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See detailInfluence of the temperature on the tensile behaviour of a modified 9Cr–1Mo T91 martensitic steel
Keller, Clément ULg; Margulies, Monique; Hadjem-Hamouche, Zehoua et al

in Material Science and Engineering A (2010), 527

The tensile behaviour of a modified 9Cr–1Mo T91 martensitic steel is investigated for temperatures between 300 and 700 K. Loading/unloading tensile tests are carried out to investigate the evolution of ... [more ▼]

The tensile behaviour of a modified 9Cr–1Mo T91 martensitic steel is investigated for temperatures between 300 and 700 K. Loading/unloading tensile tests are carried out to investigate the evolution of the tensile flow parameters and the different flow stress components with temperature. An increase in temperature reduces the ductility and the ultimate tensile stress. Three different deformation mechanisms are operative depending on the temperature. These mechanisms are discussed in terms of activation volume, dislocation motion and dynamic strain ageing. [less ▲]

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See detailIncidence of sport injuries in elite young athletes of the Grand-duchy of Luxembourg
Frisch, Anne ULg; Urhausen, A.; Seil et al

in Buys, R.; Buerkers, M.; Daly, D. (Eds.) Programma boek final of the 12th International ACAPS Conference (2010)

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See detailLa motivations des arrêts de la cour d'assises et son contrôle.
Jacobs, Ann ULg

in Revue de Jurisprudence de Liège, Mons et Bruxelles (2010), 10/450(36), 1719

Observations sur l'arrêt de la Cour de cassation cassant les arrêts attaqués rendus le 12 février 2010, sous les n° 7 et 8 du répertoire, par la cour d'assises de la province de Namur

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See detailMatériaux composites
Courard, Luc ULg

Learning material (2010)

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See detailDummy run and conformity indices in the ongoing EORTC low-grade glioma trial 22033-26033: First evaluation of quality of radiotherapy planning
Musat, E.; Roelofs, E.; Bar-Deroma, R. et al

in Radiotherapy & Oncology (2010), 95(2), 218-224

Purpose: Early assessment of radiotherapy (RT) quality in the ongoing EORTC trial comparing primary temozolomide versus RT in low-grade gliomas. Materials and methods: RT plans provided for dummy cases ... [more ▼]

Purpose: Early assessment of radiotherapy (RT) quality in the ongoing EORTC trial comparing primary temozolomide versus RT in low-grade gliomas. Materials and methods: RT plans provided for dummy cases were evaluated and compared against expert plans. We analysed: (1) tumour and organs-at-risk delineation, (2) geometric and dosimetric characteristics, (3) planning parameters, compliance with dose prescription and Dmax for OAR (4) indices: RTOG conformity index (CI), coverage factor (CF), tissue protection factor (PF); conformity number (CN = PF× CF); dose homogeneity in PTV (U). Results: Forty-one RT plans were evaluated. Only two (5%) centres were requested to repeat CTV-PTV delineations. Three (7%) plans had a significant under-dosage and dose homogeneity in one deviated > 10%. Dose distribution was good with mean values of 1.5, 1, 0.68, and 0.68 (ideal values = 1) for CI, CF, PF, and CN, respectively. CI and CN strongly correlated with PF and they correlated with PTV. Planning with more beams seems to increase PTV Dmin, improving CF. U correlated with PTV Dmax. Conclusion: Preliminary results of the dummy run procedure indicate that most centres conformed to protocol requirements. To quantify plan quality we recommend systematic calculation of U and either CI or CN, both of which measure the amount of irradiated normal brain tissue. © 2010 Elsevier Ireland Ltd. All rights reserved. [less ▲]

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See detailLa portée critique de l'analyse des idées d'existence et de néant
Caeymaex, Florence ULg

in François, Arnaud (Ed.) L'évolution créatrice de Bergson (2010)

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See detailCompte rendu de PLOTIN, "Traités 45-50", traductions sous la direction de Luc BRISSON et Jean-François PRADEAU
Gavray, Marc-Antoine ULg

in International Journal of the Platonic Tradition (2010), 4(1-2), 89-91

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See detailIdentification of Fragmentation Channels of Dinucleotides Using Deuterium Labeling.
Balbeur, D.; Dehareng, Dominique ULg; De Pauw, Edwin ULg

in Journal of the American Society for Mass Spectrometry (2010), 21(1), 23-33

The fragmentation of the totally deuterated dinucleotide dAT(-) in labile positions (heteroatom-bound hydrogens) was compared for different MS/MS methods: CID, IRMPD, and EID. These experiments allowed us ... [more ▼]

The fragmentation of the totally deuterated dinucleotide dAT(-) in labile positions (heteroatom-bound hydrogens) was compared for different MS/MS methods: CID, IRMPD, and EID. These experiments allowed us to affirm the coexistence of several fragmentation channels. They can be classified according to the involvement of nonlabile or labile protons in the fragmentation process. Moreover, double resonance experiments were performed in IRMPD and EID. They demonstrated the existence of consecutive fragmentation processes. The probability with which each channel is taken depends on the fragmentation technique used, i.e., the energy and the time scale of the method. The fragmentation channels that involve labile protons requiring peculiar three-dimensional structures are entropically unfavorable and enthalpically favorable. They are more observed in IRMPD and EID. The involvement of labile and, therefore, exchangeable protons in the fragmentation mechanism casts doubt on the use of tandem mass spectrometry to localize incorporated deuteriums in oligonucleotides. [less ▲]

