jeanflop/post-ocr-correction huggingface dataset:
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présent règlement. 1) Une page de 42 lignes et les autres pages de 44 lignes. COMPTES RENDUS HEBDOMADAIRES DES SÉANCES DE L'ACADÉMIE DES SCIENCES CONTENTS VOLUME 284 — SECTION D No. 17 — SESSION OF MAY 2nd 1977 Meteorites Planar Elements in Quartz from Carswell and Charlevoix (Canada) and Rochechouart (France), by Philippe Lambert and Maurice Pagel 1623 The study of fluid inclusions involves post-shock origin of inclusions in quartz exhibiting planar elements. Morphological investigations by scanning electron microscope reveal 2 types of decorated planar elements. The origin of planar elements is discussed. Geochemistry of Trace Elements Study of the
elements is discussed. Geochemistry of Trace Elements Study of the Aqueous Dissolution of Boron in Granitic Soils and Schistous Soils of the Armorican Massif, by Jean Maurice 1627 The dynamics of the aqueous dissolution of boron is very much the same in soils from granites as in soils from schists of the Armorican Massif, in spite of a highly significant difference between the total boron found in the 2 types of samples. Geology A Study by Submersible of the Stœchiades and Saint-Tropez Canyons (Southern France), by Groupe Estocade (Jacques Angelier, Jean Aubouin, Gilbert Bellaiche, René Blanchet, Olivier de Gharpay France,
Jean Aubouin, Gilbert Bellaiche, René Blanchet, Olivier de Gharpay France, and Xavier le Pichon) 1631 The results of 14 dives made with the submersible Cyana in the lower parts of the Stœchiades and Saint-Tropez canyons between 2,400 and 1,500 m are compatible with the following geological history of the French Mediterranean margin: a thick terrigenous sedimentary series was deposited near the Oligo-Miocene transition; the canyons were eroded subaerially within this series during the Messinian; the morphology of the canyons has been maintained since by active bottom currents and gravity tectonics on the bordering cliffs. New Data on the Paleozoic of
on the bordering cliffs. New Data on the Paleozoic of Western Margin of Tazekka (Eastern Morocco), by Christian Hoepffner 1635 Terrigenous Ordovician and pelagic Silurian-Devonian series were dated in this area. The plant sandstone facies, probably from the middle Devonian, shows the effect of the acadian orogeny. Cambrian Age of the "Bas-Limousin Group" Metamorphic Formations (Massif Central, France), by Jean-Pierre Flot The Bas-Limousin metamorphic area is divided into three lithostratigraphic units separated by two discordances: "Dronne group" at the bottom, "Bas-Limousin group" in the middle and "Gems group" at the top. pre-metamorphic granitic bodies are now turned into orthogneiss inserted
top. pre-metamorphic granitic bodies are now turned into orthogneiss inserted in the mesozonal terranes. The two first granites were intrusive only in the Dronne group and the second one intrusive in both Dronne and Bas-Limousin groups. Radiometric dating indicates 510-520 M. Y. and 450-460 M. Y. respectively for the granitic intrusions. As upper Ordovician and Silurian fauna were found in the Gens group schists, the Bas-Limousin group meta-sediments are probably Cambrian. Petrography Presence of Calcium-Silicates and Scapolite Banded Rocks in Alpujarride Formations in S.W. of Sierra Nevada (S. of Spain) Geological Significance, by Rafael L. Torres-Roldán 1643 The very frequent
Geological Significance, by Rafael L. Torres-Roldán 1643 The very frequent presence of calcium-silicates and sometimes scapolite banded rocks in numerous alpujarride formations of the central and western regions of the Betic zone (South of Spain), is explained as the result of a metamorphic differentiation process from initially calcium-rich layers, in presence of anions CI, SO4, CO3, and so on. This geochemical peculiarity exists also in the evaporitic Permian formations of diverse units of internal zones. This fact allows to assimilate these two types of formations and gives a key for the stratigraphical analysis of the Betic Zone. Stratigraphy The Paleozoic
the stratigraphical analysis of the Betic Zone. Stratigraphy The Paleozoic in the Central Part of the Peruvian Subandean Belt: Some Recent Data, by Martin and Jorge Paredes Pacheco 1647 Triassic and Jurassic sediments are most probably absent from the Shira and Vilcabamba mountains, but a brackish upper Permian series was deposited that covers conformably a thick carbonate formation of lower Permian to Pennsylvanian age. No Mississippian has been found. During the lower and middle Paleozoic, a thin sequence was deposited in the Shira area; most of it is continental and volcanic. Meanwhile, thick marine partly fossiliferous series accumulated in the
