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  • 1
    Electronic Resource
    Electronic Resource
    Sorption of Volatile Compounds in Aqueous Solution by Ethylene-Vinyl Alcohol Copolymer Films (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 56 (1991), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Sorption of volatile compounds by ethylene-vinyl alcohol copolymer (EVOH) films from an aqueous solution was investigated to evaluate the merit of their use for food packaging. With regard to EVOH, equilibrium swelling values gave rise to a bimodal solubility parameter distribution with maxima at δ values of 8.5 assigned to ethylene units and 14.5 to vinyl alcohol units. Comparing distribution ratios of EVOH with those of middle-density polyethylene (MDPE), the ratios were 1:100 for terpene hydrocarbons, 1:10 for esters, 1:2 for alcohols, and almost 1:1 for aldehydes. By biaxial orientation of EVOH film, the sorption could be depressed below 60%. These results suggested EVOH films are more appropriate than MDPE for food container lining.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1991.tb05313.x
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  • 2
    Electronic Resource
    Electronic Resource
    Skipped diynes. V. Secondary diethynyl carbinols. Base-catalyzed ynol to enol rearrangements and ultraviolet spectra and conjugation (1974)
    s.l. : American Chemical Society
    The @journal of organic chemistry 39 (1974), S. 739-747 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00920a001
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and nucleophilic properties of 4-aryl-5-triphenylphosphonium-1,2,3-triazole ylides or 4-aryl-1,2,3-triazol-5-yltriphenylphosphoranes (1973)
    s.l. : American Chemical Society
    The @journal of organic chemistry 38 (1973), S. 2708-2712 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00955a029
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  • 4
    Electronic Resource
    Electronic Resource
    2H-1,2,3-Triazoles from the ethyl nitrocinnamates (1972)
    s.l. : American Chemical Society
    The @journal of organic chemistry 37 (1972), S. 3370-3372 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00986a048
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  • 5
    Electronic Resource
    Electronic Resource
    Individual variation of scent avoiding oviposition behavior in azuki bean weevilCallosobruchus chinensis (1991)
    Springer
    Journal of ethology 9 (1991), S. 31-33 
    Details
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02350294
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  • 6
    Electronic Resource
    Electronic Resource
    Realized heritability of behavioral responsiveness to an oviposition deterring pheromone in the azuki bean weevil Callosobruchus chinensis (2000)
    Springer
    Entomologia experimentalis et applicata 96 (2000), S. 239-243 
    Details
    ISSN: 1570-7458
    Keywords: heritability ; oviposition deterring pheromone ; egg-spacing behavior ; quantitative genetics ; Callosobruchus chinensis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Artificial selection was conducted to reduce the behavioral responsiveness of female bruchid beetles, Callosobruchus chinensis, to the oviposition deterring pheromone excreted by conspecific females. Significant responses to selection were observed after two generations of selection. Realized heritability was estimated as 0.052 ± 0.017 from cumulative responses regressed on cumulative selection differentials. These results indicate that this pheromone communication system has significant additive genetic variance needed for its evolution.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004059726050
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  • 7
    Electronic Resource
    Electronic Resource
    A pleiotropic model of phenotypic evolution (1998)
    Springer
    Genetica 102-103 (1998), S. 535-543 
    Details
    ISSN: 1573-6857
    Keywords: mutation ; pleiotropy ; genetic variance ; genetic load ; selection limit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A pleiotropic model is presented for deriving the equilibrium genetic variance by mutation and stabilizing selection and the long-term genetic responses to directional selection in the case where mutations have pleiotropic effects on fitnes itself (direct deleterious effect) and on a quantitative trait (phenotypic effect). The equilibrium genetic variance is derived as a general form of the rare-alleles models, i.e., $$\tilde V_G = \frac{{2n\mu \alpha ^2 }}{{s_u + \alpha ^2 /(2V_s )}}$$ , where n is the number of loci, μ is the per-locus mutation rate, $$\alpha ^2 $$ is the variance of new mutations, Vs is the measure of stabilizing selection, and su is the selection coefficient on mutations by direct deleterious effect. The genetic responses to directional selection is calculated based on the assumption that the genetic variance is kept at an equilibrium by mutation and stabilizing selection but without directional selection, and the directional selection starts to operate on the target trait. The evolutionary rate at the t-th generation after the introduction of the directional selection is $$\Delta \bar z(t) = i\tilde V_G e^{ - s_T t} $$ , where i is the directional selection intensity, and sT is the total selection coefficient on mutations, i.e., $$s_u + \alpha ^2 /(2V_s )$$ . The selection limit is $$R = iV_m /s_T^2 $$ , where Vm is the mutational variance $$(2n\mu \alpha ^2 )$$ . The pleiotropic effects of genes reduce both the evolutionary rate and the selection limit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1017028118368
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  • 8
    Electronic Resource
    Electronic Resource
    Heritability estimates of phenthoate resistance in the diamond-back moth (1989)
    Springer
    Entomologia experimentalis et applicata 52 (1989), S. 39-47 
    Details
    ISSN: 1570-7458
    Keywords: heritability ; artificial selection ; quantitative genetics ; insecticide resistance ; phenthoate ; the diamond-back moth ; Plutella xylostella
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé L'héritabilité de la résistance au phenthoate obtenue chez deux souches locales de P. xylostella L. (Lep.; Yponomeutidae) a été calculée en procédant au laboratoire à des sélections artificielles pour la résistance et pour la sensibilité à cet insecticide. Les calculs de l'héritabilité ont montré que de tels caractères sont moyennement héritables (ĥ 2=0,42 et 0,41 lors de la sélection pour la résistance, et ĥ 2=0,31 et 0,21 lors de la sélection pour la sensibilité), et ont fourni la base expérimentale rendant compte des changements évolutifs rapides observés pour la résistance au phenthoate chez des populations naturelles de cet insecte. Les changements observés de la variance de la sensibilité au phenthoate sont discutés en fonction de la variance génétique additive éliminée par la sélection orientée. L'explication insiste sur l'importance du système génétique souligné.
    Notes: Abstract Realized heritabilities were estimated for the character of phenthoate resistance in two local strains of the diamond-back moth, Plutella xylostella L. (Lepidoptera: Yponomeutidae), by performing artificial laboratory selection for resistance and susceptibility to phenthoate. Heritability estimates indicated that such traits are moderately heritable (ĥ 2=0.42 and 0.41 in the resistant selection and ĥ 2=0.31 and 0.21 in the susceptible selection), and give an experimental basis accounting for rapid evolutionary changes of phenthoate resistance observed in field populations of this insect. The observed changes in variances of phenthoate susceptibility are discussed in relation to the additive genetic variance eliminated by directional selection. The explanation stresses the importance on the underlying genetic system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00163940
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