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  • 1
    Electronic Resource
    Electronic Resource
    Effect of Freezing on γ-Aminobutyric Acid Levels in Human Cerebrospinal Fluid (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 37 (1981), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract Using a radioreceptor assay, the concentration of γ-aminobutyric acid (GABA) in human cerebrospinal fluid (CSF) was found to be elevated significantly following a single deep-freeze to –70°C and thaw. Mean CSF GABA (± SD) in unfrozen CSF was 173 ± 73 pmol/ml (n= 24). After a single deep-freeze, the mean level was 243 ± 106 pmol/ml (p 〈 0.02). Subsequent freeze-thaw cycles resulted in further irregular and unpredictable elevations in CSF GABA. Mean level after two freezes was 379 ± 125 pmol/ml and after three freezes 654 ± 411 pmol/ml. These changes could result in the incorrect interpretation of results in patients suffering from neurological diseases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1981.tb04493.x
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  • 2
    Electronic Resource
    Electronic Resource
    Grain isozyme and ribosomal DNA variability in Hordeum spontaneum populations from Israel (1992)
    Springer
    Theoretical and applied genetics 84 (1992), S. 313-322 
    Details
    ISSN: 1432-2242
    Keywords: Hordeum ; Grain ; Isozymes ; Ribosomal DNA ; Genetic adaptation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Grain isozyme and ribosomal DNA (rDNA) variability was examined in Hordeum spontaneum populations sampled from 27 geographical sites in Israel. Considerable phenotypic variability was observed with variants of ADH1, EST3, EST10, BMY1 and WSP detected, which are not available in the H. vulgare gene pool. Seven new rDNA phenotypes were detected in the H. spontaneum populations. Shannon's index of diversity was used to partition the total phenotypic variation into between and within population components. Most of the variation occurred between H. spontaneum populations. The distribution of both grain isozyme and rDNA phenotypes was non-random and correlated with a range of ecogeographical factors. In particular, the G phenotype of BMY1 was restricted to the Negev Desert and Dead Sea regions of Israel. Over 78% of the variation in the frequency of this particular phenotype could be explained by the number of rainy days per year and mean temperature in January. This suggests that variation at this locus or at loci linked to it may be of adaptive significance and of value in the introgression of genes controlling abiotic stress tolerance from H. spontaneum into the H. vulgare gene pool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00229489
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  • 3
    Electronic Resource
    Electronic Resource
    Selection for yield and yield components in the early generations of a potato breeding programme (1986)
    Springer
    Theoretical and applied genetics 73 (1986), S. 218-222 
    Details
    ISSN: 1432-2242
    Keywords: Solanum tuberosum ; Selection efficiency ; Potato breeding ; Yield ; Yield components
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A number of unselected potato (Solanum tuberosum L.) clones were grown at two locations (a seed site and a ware site) in three consecutive years. The repeatability of total yield and yield components in the first two clonal years was compared with the same characters recorded in the third clonal year. Selection for yield in the first clonal year was only marginally more effective than a random reduction in number of genotypes, while selection in the second clonal year appeared to be somewhat more effective as judged by performance in the third clonal year. The inefficiency of selection in the first clonal year was ascribed, at least in part, to the inaccuracy of yield assessment as well as the “carry-over” effect of the mother tubers. Correlations of total yield were higher between different years in the same location than between different locations. Selection under growing conditions suitable for production of seed tubers tended to result in selection of early maturing clones which would not necessarily be optimal for ware growing conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00289277
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  • 4
    Electronic Resource
    Electronic Resource
    Book review (1991)
    Springer
    Clinical autonomic research 1 (1991), S. 337-337 
    Details
    ISSN: 1619-1560
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01819841
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Skin layer effects on the diffusion of carbon tetrachloride into injection moulded polypropylene studied by 1H NMR microimaging (1996)
    Springer
    Journal of materials science 15 (1996), S. 1108-1110 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00539951
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