References of "2003"
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See detailInfluence du contenu et des modalités d'évaluation sur les indicateurs d'équité
Lafontaine, Dominique ULg; Monseur, Christian ULg

in Actes du 16e colloque international de l'Admée-Europe, Liège, 4-6 septembre 2003 (2003)

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See detailBasalt weathering laws and the impact of basalt weathering on the global carbon cycle
Dessert, C.; Dupre, B.; Gaillardet, J. et al

in Chemical Geology (2003), 202(3-4), 257-273

This study attempts to characterise the chemical weathering of basalts and to quantify the flux of carbon transferred from the atmosphere to the ocean during this major process at the surface of the Earth ... [more ▼]

This study attempts to characterise the chemical weathering of basalts and to quantify the flux of carbon transferred from the atmosphere to the ocean during this major process at the surface of the Earth. To this aim, we have compiled different published chemical compositions of small rivers draining basalts. Basaltic river waters are characterised by relatively high Na-normalized molar ratios (Ca/Na: 0.2-3.9; HCO3/Na: 1-10; Mg/Na: 0.15-6) in comparison with those usually observed for river draining silicates. The data also show the climatic influence on basalt weathering and associated CO2 consumption. Runoff and temperature are the main parameters controlling the chemical weathering rate and derived CO2 consumption during basaltic weathering. From these relationships and digital maps, we are able to define the contribution of basalts to the global silicate flux. Taking account of this result, we estimate that the CO2 flux consumed by chemical weathering of basalts is about 4.08 x 10(12) mol/year. The fluxes from the islands of Indonesia and regions of central America represent around 40% of this flux. The global flux of CO2 consumed by chemical weathering of basalts represents between 30% and 35% of the flux derived from continental silicate determined by Gaillardet et al. [Chem. Geol. 159 (1999) 3]. Finally, it appears that volcanic activity not only acts as a major atmospheric CO2 source, but also creates strong CO2 sinks that cannot be neglected to better understand the geochemical and climatic evolution of the Earth. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailRivers, chemical weathering and Earth's climate
Dupre, B.; Dessert, C.; Oliva, P. et al

in Comptes Rendus Geoscience (2003), 335(16), 1141-1160

We detail the results of recent studies describing and quantifying the large-scale chemical weathering of the main types of continental silicate rocks: granites and basalts. These studies aim at ... [more ▼]

We detail the results of recent studies describing and quantifying the large-scale chemical weathering of the main types of continental silicate rocks: granites and basalts. These studies aim at establishing chemical weathering laws for these two lithologies, describing the dependence of chemical weathering on environmental parameters, such as climate and mechanical erosion. As shown within this contribution, such mathematical laws are of primary importance for numerical models calculating the evolution of the partial pressure of atmospheric CO2 and the Earth climate at geological timescales. The major results can be summarized as follow: (1) weathering of continental basaltic lithologies accounts for about 30% of the total consumption of atmospheric CO2 through weathering of continental silicate rocks. This is related to their high weatherability (about eight times greater than the granite weatherability); (2) a simple weathering law has been established for basaltic lithologies, giving the consumption of atmospheric CO2 as a function of regional continental runoff, and mean annual regional temperature; (3) no such simple weathering law can be proposed for granitic lithologies, since the effect of temperature can only be identified for regions displaying high continental runoff; (4) a general law relating mechanical erosion and chemical weathering has been validated on small and large catchments. The consequences of these major advances on the climatic evolution of the Earth are discussed. Particularly, the impacts of the onset of the Deccan trapps and the Himalayan orogeny on the global carbon cycle are reinvestigated. (C) 2003 Academie des sciences. Published by Elsevier SAS. All rights reserved. [less ▲]

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See detailEfficient algorithmic approach for mixed lubrication in cold rolling
STEPHANY, A.; Ponthot, Jean-Philippe ULg; COLLETTE, C. et al

in Proceedings of AMPT 2003, Advances in Materials and Processing Technologies (2003)

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See detailSound as Sense: Contemporary Us Poetry &/In Music
Delville, Michel ULg; Pagnoulle, Christine ULg

Book published by P.I.E./Peter Lang (2003)

It has often been claimed that writing about music is like dancing about architecture. The general distrust of methods that combine or aggregate knowledge from different research fields, and therefore ... [more ▼]

It has often been claimed that writing about music is like dancing about architecture. The general distrust of methods that combine or aggregate knowledge from different research fields, and therefore tend to elide or smooth out some of their particularities, may account for the paucity of critical writing dealing not only with the role of voice and song in poetry but also with the history of the interdependencies of verbal, textual and musical materials in the broader context of contemporary American literature. The purpose of this book is to develop an informed and imaginative understanding of the interrelationships between poetry and music in a way that reflects the diversity and richness of contemporary artistic practice in the US since the beginning of the 20th century. Related topics such as theories of representation, the aesthetics of rhythm, the material production of literature and music, the links between poetry, politics and popular culture, the making of music from literary texts,or literature from musical models, all provide the focus for a study that deals with the theoretical and practical interrelationships between poetry and music. [less ▲]

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See detailNecessity to compare bacterial transcription factor beyond the HTH motif
Rigali, Sébastien ULg

Scientific conference (2003)

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See detailAn Integrated Software for Scantling Optimization and Least Production Cost
Rigo, Philippe ULg

in Ship Technology Research = Schiffstechnik (2003)

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See detailBelgian Report to the IAG-subcommission “EUREF”
Bruyninx, Carine; Defraigne, Pascale; Ducarme, Bernard et al

in Proceedings of EUREF 2002 Symposium (2003)

