jeanflop/post_ocr_correction2 huggingface dataset:
cephalosporanic acid affords derivatives with syn or anti configuration. While the anti isomers display low antibiotic activities, the syn isomers possess a surprisingly high efficiency against gram negative bacteria, enhanced by a factor of 10 to 100 as compared with the cephalosporins known at the moment. Microbiology A Study of Bacteriophages of Rhizobium meliloti, by Michel Werquin, Mohamed Tahar Ben Brahim and Draga Krsmanovic-Simic. Back to our technique of phage sensitization by protein fixation with the aid of coupling reagents, and of their inactivation by the specific anti-protein antibodies, comparative studies were made on phages having a morphologically different tail. Here we report the results concerning the ultramicroscopic observation of four phages, the efficiency and the rate of their sensitization, and the possibility of their respective neutralization. Virology Relationships Between the Ultrastructure of Different Phages and of Protected Protein-Phage Complexes with their Specific Neutralization, by Michele German, Albert German and Marie-Joseph Danse. Among the bacteriophages in our collection, seven are studied which can lyse Rhizobium meliloti in a liquid medium in the absence of Ca2+ or Mg2+. The total of their properties clearly differentiates them from phages which are unable to lyse Rhizobium meliloti under identical conditions. COMPTES RENDUS HEBDOMADAIRES DES SÉANCES DE L'ACADÉMIE DES SCIENCES CONTENTS VOLUME 284 — SECTION D No. 19 — SESSION OF MAY 16th 1977 Petrology CO2, H2O and the Genesis of Alkali Basalts of the Massif Central (France), by Emmanuel Berger. Free CO2 resulting from decarbonation of the upper mantle during adiabatic uprising and, to a lesser degree, pre-existing H2O traces (which probably resulted from the breakup of phlogopite) together allowed partial melting which in turn generated the French Massif Central alkali basalts. Geology The Time Factor and Abundance of Granitoids in Folded Chains, by Boris Choubert. Setting up of a tectonic map of the continents and the measurement of the areas occupied by the granitoids reveal a strong correlation between the abundance and radiometric age of these rocks. What is the significance of this statement? Structural Geology Tethyan-Atlantic Alternate Pulsations: a Key to Earth History, by Henri Termier and Geneviève Termier. Here is
DES SÉANCES DE L'ACADÉMIE DES SCIENCES CONTENTS VOLUME 284 — SECTION D No. 19 — SESSION OF MAY 16th 1977 Petrology CO2, H2O and the Genesis of Alkali Basalts of the Massif Central (France), by Emmanuel Berger. Free CO2 resulting from decarbonation of the upper mantle during adiabatic uprising and, to a lesser degree, pre-existing H2O traces (which probably resulted from the breakup of phlogopite) together allowed partial melting which in turn generated the French Massif Central alkali basalts. Geology The Time Factor and Abundance of Granitoids in Folded Chains, by Boris Choubert. Setting up of a tectonic map of the continents and the measurement of the areas occupied by the granitoids reveal a strong correlation between the abundance and radiometric age of these rocks. What is the significance of this statement? Structural Geology Tethyan-Atlantic Alternate Pulsations: a Key to Earth History, by Henri Termier and Geneviève Termier. Here is an attempted global and synoptic history of two ancient structures which underwent alternate phases of opening and closing. Such a balancing has conditioned relief and climate as well as the peopling of seas and emerged lands during the whole of geological times. Geology-Prehistory Discovery of an old lithic industry in situ in the Hadar formation, Central Afar, Ethiopia, by Hélène Roche and Jean-Jacques Tiercelin. During the fifth International Afar Expedition (1976), some pebble tools (choppers, polyhedrals, cores, flakes) were discovered in two conglomerates of the upper part of the Hadar formation. These conglomerates, included in deltaic and marsh units, have a possible age of 2.6 M years. Volcanology A Post-Villafranchian Pumice Flow on the Eastern Side of Mont-Dore (Massif Central), by Jean-Claude Besson, Meng Hour Ly, Jean-Marie Cantagrel, Alain de Goer de Herve and Pierre M. Vincent. Outcrops of a pumice flow deposit of trachytic composition, channelled in old valleys on the eastern flank of Mont-Dore, were found as far away as Neschers, not far from the Allier river, 30 km from the suspected vents in Sancy massif. Potassium-Argon measurements give ages c.a. 800,000 Y. Mycology Growth and sporulation of Entomophthora virulenta Hall and Dunn in batch culture, by Jean-Paul