volcanic. Meanwhile, thick marine partly fossiliferous series accumulated in the Vilcabamba area. The common limit between both areas is the Tambo-Perene WNW-trending faulted zone, that was reactivated during the Neogene orogenesis. Volcanology New Activity of the Nevados de Chillán (Central Chile), by Bernard Deruelle 1651 A new dome appeared in July of 1973 on the major axis of the elliptical caldera along which the Quaternary cones of the Nevados de Chillán are aligned. Gas was ejected as clouds of smoke and vapor. A short dacitic lava flow was emitted. Pedology The Distribution of the Stable Isotope 13C in the Organic
The Distribution of the Stable Isotope 13C in the Organic Matter of a Ferralitic Soil of Bahia State (Brazil), by Jean-Marie Fléchor and Boris Volkhoff 1655 In the organic matter of a humic ferrallitic soil, it was observed that the isotopic ratio 13C/12C is not the same in all the humic horizons. On the other hand, the humic fractions have in general different isotopic compositions and most of the latter change throughout the profile. All the variations are important and easily detectable. The differences were assumed to be associated with a modification of the constitutions. The 13C indicates then that
a modification of the constitutions. The 13C indicates then that the bound fulvic acids and humic acids are of the same nature but they are variable in kind according to the depth. The free fulvic acid fraction is particularly stable and very different when compared to the humic acids or bound fulvic acids. The Influence of Humic Substances on Clay Properties. Importance of the Manner of Preparation on the Hydration Properties of Montmorillonite-Humic Acid Associations, by Pierre Chassin, Brigitte Le Berre and Norio Nakaya 1659 Importance of the manner of preparation on the hydration properties of montmorillonite-humic acid associations. In
preparation on the hydration properties of montmorillonite-humic acid associations. In particular, for the same quantity of organic matter, the quantity of adsorbed water can be very different if the flocculation of humic acids is performed before or after the dehydration phase of the montmorillonite-acid humic associations. Paleontology Discovery of the Crocodilian Sebecus in the Miocene of Eastern Peru, by Eric Buffetaut and Robert Hoffstetter 1663 The snout of a sebecid crocodilian has been discovered in the Miocene of the Upper Ucayali basin (eastern Peru). It is identified as Sebecus (f. huilensis) Langston. This Neogene sebecid, which heretofore was known only
huilensis) Langston. This Neogene sebecid, which heretofore was known only from a lower jaw fragment and teeth, is more stably built than the Eocene S. icaeorhinus: the notch in the premaxillary for reception of a large lower tooth is remarkably deep. Botany Delimitation and Classification of the Strophariaceae Sing. and Smith (Agaricales) in the Light of New Research on the Structure of their Pigments, by Katia Gluchoff-Fiasson and Robert Kühner 1667 Systematic study of the distribution of styrylpyrones and derivatives among the Strophariaceae Sing, and Smith and related genera: taxonomic incidences. Vegetable Cytophysiology Autoradiographic Study of Protein Synthesis Recovery in
incidences. Vegetable Cytophysiology Autoradiographic Study of Protein Synthesis Recovery in Root Cells of Zea mays Embryos During Early Stages of Germination, by Roger Delteil 1673 Recovery of protein synthesis was studied in primary root of germinating Zea mays embryos. [H] leucine or [H] lysine was provided for two hours at 16°C to embryos excised from kernels at various times after the beginning of germination. Protein synthesis (probably dependent on long-lived mRNAs stocked in dormant embryo root cells) resumed during the first two hours of seed imbibition. Physiology Evidence of an Alpha Adrenergic Effect over Isolated Fat Cells of Canine Adipose
Alpha Adrenergic Effect over Isolated Fat Cells of Canine Adipose Tissue, by Michel Berlan 1677 Phentolamine, an alpha blocking agent, potentializes the adrenaline-gic-al lipolytic effect of isolated fat cells of Canine omental adipose tissue when their average diameter is greater than 80 μm. This effect can be found also in isolated fat cells of mesenteric adipose tissue, spontaneously less sensitive with catecholamines. Phenylephrine, alpha sympathomimetic, partially inhibits the lipolytic effect stimulated by isoprenaline. Uptake and Incorporation of Labeled Oleic Acid and Glycerol by Isolated and Perfused Liver of Wistar Rats, by Françoise Chanussot and Gerard Debref 1681 After perfusion by
