References of "1973"
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See detailLa dissolution du carbonate de calcium. Essai de mise au point.
Ek, Camille ULg

in Bulletin de la Société Géographique de Liège (1973), 9

Dissolution equilibria. Dissolution kinetics.

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See detailLes phénomènes karstiques du bassin du rio Aragón Subordán (Pyrénées). Leur étagement altitudinal.
Ek, Camille ULg

in Bulletin de la Société Géographique de Liège (1973), 9

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See detailUne bibliographie des états limites
Mormont, Christian ULg

in Feuillets Psychiatriques de Liège (1973), 6

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See detailApproche des cas-limites au moyen du Rorschach
Mormont, Christian ULg

in Acta Psychiatrica Belgica (1973), 73

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See detailOrganisation d'une bibliothèque de programmes statistiques pour ordinateur
Carletti, G.; Claustriaux, Jean-Jacques ULg; Dagnelie, P. et al

in Revue Belge de Statistique, d'Informatique et de Recherche Opérationnelle = Belgisch Tijdschrift voor Statistiek, Informatica en Operationeel Onderzoek (1973), 12(4), 2-16

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See detailIntroduction aux travaux du colloque
Jeuniaux, Charles ULg

in Annales de la Société Royale Zoologique de Belgique (1973), 103(1), 3-5

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See detailPalynologie et stratigraphie du Paléozoique Moyen et Supérieur.
Alpern, B; Streel, Maurice ULg

in Mémoire du Bureau de Recherche géologique et Minéralogique (1973), 77(1(1971)), 217-241

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See detailSystematic characters of some polychaetes (Annelida) at the level of the chemical composition of the Jaws
Voss-Foucart, Marie-Françoise; Fonze-Vignaux, Marie-Thérèse; Jeuniaux, Charles ULg

in Biochemical systematics (1973), 1

The mandibles and maxillae of the buccal ventral organ of 2 species of Eunicidae (Marphysa sanguinea and Eunice torquata) are highly calcified, in contrast to the jaws of 4 species of other families of ... [more ▼]

The mandibles and maxillae of the buccal ventral organ of 2 species of Eunicidae (Marphysa sanguinea and Eunice torquata) are highly calcified, in contrast to the jaws of 4 species of other families of "errant" predacious Polychaetes (Nereidae, Nephthyidae, Aphroditidae and Glyceridae) with axial proboscis. The amino acid composition of the structural proteins of these buccal pieces is also different in the two groups. The structural proteins of the jaws of Glycera convoluta (Glyceridae) are essentially made up of glycine and histidine (up to 86 residues per 100 residues). These chemical characters confirm the phyletic relationships proposed by Dales. [less ▲]

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See detailTuniciers pélagiques récoltés au cours de la troisième croisière atlantique de l'« Armauer Hansen » (1922)
Godeaux, Jean ULg

in Bulletin de la Société Royale des Sciences de Liège (1973), 42(1-2), 53-69

During her third cruise in the eastern north Atlantic (1922), the Norwegian oceanographic ship « Armauer Hansen » collected twelve species of Salpidae, five species of Doliolidae and three species of ... [more ▼]

During her third cruise in the eastern north Atlantic (1922), the Norwegian oceanographic ship « Armauer Hansen » collected twelve species of Salpidae, five species of Doliolidae and three species of Pyrisomidae. The distribution of these animals throughout the area is considered. [less ▲]

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See detailA contribution to the knowledge of the thaliacean faunas of the eastern mediterranean and the red sea
Godeaux, Jean ULg

in Israel Journal of Zoology (1973), 22

In the sector of the Mediterranean east of the 22nd meridian, five species of Salpidae (Thalia democratica, Salpa fusiformis, Ihlea punctata, Pegea confoederata and Cyclosalpa pinnata polae) and five ... [more ▼]

In the sector of the Mediterranean east of the 22nd meridian, five species of Salpidae (Thalia democratica, Salpa fusiformis, Ihlea punctata, Pegea confoederata and Cyclosalpa pinnata polae) and five species of Doliolidae (Doliolum denticulatum, Doliolum nationalis, Doliolina sp., Doliolina intermedium (?) and Dolioletta sp.) were caught during a serie of cruises. At the same time, four species of Salpidae (Thalia democratica, Salpa cylindrica, Brooksia rostrata and Ritteriella amboinensis) and two species of Doliolidae (Doliolina mülleri krohni and Doliolum denticulatum) were recorded in the Gulf of Elat (Gulf of Aqaba). Two further species, Salpa maxima and Dolioletta gegenbauritritonis, previously recorde from this area, were not found again in the last catches. Pyrosomidae are missing in both areas. The two faunas are very differrent, having in common only a few widely distributed species. [less ▲]

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See detailAspects contemporains de la géographie animale
Jeuniaux, Charles ULg

in Annales de la Société Royale Zoologique de Belgique (1973), 103(4), 394-397

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See detailActivités des chitinases gastriques de reptiles en fonction du ph
Micha, J.C.; Dandrifosse, Guy ULg; Jeuniaux, Charles ULg

in Archives Internationales de Physiologie et de Biochimie (1973), 81

The activity of the gastric chitinases of two species of reptiles Lacerta viridis and Clemmys caspica was estimated as a function of pH using a method avoiding the possible interferences between chitinase ... [more ▼]