situ in the Hadar formation, Central Afar, Ethiopia, by Hélène Roche and Jean-Jacques Tiercelin. During the fifth International Afar Expedition (1976), some pebble tools (choppers, polyhedrals, cores, flakes) were discovered in two conglomerates of the upper part of the Hadar formation. These conglomerates, included in deltaic and marsh units, have a possible age of 2.6 M years. Volcanology A Post-Villafranchian Pumice Flow on the Eastern Side of Mont-Dore (Massif Central), by Jean-Claude Besson, Meng Hour Ly, Jean-Marie Cantagrel, Alain de Goer de Herve and Pierre M. Vincent. Outcrops of a pumice flow deposit of trachytic composition, channelled in old valleys on the eastern flank of Mont-Dore, were found as far away as Neschers, not far from the Allier river, 30 km from the suspected vents in Sancy massif. Potassium-Argon measurements give ages c.a. 800,000 Y. Mycology Growth and sporulation of Entomophthora virulenta Hall and Dunn in batch culture, by Jean-Paul Latge. Fermented cultures of Entomophthora virulenta showed an exponential phase with a specific growth rate of 0.14 h-. The deceleration phase was 4 times longer than the exponential phase. Sexual sporulation occurred at the end of the deceleration phase. A technique of medium replacement demonstrated that any lack of nutritive balance induced the sporulation. Plant Histophysiology Effects of Auxins and Antiauxins upon the Neoformation of Vegetative or Inflorescence Buds of Brassica oleracea L., var botrytis, by Jacques Margara. Several auxins and antiauxins induce bud neoformation on explants of cauliflower heads. The percentage of neoformations is increased by traumatic acid. According to its concentration, gibberellin A3 stimulates or inhibits bud neoformation induced by auxin. Several antiauxins can sporadically elicit flower neoformation without previous head formation. Plant Physiology Variation of the Isotopic Composition of Organic Oxygen of Several Plants as a Function of their Environment, by André Ferhi and René Letolle. Oxygen isotope content of organic matter taken from plants grown under various climatic conditions shows important variations related to the ecology and perhaps to the photosynthetic pathways. 180/160 Ratio in Plant Organic Substances, by Jacques Bricout. The ratio of the two stable isotopes of oxygen 180/160 was shown to be higher
balance induced the sporulation. Plant Histophysiology Effects of Auxins and Antiauxins upon the Neoformation of Vegetative or Inflorescence Buds of Brassica oleracea L., var botrytis, by Jacques Margara. Several auxins and antiauxins induce bud neoformation on explants of cauliflower heads. The percentage of neoformations is increased by traumatic acid. According to its concentration, gibberellin A3 stimulates or inhibits bud neoformation induced by auxin. Several antiauxins can sporadically elicit flower neoformation without previous head formation. Plant Physiology Variation of the Isotopic Composition of Organic Oxygen of Several Plants as a Function of their Environment, by André Ferhi and René Letolle. Oxygen isotope content of organic matter taken from plants grown under various climatic conditions shows important variations related to the ecology and perhaps to the photosynthetic pathways. 180/160 Ratio in Plant Organic Substances, by Jacques Bricout. The ratio of the two stable isotopes of oxygen 180/160 was shown to be higher in different organic substances derived from plants than in their water. This observation correlates the general assumption that the oxygen in vegetal organic material is derived from carbon dioxide. Some differences in the "O content were also observed in organic substances which are biosynthesized by different pathways. Zoology Elementary microanalysis of the shell of Euglypha (Testacea), by Colette Jeanson and Marie-Madeleine Couteaux. Analyses preserving the structure of the shells were carried out with the microprobe analyzer and scanning electron microscope probe. The result shows nine elements: Al, Si, and Fe in greater quantity and traces of Ca, Ti, S, Ni, P, Cu. Entomology Influence of temperature and food on caste determination in the Ant Aphaenogaster senilis, by André Ledoux 1899 Inhibition due to the Queen can be stopped either by the action of the thermoperiod with important differences of temperature or by the adjunction of vitamins in the normal food. In the colonies without queen, the number of new winged females is increased by the action of these two factors. Insects Physiology Study of the Influence of Diapause on the Acquisition of Flight Capability in Colorado Potato Beetle: Leptinotarsa decemlineata (Say), by Michel Termier 1903 The method consists to observe
