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See detailRéappropriation et réapparition. Survivances de Vertigo
Mélon, Marc-Emmanuel ULg

Conference (2010, May)

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See detailRearrangement of 1-alkynyltrialkylaluminates
Debuigne, Antoine ULg; Gérard, Julien; Hevesi, Làszlò

Poster (1999, December 02)

Detailed reference viewed: 8 (1 ULg)
See detailRearrangement of 1-alkynyltrialkylaluminates
Debuigne, Antoine ULg; Gérard, J.; Hevesi, Laszlo

Poster (2000, July 14)

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See detailRearrangement of 1-alkynyltrialkylaluminates
Debuigne, Antoine ULg; Gérard, Julien; Hevesi, Làszlò

Poster (1999, July 19)

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See detailReasoning about Infinite Computations
Vardi, Moshe Y.; Wolper, Pierre ULg

in Information & Computation (1994), 115(1), 1-37

We investigate extensions of temporal logic by connectives defined by finite automata on infinite words. We consider three different logics, corresponding to three different types of acceptance conditions ... [more ▼]

We investigate extensions of temporal logic by connectives defined by finite automata on infinite words. We consider three different logics, corresponding to three different types of acceptance conditions (finite, looping, and repeating) for the automata. It turns out, however that these logics all have the same expressive power and that their decision problems are all PSPACE-complete. We also investigate connectives defined by alternating automata and show that they do not increase the expressive power of the logic or the complexity of the decision problem. (C) 1994 Academic Press, Inc. [less ▲]

Detailed reference viewed: 52 (0 ULg)
See detailReasoning of winter wheat mineral fertilisation. Nitrogen cycling and leaching in cool and wet regions of Europe
Bodson, Bernard ULg; Falisse, André

in Symposium COST 814 (1992, October 22)

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See detailA Reasoning System of Ternary Projective Relations
Clementini, Eliseo; Skiadopoulos, Spiros; Billen, Roland ULg et al

in IEEE Transactions on Knowledge & Data Engineering (2010), 22(2), 161-178

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See detailReasoning versus knowledge retention and ascertainment throughout a problem-based learning curriculum
Collard, Anne ULg; Gelaes, Sabine ULg; Vanbelle, Sophie ULg et al

in Medical Education (2009), 43

CONTEXT: Since 2000, problem-based learning (PBL) seminars have been introduced into the curriculum of medical studies at the University of Liège. We aimed to carry out a cross-sectional investigation of ... [more ▼]

CONTEXT: Since 2000, problem-based learning (PBL) seminars have been introduced into the curriculum of medical studies at the University of Liège. We aimed to carry out a cross-sectional investigation of the maturational increase in biomedical reasoning capacity in comparison with factual knowledge retention throughout the curriculum. METHODS: We administered a factual knowledge test (i.e. a true ⁄ false test with ascertainment degree) and a biomedical reasoning test (i.e. an adapted script concordance test [SCT]) to 104 students (Years 3–6) and a reference panel. The selected topic was endocrinology. RESULTS: On the SCT, the students obtained higher scores in Years 5 and 6 than in Years 3 and 4. In Year 3, the scores obtained on SCT questions in a new context indicated transfer of reasoning skills. On the true ⁄ false test, the scores of Year 3 students were significantly higher than those of students in the other three year groups. A positive correlation between SCT scores and true ⁄ false test scores was observed only for students in Years 3 and 4. In each group, the ascertainment degree scores were higher for correct than for incorrect responses and the difference was calculated as an index of self-estimation of core knowledge. This index was found to be positively correlated to SCT scores in the four year groups studied. CONCLUSIONS: Biomedical reasoning skills are evidenced early in a curriculum involving PBL and further increase during training. This is accompanied by a decrease in factual knowledge retention. The self-estimation of core knowledge appears to be related to reasoning capacity, which suggests there is a link between the two processes. [less ▲]

