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  • 1
    Electronic Resource
    Electronic Resource
    C1-inhibitor gene nucleotide insertion causes type II hereditary angio-oedema (1993)
    Springer
    Human genetics 〈Berlin〉 92 (1993), S. 189-190 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The polymerase chain reaction and nucleotide sequence analysis have been used to characterise a three nucleotide insertion in the eighth exon of one allele of the C1-inhibitor gene between nucleotides 16749 and 16750 in a kindred with type II hereditary angio-oedema (HAE). The effect of the resulting C1-inhibitor amino acid sequence alteration is discussed. This represents the first report of a nucleotide insertion in the C1-inhibitor gene causing type II HAE.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00219690
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  • 2
    Electronic Resource
    Electronic Resource
    Regional chromosomal assignment of genes encoding the α and β subunits of human complement protein C8 to 1p32 (1992)
    Springer
    Human genetics 〈Berlin〉 88 (1992), S. 703-704 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The genes encoding the α and β subunits of human complement protein C8 previously mapped to chromosome 1 have been further localised to 1p32 by in situ hybridisation using biotinylated 2.4-kb human cDNA clones encoding the α and β subunits of human complement protein C8 as probes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02265304
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  • 3
    Electronic Resource
    Electronic Resource
    Quantitation of human C4A and C4B, in serum and plasma by enzyme-linked immunoadsorbent assay (1988)
    Springer
    Immunogenetics 27 (1988), S. 295-297 
    Details
    ISSN: 1432-1211
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00376126
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  • 4
    Electronic Resource
    Electronic Resource
    An RNA splice site mutation in the C1-inhibitor gene causes type I hereditary angio-oedema (1991)
    Springer
    Human genetics 〈Berlin〉 88 (1991), S. 231-232 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Restriction fragment length polymorphism analysis, the polymerase chain reaction and nucleotide sequencing have been used to characterise a single base substitution (G→T) at nucleotide 8863 in the C1-inhibitor gene. This destroys the 5′ donor splice site recognition motif of the sixth intron. Family studies suggest that the mutation is responsible for type I hereditary angio-oedema in a studied kindred.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206079
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  • 5
    Electronic Resource
    Electronic Resource
    Wave functions of helium clusters (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 6738-6751 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The ground and several l=0 breathing mode vibrational excited state wave functions of HeN clusters are determined for N=3–5, 20, 70, and 240, using the variational Monte Carlo method. These wave functions incorporate one-, two-, and three-particle correlation effects and give binding energies, density profiles, and vibrational excitation energies accurately. The larger clusters have liquid-like structure, characterized by a pair distribution function showing approximately two coordination shells. The smallest clusters (N=3, 4) have extensively delocalized structures, which on average are equilateral triangular and tetrahedral, respectively. The N=5 cluster has a totally symmetric average structure, which can only be described in terms of a quantum liquid. No molecular structure, whether rigid or floppy can be assigned in this case. The relative importance of various correlation effects in clusters of different sizes is analyzed and discussed. These wave functions are completely analytical and are convenient as importance functions in diffusion and Green's function Monte Carlo calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.458943
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  • 6
    Electronic Resource
    Electronic Resource
    Delocalization and correlation effects in atomic systems: Solution of the Hubbard model for general spin (1987)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 87 (1987), S. 7160-7170 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The effects of quantum statistics and atomic correlations on motion in two-dimensional periodic potentials is studied within a Hubbard model for both Bose–Einstein and Fermi–Dirac statistics. Exact eigenstates are obtained for finite clusters with periodic boundary conditions, and the extent of ground state delocalization evaluated for both statistics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.453359
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  • 7
    Electronic Resource
    Electronic Resource
    Microscopic studies of collective spectra of quantum liquid clusters (1990)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 93 (1990), S. 746-759 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Theoretical methods are developed for determining the collective vibrational excitation spectra of quantum clusters, and applied to clusters of 4He. A quantum liquid drop model gives excitation energies in terms of two-point ground state density correlations, which are evaluated from microscopic calculations of the ground state wave functions. An alternative approach based on a Bijl–Feynman ansatz for the excited states also yields excitation energies in terms of ground state correlations, without the imposition of a sharp liquid surface. These methods are applied to the calculation of the excitation spectra of 4HeN , N=20, 70, and 240 clusters. The relationship between the collective spectra of these clusters and that of bulk fluid He II, and the significance of an observed roton minimum in the spectrum for N≥70 are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.459525
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  • 8
    Electronic Resource
    Electronic Resource
    Mean-field theories for multidimensional diffusion (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 90 (1989), S. 2758-2767 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Self-consistent-field (SCF) methods are developed for solution of multidimensional diffusion problems. Time-dependent self-consistent-field (TDSCF) equations are derived for the Smoluchowski diffusion equation, and are applied to a two-dimensional barrier crossing problem. This is compared to both time-dependent and time-independent SCF approximations derived for the Schrödinger equation in imaginary time, which is obtained by transformation of the diffusion equation. Results for the model problem show that the TDSCF approximation for the original diffusion equation is accurate, efficient, and readily implementable in higher dimensions. Applications to diffusion problems in condensed media are noted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455923
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  • 9
    Electronic Resource
    Electronic Resource
    Potential energy determination by inverse perturbation analysis with local correction functions (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 5151-5157 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Inverse first order perturbation analysis is used iteratively to correct a potential energy surface. With local Gaussian correction functions the analysis is shown to be accurate, flexible, and rapidly convergent for both one and two dimensional examples. The analysis is employed to obtain an improved two dimensional potential energy surface for the twist–pucker motion in cyclopentene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451708
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  • 10
    Electronic Resource
    Electronic Resource
    Quantum structure and rotational dynamics of HCN in helium clusters (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 115 (2001), S. 10186-10198 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We present diffusion Monte Carlo calculations of ground states and rotationally excited states of HCN 4Hen, using our recently developed algorithm for importance sampled rigid body diffusion Monte Carlo [Viel et al., Comput. Phys. Commun. (in press, 2001)] within the mixed frame implementation. Excited states are studied with both fixed node approximations, and the Projection Operator Imaginary Time Spectral Evolution (POITSE) method that allows nodal constraints to be circumvented. Improvements in the POITSE algorithm allow excited states of clusters with up to 80 degrees of freedom to be determined here. The results presented here show that the rotational dynamics of the HCN molecule in 4He clusters are very different from the behavior of heavier molecules such as SF6. Detailed analysis of ground state densities shows that the lighter HCN molecule induces negligible adiabatic following of the helium density as a result of its rotational motion. The excited state calculations show that for small numbers of 4He atoms the nodal structure does not correspond to that of a freely rotating molecule. Nevertheless, the POITSE calculations indicate that there is some admixture of this nodal structure in the low-lying rotational excitations. It is found that a relatively large number of 4He atoms are required to achieve saturation of the effective rotational constant at the experimental value, in contradistinction to the small numbers of atoms required to saturate the rotational constant for heavier molecules such as SF6 and OCS. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1407270
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