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  • 1
    Electronic Resource
    Electronic Resource
    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
    Keywords: High pressure ; dielectric constants ; density ; acetonitrile ; temperature dependence ; Kirkwoodg factor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: 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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647050
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    MRI demonstration of subarachnoid neurocysticercosis simulating metastatic disease (1998)
    Springer
    Neuroradiology 40 (1998), S. 724-726 
    Details
    ISSN: 1432-1920
    Keywords: Key words Neurocysticercosis ; Subarachnoid space ; Spinal ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We present a patient with neurocysticercosis with spinal subarachnoid spread who presented with lower back pain and progressive numbness and weakness of the left leg. MRI of the spine simulated metastasis. MRI of the brain demonstrated a “bunch of grapes” appearance in the basal cisterns, characteristic of cysticercosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050672
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    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
    Keywords: 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
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 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.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240020503
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Decomposition of Composite Explosives Containing Ammonium Nitrate by transient adiabatic gas compression (1995)
    Weinheim : Wiley-Blackwell
    Propellants, Explosives, Pyrotechnics 20 (1995), S. 273-278 
    Details
    ISSN: 0721-3115
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The decomposition products of emulsion explosives and of other composite explosives containing ammonium nitrate, such as ANFO, were investigated. The compounds were thermolyzed at high temperature and pressure on the microsecond and millisecond time scales by adiabatic gas compression. It was found that the first step in emulsion decomposition is pyrolysis of the oil to form reactive intermediates like Hċ and CH3ċ. These reactive species are oxidized by the decomposition products of ammonium nitrate in a later sequence of reaction steps.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prep.19950200509
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    Paper (German National Licenses)
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