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See detailIntérêt d'une prise en charge multidisciplinaire ambulatoire semi-intensive dans la lombalgie chronique
Demoulin, Christophe ULg; Grosdent, Stéphanie ULg; capron, Lucile et al

in Revue du Rhumatisme (2010), 77

Objectifs. – Cette étude souhaite apprécier l’efficacité d’un programme pluridisciplinaire ambulatoire semi-intensif, élaboré en fonction des exigences des organismes mutualistes belges et destiné aux ... [more ▼]

Objectifs. – Cette étude souhaite apprécier l’efficacité d’un programme pluridisciplinaire ambulatoire semi-intensif, élaboré en fonction des exigences des organismes mutualistes belges et destiné aux patients lombalgiques chroniques. Méthodes. – Parmi 262 patients souffrant de lombalgie chronique non spécifique inclus dans cette étude, 136 (73 femmes et 63hommes présentant des douleurs depuis 11,3 ans en moyenne) ont achevé un programme ambulatoire (36 séances de deux heures) comportant une éducation à l’économie rachidienne, une approche ergonomique et psychologique ainsi que des séances de reconditionnement physique. Trois séances (initiale [séance 1], intermédiaire (séance 18) et finale [séance 36]) évaluent les paramètres d’intensité de la douleur, d’incapacité fonctionnelle, de kinésiophobie, de connaissances cognitives et gestuelles ainsi que les performances physiques (force et endurance des muscles du tronc, mobilité du complexe lombo-pelvi-fémoral, endurance cardiorespiratoire). Résultats. – Tous les paramètres sont significativement améliorés lors de l’évaluation finale : diminution de l’intensité de la douleur (−44 %), des répercussions fonctionnelles (−40 %) et de la kinésiophobie (−11 %), amélioration des connaissances (+59 %) et de la gestuelle vertébrale (+95 %), augmentation de la force des muscles du tronc (+40 % en moyenne), de l’endurance des extenseurs du tronc (+90 %), de la mobilité (+8 %) et de l’endurance cardiorespiratoire (+18 %). Conclusions. – Une prise en charge pluridisciplinaire ambulatoire semi-intensive s’avère bénéfique pour les patients lombalgiques chroniques. Une adaptation des critères d’inclusion et une implication accrue du patient dans sa rééducation contribueraient à améliorer l’observance du programme. [less ▲]

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See detailEndogenous Growth in an OLG Model with a Fixed Factor
Artige, Lionel ULg

E-print/Working paper (2010)

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See detailIconographies de saints mosans : Liège, Archives de l’Evêché St-Amand de Jupille
George, Philippe ULg

in Bulletin de la Société Royale Le Vieux-Liège (2010)

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See detailModeling of a Magnetic Shunt and an Aluminum Screen Using the Perturbation Finite Element Method
Ferreira da Luz, Mauricio V.; Dular, Patrick ULg; V Sabariego, Ruth ULg et al

in Proceedings of the 14th Biennial IEEE Conference on Electromagnetic Field Computation (CEFC2010) (2010)

In this paper the perturbation technique is developed for modeling of the magnetic shunt and an aluminum screen in large power transformers. The problem is first studied using either a simplified ... [more ▼]

In this paper the perturbation technique is developed for modeling of the magnetic shunt and an aluminum screen in large power transformers. The problem is first studied using either a simplified analytical or a finite element model. A more elaborated model is then defined to take into account its structural details. The calculation of iron losses and of the minimum clearance between bus bars leading current and magnetizable steel parts for a frequency range is performed. The modeling takes into account the eddy currents in magnetic shunt laminations due to the magnetic field in the shunt. [less ▲]

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See detailPigments from the Middle Palaeolithic levels of Es-Skhul (Mount Carmel, Israel)
d'Errico, Francesco; Salomon, Hélène ULg; Vignaud, Colette et al

in Journal of Archaeological Science (2010), 37

Discovery of pigments at Middle Palaeolithic sites is of interest in the context of the ongoing debate about the tempo and mode of the emergence of modern human behaviour. Here we analyse four previously ... [more ▼]

