Gas chromatographic studies of derivatives of celluline-like substances.
Abstract Different aspects of the gas chromatographic determination of the celluline-like substances exhibiting specific cardiotonic activity are discussed. As this substances is isolated from frog skin and bladder, many impurities have to be considered. Determination of these samples, having a broad range of boiling points, was performed by means of programmed-temperature gas chromatography. Identification of unknown peaks was executed with the help of pure standard substances and retention indices.
A GENERALIZATION OF THE RETENTION INDEX SYSTEM INCLUDING LINEAR TEMPERATURE PROGRAMMED GAS-LIQUID PARTITION CHROMATOGRAPHY.
Abstract The different ways of describing peak positions on gas chromatograms are reviewed. The retention index is preferred to the theoretical nonane system and the relative retention. The equation given by Kovats for the calculation of the retention index in case of isothermal operation is transformed to a more general form to include also the case of linear temperature programmed operation. This generalized equation gives the same retention index for both ways of operation.
MENTAL HEALTH CASE MANAGEMENT IN CANADA: JOB DESCRIPTION ANALYSES
The purpose of this study was to examine case managers' (CM) job position descriptions through content analysis. There were 29 case manager job position descriptions examined. The job descriptions could be grouped into four categories: (1) what the individuals should bring to the position, (2) what they did as CM, (3) to whom they were accountable, and (4) what was valued. Themes included focus on client as individual, focus on the external/system, or outer-directed work, and the articulation point between the individual and broader system. The CM works directly and indirectly in the system and community through education, organizing, planning, and networking, as well as through provision of direct care to the individual client. The expectations of the positions are extensive.