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Peer Reviewed
See detailEffect of feed-, nitrogen-, fibres- and water-intakes on emissions of NH3, N2O, CH4, CO2 and water vapour of grouped gestating sows kept on straw-based deep litter
Philippe, François-Xavier ULiege; Canart, Bernard; Laitat, Martine ULiege et al

in 13th RAMIRAN International Conference, Potential for simple technology solutions in organic management (2008)

Detailed reference viewed: 44 (10 ULiège)
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See detailThe effect of feedback on children’s metacognitive judgments: a heuristic account
Geurten, Marie ULiege; Meulemans, Thierry ULiege

in Journal of Cognitive Psychology (2017), 29(2), 184-201

In three experiments, we investigated whether the feedback effect on the accuracy of children’s metacognitive judgments results from an improvement in monitoring processes or the use of the Anchoring-and ... [more ▼]

In three experiments, we investigated whether the feedback effect on the accuracy of children’s metacognitive judgments results from an improvement in monitoring processes or the use of the Anchoring-and-Adjustment heuristic. Experiment 1 revealed that adding feedback increased the accuracy of young children’s (aged 4, 6, and 8 years) memory prediction. In Experiment 2, the influence of an external anchor on children’s metacognitive judgment was established. Finally, in Experiment 3, two memory tasks that differed in terms of difficulty were administered. Participants were randomly assigned to an anchoring (high/low/no anchor) and a feedback (feedback/no feedback) condition. Results demonstrated that children in the feedback condition adjusted their predictions toward the feedback, regardless of the task’s difficulty. These findings are consistent with the hypothesis that external information provided by feedback is used as an anchor for judgment. This interpretation is strengthened by the correlation found between the two scores computed to assess participants’ susceptibility to anchoring and feedback effects, which indicates that children who are more sensitive to the anchoring effect are also more sensitive to the feedback effect. [less ▲]

Detailed reference viewed: 14 (3 ULiège)
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See detailEffect of feeding lambs with fat rapessed meal on the quality of their depot fat.
Wathelet, Jean-Paul ULiege; Mabon, N.; Marlier, M.

in GCIRC Bulletin (1999)

Detailed reference viewed: 8 (0 ULiège)
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See detailEffect of feeding regimes on growth and survival of Clarias gariepinus larvae: replacement of Artemia by a commercial feed
Vandecan, M.; Diallo, A.; Mélard, Charles ULiege

in Aquaculture Research (2011), 42(5), 733-736

Detailed reference viewed: 126 (26 ULiège)
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See detailEffect of FEM choices in the modelling of incremental forming of aluminium sheets
He, S.; Van Bael, A.; Van Houtte, P. et al

in Banabic, D. (Ed.) Proceedings of the 8th ESAFORM Conference on Material Forming (2005)

This paper investigates the process of single point incremental forming of an aluminium cone with a 50-degree wall angle. Finite element (FE) models are established to simulate the process. Different FE ... [more ▼]

This paper investigates the process of single point incremental forming of an aluminium cone with a 50-degree wall angle. Finite element (FE) models are established to simulate the process. Different FE packages have been used. Various aspects associated with the numerical choices as well as the material and process parameters have been studied. The final geometry and the reaction forces are presented as the results of the simulations. Comparison between the simulation results and the experimental data is also made. [less ▲]

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See detailEffect of Fengycin, a Lipopeptide Produced by Bacillus Subtilis, on Model Biomembranes
Deleu, Magali ULiege; Paquot, Michel ULiege; Nylander, T.

in Biophysical Journal (2008), 94(7), 2667-2679

Detailed reference viewed: 20 (4 ULiège)
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See detailEFFECT OF FENTANYL INFUSION ON MINIMAL ALVEOLAR CONCENTRATION IN ISOFLURANE ANAESTHETISED HORSES – PRELIMINARY RESULTS
Vanaga, Jana; Kovalcuka, Liga; Sandersen, Charlotte ULiege

Poster (2017, April 25)

Detailed reference viewed: 27 (1 ULiège)
Peer Reviewed
See detailEffect of fertilisation with selenium on plasma selenium in Belgian Blue suckling cows and heifers: first results
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Coenen, M. et al

in Land use systems in grassland dominated regions, 20th General Meeting of the European Grassland Federation (2004)

