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  • LIFE SCIENCES (GENERAL)  (2)
  • Solanum tuberosum L.  (2)
  • 2-n-heptyl-4-hydroxyquinoline-N-oxide  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Inhibitory effects of myxothiazol and 2-n-heptyl-4-hydroxyquinoline-N-oxide on the auxiliary electron transport pathways of Rhodobacter capsulatus (1986)
    Springer
    Archives of microbiology 146 (1986), S. 159-165 
    Details
    ISSN: 1432-072X
    Keywords: Rhodobacter capsulatus ; Nitrate reduction ; Auxiliary electron transport ; Myxothiazol ; 2-n-heptyl-4-hydroxyquinoline-N-oxide ; Ubiquinone pool
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effects of various electron transport inhibitors upon the rates of reduction NO 3 - , dimethyl sulphoxide (DMSO) and N2O in anaerobic suspensions of Rhodobacter capsulatus have been studied. A new method for the determination of the rates of reduction of these auxiliary oxidants in intact cells is presented, based on the proportionality observed between the concentration of oxidant and the duration of the electrochromic carotenoid bandshift. For NO 3 - and N2O good agreement was found between rates of reduction determined using electrodes and those determined by the electrochromic method. Myxothiazol and antimycin A had no effect on the rates of reduction of NO 3 - and DMSO suggesting that the cytochrome b/c 1complex is not involved in electron transport to these oxidants. 2-n-heptyl-4-hydroxyquinoline-N-oxide (HOQNO) inhibited at two sites, one within the cytochrome b/c 1complex and the other on the nitrate reducing pathay, but had no effect on electron transport to N2O or DMSO. In both intact cells and cell free extracts, HOQNO had no effect on the nitrate dependent re-oxidation of reduced methylviologen (MVH2), a direct electron donor to nitrate reductase. Our data are consistent with a branch point for the auxiliary electron transport pathways at the level of the ubiquinone pool.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402344
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Potato tuber sugar content during development and storage (10°C): possible predictors of storage potential and the role of sucrose in storage hexose accumulation (1990)
    Springer
    Potato research 33 (1990), S. 241-245 
    Details
    ISSN: 1871-4528
    Keywords: reducing sugars ; processing quality ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Reducing sugar and sucrose contents of potato tubers (Solanum tuberosum L.) from six cultivars were monitored both during the growing season and after a four months storage period at 10°C. Significant correlations were found between tuber sugar contents (sucrose, reducing and total) measured at harvest and the reducing sugar content after storage. Similarly, in five of the six cultivars, the sucrose loss and the corresponding reducing sugar gain during storage were significantly correlated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358452
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    An investigation into the factors influencing sugar levels in UK grown potatoes (cv. Record) (1990)
    Springer
    Potato research 33 (1990), S. 235-239 
    Details
    ISSN: 1871-4528
    Keywords: processing quality ; glucose ; fructose ; sucrose ; storage ; Solanum tuberosum L.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Reducing sugar and sucrose content of potato tubers (cv. Record) grown in Tayside (northern United Kingdom (UK)) and Lincolnshire (southern UK) were monitored during the 1984 growing season and after two months storage at 10°C. Neither latitude nor agronomic factors were shown to affect sugar content. Significant correlations were found between the post storage reducing sugar content and the sugar contents measured at harvest. Regression analyses indicated that in immature tubers sucrose breakdown was responsible for reducing sugar accumulation during storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02358451
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  • 4
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    Microvascular pressure responses of second-generation rats chronically exposed to 2 g centrifugation (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Preliminary results are presented for a study aimed at a quantitative comparison of microvascular dynamics in second-generation rats reared in a 2-g force field produced by centrifugation with similar data from animals reared in a centrifuge that produced only a 1-g force. It is shown that the pressure distribution in the mesenteric microvasculature of the second generation of rats reared in a 2-g environment, as well as the animals' blood pressure response to epinephrine, are significantly different compared to their 1-g counterparts. In particular, 1-g and 2-g chronic centrifugation enhances the arterial blood pressure, and the 2-g force field attenuates the pressor effects of norepinephrine.
    Keywords: LIFE SCIENCES (GENERAL)
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Investigations of the inhibitory effects of tocopherol (vitamin E) on free radical deterioration of cellular membranes (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The inhibitory effects are investigated of d,1-alpha-tocopherol and d,1-alpha-tocopheryl acetate on the free radical deterioration of cellular membranes. The level of toxicity of d,1-alpha-tocopherol and d,1-alpha-tocopheryl acetate in mice is determined.
    Keywords: LIFE SCIENCES (GENERAL)
    Type: NASA-CR-146071
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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