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  • Analytical Chemistry and Spectroscopy  (2)
  • Chloroplast (serine acetyltransferase)  (1)
  • Chromosome 8  (1)
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Materialart
Erscheinungszeitraum
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    The rib gap anomaly in partial or mosaic trisomy 8 (1988)
    Springer
    Skeletal radiology 17 (1988), S. 251-254 
    Details
    ISSN: 1432-2161
    Schlagwort(e): Rib gaps ; Skeletal anomalies ; Chromosome 8 ; Mosaicism ; Partial trisomy
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Gaps in the first ribs were observed in two children, one with partial and the other with mosaic trisomy for chromosome 8. The sign may be considered in conjunction with other features as a relative indication for chromosomal studies.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00401806
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Intracellular localization of serine acetyltransferase in spinach leaves (1982)
    Springer
    Planta 155 (1982), S. 321-327 
    Details
    ISSN: 1432-2048
    Schlagwort(e): Chloroplast (serine acetyltransferase) ; Cysteine ; Serine acetyltransferase ; Spinacia
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Intact chloroplasts isolated from spinach leaves by a combination of differential and Percoll density gradient centrifugation and free of mitochondrial and peroxisomal contamination contained about 35% of the total leaf serine acetyltransferase (EC 2.3.1.30) activity. No appreciable activity of the enzyme could be detected in the gradient fractions containing broken chloroplasts, mitochondria, and peroxisomes. L-cysteine added to the incubation mixture at 1 mM almost completely inhibited serine acetyltransferase activity, both of leaf and chloroplast extracts. D-cysteine was much less inhibitory. L-cystine up to 5 mM and O-acetyl-L-serine up to 10 mM had no effect on the enzyme activity. When measured at pH 8.4, the enzyme extracted from the leaves had a K m for L-serine of 2.4, the enzyme from the chloroplasts a K m of 2.8 mM.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00429459
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    A novel hybrid mass spectrometer (1989)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 3 (1989), S. 62-66 
    Details
    ISSN: 0951-4198
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: A new hybrid mass spectrometer of BEQiQu geometry (B, magnetic sector; E, Electric sector; Qi, quistor; Qu, quadrupole mass filter) is described. The high resolution stage (BE) is coupled to a quistor via a series of deceleration lenses, and this is followed by a mass-analysing quadrupole. This configuration enables the storing of ions, investigation of their gas-phase chemistry and the subsequent identification of the resulting fragment or product ions.
    Zusätzliches Material: 12 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/rcm.1290030303
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    A deceleration lens system for hybrid mass spectrometers (1989)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 3 (1989), S. 417-419 
    Details
    ISSN: 0951-4198
    Schlagwort(e): Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: A simple and efficient deceleration system for the coupling of magnetic and electric sector instruments to quadrupole analyzers is described. The trasnsmission efficiency of the system appears to be at least 80% or better as the ions are decelerated from 3 ke V to 30 eV (a deceleration factor of 1:100). No mass discrimination was observed in the range up to mass 1000.
    Zusätzliches Material: 6 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/rcm.1290031203
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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