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  • 1
    Electronic Resource
    Electronic Resource
    Simplified sampling in quantum Monte Carlo: Application to H+3 (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 2839-2843 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A new procedure for sampling molecular wave functions in quantum Monte Carlo calculations is used to determine energies for a number of configurations of the molecular ion H+3. With the Green's function fixed by use of a trial energy and with no drift terms required for importance sampling the procedure is both simple and efficient. For the equilibrium configuration of H+3 the energy is found to be −1.343 76±0.000 03 a.u. (i.e., ±0.02 kcal/mol).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452034
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  • 2
    Electronic Resource
    Electronic Resource
    Quantum chemistry by random walk: A faster algorithm (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2662-2663 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Two extensions of the fixed-node random walk method of solving the Schrödinger equation are described. A simple iterative procedure is found to reduce time-step error and the use of two trial wave functions in place of one for importance sampling is found to reduce computation effort. In combination the two modifications reduce computation effort for a fixed accuracy by a factor of about 10.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448262
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  • 3
    Electronic Resource
    Electronic Resource
    Quantum chemistry by random walk: Application to the potential energy surface for F+H2→HF+H (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 86 (1987), S. 7237-7239 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.452326
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  • 4
    Electronic Resource
    Electronic Resource
    Physical mapping of the mitochondrial genome of the cultivated mushroom Agaricus brunnescens (= A. bisporus) (1988)
    Springer
    Current genetics 14 (1988), S. 43-49 
    Details
    ISSN: 1432-0983
    Keywords: Agaricus ; MtDNA ; Restriction map ; Inverted repeat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Mitochondrial (mt) DNA from the commercial mushroom Agaricus brunnescens Peck [= A. bisporus (Lange) Imbach] was purified by cesium chloride/bisbenzimide gradient centrifugation. A physical map of the mtDNA fragments produced by BamHI, EcoRl, and PvuII digestion was generated by filter hybridizations with radiolabelled BamHI mtDNA probes. The A. brunnescens mtDNA was a circular molecule 136 kilo-basepairs (kbp) in length and contained an inverted repeat between 4.6 and 9.2 kbp in size. Orientational isomers of the mitochondrial genome were not detected. The positions of six genes were located on the A. brunnescens mtDNA map by heterologous hybridization. No coding function has yet been ascribed to the inverted repeat. The large rRNA gene was located on the smaller single copy region. The genes for cytochrome b, cytochrome oxidase (subunit III), ATPase (subunits 8 and 6) and the small rRNA were located on different regions of the larger single copy region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00405852
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  • 5
    Electronic Resource
    Electronic Resource
    The mitochondrial DNAs of Agaricus: heterogeneity in A. bitorquis and homogeneity in A. brunnescens (1985)
    Springer
    Current genetics 9 (1985), S. 127-132 
    Details
    ISSN: 1432-0983
    Keywords: Agaricus ; Mitochondrial DNA ; Restriction pattern polymorphism ; Restriction endonuclease analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Mitochondrial DNAs were isolated from four cultivated strains of the commercial two-spored mushroom Agaricus brunnescens (bisporus) and from ten isolates of the four spored mushroom Agaricus bitorquis. Digestion of the fungal mitochondrial DNA with restriction endonucleases yielded numerous fragments. Summation of the fragment sizes gave a mitochondrial DNA size of 98.3 ± 2.4 kilobases (kb) (64.9 x 106 daltons) for A. brunnescens. The size of the mitochondrial DNA ranged from 148.5 ± 10.8 kb (98.0 x 106 daltons) to 176.3 ± 12.0 kb (116.4 x 106 daltons) for A. bitorquis. The restriction patterns, produced by a variety of endonucleases, were identical for all four isolates of A. brunnescens. The ten isolates of A. bitorquis demonstrated extensive restriction pattern heterogeneity and have been tentatively assigned into four groups. Approximately 60% of the A. bitorquis mitochondrial DNA restriction fragments show sequence homology with A. brunnescens mitochondrial DNA based on DNA — DNA hybridizations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00436960
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