by Françoise Chanussot and Gerard Debref 1681 After perfusion by oleic acid (9-10H) and glycerol (14C) previously starved Wistar Rats, the synthesis of hepatic TG and PL follows the two following different methods: — during the first minutes of perfusions, the most important method of synthesis of TG and especially of PL is a de novo synthesis utilizing glycerol and the exogenous AG. The TG synthesized are 18:1 18:1 18:1 and 16:0 18:1 18:2 the PL synthesized are PE, AP and LPC: — during perfusions of long duration (30, 60, 120 min.), the major method of synthesis of TG and
120 min.), the major method of synthesis of TG and PL is an active exchange of AG of the endogenous glycerolipids. The TG synthesized are 16:0 18:1 18:1 and 16:0 18:1 18:2 the PL synthesized are PE and PC. Insect Physiology Influence of Photoperiodism on the Length of the Wing of a Cricket from Algeria, by Jacques Rouault and Suzel Fautrel-Braesch 1685 The morphometric study of a cricket from the Haute Plateaux of Algeria is made by discriminant analyses with 15 characters. Different experimental populations are submitted to various photoperiods for two generations. Only the wing is sensitive to the
for two generations. Only the wing is sensitive to the photoperiod: its length reflects the conditions of life of parents and offspring without any connection with the problem of diapause. Effects of Irradiation of Bombyx mori Larvae on the Evolution of Ecdysteroid Titer in Hemolymph and Ecdysone Metabolism, by Madeleine Coulon and René Feyereisen 1699 Second and third instar larvae of B. mori show a peak of ecdysteroids in the hemolymph towards the end of each instar. Second instar larvae which are X-ray treated at 0 h die at the third ecdysis. In these larvae, titer and metabolism of ecdysone
third ecdysis. In these larvae, titer and metabolism of ecdysone is disturbed. Larvae X-ray treated at 24 h in the second instar mostly become permanent larvae of the third instar, having a very low level of circulating ecdysteroids, which hardly metabolize injected ecdysone. Biology Influence of Temperature on the Respiration of Pieris Brassicae (Lepidoptera) Diapausing and Non-Diapausing Pupae, by Jacques Fourche 1693 In Pieris non diapausing pupae the respiratory rate follows a sigmoid curve with respect to temperatures from 5 to 35 °C. A similar curve can be observed but only immediately after molt in diapausing pupae. When the steady
only immediately after molt in diapausing pupae. When the steady diapausing metabolism is established, respiratory rate follows an exponential curve. In this later case it is assumed that velocity of one respiratory enzyme is the limiting step; the access to substrates is then non limiting. Experimental Biology Osteopetrosis Cured by Allogenic Bone Marrow Injection in the "op" Rat, by René Moutier, Kiyoko Toyama and Henri Lamendin 1697 The cure of the osteopetrotic syndrome in "op" rats has been obtained by allogenic bone marrow injection following appropriate irradiation of the mutant recipients. Experimental Biology Mitotic Activity in Glandular Epithelium of the
recipients. Experimental Biology Mitotic Activity in Glandular Epithelium of the Small Intestine after Radio-frequency Lesions of the Hypothalamic Tubero-infundibular Region and Simultaneous Pinealectomy in the Rat, by Mauro Bindoni, Stefania Sianzani, Antonio Bava and Natalino Belluardo 1701 Radio-frequency lesions of the tubero-infundibular region of the hypothalamus and simultaneous pinealectomy are performed in Rats. The double operation is followed by a significant increase of mitotic rate in the small intestine glandular epithelium. This increase is higher than the addition of the effects that are caused by each operation. Oceanology Association of Stromatolitic Structures and of Encrusting Foraminifera in a Ferromanganese Crust