Detailed reference viewed: 7 (3 ULiège)
Peer Reviewed
See detailEffect of fertilisation with selenium on plasma selenium in Belgian Blue suckling cows and heifers: first results
Dufrasne, Isabelle ULiege; Cabaraux, Jean-François ULiege; Coenen, M. et al

in Land use systems in grassland dominated regions, Book of abstracts of 20th General Meeting of the European Grassland Federation (2004)

Detailed reference viewed: 4 (0 ULiège)
Peer Reviewed
See detailEffect of ferulic and β-fluoroferulic isopropylamine salts on solid and liquid cultures of carnation
Kevers, Claire ULiege; Gaspar, T.; Lapierre, C. et al

in Phytochemistry (1990), 29(5), 1543-1545

The isopropylamine salt of ferulic acid and its β-fluoro analogue reduced vitrification symptoms of carnation explants in liquid cultures. Both compounds reduced growth, and peroxidase activity in soluble ... [more ▼]

The isopropylamine salt of ferulic acid and its β-fluoro analogue reduced vitrification symptoms of carnation explants in liquid cultures. Both compounds reduced growth, and peroxidase activity in soluble, membrane, and wall fractions, which might account for their morphogenetic effects. Treatment with the fluoro analogue had no effect on lignin composition. Thus antimetabolite or specific effect of this analogue could not be shown. © 1990. [less ▲]

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See detailThe effect of fiber morphology on the tensile strength of natural fibers
Alves Fidelis, Maria Ernestina; Vitorino Castro Pereira, Thatiana; Da Fonseca Martins Gomes, Otavio ULiege et al

in Journal of Materials Research and Technology (2013), 2(2), 149-157

In the present work the morphology of natural fibers was correlated with their mechanical properties via image analysis. Jute, sisal, curaua, coir and piassava fibers were tested under direct tension in a ... [more ▼]

In the present work the morphology of natural fibers was correlated with their mechanical properties via image analysis. Jute, sisal, curaua, coir and piassava fibers were tested under direct tension in a universal testing machine and the cross-sectional areas of the fibers were calculated using images obtained in a scanning electron microscopy. For the jute fiber the tests were performed for several gage lengths in order to investigate its influence on the tensile strength and to compute the machine compliance. For sisal, jute and curaua fibers the amount of fiber-cells, the size of the cell walls and the real area of the fibers were measured and their correlation with the tensile strength addressed. The curaua fiber presented the highest mechanical performance with tensile strength and Young's modulus of 543 MPa and 63.7 GPa, respectively. Weibull statistical analysis was used to quantify the variability of fiber strength. The sisal fibers presented the highest Weibull modulus (3.70), whereas the curaua presented the lowest one (m = 2.2), which means that the sisal had the lowest variability and curaua the highest. [less ▲]

Detailed reference viewed: 156 (3 ULiège)
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See detailEffect of filler content and size on transport properties of water vapour in PLA/calcium sulfate composites
Gorrasi, Giuliana; Vittoria, Vittoria; Murariu, Marius et al

in Biomacromolecules (2008), 9

Starting from calcium sulfate (gypsum) as fermentation byproduct of lactic acid production process, high performance composites have been produced by melt-blending polylactide (PLA) and -anhydrite II (AII ... [more ▼]

Starting from calcium sulfate (gypsum) as fermentation byproduct of lactic acid production process, high performance composites have been produced by melt-blending polylactide (PLA) and -anhydrite II (AII) filler, i.e., calcium sulfate hemihydrate previously dried at 500 °C. Characterized by attractive properties due to good filler dispersion throughout the polyester matrix and favorable interactions between components, these composites are interesting for potential use as biodegradable rigid packaging. The effect of filler content and mean particle diameter on the barrier properties such as sorption and diffusion to water vapor has been examined and compared to unfilled PLA. Even without additional treatments, the presence of the filler introduced constraints on molecular mobility in the permeable phase of amorphous PLA and the amount of solvent absorbed appears lower in the highly filled composites. Surprisingly, for PLA-30% AII compositions, by addition of filler characterized by high mean particle diameter (e.g., 43 μm) the thermodynamic diffusion parameter, D0, decreased up to 2 orders of magnitude. The dimension of filler particles and their percentage in the continuous polymeric phase seem to be the most important parameters that determine the barrier properties of the PLA-AII composites to water vapor. [less ▲]

