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  • 1990-1994  (4)
  • 1975-1979
  • 1970-1974
  • 1993  (4)
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  • 1990-1994  (4)
  • 1975-1979
  • 1970-1974
Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Clinical & experimental allergy 23 (1993), S. 0 
    ISSN: 1365-2222
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Adult fleas, spent and unspent culture media were extracted and the radio-atlergosor-bent test (RAST) performed with sera of 48 cat flea skin test-positive individuals from the Tampa Bay area of Florida. Sixteen sera (33.6%) had a positive RAST to the cat flea extract prepared in our laboratory [1.7-11.4% of the total counts (TC) added]. Six of the 16 sera (12.5%) also contained specific IgE to allergens in thespent medium (0.8-3.3% TC). The allergen composition and strength were studied by RAST inhibition of two commercial cat flea extracts and compared with our in-house flea extract. The results demonstrated similar allergen compositions and different potencies. Sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) of the in-house flea extract showed several Coomassie blue-stained bands (10–85 kD). SDS-PAGE immunoblols revealed five IgE-binding bands at 34, 35, 39, 54 and 60 kD. Flea allergens were quantified in eight house dust samples using RAST inhibition assays and expressed as RAST inhibition units; five of these samples contained detectable levels. Cat flea allergens may contribute to the allergenicity of house dust in areas of heavy llea infestation.
    Type of Medium: Electronic Resource
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  • 2
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    Unknown
    The Hague : Periodicals Archive Online (PAO)
    The Journal of Value Inquiry. 27:1 (1993) 81 
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Tropical animal health and production 25 (1993), S. 203-214 
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Une grande exploitation pour bovins a été fondée en 1954 dans une region du nord-est de la Tanzanie, hautement infestée par les glossines. Pendant 30 ans la trypanosomose a été controllée a l'aide de drogues prophylactiques mais en 1988 la resistance à ces drogues semble s'être developper car des cas de typanosomose ont été confirmés quatre au cinq semaines après traitement au chloride d'isometamidium (Samorin). L'état sanitaire du troupeau s'est deterioré et la productivité n'etait plus economiquement rentable. Afin de controler la population de glossines, les huit milles de bovins pâturant sur plus de 250 km2, ont été régulièrement immergés dans des bains de deltamethrine, pyrethroide de synthèse (Decatix cattle dip et spray formulation). En un an, la population de glossines, evaluée par piégeage a diminuée de plus de 90%. La mortalité due à la maladie a dimunuée de plus de 66% et plusieurs paramètres de productivité, tel que le pourcentage de mise bas et le gain de poids ont atteint des niveaux superieurs a ceux enregistrés avant la degradation de l'état sanitaire du troupeau.
    Abstract: Resumen Un hato grande de ganado fue establecido en 1954 en un area densamente infestada del noreste de Tanzania. Tripanosomiasis fue controlada por 30 anõs usando drogas profilacticas, pero en 1988 resistencia al fármaco pareció desarrollarse ya que casos de tripanosomiasis fueron confirmados 4 o 5 semanas después del tratamiento con isometamidium chloride (Samorin). La salud del hato se habia deteriorado y la productividad era economicamente baja. Para controlar la población de tse tse, las ocho mil cabezas de ganado pastoreando sobre 250 km2 fueron regularmente bañados con el pyrethroid deltamethrin sintético (Decatix para inmersion de bovinos y formulacion para aspersion). Dentro de un anõ la población de tse tse, monitoreada a través de trampas, habia disminuído mas del 90%. La mortalidad decrecio cerca de 66% y un rango de medidas de productividad tales como porcentajes de paricion y pesos al destete fueron incrementatdos a niveles arriba de aquellos que prevalecieron antes de la disminucion en la salud del hato.
    Notes: Summary A large cattle ranch was established in 1954 in a heavily tsetse infested part of north-east Tanzania. Trypanosomosis was controlled for 30 years by prophylactic drugs but in 1988 drug resistance seemed to be developing as cases of trypanosomosis were being confirmed 4 or 5 weeks after treatment with isometamidium chloride (Samorin). Herd health had deteriorated and productivity was uneconomically low. In order to control the tsetse population the 8,000 cattle, grazing over 250 km2, were regularly dipped in the synthetic pyrethroid deltamethrin (Decatix Cattle Dip and Spray formulation). Within a year the tsetse population, as monitored by traps, had decreased by more than 90%. Disease mortality decreased by 66% and a range of productivity measures such as calving percentages and weaning weights were raised to levels above those prevailing before the decline in herd health.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Plant and soil 151 (1993), S. 219-226 
    ISSN: 1573-5036
    Keywords: Glomus aggregatum ; indigenous ; Leucaena leucocephala ; propagules ; tropical soils ; VAMF inoculation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Five tropical soils were either not inoculated or inoculated with the vesicular-arbuscular mycorrhizal (VAM) fungus Glomus aggregatum. The degree to which VAM effectiveness was expressed in the soils was evaluated prior and after solution P status was adjusted for optimal VAM activity. VAM effectiveness determined by monitoring P concentrations of pinnules of Leucaena leucocephala leaves as a function of time and as dry matter yield determined at the time of harvest, indicated that in three of the soils VAM effectiveness was either very restricted or altogether unexpressed irrespective of vesicular-arbuscular mycorrhizal fungal (VAMF) inoculation if soil solution P was not optimized for VAM effectiveness. After P optimization, effectiveness was significantly increased by VAMF inoculation although in four of the soils, densities of indigenous VAMF propagules greatly exceeded that attained by the inoculum after it was mixed with soil. Mycorrhizal fungal inoculation effects varied from soil to soil, depending on the extent to which the effectiveness of indigenous and introduced endophytes was enhanced by P optimization and the similarity of inherent soil solution P concentrations to the range known to be optimum for VAM effectiveness. Of the indicator variables monitored, VAMF colonization was least sensitive to treatment effects followed by shoot P concentration measured at the time of harvest.
    Type of Medium: Electronic Resource
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