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  • 1
    Digitale Medien
    Digitale Medien
    Diets of early Miocene African hominoids (1977)
    [s.l.] : Nature Publishing Group
    Nature 268 (1977), S. 628-630 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] I have analysed 65 specimens of extant pongids and hylo-batids from the Musee Royal de 1'Afrique Centrale, the American Museum of Natural History and the US National Museum of Natural History. The sample includes 10 of the 11 recognised ape species12. The early Miocene fossil apes come from the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/268628a0
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  • 2
    Digitale Medien
    Digitale Medien
    Cell differentiation without morphogenesis in Dictyostelium discoideum (1976)
    [s.l.] : Nature Publishing Group
    Nature 262 (1976), S. 717-719 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Bonner2 reported that a proportion of amoebae of strain NC4 developed into large vacuolated stalk-like cells when plated on agar containing 1 mM cyclic AMP at cell densities that were too low to allow aggregation in controls without cyclic AMP. This observation was extended by Chia3 who showed that ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/262717a0
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  • 3
    Digitale Medien
    Digitale Medien
    Requirement for cell differentiation in Dictyostelium discoideum (1978)
    [s.l.] : Nature Publishing Group
    Nature 271 (1978), S. 58-60 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fig. 1 Induction of prespore vacuoles and stalk cells by cyclic AMP in cells plated at high density under Cellophane. Q Prespore vacuoles, no cyclic AMP; D, stalk cells, no cyclic AMP; o, prespore vacuoles + cyclic AMP; o, stalk cells + cyclic AMP. HM1 cells (HM1 is an acriflavin resistant strain ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/271058a0
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  • 4
    Digitale Medien
    Digitale Medien
    The pressure dependence of the dielectric constant and density of acetonitrile at three temperatures (1977)
    Springer
    Journal of solution chemistry 6 (1977), S. 357-367 
    Details
    ISSN: 1572-8927
    Schlagwort(e): High pressure ; dielectric constants ; density ; acetonitrile ; temperature dependence ; Kirkwoodg factor
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The static dielectric constant of liquid acetonitrile is reported at 10, 25, and 40°C and at pressures up to 3 kbar. Densities of pure acetonitrile were measured where needed in order to analyze the dielectric measurements using the Kirkwood-Fröhlich equation. The Kirkwood correlation factorg K was found to be less than unity with a positive temperature but negative pressure coefficient, suggesting an increasing anticorrelation of dipoles with decreased temperature and increased pressure. Theg K factors are analyzed by a dipole pair-bonding model as outlined by Dannhauser and Flueckinger in which the lowg K values are attributed to the presence of dimers consisting of completely anticorrelated dipoles. The implication of this model on other measurements, especially MNR relaxation studies, is examined.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00647050
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  • 5
    Digitale Medien
    Digitale Medien
    Fermentative digestion of food in the colobus monkey,Colobus polykomos (1976)
    Springer
    Cellular and molecular life sciences 32 (1976), S. 485-487 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Fermentation of leafy food occurs in the enlarged saccus gastricus of the colobus monkey with the formation of volatile fatty acid, as in the rumen of ruminant animals. About half of the digestible organic matter and cellulose of the diet is digested in this way.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01920812
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  • 6
    Digitale Medien
    Digitale Medien
    The assay of antibiotics in pharmaceutical preparations using reverse-phase HPLC (1979)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 2 (1979), S. 211-215 
    Details
    ISSN: 0935-6304
    Schlagwort(e): Liquid chromatography, HPLC ; Reverse phase separation of 9 antibiotics ; Down to 5 min analysis time, less than 4% repeat variation ; Precise analytical conditions given ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Chromatographic methods are presented for the determination of chloramphenicol, erythromycin, tyrothricin, nystatin, penicillin, streptomycin, sulphanilamides and nitrofurans, in some pharmaceutical formulations. The methods have been applied in routine analysis and are in general capable of distinguishing the main antibiotic from decomposition products and likely congeners.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/jhrc.1240020503
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