Detailed reference viewed: 15 (2 ULiège)
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See detailEffect of finger tapping frequency on abnormal subthalamic nucleus oscillations in Parkinson’s disease
Stamatakis, Julien; Noirhomme, Quentin ULiege; Orban, Jonhatan et al

Poster (2012, October)

Detailed reference viewed: 54 (12 ULiège)
Peer Reviewed
See detailEffect of fish oil supplementation in a model of a feline asthma
Kirschvink, N.; Leemans, Jérôme ULiege; Delvaux, F. et al

in Acta Physiologica (2008), 192(662 Suppl), 10

Detailed reference viewed: 42 (6 ULiège)
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See detailEffect of flower traits and hosts on the abundance of parasitoids in perennial multiple species wildflower strips sown within oilseed rape (Brassica napus) crops
Hatt, Séverin ULiege; Uyttenbroeck, Roel ULiege; Chevalier Mendes Lopes, Thomas et al

in Arthropod-Plant Interactions (in press)

Reducing the use of insecticides is an important issue for agriculture today. Sowing wildflower strips along field margins or within crops represents a promising tool to support natural enemy populations ... [more ▼]

Reducing the use of insecticides is an important issue for agriculture today. Sowing wildflower strips along field margins or within crops represents a promising tool to support natural enemy populations in agricultural landscapes and, thus, enhance conservation biological control. However, it is important to sow appropriate flower species that attract natural enemies efficiently. The presence of prey and hosts may also guide natural enemies to wildflower strips, potentially preventing them from migrating into adjacent crops. Here, we assessed how seven flower traits, along with the abundance of pollen beetles (Meligethes spp., Coleoptera: Nitidulidae) and true weevils (Ceutorhynchus spp., Coleoptera: Curculionidae), affect the density of parasitoids of these two coleopterans in wildflower strips sown in an oilseed rape field in Gembloux (Belgium). Only flower traits, not host (i.e. pollen beetles and true weevils) abundance, significantly affected the density of parasitoids. Flower colour, ultraviolet reflectance and nectar availability were the main drivers affecting parasitoids. These results demonstrate how parasitoids of oilseed rape pests react to flower cues under field conditions. Similar analyses on the pests and natural enemies of other crops are expected to help to develop perennial flower mixtures able to enhance biological control throughout a rotation system. [less ▲]

Detailed reference viewed: 16 (1 ULiège)
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See detailEffect of food intake levels on leptin and IGF-I plasma concentrations in sheep
Archa, Bouchaib; Bister, Jean-Loup; Colinet, Frédéric ULiege et al

in Acta Physiologica (2006), 187(Suppl 651), 4

The effect of high (H) or low (L) levels of food intake, during the preceding 51 weeks, on leptin and Insulin-like growth factor-I (IGF-I) plasma concentrations in sheep were investigated in groups of 20 ... [more ▼]

The effect of high (H) or low (L) levels of food intake, during the preceding 51 weeks, on leptin and Insulin-like growth factor-I (IGF-I) plasma concentrations in sheep were investigated in groups of 20 adult Timahdite (non-lactating, non-pregnant) ewes. Ewes of the two treatments had similar liveweight at the start of study but there was a twofold difference in energy intake. All animals were maintained indoors under natural daylength conditions (33°53'N, 5°32'W). Blood samples were collected monthly and the statistical analyses were performed on leptin and IGF-I levels. The mean leptin plasma concentrations were higher in H ewes than L sheep (3.98±0.97 ng/ml vs 3.34±1.17 ng/ml, P<0.05). For IGF-I, from week 1 to 26, the mean plasma concentrations were higher in H ewes than L sheep (76±28 ng/ml vs 58±21 ng/ml, P<0.01). However, from week 31 to 51, the mean plasma concentrations were similar in both groups (57±24 ng/ml vs 59±25 ng/ml, P>0.05). It was concluded that the food intake levels affect significantly leptin and IGF-I plasma concentrations and consequently may be the link between food intake, body condition and reproductive performances in sheep. [less ▲]

