Browsing
     by title


0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

or enter first few letters:   
OK
Full Text
See detailFormation et services à la Communauté
Nondonfaz, Robert ULg

Article for general public (2010)

Importance pour une université de mettre aussi l'accent sur l'aspect "Service à la Communauté" en particulier en dispensant une information générale et une formation continuée

Detailed reference viewed: 7 (0 ULg)
Full Text
See detailFormation initiale des enseignants à l'éveil scientifique: comment en faire une occasion d'apprentissage pour tous?
Beckers, Jacqueline ULg; Simons, Germain; Crahay, Marcel ULg et al

in Beckers, Jacqueline; Crahay, Marcel (Eds.) Approche par compétences et réduction des inégalités d'apprentissage entre élèves : de l'analyse des situations scolaires à la formation de enseignants (2011)

L'approche par compétences en sciences prônée par le décret nécessite de travailler la démarche scientifique en classe de façon complète : poser une question, formuler une hypothèse, chercher des ... [more ▼]

L'approche par compétences en sciences prônée par le décret nécessite de travailler la démarche scientifique en classe de façon complète : poser une question, formuler une hypothèse, chercher des résultats, expérimentaux ou non, exploiter ces résultats et conclure provisoirement. Cette façon de travailler est complexe et la façon dont l'enseignant va mettre en oeuvre les choses peut engendrer ou non des inégalités d'un élève à l'autre. Cet article est le récit d'une formation initiale d'enseignants du primaire. [less ▲]

Detailed reference viewed: 121 (18 ULg)
See detailFormation initiale et développement professionnel des enseignants : quel rôle de l'évaluation ?
Beckers, Jacqueline ULg

in Paquay, Léopold; Van Nieuwenhoven, Catherine; Wouters, Pascale (Eds.) L'évaluation, levier du développement professionnel ? Tensions, dispositifs, perspectives (2010)

Detailed reference viewed: 63 (10 ULg)
Full Text
See detailLa formation littéraire à l'école primaire
Dumortier, Jean-Louis ULg

in Vivre le primaire (2010), 23 (n°1)

Detailed reference viewed: 26 (1 ULg)
Full Text
See detailFormation littéraire et compétences. Notes pour un débat.
Dumortier, Jean-Louis ULg

E-print/Working paper (2009)

Detailed reference viewed: 56 (6 ULg)
See detailFormation mathématique par la résolution de problèmes
Bair, Jacques ULg; Haesbroeck, Gentiane ULg

Book published by De Boeck Université (2000)

Entre manuel scolaire et traité d'heuristique, illustré de centaines d'exemples variés, significatifs et souvent inédits, cet ouvrage présente une démarche originale de résolution de problèmes ... [more ▼]

Entre manuel scolaire et traité d'heuristique, illustré de centaines d'exemples variés, significatifs et souvent inédits, cet ouvrage présente une démarche originale de résolution de problèmes mathématiques. [less ▲]

Detailed reference viewed: 67 (1 ULg)
Full Text
Peer Reviewed
See detailFormation mechanism of Y-junctions in arrays of multi-walled carbon nanotubes
Zilli, Dario; Blacher, Silvia ULg; Cukierman, Ana Lea et al

in Colloids and Surfaces A : Physicochemical and Engineering Aspects (2008), 327(1-3), 140-143

Transmission electron microscopy of arrays of multi-walled carbon nanotubes reveals the presence of numerous Y-junctions. The diameter distributions of the samples are found to be bimodal, with one mode ... [more ▼]

Transmission electron microscopy of arrays of multi-walled carbon nanotubes reveals the presence of numerous Y-junctions. The diameter distributions of the samples are found to be bimodal, with one mode corresponding to the branches and the other mode to the trunk of the Y-junctions. The analysis of the micrographs shows that the junctions form via the merger of metal particles during the tip-growth of the tubes. (C) 2008 Elsevier B.V. All rights reserved. [less ▲]

Detailed reference viewed: 101 (40 ULg)
Full Text
Peer Reviewed
See detailFormation of Giant Luminous Arcs and Arclets Using an Optical Gravitational Lens Experiment
Surdej, Jean ULg; Refsdal, S.; Pospieszalska-Surdej, Anna ULg

in Kochanek, C. S.; Hewitt, Jacqueline N (Eds.) Astrophysical applications of gravitational lensing, Proceedings of the 173rd Symposium of the International Astronomical Union (1996)

