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
Peer Reviewed
See detailEvolution in African tropical trees displaying ploidy-habitat association: The genus Afzelia (Leguminosae)
Donkpegan, Segbedji ULg; Doucet, Jean-Louis ULg; Migliore, Jérémy et al

in Molecular Phylogenetics & Evolution (2016)

Polyploidy has rarely been documented in rain forest trees but it has recently been found in African species of the genus Afzelia (Leguminosae), which is composed of four tetraploid rain forest species ... [more ▼]

Polyploidy has rarely been documented in rain forest trees but it has recently been found in African species of the genus Afzelia (Leguminosae), which is composed of four tetraploid rain forest species and two diploid dry forest species. The genus Afzelia thus provides an opportunity to examine how and when polyploidy and habitat shift occurred in Africa, and whether they are associated. In this study, we combined three plastid markers (psbA, trnL, ndhF), two nuclear markers (ribosomal ITS and the single-copy PEPC E7 gene), plastomes (obtained by High Throughput Sequencing) and morphological traits, with an extensive taxonomic and geographic sampling to explore the evolutionary history of Afzelia. Both nuclear DNA and morphological vegetative characters separated diploid from tetraploid lineages. Although the two African diploid species were well differentiated genetically and morphologically, the relationships among the tetraploid species were not resolved. In contrast to the nuclear markers, plastid markers revealed that one of the diploid species forms a well-supported clade with the tetraploids, suggesting historical hybridisation, possibly in relation with genome duplication (polyploidization) and habitat shift from dry to rain forests. Molecular dating based on fossil-anchored gene phylogenies indicates that extant Afzelia started diverging c. 14.5 or 20 Ma while extant tetraploid species started diverging c. 7.0 or 9.4 Ma according to plastid and nuclear DNA, respectively. Additional studies of tropical polyploid plants are needed to assess whether the ploidy-habitat association observed in African Afzelia would reflect a role of polyploidization in niche divergence in the tropics. [less ▲]

Detailed reference viewed: 17 (3 ULg)
See detailEvolution in the Sample Preparation for the Measurement of POPs in Biological Matrices
Focant, Jean-François ULg

Scientific conference (2012, August)

Detailed reference viewed: 21 (0 ULg)
Full Text
Peer Reviewed
See detailUne évolution inéluctable
Reginster, Jean-Yves ULg

in Jeune Pratique (1991), 50

Detailed reference viewed: 10 (1 ULg)
Full Text
Peer Reviewed
See detailL’évolution jurisprudentielle des rapports entre permis et droits civils
Delnoy, Michel ULg; Pirson, Alexandre ULg

in Pâques, Michel (Ed.) Chroniques notariales n°57 (2013)

Detailed reference viewed: 30 (1 ULg)
See detailL'évolution jurisprudentielle sur la compétence relative aux projets à la fois privés et publics
Van Damme, Nathalie; Donnay, Luc ULg

in Leleu, Yves-Henri (Ed.) Chroniques notariales (2013)

Detailed reference viewed: 22 (0 ULg)
Full Text
See detailL'évolution jurisprudentielle sur le statut du notaire
Donnay, Luc ULg

in Leleu, Yves-Henri (Ed.) Chroniques notariales (2013)

Detailed reference viewed: 34 (3 ULg)
Peer Reviewed
See detailL'évolution législative et jurisprudentielle du régime des prestations familiales
Kefer, Fabienne ULg; Delooz, Sarah; Dumont, Chloé et al

in Actualité de la sécurité sociale - Evolution législative et jurisprudentielle (2004)

Detailed reference viewed: 91 (6 ULg)
Full Text
Peer Reviewed
See detailEvolution nutritionnelle des patients hémodialysés du CHBAH
Meurice, C.; Smelten, Nicole; Furnemont, L. et al

in Néphrologie & Thérapeutique (2010, September 28), (6), 393-394

La dénutrition touche les patients en hémodialyse surtout lorsqu'ils ont plus de 50 ans et plus de 5 ans de dialyse. En 2006, nous avions observé que les patients dialysés (n = 27) ne consommaient pas le ... [more ▼]

La dénutrition touche les patients en hémodialyse surtout lorsqu'ils ont plus de 50 ans et plus de 5 ans de dialyse. En 2006, nous avions observé que les patients dialysés (n = 27) ne consommaient pas le taux de protéines et de calories recommandé. Depuis, nous avons élargi nos régimes. Cette présente étude évalue l'impact de cette nouvelle attitude nutritionnelle chez les anciens (n=11) et les nouveaux patient (n=10). [less ▲]

