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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 94 (1997), S. 1015-1022 
    ISSN: 1432-2242
    Keywords: Key words Gain ; K-statistic ; Pinus taeda L. ; Selection index ; Stability ; Tree improvement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Genotype×environment interactions of individual traits have been assessed in numerous experiments with forest trees. However, since breeding programs rarely aim at the improvement of a single trait, the impact of G×E on index or composite traits must also be assessed. In a study with 12-year-old loblolly pine families in the southeastern U.S., G×E variance was of relatively little importance compared to genetic variance for wood density but was of greater significance for several growth traits. An index that combined stem volume and wood density to improve dry weight but maintain wood density constant (restricted selection index) resulted in substantially greater G×E variance compared to either of the component traits. The interaction variance of an index trait is shown to be a function of the index coefficients and the G×E variances and covariances for its constituent traits. As a result, for some conditions it surpasses the magnitude of G×E variance for each component trait.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pharmacy world & science 13 (1991), S. 137-141 
    ISSN: 1573-739X
    Keywords: Pharmacy services, community ; Drug compounding ; Drug utilization ; Sweden
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Small-scale preparations,i.e. non-registered drugs that are extemporaneously prepared for each patient or made in larger batches for stock keeping, form a small but important group of drugs, especially for patients with rare diseases or allergies. Small-scale preparations are not included in the otherwise comprehensive statistics compiled by the National Corporation of Swedish Pharmacies and this makes knowledge of the use of these drugs limited. The occurrence of small-scale preparations was studied at eleven community pharmacies over a three-year period (1987–1989) by analysis of the orders from the pharmacies to the four production units of the National Corporation of Swedish Pharmacies in the first quarter of each study year. The number of small-scale preparations dispensed were compared with the total sales of drugs at each pharmacy. The proportion of small-scale preparations in the total drug sales was about 1.5% throughout the study period, but there were fluctuations over time at the individual pharmacies. The most common dosage forms were creams, liniments and mixtures. Dermatological drugs in different dosage forms were the most frequent (almost 50%). This was probably because of the necessity for a great variety of different strengths among these drugs.
    Type of Medium: Electronic Resource
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