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  • 1
    Electronic Resource
    Electronic Resource
    A statistical theory of amino acid mutation (1990)
    Springer
    Origins of life and evolution of the biospheres 20 (1990), S. 419-424 
    Details
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Assuming that the observed mutation frequency of an amino acid depends on two factors. The first is mutation coefficient which describes the rate of the nucleotide substitution stochastically and the second is the similarity of amino acids which represents the fitness of a mutant under the selective pressure. A statistical theory is proposed and 380 mutation frequencies are calculated, only 10 of which disagree obviously with the observed data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808136
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Synthesis of a novel macrocyclic dinuclear iron(III) complex and its electrochemical behaviour on an ultramicrodisc platinum electrode (1997)
    Springer
    Transition metal chemistry 22 (1997), S. 347-349 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract A new macrocyclic dinuclear iron(III) complex, prepared by condensing 2,6-diformylpyridine N-oxide with 1,3-diaminopropane in the presence of FeCl2·4H2O, and formulated as Fe2LCl6C2H5OH·6H2O, was characterized by its elemental analyses, by i.r., Mo¨ssbauer and e.p.r. spectra, and was investigated electrochemically. The results show that two iron ions are situated in the same chemical environment in the compound and that the electrode reaction can be considered as a double electron-transfer process. The diffusion coefficient is 2.16×10−6 cm2 s−1 and E°′ −0.169 V (versus s.c.e.) and α = 0.37. The average electron transfer rate constant ko′ is 2.8×10−3 cm s−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1018405717199
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Massively parallel finite element analysis of coupled, incompressible flows: A benchmark computation of baroclinic annulus waves (1995)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 21 (1995), S. 1007-1014 
    Details
    ISSN: 0271-2091
    Keywords: finite element ; massively parallel ; coupled flow ; baroclinic annulus waves ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Coupled, three-dimensional, time-dependent, incompressible flows in a differentially heated, rotating annulus are simulated using a parallel implementation of the Galerkin finite element method on the Connection Machine 5 (CM-5) supercomputer. The development of baroclinic annulus waves is computed and found to be consistent with previous experimental reseults. The implementation of a repeated spectral bisection element-partitioning technique significantly increases the computation speed over a strategy which randomly maps elements to processors, yielding sustained calculation rates of 8.1 GFLOPS on 512 processors of the CM-5.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/fld.1650211017
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    Paper (German National Licenses)
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