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  • 1
    Digitale Medien
    Digitale Medien
    Analysis of sugar cane saccharides by liquid chromatography. 2. Ion-exchange resins (1979)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 27 (1979), S. 929-932 
    Details
    ISSN: 1520-5118
    Quelle: ACS Legacy Archives
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/jf60225a002
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Analysis of sugar cane saccharides by liquid chromatography. I. Adsorption chromatography with flow programming (1979)
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 27 (1979), S. 927-929 
    Details
    ISSN: 1520-5118
    Quelle: ACS Legacy Archives
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/jf60225a001
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    LIY: learn-it-yourself software interfaces (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Computational intelligence 3 (1987), S. 0 
    Details
    ISSN: 1467-8640
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Informatik
    Notizen: An increasing number of people are becoming users of unfamiliar software. They can be genuinely “new” computer users or part of a growing group who are transferring skills and knowledge from a familiar product such as a word processor to a functionally similar, but different, unfamiliar one. The problem for users in this position is that they do not have access to training courses to teach them how to use such software and are usually forced to rely on text-based documentation. LIY is a method for producing computer-based tutorials to teach the user ofasoftware product.This paper describes how LIY is, in turn, (1) a method for application system design which recognizes the need for tutorial design (a task analysis and user interface specification provide information structures that are passed to the tutorial designer); (2) a support environment for the tutorial designer (in addition to prompting for courseware for nodes in the task analysis, LIY provides a ready-made rule base for constraining the degree of learner control available while the tutorial is in use. The designer is able to tailor this rule base for a specific tutorial); and (3) a tutorial delivery environment (the tutorial adapts to individual learners and offers a degree of learner control).
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1467-8640.1987.tb00171.x
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  • 4
    Digitale Medien
    Digitale Medien
    The role of pith, tube, and stalk density in determining sugarcane sucrose content and stalk weight (1990)
    Springer
    Theoretical and applied genetics 79 (1990), S. 273-277 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Saccharum spp. ; Genetic variance ; Heritability ; Path-coefficient analysis ; Genetic correlation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Selection against pith and tube is one of the major criteria used to eliminate inferior sugarcane (Saccharum spp.) cultivars in early stages of new cultivar evaluation. Understanding the genetic relationships for these traits would facilitate crossing and selection decisions. This study was conducted to determine heritability, genetic coefficient of variation, and the potential for genetic advance by selection for pith, tube, and stalk density. Correlation and path-coefficient analysis studies were conducted to determine the effects of Brix, pith, and stalk density on sucrose content and the effects of stalk volume, tube, and pith on stalk weight. Eighty randomly selected cultivars (four progeny from each of 20 crosses), representing a first clonal stage of a Louisiana sugarcane breeding population, and their parents were planted at St. Gabriel/LA, and yield data were collected in 1986, 1987, and 1988. Pith and tube exhibited large genotype and genotype-by-year variation, whereas variation in stalk density was nonsignificant. Broad-sense and narrow-sense heritabilities were high, moderately high, and low for pith, tube, and stalk density, respectively. Path-coefficient analysis revealed that stalk volume was the major factor determining stalk weight. Tube and pith were factors that decreased stalk weight. As expected, Brix was the single most important factor determining sucrose content, however, high stalk density and low pith were also associated with high sucrose content. Sugarcane breeders should practice stringent selection for low pith across years to increase stalk weight and sucrose content. Since stalk density was effectively increased by high sucrose content and low pith, the use of stalk density in breeding and selection should be avoided. The minimal effect of tube on stalk weight suggests that its use as selection criteria be minimized or dropped.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00225963
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  • 5
    Digitale Medien
    Digitale Medien
    Studies on the inheritance of flowering in sugarcane (1988)
    Springer
    Theoretical and applied genetics 75 (1988), S. 503-508 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Heritability ; Repeatability ; Cytoplasmic effects
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary Inheritance of first, maximum and average flowering date and percent flowering was investigated in sugarcane crosses involving early, mid, and late flowering parents in all possible combinations. Parental and f1 progeny data were taken on plant crops in 1983 and 1984 and a ratoon crop in 1985. Individuals in 1984 and 1985 were clones of the genotypes used in 1983. Heritabilities within years ranged between 0 and 0.3, indicating only moderate additive genetic variance. Approximately 30% to 50% of the observed variation could be attributed to genetic sources as measured by repeatability estimates. Contribution of female parents was more important than male parents, indicating an important role for cytoplasmic effects in flowering response. Heritabilities based on females were substantially larger than corresponding male estimates. Progeny flowered less frequently and later than parents, suggesting that early, frequent flowering depended on specific gene combinations which were lost during crossing.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00276757
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