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  • Beef cattle population  (1)
  • Column-switching  (1)
  • Springer  (2)
  • International Union of Crystallography
  • Mineralogical Society of Great Britain and Ireland
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Keywords
Publisher
  • Springer  (2)
  • International Union of Crystallography
  • Mineralogical Society of Great Britain and Ireland
Years
  • 1
    Electronic Resource
    Electronic Resource
    The effect of positive assortative mating on genetic parameters in a simulated beef cattle population (1986)
    Springer
    Theoretical and applied genetics 72 (1986), S. 76-79 
    Details
    ISSN: 1432-2242
    Keywords: Simulation ; Positive assortative mating ; Beef cattle population
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Two simulated data sets, representing random mating and positive assortative mating in a beef cattle population over 10 rounds of mating, were each composed of 100 replicates. Three correlated traits were considered; calving ease (CE), 200 day weight (WW) and postweaning gain (PG). All selection practiced in the simulation was random. Positive assortative mating, which was based on parental WW phenotypic records, increased the progeny additive genetic variance of WW. The absolute values of genetic covariances and correlations between WW with CE and PG were also increased by positive assortative mating. Variances or covariances did not reach their expected equilibrium values due to overlapping generations, low replacement rates and only 10 rounds of mating.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261458
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  • 2
    Electronic Resource
    Electronic Resource
    Automated analysis of terbutaline (BricanylR) in human plasma with liquid chromatography and electrochemical detection using column-switching (multidimensional chromatography) (1982)
    Springer
    Chromatographia 16 (1982), S. 341-344 
    Details
    ISSN: 1612-1112
    Keywords: Terbutaline ; Plasma ; Automated HPLC ; Column-switching ; Electrochemical detection
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary An automated method based on liquid chromatography has been developed for the determination of terbutaline in human plasma in the range of 5–50 pmole·ml−1. The necessary sensitivity and selectivity was obtained by using electrochemical detection and a microprocessor-controlled column switching system. A combination of three columns was used: a C8 type for pre-separation, a C18 type for trapping and, for final separation, a strongly acidic ion exchanger. The accuracy of the method was examined by comparison with a method based on gas chromatography — mass spectrometry. The overall precision was ±3.5% and ±2.2% respectively at 5 and 50 pmole·ml−1. The total absolute recovery for terbutaline and internal standard at the above concentration levels were in the range 85–106%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02258934
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    Paper (German National Licenses)
    Fulltext
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