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See detailEffet du chargement et de la période de complémentation au pâturage sur les performances de taurillons finis en stabulation
Dufrasne, Isabelle ULg; Gielen, Marc ULg; Limbourg, Pierre et al

in Annales de Médecine Vétérinaire (1994), 138

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See detailEffet du cimatérol sur le métabolisme de l'azote chez des taurillons à l'engrais
Fiems, Leo; Cottyn, B. G.; Van Eenaeme, Christian ULg et al

in Reproduction Nutrition Developpement (1990), 30(2), 243-244

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See detailEffet du colostrum bovin administré à des porcelets au sevrage sur la morphologie de la paroi intestinale et sur le système immunitaire
Boudry, Christelle ULg; Dalle, Marie-Julie; Halleux, Caroline et al

in 37èmes journées de la recherche porcine (2005, February)

Two groups (A and B) of 6 piglets, weaned at 21 days (D0), received ad libitum the same diet during three weeks. The piglets of group A were not submitted to a colostrum supplementation while those of the ... [more ▼]

Two groups (A and B) of 6 piglets, weaned at 21 days (D0), received ad libitum the same diet during three weeks. The piglets of group A were not submitted to a colostrum supplementation while those of the group B received daily and orally 5 g of bovine colostrum. Each week, piglets were weighed and blood was taken on each one of them. One piglet of each group was sacrified on D0 and the rest of the animals on D21. Mesenteric lymph nodes (ML), iléal Peyer patches (iPP), jejunum and spleen biopsies were taken on each piglet before death. The haematological values and the intestinal histo-morphological data between the two groups were not significantly different, but FACS analyses on the lymphocytes in the biopsies and the determination of stimulation index suggested a significative effect of colostrum on the lymphocytes populations, with, in the ML, an increase of the LB population (14 % vs 28 %, P < 0,05) and, in the iPP, a reduction of the LB's (54,99 % vs 8,44 %, P < 0,01) with an increase of the LT cells (16,87 % vs 72,00 %, P < 0,001). An increase of the lymphocyte stimulation index from piglets receiving colostrum was observed the second day of in vitro stimulation with colostrum. In brief, the answer of the immunity system to bovine colostrum seems to be restricted to the intestinal immunity system and is characterised by an activation, a multiplication and a modification of the lymphocytes ratios. [less ▲]

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See detailEffet du couvert forestier sur la précison d'un système de positionnement global différentiel (dGPS)
Lejeune, Philippe ULg; Hellemans, Philippe

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2000), 4(1), 41-49

Effect of forest canopy on the accuracy of a differential global positioning system (dGPS). The possibilities to use dGPS for forest mapping are analysed. The efficiency of dGPS in forest condition is ... [more ▼]

Effect of forest canopy on the accuracy of a differential global positioning system (dGPS). The possibilities to use dGPS for forest mapping are analysed. The efficiency of dGPS in forest condition is linked to canopy interference, which intercepts signals sent by some of the satellites or reflect them (multipathing). Two types of equipment have been tested : a TrimbleTM Svee Six coupled with a RDS differential receiver and a Trimble SK8 coupled with an OMNISTAR differential receiver. Recordings have been achieved according to two modes : static (recording on one spot during one minute) and cinematic (moving continuously along the stand limits). Two types of forest canopy were compared : light canopy made of young poplar plantation with few obstacles in the vicinity, and closed canopy of mature spruce stand edged with other mature stand. Cinematic mode efficiency is higher than static one (mean errors are respectively 3.1 m and 9.1 m). In the same way positioning is more accurate for the stand with light canopy than for the other one (mean errors are respectively 2.9 m and 9.4 m). Difference between recording modes are probably due to multipathing effect that filtering algorithm integrated in the GPS receivers are not able to remove in static mode. The efficiency of differential signal reception is also different for the two stands : 1.3 % and 20.5 % of missing differential signal respectively in the light and dense canopy conditions. [less ▲]

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See detailEffet du mode de conservation d’huile de Jatropha curcas L. sur son efficacité dans la lutte contre les principaux insectes ravageurs du niébé (Vigna unguiculata (L.) Walp. au Niger
Abdoul Habou, zakari; Toudou, Adam; Haubruge, Eric ULg et al

in Tropicultura (2014), 32(4), 191-196

Jatropha curcas oil has an insecticidal activity harnessed by the farmers in Niger. In this study, we compared the insecticidal activity of two batches of oil conserved during 70 days, one exposed to ... [more ▼]