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See detailL'évaluation des troubles de la mémoire dans le cadre de l'expertise médico-légale
Meulemans, Thierry ULg

in Meulemans, Thierry (Ed.) Evaluation et prise en charge des troubles mnésiques (2003)

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See detailQu'il est long le chemin vers l'équité...
Lafontaine, Dominique ULg

in L'école, dans quel(s) sens ? Actes du 2e Congrès des chercheurs en éducation, Louvain-la-Neuve, 12-13 mars 2002 (2003)

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See detailCompte-rendu de "La parola al testo. Scritti per Bice Mortara Garavelli"
Benzoni, Pietro ULg

in Stilistica e metrica italiana (2003), III(3), 316-320

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See detailCell cycle duration at the time of maternal zygotic transition for in vitro produced bovine embryos: effect of oxygen tension and transcription inhibition.
Lequarré, Anne-Sophie ULg; Marchandise, J.; Massip, A. et al

in Biology of Reproduction (2003), 69(5), 1707-13

Early embryonic cleavages are mostly regulated by maternal components then control of development progressively depends on newly synthesized zygotic products. The timing of the first cleavages is a way to ... [more ▼]

Early embryonic cleavages are mostly regulated by maternal components then control of development progressively depends on newly synthesized zygotic products. The timing of the first cleavages is a way to assess embryo quality. The goal of this study was to evaluate the duration of the fourth cell cycle, at the time of maternal-to-zygotic transition (MZT) in in vitro-produced bovine embryos by means of cinematographic analysis. We found that 75% of the embryos displayed a long fourth cycle (43.5 +/- 5.4 h) whereas the remaining embryos had a very short fourth cell cycle (8.9 +/- 2.9 h). Both groups did not differ in cleavage rhythm up to the eight-cell stage and timing of cavitation and blastocyst expansion was identical. However, embryos with a short fourth cell cycle had a better blastocyst rate than embryos with a long cycle (59% versus 38%, P < 0.01). Total cell number, inner cell mass (ICM):total cell ratio, and hatching rate were identical for blastocysts produced from embryos with either a long or a short fourth cell cycle. In a second experiment, we showed that increasing the oxygen tension, from 5% to 20%, decreased the percentage of embryos with a short fourth cell cycle, from 25% to 11% (P < 0.01), indicating that suboptimal culture conditions can influence the length of this cycle. Finally, we investigated whether fourth cell cycle duration could be influenced by transcription inhibition. With alpha-amanitin added at 18 h postinsemination (HPI), cleavage was reduced (66% versus 79%) and, at 70 HPI, the 9- to 16-cell rate increased (50% versus 25%) concomitantly with a 5- to 8-cell rate decrease (16% versus 47%). A similar pattern was observed when the drug was added at 6 HPI or 42 HPI but not at 0 HPI. Cinematographic analysis revealed that alpha-amanitin increased the first cell cycle duration whereas the second and third cell cycles were not affected. With the drug, one third of the embryos could develop up to the 9- to 16-cell stage and they all had a short fourth cell cycle (11.2 +/- 3.7 h) with a good synchrony of cleavage between blastomeres. These results suggest that duration of the fourth cell cycle of bovine embryo, during the MZT, is under a zygotic transcriptional control that can be affected by oxidative conditions. [less ▲]

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See detailHeidegger et la question de la chose. Esquisse d'une lecture interne
Dewalque, Arnaud ULg

Book published by L'Harmattan (2003)

By rejecting the traditional concepts of substance and object, Heidegger has reconsidered the ontological problem of "objecthood". This book examines the various analyses he has devoted to this problem ... [more ▼]

By rejecting the traditional concepts of substance and object, Heidegger has reconsidered the ontological problem of "objecthood". This book examines the various analyses he has devoted to this problem through the concept of "thing" (das Ding). [less ▲]

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See detailL’insuffisance mitrale chez le cheval : revue de littérature.
Maurin, Emmanuel; Amory, Hélène ULg; Sandersen, Charlotte ULg

in Pratique Vétérinaire Equine (2003), 35

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See detailPropriétés des merrains affinés dans une solution d’enzymes naturels et destinés à la tonnellerie
Jourez, Benoît ULg; Charron, Stéphane; Hebert, Jacques ULg

in Annals of Forest Science : a Multidisciplinary and International Journal (2003), 60

Properties of shooks ageing by a treatment in a solution of natural enzymes. A speeding up of the ageing of shooks is possible by a treatment with a solution of natural enzymes. However its repercussion ... [more ▼]

Properties of shooks ageing by a treatment in a solution of natural enzymes. A speeding up of the ageing of shooks is possible by a treatment with a solution of natural enzymes. However its repercussion on physical, mechanical characteristics of wood and on its absorption potential of an hydro-alcoholic solution must be tested. Normalized samples have been extracted from 150 shooks selected on a ring width criteria from three cooperages located on different supplying area in France. The three factors cooperage, ring width class and treatment are used for statistical analysis. The cooperage factor, reflection of the supply area of each of them, affect the young modulus and the modulus of rupture in static bending but not the other characteristics. The improvement of the wood properties is closely linked to the ring width increaseof the samples. The enzymatic treatment has no significant effect on physical and mechanical characteristics of oak wood, except on the hardness and, to a lesser extent, on the absorption potential. Considering the absence of negative effect on characteristics of shooks and the positive contribution of enzymatic treatment on their ageing, this treatment could bring a very interesting economical alternative permitting to avoid long lasting storage of the shooks before assembly. [less ▲]

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See detailDevelopment path and capital structure of belgian biotechnology firms
Bastin, Veronique; Corhay, Albert ULg; Hübner, Georges ULg et al

in Butzen, Paul (Ed.) Firms' investment and finance decisions: Theory and empirical methodology (2003)

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