References of "1974"
     in
Bookmark and Share    
Peer Reviewed
See detailNon-stationnarite et aspects fonctionnels du comportement agonistique chez Tilapia macrochir (Boulenger 1912) (Piscer: Cichlidae)
Balthazart, Jacques ULg

in Acta Zoologica et Pathologica Antverpiensia (1974), 58(0), 29-40

Detailed reference viewed: 12 (3 ULg)
Full Text
See detailLe behaviorisme aujourd'hui: II.Réflexions sur le behaviorisme contemporain
Richelle, Marc ULg

in Psychologica Belgica (1974), 14(3), 283-296

Detailed reference viewed: 76 (1 ULg)
Full Text
Peer Reviewed
See detailControl of key pecking by the duration of a visual stimulus
Perikel, J. J.; Richelle, Marc ULg; Maurissen, J.

in Journal of the Experimental Analysis of Behavior (1974), 22(1), 131-134

Pigeons' key peck were brought under the control of the duration of a visual stimulus in one-key and two-key procedures. In the one-key procedure, pecks were reinforeced after presentations of a long ... [more ▼]

Pigeons' key peck were brought under the control of the duration of a visual stimulus in one-key and two-key procedures. In the one-key procedure, pecks were reinforeced after presentations of a long-duration stimulus but not after presentations of a short-duration stimulus. In the two-key procedure, left-key pecks were reinforced after the long-duration stimulus and right-key pecks after the short-duration stimulus. In both procedures, the long-duration stimulus was 10 sec, and the short-duration stimulus was increased from 1 to 8 sec in1-sec steps. Discriminative control developed with both procedures, but with greater acuracy in the two-key procedures, in which a difference threshold was obtained at short-duration values between 7 and 8 sec, or about 2.5 sec shorter than the long-duration stimulus. [less ▲]

Detailed reference viewed: 4 (1 ULg)
Peer Reviewed
See detailThe stratigraphical significance of the Protognathodus Fauna from Stockum (Devonian - Carboniferous Boundary, Rhenish Schiefergebirge).
Alberti, H; Groos-Uffenorde, H; Streel, Maurice ULg et al

in Newsletter on Stratigraphy (1974), 3(4), 263-276

Detailed reference viewed: 4 (0 ULg)
See detailLes conduites créatives: Essai d'exploration expérimentale
Richelle, Marc ULg; Botson, Claude

Book published by Ministère de l'Education Nationale (1974)

Detailed reference viewed: 19 (0 ULg)
Full Text
See detailLe behaviorisme aujourd'hui: I.Méthodes de conditionnement et théorie du comportement
Richelle, Marc ULg

in Psychologica Belgica (1974), 14(2), 127-143

Detailed reference viewed: 72 (1 ULg)
Peer Reviewed
See detailSimilitude des assemblages de spores d'Europe, d'Afrique du Nord et d'Amérique du Nord au Dévonien terminal.
Streel, Maurice ULg

in Sciences Géologiques. Bulletin (1974), 27(1-2), 25-38

Detailed reference viewed: 2 (0 ULg)
Full Text
See detailUne réalisation en cours: la réserve de Seilles
Libois, Roland ULg; Serusiaux, E

in Bulletin des Réserves Naturelles et Ornithologiques de Belgique (1974), 21

Detailed reference viewed: 10 (2 ULg)
Full Text
See detailAnalyse dynamique des systèmes hydroélastiques de révolution par la méthode des éléments finis. Application à l'étude du phénomène "POGO" dans les lanceurs à ergols liquides.
Debongnie, Jean-François ULg; HUCK, A.

in Collection des publications de la Faculté des Sciences Appliquées, Université de Liège (1974), 50

The small oscillations of elastic containers partially filled with liquids are studied. After a brief review of the previously published work on this subject, a new variational formulation of the problem ... [more ▼]

The small oscillations of elastic containers partially filled with liquids are studied. After a brief review of the previously published work on this subject, a new variational formulation of the problem is presented. The application uses the finite element method and a new algorithm of solution is proposed. The accuracy of the method is illustrated by several examples including a two tanks launcher structure. [less ▲]

Detailed reference viewed: 39 (8 ULg)
Full Text
See detailEtude sédimentologique dans la grotte de Remouchamps
Ek, Camille ULg

in Anthropologica et Praehistorica : Bulletin de la Société Royale Belge d'Anthropologie et de Préhistoire (1974), 85

Sedimentological study: Grain size analyses, morphoscopy, morphometry, heavy minerals. Sediments include: fluvial deposits, aeolian deposits, gelifracts. Some very flat pebbles got through a deep sump. A ... [more ▼]

Sedimentological study: Grain size analyses, morphoscopy, morphometry, heavy minerals. Sediments include: fluvial deposits, aeolian deposits, gelifracts. Some very flat pebbles got through a deep sump. A stalagmitic floor covered the fluvial sediments. Aeolian deposits, reworked by rainwash, are restricted to the entrance zone. Gelifraction occured in the same zone. [less ▲]

Detailed reference viewed: 16 (4 ULg)
Peer Reviewed
See detailPalynology and Ostracode distribution in the Upper Devonian and basal Dinantian of Belgium and their dependence on sedimentary facies.
Becker, G; Bless, M.J.M.; Streel, Maurice ULg et al

in Mededelingen - Rijks Geologische Dienst (1974), 25(2), 9-99

Detailed reference viewed: 12 (0 ULg)
See detailPalynologie des stratotypes du Dévonien et du Carbonifère inférieur de l’Europe occidentale.
Streel, Maurice ULg

in Académie des sciences de l'URSS, Institut géologique (1974)

Detailed reference viewed: 5 (2 ULg)
Peer Reviewed
See detailEtude au microscope électronique à balayage de cellules normales ou cancéreuses fixées et déshydratées par différentes méthodes
Heinen, Ernst ULg; Pierard, Gérald ULg

in Bulletin de l'Académie Royale de Médecine de Belgique (1974), 161

Detailed reference viewed: 21 (2 ULg)
Full Text
Peer Reviewed
See detailComment la Pénicilline tue les bactéries
Ghuysen, Jean-Marie ULg; Leyh-Bouille, Mélina; Frère, Jean-Marie ULg et al

in Annales de Microbiologie (1974), 125 B(2), 209-210

Detailed reference viewed: 21 (2 ULg)
Full Text
Peer Reviewed
See detailFaut-il supprimer les examens universitaires, les perfectionner ou seulement les ritualiser ?
François, Lucien ULg

in Revue Universitaire de Liège (1974)

Detailed reference viewed: 148 (9 ULg)
Full Text
Peer Reviewed
See detailEtude d'un modèle mathématique empirique pour la mesure du transit gastro-intestinal
Debouche, Charles ULg

in Bulletin des Recherches Agronomiques de Gembloux (1974), 9(3), 335-342

Dans le cadre de l'étude de transit gastro-intestinal chez les polygastriques, cet article présente un modèle mathématique empirique pour décrire l'évolution de la concentration fécale en traceur ... [more ▼]

Dans le cadre de l'étude de transit gastro-intestinal chez les polygastriques, cet article présente un modèle mathématique empirique pour décrire l'évolution de la concentration fécale en traceur radioactif qui suit un marquage instantané. Ce modèle permet notamment de calculer le temps mis en moyenne par une particule pour traverser le tube digestif. [less ▲]

Detailed reference viewed: 46 (3 ULg)