Discovery of pigments at Middle Palaeolithic sites is of interest in the context of the ongoing debate about the tempo and mode of the emergence of modern human behaviour. Here we analyse four previously undescribed fragments of pigmental material from Es-Skhul shelter, layer B, Israel, McCown excavations, identified at the Department of Palaeontology, Natural History Museum, London. One of them is still partially embedded in the hard breccia characteristic of this layer. Inspection of breccia fragments from layer B has led to the identification of small pieces of red and orange pigmental material still enclosed in large clasts, further corroborating the attribution of the larger pieces analysed in this study to layer B. The four objects are studied using optical microscopy, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy Dispersive X-ray (EDX), X-ray micro-diffraction (m-XRD), Particle-Induced X-Ray Emission Spectrometry (PIXE), and Proton-Induced Gamma-ray Emission (PIGE). The specimens display various hues of yellow, orange, red, and one of them presents a gradual variation of shade from yellow to dark orange. SEM/EDX analysis identifies two specimens (Skhul 1 and 2) as being composed of iron-rich calcium phosphate, the third (Skhul 3) of potassium-rich clay with titanium-rich iron oxide inclusions, and the fourth (Skhul 4) of pure iron oxide crystals. TEM/ EDX and m-XRD analysis demonstrate that three pieces (Skhul 1, 2 and 4) were heated to at least 300 C, a process that has partially or completely dehydrated goethite into haematite and changed their pristine yellow colour into orange or red. Skhul 3 shows no sign of heating, suggesting that its haematite content has a geological origin. The different mineral composition of the pieces suggests that they must come from a variety of sources. This implies that the associated collection strategies included the selection of materials that differed not only with respect to colour but also with respect to other physical and chemical properties. Although no formal proof exists that these lumps of pigmental material were deliberately heated, results obtained are consistent with this explanation. [less ▲]

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See detailPET imaging of tumor neovascularization in a transgenic mouse model with a novel 64Cu-DOTA-knottin peptide.
Nielsen, Carsten H; Kimura, Richard H; WITHOFS, Nadia ULg et al

in Cancer Research (2010), 70(22), 9022-30

Due to the high mortality of lung cancer, there is a critical need to develop diagnostic procedures enabling early detection of the disease while at a curable stage. Targeted molecular imaging builds on ... [more ▼]

Due to the high mortality of lung cancer, there is a critical need to develop diagnostic procedures enabling early detection of the disease while at a curable stage. Targeted molecular imaging builds on the positive attributes of positron emission tomography/computed tomography (PET/CT) to allow for a noninvasive detection and characterization of smaller lung nodules, thus increasing the chances of positive treatment outcome. In this study, we investigate the ability to characterize lung tumors that spontaneously arise in a transgenic mouse model. The tumors are first identified with small animal CT followed by characterization with the use of small animal PET with a novel 64Cu-1,4,7,10-tetra-azacylododecane-N,N',N'',N'''-tetraacetic acid (DOTA)-knottin peptide that targets integrins upregulated during angiogenesis on the tumor associated neovasculature. The imaging results obtained with the knottin peptide are compared with standard 18F-fluorodeoxyglucose (FDG) PET small animal imaging. Lung nodules as small as 3 mm in diameter were successfully identified in the transgenic mice by small animal CT, and both 64Cu-DOTA-knottin 2.5F and FDG were able to differentiate lung nodules from the surrounding tissues. Uptake and retention of the 64Cu-DOTA-knottin 2.5F tracer in the lung tumors combined with a low background in the thorax resulted in a statistically higher tumor to background (normal lung) ratio compared with FDG (6.01+/-0.61 versus 4.36+/-0.68; P<0.05). Ex vivo biodistribution showed 64Cu-DOTA-knottin 2.5F to have a fast renal clearance combined with low nonspecific accumulation in the thorax. Collectively, these results show 64Cu-DOTA-knottin 2.5F to be a promising candidate for clinical translation for earlier detection and improved characterization of lung cancer. [less ▲]

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See detailL’édition pour la jeunesse en Belgique francophone : de la nécessité faite vertu à la mondialisation
Habrand, Tanguy ULg

in Pinhas, Luc; Foucault, Jean; Manson, Michel (Eds.) L'édition de jeunesse francophone face à la mondialisation (2010)

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See detailStructures in Fire. Proceedings of the Sixth International Conference
Kodur, Venkatesh; Franssen, Jean-Marc ULg

Book published by DEStech Publications, Inc (2010)

These proceedings contains 122 papers. The covered topics are: steel structures, concrete structures, composite structures, timber structures, connections and fire safety engineering and practice.

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See detailA grid for a precise analysis of daily activities
Wojtasik, Vinciane ULg; Olivier, Catherine ULg; Lekeu, Françoise ULg et al

in Neuropsychological Rehabilitation (2010), 20

Assessment of daily living activities is essential in patients with Alzheimer's disease. Most current tools quantitatively assess overall ability but provide little qualitative information on individual ... [more ▼]

Assessment of daily living activities is essential in patients with Alzheimer's disease. Most current tools quantitatively assess overall ability but provide little qualitative information on individual difficulties. Only a few tools allow therapists to evaluate stereotyped activities and record different types of errors. We capitalised on the Kitchen Activity Assessment to design a widely applicable analysis grid that provides both qualitative and quantitative data on activity performance. A cooking activity was videotaped in 15 patients with dementia and assessed according to the different steps in the execution of the task. The evaluations obtained with our grid showed good correlations between raters, between versions of the grid and between sessions. Moreover, the degree of independence obtained with our analysis of the task correlated with the Kitchen Activity Assessment score and with a global score of cognitive functioning. We conclude that assessment of a daily living activity with this analysis grid is reproducible and relatively independent of the therapist, and thus provides quantitative and qualitative information useful for both evaluating and caring for demented patients. [less ▲]

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