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  • 1
    ISSN: 1435-1536
    Keywords: Key words Allyldimethyldodecylammonium bromide ; Liquid crystals ; Polymerization ; Polymerizable surfactant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Allyldimethyldodecylammonium bromide was polymerized by γ-ray irradiation in both hexagonal and cubic mesophases, and the conversion–time curves were obtained. The maximum conversion was about 35%, and the polymer remained in the liquid-crystalline structure formed by the nonpolymerized monomers. The influence of polymerization on the distribution of water in the different types related to the hydrophilic surfaces of microstructures was studied using Fourier transform infrared spectroscopy. The incomplete polymerization was explained by steric constraints in the liquid-crystalline structures.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    BioControl 31 (1986), S. 377-383 
    ISSN: 1573-8248
    Keywords: Entomophthora muscae ; Musca domestica ; insecticide ; integrated control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Des études ont été menées afin de déterminer les effets de résidus d'insecticides sur la germination des conidies primaires d'Entomophthora muscae (Cohn) Fresenius et de déterminer la sensibilité sélective aux insecticides deMusca domestica L. infectée ou non. Des conidies primaires ont été prélevées de cadavres deM. domestica et déposées sur des lames de microscope traitées avec des insecticides. Tous les insecticides ont inhibé de manière significative la germination, comparativement au témoin. La perméthrine et le naled ont provoqué la plus faible inhibition (36–40 %), alors que le malathion et le diméthoate ont inhibé presque complètement la germination (87–94 %). Le tétrachlorvinphos/dichlorvos et le carbaryl ont provoqué un effet intermédiaire (57–59 %). Les mouches non infectées n'ont pas montré de différence de sensibilité au naled, au diméthoate et à la perméthrine, comparativement aux mouches infectées. Les mouches infectées et soumises à un traitement insecticide pendant le dernier jour d'incubation du pathogène sont mortes dans le fond des boîtes de Pétri, alors que les mouches infectées, mais non traitées grimpent préalablement le long des parois. Les deux groupes ont produit un grand nombre de conidies primaires.
    Notes: Abstract Studies were conducted to determine the effect of insecticide residues on germination of primary conidia ofentomophthora muscae (Cohn) Fresenius and to determine the relative susceptibility of healthy and infectedMusca domestica L. to insecticides. Primary conidia were discharged fromM. domestica cadavers onto glass microscope slides treated with insecticides. All insecticides significantly inhibited germination relative to control slides. Permethrin and naled had the least inhibition (36–40 %), while malathion and dimethoate almost completely inhibited germination (87–94 %). Tetrachlorvinphos/dichlorvos and carbaryl were intermediate (57–59 %). Healthy flies were not significantly different from infected flies in terms of susceptibility to naled, dimethoate, or permethrin. Infected flies exposed on the last day of pathogen incubation died on the bottom of the Petri dishes, rather than climbing and attaching as did untreated, infected flies. Both control and treated groups produced large numbers of primary conidia.
    Type of Medium: Electronic Resource
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