Stromatolitic Structures and of Encrusting Foraminifera in a Ferromanganese Crust with Granitic Core from the North Atlantic, by Andre Schaaf, Michel Hoffert, Anne-Marie Karpoff and Denis Wirrmann 1705 Encrusting benthic foraminifera are intimately associated with ferromanganese crusts which occur on fragments of Hercynian altered granodiorite. Paleontological evidence suggests that the crusts are recent and thus have formed rapidly, most likely in deep water bottoms of the Atlantic Ocean. Embryology Involution of the Mesonephros and Differentiation of the Epididymis in the Chick: an Immunohistological Study, by Yvon Croisille, Madeleine Gumpel-Pinot and Jean-Marie Gasc 1709 By means of purified Rabbit anti-adult Chicken
Jean-Marie Gasc 1709 By means of purified Rabbit anti-adult Chicken kidney antibodies two types of antigens have been identified in the mesonephros: one, localized in the cells of the proximal segment of the secretory tubules, the other characteristic of the collecting segments derived from the Wolffian duct. During the transformation of certain mesonephric tubules into ductuli efferentes and conjugentes of the epididymis, the collecting tubule antigen disappears, whereas the proximal secretory tubule antigen not only persists but can also be detected in the parietal layer of Bowman's capsules as they transform before connecting with the rete testis. Experimental Embryology Mesoderm
transform before connecting with the rete testis. Experimental Embryology Mesoderm and Primordial Germ Cells Induction by the Endoderm in Pleurodeles waltii (Urodele Amphibian): Evolution during Gastrulation, by Jean-Pierre Maufroid and Alfred Capuron. Blastula ectoderm is combined with dorsal or ventral endoderm from blastulae, gastrulae and early neurulae. In vitro culture reveals the presence of different mesodermal structures whose nature is connected with the endoderm origin site. Primordial germ cells differentiate essentially in the recombinates including ventral endoderm. The inducing capacity of this latter concerning germ cells is maximum at the beginning of gastrulation, then decreases during it and finally disappears
beginning of gastrulation, then decreases during it and finally disappears at the onset of neurulation. Ecology The Resistance of Chironomidae Orthocladiinae to Soil Desiccation, by Yannick-R. Delettre and Simone Bail Hot. Larvae of Parasmittia sp. effect the totality of their growth in winter, when the pioneer formation substratum (Armorican moorland) is saturated with water. In summer, they adopt a form of resistance in deeply placed cellules which enables them to support a desiccation reaching pF 6. The imagos emerge in autumn. Three years of trapping furnish similar results. Ecophysiology Study on the Nitrogen Content and the Composition of Amino-Acids in
on the Nitrogen Content and the Composition of Amino-Acids in the Tissues of some Armorican Littorinidae (Molluscs, Mesogastropods), by Jacques Daguzan. The nitrogen content is high in all the species of the family Littorinidae (Littorina neritoides, L. saxatilis, L. littorea, L. littoralis) which exist on the Brittany coasts. The composition of the amino-acids present in the tissues of animals is also rather homogeneous, the most important aminos of which are: aspartic acid, glutamic acid and glycine. Cystine seems to be more abundant in the species which inhabit the highest levels of the intertidal zone. Biochemistry Characterization of a 5a-Androstan-3β, 17β-Diol
of the intertidal zone. Biochemistry Characterization of a 5a-Androstan-3β, 17β-Diol Receptor in the Cytosol from Anterior Hypophysis of Prepubertal Male Rats, by Marise-Lise Thieulant, Suzanne Samperez and Pierre Jouan. The presence of a "specific receptor for 5a-androstan-3β,17β-diol (Dihydrodiol) in the pituitary cytosol from prepubertal male rats was demonstrated. Its characteristics were: KA = 5.2 107 M-, Ko = 1.9. 10-8 M, number of specific binding sites = 8.7. 10 14 moles per mg of proteins. Its sedimentation constant was 3 S. Competition assays showed that only 3β-diol itself and estrogens were able to compete for the binding sites for 3β-diol.
were able to compete for the binding sites for 3β-diol. Androgens, including 3β-diol, were inefficient. This receptor was found only in pituitary cytosol, it was missing from hypothalamic or cortical cytosols. This special localization seemed to foreshadow a specific role for 3β-diol in the anterior hypophysis. Bacteriology Problems Arising in Placentalase Isoelectric Points Determination, by Roger Labia and Michel Barthelemy. Analytical isoelectric focusing in polyacrylamide gels and preparative electrofocusing in density gradients may give very different pi determination for the same Placentalase. This difference seems due to a lack of enzyme migration in some parts of the cross-linked polyacrylamide gel.
