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  • 1
    Digitale Medien
    Digitale Medien
    Fertilization and cleavage of the human ovumin vitro (1976)
    Springer
    Bulletin of experimental biology and medicine 81 (1976), S. 451-453 
    Details
    ISSN: 1573-8221
    Schlagwort(e): human ovum ; fertilization and development in vitro
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract A method of cultivating and fertilizing human ova obtained from ovaries removed at operation is described. A special method of sampling active spermatozoa was used for fertilization. Zygote formation was observed 24–36 h after fertilization of the ripe ova, an embryo of the two-cell stage was formed after 36–40 h, and an embryo at the four-cell stage after 48 h. The number of blastomeres reached 8 after 60–64 h, and after approximately 100–120 h the embryos reached the morula stage. The results provide wide scope for the study of the physiology and pathology of early human embryonic development.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00804947
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Dipole moments of the carbonyl groups in cyclic β-diketones from IR spectroscopy data (1995)
    Springer
    Russian chemical bulletin 44 (1995), S. 670-677 
    Details
    ISSN: 1573-9171
    Schlagwort(e): IR spectroscopy ; dipole moments ; coplanar arrangement ; carbonyl groups ; 2-arylindan-1,3-diones
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract The αCO angles between the carbonyl groups and the dipole moments of a number of 2-arylindan-1,3-diones were determined from the data of IR spectroscopy. The effects of substituents on αCO depending on their positions and inductive factors were found. It was established that the interaction between the vibrations of the carbonyl groups depends on both the αCO angle or the ΣμCO dipole moment and the coplanar arrangement of these groups.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00698501
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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