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  • After-cooking blackening  (1)
  • Cell volume  (1)
  • Fractionated therapyIntroduction  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    The invariance of macromolecular composition with altered light limited growth rate of Amphidinium carteri (dinophyceae) (1985)
    Springer
    Archives of microbiology 142 (1985), S. 81-86 
    Details
    ISSN: 1432-072X
    Keywords: Carbon-fixation ; Cell volume ; Dinophyceae ; Growth rate ; Irradiance ; Macromolecular composition ; Nucleic acid composition ; Amphidinium carteri
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of irradiance on the growth rate, macromolecular composition and photosynthetic carbon metabolism of Amphidinium carteri was studied in batch culture. Growth rate increased linearly with increasing irradiance up to a maximum growth rate of 0.04 h-1 at an irradiance of 80 μEm-2s-1. In contrast to a number of other studies on both prokaryotic and eukaryotic microorganisms, ours showed that cellular content of RNA, DNA, protein and carbohydrate of A. carteri were invariant with growth rate over the range μ=0.04 to 0.007 h-1. The invariant macromolecular composition was correlated with a constant modal cell volume. Chlorophyll and lipid per cell increased with decreasing irradiance. The distribution of [14C]-bicarbonate in the major end products of photosynthesis after incubation with isotope for 14% of a doubling time showed that the percentage carbon in the chloroform (lipids and pigments) fraction increased with decreasing irradiance while that of the trichloroacetic acid soluble (carbohydrate) fractions decreased. The percentage of isotope in the trichloroacetic acid insoluble (protein) fraction and methanol: water fraction (metabolites) remained constant. Because this species, under light-limited growth, differs from other organisms so far studied, more species must be similarly examined before nucleic acid content is used as an index growth rate in the field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00409242
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Prevention of after-cooking darkening of irradiated potatoes (1977)
    Springer
    Potato research 20 (1977), S. 77-84 
    Details
    ISSN: 1871-4528
    Keywords: After-cooking blackening ; after-cooking darkening ; gamma rays ; sprout inhibition ; phenolics ; carotenoids ; irradiation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Potatoes of the variety ‘Kufri Chandramukhi’ exposed to 10 krad of gamma rays for sprout inhibition, tended to develop after-cooking darkening, after storage at 15°C, for over three months. The darkening could be prevented or reduced (a) by pre-peeling of tubers prior to cooking: or (b) by reconditioning the potatoes by keeping them at 34–35°C for 4–6 days; or (c) by soaking and cooking the tubers in solutions of diaminoethane-tetra-acetic acid disodium salt (EDTA) or citric acid. Prepeeled tubers cooked in the presence of the peel tissues or added phenolics like caffeic and chlorogenic acids showed darkening. The results implicate that this could be due to the interaction of phenolics with Fe++ present in the tissues. The storage of irradiated tubers at low temperature also showed enhanced disapperance of carotenoids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02362302
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Outpatient management of patients with large multinodular goitres treated with fractionated radioiodine (1997)
    Springer
    European journal of nuclear medicine 24 (1997), S. 1465-1469 
    Details
    ISSN: 1619-7089
    Keywords: Key words: Multinodular goitre ; Radioiodine ; Hyperthyroidism ; Fractionated therapyIntroduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The efficacy of fractionated out-patient radioiodine therapy in 38 patients with compressive symptoms due to long-standing large multinodular goitres was assessed. The diagnosis was established by clinical assessment in addition to technetium-99m pertechnetate thyroid scan or computed tomography scan of the thyroid and mediastinum. Oral iodine-131 therapy was administered as a 2.22 GBq (60 mCi) cumulative dose over 4 months (555 MBq per month). All patients were monitored with serum thyroid-stimulating hormone and free thyroxine (± free tri-iodothyronine) assays before the treatment and after each dose fraction. Clinical and biochemical follow-up was performed on all patients and ranged from 6 to 45 months after therapy. The patients consisted of 35 female and three male patients with a median age of 59 years (range 37–87 years). Prior to treatment 20 patients were biochemically hyperthyroid and 18 were euthyroid. Overall, 71% of patients reported a subjective improvement in compressive symptoms and 29% reported no change. Clinically assessed reduction in goitre size occurred in 92% of patients while there was no change in 8%. At 3 months of follow-up, 31% of patients had become hypothyroid and at 18 months 66% were hypothyroid. Seven hyperthyroid patients (35%) became euthyroid and 13 hyperthyroid patients (65%) became hypothyroid. Three patients who became hypothyroid experienced neck soreness (transient in one patient, persistent in two patients). There were no differences in outcome between patients who were hyperthyroid and those who were euthyroid prior to treatment. Fractionated out-patient radioiodine therapy showed excellent short- and medium-term safety, was very well tolerated and offered a satisfactory alternative treatment to surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002590050175
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    Paper (German National Licenses)
    Fulltext
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