enzyme migration in some parts of the cross-linked polyacrylamide gel. This migration appears easier in density gradient isoelectric focusing, and thus this technique yields more significant absolute pi values. Analytical isoelectric focusing should only be used for comparison studies. Genetics Study of HLA Groups in Child Developmental Psychoses and Hypothesis of Enzymopathy, by Bernard Golse, Pierre Debray-Ritzen, Jean Dausset, Marc Lipinski and Jacques Hors. The HLA typing (loci A and B) of a series of fifteen psychotic children has shown an increase of the frequency of both HLA-A9 and B5 antigens. These preliminary data and previous biochemical findings in psychotic
antigens. These preliminary data and previous biochemical findings in psychotic patients lead the authors to postulate the hypothesis of a qualitative or quantitative anomaly of the superoxide dismutase (SOD-2), the gene of which is situated on the same chromosome (sixth) as the HLA complex. Virology Chemical Induction of Murine C-Type Endogenous Viruses. Attempt at Discrimination Based on the pi of the p30 Polypeptide and on the Pattern of Cellular Alteration, by Ivan Laprevotte, Jean-Claude Chuat, Carmen Bernard, Martine Canivet and Catherine Pilon. Endogenous ecotropic and xenotropic murine C-type viruses induced in K-Balb-3T3 cells treated with iododeoxyuridine (IdU) were selected by
in K-Balb-3T3 cells treated with iododeoxyuridine (IdU) were selected by infection of appropriate indicator cells. The isoelectric point (pi) of the major viral polypeptide (p30) was found to be 6.1 for the ecotropic virus (class I), and 5.7 for the xenotropic virus (class II). An isoelectric form (iso p30) of pi 6.5 was observed in the initial induction peak. In addition, the pattern of cellular alteration in NRK cells at its onset varied according to the pseudotype, the class I pseudotype inducing round cell foci while the foci associated with the class II pseudotype consisted of fusiform cells. Cancerology Suppressor
the class II pseudotype consisted of fusiform cells. Cancerology Suppressor Effect on the Cytotoxicity of Lymphoid Cells from Mice Bearing a Syngeneic Tumor, by Nicole Schaaf-Laurent and Henri Flechet. When it is tested in vitro, the cytotoxic action of lymphocytes from mice bearing a syngeneic tumor (T2) varies with the age of the graft. At a time when it is very low, the lymphoid cells are cultivated for 3 days and then can be fractionated in two subpopulations on a glass bead column: a cytotoxic "non adherent" group of cells and an "adherent" group that inhibits the activity of the
and an "adherent" group that inhibits the activity of the first group when it is added to it. COMPTES RENDUS HEBDOMENAIRE DES SÉANCES DE L'ACADÉMIE DES SCIENCES CONTENTS VOLUME 284 — SECTION D No. 18 — SESSION OF MAY 9th 1977 Geochemistry Three Modes of Variation of Pure Water Permeability of Microfissured Granitic Specimens, by Joseph Baudracco. Variations of water permeability of microfissured rock specimens reveal three modes of behaviour which can be explained by the presence of mineral particles in fissures and by water adsorption on phyllic minerals. Geology From Caribbean to South and North American Cordilleras, by Jean
From Caribbean to South and North American Cordilleras, by Jean Aubouin. René Blanchet, Jean-Charles Carfantan, Claude Rangin, Jean-François Stephan and Marc Tardy 1749 The Caribbean Area is developed to the detriment of the North and South American Cordilleran system, favored by a succession of axial terminations of these Cordilleras. These are situated along the Huancabamba and Barquisimeto transverse structures in the Andes and along the Parras and Guatemala transverse structures in the Mexican Sierra Madre system. The Caribbean belt, which has evident alpine features, is thus situated in an intercontinental position, at the western end of the Tethys (Mesogean), cut
position, at the western end of the Tethys (Mesogean), cut through by the opening of the Atlantic. Petrography Relations between Deformation and Metamorphism in the Skarns of the Contact Aureole of the Querigut plutonic massif (Eastern Pyrenees), by Michel Aparicio 1753 The successive appearance of grossular, vesuvianite and wollastonite from a calcite + diopside + anorthite paragenesis is connected with the progressive deformation of the calcareous surroundings during the forced injection of the magma, the formation of a tectonic sheeting allowing the separation of carbon dioxide. Paleogeography Distribution of Paleoenvironments Relative to Dolomitic Formations in the Vittel-Lamarche area (Southwestern Vosges,