Jatropha curcas oil has an insecticidal activity harnessed by the farmers in Niger. In this study, we compared the insecticidal activity of two batches of oil conserved during 70 days, one exposed to light and the other kept in the dark. The insecticidal efficacy was evaluated in a field with three concentrations (5, 10 and 15%) trial on the main pests of Cowpea (Vigna unguiculata (L.) Walp) and in a laboratory test on Megalurothrips sjostedti Trybon (Thysanoptera: Thripidae) with different concentrations of crude oil (50; 100; 150 and 200 µl). No difference in insecticidal effect was found between the two modes of oil conservation, both in the laboratory and in the field. In the field, regardless of the mode of conservation, the concentrations of 10% of J. curcas oil enables a reduction of over than 80% of thrips, aphids, and bugs compared to the control. Its increased seeds yield more than 50%. The concentration of 15% gives an insecticidal effect comparable to that of the reference treatment (deltaméthrine) but induces phytotoxicity symptoms on the leaves of Cowpea. [less ▲]

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See detailEffet du sel des cendres brutes de la jacinthe d’eau (Eichhornia crassipes, Solms) sur la réaction du sol et la dynamique des nutriments d’un sol ferrallitique très altéré sous culture du maïs (Zea mays L.)
Bolakonga Ilye, Antoine Bily ULg; Mambani Banda, Pierre; Tuka Bola, Michel

in Annales de l’Institut Facultaire des Sciences Agronomiques de Yangambi (2007), 1

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See detailEffet du stress hydrique sur la composition biochimique des huiles de quatre variétés de carthame (Carthamus tinctorius) produites dans la région orientale du Maroc.
Ben moumen, Abdessamad; Mansouri, Farid; Fauconnier, Marie-Laure ULg et al

in 6èmes Journées internationales d'étude sur les lipides - Programme scientifique, Recueil des Résumés (2013, December)

L'huile de carthame est produite sur une échelle relativement réduite dans certaines régions d'Afrique du Nord et du Moyen-Orient. Cette huile a été caractérisée dans différentes régions du monde et ... [more ▼]

L'huile de carthame est produite sur une échelle relativement réduite dans certaines régions d'Afrique du Nord et du Moyen-Orient. Cette huile a été caractérisée dans différentes régions du monde et plusieurs expériences ont montré une grande variabilité en fonctions des variétés, des sols et des conditions climatiques. [less ▲]

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See detailEffet du Système Public d'Information sur les Marchés (SPIM) sur les prix reçus par les producteurs de maïs au Bénin
Kpenavoun Chogou, Sylvain; Gandonou, Esaïe

in Bulletin de la Recherche Agronomique du Bénin (2013), 73

Public Market Information System (PMIS) is implemented in Benin to collect food prices and their flows which are largely disseminated mainly through national or community radio stations in all regions ... [more ▼]

Public Market Information System (PMIS) is implemented in Benin to collect food prices and their flows which are largely disseminated mainly through national or community radio stations in all regions. This intervention is expected to deliver significant positive impacts on food producers. However, little empirical and systematic analysis has been carried out to evaluate them, particularly the effects on farm gate prices. This article analyses how the reception of improved agricultural market information affects the maize farm gate prices. A distinction has made between access to market information and use of market information. A closer follow-up over each maize transaction during one year was implemented among a stratified sample of 124 maize surplus producers. We find evidence suggesting that better-informed farmers by PMIS managed to bargain for higher prices irrespectively to the transaction modes (selling under contract, selling on distant market, selling at the farm gate without contract). The average price difference per kilogram of maize sold between households with and without PMIS (also referred to as an SPIM premium or PMIS rent) is 23%. The data showed that a farmer who sells under contract with an itinerant trader (contract accompanied by an offer of credit) received the lower prices but they received a higher price when they have access to and use PMIS data. The study confirmed that PMIS is a useful intervention which together with improved access to credit will allow smallholders to better exploit market opportunities. [less ▲]

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See detailEffet du traitement enzymatique sur la composition en polyphénols et sur le pouvoir antioxydant du sirop de dattes
Abbès, Fatma; Wissal, Kchaou; Blecker, Christophe ULg et al

Conference (2014, April 05)

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See detailEffet du Ventolin sur la capacité résiduelle fonctionnelle du nouveau-né
Rigo, Vincent ULg; Mulder, André; Lombet, Jacques et al

in Proesmans, Willem (Ed.) Mini Acta (1997, March)

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See detailEffet Gavroche et relations hyperconflictuelles de travail
Faulx, Daniel ULg; Erpicum, Frédéric ULg; Horion, Emmanuelle

in Interactions (2005), 9(1), 89-116

The University of Liege Department of social Psychology for Groups and Organisations has been leading since 1999 an elaborate action research program on intense conflict situations in which people feel ... [more ▼]

