References of "2011"
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See detailEvaluation of chicory seeds maturity by chlorophyll fluorescence imaging
Ooms, David ULg; Destain, Marie-France ULg

in Biosystems Engineering (2011), 110

Chicory (Cichorium intybus L.) seed production includes sorting to remove foreign materials and non-viable seeds. A machine vision system was developed to monitor the fluorescence in order to detect the ... [more ▼]

Chicory (Cichorium intybus L.) seed production includes sorting to remove foreign materials and non-viable seeds. A machine vision system was developed to monitor the fluorescence in order to detect the immature chicory seeds. It comprised a monochromatic light source, a highpass filter and a monochromatic CCD camera sensitive to red and infrared. With this device, blue light reflected by the seeds was blocked whilst red fluorescence was measured by the camera. A segmentation algorithm was designed to estimate separately the fluorescence intensities of the pappus, a crown of scales, and the main body of the pericarp. Experiments were carried out on five clones of cross-pollinated chicory plants used for seed production. Two hundred flower heads were labelled at flowering and harvested at different times during the maturation process expressed in “days after flowering” (DAF). Germination tests were performed according to the recommendations of the International Seed Testing Association to measure the germination percentage (GP) and the germination rate (GR), an indicator of seed vigour. Seed chlorophyll content diminished during maturation following a different logistic trend for the pappus and the pericarp. The GP increased from 18 DAF to reach its maximum value at 21 DAF, but the GR remained low until 30 DAF and increased afterwards. The potential of chlorophyll fluorescence to be used as an indicator of chicory seed vigour was the greatest between 21 and 36 DAF. [less ▲]

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See detailLes enjeux de la sécurité alimentaire en RD Congo : approche par l'analyse de la consommation alimentaire des ménages kinois
Muteba Kalala, Damien ULg; Duquesne, Brigitte; Lebailly, Philippe ULg

in Brot, Jean (Ed.) XXVIèmes Journées scientifiques ATM "Crises et soutenabilité du développement" : 2-3-4 juin, BETA CNRS Université du Strasbourg (2011)

Afin d'appréhender la problématique de la sécurité alimentaire en République Démocratique du Congo, différents dispositifs de recherche ont été mis en place au départ d'un groupe de recherche ... [more ▼]

Afin d'appréhender la problématique de la sécurité alimentaire en République Démocratique du Congo, différents dispositifs de recherche ont été mis en place au départ d'un groupe de recherche interdisciplinaire en appui à la politique, financé par la coopération belge (DGCD/CUD) : Groupe de Recherche en Appui à la Politique pour l'Agriculture et l'Alimentation en Afrique (GRAP 3 A). Cet article présente l'un des axes de ce programme de recherche interuniversitaire mené conjointement avec des chercheurs de l'Université de Kinshasa : une approche de l'insécurité alimentaire et de stratégies d'une politique alimentaire durable à partir de l'étude de la consommation alimentaire des ménages de Kinshasa par différentes enquêtes qui se poursuivront au cours des quatre prochaines années. [less ▲]

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See detailProceedings of the 1st Scientific Meeting of the Faculty of Veterinary Medicine (Liège – Belgium)
Cabaraux, Jean-François ULg; Delguste, Catherine ULg; Frippiat, Thibault ULg et al

Book published by Presses de la Faculté de Médecine vétérinaire de l’Université de Liège (2011)

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See detailEl astronauta en el mesón
Ceballos Viro, Alvaro ULg

in Juan PÉREZ ZÚÑIGA, Seis días fuera del mundo (Viaje inoluntario) / Sei giorni fuori dal mondo (Viaggio involontario) (2011)

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See detailL'islamophobie sur Internet
Jamin, Jérôme ULg

Article for general public (2011)

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See detailModel-based cardiovascular monitoring of large pore hemofiltration during endotoxic shock in pigs
Revie, JA; Stevenson, DJ; Chase, JG et al

in Critical Care (2011), 15 (Suppl 1)

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See detailVictimes et justice pénale: les défis d'une cohabitation difficile.
Lauwaert, Katrien ULg

in Revue de la Faculté de Droit de l'Université de Liège (2011), (n°2), 291-295

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See detailWell Shaped Mn(3)O(4) Nano-octahedra with Anomalous Magnetic Behavior and Enhanced Photodecomposition Properties
Li, Yu; Tan, Haiyan; Yang, Xiao-Yu et al

in Small : Nano Micro (2011), 7(4), 475-483

Very uniform and well shaped Mn(3)O(4) nano-octahedra are synthesized using a simple hydrothermal method under the help of polyethylene glycol (PEG200) as a reductant and shape-directing agent. The nano ... [more ▼]