Not Available

Detailed reference viewed: 46 (13 ULg)
Full Text
Peer Reviewed
See detailFormation of long-wavelength chlorophyllide (Chlide695) is required for the assembly of Photosystem II in etiolated barley leaves
Franck, Fabrice ULg; Eullaffroy, P.; Popovic, R.

in Photosynthesis Research (1997), 51(2), 107-118

Chlorophyll(ide) spectroscopic properties and Photosystem II assembly, monitored by 77 K variable fluorescence, were studied in etiolated barley leaves as a function of the extent of protochlorophyllide ... [more ▼]

Chlorophyll(ide) spectroscopic properties and Photosystem II assembly, monitored by 77 K variable fluorescence, were studied in etiolated barley leaves as a function of the extent of protochlorophyllide photoreduction by a single millisecond light flash of different intensities. Variable fluorescence, measured 2 hours after the flash, was only detected when the extent of phototransformation was higher than a threshold value of 0.4. Its development paralleled the formation of a chlorophyll emission component at 685 nm, which itself derived from long-wavelength chlorophyllide with an emission maximum at 695 nm. At low flash intensities, short-wavelength chlorophyllide forms preferentially accumulated and no Photosystem II fluorescence was detected after 2 hours. Chlorophyllide esterification was independent of the extent of phototransformation. These results suggested that the formation of long-wavelength chlorophyllide was essential for further assembly of Photosystem II. This interpretation was strengthened by the observed inhibition of both long-wavelength chlorophyllide formation and of variable fluorescence development in leaves treated with 6-aminolevulinic acid or in untreated leaves subjected to repeated flashes of low intensity. [less ▲]

Detailed reference viewed: 9 (0 ULg)
Full Text
Peer Reviewed
See detailFormation of micropores in a DS Ni-Ti-C alloy
Ji, Daoxin; Lecomte-Beckers, Jacqueline ULg; Habraken, Louis

in Proceedings Conference on High Temperature Alloys Gas Turbines (1982)

The aim of this experiment was to examine the formation of micropores during directional solidification of a Ni--5Ti--0.2C alloy in order to determine their precise origin and to verify some nearly ... [more ▼]

The aim of this experiment was to examine the formation of micropores during directional solidification of a Ni--5Ti--0.2C alloy in order to determine their precise origin and to verify some nearly developed theoretical formulae. A further aim is to elicit the factors responsible for the occurrence of the defects which seriously impair the mechanical properties of certain alloys. The technique of quenched directionally solidified rods was used in order to follow the development of solidification. The results show that solidification conditions influence microporosities formation through the fraction of eutectic and this suggests that it is possible to relate susceptibility to microporosity formation to the fraction of eutectic. The results also confirm that for solid solution alloys such as Ni--5Ti--0.2C, the fraction of eutectic increases when the ratio G/R (G: temp. gradient in mushy zone; R: solidification rate) decreases as described in the mathematical model developed. [less ▲]

Detailed reference viewed: 37 (2 ULg)
Peer Reviewed
See detailFormation of N2,3-ethanoguanine in DNA after in vitro treatment with the therapeutic agent, N-(2-chloroethyl)-N'-cyclohexyl-N-nitrosourea
Habraken, Yvette ULg; Carter, C.; Kirk, M. et al

in Carcinogenesis (1990), 11(2), 223-228

Detailed reference viewed: 4 (0 ULg)
Peer Reviewed
See detailThe Formation of National Elites de A. Kappeler (ed.)
Martiniello, Marco ULg

in Ethnic and Racial Studies (1995), 18(2), 421-422

Detailed reference viewed: 19 (0 ULg)
Peer Reviewed
See detailFormation of nick instabilities due to particle clustering along crystal interfaces
Vandewalle, Nicolas ULg; Ausloos, Marcel ULg; Cloots, Rudi ULg

in Physical Review. E : Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics (1997), 56(4), 4042-4047

The kinetic growth of crystal grains is simulated on a square lattice in the presence of mobile particles. The model is based on the Eden and the dynamic epidemic models. Trapping of the particles by the ... [more ▼]

The kinetic growth of crystal grains is simulated on a square lattice in the presence of mobile particles. The model is based on the Eden and the dynamic epidemic models. Trapping of the particles by the advancing front and a short-range repulsion of the particles by the front are both allowed. The grain boundary morphology is studied through the kink density concept and the spatial distribution of particles is discussed. Indeed, the clustering of particles along the crystal edges is found to induce the formation of so-called nick instabilities at the liquid-solid interface. The particles, when trapped near such instabilities, occur as oblique filamentary structures in the crystal matrix, just like river networks. These findings agree with recent experimental observations. The numerical laws are also explained by theoretical arguments based on different characteristic lengths. [less ▲]