The University of Liege Department of social Psychology for Groups and Organisations has been leading since 1999 an elaborate action research program on intense conflict situations in which people feel they are subjected to aggressions or bullying. This action research aims on the one hand to develop a better understanding of these issues and to find new directions for action. It includes interventions in organisations AND clinical work with people who felt they were subjected to bullying. In the course of our different interventions ( clinical as well as in organisations), we often felt that the concept of bullying was far too narrow, too restrictive to enable us to evoke all the situations we had to deal with even if people used this very word most of the time to refer to their situation and even if these situations included the usually accepted characteristics : hostile behaviour and prejudicial consequences for the persons aimed at ( Quine 1995). We have accordingly extracted from these experiments a few theoretical questions which inspire this article * Is this notion " bullying" appropriate for all the conflicts in which violent ways of behaving are perpetrated and in which people are subjected to important damages? * How should we consider situations in which the interfering parties are both violent and in which both parties suffer from it? * Can we try to define the concept of " hyper-conflict" to depict situations characterised by intense conflicts as far as ways of behaving, cognition as well as emotions are concerned. * * On the other hand, from an empirical point of view, two main explaining patterns seem to exist now in the field of victimisation at work ( Einarsen 1999). The first one focuses on the personality aspects of the people aimed at in these conflicts, the second deals with the part played by psychosocial factors. * On the strength of a bet according to which it might be fertile to insert results coming from meetings with victims giving pieces of information more related to the first pattern as well as from interventions in organisations ( where we expect the results to lean more on the side of the second pattern), we asked the following questions as research material: * * Can we identify recurring psychological and/or organisational patterns in these situations of intense conflicts? * Can we describe the dynamics of these patterns? * How can we describe the way the organisational and individual dimensions get interwoven to build up these dynamics without tracing the explanation to one dimension or to the other? This article deals more particularly with the standardisation of a conflictual pattern we encountered several times and which we named the Gavroche effect. This Gavroche effect concentrates around a psychosocial process of polarising- stigmatising that we will describe hereafter but before that we will sketch the aforementioned theoretical issues. [less ▲]

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See detailEffet modulateur sur la population bactérienne intestinale des hydrates de carbone constitutifs de différentes variétés de céréales
Bindelle, Jérôme ULg

in 9ème Journée des Productions Porcines et Avicoles, Gembloux 14 October 2009 (2009, October 14)

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See detailEffet of dietary fat levels on growth, feed efficiency and biochemical compositions of Eurasian perch Perca fluviatilis
Xu; Fontaine, P.; Mélard, Charles ULg et al

in Aquaculture International (2001), 9

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See detailEffet placebo et questions éthiques
Mormont, Christian ULg

in Weisstub, David N.; Mormont, Christian (Eds.) L’éthique de la recherche (2000)

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See detailEffet placebo, effet nocebo: comment la science explique les guérions miraculeuses
Quertemont, Etienne ULg

Scientific conference (2002)

L’effet placebo est habituellement considéré comme l’ensemble des réponses psychologiques et physiologiques des patients à une substance inerte. On parle d’effet placebo lorsque cette réponse constitue un ... [more ▼]

L’effet placebo est habituellement considéré comme l’ensemble des réponses psychologiques et physiologiques des patients à une substance inerte. On parle d’effet placebo lorsque cette réponse constitue un effet bénéfique pour la santé et d’effet nocebo lorsque les conséquences sont néfastes. Cependant, les phénomènes placebo/nocebo recouvrent plus largement tous les effets du contexte environnemental qui ne résultent pas spécifiquement du traitement médical administré. Une partie de ce qu’on nomme effet placebo/nocebo peut s’expliquer par des mécanismes de conditionnement pavlovien. Des effets placebo résultant du conditionnement pavlovien sont ainsi régulièrement mis en évidence sur des animaux de laboratoire. Au conditionnement pavlovien s’ajoute également chez l’être humain un facteur plus spécifiquement psychologique : l’effet des croyances et des attentes (expectancies). De nombreuses études ont ainsi démontré que les croyances et les attentes des patients exercent des effets objectifs sur leur santé qui se traduisent par des modifications biologiques. Nous examinerons plus particulièrement les mécanismes qui permettent à ces influences psychologiques de modifier l’état biologique d’un sujet. Parmi ceux-ci, le système immunitaire ainsi que les opiacés endogènes qui régulent la douleur semblent particulièrement influencés par l’état psychologique. Finalement nous montrerons comment les phénomènes placebo/nocebo apportent une explication rationnelle à plusieurs exemples de guérisons miraculeuses ou pseudo-scientifiques. Parmi ces exemples nous examinerons plus particulièrement le rôle important que joue l’effet placebo dans l’homéopathie. [less ▲]

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