Detailed reference viewed: 198 (13 ULg)
Full Text
See detailEvolution nutritionnelle des patients hémodialysés du CHBAH
Meurice, C.; Smelten, Nicole; Furnemont, L. et al

Poster (2010, September 30)

Detailed reference viewed: 32 (6 ULg)
Full Text
Peer Reviewed
See detailEvolution of a dozen non-CO2 greenhouse gases above central Europe since the mid-1980s
Zander, Rodolphe ULg; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

in Environmental Sciences (2005), 2(2-3), 295-303

High-resolution infrared solar observations have been conducted consistently since the mid-1980s at the International Scientific Station of the Jungfraujoch, Switzerland, by the GIRPAS-ULg team (Groupe ... [more ▼]

High-resolution infrared solar observations have been conducted consistently since the mid-1980s at the International Scientific Station of the Jungfraujoch, Switzerland, by the GIRPAS-ULg team (Groupe Infra-Rouge de Physique Atmosphrique et Solaire-University of Lige), and by colleagues from the Belgian Institute for Space Aeronomy and from the Royal Observatory of Belgium, Brussels. These observations were performed with state-of-the-art Fourier transform infrared (FTIR) spectrometers, revealing specific absorption features of over 20 atmospheric gases in the middle-infrared. Related spectrometric analyses have allowed the derivation of their burdens, seasonal and inter-annual variability, as well as their long-term evolution. In addition to updates of long-term changes for CCl2F2, CHClF2, CH4, N2O, SF6, CO, C2H6 and C2H2 already dealt with at previous Non-CO2 Greenhouse Gases (NCGG) symposia, this paper further reports temporal evolutions observed during the past two decades for a series of other source gases, namely OCS, HCN, CCl3F and CCl4, which also have direct or indirect effects on the radiation balance of the troposphere and on the stratospheric ozone layer. [less ▲]

Detailed reference viewed: 57 (8 ULg)
See detailEvolution of a dozen non-CO2 greenhouse gases above Central Europe since the mid-1980s.
Zander, Rodolphe ULg; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

in Proceedings of the 4th International Symposium on Non-CO2 Greenhouse Gases (2006)

Detailed reference viewed: 18 (5 ULg)
Full Text
Peer Reviewed
See detailEvolution of a low density H II region
Manfroid, Jean ULg

in Astronomy and Astrophysics (1977), 58

Abstract image available at: http://cdsads.u-strasbg.fr/abs/1977A&A....58..295M

Detailed reference viewed: 3 (0 ULg)
Full Text
See detailThe Evolution of a Peculiar Stellar Spectrum: Z Andromedae
Swings, Polydore ULg; Struve, Otto

in Herbig, G. H. (Ed.) Spectroscopic Astrophysics: An Assessment of the Contributions of Otto Struve (1970)

Detailed reference viewed: 24 (7 ULg)
Full Text
See detailThe evolution of a peculiar stellar spectrum: Z Andromedae.
Swings, Polydore ULg; Struve, Otto

in Astrophysical Journal (1941), 93

Detailed reference viewed: 4 (0 ULg)
See detailEvolution of anatomical complexity, including an early type of cambium, in Psilophyton-grade plants.
Strullu-Derrien, Marie-Christine; Gensel, Patricia G.; Gerrienne, Philippe ULg

Conference (2010)

Detailed reference viewed: 33 (3 ULg)
Full Text
Peer Reviewed
See detailEvolution of Antarctic Surface Mass Balance by high-resolution downscaling of LMDZ4 AGCM and contribution to sea-level change
Agosta, Cécile ULg; Favier, Vincent; Krinner, Gerhard et al

Conference (2011, March)

Most of the IPCC-AR4 Atmospheric Global Circulation Models (AGCM) predict an increase of the Antarctic Surface Mass Balance (SMB) during the 21st century that would mitigate global sea level rise. Present ... [more ▼]