of the shell of Euglypha (Testacea), by Colette Jeanson and Marie-Madeleine Couteaux. Analyses preserving the structure of the shells were carried out with the microprobe analyzer and scanning electron microscope probe. The result shows nine elements: Al, Si, and Fe in greater quantity and traces of Ca, Ti, S, Ni, P, Cu. Entomology Influence of temperature and food on caste determination in the Ant Aphaenogaster senilis, by André Ledoux 1899 Inhibition due to the Queen can be stopped either by the action of the thermoperiod with important differences of temperature or by the adjunction of vitamins in the normal food. In the colonies without queen, the number of new winged females is increased by the action of these two factors. Insects Physiology Study of the Influence of Diapause on the Acquisition of Flight Capability in Colorado Potato Beetle: Leptinotarsa decemlineata (Say), by Michel Termier 1903 The method consists to observe flight initiation on glued beetle. Those animals were of various ages and have been raised in short or long day. The Leptinotarsa of long day condition avoid diapause and they become quickly able of good flight performances. Those of short day condition are obliged to enter in diapause and perform, very much later, not as good flight performances as those of the other category. Incorporation of tritiated Uridine in the ovarian cells of an adult insect, Ulopa reticulata Fab. (Homoptera Auchenorrhyncha), by Claude Hamon 1907 The tritiated Uridine incorporation in the acrotrophic ovary of Ulopa reticulata shows that there are two different organs for the RNA of the ovocyte cytoplasm: the ovocyte nucleus, and the trophic cells (by way of the trophic cords). Endocrinology Presence of neurosensitive contacts and of a new type of synapse in the pineal gland of a lizard (Lacerta muralis Laurenti) by André Petit and Berthe Vivien-Roels 1911 The neurosensitive synapses between photoreceptor cells and nerve ganglion cells are numerous enough to constitute an additional argument for a photosensitive function of the pineal gland. A new type of synapse, observed between the secretory rudimentary photoreceptor cells and nerve ganglion cells presents a direct relation from cells
very much later, not as good flight performances as those of the other category. Incorporation of tritiated Uridine in the ovarian cells of an adult insect, Ulopa reticulata Fab. (Homoptera Auchenorrhyncha), by Claude Hamon 1907 The tritiated Uridine incorporation in the acrotrophic ovary of Ulopa reticulata shows that there are two different organs for the RNA of the ovocyte cytoplasm: the ovocyte nucleus, and the trophic cells (by way of the trophic cords). Endocrinology Presence of neurosensitive contacts and of a new type of synapse in the pineal gland of a lizard (Lacerta muralis Laurenti) by André Petit and Berthe Vivien-Roels 1911 The neurosensitive synapses between photoreceptor cells and nerve ganglion cells are numerous enough to constitute an additional argument for a photosensitive function of the pineal gland. A new type of synapse, observed between the secretory rudimentary photoreceptor cells and nerve ganglion cells presents a direct relation from cells showing an active secretory function to the central nervous system. Marine Biology Experimental Confirmation of the Role of a Benthic Diatom, Navicula ramosissima (Agardh) Cleve, in the Secretion of Mucoidal Materials Which Stabilize Muddy Marine Littoral Flats, by Jean-Michel Robert and Dominique Gouleau 1915 Maintained in unialgal culture on an artificial substratum, Navicula ramosissima (Agardh) Cleve constitutes a colonial "archeothallus". Observations made with the scanning electron microscope allow us to follow the formation of the mucoidal threads which constitute it. This study enables us to confirm that the mucoidal materials are in fact produced by the Diatoms and are effective stabilizers of the muddy marine littoral flats in the Bay of Bourgneuf. Developmental Biology Monovalent Fragments of Rabbit Anti-F9 Immuno-Globulins Prevent the Formation of Blastocyst in the Mouse, by Charles Babinet, Rolf Kemler, Philippe Dubois and François Jacob 1919 Fab fragments of a Rabbit anti-F9 serum do not disturb cleavage of Mouse embryos in culture but prevent blastocyst formation. This effect is reversible for a few hours. It is observed neither with Fab fragments directed against another surface antigen of blastomers nor with monovalent concanavalin A. Radiobiology Interaction Between Thymic Cells and Hemopoietic Stem Cells. Enhanced Repopulation of the Irradiated