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See detailThe Reasons of Art. Peter Mc Cornick (ed.)
Van Cauwenberge, Geneviève ULg

in Journal of Aesthetics & Art Criticism (1987), (été),

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See detailReassembly of functional nucleoli following in situ unraveling by low-ionic-strength treatment of cultured mammalian cells.
Zatsepina, O. V.; Dudnic, O. A.; Chentsov, Y. S. et al

in Experimental Cell Research (1997), 233(1), 155-68

In order to determine the most persistent components of the nucleolus that might serve as "core" nucleolar elements, we studied the reactivity of nucleoli in living mammalian cells subjected to hypotonic ... [more ▼]

In order to determine the most persistent components of the nucleolus that might serve as "core" nucleolar elements, we studied the reactivity of nucleoli in living mammalian cells subjected to hypotonic buffer saline followed by the incubation of the cells in an isotonic medium. To document as precisely as possible the fine structural changes which occurred, the cells were examined by video-enhanced optical microscopy, fluorescence confocal laser scanning microscopy, and electron microscopy combined with cytochemistry. Light microscopic autoradiography was used to demonstrate the transcriptional characteristics of the reassembled nucleoli. It was shown that all the major compartments of the intact nucleolus could be substantially affected by reduction of the osmolarity of the environmental media. The dynamic events of the nucleolar unraveling in low-salt buffers occurred in the following order: dispersion of the nucleolar pars granulosa, disassociation of the fibrillar complexes into discrete fibrillar centers (FCs) and the dense fibrillar component (DFC), and the almost complete unraveling of the DFC and FCs. At the terminal stages of nucleolar dispersion, the nuclear interior was mainly composed of a loose filamentous meshwork, and none of the typically discerned nucleolar constituents was recognized. Nevertheless, when hypotonically treated cells were returned to isotonic conditions, the nucleolar bodies rapidly began to reassemble. Within 1-2 h of cell incubation under isotonicity, the nucleoli not only became clearly visible, but also reconstituted to their initial size, shape, and position within the nucleus. The ultrastructure and functional activity of the reassembled nucleoli were also found to be fully comparable to those of the untreated controls. These data indicate that the architectural composition of the interphase nucleolus is strictly controlled by the cell. As far as could be determined, none of the usual substructures of the intact nucleolus that could be substituted by complete reassembly of the nucleolar bodies in normotonic conditions, including FCs and the DFC, remained clearly preserved in the terminal stage of nucleolar unraveling. We concluded that the integrity of the nucleolus was mainly preserved by the nuclear or nucleolar matrix system rather than by any other nucleolar structural domains. [less ▲]

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See detailReassessing Multiculturalism in Europe: Belgium
Martiniello, Marco ULg

Scientific conference (2006, June 30)

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See detailReassessing the importance of the colour-singlet contributions to direct $J/ + W$ production at the LHC and the Tevatron
Lansberg, Jean-Philippe ULg; Lorce, Cédric ULg

in Physics Letters B (2013), B726

We show that the colour-singlet contributions to the hadroproduction of $J/\Psi$ in association with a W boson are sizable, if not dominant over the colour-octet contributions. They are of two kinds, $sg ... [more ▼]

We show that the colour-singlet contributions to the hadroproduction of $J/\Psi$ in association with a W boson are sizable, if not dominant over the colour-octet contributions. They are of two kinds, $sg\toJ/\Psi+c+W$ at $\alpha^3s\alpja$ and $q\overline q' \to\gamma^\star /Z ^\star W\to J/\Psi W$ at order $\alpha^3$. These have not been considered in the literature until now. Our conclusion is that the hadroproduction of a $J/\Psi$ in association with a W boson cannot be claimed as a clean probe of the colour-octet mechanism. The rate are small even at the LHC and it will be very delicate to disentangle the colour-octet contributions from the sizable colour-singlet ones and from the possibly large double-parton-scattering contributions. During this analysis, we have also noted that, for reactions such as the production of a $J/\Psi$ by light quark–antiquark fusion, the colour-singlet contribution via an off-shell photon is of the order of the expectation from the colour-octet contribution via an off-shell gluon. This is relevant for inclusive production at low energies close to the threshold. Such an observation also likely extends to other processes naturally involving light-quark annihilation. [less ▲]

