The effect of pinealectomy on plasma levels of gonadotrophins and growth hormone in the pigeon (Columba livia).
; ; Balthazart, Jacques et al
in Journal of Pineal Research (1984), 1(4), 381-9Detailed reference viewed: 7 (0 ULg)
Modifications de la mécanique ventilatoire et anomalies du rapport ventilation/perfusion dans la période opératoire et postopératoire.
Lamy, Maurice ; Damas, Pierre
in Aspetti di patologia bronco-polmonare in anestesia e rianimazione (1984)Detailed reference viewed: 31 (7 ULg)
The effect of social security on saving: the case of Belgium with a particular emphasis on the behaviour of the aged
Pestieau, Pierre ; Perelman, Sergio
in Empirical Economics (1984), (9), 15-26
Based on a consumer expenditure function estimated with Belgian time series data, this paper analyses the impact of social security on personal saving. It shows that social security has a depressive ... [more ▼]
Based on a consumer expenditure function estimated with Belgian time series data, this paper analyses the impact of social security on personal saving. It shows that social security has a depressive effect, mainly by affecting the saving behavior of the aged. [less ▲]Detailed reference viewed: 11 (4 ULg)
Partial characterization of testosterone-metabolizing enzymes in the quail brain.
; ; Balthazart, Jacques
in Brain Research (1984), 305(1), 51-9
The properties of 5 beta-reductase, 5 alpha-reductase and aromatase, 3 testosterone metabolizing enzymes, were studied in the quail brain by an in vitro incubation technique. The results describe the ... [more ▼]
The properties of 5 beta-reductase, 5 alpha-reductase and aromatase, 3 testosterone metabolizing enzymes, were studied in the quail brain by an in vitro incubation technique. The results describe the changes in time of metabolite production and the effects of temperature, enzyme and cofactor concentrations. The apparent Km and Vmax were evaluated for the 3 enzymes. Aromatase and 5 alpha-reductase have a higher affinity but a lower capacity than 5 beta-reductase. The kinetics of the latter enzyme are complex and suggest the presence of two types of enzymes. These characteristics fit in well with the role probably played by the enzymes in vivo. [less ▲]Detailed reference viewed: 4 (0 ULg)
Prostaglandines et physiologie de la reproduction humaine et animale.
in Journal de Gynécologie, Obstétrique et Biologie de la Reproduction (1984), 13(4), 351-61
This review of 417 publications in the literature covers various aspects of the role of prostaglandins in human and animal reproductive physiology. The author points out that there are a variety of ... [more ▼]
This review of 417 publications in the literature covers various aspects of the role of prostaglandins in human and animal reproductive physiology. The author points out that there are a variety of prostaglandins all belonging to a family of substances that derive from arachadonic acid. They are present in many human and animal tissues, are extremely labile and are involved in reproduction in the ovary in follicular development and release of the follicle, in the tube in migration of the gametes, and in the uterus in implantation and delivery. The author says that the role of prostaglandins is not an exclusive one but they are linked with the hypothalamo-pituitary hormones, as well as with progesterone and oestrogens. It may be possible that PGE helps to initiate follicular development by stimulating the appearance of LH and FSH receptors. PGE is also luteotrophic. Indomethacin which is a prostaglandin inhibitor however does not modify the ability of LH to stimulate luteinization and maturation of the oocyte. The author postulates on the origin and the identification of the luteolytic factor and gives schematic illustration of the arterio-venous blood supply between the uterus and the ovary which is so important for the good function of the prostaglandins. It is possible that PGF type prostaglandins which are vasoconstrictor may reduce the flow of blood around the ovary, perhaps even specifically to luteal tissue. He postulates that PGF2 alpha in its relationship to its receptors is necessary but insufficient to explain the full luteolytic effect. Turning to the semen he shows that the nature and concentration of prostaglandins in semen varies from one species to another. He thinks that there is a triple role for prostaglandins with semen, which is: a participation in the events of ejaculation, an effect on the female genital tract, and an effect on the mobility of spermatozoa. He speaks of the role of prostaglandins on the Fallopian tubes and believes that they do have an effect on determining the movement of the tubes but cannot explain exactly what. [less ▲]Detailed reference viewed: 250 (3 ULg)
THE PROCESS E+ E- $\to$ Q ANTI-Q GAMMA AND THE ELECTRIC CHARGE OF COLORED QUARKS
Cudell, Jean-René ; ;
in Physics Letters B (1984), 140Detailed reference viewed: 10 (7 ULg)
Stabilisation des sols à la chaux. Action de la chaux vive sur la bentonite et sur la kaolinite.