artificial substratum, Navicula ramosissima (Agardh) Cleve constitutes a colonial "archeothallus". Observations made with the scanning electron microscope allow us to follow the formation of the mucoidal threads which constitute it. This study enables us to confirm that the mucoidal materials are in fact produced by the Diatoms and are effective stabilizers of the muddy marine littoral flats in the Bay of Bourgneuf. Developmental Biology Monovalent Fragments of Rabbit Anti-F9 Immuno-Globulins Prevent the Formation of Blastocyst in the Mouse, by Charles Babinet, Rolf Kemler, Philippe Dubois and François Jacob 1919 Fab fragments of a Rabbit anti-F9 serum do not disturb cleavage of Mouse embryos in culture but prevent blastocyst formation. This effect is reversible for a few hours. It is observed neither with Fab fragments directed against another surface antigen of blastomers nor with monovalent concanavalin A. Radiobiology Interaction Between Thymic Cells and Hemopoietic Stem Cells. Enhanced Repopulation of the Irradiated Thymus, by Richard Daculsi, Elisabeth Legrand and Jean-François Duplan 1923 In irradiated mice engrafted with hemopoietic cells, the thymus is repopulated more rapidly by bone marrow-derived than by spleen-derived cells. Admixing thymic cells with the restorative suspension stimulates the thymic repopulation by spleen-derived cells whereas it has no effect on the repopulation by bone marrow-derived cells. Biochemistry Differential Thermal Analysis of the Organic Component of the Bone, by Guy Perinet, Raymond Lafont et Jean Amic 1927 Thermal decomposition analysis of Bovine femur bone has been carried out by means of a Micro Differential Thermal Analyser. The analysis of both thermograms and amino acid compositions has revealed the complexity of collagen degradation mechanisms. Pharmacology Gastric Ulcerative Lesions in the Rat: New Experimental Model and Tentative With a Triterpen Agent, by Christine Lefournier, Alain Poizot and Paul de Saint-Maur 1931 An experimental model using restricted diet and exposure to cold for several weeks was devised. Following a two-week treatment with a triterpen healing agent, the rate of ulcerative lesion was significantly decreased. Microbiology New Contribution of Scanning Electron Microscopy to the Study of Yeasts of Protoplasts, by Michel Miegeville and Odile Morin 1935 Study by scanning electron microscopy enables us to describe
the repopulation by bone marrow-derived cells. Biochemistry Differential Thermal Analysis of the Organic Component of the Bone, by Guy Perinet, Raymond Lafont et Jean Amic 1927 Thermal decomposition analysis of Bovine femur bone has been carried out by means of a Micro Differential Thermal Analyser. The analysis of both thermograms and amino acid compositions has revealed the complexity of collagen degradation mechanisms. Pharmacology Gastric Ulcerative Lesions in the Rat: New Experimental Model and Tentative With a Triterpen Agent, by Christine Lefournier, Alain Poizot and Paul de Saint-Maur 1931 An experimental model using restricted diet and exposure to cold for several weeks was devised. Following a two-week treatment with a triterpen healing agent, the rate of ulcerative lesion was significantly decreased. Microbiology New Contribution of Scanning Electron Microscopy to the Study of Yeasts of Protoplasts, by Michel Miegeville and Odile Morin 1935 Study by scanning electron microscopy enables us to describe with precision the morphology of protoplasts. We can confirm that the wrinkles more or less perceptible on the protoplasts studied, do belong to the morphology of those just mentioned, that the presence or the absence of globulous component is connected with the physiological activity of the cell and that it is possible to distinguish the different protoplasts thanks to their morphological aspect. Applied microbiology Steroids “survival factors” of yeasts during the process of alcoholic fermentation of grape must, by Suzanne Lafon-Lafourcade, François Larue, Paul Brechot and Pascal Riberau-Gayon 1939 Certain sterols (ergosterol) on one hand, oleanolic acid on the other, are survival factors of the yeast under certain wine-making conditions; they do not increase the growth rate of the cells, but allow them to remain in a viable state for a longer time and so prolong their fermenting activity. Each of them acts in a different way. Virology Protection Afforded by a Purified Neuraminidase in Intranasally Vaccinated Mice to Aerosol Virus Challenge, by Chantal Bottex, Daniel Robert and Robert Fontanges 1943 An intranasal immunization with a A/PR8/34-isolated NA, protected mice as well as the whole virus and A/Hong Kong/1/68 virus against a subsequent infection with mice-adapted A/PR8/34 strain. A Yam