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See detailReassessment of Viséan Miospore biostratigraphy in the Amazon basin, northern Brazil.
Loboziak, S; Melo, J.H.G.; Streel, Maurice ULg

in Review of Palaeobotany and Palynology (1998), 104

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See detailLa réathlétisation du LCA
Rodriguez de la Cruz, Carlos ULg; Lehance, Cédric ULg; Namurois, Guy et al

in Abstract book du 7ème Congrès du GIBL (2010, November 27)

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See detailRebeccamycin derivatives as dual DNA-damaging agents and potent checkpoint kinase 1 inhibitors.
Marminon, Christelle; Anizon, Fabrice; Moreau, Pascale et al

in Molecular Pharmacology (2008), 74(6), 1620-9

Rebeccamycin is an indolocarbazole class inhibitor of topoisomerase I. In the course of structure-activity relationship studies on rebeccamycin derivatives, we have synthesized analogs with the sugar ... [more ▼]

Rebeccamycin is an indolocarbazole class inhibitor of topoisomerase I. In the course of structure-activity relationship studies on rebeccamycin derivatives, we have synthesized analogs with the sugar moiety attached to either one or both indole nitrogens. Some analogs, especially those with substitutions at the 6' position of the carbohydrate moiety, exhibit potent inhibitory activity toward checkpoint kinase 1 (Chk1), a kinase that has a major role in the G(2)/M checkpoint in response to DNA damage. Some of these compounds retained a genotoxic activity either through intercalation into the DNA and/or by topoisomerase I-mediated DNA cleavage. We explored the structure-activity relationship between these compounds and their multiple targets. These rebeccamycin derivatives represent a novel class of potential antitumor agents that have a dual effect and might selectively induce the death of cancer cells. [less ▲]

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See detailRebel zonder zaak. Bij 'Voor de dichter Antonin Artaud' van Hugo Claus
Spinoy, Erik ULg

in Lindner, Erik (Ed.) Gedicht, geen gedicht (2007)

This article is a reflection on the radicalism of Claus' poetry. Although Claus was know to be a staunch enemy of Christianity, his subjective position can be constructed to be inspired by the radical ... [more ▼]

This article is a reflection on the radicalism of Claus' poetry. Although Claus was know to be a staunch enemy of Christianity, his subjective position can be constructed to be inspired by the radical 'Paulinian' injunction to 'make everything new'. [less ▲]

Detailed reference viewed: 33 (0 ULg)
See detailLes reboisements en moabi, le cas du village de Medjoh
Semereab, E.; Doucet, Jean-Louis ULg

Conference (2006)

Detailed reference viewed: 36 (14 ULg)
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See detailRebondir. Coronmeuse, un site d'une qualité exceptionnelle
Frankignoulle, Pierre ULg

Article for general public (2013)

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See detailRebound of a confined granular material: combination of a bouncing ball and a granular damper.
Pacheco Vazquez, Felipe ULg; Dorbolo, Stéphane ULg

in Scientific Reports (2013), 3(2158), 10103802158

A ball dropped over a solid surface bounces several times before a complete stop. The bouncing can be reduced by introducing a liquid into the ball; however, the first rebound remains largely unaffected ... [more ▼]

A ball dropped over a solid surface bounces several times before a complete stop. The bouncing can be reduced by introducing a liquid into the ball; however, the first rebound remains largely unaffected by the fluid. Granular materials can also work as dampers. We investigated the rebound of a container partially filled with a given mass of grains mi. During the collision, the kinetic energy of the container is partially transferred to the grains, the rebound is damped, and the fast energy dissipation through inter-particle collisions and friction decreases the bouncing time dramatically. For grain-filled cylinders, a completely inelastic collision (zero rebound) is obtained when mi≥1.5εomc, where εo and mc are the coefficient of restitution and mass of the empty container. For grain-filled spheres, the first rebound is almost undamped, but the second collision is completely inelastic if mi>>mc. These findings are potentially useful to design new granular damping systems. [less ▲]

Detailed reference viewed: 37 (16 ULg)