Very uniform and well shaped Mn(3)O(4) nano-octahedra are synthesized using a simple hydrothermal method under the help of polyethylene glycol (PEG200) as a reductant and shape-directing agent. The nano-octahedra formation mechanism is monitored. The shape and crystal orientation of the nanoparticles is reconstructed by scanning electron microscopy and electron tomography, which reveals that the nano-octahedra only selectively expose {101} facets at the external surfaces. The magnetic testing demonstrates that the Mn(3)O(4) nano-octahedra exhibit anomalous magnetic properties: the Mn(3)O(4) nano-octahedra around 150 nm show a similar Curie temperature and blocking temperature to Mn(3)O(4) nanoparticles with 10 nm size because of the vertical axis of [001] plane and the exposed {101} facets. With these Mn(3)O(4) nano-octahedra as a catalyst, the photodecomposition of rhodamine B is evaluated and it is found that the photodecomposition activity of Mn(3)O(4) nano-octahedra is much superior to that of commercial Mn(3)O(4) powders. The anomalous magnetic properties and high superior photodecomposition activity of well shaped Mn(3)O(4) nano-octahedra should be related to the special shape of the nanoparticles and the abundantly exposed {101} facets at the external surfaces. Therefore, the shape preference can largely broaden the application of the Mn(3)O(4) nano-octahedra. [less ▲]

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See detailPont aux ânes
Dupont, Pascal ULg

in Courtois, Luc (Ed.) Mémoires de Wallonie : Les rues de Louvain-la-Neuve racontent... (2011)

A short note about Pythagoras' theorem.

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See detailSartre (Jean-Paul)
Cormann, Grégory ULg

in Marzano, Michela (Ed.) Dictionnaire de la violence (2011)

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See detailSur le théorème de Mamikon
Bair, Jacques ULg; Henry, Valérie ULg

in Losanges (2011), 12

Cet article donne un aperçu de l'analyse mathématique visuelle, mise au point par Mnatsakanian et Apostol. Cette théorie permet notamment de calculer de manière élémentaire des aires de régions planes ... [more ▼]

Cet article donne un aperçu de l'analyse mathématique visuelle, mise au point par Mnatsakanian et Apostol. Cette théorie permet notamment de calculer de manière élémentaire des aires de régions planes sans faire appel aux techniques du calcul intégral. [less ▲]

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See detailVers l'extension de l'effet positif de la chose jugée au profit d'un tiers à la décision de justice?
Boularbah, Hakim ULg

in Revue de Droit Commercial Belge [= RDC] = Tijdschrift voor Belgisch Handelsrecht [=TBH] (2011)

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See detailSquatting test: A posture to study and counteract cardiovascular abnormalities associated with autonomic dysfunction.
PHILIPS, Jean-Christophe ULg; SCHEEN, André ULg

in Autonomic neuroscience : basic & clinical (2011)

The squatting test is an active posture manoeuvre that imposes one of the most potent orthostatic stresses. In normal subjects, the changes in blood pressure and heart rate are transient because of ... [more ▼]

The squatting test is an active posture manoeuvre that imposes one of the most potent orthostatic stresses. In normal subjects, the changes in blood pressure and heart rate are transient because of appropriate baroreflex homeostasis and do not provoke symptoms. However, in various pathological conditions, both the increase in blood pressure during squatting and the decrease in blood pressure during standing may be more important and sustained, potentially leading to complaints and adverse events. Squatting has been used to evaluate patients with tetralogy of Fallot, heart transplant, dysautonomia, including diabetic cardiovascular autonomic neuropathy, and individuals prone to vasovagal syncope. Careful analysis of changes in blood pressure and heart rate during the transition from standing to squatting and from squatting to standing allows the early detection of altered vagal and/or sympathetic function. Of note squatting position has been proposed as a therapeutic means to counteract the fall in blood pressure in patients suffering from dizziness due to dysautonomia and orthostatic hypotension or presenting pre-syncope symptoms, such as soon after exercise. The aims of the present review are to analyse the haemodynamic pattern during a squatting test in various pathological situations and to describe what may be the negative and positive haemodynamic changes associated with this posture. We were especially interested in using the squatting test for the assessment of cardiovascular autonomic neuropathy associated with diabetes mellitus. [less ▲]

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See detail3D XFEM-based modeling of retraction for preoperative image update.
Vigneron, Lara M.; Warfield, Simon K.; Robe, Pierre ULg 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 detailUn nouveau volume de l'Atlas linguistique de la Wallonie (ALW): famille, vie et relations sociales
Baiwir, Esther ULg

in Wallonnes : Chronique de la Société de Langue et de Littérature Wallonnes (2011), 2

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See detailIl manoscritto di Santa Caterina
Deweert, Willy; Ricciardi, Stefania ULg

Book published by Rizzoli (2011)

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See detailQu’est-ce que la polysémie ? Vers une nouvelle définition de la polysémie
Steffens, Marie ULg

in Langues et linguistique (2011)

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See detailMaterial behavior of the hexagonal alpha phase of a titanium alloy identified from nanoindentation tests
Gerday, Anne-Françoise ULg; Ben Bettaieb, Mohamed ULg; Duchene, Laurent ULg et al

in European Journal of Mechanics A : Solids (2011), 30

This article focuses on the numerical modeling of nanoindentation tests performed on the hexagonal a phase of Ti-5553 alloy in order to identify its mechanical behavior. The main goal consists in ... [more ▼]

This article focuses on the numerical modeling of nanoindentation tests performed on the hexagonal a phase of Ti-5553 alloy in order to identify its mechanical behavior. The main goal consists in determining the relative strength of the slip modes in the a phase of Ti-5553. This work was performed using an elastoviscoplastic crystal plasticity-based constitutive law. The difficulties in determining the slip systems that can be activated and their corresponding critical resolved shear stresses (CRSS) are discussed. Numerical predictions are compared to experimental nanoindentation curves. [less ▲]

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