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  • Electronic Resource  (2)
  • Inulin Measurement  (1)
  • cycle life  (1)
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  • Electronic Resource  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of applied electrochemistry 28 (1998), S. 895-898 
    ISSN: 1572-8838
    Keywords: zinc–air battery ; pasted zinc electrode ; cellulose ; cycle life
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract For the development of a long-lived, electrically rechargeable zinc–air battery the structure and wettability of pasted zinc electrodes were optimized. Pasted zinc electrodes containing 1 to 10% cellulose but having almost the same nominal capacities were prepared and tested in zinc/oxygen cells. The effect of discharge rate on cell voltage and delivered capacity, as well as the maximum power, were measured. Furthermore, cell charge–discharge behaviour and cycle life were examined. After different times of operation, the porosity and the pore size distribution of the pasted zinc electrodes were measured by means of mercury porosimetry. The cycle life and peak power drain capability of the Zn/oxygen battery could be substantially improved by the addition of 10wt% cellulose to the pasted zinc electrode.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Pflügers Archiv 343 (1973), S. 179-183 
    ISSN: 1432-2013
    Keywords: Inulin Measurement ; Ultra-Micro Method ; Sphere Attachment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A simple method using glass capillaries instead of microcuvettes for measurement of inulin in nanoliter samples is given. Inulin was determined with anthron reagent (5 or 10 nl samples +3 μl anthron reagent). Glass capillary tubes (o.d.=1 mm, i.d.=0.68 mm, length=150 mm) in which the chemical reaction took place during incubation at 56°C were directly introduced into the optical system of a Zeiss spectrophotometer PMQ II with sphere attachment and objective. Extinction was measured vertically to the axis of the capillary. The changes of extinction of 20 different capillaries with the blank at different positions was only 1.13×10−3. The exactness of measurement in the concentration range of 100 ≤ 200 ≥ 400 ≥ 750 ≥ 1500 ≥ 3000 mg-% inulin was for 5nl/3 μl: 19.8 ≥ 11.0 ≥ 6.7 ≥ 4.7 ≥ 3.0 2.2%. 10nl/3 μl: 13.0 ≥ 8.4 ≥ 5.1 ≥ 3.9%. This method of measurement may also be applicable for other colorimetric reactions with nanoliter samples.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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