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See detailInnovative development and validation of an HPLC/DAD method for the qualitative and quantitative determination of major cannabinoïds in cannabis plant material
De Backer, Benjamin ULg; Debrus, Benjamin ULg; Lebrun, Pierre ULg et al

Poster (2009, August)

GC is commonly used for the analysis of cannabis samples, e.g. in forensic chemistry. However, as this method is based on heating of the sample, acidic forms of cannabinoids are decarboxylated into their ... [more ▼]

GC is commonly used for the analysis of cannabis samples, e.g. in forensic chemistry. However, as this method is based on heating of the sample, acidic forms of cannabinoids are decarboxylated into their neutral counterparts. Converely, HPLC permits the determination of the original composition of plant cannabinoids by direct analysis. Several HPLC methods have been described in the literature, but most of them failed to separate efficiently all the cannabinoids or were not validated according to general guidelines. By use of an innovative methodology for modelling chromatographic responses, a simple and accurate HPLC/DAD method was develop [less ▲]

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See detailRhétorique
Provenzano, François ULg

in Grassin, Jean-Marie (Ed.) Dictionnaire international des termes littéraires [en ligne] (2009)

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See detailPratiques réflexives en didactique des Langues et littératures modernes à l'ULg : description, évaluation, perspectives.
Simons, Germain ULg; Delbrassine, Daniel ULg; Pagnoul, Pierre ULg et al

in Puzzle (2009), (26), 20-27

Dans cet article, nous définissons d'abord brièvement la notion de "réflexion sur l'action" et soulignons l'intérêt d'une telle démarche dans la formation initiale des enseignants. Ensuite, nous décrivons ... [more ▼]

Dans cet article, nous définissons d'abord brièvement la notion de "réflexion sur l'action" et soulignons l'intérêt d'une telle démarche dans la formation initiale des enseignants. Ensuite, nous décrivons, commentons et évaluons les différentes activités que nous avons conçues pour amener les étudiants de l'AESS/du Master à finalité didactique en Langues et littératures modernes de l'ULg à devenir des "praticiens réflexifs" (Schön, 1988) ou du moins à s'approcher de cet idéal. Enfin, nous proposons quelques pistes pour améliorer le dispositif mis en place. [less ▲]

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See detailOn input-to-output stability of switched non-exponentially stable nonlinear systems
Efimov, Denis ULg; Panteley, Elena; Loria, Antonio

in Proc. European Control Conference, Budapest (2009)

The problem of input-to-output stability for switched nonlinear systems is considered. Two approaches for switching between non-exponentially stable systems are proposed guaranteeing input-to-output ... [more ▼]

The problem of input-to-output stability for switched nonlinear systems is considered. Two approaches for switching between non-exponentially stable systems are proposed guaranteeing input-to-output stability for the switched system. [less ▲]

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See detailHybrid robust observers for locally Lipschitz systems
Bobtsov, Alexey; Efimov, Denis ULg

in Proc. European Control Conference, Budapest (2009)

State observer design procedure is proposed for nonlinear locally Lipschitz systems. Possible presence of disturbances is taken into account. The solution is based on logic-based control approach ... [more ▼]

State observer design procedure is proposed for nonlinear locally Lipschitz systems. Possible presence of disturbances is taken into account. The solution is based on logic-based control approach applicable to nonlinear systems with bounded solutions. [less ▲]

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See detailComparison of bovine colostrum whey and defatted bovine colostrum supplementation on piglet post-weaning growth check
Boudry, Christelle ULg; Gauthier, Vincent ULg; Buldgen, André

in Book of the Abstracts of the 60th Annual Meeting of the European Association for Animal Production (2009, August)

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See detailEffect of bovine colostrums of 1st, 2nd and 3rd milking on growth performance and the immune system of newly-weaned piglets after an E. coli LPS challenge
Gauthier, Vincent ULg; Boudry, Christelle ULg; Buldgen, André

in Book of the Abstracts of the 60th Annual Meeting of the European Association for Animal Production (2009, August)

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See detailExtreme coronagraphy with an adaptive hologram: Simulations of exo-planet imaging
Ricci, Davide ULg; Le Coroller, Hervé; Labeyrie, Antoine

in Astronomy and Astrophysics (2009), 503

Aims. We present a solution to improve the performance of coronagraphs for the detection of exo-planets. Methods. We simulate numerically several kinds of coronagraphic systems, with the aim of evaluating ... [more ▼]

Aims. We present a solution to improve the performance of coronagraphs for the detection of exo-planets. Methods. We simulate numerically several kinds of coronagraphic systems, with the aim of evaluating the gain obtained with an adaptive hologram. Results. The detection limit in flux ratio between a star and a planet (Fs /Fp ) observed with an apodized Lyot coronagraph characterized by wavefront bumpiness imperfections of λ/20 (resp. λ/100) turns out to be increased by a factor of 10^3.4 (resp. 10^5.1 ) when equipped with a hologram. Conclusions. This technique could provide direct imaging of an exo-Earth at a distance of 11 parsec with a 6.5 m space telescope such as the JWST with the optical quality of the HST. [less ▲]

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See detailPercutaneous transvenous mitral annuloplasty: initial human experience with a novel coronary sinus implant device.
Sack, S.; Kahlert, P.; Bilodeau, L. et al

in Circulation Cardiovascular Interventions (2009), 2(4), 277-84

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See detailDo Higher Education syllabi and oral course introduction affect student’s motivation to study ? Measuring the impact of syllabi from specifically trained Faculties on students’ perceptions of controllability, course value and competency
Leduc, Laurent ULg

