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  • 1985-1989  (2)
  • 1970-1974
  • CO2 uptake from roots  (1)
  • Medroxy-progesterone acetate  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Uptake of organic matter by the roots of sweet potato: Analysis of the δ14C value of plants (1986)
    Springer
    Plant and soil 91 (1986), S. 209-219 
    Details
    ISSN: 1573-5036
    Keywords: Carbon dating ; CO2 uptake from roots ; Delta carbon-14 ; Delta carbon-13 ; Ipomoea batatas ; Organic matter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary To determine whether sweet potato (Ipomoea batatas (L.) Poir.) takes up organic matter through the roots from the medium, the concentrations of natural14C (δ14C) in plant organic matter, atmospheric CO2 and compost applied to media were examined under soil and sand culture conditions. In these experiments, three kinds of composts of different δ14C were used. CO2 derived from the mineralization of compost was continuously pumped out from the pots and its direct uptake by the leaves was prevented. δ14C of plant parts harvested after the 43 days experimental period were affected by the δ14C of the compost in the treatments where the compost of rice straw was applied, and which suggested that a significant amount of plant carbon was derived from the compost.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02181788
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Study of the effect of an anti-androgen (Oxendolone) on experimentally induced canine prostatic hyperplasia (1988)
    Springer
    Urological research 16 (1988), S. 67-72 
    Details
    ISSN: 1434-0879
    Keywords: Canine BPH ; Prostate size ; Histology ; Antiandrogen ; Anti-estrogen ; Oxendolone ; Medroxy-progesterone acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary To investigate the effect of anti-androgens on BPH, Oxendolone (OXD), a pure anti-androgen, was tested in experimentally induced BPH in 17 beagle dogs, alone or in combination with medroxyprogesterone acetate (MPA) which displays both anti-androgenic and anti-estrogenic activity. The relatively early stage of canine BPH was induced by administration of 3α-androstanediol (3α-A) plus estradiol (E2) for 6 months and followed by testosterone propionate (TP) plus E2 for another 6 months during the anti-androgenic treatment. By the manipulation with T, a decrease in volume of glandular component associated with a relative increase in stromal tissue was achieved, which mimics human BPH histology. The prostate substituted with T and E2, however, gradually decreased in size. Therefore the effect of OXD or OXD+MPA was not significant agianst the untreated controls (T-E control). The weight of the prostate in these OXD±MPA groups was however significantly reduced as compared to that of BPH controls which received 3α-A and E2 throughout the experimental period. On histological examination, atrophic changes were observed in the hormone-treated groups compared to the T-E control. The finding was the most striking in the OXD+MPA group with small non-involuted acini scattered in the abundant stromal tissue. This was almost identical to the appearances of castrated control groups. Atrophy may be due not only to the anti-androgenic but also to the anti-estrogenic property of MPA. A report on the hormonal background of this experiment will appear in the second article.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00261958
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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