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  • Electronic Resource  (3)
  • 1990-1994  (3)
  • 1992  (3)
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  • Electronic Resource  (3)
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  • 1990-1994  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Genetic diversity and differentiation of indica and japonica rice detected by RFLP analysis (1992)
    Springer
    Theoretical and applied genetics 83 (1992), S. 495-499 
    Details
    ISSN: 1432-2242
    Keywords: Oryza sativa ; Phenotypic diversity ; Differentiation ; Randomization test ; RFLP
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Genetic diversity and differentiation in indica and japonica groups of the cultivated rice (Oryza sativa L.) were studied by assaying DNA restriction fragment length polymorphisms of 12 indica and 14 japonica rice lines digested with three restriction endonucleases. A total of 49 probes were selected to represent the entire RFLP map at intervals of 20–30 cM. It was shown that 95 of the 145 possible probe/enzyme combinations, involving 43 probes and all three enzymes, detected restriction fragment length variation, and the degree of polymorphism varied greatly from one probe/enzyme combination to another. These results demonstrate that indica rice is genetically more diverse than japonica type. Significant differentiation between the two rice groups was detected by 33 probes representing 11 of the 12 rice chromosomes. It was deduced that the processes leading to differentiation involved a combination of molecular events that include base substitutions and insertion/deletions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00226539
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic properties and phase compositions of rapidly quenched Nd4Fe96−x B x after crystallization (1992)
    Springer
    Hyperfine interactions 72 (1992), S. 111-121 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Permanent magnets, composition Nd4Fe96−x B x (x=10–21), were made by rapid quenching followed by crystallization. The effects of B concentration and annealing time on the magnetic properties and phase compositions were studied by Mössbauer spectroscopy and magnetic measurements. The stripping method was adopted to obtain the subspectral area of each Fe phase. Optimum magnetic properties are obtained for the composition Nd4Fe77B19 annealed at 670°C for 3 minutes. Then the remanence is 12.0 kGs, the intrinsic coercivity 3.2 kOe, and the maximum energy product 12.6 MGOe. The crystalline phases are Fe3B, Nd2Fe14B and α-Fe with volume percentages of 60%, 36%, and 4%, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02398860
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Mössbauer study of amorphous Nd x Fe81B19-x (0≦x≦19) alloys (1992)
    Springer
    Hyperfine interactions 68 (1992), S. 377-380 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Amorphous NdxFe81B19-x (0≤x≤19) alloys have been studied by57Fe Mössbauer spectroscopy. It is found that the average and peak hyperfine fields and the isomer shift decrease with increasing Nd content x. The magnetization for the samples containing Nd shows a strong tendency to lie in the direction perpendicular to the ribbon plane and its direction varies with Nd content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02396514
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    Paper (German National Licenses)
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