de la construction à la croisée des chemins
Kohl, Benoît ULiege

in Revue de la Faculté de Droit de l'Université de Liège (2011)

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See detail3D XFEM-based modeling of retraction for preoperative image update.
Vigneron, Lara M.; Warfield, Simon K.; Robe, Pierre ULiege et al

in Computer aided surgery : official journal of the International Society for Computer Aided Surgery (2011), 16(3), 121-34

Outcomes for neurosurgery patients can be improved by enhancing intraoperative navigation and guidance. Current navigation systems do not accurately account for intraoperative brain deformation. So far ... [more ▼]

Outcomes for neurosurgery patients can be improved by enhancing intraoperative navigation and guidance. Current navigation systems do not accurately account for intraoperative brain deformation. So far, most studies of brain deformation have focused on brain shift, whereas this paper focuses on the brain deformation due to retraction. The heart of our system is a 3D nonrigid registration technique using a biomechanical model driven by the deformations of key surfaces tracked between two intraoperative images. The key surfaces, e.g., the whole-brain region boundary and the lips of the retraction cut, thus deform due to the combination of gravity and retractor deployment. The tissue discontinuity due to retraction is handled via the eXtended Finite Element Method (XFEM), which has the appealing feature of being able to handle arbitrarily shaped discontinuity without any remeshing. Our approach is shown to significantly improve the alignment of intraoperative MRI. [less ▲]

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See detailUtilisation des micro-ondes pour la conversion hydrolytique de la biomasse lignocellulosique
Richel, Aurore ULiege; Paquot, Michel ULiege

in Chimie Nouvelle (2011), 108

The use of microwave is described as a non conventional and original heating source for both pretreatment and hydrolysis of lignocellulosic agroresources into high added value materials. Advantages of ... [more ▼]

The use of microwave is described as a non conventional and original heating source for both pretreatment and hydrolysis of lignocellulosic agroresources into high added value materials. Advantages of this approach are presented in terms of reduced reaction times and improved selectivities and yields. The limitations of this technology are also evaluated. [less ▲]

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See detailOrganic farming in Wallonia : situation and perspectives
Burny, Philippe ULiege

in Petrescu-Mag, Ruxandra-Malina; Petrescu, Dacinia Crina; Burny, Philippe (Eds.) Environmental issues in the context of sustainable development (2011)

The paper describes the recent evolution of organic farming in Wallonia. The share of organic farmers in the total number of farms in Wallonia now reaches 5%, which is also the proportion of organic ... [more ▼]

The paper describes the recent evolution of organic farming in Wallonia. The share of organic farmers in the total number of farms in Wallonia now reaches 5%, which is also the proportion of organic agricultural land in the total agricultural area. The financial support of public authorities, through direct payments or services like research, extension, advertisement, is essential for the maintenance or development of the Wallonian organic sector. This support is not granted for the future, but can be expected. [less ▲]

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