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See detailEffect of experimentally induced acute pneumonia on diaphragmatic strength generation in neonatal calves
Desmecht, Daniel ULiege; Linden, Annick ULiege; Amory, Hélène ULiege et al

in Archives Internationales de Physiologie et de Biochimie (1992)

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See detailThe effect of exposure to drugs on the processing of natural rewards
Anselme, Patrick ULiege

in Neuroscience & Biobehavioral Reviews (2009), 33(3), 314-335

Why does moderate exposure to a drug reward make natural rewards increasingly attractive to organisms, whereas prolonged exposure to the same drug reward has the opposite effect? The paradox behind that ... [more ▼]

Why does moderate exposure to a drug reward make natural rewards increasingly attractive to organisms, whereas prolonged exposure to the same drug reward has the opposite effect? The paradox behind that question remains unsatisfactorily captured by current theories of addiction. The incentivesensitisation theory is viewed as a promising approach to this paradox, although it provides no mechanism to explain the decrease in interest of natural rewards as time exposure to a drug increases. To attempt to remedy this problem, I describe a model called the anticipatory dynamics model (ADM) that suggests a pivotal role of anticipation and attention inmotivational interactions. In addition to relying on strong neuropsychopharmacological data, the ADM provides an original conception of motivational specificity. The ADM is an extension of the incentive-sensitisation theory that hypothesizes how drugs interact with natural rewards. It has not been tested empirically, although a possible experiment to test two predictions in the field of addiction is presented. [less ▲]

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See detailEffect of extraction conditions on the yied and purity of ulvan extracted from Ulva lactuca
Yaich, Hela; Garna, Haikel; Besbes, Souhail et al

in Food Hydrocolloids (2013)

A study of the influence of extraction conditions (pH: 1.5 and 2; temperature: 80 °C and 90 °C; extraction time: 1-3 h), on the yield, chemical composition and purity of the sulphated cell wall ... [more ▼]

A study of the influence of extraction conditions (pH: 1.5 and 2; temperature: 80 °C and 90 °C; extraction time: 1-3 h), on the yield, chemical composition and purity of the sulphated cell wall polysaccharides ulvan, extracted from the green seaweed Ulva lactuca and precipitated by alcohol is carried out. The alcohol precipitate yields varied from 21.68% to 32.67% (%dw/dw) depending on the pH. At pH 2, the alcohol precipitate yields and the uronic acid recovery from extract juice are higher than those obtained at pH 1.5. Other compounds than ulvan such as cellulose, hemicellulose, proteins and ash are solubilized from the cell walls of Ulva lactuca at both pH, and they are precipitated with alcohol. The alcohol precipitate obtained from different extraction conditions has high uronic acid (20.37%-23.60%) and neutral sugar content (20.09%-29.12%), especially when the conditions (pH, temperature) are drastic. It contains rhamnose (13.35%-15.59%), glucose (2.90%-10.97%), and xylose (2.36%-2.73%). A decrease in the molecular weight of ulvan was observed at acid pH, and for long extraction times. The presence of proteins (1.94%-2.32%) and inorganic material (33.36%-47.15%) in alcohol precipitate prove the lower purity of ulvan extracted and shows that ulvan precipitation with ethanol is not specific. © 2012 Elsevier Ltd. [less ▲]

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See detailEffect of extraction conditions on the yield and purity of apple pomace pectin precipitated but not washed by alcohol
Garna, Haikel; Mabon, Nicolas; Robert, Christelle et al

in Journal of Food Science (2007), 72(1), 1-9

A study of the influence of extraction condition (pH: 1.5 to 2; temperature: 80 to 90 degrees C; extraction time: 1 to 3 h), on the yield and purity of apple pomace pectin without elimination of ... [more ▼]