; Marcoen, Jean Marie ; et al
in Bulletin des Recherches Agronomiques de Gembloux (1984), 19(1-2), 81-110Detailed reference viewed: 15 (0 ULg)
Photoelectric photometry of the peculiar emission-line star GG Carinae
Gosset, Eric ; Surdej, Jean ;
in Astronomy and Astrophysics. Supplement Series (1984), 55
The first extensive sets of photoelectric observations of the peculiar emission-line star GG Carinae were obtained from 1977 to 1981, in both the standard UBV and Strömgren systems. A Fourier analysis of ... [more ▼]
The first extensive sets of photoelectric observations of the peculiar emission-line star GG Carinae were obtained from 1977 to 1981, in both the standard UBV and Strömgren systems. A Fourier analysis of 767 independent measurements leads to the determination of a period P = 31[SUP]d[/SUP].020 for the light variations. Different physical arguments based on the analysis of the present photoelectric - as well as previous photographic - data clearly indicate, however, that the true period is P = 62[SUP]d[/SUP].039. The resulting composite lightcurve displays two distinct maxima and minima with a total light amplitude Deltam â ¡ 0.5 mag. Additional interesting features are noticed in the mean lightcurve. Although it is not possible to classify GG Carinae among any known type of variable stars, the light variations of this object are similar to those observed for beta Lyrae-type systems. [less ▲]Detailed reference viewed: 39 (7 ULg)
Serum trace elements in hemoproliferative diseases
Beguin, Yves ; ; et al
in Bratter, P.; Schramel, P. (Eds.) Trace element analytical chemistry in medicine and biology, Vol. 3 (1984)Detailed reference viewed: 12 (0 ULg)
Compte-rendu de l'ouvrage de Rolande Cuvillier: Vers la réduction du temps de travail?
in Annals of Public and Cooperative Economics = Annales de l'Economie Publique, Sociale et Coopérative (1984), 4Detailed reference viewed: 6 (1 ULg)
A New Method to Evaluate Wave Impact Forces on Offshores Structures
in Proceedings of the Offshore Technology Conference (1984)Detailed reference viewed: 9 (0 ULg)
Etude numérique de l'action des vagues sur les structures océaniques immergées
in Bulletin de l'ATMA (1984)Detailed reference viewed: 4 (0 ULg)
Use of the Polymer Polyox XSR 301 in Model Trials of Irland Navigation
in Proceedings of the AIRH Symposium on Scale Effects in Modelling Hydraulic Structures (Technische Akademie, Esslingen) RFA (1984)Detailed reference viewed: 10 (0 ULg)
Analyse technico-économique des systèmes de transport
Learning material (1984)Detailed reference viewed: 78 (3 ULg)
Use of the Polymer WSR 301 in Hydraulic Tests, Fundamentals and Applications of Polymer ; Drag Reduction in Liquid Flows
Marchal, Jean ;
in Proceed of the Third International Conference on Drag Reduction (1984)Detailed reference viewed: 13 (0 ULg)
Etude sur modèle réduit d'un nouveau type de bateau de pêche "Eurokotter"
Report (1984)Detailed reference viewed: 21 (0 ULg)
Detection of Bovine Leukemia Virus antibodies : use of monoclonal antibody to increase sensitivity and specificity of the ELISA test.
Portetelle, Daniel ; ; et al
in Straub, O. C. (Ed.) Proceedings of the Fifth International Symposium on bovine leukosis (1984)Detailed reference viewed: 13 (0 ULg)
Myofibrillar composition of some red- and white-blooded Antarctic teleosts
Feller, Georges ;
in Molecular Physiology (1984), 5Detailed reference viewed: 4 (0 ULg)
International Directory of Amateur Astronomical Societies
; Manfroid, Jean
in International Directory of Amateur Astronomical Societies - IDAAS 1984 (1984)
Not AvailableDetailed reference viewed: 3 (0 ULg)