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  • Electronic Resource  (24)
  • 1970-1974  (22)
  • 1910-1914  (2)
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  • Electronic Resource  (24)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 23 (1974), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: In 1972 a trial on susceptibility to carrot fly infestation was conducted on peat soil in East Anglia using 17 carrot cultivars sown on two dates one month apart. The only insecticide applied to the carrots was an aphicidal spray. The early-sown carrots were damaged by the first generation of larvae, but, by the second sampling date in October, there were no infestation differences between the two sowings. At harvest in December, significant differences in infestation levels occurred; these ranged from 82 per cent damaged roots for Amster-dammer Bak, 87 and 88 for two stocks of Royal Chantenay, to 97 per cent for Danvers 126. It is not yet clear whether the differences can be profitably exploited as an adjunct to other methods for controlling this pest.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 22 (1973), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: During the past few years the recommended treatment for the control of carrot fly larvae on parsnip roots has been phorate granules applied ‘bow-wave’ at drilling at 31b active ingredient/acre (3·36 kg/ha), followed by two foliar sprays of chlorfenvinphos each at 2 lb a.i./acre (2·24 kg/ha). This has been the standard recommendation for the control of carrot fly on carrots grown on peat soils. In a trial in 1972 this treatment gave useful control of a heavy carrot fly infestation on parsnips on a peat soil in eastern England. Protection lasted for approximately 30 weeks, after which the amount of damage increased sharply. Of the granular insecticides tested in the same trial as alternatives to phorate at drillng, chlorfenvinphos was reasonably eifective, but neither disulfoton nor diazinon gave adequate control.Two sprays of chlorfenvinphos applied later in the season to previously untreated parsnips were ineffective.Parsnips in untreated plots were heavily attacked by both first and second generation larvae; 37–40 per cent of the untreated plants were actually killed by the first generation larvae.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 22 (1973), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 22 (1973), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 231 (1971), S. 457-458 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The methods of estimating blood cell ion concentrations and water content have been described already2*3. Freshly drawn blood was centrifuged in standardized conditions and the sodium, potassium and water content of weighed samples of plasma and of the packed cell column were measured. ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neophilologus 56 (1972), S. 344-352 
    ISSN: 1572-8668
    Source: Springer Online Journal Archives 1860-2000
    Topics: Linguistics and Literary Studies
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 111 (1973), S. 2264-2272 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The impulse response for a horizontal magnetic dipole buried in a conducting half-space is obtained in closed form by an inverse Fourier transform of the known time harmonic solution. Since displacement currents are neglected, the response is not valid for very short times. The waveforms of the magnetic field components at the surface have geometrical dependences which may have application to source location.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Archiv der Mathematik 21 (1970), S. 369-373 
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Planta 103 (1972), S. 267-277 
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary When isolated in pure culture, four genera of lichen algae were able to produce the polyol which is known to move from the alga to the fungus in lichens with these algae. This conclusion corrects earlier suggestions that the mobile polyol is only formed by the alga in the lichen thallus. Stichococcus produced sorbitol and it is therefore suggested that, in lichens with this alga, sorbitol moves between the symbionts. Hyalococcus and Stichococcus had a similar pattern of incorporation of H14CO 3 - in the light, suggesting a close relationship between these algae which are only separated now on morphological grounds. The pattern of incorporation of H14CO 3 - in the light into Cladonia cristatella and its alga (Trebouxia erici) in culture indicates that in the cultured algae more 14C was incorporated into ethanol insoluble substances and lipids and less into ribitol than in the lichen. The pattern in a joint culture of the alga and the fungus of C. cristatella was approximately intermediate between that of the lichen and the alga. However, only a small amount of 14C fixed by the alga reached the fungus in the joint culture, and it is therefore suggested that the presence of the fungus without morphological differentiation into a lichen thallus is not sufficient to promote the alga to release carbohydrate.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Tropical animal health and production 3 (1971), S. 241-247 
    ISSN: 1573-7438
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L’infection expérimentale de chèvres naines de l’Afrique de l’Ouest par le virus de la peste des petits ruminants (PPR) et par le virus du Kata a montré que les deux maladies ne présentaient pas de différences cliniques ni pathologiques. Des chèvres convalescentes de Kata ont résisté à l’infection par le virus de la peste bovine. Une stimulation hétérologue de la réponse d’anticorps secondaires a été observée.
    Abstract: Sumario Las infecciones experimentales de cabras enanas de Africa Occidental con la peste de los pequeños ruminantes y con Kata fueron clinicamente y patoligicamente indistinguibles. Cabras que convalecieron de Kata resistieron a la infección con el virus de la peste bovina. Se observó una estimulación heteróloga de la respuesta inmunitaria secundaria.
    Notes: Summary Experimental infections of West African Dwarf goats with Peste des Petits Ruminants (PPR) and Kata were indistinguishable clinically and pathologically. Goats convalescent from Kata resisted infection with rinderpest virus. Heterologous stimulation of secondary antibody response was observed.
    Type of Medium: Electronic Resource
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