The activity of the gastric chitinases of two species of reptiles Lacerta viridis and Clemmys caspica was estimated as a function of pH using a method avoiding the possible interferences between chitinase and chitobiase reactions. These chitinases had an optimum pH at about 3.0, kept a strong activity below the pH optimum (till pH 1.5) and were almost completely inhibited at neutral pH. The value of the optimum pH is different from that previously recorded by Jeuniaux, who used a nephelometric method. The discrepancy between these results is discussed. Gastric chitinases of reptiles appear as being adequately adapted to the acidic reaction of the gastric fluids, in which they can hydrolyse chitin at a maximum rate of activity. [less ▲]

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See detailCourbes phénologiques et exploitation quantitative des matériaux de collection
Magis, Noël ULg

in Bulletin et Annales de la Société Royale Belge d'Entomologie = Bulletin en Annalen van de Koninklijke Belgische Vereniging voor Entomologie (1973), 109

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See detailChitinous Cuticle and Systematic Position of Tardigrada
Bussers, Jean-Claude ULg; Jeuniaux, Charles ULg

in Biochemical systematics (1973), 1

The chitinous nature of the cuticle, jaws and stomodaeum of three species of Tardigrada has been definitely proven using a specific micromethod involving a preparation of purified chitinase. These ... [more ▼]

The chitinous nature of the cuticle, jaws and stomodaeum of three species of Tardigrada has been definitely proven using a specific micromethod involving a preparation of purified chitinase. These chemical characteristics are in favour of the phylogenetic closeness between Tardigrada and the Arthropoda. [less ▲]

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See detailComposition chimique de la theque de quelques thecamoebiens (protozoaires)
Saucin-Meulenberg, M.; Bussers, Jean-Claude ULg; Jeuniaux, Charles ULg

in Bulletin Biologique de la France et de la Belgique (1973), 107

The thecae of 7 species of Thecamoeba, belonging to 3 different families (Arcellidae, Plagiopyxidae, Difflugiidae) have been submitted to some chemical tests. In one species of Arcella, the theca was not ... [more ▼]

The thecae of 7 species of Thecamoeba, belonging to 3 different families (Arcellidae, Plagiopyxidae, Difflugiidae) have been submitted to some chemical tests. In one species of Arcella, the theca was not mineralized ; the inorganic constituents of the thecae of the 6 other species hawe been identified as SiO2. In 4 species, the silica flakes were protected by an organic cover, which explains the resistance offered by the thecae to fluorhydric acid. In the 7 species so far studied, the organic cement was found to be proteic in nature, and to be devoid of chitin or cellulose. [less ▲]

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See detailDistribution et localisation tissulaire de la synthèse des chitinases chez les vertébrés inférieurs
Micha, J.C.; Dandrifosse, Guy ULg; Jeuniaux, Charles ULg

in Archives Internationales de Physiologie et de Biochimie (1973), 81

The distribution and the blocalization of chitinase synthesis have been studied in 3 reptiles, 4 batrachians and 29 fishes. Most species with chitin-rich diet were found to be able to secrete chitinases ... [more ▼]

The distribution and the blocalization of chitinase synthesis have been studied in 3 reptiles, 4 batrachians and 29 fishes. Most species with chitin-rich diet were found to be able to secrete chitinases at the level of the gastric mucosa, and, in some cases, at the level of the pancreas, the pyloric caeca, the intestinal mucosa and the liver. In many fishes, the extracts of spleen and kidney exhibited also a low but undeniable chitinolytic activity. As a whole, a good correlation was observed between the composition of the diet and the ability to secrete chitinases. This correlation was less clear-cut among fishes, some ichtyophagous species being able to secrete chitinase while a few insectivorous or omnivorous species were not. The general pattern of the evolution of chitinase synthesis among vertebrates seems to be characterized by the tendancy towards a narrower tissular localization of this synthesis from primitive fishes, where chitinases are elabored by the whole digestive tube, to upper vertebrates where the gastric mucosa, and sometimes the pancreas, is the unique source of chitinolytic enzymes. [less ▲]

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See detailStructure et composition de la cuticule de macrobiotus Sp. et de milnesium tardigradum
Bussers, Jean-Claude ULg; Jeuniaux, Charles ULg

in Annales de la Société Royale Zoologique de Belgique (1973), 103(2-3), 271-279

The structure and the composition of the cuticule of the Tardigrada Macrobiotus sp. and Milnesium tardigradum are studied. The cuticle is always made of two distinct layers extending to the stomodeum. By ... [more ▼]

The structure and the composition of the cuticule of the Tardigrada Macrobiotus sp. and Milnesium tardigradum are studied. The cuticle is always made of two distinct layers extending to the stomodeum. By the two species, the cuticle contents, besides chitin, acid mucopolysaccharides and protids. These facts are arguments to bring nearer Tardigrades and Arthropods. [less ▲]

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See detailPaleozoic Botany
Streel, Maurice ULg; Bonamo, P.N.; Fairon-Demaret, Muriel ULg

in Taxon (1973), 05/22(2/3), 303

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See detailComedy of Intensity: Wilson Harris's Black Marsden
Maes-Jelinek, Hena ULg; Searl, Eva

in Commonwealth Newsletter (1973), 4(July), 21-29

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