Conference (2009, August)

As defined by Altman and Cashin (1992), “the primary purpose of a syllabus is to communicate to one’s students what the course is about, why the course is taught, where it is going, and what will be ... [more ▼]

As defined by Altman and Cashin (1992), “the primary purpose of a syllabus is to communicate to one’s students what the course is about, why the course is taught, where it is going, and what will be required of the students for them to complete the course with a passing grade”. According to several authors, one of the functions of the syllabus is to motivate students: it “conveys enthusiasm for the subject and sparks student interest and motivation” (Hammons & Shock, 1994), “warm syllabi explain expectations in a clear and friendly fashion, encourage and motivate students” (Slattery & Carlson, 2005), “the course syllabus should generate interest and motivate students to take responsability to learn the contents of the course” (Johnson, 2006), “we studied teachers who have enormous success in helping and encouraging their students to achieve remarkable learning and found they usually produce a certain kind of syllabus” (Bain, 2004). Some researchers (Thompson, 2007) have also pointed out different oral strategies used by teachers when presenting their courses for the first time to students in order to positively affect them on this aspect. But the question is: can this very early written / oral transmission of information really impact students’motivation for learning in some courses? In the University of Liège, professors have to submit every year for each of their courses a one page (at least) standardized syllabus (called engagement pédagogique). In addition, they usually start their first lesson with introductory speeches that plays the same role. In 2008, IFRES (Institute for Training and Research in Higher Education) has delivered pedagogical training and guidelines to new faculties in order to promote these two kinds of motivating communications especially with their freshmen and sophomores audiences. As the person in charge with that training, I focused on Viau’s model of motivation dynamics (1997). The specific suggestions I gave consisted in taking into account various kinds of students’ perceptions (1) of competency (“a perception that a student has about him(her)self and through which he/she assesses his/her ability to suitably accomplish an activity that he/she is not sure to carry off”), (2) of controlability (“the perception of the control that a student has on the course of an activity and on its consequences”) and (3) of activities value (“the opinion that a student expresses on the interest and the usefulness of a pedagocical activiy according to the goals he/she pursues”) in one’s written and oral communication with students about pedagogical and practical aspects of a course. At the beginning of the academic year following the delivery of those guidelines and training sessions, the wording of syllabi and oral speeches produced by 10 of those new faculties was analysed from their motivational potential’s point of view. In the same time, questionnaires were submitted to the 1400 students of their 12 introductory courses, in order to investigate the corollary impact of those information transmissions on learners’ motivational dynamics. Before and after their reception of the oral and written messages from their respective teachers, student’s levels of perception concerning the value of the course, concerning their own competency to succeed in it and concerning their controlability, have been compared in order to measure hypothetical gains due to syllabi and face-to-face course introduction. We have studied relations between students who have actualy read / not read syllabi, or who have actually listened / not listened to oral presentation of the course, and their level of perception of Viau’s three motivational factors. Other relations between variables like students’ perceptions of their own teacher (resulting from the content and tone of his/her messages) or the presence / absence of a rationale for some particular items of information have also been studied. [less ▲]

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See detailLiver transplantation (LT) from donation after cardiac death (DCD) donors: Multicenter Belgian experience 2003-2007
Detry, Olivier ULg; Donckier, Vincent; Lucidi, Valerio et al

in Transplant International (2009, August), 22(S2), 62-234

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See detailExploring the Holocene through fossil cyanobacterial sequences from Antarctic lake sediments.
Fernandez Carazo, Rafael ULg; Waleron, Krzysztof; Hodgson, Dominic et al

Poster (2009, July 27)

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See detailBaseline data on cyanobacterial diversity near the new Princess Elizabeth Antarctic research station.
Fernandez Carazo, Rafael ULg; Namsaraev, Zorigto; Ertz, Damien et al

Poster (2009, July 27)

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See detailP2P Implications on Web Surfing
Merciadri, Luca ULg

E-print/Working paper (2009)

P2P (Peer-to-Peer) technology comprises various ways to exchange information rapidly, each participant sharing a portion of his own resources. Anyway, despite of the numerous advantages of using P2P, a ... [more ▼]

P2P (Peer-to-Peer) technology comprises various ways to exchange information rapidly, each participant sharing a portion of his own resources. Anyway, despite of the numerous advantages of using P2P, a real problem is often encountered when using cheap internet connections: web surfing becomes so slow that it seems impossible to reach a web page, for the P2P’s user. It is especially the case when using connections with a low upload speed. The problem has also an importance, even if it is minor, when using high-speed connections (VDSL, ... ), as it is also a waste of capacity. [less ▲]

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See detailLow-viscosity allophanates having actinically hardenable groups
Detrembleur, Christophe ULg; Weikard, Jan; Richter, Frank et al

Patent (2009)

Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter ... [more ▼]

Die vorliegende Erfindung betrifft niedrigviskose Umsetzungsprodukte von Polyisocyanaten, die aktivierte unter Einwirkung aktinischer Strahlung mit ethylenisch ungesättigten Verbindungen unter Polymerisation reagierende Gruppen enthalten, ein Verfahren zu ihrer Herstellung sowie deren Verwendung in Beschichtungsmitteln. [less ▲]

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