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See detailThe effect of food on growth and metamorphosis of paedomorphs in Triturus alpestris apuanus
Denoël, Mathieu ULiege; Poncin, Pascal ULiege

in Archiv für Hydrobiologie (2001), 152(4), 661-670

The effect of food level on growth and metamorphosis of paedomorphs was examined in an experimental replicated design in Triturus alpestris apuanus. Paedomorphosis concerns the retention of larval ... [more ▼]

The effect of food level on growth and metamorphosis of paedomorphs was examined in an experimental replicated design in Triturus alpestris apuanus. Paedomorphosis concerns the retention of larval characteristics in adult individuals. Newts that forgo metamorphosis and then retain gill and gill slits in the adult stage maintain an aquatic life but keep potential for undergoing metamorphosis. Paedomorphs metamorphosed later in treatments with food as a non-limiting factor than in stressful treatments where food was limited. Timing of metamorphosis did not differ between males and females. Food level greatly affected growth rates. These results confirm and extend optimality models that predict paedomorphosis under advantageous aquatic conditions (paedomorph advantage hypothesis) and metamorphosis in stressful aquatic habitats. [less ▲]

Detailed reference viewed: 252 (17 ULiège)
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See detailThe effect of food on ontogenetic pathway switching in paedomorphic Alpine newts
Denoël, Mathieu ULiege; Poncin, Pascal ULiege

Poster (2001)

Paedomorphosis concerns the retention of larval characteristics in adult individuals. Newts that forgo metamorphosis and then retain gill and gill slits in the adult stage maintain an aquatic life but ... [more ▼]

Paedomorphosis concerns the retention of larval characteristics in adult individuals. Newts that forgo metamorphosis and then retain gill and gill slits in the adult stage maintain an aquatic life but keep potential for undergoing metamorphosis. They are thus good biological models to test evolutionary hypotheses predicting ontogenetic pathway switching in unfavourable and stressful environments. They are also interesting targets to understand their maintenance in a large range of habitats. Our aim was then to examine the effect of food level on growth and metamorphosis of paedomorphic Alpine newts Triturus alpestris apuanus (Amphibia, Salamandridae) in an experimental replicated design. Paedomorphs metamorphosed later in treatments with food as a non-limiting factor than in stressful treatments where food was limited. Timing of metamorphosis did not differ between males and females. Food level greatly affected growth rates. These results confirm and extend optimality models that predict paedomorphosis under advantageous aquatic conditions (paedomorph advantage hypothesis) and metamorphosis in stressful aquatic habitats. [less ▲]

Detailed reference viewed: 24 (2 ULiège)
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See detailEffect of four percent carbon dioxide during the second half of incubation on embryonic development, hatching parameters, and posthatch growth.
Everaert, Nadia ULiege; Kamers, B.; Witters, A. et al

in Poultry science (2007), 86(7), 1372-9

In this study, broiler embryos were exposed during the second half of incubation [embryonic day (ED) 10 until ED18] to 4% CO(2). The CO(2) was set to reach 2% on ED11 and 4% from ED12 onward. Two ... [more ▼]

In this study, broiler embryos were exposed during the second half of incubation [embryonic day (ED) 10 until ED18] to 4% CO(2). The CO(2) was set to reach 2% on ED11 and 4% from ED12 onward. Two experiments were conducted with the same setup. Embryo weight was measured and partial pressure of CO(2) and O(2) in the air cell was analyzed at several embryonic ages. Times of internal pipping, external pipping, and hatching were recorded. Chicks were raised until d 7 posthatch. Plasma corticosterone, triiodothyronine, and thyroxine concentrations were determined. Embryonic growth was not retarded and hatchability did not decrease in the CO(2)-incubated group, demonstrating that chicken embryos can tolerate high (4%) concentrations of CO(2) between ED10 and ED18. In the first experiment, partial pressure of CO(2) in the air cell was significantly higher in the CO(2) group on ED11, ED12, ED13, and ED14, but disappeared thereafter. This difference was not observed in the second experiment. A change in the hatching process of the CO(2) group was seen. Relative growths of newly hatched chicks until d 7 posthatch were equal in the CO(2) group and the control group. However, corticosterone and thyroxine concentrations were significantly higher in the CO(2)-incubated chicks on d 7 posthatch. [less ▲]

Detailed reference viewed: 16 (1 ULiège)