is possible to distinguish the different protoplasts thanks to their morphological aspect. Applied microbiology Steroids “survival factors” of yeasts during the process of alcoholic fermentation of grape must, by Suzanne Lafon-Lafourcade, François Larue, Paul Brechot and Pascal Riberau-Gayon 1939 Certain sterols (ergosterol) on one hand, oleanolic acid on the other, are survival factors of the yeast under certain wine-making conditions; they do not increase the growth rate of the cells, but allow them to remain in a viable state for a longer time and so prolong their fermenting activity. Each of them acts in a different way. Virology Protection Afforded by a Purified Neuraminidase in Intranasally Vaccinated Mice to Aerosol Virus Challenge, by Chantal Bottex, Daniel Robert and Robert Fontanges 1943 An intranasal immunization with a A/PR8/34-isolated NA, protected mice as well as the whole virus and A/Hong Kong/1/68 virus against a subsequent infection with mice-adapted A/PR8/34 strain. A Yam Mosaic (Dioscorea cayenensis) Caused by a Filamentous Virus, in Ivory Coast, by Jean-Claude Thouvenel and Claude Fauquet 1947 A filamentous virus causes a yam mosaic that attacks almost all Dioscorea cayenensis in Ivory Coast. It was possible to transmit this virus only to Dioscoreaceae. This paper reports the biological properties of the virus, the clarification and purification tests, the electron microscope observations and the aphid transmission. This virus seems to be a new virus. The Protein Subunit of Beet Necrotic Yellow Vein Virus (BNYVV). Molecular Weight Estimation and Amino-acid Composition, by Charles Putz, Daniel Collot and Remy Peter 1951 By polyacrylamide gel electrophoresis it was possible to estimate the apparent molecular weight of the protein of the French BNYVV isolate to 21,000 + 1,000 daltons. This protein, whose composition is distinctly marked by the absence of cysteine, contains about 197 amino-acid residues. The N-terminal extremity of the protein chain seems to be acetylated. These results will allow the further study of the BNYVV structure. Immunochemistry Antigen Binding Capacity of Lobster Muscle Arginine Kinase and of its Cyanogen Bromide Fragments, by Yves Benyamin, Yvonne Robin and Frangoise Regnouf 1955 The antigenic saturation of lobster arginine kinase (38 000 daltons) by its
of the virus, the clarification and purification tests, the electron microscope observations and the aphid transmission. This virus seems to be a new virus. The Protein Subunit of Beet Necrotic Yellow Vein Virus (BNYVV). Molecular Weight Estimation and Amino-acid Composition, by Charles Putz, Daniel Collot and Remy Peter 1951 By polyacrylamide gel electrophoresis it was possible to estimate the apparent molecular weight of the protein of the French BNYVV isolate to 21,000 + 1,000 daltons. This protein, whose composition is distinctly marked by the absence of cysteine, contains about 197 amino-acid residues. The N-terminal extremity of the protein chain seems to be acetylated. These results will allow the further study of the BNYVV structure. Immunochemistry Antigen Binding Capacity of Lobster Muscle Arginine Kinase and of its Cyanogen Bromide Fragments, by Yves Benyamin, Yvonne Robin and Frangoise Regnouf 1955 The antigenic saturation of lobster arginine kinase (38 000 daltons) by its specific antibodies has been studied. It was found that seven antigenic binding sites are simultaneously reactive on the surface of the enzyme in the presence of a large excess of antibodies or of their Fab fragments. After cyanogen bromide cleavage, the antigenic reactivity is distributed on several fragments of various sizes. Cancerology Interdependent Action of Nickel Sulphate and X-Rays on Human Lymphoblastoid Leukemic Cells, by Jacques Bensimon 1959 In a first experiment, cells were cultured in media supplemented by nickel sulphate, irradiated in the same media and cultured in the same media after irradiation. In a second experiment, cells were cultured during 18 hrs. in media supplemented by nickel sulphate, and then cells were washed and cultured in normal media where they were irradiated. The nickel sulphate toxicity appears as a increasing function of the nickel sulphate concentration and the nickel sulphate action endurance. The nickel sulphate toxic effect is amplified by X-Rays. This amplification is a time function that depends on the X-Ray dose, nickel sulphate concentration and period of time from the outset of culture to the irradiation. The nickel sulphate toxic effect appears faster when nickel works after X-Rays. COMPTES RENDUS HEBDOMENAIRE DES SÉANCES DE L'ACADÉMIE DES