Detailed reference viewed: 8 (0 ULg)
Full Text
Peer Reviewed
See detailFormation of P Cygni line profiles in relativistically expanding atmospheres
Hutsemekers, Damien ULg; Surdej, Jean ULg

in Astrophysical Journal (1990), 361

The probabilistic approach of Surdej (1979) is followed to generalize the Sobolev (1958) formalism to the case of special relativity, in order to interpret accurately the P Cygni line profiles observed in ... [more ▼]

The probabilistic approach of Surdej (1979) is followed to generalize the Sobolev (1958) formalism to the case of special relativity, in order to interpret accurately the P Cygni line profiles observed in the spectrum of broad absorption-line quasars and supernovae. The expressions of the source function and of the line profile are derived, and it is shown that the relativistic P Cygni line profiles are significantly different from those computed in the framework of the classical theory. Thus, for increasing values of the terminal wind velocity, the red emission wing becomes definitely narrower than the blue one, while the line center emission increases. This is no longer symmetrical in accordance with the relativistic expression of the Doppler effect. [less ▲]

Detailed reference viewed: 16 (4 ULg)
Full Text
Peer Reviewed
See detailFormation of P Cygni Line Profiles in Relativistically Expanding Atmospheres. II. The Effect of the Continuum Frequency Shape and Limb Darkening of the Core
Hutsemekers, Damien ULg

in Astrophysical Journal (1993), 417

Abstract image available at: http://adsabs.harvard.edu/abs/1993ApJ...417...97H

Detailed reference viewed: 7 (2 ULg)
Full Text
Peer Reviewed
See detailFormation of P Cygni profiles with limb darkening of the stellar core
Surdej, Jean ULg

in Astrophysics & Space Science (1981), 79

In the framework of the Sobolev approximation, the effects of limb darkening of the stellar core on the formation of line profiles in rapidly expanding envelopes are investigated. For the case of outward ... [more ▼]

In the framework of the Sobolev approximation, the effects of limb darkening of the stellar core on the formation of line profiles in rapidly expanding envelopes are investigated. For the case of outward-accelerating envelopes, it is shown that the P Cygni profiles, calculated with and without limb darkening, do appear almost identical as long as the size of the envelope remains large with respect to the radius of the star. As the extent of the envelope decreases, the resulting profiles are found to differ appreciably close to the line center. When considering outward-decelerating (or equivalently inward-accelerating) envelopes, calculations with the limb darkening effects reveal that the P Cygni profiles are more strongly affected than in the previous case. These effects are specially important in the blue wing and near the center of the resulting line profiles, irrespective of the size of the envelope. [less ▲]

Detailed reference viewed: 51 (0 ULg)
Full Text
Peer Reviewed
See detailFormation Of Plant Cuticle: Evidence For The Occurrence Of The Peroxygenase Pathway
Lequeu, J.; Fauconnier, Marie-Laure ULg; Chammai, A. et al

in Plant Journal (The) (2003), 36(2),

Detailed reference viewed: 10 (3 ULg)
Full Text
Peer Reviewed
See detailFormation of polyamide 12-polyisoprene core-shell particles in polystyrene by reactive blending
Koulic, Christian; François, G.; Jérôme, Robert ULg

in Macromolecules (2004), 37(14), 5317-5322

Polyamide 12 (PA12)-polyisoprene (PIP) particles with a thermoplastic core and a rubbery shell have been prepared in a thermoplastic matrix (PS) by reactive blending. For this purpose, an anhydride-end ... [more ▼]

Polyamide 12 (PA12)-polyisoprene (PIP) particles with a thermoplastic core and a rubbery shell have been prepared in a thermoplastic matrix (PS) by reactive blending. For this purpose, an anhydride-end-capped PS-b-PIP diblock (PS-b-PIP-anh) has been reacted with PA12 chains end-capped (50% of them) by a primary amine and dispersed in PS. A PS-b-PIP-PA12 triblock has been formed at the interface between the PS matrix and the dispersed PA12 microdomains. Thus, the phase morphology consists of PA12 core-PIP shell particles dispersed in PS. The nonreacted PA12 with respect to PS-b-PIP-anh dictates the size of the polyamide (core) domains, and the reactive diblock (mainly the molecular weight of the PIP block) imposes the shell thickness and modulates the core size by its capacity to compatibilize PA12 and the thermoplastic matrix. [less ▲]

Detailed reference viewed: 40 (3 ULg)