A study of the influence of extraction condition (pH: 1.5 to 2; temperature: 80 to 90 degrees C; extraction time: 1 to 3 h), on the yield and purity of apple pomace pectin without elimination of impurities by alcohol washing was carried out. The alcohol precipitate yields varied from 2.9% to 8.9% depending on the pH. At pH 1.5, these yields were higher than those obtained at pH 2 contrary to the galacturonic acid purity (%w/w). Compounds other than pectins were solubilized from the cell walls of apple pomace at pH 1.5, and they were precipitated with alcohol. The apple pectins obtained from the different extraction procedures were highly methylated (54.5% to 79.5%), especially when the conditions (temperature, pH) were drastic. Similar conclusions can be drawn for the neutral sugar content that decreased at pH 1.5 (arabinose, xylose, and galactose) or at the highest temperatures and extraction times (arabinose and galactose). The phenomenon of demethylation and pectin degradation of neutral sugars chains can be observed at acid pH, and long extraction times. The presence of high quantities of mannose or fructose, glucose, and xylose in the alcohol precipitate showed that pectin precipitation with ethanol was not specific. [less ▲]

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See detailEffect Of Extraction Conditions On The Yield, Purity And Surface Properties Of Sugar Beet Pulp Pectin Extracts
Yapo, Marcel Beda; Robert, Christelle; Etienne, Isabelle et al

in Food Chemistry (2007), 100(4), 1356-1364

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See detailEFFECT OF EXTRACTION pH ON PHYSICO-CHEMICAL, ENZYMATIC AND TECHNOLOGICAL PROPERTIES OF CRUDE EXTRACTS FROM WILD CARDOON (CYNARA CARDUNCULUS L.) FLOWERS
BEN AMIRA, Amal; BESBES, Souhail; ATTIA, Hamadi et al

Conference (2016, March 22)

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See detailEffect of extraction pH on techno-functional properties of crude extracts from wild cardoon (Cynara cardunculus L.) flowers
Ben Amira, Amal ULiege; Makhlouf, Ines; Petrut, Raul Flaviu et al

in Food Chemistry (2017), 225

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See detailEffect of far-infrared radiation assisted drying on microstructure of banana slices: An illustrative use of X-ray microtomography in microstructural evaluation of a food product
Léonard, Angélique ULiege; Blacher, Silvia ULiege; Nimmol, Chatchai et al

in Journal of Food Engineering (2008), 85(1), 154-162

X-ray microtomography coupled with image analysis represents a non-destructive technique, which allows scanning an entire sample to obtain such information as total pore volume and pore size distribution ... [more ▼]

X-ray microtomography coupled with image analysis represents a non-destructive technique, which allows scanning an entire sample to obtain such information as total pore volume and pore size distribution without the need of serial cuts as in the case of scanning electron microscopy (SEM). The technique has been applied successfully to obtain reliable microstructural information of many products undergoing different physical and chemical processes. However, the technique has still found limited use in food processing. To illustrate the use of X-ray microtomography the technique was applied to investigate the effect of far-infrared radiation (FIR) assisted drying on microstructure of a food product viz. banana. Two representative drying techniques, i.e., low-pressure superheated steam drying (LPSSD) and vacuum drying (VACUUM) were tested. Banana slices were dried by LPSSD-FIR at two different temperatures (80 and 90 degrees C) at a fixed pressure of 7 kPa. The total pore volume and pore size distribution of dried banana slices were then determined using X-ray microtomography. The results were also compared with those of products dried by LPSSD without FIR. Far-infrared radiation was found to modify the structure of the dried bananas by increasing their final porosity. The same effect of FIR was also observed in the case of vacuum drying with FIR (VACUUM-FIR). An increase of the drying temperature was also found to globally lead to an increase in the final porosity of the products. (C) 2007 Elsevier Ltd. All rights reserved. [less ▲]

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See detailEffect of feed enzymes on digestibility and growth in weaned pigs: A systematic review and meta-analysis
Torres-Pitarch, Alberto; Hermans, David; Manzanilla, Edgar Garcia et al

in Animal Feed Science & Technology (2017), 233

Supplementation of post-weaning diets with exogenous enzymes has been suggested to control post-weaning syndrome, by compensating for the under-developed endogenous enzyme secretory capacity and ... [more ▼]

