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  • 1
    Electronic Resource
    Electronic Resource
    Phase formation and crystallization in Bi-Sr-Ca-Cu-O thick films (1990)
    Springer
    Applied physics 51 (1990), S. 65-67 
    Details
    ISSN: 1432-0630
    Keywords: 74.90
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Thick films of Bi2Sr2CaCu2Ox superconducting at 84 K have been prepared on polycrystalline MgO substrates. The effect of heat treatment on phases formed at various stages of the film preparation is studied. Investigations show that a thin layer at the top is highly oriented while the bulk of the 212 phase material beneath it consists of randomly oriented grains. This appears to be the main reason for the low critical current densities obtained in practice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324467
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    RuBP carboxylase activity in wheat following ear emergence and evaluation of the role of ear (1981)
    Springer
    Photosynthesis research 2 (1981), S. 145-152 
    Details
    ISSN: 1573-5079
    Keywords: awns ; chlorophyll ; flag leaf ; glumes ; RuBP carboxylase ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ribulose bisphosphate carboxylase activity and chlorophyll content were measured in the leaves and reproductive parts of two wheat cultivars after ear emergence. The chlorophyll content of the flag leaf was mostly higher than that of the awns and glumes. Awns had the highest chlorophyll content among reproductive parts. Light transmission to the lower leaves was higher in the dwarf cultivar Moti than in the medium tall cultivar Kalyansona. RuBP carboxylase activity in Kalyansona leaves was higher than in Moti leaves. In postanthesis stages there was no difference in RuBP carboxylase activity in the flag leaf and lower leaves between cultivars. Awns had the maximum activity of RuBP carboxylase followed by glumes and grains among ear parts. The relative capacity for photosynthesis in the ear parts was several times higher than in the flag leaf on a unit chlorophyll basis. It is suggested that in a crop canopy in the field, the spike(ear) may have a greater importance in grain development than has been previously estimated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00032353
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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