Most of the IPCC-AR4 Atmospheric Global Circulation Models (AGCM) predict an increase of the Antarctic Surface Mass Balance (SMB) during the 21st century that would mitigate global sea level rise. Present accumulation and predicted change are largest at the ice sheet margins because they are driven by snowfall, which mostly comes from warm, moist air arising over the land slopes. The coastal belt is also where complex processes of sublimation, melt and redistribution by the wind occur. Thus, high-resolution modelling (5 to 15 km) is necessary to adequately capture the effects of small-scale variations in topography on the atmospheric variables in this area, but limitations in computing resources prevent such resolution at the scale of Antarctica in full climate models. We present here a downscaling method leading to 15-km SMB resolution for century time-scales over Antarctica. We compute precipitation fields by considering orographic processes induced by the broad-scale and the fine-scale topography, and we estimate sublimation, melting and refreezing with a surface scheme validated for snow and ice-covered land surface. We display the SMB downscaled from LMDZ4 AGCM outputs (~60-km resolution), and compare the agreement of the broad-scale SMB and the downscaled SMB with 20th century observations. Then, we present hi-resolution features of the Antarctic SMB evolution during the 21st century downscaled from LMDZ4 and discuss the effect of the resolution on the Antarctic SMB contribution to sea level change. The downscaling model is a powerful tool that will be applied to others climate models for a better assessment of future sea level rise. [less ▲]

Detailed reference viewed: 17 (0 ULg)
Full Text
Peer Reviewed
See detailEvolution of anti-eCG antibodies in response to eCG doses and number of injections. Relation with rabbit does productivity
Theau-Clément, M.; Lebas, F.; Beckers, J. F. et al

in Animal (2008), 2(5), 746-751

The aim of this experiment was to study the kinetics of anti-eCG (equine chorionic gonadotrophin) antibodies in relation to eCG dose (8 or 25 IU) and number of injections (n = 11) in comparison with a ... [more ▼]

The aim of this experiment was to study the kinetics of anti-eCG (equine chorionic gonadotrophin) antibodies in relation to eCG dose (8 or 25 IU) and number of injections (n = 11) in comparison with a control group (no injection), and to relate antibody production to sexual receptivity and productivity of rabbit does. In all, 124 lactating primiparous rabbit does were inseminated every 35 days for a year. Just before eCG injection (48 h before insemination), blood samples were collected from all the does to assay anti-eCG antibodies. The anti-eCG antibody binding rate, regardless of the injected dose, shows that none of the does developed detectable anti-eCG antibodies before the 7th injection. The level of detectable anti-eCG antibodies began to show an increase at the 7th injection and was significant only for the 25 IU dose at the 11th injection. At the end of the experiment, 15% and 39% of does treated with 8 and 25 IU, respectively, developed immunity to eCG (binding rate >6%: higher binding rate of the control group). Consequently, the immune response depends on the eCG dose and on the number of injections. Moreover, productivity of does estimated from the number of weaned rabbits produced per insemination is not influenced by the level of eCG antibodies (7.0 and 6.9 for binding rate <6% and binding rate 6%, respectively). Only 19 inseminations (n = 6 and n = 13 for 8 and 25 IU, respectively) were made on hyperimmune does. Consequently, the immune response to eCG seems to be marginal for rabbit does. Moreover, under the described experimental conditions, reproductive performances of hyperimmune does were not affected [less ▲]

Detailed reference viewed: 41 (2 ULg)
Full Text
Peer Reviewed
See detailEvolution of antioxidant capacity during storage of selected fruits and vegetables
Kevers, Claire ULg; Falkowski, Michael; Tabart, Jessica et al

in Journal of Agricultural and Food Chemistry (2007), 55(21), 8596-8603

Interest in the consumption of fresh fruits and vegetables is, to a large extent, due to its content of bioactive nutrients and their importance as dietary antioxidants. Among all of the selected fruits ... [more ▼]

Interest in the consumption of fresh fruits and vegetables is, to a large extent, due to its content of bioactive nutrients and their importance as dietary antioxidants. Among all of the selected fruits and vegetables, strawberries and black grapes have relatively high antioxidant capacities associated with high contents of total phenolic compounds, ascorbic acid, and flavonols. More interesting, the results of this study indicated that in most fruits and vegetables storage did not affect negatively the antioxidant capacity. Better, in some cases, an increase of the antioxidant capacity was observed in the days following their purchase, accompanied by an increase in phenolic compounds. In general, fruits and vegetables visually spoil before any significant antioxidant capacity loss occurs except in banana and broccoli. When ascorbic acid or flavonoids (aglycons of flavonols and anthocyanins) were concerned, the conclusions were similar. Their content was generally stable during storage. [less ▲]

Detailed reference viewed: 108 (14 ULg)