Supplementation of post-weaning diets with exogenous enzymes has been suggested to control post-weaning syndrome, by compensating for the under-developed endogenous enzyme secretory capacity and increasing nutrient digestibility in newly weaned pigs. The effect of in-feed enzymes in improving gut maturation, growth and/or health in weaned piglets is not always consistent. A systematic review and a meta-analysis were therefore conducted to determine which exogenous enzymes are most consistent in improving piglet growth and digestibility when supplemented to post-weaning diets. The mean difference effect of enzyme supplementation on growth and digestibility of dry matter (DM), gross energy (GE), crude protein (CP), and P digestibility was calculated for each study and this was used as the effect size estimate in the meta-analysis. The impact of feed enzyme supplementation on intestinal health and bone mineralization was also discussed where information was available in the literature. From a total of 90 studies included in the metaanalysis, G:F was improved in 55, remained un-changed in 28 and deteriorated in 7, in response to enzyme supplementation. Average daily gain, average daily feed intake (ADFI) and G:F was improved when phytase was supplemented in the diet. Phosphorous digestibility was increased with phytase supplementation while GE digestibility was reduced. Dietary phytase supplementation increased bone mineralization in pigs fed diets with a reduced Pcontent. Supplementation with multi-enzyme complexes increased DM and CP digestibility. In conclusion, the most consistent improvement in piglet growth, P digestibility and bone mineralization were found due to exogenous phytase supplementation. Supplementation with xylanase alone or in combination with β-glucanase had inconsistent effects on piglet growth and nutrient digestibility. The most consistent improvements in growth and nutrient digestibility due to supplementation with multi-enzymes complexes were found when mannanase and/or protease were included in the complex. [less ▲]

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See detailEffect Of Feed N-15 Incorporation Into Solid-Associated Bacteria On The In Situ Nitrogen Degradability Of N-15 Labelled Italian Ryegrass
Kamoun, Mohammed; Lopez, Secundino; Beckers, Yves ULiege et al

in Animal Feed Science & Technology (2007), 135(3-4), 353-361

The objective of this study was to examine the effect of microbial contamination of the incubation residue on the in situ nitrogen degradability of Italian ryegrass. Microbial nitrogen in the bag residues ... [more ▼]

The objective of this study was to examine the effect of microbial contamination of the incubation residue on the in situ nitrogen degradability of Italian ryegrass. Microbial nitrogen in the bag residues was estimated by the feed 15N dilution procedure, and the incorporation of feed 15N into the adherent bacteria was assessed after isolating a bacterial pellet and determining its 15N enrichment. Isotopically labelled Italian ryegrass (fertilized with 15NH4 15NO3) was harvested either in spring (early cut) or in summer (late cut). Forages were incubated in the rumen of two steers for 6, 24 and48 h. The proportion of microbial N per unit of total N in the bag residue increased with incubation time, ranging from 184 to 853 mg microbial N/g totalN at 6 and 48 h, respectively. 15N enrichment in the bacterial pellet was highest after 6 h of incubation (3.6 mg 15N/g N) and then declined steadily (0.8 mg 15N/gN in 48-h residues). Microbial 15N represented up to 0.422 g/g total 15N in the bag residue, but the incorporation of feed 15N into bacterial N did not account for more than 57 mg/g 15N incubated, this incorporation rate decreasing progressively with incubation time. Correction of apparent N disappearance for microbial N resulted in higher values of N degradability, especially for the late cut grass. A further correction considering the amount of microbial 15N had little effect on the estimation of corrected N degradability values. Therefore, some of the feed 15N is incorporated into bacterial N, but this fraction has a minor effect on the estimation of total microbial N in the bag residue by the feed 15N dilution approach, and hence on the estimation of corrected degradability values. [less ▲]

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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)

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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 ▲]

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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)

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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

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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

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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)

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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)

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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)

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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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