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  • 1990-1994  (2)
  • Cell viability  (1)
  • Polyethyleneimine (PEI) cellulose
  • Thin-layer chromatography
  • 1
    Electronic Resource
    Electronic Resource
    Sequential changes on23Na MRI after cerebral infarction (1993)
    Springer
    Neuroradiology 35 (1993), S. 416-419 
    Details
    ISSN: 1432-1920
    Keywords: 23Na MRI ; Cerebral infarction ; Cell viability ; Cerebral oedema
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract 23Na MRI changes from the acute to chronic phase were investigated in seven patients with cerebral in-farcts. They showed no signal increase during the first 13 h after the stroke and revealed a definite signal increase thereafter. This reached a maximum 45–82 h after stroke and became slightly less marked in the subactue and chronic phases, probably as a result of disappearance of cerebral oedema. In the early acute phase of stroke,23Na MRI appears to fail to demonstrate Na+ increases in the ischaemic area, due presumably to the invisibility on MRI of intracellular23Na in the intact brain. The increase more than 13 h after stroke, during which ischaemic cells are likely to die, is presumably because of increased visibility of intracellular23Na in the dead cells.23Na MRI is apparently insensitive to early ischaemic changes, but may be useful for assessing the cell viability in the ischaemic brain.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00602819
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Chromatography of inorganic ions on diethyl-(2-hydroxy-propyl)aminoethyl cellulose layers in hydrochloric acid and in HCl-ammonium chloride media (1991)
    Springer
    Chromatographia 31 (1991), S. 60-62 
    Details
    ISSN: 1612-1112
    Keywords: Thin-layer chromatography ; Diethyl-(2-hydroxy-propyl)aminoethyl (QAE)-cellulose ; Hydrochloric acid and chloride media ; Inorganic ions ; Re(VII)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Thin-layer chromatographic behavior of 49 inorganic ions has been systematically studied on diethyl-(2-hydroxy-propyl)aminoethyl (QAE)-cellulose, a strongly basic anion exchanger, in aqueous hydrochloric acid and in acid-ammonium chloride media (0.01 to 1.0 mol dm−3). Aspects of the adsorption behavior of the ions on the cellulose are compared with those on other anion exchangers in the same eluent system. Feasibilities of separation of multicomponent mixtures are proposed on QAE-cellulose in both media. In particular, the selective separation of Re(VII) from many other ions can be accomplished on these systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02290497
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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